CN107143953A - A kind of air injection enthalpy-increasing air-conditioning system - Google Patents
A kind of air injection enthalpy-increasing air-conditioning system Download PDFInfo
- Publication number
- CN107143953A CN107143953A CN201710355906.9A CN201710355906A CN107143953A CN 107143953 A CN107143953 A CN 107143953A CN 201710355906 A CN201710355906 A CN 201710355906A CN 107143953 A CN107143953 A CN 107143953A
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- valve
- expansion valve
- conditioning system
- injection enthalpy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- F24F5/0003—Exclusively-fluid 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- 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
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
- F25B41/22—Disposition of valves, e.g. of on-off valves or flow control valves between evaporator and compressor
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention provides a kind of air injection enthalpy-increasing air-conditioning system, including the second four-way valve (5) being serially connected between indoor heat exchanger (4) and outdoor heat exchanger (3), first valve port of the second four-way valve (5) is connected with indoor heat exchanger (4), 4th valve port is connected with outdoor heat exchanger (3), second valve port is connected with the one end of main road expansion valve (7), the other end of main road expansion valve (7) is connected with crossing one end of cold heat exchanger (6), the other end for crossing cold heat exchanger (6) is connected with the 3rd valve port of the second four-way valve (5), one end of bypass expansion valve (8) is connected with crossing cold heat exchanger (6), the other end of bypass expansion valve (8) is connected to the 3rd valve port and crosses between cold heat exchanger (6) or cross between cold heat exchanger (6) and main road expansion valve (7).The air injection enthalpy-increasing air-conditioning system that the present invention is provided can make refrigeration with simpler system structure, heat the operational effect under two patterns has been lifted.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly to a kind of air injection enthalpy-increasing air-conditioning system.
Background technology
The ability decay in low-temperature heating of traditional air-conditioning system is serious, and with the reduction of environment temperature, decay journey
Degree is also increasingly severe, it is difficult to meet the requirement of northern area low-temperature heating.In order to meet the requirement of northern area low-temperature heating,
Many producers have developed the air-conditioning system with air injection enthalpy-increasing.
At present, or the air-conditioning system with air injection enthalpy-increasing can only meet the purpose of lifting heating effect, it is difficult to take into account refrigeration
The refrigeration of pattern, otherwise refrigeration, the effect heated under two patterns can be taken into account, but refrigeration system is sufficiently complex, and be difficult to
All it is in both modes countercurrent flow between bypass refrigerant after ensureing main road refrigerant and throttling, causes under one of pattern
Effect give a discount.
Therefore, air injection enthalpy-increasing air-conditioning system how is made to have been lifted in the operational effect freezed, heated under two patterns,
Become those skilled in the art's technical problem urgently to be resolved hurrily.
The content of the invention
In view of this, the invention provides a kind of air injection enthalpy-increasing air-conditioning system, the air injection enthalpy-increasing air-conditioning system can with compared with
Simple system architecture makes refrigeration, the operational effect heated under two patterns lifted.
In order to achieve the above object, the present invention provides following technical scheme：
A kind of air injection enthalpy-increasing air-conditioning system, including main road expansion valve, bypass expansion valve, for change heat and refrigeration mode
The first four-way valve, and the refrigerant of main circulation loop is subcooled cross cold heat exchanger, the air injection enthalpy-increasing air-conditioning system
Also include being serially connected in the second four-way valve between indoor heat exchanger and outdoor heat exchanger, the first valve port of second four-way valve with
During one in the second valve port and the 3rd valve port conducting, the 4th valve port with it is another in second valve port and the 3rd valve port
Individual conducting, first valve port is connected with the indoor heat exchanger, and the 4th valve port is connected with the outdoor heat exchanger, described
Second valve port is connected with one end of the main road expansion valve, and the other end of the main road expansion valve crosses the one of cold heat exchanger with described
End connection, the other end for crossing cold heat exchanger is connected with the 3rd valve port, one end and the mistake of the bypass expansion valve
Cold heat exchanger is connected, the other end of the bypass expansion valve be connected to the 3rd valve port and it is described cross between cold heat exchanger or
It is described to cross between cold heat exchanger and the main road expansion valve.
