CN103791596B - Judge the method whether the heat detector resistance of the combined air conditioners of refrigeration mode offsets - Google Patents
Judge the method whether the heat detector resistance of the combined air conditioners of refrigeration mode offsets Download PDFInfo
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- CN103791596B CN103791596B CN201410027071.0A CN201410027071A CN103791596B CN 103791596 B CN103791596 B CN 103791596B CN 201410027071 A CN201410027071 A CN 201410027071A CN 103791596 B CN103791596 B CN 103791596B
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Abstract
The invention discloses the method whether the heat detector resistance of the combined air conditioners judging refrigeration mode offsets, the steps include: a, run refrigeration mode and open an indoor set；B, the force value of measurement compressor (1) air entry, and converse saturation temperature pdt that this force value is corresponding, measure the temperature value Tem in the middle part of the temperature value Te1 of the coil outlets of this indoor set, coil pipe and coil inlet temperature value Te2；C, judge whether to meet following two condition: 1, Te1 >=Tem >=Te2 simultaneously；2,0 ＜ Tem pdt≤20；If meet above-mentioned two condition simultaneously, then judging that the resistance of three temperature inductors of this indoor set all offsets, if there being any one condition to be unsatisfactory for, then judging that the resistance of the temperature inductor of this indoor set offsets.The method can make detection process simple, quickly, accurately, directly, efficiently.
Description
Technical field
The present invention relates to VRF Air Conditioning System (abbreviation combined air conditioners), be especially a kind of judge under refrigeration mode run
The method whether resistance of the temperature inductor (heat detector) of VRF Air Conditioning System offsets.
Background technology
The VRF Air Conditioning System of prior art includes off-premises station, multiple indoor set parallel with one another and connects each indoor set
Two coolant circulation house stewards with off-premises station.Off-premises station by two coolant circulation house stewards with in parallel after multiple indoor sets company
Logical.
Each off-premises station includes that compressor, oil eliminator, four-way change-over valve, outdoor heat exchanger are (for condensation during refrigeration mode
Device) and gas-liquid separator.Compressor outlet connects with one end of oil eliminator, and the other end of oil eliminator commutates with four-way
Valve first valve port connection, four-way change-over valve the second valve port connects with outdoor heat exchanger one end, the outdoor heat exchanger other end and
A connection in two coolant circulation house stewards, and another root coolant circulation house steward in two coolant circulation house stewards is with each
Four-way change-over valve the 3rd valve port connection of off-premises station, four-way change-over valve the 4th valve port is connected with one end of gas-liquid separator, gas
The other end of liquid/gas separator connects with suction port of compressor.
Each indoor set includes interior organic electronic expansion valve and indoor heat exchanger (being vaporizer during refrigeration mode), indoor heat exchanger
One end connect with one end of interior organic electronic expansion valve, in the other end of interior organic electronic expansion valve and two coolant circulation house stewards
A connection, another root coolant circulation house steward's connection in the other end of indoor heat exchanger and two coolant circulation house stewards.
During refrigeration mode, the first valve port of four-way change-over valve and the connection of the second valve port, the 3rd valve port and the connection of the 4th valve port,
I.e. coolant is along compressor, outdoor heat exchanger, interior organic electronic expansion valve, indoor heat exchanger, the circulation of this route of compressor.
The suction port of compressor of off-premises station is provided with pressure transducer, and the outlet of the coil pipe of indoor set, middle part, entrance are respectively equipped with
First temperature sensor, the second temperature sensor and three-temperature sensor, three above-mentioned temperature sensors and a pressure
Force transducer all electrically connects with the master controller of air-conditioning.
Being provided with resistance in three above-mentioned temperature inductors, once there is change in the resistance of resistance, offsets, will lead
Cause measurement result is inaccurate, and the master controller of unit regulates and controls unit according to the measurement result of mistake again, will certainly occur one
The fault of series.And although temperature inductor all passes through detection and ensures that resistance is accurate when dispatching from the factory, but after unit longtime running,
By climatic effect, as excessive in day and night temperature, humidity is excessive, and resistance all can be made to produce skew.And in prior art
Lacking the method whether resistance of special detection heat detector offsets, the reason of other fault can only be investigated by technical staff one by one,
The last reason that just can determine that fault is resistance skew, and coil pipe as not enough in the rotation speed of fan of outer machine, interior machine, heat exchanger blocks up
Plug, heat exchanger coils show to be stained with ash and make to change the valve body such as shortage of heat, interior organic electronic expansion valve whether blocking etc..Skill every time
Art personnel take a substantial amount of time and investigate one by one, the most finally determine failure cause, loaded down with trivial details laborious, the effect of detection process
Rate is low.
Summary of the invention
The technical problem to be solved in the present invention is to provide one can make detection process simple, quick, accurate, direct, high
The method whether the heat detector resistance of the combined air conditioners judging refrigeration mode of effect offsets.
The heat detector resistance that the technical solution of the present invention is to provide a kind of combined air conditioners judging refrigeration mode is the most inclined
The method moved, it specifically comprises the following steps that
A, in cooling mode, start runs the compressor of outer machine, and opens the interior organic electronic expansion valve of an indoor set；
B, measure the force value of compressor air suction mouth of outer machine with pressure transducer, and converse corresponding saturated of this force value
Temperature pdt, with the temperature value Te1 of the coil outlets of first this indoor set of temperature sensor measurement of the indoor set of start, uses
Temperature value Tem in the middle part of the coil pipe of second this indoor set of temperature sensor measurement of the indoor set of start, with the indoor of start
The three-temperature sensor of machine measures the coil inlet temperature value Te2 of this indoor set；
C, judge whether to meet following two condition: 1, Te1 >=Tem >=Te2 simultaneously；2,0 ＜ Tem-pdt≤20；As
Fruit meets above-mentioned two condition simultaneously, then judge that the resistance of three temperature inductors of this indoor set all offsets, as
Fruit has any one condition to be unsatisfactory for, then judge that the resistance of the temperature inductor of this indoor set offsets.
