CN105526676B - Judge heating when multi-connected machine indoor heat exchanger whether the method for hydrops - Google Patents
Judge heating when multi-connected machine indoor heat exchanger whether the method for hydrops Download PDFInfo
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- CN105526676B CN105526676B CN201510980955.2A CN201510980955A CN105526676B CN 105526676 B CN105526676 B CN 105526676B CN 201510980955 A CN201510980955 A CN 201510980955A CN 105526676 B CN105526676 B CN 105526676B
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- indoor unit
- switched
- hydrops
- judge
- booting
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses it is a kind of judge heating when multi-connected machine indoor heat exchanger whether the method for hydrops, the key of this method is：One by one to each be switched on indoor unit be detected, judge every be switched on indoor unit whether and meanwhile meet following two conditions：1, the coil inlet temperature Te1 for the indoor unit being switched on subtracts the Coil outlet temperature Te2 of the indoor unit of the booting more than or equal to 30 DEG C；2, the coil pipe middle portion temperature Tem for the indoor unit being switched on subtracts the Coil outlet temperature Te2 of the indoor unit of the booting more than or equal to 10 DEG C；If meeting above-mentioned condition simultaneously, hydrops inside the indoor unit of the booting is judged；If asynchronously met, not hydrops is judged.This method is efficient and convenient accurate.
Description
Technical field
The present invention relates to VRF Air Conditioning System, be especially a kind of indoor heat exchanger judging multi-connected machine when heating whether
The method of hydrops.
Background technology
The VRF Air Conditioning System abbreviation multi-connected machine of the prior art, it includes outdoor unit and multiple indoor units parallel with one another
And two refrigerants circulation manifold of each indoor unit of connection and outdoor unit.Outdoor unit by two refrigerants circulate manifold with it is in parallel after
Multiple indoor units connection.
Outdoor unit includes that compressor, oil eliminator, four-way reversing valve, outdoor heat exchanger (heat when refrigeration for condenser
When be evaporator), outer machine electric expansion valve, liquid storage device and gas-liquid separator.Compressor outlet is connected to the entrance of oil eliminator,
The outlet of oil eliminator is connected to the first valve port of four-way reversing valve, and the second valve port of four-way reversing valve connects with outdoor heat exchanger one end
Logical, the outdoor heat exchanger other end is connected to one end of outer machine electric expansion valve, the other end and liquid storage device of outer machine electric expansion valve
One end connection, circulate with two refrigerants in manifold one of the other end of liquid storage device is connected to, and two refrigerants circulate in manifold
Another refrigerant circulation manifold be connected to the four-way reversing valve third valve port of outdoor unit, the 4th valve port of four-way reversing valve and gas-liquid
The entrance of separator connects, and the outlet of gas-liquid separator is connected to suction port of compressor.
Each indoor unit includes interior machine electric expansion valve and indoor heat exchanger (is condensation when being heated for evaporator when refrigeration
Device), one end of indoor heat exchanger is connected to one end of interior machine electric expansion valve, the other end of interior machine electric expansion valve and two it is cold
One in matchmaker's circulation manifold is connected to, and another refrigerant in the other end of indoor heat exchanger and two refrigerants circulation manifold circulates
Manifold is connected to.
When heating mode, the first valve port of four-way reversing valve is connected to third valve port, and the second valve port is connected to the 4th valve port,
Refrigerant is along compressor, indoor heat exchanger, outdoor heat exchanger, compressor this route cycle.
The factors such as model, exchange capability of heat, fan operation rotating speed, the heating needs of multiple indoor units due to unit parallel connection
It is all different, in this way, in actual motion, tends to the shape for the hypervolia of refrigerant after the heat exchange of the indoor unit of booting occur
Condition, and the liquid storage device of the prior art can get up the extra refrigerant deposit in this part；But increasingly with air-conditioning market competition
Fieriness, producer is to cost control to the degree haggled over every penny, and in order to reduce cost, many producers directly eliminate liquid storage
Device, in this way, when liquid refrigerants is excessive in system, to prevent liquid hammer compressor, the aperture of outer machine electric expansion valve from can only turn down, this
Sample, this operative liquid refrigerant will inversely be accumulated along pipeline, in the indoor heat exchanger for finally slowly accumulating indoor unit, that is, gone out
Existing indoor heat exchanger hydrops can cause refrigerant flow rate slow once the situation occurs, and indoor unit heating effect is deteriorated, or even pressure
Report high voltage fault in contracting machine exit.The prior art detection means shortage can rapidly and accurately judge indoor heat exchanger whether hydrops
Method.
Invention content
The technical problem to be solved by the present invention is to provide a kind of energy the efficient and convenient room for accurately judging multi-connected machine when heating
Interior heat exchanger whether the method for hydrops.
Technical solution of the invention be to provide a kind of indoor heat exchanger judging multi-connected machine when heating whether hydrops
Method is as follows：
A, it is run under heating mode；
If indoor unit is all switched on, judge whether to meet following two conditions simultaneously：1, the corresponding saturation of pressure at expulsion
Temperature is in the range of 50 DEG C~53 DEG C；2, the coil pipe middle portion temperature Tem for the indoor unit being switched on is in the range of 40 DEG C~43 DEG C；
If met simultaneously, then b is entered step, if asynchronously met, exits judgement；
If indoor unit part is switched on, judge whether to meet following three conditions simultaneously：1, the corresponding saturation of pressure at expulsion
Temperature is in the range of 50 DEG C~53 DEG C；2, the coil pipe middle portion temperature Tem for the indoor unit being switched on is in the range of 40 DEG C~43 DEG C；
3, the coil pipe middle portion temperature Tem for the indoor unit being not keyed up is in the range of 45 DEG C~48 DEG C；If met simultaneously, then b is entered step,
If asynchronously met, judgement is exited；
B, one by one to each be switched on indoor unit be detected, judge every booting indoor unit whether and meanwhile satisfaction with
Lower two conditions：1, the coil inlet temperature Te1 for the indoor unit being switched on subtracts the Coil outlet temperature Te2 of the indoor unit of the booting
More than or equal to 30 DEG C；2, the coil pipe middle portion temperature Tem for the indoor unit being switched on subtracts the coil outlets temperature of the indoor unit of the booting
It spends Te2 and is greater than or equal to 10 DEG C；If meeting above-mentioned condition simultaneously, hydrops inside the indoor unit of the booting is judged；If no
Meet simultaneously, then judges not hydrops.
The principle of the determination method is：First, the corresponding saturation temperature of the pressure at expulsion of compressor, booting coil pipe in the middle part of
Temperature is normal, and the coil pipe middle portion temperature the being not keyed up several years more slightly higher than the coil pipe middle portion temperature of booting, at least illustrates to compress
Machine normal work, pipeline does not block substantially, refrigerant can normally reach each indoor heat exchanger, if indoor heat exchanger inner product at this time
Liquid, then the refrigerant flow rate in the coil pipe of indoor heat exchanger is slow, and the wind turbine of each indoor unit is working normally, thus heat exchange amount compared with
Greatly, refrigerant temperature declines very fast when being flowed in heat exchanger indoors, so, once find the import and outlet of the coil pipe of indoor unit
Between the temperature difference and middle part and outlet temperature between excessive temperature differentials, then judge hydrops inside the indoor unit.
Using above method, the present invention judge multi-connected machine when heating indoor heat exchanger whether the method for hydrops and existing skill
Art is compared, and is had the following advantages：
In this way, efficient and convenient can accurately judge inside the indoor unit whether hydrops, solve in industry always
The technical barrier of objective reality.
Description of the drawings
Fig. 1 be the present invention judge heat when multi-connected machine indoor heat exchanger whether the systematic schematic diagram of the method for hydrops.
As shown in the figure 1, indoor fan, 2, interior machine electric expansion valve, 3, compressor, 4, indoor heat exchanger.
Specific implementation mode
The invention will be further described in the following with reference to the drawings and specific embodiments.
