CN106766449A - A kind of compressor protection method during air-conditioning heating HTHP - Google Patents

A kind of compressor protection method during air-conditioning heating HTHP Download PDF

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Publication number
CN106766449A
CN106766449A CN201710000432.6A CN201710000432A CN106766449A CN 106766449 A CN106766449 A CN 106766449A CN 201710000432 A CN201710000432 A CN 201710000432A CN 106766449 A CN106766449 A CN 106766449A
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China
Prior art keywords
control system
outdoor fan
value
temperature
air
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CN201710000432.6A
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CN106766449B (en
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曾友坚
陈东
尚彬
熊昆
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Aux Air Conditioning Co Ltd
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Aux Air Conditioning Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022—Compressor control arrangements

Abstract

The invention provides compressor protection method during a kind of air-conditioning heating HTHP, comprise the following steps, S1, preset outer machine current maxima I1With higher value I2, coil temperature maximum of T1With higher value T2；S2, in a heating mode, the outer electromechanics flow valuve I of current sensor detection, temperature sensor detection coil pipe temperature value T, control system determination methods are as follows：1. as I >=I1When, control system control outdoor fan is stopped, and performs S3；2. I is worked as<I1And T >=T1When, control system control outdoor fan is stopped, and performs S3；3. I is worked as2≤I<I1And T2≤T<T1When, control system control outdoor fan is stopped, and performs S3；S3, control system judge whether to meet recovery condition one or recovery condition two, recover condition one, work as I<I2And T<T1When, outdoor fan is resumed work, and returns to S2；Recovery condition two, works as T<T2And I<I1When, outdoor fan is resumed work, and returns to S2；After above method, air-conditioning system high temperature-proof high pressure accuracy is high.

