CN109442788A - Defrosting method of air conditioner and air conditioner - Google Patents
Defrosting method of air conditioner and air conditioner Download PDFInfo
- Publication number
- CN109442788A CN109442788A CN201811169064.9A CN201811169064A CN109442788A CN 109442788 A CN109442788 A CN 109442788A CN 201811169064 A CN201811169064 A CN 201811169064A CN 109442788 A CN109442788 A CN 109442788A
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- air
- indoor unit
- conditioning
- compressor
- pipeline
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000010257 thawing Methods 0.000 title claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 22
- 238000004378 air conditioning Methods 0.000 claims description 67
- 239000003507 refrigerant Substances 0.000 claims description 45
- 238000005057 refrigeration Methods 0.000 claims description 27
- 239000007788 liquid Substances 0.000 claims description 20
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 230000006698 induction Effects 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 22
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000037351 starvation Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- 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
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
-
- 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
-
- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a defrosting method of an air conditioner and the air conditioner, wherein the air conditioner comprises a compressor, a four-way valve, an indoor unit and an outdoor unit which are connected through pipelines to form a refrigerating and heating loop; the induction port of compressor is connected with the first port of cross valve, and the one end of indoor set is connected with the second port of cross valve, and the other end of indoor set is connected with the one end of off-premises station, and the other end of off-premises station is connected with the third port of cross valve, and the gas vent of compressor is connected with the fourth port of cross valve, still includes: and a first end of the bypass pipeline is connected to a pipeline between the indoor unit and the outdoor unit, a second end of the bypass pipeline is connected to a pipeline between the indoor unit and an exhaust port of the compressor, and a first control valve is arranged on the bypass pipeline. Therefore, when the air conditioner is used for defrosting, the indoor temperature is not reduced, the four-way valve is not required to be converted, the user experience is improved, and the service life of the four-way valve is prolonged.
Description
Technical field
The present invention relates to field of air conditioning, the in particular to defrosting method and air-conditioning of air-conditioning.
Background technique
In the prior art, when air-conditioning is run in winter to be heated, the outdoor unit of air-conditioning tends to frosting, in order to
Defrost is carried out to outdoor unit, user is needed first to shut down, then converting operational mode is heating mode, then to outdoor unit
Frost is then converted to heating mode after defrost, this process needs four-way valve conversion twice, time-consuming and laborious, and is carrying out
When defrost, indoor unit is in refrigerating state, reduces room temperature.
Therefore, it avoids reducing room temperature when air-conditioning carries out defrost, improves user experience, be that this field is urgently to be resolved
Problem.
Summary of the invention
The present invention provides a kind of defrosting method of air-conditioning and air-conditioning, avoid reducing Indoor Temperature when air-conditioning carries out defrost
Degree improves user experience.
To solve the above-mentioned problems, as one aspect of the present invention, a kind of air-conditioning is provided, the air-conditioning includes passing through
Piping connection constitutes compressor, four-way valve, indoor unit and the outdoor unit of refrigeration and heating circuit；The air entry of the compressor with
The first port of the four-way valve is connected, and one end of the indoor unit is connected with the second port of the four-way valve, described
The other end of indoor unit is connected with one end of the outdoor unit, the third end of the other end of the outdoor unit and the four-way valve
Mouth is connected, and the exhaust outlet of the compressor is connected with the 4th port of the four-way valve, further includes:
Bypass line, the first end of the bypass line are connected to the pipeline between the indoor unit and the outdoor unit
On, the second end of the bypass line is connected on the pipeline between the indoor unit and the exhaust outlet of the compressor, described
The first control valve is provided on bypass line.
Optionally, the second control valve is provided on the pipeline between the indoor unit and four-way valve；
Second control valve is located between the second end and the indoor unit of the bypass line.
Optionally, further includes: oil eliminator；
The exhaust outlet of the compressor is connected with the entrance of the oil eliminator, the outlet of the oil eliminator with it is described
The first port of four-way valve is connected；
The oil return opening of the oil eliminator is connected with the air entry of the compressor (1).
