CN102809255B - Air conditioner defrosting system and defrosting method - Google Patents
Air conditioner defrosting system and defrosting method Download PDFInfo
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- CN102809255B CN102809255B CN201210301570.5A CN201210301570A CN102809255B CN 102809255 B CN102809255 B CN 102809255B CN 201210301570 A CN201210301570 A CN 201210301570A CN 102809255 B CN102809255 B CN 102809255B
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- 238000010257 thawing Methods 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 51
- 238000010438 heat treatment Methods 0.000 claims abstract description 20
- 238000009825 accumulation Methods 0.000 claims description 36
- 238000001514 detection method Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 6
- 238000005338 heat storage Methods 0.000 abstract description 6
- 238000004378 air conditioning Methods 0.000 description 12
- 239000003507 refrigerant Substances 0.000 description 9
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012782 phase change material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
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- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
本发明提供一种空调除霜系统，包括气液分离器、压缩机组和油分离器串联接于四通阀的两个端口；气截止阀、室内机组、液截止阀、高压储液器、第三电磁阀、室外电子膨胀阀和室外换热器串联接于四通阀的另两个端口；蓄热放热器的第一管路接到高压储液器与第三电磁阀相连的管路及室外换热器连接四通阀的管路；其第二管路接到气液分离器与四通阀相连的管路及室外电子膨胀阀连接第三电磁阀的管路；其第三管路连接到四通阀与气截止阀相连的管路。本发明还提供一种空调除霜方法。该系统在除霜操作运转时，也同时进行制热，且除霜操作不需要消耗制热的热量，而是通过相变换热器中的热量进行除霜操作，即实现了制热和除霜同时进行，提高了空调的性能。
The invention provides an air conditioner defrosting system, which includes a gas-liquid separator, a compressor unit and an oil separator connected in series to two ports of a four-way valve; a gas cut-off valve, an indoor unit, a liquid cut-off valve, a high-pressure liquid storage device, a second The three solenoid valves, the outdoor electronic expansion valve and the outdoor heat exchanger are connected in series to the other two ports of the four-way valve; the first pipeline of the heat storage radiator is connected to the pipeline connected to the high pressure liquid receiver and the third solenoid valve and the pipeline connecting the outdoor heat exchanger to the four-way valve; the second pipeline is connected to the pipeline connecting the gas-liquid separator to the four-way valve and the pipeline connecting the outdoor electronic expansion valve to the third solenoid valve; the third pipeline The pipeline is connected to the pipeline connecting the four-way valve and the gas shut-off valve. The invention also provides an air conditioner defrosting method. When the system is running in defrosting operation, it also performs heating at the same time, and the defrosting operation does not need to consume the heat of heating, but uses the heat in the phase change heat exchanger to perform defrosting operation, that is, it realizes heating and defrosting Frost goes on at the same time, improving the performance of the air conditioner.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly air conditioner defrosting system and Defrost method.
Background technology
In the time that air-conditioning heating cold-producing medium evaporates, because the refrigerant temperature reduction of flowing through outdoor heat exchanger causes outdoor heat exchanger frosting, the frosting meeting of outdoor heat exchanger has a strong impact on the heating performance of air-conditioning.