Description

A kind of compressor protection method during air-conditioning heating HTHP
Technical field
The present invention relates to air-conditioning technical field, and in particular to compressor protection side during a kind of air-conditioning heating HTHP Method.
Background technology
Existing fixed frequency air conditioner typically has both of which, refrigeration mode and heating mode, and compressor is air-conditioner Significant components, it is existing for HTHP in a heating mode when compressor protection method, it is general using measurement indoor set The guard method of heat exchanger middle part coil temperature, i.e., be provided with temperature detector on coil pipe, is examined by C.T detector The temperature and preset temperature for measuring, the working condition of the outdoor electromechanics machine of control, the temperature that temperature detector is detected is more than default During value, then close outdoor motor, outdoor fan is stopped, air-conditioning system overall load reduction, air-conditioning system high-pressure with Reduction, but there is following defect in the method：Because temperature sensor detection exists delayed, meet when temperature sensor is detected When closing the temperature value of outdoor motor, now the electric current of outdoor motor is often excessive, the increase of air-conditioning system overall load, while Because coil temperature can not be completely corresponding with air-conditioning system high-pressure, coil temperature is less than the corresponding saturation temperature of high-pressure Degree, therefore when air-conditioning system temperature exceedes design temperature, it is impossible to while ensuring that air-conditioning system high-pressure is pressed no more than design Power.Therefore when temperature sensor detect temperature more than design temperature when, now compressor the long period under high-pressure Work, compressor current is excessive, and heating in winding is more, and cylinder pressurization ratio is deteriorated, easy shutdown, reduced lifetime etc., and compressor stops After work, air-conditioning system high temperature-proof high voltage protective accuracy is poor, and air-conditioning heating pattern cannot continue to indoor offer heat after stopping Amount, user experience declines.
The content of the invention
The invention provides during a kind of a kind of good air-conditioning heating HTHP of air-conditioning system high temperature-proof high pressure accuracy Compressor protection method.
The technical solution used in the present invention is：A kind of compressor protection method during air-conditioning heating HTHP, including Following steps,
S1, the advance outer machine current maxima I of setting in the controls1With higher value I2, and I2<I1；Setting coil temperature Maximum of T1With higher value T2, and T2<T1；
S2, under air-conditioning heating pattern, the outer electromechanics flow valuve I of current sensor real-time detection, temperature sensor real-time detection Coil temperature value T, control system judges size between current detection value and current setting value and judges temperature detection value with temperature Size between degree setting value, specific determination methods are as follows：
1. as I >=I1When, control system sends instruction, stops being powered to outdoor fan, and outdoor fan is stopped, and performs Step S3；
2. I is worked as<I1When, control system judges coil temperature value T and setting value T1Size, as T >=T1When, control system Instruction is sent, stops being powered to outdoor fan, outdoor fan is stopped, perform step S3；
3. I is worked as<I1And T<T1When, control system judges outer electromechanics flow valuve I and current setting value I2Size and coil temperature Value T and desired temperature T2Size, work as I2≤I<I1And T2≤T<T1When, control system sends instruction, stops to outdoor fan Power supply, outdoor fan is stopped, and performs step S3；
S3, control system judge whether current detection value and temperature detection value meet recovery condition one or recovery condition two,
Described recovery condition one is to work as I<I2And T<T1When, then control system sends instruction, recovers to be supplied to outdoor fan Electricity, outdoor fan is resumed work, return to step S2；
Described recovery condition two is to work as T<T2And I<I1When, then control system sends instruction, recovers to be supplied to outdoor fan Electricity, outdoor fan is resumed work, return to step S2；
After above method, the present invention has advantages below compared with prior art：
The present invention sets I1、I2、T1、T2Judge electric current and temperature Deng multiple, current sensor detection current value is timely, Without delayed, while coordinating temperature sensor again, control system can promptly and accurately obtain electric current and temperature items detected value, and then Adjust the working condition of air-conditioning, it is to avoid compressor works at high temperature under high pressure, the working time of compressor increases, air-conditioning heating mould The formula time is long, and high temperature-proof high pressure accuracy is good.When outer electromechanical flow valuve I or temperature value T meets the condition of setting, control system is just Control outdoor fan is stopped, and in the moment that outdoor fan stops, condensing pressure, i.e. high-pressure are constant, and outdoor fan stops After only working, outdoor heat exchanger heat transfer effect declines, evaporating temperature reduction, thus evaporating pressure reduction, i.e. low pressure reduction, Now the pressure difference between high-pressure and low pressure becomes big, and pressure difference becomes causes air-conditioning system cold medium flux to diminish greatly, compressor Pressure at expulsion declines, and high-pressure declines, so that it is guaranteed that compressor runs in normal current, normally-pressured neighbor.
Brief description of the drawings
Fig. 1 is flow chart of the present invention
Specific embodiment
As shown in figure 1, compressor protection method during a kind of air-conditioning heating HTHP is comprised the following steps that：
S1, the advance outer machine current maxima I of setting in the controls1With higher value I2, and I2<I1；Setting coil temperature Maximum of T1With higher value T2, and T2<T1；
S2, under air-conditioning heating pattern, the outer electromechanics flow valuve I of current sensor real-time detection, temperature sensor real-time detection Coil temperature value T, control system judges size between current detection value and current setting value and judges temperature detection value with temperature Size between degree setting value, specific determination methods are as follows：
1. as I >=I1When, control system sends instruction, stops being powered to outdoor fan, and outdoor fan is stopped, and performs Step S3；
2. I is worked as<I1When, control system judges coil temperature value T and setting value T1Size, as T >=T1When, control system Instruction is sent, stops being powered to outdoor fan, outdoor fan is stopped, perform step S3；
3. I is worked as<I1And T<T1When, control system judges outer electromechanics flow valuve I and current setting value I2Size and coil temperature Value T and desired temperature T2Size, work as I2≤I<I1And T2≤T<T1When, control system sends instruction, stops to outdoor fan Power supply, outdoor fan is stopped, and performs step S3；
S3, control system judge whether current detection value and temperature detection value meet recovery condition one or recovery condition two,
Described recovery condition one is to work as I<I2And T<T1When, then control system sends instruction, recovers to be supplied to outdoor fan Electricity, outdoor fan is resumed work, return to step S2；
Described recovery condition two is to work as T<T2And I<I1When, then control system sends instruction, recovers to be supplied to outdoor fan Electricity, outdoor fan is resumed work, return to step S2；
According to the difference of rated cooling capacity, the I1Span be 8A-15A, I2Span be 7A-13A, tool Body is,
When rated cooling capacity is 5000W, the I1It is 15A, I2It is 13A；
When rated cooling capacity is 3500W, the I1It is 11A, I2It is 9A；
When rated cooling capacity is 2600W, the I1It is 8A, I2It is 7A；
Outer electromechanical flow valuve I includes the current value of the current value and outdoor fan by compressor, in a heating mode, passes through The outer electromechanics flow valuve I of current sensor detection promptly and accurately, compensate for the delayed problem of temperature sensor detected value, and control system is sentenced Disconnected outer electromechanics flow valuve I and preset value I1Size, I1For outer electromechanical stream allows the maximum current value that passes through, as long as now I >=I1, Control system just controls outdoor fan to stop, and reduces outer machine load, system high pressure pressure reduction, it is ensured that compressor is in normal pressure Operated within range.
Work as I<I1When, coil pipe temperature value T, T are detected by temperature sensor1It is the maximum temperature values of coil temperature, now only Want T >=T1When, control system just controls outdoor fan to stop, and reduces air-conditioning system load, reduces temperature, it is to avoid compressor exists Worked under high temperature.
Work as I<I1And T<T1When, respectively by current sensor and the outer electromechanics flow valuve I of temperature sensor real-time detection and coil pipe Temperature value T, the outer electromechanics flow valuve I and preset value I of now control system judgement detection2Size and coil temperature value T and preset value T2 Size, I2It is larger current, meets relations I2<I1And and I1Between difference it is smaller, T2It is higher temperature, meets relation T2<T1 And and T1Between difference it is smaller, work as I2≤I<I1And T2≤T<T1When, now air-conditioning system is in the shape that electric current is larger, temperature is higher State, therefore control system control outdoor fan stopping, it is ensured that the running environment of compressor is in the shape that electric current is smaller, temperature is relatively low State.
Recovery condition one, works as I<I2And T<T1When, outer electromechanical flow valuve now is smaller, as long as temperature is less than maximum temperature T1 , now controller just control outdoor fan to resume work.
Recovery condition two, works as T<T2And I<I1When, coil temperature now is relatively low, as long as electric current is less than maximum current I1I.e. Can, now controller just controls outdoor motor to resume work.
If be unsatisfactory for recovery condition one and recovery condition two simultaneously, controller just persistently judges outer electromechanics flow valuve I and disk Pipe temperature value T, until meet recovery condition one or recovery condition two, untill control system control outdoor fan is resumed work.
The present invention adjusts the load of air-conditioning system, preferentially by the working condition of control outdoor fan in a heating mode Ensure the working condition of compressor, it is to avoid the problems such as compressor works and causes chaser machine, service life reduction at high temperature under high pressure, pressure Contracting machine normal work then can persistently provide a user with institute's calorific requirement, and user satisfaction is high.

