#brushlessdcpump

As automotive intelligence advances, domain controllers—the central computing hubs of autonomous vehicles—face rapidly growing computational demands. This surge in processing power creates significant thermal management challenges. Efficient cooling is essential not only for system stability but also for ensuring the safety and reliability of autonomous driving.

This article reviews the classification of autonomous driving, domain controller architectures, and cooling technologies, with a particular focus on the critical role of liquid cooling pumps.

I. Classification and Computing Power Requirements of Autonomous Driving

According to the SAE standards, autonomous driving technologies can be categorized by their level of automation:

L1–L2 (Assisted Driving): Functions such as ACC and LKA, with computing power requirements below 10 TOPS. Air cooling is sufficient.

L3 (Conditional Automation): Examples include traffic jam assist, requiring 30–100 TOPS and active cooling.

L4–L5 (High/Full Automation): Such as Robotaxi systems, demanding 100–1000+ TOPS, where liquid cooling becomes essential.

Conclusion: The higher the level of automation, the greater the power consumption of the domain controller—and the more demanding the technical challenges for the cooling system become.

II. Domain Controller Types and Thermal Characteristics

III. Cooling Technologies for Domain Controllers

1. Air Cooling – Cost-Effective for Low to Mid Computing Power Scenarios

Principle: Heat is dissipated through forced air convection using fans, combined with aluminum heat sinks or heat pipes.

Advantages: Simple structure and low cost.

Limitations: Limited heat dissipation capacity; difficult to handle power consumption above 100W.

2. Liquid Cooling – The Mainstream Choice for High Computing Power Systems

Cold Plate Liquid Cooling: Coolant flows through a metal cold plate, indirectly cooling the chips.

Immersion Cooling: The entire domain controller is immersed in an insulating coolant (still in experimental stages).

Advantages: 5–10 times higher heat dissipation efficiency than air cooling, supporting sustained high-load operation.

3. Phase Change Materials (PCM) & Thermoelectric Cooling (TEC)

PCM: Absorbs heat during phase transition at high temperatures, suitable for handling short-term power peaks.

TEC: Uses the Peltier effect for active cooling; energy consumption is high, so it is typically used for localized hot spots.

IV. The Key Role of Pumps in Domain Controller Liquid Cooling Systems

At the core of any liquid cooling system lies the efficient circulation of coolant — and the liquid cooling pump serves as its “heart.” The pump’s performance directly determines the overall cooling efficiency.

Pump Types and Selection

Mechanical Centrifugal Pump: Simple in structure and low in cost, but limited in flow rate and pressure capability.

Electronic Pump (Brushless DC Pump): Features leak-free operation, long service life, precise flow control, and low noise — making it ideal for autonomous driving domain controllers.

Technical Challenges for Pumps

Reliability: Must comply with automotive-grade standards (e.g., AEC-Q100) and achieve a service life of over 10 years.

Efficiency: High flow rate with low power consumption is a key performance metric.

Integration: Requires co-design with the cooling plate and piping system to minimize space usage and enhance overall compactness.

V. Future Trends: Intelligence + Standardization

Intelligent Thermal Management Systems

AI-driven algorithms predict thermal loads in real time, dynamically adjusting pump speed and coolant flow for optimal efficiency.

Standardized Liquid Cooling Interfaces

The industry is moving toward unified quick-connect fittings and standardized coolant compositions, such as 50% ethylene glycol–water solutions.

Material Innovation

Emerging technologies like graphene cold plates and nanofluid coolants are gradually being commercialized.

Conclusion

From air cooling to liquid cooling, from mechanical pumps to intelligent electronic pumps — the evolution of domain controller cooling technologies is the “behind-the-scenes hero” driving the computing power boom in autonomous driving. In the future, as centralized computing architectures become mainstream, efficient, compact, and intelligent cooling solutions will become one of the key competitive advantages for automakers and Tier 1 suppliers.

I. PWM Speed Control Principle: A Smarter, More Precise Way to Regulate Flow

PWM (Pulse Width Modulation) is a technology that precisely controls the speed of a pump motor by adjusting the duty cycle of pulse signals. Its core principle lies in high-frequency switching control (typically ranging from 100 Hz to 100 kHz), which changes the on–off ratio of voltage within a given time period, thereby enabling linear adjustment of the instant hot water dispenser pump’s flow rate.

Compared with traditional analog voltage regulation, PWM control offers significant advantages in terms of precision and response speed. With a duty cycle adjustment range of 10%–100%, it enables fine flow rate control with an accuracy of up to ±5%. The system also provides ultra-fast response — less than 20 ms across the entire flow range — making it ideal for applications requiring real-time, dynamic adjustments.