At present, conventionally adopt hot gas bypass defrosting and cross valve reverse cycle defrost, hot-gas bypass method, in the time of defrosting, by shunting the part heat of compressor air-discharging, thereby reduced the heating performance of air-conditioning, and defrosting time is long, and defrosting effect is poor; And cross valve reverse is in the time of defrosting, need to become refrigerating state from heating state, and then affect indoor hot comfort, referring to Fig. 1, existing multi-connected machine thermal storage defrosting system, it is at refrigerating operaton refrigerant flow direction: ... compressor 1 → oil eliminator 2 → magnetic valve 21 → outdoor heat exchanger 11 → magnetic valve 27 → magnetic valve 25 → magnetic valve 23 → magnetic valve 22 → high-pressure reservoir 8 → liquid stop valve 7 → indoor electronic expansion valve 6 → indoor heat exchanger 5 → gas stop valve 4 → gas-liquid separator 16; Shut electromagnetic valve 23, magnetic valve 24, magnetic valve 26, magnetic valve 27, all the other unlatchings.In the time of heating operation, refrigerant flow direction: ... compressor 1 → oil eliminator 2 → cross valve 3 → gas stop valve 4 → indoor heat exchanger 5 → indoor electronic expansion valve 6 → liquid stop valve 7 → high-pressure reservoir 8 → magnetic valve 22 → subcooler 19 → magnetic valve 25 → outdoor electric expansion valve 6 → outdoor heat exchanger 11 → magnetic valve 21 → gas-liquid separator 16.Shut electromagnetic valve 23, magnetic valve 24, magnetic valve 26, magnetic valve 27, all the other unlatchings.At regenerative operation refrigerant flow direction: ... compressor 1 → oil eliminator 2 → cross valve 3 → gas stop valve 4 → indoor heat exchanger 5 → indoor electronic expansion valve 6 → liquid stop valve 7 → high-pressure reservoir 8 → magnetic valve 22 → phase-change heat-exchanger 10 → magnetic valve 26 → outdoor electric expansion valve 12 → outdoor heat exchanger 11 → magnetic valve 21 → gas-liquid separator 16.Shut electromagnetic valve 23, magnetic valve 24, magnetic valve 25, magnetic valve 27, all the other unlatchings.At Defrost operation refrigerant flow direction: ... compressor 1 → oil eliminator 2 → cross valve 3 → gas stop valve 4 → indoor heat exchanger 5 → indoor electronic expansion valve 6 → liquid stop valve 7 → high-pressure reservoir 8 → magnetic valve 24 → outdoor heat exchanger 11 → outdoor electric expansion valve 12 → magnetic valve 26 → phase-change heat-exchanger 10 → magnetic valve 23 → gas-liquid separator 16.Shut electromagnetic valve 21, magnetic valve 22, magnetic valve 25, magnetic valve 27, all the other unlatchings.Existing defrost system magnetic valve is too much as can be seen here, and major part is arranged on main line, is unfavorable for practical application.Be unfavorable for the modularization of phase change heat accumulator.Liquid control refrigerant temperature has limited the range of choice of phase-change material.
Summary of the invention
For addressing the above problem, the invention provides a kind of air conditioner defrosting system and Defrost method.
A kind of air conditioner defrosting system provided by the invention, comprising: gas-liquid separator, compressor bank and the oil eliminator of series connection successively, and the two ends of this series connection are connected in two ports of cross valve; Gas stop valve, indoor units, liquid stop valve, high-pressure reservoir, the 3rd magnetic valve, outdoor electric expansion valve and the outdoor heat exchanger of series connection successively, the two ends of this series connection are connected in another two ports of cross valve; First pipeline series connection access the first magnetic valve of accumulation of heat radiator is connected respectively to the pipeline that high-pressure reservoir is connected with the 3rd magnetic valve, and forms closed circuit in the pipeline of outdoor heat exchanger connection cross valve; Second pipeline series connection access the second magnetic valve of accumulation of heat radiator is connected respectively to the pipeline that the gas-liquid separator pipeline connected with cross valve and outdoor electric expansion valve are connected the 3rd magnetic valve; The pipeline of the 3rd pipeline series connection access the 4th magnetic valve of accumulation of heat radiator is connected to the pipeline that cross valve is connected with gas stop valve.
This system is in the time that defrost operation turns round, also heat simultaneously, and defrost operation does not need to consume the heat heating, but carry out defrost operation by the heat in phase-change heat-exchanger, and realize and heated and defrost and carry out simultaneously, improve the performance of air-conditioning, and in system, there are three magnetic valves to be attached to phase change heat accumulator, only have a magnetic valve on main line, such being designed with is beneficial to the modularization of phase-transition heat-storage, and practical application is stronger.
Wherein, also comprise the control module being connected with described cross valve, the first magnetic valve, the second magnetic valve, the 3rd magnetic valve and the 4th magnetic valve, for controlling the switching of conducting direction and the first magnetic valve, the second magnetic valve, the 3rd magnetic valve and the 4th magnetic valve of described cross valve.