Optionally, further includes: gas-liquid separator；
The air entry of the compressor is connected with the outlet of gas-liquid separator, the entrance of the gas-liquid separator with it is described
The second port of four-way valve is connected.
Optionally, first throttling device is provided on the connecting line of the outdoor unit and the indoor unit；
The first throttling device is located between the first end and the indoor unit of the bypass line.
Optionally, second throttling device is provided on the connecting line of the outdoor unit and the indoor unit；
The second throttling device is located between the first end and the indoor unit of the bypass line.
Optionally, further includes: heat sink, for absorbing from the outdoor unit when the air-conditioning is in refrigeration mode
Flow to the heat of the refrigerant of indoor unit.
Optionally, the heat sink includes: refrigeration pipeline and the third throttling set that is arranged on the refrigeration pipeline,
Pipeline between the entrance of the refrigeration pipeline and the indoor unit and outdoor unit is connected, the outlet of the refrigeration pipeline and institute
The air entry for stating compressor is connected；At least partly pipeline between the third throttling set and refrigeration pipeline outlet, with
Pipeline between the indoor unit and the outdoor unit is arranged side by side.
The application also proposes a kind of defrosting method of air-conditioning, the described in any item air-conditionings proposed for the application, comprising:
When air-conditioning is in heating mode, first control valve is opened, so that refrigerant flows into the room through bypass line
Outer machine.
Optionally, when the air-conditioning includes the second control valve, further includes:
Close second control valve.
Optionally, when the air-conditioning includes second throttling device, further includes:
Close the second throttling device.
The application proposes the defrosting method and air-conditioning of a kind of air-conditioning, and bypass line is arranged, air-conditioning is not being switched
In the case where operational mode, it directly is converted into defrost pattern from heating mode, to not reduce interior when air-conditioning carries out defrost
Temperature had not only improved user experience but also had extended the service life of four-way valve without converting four-way valve.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of air-conditioning in the embodiment of the present invention.
Appended drawing reference in figure: 1, compressor；2, four-way valve；3, indoor unit；4, outdoor unit；5, bypass line；6, the first control
Valve processed；7, the second control valve；8, oil eliminator；9, gas-liquid separator；10, first throttling device；11, air entry；12, it is vented
Mouthful；13, second throttling device；14, refrigeration pipeline；15, third throttling set；16, the first branch；17, second branch；18,
Three branches；19, the 4th branch.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the specific embodiment of the invention and
Technical solution of the present invention is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the present invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so as to the embodiment of the present invention described herein can in addition to illustrating herein or
Sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that cover
Covering non-exclusive includes to be not necessarily limited to for example, containing the process, method of series of steps or module, device, product or electric appliance
Step or module those of is clearly listed, but may include be not clearly listed or for these process, methods, product
Or other steps or module that electric appliance is intrinsic.
Fig. 1 is please referred to, the application proposes that a kind of air-conditioning, the air-conditioning include being made up of refrigeration piping connection and heating back
Compressor 1, four-way valve 2, indoor unit 3 and the outdoor unit 4 on road；The first of the air entry 11 of the compressor 1 and the four-way valve 2
Port is connected, and one end of the indoor unit 3 is connected with the second port of the four-way valve 2, the other end of the indoor unit 3
It is connected with one end of the outdoor unit 4, the other end of the outdoor unit 4 is connected with the third port of the four-way valve 2, institute
The exhaust outlet 12 for stating compressor 1 is connected with the 4th port of the four-way valve 2, which is characterized in that further include:
Bypass line 5, the first end of the bypass line 5 are connected to the pipe between the indoor unit 3 and the outdoor unit 4
On the road, the second end of the bypass line 5 is connected to the pipeline between the indoor unit 3 and the exhaust outlet 12 of the compressor 1
On, the first control valve 6 is provided on the bypass line 5.
