CN117450622A - Method and device for detecting valve box leakage of three-pipeline simultaneous cooling and heating air conditioner and electronic equipment - Google Patents
Method and device for detecting valve box leakage of three-pipeline simultaneous cooling and heating air conditioner and electronic equipment Download PDFInfo
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- CN117450622A CN117450622A CN202210840552.8A CN202210840552A CN117450622A CN 117450622 A CN117450622 A CN 117450622A CN 202210840552 A CN202210840552 A CN 202210840552A CN 117450622 A CN117450622 A CN 117450622A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 52
- 238000001816 cooling Methods 0.000 title claims abstract description 51
- 239000003507 refrigerant Substances 0.000 claims abstract description 93
- 210000003437 trachea Anatomy 0.000 claims description 4
- 238000001514 detection method Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 12
- 230000006870 function Effects 0.000 description 6
- 238000004891 communication Methods 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004590 computer program Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/36—Responding to malfunctions or emergencies to leakage of heat-exchange fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- 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
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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
The application relates to the technical field of air conditioners, and discloses a method for detecting valve box leakage of a three-pipeline simultaneous cooling and heating air conditioner, which comprises the following steps: acquiring the temperature of a low-pressure air pipe in the valve box, and determining whether the valve box leaks refrigerant according to the temperature of the low-pressure air pipe. When the valve box leaks the refrigerant, the temperature of the low-pressure air pipe inside the valve box changes. Therefore, for the three-pipeline simultaneous cooling and heating air conditioner, whether the valve box leaks the refrigerant can be determined by detecting the temperature change of the low-pressure air pipe in the valve box. The effective detection of refrigerant leakage in the valve box is realized. The application also discloses a device and electronic equipment for detecting valve box leakage of three-pipeline simultaneous cooling and heating air conditioner.
Description
Technical Field
The application relates to the technical field of air conditioners, in particular to a method and a device for detecting valve box leakage of a three-pipeline simultaneous cooling and heating air conditioner and electronic equipment.
Background
The traditional two-pipeline (air pipe and liquid pipe) multi-split air conditioner can only realize the same mode of refrigeration or heating by the inner machine, and the three-pipeline (high-pressure air pipe, low-pressure air pipe and high-pressure liquid pipe) is used for simultaneously cooling and heating the air conditioner, and the same outdoor machine can realize the independent refrigeration or heating modes of the indoor machines by means of valve boxes corresponding to the indoor machines as required, namely, one part of the indoor machines refrigerates and the other indoor machines heat. In the process of the three-pipeline simultaneous cooling and heating air conditioner, if the valve box leaks the refrigerant, the effect of the three-pipeline simultaneous cooling and heating air conditioner on refrigerating or heating is poor, and meanwhile, the refrigerant can possibly enter the compressor, so that the compressor is damaged. In the related art, no effective detection scheme for the refrigerant leakage of the valve box exists.
Disclosure of Invention
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.
The embodiment of the disclosure provides a method and a device for detecting valve box leakage of a three-pipeline simultaneous cooling and heating air conditioner, and electronic equipment, and can detect whether the valve box leaks refrigerant or not.
In some embodiments, the outdoor unit of the three-pipe simultaneous cooling and heating air conditioner is connected to the indoor unit air pipe through the valve box by a low-pressure air pipe and a high-pressure air pipe, and the valve box is used for realizing switching of high-pressure refrigerant and low-pressure refrigerant, and the method comprises: acquiring the temperature of a low-pressure air pipe in the valve box, and determining whether the valve box leaks refrigerant according to the temperature of the low-pressure air pipe.
In some embodiments, the apparatus includes a processor and a memory storing program instructions configured to perform a method for detecting a valve box leak of a three-way simultaneous cooling and heating air conditioner when the program instructions are executed.
In some embodiments, the electronic device comprises the device for detecting the leakage of the valve box of the three-pipeline simultaneous cooling and heating air conditioner.