This system is by control module control, make this system in the time that defrost operation turns round, also heat simultaneously, and defrost operation does not need to consume the heat heating, but carry out defrost operation by the heat in phase-change heat-exchanger, realized and heated and defrost and carry out simultaneously, improved the performance of air-conditioning.
The invention provides a kind of air conditioner defrosting system, comprising: gas-liquid separator, compressor bank and the oil eliminator of series connection successively, the two ends of this series connection are connected in two ports of cross valve; Gas stop valve, indoor units, liquid stop valve, high-pressure reservoir, three-way magnetic valve, outdoor electric expansion valve and the outdoor heat exchanger of series connection successively, the two ends of this series connection are connected in another two ports of cross valve; First pipeline series connection access the first magnetic valve of accumulation of heat radiator is connected respectively to the pipeline that high-pressure reservoir is connected with described three-way magnetic valve, and forms closed circuit in the pipeline of outdoor heat exchanger connection cross valve; The described three-way magnetic valve of the second pipeline series connection access of accumulation of heat radiator is connected to the pipeline that the gas-liquid separator pipeline connected with cross valve and outdoor electric expansion valve are connected described three-way magnetic valve; The pipeline of the 3rd pipeline series connection access the 4th magnetic valve of accumulation of heat radiator is connected to the pipeline that cross valve is connected with gas stop valve.
This system is in the time that defrost operation turns round, also heat simultaneously, and defrost operation does not need to consume the heat heating, but carry out defrost operation by the heat in phase-change heat-exchanger, and realize and heated and defrost and carry out simultaneously, improve the performance of air-conditioning, and in system, there are three magnetic valves to be attached to phase change heat accumulator, only have a magnetic valve on main line, such being designed with is beneficial to the modularization of phase-transition heat-storage, and practical application is stronger.
Wherein, also comprise the control module being connected with three-way magnetic valve with described cross valve, the first magnetic valve, the 4th magnetic valve, for controlling the conducting direction of cross valve and the corresponding switching of the first magnetic valve, the 4th magnetic valve and three-way magnetic valve described in accumulation of heat and when defrosting.
This system is by control module control, make this system in the time that defrost operation turns round, also heat simultaneously, and defrost operation does not need to consume the heat heating, but carry out defrost operation by the heat in phase-change heat-exchanger, realized and heated and defrost and carry out simultaneously, and used three-way magnetic valve, saved the cost of air-conditioning.
Wherein, also comprise the temperature sensor that whether reaches frosting temperature for detection of outdoor heat exchanger, be connected with described control module; The temperature information that described control module detects according to described temperature sensor determines whether to start described system and carries out defrost operation.
By the whether frosting of temperature sensor sensing chamber external heat exchanger, in the time of outdoor heat exchanger frosting, system just starts defrost operation, has improved the performance of system.
Wherein, described accumulation of heat radiator is phase-change heat-exchanger.
Carry out accumulation of heat by phase-change heat-exchanger, heat storage efficiency is provided, improved the operational efficiency of system.
Wherein, described indoor units comprises more than one group indoor set in parallel; This indoor set comprises the indoor heat exchanger and the indoor electronic expansion valve that are connected in series.
By the live load of regulating system, utilize the hot gas that compressor bank is discharged to carry out accumulation of heat, thereby the heat while not needing to heat while making defrost operation can be realized defrosting, has improved the performance of system.
The invention provides a kind of according to the Defrost method of the air conditioner defrosting system described in the claims, comprise: accumulation of heat step, this accumulation of heat step comprises: control that described the 3rd magnetic valve and the 4th magnetic valve are opened, the first magnetic valve and the second closed electromagnetic valve, oil eliminator is to gas stop valve, outdoor heat exchanger to gas-liquid separator described in described cross valve conducting; Defrosting step, this defrosting step comprises: control that described the first magnetic valve and the second magnetic valve are opened, the 3rd magnetic valve and the 4th closed electromagnetic valve, oil eliminator is to gas stop valve described in described cross valve conducting.