Specifically, the connection type in each port of four-way valve is same as the prior art, to control the flowing side of refrigerant
To.First control valve can be solenoid valve or any existing switch, and the flow of refrigerant can be controlled by the first control valve
Size, the second end of bypass line can connect on the pipeline between four-way valve and indoor unit, in general, in air-conditioning
When in heating mode, the refrigerant that compressor generates flows to indoor unit by four-way valve, flows to outdoor unit after machine heat release indoors,
Four-way valve is returned, then flows to compressor air suction mouth from four-way valve.In the application, since the exhaust outlet in compressor is provided with
Bypass line, so the part refrigerant for the high temperature and pressure that compressor generates can pass through bypass when air-conditioning is in heating mode
Pipeline flows directly into outdoor unit, without carrying out heat release by indoor unit.Compared with prior art, the air-conditioning that the application proposes can
To carry out defrost to outdoor unit in a heating mode, be converted to refrigeration mode from heating mode without user, four-way valve be not necessarily into
Row commutation, can save user time and protect four-way valve, extend the service life of four-way valve.Simultaneously as will not be empty
The operational mode of tune is converted into refrigeration mode, therefore, machine will not blow a cold wind over indoors, without anti-cold wind indoors, and will not
Room temperature is reduced, can control a part of refrigerant by indoor heat release, a part of refrigerant flows directly into outdoor unit defrost, thus
It realizes and realizes outdoor defrost while heating indoors, the experience of indoor user will not be reduced.
Preferably, in some alternative embodiments, is provided on the pipeline between the indoor unit 3 and four-way valve 2
Two control valves 7；Second control valve 7 is located between the second end and the indoor unit 3 of the bypass line 5.In this implementation
In example, it is provided with the second control valve 7, can be solenoid valve or other existing control switches, can be used for adjusting and flow to room
The flow of the refrigerant of interior machine can control when the outdoor unit frosting of air-conditioning is excessively serious when air-conditioning is in heating mode
Two control valves make refrigerant not flow to indoor unit, and the high temperature and pressure refrigerant that compressor generates all flows directly into room through bypass line
Outer machine, then compressor air suction mouth is flowed into from outdoor unit through four-way valve, to improve defrost efficiency.
Preferably, in some alternative embodiments, the air-conditioning that the application proposes, further includes: oil eliminator 8；The pressure
The exhaust outlet 12 of contracting machine 1 is connected with the entrance of the oil eliminator 8, outlet and the four-way valve 2 of the oil eliminator 8
First port is connected；The oil return opening of the oil eliminator 8 is connected with the air entry of the compressor 1.Optionally, oil separation
Pipeline between the oil return opening of device and the air entry of compressor includes oil return capillary.Optionally, the oil return opening of oil eliminator with
Pipeline between the air entry of compressor includes two branches in parallel, the respectively first branch 16 and second branch 17, and first
Branch road is provided with oil return capillary, is provided with control valve in second branch.The profit in refrigerant can be recycled using oil eliminator
Lubricating oil, to prevent compressor from oil starvation problem occur.
Preferably, in some alternative embodiments, air-conditioning further include: gas-liquid separator 9；The air-breathing of the compressor 1
Mouth is connected with the outlet of gas-liquid separator 9, and the entrance of the gas-liquid separator 9 is connected with the second port of the four-way valve 2
It connects.Gas-liquid separator separates the liquid in refrigerant, so that all gas of the refrigerant for returning to compressor, thus anti-
Only there is liquid hammer problem in compressor.Optionally, air-conditioning further includes third branch 18, and the both ends of the third branch 18 are separately connected
The entrance of gas-liquid separator and the transfiguration mouth of compressor, third branch road are provided with low-voltage solenoid valve, and optionally, air-conditioning further includes
The both ends of 4th branch 19, the 4th branch are separately connected transfiguration mouth and the outlet of oil eliminator of compressor, the 4th branch
On be provided with high-pressure frequency-conversion valve, optionally, compressor is positive displacement compressor, and third branch can be set as can only be from gas-liquid separator
Transfiguration mouth one end one-way conduction from entrance one end to compressor, can be set the 4th branch be can only be from the transfiguration mouth of compressor
One end one-way conduction from one end to oil eliminator, to prevent that compressor internal pressure is insufficient or pressure is excessive, when insufficient pressure
Refrigerant is quickly sucked from third branch 18, and refrigerant is quickly discharged by the 4th branch 19 when pressure is excessive.
