WO2024016834A1 - Procédé et appareil de détection de fuite de boîtier de soupape de climatiseur ayant trois tuyaux pour chauffer et refroidir en même temps et dispositif électronique - Google Patents

Procédé et appareil de détection de fuite de boîtier de soupape de climatiseur ayant trois tuyaux pour chauffer et refroidir en même temps et dispositif électronique Download PDF

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Publication number
WO2024016834A1
WO2024016834A1 PCT/CN2023/096251 CN2023096251W WO2024016834A1 WO 2024016834 A1 WO2024016834 A1 WO 2024016834A1 CN 2023096251 W CN2023096251 W CN 2023096251W WO 2024016834 A1 WO2024016834 A1 WO 2024016834A1
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WIPO (PCT)
Prior art keywords
valve box
low
valve
pressure
temperature
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PCT/CN2023/096251
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English (en)
Chinese (zh)
Inventor
隋志蔚
卢大海
何建奇
远义忠
马进娟
王永爽
王罗莎
Original Assignee
青岛海尔空调电子有限公司
青岛海尔空调器有限总公司
海尔智家股份有限公司
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Application filed by 青岛海尔空调电子有限公司, 青岛海尔空调器有限总公司, 海尔智家股份有限公司 filed Critical 青岛海尔空调电子有限公司
Publication of WO2024016834A1 publication Critical patent/WO2024016834A1/fr

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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
    • F24F11/36—Responding to malfunctions or emergencies to leakage of heat-exchange fluid
    • 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
    • F24F11/84—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 using valves
    • 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
    • F24F2110/50—Air quality properties
    • F24F2110/64—Airborne particle content
    • 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

Definitions

  • This application relates to the technical field of air conditioners, for example, to a method, device, and electronic equipment for detecting valve box leakage of a three-pipe simultaneous heating and cooling air conditioner.
  • the traditional two-pipeline (air pipe, liquid pipe) multi-split unit can only realize the same cooling or heating mode in the indoor unit, while the three-pipeline (high-pressure air pipe, low-pressure air pipe, high-pressure liquid pipe) simultaneous cooling and heating air conditioner has the same outdoor
  • the unit can realize independent cooling or heating modes of the indoor units as needed, that is, some of the indoor units are cooling and the remaining indoor units are heating.
  • the valve box if the valve box leaks refrigerant, the cooling or heating effect of the three-pipe simultaneous heating and cooling air conditioner will be deteriorated. It may also cause the refrigerant to enter the compressor, causing damage to the compressor. damage.
  • Embodiments of the present disclosure provide a method, device, and electronic device for detecting leakage of a valve box of a three-pipe simultaneous heating and cooling air conditioner, which can detect whether refrigerant leakage occurs in the valve box.
  • the outdoor unit of the three-pipe simultaneous heating and cooling air conditioner is connected to the air pipe of the indoor unit through the low-pressure air pipe and the high-pressure air pipe through the valve box, and the valve box is used to switch between high and low pressure refrigerants.
  • the method includes : Obtain the temperature of the low-pressure air pipe in the valve box, and determine whether refrigerant leakage occurs in the valve box based on the temperature of the low-pressure air pipe.
  • the device includes a processor and a memory storing program instructions, and the processor is configured to, when running the program instructions, execute a method for detecting leakage of a valve box of a three-pipe simultaneous heating and cooling air conditioner. method.
  • the electronic device includes the above-mentioned device for detecting valve box leakage of a three-pipe simultaneous heating and cooling air conditioner.
  • the method, device, and electronic equipment for detecting leakage of a valve box of a three-pipe simultaneous heating and cooling air conditioner can achieve the following technical effects: the temperature of the low-pressure air pipe in the valve box can be obtained, and based on the temperature of the low-pressure air pipe, Determine whether refrigerant leakage occurs in the valve box. When refrigerant leaks from the valve box, the temperature of the low-pressure air pipe inside the valve box will change. Therefore, for three-pipeline simultaneous heating and cooling air conditioners, by detecting the temperature changes of the low-pressure air pipes in the valve box, it can be determined whether refrigerant leakage has occurred in the valve box. Effective detection of refrigerant leakage in the valve box is achieved.
