CN107305045A - A kind of changes in temperature trilogy supply air-conditioning - Google Patents
A kind of changes in temperature trilogy supply air-conditioning Download PDFInfo
- Publication number
- CN107305045A CN107305045A CN201610257557.2A CN201610257557A CN107305045A CN 107305045 A CN107305045 A CN 107305045A CN 201610257557 A CN201610257557 A CN 201610257557A CN 107305045 A CN107305045 A CN 107305045A
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- Prior art keywords
- heat exchanger
- changes
- temperature
- supply air
- conditioning
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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
- F24F5/001—Compression cycle type
-
- 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
-
- 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
-
- 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
- F24F5/0096—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 combined with domestic apparatus
-
- 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
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
- F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/18—Details or features not otherwise provided for combined with domestic apparatus
- F24F2221/183—Details or features not otherwise provided for combined with domestic apparatus combined with a hot-water boiler
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
The present invention relates to air conditioner technical field, more particularly to a kind of changes in temperature trilogy supply air-conditioning.The hot trilogy supply air-conditioning of changes in temperature includes compressor, four-way valve, indoor heat exchanger, throttling arrangement, outdoor heat exchanger, and hot water, and the hot water includes the water container heat exchanger for being used to heat the water in hot water；The water container heat exchanger includes the entrance point and the port of export for being respectively used to refrigerant turnover, the entrance point and the port of export are connected with the connecting line between compressor air-discharging end and four-way valve, and control valve is provided with the pipeline between two junctions, control refrigerant to flow directly into four-way valve by the opening and closing of control valve or four-way valve is flowed into after water container heat exchanger.In the present embodiment, it can realize that summer heat recovery, winter prepare hot water and heating by above-mentioned air-conditioning, and the hot trilogy supply air-conditioning of changes in temperature that provides of present embodiment also have it is simple in construction, small, and the low advantage of manufacturing cost and use cost is changed to existing air conditioner structure.
Description
Technical field
The present invention relates to air conditioner technical field, more particularly to a kind of changes in temperature trilogy supply air-conditioning.
Background technology
Current air energy application field can be divided on refrigeration, heating, the big field of hot water three, domestic market both
There is the type of both cooling and heating, also there is the type of changes in temperature heat three, but changes in temperature heat three is changed to from both cooling and heating machine-cut
With machine, the system made changes very complicated, and typical practice has three below, and one is to use two press systems,
One of them bigger compressor assembly is used for heating heating, and a smaller compressor assembly is used for heating life
Apply flexibly water；Two be that heating and domestic water are heated using same heat exchanger, so both heating-up temperatures
Quite, cause user using uncomfortable, do not save；Refrigeration and water heating can not be simultaneously when two summers used
Operation；Three use fluorine circularly cooling mode, heating and domestic water one when being refrigeration, though solve summer
Refrigeration and water heating can be but complicated while run when using, and user's initial cost is larger.
In view of the above-mentioned problems, proposing a kind of hot trilogy supply air-conditioning of changes in temperature, it, which can solve the problem that in the prior art, is present
Complicated, inconvenient problem with use.
The content of the invention
It is an object of the invention to propose a kind of hot trilogy supply air-conditioning of changes in temperature, sky of the prior art can solve the problem that
Adjust complicated, the inconvenient problem with use existed.
For up to this purpose, the present invention uses following technical scheme：
A kind of hot trilogy supply air-conditioning of changes in temperature, including compressor, four-way valve, indoor heat exchanger, throttling arrangement and
Outdoor heat exchanger, and hot water, the hot water include being used to add the water in hot water
The water container heat exchanger of heat；
The water container heat exchanger include be respectively used to refrigerant turnover entrance point and the port of export, the entrance point and
Connecting line between the port of export and compressor air-discharging end and four-way valve is connected, and between two junctions
Control valve is provided with pipeline, controls refrigerant to flow directly into four-way valve by the opening and closing of control valve or passes through water
Four-way valve is flowed into after case heat exchanger.
As a kind of preferred scheme of the hot trilogy supply air-conditioning of above-mentioned changes in temperature, the hot water includes crust, protected
Warm layer, enamel inner container, and the intake-outlet connected with enamel inner container, the water container heat exchanger, which is set in, to be warded off
The outside of porcelain inner bag.
