CN104535884B - Judge domestic multi-connection machine indoor set data wire whether the method for wrong - Google Patents
Judge domestic multi-connection machine indoor set data wire whether the method for wrong Download PDFInfo
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- CN104535884B CN104535884B CN201410836818.7A CN201410836818A CN104535884B CN 104535884 B CN104535884 B CN 104535884B CN 201410836818 A CN201410836818 A CN 201410836818A CN 104535884 B CN104535884 B CN 104535884B
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Abstract
The present invention disclose a kind of indoor set data wire for judging domestic multi-connection machine whether the method for wrong, its step is：N platforms indoor set altogether, refrigerating operaton of being started shooting to indoor set, detect coil pipe middle portion temperature Tem and the temperature Tq of capillary temperature sensor (1) the two temperature values, judge whether the two temperature values decline more than 3 DEG C, if it is, closing this indoor set, next is detected；Continue to detect always if the indoor set of detection is eligible, until two temperature values of Tem and Tq decline more than 3 DEG C after having judged 1 indoor set refrigerating operaton same time of N, then the data wire for the unit whole indoor set of drawing a conclusion does not have wrong；If it find that the underswing for there are two temperature values of an indoor set to decline, then judge failure, now, all indoor sets being not keyed up are detected, wherein two temperature values for having one decline more than 3 DEG C, then judge this also failure.This method is quickly, conveniently, accurately.
Description
Technical field
The present invention relates to domestic multi-connection formula air-conditioner set, is especially a kind of indoor set data wire for judging domestic multi-connection machine
Whether the method for wrong.
Background technology
The VRF Air Conditioning System abbreviation multi-connected machine of prior art, the multi-connected machine of wherein household is relatively simple for structure, only
There are an outdoor unit and several indoor sets few in number.Outdoor unit connects with multiple indoor sets after parallel connection.
The compressor, four-way reversing valve, an outdoor heat exchanger that domestic multi-connection machine includes a frequency conversion (are condensation during refrigeration
Device), multiple electric expansion valves and with the multiple indoor heat exchangers of electric expansion valve number identical (being evaporator during refrigeration).Compression
Machine outlet connects with the first valve port of four-way reversing valve, and the valve port of four-way reversing valve second connects with outdoor heat exchanger one end, outdoor
The heat exchanger other end connects with one end of whole electric expansion valves of parallel connection, the other end of each electric expansion valve and an interior
One end connection of heat exchanger, the other end of whole indoor heat exchangers in parallel connect with the valve port of four-way reversing valve the 3rd, four-way
The valve port of reversal valve the 4th connects with suction port of compressor.
During refrigeration mode, the first valve port of four-way reversing valve connects with the second valve port, and the 3rd valve port connects with the 4th valve port,
That is refrigerant is along compressor, outdoor heat exchanger, electric expansion valve, indoor heat exchanger, the circulation of compressor this route.
Compressor, four-way reversing valve, outdoor heat exchanger and electric expansion valve belong to outdoor machine part, and indoor heat exchanger category
In indoor set part.Each indoor heat exchanger connects to form a branch line, each branch line with an electric expansion valve
Electric expansion valve and indoor heat exchanger between be equipped with a capillary temperature sensor, capillary temperature sensor still falls within outdoor
Machine part, multiple branched pipes being connected into by an electric expansion valve, a capillary temperature sensor and an indoor heat exchanger
Road is then parallel with one another.The coil temperature sensor of measurement coil pipe middle portion temperature is provided with the middle part of the coil pipe of each indoor heat exchanger.
Each indoor set includes indoor heat exchanger, fan and signal receiver, and signal receiver electrically connects with fan, user
After launching starting-up signal to some indoor set, signal receiver receives and drives the fan running of the indoor set.It is and each indoor
The signal receiver of machine and the master controller of air-conditioner set connect through a signal wire, the signal wire one end and indoor set
Signal receiver connect and the other end is connected with the interface on air-conditioning master controller, and each interface of master controller and one it is right
The electric expansion valve electrical connection answered.Signal wire must access correct interface on master controller, and the signal wire such as a indoor sets is necessary
It is connected with a interfaces of master controller, the signal wire of b indoor sets must be connected with the b interfaces of master controller, once signal wire wrong
Interface, has such as been connected to the b interfaces of master controller, may result in after user sends starting-up signal to a indoor sets, a indoor sets
Starting fan, but the electric expansion valve of a indoor sets is not opened, and b indoor machine fans do not turn, but the electric expansion valve of b indoor sets is beaten
Open, there is refrigerant to flow through.Prevent whole unit is from normal cooling and warming.But in practical operation, technical staff is often due to carelessness
Wrong data wire, by other interface in indoor set data wire misconnection to master controller.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of interior that is quick, conveniently, accurately judging domestic multi-connection machine
Machine data wire whether the method for wrong.
