CN103791587A - Method for judging whether resistance values of temperature sensors of multi-union air conditioner of heating mode deviate - Google Patents
Method for judging whether resistance values of temperature sensors of multi-union air conditioner of heating mode deviate Download PDFInfo
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- CN103791587A CN103791587A CN201410027213.3A CN201410027213A CN103791587A CN 103791587 A CN103791587 A CN 103791587A CN 201410027213 A CN201410027213 A CN 201410027213A CN 103791587 A CN103791587 A CN 103791587A
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Abstract
The invention discloses a method for judging whether resistance values of temperature sensors of a multi-union air conditioner of a heating mode deviate. The method includes the steps that a, an outdoor unit operates in the heating mode; b, the pressure value of an air suction port of a compressor (1) is measured, the saturation temperature pdt corresponding to the pressure value is converted, and the temperature value Ts of an outlet of a coil pipe, the temperature value Tem of the middle of the coil pipe and the temperature value Tdef of an inlet of the coil pipe of the outdoor unit are measured; c, whether two conditions are met at the same time is judged, wherein the two conditions are as follows: Ts>=Tem >=Tdef and 0<Tem-pdt<=5, if the two conditions are met at the same time, it is judged that the resistance values of the three temperature sensors of the outdoor unit do not deviate, and if either of the conditions is not met, it is judged that the resistance values of the temperature sensors of the outdoor unit deviate. According to the method, the detection process is simple, quick, accurate, direct and efficient.
Description
Technical field
The present invention relates to VRF Air Conditioning System (abbreviation combined air conditioners), is specifically a kind of method whether resistance of the temperature inductor (heat detector) that judges the VRF Air Conditioning System of moving under heating mode is offset.
Background technology
The VRF Air Conditioning System of prior art comprises an off-premises station, multiple indoor set and connects two refrigerant circulation house stewards of each indoor set and off-premises station, multiple indoor set parallel connections, and the indoor set after parallel connection is communicated with off-premises station by two refrigerant circulation house stewards.
Each off-premises station comprises compressor, oil eliminator, four-way change-over valve, outdoor heat exchanger (being evaporimeter when heating mode), outer organic electronic expansion valve and gas-liquid separator.Compressor outlet is communicated with one end of oil eliminator, the other end of oil eliminator is communicated with the first valve port of four-way change-over valve, the 3rd valve port of four-way change-over valve is communicated with a refrigerant circulation house steward in two refrigerant circulation house stewards, another root refrigerant circulation house steward in two refrigerant circulation house stewards is communicated with one end of outer organic electronic expansion valve, the other end of outer organic electronic expansion valve is communicated with one end of outdoor heat exchanger, the other end of outdoor heat exchanger is communicated with the second valve port of four-way change-over valve, the 4th valve port of four-way change-over valve is connected with one end of gas-liquid separator, the other end of gas-liquid separator is communicated with suction port of compressor.
Each indoor set comprises interior organic electronic expansion valve and indoor heat exchanger (being condenser when heating mode), one end of indoor heat exchanger is communicated with one end of interior organic electronic expansion valve, the other end of interior organic electronic expansion valve is communicated with in two root refrigerants circulation house stewards one, and the house steward that circulates is communicated with for the other end of indoor heat exchanger and another root refrigerant in two root refrigerants circulation house stewards.
When heating mode, the first valve port of four-way change-over valve is communicated with the 3rd valve port, the second valve port is communicated with the 4th valve port, and refrigerant is along compressor, indoor heat exchanger, interior organic electronic expansion valve, outer organic electronic expansion valve, outdoor heat exchanger, this route circulation of compressor.The entrance of the compressor of off-premises station is provided with pressure sensor, and outdoor coil pipe used outlet, middle part, entrance are respectively equipped with the first temperature sensor, the second temperature sensor and three-temperature sensor.Above-mentioned three temperature sensors and a pressure sensor are all electrically connected with the master controller of air-conditioning.
