CN106871345B - Do not shut down defrosting system and air conditioner - Google Patents

Do not shut down defrosting system and air conditioner Download PDF

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Publication number
CN106871345B
CN106871345B CN201710065365.6A CN201710065365A CN106871345B CN 106871345 B CN106871345 B CN 106871345B CN 201710065365 A CN201710065365 A CN 201710065365A CN 106871345 B CN106871345 B CN 106871345B
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interface
heat exchanger
valve
way valve
compressor
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CN106871345A (en
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谭成斌
吴加生
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Midea Group Co Ltd
Handan Midea Air Conditioning Equipment Co Ltd
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Midea Group Co Ltd
Handan Midea Air Conditioning Equipment Co Ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/30Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/30Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/41Defrosting; Preventing freezing
    • F24F11/42Defrosting; Preventing freezing of outdoor units

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Signal Processing (AREA)
  • Air Conditioning Control Device (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)

Abstract

The present invention provides one kind not to shut down defrosting system and air conditioner.Wherein, a kind of not shut down defrosting system, comprising: compressor, the first four-way valve, the second four-way valve, the first triple valve, the second triple valve, the first outdoor heat exchanger, the second outdoor heat exchanger, indoor heat exchanger, first throttling device, second throttling device.According to the technical solution of the present invention, outdoor heat exchanger consists of two parts, the flow direction of refrigerant is controlled by a four-way valve and a triple valve respectively, after outdoor heat exchanger frosting, by way of to the two outdoor heat exchangers in turn defrost, compressor is realized not shut down, indoor unit continuously heating, greatly improve air-conditioning heating operational efficiency, to promote the comfort of air-conditioning heating, the problem of effectively avoiding the occurrence of the major electrical equipments part frequent start-stop such as compressor simultaneously, accelerate defrost speed, to have the function that energy saving, advantageously reduce the failure rate of the major electrical equipments part such as compressor, promote user experience.

Description

Do not shut down defrosting system and air conditioner
Technical field
The present invention relates to air-conditioning technical fields, do not shut down defrosting system in particular to one kind, further relate to a kind of air-conditioning Device.
Background technique
Currently, the Defrost mode that heat pump (air-conditioning) system generallys use are as follows: compressor shutdown, then four-way valve commutates, then Start compressor defrosting.Its specific defrosting process are as follows: enter defrosting mode and --- stop compressor --- four-way valve commutation --- --- stopping compressor, --- --- starting compressor heating --- anti-cold wind --- terminates for four-way valve commutation for starting compressor defrosting The bring that defrosts is influenced, is normally heated.This Defrost mode has the following disadvantages:
One, a defrosting cycle need start and stop compressor 2 times, and starting energy consumption is high, impact greatly to power grid, frequent start-stop can mention The failure rate of high compressor.
Secondly, the commutation of start/stop of compressor, four-way valve about need 5 minutes, entire defrosting process about need 12 minutes with On, severe condition is such as encountered, defrosting time can be longer, and interior is that no heating capacity exports during defrosting, this The heating effect of heat pump can be seriously affected, heating capacity is reduced, reduces the comfort of air-conditioning.
Therefore, how one kind is provided and does not shut down defrosting system, becomes a technical problem to be solved urgently.
Summary of the invention
The present invention is directed to solve at least one of the technical problems existing in the prior art or related technologies.
For this purpose, not shutting down defrosting system an object of the present invention is to provide a kind of.
It is another object of the present invention to propose a kind of air conditioner.
