CN112032815A - Hot air type temperature-increasing constant temperature and humidity system - Google Patents
Hot air type temperature-increasing constant temperature and humidity system Download PDFInfo
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- CN112032815A CN112032815A CN202010797004.2A CN202010797004A CN112032815A CN 112032815 A CN112032815 A CN 112032815A CN 202010797004 A CN202010797004 A CN 202010797004A CN 112032815 A CN112032815 A CN 112032815A
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- condenser
- evaporator
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- constant temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D15/00—Other domestic- or space-heating systems
- F24D15/04—Other domestic- or space-heating systems using heat pumps
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
- A01G9/246—Air-conditioning systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/02—Arrangement of mountings or supports for radiators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F3/1405—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification in which the humidity of the air is exclusively affected by contact with the evaporator of a closed-circuit cooling system or heat pump circuit
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
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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]
- Y02B30/13—Hot air central heating systems using heat pumps
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/14—Measures for saving energy, e.g. in green houses
Abstract
The utility model belongs to the technical field of the temperature and humidity control technique and specifically relates to a hot-blast formula constant temperature and humidity system that heats is related to, be used for adjusting the inside temperature in greenhouse and humidity, including the indoor set, the indoor set includes, the casing that has the air flow between the terminal surface down, inside one-level evaporimeter and the one-level condenser of having set gradually by bottom to top of casing, one-level evaporimeter and one-level condenser intercommunication have heat transfer working medium in same heat pump circuit and in the heat pump circuit, the below of one-level evaporimeter or the top of one-level condenser are provided with centrifugal fan, outdoor being provided with carries out the indoor off-premises station that heaies up, it dehumidifies to the greenhouse inside, make things convenient for the crop to carry out photosynthesis, guarantee the.
Description
Technical Field
The application relates to the technical field of temperature and humidity control, in particular to a hot air type temperature-increasing constant temperature and humidity system.
Background
At present, in order to meet the living needs of people, people often plant crops in a greenhouse, and the crops are planted when the outdoor temperature is low in winter.
In winter, the temperature outside the greenhouse is low, the crop growth inside the greenhouse needs high temperature, the greenhouse needs to be heated, the humidity of the air in the greenhouse is increased while the temperature is increased, in winter, in order to prevent outdoor cold air from entering the greenhouse, moisture cannot be discharged outdoors, the photosynthesis of the crop can be directly influenced by the fact that the humidity in the air is kept too high for a long time, and the development of the crop is finally influenced.
Disclosure of Invention
In order to dehumidify the inside of a greenhouse, bring convenience to photosynthesis of crops and guarantee the growth of the crops, the hot air type temperature-increasing constant-temperature and constant-humidity system is provided.
The application provides a hot-blast formula increases temperature constant temperature and humidity system adopts following technical scheme:
the utility model provides a hot-blast formula constant temperature and humidity system that heats for adjust inside temperature and humidity of greenhouse, including the indoor set, the indoor set includes that the casing that has the air flow between the up and down terminal surface, inside by having set gradually one-level evaporimeter and one-level condenser from bottom to top of casing, one-level evaporimeter and one-level condenser intercommunication have heat transfer working medium in same heat pump circuit and the heat pump circuit, the below of one-level evaporimeter or the top of one-level condenser are provided with centrifugal fan, outdoor being provided with carries out the indoor off-premises station that heaies up.
By adopting the technical scheme, when the interior of the greenhouse needs to be dehumidified, the centrifugal fan is started, the centrifugal fan can enable air in the greenhouse to enter the interior of the shell from the lower end face of the shell, then the air exchanges heat with the primary evaporator and the primary condenser in sequence, the primary evaporator and the primary condenser are communicated to the heat pump loop, the air in the greenhouse can exchange heat with a working medium in the primary evaporator when contacting the primary evaporator, and the temperature and the humidity of the air are both reduced; then, the air contacts the first-stage condenser and then exchanges heat with the working medium inside the first-stage condenser, the temperature of the air rises at the moment, and the humidity of the air is reduced after the air passes through the indoor unit, so that the effect of dehumidifying the air inside the greenhouse is achieved, and the photosynthesis of crops is promoted.