Preferably, in some alternative embodiments, it is arranged on the outdoor unit 4 and the connecting line of the indoor unit 3
There is first throttling device 10；The first throttling device 10 be located at the bypass line 5 first end and the indoor unit 3 it
Between.First throttling device can be located in indoor unit, can be expansion valve, for changing the pressure of refrigerant to change refrigerant
Evaporating temperature.So that the refrigerant of the high pressure low temperature machine evaporation endothermic indoors under refrigerating state.
Preferably, in some optional embodiments, it is provided on the outdoor unit 4 and the connecting line of the indoor unit 3
Second throttling device 13；The second throttling device 13 is located between the first end and the indoor unit 3 of the bypass line 5.
Second throttling device can be expansion valve, such as electric expansion valve, be also possible to the switch of other control cold medium fluxes, in air-conditioning
When in heating mode, usual second throttling device is in the open state, when needing to carry out defrost to outdoor unit, can open
First control valve, closing second throttling device optionally can also close the second control valve, so that refrigerant will not be to indoor unit
Flowing, but directly flowed to outdoor unit.
Preferably, in some alternative embodiments, the air-conditioning that the application proposes, further includes: heat sink, in institute
State air-conditioning it is in refrigeration mode when, absorb flowed to from the outdoor unit 4 indoor unit 3 refrigerant heat.Optionally, the heat absorption
Device includes: refrigeration pipeline 14 and the third throttling set 15 that is arranged on the refrigeration pipeline, and the refrigeration pipeline 14 enters
Mouth is connected with the pipeline between the indoor unit 3 and outdoor unit 4, outlet and the compressor 1 of the refrigeration pipeline 14
Air entry 11 is connected；At least partly pipeline between the third throttling set and refrigeration pipeline outlet, with the interior
Pipeline between machine 3 and the outdoor unit 4 is arranged side by side.Fig. 1 is please referred to, when air-conditioning is in refrigeration mode, closes the first control
Valve 6 processed, the refrigerant of exhaust outlet of compressor outflow first pass through four-way valve and flow to outdoor unit, become the cold of low temperature in outdoor unit heat release
The refrigerant of matchmaker, outdoor unit are flowed to indoor unit, and for refrigerant at the inlet of runner refrigeration pipeline, part refrigerant flows through refrigerator pipes
Road, third throttling set 15 can be expansion valve, and refrigerant vaporization heat absorption, absorbs outdoor unit and indoor unit after expansion valve expands
The heat of refrigerant in connecting line, so that the heat for flowing to the refrigerant of indoor unit is further decreased, to mention in cooling mode
High user experience.
The application also proposes a kind of defrosting method of air-conditioning, the described in any item air-conditionings proposed for the application, comprising:
When air-conditioning is in heating mode, first control valve 6 is opened, so that refrigerant flows into the outdoor unit 4 through bypass line 5.
Fig. 1 is please referred to, in heating mode, the refrigerant of the part high temperature and pressure of exhaust outlet of compressor outflow passes through bypass pipe
Road 5 flows into outdoor unit 4 to carry out defrost to outdoor unit, and refrigerant flows to four-way valve from outdoor unit again, flows to and compresses from four-way valve
The air entry of machine.After other refrigerants of exhaust outlet of compressor outflow can flow to indoor unit, then outdoor unit heat release through four-way valve, then
Outdoor unit is flowed to from indoor unit, then flows to four-way valve from outdoor unit, returns to compressor air suction mouth from four-way valve.