  • Figure 1 is a schematic structural diagram of a three-pipe simultaneous heating and cooling air conditioner
  • Figure 2 is a schematic diagram of a method for detecting valve box leakage of a three-pipe simultaneous heating and cooling air conditioner provided by an embodiment of the present disclosure
  • Figure 3 is a schematic diagram of another method for detecting valve box leakage of a three-pipe simultaneous heating and cooling air conditioner provided by an embodiment of the present disclosure
  • Figure 4 is a schematic diagram of another method for detecting valve box leakage of a three-pipe simultaneous heating and cooling air conditioner provided by an embodiment of the present disclosure
  • Figure 5 is a schematic diagram of another method for detecting valve box leakage of a three-pipe simultaneous heating and cooling air conditioner provided by an embodiment of the present disclosure
  • Figure 6 is a schematic diagram of a device for detecting leakage of a valve box of a three-pipe simultaneous heating and cooling air conditioner provided by an embodiment of the present disclosure.
  • A/B means: A or B.
  • a and/or B means: A or B, or A and B.
  • correspondence can refer to an association relationship or a binding relationship.
  • correspondence between A and B refers to an association relationship or a binding relationship between A and B.
  • smart home appliances refer to home appliances that are formed by introducing microprocessors, sensor technology, and network communication technology into home appliances. They have the characteristics of intelligent control, smart perception, and smart applications.
  • the operation process of smart home appliances often Relying on the application and processing of modern technologies such as the Internet of Things, the Internet, and electronic chips, for example, smart home appliances can be connected to electronic devices to enable users to remotely control and manage smart home appliances.
  • the three-pipeline simultaneous heating and cooling air conditioner includes one outdoor unit and multiple indoor units, and each indoor unit has a corresponding valve box.
  • the same outdoor unit of the three-pipe simultaneous heating and cooling air conditioner can realize independent cooling or heating modes of the indoor units according to the needs with the help of the valve boxes corresponding to each indoor unit, that is, some of the indoor units are cooling and the remaining indoor units are heating.
  • the outdoor unit of the three-pipe simultaneous heating and cooling air conditioner is connected to the corresponding indoor unit air pipe through a low-pressure air pipe and a high-pressure air pipe through a valve box.
  • the valve box is used to switch between high and low pressure refrigerants.
  • An indoor unit air pipe temperature sensor is provided on the air pipe of the indoor unit.
  • the outdoor unit is connected to the indoor unit liquid pipe through a high-pressure liquid pipe.
  • a high-pressure valve is provided on the high-pressure air pipe in the valve box, that is, the high-pressure valve is an electronic expansion valve installed on the high-pressure air pipe in the valve box.
  • a low-pressure valve is provided on the low-pressure air pipe in the valve box, that is, the low-pressure valve is an electronic expansion valve installed on the low-pressure air pipe in the valve box.
  • the low-pressure air pipe in the valve box is also provided with a low-pressure air pipe temperature sensor.
  • Figure 1 is a schematic diagram of the structure of a three-pipe simultaneous cooling and heating air conditioner.
  • the three-pipe simultaneous cooling and heating air conditioner in Figure 1 includes one outdoor unit and four indoor units. That is, outdoor unit 1, first valve box 2, first indoor unit 3, second valve box 4, second indoor unit 5, third valve box 6, third indoor unit 7, fourth valve box 8, fourth indoor unit Machine 9.
  • the high-pressure air pipe in the first valve box 2 is provided with a first high-pressure valve 21, and the low-pressure air pipe in the first valve box 2 is provided with a first low-pressure valve 22 and a first low-pressure air pipe temperature sensor 23;
  • a first indoor unit air pipe temperature sensor 10 is provided on the air pipe of the indoor unit.
