CN106885391A - A kind of air-conditioner and its control method - Google Patents
A kind of air-conditioner and its control method Download PDFInfo
- Publication number
- CN106885391A CN106885391A CN201710116465.7A CN201710116465A CN106885391A CN 106885391 A CN106885391 A CN 106885391A CN 201710116465 A CN201710116465 A CN 201710116465A CN 106885391 A CN106885391 A CN 106885391A
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- Prior art keywords
- magnetic valve
- circulation loop
- air
- conditioner
- auxiliary
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- 238000000034 method Methods 0.000 title claims description 19
- 239000003507 refrigerant Substances 0.000 claims abstract description 89
- 238000010257 thawing Methods 0.000 claims abstract description 22
- 238000005057 refrigeration Methods 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims description 48
- 230000005611 electricity Effects 0.000 claims description 11
- 238000004378 air conditioning Methods 0.000 description 9
- 238000001514 detection method Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
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- 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
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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
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- 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
- F25B47/022—Defrosting cycles hot gas defrosting
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- 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
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- 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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
-
- 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
- F25B2600/00—Control issues
- F25B2600/25—Control of 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/11—Sensor to detect if defrost is necessary
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)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention discloses a kind of air-conditioner, including the refrigeration that is followed in series to form of compressor, four-way reversing valve, indoor heat converter, restricting element and outdoor heat converter or heats the first main circulation loop；And the second auxiliary circulation loop is provided between the restricting element and four-way reversing valve；First main circulation loop, also including being connected to the 3rd magnetic valve and the 4th magnetic valve in indoor heat converter refrigerant flow, the first main circulation loop is by the 3rd magnetic valve and the 4th solenoid valve control break-make；Second auxiliary circulation loop, including the first magnetic valve and heater being sequentially connected in series, the input of the first magnetic valve are accessed in the refrigerant flow after being throttled through restricting element, and the output end of heater is accessed in the refrigerant flow of indoor heat converter outflow；Second auxiliary circulation loop is by the first solenoid valve control break-make.The present invention makes air-conditioner efficient in defrosting by increasing the second auxiliary circulation loop and heater, reduces defrosting time, improves the comfort level of air-conditioner.
Description
Technical field
The present invention relates to intelligent air condition technical field, more specifically, the present invention is a kind of air-conditioner and its control method.
Background technology
At present, when air-conditioner runs heat at low ambient temperatures, because outdoor environment temperature is very low, when typically running one section
Between post-condenser will tie full frost, at this moment air-conditioner system will make defrost treatment.During defrost (3-10 minutes),
Indoor set is closed, and air-conditioner system is in refrigeration mode, can just be again introduced into heating after defrost is fully completed
Pattern.Obviously during defrost, air-conditioner can not be provided and heated, and have a strong impact on the comfort level and satisfaction of user.
The content of the invention
To solve the problems such as existing air-conditioner comfort level is bad, defrosting time is long, the invention provides a kind of air-conditioner
And its control method, by increasing the second auxiliary circulation loop and heater, make air-conditioner efficient in defrosting, when reducing defrosting
Between, improve the comfort level of air-conditioner.
To realize above-mentioned technical purpose, the invention discloses a kind of air-conditioner, including compressor, four-way reversing valve, interior
Refrigeration or heat the first main circulation loop that heat exchanger, restricting element and outdoor heat converter are followed in series to form；With
The second auxiliary circulation loop is provided between the restricting element and four-way reversing valve；First main circulation loop, also including even
The 3rd magnetic valve and the 4th magnetic valve in the indoor heat converter refrigerant flow are connected on, first main circulation loop is by described
3rd magnetic valve and the 4th solenoid valve control break-make；The second auxiliary circulation loop, including the first electromagnetism being sequentially connected in series
Valve and heater, the input of first magnetic valve are accessed in the refrigerant flow after being throttled through restricting element, the heating
The output end of device is accessed in the refrigerant flow of indoor heat converter outflow；The second auxiliary circulation loop is by first electromagnetism
Valve controls break-make.
