CN111271820A - Method for judging failure of four-way valve of air-cooled air conditioning unit - Google Patents

Method for judging failure of four-way valve of air-cooled air conditioning unit Download PDF

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Publication number
CN111271820A
CN111271820A CN202010141530.3A CN202010141530A CN111271820A CN 111271820 A CN111271820 A CN 111271820A CN 202010141530 A CN202010141530 A CN 202010141530A CN 111271820 A CN111271820 A CN 111271820A
Authority
CN
China
Prior art keywords
temperature sensor
way valve
unit
environment temperature
heat exchanger
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.)
Withdrawn
Application number
CN202010141530.3A
Other languages
Chinese (zh)
Inventor
王云利
杨亚华
徐来福
朱昌盛
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 CN202010141530.3A priority Critical patent/CN111271820A/en
Publication of CN111271820A publication Critical patent/CN111271820A/en
Withdrawn legal-status Critical Current

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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
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F11/38—Failure diagnosis
    • 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
    • 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
    • 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
    • F24F2110/20—Humidity
    • 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 method for judging failure of a four-way valve of an air-cooled air conditioning unit, which comprises the following steps: 1) starting up the unit to run, and starting timing by the controller; if the mode is the refrigeration mode, turning to the step 2); if the heating mode is adopted, turning to the step 6); 2) the unit operates for 5 minutesThen, the outer plate temperature T of the outdoor heat exchanger is obtained through an outer plate temperature sensorwpAnd obtaining the outdoor environment temperature T through an outdoor environment temperature sensorw(ii) a 3) If T iswp‑TwThe temperature is more than or equal to 5 ℃, and the step 4) is carried out; otherwise, turning to the step 5); 4) judging that the four-way valve is normal, and continuing to operate the unit; 5) judging that the four-way valve fails, stopping the unit and reporting a fault; 6) after the unit operates for 5 minutes, the inner disc temperature T of the indoor heat exchanger is obtained through the inner disc temperature sensorwnAnd obtaining the indoor environment temperature T through an indoor environment temperature sensorn(ii) a 7) If T iswn‑TnThe temperature is more than or equal to 5 ℃, and the step 4) is carried out; otherwise, go to step 5). The invention can conveniently and accurately judge the working state of the four-way valve and ensure the normal operation of the system.