As a kind of preferred scheme of the hot trilogy supply air-conditioning of above-mentioned changes in temperature, the water container heat exchanger changes for concurrent flow
Hot device.
As a kind of preferred scheme of the hot trilogy supply air-conditioning of above-mentioned changes in temperature, the control valve is magnetic valve, described
Magnetic valve normality is normally open, is off after upper electricity；
When magnetic valve is under normally open, the refrigerant discharged by compressor is directly entered four-way valve, works as electromagnetism
Valve is off down, and the refrigerant discharged by compressor flows into four-way valve again after being exchanged heat through water container heat exchanger.
It is used as a kind of preferred scheme of the hot trilogy supply air-conditioning of above-mentioned changes in temperature, the indoor heat exchanger and outdoor heat exchange
Device is fin-tube type heat exchanger.
It is used as a kind of preferred scheme of the hot trilogy supply air-conditioning of above-mentioned changes in temperature, in addition to electric-controlled plate, the control valve
It is connected, and is opened and closed under the control of electric-controlled plate with electric-controlled plate.
It is used as a kind of preferred scheme of the hot trilogy supply air-conditioning of above-mentioned changes in temperature, the indoor heat exchanger and outdoor heat exchange
Device is arranged in a housing, and is provided with fan in both housings.
As a kind of preferred scheme of the hot trilogy supply air-conditioning of above-mentioned changes in temperature, it is additionally provided with the hot water auxiliary
Help heater.
As a kind of preferred scheme of the hot trilogy supply air-conditioning of above-mentioned changes in temperature, the auxiliary heater is electric heater.
As a kind of preferred scheme of the hot trilogy supply air-conditioning of above-mentioned changes in temperature, the throttling arrangement is electric expansion valve.
Beneficial effects of the present invention are：In the present embodiment, the above-mentioned control to control valve and four-way valve is passed through
System, can realize that summer heat recovery, winter prepare hot water and heating, and will not be to the normal system of air-conditioning
Cold, heating operations are impacted, and the hot trilogy supply air-conditioning of changes in temperature that present embodiment is provided also has structure letter
It is single, small to the change of existing air conditioner structure, and the low advantage of manufacturing cost and use cost.
Brief description of the drawings
Fig. 1 is the structural representation for the hot trilogy supply air-conditioning of changes in temperature that the specific embodiment of the invention is provided.
Wherein：
1：Compressor；2：Four-way valve；3：Indoor heat exchanger；4：Throttling arrangement；5：Outdoor heat exchanger；
6：Hot water；7：Magnetic valve；8：First connecting line；9：Second connecting line；10：Auxiliary adds
Hot device；11：Entrance point；12：The port of export；13：Exhaust end；14：Inlet end.
Embodiment
Further illustrate technical scheme below in conjunction with the accompanying drawings and by embodiment.
As shown in figure 1, present embodiments provide for a kind of hot trilogy supply air-conditioning of changes in temperature, the air-conditioning includes compression
Machine 1, four-way valve 2, indoor heat exchanger 3, throttling arrangement 4, outdoor heat exchanger 5, and hot water 6.
Above-mentioned hot water 6 includes the water container heat exchanger for being used to heat the water in hot water 6.
Water container heat exchanger includes the entrance point 11 and the port of export 12 for being respectively used to refrigerant turnover, the He of entrance point 11
Connecting line between the port of export 12 and the exhaust end 13 of compressor 1 and four-way valve 2 is connected, and is connected positioned at two
Control valve is provided with pipeline between connecing, controls refrigerant to flow directly into four-way by the opening and closing of control valve
Valve 2 flows into four-way valve 2 after water container heat exchanger.In this embodiment, control valve is magnetic valve 7.
Specifically, connected between the exhaust end 13 of compressor 1 and four-way valve 2 by the first connecting line 8, its
In, the junction of the connecting line 8 of entrance point 11 and first of water container heat exchanger is the first junction, and water tank is changed
The junction of the connecting line 8 of the port of export 12 and first of hot device is the second junction, and the first junction is close to pressure
The exhaust end 13 of contracting machine 1, the second junction is between four-way valve 2, and the first junction and the second junction
Connecting line be the second connecting line 9, control valve is arranged on the second connecting line 9.
