CN104535884A - Method for judging whether indoor machine data line of domestic multi-split unit is wrongly connected - Google Patents
Method for judging whether indoor machine data line of domestic multi-split unit is wrongly connected Download PDFInfo
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- CN104535884A CN104535884A CN201410836818.7A CN201410836818A CN104535884A CN 104535884 A CN104535884 A CN 104535884A CN 201410836818 A CN201410836818 A CN 201410836818A CN 104535884 A CN104535884 A CN 104535884A
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Abstract
The invention discloses a method for judging whether an indoor machine data line of a domestic multi-split unit is wrongly connected. The method comprises the steps that N indoor machines are provided, one indoor machine is subjected to starting cooling operation, two temperature values of temperature Tem of the middle portion of a coil pipe and temperature Tq of a thin pipe temperature sensor (1), whether the two temperature values are lowered by at least 3 DEG C is judged, if yes, the indoor machine is turned off, and a next indoor machine is detected; if the detected indoor machines all meet the conditions, detecting is carried out continuously, until the fact that after the <N-1>th indoor machine carries out cooling operation for the same time, the two temperature values of Tem and Tq are lowered by at least 3 DEG C is judged, the conclusion that data lines of all indoor machines of a unit are not wrongly corrected; and if the two temperature values of one indoor machine are not lowered sufficiently, the fact that a fault happens is judged, at the time, all indoor machines which are not started are detected, and the two temperature values of one indoor machine are lowered by at least 3 DEG C, the fact that the indoor machine is in fault is judged. The method is quick, convenient to use and accurate.
Description
Technical field
The present invention relates to domestic multi-connection formula air-conditioner set, is specifically the method for a kind of indoor set data line judging domestic multi-connection machine whether wrong.
Background technology
The VRF Air Conditioning System of prior art is called for short multi-connected machine, and wherein the multi-connected machine of household is relatively simple for structure, only has an off-premises station and several indoor sets few in number.Off-premises station is communicated with the multiple indoor sets after parallel connection.
Domestic multi-connection machine comprises the compressor of a frequency conversion, four-way change-over valve, outdoor heat exchanger (being condenser during refrigeration), multiple electric expansion valve and multiple indoor heat exchangers identical with electric expansion valve number (being evaporator during refrigeration).Compressor outlet is communicated with the first valve port of four-way change-over valve, four-way change-over valve second valve port is communicated with outdoor heat exchanger one end, the outdoor heat exchanger other end is communicated with one end of whole electric expansion valves in parallel, the other end of each electric expansion valve is communicated with one end of an indoor heat exchanger, the other end of whole indoor heat exchangers in parallel is all communicated with four-way change-over valve the 3rd valve port, and four-way change-over valve the 4th valve port is communicated with suction port of compressor.
During refrigeration mode, the first valve port of four-way change-over valve is communicated with the second valve port, and the 3rd valve port is communicated with the 4th valve port, and namely refrigerant is along compressor, outdoor heat exchanger, electric expansion valve, indoor heat exchanger, the circulation of this route of compressor.
Compressor, four-way change-over valve, outdoor heat exchanger and electric expansion valve belong to outdoor machine part, and indoor heat exchanger belongs to indoor set part.Each indoor heat exchanger is connected with an electric expansion valve formation branch line, a capillary temperature sensor is equipped with between the electric expansion valve of each branch line and indoor heat exchanger, capillary temperature sensor still belongs to outdoor machine part, and multiple branch line be connected into by an electric expansion valve, a capillary temperature sensor and indoor heat exchanger is then parallel with one another.The coil temperature sensor measuring coil pipe middle portion temperature is provided with in the middle part of the coil pipe of each indoor heat exchanger.
Each indoor set comprises indoor heat exchanger, fan and signal receiver, and signal receiver is electrically connected with fan, and after user launches starting-up signal to certain indoor set, signal receiver receives and drives the fan running of this indoor set.And the signal receiver of each indoor set is connected through a signal wire with the master controller of air-conditioner set, this signal wire one end is connected with the signal receiver of an indoor set and the other end is connected with the interface on air-conditioning master controller, and each interface of master controller electric expansion valve corresponding with is electrically connected.Signal wire must access interface correct on master controller, signal wire as a indoor set must be connected with a interface of master controller, the signal wire of b indoor set must be connected with the b interface of master controller, once signal wire wrong interface, as received the b interface of master controller, user will be caused to send starting-up signal to a indoor set after, the starting fan of a indoor set, but the electric expansion valve of a indoor set is not opened, b indoor machine fan does not turn, but the electric expansion valve of b indoor set is opened, refrigerant is had to flow through.Make whole unit can not normal cooling and warming.But in practical operation, technician often due to carelessness wrong data line, by other interface in indoor set data line misconnection to master controller.
Summary of the invention
The technical problem to be solved in the present invention is, provide a kind of fast, the method for convenient, the indoor set data line that judges domestic multi-connection machine accurately whether wrong.
