CN114674119A - Frost-inhibiting powder cold drying machine - Google Patents
Frost-inhibiting powder cold drying machine Download PDFInfo
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- CN114674119A CN114674119A CN202210340776.2A CN202210340776A CN114674119A CN 114674119 A CN114674119 A CN 114674119A CN 202210340776 A CN202210340776 A CN 202210340776A CN 114674119 A CN114674119 A CN 114674119A
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- 239000000843 powder Substances 0.000 title claims abstract description 28
- 238000001035 drying Methods 0.000 title claims description 17
- 230000002401 inhibitory effect Effects 0.000 title claims description 10
- 238000001816 cooling Methods 0.000 claims abstract description 55
- 238000000227 grinding Methods 0.000 claims abstract description 10
- 230000001629 suppression Effects 0.000 claims description 2
- 239000003507 refrigerant Substances 0.000 abstract description 23
- 239000007788 liquid Substances 0.000 abstract description 17
- 238000010257 thawing Methods 0.000 abstract description 10
- 238000005265 energy consumption Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 5
- 238000001704 evaporation Methods 0.000 description 9
- 230000008020 evaporation Effects 0.000 description 9
- 239000000463 material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000004378 air conditioning Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000011555 saturated liquid Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000004017 vitrification Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
- F26B5/06—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum the process involving freezing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/003—Filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Molecular Biology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Other Air-Conditioning Systems (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The utility model provides a but cold machine of doing of frost type powder, includes the frame, be equipped with a plurality of parallel multistage cooling circuit in the frame, cooling circuit all is connected to same heat exchanger at different levels, heat exchanger one side is equipped with utilizes the heat exchanger for grinding the refrigerated first draught fan of air supply, last one-level cooling circuit have the second heat exchanger at heat exchanger exit end series connection, second heat exchanger one side is equipped with post air conditioner forced draught blower, the post air conditioner subassembly that the cooperation post air conditioner forced draught blower of second heat exchanger formed the operation post space that the staff created cooling, few dirt. The post air conditioner has reasonable and compact structure, ensures comfortable post environment by taking the fresh air temperature of the post air conditioner component as the air supply of the post air conditioner, can reduce the defrosting frequency and period of a unit, reduces the fluctuation of the cooling air supply temperature, saves the energy consumption of a system, ensures that all the outlets of the second heat exchanger are gaseous refrigerant to be sucked into the compressor, avoids the air suction and liquid carrying faults of the compressor, has good use effect and is suitable for popularization.
Description
Technical Field
The invention relates to the technical field of processing equipment, in particular to a powder cold drying machine, and specifically relates to a frost-inhibiting powder cold drying machine.
Background
The traditional powder coating production process mainly comprises the working procedures of mixing and dispersing, melt extrusion, flaking and crushing, micro powder grinding, inspection and packaging and the like. In the process of producing the micro powder, the materials are uniformly mixed in a viscous flow state through an extruder, the temperature of the materials is generally 90-130 ℃, and the semi-finished product of the sheet material can be obtained through cooling rolling sheet making and air cooling crushing again. The temperature of the material is generally 35-55 ℃ when the material enters the micro-powder grinding equipment. The tablets are physically crushed by mechanical friction, a powder cold drying machine is generally adopted to cool the grinding part, because the air is supplied at room temperature and the temperature is-6 to 6 ℃ when the air is discharged, the existing powder cooling unit in the industry is provided with a cold multistage cooling evaporator, when the fresh air subjected to multistage cooling treatment reaches the last stage evaporator of the unit, the fresh air reaches the dew point temperature, the evaporation temperature of the last stage evaporator is below 0 ℃, the frosting is inevitable, the unit needs frequent defrosting after frosting, the existing defrosting method is that electromagnetic valves are additionally arranged on the front and rear high-low pressure sides of a unit cooling loop expansion valve for continuous switching, high-temperature liquid refrigerant in front of the expansion valve directly enters the evaporator to be defrosted, and the common method is heating and defrosting, so that the energy consumption of the unit is high, and the air outlet temperature of the unit cannot be stably stabilized at-6 to 6 ℃ due to frequent heating and defrosting.