Pass through the method, air-conditioning is in the time that defrost operation turns round, heat, and defrost operation do not need to consume the heat that heats simultaneously, but carry out defrost operation by the heat in phase-change heat-exchanger yet, realized and heated and defrost and carry out simultaneously, improve the performance of air-conditioning, and in system, had three magnetic valves to be attached to phase change heat accumulator, only had a magnetic valve on main line, like this be designed with the modularization that is beneficial to phase-transition heat-storage, practical application is stronger.
The invention provides a kind of according to the Defrost method of the air conditioner defrosting system described in the claims, comprise: accumulation of heat step, this accumulation of heat step comprises: control described the 4th magnetic valve unlatching, the first closed electromagnetic valve, described in described cross valve conducting, oil eliminator is to gas stop valve, outdoor heat exchanger to gas-liquid separator, and high-pressure reservoir is to outdoor electric expansion valve described in described three-way magnetic valve conducting; Defrosting step, this defrosting step comprises: control that described the first magnetic valve is opened, described the 4th closed electromagnetic valve, oil eliminator is to gas stop valve described in described cross valve conducting, and accumulation of heat radiator is to outdoor electric expansion valve described in described three-way magnetic valve conducting.
This system is in the time that defrost operation turns round, also heat simultaneously, and defrost operation does not need to consume the heat heating, but carry out defrost operation by the heat in phase-change heat-exchanger, and realize and heated and defrost and carry out simultaneously, improve the performance of air-conditioning, and in system, only have two magnetic valves to be attached to phase change heat accumulator, only have a magnetic valve on main line, such being designed with is beneficial to the modularization of phase-transition heat-storage, and practical application is stronger.
Wherein, when the method is carried out described defrosting step, also comprise: control described cross valve also described in conducting outdoor heat exchanger to gas-liquid separator.
This system, in the time that defrost operation turns round, is also carried out accumulation of heat simultaneously and heats operation, has improved the performance of air-conditioning.
Brief description of the drawings
Fig. 1 is the structural representation of air conditioner defrosting system of the prior art.
Fig. 2 provides a kind of principle schematic of air conditioner defrosting system for the embodiment of the present invention.
The principle schematic of a kind of air conditioner defrosting system that Fig. 3 provides for another embodiment of the present invention.
Detailed description of the invention
The embodiment of the present invention provides a kind of air conditioner defrosting system, below in conjunction with accompanying drawing, the embodiment of the present invention is described in detail.Referring to Fig. 2, this system comprises gas-liquid separator (16), compressor bank (1) and the oil eliminator (2) of series connection successively, and the two ends of this series connection are connected in two ports of cross valve (3); Gas stop valve (4), indoor units (17), liquid stop valve (7), high-pressure reservoir (8), outdoor electric expansion valve (12) and the outdoor heat exchanger (11) of series connection successively, the two ends of this series connection are connected in another two ports of cross valve (3); On the pipeline of high-pressure reservoir (8) junction chamber exoelectron expansion valve (12), be provided with the 3rd magnetic valve (14); A bypass line in parallel on the pipeline of gas stop valve (4) connection cross valve (3), this bypass line is through accumulation of heat radiator (10); Between the pipeline of high-pressure reservoir (8) connection the 3rd magnetic valve (14) and the pipeline of outdoor heat exchanger (11) connection cross valve (3), by the first pipeline connection, this first pipeline is through accumulation of heat radiator (10); Between the pipeline of the pipeline of gas-liquid separator (16) connection cross valve (3) and outdoor electric expansion valve (12) connection the 3rd magnetic valve (14), by the second pipeline connection, this second pipeline is through accumulation of heat radiator (10); On described bypass line, the first pipeline and the second pipeline, arrange respectively the 4th, first, second magnetic valve.
Described accumulation of heat radiator (10) is phase-change heat-exchanger.
This system also comprises the control module being connected with described cross valve, the first magnetic valve, the second magnetic valve, the 3rd magnetic valve and the 4th magnetic valve, for controlling the conducting direction of described cross valve and the switch of the first magnetic valve, the second magnetic valve, the 3rd magnetic valve and the 4th magnetic valve.This system also comprises the temperature sensor that whether reaches frosting temperature for detection of outdoor heat exchanger, is connected with described control module; The temperature information that described control module detects according to described temperature sensor determines whether to start described system and carries out defrost operation.
Indoor units 17 comprises multiple indoor sets in parallel, and each indoor set is made up of with indoor electronic expansion valve 6 indoor heat exchanger 5 of connecting, and indoor units 17 is series on the pipeline between gas stop valve 4 and liquid stop valve 7.Fig. 2 only illustrates that indoor units 17 has two groups of indoor sets, according to the specific performance of compressor, indoor units 17 can be organized indoor set by N and form, N is greater than 1 positive integer, in the time that system heats, indoor electronic expansion valve 6 plays adjust flux, and in the time of cooling system, outdoor electric expansion valve 12 plays adjust flux.
The port of export of compressor bank 1 is communicated with the arrival end of oil eliminator 2, and the port of export of oil eliminator 2 is communicated with the first port of cross valve 3.
The second port of cross valve 3 is communicated with the entrance of indoor units 17 by gas stop valve 4, and the 4th magnetic valve 15 is connected in parallel on after connecting with phase-change heat-exchanger 10 on the pipeline between the 3rd port and the gas stop valve 4 of cross valve 3.The outlet of indoor units 17 is communicated with high-pressure reservoir 8 by liquid stop valve 7.The first magnetic valve 9, phase-change heat-exchanger 10 and the second magnetic valve 13 that are connected in series are successively in parallel with the 3rd magnetic valve 14.High-pressure reservoir 8 is communicated with outdoor electric expansion valve 12 by the first magnetic valve 9, phase-change heat-exchanger 10 and second magnetic valve 13 of the 3rd magnetic valve 14 and series connection respectively, outdoor electric expansion valve 12 is communicated with outdoor heat exchanger 11, and outdoor heat exchanger 11 is communicated with the 4th port of cross valve 3.
The port of export of gas-liquid separator 16 is communicated with the arrival end of compressor bank 1, and the port of export of phase-change heat-exchanger 10 is communicated with arrival end and the outdoor heat exchanger 11 of gas-liquid separator 16 respectively.
In another embodiment of the present invention, referring to Fig. 3, outdoor electric expansion valve 12 is connected with phase-change heat-exchanger 10 with high-pressure reservoir 8 by a three-way magnetic valve.Remaining workpiece and operation logic and foregoing description are basic identical.
The embodiment of the present invention also provides a kind of Defrost method for above-mentioned air conditioner defrosting system, comprise: accumulation of heat step, comprise: control that described the 3rd magnetic valve 14 and the 4th magnetic valve 15 are opened, the first magnetic valve 9 and the second magnetic valve 13 close, cross valve 3 conducting oil eliminators 2 are to gas stop valve 4; Defrosting step, comprising: control that described the first magnetic valve 9 and the second magnetic valve 13 are opened, the 3rd magnetic valve 14 and the 4th magnetic valve 15 close, cross valve 3 conducting oil eliminators 2 are to gas stop valve 4.
The embodiment of the present invention provides again a kind of Defrost method for above-mentioned air conditioner defrosting system, comprise: accumulation of heat step, comprise: control the 4th magnetic valve 15 is opened, the first magnetic valve 9 cuts out, cross valve 3 conducting oil eliminators 2 are to gas stop valve 4, and this three-way magnetic valve conducting high-pressure reservoir 8 is to outdoor electric expansion valve 12; Defrosting step, comprising: control the first magnetic valve 9 is opened, the 4th magnetic valve 15 cuts out, and cross valve 3 conducting oil eliminators 2 are to gas stop valve 4, and this three-way magnetic valve conducting accumulation of heat radiator 10 is to outdoor electric expansion valve 12.
While wherein carrying out described defrosting step, the method also comprises: control described cross valve also described in conducting outdoor heat exchanger to gas-liquid separator.The course of work of this kind of air conditioner defrosting system will be described in detail below.