Using above method, the present invention judges that method that whether the heat detector resistance of the combined air conditioners of refrigeration mode offset is with existing
There is technology to compare, have the advantage that
With it, whether the resistance that can directly find the temperature sensor of each concrete indoor set offsets,
Detection process is easily and fast, directly, accurately, efficiently.
Accompanying drawing explanation
Fig. 1 is the systematic schematic diagram that the present invention judges the method whether the heat detector resistance of the combined air conditioners of refrigeration mode offset.
Shown in figure 1, compressor, 2, interior organic electronic expansion valve, 3, pressure transducer, the 4, first temperature sensor,
5, the second temperature sensor, 6, three-temperature sensor.
Detailed description of the invention
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
As it is shown in figure 1, the present invention judges the method whether the heat detector resistance of the combined air conditioners of refrigeration mode offsets, it is concrete
Step is as follows.
A, in cooling mode, start runs the compressor 1 of outer machine, and opens the interior organic electronic expansion valve 2 of an indoor set.
B, measure the force value of compressor 1 air entry of outer machine with pressure transducer 3, and converse corresponding full of this force value
With temperature pdt, measure the temperature value Te1 of the coil outlets of this indoor set with the first temperature sensor 4 of the indoor set of start,
The temperature value Tem in the middle part of the coil pipe of this indoor set is measured, with the room of start with the second temperature sensor 5 of the indoor set of start
The three-temperature sensor 6 of interior machine measures the coil inlet temperature value Te2 of this indoor set.
C, judge whether to meet following two condition: 1, Te1 >=Tem >=Te2 simultaneously；2,0 ＜ Tem-pdt≤20；If
Meet above-mentioned two condition simultaneously, then judge that the resistance of three temperature inductors of this indoor set all offsets, if had
Any one condition is unsatisfactory for, then judge that the resistance of the temperature inductor of this indoor set offsets.If measure concrete which
The temperature inductor resistance skew of indoor set, then replace three temperature inductors of this indoor set.
Claims (1)
1. the method that whether the heat detector resistance of the combined air conditioners judging refrigeration mode offsets, it is characterised in that: its tool
Body step is as follows:
A, in cooling mode, start runs the compressor (1) of outer machine, and opens the interior organic electronic expansion of an indoor set
Valve (2)；
B, use pressure transducer (3) measure the force value of compressor (1) air entry of outer machine, and converse this force value
Corresponding saturation temperature pdt, measures the coil outlets of this indoor set with first temperature sensor (4) of the indoor set of start
Temperature value Te1, measure the temperature in the middle part of the coil pipe of this indoor set with second temperature sensor (5) of indoor set of start
Value Tem, measures the coil inlet temperature value Te2 of this indoor set with the three-temperature sensor (6) of the indoor set of start；
C, judge whether to meet following two condition: 1, Te1 >=Tem >=Te2 simultaneously；2,0 ＜ Tem-pdt≤20；As
Fruit meets above-mentioned two condition simultaneously, then judge that the resistance of three temperature inductors of this indoor set all offsets, as
Fruit has any one condition to be unsatisfactory for, then judge that the resistance of the temperature inductor of this indoor set offsets.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410027071.0A CN103791596B (en) | 2014-01-21 | 2014-01-21 | Judge the method whether the heat detector resistance of the combined air conditioners of refrigeration mode offsets |
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| CN201410027071.0A CN103791596B (en) | 2014-01-21 | 2014-01-21 | Judge the method whether the heat detector resistance of the combined air conditioners of refrigeration mode offsets |
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| CN103791596A CN103791596A (en) | 2014-05-14 |
| CN103791596B true CN103791596B (en) | 2016-08-24 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864956A (en) * | 2016-03-28 | 2016-08-17 | 广东美的暖通设备有限公司 | Drifting detection method for temperature sensor in air side heat exchanger, processor and air conditioner |
| CN105890112B (en) * | 2016-04-06 | 2019-04-19 | 广东美的暖通设备有限公司 | Temperature sensor drift detection method, processor and air-conditioning in outdoor unit heat exchanger |
| CN109798641B (en) * | 2019-01-03 | 2021-11-02 | 广东美的暖通设备有限公司 | Method and device for correcting temperature detection result of internal machine |
| CN111156668B (en) * | 2020-01-03 | 2021-01-29 | 珠海格力电器股份有限公司 | Method and device for accurately reading temperature of thermal bulb and air conditioner |
Citations (5)
| 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 |
| JPH08313125A (en) * | 1995-05-23 | 1996-11-29 | Sanyo Electric Co Ltd | Abnormally detecting method of pressure sensor and temperature sensor in refrigerating device |
| JPH11237097A (en) * | 1998-02-20 | 1999-08-31 | Toshiba Corp | Multiroom air conditioner |
| 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 |
-
2014
- 2014-01-21 CN CN201410027071.0A patent/CN103791596B/en active Active
Patent Citations (6)
| 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 |
| JPH08313125A (en) * | 1995-05-23 | 1996-11-29 | Sanyo Electric Co Ltd | Abnormally detecting method of pressure sensor and temperature sensor in refrigerating device |
| JPH11237097A (en) * | 1998-02-20 | 1999-08-31 | Toshiba Corp | Multiroom air conditioner |
| CN1227335A (en) * | 1998-02-20 | 1999-09-01 | 东芝株式会社 | Multi-room type air conditioner |
| 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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| CN103791596A (en) | 2014-05-14 |
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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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