hongvadar

https://www.hongvadar.com/products/crystallizer/

Horizontal Crystallizer

HVD-HCR-V horizontal agitated batch vacuum crystallizer is a piece of cooling crystallisation equipment. The source medium of crystallization is operated under atmospheric pressure. The crystallization temperature is determined by the process and the crystallization process is discontinuous. Its crystallization control has outstanding characteristics are simple structure, energy-saving, and comfortable operation.

 The crystallizer meaning is a horizontal closed cylinder structure, with packing sealing device and reduction gear installed on both end covers. The tank wall has a cooling water interlayer. The hollow shaft is arranged in the center of the tank to fix the cooling coil and agitating spiral belt. Both ends of the shaft heads have the function of cooling water circulation.

 Application of Horizontal Crystallizer

Crystallization of liquid glucose.

 Crystallization of glutamic acid, xylose, and xylitol.

 Crystallization of tartaric acid and malic acid.

 Crystallization of salts in the chemical industry.

 Crystallization of sodium gluconate, calcium carbonate.

 Features of Horizontal Crystallizer

Customized design of crystallization machine to meet the needs of various customers.

 The transmission device has a compact structure, stable operation, high efficiency, and low noise.

 Reliable mechanical seal, shortstop time.

 The small gap between the spiral belt and the barrel body, uniform stirring, not blocked.

 Advanced circulating water cooling system with good cooling effect and high crystallization effect.

 Stainless steel inner cylinder, corrosion resistance, long service life

 Cooling Type Vertical Continuous Crystallizer

HVD-VCR-V vertical continuous crystallizer is used to crystallize solids from the supersaturated solution by liquid crystallization. The solution is entered through the feed pipe at the top of the crystallizer. Through the cooling module in vertical and the cooling module in series to form a pre-designed temp. the gradient to cool the material. After the crystallized material reaches the bottom of the equipment, it reaches a certain temp. and particle size, and then it is discharged through the outlet with an insulation jacket at the bottom of the equipment into the next process for processing.

 The seed needed for the crystallization process is supplied from the seed tank.

 Application of Cooling Type Vertical Continuous Crystallizer

Crystallization of liquid glucose.

 Crystallization of fructose, mannitol, and maltitol.

 Crystallization of glutamic acid, xylose, and xylitol.

 Crystallization of tartaric acid and malic acid.

 Crystallization of salts in the chemical industry.

 Crystallization of sodium gluconate, calcium carbonate.

 Features of Cooling Type Vertical Continuous Crystallizer

Continuous and large-scale production.

 Automatic control to ensure stable product quality.

 This equipment used for crystallisation can save floor space.

 Simple and convenient operation.

 Crystallizer Technical Parameter

Horizontal Crystallizer Technical Parameters

Model

HVD-HCR-V25

HVD-HCR-V30

HVD-HCR-V36

HVD-HCR-V40

HVD-HCR-V45

Volume (m3)

25

30

36

40

45

Working pres. (Mpa)

≤0.16

Feed DS %

70%~75%

Power (kw)

3

4

5.5

5.5

7.5

Rotary speed (r/min)

0.5~0.8

0.5~0.8

0.5~0.8

0.5~0.8

0.5~0.8

Overall dimension (mm)

5880×2980×3545

6680×2980×3545

7165×3250×3833

6305×3833×4045

6805×3600×4045

Weight (kg)

13500

15200

18232

171000

18420

Cooling Type Vertical Continuous Crystallizer Technical Parameters

Model

HVD-VCR-V110

HVD-VCR-V178

Volume (m3)

128

178

Material loading volume (m3)

110

160

Effective cooling area (m2)

250

380

Material

SS304

SS304

Cooling modules qty.

11 (10 groups coil + head jacket)

12 (11 groups coil + head jacket)

Cooling control circuit

5+1 (jacket)

5+1 (jacket)

Reducer power (kW)

1.5 / 2.2

1.5 / 4

Power of hydraulic station (kW)

15

22

Total height around (m)

21

21.8

Barrel body (mm)

Φ3300×8

Φ3800×8

https://www.hongvadar.com/products/continuous-evaporative-crystallization-system/

HVD-CC-T series continuous crystallisation and evaporation system is designed and developed by our factory with patent applied.

 Core Of Crystallization Process Control

Design enough long crystal time according to crystal characteristics to create an environment conducive to the growth of crystal structure.