The method and the device for detecting the valve box leakage of the three-pipeline simultaneous cooling and heating air conditioner and the electronic equipment provided by the embodiment of the disclosure can realize the following technical effects: the temperature of the low-pressure air pipe in the valve box can be obtained, and whether the valve box leaks refrigerant or not is determined according to the temperature of the low-pressure air pipe. When the valve box leaks the refrigerant, the temperature of the low-pressure air pipe inside the valve box changes. Therefore, for the three-pipeline simultaneous cooling and heating air conditioner, whether the valve box leaks the refrigerant can be determined by detecting the temperature change of the low-pressure air pipe in the valve box. The effective detection of refrigerant leakage in the valve box is realized.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:
FIG. 1 is a schematic diagram of a three-pipe simultaneous cooling and heating air conditioner;
FIG. 2 is a schematic diagram of a method for detecting a valve box leak of a three-pipe simultaneous cooling and heating air conditioner according to an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of another method for detecting a valve box leak of a three-pipe simultaneous cooling and heating air conditioner provided in an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of another method for detecting a valve box leak of a three-pipe simultaneous cooling and heating air conditioner provided in an embodiment of the present disclosure;
FIG. 5 is a schematic diagram of another method for detecting a valve box leak of a three-pipe simultaneous cooling and heating air conditioner provided in an embodiment of the present disclosure;
fig. 6 is a schematic diagram of an apparatus for detecting leakage of a valve box of a three-pipe simultaneous cooling and heating air conditioner according to an embodiment of the present disclosure.
Detailed Description
So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.
The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.
The term "plurality" means two or more, unless otherwise indicated.
In the embodiment of the present disclosure, the character "/" indicates that the front and rear objects are an or relationship. For example, A/B represents: a or B.
The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.
The term "corresponding" may refer to an association or binding relationship, and the correspondence between a and B refers to an association or binding relationship between a and B.
In the embodiment of the disclosure, the intelligent home appliance refers to a home appliance formed after a microprocessor, a sensor technology and a network communication technology are introduced into the home appliance, and has the characteristics of intelligent control, intelligent sensing and intelligent application, the operation process of the intelligent home appliance often depends on the application and processing of modern technologies such as the internet of things, the internet and an electronic chip, for example, the intelligent home appliance can realize remote control and management of a user on the intelligent home appliance by connecting the electronic appliance.
In the embodiment of the disclosure, the three-pipeline simultaneous cooling and heating air conditioner comprises an outdoor unit and a plurality of indoor units, and each indoor unit is provided with a corresponding valve box. The same outdoor unit of the three-pipeline simultaneous cooling and heating air conditioner can realize independent refrigeration or heating modes of the indoor units according to the needs by means of valve boxes corresponding to the indoor units, namely, one part of the indoor units refrigerates and the other indoor units heat. The outdoor unit of the three-pipeline simultaneous cooling and heating air conditioner is connected with the corresponding indoor unit air pipe through the low-pressure air pipe and the high-pressure air pipe through the valve box, and the valve box is used for realizing the switching of high-pressure refrigerant and low-pressure refrigerant. An indoor machine air pipe temperature sensor is arranged on the indoor machine air pipe. The outdoor unit is connected with the indoor unit through a high-pressure liquid pipe. The high-pressure air pipe in the valve box is provided with a high-pressure valve, namely the high-pressure valve is an electronic expansion valve arranged on the high-pressure air pipe in the valve box. The low-pressure air pipe in the valve box is provided with a low-pressure valve, namely the low-pressure valve is an electronic expansion valve arranged 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.