In three above-mentioned temperature inductors, be provided with resistance, once changing appears in the resistance of resistance, be offset, will cause measurement result inaccurate, the master controller of unit regulates and controls unit according to wrong measurement result again, and a series of fault will certainly occur.Although and temperature inductor all passes through to detect and guarantees that resistance is accurate in the time dispatching from the factory, after the long-term operation of unit, be subject to climatic effect, as excessive in day and night temperature, humidity is excessive etc., all can make resistance produce skew.And the method whether resistance that lacks special detection heat detector in prior art is offset, technical staff can only investigate the reason of other fault one by one, the last reason that could determine fault is that resistance is offset, and as coil pipe obstruction, the heat exchanger coils of the rotation speed of fan deficiency of outer machine, interior machine, heat exchanger show to be stained with ash, whether the valve body such as heat exchange quantity not sufficient, interior organic electronic expansion valve is stopped up etc.Each technical staff has expended a large amount of time and has investigated one by one, finally just finally determines that failure cause is the skew of temperature inductor resistance, the loaded down with trivial details effort of testing process, inefficiency.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of method that provides heat detector resistance that can make testing process judge simply, fast, accurately, directly, efficiently the combined air conditioners of heating mode whether to be offset.
Technical solution of the present invention is, a kind of method that provides heat detector resistance of the combined air conditioners that judges heating mode whether to be offset, and its concrete steps are as follows:
A, under heating mode, the compressor of start operation off-premises station;
B, measure the force value of compressor air suction mouth of off-premises station with pressure sensor, and converse saturation temperature pdt corresponding to this force value, the temperature value Ts exporting with the coil pipe of first this off-premises station of temperature sensor measurement, with the temperature value Tem in the middle part of the coil pipe of the second temperature sensor measurement off-premises station, measure the coil pipe inlet temperature value Tdef of off-premises station with three-temperature sensor;
C, judge whether to meet following two conditions: 1, Ts >=Tem >=Tdef simultaneously; 2,0 < Tem-pdt≤5; If meet above-mentioned two conditions simultaneously, judge that the resistance of three temperature inductors of off-premises station is not all offset, if there is any one condition not meet, judge that the resistance of the temperature inductor of off-premises station is offset.
Adopt above method, the present invention judges that method that whether the heat detector resistance of the combined air conditioners of heating mode be offset compared with prior art, has the following advantages:
By the method, can directly judge whether the resistance of the temperature sensor of off-premises station is offset, testing process is easily and fast, directly, accurately, efficiently.
Accompanying drawing explanation
Fig. 1 is the systematic schematic diagram of the method that whether is offset of the heat detector resistance of the present invention's combined air conditioners of judging heating mode.
Shown in figure 1, compressor, 2, three-temperature sensor, 3, pressure sensor, 4, the first temperature sensor, 5, the second temperature sensor.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As shown in Figure 1, the present invention judges the method whether the heat detector resistance of the combined air conditioners of heating mode is offset, and its concrete steps are as follows.
A, under heating mode, the compressor 1 of start operation off-premises station.
B, measure the force value of compressor 1 air entry of off-premises station with pressure sensor 3, and converse saturation temperature pdt corresponding to this force value, measure the temperature value Ts of the coil pipe outlet of this off-premises station with the first temperature sensor 4, measure the temperature value Tem at the coil pipe middle part of off-premises station with the second temperature sensor 5, measure the coil pipe inlet temperature value Tdef of off-premises station with three-temperature sensor 2.
C, judge whether to meet following two conditions: 1, Ts >=Tem >=Tdef simultaneously; 2,0 < Tem-pdt≤5; If meet above-mentioned two conditions simultaneously, judge that the resistance of three temperature inductors of off-premises station is not all offset, if there is any one condition not meet, judge that the resistance of the temperature inductor of off-premises station is offset.If judge the temperature inductor resistance skew of off-premises station, replace three temperature inductors of off-premises station.
