CN112414031A - Efficient dehydration energy-saving environment-friendly dryer - Google Patents
Efficient dehydration energy-saving environment-friendly dryer Download PDFInfo
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- CN112414031A CN112414031A CN202011365596.7A CN202011365596A CN112414031A CN 112414031 A CN112414031 A CN 112414031A CN 202011365596 A CN202011365596 A CN 202011365596A CN 112414031 A CN112414031 A CN 112414031A
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- Prior art keywords
- heat pump
- air
- communicated
- compressor
- air compressor
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
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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
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
- F26B21/002—Drying-air generating units, e.g. movable, independent of drying enclosure heating the drying air indirectly, i.e. using a heat exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
- F26B21/04—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure partly outside the drying enclosure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/08—Humidity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/10—Temperature; Pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
- F26B25/063—Movable containers or receptacles, e.g. carts, trolleys, pallet-boxes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention relates to the technical field of dryers, and discloses an efficient dehydration energy-saving environment-friendly dryer which comprises a drying room material chamber and a machine room, wherein a plurality of material vehicles which are arranged side by side are arranged in the drying room material chamber, and an air compressor, an air compressor radiator, a high-pressure dehydrator, a heat pump compressor, a heat pump high-temperature heating condenser, a low-temperature dehydration evaporator, a first pneumatic fan and a second pneumatic fan are arranged in the machine room; the air inlet of the air compressor is communicated with the high-humidity air collecting port, the air compressor is communicated with the air compressor radiator through an air outlet pipe, and the air compressor radiator is communicated with the high-pressure dehydrator through a high-pressure air inlet pipe. This energy-concerving and environment-protective drying-machine of high-efficient dehydration utilizes the high humid gas heating material in heat pump and compression baking house material room to combine the principle of high-humid gas low cold to carry out high-efficient dehydration, when possessing the circulation energy consumption of taking a breath that has reduced electric fan for the tradition, can also effectively dispel the heat for heat pump compressor's aircraft nose department, make the temperature of baking house higher, make equipment moving more stable, advantage that life is longer.
Description
Technical Field
The invention relates to the technical field of dryers, in particular to a high-efficiency dehydration energy-saving environment-friendly dryer.
Background
The heat pump is a high-efficiency energy-saving device which makes full use of low-grade heat energy. Heat can be transferred spontaneously from a high temperature object to a low temperature object, but cannot proceed spontaneously in the opposite direction. The working principle of the heat pump is a mechanical device which forces heat to flow from a low-temperature object to a high-temperature object in a reverse circulation mode, and the heat pump can obtain larger heat supply amount only by consuming a small amount of reverse circulation net work, and can effectively utilize low-grade heat energy which is difficult to apply to achieve the purpose of energy conservation.
At present, the traditional heat pump dryer basically adopts a motor blower to perform air supply circulation, the power consumption of the motor blower is higher, the long-term operation in the drying process accounts for 30-60% of the energy consumption of the dryer, the electric power of the motor blower is single in function, the electric power is not reasonably utilized, and the electric energy is wasted.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the high-efficiency dehydration energy-saving environment-friendly dryer, which utilizes a heat pump and high-humidity gas in a material chamber of a compression drying room to heat materials, and combines the high-humidity gas with a high-pressure low-cooling principle to carry out high-efficiency dehydration, so that the energy consumption of the ventilation circulation of the traditional electric fan is reduced, meanwhile, the effective heat dissipation can be carried out at the machine head of a heat pump compressor, the temperature of the drying room is higher, the equipment is more stable in operation, and the service life is longer.