The refrigerant flow of air-conditioner of the present invention has two refrigerant circulation circuits, including the first main circulation loop realizes refrigeration
Or the refrigerant flow that heats and the second auxiliary circulation loop realize refrigerant flow during defrosting, when detection of air-conditioning to heating capacity declines
When needing defrosting, controller controls first magnetic valve to open, and control the 3rd magnetic valve and the 4th magnetic valve
Close, now, refrigerant shortens following for refrigerant without indoor heat exchanger, refrigerant directly through the described second auxiliary circulation loop
Loop back path, realizes quickly defrosting, further, avoid the refrigerant for flowing through the described second auxiliary circulation loop too low, auxiliary is followed described second
Heater is additionally added in loop back path, makes the refrigerant temperature for flowing through the described second auxiliary circulation loop will not be too low, so that further
Improve defrosting efficiency.
Further, the described second auxiliary circulation loop also include the second magnetic valve, the input of second magnetic valve with
The output end of heater, it is described in the refrigerant flow path of the output end access indoor heat converter outflow of second magnetic valve
Second auxiliary circulation loop is by first magnetic valve and the second solenoid valve control break-make.
Further, also including the control for controlling first main circulation loop to switch with the described second auxiliary circulation loop
Device processed, the controller and first magnetic valve, second magnetic valve, the 3rd magnetic valve and the 4th magnetic valve
Electrical connection.
Further, the heater is electric auxiliary thermal, and the electric auxiliary thermal includes electrical heating wire or PCT electricity
Auxiliary thermal and refrigerant pipe, electrical heating wire or the auxiliary thermal of PCT electricity are close to refrigerant pipe surface.
Further, the controller is electrically connected with heater.
The step of a kind of control method of air-conditioner, including air-conditioner, control method, is as follows：
Step S1:During the air-conditioner operation heating mode, detect whether the air-conditioner needs Defrost operation.
Step S2:When detecting the air-conditioner and needing Defrost operation, the controller controls the second auxiliary circulation
Loop turns on, to control the air-conditioner to open defrosting mode.
Control method of the invention when heating, when detection of air-conditioning to heating capacity decline need defrosting when, controller control
Make first magnetic valve to open, and control the 3rd magnetic valve and the 4th closed electromagnetic valve, now, refrigerant without
Indoor heat exchanger, refrigerant shortens the circulation loop of refrigerant directly through the described second auxiliary circulation loop, realizes quickly defrosting,
Further, avoiding the refrigerant for flowing through the described second auxiliary circulation loop too low, heating dress is additionally added in the described second auxiliary circulation loop
Put, make the refrigerant temperature for flowing through the described second auxiliary circulation loop will not be too low, so as to further improve defrosting efficiency.
Further, the described second auxiliary circulation loop conducting, controls first magnetic valve to open by controller, and control
3rd magnetic valve and the 4th closed electromagnetic valve.
Further, the described second auxiliary circulation loop conducting, first magnetic valve and the second electromagnetism are controlled by controller
Valve is opened, and control the 3rd magnetic valve and the 4th closed electromagnetic valve.
Further, the described second auxiliary circulation loop conducting, heating devices heat is controlled by controller.
Further, when detecting the air-conditioner and not needing Defrost operation, controller control first master
Circulation loop is turned on, to control the air-conditioner operation heating mode.
Further, also including step S3:The first main circulation loop conducting, the 3rd electromagnetism is controlled by controller
Valve and the 4th magnetic valve are opened, and control first magnetic valve and the second closed electromagnetic valve.
Beneficial effects of the present invention are：The present invention passes through to increase by the second auxiliary circulation loop, when detection of air-conditioning arrives air outlet
When leaving air temp is low, start defrosting mode, refrigerant completes circulation and heats in the second auxiliary circulation loop, and refrigerant needs not move through room
Interior heat exchanger, so as to realize defrost rapidly and efficiently.The heater can also aid in heating in low-temperature heating, so as to increase
The suction temperature and back pressure of compressor, and then raise the delivery temperature of compressor and pressure at expulsion, play it is quick plus
The effect that hot refrigerant, indoor heat exchanger are quickly heated.
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
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Structure according to these accompanying drawings obtains other accompanying drawings.
Fig. 1 is air-conditioning system refrigerant circulation flow circuit diagram of the present invention.
Fig. 2 is the refrigerant circulation flow circuit diagram of another embodiment of air-conditioning system of the present invention.
Fig. 3 is air-conditioner defrosting control method flow chart of the present invention.
The realization of the object of the invention, functional characteristics and advantage will be described further referring to the drawings in conjunction with the embodiments.
