CN108644941A - A kind of recovery type heat split-type air conditioner that fresh air purifying is combined with mechanical refrigeration - Google Patents
A kind of recovery type heat split-type air conditioner that fresh air purifying is combined with mechanical refrigeration Download PDFInfo
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- CN108644941A CN108644941A CN201810356055.4A CN201810356055A CN108644941A CN 108644941 A CN108644941 A CN 108644941A CN 201810356055 A CN201810356055 A CN 201810356055A CN 108644941 A CN108644941 A CN 108644941A
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- air
- fresh
- combined
- mechanical refrigeration
- air conditioner
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Classifications
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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
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/0035—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using evaporation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
- F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
-
- 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
- F24F13/28—Arrangement or mounting of filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/007—Ventilation with forced flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
-
- 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]
- Y02B30/56—Heat recovery units
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The recovery type heat split-type air conditioner that a kind of fresh air purifying disclosed by the invention is combined with mechanical refrigeration, including pass through air hose a and the air hose b indoor units connected and outdoor unit respectively；Indoor unit is also connected by refrigerant tubing with outdoor unit.Indoor unit includes indoor unit casing, and indoor unit casing both sides are symmetrically arranged with air outlet and air inlet, and air inlet is interior to be disposed with heat exchanger and evaporator according to air-flow direction；Evaporator is sequentially connected compressor, condenser and expansion valve by refrigerant tubing and forms closure pipeline.The recovery type heat split-type air conditioner of the present invention ensure that indoor air quality, reduces conventional two-piece air conditioning energy consumption, meets a variety of needs, energy conservation and environmental protection；Indoor and outdoor unit uses integral structure, is easily installed and application, has applicability for the civilian and industrial building in different humidity area.
Description
Technical field
The invention belongs to air conditioner technical fields, and in particular to a kind of recuperation of heat that fresh air purifying is combined with mechanical refrigeration
Type split-type air conditioner.
Background technology
Nowadays, air pollution problems inherent is severe, and fresh air system is increasingly valued by people, although conventional two-piece air-conditioning
Obtain commonly used, but such air-conditioning, based on circulated air in process chamber, indoor shortage fresh air, air quality is difficult to meet and want
It asks, if things go on like this, negative unhealthy, therefore when in use, generally take the mode that windowing is divulged information to be wanted to meet the fresh air of personnel
It asks, but is introduced directly into fresh air, not only increase the load of indoor unit, air conditioning energy consumption is promoted to increase, and it is empty to introduce pollution
Gas can not still solve problem of indoor air quality.Further, since being in outdoor for a long time, condenser fin is easy dust stratification, condensation
Device heat exchange receives harmful effect, and summer high temperature weather, and outdoor temperature is excessively high, and condenser heat dissipation is unsmooth, and compressor is susceptible to
High pressure stoppage protection is no longer indoor refrigeration.
Invention content
The object of the present invention is to provide the recovery type heat split-type air conditioners that a kind of fresh air purifying is combined with mechanical refrigeration, solve
The problem of traditional split air conditioner air-conditioning indoor air quality is low, high energy consumption, the easy dust stratification of condenser fin, summer are easily stopped.
The technical solution adopted in the present invention is a kind of split type sky of recovery type heat that fresh air purifying is combined with mechanical refrigeration
It adjusts, including passes through air hose a and the air hose b indoor units connected and outdoor unit respectively；Indoor unit and outdoor unit also pass through
Refrigerant tubing connects.
It is of the invention to be further characterized in that,
Indoor unit includes indoor unit casing, and indoor unit casing both sides are symmetrically arranged with air outlet and air inlet, air inlet
It is interior to be disposed with heat exchanger and evaporator according to air-flow direction；
Corresponding indoor unit casing is connected with air hose a at the top of heat exchanger, and heat exchanger bottom corresponds to indoor unit casing setting
There is return air inlet a；
Between heat exchanger and evaporator return air inlet b is additionally provided on the corresponding indoor unit casing in bottom；
Air inlet connects air hose b.
Evaporator is sequentially connected compressor, condenser and expansion valve by refrigerant tubing and forms closure pipeline；
Compressor, condenser and expansion valve are respectively positioned on outdoor unit.
It is additionally provided with air-valve in air hose a.