Preferably, in above-mentioned air injection enthalpy-increasing air-conditioning system, the cold heat exchanger of crossing is plate type heat exchanger.
Preferably, in above-mentioned air injection enthalpy-increasing air-conditioning system, main road refrigerant is crossed at cold heat exchanger with bypass refrigerant described
Countercurrent flow.
Preferably, in above-mentioned air injection enthalpy-increasing air-conditioning system, the main road expansion valve is electric expansion valve or thermal expansion
Valve.
Preferably, in above-mentioned air injection enthalpy-increasing air-conditioning system, the bypass expansion valve is electric expansion valve or thermal expansion
Valve.
Preferably, in above-mentioned air injection enthalpy-increasing air-conditioning system, the indoor heat exchanger is shell and tube exchanger.
Preferably, in above-mentioned air injection enthalpy-increasing air-conditioning system, the outdoor heat exchanger is fin-tube type heat exchanger.
Preferably, in above-mentioned air injection enthalpy-increasing air-conditioning system, air injection enthalpy-increasing is provided with stop valve in loop.
It can be seen from above-mentioned technical proposal, in the air injection enthalpy-increasing air-conditioning system that provides of the present invention, heat exchanger and room indoors
One in the second four-way valve, the first valve port and the second valve port and the 3rd valve port of the second four-way valve is serially connected between external heat exchanger
During conducting, another in the 4th valve port and the second valve port and the 3rd valve port is turned on, and the first valve port is connected with indoor heat exchanger,
4th valve port is connected with outdoor heat exchanger, and main road expansion valve is sequentially connected between the second valve port and the 3rd valve port and supercooling exchanges heat
Device, one end of bypass expansion valve be connected to the 3rd valve port and cross between cold heat exchanger or cross cold heat exchanger and main road expansion valve it
Between, by the commutation function of the second four-way valve, liquid is taken when only a main road expansion valve need to be set to can be achieved with cooling system, heat
Point is before throttling, it can be seen that, the air injection enthalpy-increasing air-conditioning system can take into account low-temperature heating by simple system architecture
The raising of unattenuated and refrigerating capacity, compared with traditional air injection enthalpy-increasing air-conditioning system, can make refrigeration, heat under two patterns
Operational effect lifted.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is a kind of schematic diagram of air injection enthalpy-increasing air-conditioning system provided in an embodiment of the present invention.
Marked in figure：
1st, compressor；2nd, the first four-way valve；3rd, outdoor heat exchanger；4th, indoor heat exchanger；5th, the second four-way valve；6th, supercooling is changed
Hot device；7th, main road expansion valve；8th, bypass expansion valve.
Embodiment
In order to make it easy to understand, the invention will be further described below in conjunction with the accompanying drawings.
It is a kind of schematic diagram of air injection enthalpy-increasing air-conditioning system provided in an embodiment of the present invention referring to Fig. 1.
A kind of air injection enthalpy-increasing air-conditioning system provided in an embodiment of the present invention is changed including compressor 1, the first four-way valve 2, outdoor
Hot device 3, indoor heat exchanger 4, excessively the second four-way valve 5, cold heat exchanger 6, main road expansion valve 7 and bypass expansion valve 8.
Wherein, the first four-way valve 2 is heated and refrigeration mode for conversion, and crossing cold heat exchanger 6 is used for main circulation loop
Refrigerant is subcooled, and the second four-way valve 5 is serially connected between indoor heat exchanger 4 and outdoor heat exchanger 3, and the first of the second four-way valve 5
During one in valve port and the second valve port and the 3rd valve port conducting, another in the 4th valve port and the second valve port and the 3rd valve port
Conducting.
First valve port of the second four-way valve 5 is connected with indoor heat exchanger 4, and the 4th valve port is connected with outdoor heat exchanger 3, and second
Valve port is connected with one end of main road expansion valve 7, and the other end of main road expansion valve 7 is connected with crossing one end of cold heat exchanger 6, and supercooling is changed
The other end of hot device 6 is connected with the 3rd valve port, and one end of bypass expansion valve 8 is connected with crossing cold heat exchanger 6, bypass expansion valve 8
The other end is connected to the 3rd valve port and crossed between cold heat exchanger 6.Certainly, the other end of bypass expansion valve 8 can also be connected to
Between cold heat exchanger 6 and main road expansion valve 7.