Preferably, a secondary condenser is arranged above the primary condenser, and the secondary condenser is connected in series in the heat pump loop and is arranged in parallel with the primary condenser.
Through adopting above-mentioned technical scheme, the air can carry out the heat transfer with the second grade condenser after the one-level condenser, and the air can carry out the secondary like this and heaies up, has promoted the temperature of air, just so makes the indoor set can accomplish the process of heating constant temperature and dehumidification simultaneously.
Preferably, a secondary evaporator is arranged between the primary condenser and the secondary condenser, and the secondary evaporator is connected in series in the heat pump loop and is arranged in parallel with the primary evaporator.
Through adopting above-mentioned technical scheme, the air can carry out the heat transfer with the second grade evaporimeter after the one-level condenser, before the second grade condenser, and the second grade evaporimeter can further dehumidify the air.
Preferably, the outdoor unit comprises an outdoor unit evaporator, the outdoor unit evaporator is connected in series with the primary condenser, and the heat pump circuit is provided with a switching piece for switching the primary condenser between the outdoor unit evaporator and the primary evaporator.
Through adopting above-mentioned technical scheme, when need not dehumidify the greenhouse inside, people can carry out the extrinsic cycle process with one-level condenser and outer quick-witted evaporimeter intercommunication through the converting part this moment, and inside outdoor air entered into the greenhouse after the heating, realized the inside homothermal process that heats of greenhouse.
Preferably, a four-way valve is arranged in a loop of the series connection of the outdoor unit evaporator and the primary condenser.
By adopting the technical scheme, people can make the outer machine evaporator be matched with the first-stage condenser to realize the processes of warming and refrigerating in the greenhouse by changing the flowing direction of the working medium in the four-way valve.
Preferably, a water tank is arranged at the lowest part of the machine shell.
Through adopting above-mentioned technical scheme, when one-level evaporimeter, second grade evaporimeter and gas carried out the heat transfer, air temperature reduces, can condense out the water pearl on the piece of eating of one-level evaporimeter, second grade evaporimeter, then fall inside the basin, can realize the process of collecting the vapor in the air like this.
Preferably, the fins in the primary evaporator, the primary condenser, the secondary evaporator and the secondary condenser are all obliquely arranged.
Through adopting above-mentioned technical scheme, can make things convenient for the gas in greenhouse and the fin inside first order evaporimeter, first order condenser, second grade evaporimeter and the second grade condenser to carry out the heat transfer.
Preferably, the top surface of the greenhouse is provided with glass.
Through adopting above-mentioned technical scheme, the glass of top surface can make things convenient for the daylighting in greenhouse, improves the inside temperature in greenhouse.
Preferably, an axial flow fan is arranged on the inner side surface of the greenhouse.
Through adopting above-mentioned technical scheme, to indoor intensification or the in-process that dehumidifies, start axial fan, axial fan can blow to the position that is close to greenhouse central authorities, can promote the inside air flow of greenhouse like this, keeps local dynamic balance.
Preferably, each indoor unit corresponds to two axial flow fans, and the two axial flow fans are respectively arranged on two sides of the indoor unit.
By adopting the technical scheme, when the indoor unit works, the temperature and humidity of the air around the indoor unit change fastest and change most obviously, and the axial flow fans are arranged on two sides of the indoor unit, so that the dynamic balance of the indoor air can be further promoted.