II. Application of PWM Function in Hot Water Dispenser: Coordinated Control of Temperature and Flow Rate

In a under-sink filtered hot water dispenser, the target water temperature is achieved by mixing high-temperature water from the heating tank with room-temperature water filtered through the RO membrane. The core equation is:

Target Temperature = (Hot Water Flow × Hot Water Temperature + Cold Water Flow × Cold Water Temperature) / Total Flow

In this process, the cold-water flow rate is typically fixed, and the hot-water temperature remains relatively stable. Therefore, the key variable is the hot-water flow rate. Thanks to its flexible speed control capability, the PWM pump serves as the critical actuator that enables both precise temperature regulation and stable flow control.

Multi-Scenario Adaptability: instant hot water dispenser with heating functions usually offer multiple dispensing modes such as room-temperature, formula milk (≈45°C), or boiling water (≈90°C). When the user selects a specific mode—say, “45°C for baby formula” or “90°C for coffee”—it effectively sends an exact command to the main control unit. The controller instantly calculates the required hot-water flow rate and transmits a corresponding PWM signal to hot water dispenser pump. Depending on the situation, the flow demand may vary from delicate trickle to rapid supply (typically between 500 mL/min and 3.5 L/min). A high-quality PWM water pump can respond quickly, automatically adjusting its duty cycle and speed according to the controller’s signal. With excellent linearity and repeatability across different duty cycles, it ensures precise control of hot water flow.

Real-Time Temperature Compensation Mechanism: The system is equipped with built-in temperature sensors that continuously monitor the heating status. When any deviation from the target temperature is detected, the main controller dynamically adjusts the PWM duty cycle. Through this temperature–PWM closed-loop control, the system achieves high-precision temperature stability in real time.

III. PWM Water Pump Selection Guidelines

As the “core engine” of Instant Hot Water Undersink Dispenser System, the water pump directly determines the overall performance, user satisfaction, and product lifespan. When selecting a PWM hot water dispenser pump, manufacturers should carefully evaluate the following key factors:

1) Flow Rate and Head Pressure

Does your water pump’s rated flow and head pressure meet the system design requirements? Can it maintain stable output under varying hydraulic resistance? Adequate head pressure ensures that hot water can overcome pipeline resistance and be delivered smoothly, while an appropriate flow rate directly affects how quickly and steadily the target water temperature is achieved. Insufficient flow or head may lead to slow dispensing, unstable temperature, and ultimately poor user experience.

2) High Precision and Linearity

Is the pump’s flow output accurate at different duty cycles (e.g., 30%, 50%, 70%)? Does its flow–duty cycle curve remain smooth and linear? These factors directly determine temperature control accuracy. A non-linear pump will cause MCU control algorithms to fail, making it impossible to precisely reach the preset temperature levels.

3) Excellent Batch Consistency and Stability

At the same duty cycle, does the pump maintain stable flow output over time? Is its performance consistent between individual units and across production batches? This consistency ensures that the product performs reliably throughout its lifecycle and across all production lots — a cornerstone of brand reputation.

4) Response Speed and Reliability

Can the pump respond quickly to PWM signals? Fast response is essential for the system to execute timely corrections and maintain precise control. Meanwhile, the brushless motor design must ensure long service life and high reliability, aligning with the overall product’s quality standards.

5) Low Noise and Durability

How quiet is the pump during both low-speed and high-speed operation? Does it adopt a brushless design? A quiet pump greatly enhances user comfort, especially during nighttime operation. Brushless motors eliminate carbon brush wear, resulting in longer lifespan and quieter performance — a critical factor in premium household appliances.

In conclusion, PWM speed control technology serves as the technological bridge that elevates Instant Hot Water Undersink Dispenser System from functional products to user experience–oriented solutions. It not only provides the foundation for precise flow regulation but also achieves system-level coordination between temperature and flow, becoming a key enabler for improved product quality and reliability in high-end hot water dispenser.

As a dedicated industry participant, TOPSFLO remains committed to developing PWM intelligent pump solutions that deliver linear precision, rapid response, low noise, and long-lasting durability — empowering premium under-sink filtered hot water dispensers with core competitive advantages.

Contact Us:

Email: [email protected]

Whatsapp/Wechat：+86-19376691419

Offcial Web: http://www.topsflo.com/ | https://www.topstec.com/

In the field of micro pump applications (especially in household appliances, medical equipment, industrial circulation systems, etc.), the phenomenon of cavitation is known as the "silent killer." It silently erodes the pump body, reduces efficiency, shortens service life, and can even cause sudden failures. As a professional manufacturer of micro pumps, TOPSFLO today takes you deep into understanding pump cavitation and shares our methods for preventing it.

What is Pump Cavitation?