As shown in figure 1, when the first four-way valve 2 is located at off states, exhaust outlet and the outdoor heat exchanger 3 of compressor 1 are turned on,
When second four-way valve 5 is located at off states, the 4th valve port (connection outdoor heat exchanger 3) and the 3rd valve port (connecting cold heat exchanger 6)
Conducting, the operation principle of air injection enthalpy-increasing air-conditioning system is as follows：
(1) when freezing, the first four-way valve 2 and the second four-way valve 5 are respectively positioned on off states.
Main road refrigerant flows：1 → the first 2 → outdoor heat exchanger of four-way valve of compressor 3 → the second, 5 → supercooling of four-way valve is changed
7 → the second 5 → indoor heat exchanger of four-way valve of hot 6 → main road of device expansion valve 4 → the first, 2 → compressor of four-way valve 1.
After bypass refrigerant is by bypass expansion valve 8, exchanged heat by crossing cold heat exchanger 6 and main road refrigerant, after heat exchange,
Bypass overheat cold media gas is sprayed into compressor 1.
(2) when heating, the first four-way valve 2 and the second four-way valve 5 are respectively positioned on states.
Main road refrigerant flows：1 → the first 2 → indoor heat exchanger of four-way valve of compressor 4 → the second, 5 → supercooling of four-way valve is changed
7 → the second 5 → outdoor heat exchanger of four-way valve of hot 6 → main road of device expansion valve 3 → the first, 2 → compressor of four-way valve 1.
After bypass refrigerant is by bypass expansion valve 8, exchanged heat by crossing cold heat exchanger 6 and main road refrigerant, after heat exchange,
Bypass overheat cold media gas is sprayed into compressor 1.
In the air injection enthalpy-increasing air-conditioning system provided from above-mentioned operation principle, the present invention, pass through changing for the second four-way valve 5
To function, take liquid point before throttling when only a main road expansion valve 7 need to be set to be achieved that cooling system, heat, thus may be used
See, the air injection enthalpy-increasing air-conditioning system can take into account carrying for the unattenuated and refrigerating capacity of low-temperature heating by simple system architecture
Height, compared with traditional air injection enthalpy-increasing air-conditioning system, can be such that refrigeration, the operational effect heated under two patterns has carried
Rise.
In specific practical application, it can be plate type heat exchanger to cross cold heat exchanger 6.In the present embodiment, main road refrigerant and bypass
Refrigerant is crossing countercurrent flow at cold heat exchanger 6, understands that the second four-way valve 5, which ensure that, either to exist with reference to above-mentioned operation principle
Under refrigeration mode, still in a heating mode, main road refrigerant is countercurrent flow with the bypass refrigerant after throttling, it is thus possible to increased
Added the heat transfer effect of cold heat exchanger 6, and improved the degree of superheat of bypass, be sparged into all gaseous states of refrigerant of compressor 1, meanwhile,
The degree of supercooling of main road is also improved after the heat transfer effect lifting for crossing cold heat exchanger 6 so that system capability is improved.
In specific practical application, main road expansion valve 7 can be electric expansion valve or heating power expansion valve.Similarly, bypass is swollen
Swollen valve 8 can be electric expansion valve or heating power expansion valve.
In the present embodiment, indoor heat exchanger 4 selects shell and tube exchanger, and outdoor heat exchanger 3 selects fin-tube type heat exchanger.
, can be with order that economy of the system under normal refrigerating/heating and low-temperature heating operating mode is preferably taken into account
Stop valve is set in air injection enthalpy-increasing loop, the use in air injection enthalpy-increasing loop is controlled by opening and closing cut-off valve.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
A variety of modifications to embodiment will be apparent for those skilled in the art, as defined herein general
Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention will not
It can be restricted to embodiment illustrated herein, and be to fit to consistent with features of novelty with principles disclosed herein most wide
Scope.