(II) technical scheme
In order to achieve the purposes of reducing the energy consumption of the traditional electric fan, effectively radiating heat at the head of a heat pump compressor, enabling the temperature of a drying room to be higher, enabling the equipment to operate more stably and prolonging the service life, the invention provides the following technical scheme: an efficient dehydration energy-saving environment-friendly dryer comprises a drying room material chamber and a machine room, wherein a plurality of material vehicles are arranged in the drying room material chamber side by side, and an air compressor, an air compressor radiator, a high-pressure dehydrator, a heat pump compressor, a heat pump high-temperature heating condenser, a low-temperature dehydration evaporator, a first pneumatic fan and a second pneumatic fan are arranged in the machine room;
the air inlet of the air compressor is communicated with the high-humidity air collecting port, the air compressor is communicated with the air compressor radiator through an air outlet pipe, the air compressor radiator is communicated with the high-pressure dehydrator through a high-pressure air inlet pipe, the output end of the high-pressure dehydrator is communicated with the input ends of the first pneumatic fan and the second pneumatic fan through a dry air high-pressure air outlet pipe, and the air outlet of the dry air high-pressure air outlet pipe is communicated with the heat pump compressor;
the heat pump compressor is fixedly communicated with the heat pump high-temperature heating condenser through a first communicating pipe, the heat pump high-temperature heating condenser is communicated with the high-pressure dehydrator through a second communicating pipe, the high-pressure dehydrator is communicated with the low-temperature dehydration evaporator through a third communicating pipe, and the low-temperature dehydration evaporator is fixedly communicated with the heat pump compressor through a fourth communicating pipe.
Preferably, a labyrinth type gas-water separator is arranged in the high-pressure dehydrator, and one end of the high-pressure dry air outlet pipe is communicated with the labyrinth type gas-water separator.
Preferably, an oil-liquid separator is arranged on the first communicating pipe, and the oil-liquid separator is fixedly communicated with the fourth communicating pipe through a fifth communicating pipe.
Preferably, an expansion valve is disposed on the second communication pipe.
Preferably, the lower end of the high-pressure dehydrator is fixedly communicated with a first drainage pipe, and a drainage control valve is arranged on the first drainage pipe.
Preferably, the lower end of the low-temperature dehydration evaporator is fixedly communicated with a second water drainage pipe.
Preferably, the first pneumatic fan is positioned on one side of the radiator of the air compressor.
Preferably, the second pneumatic fan is positioned at one side of the heat pump high-temperature heating condenser.
Preferably, the four corners of the bottom of the material trolley are fixedly connected with supporting rollers.
(III) advantageous effects
Compared with the prior art, the invention provides an efficient dehydration energy-saving environment-friendly dryer, which has the following beneficial effects:
the efficient dehydration energy-saving environment-friendly dryer is characterized in that materials are placed on a shelf and placed into a material vehicle after being placed in a plate through the material vehicle, the whole vehicle is pushed into a material chamber of a drying room to be dried in a totally-enclosed heat-insulating space environment, high-humidity air is sucked from a high-humidity air intake after being started through an air compressor, the high-pressure, high-temperature and high-humidity air is generated after being compressed through the air compressor and then is sent into an air compressor radiator from an air outlet pipe to be subjected to heat exchange, the high-pressure and high-humidity air after being converted is sent into a high-pressure dehydrator through a high-pressure air inlet pipe to be subjected to freeze dehydration, the dried high-pressure air obtained after the air-water separation of a labyrinth air-water separator drives a first pneumatic fan and a second pneumatic fan, the air flow of the drying room starts to circulate, the exhaust of pneumatic air supply cools the head of the heat pump, meanwhile, the heat pump compressor is started simultaneously, heat energy is generated in the heat pump high-temperature heating condenser, the drying room is heated under the action of pneumatic air supply, the converted refrigerant enters a coil pipe of the high-pressure dehydrator through an expansion valve for refrigeration and is dehydrated for the first time, then enters the low-temperature evaporation dehydrator for secondary dehydration and conversion and returns to the heat pump compressor, the cycle of primary conversion and dehydration is completed, the air compressor and the heat pump compressor simultaneously supply heat and are sent out from one side of the machine room, the compressed air provides kinetic energy to drive the air blower to carry out cycle ventilation on air flow of the drying room, the materials are heated and dehydrated, the heat energy is reasonably utilized, the moisture in the material room is dehydrated for two times by combining scientific dew point control, the dehydrated compressed air drives the first pneumatic fan and the second pneumatic fan to carry out cycle ventilation on the air flow, and the energy consumption of the traditional electric fan is, the heat pump compressor can also effectively dissipate heat at the machine head, so that the temperature of the drying room is higher, the equipment is more stable to operate, and the service life is longer.