Claims (1)
1. judge the method whether the heat detector resistance of the combined air conditioners of heating mode is offset, it is characterized in that: its concrete steps are as follows:
A, under heating mode, the compressor (1) of start operation off-premises station;
B, use pressure sensor (3) are measured the force value of compressor (1) air entry of off-premises station, and converse saturation temperature pdt corresponding to this force value, measure the temperature value Ts of the coil pipe outlet of this off-premises station with the first temperature sensor (4), measure the temperature value Tem at the coil pipe middle part of off-premises station with the second temperature sensor (5), measure the coil pipe inlet temperature value Tdef of off-premises station with three-temperature sensor (2);
C, judge whether to meet following two conditions: 1, Ts >=Tem >=Tdef simultaneously; 2,0 < Tem-pdt≤5; If meet above-mentioned two conditions simultaneously, judge that the resistance of three temperature inductors of off-premises station is not all offset, if there is any one condition not meet, judge that the resistance of the temperature inductor of off-premises station is offset.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410027213.3A CN103791587B (en) | 2014-01-21 | 2014-01-21 | Judge the method whether the heat detector resistance of the combined air conditioners of heating mode offsets |
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| CN201410027213.3A CN103791587B (en) | 2014-01-21 | 2014-01-21 | Judge the method whether the heat detector resistance of the combined air conditioners of heating mode offsets |
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| CN103791587A true CN103791587A (en) | 2014-05-14 |
| CN103791587B CN103791587B (en) | 2016-08-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105526676A (en) * | 2015-12-23 | 2016-04-27 | 宁波奥克斯电气股份有限公司 | Method for judging whether liquid is accumulated in indoor heat exchangers of multi-connected units in heating process |
| CN105546736A (en) * | 2015-12-23 | 2016-05-04 | 宁波奥克斯电气股份有限公司 | Method for solving accumulated liquid of indoor heat exchanger of multi-split air conditioner during heating |
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| JPH05196275A (en) * | 1992-01-22 | 1993-08-06 | Matsushita Electric Ind Co Ltd | Abnormal state judgement device for air conditioner |
| JPH0727453A (en) * | 1993-07-16 | 1995-01-27 | Toshiba Ave Corp | Air conditioner |
| JPH08313125A (en) * | 1995-05-23 | 1996-11-29 | Sanyo Electric Co Ltd | Abnormally detecting method of pressure sensor and temperature sensor in refrigerating device |
| CN1227335A (en) * | 1998-02-20 | 1999-09-01 | 东芝株式会社 | Multi-room type air conditioner |
| CN101283243A (en) * | 2005-08-03 | 2008-10-08 | 开利公司 | System and method for detecting sensor fault in refrigeration system |
| CN101504179A (en) * | 2009-02-27 | 2009-08-12 | 海信（山东）空调有限公司 | Substitution control method for air conditioner fault sensor |
| JP2011089662A (en) * | 2009-10-20 | 2011-05-06 | Mitsubishi Electric Corp | Air conditioner |
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2014
- 2014-01-21 CN CN201410027213.3A patent/CN103791587B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05196275A (en) * | 1992-01-22 | 1993-08-06 | Matsushita Electric Ind Co Ltd | Abnormal state judgement device for air conditioner |
| JPH0727453A (en) * | 1993-07-16 | 1995-01-27 | Toshiba Ave Corp | Air conditioner |
| JPH08313125A (en) * | 1995-05-23 | 1996-11-29 | Sanyo Electric Co Ltd | Abnormally detecting method of pressure sensor and temperature sensor in refrigerating device |
| CN1227335A (en) * | 1998-02-20 | 1999-09-01 | 东芝株式会社 | Multi-room type air conditioner |
| CN101283243A (en) * | 2005-08-03 | 2008-10-08 | 开利公司 | System and method for detecting sensor fault in refrigeration system |
| CN101504179A (en) * | 2009-02-27 | 2009-08-12 | 海信（山东）空调有限公司 | Substitution control method for air conditioner fault sensor |
| JP2011089662A (en) * | 2009-10-20 | 2011-05-06 | Mitsubishi Electric Corp | Air conditioner |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105526676A (en) * | 2015-12-23 | 2016-04-27 | 宁波奥克斯电气股份有限公司 | Method for judging whether liquid is accumulated in indoor heat exchangers of multi-connected units in heating process |
| CN105546736A (en) * | 2015-12-23 | 2016-05-04 | 宁波奥克斯电气股份有限公司 | Method for solving accumulated liquid of indoor heat exchanger of multi-split air conditioner during heating |
| CN105546736B (en) * | 2015-12-23 | 2018-07-06 | 宁波奥克斯电气股份有限公司 | The method for solving the indoor heat exchanger hydrops of multi-connected machine during heating |
| CN105526676B (en) * | 2015-12-23 | 2018-07-27 | 宁波奥克斯电气股份有限公司 | Judge heating when multi-connected machine indoor heat exchanger whether the method for hydrops |
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| CN103791587B (en) | 2016-08-24 |
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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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