Claims (8)
1. a kind of air injection enthalpy-increasing air-conditioning system, including main road expansion valve (7), bypass expansion valve (8), for changing heat and freeze
The first four-way valve (2) of pattern, and the refrigerant of main circulation loop is subcooled cross cold heat exchanger (6), it is characterised in that
Also include the second four-way valve (5) being serially connected between indoor heat exchanger (4) and outdoor heat exchanger (3), second four-way valve (5)
The first valve port and the second valve port and the 3rd valve port in a conducting when, the 4th valve port and second valve port and the described 3rd
Another conducting in valve port, first valve port is connected with the indoor heat exchanger (4), the 4th valve port and the outdoor
Heat exchanger (3) is connected, and second valve port connects with one end of the main road expansion valve (7), the main road expansion valve (7) it is another
One end is connected with described one end for crossing cold heat exchanger (6), and the other end for crossing cold heat exchanger (6) connects with the 3rd valve port
Logical, one end of the bypass expansion valve (8) is connected with the cold heat exchanger (6) of crossing, and the other end of the bypass expansion valve (8) connects
It is connected between the 3rd valve port and the cold heat exchanger (6) excessively or the cold heat exchanger (6) excessively and the main road expansion valve
(7) between.
2. air injection enthalpy-increasing air-conditioning system according to claim 1, it is characterised in that the cold heat exchanger (6) of crossing is board-like
Heat exchanger.
3. air injection enthalpy-increasing air-conditioning system according to claim 2, it is characterised in that main road refrigerant is with bypass refrigerant described
Cross cold heat exchanger (6) place countercurrent flow.
4. air injection enthalpy-increasing air-conditioning system according to claim 1, it is characterised in that the main road expansion valve (7) is electronics
Expansion valve or heating power expansion valve.
5. air injection enthalpy-increasing air-conditioning system according to claim 1, it is characterised in that the bypass expansion valve (8) is electronics
Expansion valve or heating power expansion valve.
6. air injection enthalpy-increasing air-conditioning system according to claim 1, it is characterised in that the indoor heat exchanger (4) is package
Formula heat exchanger.
7. air injection enthalpy-increasing air-conditioning system according to claim 1, it is characterised in that the outdoor heat exchanger (3) is pipe wing
Formula heat exchanger.
8. the air injection enthalpy-increasing air-conditioning system according to any one in claim 1~7, it is characterised in that air injection enthalpy-increasing is returned
Stop valve is provided with road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710355906.9A CN107143953B (en) | 2017-05-19 | 2017-05-19 | A kind of air injection enthalpy-increasing air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710355906.9A CN107143953B (en) | 2017-05-19 | 2017-05-19 | A kind of air injection enthalpy-increasing air-conditioning system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107143953A true CN107143953A (en) | 2017-09-08 |
| CN107143953B CN107143953B (en) | 2019-06-14 |
Family
ID=59778212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710355906.9A Active CN107143953B (en) | 2017-05-19 | 2017-05-19 | A kind of air injection enthalpy-increasing air-conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107143953B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109591545A (en) * | 2018-10-31 | 2019-04-09 | 上海爱斯达克汽车空调***有限公司 | Gas-supplying enthalpy-increasing heat pump system, the vehicles, method with more mouthfuls of heating power expansion valves of throttling |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011185507A (en) * | 2010-03-08 | 2011-09-22 | Panasonic Corp | Refrigerating cycle device and hot water heating device including the same |
| CN105004090A (en) * | 2015-07-09 | 2015-10-28 | 广东美的暖通设备有限公司 | Multi-split air-conditioning system and supercooling and enhanced vapor injection method thereof |
| CN105066538A (en) * | 2015-07-15 | 2015-11-18 | 广东美的暖通设备有限公司 | Air supplying and enthalpy increasing method and system for air conditioner, and air conditioner |
