CN112097367A - Air conditioner defrosting control method - Google Patents

Air conditioner defrosting control method Download PDF

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Publication number
CN112097367A
CN112097367A CN202010913046.8A CN202010913046A CN112097367A CN 112097367 A CN112097367 A CN 112097367A CN 202010913046 A CN202010913046 A CN 202010913046A CN 112097367 A CN112097367 A CN 112097367A
Authority
CN
China
Prior art keywords
unit
temperature
equal
defrosting
control method
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010913046.8A
Other languages
Chinese (zh)
Inventor
胡用
杨亚华
梅奎
江俊
胡手槟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing TICA Climate Solutions Co Ltd
Original Assignee
Nanjing TICA Climate Solutions Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanjing TICA Climate Solutions Co Ltd filed Critical Nanjing TICA Climate Solutions Co Ltd
Priority to CN202010913046.8A priority Critical patent/CN112097367A/en
Publication of CN112097367A publication Critical patent/CN112097367A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • F24F11/41—Defrosting; Preventing freezing
    • F24F11/42—Defrosting; Preventing freezing of outdoor units
    • 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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • 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
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • 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
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • 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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • 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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • 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
    • F24F11/88—Electrical aspects, e.g. circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature

Abstract

The invention relates to a control method for defrosting of an air conditioner, which comprises the following steps: the following operating parameters of the unit are acquired in real time: the outdoor temperature of the unit, the outdoor coil temperature, the exhaust temperature of the compressor, the inlet water or outlet water temperature of the unit and the heating running time; comparing the parameter with a set value; and judging whether the conditions of in-out defrosting operation are met or not. The invention can effectively avoid the problem that the prior unit is shut down and protected because the exhaust temperature is too high due to untimely judgment, and creates favorable conditions for improving the stable and reliable operation of the unit.

Description

Air conditioner defrosting control method
Technical Field
The invention relates to an air conditioner control method, in particular to a control method of an air-cooled water chilling unit, and specifically relates to an air conditioner defrosting control method.
Background
When the air conditioner is operated in winter for heating, the surface temperature of the outdoor condenser can reach below zero, so that the surface of the outdoor condenser can be frosted, and defrosting can be timely carried out, so that the air conditioner has great significance on the performance of the capacity of a unit and the reliability of the unit.
At present, because the environment of a use area is severe, in some days with heavy fog, snow or high humidity, the low-temperature heating type air-cooled water chilling unit frosts quickly, the environment temperature is low, the required water temperature is high, the pressure ratio of a compressor is too large, and the temperature rise of the compressor is too fast. In the conventional defrosting process, whether to enter defrosting is generally determined by the relationship between the temperature of the outer plate, the ambient temperature and the time. However, when the low-temperature heating type unit is subjected to the treatment method, the problem of over-high protection of the exhaust temperature due to untimely judgment is easy to occur. Therefore, improvements are needed.
Disclosure of Invention
The invention aims to provide an air conditioner defrosting control method aiming at the problems encountered in the defrosting of an air-cooled water chilling unit at present, so that the judgment of the defrosting time can be more timely and accurate, the defrosting efficiency is improved, and the normal operation of the unit is ensured.
The technical scheme of the invention is as follows:
an air conditioner defrosting control method is applied to an air-cooled water chilling unit and comprises the following steps:
1) the unit enters into heating operation;
2) detecting an environment temperature TH1, an outdoor unit coil temperature TH0, a unit water inlet temperature or water outlet temperature TH3, a compressor exhaust temperature TH2 and a heating operation time T;
3) if both: TH1-TH0 is more than or equal to THB, TH3 is more than or equal to THC, TH2 is more than or equal to THD, T is more than or equal to Time2, or simultaneously: TH1-TH0 is more than or equal to THA, T is more than or equal to Time1, and defrosting is carried out; otherwise, turning to the step 1);
wherein: THA, THB, THC, THD, Time1 and Time2 are all preset parameters; time1 is greater than or equal to Time 2; THA is more than or equal to THB;
4) continuously detecting the temperature TH0 of the coil pipe of the outdoor unit, and simultaneously detecting the high pressure P of the unit, the running current C of the unit, the exhaust temperature TH2 of the compressor and the defrosting duration TC;
5) and if any one of the following conditions is met, the defrosting mode is exited, and the step 1) is turned on:
TH0≥T1；P≥P1；C≥C1；TH2≥T2；TC≥Time3；
wherein: t is1、P1、C1、T2And Time3 are both preset parameters.
Further, the THA is 6-20 ℃; THB is 6-20 ℃; THC is 38-55 deg.C or 43-60 deg.C; the THD is 90-115 ℃.
The invention has the beneficial effects that:
the invention has reasonable design, clear logic and convenient operation, can timely and accurately judge the opportunity of entering and exiting defrosting operation by detecting and comparing a plurality of parameters, greatly improves the defrosting efficiency and creates favorable conditions for improving the reliability and stability of the operation of the air conditioning unit.
Detailed Description
The present invention will be further described with reference to the following examples.
An air conditioner defrosting control method is applied to an air-cooled water chilling unit and comprises the following steps:
1) the unit enters into heating operation;
2) detecting an environment temperature TH1, an outdoor unit coil temperature TH0, a unit water inlet temperature or water outlet temperature TH3, a compressor exhaust temperature TH2 and a heating operation time T;
3) if both: TH1-TH0 is more than or equal to THB, TH3 is more than or equal to THC, TH2 is more than or equal to THD, T is more than or equal to Time2, or simultaneously: TH1-TH0 is more than or equal to THA, T is more than or equal to Time1, and defrosting is carried out; otherwise, turning to the step 1);
wherein: THA, THB, THC, THD, Time1 and Time2 are all preset parameters; time1 is greater than or equal to Time 2; THA is more than or equal to THB;
4) continuously detecting the temperature TH0 of the coil pipe of the outdoor unit, and simultaneously detecting the high pressure P of the unit, the running current C of the unit, the exhaust temperature TH2 of the compressor and the defrosting duration TC;
5) and if any one of the following conditions is met, the defrosting mode is exited, and the step 1) is turned on:
TH0≥T1；P≥P1；C≥C1；TH2≥T2；TC≥Time3；
wherein: t is1、P1、C1、T2And Time3 are both preset parameters.
The THA is related to the ambient temperature, and can be graded according to the ambient temperature, and different values are set, generally 6-20 ℃;
the THB is related to the ambient temperature, and can be graded according to the ambient temperature, and different values are set, generally 6-20 ℃;
when the THC is used as the temperature of inlet water, the temperature is set to be 38-55 ℃; as the outlet water temperature, the following are set: 43-60 ℃;
the THD is 90-115 ℃;
the Time1 is 25-60 min; time2 is 5-25 min; time3 is 4-15 min;
the T is1Is 8-20 ℃; t is2105 ℃ to 120 DEG C
The P is1The maximum pressure of the unit operation is 0.5-the maximum pressure of the unit operation;
said C is1The maximum current of the unit is 0.7-0.95.
The invention can judge whether the condition of entering or exiting defrosting is met or not by detecting a plurality of parameters when the unit operates in a heating mode, effectively avoids the problem of unit shutdown protection caused by overhigh exhaust temperature due to untimely judgment, which is easy to occur in the prior art, and creates favorable conditions for improving the stable and reliable operation of the unit.
The parts not involved in the present invention are the same as or can be implemented using the prior art.