Drawing reference numeral explanation：
| Label | Title | Label | Title |
| 1 | Compressor | 2 | Four-way reversing valve |
| 3 | Outdoor heat converter | 4 | Restricting element |
| 5 | First magnetic valve | 6 | 3rd magnetic valve |
| 7 | Indoor heat converter | 8 | 4th magnetic valve |
| 9 | Second magnetic valve | 10 | Heater |
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In relative position relation, motion conditions under a certain particular pose (as shown in drawings) between each part etc. are explained, if should
When particular pose changes, then directionality indicates also correspondingly to change therewith.
In addition, it is related to the description of " first ", " second " etc. to be only used for describing purpose in the present invention, and it is not intended that referring to
Show or imply its relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, " first ", " are defined
Two " at least one this feature can be expressed or be implicitly included to feature.In addition, the technical scheme between each embodiment can
To be combined with each other, but must can be implemented as basis with those of ordinary skill in the art, when the combination of technical scheme occurs
It is conflicting or when cannot realize it will be understood that the combination of this technical scheme does not exist, also not in the protection model of application claims
Within enclosing.
As illustrated in fig. 1 and 2, a kind of air-conditioner, including compressor 1, four-way reversing valve 2, indoor heat converter 7, throttling unit
Refrigeration or heat the first main circulation loop that part 4 and outdoor heat converter 3 are followed in series to form；With in the restricting element 4
The second auxiliary circulation loop is provided between four-way reversing valve 2；Wherein, the height of the first interface of four-way reversing valve 2 and compressor 1
Pressure gas port is communicated, and second interface is communicated with outdoor heat converter 3, and the 3rd interface is communicated with indoor heat converter 7, the 4th interface
Communicated with the low pressure air suction mouthful of compressor 1.When cooling, refrigerant is flowed out from the high-pressure exhaust of compressor 1, by outdoor heat
Exchanger 3, restricting element 4 and outdoor heat converter 3, the low pressure air suction mouthful of refrigerant return to compressor 1 form the refrigerant of refrigeration
Stream；When heating, refrigerant is flowed out from the high-pressure exhaust of compressor 1, by outdoor heat converter 3, restricting element 4 and room
Outer heat-exchanger 3, the low pressure air suction mouthful of refrigerant return to compressor 1 forms the refrigerant flow for heating.
First main circulation loop, also including being connected to the 3rd magnetic valve 6 in the refrigerant flow of the indoor heat converter 7
With the 4th magnetic valve 8, first main circulation loop controls break-make by the 3rd magnetic valve 6 and the 4th magnetic valve 8；When
During refrigeration, the 3rd magnetic valve 6 and the 4th magnetic valve 8 are opened entirely, and first main circulation loop forms the cold of refrigeration
Matchmaker's stream, when defrost is needed in heating operations, the 3rd magnetic valve 6 and the contract fully of the 4th magnetic valve 8, refrigerant flow through
The second auxiliary circulation loop.
The second auxiliary circulation loop, including the first magnetic valve 5 and heater 10 being sequentially connected in series, first electromagnetism
The input of valve 5 is accessed in the refrigerant flow after being throttled through restricting element 4, and the output end of the heater 10 accesses Indoor Thermal
In the refrigerant flow of the outflow of exchanger 7；The second auxiliary circulation loop controls break-make by first magnetic valve 5；When cooling,
3rd magnetic valve 6 and the 4th magnetic valve 8 are opened entirely, and the control of the first magnetic valve 5 is closed, first major cycle
Loop forms the refrigerant flow of refrigeration；When defrost is needed in heating operations, the 3rd magnetic valve 6 and the 4th magnetic valve
8 complete closures, the control of the first magnetic valve 5 is opened, and refrigerant flows through the described second auxiliary circulation loop, and the heater 10 is
Refrigerant is heated, it is to avoid refrigerant temperature is too low, meanwhile, it is indoor heating that indoor set starts the auxiliary heat of electricity.
Air-conditioning system of the present invention has two refrigerant circulation circuits, including the first main circulation loop is realized refrigeration or heated
Refrigerant flow and the second auxiliary circulation loop realize refrigerant flow during defrosting, need to defrost when detection of air-conditioning to heating capacity declines
When, controller controls first magnetic valve 5 to open, and controls the 3rd magnetic valve 6 and the 4th magnetic valve 8 to close,
Now, without indoor heat exchanger, refrigerant shortens looping back for refrigerant to refrigerant directly through the described second auxiliary circulation loop
Road, realizes quickly defrosting, further, avoid the refrigerant for flowing through the described second auxiliary circulation loop too low, auxiliary is looped back described second
Heater 10 is additionally added in road, makes the refrigerant temperature for flowing through the described second auxiliary circulation loop will not be too low, so as to further carry
Defrosting efficiency high.