Outdoor unit includes outdoor shell, and outdoor shell lower part both sides are symmetrically arranged with fresh wind port a and air outlet a,
In fresh wind port a middle effect air filter, fresh air preheating device, direct evaporating-cooling list are disposed with according to fresh air flow direction
Member, pressure fan；
Compressor, mist cooling and dust removing units, cold are also disposed at the top of direct evaporating-cooling unit from top to bottom
Condenser, exhaust blower and exhaust outlet；
Mist cooling and the corresponding outdoor shell both sides of dust removing units are also respectively provided with fresh wind port b and air outlet b.
Air outlet a connects air hose b；
Air outlet b connection air hoses a.
Direct evaporating-cooling unit includes filler, is provided with water distributor b at the top of filler, filler bottom is provided with water tank, cloth
Hydrophone b is connected with water tank by feed pipe a.
It is additionally provided with water pump on feed pipe a.
Mist cooling and dust removing units include water distributor a, and water distributor a passes sequentially through feed pipe b, feed pipe a and water tank and connects
It is logical.
It is additionally provided with regulating valve on feed pipe b.
The advantageous effect of recovery type heat split-type air conditioner of the present invention is：
(1) by filtering, purifying to fresh air, changeable tradition split air conditioner can not expire recovery type heat split-type air conditioner of the present invention
The problem of sufficient indoor air quality；
(2) recovery type heat split-type air conditioner of the present invention is right using the cold or heat of indoor exhaust wind by heat recovery technology
Fresh air carries out pre-heater or pre-cooler, can reduce energy consumption of compressor and extend compressor service life；
(3) recovery type heat split-type air conditioner of the present invention by fresh air, energy regenerating return air realize atomizing evaporation
It is cooling, the temperature of condenser cooling air-flow can be reduced, to reduce condenser temperature and pressure, refrigeration performance is improved, saves energy
Consumption realizes the efficient utilization of energy, while being filtered purification to cooling air-flow, protects condenser；
(4) recovery type heat split-type air conditioner of the present invention by fresh air filtering, purifier and condenser optimization heat sink and
It is outdoor machine integrated and heat regenerator is machine integrated with interior, it is easily installed application；
(5) recovery type heat split-type air conditioner of the present invention is integrated with outdoor unit by pressure fan, and indoor unit is not provided with wind turbine,
Room noise can be reduced, be conducive to indoor acoustical environment.
Description of the drawings
Fig. 1 is a kind of structural representation for the recovery type heat split-type air conditioner that fresh air purifying is combined with mechanical refrigeration of the present invention
Figure.
In figure, 1. fresh wind port a imitate air filter in 2., 3. fresh air preheating devices, 4. fillers, 5. water tanks, 6. water pumps, and 7.
Pressure fan, 8. heat exchangers, 9. return air inlet a, 10. return air inlet b, 11. evaporators, 12. osculum a, 13. air outlets, 14. wind
Valve, 15. exhaust outlets, 16. exhaust blowers, 17. condensers, 18. water distributor a, 19. fresh wind port b, 20. water distributor b, 21. osculum b,
22. compressor, 23. expansion valves, 24. regulating valves, 25. air inlets, 26. air hose a, 27. refrigerant tubings, 28. air outlet a, 29.
Air hose b, 30. air outlet b, 31. feed pipe a, 32. feed pipe b.
Specific implementation mode
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
A kind of recovery type heat split-type air conditioner that fresh air purifying is combined with mechanical refrigeration of the present invention, as shown in Figure 1, including dividing
Do not pass through air hose a26 and the air hose b29 indoor units connected and outdoor unit；Indoor unit and outdoor unit also pass through refrigerant
Pipeline 27 connects.Outdoor unit is sent into indoor unit, subsequent indoor unit by after new air cooling or heating by air hose b29
Return air after heat absorption or heat release is sent into outdoor unit by air hose a26, carry out heat again with fresh air utilizes recycling.