Referring to fig. 1, fig. 1 is a schematic diagram of a structure of a three-pipe simultaneous cooling and heating air conditioner, and the three-pipe simultaneous cooling and heating air conditioner in fig. 1 includes an outdoor unit and four indoor units. Namely, the outdoor unit 1, the first valve box 2, the first indoor unit 3, the second valve box 4, the second indoor unit 5, the third valve box 6, the third indoor unit 7, the fourth valve box 8, and the fourth indoor unit 9. A first high-pressure valve 21 is arranged on a high-pressure air pipe in the first valve box 2, and a first low-pressure valve 22 and a first low-pressure air pipe temperature sensor 23 are arranged on a low-pressure air pipe in the first valve box 2; the indoor unit air pipe of the first indoor unit 3 is provided with a first indoor unit air pipe temperature sensor 10. A second high-pressure valve 41 is arranged on the high-pressure air pipe in the second valve box 4, and a second low-pressure valve 42 and a second low-pressure air pipe temperature sensor 43 are arranged on the low-pressure air pipe in the second valve box 4; the indoor unit air pipe of the second indoor unit 5 is provided with a second indoor unit air pipe temperature sensor 11. A third high-pressure valve 61 is arranged on the high-pressure air pipe in the third valve box 6, and a third low-pressure valve 62 and a third low-pressure air pipe temperature sensor 63 are arranged on the low-pressure air pipe in the third valve box 6; the indoor unit air pipe of the third indoor unit 7 is provided with a third indoor unit air pipe temperature sensor 12. A fourth high-pressure valve 81 is arranged on the high-pressure air pipe in the fourth valve box 8, and a fourth low-pressure valve 82 and a fourth low-pressure air pipe temperature sensor 83 are arranged on the low-pressure air pipe in the fourth valve box 8; the fourth indoor unit 9 is provided with a fourth indoor unit air pipe temperature sensor 13.
When the first indoor unit 3 is stopped, 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. When the second indoor unit 5 heats, 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. When the third indoor unit 7 performs cooling, the third high-pressure valve 61 in the third valve casing 6 is closed, and the third low-pressure valve 62 in the third valve casing 6 is opened. When the fourth indoor unit 9 is 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.
Referring to fig. 2, an embodiment of the present disclosure provides a method for detecting a valve box leakage of a three-pipe simultaneous cooling and heating air conditioner, including:
in step S201, the electronic device acquires the temperature of the low-pressure gas pipe in the valve box.
In step S202, the electronic device determines whether the valve box leaks refrigerant according to the temperature of the low-pressure air pipe in the valve box.
By adopting the method for detecting the leakage of the valve box of the three-pipeline simultaneous cooling and heating air conditioner, which is provided by the embodiment of the disclosure, the temperature of the low-pressure air pipe in the valve box can be obtained, and whether the valve box leaks refrigerant or not is determined according to the temperature of the low-pressure air pipe in the valve box. When the valve box leaks the refrigerant, the temperature of the low-pressure air pipe inside the valve box changes. Therefore, for the three-pipeline simultaneous cooling and heating air conditioner, whether the valve box leaks the refrigerant can be determined by detecting the temperature change of the low-pressure air pipe in the valve box. The effective detection of refrigerant leakage in the valve box is realized.
Optionally, a high-pressure valve is disposed on a high-pressure air pipe in the valve box, and acquiring the temperature of the low-pressure air pipe in the valve box includes: the electronic device acquires the temperature of the low-pressure gas pipe in the valve box when the high-pressure valve in the valve box is closed. And the high-pressure valve on the high-pressure air pipe in the valve box is closed, so that the refrigerant flows through the low-pressure air pipe in the valve box, and the indoor unit refrigeration is realized. And in the process of refrigerating the indoor unit, under normal conditions, the difference between the temperature of the low-pressure air pipe in the valve box and the indoor environment temperature is smaller than the first preset temperature. If the high-pressure valve in the valve box leaks the refrigerant, the high-temperature and high-pressure refrigerant in the high-pressure air pipe in the valve box leaks to the low-pressure air pipe, so that the temperature of the low-pressure air pipe is changed. Therefore, when the indoor unit is refrigerating, that is, when the high-pressure valve in the valve box is closed, the temperature of the low-pressure air pipe in the valve box is detected, whether the refrigerant leakage occurs in the high-pressure valve in the valve box can be determined, and whether the refrigerant leakage occurs in the valve box can be detected.
Further, be provided with low pressure gas pipe temperature sensor on the low pressure gas pipe in the valve box, acquire the temperature of the low pressure gas pipe in the valve box, include: the temperature of the low-pressure air pipe in the valve box is obtained through a low-pressure air pipe temperature sensor.
Optionally, the three-pipeline simultaneous cooling and heating air conditioner determines whether the valve box leaks refrigerant according to the temperature of a low-pressure air pipe in the valve box, and comprises: acquiring indoor environment temperature, and determining that the valve box is leaked by refrigerant under the condition that the difference value between the temperature of the low-pressure air pipe in the valve box and the indoor environment temperature is larger than or equal to a first preset temperature and the first preset time is continuous. Thus, when the indoor unit is used for refrigerating, namely the high-pressure valve in the valve box is closed, the difference value between the temperature of the low-pressure air pipe in the valve box and the indoor environment temperature is detected to be larger than or equal to the first preset temperature, and the first preset time is continued, the high-pressure valve in the valve box is determined to be leaked by the refrigerant, and the valve box is determined to be leaked by the refrigerant.
In some embodiments, when the indoor unit is refrigerating, 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 obtained by the low-pressure air pipe temperature sensor on the low-pressure air pipe in the valve box 1 The acquired indoor environment temperature is Tai. Then at Tliqsc 1 And if the coolant leakage is not less than Tai+E, determining that the valve box leaks coolant. Wherein E is a first preset temperature.
Referring to fig. 3, an embodiment of the present disclosure provides a method for detecting a valve box leakage of a three-pipe simultaneous cooling and heating air conditioner, including:
in step S301, the electronic device acquires the temperature of the low-pressure gas pipe in the valve box when the high-pressure valve in the valve box is closed.
In step S302, the electronic device obtains an indoor ambient temperature.
In step S303, the electronic device determines that the valve box leaks refrigerant when the difference between the temperature of the low-pressure air pipe in the valve box and the indoor environment temperature is greater than or equal to the first preset temperature and the first preset time is continued.
By adopting the method for detecting the leakage of the valve box of the three-pipeline simultaneous cooling and heating air conditioner, which is provided by the embodiment of the disclosure, whether the refrigerant leakage occurs to the high-pressure valve in the valve box can be determined by detecting the temperature of the low-pressure air pipe in the valve box and the indoor environment temperature in the refrigerating process of the indoor unit. The effective detection of refrigerant leakage in the valve box is realized.
Optionally, the electronic device determines that the valve box leaks refrigerant according to the temperature of the low-pressure air pipe in the valve box, including: the electronic equipment acquires the temperature of the air pipe of the indoor unit. And determining that the valve box is leaked under the condition 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 larger than or equal to the second preset temperature and the first preset time is continuous. And the high-pressure valve on the high-pressure air pipe in the valve box is closed, so that the refrigerant flows through the low-pressure air pipe in the valve box, and the indoor unit refrigeration is realized. And in the refrigerating process of the indoor unit, under normal conditions, 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 smaller than the second preset temperature. If the high-pressure valve in the valve box leaks the refrigerant, the high-temperature and high-pressure refrigerant can leak to the low-pressure air pipe, so that the temperature of the low-pressure air pipe is changed. Therefore, when the indoor unit is refrigerating, namely the high-pressure valve in the valve box is closed, the temperature of the low-pressure air pipe in the valve box and the temperature of the air pipe of the indoor unit are detected, whether the refrigerant leakage occurs in the high-pressure valve in the valve box can be determined, and whether the refrigerant leakage occurs in the valve box can be detected. Thus, under the condition that the indoor unit refrigerates, namely the high-pressure valve in the valve box is closed, the difference value 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 detected to be larger than or equal to the second preset temperature, and the first preset time is continued, the high-pressure valve in the valve box is determined to be leaked by the refrigerant, and the valve box is determined to be leaked by the refrigerant.
Further, be provided with interior quick-witted trachea temperature sensor on the indoor set trachea, acquire the temperature of indoor set trachea, include: and acquiring the temperature of the air pipe of the indoor unit through an air pipe temperature sensor of the indoor unit.
In some embodiments, when the indoor unit is refrigerating, 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 obtained by the low-pressure air pipe temperature sensor on the low-pressure air pipe in the valve box 1 The temperature of the indoor machine air pipe is TCl through an indoor machine air pipe temperature sensor on the indoor machine air pipe. At Tliqsc 1 And if the temperature is not less than TCl+F, determining that the valve box leaks the refrigerant, wherein F is a second preset temperature.
Referring to fig. 4, another method for detecting a leakage of a valve box of a three-pipe simultaneous cooling and heating air conditioner according to an embodiment of the present disclosure includes:
in step S401, the electronic device acquires the temperature of the low-pressure gas pipe in the valve box when the high-pressure valve in the valve box is closed.
In step S402, the electronic device obtains the temperature of the air pipe of the indoor unit.
In step S403, the electronic device determines that the valve box leaks refrigerant when 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 greater than or equal to the second preset temperature and the first preset time is continued.
By adopting the method for detecting the leakage of the valve box of the three-pipeline simultaneous cooling and heating air conditioner, which is provided by the embodiment of the disclosure, whether the refrigerant leakage occurs to the high-pressure valve in the valve box can be determined by detecting the temperature of the low-pressure air pipe in the valve box and the temperature of the air pipe of the indoor unit in the refrigerating process of the indoor unit. The effective detection of refrigerant leakage in the valve box is realized.
Optionally, a low pressure valve is disposed on a low pressure air pipe in the valve box, and acquiring the temperature of the low pressure air pipe in the valve box includes: when the low pressure valve in the valve box is closed, the temperature of the low pressure gas pipe in the valve box is acquired. By closing the low-pressure valve on the low-pressure air pipe in the valve box, the refrigerant flows through the high-pressure air pipe in the valve box, so that indoor heating is realized. In the indoor heating process, the temperature of the low-pressure air pipe in the valve box is more and more close to the indoor environment temperature under normal conditions, and after the three pipelines stabilize the cold and warm air conditioner at the same time, the difference between the temperature of the low-pressure air pipe in the valve box and the indoor environment temperature is smaller than the third preset temperature. If the refrigerant leaks from the low-pressure valve in the valve box, the refrigerant with high temperature and high pressure in the valve box leaks into the low-pressure air pipe, so that the temperature of the low-pressure air pipe in the valve box is increased, and the difference between the temperature of the low-pressure air pipe and the indoor environment temperature is possibly larger than or equal to a third preset temperature. Therefore, under the condition that the indoor machine heats, namely the low-pressure valve in the valve box is closed, the temperature of the low-pressure air pipe in the valve box and the indoor environment temperature are detected, whether the refrigerant leakage occurs in the low-pressure valve in the valve box can be determined, and whether the refrigerant leakage occurs in the valve box can be detected.
Further, be provided with low pressure gas pipe temperature sensor on the low pressure gas pipe in the valve box, acquire the temperature of the low pressure gas pipe in the valve box, include: the temperature of the low-pressure air pipe in the valve box is obtained through a low-pressure air pipe temperature sensor.
Optionally, the electronic device determines whether the valve box leaks refrigerant according to the temperature of the low-pressure air pipe in the valve box, including: acquiring indoor environment temperature, and determining that the valve box is leaked by the refrigerant under the condition that the difference value between the temperature of the low-pressure air pipe in the valve box and the indoor environment temperature is larger than or equal to a third preset temperature and the first preset time is continuous. Thus, when indoor heating is performed, namely, the low-pressure valve in the valve box is closed, the difference between the temperature of the low-pressure air pipe in the valve box and the indoor environment temperature is detected to be larger than or equal to a third preset temperature, and the first preset time is continued, the fact that the refrigerant leaks from the low-pressure valve in the valve box is determined, and then the fact that the refrigerant leaks from the valve box is determined.
In some embodiments, when the indoor unit heats, 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 obtained by the low pressure air pipe temperature sensor on the low pressure air pipe in the valve box 2 The acquired indoor environment temperature is Tai. Then at Tliqsc 2 And if the temperature is more than or equal to Tai+G, determining that the valve box leaks the refrigerant. Wherein G is a third preset temperature.
Referring to fig. 5, another method for detecting a leakage of a valve box of a three-pipe simultaneous cooling and heating air conditioner according to an embodiment of the present disclosure includes:
in step S501, the electronic apparatus obtains the temperature of the low-pressure gas pipe when the low-pressure valve in the valve box is closed.