Claims (5)

1. compressor protection method during a kind of air-conditioning heating HTHP, it is characterised in that：Comprise the following steps,
S1, the advance outer machine current maxima I of setting in the controls1With higher value I2, and I2<I1；Setting coil temperature is maximum Value T1With higher value T2, and T2<T1；
S2, under air-conditioning heating pattern, the outer electromechanics flow valuve I of current sensor real-time detection, temperature sensor real-time detection coil pipe Temperature value T, control system judges size between current detection value and current setting value and judges that temperature detection value sets with temperature Size between definite value, specific determination methods are as follows：
1. as I >=I1When, control system sends instruction, stops being powered to outdoor fan, and outdoor fan is stopped, and performs step S3；
2. I is worked as<I1When, control system judges coil temperature value T and setting value T1Size, as T >=T1When, control system sends Instruction, stops being powered to outdoor fan, and outdoor fan is stopped, and performs step S3；
3. I is worked as<I1And T<T1When, control system judges outer electromechanics flow valuve I and current setting value I2Size and coil temperature value T With desired temperature T2Size, work as I2≤I<I1And T2≤T<T1When, control system sends instruction, stops being supplied to outdoor fan Electricity, outdoor fan is stopped, and performs step S3；
S3, control system judge whether current detection value and temperature detection value meet recovery condition one or recovery condition two,
Described recovery condition one is to work as I<I2And T<T1When, then control system sends instruction, recovers to be powered to outdoor fan, room Outer blower fan is resumed work, return to step S2；
Described recovery condition two is to work as T<T2And I<I1When, then control system sends instruction, recovers to be powered to outdoor fan, room Outer blower fan is resumed work, return to step S2.
2. compressor protection method during a kind of air-conditioning heating HTHP according to claim 1, it is characterised in that：56 ℃≤T1≤60℃。
3. compressor protection method during a kind of air-conditioning heating HTHP according to claim 1, it is characterised in that：50 ℃≤T2<54℃。
4. compressor protection method during a kind of air-conditioning heating HTHP according to claim 1, it is characterised in that：8A ≤I1≤15A。
5. compressor protection method during a kind of air-conditioning heating HTHP according to claim 1, it is characterised in that：7A ≤I2≤13A。
CN201710000432.6A 2017-01-03 2017-01-03 A kind of compressor protection method when air-conditioning heating high temperature and pressure Active CN106766449B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110044005A (en) * 2019-05-08 2019-07-23 宁波奥克斯电气股份有限公司 A kind of air conditioning control method, device and air-conditioning
CN110077196A (en) * 2019-04-17 2019-08-02 青岛海信电子设备股份有限公司 A kind of air condition with camion and its control method
CN113048681A (en) * 2021-03-29 2021-06-29 深圳市深蓝电子股份有限公司 Protection method and device for heat pump unit compressor
CN115031391A (en) * 2022-05-26 2022-09-09 珠海格力电器股份有限公司 Air conditioner control method and device, storage medium and electronic equipment

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1026391A (en) * 1996-07-10 1998-01-27 Fujitsu General Ltd Method for controlling air conditioner
KR0140062B1 (en) * 1993-05-21 1998-07-01 김광호 Overload control method of air conditioner
CN106196494A (en) * 2016-08-01 2016-12-07 珠海格力电器股份有限公司 A kind of complete machine overload control method and device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0140062B1 (en) * 1993-05-21 1998-07-01 김광호 Overload control method of air conditioner
JPH1026391A (en) * 1996-07-10 1998-01-27 Fujitsu General Ltd Method for controlling air conditioner
CN106196494A (en) * 2016-08-01 2016-12-07 珠海格力电器股份有限公司 A kind of complete machine overload control method and device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110077196A (en) * 2019-04-17 2019-08-02 青岛海信电子设备股份有限公司 A kind of air condition with camion and its control method
CN110044005A (en) * 2019-05-08 2019-07-23 宁波奥克斯电气股份有限公司 A kind of air conditioning control method, device and air-conditioning
CN113048681A (en) * 2021-03-29 2021-06-29 深圳市深蓝电子股份有限公司 Protection method and device for heat pump unit compressor
CN115031391A (en) * 2022-05-26 2022-09-09 珠海格力电器股份有限公司 Air conditioner control method and device, storage medium and electronic equipment
CN115031391B (en) * 2022-05-26 2023-10-13 珠海格力电器股份有限公司 Air conditioner control method and device, storage medium and electronic equipment

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