Pump cavitation is a physical disturbance that occurs when the pressure of a liquid drops suddenly to its vaporization pressure at a specific temperature. Its destructive process can be divided into three stages:

① Bubble Formation

When the pump impeller rotates at high speed, a local low-pressure area forms at the inlet of the blades (as shown in the figure). If the pressure here is ≤ the saturated vapor pressure of the liquid at its current temperature, the liquid will instantaneously boil and vaporize, producing dense vapor bubbles.

② Bubble Migration

The bubbles are carried by the liquid flow towards high-pressure areas such as the impeller outlet, where the external liquid pressure increases sharply.

③ Bubble Collapse

The high-pressure liquid intensely compresses the bubbles, causing them to implode within microseconds, instantly releasing:

Ultra-high-pressure shock waves (up to 3000-4000 atmospheres, equivalent to the pressure at 10,000 meters deep in the ocean)

High-temperature micro-jets (local temperature exceeding 1000°C)

High-frequency impacts (tens of thousands of times per second)

Serious Hazards of Cavitation

Physical Damage to Components

The shock waves from collapsing bubbles erode the surfaces of metal or plastic components, forming honeycomb-like pits (e.g., in the pump cavity, impeller).

TOPSFLO Case Study: Although our PPE+30%GF reinforced plastic impellers possess high rigidity, long-term cavitation can still cause surface fatigue cracking. While ceramic center shafts/spacers are wear-resistant, severe vibration may cause micro-cracks.

Severe Performance Degradation

Bubbles occupy flow passage space, blocking water flow, causing a head drop of 5%~15%, and efficiency losses of up to 30%. The pump "appears to be running but cannot transport the medium efficiently."

Vibration and Noise Pollution

Cavitation causes high-frequency impacts, producing a sharp "cracking sound" accompanied by severe vibration of the unit, affecting the user experience (e.g., in silent medical equipment, household appliances).

Accelerated Seal Failure

Continuous vibration accelerates the wear of EPDM seals, and the precise clearance matched with ceramic shaft sleeves may be compromised, leading to an increased risk of leakage.

Conditions for Pump Cavitation and Identification

Whether cavitation occurs depends on the combined characteristics of the pump itself and the suction system. Therefore, analyzing the conditions for cavitation requires considering both aspects. The core criterion for pump cavitation is expressed by the following relationship:

NPSHc ≤ NPSHr ≤ [NPSH] ≤ NPSHa

When NPSHa ≤ NPSHr (NPSHc): Cavitation begins.

When NPSHa > NPSHr (NPSHc): The pump operates without cavitation.

In the formula:

NPSHa (Net Positive Suction Head Available): Characterizes the margin of energy provided by the suction system at the pump inlet over the vapor pressure. The larger this value, the less likely cavitation is to occur.

NPSHr (Net Positive Suction Head Required): Represents the minimum NPSHa required by the pump itself to maintain operation without cavitation. The smaller this value, the better the pump's cavitation resistance. Its physical essence reflects the dynamic pressure drop from the pump inlet to the lowest pressure point on the impeller.

NPSHc (Critical NPSH): Refers to the NPSH corresponding to a specified drop (typically 3%) in pump performance (e.g., head).

[NPSH] (Allowable NPSH): A design margin set to ensure safe pump operation, usually taken as [NPSH] = (1.1 ~ 1.5) × NPSHc.

Calculation of NPSHa: NPSHa=Ps/ρg+Vs/2g-Pc/ρg=Pc/ρg±hg-hc-Ps/ρg

Be Alert to These Signals of Cavitation:

Abnormal Noise: A continuous crackling or popping sound (like gravel flowing through the pump), distinct from normal operating sounds.

Severe Vibration: Caused by hydraulic imbalance due to bubble formation and collapse.

Sudden Performance Drop: Flow rate, head, and efficiency are significantly lower than expected.

Material Damage: Characteristic honeycomb-like or sponge-like erosion pits appear on the impeller or pump cavity.

Pump Cavitation Prevention Measures

The key to preventing pump cavitation lies in increasing the NPSHa to ensure it is greater than the NPSHr (NPSHa > NPSHr). Specific measures include:

Reduce Installation Height: Decrease the geometric suction lift (hg), or use a flooded suction installation (increase the flood height) whenever possible.

Reduce Suction Line Losses: Increase the suction pipe diameter, shorten the pipeline length, and reduce local resistance components such as elbows and valves.

Avoid Overflow Operation: Prevent the pump from operating for extended periods at flow rates significantly beyond its rated capacity.

Adjust Operating Conditions: If signs of cavitation appear during operation, reduce the pump's flow rate or speed.

Optimize Suction Source Conditions: Ensure the suction tank has smooth flow patterns, is free of vortices, and maintains a stable liquid level that meets requirements.