In step S502, the electronic device obtains an indoor ambient temperature.
In 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 environment temperature is greater than or equal to the third preset temperature and the first preset time is continued.
By adopting the method for detecting the leakage of the valve box of the three-pipeline simultaneous cooling and heating air conditioner, whether the refrigerant leakage occurs to the low-pressure valve in the valve box can be determined by detecting the temperature of the low-pressure air pipe in the valve box and the temperature of the indoor environment in the indoor machine heating process. The effective detection of refrigerant leakage in the valve box is realized.
Optionally, after the electronic device determines that the valve box leaks, the method further includes: and according to a preset first resetting operation, controlling the high-pressure valve in the valve box to reset. The first reset operation comprises reset adjustment of preset times, when the valve box is detected to be in a leakage state, the high-pressure valve in the valve box can be reset timely through reset adjustment of preset times, the high-pressure valve in the valve box is prevented from being leaked due to high-pressure valve refrigerants in the valve box, the refrigerating effect of the three-pipeline simultaneous cooling and heating air conditioner is influenced, and even the compressor is damaged, so that the three-pipeline simultaneous cooling and heating air conditioner can normally operate.
Further, the first reset operation includes: in a second preset time, firstly controlling a high-pressure valve in the valve box to carry out first resetting adjustment; if the valve box is still in a refrigerant leakage state after the first reset adjustment, performing a second reset adjustment; if the valve box does not leak the refrigerant after the first resetting adjustment, stopping resetting operation; if the valve box is still in the refrigerant leakage state after the second resetting adjustment, the third resetting adjustment is performed; and if the valve box does not leak the refrigerant after the second resetting adjustment, stopping resetting operation. Because the reset times of the high-pressure valve in the valve box are limited, the electronic equipment executes corresponding reset adjustment according to the refrigerant leakage condition of the high-pressure valve in the valve box, and the reset of the same times is not carried out no matter what leakage condition the high-pressure valve in the valve box is, so that the service life of the high-pressure valve in the valve box can be prolonged.
Further, the first reset adjustment includes: the high-pressure valve in the control valve box is firstly opened for a first preset step number, and then closed for a second preset step number.
Further, the second reset adjustment includes: the high-pressure valve in the control valve box is firstly opened for a first preset step number, and then closed for a third preset step number.
Further, the third reset adjustment includes: the high-pressure valve in the control valve box is firstly opened for a first preset step number, and then closed for a fourth preset step number. The second preset number of steps is less than or equal to the third preset number of steps, which is less than or equal to the fourth preset number of steps.
When the high-pressure valve in the valve box is in the first reset operation, the number of steps for closing the high-pressure valve is gradually increased along with the increase of the reset adjustment times of the high-pressure valve in the valve box, so that the success rate of repairing the high-pressure valve can be improved by gradually increasing the number of steps for closing the high-pressure valve in the valve box under the condition that the high-pressure valve in the valve box is in a severe refrigerant leakage state.
Optionally, after the electronic device determines that the valve box leaks the refrigerant, the electronic device further includes: and according to a preset second resetting operation, controlling the low-pressure valve in the valve box to reset. The second reset operation comprises reset adjustment of preset times, when the valve box is detected to be in a leakage state, the low-pressure valve in the valve box can be reset timely through reset adjustment of preset times, the low-pressure valve in the valve box is prevented from being leaked due to low-pressure valve refrigerants in the valve box, heating effects of the three-pipeline simultaneous cooling and heating air conditioner are affected, and even the compressor is damaged, so that the three-pipeline simultaneous cooling and heating air conditioner can normally operate.