The temperature of a finished product obtained after crushing is generally higher than 45 ℃, but the vitrification temperature of the finished product is generally not higher than 52 ℃, the fluctuation of the air outlet temperature is increased, so that the efficiency of the micro powder process is greatly reduced, the power energy consumption is improved, the particle size distribution of the material micro powder is uneven, the particle shape is irregular, the powder coating is easy to agglomerate due to overhigh temperature, the product rejection rate is high, the product quality is unstable, the use efficiency of the coating is reduced, the powder agglomeration is caused to influence the milling quality, in addition, the frequent bypass defrosting of the unit causes a large amount of liquid refrigerants to exist in a last-stage cooling loop evaporator of the unit, and the safety hazard exists in the air suction zone liquid of a compressor.
Still another problem is that when powder workshop operation, the powder violently flies, and operating space temperature is high, if set up post air conditioner cooling alone and tend to increase extra energy consumption and cost, under the condition that the operative employee went to work 8 hours a day, the post environment was abominable very badly undoubtedly. In order to meet the market demands and solve the problems that the air outlet temperature fluctuates, the compressor sucks air and carries liquid, the cooling unit has high energy consumption, the post environment is poor and the like caused by frequent defrosting of the existing unit, an energy-saving frost-inhibiting powder cold drying unit of a post air conditioner is needed at present.
Disclosure of Invention
The invention aims to solve the problems in the prior art, provides a frost-inhibiting powder cold dryer, solves the problems of fluctuation of outlet air temperature, liquid entrainment of air suction of a compressor, high energy consumption of a cooling unit, poor post environment and the like caused by frequent defrosting of the existing cold dryer unit, and meets the requirements of stabilizing outlet air, reducing energy consumption and improving the post environment.
The technical scheme adopted by the invention for solving the technical problems is as follows: the frost suppression type powder cold dryer comprises a frame, wherein a plurality of parallel multistage cooling loops are arranged in the frame, each cooling loop is connected to the same heat exchanger, a first induced draft fan for grinding and air supply cooling by using the heat exchanger is arranged on one side of the heat exchanger, a second heat exchanger is connected in series at the outlet end of the heat exchanger of the last cooling loop, a post air conditioner air feeder is arranged on one side of the second heat exchanger, and the second heat exchanger is matched with the post air conditioner air feeder to form a post air conditioner assembly for creating a cooling and dust-free operation post space for workers. After the arrangement, because the air outlet temperature of the cooling system is generally-6 to 6 ℃, the evaporator begins to frost when the evaporation temperature is generally lower than 0 ℃, the lower the evaporation temperature is, the more serious the evaporator frosts, the more frequent the unit frosts, the longer the period is, the frosting can affect the insufficient heat exchange of the evaporator, the liquid refrigerant in the evaporator can not be completely vaporized, and the liquid refrigerant at the outlet of the evaporator returns to the compressor to cause the air suction and liquid entrainment of the compressor, so that the potential safety hazard exists. Therefore, in the design scheme, a post air-conditioning component with evaporation pressure regulation is additionally arranged in a cooling loop of the last-stage air supply, and a specially designed post air-conditioning component is additionally arranged from the outlet of the heat exchanger of the last-stage cooling loop to the air suction port of the compressor. The post air conditioner component consists of a second heat exchanger and a post air conditioner blower, the refrigerant at the outlet of the heat exchanger is a gas-liquid mixed low-temperature refrigerant, the refrigerant enters the post second heat exchanger through an air suction pipe and exchanges heat with fresh air at the inlet of the post air conditioner component, the fresh air of the second heat exchanger is used for cooling the last-stage cooling loop heat exchanger, the frequency and the period of defrosting of the unit are reduced, the fluctuation of the temperature of the cooled air supply is reduced, the energy consumption of the system is saved, the fresh air temperature is used for supplying air to the post air conditioner, the condition that the outlet of the second heat exchanger is completely sucked into the compressor by the gaseous refrigerant is ensured, and the fault that the compressor sucks air with liquid is avoided. The post air conditioning assembly can also blow away the close dust by utilizing the air outlet advantage, so that a post space with relatively less dust is created, and the breathing safety is ensured.