Claims (2)

1. An air conditioner defrosting control method is applied to an air-cooled water chilling unit and is characterized in that: the control method comprises the following steps:
1) the unit enters into heating operation;
2) detecting an environment temperature TH1, an outdoor unit coil temperature TH0, a unit water inlet temperature or water outlet temperature TH3, a compressor exhaust temperature TH2 and a heating operation time T;
3) if both: TH1-TH0 is more than or equal to THB, TH3 is more than or equal to THC, TH2 is more than or equal to THD, T is more than or equal to Time2, or simultaneously: TH1-TH0 is more than or equal to THA, T is more than or equal to Time1, and defrosting is carried out; otherwise, turning to the step 1);
wherein: THA, THB, THC, THD, Time1 and Time2 are all preset parameters; time1 is greater than or equal to Time 2; THA is more than or equal to THB;
4) continuously detecting the temperature TH0 of the coil pipe of the outdoor unit, and simultaneously detecting the high pressure P of the unit, the running current C of the unit, the exhaust temperature TH2 of the compressor and the defrosting duration TC;
5) and if any one of the following conditions is met, the defrosting mode is exited, and the step 1) is turned on:
TH0≥T1；P≥P1；C≥C1；TH2≥T2；TC≥Time3；
wherein: t is1、P1、C1、T2And Time3 are both preset parameters.
2. The defrosting control method of an air conditioner according to claim 1, wherein: the THA is 6-20 ℃; THB is 6-20 ℃; THC is 38-55 deg.C or 43-60 deg.C; the THD is 90-115 ℃.
CN202010913046.8A 2020-09-03 2020-09-03 Air conditioner defrosting control method Pending CN112097367A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010913046.8A CN112097367A (en) 2020-09-03 2020-09-03 Air conditioner defrosting control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010913046.8A CN112097367A (en) 2020-09-03 2020-09-03 Air conditioner defrosting control method

Publications (1)

Publication Number Publication Date
CN112097367A true CN112097367A (en) 2020-12-18