Drawings
FIG. 1 is a block diagram of a temperature-increasing, constant-temperature and constant-humidity system installed in a greenhouse and after hiding the top surface of the greenhouse in an embodiment of the present application;
FIG. 2 is a partial sectional view showing the structure of the indoor unit of the temperature-increasing, constant-temperature and constant-humidity system in the embodiment of the present application;
fig. 3 is a first state of a gas-liquid conversion heat pump schematic diagram of a temperature-increasing constant temperature and humidity system in an embodiment of the present application (in the figure, hollow arrows indicate the flow direction of air flow during dehumidification and temperature increase, and solid arrows indicate the flow direction of heat transfer medium during indoor temperature increase by an outdoor unit);
fig. 4 is a second state of the gas-liquid conversion heat pump schematic diagram of the temperature-increasing constant temperature and humidity system in the embodiment of the present application (in the figure, the hollow arrows indicate the flow direction of the air flow during dehumidification and temperature increase, and the solid arrows indicate the flow direction of the heat transfer medium during indoor temperature reduction by the outdoor unit).
In the figure, 1, greenhouse; 2. an indoor unit; 21. a housing; 22. a centrifugal fan; 23. a first-stage evaporator; 24. a first-stage condenser; 25. a secondary evaporator; 26. a secondary condenser; 27. a water tank; 3. an outdoor unit; 32. a three-way valve; 4. a heat pump circuit; 41. a compressor; 42. an expansion valve; 43. a filter; 44. a reservoir; 5. a four-way valve; 6. an axial flow fan.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
Referring to fig. 1, the present application provides a hot air type temperature-increasing constant temperature and humidity system, which includes an indoor unit 2 disposed inside a greenhouse 1 with a glass top surface and an outdoor unit 3 disposed outside the greenhouse 1, wherein each wall of the greenhouse 1 is provided with two sets of temperature-increasing constant temperature and humidity systems. When the indoor unit 2 is operated, the inside of the greenhouse 1 can be heated or kept at a constant temperature, the humidity of the air inside the greenhouse 1 can be reduced, and the outside unit 3 can be heated or kept at a constant temperature inside the greenhouse 1.
Referring to fig. 2, the indoor unit 2 includes a casing 21, and a first-stage evaporator 23, a first-stage condenser 24, a second-stage evaporator 25, a second-stage condenser 26, and a centrifugal fan 22 sequentially disposed from bottom to top inside the casing 21, where the casing 21 is placed on the ground, and the lower end surface of the casing 21 is ventilated, and the centrifugal fan 22 is disposed at a position on the upper side of the casing 21 away from the wall of the greenhouse 1; the primary evaporator 23, the primary condenser 24, the secondary evaporator 25 and the secondary condenser 26 are communicated into the same heat pump loop 4, the primary evaporator 23 is connected with the secondary evaporator 25 in parallel, the primary condenser 24 is connected with the secondary condenser 26 in parallel, the primary evaporator 23 is connected with the primary condenser 24 or the secondary condenser 26 in parallel, and heat transfer working media are arranged inside the heat pump loop 4.
After the indoor unit 2 is started, the centrifugal fan 22 can suck the gas in the greenhouse 1 into the interior of the enclosure 21 from the lower part of the enclosure 21, the air exchanges heat with the primary evaporator 23 or the secondary evaporator 25 to reduce the temperature of the air, the humidity in the air is correspondingly reduced, the air exchanges heat with the primary condenser 24 or the secondary condenser 26 to increase the temperature of the air, and then the air flows back to the interior of the greenhouse 1 from the upper end face of the enclosure 21 again, so that the processes of increasing the temperature of the interior of the greenhouse 1 to a constant temperature, dehumidifying to a constant humidity are realized, and the photosynthesis of crops is promoted.
Referring to fig. 1, after the indoor units 2 are started, the air temperature and humidity around the indoor units 2 will change first, and in order to reduce the local temperature inside the greenhouse 1 from being too high, two axial fans 6 are correspondingly arranged above each indoor unit 2, and the two axial fans 6 are arranged on two sides of the indoor units 2 and are fixedly connected with the wall of the greenhouse 1.