In the present embodiment, by the above-mentioned control to control valve and four-way valve 2, summer heat can be realized
Amount is reclaimed, winter prepares hot water and heating, and will not cause shadow to the normal refrigeration of air-conditioning, heating operations
Ring, and present embodiment provide the hot trilogy supply air-conditioning of changes in temperature also have it is simple in construction, to existing air conditioner structure
Change small, and the low advantage of manufacturing cost and use cost.
Hot water 6 includes crust, heat-insulation layer, enamel inner container, and the Inlet and outlet water connected with enamel inner container
Mouthful, water container heat exchanger is set in the outside of enamel inner container.Specifically, above-mentioned water container heat exchanger changes for concurrent flow
Hot device.
As preferred, control valve is magnetic valve 7, and the normality of magnetic valve 7 is normally open, in disconnected after upper electricity
Open state；
When magnetic valve 7 is under normally open, the refrigerant discharged by compressor 1 is directly entered four-way valve 2, when
Magnetic valve 7 is off down, and the refrigerant discharged by compressor 1 is flowed into again after being exchanged heat through water container heat exchanger
Four-way valve 2.
Changes in temperature trilogy supply air-conditioning also includes electric-controlled plate, and control valve is connected with electric-controlled plate, and in the control of electric-controlled plate
Lower opening and closing.
Indoor heat exchanger 3 and outdoor heat exchanger 5 are fin-tube type heat exchanger.Throttling arrangement 4 is electronic expansion
Valve.Indoor heat exchanger 3 and outdoor heat exchanger 5 are arranged in a housing, and are all provided with both housings
It is equipped with fan.In addition, above-mentioned air-conditioning also includes the air-conditioning common equipments such as gas-liquid separator, oil eliminator.
Auxiliary heater 10 is additionally provided with hot water 6.It can be used as by the setting of auxiliary heater 10
The stand-by equipment of heat pump, can improve the reliability that hot water 6 is heated.It is used as preferred, auxiliary
Heater 10 is electric heater.
In order to which the hot trilogy supply air-conditioning of above-mentioned changes in temperature is further explained, in present embodiment, also provide
The above-mentioned specific course of work of trilogy supply air-conditioning：
When air-conditioning only produces domestic hot-water：The acquiescence of magnetic valve 7 is normally open, is only producing domestic hot-water
When, magnetic valve 7 is in upper electrically disconnected state.HTHP refrigerant comes out from the exhaust end 13 of compressor 1,
Water container heat exchanger into hot water 6 releases heat, heats domestic water, and refrigerant is changed into cryogenic high pressure
Liquid, after four-way valve 2, the indoor heat exchanger 3 for getting in machine is subcooled, and enters back into outdoor unit process
Throttling arrangement 4 is changed into the gas-liquid mixture phase of low-temp low-pressure after throttling, subsequently into the outdoor heat exchange of outdoor unit
Device 5 absorbs heat, is changed into the gas of low-temp low-pressure, then flows through four-way valve 2 and return to the inlet end of compressor 1
14。
Although refrigerant is indoors in the subcooling process of heat exchanger 3, the heat of release is less, and being not excluded for will be above-mentioned
Process heats and produced domestic hot-water's process applied to air-conditioning.
When freezing and producing domestic hot-water：Magnetic valve 7 is off-state, and HTHP refrigerant is from compressor 1
Exhaust end 13 is come out, and heat is released into the water container heat exchanger in hot water 6, heats domestic water, is become
For the liquid of cryogenic high pressure, after four-way valve 2, the outdoor heat exchanger 5 into outdoor unit is subcooled, then passes through
The gas-liquid mixture phase for being changed into low-temp low-pressure after throttling arrangement 4 throttles is crossed, is changed subsequently into the interior of indoor set
Hot device 3 absorbs heat, and refrigerant is changed into the gas of low-temp low-pressure, then flows through four-way valve 2 and return to compressor 1
Inlet end 14.