  • the high-pressure air pipe in the second valve box 4 is provided with a second high-pressure valve 41, and the low-pressure air pipe in the second valve box 4 is provided with a second low-pressure valve 42 and a second low-pressure air pipe temperature sensor 43;
  • a second indoor unit air pipe temperature sensor 11 is provided on the air pipe of the indoor unit.
  • the high-pressure air pipe in the third valve box 6 is provided with a third high-pressure valve 61, and the low-pressure air pipe in the third valve box 6 is provided with a third low-pressure valve 62 and a third low-pressure air pipe temperature sensor 63;
  • a third indoor unit air pipe temperature sensor 12 is provided on the air pipe of the indoor unit.
  • the high-pressure air pipe in the fourth valve box 8 is provided with a fourth high-pressure valve 81, and the low-pressure air pipe in the fourth valve box 8 is provided with a fourth low-pressure valve 82 and a fourth low-pressure air pipe temperature sensor 83; the fourth indoor unit 9
  • a fourth indoor unit air pipe temperature sensor 13 is provided on the air pipe of the indoor unit.
  • the first indoor unit 3 When the first indoor unit 3 is shut down, the first high-pressure valve 21 in the first valve box 2 is closed, and the first low-pressure valve 22 in the first valve box 2 is also closed.
  • the second indoor unit 5 When the second indoor unit 5 performs heating, the second high-pressure valve 41 in the second valve box 4 is opened, and the second low-pressure valve 42 in the second valve box 4 is closed.
  • the third indoor unit 7 When the third indoor unit 7 performs cooling, the third high-pressure valve 61 in the third valve box 6 is closed, and the third low-pressure valve 62 in the third valve box 6 is opened.
  • the fourth indoor unit 9 When the fourth indoor unit 9 performs cooling, the fourth high-pressure valve 81 in the fourth valve box 8 is closed, and the fourth low-pressure valve 82 in the fourth valve box 8 is opened.
  • an embodiment of the present disclosure provides a method for detecting valve box leakage of a three-pipe simultaneous heating and cooling air conditioner, including:
  • Step S201 The electronic device obtains the temperature of the low-pressure air pipe in the valve box.
  • Step S202 The electronic device determines whether refrigerant leakage occurs in the valve box based on the temperature of the low-pressure air pipe in the valve box.
  • the temperature of the low-pressure air pipe in the valve box can be obtained, and based on the temperature of the low-pressure air pipe in the valve box, it can be determined whether refrigerant has occurred in the valve box.
  • the temperature of the low-pressure air pipe inside the valve box will change. Therefore, for a three-pipe simultaneous heating and cooling air conditioner, by detecting the temperature change of the low-pressure air pipe in the valve box, it can be determined whether refrigerant leakage has occurred in the valve box. Effective detection of refrigerant leakage in the valve box is achieved.
  • a high-pressure valve is provided on the high-pressure air pipe in the valve box to obtain the temperature of the low-pressure air pipe in the valve box, including: when the high-pressure valve in the valve box is closed, the electronic device obtains the temperature of the low-pressure air pipe in the valve box. temperature.
  • the refrigerant flows through the low-pressure air pipe in the valve box to achieve indoor unit cooling.
  • the difference between the temperature of the low-pressure air pipe in the valve box and the indoor ambient temperature is less than the first preset temperature.
  • the high-pressure valve in the valve box leaks refrigerant
  • the high-temperature and high-pressure refrigerant in the high-pressure gas pipe in the valve box will leak into the low-pressure gas pipe, causing the temperature of the low-pressure gas pipe to change. Therefore, when the indoor unit is cooling, that is, when the high-pressure valve in the valve box is closed, detecting the temperature of the low-pressure air pipe in the valve box can determine whether the high-pressure valve in the valve box has leaked refrigerant, and thus can detect whether the valve box is leaking. A refrigerant leak has occurred.
  • a low-pressure air pipe temperature sensor is provided on the low-pressure air pipe in the valve box to obtain the temperature of the low-pressure air pipe in the valve box, including: obtaining the temperature of the low-pressure air pipe in the valve box through the low-pressure air pipe temperature sensor.