In a second preset time, firstly controlling a low-pressure valve in the valve box to carry out first resetting adjustment; if the valve box is still in a refrigerant leakage state after the first reset adjustment, performing a second reset adjustment; if the valve box does not leak the refrigerant after the first resetting adjustment, stopping resetting operation; if the valve box is still in the refrigerant leakage state after the second resetting adjustment, the third resetting adjustment is performed; and if the valve box does not leak the refrigerant after the second resetting adjustment, stopping resetting operation. Because the reset times of the low-pressure valve in the valve box are limited, the electronic equipment executes corresponding reset adjustment according to the refrigerant leakage condition of the low-pressure valve in the valve box, and the reset of the same times is not carried out no matter what leakage condition the low-pressure valve in the valve box is, so that the service life of the low-pressure valve in the valve box can be prolonged.
Further, the first reset adjustment includes: the low pressure valve in the control valve box is opened for a first preset step number, and then closed for a fifth preset step number.
Further, the second reset adjustment includes: the low pressure valve in the control valve box is opened for a first preset step number, and then closed for a sixth preset step number.
Further, the third reset adjustment includes: the low pressure valve in the control valve box is opened for a first preset step number, and then closed for a seventh preset step number. The fifth preset number of steps is less than or equal to the sixth preset number of steps, which is less than or equal to the seventh preset number of steps.
When the low pressure valve in the valve box is in the second reset operation, the number of steps for closing the low pressure valve is gradually increased along with the increase of the reset adjustment times of the low pressure valve in the valve box, so that the success rate of repairing the low pressure valve can be improved by gradually increasing the number of steps for closing the low pressure valve in the valve box under the condition that the low pressure valve in the valve box is in a serious refrigerant leakage state.
Alternatively, 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 or different from the sixth preset number of steps. The fourth preset number of steps may be the same as the seventh preset number of steps or may be different from the seventh preset number of steps.
In some examples, after detecting the leakage of the refrigerant from the high-pressure valve in the valve box, the high-pressure valve in the valve box is controlled to perform the first reset adjustment, i.e. the valve is opened by alpha pls (step) and then closed by theta 1 pls，θ 1 ＝α+λ 1 +β 1 +200pls, wherein α is a first predetermined number of steps, λ 1 Beta is the current opening of the high-pressure valve in the valve box 1 Is a second preset number of steps. If the high-pressure valve in the valve box is still in a leakage state after the first reset adjustment, controlling the high-pressure valve to open alpha pls again, and then closing theta 2 pls，θ 2 ＝α+λ 2 +β 2 +200pls, wherein λ 2 For the opening degree beta of the high-pressure valve after the first reset adjustment 2 The third preset step number. If the high-pressure valve in the valve box is still in a leakage state after the second reset adjustment, controlling the high-pressure valve to open alpha pls again and then closing theta 3 pls，θ 3 ＝α+λ 3 +β 3 +200pls, wherein λ 3 For the opening degree beta of the high-pressure valve after the second reset adjustment 3 The number of steps is a fourth preset number. Wherein beta is 1 ≤β 2 ≤β 3 And alpha, lambda 1 、λ 2 、λ 3 、β 1 、β 2 、β 3 Are all positive integers. The high pressure valve is subjected to a first reset operation, i.e. at most 3 reset adjustments, for a second preset time, e.g. 8 hours.
Under the condition that the high-pressure valve in the valve box is in a slight refrigerant leakage state, the high-pressure valve in the valve box can be repaired by carrying out 1-time reset adjustment on the high-pressure valve in the valve box. Under the condition that the high-pressure valve in the valve box is in a severe refrigerant leakage state, the high-pressure valve in the valve box can be repaired by carrying out 2 times of reset adjustment on the high-pressure valve in the valve box, under the condition that the high-pressure valve in the valve box is in a severe refrigerant leakage state, the high-pressure valve in the valve box can be repaired by carrying out 3 times of reset adjustment on the high-pressure valve in the valve box, and as the reset times of the high-pressure valve in the valve box are limited, the corresponding reset adjustment is carried out according to the refrigerant leakage condition of the high-pressure valve in the valve box, and under the condition that the high-pressure valve in the valve box is in a slight refrigerant leakage state, the high-pressure valve in the valve box can be repaired without carrying out 3 times of reset adjustment on the high-pressure valve in the valve box, so that the service life of the high-pressure valve in the valve box is prolonged.