Increase Impeller Inlet Vane Width: This increases the inlet flow area, reduces the inlet absolute and relative velocities (Vo and Wo from the inlet velocity triangle), thereby reducing NPSHr and improving cavitation resistance.

In the fields of laser technology, medical equipment, laboratory devices, and semiconductor processes, chillers serve as critical temperature control systems. Their performance stability directly impacts system efficiency and the lifespan of core components. Based on different cooling principles, chillers are mainly categorized into two types: semiconductor chillers and compressor chillers. Each solution has unique advantages. This article provides an in-depth comparison of the two types in terms of principles, performance, and application scenarios, helping chiller industry customers better match circulation pump solutions and optimize overall system performance.

I. Cooling Principles

1. Semiconductor Chillers: Pioneers of Precision Temperature Control

Principle: Cooling based on the Peltier effect

Semiconductor chillers utilize the Peltier effect of semiconductor materials to achieve cooling. When direct current flows through thermoelectric modules composed of N-type and P-type semiconductors, one side absorbs heat (cold side) while the other side releases heat (hot side). With effective heat dissipation design, the hot side discharges heat while the cold side continuously absorbs external heat, creating a cooling effect. This method requires no refrigerants, avoiding leakage, environmental impact, and complex maintenance associated with traditional systems, making it highly eco-friendly and stable.

2. Compressor Chillers: The Mainstay of High-Capacity Cooling

Principle: Classic vapor compression cycle

Compressor chillers operate on a vapor-compression refrigeration cycle, consisting of four main components: compressor, condenser, expansion valve, and evaporator. The compressor compresses low-pressure vapor refrigerant into high-temperature, high-pressure gas, which is then cooled and condensed into liquid in the condenser. After passing through the expansion valve, the liquid refrigerant undergoes pressure reduction and enters the evaporator, where it absorbs heat from the target medium and evaporates into vapor. This cycle repeats continuously to provide effective cooling.

II. Key Performance Comparison

1. Advantages of Semiconductor Chillers: High Precision and Fast Response

1.1 Exceptional Temperature Accuracy

Semiconductor chillers can achieve extremely precise temperature control, with accuracy up to ±0.01°C, and even higher in some advanced models. This makes them ideal for applications highly sensitive to temperature fluctuations, such as photolithography and etching in semiconductor manufacturing, or precision diagnostic equipment in healthcare, ensuring stable operation and improved product quality.

1.2 Rapid Cooling and Heating Switch

By reversing the current direction, semiconductor chillers can switch quickly between cooling and heating modes. This fast response is suitable for applications requiring rapid temperature changes, such as chip testing with high/low temperature cycling, helping shorten test cycles and enhance R&D efficiency.

1.3 Compact Size and Low Noise

Without complex mechanical parts, semiconductor chillers are compact, lightweight, and space-saving, making them easy to integrate into different devices. With no moving mechanical components, they operate with minimal vibration and noise, making them highly suitable for noise-sensitive environments such as laboratories and hospitals.

2. Advantages of Compressor Chillers: Strong Cooling Capacity and Broad Applicability

2.1 High Cooling Capacity

Compressor chillers offer powerful cooling performance, ranging from several kilowatts to hundreds of kilowatts or more, making them ideal for large-scale industrial production, data centers, and commercial buildings where significant cooling capacity is required.

2.2 Wide Temperature Range

They provide a broad temperature control range, from as low as -50°C to as high as +150°C, meeting diverse process and environmental cooling demands across multiple industries.

2.3 Reliable and Efficient Operation

With decades of development, compressor chiller technology is mature and reliable. Modern systems feature intelligent controls that automatically adjust compressor speed and cooling output based on load, ensuring energy efficiency. They also include advanced fault diagnosis and alarm functions, minimizing downtime and maintenance.

III. Application Scenarios

1. Semiconductor Chillers: Tailored for High-Precision Needs

1.1 Medical Equipment

Used in medical imaging devices (MRI, CT), in-vitro diagnostic instruments, and laser treatment systems, semiconductor chillers ensure stable operation of core components, improving imaging quality, diagnostic accuracy, and treatment performance.

1.2 Research Laboratories

In scientific experiments requiring strict environmental conditions, semiconductor chillers deliver stable and precise temperature control for instruments such as incubators and high-resolution spectrometers, ensuring accuracy and repeatability of experimental results.

2. Compressor Chillers: Serving Diverse Industrial and Commercial Applications

2.1 Industrial Manufacturing

Widely applied in food & beverage, laser engraving, metal processing, and signage industries, compressor chillers handle process cooling, condensation, and temperature regulation. For example, in food & beverage, they help control fermentation temperature, cool production equipment, and support cold chain logistics.

2.2 Commercial Buildings

In shopping malls, hotels, and office buildings, compressor chillers form the backbone of central HVAC systems, ensuring comfortable indoor climates while optimizing energy efficiency and reducing operational costs.