 Adjust the direction of materials, control the number of microcrystals, realize the whole process control of seed generation, seed growth, elimination of microcrystals, growth of qualified particles, and timely discharge of qualified particles.

 Most businesses take crystallization as the process of concentration. It is believed that the concentration reaches supersaturation, the crystal forms naturally, and there is no awareness and measures to control the crystal quality. The control of the crystal purpose is ignored, and the influence of crystallization on separation and drying is not fully considered, which makes the subsequent section treatment more difficult due to the crystallization. Therefore, the purpose of crystallization is to improve the overall yield and product quality and reduce the product production cost.

 Characteristics Of Evaporative Crystallization System

Crystallisation and evaporation system is used for products with general requirements on crystal shape and size and can achieve high concentration discharging.

 According to the characteristics of materials and the evaporation capacity, Crystallisation and evaporation system can be designed as a single-effect or multi-effect evaporative crystallization system.

 The unique design of the crystallizer can meet the intermittent crystallization, semi-continuous crystallization, and continuous crystallization system. It can meet the continuous feed, continuous discharge process requirements.

 The whole crystallisation and evaporation process system evaporates under the vacuum condition, with relatively low temp, fast evaporation speed, high evaporation concentration, and the relatively high viscosity of the liquid material is not easy to scale or block, which can achieve the maximum crystal ratio under the same energy consumption.

 HongVadar relies on professional design, strict production management, the fine processing procedure, provides high efficiency and energy saving equipment system for the customer. The manufacturing factory has passed the international ISO9001 quality system certification, and with the design and manufacturing capacity of pressure vessels. Customers can choose Chinese GB, International ISO, American standard ASME, European standard PED and other standards for equipment design and production according to their needs.

https://www.hongvadar.com/products/chromatography-system/

HVD-CHRO-Q series chromatography separation system, also known as the chromatography data system, is the use of the mixture in the flow through the chromatography separation resin (separation agent), due to the different adsorption capacity of components of chromatography for mixture and separation agent to separate.

 Features of Chromatography System

High purity column chromatography equipment.

 High production yield and high performance chromatography.

 The internal continuous single use chromatography system adopts multi-dimensional design and multi-dimensional monitoring to ensure the best separation effect.

 Low water consumption and low energy consumption.

 Automatic intelligent control with low labor cost.

 Special and professional distributor design, uniform distribution, low pressure, to avoid a large number of resin broken.

 Application of Chromatography System

Chromatography data systems is widely applied to crystalline fructose, fructose-oligos, F55 fructose syrup, inulin, DMH mother liquid, maltitol, xylose, arabinose, xylooligosaccharide, isomaltooligosaccharide, trehalose, tags, saccharification liquid, organic acids, amino acid, etc. The chromatography data system in pharmacy also has a large chromatography systems market.

 HongVadar relies on professional design, strict production management, the fine processing procedure, provides high efficiency and energy-saving equipment system for the customer. The manufacturing factory has passed the international ISO9001 quality system certification, and with the design and manufacturing capacity of pressure vessels. Customers can choose international ISO, EU CE, and other standards for equipment design and production according to their needs.

 Chromatography System Technical Parameter

Model

Material

Feed DS, %

Feed capacity, t/h

Product DS, %

Output capacity, tpy

(F55)

HVD-CHRO-Q1.0

Refined F42

58-62

1.56-1.67

77

10000

HVD-CHRO-Q2.0

Refined F42

58-62

3.13-3.35

77

20000

HVD-CHRO-Q3.0

Refined F42

58-62

4.7-5.0

77

30000

HVD-CHRO-Q6.0

Refined F42

58-62

9.4-10.0

77

60000

HVD-CHRO-Q10.0

Refined F42

58-62

15.6-16.7

77

100000

HVD-CHRO-Q15.0

Refined F42

58-62

23.5-25.1

77

150000

HVD-CHRO-Q20.0

Refined F42

58-62

31.3-33.5

77

200000

https://www.hongvadar.com/products/centrifuge/

HVD-TCF-P is an automated upper suspension centrifuge device with mechanical unloading. All parts contact with the material and water, steam pipeline is made of stainless steel or corrosion resistant materials, to ensure the cleanliness of the separated products. Using pneumatic mechanical scraper discharge, centrifuge instrument makes unloading safe and reliable and suitable for separating suspension containing medium and fine particles crystal. If you want to buy commercial centrifuge, Hongvadar is the best choice for you as one of the qualified centrifuge companies.