| CN204787397U (en) * | 2015-07-10 | 2015-11-18 | 特灵空调***(中国)有限公司 | Forced air cooling cold water heat pump set |
| CN105157270A (en) * | 2015-09-24 | 2015-12-16 | 无锡同方人工环境有限公司 | Low-environment-temperature air source heat pump system with undercooling loop |
| CN205261971U (en) * | 2015-12-08 | 2016-05-25 | 三菱重工海尔(青岛)空调机有限公司 | Enhanced vapor injection air conditioning system |
| CN205482280U (en) * | 2016-03-31 | 2016-08-17 | 郑州欧纳尔冷暖科技有限公司 | Tertiary hot recovery type heat pump drying unit |
| CN106322814A (en) * | 2016-11-22 | 2017-01-11 | 广东美的暖通设备有限公司 | Air conditioning system and air conditioner |
| EP3318820A1 (en) * | 2015-07-01 | 2018-05-09 | Mitsubishi Electric Corporation | Refrigeration cycle device |
-
2017
- 2017-05-19 CN CN201710355906.9A patent/CN107143953B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011185507A (en) * | 2010-03-08 | 2011-09-22 | Panasonic Corp | Refrigerating cycle device and hot water heating device including the same |
| EP3318820A1 (en) * | 2015-07-01 | 2018-05-09 | Mitsubishi Electric Corporation | Refrigeration cycle device |
| CN105004090A (en) * | 2015-07-09 | 2015-10-28 | 广东美的暖通设备有限公司 | Multi-split air-conditioning system and supercooling and enhanced vapor injection method thereof |
| CN204787397U (en) * | 2015-07-10 | 2015-11-18 | 特灵空调***(中国)有限公司 | Forced air cooling cold water heat pump set |
| CN105066538A (en) * | 2015-07-15 | 2015-11-18 | 广东美的暖通设备有限公司 | Air supplying and enthalpy increasing method and system for air conditioner, and air conditioner |
| CN105157270A (en) * | 2015-09-24 | 2015-12-16 | 无锡同方人工环境有限公司 | Low-environment-temperature air source heat pump system with undercooling loop |
| CN205261971U (en) * | 2015-12-08 | 2016-05-25 | 三菱重工海尔(青岛)空调机有限公司 | Enhanced vapor injection air conditioning system |
| CN205482280U (en) * | 2016-03-31 | 2016-08-17 | 郑州欧纳尔冷暖科技有限公司 | Tertiary hot recovery type heat pump drying unit |
| CN106322814A (en) * | 2016-11-22 | 2017-01-11 | 广东美的暖通设备有限公司 | Air conditioning system and air conditioner |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109591545A (en) * | 2018-10-31 | 2019-04-09 | 上海爱斯达克汽车空调***有限公司 | Gas-supplying enthalpy-increasing heat pump system, the vehicles, method with more mouthfuls of heating power expansion valves of throttling |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107143953B (en) | 2019-06-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103062851B (en) | Air-conditioning system and dehumanization method thereof | |
| CN101865555A (en) | Multi-split air-conditioner capable of simultaneously refrigerating and heating | |
| CN106642416A (en) | Air conditioner system, composite condenser and operation control method and device of air conditioner system | |
| CN107178833A (en) | Heat recovery outer unit system and air conditioning system | |
| CN105020924A (en) | Air source enhanced vapor injection heat pump system | |
| CN203375758U (en) | Refrigerating cycle system | |
| CN107655233A (en) | Air conditioner system and air conditioner with same | |
| CN206094634U (en) | One drags two air conditioning system | |
| CN207214503U (en) | Air conditioner system and air conditioner with same | |
| CN205641690U (en) | Double heating type combined type air conditioner system | |
| CN106931676A (en) | Air-conditioning system and its defrosting control method | |
| CN205373120U (en) | Air conditioning system | |
| CN206488508U (en) | Head phase-transition heat-storage frost removal type low-temperature air source heat pump unit | |
| CN106524591A (en) | Handpiece phase change heat storage defrosting type low-temperature air source heat pump unit | |
| CN103528136B (en) | Fresh air handling units and control system thereof | |
| CN203443182U (en) | Air conditioner | |
| CN202928174U (en) | Water cooling unit | |
| CN208765303U (en) | air conditioning system | |
| CN204853759U (en) | It heats air conditioning system to stride critical CO2 heat pump | |
| CN207006398U (en) | Heat recovery outer unit system and air conditioning system | |
| CN206771795U (en) | Air-conditioning system | |
| CN107143953A (en) | A kind of air injection enthalpy-increasing air-conditioning system | |
| CN106996643A (en) | A kind of multifunctional heat pump water heating machine group | |
| CN204254925U (en) | Heat exchange system and air conditioner with same | |
| CN106440434A (en) | Air conditioning system and control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |