CN102538327A - Defrosting method and one-driving-two dual-compressor air-conditioning system adopting defrosting method - Google Patents
Defrosting method and one-driving-two dual-compressor air-conditioning system adopting defrosting method Download PDFInfo
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- CN102538327A CN102538327A CN2012100243377A CN201210024337A CN102538327A CN 102538327 A CN102538327 A CN 102538327A CN 2012100243377 A CN2012100243377 A CN 2012100243377A CN 201210024337 A CN201210024337 A CN 201210024337A CN 102538327 A CN102538327 A CN 102538327A
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Abstract
The invention provides a defrosting method for a one-driving-two dual-compressor air-conditioning system. The air-conditioning system is provided with two air-conditioning subsystems sharing one condenser. The method comprises the step of: under the conditions that one air-conditioning subsystem is under a standby mode, a refrigerating mode, a dehumidifying mode or an air supply mode and the other air-conditioning subsystem is under a heating mode, causing the two air-conditioning subsystems to defrost the condenser together after the other air-conditioning subsystem enters a defrosting mode from the heating mode. The invention also provides the one-driving-two dual-compressor air-conditioning system adopting the defrosting method. The system comprises two independent air-conditioning subsystems sharing one condenser and an auxiliary defrosting control module used for controlling the two air-conditioning subsystems to defrost, wherein the module is provided with a signal input end and a signal output end; the signal input end is connected with a defrosting sensor in each of the two air-conditioning subsystems; and the signal output end is connected with a four-way valve in each of the two air-conditioning subsystems and is used for outputting a reversing signal to the four-way valve. According to the defrosting method provided by the invention, the defrosting time is shortened and the better defrosting effect is achieved.
Description
Technical field
The present invention relates to a kind of one drag two double-compressor air-conditioning system that is used for the Defrost method of one drag two double-compressor air-conditioning system and adopts this Defrost method.
Background technology
In existing apparatus one drag two double-compressor air-conditioning systems technology, when arbitrary sub-air-conditioning system was in heating mode and need defrosts, when having only another sub-air-conditioning system also to be in heating mode, two sub-air-conditioning systems just got into defrosting together; And when another sub-air-conditioning system was in standby mode or refrigeration mode or dehumidification mode or air supply pattern, the sub-air-conditioning system self that only is in heating mode was participated in defrosting, and another sub-air-conditioning system keeps original mode of operation.Compare one-to-one compressor air-conditioning system; Because it is big that the condenser that is provided with becomes relatively, make system's defrosting difficulty strengthen the defrosting time lengthening; And because the heat that single compressor provides is less; Be easy to cause the defrosting of condenser unclean, make that the air-conditioning system heating capacity is lower, influenced heating effect.
Summary of the invention
To the one or more problems that exist in the correlation technique; The object of the present invention is to provide a kind of one drag two double-compressor air-conditioning system that is used for the Defrost method of one drag two double-compressor air-conditioning system and adopts this Defrost method, thereby defrosting effect is eliminated because the undesirable defective that causes of defrosting to improve.
For realizing above-mentioned purpose; A kind of Defrost method that is used for one drag two double-compressor air-conditioning system is provided according to an aspect of the present invention; This air-conditioning system has two sub-air-conditioning systems of a shared condenser; Defrost method comprises: be in standby mode or refrigeration mode or dehumidification mode or air supply pattern and another sub-air-conditioning system a sub-air-conditioning system and be under the situation of heating mode; After said another sub-air-conditioning system gets into defrosting from heating mode, make two sub-air-conditioning systems carry out defrost operation to condenser together.Like this, the invention enables two sub-air-conditioning systems together condenser to be defrosted, two compressors during defrosting in the air-conditioning system are worked together, shorten air-conditioning system defrosting required time, reach better defrosting effect.In the whole defrosting of air-conditioning system-heat in the cycle, heat the time accounting and promote, improved indoor average heating capacity and heating effect.
Preferably; Defrost method also comprises: only make the described sub-air-conditioning system that be in standby mode or refrigeration mode or dehumidification mode or air supply pattern that condenser carried out defrost operation in the section transit time before said another sub-air-conditioning system gets into defrosting from heating mode.Under this preferred situation; Owing to promptly begin to carry out defrost operation the transit time before getting into defrosting in the section; Carry out defrost operation together in latter two sub-air-conditioning system of entering defrosting, therefore significantly shortened air-conditioning system defrosting required time, reach good defrosting effect.
Preferably, Defrost method also comprises: when two sub-air-conditioning systems all are in heating mode, after one of them sub-air-conditioning system gets into defrosting from heating mode, make these two sub-air-conditioning systems carry out defrost operation to condenser together.Under this preferred situation, when arbitrary sub-air-conditioning system is under the heating mode when needing defrosting, all adopt two sub-air-conditioning systems together condenser to be defrosted, this has shortened air-conditioning system defrosting required time, reaches better defrosting effect.
On the other hand; The present invention also provides the one drag two double-compressor air-conditioning system of the aforementioned arbitrary Defrost method of a kind of the present invention of employing; Comprise: two independently sub-air-conditioning systems of a shared condenser; And in order to control the auxiliary defrosting control module that these two sub-air-conditioning systems defrost together; Wherein, auxiliary defrosting control module has: the signal input part that is connected with separately defrosting sensor in two sub-air-conditioning systems, be connected with separately cross valve in two sub-air-conditioning systems in order to export the signal output part of commutation signal to it.One drag two double-compressor air-conditioning system of the present invention and Defrost method
Preferably, one drag two double-compressor air-conditioning system air conditioner system also comprises two temperature sensors, is installed in the port of two liquid refrigerants of condenser respectively.
To sum up, one drag two double-compressor air-conditioning system of the present invention and Defrost method can shorten defrosting time; Make and obtain more heat in the identical time of condenser; Reach better defrosting effect, improved indoor average heating capacity, obtain better heating effect.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage are from obviously with easily understanding becoming the description of embodiment below in conjunction with accompanying drawing, wherein:
Fig. 1 is the sketch map according to one drag two double-compressor air-conditioning of the present invention system.
The specific embodiment
The specific embodiment of the present invention is below described.
The invention provides on the one hand a kind of one drag two double-compressor air-conditioning system; This air-conditioning system has two sub-air-conditioning systems of a shared condenser; This Defrost method comprises: be in standby mode or refrigeration mode or dehumidification mode or air supply pattern and another sub-air-conditioning system a sub-air-conditioning system and be under the situation of heating mode; After said another sub-air-conditioning system gets into defrosting from heating mode, make two sub-air-conditioning systems carry out defrost operation to condenser together.
Further; Defrost method of the present invention also comprises: be in standby mode or refrigeration mode or dehumidification mode or air supply pattern and another sub-air-conditioning system a sub-air-conditioning system and be under the situation of heating mode; Only make the described sub-air-conditioning system that be in standby mode or refrigeration mode or dehumidification mode or air supply pattern that condenser carried out defrost operation in the section transit time before said another sub-air-conditioning system gets into defrosting from heating mode.Because in said transit time; Said another sub-air-conditioning system pressure imbalance; Can not start cross valve immediately and switch to kind of refrigeration cycle and get into defrost operation, its cross valve switching-over needs certain hour (being preferably 60 seconds), and this section is described transit time of section commutating period; Comparatively speaking, the sub-air-conditioning system that is in standby mode or refrigeration mode or dehumidification mode or air supply pattern receives when defrosting signal, because this sub-air-conditioning system pressure is in poised state, therefore can directly carry out defrost operation.Therefore; The invention enables in the section in transit time and to have only an air-conditioning system to carry out defrost operation; Then is that two sub-air-conditioning systems defrost together getting into the defrosting back until defrosting between tailend, thereby the invention enables condenser to obtain more heat, and it is faster to defrost.Like this, Defrost method of the present invention can shorten air-conditioning system defrosting required time, and it is cleaner to defrost, and has improved the heating effect of air-conditioning system.
Further, Defrost method of the present invention also comprises: when two sub-air-conditioning systems all are in heating mode, after one of them sub-air-conditioning system gets into defrosting from heating mode, make these two sub-air-conditioning systems carry out defrost operation to condenser together.Thereby the present invention can realize: when arbitrary sub-air-conditioning system be under the heating mode when needing defrosting (; Arbitrary sub-air-conditioning system gets into the defrosting back from heating mode); All adopt two sub-air-conditioning systems together condenser to be defrosted; This has shortened air-conditioning system defrosting required time, reaches better defrosting effect.
On the other hand; The present invention also provides the one drag two double-compressor air-conditioning system of the aforementioned arbitrary Defrost method of a kind of the present invention of employing; Referring to Fig. 1; It comprises: the sub-air-conditioning system 1 and the sub-air-conditioning system 2 of a shared condenser 4, and in order to control the auxiliary defrosting control module 7 that these two sub-air-conditioning systems defrost.Should auxiliary defrosting control module 7 can realize following function at least: be in standby mode or refrigeration mode or dehumidification mode or air supply pattern and another sub-air-conditioning system a sub-air-conditioning system and be under the situation of heating mode; After said another sub-air-conditioning system gets into defrosting from heating mode, make two sub-air-conditioning systems carry out defrost operation to condenser together.In addition; Should auxiliary defrosting control module 7 can also realize following function: be in standby mode or refrigeration mode or dehumidification mode or air supply pattern and another sub-air-conditioning system a sub-air-conditioning system and be under the situation of heating mode; Only make the sub-air-conditioning system that be in standby mode or refrigeration mode or dehumidification mode or air supply pattern that condenser carried out defrost operation in the section transit time before said another sub-air-conditioning system gets into defrosting from heating mode.
Continuation is referring to Fig. 1, and sub-air-conditioning system 1 comprises: vaporising device 13, condenser 4 is connected the compressor 11 between vaporising device 13 and the condenser 4, defrosting sensor 16.Sub-air-conditioning system 2 comprises: vaporising device 23 is connected the compressor 21 between vaporising device 23 and the condenser 4, defrosting sensor 26.Two sub-air-conditioning system common condenser 4 wherein.
Also illustrate among Fig. 1, on the port of the liquid refrigerant of condenser 4, temperature sensor 16,26 is installed. Temperature sensor 16,26 is delivered to the defrosting control module 7 that connects on it with detected defrosting temperature value, and when satisfying the defrosting condition, defrosting control module 7 is sent the defrosting signal to sub-air-conditioning system 1 and sub-air-conditioning system 2.Corresponding, auxiliary defrosting control module 7 has: with the signal input part that defrosting sensor 16 in the sub-air-conditioning system 1 is connected, be connected with cross valve 12 in order to export the signal output part of commutation signal to it; With the signal input part that is connected of defrosting sensor 26 in the sub-air-conditioning system 2, be connected with cross valve 22 in order to export the signal output part of commutation signal to it; And the signal output part that is connected with corresponding compressor, outdoor fan, indoor fan (not shown), in order to require the start stop signal of output control compressor, outdoor fan, indoor fan according to defrosting.Commutation signal wherein is used to switch the refrigerating state that heats of corresponding sub-air-conditioning system.
Can find out also from Fig. 1 that in addition air-conditioning system of the present invention also comprises: be connected the choke valve 15,25 between vaporising device 13,23 and the condenser 4.Adopt choke valve 15,25 can the liquid refrigerant of corresponding sub-adjusting system mesohigh low temperature be treated to the cold-producing medium of low-temp low-pressure gas-liquid mixed, vaporising device 13,23 is played one's part to the full, reduce the energy consumption of air-conditioning system.
To sum up, one drag two double-compressor air-conditioning system of the present invention and Defrost method can shorten defrosting time; Make and obtain more heat in the identical time of condenser; Reach better defrosting effect, improved indoor average heating capacity, obtain better heating effect.In whole defrosting-heat in the cycle, the invention enables to heat the time accounting and promote, improved indoor average heating capacity and heating effect.Further, it is long that the present invention has eliminated arbitrary subsystem single compressor defrosting time, and the unclean hidden danger that defrosts has improved the stability and the comfort of system.
Although illustrated and described embodiments of the invention; For those of ordinary skill in the art; Be appreciated that under the situation that does not break away from principle of the present invention and spirit and can carry out multiple variation, modification, replacement and modification that scope of the present invention is accompanying claims and be equal to and limit to these embodiment.
Claims (5)
1. Defrost method that is used for one drag two double-compressor air-conditioning system, said air-conditioning system has two sub-air-conditioning systems of a shared condenser, and said Defrost method comprises:
Being in standby mode or refrigeration mode or dehumidification mode or air supply pattern and another sub-air-conditioning system a sub-air-conditioning system is under the situation of heating mode; After said another sub-air-conditioning system gets into defrosting from heating mode, make two sub-air-conditioning systems carry out defrost operation to said condenser together.
2. Defrost method according to claim 1 is characterized in that, also comprises:
Only make the described sub-air-conditioning system that be in standby mode or refrigeration mode or dehumidification mode or air supply pattern that said condenser carried out defrost operation in the section transit time before said another sub-air-conditioning system gets into defrosting from heating mode.
3. Defrost method according to claim 2 is characterized in that, also comprises:
When two sub-air-conditioning systems all are in heating mode, after one of them sub-air-conditioning system gets into defrosting from heating mode, make these two sub-air-conditioning systems carry out defrost operation to said condenser together.
4. one drag two double-compressor air-conditioning system that adopts each said method of claim 1-3; Comprise: two independently sub-air-conditioning systems of a shared condenser; And in order to control the auxiliary defrosting control module that these two sub-air-conditioning systems defrost together
Wherein, said auxiliary defrosting control module has: the signal input part that is connected with the sensor that defrosts separately in two sub-air-conditioning systems, with in two sub-air-conditioning systems separately cross valve be connected in order to its output commutation signal signal output part.
5. air-conditioning system according to claim 4 is characterized in that, also comprises two temperature sensors, is installed in the port of two liquid refrigerants of said condenser respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210024337.7A CN102538327B (en) | 2012-02-03 | 2012-02-03 | Defrost method, adopt the one drag two double-compressor air-conditioning system of this Defrost method |
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| CN201210024337.7A CN102538327B (en) | 2012-02-03 | 2012-02-03 | Defrost method, adopt the one drag two double-compressor air-conditioning system of this Defrost method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103752145A (en) * | 2014-01-17 | 2014-04-30 | 北京正拓气体科技有限公司 | Gas condensing and dewatering system and method |
| CN103912958A (en) * | 2014-04-10 | 2014-07-09 | 安徽美芝精密制造有限公司 | Air conditioning system control method, air conditioning system control device and air conditioning system |
| CN104457047A (en) * | 2014-11-29 | 2015-03-25 | 刘雄 | Refrigeration equipment for air conditioner |
| CN106705478A (en) * | 2016-12-20 | 2017-05-24 | 珠海格力电器股份有限公司 | Hot gas bypass enhanced vapor injection air conditioning system |
| CN112577101A (en) * | 2019-09-11 | 2021-03-30 | 广东美的制冷设备有限公司 | Air conditioner and control method thereof |
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| JPS54142642A (en) * | 1978-04-28 | 1979-11-07 | Mitsubishi Electric Corp | Dual purpose (cooling & heating) air-conditioning unit |
| US4336692A (en) * | 1980-04-16 | 1982-06-29 | Atlantic Richfield Company | Dual source heat pump |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103752145A (en) * | 2014-01-17 | 2014-04-30 | 北京正拓气体科技有限公司 | Gas condensing and dewatering system and method |
| CN103752145B (en) * | 2014-01-17 | 2014-12-10 | 北京正拓气体科技有限公司 | Gas condensing and dewatering system and method |
| CN103912958A (en) * | 2014-04-10 | 2014-07-09 | 安徽美芝精密制造有限公司 | Air conditioning system control method, air conditioning system control device and air conditioning system |
| CN103912958B (en) * | 2014-04-10 | 2017-12-01 | 安徽美芝精密制造有限公司 | Control method, control device and the air-conditioning system of air-conditioning system |
| CN104457047A (en) * | 2014-11-29 | 2015-03-25 | 刘雄 | Refrigeration equipment for air conditioner |
| CN104457047B (en) * | 2014-11-29 | 2017-11-24 | 刘雄 | Operation of air conditioning systems |
| CN106705478A (en) * | 2016-12-20 | 2017-05-24 | 珠海格力电器股份有限公司 | Hot gas bypass enhanced vapor injection air conditioning system |
| CN106705478B (en) * | 2016-12-20 | 2022-04-19 | 珠海格力电器股份有限公司 | Hot gas bypass enhanced vapor injection air conditioning system |
| CN112577101A (en) * | 2019-09-11 | 2021-03-30 | 广东美的制冷设备有限公司 | Air conditioner and control method thereof |
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| CN102538327B (en) | 2016-06-29 |
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