This system is in the time heating, cold-producing medium becomes high temperature and high pressure gas after compressor bank 1 compression, this high temperature and high pressure gas enters oil eliminator 2 to remove the oil content in cold-producing medium, then make refrigerant flow direction indoor units 17 with heating indoor temperature by cross valve 3, after cross valve 3, enter indoor units 17 by gas stop valve 4, after indoor heat exchanger 6 heat-shifts in indoor units 17, the temperature of cold-producing medium declines, then enter high-pressure reservoir 8 by liquid stop valve 7, be communicated with outdoor electric expansion valve 12 through the 3rd magnetic valve 14 afterwards, by outdoor electric expansion valve 12 dam step-down laggard enter outdoor heat exchanger 11, cold-producing medium enters gas-liquid separator 16 by cross valve 3 after becoming gas by the outer heat of vaporization of absorption chamber, cold-producing medium is after gas-liquid separation, gas part circulates after entering compressor bank 1 next time.
Wherein, this system is in the time heating, cold-producing medium is by after cross valve 3, entered before indoor units 17 by gas stop valve 4, part of refrigerant first enters phase-change heat-exchanger 10 by the 4th magnetic valve 15 and carries out accumulation of heat, flows to indoor units 17 with heating indoor temperature afterwards together with another part by gas stop valve 4.
And heating in process, after cold-producing medium is by indoor heat exchanger 5 heat radiations, temperature declines, enter high-pressure reservoir 8 by liquid stop valve 7, if system detects frosting on outdoor heat exchanger, can open the first magnetic valve 9, close the 3rd magnetic valve 14, cold-producing medium after cooling enters phase-change heat-exchanger 10, absorb the heat that phase-change heat-exchanger 10 is accumulated, refrigerant temperature improves, the cold-producing medium that temperature raises enters outdoor heat exchanger 11 and carries out defrost operation, enter phase-change heat-exchanger 10 endothermic gasifications by outdoor electric expansion valve 12 and the second magnetic valve 13 afterwards, enter afterwards gas-liquid separator 16, cold-producing medium is after gas-liquid separation, gas part circulates after entering compressor bank 1 next time.If detecting, system on outdoor heat exchanger, there is no frosting, can close the first magnetic valve 9, open the 3rd magnetic valve 14, cold-producing medium after cooling enters outdoor heat exchanger 11 endothermic gasifications by the 3rd magnetic valve 14 and outdoor electric expansion valve 12, enter gas-liquid separator 16 by cross valve 3 afterwards, cold-producing medium is after gas-liquid separation, and gas part circulates after entering compressor bank 1 next time.As can be seen here, this system, in heating, can be carried out accumulation of heat and defrosting simultaneously.
This system is in the time of refrigeration, cold-producing medium becomes high temperature and high pressure gas after compressor bank 1 compression, this high temperature and high pressure gas enters oil eliminator 2 to remove the oil content in cold-producing medium, then enter outdoor heat exchanger 11 liquefaction of dispelling the heat by cross valve 3, enter high-pressure reservoir 8 by outdoor electric expansion valve 12 and the 3rd magnetic valve 14 afterwards, then enter indoor units 17 by liquid stop valve 7, after indoor heat exchanger 5 heat-shifts of indoor units 17, in absorption chamber, heat reduces after indoor temperature, become the gas of low-temp low-pressure, enter gas-liquid separator 16 by gas stop valve 4 and cross valve 3, cold-producing medium is after gas-liquid separation, gas part circulates after entering compressor bank 1 next time.
The foregoing is only preferred embodiment of the present invention; not in order to limit the present invention; for example; the module of difference in functionality can be realized by an integrated chip etc.; all within the spirit and principles in the present invention; any amendment of doing, be equal to replacement, improvement etc., within protection scope of the present invention all should be included in.
Claims (10)
1. an air conditioner defrosting system, is characterized in that: comprising:
Gas-liquid separator (16), compressor bank (1) and the oil eliminator (2) of series connection successively, the two ends of this series connection are connected in two ports of cross valve (3);
Gas stop valve (4), indoor units (17), liquid stop valve (7), high-pressure reservoir (8), the 3rd magnetic valve (14), outdoor electric expansion valve (12) and the outdoor heat exchanger (11) of series connection successively, the two ends of this series connection are connected in another two ports of cross valve (3);
First pipeline series connection access the first magnetic valve (9) of accumulation of heat radiator is connected respectively to the pipeline that high-pressure reservoir (8) is connected with the 3rd magnetic valve (14), and forms closed circuit in the pipeline of outdoor heat exchanger (11) connection cross valve (3);
Second pipeline series connection access the second magnetic valve (13) of accumulation of heat radiator is connected respectively to the pipeline that gas-liquid separator (16) pipeline connected with cross valve (3) and outdoor electric expansion valve (12) are connected the 3rd magnetic valve (14);
The pipeline of the 3rd pipeline series connection access the 4th magnetic valve (15) of accumulation of heat radiator is connected to the pipeline that cross valve (3) is connected with gas stop valve (4).
2. air conditioner defrosting system according to claim 1, it is characterized in that: also comprise the control module being connected with described cross valve, the first magnetic valve, the second magnetic valve, the 3rd magnetic valve and the 4th magnetic valve, for controlling the switching of conducting direction and the first magnetic valve, the second magnetic valve, the 3rd magnetic valve and the 4th magnetic valve of described cross valve.
3. an air conditioner defrosting system, is characterized in that: comprising:
Gas-liquid separator (16), compressor bank (1) and the oil eliminator (2) of series connection successively, the two ends of this series connection are connected in two ports of cross valve (3);
Gas stop valve (4), indoor units (17), liquid stop valve (7), high-pressure reservoir (8), three-way magnetic valve, outdoor electric expansion valve (12) and the outdoor heat exchanger (11) of series connection successively, the two ends of this series connection are connected in another two ports of cross valve (3);
First pipeline series connection access the first magnetic valve (9) of accumulation of heat radiator is connected respectively to the pipeline that high-pressure reservoir (8) is connected with described three-way magnetic valve, and forms closed circuit in the pipeline of outdoor heat exchanger (11) connection cross valve (3);
The described three-way magnetic valve of the second pipeline series connection access of accumulation of heat radiator is connected to the pipeline that gas-liquid separator (16) pipeline connected with cross valve (3) and outdoor electric expansion valve (12) are connected described three-way magnetic valve;
The pipeline of the 3rd pipeline series connection access the 4th magnetic valve (15) of accumulation of heat radiator is connected to the pipeline that cross valve (3) is connected with gas stop valve (4).
4. air conditioner defrosting system according to claim 3, it is characterized in that: also comprise the control module being connected with three-way magnetic valve with described cross valve, the first magnetic valve, the 4th magnetic valve, for controlling the conducting direction of cross valve and the corresponding switching of the first magnetic valve, the 4th magnetic valve and three-way magnetic valve described in accumulation of heat and when defrosting.
5. according to the air conditioner defrosting system described in claim 2 or 4, it is characterized in that:
Also comprise the temperature sensor that whether reaches frosting temperature for detection of outdoor heat exchanger, be connected with described control module;
The temperature information that described control module detects according to described temperature sensor determines whether to start described system and carries out defrost operation.
6. according to the air conditioner defrosting system described in claim 1 or 3, it is characterized in that: described accumulation of heat radiator (10) is phase-change heat-exchanger.
7. air conditioner defrosting system according to claim 1, is characterized in that:
Described indoor units (17) comprises more than one group indoor set in parallel;
This indoor set comprises the indoor heat exchanger (5) and indoor electronic expansion valve (6) that are connected in series.
8. a Defrost method for air conditioner defrosting system according to claim 1, is characterized in that, comprising:
Accumulation of heat step, comprise: control that described the 3rd magnetic valve and the 4th magnetic valve are opened, the first magnetic valve and the second closed electromagnetic valve, oil eliminator (2) is to gas stop valve (4), outdoor heat exchanger (11) to gas-liquid separator (16) described in described cross valve conducting;
Defrosting step, comprising: control that described the first magnetic valve and the second magnetic valve are opened, the 3rd magnetic valve and the 4th closed electromagnetic valve, oil eliminator (2) is to gas stop valve (4) described in described cross valve conducting;
Thermal storage defrosting step, comprising: control described the first magnetic valve, the second magnetic valve unlatching, control described the 3rd magnetic valve, the 4th closed electromagnetic valve, defrost; When frosting, do not control described the first magnetic valve, the second closed electromagnetic valve, control described the 3rd magnetic valve and open, to circulate; Described in described cross valve conducting, oil eliminator (2) is to gas stop valve (4); Described each step is moved under heating condition.
9. a Defrost method for air conditioner defrosting system according to claim 3, is characterized in that, comprising:
Accumulation of heat step, comprise: control described the 4th magnetic valve unlatching, the first closed electromagnetic valve, described in described cross valve conducting, oil eliminator (2) is to gas stop valve (4), outdoor heat exchanger (11) to gas-liquid separator (16), and high-pressure reservoir (8) is to outdoor electric expansion valve (12) described in described three-way magnetic valve conducting;
Defrosting step, comprise: control described the first magnetic valve unlatching, described the 4th closed electromagnetic valve, described in described cross valve conducting, oil eliminator (2) is to gas stop valve (4), and accumulation of heat radiator (10) is to outdoor electric expansion valve (12) described in described three-way magnetic valve conducting.
10. Defrost method according to claim 8 or claim 9, is characterized in that, while carrying out described defrosting step, also comprises:
Control described cross valve also described in conducting outdoor heat exchanger (11) to gas-liquid separator (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210301570.5A CN102809255B (en) | 2012-08-22 | 2012-08-22 | Air conditioner defrosting system and defrosting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210301570.5A CN102809255B (en) | 2012-08-22 | 2012-08-22 | Air conditioner defrosting system and defrosting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102809255A CN102809255A (en) | 2012-12-05 |
| CN102809255B true CN102809255B (en) | 2014-08-06 |
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| CN103225936B (en) * | 2013-04-24 | 2015-11-25 | 青岛海尔空调电子有限公司 | A kind of air-conditioning system and Defrost method thereof with defroster |
| CN104634009B (en) * | 2013-11-14 | 2017-02-08 | 珠海格力电器股份有限公司 | Control method of air conditioner circulating device |
| CN104180442B (en) * | 2014-09-11 | 2017-04-12 | 珠海格力电器股份有限公司 | Air conditioning system |
| CN104456736A (en) * | 2014-12-12 | 2015-03-25 | 珠海格力电器股份有限公司 | Air conditioner, heat storage device, and control method for air conditioner |
| CN106288482B (en) * | 2015-05-19 | 2019-03-12 | Tcl空调器(中山)有限公司 | Air conditioner |
| CN106765688B (en) * | 2016-11-15 | 2022-08-02 | 珠海格力电器股份有限公司 | Outdoor unit of heat recovery multi-split air conditioner system and heat recovery multi-split air conditioner system with outdoor unit |
| CN106765778B (en) * | 2017-01-10 | 2019-09-27 | 美的集团武汉制冷设备有限公司 | The defrosting control method of air conditioner and air conditioner |
| CN111964308A (en) * | 2020-08-28 | 2020-11-20 | 万江新能源集团有限公司 | Air source defrosting device |
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| CN1052939A (en) * | 1989-08-18 | 1991-07-10 | 三菱电机株式会社 | Conditioner |
| JP2002106998A (en) * | 2000-09-28 | 2002-04-10 | Hitachi Ltd | Heat storage heat pump air conditioner |
| CN101413744A (en) * | 2008-11-25 | 2009-04-22 | 哈尔滨工业大学 | Air source heat pump phase-change energy storage defrosting system with super cooling effect |
| JP2012077942A (en) * | 2010-09-30 | 2012-04-19 | Panasonic Corp | Air conditioner |
| CN102003853B (en) * | 2010-12-20 | 2012-06-06 | 哈尔滨工业大学 | Multi-connected unit phase change energy storage hot liquid defrosting system |
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