The technical solution of the present invention be to provide a kind of indoor set data wire for judging domestic multi-connection machine whether wrong
Method, its step include：The number of units of indoor set is N platforms, and unit is switched into refrigeration mode, and start life is sent to an indoor set
Order, after running a period of time, detect corresponding to the coil pipe middle portion temperature Tem of indoor set and the indoor set of the start of the start
The two temperature values of the temperature Tq of capillary temperature sensor, judge whether the two temperature values decline more than 3 DEG C, if it is,
This indoor set is then closed, by the next indoor set refrigerating operaton same time, and judges the Tem and Tq two of the indoor set
Whether temperature value declines more than 3 DEG C, if it is, continue to judge again after next indoor set refrigerating operaton same time Tem and
Whether two temperature values of Tq decline more than 3 DEG C, until having judged Tem and Tq after the N-1 platform indoor set refrigerating operaton same times
Two temperature values decline more than 3 DEG C, then the data wire for the unit whole indoor set of drawing a conclusion does not have wrong；If above-mentioned
In detection process, find have under any one after an indoor set refrigerating operaton same time in two temperature values of Tem and Tq
The amplitude of drop is less than 3 DEG C, then judges Fisrt fault indoor set of this indoor set for data wire wrong, and now, detection is all not
Two temperature values of Tem and Tq of the indoor set of start, wherein there is two temperature values of Tem and Tq of an indoor set being not keyed up equal
Decline more than 3 DEG C, then judge the second failure indoor set of indoor set that this be not keyed up for data wire wrong.
The principle of the determination methods is：Once the data wire of certain indoor set is connected to correct interface on air-conditioning main controller
On, starting-up signal is sent out to this indoor set, the electric expansion valve corresponding to the indoor set just can be opened normally, in the indoor set
Just have refrigerant on branch line where indoor heat exchanger to flow through, two positions of the branch line are capillary temperature sensor
It will decline with the temperature on the coil pipe middle portion temperature sensor of indoor heat exchanger；And once the data wire of this indoor set connects
Mistake, when launching starting-up signal, electric expansion valve would not be opened corresponding to this indoor set, the branched pipe where this indoor set
Refrigerant is not had on road to flow through, will not be cooled naturally, and electric expansion valve corresponding to an other indoor set can be opened, it is another
Branch line where platform indoor set can cool because refrigerant flows through.And wrong line is often two wrongs together, so inspection
During survey, N platforms indoor set, N-1 platforms do not have wrong altogether, last certainly not wrong；Once it was found that there is a wrong, that is with regard to straight
Connect and detect remaining indoor set being not keyed up, wherein the indoor set for being not keyed up but cooling is exactly the indoor set of another wrong naturally.
Using above method, the present invention judge domestic multi-connection machine indoor set data wire whether the method for wrong and existing skill
Art is compared, and has advantages below：
The determination methods detection speed is fast, accurate without artificial, efficiency high, testing result.
Brief description of the drawings
Fig. 1 be the present invention judge domestic multi-connection machine indoor set data wire whether the systematic schematic diagram of the method for wrong.
1 shown in figure, capillary temperature sensor, 2, compressor, 3, outdoor heat exchanger, 4, coil temperature sensor, 5, point
Bye-pass.
Embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, the present invention judge domestic multi-connection machine indoor set data wire whether the method for wrong, its specific steps
It is as follows.