Referring to fig. 3, in the present embodiment, the heat pump circuit 4 includes a compressor 41, an expansion valve 42, a filter 43, and a reservoir 44 in addition to the first-stage evaporator 23, the first-stage condenser 24, the second-stage evaporator 25, and the second-stage condenser 26, an outlet of the compressor 41 is communicated with inlets of the first-stage condenser 24 and the second-stage condenser 26, outlets of the first-stage condenser 24 and the second-stage condenser 26 are sequentially communicated with the expansion valve 42, the filter 43, and the reservoir 44, an outlet of the reservoir 44 is communicated with inlets of the first-stage evaporator 23 and the second-stage evaporator 25, and outlets of the first-stage evaporator 23 and the second-stage evaporator 25 are communicated.
Referring to fig. 2, in the working process of the indoor unit 2, in order to make the air fully contact with the primary evaporator 23, the primary condenser 24, the secondary evaporator 25 and the secondary condenser 26 for heat exchange, the heat exchange fins inside the primary evaporator 23, the primary condenser 24, the secondary evaporator 25 and the secondary condenser 26 are inclined along the direction from bottom to top in the direction away from the wall of the greenhouse 1; meanwhile, in the process of heat exchange between the air and the primary evaporator 23 and the secondary evaporator 25, some water drops are generated on the fins of the primary evaporator 23 and the secondary evaporator 25, and a water tank 27 is arranged at the lowest part inside the casing 21 for collecting and recovering the water drops conveniently.
Referring to fig. 2 and 3, the outdoor unit 3 includes an outdoor unit evaporator connected in series with both the primary condenser 24 and the secondary condenser 26, and a switching member provided in the heat pump circuit 4 and switching the primary condenser 24 or the secondary condenser 26 between the outdoor unit evaporator and the primary evaporator 23 or the secondary evaporator 25. When the inside of the greenhouse 1 needs to be heated and dehumidified, the primary condenser 24 or the secondary condenser 26 can be communicated with the primary evaporator 23 or the secondary evaporator 25 through the conversion piece; after the humidity inside the greenhouse 1 reaches the required range, the first-stage condenser 24 or the second-stage condenser 26 can be communicated with the outdoor unit evaporator through the conversion member, so that the situation that the humidity inside the greenhouse 1 is continuously reduced can be avoided.
Referring to fig. 3 and 4, the switch includes a three-way valve 32, the three-way valve 32 being installed at a connection of the accumulator 44 and the one-stage evaporator 23 and in which one of outlets of the three-way valve 32 communicates with an inlet of an outer machine evaporator, which communicates with an inlet of the compressor 41.
Referring to fig. 3 and 4, in order to increase the function of the temperature-increasing constant temperature and humidity system, a four-way valve 5 is connected to a circuit in which the primary condenser 24 or the secondary condenser 26 communicates with the outdoor unit evaporator, and the heat pump circuit 4 can reduce the temperature of the interior of the greenhouse 1 by the four-way valve 5.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (10)
1. The utility model provides a hot-blast formula heats constant temperature and humidity system for adjust greenhouse (1) inside temperature and humidity, its characterized in that: the indoor unit (2) comprises an indoor unit (2), wherein the indoor unit (2) comprises a casing (21) with air flowing between an upper end face and a lower end face, a primary evaporator (23) and a primary condenser (24) are sequentially arranged inside the casing (21) from bottom to top, the primary evaporator (23) and the primary condenser (24) are communicated in the same heat pump loop (4), a heat transfer working medium is arranged in the heat pump loop (4), a centrifugal fan (22) is arranged below the primary evaporator (23) or above the primary condenser (24), and an outdoor unit (3) for heating the indoor is arranged outdoors.
2. The hot air type temperature-increasing constant temperature and humidity system according to claim 1, wherein: a secondary condenser (26) is arranged above the primary condenser (24), and the secondary condenser (26) is connected in series in the heat pump loop (4) and is arranged in parallel with the primary condenser (24).