In view of this, the invention proposes one kind not to shut down defrosting system, it is used for air conditioner, this not to shut down defrosting system packet Include: compressor, the first four-way valve, the second four-way valve, the first triple valve, the second triple valve, the first outdoor heat exchanger, outside second Room Heat exchanger, indoor heat exchanger, first throttling device, second throttling device, wherein the exhaust outlet of compressor is connected to the first four-way The D interface of the D interface of valve and the second four-way valve;The C interface of first four-way valve is connected to the first outdoor heat exchanger, the first four-way valve E interface be connected to the first interface of the first triple valve, the S interface of the first four-way valve is connected to the air entry of compressor;Second The C interface of four-way valve is connected to the second outdoor heat exchanger, and what the E interface of the second four-way valve was connected to the second triple valve first connects Mouthful, the S interface of the second four-way valve is connected to the air entry of compressor;The second interface of first triple valve is connected to the second four-way valve E interface, the third interface of the first triple valve is connected to indoor heat exchanger;The second interface of second triple valve is connected to the one or four The third interface of the E interface of port valve, the second triple valve is connected to indoor heat exchanger;First outdoor heat exchanger is connected to first throttle Device;Second outdoor heat exchanger is connected to second throttling device;First throttling device and second throttling device are connected to interior and change Hot device.
According to the present invention not shut down defrosting system, outdoor heat exchanger is by the first outdoor heat exchanger and the second outdoor heat exchange Device two parts composition, each part control the flow direction of refrigerant by a four-way valve and a triple valve respectively, so that system The operating mode of the flow direction matching air conditioner of cryogen.After outdoor heat exchanger frosting, by the first outdoor heat exchanger and second Outdoor heat exchanger carries out the mode of defrost in turn, realize compressor do not shut down, the purpose of indoor unit continuously heating, greatly mention High air-conditioning heating operational efficiency, to promote the comfort of air-conditioning heating, while effectively avoiding the occurrence of the main electricity such as compressor The problem of device frequent start-stop, accelerates defrost speed, to have the function that energy saving, it is main to advantageously reduce compressor etc. The failure rate of electrical part is wanted, and then improves the reliability of the major electrical equipments parts such as compressor, promotes user experience.
In addition, above-mentioned according to the present invention do not shut down defrosting system, can also have the following additional technical features:
In the above-mentioned technical solutions, it is preferable that first throttling device and second throttling device include it is following any one of at least Or combinations thereof: electric expansion valve, heating power expansion valve, capillary, spool.
In the technical scheme, the refrigerant in pipeline is saved by first throttling device and second throttling device Stream can become high-temperature high-pressure refrigerant low-temperature low-pressure refrigerant, and the flow of refrigerant is effectively adjusted while throttling, Control the degree of superheat of refrigerant, thus be conducive to it is quick, be reasonably distributed refrigerant, stablize system, it is energy saving, improve empty Device working efficiency is adjusted, the use reliability of air conditioner is promoted.
It should be appreciated by those skilled in the art that first throttling device and second throttling device include but is not limited to it is following at least Any one or combinations thereof: electric expansion valve, heating power expansion valve, capillary, spool.
In any of the above-described technical solution, it is preferable that air conditioner is heat pump air conditioner.
In the technical scheme, it should be appreciated by those skilled in the art that air conditioner is heat pump air conditioner but not limited to this.
In any of the above-described technical solution, it is preferable that it includes following at least any for not shutting down the operating mode of defrosting system : refrigeration mode, does not shut down defrost pattern at heating mode.
In the technical scheme, two outdoor heat exchangers are carried out respectively by using two four-way valves and two triple valves Control realizes the refrigeration of air conditioner, heating, does not stop compressor and the functions such as defrost, meet under varying environment user to air conditioner refrigerating, The demand of comfort is heated, and greatly improves air-conditioning heating operational efficiency by not shutting down defrost pattern, to be promoted The comfort of air-conditioning heating, while the problem of the major electrical equipments part frequent start-stop such as avoid the occurrence of compressor again, accelerate defrost speed Degree, to have the function that energy saving, advantageously reduces the failure rate of the major electrical equipments part such as compressor, to effectively improve pressure The reliability of the major electrical equipments part such as contracting machine promotes user experience.
In any of the above-described technical solution, it is preferable that not shutting down defrost pattern includes: heating and First Heat Exchanger defrost, Heating and the second heat exchanger defrosting.