Specifically, the described second auxiliary circulation loop also include the second magnetic valve 9, the input of second magnetic valve 9 with
The output end of heater 10, in the refrigerant flow path of the output end access outflow of indoor heat converter 7 of second magnetic valve 9,
The second auxiliary circulation loop controls break-make by first magnetic valve 5 and second magnetic valve 9.Described second auxiliary loops back
Road increases the stability that second magnetic valve 9 improves refrigerant circulation circuit, when cooling, the 3rd magnetic valve 6 and described
The full opening of 4th magnetic valve 8, first magnetic valve 5 and second magnetic valve 9 control are closed, first main circulation loop
Form the refrigerant flow of refrigeration；When defrost is needed in heating operations, the 3rd magnetic valve 6 and the 4th magnetic valve 8 are complete
Closure, first magnetic valve 5 and second magnetic valve 9 control are opened, and refrigerant flows through the described second auxiliary circulation loop, and institute
Heater 10 is stated for refrigerant is heated, it is to avoid refrigerant temperature is too low, meanwhile, indoor set starts the auxiliary hot (not shown) of indoor electric
It is indoor heating.
Specifically, also including the control for controlling first main circulation loop to switch with the described second auxiliary circulation loop
Device, the controller and first magnetic valve 5, second magnetic valve 9, the 3rd magnetic valve 6 and the 4th electromagnetism
Valve 8 is electrically connected.Controller controls first magnetic valve 5, second magnetic valve 9, the 3rd magnetic valve 6 and the described 4th
The break-make of magnetic valve 8, and to coordinate and need defrost in refrigeration or heating or heating operations, for controlling refrigerant to flow to the
One main circulation loop or the second auxiliary circulation loop.
Specifically, the heater 10 is electric auxiliary thermal, and the electric auxiliary thermal includes electrical heating wire or PCT electricity
Auxiliary thermal and refrigerant pipe, electrical heating wire or the auxiliary thermal of PCT electricity are close to refrigerant pipe surface.Second is flowed in refrigerant auxiliary to follow
During loop back path, in order to avoid refrigerant temperature is too low, heater 10 is the refrigerant heating flowed through, and the efficiency that can improve defrost is carried
Height, the refrigerant after heating improves 5% to 10%.
Specifically, the controller is electrically connected with heater 10, and controller control heater 10 starts or closes,
And defrost is needed in cooperation heating operations, for controlling heater 10 to add to the refrigerant for flowing through the described second auxiliary circulation loop
Heat.
It is as follows the step of control method as shown in figure 3, a kind of control method of air-conditioner, including air-conditioner：
Step S1:During the air-conditioner operation heating mode, detect whether the air-conditioner needs Defrost operation.Detection institute
Whether need the method for Defrost operation have various, it is impossible to lift to the greatest extent if stating air-conditioner, when only lifting wherein one implementation here and for example heating, inspection
Air port is measured less than design temperature, and maintains the regular hour, illustrate that outdoor unit exchange capability of heat declines, in fact it could happen that the feelings of frosting
Condition is, it is necessary to defrost.
Step S2:When detecting the air-conditioner and needing Defrost operation, the controller controls the second auxiliary circulation
Loop turns on, to control the air-conditioner to open defrosting mode.When defrost is needed in heating operations, the 3rd magnetic valve 6
With the complete closure of the 4th magnetic valve 8, first magnetic valve 5 and second magnetic valve 9 control are opened, and refrigerant flows through described
Second auxiliary circulation loop.
Control method of the invention when heating, when detection of air-conditioning to heating capacity decline need defrosting when, controller control
Make first magnetic valve 5 to open, and control the 3rd magnetic valve 6 and the 4th magnetic valve 8 to close, now, refrigerant is not
By indoor heat exchanger, refrigerant shortens the circulation loop of refrigerant directly through the described second auxiliary circulation loop, and realization is quickly removed
Frost, further, avoiding the refrigerant for flowing through the described second auxiliary circulation loop too low, heating is additionally added in the described second auxiliary circulation loop
Device 10, makes the refrigerant temperature for flowing through the described second auxiliary circulation loop will not be too low, so as to further improve defrosting efficiency.
