CN110763005A - Heat pump type double-fluid dehumidification and temperature rise dryer and drying chamber - Google Patents
Heat pump type double-fluid dehumidification and temperature rise dryer and drying chamber Download PDFInfo
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- CN110763005A CN110763005A CN201911141815.0A CN201911141815A CN110763005A CN 110763005 A CN110763005 A CN 110763005A CN 201911141815 A CN201911141815 A CN 201911141815A CN 110763005 A CN110763005 A CN 110763005A
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- 238000001035 drying Methods 0.000 title claims abstract description 100
- 239000012530 fluid Substances 0.000 title claims abstract description 37
- 238000007791 dehumidification Methods 0.000 title claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 104
- 238000005057 refrigeration Methods 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims description 19
- 238000001704 evaporation Methods 0.000 claims description 19
- 230000008020 evaporation Effects 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 14
- 238000010257 thawing Methods 0.000 claims description 13
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 5
- 239000003507 refrigerant Substances 0.000 description 11
- 239000000463 material Substances 0.000 description 8
- 238000010792 warming Methods 0.000 description 5
- 241000208125 Nicotiana Species 0.000 description 3
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 3
- 244000269722 Thea sinensis Species 0.000 description 3
- 238000011217 control strategy Methods 0.000 description 3
- 235000013399 edible fruits Nutrition 0.000 description 3
- 235000014102 seafood Nutrition 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- 238000000819 phase cycle Methods 0.000 description 2
- 235000013339 cereals Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
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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
- 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
- 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
-
- 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
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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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
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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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/14—Collecting or removing condensed and defrost water; Drip trays
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a heat pump type double-fluid dehumidification and temperature rise dryer and a drying chamber, wherein the dryer comprises a heat pump unit body with a refrigeration working medium loop, a control unit, a fan and a hot water pump, the refrigeration working medium loop comprises an air-cooled evaporator, a water-cooled condenser, a throttle valve and a compressor which are connected in series, the heat pump unit body is also provided with a humid air inlet, a dry air outlet, a hot water return port and a hot water outlet, the humid air inlet, the fan, an air-cooled channel of the air-cooled evaporator and the dry air outlet are communicated, the hot water return port, the hot water pump, a water-cooled channel of the water-cooled condenser and the hot water outlet are communicated, and the drying chamber comprises the dryer. The invention has the advantages of low drying energy consumption, low use cost, high temperature regulation precision and low dehumidification energy consumption, can meet the drying requirements of different dried objects on temperature, and has good energy-saving and emission-reducing effects and wide market application and popularization prospects.
Description
Technical Field
The invention relates to heat pump type drying equipment, in particular to a heat pump type two-fluid dehumidifying and heating dryer and a drying chamber with the characteristics of dehumidifying drying and heating drying.
Background
At present, aiming at scenes of drying wood, tobacco leaves, tea leaves, grains, woods and fruits, seafood products and the like, all adopted dryers are heating type convection dryers, and moisture of dried objects is removed through heating and forced convection, so that the drying purpose is achieved. However, the conventional heating type dryer has the following problems: the drying heat loss is high, the heating power consumption is high, and the humidity and temperature adjusting capability is weak, so that the drying requirements of different dried objects are difficult to achieve.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: aiming at the problems in the prior art, the invention provides a heat pump type two-fluid dehumidification and warming dryer and a drying chamber, the heat pump type two-fluid dehumidification and warming dryer has the characteristics of dehumidification drying and warming drying, has the independent humidity and temperature regulation capability, can realize continuous dehumidification, has small drying energy consumption, low use cost, high temperature regulation precision and low dehumidification energy consumption, greatly improves the drying efficiency, can realize automatic dehumidification of the drying chamber according to the moisture content change of a drying material, can meet the drying requirements of different dried objects on temperature, can be applied to scenes of drying heat-sensitive materials such as wood, tobacco leaves, tea leaves, grains, fruits, seafood products and the like, and has good energy-saving and emission-reducing effects and wide market application and popularization prospects.