In the technical scheme, by heating and First Heat Exchanger defrost and heating and the second heat exchanger defrosting each other in turn The mode of defrost, realize compressor do not shut down, the purpose of indoor unit continuously heating, greatly improve air-conditioning heating operation effect Rate, so that the comfort of air-conditioning heating is promoted, while effective the problem of avoiding the occurrence of the major electrical equipments part frequent start-stop such as compressor, Defrost speed is accelerated, to have the function that energy saving, advantageously reduces the failure rate of the major electrical equipments part such as compressor, from And the reliability for the major electrical equipments part such as effectively improve compressor, promote user experience.
In any of the above-described technical solution, it is preferable that when air conditioner is in heating and First Heat Exchanger defrost, by first Triple valve is transferred to the state with the conducting of the E interface of the second four-way valve, and the second triple valve is transferred to be connected with the E interface of the second four-way valve State.
In the technical scheme, compressor air-discharging divides the refrigerant into two parts, after being discharged via high-pressure air pipe, first Point the second four-way valve is first passed through, then by the first triple valve and the second triple valve enters the room heat exchanger respectively and carry out condensation and put Heat is condensed into after liquid refrigerant hydraulic fluid pipe in entering;Second part by the first four-way valve enter the first outdoor heat exchanger into Row defrost, be condensed into after liquid refrigerant by first throttling device enter in hydraulic fluid pipe;Then, two parts refrigerant is in middle pressure Liquid pipe throttles after converging by second throttling device, enters back into the evaporation of the second outdoor heat exchanger, finally by the second four-way valve and Low-pressure air pipe returns to compressor air suction mouth, completes a refrigeration cycle.In this way, being achieved that in the defrosting of the first outdoor heat exchanger Meanwhile indoor unit continues uninterrupted heat supply, and defrosting process does not have to stop compressor, air-conditioning heating operational efficiency is greatly improved, from And the comfort of indoor heating is improved, while effective the problem of avoiding the occurrence of the major electrical equipments part frequent start-stop such as compressor, add Fast defrost speed advantageously reduces the failure rate of the major electrical equipments part such as compressor to have the function that energy saving, thus The reliability of the major electrical equipments part such as compressor is effectively improved, user experience is promoted.
In any of the above-described technical solution, it is preferable that when air conditioner is in heating and the second heat exchanger defrosting, by first Triple valve is transferred to the state with the conducting of the E interface of the first four-way valve, and the second triple valve is transferred to be connected with the E interface of the first four-way valve State.
In the technical scheme, compressor air-discharging divides the refrigerant into two parts, after being discharged via high-pressure air pipe, first Point the first four-way valve is first passed through, then by the first triple valve and the second triple valve enters the room heat exchanger respectively and carry out condensation and put Heat is condensed into after liquid refrigerant hydraulic fluid pipe in entering;Second part by the second four-way valve enter the second outdoor heat exchanger into Row defrosting, is condensed into after liquid refrigerant and enters medium pressure liquid pipe by second throttling device;Then, two parts refrigerant exists Middle hydraulic fluid manifold throttles after closing by first throttling device, enters back into the evaporation of the first outdoor heat exchanger, finally passes through the first four-way Valve and low-pressure air pipe return to compressor air suction mouth, complete a refrigeration cycle.It is removed in this way, being achieved that in the second outdoor heat exchanger While white, indoor unit continues uninterrupted heat supply, and defrosting process does not have to stop compressor, greatly improves air-conditioning heating operation effect Rate to improve the comfort of indoor heating, while effectively avoiding the occurrence of asking for the major electrical equipments part frequent start-stop such as compressor Topic, accelerates defrost speed, to have the function that energy saving, advantageously reduces the failure of the major electrical equipments part such as compressor Rate promotes user experience to effectively improve the reliability of the major electrical equipments part such as compressor.
In any of the above-described technical solution, it is preferable that when air conditioner is in refrigeration mode, the first triple valve is transferred to and The state of the E interface conducting of first four-way valve, the second triple valve are transferred to the state with the conducting of the E interface of the second four-way valve.