Specifically, the described second auxiliary circulation loop conducting, controls first magnetic valve 5 to open by controller, and control
3rd magnetic valve 6 and the 4th magnetic valve 8 are closed.Implement for example when defrost is needed in heating operations, the described 3rd
Magnetic valve 6 and the complete closure of the 4th magnetic valve 8, the control of the first magnetic valve 5 are opened, and refrigerant flows through the described second auxiliary circulation
Loop, and the heater 10 is refrigerant heating, it is to avoid refrigerant temperature is too low, meanwhile, it is indoor that indoor set starts the auxiliary heat of electricity
Heat supply.
Specifically, the described second auxiliary circulation loop conducting, the magnetic valve of first magnetic valve 5 and second is controlled by controller
9 open, and control the 3rd magnetic valve 6 and the 4th magnetic valve 8 to close.Implement for example when needing defrost in heating operations
When, the 3rd magnetic valve 6 and the complete closure of the 4th magnetic valve 8, first magnetic valve 5 and second magnetic valve 9 are controlled
System is opened, and refrigerant flows through the described second auxiliary circulation loop, and the heater 10 for refrigerant is heated, it is to avoid refrigerant temperature mistake
It is low, meanwhile, it is indoor heating that indoor set starts the auxiliary heat of electricity.
Specifically, the described second auxiliary circulation loop conducting, is heated by controller control heater 10.Is flowed in refrigerant
During two auxiliary circulation loops, in order to avoid refrigerant temperature is too low, heater 10 is the refrigerant heating flowed through, and can improve defrost
Efficiency is improved, and the refrigerant after heating improves 5% to 10%.
Specifically, when detecting the air-conditioner and not needing Defrost operation, controller control first master follow
Loop back path is turned on, to control the air-conditioner operation heating mode.Implement for example when defrost is not needed in heating operations, it is described
3rd magnetic valve 6 and the full opening of the 4th magnetic valve 8, first magnetic valve 5 and second magnetic valve 9 control fully closed
Close, refrigerant flows through the described first auxiliary circulation loop, air-conditioning recovers normally to heat control.
Specifically, also including step S3:The first main circulation loop conducting, the 3rd magnetic valve is controlled by controller
6 and the 4th magnetic valve 8 open, and control the magnetic valve 9 of the first magnetic valve 5 and second to close.Implement for example when heating
During when needing defrost, the 3rd magnetic valve 6 and the complete closure of the 4th magnetic valve 8, first magnetic valve 5 and described
The control of second magnetic valve 9 is opened, and refrigerant flows through the described second auxiliary circulation loop, and the heater 10 for refrigerant is heated, and keeps away
Exempt from refrigerant temperature too low, meanwhile, it is indoor heating that indoor set starts the auxiliary heat of electricity.
Claims (11)
1. a kind of air-conditioner, it is characterised in that：Including compressor, four-way reversing valve, indoor heat converter, restricting element and outdoor
Refrigeration or heat the first main circulation loop that heat exchanger is followed in series to form；With in the restricting element and four-way reversing valve
Between be provided with the second auxiliary circulation loop；
First main circulation loop, also including being connected to the 3rd magnetic valve and the 4th in the indoor heat converter refrigerant flow
Magnetic valve, first main circulation loop is by the 3rd magnetic valve and the 4th solenoid valve control break-make；
The second auxiliary circulation loop, including the first magnetic valve and heater being sequentially connected in series, first magnetic valve it is defeated
Enter to terminate in the refrigerant flow after being throttled through restricting element, the output end of the heater accesses indoor heat converter outflow
Refrigerant flow in；The second auxiliary circulation loop is by the first solenoid valve control break-make.
2. air-conditioner according to claim 1, it is characterised in that the second auxiliary circulation loop also includes the second electromagnetism
Valve, the input of second magnetic valve and the output end of heater, the output end of second magnetic valve access Indoor Thermal
In the refrigerant flow path of exchanger outflow, the second auxiliary circulation loop is by first magnetic valve and second solenoid valve control
Break-make.
3. air-conditioner according to claim 2, it is characterised in that also including for control first main circulation loop with
The controller of the second auxiliary circulation loop switching, it is the controller and first magnetic valve, second magnetic valve, described
3rd magnetic valve and the 4th magnetic valve are electrically connected.