Indoor unit includes indoor unit casing, and indoor unit casing both sides are symmetrically arranged with air outlet 13 and air inlet 25, into
In air port 25 heat exchanger 8 and evaporator 11 are disposed with according to air-flow direction；The corresponding indoor unit in 8 top of heat exchanger
Shell is connected with air hose a26, and 8 bottom of heat exchanger corresponds to indoor unit casing and is provided with return air inlet a9；Heat exchanger 8 and evaporator
Between 11 return air inlet b10 is additionally provided on the corresponding indoor unit casing in bottom；Air inlet 25 connects air hose b29.Evaporator 11 is also
It is provided with osculum a12.
Mechanical refrigeration unit is specially：Evaporator 11 is sequentially connected compressor 22, condenser 17 by refrigerant tubing 27
With expansion valve 23 and form closure pipeline；Compressor 22, condenser 17 and expansion valve 23 are respectively positioned on outdoor unit.
Air-valve 14 is additionally provided in air hose a26, air-valve 14 adjusts the folding in backwind tube.
Outdoor unit includes outdoor shell, and outdoor shell lower part both sides are symmetrically arranged with fresh wind port a1 and air outlet
In a28, fresh wind port a1 middle effect air filter 2, fresh air preheating device 3, directly evaporation are disposed with according to fresh air flow direction
Cooling unit, pressure fan 7；
Also be disposed with from top to bottom at the top of direct evaporating-cooling unit compressor 22, mist cooling and dust removing units,
Condenser 17, exhaust blower 16 and exhaust outlet 15；
Mist cooling and the corresponding outdoor shell both sides of dust removing units are also respectively provided with fresh wind port b19 and air outlet
b30。
Air outlet a28 connects air hose b29；Air outlet b30 connection air hoses a26.
Direct evaporating-cooling unit includes filler 4, and 4 top of filler is provided with water distributor b20, and 4 bottom of filler is provided with water
Case 5, water distributor b20 and water tank 5 are connected by feed pipe a31.Water pump 6 is additionally provided on feed pipe a31.Water pump 6 provides power,
Recirculated water in water tank 5 is sent to water distributor b20 by feed pipe a31, the downward Sprayer Circulation water of water distributor b20, fresh air with follow
Ring water carries out heat exchange in filler 4, and then, recirculated water is fallen after rise to water tank 5, is so recycled.
Mist cooling and dust removing units include water distributor a18, and water distributor a18 passes sequentially through feed pipe b32, feed pipe a31
It is connected with water tank 5.
Regulating valve 24 is additionally provided on feed pipe b32, regulating valve 24 controls the folding of water distributor a18.
The course of work of recovery type heat split-type air conditioner of the present invention is as follows：
(1) when in external temperature is relatively low or winter
Interior generally relies on municipal heating at this time.Fresh air preheating device 3, water pump 6, air-valve 14, pressure fan 7 are opened, closing is new
Air port b 19, Mechanical refrigeration cycles are closed, and door and window is closed tight.
Outdoor fresh air enters outdoor unit under the action of pressure fan 7, and 2 impurity screening of air filter, fresh air are imitated in
Preheater 3 preheats, and humidifies and purifies by direct evaporating-cooling unit, and unit absorbs return air by heat exchanger 8 indoors
In heat, be finally mixed and fed into interior with return air；After being mixed with indoor air, energy is carried out by heat exchanger 8
Outdoor is discharged by exhaust blower 16, through exhaust outlet 15 again through air-valve 14 in return air after amount recycling.
(2) when in the suitable transition season of outdoor temperature
Water pump 6, pressure fan 7 are opened, fresh air preheating device 3, air-valve 14 are closed, closes Mechanical refrigeration cycles, door and window is opened.
Outdoor fresh air enters from fresh wind port a1, and air filter 2 is imitated in and is filtered, then is humidified through direct evaporating-cooling unit
Cooling and purification, after be sent by air hose b29 by pressure fan 7 indoor, be finally discharged by door and window, reach indoor ventilating, cooling plus
Wet and air purification purpose.
(3) when in external temperature is higher or summer
Close direct evaporative cooler water distributor 20, air preheater 3, open heat exchanger 8, Mechanical refrigeration cycles,
Condenser 17, water distributor a18, fresh wind port b19, door and window are closed tight.