Magnetic valve 7 is open mode during refrigeration：HTHP refrigerant comes out from the exhaust end 13 of compressor 1, by
In the reason of flow resistance, refrigerant can by magnetic valve 7, without flow through hot water 6, by four-way valve 2,
The liquid for being changed into cryogenic high pressure after heat is released into outdoor heat exchanger 5, is become after the throttling of throttling arrangement 4
For the gas-liquid mixed of low-temp low-pressure, heat is absorbed subsequently into the indoor heat exchanger 3 of indoor set, is changed into low temperature
The gas of low pressure, then flows through four-way valve 2 and returns to the inlet end 14 of compressor 1.
Magnetic valve 7 is open mode when heating heating, and HTHP refrigerant comes out from the exhaust end 13 of compressor 1,
After four-way valve 2, the indoor heat exchanger 3 for getting in machine releases the liquid for being changed into cryogenic high pressure after heat,
Then it is changed into the gas-liquid mixture phase of low-temp low-pressure after the throttling of throttling arrangement 4, subsequently into outdoor unit
Outdoor heat exchanger 5 absorbs heat, is changed into the gas of low-temp low-pressure, then flows through four-way valve 2 and return to compressor 1
Inlet end 14.
The technical principle of the present invention is described above in association with specific embodiment.These descriptions are intended merely to explain this
The principle of invention, and limiting the scope of the invention can not be construed in any way.Based on herein
Explain, those skilled in the art, which would not require any inventive effort, can associate other tools of the present invention
Body embodiment, these modes are fallen within protection scope of the present invention.
Claims (10)
1. a kind of hot trilogy supply air-conditioning of changes in temperature, including compressor (1), four-way valve (2), indoor heat exchanger (3),
Throttling arrangement (4) and outdoor heat exchanger (5), it is characterised in that also including hot water (6), the heat
Water tank (6) includes the water container heat exchanger for being used to heat the water in hot water (6)；
The water container heat exchanger includes the entrance point (11) and the port of export (12) for being respectively used to refrigerant turnover, institute
State entrance point (11) and the port of export (12) and compressor (1) exhaust end (13) and four-way valve (2) it
Between connecting line connection, and be provided with control valve on pipeline between two junctions, pass through control valve
Opening and closing come control refrigerant flow directly into four-way valve (2) or after water container heat exchanger flow into four-way valve (2).
2. the hot trilogy supply air-conditioning of changes in temperature according to claim 1, it is characterised in that the hot water
(6) crust, heat-insulation layer, enamel inner container, and the intake-outlet connected with enamel inner container, the water are included
Case heat exchanger is set in the outside of enamel inner container.
3. changes in temperature trilogy supply air-conditioning according to claim 1 or 2, it is characterised in that the water tank is changed
Hot device is parallel-flow heat exchanger.
4. changes in temperature trilogy supply air-conditioning according to claim 1, it is characterised in that the control valve is electricity
Magnet valve (7), magnetic valve (7) normality is normally open, is off after upper electricity；
When magnetic valve (7) is under normally open, the refrigerant discharged by compressor (1) is directly entered four-way
Valve (2), when magnetic valve (7) is off down, the refrigerant discharged by compressor (1) is changed through water tank
Four-way valve (2) is flowed into again after hot device heat exchange.
5. changes in temperature trilogy supply air-conditioning according to claim 1, it is characterised in that the indoor heat exchanger
And outdoor heat exchanger (5) is fin-tube type heat exchanger (3).
6. changes in temperature trilogy supply air-conditioning according to claim 1, it is characterised in that also including electric-controlled plate,
The control valve is connected with electric-controlled plate, and is opened and closed under the control of electric-controlled plate.
7. changes in temperature trilogy supply air-conditioning according to claim 1, it is characterised in that the indoor heat exchanger
(3) it is arranged at outdoor heat exchanger (5) in a housing, and fan is provided with both housings.
8. changes in temperature trilogy supply air-conditioning according to claim 1, it is characterised in that the hot water (6)
Inside it is additionally provided with auxiliary heater (10).