In order to solve the technical problems, the invention adopts the technical scheme that:
the invention provides a heat pump type double-fluid dehumidification and temperature rise dryer, which comprises a heat pump unit body with a refrigeration working medium loop, a control unit, a fan and a hot water pump, wherein the refrigeration working medium loop comprises an air-cooled evaporator, a water-cooled condenser, a throttle valve and a compressor which are connected in series, the control end of the throttle valve is connected with the control unit, the heat pump unit body is also provided with a humid air inlet, a dry air outlet, a hot water return port and a hot water outlet, the humid air inlet is communicated with an air-cooled channel inlet of the fan and the air-cooled evaporator, the dry air outlet is communicated with an air-cooled channel outlet of the air-cooled evaporator, the hot water return port is communicated with a water-cooled channel inlet of the water-cooled condenser through the hot water pump, the hot water outlet is communicated with a water-cooled, The control ends of the compressor, the fan and the hot water pump are respectively connected with the control unit.
Optionally, an auxiliary air inlet is connected in parallel between the humid air inlet and the air-cooled channel inlet of the air-cooled evaporator.
Optionally, an auxiliary air outlet is connected in parallel between the dry air outlet and the air-cooled channel outlet of the air-cooled evaporator.
Optionally, the bottom of the air-cooled evaporator is further provided with a water collecting tray, the heat pump unit body is further provided with an expansion water tank, the water collecting tray is connected with a water inlet of the expansion water tank, and a water outlet of the expansion water tank is connected in parallel between a hot water backflow port and a water cooling channel inlet of the water-cooled condenser or between a hot water output port and a water cooling channel outlet of the water-cooled condenser.
Optionally, the air-cooled evaporator is further provided with a defrosting pipe and an evaporation temperature sensor, the defrosting pipe and the evaporation temperature sensor are respectively connected with the control unit, and the control unit controls the working state of the defrosting pipe according to the evaporation temperature detected by the evaporation temperature sensor.
Optionally, the air-cooled channel inlet of the air-cooled evaporator is further provided with an air inlet humidity sensor, the air inlet humidity sensor is connected with the control unit, and the control unit controls the opening of the throttle valve according to the evaporation humidity detected by the air inlet humidity sensor.
Optionally, a front end temperature sensor and a front end pressure sensor are arranged on the upper stream of the compressor on the refrigeration working medium loop, a rear end temperature sensor and a rear end pressure sensor are arranged on the lower stream of the compressor, the front end temperature sensor, the front end pressure sensor, the rear end temperature sensor and the rear end pressure sensor are respectively connected with the control unit, and the control unit controls the working state of the compressor according to the temperature difference between the front end temperature sensor and the rear end temperature sensor and the pressure difference between the front end pressure sensor and the rear end pressure sensor.
Optionally, a filter is arranged at the humid air inlet, and a non-resistance filter is arranged at the hot water return port.
Optionally, the control unit is further connected with a drying chamber humidity sensor, and the control unit controls the rotating speed of the fan according to the drying chamber humidity detected by the drying chamber humidity sensor.
Optionally, the control unit is further connected with a drying chamber temperature sensor, the hot water pump is further connected with a frequency converter, a control end of the frequency converter is connected with the control unit, and the control unit controls the frequency of the frequency converter according to the drying chamber temperature detected by the drying chamber temperature sensor.
The invention provides a drying chamber which comprises a drying chamber body with a heat exchange tube and the heat pump type two-fluid dehumidification and temperature rise dryer, wherein the connecting end of the heat exchange tube is respectively communicated with a hot water return port and a hot water output port of the heat pump type two-fluid dehumidification and temperature rise dryer, the drying chamber body is also provided with an air inlet and an air outlet, the air inlet is communicated with a dry air outlet of the heat pump type two-fluid dehumidification and temperature rise dryer, and the air outlet is communicated with a humid air inlet of the heat pump type two-fluid dehumidification and temperature rise dryer.
Compared with the prior art, the invention has the following advantages:
1. the heat pump unit body of the invention is provided with an air-cooled evaporator, a water-cooled condenser, a moist air inlet, a dry air outlet, a hot water return port and a hot water outlet, wherein the moist air inlet is communicated with an air-cooled channel inlet of the air-cooled evaporator through a fan, the dry air outlet is communicated with an air-cooled channel outlet of the air-cooled evaporator, the hot water return port is communicated with a water-cooled channel inlet of the water-cooled condenser through a hot water pump, the hot water outlet is communicated with a water-cooled channel outlet of the water-cooled condenser, control ends of a throttle valve, a compressor, a fan and the hot water pump are respectively connected with a control unit, a drying system for heating and drying hot water at the hot end of the heat pump and efficiently utilizing heat of dehumidification and drying at the cold end of the heat pump is formed, a double-fluid, thereby enabling miniaturization of the drying apparatus and the drying chamber.