Optionally, when the air-conditioning includes the second control valve 7, further includes: close second control valve 7.It presses at this time
The refrigerant that contracting machine generates will not flow to indoor unit, but be directly over bypass line and flow to outdoor unit.Optionally, when air-conditioning includes
When second throttling device, further includes: close the second throttling device 13.Refrigerant flows to outdoor unit through bypass line at this time, together
Refrigerant heat exchange in pipeline between Shi Buhui and second throttling device and indoor unit, improves defrost efficiency.
In order to better illustrate the application proposition air-conditioning, below in conjunction with the application propose air-conditioning operational mode to it
The course of work is illustrated, and please refers to Fig. 1, for the air-conditioning that the application proposes, when running in cooling mode, compressor 1
Exhaust outlet 12 be vented, the gaseous coolant of high temperature and pressure passes through oil eliminator 8, and the heat exchange of outdoor unit 4 is flowed at four-way valve 2
Condenser under device, that is, refrigerating state, by exchanging heat with outdoor air, gaseous coolant is converted to liquid refrigerants, and second
Control valve 7 is opened, and the first control valve 6 is closed, and is flowed through as the main electric expansion valve of second throttling device 13 and is filled as heat absorption
The subcooler set enters indoor unit from minor valve, makees in the throttling of the interior machine electric expansion valve as first throttling device 10
Under, refrigerant becomes the gaseous state of low-temp low-pressure, exchanges heat under interior fan action with room air, i.e., in evaporator refrigeration, then
Excessive valve leads to four-way valve 2 and returns to gas-liquid separator 9, returns to compressor air suction mouth, completes a refrigerative circle system.
In a heating mode, four-way valve commutates, and the second control valve 7 is opened, and the first control valve 6 is closed, the gas of high temperature and pressure
State refrigerant flows directly into indoor unit at four-way valve, achievees the purpose that heating to room air heat exchange, indoor unit becomes cold at this time
Condenser, then the refrigerant of liquid passes through minor valve, and at the main electric expansion valve as second throttling device 13 then throttling exists
The evaporation of outdoor unit 4 absorbs heat and becomes gaseous state, then returns to gas-liquid separator 9 by four-way valve 2, it is complete to return to compressor air suction mouth
At entire circulation.When needing to defrost, for refrigerant after compressor discharge, four-way valve is in the connected state of heating mode
State, the second control valve 7 is closed at this time, and the first control valve 6 is opened, and refrigerant passes through the first control valve 6 from four-way valve 2, as second
The main electric expansion valve of throttling set 13 closes entirely, and refrigerant exchanges heat in outdoor pusher side, and the refrigerant of high temperature and pressure adds to outside heat exchanger
Heat achievees the purpose that defrosting, then returns to gas-liquid separator 9 by four-way valve 2, and the air entry 11 for being then return to compressor is completed
Entire circulation.
The application proposes the defrosting method and air-conditioning of a kind of air-conditioning, and bypass line is arranged, air-conditioning is not being switched
In the case where operational mode, it directly is converted into defrost pattern from heating mode, to not reduce interior when air-conditioning carries out defrost
Temperature had not only improved user experience but also had extended the service life of four-way valve without converting four-way valve.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (11)
1. a kind of air-conditioning, the air-conditioning includes compressor (1), the four-way valve that refrigeration and heating circuit are made up of piping connection
(2), indoor unit (3) and outdoor unit (4)；The first port phase of the air entry (11) and the four-way valve (2) of the compressor (1)
Connection, one end of the indoor unit (3) are connected with the second port of the four-way valve (2), the other end of the indoor unit (3)
It is connected with one end of the outdoor unit (4), the third port phase of the other end and the four-way valve (2) of the outdoor unit (4)
Connection, the exhaust outlet (12) of the compressor (1) are connected with the 4th port of the four-way valve (2), which is characterized in that also wrap
It includes:
The first end of bypass line (5), the bypass line (5) is connected between the indoor unit (3) and the outdoor unit (4)
Pipeline on, the second end of the bypass line (5) is connected to the exhaust outlet of the indoor unit (3) Yu the compressor (1)
(12) on the pipeline between, the first control valve (6) are provided on the bypass line (5).
