CN101592387B - Method for controlling indoor machine during heating of multi-connected central air conditioner - Google Patents
Method for controlling indoor machine during heating of multi-connected central air conditioner Download PDFInfo
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- CN101592387B CN101592387B CN 200810053327 CN200810053327A CN101592387B CN 101592387 B CN101592387 B CN 101592387B CN 200810053327 CN200810053327 CN 200810053327 CN 200810053327 A CN200810053327 A CN 200810053327A CN 101592387 B CN101592387 B CN 101592387B
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Abstract
The invention discloses a method for controlling an indoor machine during the heating of a multi-connected central air conditioner, which comprises a starting and heating stage, a detection stage, an operation stage and a stopping stage. After heating, the exhaust temperature of a compressor of an outdoor machine is detected, and when the exhaust temperature of the compressor is smaller than a first set value, an electronic expansion valve is opened for a normal opening; when the exhaust temperature of the compressor is larger than the first set valve, an indoor electronic expansion valve without participating in the heating is controlled to open from the normal opening up to an opening of 130 degrees; the exhaust temperature of the compressor is detected again, and when the exhaust temperature of the compressor is smaller than a second set value, the electronic expansion valve is opened to the normal opening; and when the exhaust temperature of the compressor is larger than the second set value, the indoor electronic expansion valve is opened within the range of the normal opening. The method has the advantages that the opening of the indoor electronic expansion valve is controlled by detecting the exhaust temperature of the compressor so as to effectively restrain cooling media from accumulating in the indoor machine which is not operated and ensure that the air conditioner is operated with high performance, thus the heating efficiency can be greatly improved.
Description
Technical field
The present invention relates to a kind of multiple air-conditioner, particularly relate to a kind of cold-producing medium that when heating, can prevent and accumulate in the control method of the multiple air-conditioner indoor machine during heating in the off-duty indoor set.
Background technology
Usually air-conditioner is made up of heater, refrigeration machine, clarifier etc., can or purify for room air refrigeration or heating, for the user creates suitable indoor environment.
Need to arrange two in the family when with means for air conditioner or in having the building of a plurality of offices, in every office an air-conditioner being set, can be suitable for the multiple air-conditioner effectively.The multiple air-conditioner has the indoor set that an off-premises station and Duo Tai are connected with described off-premises station, and its effect is with that many detachable air conditioners are set respectively is the same.
During air-conditioner work, low pressure, low-temperature refrigerant steam in the refrigeration system are sucked by compressor, drain into condenser behind the compressed superheated steam for high pressure, high temperature; Simultaneously the outdoor air that sucks of the outside fan condenser of flowing through is taken away the cold-producing medium liberated heat, makes the refrigerant vapour of high pressure, high temperature be condensed into highly pressurised liquid.Highly pressurised liquid process throttle capillary tube step-down cooling inflow evaporator, and under corresponding low pressure, evaporating, ambient heat drawn; Simultaneously the indoor fan constantly enters between the fin of evaporimeter room air to carry out heat exchange, and is sent to the gas that turns cold after the heat release indoor.So, indoor-outdoor air constantly circulates, and reaches the purpose that reduces temperature.
Change the loop direction of cold-producing medium during air conditioner heat-production by reversal valve, become evaporimeter when heating as the indoor coil of evaporimeter when making original refrigeration work, refrigeration system is in outdoor heat absorption like this, and indoor heat release realizes the purpose that heats.
But when existing multiple air-conditioner operates in heating mode, be not that all indoor sets all heat requirement, when the room indoor set is not worked, the open degree of off-duty indoor set electric expansion valve is about 30, along with having cold-producing medium, the work of compressor flows into indoor set, when the cold-producing medium that accumulates in indoor set more for a long time, can influence the heating effect of other indoor set.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the shortcoming of prior art, provides a kind of air-conditioner under heating mode, prevents that cold-producing medium from accumulating in the indoor set that does not participate in turning round.
The technical solution adopted in the present invention is: a kind of control method of multiple air-conditioner indoor machine during heating under heating mode, comprises with the next stage: startup heats the stage; Detection-phase; Operation phase and stop phase.
Described detection-phase, operation phase and stop phase comprise the detection of compressor of outdoor unit delivery temperature, when compressor exhaust temperature sets value less than the 1st, and the normal aperture of electronic expansion opening of valves; When compressor exhaust temperature set value greater than the 1st, control had neither part nor lot in the indoor electric expansion valve unlatching that heats and rises to 130 apertures by normal aperture; Detect compressor exhaust temperature again, when compressor exhaust temperature set value less than the 2nd, electric expansion valve was opened into normal aperture, and when compressor exhaust temperature set value greater than the 2nd, indoor electric expansion valve was opened into normal aperture.