In the technical scheme, compressor air-discharging, after being discharged via high-pressure air pipe, refrigerant is by the first four-way valve, the The first outdoor heat exchanger is respectively enterd after two four-way valves and the second outdoor heat exchanger carries out condensation heat release, respectively by the after condensation One throttling set, second throttling device throttling, enter back into indoor heat exchanger evaporation, then pass through the first triple valve, second respectively Triple valve enters the E pipe of the first four-way valve, the second four-way valve, finally manages back respectively by the S of the first four-way valve, the second four-way valve To compressor air suction mouth, a refrigeration cycle is completed.Air conditioner refrigerating operaton is realized, refrigerating operaton effect is effectively promoted Rate, energy saving promote user satisfaction and usage experience to meet the demand of user's fast-refrigerating.
In any of the above-described technical solution, it is preferable that when air conditioner is in heating mode, the first triple valve is transferred to and The state of the E interface conducting of first four-way valve, the second triple valve are transferred to the state with the conducting of the E interface of the second four-way valve.
In the technical scheme, compressor air-discharging, after being discharged via high-pressure air pipe, refrigerant passes through the first four-way respectively Valve, the second four-way valve enter the first triple valve, the second triple valve, carry out condensation heat release subsequently into indoor heat exchanger, then divide Not Jing Guo first throttling device, second throttling device throttle, then respectively enter the first outdoor heat exchanger, the second outdoor heat exchange Device evaporation endothermic finally returns to compressor air suction mouth by the first four-way valve and the second four-way valve respectively, completes primary heating and follows Ring.Air conditioner heat-production operation is realized, heating operation efficiency, energy saving is effectively promoted, so that it is quick to meet user The demand of heating promotes user satisfaction and usage experience.
The present invention also proposes a kind of air conditioner, including not shutting down defrosting system in any of the above-described technical solution.By not It shuts down defrosting system to realize the refrigeration of heat pump (air conditioner) complete machine, heating, do not stop the functions such as compressor defrosting, not by compressor It shuts down, the Defrost mode of indoor unit continuously heating, air-conditioning heating operational efficiency is greatly improved, to promote air-conditioning heating Comfort, while effectively the problem of avoiding the occurrence of the major electrical equipments part frequent start-stop such as compressor, accelerate defrost speed, thus Have the function that energy saving, advantageously reduce the failure rate of the major electrical equipments part such as compressor, to effectively improve compressor etc. The reliability of major electrical equipment part promotes user experience.
Additional aspect and advantage of the invention will become obviously in following description section, or practice through the invention Recognize.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures Obviously and it is readily appreciated that, in which:
Fig. 1 shows defrosting system according to an embodiment of the invention of not shutting down in heating and First Heat Exchanger defrost Schematic diagram under mode;
Fig. 2 shows defrosting systems according to an embodiment of the invention of not shutting down in heating and the second heat exchanger defrosting Schematic diagram under mode;
Fig. 3, which is shown, according to an embodiment of the invention does not shut down the schematic diagram of defrosting system in cooling mode;
Fig. 4, which is shown, according to an embodiment of the invention does not shut down the schematic diagram of defrosting system in a heating mode;
Fig. 5 shows the schematic block diagram of air conditioner according to an embodiment of the invention.
Wherein, the corresponding relationship in Fig. 1 to Fig. 4 between appended drawing reference and component names are as follows:
102 compressors, 104 first four-way valves, 106 second four-way valves, 108 first outdoor heat exchangers, 110 second Rooms are changed outside Hot device, 112 first throttling devices, 114 second throttling devices, 116 indoor heat exchangers, 118 first triple valves, 120 second threeways Valve, 122 high-pressure air pipes, 124 low-pressure air pipes, hydraulic fluid pipe in 126.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real Applying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application Feature in example and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also To be implemented using other than the one described here other modes, therefore, protection scope of the present invention is not by described below Specific embodiment limitation.
Referring to Fig. 1 to Fig. 4 description not shutting down defrosting system and do not shut down defrost according to some embodiments of the invention The system process signal under heating and First Heat Exchanger defrost, heating and the second heat exchanger defrosting, refrigeration, heating mode respectively Figure.