2. The double-fluid (air and water) integrated dryer formed by the air-cooled evaporator and the water-cooled condenser has the independent temperature and humidity control function, so that the loss caused by heat and humidity combined treatment in a conventional heat pump system is avoided. Temperature control: the temperature of the secondary refrigerant in the water-cooling condenser rises after absorbing the heat of the refrigerant, the heated water enters the drying chamber to control the temperature of the drying chamber, and the materials and air in the drying chamber can be heated by adjusting the performance of the hot water pump, so that the temperature is controlled, and the temperature in the drying chamber reaches the set requirement; humidity control: the air-cooled evaporator condenses the moisture-removed air in the drying chamber, reduces the moisture content of the moisture-removed air, and then enters the drying chamber, changes the opening degree of the throttle valve, and controls the flow of the refrigerant, thereby changing the evaporation temperature, and further enabling the air humidity to meet the requirement of entering the drying chamber.
3. The temperature difference of the double-fluid heat carrier hot water in the drying chamber is set, and the circulation volume of the wet air entering the system after the heat carrier air is dehumidified is increased, so that higher evaporation temperature is obtained, the energy consumption required by the condensation of high-pressure steam of a refrigerant in a condenser can be greatly reduced, the energy efficiency ratio is improved, the higher temperature difference of condensed water can be achieved without depending on the high pressure ratio of a compressor, the conditions of high-pressure alarm of the condenser of a heat pump, compressor protection shutdown, low-temperature frosting of an evaporator and compressor shutdown defrosting are almost completely eliminated, and the overall operation efficiency of the system is greatly improved.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Illustration of the drawings: 1. an air-cooled evaporator; 11. a humid air inlet; 12. a dry air outlet; 13. an auxiliary air inlet is also connected in parallel between the inlets of the air cooling channels; 14. an auxiliary air outlet is also connected in parallel between the outlets of the air cooling channels; 15. a water collection tray; 16. a defrosting pipe; 17. an evaporation temperature sensor; 18. an intake air humidity sensor; 2. a water-cooled condenser; 21. a hot water return port; 22. a hot water outlet; 3. a throttle valve; 4. a compressor; 41. a front end temperature sensor; 42. a front end pressure sensor; 43. a rear end temperature sensor; 44. a rear end pressure sensor; 5. a control unit; 51. a drying chamber humidity sensor; 52. a drying chamber temperature sensor; 6. a fan; 7. a hot water pump; 8. an expansion tank; 9. a drying chamber body; 91. a heat exchange pipe; 92. an air inlet; 93. and (7) air outlet.
Detailed Description
As shown in fig. 1, the heat pump type two-fluid dehumidifying and heating dryer of the present embodiment includes a heat pump unit body having a refrigeration working medium loop and a control unit 5, a fan 6, and a hot water pump 7, the refrigeration working medium loop includes an air-cooled evaporator 1, a water-cooled condenser 2, a throttle valve 3, and a compressor 4 connected in series, a control end of the throttle valve 3 is connected to the control unit 5, the heat pump unit body is further provided with a humid air inlet 11, a dry air outlet 12, a hot water return port 21, and a hot water outlet 22, the humid air inlet 11 is communicated with an air-cooled channel inlet of the air-cooled evaporator 1 through the fan 6, the dry air outlet 12 is communicated with an air-cooled channel outlet of the air-cooled evaporator 1, the hot water return port 21 is communicated with a water-cooled channel inlet of the water-cooled condenser 2 through the hot water pump 7, the hot water, the control ends of the throttle valve 3, the compressor 4, the fan 6 and the hot water pump 7 are respectively connected with the control unit 5. The heat pump type two-fluid dehumidification and temperature rise dryer of the embodiment forms a drying system which is used efficiently for heating and drying heat from the hot end of the heat pump and dehumidifying and drying heat from the cold end of the heat pump, and forms a two-fluid (air and water) secondary refrigerant integrated drying chamber structure, so that the structure is compact, the occupied space is small, and the miniaturization of drying equipment and a drying chamber can be realized. Wherein, the refrigeration working medium of the refrigeration working medium loop can adopt R22, R134a or R133 type refrigeration working medium according to the requirement; the heat carrying agent of the water cooling channel of the water cooling type condenser 2 can adopt humid air or water. The two-fluid (air and water) integrated dryer formed by the heat pump type two-fluid dehumidification and temperature rise dryer has an independent temperature and humidity control function, so that loss caused by heat and humidity combined treatment in a conventional heat pump system is avoided. Temperature control: the water temperature of the secondary refrigerant in the water-cooling condenser 2 rises after absorbing the heat of the refrigerant, the heated water enters the drying chamber to control the temperature of the drying chamber, and the materials and air in the drying chamber can be heated by adjusting the performance of the hot water pump 7, so that the temperature is controlled, and the temperature in the drying chamber reaches the set requirement; humidity control: the air-cooled evaporator 1 condenses the dehumidified air in the drying chamber, reduces the moisture content of the dehumidified air, and then enters the drying chamber, changes the opening degree of the throttle valve 3, and controls the flow of the refrigerant, thereby changing the evaporation temperature, and enabling the air humidity to meet the requirement of entering the drying chamber.