9. changes in temperature trilogy supply air-conditioning according to claim 8, it is characterised in that the auxiliary heater
(10) it is electric heater.
10. changes in temperature trilogy supply air-conditioning according to claim 1, it is characterised in that the throttling arrangement
(4) it is electric expansion valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610257557.2A CN107305045A (en) | 2016-04-22 | 2016-04-22 | A kind of changes in temperature trilogy supply air-conditioning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610257557.2A CN107305045A (en) | 2016-04-22 | 2016-04-22 | A kind of changes in temperature trilogy supply air-conditioning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107305045A true CN107305045A (en) | 2017-10-31 |
Family
ID=60150740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610257557.2A Pending CN107305045A (en) | 2016-04-22 | 2016-04-22 | A kind of changes in temperature trilogy supply air-conditioning |
Country Status (1)
| Country | Link |
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| CN (1) | CN107305045A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109442633A (en) * | 2018-10-31 | 2019-03-08 | 青岛海信日立空调系统有限公司 | Air conditioner circulating system and its control method |
| CN110749117A (en) * | 2019-11-15 | 2020-02-04 | 珠海格力电器股份有限公司 | Air conditioner, control method and device, air conditioning system, storage medium and processor |
| CN111536585A (en) * | 2020-05-19 | 2020-08-14 | 宁波奥克斯电气股份有限公司 | Air conditioner and sterilization and disinfection method |
| CN114279104A (en) * | 2021-11-15 | 2022-04-05 | 珠海格力电器股份有限公司 | Cold and heat source unit for breeding house and breeding house environment control system |
| CN114508871A (en) * | 2022-03-18 | 2022-05-17 | 黄靖宇 | Heat recovery heat pump |
| CN115264554A (en) * | 2022-07-12 | 2022-11-01 | 杭州鸿雁管道系统科技有限公司 | Ground heating hot water unit of natural fluorine ground water type central air conditioner and control method thereof |
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| CN204757497U (en) * | 2015-06-10 | 2015-11-11 | 皇明太阳能股份有限公司 | Cold, warm, hot water three way heat pump system |
| CN204923448U (en) * | 2015-09-15 | 2015-12-30 | 珠海格力电器股份有限公司 | Air-conditioning hot water system |
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| CN2937909Y (en) * | 2006-05-07 | 2007-08-22 | 珠海格力电器股份有限公司 | Air-conditioning water heater |
| CN103175324A (en) * | 2013-02-25 | 2013-06-26 | 华南理工大学 | Concurrent flow evaporative type condensation refrigerating unit with heat recovery |
| CN204757497U (en) * | 2015-06-10 | 2015-11-11 | 皇明太阳能股份有限公司 | Cold, warm, hot water three way heat pump system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109442633A (en) * | 2018-10-31 | 2019-03-08 | 青岛海信日立空调系统有限公司 | Air conditioner circulating system and its control method |
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| CN110749117A (en) * | 2019-11-15 | 2020-02-04 | 珠海格力电器股份有限公司 | Air conditioner, control method and device, air conditioning system, storage medium and processor |
| CN110749117B (en) * | 2019-11-15 | 2021-01-05 | 珠海格力电器股份有限公司 | Air conditioner, control method and device, air conditioning system, storage medium and processor |
| CN111536585A (en) * | 2020-05-19 | 2020-08-14 | 宁波奥克斯电气股份有限公司 | Air conditioner and sterilization and disinfection method |
| CN111536585B (en) * | 2020-05-19 | 2021-08-24 | 宁波奥克斯电气股份有限公司 | Air conditioner and sterilization and disinfection method |
| CN114279104A (en) * | 2021-11-15 | 2022-04-05 | 珠海格力电器股份有限公司 | Cold and heat source unit for breeding house and breeding house environment control system |
| CN114508871A (en) * | 2022-03-18 | 2022-05-17 | 黄靖宇 | Heat recovery heat pump |
| CN115264554A (en) * | 2022-07-12 | 2022-11-01 | 杭州鸿雁管道系统科技有限公司 | Ground heating hot water unit of natural fluorine ground water type central air conditioner and control method thereof |
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Application publication date: 20171031 |