The invention proposes one kind not to shut down defrosting system, is used for air conditioner, it includes: compressor that this, which does not shut down defrosting system, 102, the first four-way valve 104, the second four-way valve 106, the first triple valve 118, the second triple valve 120, the first outdoor heat exchanger 108, the second outdoor heat exchanger 110, indoor heat exchanger 116, first throttling device 112, second throttling device 114, wherein compression The exhaust outlet of machine 102 is connected to the D interface of the first four-way valve 104 and the D interface of the second four-way valve 106;First four-way valve 104 C interface is connected to the first outdoor heat exchanger 108, and the E interface of the first four-way valve 104 is connected to the first interface of the first triple valve, The S interface of first four-way valve 104 is connected to the air entry of compressor;The C interface of second four-way valve 106 is connected to outside second Room and changes Hot device 110, the E interface of the second four-way valve 106 are connected to the first interface of the second triple valve, and the S interface of the second four-way valve 106 connects It is connected to the air entry of compressor;The second interface of first triple valve is connected to the E interface of the second four-way valve 106, the first triple valve Third interface be connected to indoor heat exchanger;The second interface of second triple valve is connected to the E interface of the first four-way valve 104, the The third interface of two triple valves is connected to indoor heat exchanger;First outdoor heat exchanger 108 is connected to first throttling device 112;The Two outdoor heat exchangers 110 are connected to second throttling device 114;First throttling device 112 and second throttling device 114 are connected to room Interior heat exchanger.
In this embodiment, outdoor heat exchanger is by 110 two parts of the first outdoor heat exchanger 108 and the second outdoor heat exchanger Composition, each part controls the flow direction of refrigerant by a four-way valve and a triple valve respectively, so that the stream of refrigerant To the operating mode of matching air conditioner.After outdoor heat exchanger frosting, by being changed outside the first outdoor heat exchanger 108 and second Room Hot device 110 carries out the mode of defrost in turn, realize compressor do not shut down, the purpose of indoor unit continuously heating, greatly improve Air-conditioning heating operational efficiency to promote the comfort of air-conditioning heating, while effectively avoiding the occurrence of the major electrical equipments such as compressor The problem of part frequent start-stop, accelerates defrost speed, to have the function that energy saving, it is main to advantageously reduce compressor etc. The failure rate of electrical part promotes user experience to effectively improve the reliability of the major electrical equipments part such as compressor.
In the above embodiment, it is preferable that first throttling device 112 and second throttling device 114 are at least appointed including following One or combinations thereof: electric expansion valve, heating power expansion valve, capillary, spool.
In this embodiment, the refrigerant in pipeline is carried out by first throttling device 112 and second throttling device 114 Throttling, can be fast and effeciently refrigerant decrease temperature and pressure, and effectively the flow of adjusting refrigerant, control are made while throttling The cryogen degree of superheat, thus be conducive to it is quick, be reasonably distributed refrigerant, make system stablize, it is energy saving, improve air conditioner work Efficiency promotes the use reliability of air conditioner.
It should be appreciated by those skilled in the art that first throttling device 112 and second throttling device 114 include but is not limited to Under any one of at least or combinations thereof: electric expansion valve, heating power expansion valve, capillary, spool.
In any of the above-described embodiment, it is preferable that air conditioner is heat pump air conditioner.
In this embodiment, it should be appreciated by those skilled in the art that air conditioner is heat pump air conditioner but not limited to this.
In any of the above-described embodiment, it is preferable that the operating mode for not shutting down defrosting system includes following at least any one: Refrigeration mode, does not shut down defrost pattern at heating mode.
In this embodiment, two outdoor heat exchangers are controlled respectively by using two four-way valves and two triple valves System realizes the refrigeration of air conditioner, heating, does not stop the functions such as compressor defrosting, meet under varying environment user to air conditioner refrigerating, make The demand of thermal comfort, and air-conditioning heating operational efficiency is greatly improved by not shutting down defrost pattern, to promote sky The comfort of heat is modulated, while the problem of the major electrical equipments part frequent start-stop such as avoid the occurrence of compressor again, accelerating defrost speed, To have the function that energy saving, the failure rate of the major electrical equipments part such as compressor is advantageously reduced, to effectively improve compression The reliability of the major electrical equipments part such as machine promotes user experience.