 Centrifuge Application

HVD-TCF-P automated upper suspension centrifuge is mainly used for centrifuge dewatering of a saccharide in sugar industry, but also for the separation of solid and liquid of the B saccharide, grape saccharide or similar crystal materials with high viscosity and high concentration. Centrifugation in food processing is really common.

 Centrifuge Main Advantages

Automatic control to ensure the separation effect;

 Stepless speed regulation;

 Wide speed range;

 Large starting and braking torque;

 Good low speed centrifuge capacity;

   Centrifuge Technical Parameters

Model

HVD-TCF1400-P90

HVD-TCF1600-P110

Drum inner dia. mm

φ1348

φ1600

Max. drum rotary speed, rpm

1410

1100

Max. separation factor

1500

1083

Drum effective volume, L

778

1089

Max. material loading qty. kg

1300

1750

Power, kW

90

110

Overall dimension, mm

2420×1910×4820

2240×2160×5100

Weight, kg

9000

9500

https://www.hongvadar.com/products/bundle-dryer/

HVD-BD-P series rotary steam tube bundle dryer system is an indirect contact dryer. Its structure is the transmission of heating tube bundle equipment with shovels fixed in the shell inside. The steam enters into the pipe through the rotary joint and transfers to condensed water to be discharged. The water in the material is heated outside the pipe and turned into steam to be discharged by the fan. The material is lifted by the material shovels that are driven inside the tube bundle, falls evenly on the outer surface of the heating pipe, and is dried from the inlet end to the outlet end by the material shovel pushed.

 Rotary steam tube bundle dryer is widely used for drying loose wet materials in chemical, light industries, food, and feed industries.

 Wide range of drying materials, large moisture evaporation, low energy consumption, and continuous production of rotary steam tube bundle dryer.

https://www.hongvadar.com/products/arc-screen/

Gravity Arc Screen

HVD-AS-G series gravity arc screen is a new type of efficient static screening equipment. The screen surface is made of stainless steel wedge with a certain arc shape. It can be used in a large amount of wet material screening occasions, for the separation, screening, dehydration, washing, extraction of various materials, solids and impurities removal, etc. The separation of coarse and fine residues (fibers), such as corn dehydration, germ dehydration, and washing is widely used in the starch industry, which is the most ideal and important equipment in the starch industry.

 The equipment has the characteristics of large production capacity, good screening effect, safe and reliable use, the screen surface is not easy to caulk, long service life, reasonable structure, and so on.

 Pressure Arc Screen

HVD-AS-P series pressure arc screen is a kind of high-efficiency screen that depends on pressure to screen wet materials. It is composed of the screen surface, screen box, feeding device, and discharge port, etc. The screen surface is the key part of the pressure arc screen, which is assembled by the stainless steel-shaped screening bar. When working, the wet material with 0.2-0.4 MPa pressure from the nozzle, the tangential force generated by the high feed injection speed, the triangular shape is woven into the edge, so that the thin layer material wipe scrape into, which make water and fine material evenly dispersed. The so-called "scrape" role, is to make the material easy to classify, and the entire screen surface gets the indispensable self-cleaning. Oversize material discharge from the pot of the oversize material. And the screen underflow goes into the pulp out of the mouth.

 Arc Screen Technical Parameter

Gravity Arc Screen Technical Parameters

HVD-AS-G series gravity arc screen

 Model

Screen surface arc angle / (°)

