CN101469926A - Improved air conditioner defrosting system and its control method - Google Patents
Improved air conditioner defrosting system and its control method Download PDFInfo
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- CN101469926A CN101469926A CNA2007101737320A CN200710173732A CN101469926A CN 101469926 A CN101469926 A CN 101469926A CN A2007101737320 A CNA2007101737320 A CN A2007101737320A CN 200710173732 A CN200710173732 A CN 200710173732A CN 101469926 A CN101469926 A CN 101469926A
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- heat exchanger
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- defrosting
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Abstract
An improved air conditioner defrosting system comprises a compressor, outdoor heat exchanging systems, an indoor heat exchanger, a four-way valve and a throttle valve, the outdoor heat exchanging systems are at least two sets, the outdoor heat exchanging systems are connected in parallel between the four-way valve and a primary throttle valve connected with the indoor heat exchanger and are separated by a baffle. Two ends of the primary throttle valve are connected in parallel with an electromagnetic valve, the control method comprises that, the defrosting judging condition is that the temperature sensed by the sensor on an outlet of a first outdoor heat exchanger or a second outdoor heat exchanger reaches to the setting temperature; at the moment, the sensor is special for defrosting and is different from the sensor in the outdoor coil pipe. When the temperature sensed by the sensor on the outlet of the first outdoor heat exchanger or the second outdoor heat exchanger is lower than the setting temperature, delaying for a certain time, namely the defrosting operating condition is entered. The invention has the following characteristics, when entering the defrosting and completing the defrosting, only opening or closing the related electromagnetic valve can complete the mode conversion, compressor continuous operation and four-way valve no actuating; the invention can avoid the electric network impact and can improve the operation rate of the machine unit.
Description
Technical field
The invention belongs to air-conditioning technical field, relate to defrost system.
Background technology
The common air-conditioning system will stop compressor earlier when entering defrosting operating condition, restart after making the pressure balance of compressor suction/exhaust both sides; And defrosting also will stop compressor after finishing again, starts once more after the pressure balance to enter heating mode.Compressor leaves/stops in the process, can form electrical network to impact, and influences the operation of consumer; And compressor restarts also to form machinery, the electric component of air-conditioning system itself and impacts, and shortens the service life of air-conditioning equipment; In addition, the conversion of frequent heating/defrosting mode can reduce the heating operation rate of unit, influences the result of use of air-conditioning system.
Particularly, as shown in Figure 1, the common air-conditioning system comprises compressor 11, outdoor heat exchanger 12, indoor heat exchanger 13, four-way change-over valve 14, restricting element 15, become high temperature and high pressure gas after compressed machine 11 compressions of low-pressure low-temperature cold-producing medium, enter condenser, isobaric heat release became cold anticyclone liquid; Behind choke valve, pressure reduces, and the partially liq shwoot forms the low temperature gas-liquid mixture that contains a small amount of gas; Enter evaporimeter and absorb heat, become low-pressure low-temperature gas, return compressor 11, so circulation.When entering defrosting operating condition, stop compressor 11 earlier, restart after making the pressure balance of compressor 11 suction/exhaust both sides; Stop compressor 11 after the defrosting fully, start once more after the pressure balance and enter heating mode.
When entering defrosting operating condition, because compressor 11 pressure at both sides imbalances, cross valve 14 must commutate under the compressor shutdown situation and change operational mode; Impact otherwise can form, cause damage compressor 11, valve member and pipe fitting.But stop/hold the compressor process and can form impact, influence the compressor life-span, and reduce the operation ratio of air-conditioning system electrical network.
Summary of the invention
The object of the present invention is to provide a kind of improved air conditioner defrosting system, can under the state of compressor operating, defrost.
For reaching above purpose, solution of the present invention is:
Improved air conditioner defrosting system, comprise: compressor, outdoor heat exchange system, indoor heat exchanger, cross valve, choke valve, the outdoor heat exchange system is at least two covers, and this outdoor heat exchange system also is connected between the primary throttle valve that cross valve reaches with indoor heat exchanger links to each other, by a dividing plate separately.
Further: the two ends of this primary throttle valve also are connected with a magnetic valve.
This outdoor heat exchange system is two covers, comprise first outdoor heat exchanger, first outdoor fan, second outdoor heat exchanger, second outdoor fan, two cover outdoor heat exchange systems also are connected between the primary throttle valve that cross valve reaches with indoor heat exchanger links to each other, by a dividing plate separately.
The two ends of this first outdoor heat exchanger and second outdoor heat exchanger respectively are serially connected with magnetic valve, a join end and second outdoor heat exchanger and primary throttle valve of first outdoor heat exchanger and cross valve joins and is connected to defrosting choke valve and magnetic valve between the end, and a join end and second outdoor heat exchanger and cross valve of first outdoor heat exchanger and primary throttle valve joins and also be connected to defrosting choke valve and magnetic valve between the end.
The control method of above-mentioned improved air conditioner defrosting system, defrosting Rule of judgment be under the heating condition first outdoor heat exchanger or the second outdoor heat exchanger exit sensor senses to temperature reach design temperature; Sensor herein is special-purpose for defrosting, and is different with the sensor at outdoor coil pipe used middle part.
When first outdoor heat exchanger and second outdoor heat exchanger reach the defrosting condition simultaneously, can set the defrosting of carrying out first outdoor heat exchanger earlier; Enter the defrosting of second outdoor heat exchanger behind first outdoor heat exchanger defrosting finishing certain hour.
Defrosting design temperature, the time interval are set according to running environment and system situation.
Owing to adopted such scheme, the present invention to have following characteristics: when entering defrosting and finishing defrosting, only just can finish the pattern conversion by the ON/OFF associated solenoid valve, compressor moves continuously, and cross valve is failure to actuate; Avoid electrical network to impact and improve the operation ratio of unit.
Description of drawings
Fig. 1 is existing air conditioner defrosting system structural representation.
Fig. 2 is the refrigeration cycle structure schematic diagram of the embodiment of the invention.
Fig. 3 heats the loop structure schematic diagram for the embodiment of the invention.
Fig. 4 is the structural representation of the embodiment of the invention first outdoor heat exchanger defrosting.
Fig. 5 is the structural representation of the embodiment of the invention second outdoor heat exchanger defrosting.
The specific embodiment
The present invention is further illustrated below in conjunction with the accompanying drawing illustrated embodiment.
Shown in Fig. 2-5, the present invention includes first outdoor fan 1, first outdoor heat exchanger 2, compressor 3, indoor heat exchanger 4, magnetic valve 51-57, choke valve 61-63, second outdoor fan 7, second outdoor heat exchanger 8, cross valve 9, dividing plate 10.Dotted portion among the figure represents not have the refrigerant flow line.
The present invention has the air-cooled heat pump air-conditioning system of independent non-interference blower fan applicable to 2 of any employings/group outdoor heat exchanger and each/group outdoor heat exchanger.The relative position of critical piece such as compressor, outdoor heat exchanger does not need change substantially; Only increase magnetic valve, throttle part and corresponding control element and can reach function of the present invention.As shown in Figure 2, separate by dividing plate 10 between 2 groups of outdoor heat exchanger systems.Increase magnetic valve 51,53 in the both sides of first outdoor heat exchanger 2 and increased magnetic valve 52,54 in the both sides of second outdoor heat exchanger 7, in parallel defrosting choke valve 63 and magnetic valve 55 between the two ends of first outdoor heat exchanger 2 that connects magnetic valve 51,54 respectively and second outdoor heat exchanger 7, in parallel defrosting choke valve 62 and magnetic valve 56 between the two ends of first outdoor heat exchanger 2 that connects magnetic valve 53,52 respectively and second outdoor heat exchanger 7, in primary throttle valve 61 two ends parallel connections magnetic valve 57.The indoor heat exchanger of mentioning among the present invention can be cold/hot blast or cold/hot water type.