The number of units of indoor set is N platforms.Unit is switched to refrigeration mode, power-on command, the room are sent to an indoor set
The fan of interior machine is opened, and the compressor 2 of outdoor unit starts, and the fan of outdoor heat exchanger 3 is also opened.After running a period of time, such as
After operation 3 minutes, the coil pipe middle portion temperature Tem of the coil temperature sensor 4 of the indoor set of the start and the room of the start are detected
That capillary temperature on branch line 5 where the indoor set that capillary temperature sensor 1 corresponding to interior machine is namely started shooting
The temperature Tq of sensor 1.Whether decline more than 3 DEG C compared with judging the two temperature values of Tem and Tq when being not keyed up.If
It is then to close this indoor set, by next namely second indoor set refrigerating operaton same time such as same 3 points of operation
Clock, and judge whether two temperature values of Tem and Tq of the indoor set decline more than 3 DEG C.If it is, continue to judge next again
That is whether two temperature values of Tem and Tq decline more than 3 DEG C after the 3rd indoor set refrigerating operaton same time.If start shooting and examine
The each indoor set surveyed meets condition always, then continues to detect new indoor set always, until having judged N-1 platforms interior
Two temperature values of Tem and Tq decline more than 3 DEG C after the mechanism cold operation same time, such as 6 altogether, have judged that 5 cool 3
More than DEG C, then the data wire for the unit whole indoor set of drawing a conclusion does not have wrong.Certainly, if detecting N-1 platforms interior
Machine wrong, then N platforms also natural wrong.If in above-mentioned detection process, when discovery has an indoor set refrigerating operaton same
Between after any one amplitude declined in Tem and Tq two temperature values be less than 3 DEG C, do not have at all as Tem only declines 1 DEG C or Tq
Decline, then judge Fisrt fault indoor set of this indoor set for data wire wrong.Now, all indoor sets being not keyed up are detected
Two temperature values of Tem and Tq, wherein two temperature values of Tem and Tq for having an indoor set being not keyed up decline more than 3 DEG C,
Then judge the second failure indoor set of indoor set that this be not keyed up for data wire wrong.
The detection speed of this method is very fast, as long as detecting an indoor set wiring faults, need not just continue refrigeration fortune
Remaining indoor set for being not keyed up of row, but directly found out from the indoor set being not keyed up separately by two temperature values of Tem and Tq
The indoor set of one failure.
Claims (1)
1. a kind of indoor set data wire for judging domestic multi-connection machine whether the method for wrong, it is characterised in that：Its step is as follows：Room
The number of units of interior machine is N platforms, and unit is switched into refrigeration mode, and power-on command is sent to an indoor set, after running a period of time,
Detect the coil pipe middle portion temperature Tem of the indoor set of the start and the capillary temperature sensor (1) corresponding to the indoor set of the start
Temperature Tq the two temperature values, judge whether the two temperature values decline more than 3 DEG C, if it is, closing this interior
Machine, by the next indoor set refrigerating operaton same time, and judge whether two temperature values of Tem and Tq of the indoor set decline
More than 3 DEG C, if it is, continuing two temperature values of Tem and Tq after judging the next indoor set refrigerating operaton same time again is
It is no to decline more than 3 DEG C, until under having judged that two temperature values of Tem and Tq are after the N-1 platform indoor set refrigerating operaton same times
More than 3 DEG C of drop, then the data wire for the unit whole indoor set of drawing a conclusion does not have wrong；If in above-mentioned detection process, hair
Any one amplitude declined after an existing indoor set refrigerating operaton same time in two temperature values of Tem and Tq is less than 3
DEG C, then judge Fisrt fault indoor set of this indoor set for data wire wrong, now, detect all indoor sets being not keyed up
Two temperature values of Tem and Tq, wherein two temperature values of Tem and Tq for having an indoor set being not keyed up decline more than 3 DEG C, then
Judge the second failure indoor set of indoor set that this be not keyed up for data wire wrong.
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| CN106594981B (en) * | 2016-11-30 | 2019-02-22 | 宁波奥克斯电气股份有限公司 | The heat detector of double-compressor air-conditioning system wrong anti-detection and selfreparing control method |
| 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 |
| 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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| JPH0476342A (en) * | 1990-07-17 | 1992-03-11 | Toshiba Corp | Air conditioner |
| JP3645784B2 (en) * | 2000-04-03 | 2005-05-11 | シャープ株式会社 | Multi-room air conditioner |
| KR100664056B1 (en) * | 2004-10-26 | 2007-01-03 | 엘지전자 주식회사 | Error existence distinction apparatus and method for multi type air conditioner |
| CN1987396B (en) * | 2005-12-22 | 2010-07-07 | 乐金电子(天津)电器有限公司 | Detecting method for composite air conditioner error connection line and distributing tube temperature sensor imperfect |
| CN101561363A (en) * | 2009-05-22 | 2009-10-21 | 宁波奥克斯电气有限公司 | Method for judging fault of four-way change valve of air conditioner |
| CN102692328B (en) * | 2011-03-24 | 2014-08-27 | 珠海格力电器股份有限公司 | Multi-split air conditioner detection system and method |
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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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