In any of the above-described embodiment, it is preferable that not shutting down defrost pattern includes: heating and 108 defrost of First Heat Exchanger, Heating and 110 defrost of the second heat exchanger.
In this embodiment, by heating and 108 defrost of First Heat Exchanger and heating and 110 defrost of the second heat exchanger each other The mode of defrost in turn, realize compressor do not shut down, the purpose of indoor unit continuously heating, greatly improve air-conditioning heating fortune Line efficiency to promote the comfort of air-conditioning heating, while effectively avoiding the occurrence of the major electrical equipments part frequent start-stop such as compressor Problem accelerates defrost speed, to have the function that energy saving, advantageously reduces the failure of the major electrical equipments part such as compressor Rate promotes user experience to effectively improve the reliability of the major electrical equipments part such as compressor.
As shown in Figure 1, when air conditioner is in heating and when 108 defrost of First Heat Exchanger, the first triple valve 118 is transferred to and The state of the E interface conducting of second four-way valve 106, the second triple valve 120 are transferred to and the conducting of the E interface of the second four-way valve 106 State.
In this embodiment, the exhaust of compressor 102 divides the refrigerant into two parts, after being discharged via high-pressure air pipe 122, the A part first passes through the second four-way valve 106, then enters the room and changes by the first triple valve 118 and the second triple valve 120 respectively Hot device 116 carries out condensation heat release, is condensed into after liquid refrigerant hydraulic fluid pipe 126 in entering;Second part passes through the first four-way valve 104, which enter the first outdoor heat exchanger 108, carries out defrost, is condensed into after liquid refrigerant by the entrance of first throttling device 112 Hydraulic fluid pipe 126;Then, two parts refrigerant throttles after middle hydraulic fluid pipe 126 converges by first throttling device 114, enters back into The evaporation of second outdoor heat exchanger 110, finally returns to 102 air entry of compressor by the second four-way valve 106 and low-pressure air pipe 124, Complete a refrigeration cycle.In this way, being achieved that indoor unit continues uninterruptedly to supply while the defrosting of the first outdoor heat exchanger Heat, defrosting process do not have to stop compressor, air-conditioning heating operational efficiency are greatly improved, to improve the comfortable of indoor heating Property, while effective the problem of avoiding the occurrence of the major electrical equipments part frequent start-stop such as compressor, defrost speed is accelerated, to reach section The about effect of energy consumption, advantageously reduces the failure rate of the major electrical equipments part such as compressor, to effectively improve the main electricity such as compressor The reliability of device promotes user experience.
As shown in Fig. 2, when air conditioner is in heating and when the second heat exchanger defrosting, the first triple valve 118 is transferred to and the The state of the E interface conducting of one four-way valve 104, the second triple valve 120 are transferred to the shape with the conducting of the E interface of the first four-way valve 104 State.
In this embodiment, the exhaust of compressor 102 divides the refrigerant into two parts, after being discharged via high-pressure air pipe 122, the A part first passes through the first four-way valve 104, then enters the room and changes by the first triple valve 118 and the second triple valve 120 respectively Hot device 116 carries out condensation heat release, is condensed into after liquid refrigerant hydraulic fluid pipe 126 in entering;Second part passes through the second four-way valve 106 defrost into the second outdoor heat exchanger 110, are condensed into after liquid refrigerant and enter institute by first throttling device 114 State middle hydraulic fluid pipe 126;Then, two parts refrigerant throttles after middle hydraulic fluid pipe 126 converges by first throttling device 112, then It is evaporated into the first outdoor heat exchanger 108, finally returns to 102 air-breathing of compressor by the first four-way valve 104 and low-pressure air pipe 124 Mouthful, complete a refrigeration cycle.In this way, being achieved that indoor unit continues uninterruptedly while the defrosting of the second outdoor heat exchanger Heat supply, defrosting process do not have to stop compressor, air-conditioning heating operational efficiency are greatly improved, to improve the comfortable of indoor heating Property, while effective the problem of avoiding the occurrence of the major electrical equipments part frequent start-stop such as compressor, defrost speed is accelerated, to reach section The about effect of energy consumption, advantageously reduces the failure rate of the major electrical equipments part such as compressor, to effectively improve the main electricity such as compressor The reliability of device promotes user experience.