Screen surface width / mm

Screen surface length / mm

Screen surface area / m2

HVD-AS-G0.8

60

800

800

0.64

HVD-AS-G1.0

1000

0.8

HVD-AS-G1.2

1200

0.96

HVD-AS-G1.5

1500

1.2

HVD-AS-G1.8

1800

1.44

HVD-AS-G2.0

2000

1.6

 Pressure Arc Screen Technical Parameters

HVD-AS-P series pressure arc screen

 Model

Screen surface length / mm

Screen surface width / mm

Material pres. / MPa

Screen suture / um

HVD-AS-P585×1

1600

585

0.25-0.4

50/75/100/120/150

HVD-AS-P585×2

585

50/75/100/120/150

HVD-AS-P585×3

585

50/75/100/120/150

HVD-AS-P710×1

710

50/75/100/120/150

HVD-AS-P710×2

710

50/75/100/120/150

HVD-AS-P710×3

710

50/75/100/120/150

HVD-AS-P800×1

800

50/75/100/120/150

HVD-AS-P800×2

800

50/75/100/120/150

HVD-AS-P800×3

800

50/75/100/120/150

HVD-AS-P800×4

800

50/75/100/120/150

https://www.hongvadar.com/products/air-dryer-system/

HVD-AD-P series air dryer dehydrator working system unit is composed of an air heater, air filter, disintegrating disc, thrower, venturi pipe, air drying pipe, cyclone separator, induced draft fan, and other equipment. The rapid movement of the heat-carrying airflow is used to suspend the dried material, and the change of the pulse tube with different diameter and airflow velocity is used to make the material keep rolling, strengthen the drying process and improve the heat transfer coefficient, so as to achieve the purpose of drying. The drying time is only about 3~5 minutes, and the temperature of the material to be dried should not exceed 60 degrees.

   HVD-AD-P series air dryer dehydrator working system can be widely used in powder, flake, heat-sensitive materials drying. Especially suitable for corn, potato, and other raw materials to produce starch, protein powder drying, and food, chemical, pharmaceutical, medical, agricultural, and sideline products and other granular loose materials drying.

 Main Feature Of Air Dryer System

High heat transfer coefficient, can continuously dry a large number of materials;

 Fast-drying speed, good material quality;

 Working under negative pressure, clean working environment and pollution-free;

 Low consumption;

 Easy operation, small area needed, and low investment.

 HongVadar relies on professional design, strict production management, the fine processing procedure, provides high efficiency and energy-saving instrument air dryer system and industrial air dryer in pneumatic systems for the customer. As a air dryer company, we make differnent commercial air dryer for sale. Large or small air dryer, warm or hot industrial air dryer, compact air dryer,air flash dryer etc. The manufacturing factory has passed the international ISO9001 quality system certification, and with the design and manufacturing capacity of pressure vessels. Customers can choose international ISO, American AWS, European EN, and other standards for equipment design and production according to their needs.

 Air Dryer System Technical Parameters

Model

Commercial starch output, T/H

Feed water content, %

Discharge moisture content, %

Steam consumption kg steam / kg water

Power kW

HVD-AD1.0-P7.5

1.0

＜40

12-14

1.8-2

7.5

HVD-AD2.0-P11

2.0

＜40

12-14

1.8-2

11

HVD-AD3.0-P22

3.0

＜40

12-14

1.8-2

22

HVD-AD4.0-P37

4.0

＜40

12-14

1.8-2

37

HVD-AD6.0-P90

6.0

＜40

12-14

1.8-2

90

HVD-AD10.0-P110

10.0

＜40

12-14

1.8-2

110

HVD-AD15.0-P132

15.0

＜40

12-14

1.8-2

132

HVD-AD20.0-P132

20.0

＜40

12-14

1.8-2

132

https://www.hongvadar.com/products/12-stage-hydrocyclone-system/

VD-HC-D series 12 stage starch washing hydrocyclone system is mainly used to extract refined starch milk, that is, to remove soluble and insoluble proteins and possible tiny fibers contained in starch milk.

   Structure and principle: the cyclone separator consists of housing, orifice plate, cover, cyclone tube, plug tube, etc.

 The working principle of hydrocyclone is as follows: The starch milk and the washing water go through the hydrocyclone system in a countercurrent way. The hydrocyclone system usually consists of 6 ~ 12 grades. Each stage contains a number of cyclone tubes which are housed in the housing of the cyclone separator and operate in parallel. Each stage of the rotary separator has a feeding interface, bottom flow interface, and overflow interface.

 Starch washing cyclone, bottom flow contains concentrated starch milk, overflow contains soluble substances and fine slag. The bottom flow of one stage is sent to the feeding pump of the middle stage along with the overflow of the previous stage. The starch milk first enters the first stage of the washing system, then is washed step by step to reach the required refined starch milk and leaves the system through the bottom flow of the last stage.

 The overflow contains dilute starch milk and impurities to be removed. This allows the washing water (which enters the washing system before the final stage) to leave the hydrocyclone system after passing through the stage 1 overflow, removing impurities such as proteins and fine fibrous residues.