As shown in fig. 1, a filter is arranged at the humid air inlet 11, and a non-resistance filter is arranged at the hot water return port 21, so that the air-cooled channel of the air-cooled evaporator 1 and the water-cooled channel of the water-cooled condenser 2 can be ensured to have no foreign matters entering, and the performance and the service life of the air-cooled evaporator 1 and the water-cooled condenser 2 can be ensured.
As shown in fig. 1, an auxiliary air inlet 13 is further connected in parallel between the humid air inlet 11 and the air-cooled channel inlet of the air-cooled evaporator 1, and the auxiliary air inlet 13 is used to form a semi-open type circulation structure between the humid air inlet 11 and the air-cooled channel inlet of the air-cooled evaporator 1, so that the evaporator is ensured to have enough heat to completely vaporize the refrigerant, and the purposes of ensuring heat balance and improving heat transfer efficiency can be achieved.
As shown in fig. 1, an auxiliary air outlet 14 is further connected in parallel between the dry air outlet 12 and the air-cooled channel outlet of the air-cooled evaporator 1, and the auxiliary air outlet 14 is used to form a semi-open type circulation structure between the dry air outlet 12 and the air-cooled channel outlet of the air-cooled evaporator 1, so that the temperature of the dryer is easily raised, the air entering the drying chamber is easily saturated, and the purposes of ensuring heat balance and improving heat transfer efficiency can be achieved.
As shown in fig. 1, the bottom of the air-cooled evaporator 1 is further provided with a water collecting tray 15, an expansion water tank 8 is further arranged in the heat pump unit body, the water collecting tray 15 is connected with a water inlet of the expansion water tank 8, a water outlet of the expansion water tank 8 is connected in parallel between a hot water return port 21 and a water-cooling channel inlet of the water-cooled condenser 2 or between a hot water outlet 22 and a water-cooling channel outlet of the water-cooled condenser 2, and through the structure, make-up water of a heat carrier of the water-cooling channel of the water-cooled condenser 2 can be supplemented by the dried humid air condensate water.
As shown in fig. 1, the air-cooled evaporator 1 further has a defrosting pipe 16 and an evaporation temperature sensor 17, the defrosting pipe 16 and the evaporation temperature sensor 17 are respectively connected to the control unit 5, as shown by an arrow a in fig. 1, the control unit 5 controls the working state of the defrosting pipe 16 according to the evaporation temperature detected by the evaporation temperature sensor 17, so as to prevent the air-cooled evaporator 1 from being supercooled and frosted, ensure that the air-cooled evaporator 1 is usable in a cold region or season, and specifically, the control mode can be set to be below a set temperature to open the defrosting pipe 16 for defrosting.
As shown in fig. 1, the inlet of the air-cooled channel of the air-cooled evaporator 1 is further provided with an inlet air humidity sensor 18, the inlet air humidity sensor 18 is connected with the control unit 5, as shown by an arrow c in fig. 1, the control unit 5 controls the opening of the throttle valve 3 according to the evaporation humidity detected by the inlet air humidity sensor 18, and the control of the opening of the throttle valve 3 is aimed at controlling the humidity (humidity of the drying chamber) of the air-cooled channel of the air-cooled evaporator 1 to realize independent control of the humidity, and the specific control mode can be realized by adopting a PID control strategy.