3. The hot air type temperature-increasing constant temperature and humidity system according to claim 2, wherein: a secondary evaporator (25) is arranged between the primary condenser (24) and the secondary condenser (26), and the secondary evaporator (25) is connected in series in the heat pump loop (4) and is arranged in parallel with the primary evaporator (23).
4. The hot air type temperature-increasing constant temperature and humidity system according to any one of claims 1 to 3, wherein: the outdoor unit (3) comprises an outdoor unit evaporator, the outdoor unit evaporator is connected with the primary condenser (24) in series, and a conversion piece for switching the primary condenser (24) between the outdoor unit evaporator and the primary evaporator (23) is arranged in the heat pump loop (4).
5. The hot air type temperature-increasing constant temperature and humidity system according to claim 4, wherein: a four-way valve (5) is arranged in a loop of the series connection of the outdoor unit evaporator and the first-stage condenser (24).
6. The hot air type temperature-increasing constant temperature and humidity system according to claim 1, wherein: a water tank (27) is arranged at the lowest part of the machine shell (21).
7. The hot air type temperature-increasing constant temperature and humidity system according to claim 3, wherein: the fins in the primary evaporator (23), the primary condenser (24), the secondary evaporator (25) and the secondary condenser (26) are all obliquely arranged.
8. The hot air type temperature-increasing constant temperature and humidity system according to claim 1, wherein: the top surface of the greenhouse (1) is provided with glass.
9. The hot air type temperature-increasing constant temperature and humidity system according to claim 1, wherein: an axial flow fan (6) is arranged on the inner side surface of the greenhouse (1).
10. The hot air type temperature-increasing constant temperature and humidity system according to claim 9, wherein: each indoor unit (2) corresponds to two axial flow fans (6), and the two axial flow fans (6) are respectively arranged on two sides of the indoor unit (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010797004.2A CN112032815A (en) | 2020-08-10 | 2020-08-10 | Hot air type temperature-increasing constant temperature and humidity system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010797004.2A CN112032815A (en) | 2020-08-10 | 2020-08-10 | Hot air type temperature-increasing constant temperature and humidity system |
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| Publication Number | Publication Date |
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| CN112032815A true CN112032815A (en) | 2020-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010797004.2A Pending CN112032815A (en) | 2020-08-10 | 2020-08-10 | Hot air type temperature-increasing constant temperature and humidity system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235725A (en) * | 2010-04-28 | 2011-11-09 | 侯春来 | Air-conditioning system of multi-connected solar air source heat pump |
| CN103477916A (en) * | 2007-11-08 | 2014-01-01 | 以色列国家农业和农村发展农业研究组织沃尔坎尼中心 | Method and system for heating and dehumidifying |
| KR200475073Y1 (en) * | 2013-10-01 | 2014-11-07 | (주)덕산코트랜 | Thermo-hygristat for Mushroom Culture |
| CN108592439A (en) * | 2018-04-09 | 2018-09-28 | 浙江欧伦电气有限公司 | Multifunction constant temperature dehumidification system and constant temperature dehumidification control method |
-
2020
- 2020-08-10 CN CN202010797004.2A patent/CN112032815A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103477916A (en) * | 2007-11-08 | 2014-01-01 | 以色列国家农业和农村发展农业研究组织沃尔坎尼中心 | Method and system for heating and dehumidifying |
| CN102235725A (en) * | 2010-04-28 | 2011-11-09 | 侯春来 | Air-conditioning system of multi-connected solar air source heat pump |
| KR200475073Y1 (en) * | 2013-10-01 | 2014-11-07 | (주)덕산코트랜 | Thermo-hygristat for Mushroom Culture |
| CN108592439A (en) * | 2018-04-09 | 2018-09-28 | 浙江欧伦电气有限公司 | Multifunction constant temperature dehumidification system and constant temperature dehumidification control method |
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Application publication date: 20201204 |