Outdoor fresh air enters from fresh wind port a1, under the action of pressure fan 7, imitates after air filter 2 filters and enters in
Indoor unit is pre-chilled by heat exchanger 8, and is mixed with the return air for getting in unit by return air inlet b 10, finally by interior
11 dehumidification cooling of machine evaporator is sent into indoor；Through heat exchanger 8 carry out energy regenerating after return air, through air-valve 14 and air hose a26
Into the top of outdoor unit, mixed with the fresh air for entering outdoor unit by fresh wind port b19, and with condenser 17, water distributor
The water mist that a18 sprays is in direct contact, and direct evaporating-cooling process, constant enthalpy cooling occurs, and the cooling air-flow after being cooled down flows through machine
Condenser 17 is finally discharged by exhaust blower 15.
Split-type air conditioner of the present invention by fresh air, energy regenerating return air realize atomizing evaporation cooling, can reduce
The temperature of 17 cooling air-flow of condenser improves refrigeration performance to reduce by 17 temperature and pressure of condenser, saves energy consumption, realizes
The efficient utilization of energy, while purification is filtered to cooling air-flow, protect condenser 17；Ensure indoor air quality simultaneously,
Conventional two-piece air conditioning energy consumption is reduced, a variety of needs, energy conservation and environmental protection are met；Indoor and outdoor unit uses integral structure, is convenient for
Installation and application, there is good practical value.
Claims (10)
1. the recovery type heat split-type air conditioner that a kind of fresh air purifying is combined with mechanical refrigeration, which is characterized in that including passing through respectively
The indoor unit and outdoor unit of air hose a (26) and air hose b (29) connections；The indoor unit and outdoor unit also pass through refrigeration
Agent pipeline (27) connects.
2. the recovery type heat split-type air conditioner that a kind of fresh air purifying according to claim 1 is combined with mechanical refrigeration, special
Sign is that the indoor unit includes indoor unit casing, and indoor unit casing both sides are symmetrically arranged with air outlet (13) and air inlet
(25), heat exchanger (8) and evaporator (11) are disposed with according to air-flow direction in air inlet (25)；
Corresponding indoor unit casing is connected with air hose a (26) at the top of the heat exchanger (8), in the respective chamber/chambers of heat exchanger (8) bottom
Casing body is provided with return air inlet a (9)；
Between the heat exchanger (8) and evaporator (11) return air inlet b (10) is additionally provided on the corresponding indoor unit casing in bottom；
The air inlet (25) connects air hose b (29).
3. the recovery type heat split-type air conditioner that a kind of fresh air purifying according to claim 2 is combined with mechanical refrigeration, special
Sign is that the evaporator (11) is sequentially connected compressor (22), condenser (17) and expansion valve by refrigerant tubing (27)
(23) and closure pipeline is formed；
The compressor (22), condenser (17) and expansion valve (23) are respectively positioned on outdoor unit.
4. the recovery type heat split-type air conditioner that a kind of fresh air purifying according to claim 2 is combined with mechanical refrigeration, special
Sign is, air-valve (14) is additionally provided in the air hose a (26).
5. the recovery type heat split-type air conditioner that a kind of fresh air purifying according to claim 1 is combined with mechanical refrigeration, special
Sign is that the outdoor unit includes outdoor shell, and outdoor shell lower part both sides are symmetrically arranged with fresh wind port a (1) and go out
In air port a (28), fresh wind port a (1) middle effect air filter (2), fresh air preheating device are disposed with according to fresh air flow direction
(3), direct evaporating-cooling unit, pressure fan (7)；
It is also disposed with compressor (22), mist cooling and dedusting list from top to bottom at the top of the direct evaporating-cooling unit
Member, condenser (17), exhaust blower (16) and exhaust outlet (15)；
The corresponding outdoor shell both sides of the mist cooling and dust removing units are also respectively provided with fresh wind port b (19) and outlet air
Mouth b (30).
6. the recovery type heat split-type air conditioner that a kind of fresh air purifying according to claim 5 is combined with mechanical refrigeration, special
Sign is that the air outlet a (28) connects air hose b (29)；
Air outlet b (30) the connection air hose a (26).
7. the recovery type heat split-type air conditioner that a kind of fresh air purifying according to claim 5 is combined with mechanical refrigeration, special
Sign is that the direct evaporating-cooling unit includes filler (4), and water distributor b (20), filler (4) bottom are provided at the top of filler (4)
Portion is provided with water tank (5), water distributor b (20) and water tank (5) and is connected by feed pipe a (31).