Drawings
FIG. 1 is a schematic structural view of an efficient dewatering energy-saving environment-friendly dryer according to the present invention;
FIG. 2 is a schematic flow chart of the working principle of the efficient dehydration energy-saving environment-friendly dryer provided by the invention.
In the figure: 1 drying room material chamber, 2 machine rooms, 3 material vehicles, 4 air compressors, 5 air compressor radiators, 6 high-pressure dehydrators, 7 heat pump compressors, 8 heat pump high-temperature heating condensers, 9 low-temperature dehydration evaporators, 10 first pneumatic fans, 11 second pneumatic fans, 12 high-humidity air gas inlets, 13 air outlet pipes, 14 high-pressure air inlet pipes, 15 dry air high-pressure air outlet pipes, 16 first communicating pipes, 17 second communicating pipes, 18 third communicating pipes, 19 fourth communicating pipes, 20 labyrinth type gas-water separators, 21 oil-liquid separators, 22 fifth communicating pipes, 23 expansion valves, 24 first drain pipes, 25 drain control valves and 26 second drain pipes.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, an efficient dehydration energy-saving environment-friendly dryer comprises a drying room material chamber 1 and a machine room 2, wherein a plurality of material vehicles 3 arranged side by side are arranged in the drying room material chamber 1, and an air compressor 4, an air compressor radiator 5, a high-pressure dehydrator 6, a heat pump compressor 7, a heat pump high-temperature heating condenser 8, a low-temperature dehydration evaporator 9, a first pneumatic fan 10 and a second pneumatic fan 11 are arranged in the machine room 2
An air inlet of the air compressor 4 is communicated with a high-humidity air collecting port 12, the air compressor 4 is communicated with the air compressor radiator 5 through an air outlet pipe 13, the air compressor radiator 5 is communicated with the high-pressure dehydrator 6 through a high-pressure air inlet pipe 14, the output end of the high-pressure dehydrator 6 is communicated with the first pneumatic fan 10 and the second pneumatic fan 11 through a dry air high-pressure air outlet pipe 15, and an air outlet of the dry air high-pressure air outlet pipe 15 is communicated with the heat pump compressor 7;
the heat pump compressor 7 is fixedly communicated with the heat pump high-temperature heating condenser 8 through a first communicating pipe 16, the heat pump high-temperature heating condenser 8 is communicated with the high-pressure dehydrator 6 through a second communicating pipe 17, the high-pressure dehydrator 6 is communicated with the low-temperature dehydration evaporator 9 through a third communicating pipe 18, and the low-temperature dehydration evaporator 9 is fixedly communicated with the heat pump compressor 7 through a fourth communicating pipe 19.
A labyrinth type gas-water separator 20 is arranged in the high-pressure dehydrator 6, and one end of the dry air high-pressure air outlet pipe 15 is communicated with the labyrinth type gas-water separator 20.
The first communication pipe 16 is provided with an oil-liquid separator 21, and the oil-liquid separator 21 and the fourth communication pipe 19 are fixedly communicated with each other through a fifth communication pipe 22.
The second communication pipe 17 is provided with an expansion valve 23.
The lower end of the high-pressure dehydrator 6 is fixedly communicated with a first drainage pipe 24, and a drainage control valve 25 is arranged on the first drainage pipe 24.
The lower end of the low-temperature dehydration evaporator 9 is fixedly communicated with a second water discharge pipe 26.
The first pneumatic fan 10 is located on one side of the air compressor radiator 5.
The second pneumatic fan 11 is positioned at one side of the heat pump high-temperature heating condenser 8.
The four corners of the bottom of the material trolley 3 are fixedly connected with supporting rollers.