  • the three-pipeline simultaneous heating and cooling air conditioner determines whether refrigerant leakage occurs in the valve box based on the temperature of the low-pressure air pipe in the valve box, including: obtaining the indoor ambient temperature, and the difference between the temperature of the low-pressure air pipe in the valve box and the indoor ambient temperature. If the value is greater than or equal to the first preset temperature and lasts for the first preset time, it is determined that refrigerant leakage occurs in the valve box. In this way, when the indoor unit is cooling, that is, when the high-pressure valve in the valve box is closed, it is detected that the difference between the temperature of the low-pressure air pipe in the valve box and the indoor ambient temperature is greater than or equal to the first preset temperature, and continues for the first time. After the preset time, it is determined that the high-pressure valve in the valve box has refrigerant leakage, and then it is determined that the valve box has refrigerant leakage.
  • the high-pressure valve in the corresponding valve box when the indoor unit is cooling, the high-pressure valve in the corresponding valve box is in a closed state, and the temperature of the low-pressure air pipe is obtained as Tliqsc1 through the low-pressure air pipe temperature sensor on the low-pressure air pipe in the valve box.
  • the indoor ambient temperature reached is Tai.
  • Tliqsc1 ⁇ Tai+E it is determined that refrigerant leakage occurs in the valve box.
  • E is the first preset temperature.
  • an embodiment of the present disclosure provides a method for detecting valve box leakage of a three-pipe simultaneous heating and cooling air conditioner, including:
  • Step S301 When the high-pressure valve in the valve box is closed, the electronic device obtains the temperature of the low-pressure air pipe in the valve box.
  • Step S302 The electronic device obtains the indoor ambient temperature.
  • Step S303 The electronic device determines that refrigerant leakage occurs in the valve box when the difference between the temperature of the low-pressure air pipe in the valve box and the indoor ambient temperature is greater than or equal to the first preset temperature and lasts for the first preset time.
  • the valve box can be determined by detecting the temperature of the low-pressure air pipe in the valve box and the indoor ambient temperature during the cooling process of the indoor unit. Check whether there is a refrigerant leakage from the high-pressure valve inside. Effective detection of refrigerant leakage in the valve box is achieved.
  • the electronic device determines that refrigerant leakage occurs in the valve box based on the temperature of the low-pressure air pipe in the valve box, including: the electronic device obtains the temperature of the air pipe of the indoor unit.
  • the difference between the temperature of the low-pressure air pipe in the valve box and the temperature of the indoor unit air pipe is greater than or equal to the second preset temperature and lasts for the first preset time, it is determined that refrigerant leakage occurs in the valve box.
  • the refrigerant flows through the low-pressure air pipe in the valve box to achieve indoor unit cooling.
  • the difference between the temperature of the low-pressure air pipe in the valve box and the temperature of the air pipe of the indoor unit is less than the second preset temperature. If the high-pressure valve in the valve box leaks refrigerant, the high-temperature and high-pressure refrigerant will leak into the low-pressure gas pipe, causing the temperature of the low-pressure gas pipe to change. Therefore, when the indoor unit is cooling, that is, when the high-pressure valve in the valve box is closed, detecting the temperature of the low-pressure air pipe in the valve box and the temperature of the indoor unit air pipe can determine whether the high-pressure valve in the valve box has leaked refrigerant, thereby Able to detect whether refrigerant leakage occurs in the valve box.
  • the indoor unit when the indoor unit is cooling, that is, when the high-pressure valve in the valve box is closed, it is detected that the difference between the temperature of the low-pressure air pipe in the valve box and the temperature of the indoor unit air pipe is greater than or equal to the second preset temperature, and continues for the first time. After the preset time, it is determined that the high-pressure valve in the valve box has refrigerant leakage, and then it is determined that the valve box has refrigerant leakage.
  • an indoor unit air pipe temperature sensor is provided on the indoor unit air pipe to obtain the temperature of the indoor unit air pipe, including: obtaining the temperature of the indoor unit air pipe through the indoor unit air pipe temperature sensor.