As shown in figure 3, first triple valve 118 is transferred to and the first four-way valve 104 when air conditioner is in refrigeration mode The state of E interface conducting, the second triple valve 120 are transferred to the state with the conducting of the E interface of the second four-way valve 106.
In this embodiment, compressor 102 is vented, and after being discharged via high-pressure air pipe 122, refrigerant passes through the first four-way valve 104, the first outdoor heat exchanger 108 is respectively enterd after the second four-way valve 106 and the second outdoor heat exchanger 110 carries out condensation heat release, It throttles respectively by first throttling device 112, second throttling device 114 after condensation, enters back into the evaporation of indoor heat exchanger 116, so Enter the E pipe of the first four-way valve 104, the second four-way valve 106 by the first triple valve 118, the second triple valve 120 respectively afterwards, most 102 air entry of compressor is returned to by the S pipe of the first four-way valve 104, the second four-way valve 106 respectively afterwards, primary refrigeration is completed and follows Ring.Air conditioner refrigerating operaton is realized, refrigerating operaton efficiency, energy saving is effectively promoted, so that it is quick to meet user The demand of refrigeration promotes user satisfaction and usage experience.
As shown in figure 4, the first triple valve 118 is transferred to and the first four-way valve 104 when air conditioner is in heating mode The state of E interface conducting, the second triple valve 120 are transferred to the state with the conducting of the E interface of the second four-way valve 106.
In this embodiment, compressor 102 is vented, and after being discharged via high-pressure air pipe 122, refrigerant passes through the one or four respectively Port valve 104, the second four-way valve 106 enter the first triple valve 118, the second triple valve 120, carry out subsequently into indoor heat exchanger cold Solidifying heat release, then throttles by first throttling device 112, second throttling device 114 respectively, then respectively enters the first outdoor Heat exchanger 108,110 evaporation endothermic of the second outdoor heat exchanger finally pass through the first four-way valve 104 and the second four-way valve 106 respectively 102 air entry of compressor is returned to, primary heating circulation is completed.Air conditioner heat-production operation is realized, heating fortune is effectively promoted Line efficiency, energy saving promote user satisfaction and usage experience to meet the demand that user quickly heats.
As shown in figure 5, the schematic block diagram of air conditioner according to an embodiment of the invention: air conditioner 500, including it is above-mentioned Defrosting system 502 is not shut down in any embodiment.The system of heat pump (air conditioner) complete machine is realized by not shutting down defrosting system 502 Cold, heating does not stop the functions such as compressor defrosting, is not shut down by compressor, the Defrost mode of indoor unit continuously heating, greatly Ground improves air-conditioning heating operational efficiency, to promote the comfort of air-conditioning heating, while it is main effectively to avoid the occurrence of compressor etc. The problem of wanting electrical part frequent start-stop accelerates defrost speed, to have the function that energy saving, advantageously reduces compressor The failure rate of equal major electrical equipments part promotes user experience to effectively improve the reliability of the major electrical equipments part such as compressor.
In the description of this specification, term " first ", " second " are only used for the purpose of description, and should not be understood as indicating Or imply relative importance;Term " connection ", " installation ", " fixation " etc. shall be understood in a broad sense, for example, " connection " can be admittedly Fixed connection, may be a detachable connection, or be integrally connected;It can be directly connected, it can also be indirect by intermediary It is connected.For the ordinary skill in the art, the tool of above-mentioned term in the present invention can be understood as the case may be Body meaning.