Description

Method for judging failure of four-way valve of air-cooled air conditioning unit
Technical Field
The invention relates to an air conditioner control technology, in particular to a control method of an air-cooled air conditioning unit, and specifically relates to a method for judging failure of a four-way valve of the air-cooled air conditioning unit.
Background
When the air conditioning system operates under the working condition with small high-low pressure difference, the sliding sheet in the four-way valve does not move in place due to insufficient high-low pressure difference of the sliding sheet of the four-way valve. At present, a four-way valve is normal as a default of a common air-cooled air conditioning unit, once the four-way valve fails, the unit can continue to operate without failure, the unit is shut down, and particularly, when the four-way valve is in air leakage, the air suction and exhaust port can be directly communicated when a compressor operates. A pressure sensor is also adopted by the air-cooled air conditioning unit, whether the four-way valve fails or not is judged by monitoring high pressure and low pressure, but the cost for increasing the pressure sensor is too high, and the control is complicated. Therefore, improvements are urgently needed in order to meet market demands.
Disclosure of Invention
The invention aims to provide a method for judging the failure of a four-way valve of an air-cooled air conditioning unit aiming at the defects of the prior art, which can conveniently and accurately judge the working state of the four-way valve and ensure the normal operation of a system, has simple structure and convenient operation and control, can reduce the cost and is beneficial to product popularization.
The technical scheme of the invention is as follows:
a method for judging failure of a four-way valve of an air-cooled air conditioning unit comprises a refrigerant circulating system formed by connecting a compressor, an outdoor heat exchanger, an electronic expansion valve, an indoor heat exchanger and a gas-liquid separator, wherein an outer plate temperature sensor is arranged on the outdoor heat exchanger; an inner plate temperature sensor is arranged on the indoor heat exchanger; the system also comprises an indoor environment temperature sensor arranged indoors and an outdoor environment temperature sensor arranged outdoors; the outer disc temperature sensor, the inner disc temperature sensor, the indoor environment temperature sensor and the outdoor environment temperature sensor are electrically connected with a controller of the air conditioning unit; the controller is capable of timing; the judging method comprises the following steps:
1) starting up the unit to run, and starting timing by the controller; if the mode is the refrigeration mode, turning to the step 2); if the heating mode is adopted, turning to the step 6);
2) after the unit operates for 5 minutes, the outer plate temperature T of the outdoor heat exchanger is obtained through the outer plate temperature sensorwpAnd obtaining the outdoor environment temperature T through an outdoor environment temperature sensorw；
3) If T iswp-TwThe temperature is more than or equal to 5 ℃, and the step 4) is carried out; otherwise, turning to the step 5);
4) judging that the four-way valve is normal, and continuing to operate the unit;
5) judging that the four-way valve fails, stopping the unit and reporting a fault;
6) after the unit operates for 5 minutes, the inner disc temperature T of the indoor heat exchanger is obtained through the inner disc temperature sensorwnAnd obtaining the indoor environment temperature T through an indoor environment temperature sensorn；
7) If T iswn-TnThe temperature is more than or equal to 5 ℃, and the step 4) is carried out; otherwise, go to step 5).
The invention has the beneficial effects that:
the four-way valve has the advantages of reasonable design, simple structure, convenient operation and control, lower cost and suitability for popularization, and can conveniently and accurately judge the working state of the four-way valve and ensure the normal operation of a system.
Detailed Description
The present invention will be further described with reference to the following examples.
A method for judging failure of a four-way valve of an air-cooled air conditioning unit comprises a refrigerant circulating system formed by connecting a compressor, an outdoor heat exchanger, an electronic expansion valve, an indoor heat exchanger and a gas-liquid separator, wherein an outer plate temperature sensor is arranged on the outdoor heat exchanger; an inner plate temperature sensor is arranged on the indoor heat exchanger; the system also comprises an indoor environment temperature sensor arranged indoors and an outdoor environment temperature sensor arranged outdoors; the outer disc temperature sensor, the inner disc temperature sensor, the indoor environment temperature sensor and the outdoor environment temperature sensor are electrically connected with a controller of the air conditioning unit; the controller is capable of timing; the judging method comprises the following steps:
1) starting up the unit to run, and starting timing by the controller; if the mode is the refrigeration mode, turning to the step 2); if the heating mode is adopted, turning to the step 6);
2) after the unit operates for 5 minutes, the outer plate temperature T of the outdoor heat exchanger is obtained through the outer plate temperature sensorwpAnd obtaining the outdoor environment temperature T through an outdoor environment temperature sensorw；
3) If T iswp-TwThe temperature is more than or equal to 5 ℃, and the step 4) is carried out; otherwise, turning to the step 5);
4) judging that the four-way valve is normal, and continuing to operate the unit;
5) judging that the four-way valve fails, stopping the unit and reporting a fault;
6) after the unit operates for 5 minutes, the inner disc temperature T of the indoor heat exchanger is obtained through the inner disc temperature sensorwnAnd obtaining the indoor environment temperature T through an indoor environment temperature sensorn；
7) If T iswn-TnThe temperature is more than or equal to 5 ℃, and the step 4) is carried out; otherwise, go to step 5).
The parts not involved in the present invention are the same as or can be implemented using the prior art.

Claims (1)

1. A method for judging failure of a four-way valve of an air-cooled air conditioning unit comprises a refrigerant circulating system formed by connecting a compressor, an outdoor heat exchanger, an electronic expansion valve, an indoor heat exchanger and a gas-liquid separator, wherein an outer plate temperature sensor is arranged on the outdoor heat exchanger; an inner plate temperature sensor is arranged on the indoor heat exchanger; the system also comprises an indoor environment temperature sensor arranged indoors and an outdoor environment temperature sensor arranged outdoors; the outer disc temperature sensor, the inner disc temperature sensor, the indoor environment temperature sensor and the outdoor environment temperature sensor are electrically connected with a controller of the air conditioning unit; the controller is capable of timing; the method is characterized in that: the judging method comprises the following steps:
1) starting up the unit to run, and starting timing by the controller; if the mode is the refrigeration mode, turning to the step 2); if the heating mode is adopted, turning to the step 6);
2) after the unit operates for 5 minutes, the outer plate temperature T of the outdoor heat exchanger is obtained through the outer plate temperature sensorwpAnd obtaining the outdoor environment temperature T through an outdoor environment temperature sensorw；
3) If T iswp-TwThe temperature is more than or equal to 5 ℃, and the step 4) is carried out; otherwise, turning to the step 5);
4) judging that the four-way valve is normal, and continuing to operate the unit;
5) judging that the four-way valve fails, stopping the unit and reporting a fault;
6) after the unit operates for 5 minutes, the inner disc temperature T of the indoor heat exchanger is obtained through the inner disc temperature sensorwnAnd obtaining the indoor environment temperature T through an indoor environment temperature sensorn；
7) If T iswn-TnThe temperature is more than or equal to 5 ℃, and the step 4) is carried out; otherwise, go to step 5).
CN202010141530.3A 2020-03-04 2020-03-04 Method for judging failure of four-way valve of air-cooled air conditioning unit Withdrawn CN111271820A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010141530.3A CN111271820A (en) 2020-03-04 2020-03-04 Method for judging failure of four-way valve of air-cooled air conditioning unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010141530.3A CN111271820A (en) 2020-03-04 2020-03-04 Method for judging failure of four-way valve of air-cooled air conditioning unit