The detection of compressor of outdoor unit delivery temperature, when compressor exhaust temperature less than 70 °, 30 ° of electronic expansion openings of valves; Compressor exhaust temperature is during greater than 70 °, and the electronic expansion opening of valves of control off-duty indoor set is risen to 130 apertures by 30 apertures; Again to the detection of compressor of outdoor unit delivery temperature, when compressor exhaust temperature during less than 65 °, 30 ° of electronic expansion openings of valves, when compressor exhaust temperature during greater than 65 °, indoor electric expansion valve is opened into 30 °.
The invention has the beneficial effects as follows: by detecting the delivery temperature of compressor, the open degree of control indoor set expansion valve effectively suppresses refrigerant and accumulates in the indoor set that does not turn round, and makes the air-conditioner high performance operation, and heating efficiency can significantly improve.
Description of drawings
Fig. 1 is the operation block diagram under the multiple air-conditioner heating mode of the present invention.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail:
Fig. 1 is the operation block diagram under the multiple air-conditioner heating mode of the present invention.
As shown in Figure 1, the control method of multiple air-conditioner indoor machine during heating of the present invention under heating mode, comprises with the next stage: startup heats the stage; Detection-phase; Operation phase and stop phase.Described detection-phase, operation phase and stop phase comprise the normal startup of air-conditioner, this moment, indoor set had only those indoor sets that demand of heating is arranged to start, the indoor set that has neither part nor lot in running also has the part cold-producing medium and flows into, at this moment, under normal start-up mode, need the compressor of outdoor unit delivery temperature is detected, when compressor exhaust temperature sets value less than the 1st, the normal aperture of electronic expansion opening of valves; Because the performance difference of air-conditioner, the best heating effect of compressor can be different, the 1st setting value is compression mechanism thermal effect optimum temperature value, when compressor exhaust temperature sets value greater than the 1st, have neither part nor lot in the indoor electronic expansion valve events that heats and rise to 130 degree by normal aperture, make inflow have neither part nor lot in the refrigerant that heats in the indoor set and sucked; At this moment, need detect compressor exhaust temperature again, when compressor exhaust temperature sets value less than the 2nd, be the delivery temperature of air conditioner heat-production ability when relatively poor, electric expansion valve recovers normal aperture, when compressor exhaust temperature set value greater than the 2nd, the electric expansion valve of indoor set returned to normal opening.So circulation makes air-conditioner remain at the best state that heats.The setting of the aperture of compressor exhaust temperature setting value, indoor electric expansion valve is to set according to the overall performance of air-conditioner.
The 2nd setting value is less than the 1st setting value, prevents the misoperation of generation when air-conditioning runs well, and causes the indoor set electric expansion valve to open too frequently.
Embodiment 1: air-conditioner starts and to begin to heat, and the compressor of off-premises station is carried out the detection of delivery temperature, when compressor exhaust temperature less than 70 °, control has neither part nor lot in 30 ° of the indoor set electronic expansion openings of valves that heat; When compressor exhaust temperature during greater than 70 °, the electronic expansion opening of valves of the off-duty indoor set of control is risen to 130 apertures by 30 apertures, make to flow into to have neither part nor lot in the refrigerant that heats in the indoor set and sucked; Again to the detection of compressor of outdoor unit delivery temperature, when compressor exhaust temperature during less than 65 °, control has neither part nor lot in 30 ° of the indoor set electronic expansion openings of valves that heat, and compressor exhaust temperature is during greater than 65 °, and the electric expansion valve of indoor set recovers in 30 aperture scopes.
It is worthy of note; protection scope of the present invention is not limited to above-mentioned instantiation mode, according to basic fundamental design of the present invention, as long as those of ordinary skills need not through creative work; the embodiment that can associate all belongs to protection scope of the present invention.
Claims (1)
1. the control method of a multiple air-conditioner indoor machine during heating is characterized in that: under heating mode, comprise with the next stage: start and heat the stage; Detection-phase; Operation phase and stop phase; Described detection-phase, operation phase and stop phase comprise the detection of compressor of outdoor unit delivery temperature, when compressor exhaust temperature sets value less than the 1st, have neither part nor lot in the indoor electric expansion valve that heats and open normal aperture; When compressor exhaust temperature set value greater than the 1st, control had neither part nor lot in the indoor electric expansion valve unlatching that heats and rises to 130 apertures by normal aperture; Detect compressor exhaust temperature again, when compressor exhaust temperature sets value less than the 2nd, have neither part nor lot in the indoor electric expansion valve that heats and be opened into normal aperture, when compressor exhaust temperature sets value greater than the 2nd, have neither part nor lot in the indoor electric expansion valve that heats and be opened into normal aperture.