IV. The Heart of the System: The Critical Role of Circulation Pumps

Regardless of the cooling principle, both types of chillers rely on liquid circulation to transfer heat from the equipment side to the heat dissipation side—a process entirely dependent on pumps. As a manufacturer specializing in micro brushless DC water pumps, we understand that a reliable chiller requires a dependable, efficient, and quiet “pump.”

1. Pump Requirements for Semiconductor Chillers

1.1 Small flow rate and low head (typically 2–15 L/min, head <10 m)

1.2 Ultra-low noise for laboratory and medical applications

1.3 High sealing reliability to prevent leakage and protect sensitive components

Recommended Models: Compact brushless DC silent pumps, either built-in or external, such as TL-B10 and TL-C01 series.

2. Pump Requirements for Compressor Chillers

2.1 Medium to high flow rate (≥15–30 L/min), compatible with system design

2.2 Compatibility with industrial fluids such as water/glycol mixtures

2.3 Long-life reliability for continuous heavy-duty operation

Recommended Models: High-performance brushless centrifugal pumps with overheat, dry-run, and blockage protection, such as TA60 and TA70 series.

3. TOPSFLO Pump Solutions: Customized for Chiller Systems

We provide reliable pump solutions for laser chillers, laboratory temperature controllers, and precision cooling modules, with the following advantages:

3.1 High-temperature durability

Brushless design with ceramic shaft ensures stable operation at 75–100°C continuously.

3.2 Low-noise operation

Magnetic levitation rotor design, operating noise <35 dB, ideal for quiet environments.

3.3 Leak-proof sealing

Static sealing chamber design fully isolates fluid from the motor, eliminating leakage risk.

3.4 Modular customization

Tailored pump designs based on system layout, electrical interface, and flow curve, helping customers optimize equipment performance.

Conclusion

As an advanced fluid transfer device, brushless DC centrifugal pumps are playing an increasingly important role in various industries. This kind of dc water pump not only has the advantages of high efficiency, low energy consumption and smooth operation, but also has the advantages of easy installation and use, long life and is deeply loved by users, becoming the preferred device in many fields. The FG signal of the brushless DC centrifugal pump is very important for monitoring, controlling and optimizing the operation of the pump, which can improve the stability, safety and efficiency of the system.

What is the FG Signal of a Brushless DC Centrifugal Pump?

The FG signal of a brushless DC centrifugal pump usually refers to the "Frequency Generator" signal line, which usually work through a square wave signal. The frequency of this square wave signal is proportional to the speed of dc water pump. When the motor speed increases, the frequency of the square wave signal will increase accordingly, and when the motor speed decreases, the frequency of the square wave signal will also decrease. Through the frequency change of this square wave signal, the control system can achieve precise control of the motor speed and control it as needed to ensure the stable operation of the water pump.

If the motor speed is lower than the set value, the control system can increase the output power of the motor by increasing the duty cycle of the speed regulation signal, thereby increasing the motor speed. On the contrary, if the motor speed is higher than the set value, the control system can reduce the output power of the motor by reducing the duty cycle of the speed regulation signal, thereby reducing the motor speed.

How is the square wave generated? The FG signal is actually the communication signal of the brushless DC motor. When a communication event occurs, the FG output will toggle. The rotor used in the TOPSFLO water pump has 4 poles, which means that 4 communication events will occur during one rotation of the rotator, and the FG will flip twice to produce a square wave.

Wiring Method of the FG Signal Line

The wiring sequence of the customized 5V/PWM/FG signal line of TOPSFLO DC brushless water pump is generally: red line positive, black line negative, blue line 5V or PWM speed regulation, yellow line FG signal. When the red, black and yellow wires are connected, the water pump works normally; when the yellow wire is not connected, the water pump works, but there is no signal display; when the input current is >50mA, there is a risk of damage to the FG signal circuit of the pump. When measuring speed, a pull-up resistor must be connected. The pull-up resistor is recommended to be between 1K and 10K. It is adjusted according to the pull-up voltage. The greater the voltage, the greater the resistor selected.

FG Wiring Precautions

What kind of applications need to customize the FG signal lines?

The reasons for customizing FG signal for brushless DC centrifugal pumps involve many aspects such as control system requirements, accuracy, integration, and performance optimization. By customizing FG signal lines, customers' specific needs can be met to ensure that the water pump can achieve the best performance and functionality in its applications. The following are common applications that require customized FG signal lines:

Equipment control system requirements: The customer's control system requires specific types or specifications of signal inputs to ensure optimal performance. For control systems that require specific frequency ranges or signal types, customizing FG signal lines to meet these requirements is necessary.