4. air-conditioner according to claim 3, it is characterised in that the heater is electric auxiliary thermal, the electricity is auxiliary
Thermal includes electrical heating wire or the auxiliary thermal of PCT electricity and refrigerant pipe, and electrical heating wire or the auxiliary thermal of PCT electricity are close to cold
Matchmaker's pipe surface.
5. air-conditioner according to claim 4, it is characterised in that the controller is electrically connected with heater.
6. a kind of control method for controlling any one of claim 1 to 5 air-conditioner, it is characterised in that：The step of control method
It is rapid as follows：
Step S1:During the air-conditioner operation heating mode, detect whether the air-conditioner needs Defrost operation；
Step S2:When detecting the air-conditioner and needing Defrost operation, the controller controls the second auxiliary circulation loop
Conducting, to control the air-conditioner to open defrosting mode.
7. the control method of air-conditioner according to claim 6, it is characterised in that the second auxiliary circulation loop conducting,
First magnetic valve is controlled to open by controller, and control the 3rd magnetic valve and the 4th closed electromagnetic valve.
8. the control method of air-conditioner according to claim 6, it is characterised in that the second auxiliary circulation loop conducting,
First magnetic valve and the second magnetic valve is controlled to open by controller, and control the 3rd magnetic valve and the 4th electromagnetism
Valve is closed.
9. the control method of air-conditioner according to claim 6, it is characterised in that the second auxiliary circulation loop conducting,
Heating devices heat is controlled by controller.
10. the control method of air-conditioner according to claim 6, it is characterised in that be not required to the air-conditioner is detected
When wanting Defrost operation, the controller controls the first main circulation loop conducting, to control the air-conditioner operation to heat mould
Formula.
The control method of 11. air-conditioners according to claim 10, it is characterised in that also including step S3:Described first
Main circulation loop is turned on, and controls the 3rd magnetic valve and the 4th magnetic valve to open by controller, and control described first
Magnetic valve and the second closed electromagnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710116465.7A CN106885391A (en) | 2017-02-28 | 2017-02-28 | A kind of air-conditioner and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710116465.7A CN106885391A (en) | 2017-02-28 | 2017-02-28 | A kind of air-conditioner and its control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106885391A true CN106885391A (en) | 2017-06-23 |
Family
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110411084A (en) * | 2019-08-22 | 2019-11-05 | 宁波奥克斯电气股份有限公司 | A kind of defroster not influencing room temperature, control method and air conditioner |
| CN110836466A (en) * | 2018-08-17 | 2020-02-25 | 青岛海尔空调器有限总公司 | Defrosting control method for fixed-frequency air conditioner |
| CN110836467A (en) * | 2018-08-17 | 2020-02-25 | 青岛海尔空调器有限总公司 | Defrosting control method for fixed-frequency air conditioner |
| CN112611074A (en) * | 2020-11-30 | 2021-04-06 | 青岛海尔空调电子有限公司 | Air conditioning system and defrosting control method, storage medium and control device thereof |
| CN112611073A (en) * | 2020-11-30 | 2021-04-06 | 青岛海尔空调电子有限公司 | Air conditioning system and defrosting control method, storage medium and control device thereof |
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| CN206514567U (en) * | 2017-02-28 | 2017-09-22 | 广东美的制冷设备有限公司 | A kind of air conditioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110836466A (en) * | 2018-08-17 | 2020-02-25 | 青岛海尔空调器有限总公司 | Defrosting control method for fixed-frequency air conditioner |
| CN110836467A (en) * | 2018-08-17 | 2020-02-25 | 青岛海尔空调器有限总公司 | Defrosting control method for fixed-frequency air conditioner |
| CN110836466B (en) * | 2018-08-17 | 2021-09-24 | 青岛海尔空调器有限总公司 | Defrosting control method for fixed-frequency air conditioner |
| CN110411084A (en) * | 2019-08-22 | 2019-11-05 | 宁波奥克斯电气股份有限公司 | A kind of defroster not influencing room temperature, control method and air conditioner |
| CN112611074A (en) * | 2020-11-30 | 2021-04-06 | 青岛海尔空调电子有限公司 | Air conditioning system and defrosting control method, storage medium and control device thereof |
| CN112611073A (en) * | 2020-11-30 | 2021-04-06 | 青岛海尔空调电子有限公司 | Air conditioning system and defrosting control method, storage medium and control device thereof |
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