As a further improvement of the invention, the cooling loop comprises a compressor, a condenser, a drying filter and a thermal expansion valve, and the connecting structure of the cooling loop is that the compressor is sequentially connected with the condenser, the drying filter and the thermal expansion valve from an air outlet and is connected to an air suction port of the compressor through a heat exchanger. The refrigerant in the cooling loop is compressed by a compressor, low-temperature low-pressure gas is changed into high-temperature high-pressure gas, the high-temperature high-pressure gas exchanges heat with external water in a condenser and is cooled to be changed into normal-temperature high-pressure liquid, the normal-temperature high-pressure liquid is filtered and dried by a filter and then enters an expansion valve for gas expansion, so that a mixture of the normal-temperature high-pressure gas and the normal-temperature high-pressure liquid is changed into low-temperature low-pressure refrigerant saturated liquid, and the process is completed by utilizing the principle that the gas expansion needs to absorb heat. Finally, the low-temperature low-pressure refrigerant saturated liquid cools the fresh air through the heat exchanger, the refrigerant evaporates in the heat exchanger, the refrigerant evaporates and needs to absorb heat, and the refrigerant is conveyed into a grinding disc of the grinding machine through the induced draft fan, so that the grinding machine is cooled, however, the heat medium is cooled to become a cold medium, the refrigerant saturated liquid is changed into low-temperature low-pressure gas to enter the compressor for compression, and a cycle is formed.
As a further improvement of the invention, the second heat exchanger is connected in series between the outlet end of the heat exchanger and the air suction end of the compressor, namely, the last-stage cooling loop connecting structure is that the compressor is sequentially connected with a condenser, a drying filter, a thermostatic expansion valve, the heat exchanger and the second heat exchanger from the air outlet and is finally connected back to the air suction end of the compressor. After the arrangement, a refrigerant inlet of the second heat exchanger is connected with a refrigerant outlet of the last stage of cooling loop heat exchanger, a refrigerant outlet of the second heat exchanger is connected with an air suction port of a compressor of the last cooling loop, outdoor fresh air enters a post air conditioner for cooling and then is supplied to a workshop station for the post air conditioner, when the air outlet temperature of the last stage of heat exchanger of the powder cooling unit is between-6 and 6 ℃, the evaporation temperature is below 0 ℃, the heat exchanger begins to frost, the heat exchange of the heat exchanger is insufficient, the refrigerant at the outlet of the heat exchanger is a gas-liquid mixed low-temperature refrigerant, enters the post second heat exchanger through an air suction pipe and exchanges heat with the fresh air at the inlet of the post air conditioner, the inflowing low-temperature liquid refrigerant exchanges heat and evaporates, the evaporation pressure in the second heat exchanger is increased while the outlet pressure of the last stage heat exchanger at the upstream is driven to be increased, so that the evaporation pressure and the evaporation temperature of the last stage heat exchanger are increased, along with the rise of the evaporation temperature, the frosting degree of the last stage heat exchanger is delayed, and the frosting severity degree of the last stage heat exchanger is restrained.
As a further improvement of the invention, the air outlet end of the air feeder of the post air conditioner is connected with a horn-shaped air outlet, the upper end and the lower end of the inner wall of the air outlet are connected with vertical rods which are vertically arranged, the vertical rods are sleeved with round balls with hollow structures, and the vertical rods and the round balls are in clearance fit. Post air conditioner forced draught blower during operation, wind is worn out from the air outlet, and the air current drives the ball on the montant and floats this moment, plays the effect of cutting apart the air current, increases the air-out scope, can radiate bigger area, and the cooling effect is also better.
As a further improvement of the invention, two ends of the thermostatic expansion valve of the last stage cooling loop are connected with electromagnetic valves. The electromagnetic valve is on-off, and the thermostatic expansion valve is matched with the electromagnetic valve for use, so that the problem that the thermostatic expansion valve cannot be completely closed can be well solved, and the stable and normal operation of a cooling system is ensured.
As a further improvement of the invention, the condenser is a water-cooled condenser, and the heat exchanger and the second heat exchanger are both fin type heat exchangers. After the arrangement, the working efficiency of the condenser and the heat exchanger adopting the type is higher, the cost performance is high, and the using effect is better.