In this embodiment, an under-voltage protection device, an over-current protection device, a temperature protection device and a phase sequence protection device are arranged in the compressor body of the compressor 4, and the compressor 4 is automatically stopped when the under-voltage protection device, the over-current protection device, the temperature protection device and the phase sequence protection device are in error, so that the compressor 4 can be effectively protected.
As shown in fig. 1, a front end temperature sensor 41 and a front end pressure sensor 42 are arranged on the refrigerant circuit upstream of the compressor 4, a rear end temperature sensor 43 and a rear end pressure sensor 44 are arranged on the refrigerant circuit downstream of the compressor 4, the front end temperature sensor 41, the front end pressure sensor 42, the rear end temperature sensor 43 and the rear end pressure sensor 44 are respectively connected with the control unit 5, as shown by an arrow d in fig. 1, the control unit 5 controls the operating state of the compressor 4 according to the temperature difference between the front end temperature sensor 41 and the rear end temperature sensor 43 and the pressure difference between the front end pressure sensor 42 and the rear end pressure sensor 44, the operating state of the compressor 4 is aimed at saving energy consumption based on the start and stop of the compressor, and in this embodiment, specifically, if the temperature difference or the pressure difference is smaller than a set value, the compressor 4 is controlled to stop to save energy consumption.
As shown in fig. 1, the control unit 5 is further connected to a drying chamber humidity sensor 51, as shown by an arrow b in fig. 1, the control unit 5 controls the rotation speed of the fan 6 according to the drying chamber humidity detected by the drying chamber humidity sensor 51, the rotation speed of the fan 6 is used for assisting in controlling the humidity of the drying chamber, and a specific control manner can be implemented by adopting a PID control strategy.
As shown in fig. 1, the control unit 5 is further connected to a drying chamber temperature sensor 52, the hot water pump 7 is further connected to a frequency converter 71, a control end of the frequency converter 71 is connected to the control unit 5, and as shown by an arrow e in fig. 1, the control unit 5 controls a frequency of the frequency converter 71 according to the drying chamber temperature detected by the drying chamber temperature sensor 52. The frequency control of the frequency converter 71 aims at realizing the temperature control of the drying chamber and realizing the independent temperature control, and a specific control mode can be realized by adopting a PID control strategy. It should be noted that the drying chamber humidity sensor 51 and the drying chamber temperature sensor 52 may be of a split structure, or may be of an integrated temperature and humidity sensor as needed.
As shown in fig. 1, the drying chamber of this embodiment includes a drying chamber body 9 with a heat exchange tube 91 and the aforementioned heat pump type two-fluid dehumidifying and heating dryer, the connection end of the heat exchange tube 91 is respectively communicated with a hot water return port 21 and a hot water output port 22 of the heat pump type two-fluid dehumidifying and heating dryer, the drying chamber body 9 is further provided with an air inlet 92 and an air outlet 93, the air inlet 92 is communicated with a dry air outlet 12 of the heat pump type two-fluid dehumidifying and heating dryer, and the air outlet 93 is communicated with a humid air inlet 11 of the heat pump type two-fluid dehumidifying and heating dryer. Wherein, the heat exchange tube 91, the hot water return port 21, the hot water outlet 22, the hot water pump 7 and the water cooling channel of the water-cooled condenser 2 form a closed circulation channel of the heat carrier, which is used for realizing the transfer of heat between the water cooling channel of the water-cooled condenser 2 and the drying chamber body 9. The heat exchange tube 91 may be a light tube, a ribbed tube, or a finned tube as required. In addition, the drying chamber body 9 can be used for placing a material placing frame, so that the dried objects can be conveniently placed, and the drying effect of the dried objects is better. It should be noted that the air inlet 92 and the air outlet 93 should be generally disposed at a longer distance to achieve the best air circulation effect inside the drying chamber body 9. To sum up, the heat pump type two-fluid dehumidification and warming dryer and the drying chamber have the characteristics of dehumidification drying and warming drying, have independent humidity and temperature regulation capabilities, can realize continuous dehumidification, are small in drying energy consumption, low in use cost, high in temperature regulation precision, low in dehumidification energy consumption, greatly improve drying efficiency, can realize automatic dehumidification of the drying chamber according to the moisture change of drying materials, can meet the drying requirements of different dried materials on temperature, can be applied to scenes of drying of thermosensitive materials such as wood, tobacco leaves, tea leaves, grains, fruits of forest, seafood products and the like, and have good energy-saving and emission-reducing effects and wide market application and popularization prospects.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (10)