In the description of this specification, the description of term " one embodiment " etc. means that the embodiment or example is combined to describe Particular features, structures, materials, or characteristics be included at least one embodiment or example of the invention.In the present specification, Schematic expression of the above terms are not necessarily referring to identical embodiment or example.Moreover, the specific features of description, knot Structure, material or feature can be combined in any suitable manner in any one or more of the embodiments or examples.
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 (10)

1. one kind do not shut down defrosting system, be used for air conditioner, which is characterized in that it is described do not shut down defrosting system include: compressor, First four-way valve, the second four-way valve, the first triple valve, the second triple valve, the first outdoor heat exchanger, the second outdoor heat exchanger, room Interior heat exchanger, first throttling device, second throttling device,
Wherein, the D of the exhaust outlet of the compressor is connected to first four-way valve D interface and second four-way valve connects Mouthful;The C interface of first four-way valve is connected to first outdoor heat exchanger, and the E interface of first four-way valve is connected to The S interface of the first interface of first triple valve, first four-way valve is connected to the air entry of the compressor;Described The C interface of two four-way valves is connected to second outdoor heat exchanger, and the E interface of second four-way valve is connected to the described 2nd 3 The S interface of the first interface of port valve, second four-way valve is connected to the air entry of the compressor;First triple valve Second interface is connected to the E interface of second four-way valve, and the third interface of first triple valve is connected to the interior and changes Hot device;The second interface of second triple valve is connected to the E interface of first four-way valve, the third of second triple valve Interface is connected to the indoor heat exchanger;First outdoor heat exchanger is connected to the first throttling device;The second Room External heat exchanger is connected to the second throttling device;The first throttling device and second throttling device are connected to the interior and change Hot device.
2. according to claim 1 do not shut down defrosting system, which is characterized in that
The first throttling device and the second throttling device include following at least any one or combinations thereof: electric expansion valve, Heating power expansion valve, capillary, spool.
3. according to claim 2 do not shut down defrosting system, which is characterized in that
The air conditioner is heat pump air conditioner.
4. according to any one of claim 1 to 3 do not shut down defrosting system, which is characterized in that
The operating mode for not shutting down defrosting system includes following at least any one: refrigeration mode, heating mode, not shutdown White mode.
5. according to claim 4 do not shut down defrosting system, which is characterized in that
The defrost pattern of not shutting down includes: heating and First Heat Exchanger defrost, heating and the second heat exchanger defrosting.
6. according to claim 5 do not shut down defrosting system, which is characterized in that
When the air conditioner is in heating and First Heat Exchanger defrost, first triple valve is transferred to and second four-way The state of the E interface conducting of valve, second triple valve are transferred to the state with the conducting of the E interface of second four-way valve.
7. according to claim 5 do not shut down defrosting system, which is characterized in that
When the air conditioner is in heating and the second heat exchanger defrosting, first triple valve is transferred to and first four-way The state of the E interface conducting of valve, second triple valve are transferred to the state with the conducting of the E interface of first four-way valve.
8. according to claim 4 do not shut down defrosting system, which is characterized in that
When the air conditioner is in refrigeration mode, the first triple valve is transferred to the state with the conducting of the E interface of the first four-way valve, Second triple valve is transferred to the state with the conducting of the E interface of the second four-way valve.
9. according to claim 4 do not shut down defrosting system, which is characterized in that
When the air conditioner is in heating mode, the first triple valve is transferred to the state with the conducting of the E interface of the first four-way valve, Second triple valve is transferred to the state with the conducting of the E interface of the second four-way valve.
10. a kind of air conditioner, which is characterized in that including not shutting down defrosting system as claimed in any one of claims 1-9 wherein.
CN201710065365.6A 2017-02-06 2017-02-06 Do not shut down defrosting system and air conditioner Active CN106871345B (en)

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CN109373514B (en) * 2018-11-19 2021-07-23 青岛海尔空调电子有限公司 Defrosting control method for outdoor unit of air conditioner
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