Precision and accuracy requirements: Customer applications require higher measurement precision and accuracy, such as the medical industry, drinking industry, cooling industry, precision instruments, etc. By customizing the FG signal line, the speed of the water pump can be precisely controlled. For example, the speed regulation function needs to be implemented or the pump needs to run at a specific speed under specific conditions. At this time, the FG signal line can provide the operating status and speed information of the water pump to facilitate customers to accurately control and adjust the water pump.

Real-time monitoring requirements: The operating status of the water pump needs to be monitored in real time. For example, it is necessary to know the flow rate of the water pump or whether it has stopped due to failure. At this time, customized FG signal lines can collect and monitor these data, helping customers promptly detect abnormal pump operation and take corresponding measures.

Integration and compatibility requirements: Customized circuits or wiring schemes are required for customer system integration to meet the overall system design and requirements. In this case, customized FG signal lines can better meet the needs of system integration, providing a more flexible and reliable system solution.

Advantages of TOPSFLO's customized FG signal lines

TOPSFLO is one of the earliest manufacturers in China to focus on the R&D and manufacturing of micro pumps. It is a powerful enterprise that only produces high-end products and exports 90% of them to the European and American markets. It has long-term and stable cooperation with many world-renowned brands in Europe and the United States, and its business has been growing steadily every year. At present, the full series of TOPSFLO TL brushless DC centrifugal pumps can realize intelligent customization of FG signal lines. Our advantages are mainly reflected in the following:

R&D strength: TOPSFLO has independent electronic engineers, structural engineers and motor engineers to provide you with support and R&D. Each has their own practical R&D capabilities and can be flexibly customized according to customer requirements, ensuring that you can always receive a solution immediately. You can rest assured of our high-quality and professional service in the long run.

Successful cases: TOPSFLO cooperates with many leading international companies and provides OEM supporting services, such as Tesla, Whirlpool, Bosch, KTM, KOHLER, etc. Therefore, we have extensive experience in pump applications and OEM services in different industries, such as medical, solar pv, automotive, industrial cooling, home appliances, charging piles, hot beverage machines, etc.

Company strength: With nearly 18 years of experience, TOPSFLO is the leading comprehensive solution manufacturer in China specializing in the production of various micro dcwater pumps. We attach great importance to product quality and corporate integrity, which is why we have a strong R&D team to realize customers' customized needs throughout the process.

TOPSFLO can not only customize the speed regulation function of 5V, PWM and FG signal lines, but also realize the customization of pump size, structure, materials, etc. Any OEM project you can imagine and request for customization, TOPSFLO will try its best to meet your requirements. If you have any further questions, please feel free to let us know. We value your valuable suggestions and look forward to cooperating with you.

Wanna to get pump solution or apply free sample? Contact us now:

Email: [email protected]

Whatsapp/Wechat：+86-19376691419

Find more pumps: http://www.topsflo.com/

Solar water heaters offer an efficient and economical alternative to traditional water heating systems, making them a popular appliance for homeowners looking to reduce their energy consumption and carbon emission. When it comes to enjoying a comfortable shower experience and worry-free hot water supply, a solar water heater booster pump becomes an indispensable home appliances. Because of the efficient pressurization of the water pump, users can not only use solar energy efficiently, but also easily enjoy a stable hot water supply.

The core function of TOPSFLO solar water heater booster pump is to increase the water pressure of the hot water supply, so that users no longer have to wait for the hot water to flow out, or endure the intermittent hot water supply, but can enjoy every drop of warm hot water. Ensure you get a new and comfortable hot water experience.

At present, TOPSFLO solar hot water circulation pump TS5 has been widely used in several hundred thousand of households around the world. Based on customer feedback, the following points are the main reasons why customers choose TOPSFLO DC solar hot water pumps:

PV power supply, no need to connect to the gridThe TOPSFLO DC solar pump can be directly connected to the photovoltaic (PV) panel and can directly use the solar DC power converted by the PV panel without the need for additional energy conversion equipment, which can maximize the use of solar resources and reduce energy conversion losses; It provides great convenience for rooftop installation,even remote areas or places lacking stable power supply. This is one of the important reasons why TS5 pumps are widely used around the world.

Highly efficient and energy-saving, suitable for small or single-family solar water heating systemsThe water pump can start working when the sunlight is weak. The TS5 pump is equipped with a 2W soft-start function and can also work continuously for 24 hours to meet daily hot water supply needs at any time. The low power of 15W can provide a strong flow rate of 12L/Min and a maximum pressure of 3M, reducing energy waste and ensuring efficient supply of hot water. The ultra-long life of 30,000 hours makes it an economical and reliable choice. Used with solar water heaters, it can help you minimize electricity or gas consumption and reduce users' energy expenses.