Outdoor heat exchanger is that two parts are formed, and structure is identical, and outdoor fan and air channel structure (as Fig. 2) are independently mutually arranged independently.Suppose that first outdoor heat exchanger 2 at first reaches the Defrost operation condition, magnetic valve 51,54,56 cuts out, magnetic valve 52,53,55,57 is opened (as Fig. 4), suitable rotating speed is closed or be adjusted to indoor fan, and (operational situation of fan is by indoor heat exchanger 4 outlet temperature ti decision, and design temperature is ts, as ti＜ts, indoor fan shuts down, ti〉during ts, the indoor fan low-speed running), second outdoor fan, 7 high-speed cruisings; (see figure 4) primary throttle valve 61 is by short circuit, do not play throttling action, after high temperature and high pressure gas enters indoor heat exchanger 4, the uncooled gas of part enters first outdoor heat exchanger 2 (this moment, the frost of heat exchanger surface began to melt), fully becomes low pressure, low temperature liquid by magnetic valve 55 after the condensation, enters second outdoor heat exchanger 8, the evaporation of absorption chamber outer air, enter compressor 3 again, become high temperature and high pressure gas, finish once circulation.During 8 defrostings of second outdoor heat exchanger, the same (see figure 5) of principle.
The defrosting condition can judge according to control logic, and defrosting Rule of judgment of the present invention is that the temperature that first outdoor heat exchanger or second outdoor heat exchanger exit sensor (SENSOR) perceive under the heating condition reaches design temperature; Sensor herein is special-purpose for defrosting, will distinguish with the sensor at outdoor coil pipe used middle part.The temperature that collects when the sensor in first outdoor heat exchanger 2 or second outdoor heat exchanger, 8 exits is lower than design temperature and the certain hour of delaying time, and promptly enters defrosting operating condition.General defrosting design temperature is-5 to-8 ℃ (can set according to running environment), delay time about 5 minutes (can set according to running environment); When first outdoor heat exchanger 2 and second outdoor heat exchanger 8 reached the defrosting condition simultaneously, program can be set the defrosting of carrying out first outdoor 2 heat exchangers earlier; The first outdoor 2 heat exchangers defrosting finishes and entered 8 defrostings of second outdoor heat exchanger in 10 minutes after (can set according to system situation), and these all can be by program setting.
In addition, though more than be to be example with two cover outdoor heat exchange systems, in fact the present invention can comprise the above outdoor heat exchange of two covers system, this does not give unnecessary details.
The above-mentioned description to embodiment is can understand and apply the invention for ease of those skilled in the art.The person skilled in the art obviously can easily make various modifications to these embodiment, and needn't pass through performing creative labour being applied in the General Principle of this explanation among other embodiment.Therefore, the invention is not restricted to the embodiment here, those skilled in the art should be within protection scope of the present invention for improvement and modification that the present invention makes according to announcement of the present invention.
Claims (7)
1, improved air conditioner defrosting system, it is characterized in that: comprising: compressor, outdoor heat exchange system, indoor heat exchanger, cross valve, choke valve, the outdoor heat exchange system is at least two covers, this outdoor heat exchange system also is connected between the primary throttle valve that cross valve reaches with indoor heat exchanger links to each other, by a dividing plate separately.
2, improved air conditioner defrosting system according to claim 1 is characterized in that: the two ends of this primary throttle valve also are connected with a magnetic valve.
3, improved air conditioner defrosting system according to claim 1, it is characterized in that: this outdoor heat exchange system is two covers, comprise first outdoor heat exchanger, first outdoor fan, second outdoor heat exchanger, second outdoor fan, two cover outdoor heat exchange systems also are connected between the primary throttle valve that cross valve reaches with indoor heat exchanger links to each other, by a dividing plate separately.
4, improved air conditioner defrosting system according to claim 3, it is characterized in that: the two ends of this first outdoor heat exchanger and second outdoor heat exchanger respectively are serially connected with magnetic valve, a join end and second outdoor heat exchanger and primary throttle valve of first outdoor heat exchanger and cross valve joins and is connected to defrosting choke valve and magnetic valve between the end, and a join end and second outdoor heat exchanger and cross valve of first outdoor heat exchanger and primary throttle valve joins and also be connected to defrosting choke valve and magnetic valve between the end.
5, the control method of arbitrary described improved air conditioner defrosting system in the claim 1 to 4 is characterized in that: the defrosting Rule of judgment be under the heating condition first outdoor heat exchanger or the second outdoor heat exchanger exit sensor senses to temperature reach design temperature; Sensor herein is special-purpose for defrosting, and is different with the sensor at outdoor coil pipe used middle part.
6, control method according to claim 5 is characterized in that: when first outdoor heat exchanger and second outdoor heat exchanger reach the defrosting condition simultaneously, can set the defrosting of carrying out first outdoor heat exchanger earlier; Enter the defrosting of second outdoor heat exchanger behind first outdoor heat exchanger defrosting finishing certain hour.
7, control method according to claim 5 is characterized in that: defrosting design temperature, the time interval are set according to running environment and system situation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710173732A CN101469926B (en) | 2007-12-29 | 2007-12-29 | Improved air conditioner defrosting system and its control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710173732A CN101469926B (en) | 2007-12-29 | 2007-12-29 | Improved air conditioner defrosting system and its control method |
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| CN101469926A true CN101469926A (en) | 2009-07-01 |
| CN101469926B CN101469926B (en) | 2012-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200710173732A Expired - Fee Related CN101469926B (en) | 2007-12-29 | 2007-12-29 | Improved air conditioner defrosting system and its control method |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706053A (en) * | 2011-03-28 | 2012-10-03 | Lg电子株式会社 | Outdoor unit of air conditioner and method for controlling the same |
| CN103759456A (en) * | 2014-01-27 | 2014-04-30 | 平武臣 | Heat exchange system of air conditioner or heat pump and defrosting method of heat exchange system |
| CN104132488A (en) * | 2014-07-24 | 2014-11-05 | 康特能源科技(苏州)有限公司 | Air source heat pump defrosting device and method |
| CN105004114A (en) * | 2015-07-02 | 2015-10-28 | Tcl空调器(中山)有限公司 | Air conditioner and defrosting method thereof |
| CN105066255A (en) * | 2015-09-01 | 2015-11-18 | 珠海格力电器股份有限公司 | Air conditioning system with continuous heat supply function in defrosting process |
| CN105091437A (en) * | 2015-08-28 | 2015-11-25 | 合肥美菱股份有限公司 | Automatic defrosting system for air cooling refrigerator and control method of automatic defrosting system |
| CN105091421A (en) * | 2015-08-06 | 2015-11-25 | 美的集团武汉制冷设备有限公司 | Refrigerant circulation system and air conditioner system |
| CN105091200A (en) * | 2014-05-15 | 2015-11-25 | 广东美的暖通设备有限公司 | Air conditioner control method |
| CN105588359A (en) * | 2015-01-30 | 2016-05-18 | 海信（山东）空调有限公司 | Air conditioning system |
| CN106839312A (en) * | 2017-02-06 | 2017-06-13 | 邯郸美的制冷设备有限公司 | The control method and control device and air-conditioner of defrost are not shut down |
| CN107525220A (en) * | 2017-07-31 | 2017-12-29 | 青岛海尔空调器有限总公司 | Air conditioner and its outdoor unit automatically cleaning control method |
| CN107796146A (en) * | 2017-10-20 | 2018-03-13 | 珠海格力电器股份有限公司 | Condenser system, air-conditioning system and control method |
| CN109974203A (en) * | 2019-03-06 | 2019-07-05 | 青岛海信日立空调***有限公司 | A kind of Defrost method and air conditioner of air conditioner |
| CN110030757A (en) * | 2019-03-26 | 2019-07-19 | 青岛海尔空调电子有限公司 | Multi-gang air-conditioner and its control method |
| CN111473475A (en) * | 2020-05-29 | 2020-07-31 | 刘兵兵 | Energy-saving air conditioner circulating system with automatic defrosting function and control method |
| CN111664549A (en) * | 2020-06-10 | 2020-09-15 | 青岛海信日立空调***有限公司 | Air conditioner |
| CN112248756A (en) * | 2020-11-12 | 2021-01-22 | 东北石油大学 | Control method and device for heat pump air conditioner, electronic device, storage medium and vehicle |
| WO2021169261A1 (en) * | 2020-02-26 | 2021-09-02 | 浙江中广电器股份有限公司 | Air conditioner and control method for achieving defrosting during heating thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3671850B2 (en) * | 2001-03-16 | 2005-07-13 | 三菱電機株式会社 | Refrigeration cycle |
| CN200955881Y (en) * | 2006-01-05 | 2007-10-03 | 南京天加空调设备有限公司 | Continuous defrosting and heating air source heat pump |
-
2007
- 2007-12-29 CN CN200710173732A patent/CN101469926B/en not_active Expired - Fee Related