  • the high-pressure valve in the corresponding valve box when the indoor unit is cooling, the high-pressure valve in the corresponding valve box is in a closed state, and the temperature of the low-pressure air pipe is Tliqsc 1 obtained through the low-pressure air pipe temperature sensor on the low-pressure air pipe in the valve box, The temperature of the indoor unit air pipe is obtained as TCl through the indoor unit air pipe temperature sensor on the indoor unit air pipe. In the case of Tliqsc 1 ⁇ TCl+F, it is determined that refrigerant leakage occurs in the valve box, where F is the second preset temperature.
  • an embodiment of the present disclosure provides another method for detecting valve box leakage of a three-pipe simultaneous heating and cooling air conditioner, including:
  • Step S401 When the high-pressure valve in the valve box is closed, the electronic device obtains the temperature of the low-pressure air pipe in the valve box.
  • Step S402 The electronic device obtains the temperature of the air pipe of the indoor unit.
  • Step S403 The electronic device determines that refrigerant leakage occurs in the valve box when the difference between the temperature of the low-pressure air pipe in the valve box and the temperature of the indoor unit air pipe is greater than or equal to the second preset temperature and lasts for the first preset time.
  • the method for detecting leakage of the valve box of the three-pipe simultaneous heating and cooling air conditioner provided by the embodiment of the present disclosure, it is possible to determine the temperature of the low-pressure air pipe in the valve box and the temperature of the indoor unit air pipe during the cooling process of the indoor unit. Check whether the high-pressure valve in the valve box has refrigerant leakage. Effective detection of refrigerant leakage in the valve box is achieved.
  • a low-pressure valve is provided on the low-pressure air pipe in the valve box, and obtaining the temperature of the low-pressure air pipe in the valve box includes: obtaining the temperature of the low-pressure air pipe in the valve box when the low-pressure valve in the valve box is closed.
  • the refrigerant flows through the high-pressure air pipe in the valve box to achieve indoor heating.
  • the temperature of the low-pressure air pipe in the valve box will become closer and closer to the indoor ambient temperature. After the simultaneous cooling and heating air conditioning of the three pipes is stabilized, the temperature of the low-pressure air pipe in the valve box will be the same as the indoor ambient temperature.
  • the difference in ambient temperature is less than the third preset temperature. If the low-pressure valve in the valve box leaks refrigerant, the high-temperature and high-pressure refrigerant in the valve box will leak into the low-pressure air pipe, causing the temperature of the low-pressure air pipe in the valve box to rise, which may cause the difference between the low-pressure air pipe temperature and the indoor ambient temperature to be greater than Or equal to the third preset temperature. Therefore, when the indoor machine is heating, that is, when the low-pressure valve in the valve box is closed, detecting the temperature of the low-pressure air pipe in the valve box and the indoor ambient temperature can determine whether the low-pressure valve in the valve box has leaked refrigerant, thereby detecting Is there any refrigerant leakage from the valve outlet box?
  • a low-pressure air pipe temperature sensor is provided on the low-pressure air pipe in the valve box to obtain the temperature of the low-pressure air pipe in the valve box, including: obtaining the temperature of the low-pressure air pipe in the valve box through the low-pressure air pipe temperature sensor.
  • the electronic device determines whether refrigerant leakage occurs in the valve box based on the temperature of the low-pressure air pipe in the valve box, including: obtaining the indoor ambient temperature. The difference between the temperature of the low-pressure air pipe in the valve box and the indoor ambient temperature is greater than or equal to When the third preset temperature persists for the first preset time, it is determined that refrigerant leakage occurs in the valve box. In this way, when the indoor machine is heating, that is, when the low-pressure valve in the valve box is closed, it is detected that the difference between the temperature of the low-pressure air pipe in the valve box and the indoor ambient temperature is greater than or equal to the third preset temperature, and continues for the first time. After the preset time, it is determined that the low-pressure valve in the valve box has refrigerant leakage, and then it is determined that the valve box has refrigerant leakage.