 HongVadar relies on professional design, strict production management, the fine processing procedure, provides high efficiency and energy-saving equipment system for the customer. Mentoring is a critical part of the Troubleshooter's role in hydrocyclone troubleshooting.The manufacturing factory has passed the international ISO9001 quality system certification, and with the design and manufacturing capacity of pressure vessels. Mentoring is a critical part of the Troubleshooter's role in hydrocyclone troubleshooting. Customers can choose international ISO, EU CE, and other standards for equipment design and production according to their needs.

 Features of 12 Stage Hydrocyclone System

Good washing and refinery effect.

 Stable running and low failure rate.

 Easy operation and convenient maintenance.

 High production capacity.

  12-stage Hydrocyclone System Technical Parameter

Model

Type

Output capacity (starch ten thousand tons/year)

Feed pres. MPa

HVD-HC-D200-1

Horizontal

1~1.5

0.6-0.8

HVD-HC-D250-1

Horizontal

1.5~2

0.6-0.8

HVD-HC-D300-1

Horizontal/vertical

2.5

0.6-0.8

HVD-HC-D350-1

Horizontal/vertical

3

0.6-0.8

HVD-HC-D410-1

Horizontal/vertical

5

0.6-0.8

HVD-HC-D450-1

Horizontal/vertical

6

0.6-0.8

HVD-HC-D350-2

Horizontal/vertical

6

0.6-0.8

HVD-HC-D410-2

Horizontal/vertical

10

0.6-0.8

HVD-HC-D450-2

Horizontal/vertical

12

0.6-0.8

HVD-HC-D500-2

Vertical

15

0.6-0.8

HVD-HC-D560-2

Vertical

20

0.6-0.8

HVD-HC-D600-2

Vertical

24

0.6-0.8

HVD-HC-D750-2

Vertical

30

0.6-0.8

https://www.hongvadar.com/products/

Advanced agriculture process engineering machinical types of equipment, testing instruments, sophisticated manufacturing production technology in agriculture, and strict & perfect quality management system. Hongvadar agricultural product processing held the ISO9001 quality system certification. Most science & technology teams with professional agriculture production technology. Leading level of science to make full use of the new processes, new technology, new materials to ensure the stability and reliability of products in agriculture step by step process.

 Agricultural and Sideline Products Processing Equipment

Fixed fluidized bed dryer effectively reduces the dust leakage in the soft connection part of agricultural food processing, improves the production environment, reduces the equipment failure rate, and reduces the civil construction investment.

 High efficiency. First-in-first-out, effective prevention and control of product color difference.

 Spray Granulation Fluidized Bed Drying System

 High density, uniform moisture, high strength, good sphericity, not easy to absorb moisture, good fluidity, and other characteristics of dry products.

 No dust, no peculiar smell, vacuum operation, and clean site environment during granulation and drying process of agricultural food production process.

 Energy recycling and utilization, low energy consumption.

 Suitable for the products in farm produce processing with general requirements on crystal shape and size, and with high concentration discharging.

 Various evaporative crystallization systems can be designed according to the characteristics of materials and the evaporation capacity.

 Continuous feed, continuous discharge.

 Relatively low temp. evaporation, fast evaporation speed, high evaporation concentration, and the relatively high viscosity of the liquid material are not easy to scale or block, which can achieve the maximum crystal ratio under the same energy consumption.

 Rotary Vacuum Filter

Personalized design to meet the needs of different customers;

 High production capacity, low wet of filter cake, easy to unload;

 Continuous automaticand simple operation in agricultural products processing and storage;

 The high clarity of filtrate and high recovery rate of materials .

 Running stably, highly efficient and energy-saving & low steam consumption.

 High concentration ratio in food processing of agricultural products

 Low evaporation temp, suitable for the concentration of heat-sensitive materials.

 High separation effect and greater flexible operation

 Arc Screen

High production capacity

 Good screening effect

 Safe and reliable use

 Compact structure and reasonable configuration

 Bundle Dryer

Wide range of drying materials

 Large moisture evaporation

 Low energy consumption

 Easy operation and convenient maintenance

 Air Dryer System

High heat transfer coefficient, can continuously dry large number of materials.

 Fast drying speed, good material quality.