1. A heat pump type two-fluid dehumidification and temperature rise dryer is characterized by comprising a heat pump unit body with a refrigeration working medium loop and a control unit (5), a fan (6) and a hot water pump (7), wherein the refrigeration working medium loop comprises an air-cooled evaporator (1), a water-cooled condenser (2), a throttle valve (3) and a compressor (4) which are connected in series, the control end of the throttle valve (3) is connected with the control unit (5), the heat pump unit body is further provided with a humid air inlet (11), a dry air outlet (12), a hot water backflow port (21) and a hot water outlet (22), the humid air inlet (11) is communicated with an air-cooled channel inlet of the air-cooled evaporator (1) through the fan (6), the dry air outlet (12) is communicated with an air-cooled channel outlet of the air-cooled evaporator (1), the hot water return port (21) is communicated with a water cooling channel inlet of the water cooling type condenser (2) through a hot water pump (7), a hot water outlet (22) is communicated with a water cooling channel outlet of the water cooling type condenser (2), and control ends of the throttle valve (3), the compressor (4), the fan (6) and the hot water pump (7) are respectively connected with the control unit (5).
2. A heat pump type two-fluid dehumidification warm-up dryer according to claim 1, characterized in that an auxiliary air intake (13) is further connected in parallel between said humid air intake (11) and the air-cooled channel inlet of the air-cooled evaporator (1).
3. A heat pump type two-fluid dehumidifying and heating dryer according to claim 2, wherein an auxiliary air outlet (14) is further connected in parallel between said drying air outlet (12) and the air-cooled channel outlet of the air-cooled evaporator (1).
4. A heat pump type two-fluid dehumidification and temperature rise dryer according to claim 1, wherein a water collection tray (15) is further provided at the bottom of the air-cooled evaporator (1), an expansion water tank (8) is further provided in the heat pump unit body, the water collection tray (15) is connected to a water inlet of the expansion water tank (8), and a water outlet of the expansion water tank (8) is connected in parallel between a hot water return port (21) and a water cooling channel inlet of the water-cooled condenser (2) or between a hot water outlet (22) and a water cooling channel outlet of the water-cooled condenser (2).
5. A heat pump type two-fluid dehumidification warm-up dryer according to claim 1, wherein said air-cooled evaporator (1) further comprises a defrosting pipe (16) and an evaporation temperature sensor (17), said defrosting pipe (16) and said evaporation temperature sensor (17) being respectively connected to a control unit (5), said control unit (5) controlling an operation state of said defrosting pipe (16) according to an evaporation temperature detected by said evaporation temperature sensor (17).
6. A heat pump type two-fluid dehumidification warm-up dryer according to claim 1, wherein said air-cooled channel inlet of said air-cooled evaporator (1) is further provided with an inlet air humidity sensor (18), said inlet air humidity sensor (18) being connected to a control unit (5), said control unit (5) controlling the opening degree of the throttle valve (3) according to the evaporation humidity detected by said inlet air humidity sensor (18).
7. A heat pump type two-fluid dehumidification and temperature rise dryer according to claim 1, wherein a front end temperature sensor (41) and a front end pressure sensor (42) are arranged on the upstream of the compressor (4) in the refrigeration working medium circuit, a rear end temperature sensor (43) and a rear end pressure sensor (44) are arranged on the downstream of the compressor (4), the front end temperature sensor (41), the front end pressure sensor (42), the rear end temperature sensor (43) and the rear end pressure sensor (44) are respectively connected with the control unit (5), and the control unit (5) controls the working state of the compressor (4) according to the temperature difference between the front end temperature sensor (41) and the rear end temperature sensor (43) and the pressure difference between the front end pressure sensor (42) and the rear end pressure sensor (44).