  • the low-pressure valve in the corresponding valve box when the indoor unit is heating, the low-pressure valve in the corresponding valve box is in a closed state, and the temperature of the low-pressure air pipe is Tliqsc 2 obtained through the low-pressure air pipe temperature sensor on the low-pressure air pipe in the valve box, The obtained indoor ambient temperature is Tai. Then when Tliqsc 2 ⁇ Tai+G, it is determined that refrigerant leakage occurs in the valve box. Among them, G is the third preset temperature.
  • an embodiment of the present disclosure provides another method for detecting valve box leakage of a three-pipe simultaneous heating and cooling air conditioner, including:
  • Step S501 When the low-pressure valve in the valve box is closed, the electronic device obtains the temperature of the low-pressure air pipe.
  • Step S502 The electronic device obtains the indoor ambient temperature.
  • Step S503 The electronic device determines that the valve box leaks when the difference between the temperature of the low-pressure air pipe in the valve box and the indoor ambient temperature is greater than or equal to the third preset temperature and continues for the first preset time.
  • the valve can be determined by detecting the temperature of the low-pressure air pipe in the valve box and the temperature of the indoor environment during the heating process of the indoor machine. Check whether the low-pressure valve in the box has refrigerant leakage. Effective detection of refrigerant leakage in the valve box is achieved.
  • the electronic device determines that the valve box leaks, it further includes: controlling the high-pressure valve in the valve box to reset according to a preset first reset operation.
  • the first reset operation includes a preset number of reset adjustments.
  • the high-pressure valve in the valve box can be reset in a timely manner.
  • the first reset operation includes: within the second preset time, first control the high-pressure valve in the valve box to perform the first reset adjustment; if the valve box is still in the refrigerant leakage state after the first reset adjustment, then Perform the second reset adjustment; if the valve box does not leak refrigerant after the first reset adjustment, stop the reset operation; if the valve box is still leaking refrigerant after the second reset adjustment, perform the third reset operation.
  • Reset adjustment if there is no refrigerant leakage from the valve box after the second reset adjustment, stop the reset operation.
  • the electronic device Since the number of resets of the high-pressure valve in the valve box is limited, the electronic device performs corresponding reset adjustments based on the refrigerant leakage of the high-pressure valve in the valve box, instead of performing the same number of resets regardless of the leakage of the high-pressure valve in the valve box. Reset, thereby extending the service life of the high-pressure valve in the valve box.
  • the first reset adjustment includes: first opening the high-pressure valve in the control valve box for a first preset number of steps, and then closing for a second preset number of steps.
  • the second reset adjustment includes: the high-pressure valve in the control valve box first opens the first preset number of steps, and then closes the third preset number of steps.
  • the third reset adjustment includes: the high-pressure valve in the control valve box first opens the first preset number of steps, and then closes the fourth preset number of steps.
  • the second preset step number is less than or equal to the third preset step number
  • the third preset step number is less than or equal to the fourth preset step number.
  • the high-pressure valve in the valve box When the high-pressure valve in the valve box performs the first reset operation, as the number of reset adjustments of the high-pressure valve in the valve box increases, the number of steps to close the high-pressure valve also gradually increases. In this way, the high-pressure valve in the valve box When the valve is in a serious refrigerant leakage state, the success rate of repairing the high-pressure valve can be improved by gradually increasing the number of steps to close the high-pressure valve in the valve box.
  • the electronic device determines that refrigerant leakage occurs in the valve box, it further includes: controlling the low-pressure valve in the valve box to reset according to a preset second reset operation.
  • the second reset operation includes a preset number of reset adjustments.
  • the low-pressure valve in the valve box can be reset in time. , avoiding the leakage of refrigerant from the low-pressure valve in the valve box, affecting the heating effect of the three-pipeline simultaneous heating and cooling air conditioner, and even causing damage to the compressor, so that the three-pipeline simultaneous heating and cooling air conditioner can operate normally.
  • the electronic device Since the number of resets of the low-pressure valve in the valve box is limited, the electronic device performs corresponding reset adjustments based on the refrigerant leakage of the low-pressure valve in the valve box, instead of performing the same number of resets regardless of the leakage of the low-pressure valve in the valve box. Reset, thereby extending the service life of the low-pressure valve in the valve box.