 Energy saving and low consumption in processing of agricultural produce

 Easy operation, small area needed, and low investment.

 Desand Cyclone and Germ Cyclone

Advanced design

 Easy installation

 Large production capacity range

 Compact structure and reasonable configuration

 Squeezer & Extruder

Continuous production with high dehydration efficiency in processing of farm produce

 Simple structure, easy to use and maintain.

 Compact structure, small floor space, and convenient transportation.

 Stable running and low failure rate.

 Degerminator/Degerm Mill

Good grinding effect.

 Stable running and low failure rate.

 Easy operation and convenient maintenance.

 Compact structure and reasonable configuration.

 Good milling effect.

 Compact structure and reasonable configuration.

 Short process route.

 Large production capacity.

 12-stage Hydrocyclone System

Good washing and refinery effect.

 Stable running and low failure rate.

 Easy operation and convenient maintenance.

 High production capacity.

 Peeler Centrifuge

Peeler Centrifuge

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Fully automatic operation with low manual labor intensity;

 Each actuator adopts a hydraulic system for automatic control, stable and reliable operation;

 Electric adopts PLC control, accurate movement, convenient adjustment;

 Drive-by VFD or hydraulic coupler, smooth start and stop.

 Disc Separator

Large rotary drum diameter, large disc area, strong processing (separation) ability, the good separation effect;

 Using the upper suspension drive, so that the separator has a high degree of rotation stability, and greatly improved the service life of the bearing and spindle;

 Automatic control of lubricating oil circuit is adopted to protect the driving system and extend the service life of the driving system;

 Liquefaction System

High efficiency and high conversion rate.

 Automatic intelligent control, stable production and low labor cost.

 Better flocculation effect of the protein, which is conducive to the subsequent process and the separation of the protein in crop process engineering.

 Easy operation and convenient maintenance.

 Saccharification System

High saccharification efficiency.

 Automatic intelligent control, not easy to stain.

 Accurate saccharification, not easy to produce other miscellaneous sugars in  crop production processing.

 Taking side agitator, low energy consumption, even mixing and good mixing effect

 Full Automatic Intelligent Ion Exchange System

Serial column desorption, low concentration to push high concentration, solves the problem of washing water strip.

 Column regeneration makes the regenerator fully utilized and reduces the consumption of the regenerator.

 Column washing reduces the amount of washing water and reduces the discharge qty. of sewage.

Chromatography System

High purity product, stable running and low failure rate.

 Best separation effect and high production yield.

 Low water consumption and low energy consumption.

 Automatic intelligent control with low labor cost.

 Membrane Filter System

Intelligent control, stable running and low failure rate.

 Easy operation and convenient maintenance.

 Compact structure and reasonable configuration.

 High production capacity.

 Isomerization System

Easy to install and save equipment compared with traditional equipment.

 High operation accuracy, high speed and high efficiency. Use control instrument for operation control to ensure accurate and high quality products.

 PLC operation is convenient and production is stable.

 High production capacity.

 Fast drying speed, only a few seconds to complete.

 Suitable for drying heat-sensitive materials.

 Wide range of use.

 Simplified production process and easy operation & control.

 Crystallizer

Horizontal Crystallizer.

 The transmission device has a compact structure, stable operation, high efficiency, and low noise.

 Reliable mechanical seal, shortstop time.

 The small gap between the spiral belt and the barrel body, uniform stirring, not blocked.

 Stainless steel inner cylinder, corrosion resistance, long service life.

 Centrifuge

Automatic control to ensure the separation effect.

 Stepless speed regulation.

 Wide speed range.

 Large starting and braking torque.

 Filter Press

The upper part of the main beam is covered with 304 stainless steel, which can effectively reduce the friction resistance between the filter plate and the main beam and reduce the working strength;

 Filter plate adopts new raw materials and formula, high pressure molding, high strength, high working pres, high filtration efficiency, no blocking, no breaking plate, with high strength, light weight, high temp. resistance, corrosion resistance, acid and alkali resistance, non-toxic, tasteless and other characteristics;

 Equipped with a variety of safety devices to ensure the safety of operators, simple operation, convenient maintenance;

 It optional equipped with PLC control, automatic plate shifting, automatic unloading, automatic drip tray, diaphragm pressing, open flow or dark flow, washing/blowing mode, high temp. resistance of filter board, etc.