In conclusion, the efficient dehydration energy-saving environment-friendly dryer is characterized in that materials are placed on a shelf and placed in a material vehicle 3 after being coiled, the whole vehicle is pushed into a drying room material chamber 1 to be dried in a totally-enclosed heat-insulated space environment, high-humidity air is sucked from a high-humidity air collecting port 12 after the air compressor 4 is started, high-pressure, high-temperature and high-humidity air is generated after being compressed by the air compressor 4 and then is sent into an air compressor radiator 5 for heat exchange through an air outlet pipe 13, the high-pressure and high-humidity air after being converted is sent into a high-pressure dehydrator 6 through a high-pressure air inlet pipe 14 for freeze dehydration, the dry high-pressure air obtained after air-water separation through a labyrinth air-water separator 20 drives a first pneumatic fan 10 and a second pneumatic fan 11, airflow of the drying room starts to circulate, exhaust of pneumatic air supply cools the nose of a heat pump compressor 7 in a shape, and the, the temperature of the drying room is higher, simultaneously the heat pump compressor 7 is started simultaneously, heat energy is generated in the heat pump high-temperature heating condenser 8, the drying room is heated under the action of a pneumatic blower, the converted refrigerant enters a coil pipe of the high-pressure dehydrator 6 through an expansion valve 23 for refrigeration and primary dehydration, then enters the low-temperature dehydration evaporator 9 for secondary dehydration and conversion, and then returns to the heat pump compressor 7 to complete the cycle of primary conversion and dehydration, the air compressor 4 and the heat pump compressor 7 simultaneously supply heat, the refrigerant is sent out from one side of the machine room 2, the compressed air provides kinetic energy to drive the blower to circularly ventilate the airflow of the drying room, the material is heated and dehydrated, the moisture in the material room is reasonably utilized by matching with the heat energy, the moisture in the material room is dehydrated for two times by combining scientific dew point control, and the dehydrated compressed air drives the first pneumatic blower 10 and the second pneumatic blower 11 to circularly, when having reduced the energy consumption of electric fan for the tradition, can also carry out effective heat dissipation for heat pump compressor 7's aircraft nose department for the temperature of baking house is higher, makes the equipment operation more stable, and life is longer.
It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides an energy-concerving and environment-protective drying-machine of high-efficient dehydration, includes baking house material room (1) and computer lab (2), its characterized in that: a plurality of material vehicles (3) arranged side by side are arranged in the drying room material chamber (1), and an air compressor (4), an air compressor radiator (5), a high-pressure dehydrator (6), a heat pump compressor (7), a heat pump high-temperature heating condenser (8), a low-temperature dehydration evaporator (9), a first pneumatic fan (10) and a second pneumatic fan (11) are arranged in the machine room (2);
the air inlet of the air compressor (4) is communicated with a high-humidity air collecting port (12), the air compressor (4) is communicated with an air compressor radiator (5) through an air outlet pipe (13), the air compressor radiator (5) is communicated with the high-pressure dehydrator (6) through a high-pressure air inlet pipe (14), the output end of the high-pressure dehydrator (6) is communicated with the input ends of the first pneumatic fan (10) and the second pneumatic fan (11) through a dry air high-pressure air outlet pipe (15), and the exhaust port of the dry air high-pressure air outlet pipe (15) is communicated with the heat pump compressor (7);
the heat pump high-temperature heating condenser is characterized in that the heat pump compressor (7) is fixedly communicated with the heat pump high-temperature heating condenser (8) through a first communicating pipe (16), the heat pump high-temperature heating condenser (8) is communicated with the high-pressure dehydrator (6) through a second communicating pipe (17), the high-pressure dehydrator (6) is communicated with the low-temperature dehydration evaporator (9) through a third communicating pipe (18), and the low-temperature dehydration evaporator (9) is fixedly communicated with the heat pump compressor (7) through a fourth communicating pipe (19).
2. The efficient dewatering energy-saving environment-friendly dryer as claimed in claim 1, wherein: a labyrinth type gas-water separator (20) is arranged in the high-pressure dehydrator (6), and one end of the dry air high-pressure air outlet pipe (15) is communicated with the labyrinth type gas-water separator (20).
3. The efficient dewatering energy-saving environment-friendly dryer as claimed in claim 1, wherein: an oil-liquid separator (21) is arranged on the first communicating pipe (16), and the oil-liquid separator (21) is fixedly communicated with the fourth communicating pipe (19) through a fifth communicating pipe (22).