  • the first reset adjustment includes: the low-pressure valve in the control valve box first opens the first preset number of steps, and then closes the fifth preset number of steps.
  • the second reset adjustment includes: the low-pressure valve in the control valve box first opens the first preset number of steps, and then closes the sixth preset number of steps.
  • the third reset adjustment includes: the low-pressure valve in the control valve box first opens the first preset number of steps, and then closes the seventh preset number of steps.
  • the fifth preset number of steps is less than or equal to the sixth preset number
  • the sixth preset number is less than or equal to the seventh preset number.
  • the low-pressure valve in the valve box performs the second reset operation
  • the number of reset adjustments of the low-pressure valve in the valve box increases
  • the number of steps to close the low-pressure valve also gradually increases. In this way, the low pressure in the valve box
  • the success rate of repairing the low-pressure valve can be improved by gradually increasing the number of steps to close the low-pressure valve in the valve box.
  • the second preset number of steps may be the same as the fifth preset number of steps, or may be different from the fifth preset number of steps.
  • the third preset number of steps may be the same as the sixth preset number of steps, or may be different from the sixth preset number of steps.
  • the fourth preset step number may be the same as the seventh preset step number, or may be different from the seventh preset step number.
  • ⁇ 1 ⁇ ⁇ 2 ⁇ ⁇ 3 , and ⁇ , ⁇ 1 , ⁇ 2 , ⁇ 3 , ⁇ 1 , ⁇ 2 , and ⁇ 3 are all positive integers.
  • a first reset operation is performed on the high-pressure valve within a second preset time, such as 8 hours, that is, a maximum of 3 reset adjustments are performed.
  • the high-pressure valve in the valve box When the high-pressure valve in the valve box has a slight refrigerant leakage, it only needs to be reset and adjusted once to repair the high-pressure valve in the valve box.
  • the high-pressure valve in the valve box When the high-pressure valve in the valve box is in a serious refrigerant leakage state, the high-pressure valve in the valve box needs to be reset and adjusted twice to repair the high-pressure valve in the valve box.
  • the high-pressure valve in the valve box In the normal state, the high-pressure valve in the valve box needs to be reset and adjusted three times to repair the high-pressure valve in the valve box.
  • eta 1 ⁇ eta 2 ⁇ eta 3 , and ⁇ , ⁇ 1 , ⁇ 2 , ⁇ 3 , eta 1 , eta 2 and eta 3 are all positive integers.
  • a second reset operation is performed on the low-pressure valve within a second preset time, for example, within 8 hours, that is, a maximum of three reset adjustments are performed.
  • the low-pressure valve in the valve box When the low-pressure valve in the valve box has a slight refrigerant leakage, it only needs to be reset and adjusted once to repair the low-pressure valve in the valve box.
  • the low-pressure valve in the valve box When the low-pressure valve in the valve box is in a serious refrigerant leakage state, the low-pressure valve in the valve box needs to be reset and adjusted twice to repair the low-pressure valve in the valve box.
  • the low-pressure valve in the valve box In a serious refrigerant leakage state. In the normal state, the low-pressure valve in the valve box needs to be reset and adjusted three times to repair the low-pressure valve in the valve box. Since the number of resets of the low-pressure valve in the valve box is limited, the electronic equipment depends on the refrigerant of the low-pressure valve in the valve box.
  • the low-pressure valve in the valve box can be repaired without resetting and adjusting it three times, thereby prolonging the life of the valve box. The service life of the low pressure valve.
  • an embodiment of the present disclosure provides a device 100 for detecting valve box leakage of a three-pipe simultaneous heating and cooling air conditioner, including a processor 14 and a memory 15 .
  • the device 100 may also include a communication interface (Communication Interface) 16 and a bus 17.
  • the processor 14, the communication interface 16, and the memory 15 can communicate with each other through the bus 17.
  • Communication interface 16 may be used for information transmission.