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112902389A (en) * 2021-02-08 2021-06-04 珠海格力电器股份有限公司 Method, device and equipment for defrosting air conditioner and storage medium
CN114234450A (en) * 2021-12-24 2022-03-25 山东雅士股份有限公司 Variable-frequency CO2Water heater unit and control method thereof
CN114963291A (en) * 2021-06-29 2022-08-30 青岛海尔新能源电器有限公司 Heating machine control method, device, equipment and storage medium
CN115654653A (en) * 2022-11-11 2023-01-31 珠海格力电器股份有限公司 Defrosting control method of air conditioning system and air conditioning system

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100606275B1 (en) * 2004-12-29 2006-08-01 위니아만도 주식회사 Defrosting control method of air-conditioner used both cooler and heater
CN101187516A (en) * 2006-11-17 2008-05-28 海尔集团公司 Air-conditioner defrosting method
CN101303185A (en) * 2008-05-22 2008-11-12 宁波奥克斯电气有限公司 Defrosting method for heat pump type air conditioner
CN103123194A (en) * 2012-03-31 2013-05-29 宁波奥克斯电气有限公司 Defrosting method of multi-combination type air conditioning unit
CN104214885A (en) * 2013-05-29 2014-12-17 珠海格力电器股份有限公司 Air-conditioner defrosting control method and device and air-conditioner
CN106801955A (en) * 2017-01-17 2017-06-06 青岛海信日立空调系统有限公司 A kind of air-to-water heat pump system and control method
CN109386966A (en) * 2018-09-21 2019-02-26 珠海格力电器股份有限公司 Defrosting control method, device, storage medium and the heat pump unit of heat pump unit
CN109442852A (en) * 2018-11-06 2019-03-08 宁波奥克斯电气股份有限公司 A kind of defrosting control method, device and air source heat pump
CN110131935A (en) * 2019-04-08 2019-08-16 广东纽恩泰新能源科技发展有限公司 A kind of heat pump system defrosting control method
CN110470012A (en) * 2019-08-02 2019-11-19 青岛海尔空调器有限总公司 Control method and device, air-conditioning for air-conditioner defrosting
CN110542175A (en) * 2019-09-06 2019-12-06 珠海格力电器股份有限公司 air conditioner defrosting method

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100606275B1 (en) * 2004-12-29 2006-08-01 위니아만도 주식회사 Defrosting control method of air-conditioner used both cooler and heater
CN101187516A (en) * 2006-11-17 2008-05-28 海尔集团公司 Air-conditioner defrosting method
CN101303185A (en) * 2008-05-22 2008-11-12 宁波奥克斯电气有限公司 Defrosting method for heat pump type air conditioner
CN103123194A (en) * 2012-03-31 2013-05-29 宁波奥克斯电气有限公司 Defrosting method of multi-combination type air conditioning unit
CN104214885A (en) * 2013-05-29 2014-12-17 珠海格力电器股份有限公司 Air-conditioner defrosting control method and device and air-conditioner
CN106801955A (en) * 2017-01-17 2017-06-06 青岛海信日立空调系统有限公司 A kind of air-to-water heat pump system and control method
CN109386966A (en) * 2018-09-21 2019-02-26 珠海格力电器股份有限公司 Defrosting control method, device, storage medium and the heat pump unit of heat pump unit
CN109442852A (en) * 2018-11-06 2019-03-08 宁波奥克斯电气股份有限公司 A kind of defrosting control method, device and air source heat pump
CN110131935A (en) * 2019-04-08 2019-08-16 广东纽恩泰新能源科技发展有限公司 A kind of heat pump system defrosting control method
CN110470012A (en) * 2019-08-02 2019-11-19 青岛海尔空调器有限总公司 Control method and device, air-conditioning for air-conditioner defrosting
CN110542175A (en) * 2019-09-06 2019-12-06 珠海格力电器股份有限公司 air conditioner defrosting method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112902389A (en) * 2021-02-08 2021-06-04 珠海格力电器股份有限公司 Method, device and equipment for defrosting air conditioner and storage medium
CN114963291A (en) * 2021-06-29 2022-08-30 青岛海尔新能源电器有限公司 Heating machine control method, device, equipment and storage medium
CN114963291B (en) * 2021-06-29 2023-11-17 青岛海尔新能源电器有限公司 Heating machine control method, device, equipment and storage medium
CN114234450A (en) * 2021-12-24 2022-03-25 山东雅士股份有限公司 Variable-frequency CO2Water heater unit and control method thereof
CN114234450B (en) * 2021-12-24 2023-09-08 山东雅士股份有限公司 Variable frequency CO 2 Control method of water heater unit
CN115654653A (en) * 2022-11-11 2023-01-31 珠海格力电器股份有限公司 Defrosting control method of air conditioning system and air conditioning system
CN115654653B (en) * 2022-11-11 2024-05-07 珠海格力电器股份有限公司 Defrosting control method of air conditioning system and air conditioning system

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Application publication date: 20201218

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