Add special protection functions for worry-free operationTS5 comes with a series of special protection functions, including polarity protection, idling protection, stall protection, etc. End users can clean and maintain the water pump themselves. When reinstalling, even if the positive and negative poles of the power supply are reversed, solar hot water pump circuit board will not be damaged. If the pipeline is short of water, the idling protection detection of TS5 will be triggered. The water pump will run at low speed when there is no water, and will automatically return to normal working status when there is water, without the risk of burning the PCBA. If impurities in the pipeline block the pump, the pump will be tested repeatedly until the blockage is cleared and normal operation resumes. These protection mechanisms greatly reduce the damage to the water pump caused by common operating errors by end customers.

Easy installation and maintenanceThe installation process of TOPSFLO solar water heater booster water pump is very simple and does not require complicated engineering and equipment, allowing you to quickly enjoy it at home. The TS5 water pump is small and lightweight, with a motor diameter of 46mm and can be directly fixed on the water pipe without a bracket. The high quality makes it almost free of maintenance costs. It only requires regular inspection and maintenance to remove possible impurities in the water pipes. TOPSFLO solar water heater booster pump TS5 will continue to provide long-term and reliable service for your solar water heater.

In practical applications, TOPSFLO Solar hot water Pump TS5 not only helps solar water heaters improve the hot water supply for end users, but also helps them save a lot of energy costs, and has won unanimous praise from the majority of end users. One of our end users wrote to TOPSFLO and said: "My TS5 water pump has been working perfectly for 4 years. Now I want to buy a new generation pump." Real user reviews and satisfaction guarantee are the best proof of our products.

If you have a specific working scenario or application needs and are looking for a pump solution, feel free to contact us. TOPSFLO will continue to provide you with more efficient and energy-saving solar water heater pumps.

Wanna to get pump expert recommendation or apply free sample? Contact us now:

Email: [email protected]

Whatsapp/Wechat：+86-19376691419

Offcial Web: http://www.topsflo.com/

Market Overview

Europe, lacking ample indigenous energy resources, heavily relies on importing energy from other regions, driving up the cost of energy supply. Consequently, European countries lean towards electricity as their primary energy source. However, these nations also face pressure from environmental policies in electricity production and supply. The maintenance and operational costs of cables, transformers, and transmission lines are relatively high, further inflating residential electricity bills. Hence, European countries adopt time-of-use electricity pricing policies, resulting in significantly higher electricity prices during peak hours compared to off-peak hours. Heat exchanger tank can convert electricity into thermal energy during low-demand periods, effectively reducing electricity consumption during peak hours.

Market Pain Points

In a heat exchanger tank,how does the hot water at the bottom mix with the cold water in the upper part of the tank at the required time and rate to achieve a steady supply of warm water in the home? How to minimize the noise of the heat exchanger tank when it is in operation so that it does not affect the sleep of the family members, as the lowest electricity prices are usually between midnight and 6am? In some countries, the water pressure in the pipeline can reach 6-7 bar, how to ensure that the hot water system of the heat exchanger tank continues to operate stably? The water pump of the heat exchanger tank already has a fixed installation connection, how to replace the water pump?

TOPSFLO Heat Exchanger Tank Pump Solutions

TL-C04-D heat exchange tank circulating pump is customized to the parameters of 23L/min, 4m according to the flow demand point of the heat exchanger tank, and increase the PWM intelligent speed regulation, so that the hot and cold water in the heat exchanger tank can be mixed at the specified time and speed, to ensure the continuous supply of warm water according to the user's demand.

The lowest electricity price is usually in the early morning to 6 a.m., so the heat exchanger tank will continue to work during the user's sleep section, TOPSFLO TL-C04-D hot water circulation pumps through the use of larger parameter pump to reduce the speed, and the use of a patented silent rotor, the noise is as low as 38dB, to ensure that it does not affect the user's sleep.

There are differences in pipeline water pressure in various European countries, ranging from 5-8bar. TL-C04-D heat exchange circulation pump is made of high-pressure PPE material imported from Japan, which can withstand a long-term pressure of 10bar and a maximum pressure of 18bar. It meets the different water pressure requirements of various countries.

Many heat exchanger tank and hot water circulating pumps docking end of the metal G1/2 external threads, TOPSFLO TL-C04-D hot water circulation pumps for the customized G1/2 internal threads can be a perfect match for the docking pipeline. And it can 100% replace Laing D5.

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In recent years, the tea beverage market is rapidly booming, with new bubble tea beverage brands such as Naixue, Sexy tea, Lucky Coffee and Kudi Coffee, not only meeting diversified consumer demand, but also becoming a key growth engine in the market.