As shown in Figure 1, the present invention judge heating when multi-connected machine indoor heat exchanger whether the method for hydrops, specific steps
It is as follows.
A, it is run under heating mode.
First emphasize that a concept, indoor unit booting refer to that the indoor fan 1 of indoor unit is switched on, and the interior electromechanics of indoor unit
Sub- expansion valve 2 is also opened, indoor unit shutdown, refers to that the indoor fan 1 of indoor unit shuts down, and interior machine electric expansion valve 2 is still just
Often open.
If indoor unit is all switched on, judge whether to meet following two conditions simultaneously：1, the corresponding saturation of pressure at expulsion
Temperature is in the range of 50 DEG C~53 DEG C；2, the coil pipe middle portion temperature Tem for the indoor unit being switched on is in the range of 40 DEG C~43 DEG C；
If met simultaneously, then b is entered step, if asynchronously met, exits judgement, and judge not hydrops.In 3 exhaust outlet of compressor
As soon as setting pressure sensor can obtain the corresponding saturation temperature of the pressure to measure pressure at expulsion, then by pressure at expulsion.
If indoor unit part is switched on, judge whether to meet following three conditions simultaneously：1, the corresponding saturation of pressure at expulsion
Temperature is in the range of 50 DEG C~53 DEG C；2, the coil pipe middle portion temperature Tem for the indoor unit being switched on is in the range of 40 DEG C~43 DEG C；
3, the coil pipe middle portion temperature Tem for the indoor unit being not keyed up is in the range of 45 DEG C~48 DEG C；If met simultaneously, then b is entered step,
If asynchronously met, judgement is exited, and judge not hydrops.
B, one by one to each be switched on indoor unit be detected, judge every booting indoor unit whether and meanwhile satisfaction with
Lower two conditions：1, the coil inlet temperature Te1 for the indoor unit being switched on subtracts the coil outlets of same indoor unit of the booting
Temperature Te2 is greater than or equal to 30 DEG C；2, the coil pipe middle portion temperature Tem for the indoor unit being switched on subtracts same indoor unit of the booting
Coil outlet temperature Te2 be greater than or equal to 10 DEG C；If meeting above-mentioned condition simultaneously, judge inside the indoor unit of the booting
Hydrops；If asynchronously met, not hydrops is judged.
Three entrance of the coil pipe of the indoor heat exchanger 4 of machine, middle part, outlet setting temperature sensors indoors, with respectively
Measure coil inlet temperature Te1, coil pipe middle portion temperature Tem and Coil outlet temperature Te2.
Claims (1)
1. it is a kind of judge heating when multi-connected machine indoor heat exchanger whether the method for hydrops, it is characterised in that：Its specific steps is such as
Under：
A, it is run under heating mode；
If indoor unit is all switched on, judge whether to meet following two conditions simultaneously：1), the corresponding saturation temperature of pressure at expulsion
In the range of 50 DEG C~53 DEG C；2), the coil pipe middle portion temperature Tem for the indoor unit being switched on is in the range of 40 DEG C~43 DEG C；Such as
Meet simultaneously, then enter step b, if asynchronously met, exits judgement；
If indoor unit part is switched on, judge whether to meet following three conditions simultaneously：1), the corresponding saturation temperature of pressure at expulsion
In the range of 50 DEG C~53 DEG C；2), the coil pipe middle portion temperature Tem for the indoor unit being switched on is in the range of 40 DEG C~43 DEG C；3)、
The coil pipe middle portion temperature Tem for the indoor unit being not keyed up is in the range of 45 DEG C~48 DEG C；If met simultaneously, then b is entered step, such as
Meet when fruit difference, then exits judgement；
B, one by one to each be switched on indoor unit be detected, judge every booting indoor unit whether simultaneously satisfaction below two