Technical solution of the present invention is, the method of a kind of indoor set data line judging domestic multi-connection machine whether wrong is provided, its step comprises: the number of units of indoor set is N platform, unit is switched to refrigeration mode, power-on command is sent to an indoor set, after running a period of time, detect these two temperature values of temperature Tq of the coil pipe middle portion temperature Tem of the indoor set of this start and the capillary temperature sensor corresponding to indoor set of this start, judge whether these two temperature values all decline more than 3 DEG C, if, then close this indoor set, by the time same for next indoor set refrigerating operaton, and judge whether Tem and Tq two temperature values of this indoor set decline more than 3 DEG C, if, after then continuing to judge next indoor set refrigerating operaton same time, whether Tem and Tq two temperature values decline more than 3 DEG C again, until Tem and Tq two temperature values all decline more than 3 DEG C after having judged the N-1 platform indoor set refrigerating operaton same time, the data line of the whole indoor set of this unit of then reaching a conclusion does not have wrong, if in above-mentioned testing process, any one amplitude declined after finding that there is an indoor set refrigerating operaton same time in Tem and Tq two temperature values is less than 3 DEG C, then judge the Fisrt fault indoor set of this indoor set as data line wrong, now, detect Tem and Tq two temperature values of all indoor sets of not starting shooting, wherein there are Tem and Tq two temperature values of an indoor set of not starting shooting all to decline more than 3 DEG C, then judge the second fault indoor set of this indoor set of not starting shooting as data line wrong.
The principle of this determination methods is: once the data line of certain indoor set is received on interface correct on air-conditioning primary controller, starting-up signal is sent out to this indoor set, electric expansion valve corresponding to this indoor set just can normally be opened, the branch line at the indoor heat exchanger place of this indoor set just has refrigerant flow through, the temperature on two positions of this branch line and the coil pipe middle portion temperature sensor of capillary temperature sensor and indoor heat exchanger will decline; And once the data line wrong of this indoor set, when launching starting-up signal, the electric expansion valve that this indoor set is corresponding would not be opened, the branch line at this indoor set place does not have refrigerant to flow through, nature can not be lowered the temperature, and electric expansion valve corresponding to an other indoor set can be opened, the branch line at another indoor set place can be lowered the temperature because refrigerant flows through.And wrong line two wrongs together often, so when detecting, N platform indoor set altogether, N-1 platform does not have wrong, and last is wrong unlikely; Once find that there is a wrong, that indoor set that all the other are not started shooting with regard to direct-detection, the indoor set of but lowering the temperature of wherein not starting shooting is exactly the indoor set of another wrong naturally.
Adopt above method, the indoor set data line that the present invention judges domestic multi-connection machine whether wrong method compared with prior art, have the following advantages:
This determination methods detection speed is fast, without the need to artificial, efficiency is high, testing result is accurate.
Accompanying drawing explanation
Fig. 1 is the systematic schematic diagram of the indoor set data line whether method of wrong that the present invention judges domestic multi-connection machine.
Shown in figure 1, capillary temperature sensor, 2, compressor, 3, outdoor heat exchanger, 4, coil temperature sensor, 5, branch line.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As shown in Figure 1, the method for the indoor set data line that the present invention judges domestic multi-connection machine whether wrong, its concrete steps are as follows.
The number of units of indoor set is N platform.Unit is switched to refrigeration mode, and send power-on command to an indoor set, the fan of this indoor set is opened, and the compressor 2 of off-premises station starts, and the fan of outdoor heat exchanger 3 is also opened.After running a period of time, after running 3 minutes, the temperature Tq of that capillary temperature sensor 1 on the branch line 5 at the indoor set place that the capillary temperature sensor 1 corresponding to indoor set of the coil pipe middle portion temperature Tem and this start that detect the coil temperature sensor 4 of the indoor set of this start is namely started shooting.Judge whether these two temperature values of Tem with Tq all decline more than 3 DEG C compared with when not starting shooting.If so, then closing this indoor set, by next time that namely second indoor set refrigerating operaton is same as run 3 minutes equally, and judging whether Tem and Tq two temperature values of this indoor set decline more than 3 DEG C.If so, then continue to judge again next is that after the 3rd indoor set refrigerating operaton same time, whether Tem and Tq two temperature values decline more than 3 DEG C.If started shooting and each indoor set detected satisfy condition all always, then continue to detect new indoor set always, until Tem and Tq two temperature values all decline more than 3 DEG C after having judged the N-1 platform indoor set refrigerating operaton same time, as 6 altogether, judged that 5 are all lowered the temperature more than 3 DEG C, then the data line of the whole indoor set of this unit of reaching a conclusion does not have wrong.Certainly, if detect N-1 platform indoor set wrong, then N platform also natural wrong.If in above-mentioned testing process, any one amplitude declined after finding that there is an indoor set refrigerating operaton same time in Tem and Tq two temperature values is less than 3 DEG C, as only decline 1 DEG C or Tq of Tem does not decline at all, then judge the Fisrt fault indoor set of this indoor set as data line wrong.Now, detect Tem and Tq two temperature values of all indoor sets of not starting shooting, wherein have Tem and Tq two temperature values of an indoor set of not starting shooting all to decline more than 3 DEG C, then judge the second fault indoor set of this indoor set of not starting shooting as data line wrong.