8. A heat pump type two-fluid dehumidification warm-up dryer according to claim 1, wherein a drying chamber humidity sensor (51) is further connected to said control unit (5), said control unit (5) controlling the rotation speed of said fan (6) according to the drying chamber humidity detected by said drying chamber humidity sensor (51).
9. A heat pump type two-fluid dehumidification temperature-rising dryer according to claim 1, wherein a drying chamber temperature sensor (52) is further connected to said control unit (5), a frequency converter (71) is further connected to said hot water pump (7), a control end of said frequency converter (71) is connected to said control unit (5), and said control unit (5) controls a frequency of said frequency converter (71) according to a drying chamber temperature detected by said drying chamber temperature sensor (52).
10. The drying chamber is characterized by comprising a drying chamber body (9) with a heat exchange tube (91) and the heat pump type two-fluid dehumidification and temperature rise dryer as claimed in any one of claims 1 to 9, wherein the connecting end of the heat exchange tube (91) is respectively communicated with a hot water return opening (21) and a hot water outlet (22) of the heat pump type two-fluid dehumidification and temperature rise dryer, an air inlet (92) and an air outlet (93) are further arranged on the drying chamber body (9), the air inlet (92) is communicated with a drying air outlet (12) of the heat pump type two-fluid dehumidification and temperature rise dryer, and the air outlet (93) is communicated with a humid air inlet (11) of the heat pump type two-fluid dehumidification and temperature rise dryer.
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| CN201911141815.0A CN110763005B (en) | 2019-11-20 | 2019-11-20 | Heat pump type double-fluid dehumidification heating dryer and drying chamber |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113124648A (en) * | 2021-04-12 | 2021-07-16 | 北京航空航天大学 | Drying system and method |
| CN113639341A (en) * | 2021-07-13 | 2021-11-12 | 清华大学 | Dehumidification hot water unit based on three medium heat exchangers |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030088106A (en) * | 2003-10-31 | 2003-11-17 | 핀튜브텍(주) | Drying machine using heat pump system |
| CN202002440U (en) * | 2011-02-22 | 2011-10-05 | 成都东和工业有限责任公司 | Hot-water heating and baking device for condensing and dehumidifying |
| CN203011097U (en) * | 2012-09-04 | 2013-06-19 | 广东芬尼克兹节能设备有限公司 | A heat pump dehumidification drying device |
| CN103453759A (en) * | 2013-08-22 | 2013-12-18 | 南京翠波新能源发展有限公司 | Air source heat pump water circulation heat exchange drying system |
| CN103712477A (en) * | 2013-12-18 | 2014-04-09 | 清华大学 | Heat-supplying and demisting water-saving type cooling tower for heat pump |
| CN211147259U (en) * | 2019-11-20 | 2020-07-31 | 中南林业科技大学 | Heat pump type double-fluid dehumidification and temperature rise dryer and drying chamber |
-
2019
- 2019-11-20 CN CN201911141815.0A patent/CN110763005B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030088106A (en) * | 2003-10-31 | 2003-11-17 | 핀튜브텍(주) | Drying machine using heat pump system |
| CN202002440U (en) * | 2011-02-22 | 2011-10-05 | 成都东和工业有限责任公司 | Hot-water heating and baking device for condensing and dehumidifying |
| CN203011097U (en) * | 2012-09-04 | 2013-06-19 | 广东芬尼克兹节能设备有限公司 | A heat pump dehumidification drying device |
| CN103453759A (en) * | 2013-08-22 | 2013-12-18 | 南京翠波新能源发展有限公司 | Air source heat pump water circulation heat exchange drying system |
| CN103712477A (en) * | 2013-12-18 | 2014-04-09 | 清华大学 | Heat-supplying and demisting water-saving type cooling tower for heat pump |
| CN211147259U (en) * | 2019-11-20 | 2020-07-31 | 中南林业科技大学 | Heat pump type double-fluid dehumidification and temperature rise dryer and drying chamber |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113124648A (en) * | 2021-04-12 | 2021-07-16 | 北京航空航天大学 | Drying system and method |
| CN113639341A (en) * | 2021-07-13 | 2021-11-12 | 清华大学 | Dehumidification hot water unit based on three medium heat exchangers |
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| CN110763005B (en) | 2024-02-09 |
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