The invention has the beneficial effects that: the post air conditioner has a reasonable and compact structure, the fresh air temperature of the post air conditioner component is used as the air supply of the post air conditioner, the comfort of the post environment is ensured, the defrosting frequency and period of the unit can be reduced, the fluctuation of the cooling air supply temperature is reduced, the energy consumption of the system is saved, the condition that all the outlets of the second heat exchangers are sucked into the compressor by gaseous refrigerants is ensured, the air suction and liquid carrying faults of the compressor are avoided, the service life of equipment is prolonged, the use effect is good, and the post air conditioner is suitable for popularization.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the air outlet.
Description of reference numerals: the device comprises a heat exchanger 1, a first induced draft fan 2, a second heat exchanger 3, a post air conditioner blower 4, a compressor 5, a condenser 6, a drying filter 7, a thermal expansion valve 8, an air outlet 9, a vertical rod 10, a ball 11 and an electromagnetic valve 12.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
with reference to the accompanying drawings: the frost-inhibiting powder cold dryer in the embodiment comprises a frame, wherein a plurality of parallel multistage cooling loops are arranged in the frame, all cooling loops are connected to the same heat exchanger 1, a first induced draft fan 2 for grinding and supplying air and cooling by utilizing the heat exchanger 1 is arranged on one side of the heat exchanger 1, a second heat exchanger 3 is connected to the outlet end of the heat exchanger 1 of the last stage of cooling loop in series, a post air conditioner blower 4 is arranged on one side of the second heat exchanger 3, and the second heat exchanger 3 is matched with the post air conditioner blower 4 to form a post air conditioner component for creating a cooling and dust-free operation post space for a worker.
The cooling loop comprises a compressor 5, a condenser 6, a drying filter 7 and a thermal expansion valve 8, and the connecting structure of the cooling loop is that the compressor 5 is sequentially connected with the condenser 6, the drying filter 7 and the thermal expansion valve 8 from an air outlet and is connected to an air suction port of the compressor 5 through a heat exchanger 1.
The second heat exchanger 3 is connected in series between the outlet end of the heat exchanger 1 and the suction end of the compressor, namely, the last-stage cooling loop connecting structure is that the compressor 5 is sequentially connected with the condenser 6, the drying filter 7, the thermostatic expansion valve 8, the heat exchanger 1 and the second heat exchanger 3 from the air outlet and is finally connected with the suction port of the compressor 5.
The air outlet end of the post air-conditioning blower 4 is connected with a horn-shaped air outlet 9, the upper end and the lower end of the inner wall of the air outlet 9 are connected with vertical rods 10 which are vertically arranged, the vertical rods 10 are sleeved with round balls 11 which are of hollow structures, and the vertical rods 10 and the round balls 11 are in clearance fit.
Two ends of the thermostatic expansion valve 8 of the last stage cooling loop are connected with electromagnetic valves 12.
Preferably, the condenser 6 is a water-cooled condenser, and the heat exchanger 1 and the second heat exchanger 3 are fin-type heat exchangers.
While the invention has been shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.
Claims (6)
1. The utility model provides a frost suppression type powder cold drying machine, includes the frame, characterized by: be equipped with a plurality of parallel multistage cooling circuit in the frame, at every stage cooling circuit all is connected to on same heat exchanger (1), heat exchanger (1) one side is equipped with and utilizes heat exchanger (1) for grinding the first draught fan (2) of air supply cooling, last one-level cooling circuit's at heat exchanger (1) exit end series connection have second heat exchanger (3), second heat exchanger (3) one side is equipped with post air conditioner forced draught blower (4), second heat exchanger (3) cooperation post air conditioner forced draught blower (4) are formed into the post air conditioner subassembly that the staff created the operation post space of cooling, few dirt.
2. The frost-inhibiting powder freeze dryer according to claim 1, characterized in that: the cooling circuit comprises a compressor (5), a condenser (6), a drying filter (7) and a thermal expansion valve (8), wherein the cooling circuit connecting structure is used for connecting the compressor (5) with the condenser (6), the drying filter (7) and the thermal expansion valve (8) in sequence from an air outlet to an air suction port of the compressor (5) through a heat exchanger (1).