  • the processor 14 can call logical instructions in the memory 15 to execute the method for detecting leakage of the valve box of the three-pipe simultaneous heating and cooling air conditioner in the above embodiment.
  • the above-mentioned logical instructions in the memory 15 can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product.
  • the memory 15 can be used to store software programs, computer executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure.
  • the processor 14 executes program instructions/modules stored in the memory 15 to execute functional applications and data processing, that is, to implement the method for detecting valve box leakage of a three-pipe simultaneous heating and cooling air conditioner in the above embodiment.
  • the memory 15 may include a program storage area and a data storage area, where the program storage area may store an operating system and an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, etc.
  • the memory 15 may include high-speed random access memory, and may also include non-volatile memory.
  • An embodiment of the present disclosure provides an electronic device, including the above-mentioned device for detecting leakage of a valve box of a three-pipe simultaneous heating and cooling air conditioner.
  • the electronic equipment includes a three-pipe simultaneous heating and cooling air conditioner, computer or server, etc.
  • An embodiment of the present disclosure provides a computer program that, when executed by a computer, causes the computer to implement the above device for detecting leakage of a valve box of a three-pipe simultaneous heating and cooling air conditioner.
  • Embodiments of the present disclosure provide a computer program product.
  • the computer program product includes computer instructions stored on a computer-readable storage medium.
  • the program instructions When executed by a computer, the computer implements the above-mentioned detection of three The valve box of the heating and cooling air conditioner is leaking in the pipeline.
  • the term “and/or” as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed items.
  • the term “comprise” and its variations “comprises” and/or “comprising” etc. refer to stated features, integers, steps, operations, elements, and/or The presence of a component does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groupings of these.
  • an element defined by the statement “comprises a" does not exclude the presence of additional identical elements in a process, method or apparatus including the stated element.
  • each embodiment may focus on its differences from other embodiments, and the same and similar parts among various embodiments may be referred to each other.
  • the relevant parts can be referred to the description of the method part.
  • each block in the flowchart or block diagrams may represent a module, segment, or portion of code that contains one or more components for implementing the specified logical function(s).
  • Executable instructions may occur out of the order noted in the figures. For example, two consecutive blocks may actually execute substantially in parallel, or they may sometimes execute in the reverse order, depending on the functionality involved.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

La présente demande se rapporte au domaine technique des climatiseurs. Est divulgué un procédé de détection de fuite d'un boîtier de soupape d'un climatiseur ayant trois tuyaux pour le chauffage et le refroidissement en même temps, comprenant les étapes consistant à : acquérir une température d'un tuyau d'air à basse pression dans le boîtier de soupape et, en fonction de la température du tuyau d'air à basse pression, déterminer si une fuite de fluide frigorigène se produit dans le boîtier de soupape. Lorsqu'une fuite de fluide frigorigène se produit dans le boîtier de soupape, la température du tuyau d'air à basse pression dans le boîtier de soupape sera modifiée. Par conséquent, pour le climatiseur ayant trois tuyaux pour le chauffage et le refroidissement en même temps, en détectant un changement de température du tuyau d'air basse pression dans le boîtier de soupape, il peut être déterminé si une fuite de fluide frigorigène se produit dans le boîtier de soupape, ce qui permet d'obtenir une détection efficace de fuite de fluide frigorigène dans le boîtier de soupape. Est en outre divulgué, dans la présente demande, un appareil pour détecter une fuite d'un boîtier de soupape d'un climatiseur ayant trois tuyaux pour le chauffage et le refroidissement en même temps, ainsi qu'un dispositif électronique.
PCT/CN2023/096251 2022-07-18 2023-05-25 Procédé et appareil de détection de fuite de boîtier de soupape de climatiseur ayant trois tuyaux pour chauffer et refroidir en même temps et dispositif électronique WO2024016834A1 (fr)

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CN202210840552.8A CN117450622A (zh) 2022-07-18 2022-07-18 检测三管路同时冷暖空调的阀盒泄露的方法及装置、电子设备

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