Publications (1)

Publication Number Publication Date
CN111271820A true CN111271820A (en) 2020-06-12

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112611071A (en) * 2021-01-14 2021-04-06 南京天加环境科技有限公司 Improved method for judging failure of four-way valve of air-cooled air conditioning unit
CN112710102A (en) * 2020-12-30 2021-04-27 广东美的制冷设备有限公司 Four-way valve air leakage detection method, storage medium and air conditioner
CN113137706A (en) * 2021-03-12 2021-07-20 青岛海尔空调电子有限公司 Heat pump air conditioning unit and method for judging reversing abnormality of four-way valve of heat pump air conditioning unit
CN113685967A (en) * 2021-09-02 2021-11-23 南京天加环境科技有限公司 Method for accurately judging failure of four-way valve of air-cooled air conditioning unit
CN114046591A (en) * 2021-12-01 2022-02-15 南京天加环境科技有限公司 Control method for household water machine

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CN103104962A (en) * 2013-02-27 2013-05-15 四川长虹空调有限公司 Method for detecting four-way valve of air-conditioner
JP2018096579A (en) * 2016-12-09 2018-06-21 シャープ株式会社 Air conditioner
CN109489177A (en) * 2018-10-16 2019-03-19 珠海格力电器股份有限公司 Air-conditioning processing method, processing unit and air-conditioning
CN109520165A (en) * 2017-09-18 2019-03-26 奥克斯空调股份有限公司 A kind of air-conditioner set and its four-way valve fault detection method
CN109556232A (en) * 2018-10-23 2019-04-02 珠海格力电器股份有限公司 Four-way valve method for detecting abnormality, device and air-conditioner set
CN109631388A (en) * 2019-01-09 2019-04-16 奥克斯空调股份有限公司 A kind of air-conditioning heating four-way valve commutation exception control method, apparatus and air conditioner
CN109990439A (en) * 2019-04-04 2019-07-09 宁波奥克斯电气股份有限公司 A kind of control method, control device and air conditioner that the commutation of air-conditioning four-way valve is abnormal
CN110411057A (en) * 2019-08-14 2019-11-05 珠海格力电器股份有限公司 A kind of monitoring method, monitoring device and the air-conditioning system of four-way valve commutation
CN110715413A (en) * 2019-10-16 2020-01-21 四川虹美智能科技有限公司 Method for detecting running state of four-way valve and air conditioner

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103104962A (en) * 2013-02-27 2013-05-15 四川长虹空调有限公司 Method for detecting four-way valve of air-conditioner
JP2018096579A (en) * 2016-12-09 2018-06-21 シャープ株式会社 Air conditioner
CN109520165A (en) * 2017-09-18 2019-03-26 奥克斯空调股份有限公司 A kind of air-conditioner set and its four-way valve fault detection method
CN109520165B (en) * 2017-09-18 2020-11-06 奥克斯空调股份有限公司 Air conditioning unit and four-way valve fault detection method thereof
CN109489177A (en) * 2018-10-16 2019-03-19 珠海格力电器股份有限公司 Air-conditioning processing method, processing unit and air-conditioning
CN109556232A (en) * 2018-10-23 2019-04-02 珠海格力电器股份有限公司 Four-way valve method for detecting abnormality, device and air-conditioner set
CN109631388A (en) * 2019-01-09 2019-04-16 奥克斯空调股份有限公司 A kind of air-conditioning heating four-way valve commutation exception control method, apparatus and air conditioner
CN109990439A (en) * 2019-04-04 2019-07-09 宁波奥克斯电气股份有限公司 A kind of control method, control device and air conditioner that the commutation of air-conditioning four-way valve is abnormal
CN110411057A (en) * 2019-08-14 2019-11-05 珠海格力电器股份有限公司 A kind of monitoring method, monitoring device and the air-conditioning system of four-way valve commutation
CN110715413A (en) * 2019-10-16 2020-01-21 四川虹美智能科技有限公司 Method for detecting running state of four-way valve and air conditioner

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112710102A (en) * 2020-12-30 2021-04-27 广东美的制冷设备有限公司 Four-way valve air leakage detection method, storage medium and air conditioner
CN112611071A (en) * 2021-01-14 2021-04-06 南京天加环境科技有限公司 Improved method for judging failure of four-way valve of air-cooled air conditioning unit
CN113137706A (en) * 2021-03-12 2021-07-20 青岛海尔空调电子有限公司 Heat pump air conditioning unit and method for judging reversing abnormality of four-way valve of heat pump air conditioning unit
CN113685967A (en) * 2021-09-02 2021-11-23 南京天加环境科技有限公司 Method for accurately judging failure of four-way valve of air-cooled air conditioning unit
CN114046591A (en) * 2021-12-01 2022-02-15 南京天加环境科技有限公司 Control method for household water machine

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Application publication date: 20200612

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