3. The frost-inhibiting powder freeze dryer of claim 2, wherein: the second heat exchanger (3) is connected in series between the outlet end of the heat exchanger (1) and the air suction end of the compressor, namely the last stage of the cooling loop connecting structure is that the compressor (5) is sequentially connected with the condenser (6), the drying filter (7), the thermostatic expansion valve (8), the heat exchanger (1) and the second heat exchanger (3) from the air outlet and then is connected with the air suction port of the compressor (5).
4. The frost-inhibiting powder freeze dryer of claim 1, wherein: the air outlet end of the post air conditioner blower (4) is connected with a horn-shaped air outlet (9), the upper end and the lower end of the inner wall of the air outlet (9) are connected with vertical rods (10) which are vertically arranged, the vertical rods (10) are sleeved with round balls (11) which are of hollow structures, and the vertical rods (10) and the round balls (11) are in clearance fit.
5. The frost-suppressing powder freeze dryer according to claim 1 or 2, characterized in that: and two ends of a thermostatic expansion valve (8) of the last stage of the cooling loop are connected with electromagnetic valves (12).
6. The frost-inhibiting powder freeze dryer of claim 1, wherein: the condenser (6) is a water-cooled condenser, and the heat exchanger (1) and the second heat exchanger (3) are fin type heat exchangers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210340776.2A CN114674119B (en) | 2022-04-02 | 2022-04-02 | Frosting-inhibiting type powder cold dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210340776.2A CN114674119B (en) | 2022-04-02 | 2022-04-02 | Frosting-inhibiting type powder cold dryer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114674119A true CN114674119A (en) | 2022-06-28 |
| CN114674119B CN114674119B (en) | 2024-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210340776.2A Active CN114674119B (en) | 2022-04-02 | 2022-04-02 | Frosting-inhibiting type powder cold dryer |
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| Country | Link |
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| CN (1) | CN114674119B (en) |
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| CN204827981U (en) * | 2015-08-14 | 2015-12-02 | 江西佳通通风设备有限公司 | High -efficient mixed flow fan |
| CN105841236A (en) * | 2016-03-28 | 2016-08-10 | 广东美的制冷设备有限公司 | Indoor unit of air conditioner |
| CN206291435U (en) * | 2016-12-07 | 2017-06-30 | 王越 | Dust-proof air conditioning air outlet |
| CN106870448A (en) * | 2017-04-05 | 2017-06-20 | 浙江兴益风机电器有限公司 | A kind of novel material conveys centrifugal blower |
| CN207422358U (en) * | 2017-06-29 | 2018-05-29 | 浙江创力电子股份有限公司 | Base station multistage cooling and energy conserving system |
| CN207903513U (en) * | 2017-11-29 | 2018-09-25 | 张家港市金马星机械制造有限公司 | A kind of PET baling lines ventilating device |
| CN109442891A (en) * | 2018-09-21 | 2019-03-08 | 上海伯涵热能科技有限公司 | A kind of dehumidifying drying unit and drying unit that efficient dehumidification combination module being pre-chilled using air inlet |
| CN109681990A (en) * | 2018-12-28 | 2019-04-26 | 杰马科技（中山）有限公司 | Cooling fan with sleeve heat exchange system |
| CN113544446A (en) * | 2019-03-07 | 2021-10-22 | 艾默生环境优化技术有限公司 | Climate control system with absorption chiller |
| CN211261132U (en) * | 2019-11-29 | 2020-08-14 | 南京五洲制冷集团有限公司 | Full fresh air step cooling roof type air conditioning unit |
| CN214276312U (en) * | 2021-01-15 | 2021-09-24 | 浙江青风环境股份有限公司 | Triple-generation multifunctional powder cold drying machine |
| CN215675994U (en) * | 2021-06-28 | 2022-01-28 | 海信容声(广东)冰箱有限公司 | A kind of refrigerator |
| CN216044517U (en) * | 2021-10-27 | 2022-03-15 | 湖南联诚轨道装备有限公司 | Low-noise cooling fan for cooling tower of electric locomotive |
| CN113834338A (en) * | 2021-11-03 | 2021-12-24 | 北京金帛科技有限公司 | Short-flow suspension calcining cooling device |
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