8. the recovery type heat split-type air conditioner that a kind of fresh air purifying according to claim 7 is combined with mechanical refrigeration, special
Sign is, water pump (6) is additionally provided on the feed pipe a (31).
9. the recovery type heat split-type air conditioner that a kind of fresh air purifying according to claim 7 or 8 is combined with mechanical refrigeration,
It is characterized in that, the mist cooling and dust removing units include (18) water distributor a, and water distributor a (18) passes sequentially through feed pipe b
(32), feed pipe a (31) is connected with water tank (5).
10. the recovery type heat split-type air conditioner that a kind of fresh air purifying according to claim 9 is combined with mechanical refrigeration, special
Sign is, regulating valve (24) is additionally provided on the feed pipe b (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810356055.4A CN108644941B (en) | 2018-04-19 | 2018-04-19 | Heat recovery type split air conditioner combining fresh air purification and mechanical refrigeration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810356055.4A CN108644941B (en) | 2018-04-19 | 2018-04-19 | Heat recovery type split air conditioner combining fresh air purification and mechanical refrigeration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108644941A true CN108644941A (en) | 2018-10-12 |
| CN108644941B CN108644941B (en) | 2020-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810356055.4A Active CN108644941B (en) | 2018-04-19 | 2018-04-19 | Heat recovery type split air conditioner combining fresh air purification and mechanical refrigeration |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109177691A (en) * | 2018-10-16 | 2019-01-11 | 西安交通大学 | A kind of electric automobile heat-pump air-conditioning system and its control method |
| CN110398012A (en) * | 2019-08-27 | 2019-11-01 | 上海盈达空调设备股份有限公司 | Combined type central air conditioner system and method |
| CN113432260A (en) * | 2021-06-26 | 2021-09-24 | 赵建川 | Multi-machine fusion healthy, safe, comfortable, space-saving and power-saving intelligent air conditioner |
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| CN202675496U (en) * | 2012-04-05 | 2013-01-16 | 西安工程大学 | Jet-flow noise-elimination type evaporative cooling air conditioning unit |
| CN104566724A (en) * | 2015-01-05 | 2015-04-29 | 西安工程大学 | Ventilation air-conditioning system for subway environmental control system |
| CN208253831U (en) * | 2018-04-19 | 2018-12-18 | 西安工程大学 | In conjunction with the recovery type heat split-type air conditioner of mechanical refrigeration and evaporation cooling technique |
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2018
- 2018-04-19 CN CN201810356055.4A patent/CN108644941B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202675496U (en) * | 2012-04-05 | 2013-01-16 | 西安工程大学 | Jet-flow noise-elimination type evaporative cooling air conditioning unit |
| CN104566724A (en) * | 2015-01-05 | 2015-04-29 | 西安工程大学 | Ventilation air-conditioning system for subway environmental control system |
| CN208253831U (en) * | 2018-04-19 | 2018-12-18 | 西安工程大学 | In conjunction with the recovery type heat split-type air conditioner of mechanical refrigeration and evaporation cooling technique |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109177691A (en) * | 2018-10-16 | 2019-01-11 | 西安交通大学 | A kind of electric automobile heat-pump air-conditioning system and its control method |
| CN109177691B (en) * | 2018-10-16 | 2024-01-09 | 西安交通大学 | Electric automobile heat pump air conditioning system and control method thereof |
| CN110398012A (en) * | 2019-08-27 | 2019-11-01 | 上海盈达空调设备股份有限公司 | Combined type central air conditioner system and method |
| CN113432260A (en) * | 2021-06-26 | 2021-09-24 | 赵建川 | Multi-machine fusion healthy, safe, comfortable, space-saving and power-saving intelligent air conditioner |
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| Publication number | Publication date |
|---|---|
| CN108644941B (en) | 2020-12-08 |
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Effective date of registration: 20201112 Address after: 710000 1106, block B, latte City, 318 Yanta South Road, Qujiang New District, Xi'an City, Shaanxi Province Applicant after: Armstrong (Xi'an) intelligent fluid technology Co., Ltd Address before: 710048 Shaanxi city of Xi'an Province Jinhua Road No. 19 Applicant before: XI'AN POLYTECHNIC University |
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