A condition：1), the Coil outlet temperature Te2 for the indoor unit that the coil inlet temperature Te1 for the indoor unit being switched on subtracts the booting is big
In or equal to 30 DEG C；2), the coil pipe middle portion temperature Tem for the indoor unit being switched on subtracts the Coil outlet temperature of the indoor unit of the booting
Te2 is greater than or equal to 10 DEG C；If meeting above-mentioned condition simultaneously, hydrops inside the indoor unit of the booting is judged；If different
When meet, then judge not hydrops.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510980955.2A CN105526676B (en) | 2015-12-23 | 2015-12-23 | Judge heating when multi-connected machine indoor heat exchanger whether the method for hydrops |
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| CN201510980955.2A CN105526676B (en) | 2015-12-23 | 2015-12-23 | Judge heating when multi-connected machine indoor heat exchanger whether the method for hydrops |
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| CN105526676A CN105526676A (en) | 2016-04-27 |
| CN105526676B true CN105526676B (en) | 2018-07-27 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106545958B (en) * | 2016-10-11 | 2019-07-26 | 广东美的暖通设备有限公司 | Multi-line system and its insufficient determination method of indoor unit refrigerating capacity |
| CN106403201B (en) * | 2016-11-10 | 2019-03-15 | 广东美的暖通设备有限公司 | The control method and air conditioner of the fresh air machine heat exchanger hydrops of air conditioner |
| CN107036243B (en) * | 2017-04-24 | 2019-11-15 | 广东美的暖通设备有限公司 | Indoor unit prompts control method and system, indoor unit, multi-connected machine central air-conditioning |
| CN111023261B (en) * | 2019-12-17 | 2021-07-16 | 宁波奥克斯电气股份有限公司 | Method and device for reducing on-line noise of multi-connected unit and multi-connected unit |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08313125A (en) * | 1995-05-23 | 1996-11-29 | Sanyo Electric Co Ltd | Abnormally detecting method of pressure sensor and temperature sensor in refrigerating device |
| JP2004132610A (en) * | 2002-10-10 | 2004-04-30 | Mitsubishi Electric Corp | Heating system and dwelling house with heating system |
| CN102261719A (en) * | 2011-05-25 | 2011-11-30 | 宁波奥克斯电气有限公司 | Control method for starting heating mode of screw-type compressed multi-connected central air conditioner |
| CN102914027A (en) * | 2012-09-20 | 2013-02-06 | 宁波奥克斯电气有限公司 | Control method for preventing refrigerant of outdoor unit from bias flowing during refrigeration of multi-split air-conditioning unit |
| CN103075774A (en) * | 2013-01-09 | 2013-05-01 | 合肥天鹅制冷科技有限公司 | Combined air handling unit driven by total heat recovery type heat pump |
| CN103791587A (en) * | 2014-01-21 | 2014-05-14 | 宁波奥克斯电气有限公司 | Method for judging whether resistance values of temperature sensors of multi-union air conditioner of heating mode deviate |
-
2015
- 2015-12-23 CN CN201510980955.2A patent/CN105526676B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08313125A (en) * | 1995-05-23 | 1996-11-29 | Sanyo Electric Co Ltd | Abnormally detecting method of pressure sensor and temperature sensor in refrigerating device |
| JP2004132610A (en) * | 2002-10-10 | 2004-04-30 | Mitsubishi Electric Corp | Heating system and dwelling house with heating system |
| CN102261719A (en) * | 2011-05-25 | 2011-11-30 | 宁波奥克斯电气有限公司 | Control method for starting heating mode of screw-type compressed multi-connected central air conditioner |
| CN102914027A (en) * | 2012-09-20 | 2013-02-06 | 宁波奥克斯电气有限公司 | Control method for preventing refrigerant of outdoor unit from bias flowing during refrigeration of multi-split air-conditioning unit |
| CN103075774A (en) * | 2013-01-09 | 2013-05-01 | 合肥天鹅制冷科技有限公司 | Combined air handling unit driven by total heat recovery type heat pump |
| CN103791587A (en) * | 2014-01-21 | 2014-05-14 | 宁波奥克斯电气有限公司 | Method for judging whether resistance values of temperature sensors of multi-union air conditioner of heating mode deviate |
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