2. air-conditioning according to claim 1, which is characterized in that
The second control valve (7) are provided on pipeline between the indoor unit (3) and four-way valve (2)；
Second control valve (7) is located between the second end and the indoor unit (3) of the bypass line (5).
3. -2 described in any item air-conditionings according to claim 1, which is characterized in that further include: oil eliminator (8)；
The exhaust outlet (12) of the compressor (1) is connected with the entrance of the oil eliminator (8), the oil eliminator (8)
Outlet is connected with the first port of the four-way valve (2)；
The oil return opening of the oil eliminator (8) is connected with the air entry of the compressor (1).
4. air-conditioning according to claim 1-3, which is characterized in that further include: gas-liquid separator (9)；
The air entry of the compressor (1) is connected with the outlet of gas-liquid separator (9), the entrance of the gas-liquid separator (9)
It is connected with the second port of the four-way valve (2).
5. air-conditioning according to claim 1-4, which is characterized in that
First throttling device (10) are provided on the connecting line of the outdoor unit (4) and the indoor unit (3)；
The first throttling device (10) is located between the first end and the indoor unit (3) of the bypass line (5).
6. air-conditioning according to claim 1-5, which is characterized in that
Second throttling device (13) are provided on the connecting line of the outdoor unit (4) and the indoor unit (3)；
The second throttling device (13) is located between the first end and the indoor unit (3) of the bypass line (5).
7. air-conditioning according to claim 1-6, which is characterized in that further include: heat sink, in the sky
When adjusting in refrigeration mode, the heat that the refrigerant of indoor unit (3) is flowed to from the outdoor unit (4) is absorbed.
8. air-conditioning according to claim 1-6, which is characterized in that the heat sink includes:
Refrigeration pipeline (14) and the third throttling set (15) being arranged on the refrigeration pipeline, refrigeration pipeline (14) enter
Mouth is connected with the pipeline between the indoor unit (3) and outdoor unit (4), the outlet and the compression of the refrigeration pipeline (14)
The air entry (11) of machine (1) is connected；At least partly pipeline between the third throttling set and refrigeration pipeline outlet, with
Pipeline between the indoor unit (3) and the outdoor unit (4) is arranged side by side.
9. a kind of defrosting method of air-conditioning, for such as the described in any item air-conditionings of claim 1-8 characterized by comprising
When air-conditioning is in heating mode, first control valve (6) is opened, so that refrigerant is through described in bypass line (5) inflow
Outdoor unit (4).
10. the defrosting method of air-conditioning according to claim 9, which is characterized in that when the air-conditioning includes the second control valve
(7) when, further includes:
Close second control valve (7).
11. according to the defrosting method of the described in any item air-conditionings of claim 9 or 10, which is characterized in that when the air-conditioning includes
When second throttling device, further includes:
Close the second throttling device (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811169064.9A CN109442788B (en) | 2018-10-08 | 2018-10-08 | Defrosting method of air conditioner and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811169064.9A CN109442788B (en) | 2018-10-08 | 2018-10-08 | Defrosting method of air conditioner and air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109442788A true CN109442788A (en) | 2019-03-08 |
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| CN110645746A (en) * | 2019-10-23 | 2020-01-03 | 珠海格力电器股份有限公司 | Continuous heating control system and method and air conditioning equipment |
| CN110762757A (en) * | 2019-11-06 | 2020-02-07 | 青岛海尔空调电子有限公司 | Air conditioning system and control method thereof |
| CN110836417A (en) * | 2019-11-18 | 2020-02-25 | 珠海格力电器股份有限公司 | Air conditioner and air conditioner control method |
| CN111288694A (en) * | 2019-10-23 | 2020-06-16 | 珠海格力电器股份有限公司 | Air conditioner capable of continuously heating and control method thereof |
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