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706053B (en) * | 2011-03-28 | 2015-07-22 | Lg电子株式会社 | Outdoor unit of air conditioner and method for controlling the same |
| CN102706053A (en) * | 2011-03-28 | 2012-10-03 | Lg电子株式会社 | Outdoor unit of air conditioner and method for controlling the same |
| US9435548B2 (en) | 2011-03-28 | 2016-09-06 | Lg Electronics Inc. | Outdoor unit of air conditioner and method for controlling the same |
| CN103759456A (en) * | 2014-01-27 | 2014-04-30 | 平武臣 | Heat exchange system of air conditioner or heat pump and defrosting method of heat exchange system |
| CN105091200A (en) * | 2014-05-15 | 2015-11-25 | 广东美的暖通设备有限公司 | Air conditioner control method |
| CN105091200B (en) * | 2014-05-15 | 2018-02-06 | 广东美的暖通设备有限公司 | The control method of air conditioner |
| CN104132488A (en) * | 2014-07-24 | 2014-11-05 | 康特能源科技(苏州)有限公司 | Air source heat pump defrosting device and method |
| CN105588359A (en) * | 2015-01-30 | 2016-05-18 | 海信（山东）空调有限公司 | Air conditioning system |
| CN105004114A (en) * | 2015-07-02 | 2015-10-28 | Tcl空调器(中山)有限公司 | Air conditioner and defrosting method thereof |
| CN105091421A (en) * | 2015-08-06 | 2015-11-25 | 美的集团武汉制冷设备有限公司 | Refrigerant circulation system and air conditioner system |
| CN105091437A (en) * | 2015-08-28 | 2015-11-25 | 合肥美菱股份有限公司 | Automatic defrosting system for air cooling refrigerator and control method of automatic defrosting system |
| CN105066255A (en) * | 2015-09-01 | 2015-11-18 | 珠海格力电器股份有限公司 | Air conditioning system with continuous heat supply function in defrosting process |
| CN106839312A (en) * | 2017-02-06 | 2017-06-13 | 邯郸美的制冷设备有限公司 | The control method and control device and air-conditioner of defrost are not shut down |
| CN107525220A (en) * | 2017-07-31 | 2017-12-29 | 青岛海尔空调器有限总公司 | Air conditioner and its outdoor unit automatically cleaning control method |
| WO2019024721A1 (en) * | 2017-07-31 | 2019-02-07 | 青岛海尔空调器有限总公司 | Air conditioner and self-cleaning control method for outdoor unit thereof |
| CN107525220B (en) * | 2017-07-31 | 2020-11-27 | 青岛海尔空调器有限总公司 | Air conditioner and outdoor unit self-cleaning control method thereof |
| CN107796146A (en) * | 2017-10-20 | 2018-03-13 | 珠海格力电器股份有限公司 | Condenser system, air-conditioning system and control method |
| CN107796146B (en) * | 2017-10-20 | 2023-12-15 | 珠海格力电器股份有限公司 | Condensing system, air conditioning system and control method |
| CN109974203A (en) * | 2019-03-06 | 2019-07-05 | 青岛海信日立空调***有限公司 | A kind of Defrost method and air conditioner of air conditioner |
| CN109974203B (en) * | 2019-03-06 | 2021-03-23 | 青岛海信日立空调***有限公司 | Defrosting method of air conditioner and air conditioner |
| CN110030757A (en) * | 2019-03-26 | 2019-07-19 | 青岛海尔空调电子有限公司 | Multi-gang air-conditioner and its control method |
| WO2021169261A1 (en) * | 2020-02-26 | 2021-09-02 | 浙江中广电器股份有限公司 | Air conditioner and control method for achieving defrosting during heating thereof |
| CN111473475A (en) * | 2020-05-29 | 2020-07-31 | 刘兵兵 | Energy-saving air conditioner circulating system with automatic defrosting function and control method |
| CN111664549A (en) * | 2020-06-10 | 2020-09-15 | 青岛海信日立空调***有限公司 | Air conditioner |
| CN111664549B (en) * | 2020-06-10 | 2023-09-12 | 青岛海信日立空调***有限公司 | air conditioner |
| CN112248756A (en) * | 2020-11-12 | 2021-01-22 | 东北石油大学 | Control method and device for heat pump air conditioner, electronic device, storage medium and vehicle |
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| CN101469926B (en) | 2012-09-05 |
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