The detection speed of the method quickly, as long as detect an indoor set wiring faults, just without the need to continuing remaining indoor set of not starting shooting of refrigerating operaton, but in the indoor set relying on Tem and Tq two temperature values never to start shooting, directly find out the indoor set of another fault.
Claims (1)
1. the method for the indoor set data line judging domestic multi-connection machine whether wrong, it is characterized in that: its step is as follows: the number of units of indoor set is N platform, unit is switched to refrigeration mode, power-on command is sent to an indoor set, after running a period of time, detect these two temperature values of temperature Tq of the coil pipe middle portion temperature Tem of the indoor set of this start and the capillary temperature sensor (1) corresponding to indoor set of this start, judge whether these two temperature values all decline more than 3 DEG C, if, then close this indoor set, by the time same for next indoor set refrigerating operaton, and judge whether Tem and Tq two temperature values of this indoor set decline more than 3 DEG C, if, after then continuing to judge next indoor set refrigerating operaton same time, whether Tem and Tq two temperature values decline more than 3 DEG C again, until Tem and Tq two temperature values all decline more than 3 DEG C after having judged the N-1 platform indoor set refrigerating operaton same time, the data line of the whole indoor set of this unit of then reaching a conclusion does not have wrong, if in above-mentioned testing process, any one amplitude declined after finding that there is an indoor set refrigerating operaton same time in Tem and Tq two temperature values is less than 3 DEG C, then judge the Fisrt fault indoor set of this indoor set as data line wrong, now, detect Tem and Tq two temperature values of all indoor sets of not starting shooting, wherein there are Tem and Tq two temperature values of an indoor set of not starting shooting all to decline more than 3 DEG C, then judge the second fault indoor set of this indoor set of not starting shooting as data line wrong.
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| CN201410836818.7A CN104535884B (en) | 2014-12-29 | 2014-12-29 | Judge domestic multi-connection machine indoor set data wire whether the method for wrong |
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| CN201410836818.7A CN104535884B (en) | 2014-12-29 | 2014-12-29 | Judge domestic multi-connection machine indoor set data wire whether the method for wrong |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106594981A (en) * | 2016-11-30 | 2017-04-26 | 宁波奥克斯电气股份有限公司 | Dislocation detecting and self-repairing control method for temperature detectors of dual-compressor air conditioning system |
| CN107576024A (en) * | 2017-09-27 | 2018-01-12 | 广东美的暖通设备有限公司 | Fault detection method, the apparatus and system of multi-online air-conditioning system |
| CN110529992A (en) * | 2019-09-09 | 2019-12-03 | 广东美的暖通设备有限公司 | Air-conditioning system, the control method of air-conditioning system and computer readable storage medium |
| CN111306699A (en) * | 2020-03-03 | 2020-06-19 | 青岛海尔空调器有限总公司 | Method and device for controlling multi-split air conditioner and air conditioner |
| CN113124541A (en) * | 2021-04-14 | 2021-07-16 | 珠海格力电器股份有限公司 | Method and device for judging reverse connection of expansion valve, controller and air conditioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106594981A (en) * | 2016-11-30 | 2017-04-26 | 宁波奥克斯电气股份有限公司 | Dislocation detecting and self-repairing control method for temperature detectors of dual-compressor air conditioning system |
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| CN110529992A (en) * | 2019-09-09 | 2019-12-03 | 广东美的暖通设备有限公司 | Air-conditioning system, the control method of air-conditioning system and computer readable storage medium |
| CN111306699A (en) * | 2020-03-03 | 2020-06-19 | 青岛海尔空调器有限总公司 | Method and device for controlling multi-split air conditioner and air conditioner |
| WO2021174690A1 (en) * | 2020-03-03 | 2021-09-10 | 青岛海尔空调器有限总公司 | Method and apparatus for controlling multi-split air conditioner, and air conditioner |
| CN113124541A (en) * | 2021-04-14 | 2021-07-16 | 珠海格力电器股份有限公司 | Method and device for judging reverse connection of expansion valve, controller and air conditioner |
| CN113124541B (en) * | 2021-04-14 | 2024-01-23 | 珠海格力电器股份有限公司 | Judgment method and device for reverse connection of expansion valve, controller and air conditioner |
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| CN104535884B (en) | 2018-03-20 |
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Address after: 315191 Zhejiang city of Ningbo province Jiangshan town Yinzhou District Mingguang Road No. 1166 Applicant after: NINGBO AUX ELECTRIC CO., LTD. Address before: 315191 Zhejiang city of Ningbo province Jiangshan town Yinzhou District Mingguang Road No. 1166 Applicant before: Ningbo AUX Electric Co., Ltd. |
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