2. the control method of multiple air-conditioner indoor machine during heating according to claim 1, it is characterized in that: the detection of compressor of outdoor unit delivery temperature, when compressor exhaust temperature less than 70 °, have neither part nor lot in the indoor electric expansion valve that heats and open 30 apertures; Compressor exhaust temperature is during greater than 70 °, control had neither part nor lot in the indoor electric expansion valve that heats open and rise to 130 apertures by 30 apertures; Again to the detection of compressor of outdoor unit delivery temperature, when compressor exhaust temperature during less than 65 °, have neither part nor lot in indoor electronic expansion opening of valves 30 apertures that heat, when compressor exhaust temperature during greater than 65 °, have neither part nor lot in the indoor electric expansion valve that heats and be opened into 30 apertures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810053327 CN101592387B (en) | 2008-05-29 | 2008-05-29 | Method for controlling indoor machine during heating of multi-connected central air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200810053327 CN101592387B (en) | 2008-05-29 | 2008-05-29 | Method for controlling indoor machine during heating of multi-connected central air conditioner |
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| Publication Number | Publication Date |
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| CN101592387A CN101592387A (en) | 2009-12-02 |
| CN101592387B true CN101592387B (en) | 2013-09-25 |
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| CN 200810053327 Expired - Fee Related CN101592387B (en) | 2008-05-29 | 2008-05-29 | Method for controlling indoor machine during heating of multi-connected central air conditioner |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5404487B2 (en) * | 2010-03-23 | 2014-01-29 | 三菱電機株式会社 | Multi-room air conditioner |
| CN101949570B (en) * | 2010-09-09 | 2012-10-10 | 宁波奥克斯电气有限公司 | Starting control method for direct-current variable frequency air conditioner operating any units |
| CN102032648B (en) * | 2010-12-07 | 2012-12-05 | 海信（山东）空调有限公司 | Refrigerant flow control method for multi-connected air-conditioning system during heating |
| CN102252475B (en) * | 2011-05-06 | 2012-10-10 | 宁波奥克斯电气有限公司 | Method for adjusting electronic expansion valve of turned-off indoor unit during heating of VRV (Varied Refrigerant Volume) air-conditioning system |
| CN106123117A (en) * | 2016-06-29 | 2016-11-16 | 青岛海尔空调电子有限公司 | A kind of air conditioning unit and control method of multi-connected machine |
| CN106440198B (en) * | 2016-09-26 | 2019-07-26 | 广东美的暖通设备有限公司 | The detection method of the throttle valve body of the indoor unit of air-conditioning system |
| CN108224739B (en) * | 2017-12-01 | 2020-08-18 | 青岛海尔空调电子有限公司 | Noise control method of multi-connected air conditioning system |
| CN109059226B (en) * | 2018-07-09 | 2020-04-21 | 广东美的制冷设备有限公司 | Control method of electronic expansion valve, air conditioner and computer readable storage medium |
| CN110186149B (en) * | 2019-05-31 | 2021-12-07 | 广东美的制冷设备有限公司 | Operation control method, control device, air conditioner, and computer-readable storage medium |
| CN110332648B (en) * | 2019-07-22 | 2021-12-21 | 宁波奥克斯电气股份有限公司 | Control method and device of electronic expansion valve and multi-connected air conditioning system |
| CN112797580A (en) * | 2020-12-31 | 2021-05-14 | 青岛海尔空调电子有限公司 | Control method of multi-split air conditioner and multi-split air conditioner |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5237833A (en) * | 1991-01-10 | 1993-08-24 | Mitsubishi Denki Kabushiki Kaisha | Air-conditioning system |
| JP3322684B2 (en) * | 1992-03-16 | 2002-09-09 | 東芝キヤリア株式会社 | Air conditioner |
| KR100333395B1 (en) * | 1999-06-28 | 2002-04-24 | 윤종용 | low-temperature control operation method of multitude-type air conditioner |
| CN101086366A (en) * | 2006-06-06 | 2007-12-12 | 乐金电子(天津)电器有限公司 | Multi-split air conditioner and control method thereof |
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