4. The efficient dewatering energy-saving environment-friendly dryer as claimed in claim 1, wherein: an expansion valve (23) is arranged on the second communicating pipe (17).
5. The efficient dewatering energy-saving environment-friendly dryer as claimed in claim 1, wherein: the lower end of the high-pressure dehydrator (6) is fixedly communicated with a first drainage pipe (24), and a drainage control valve (25) is arranged on the first drainage pipe (24).
6. The efficient dewatering energy-saving environment-friendly dryer as claimed in claim 1, wherein: the lower end of the low-temperature dehydration evaporator (9) is fixedly communicated with a second water drainage pipe (26).
7. The efficient dewatering energy-saving environment-friendly dryer as claimed in claim 1, wherein: the first pneumatic fan (10) is located on one side of the air compressor radiator (5).
8. The efficient dewatering energy-saving environment-friendly dryer as claimed in claim 1, wherein: and the second pneumatic fan (11) is positioned at one side of the heat pump high-temperature heating condenser (8).
9. The efficient dewatering energy-saving environment-friendly dryer as claimed in claim 1, wherein: and supporting rollers are fixedly connected to the four corners of the bottom of the material trolley (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011365596.7A CN112414031A (en) | 2020-11-28 | 2020-11-28 | Efficient dehydration energy-saving environment-friendly dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011365596.7A CN112414031A (en) | 2020-11-28 | 2020-11-28 | Efficient dehydration energy-saving environment-friendly dryer |
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| Publication Number | Publication Date |
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| CN112414031A true CN112414031A (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011365596.7A Pending CN112414031A (en) | 2020-11-28 | 2020-11-28 | Efficient dehydration energy-saving environment-friendly dryer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115854671A (en) * | 2022-12-26 | 2023-03-28 | 林涛 | Air drying system with cold and hot recovery function |
| CN116045626A (en) * | 2022-12-27 | 2023-05-02 | 安徽欧瑞达电器科技有限公司 | Directly-heated air source heat pump dryer |
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| CN202485379U (en) * | 2012-03-23 | 2012-10-10 | 陕西科林能源发展股份有限公司 | High-temperature heat pump drying system |
| CN103557685A (en) * | 2013-11-20 | 2014-02-05 | 四川双亿实业有限公司 | Drying dehumidification and oil-water separation all-in-one machine adopting air source heat pump |
| CN105817123A (en) * | 2016-04-18 | 2016-08-03 | 东南大学 | Compressed air deep-drying device and method capable of adjusting pressure dew point |
| CN206146125U (en) * | 2016-09-20 | 2017-05-03 | 广东五星太阳能股份有限公司 | A Heat Pump Drying System Suitable for Humid Environment |
| CN108444276A (en) * | 2018-03-07 | 2018-08-24 | 龚政浩 | Air compression throttling drying machine |
| CN108759441A (en) * | 2018-04-18 | 2018-11-06 | 浙江理工大学 | Drying device and method |
| CN210267956U (en) * | 2019-08-02 | 2020-04-07 | 临沂市农业科学院 | Honeysuckle cell sap collection device |
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2020
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202485379U (en) * | 2012-03-23 | 2012-10-10 | 陕西科林能源发展股份有限公司 | High-temperature heat pump drying system |
| CN103557685A (en) * | 2013-11-20 | 2014-02-05 | 四川双亿实业有限公司 | Drying dehumidification and oil-water separation all-in-one machine adopting air source heat pump |
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| CN206146125U (en) * | 2016-09-20 | 2017-05-03 | 广东五星太阳能股份有限公司 | A Heat Pump Drying System Suitable for Humid Environment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115854671A (en) * | 2022-12-26 | 2023-03-28 | 林涛 | Air drying system with cold and hot recovery function |
| CN116045626A (en) * | 2022-12-27 | 2023-05-02 | 安徽欧瑞达电器科技有限公司 | Directly-heated air source heat pump dryer |
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| CB03 | Change of inventor or designer information |
Inventor after: Zhu Wenqing Inventor after: Wen Jiefeng Inventor before: Li Wenqing |
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Application publication date: 20210226 |
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