With the continuous expansion of the bubble tea beverage market, the market size of commercial water boilers and tea water dispensers has also grown steadily. Consumer demand for tea has become increasingly diversified, they not only want to meet the basic needs of drinking, but also pay more attention to the taste and quality of tea, the pursuit of different flavour of various types of tea. The emergence of commercial hot water dispensers makes it easier for consumers to obtain high-quality tea drinking, and the intelligence and multi functionality of the equipment has also become a trend for future development.

The Main Functions of Water Pump

The main role of a food grade hot water pump in a commercial water boiler includes:

(1) Commercial water boilers are often required to provide hot water to multiple customers during peak hours, and the dosing action of the pumps ensures a steady flow of hot water is provided for varying demands;

(2) Pressurized water sources to ensure a steady flow of water, especially in areas of low water pressure or long distance water supplies;

(3) Used to deliver heated water to provide a fast, efficient supply of hot water, while monitoring and controlling the level in the tank to maintain sufficient water to ensure a continuous supply of hot water.

Choosing the Right Pump is Crucial

In the manufacture of commercial water boilers, the brushless dc water pump is one of the key components that ensures that the boiler runs consistently and delivers stable hot water. To help you make an informed decision when choosing a dc water pump, here are some key considerations:

Flow demand: In commercial water boilers, it is important to cater for hot water supply under different models and demands. Flow demand refers to the required hot water output per minute. When selecting a pump, the hot water demand in a commercial scenario needs to be analyzed in detail, including peak hours and demand for different models, to ensure the pump selected has sufficient flow to meet the demand while avoiding excessive energy consumption.

High-temperature performance: Commercial water boilers can reach high temperatures, even up to 100 °C, when heating and storing hot water, so the pump selected should have excellent high-temperature resistance to prevent the pump from cavitation or failing in high-temperature environments. This involves the selection of high temperature resistant materials and the design of the electrical system to protect the internal components of the pump from high temperature damage.

Drinking water safety: The hot water supplied by commercial water boilers will be used for food and beverage preparation, so the pumps must be made of materials and manufactured to meet food-grade certification standards. This requires stringent quality control and material selection to ensure that the pumps do not release hazardous substances or adversely affect water quality, providing a high level of trust and reliability for users.

Speed control: Commercial water boilers and tea makers need to adapt to different water needs, so it's a good idea to choose a pump with a speed-adjustable feature to adjust the speed and temperature of the water flow according to the user's needs.

Design flexibility: The size and shape of the pump should be coordinated with the design of the commercial water boiler to ensure optimal integration and space utilization. Flexible design also promotes ease of installation and maintenance.

Reliability: Commercial water boilers often require frequent start-ups and operation at high traffic levels. Choosing a well-designed, well-built and rigorously tested pump reduces breakdowns and maintenance requirements. A pump that is easy to maintain reduces downtime and ensures a constant supply of hot water.

Ideal for Commercial Water Boiler Pumps

Based on these points, the TOPSFLO brushless centrifugal pumps TL-B02, TL-B03 and TL-B10 series offer a wide range of choices for different models and needs in the field of commercial water boilers, demonstrating excellent technical advantages:

TOPSFLO DC water pumps offer multi-specification flow rate options to meet the demand under different tank capacities, tea bucket capacities and water head ranges, providing diverse specification options such as 6L/min, 7L/min, 9L/min, 12L/min, and so on.

They have extreme high temperature resistance with high temperature wear-resistant materials and unique high temperature exhaust design, capable of stable operation at extreme temperatures up to 100 degrees Celsius, ensuring that commercial water boilers can supply hot water for a long time in high temperature environments.

TOPSFLO DC water pumps have passed FDA, NSF and other food-grade certifications as well as WRAS certifications to meet drinking water standards, providing higher credibility and user trust for commercial water boilers.

TOPSFLO DC water pumps support PWM or 5V speed adjustment with signal feedback to intelligently adjust the speed and volume of water flow according to user demand, providing personalized rationing while reducing energy consumption and lowering operating costs. They also feature a compact design, including different height options to accommodate a variety of commercial water boiler installations and layouts, providing additional design flexibility. Most importantly, TOPSFLO brushless dc water pumps undergo intensive reliability testing to ensure trouble-free and stable operation during frequent start-up operations ,providing commercial water boiler manufacturers with a reliable, high-quality product.

This range of technical advantages makes TOPSFLO DC water pumps the ideal choice for the commercial water boilers. By choosing TOPSFLO pumps, manufacturers of commercial water boilers and tea water dispensers are able to offer superior products that have gained a reputation for excellence in the marketplace and user feedback. By working closely with TOPSFLO to shape a bright future for the commercial water boilers, we will continue to drive technological innovation, meet customer needs, and bring more development opportunities to the industry.

Wanna get pump expert recommendation? Contact us now:

Email: [email protected]

Whatsapp/Wechat：+86-19376691419