In some examples, after detecting a leak in the low pressure valve in the valve box, the low pressure valve in the valve box is controlled to perform a first reset adjustment, i.e., to open alpha pls and then close delta 1 pls，δ 1 ＝α+γ 1 +η 1 +200pls, wherein γ 1 Is the current opening degree eta of the low pressure valve in the valve box 1 The fifth reset step number. If the low pressure valve in the valve box is still in a leakage state after the first reset adjustment, controlling the low pressure valve to open alpha pls and close delta 2 pls，δ 2 ＝α+γ 2 +η 2 +200pls, wherein γ 2 For the opening degree eta of the low-pressure valve after the first reset adjustment 2 The sixth preset number of steps. If the low pressure valve in the valve box is still in a leakage state after the second reset adjustment, the low pressure valve is controlled to be opened alpha pls and then closed delta 3 pls，δ 3 ＝α+γ 3 +η 3 +200pls, wherein γ 3 For the low pressureThe opening degree eta of the valve after the second reset adjustment 3 The number of steps is preset for the seventh step. Wherein eta 1 ≤η 2 ≤η 3 And alpha, gamma 1 、γ 2 、γ 3 、η 1 、η 2 、η 3 Are all positive integers. The low pressure valve is subjected to a second reset operation, i.e. at most 3 reset adjustments, for a second preset time, e.g. 8 hours.
Under the condition that the low-pressure valve in the valve box is in a slight refrigerant leakage state, the low-pressure valve in the valve box can be repaired by carrying out 1-time reset adjustment on the low-pressure valve in the valve box. Under the condition that the low-pressure valve in the valve box is in a severe refrigerant leakage state, the low-pressure valve in the valve box can be repaired by carrying out 2 times of reset adjustment on the low-pressure valve in the valve box, under the condition that the low-pressure valve in the valve box is in a severe refrigerant leakage state, the low-pressure valve in the valve box can be repaired by carrying out 3 times of reset adjustment on the low-pressure valve in the valve box, and because the reset times of the low-pressure valve in the valve box are limited, the electronic equipment executes corresponding reset adjustment according to the refrigerant leakage condition of the low-pressure valve in the valve box, and can repair the low-pressure valve without carrying out 3 times of reset adjustment on the low-pressure valve in the valve box under the condition that the low-pressure valve in the valve box is in a slight refrigerant leakage state, thereby prolonging the service life of the low-pressure valve in the valve box.
Referring to fig. 6, an embodiment of the present disclosure provides an apparatus for detecting a valve box leakage of a three-pipe simultaneous cooling and heating air conditioner, including a processor (processor) 14 and a memory (memory) 15. Optionally, the apparatus may also include a communication interface (Communication Interface) 16 and a bus 17. The processor 14, the communication interface 16, and the memory 15 may communicate with each other via a bus 17. The communication interface 16 may be used for information transfer. The processor 14 may call logic instructions in the memory 15 to perform the method for detecting a valve box leak of the three-pipe simultaneous cooling and heating air conditioner of the above embodiment.
Further, the logic instructions in the memory 15 described above may be implemented in the form of software functional units and may be stored in a computer readable storage medium when sold or used as a stand alone product.
The memory 15 is used as a storage medium for storing a software program, a computer executable program, and program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 14 performs functional applications and data processing by executing program instructions/modules stored in the memory 15, i.e., implements the method for detecting a valve box leak of the three-pipe simultaneous cooling and heating air conditioner in the above-described embodiment.
The memory 15 may include a storage program area that may store an operating system, at least one application program required for functions, and a storage data area; the storage data area may store data created according to the use of the terminal device, etc. In addition, the memory 15 may include a high-speed random access memory, and may also include a nonvolatile memory.
The embodiment of the disclosure provides an electronic device, which comprises the device for detecting the leakage of the valve box.
Optionally, the electronic device comprises a three-pipeline simultaneous cooling and heating air conditioner, a computer or a server, and the like.
The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may involve structural, logical, electrical, process, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. Moreover, the terminology used in the present application is for the purpose of describing embodiments only and is not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a," "an," and "the" (the) are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, 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. Furthermore, when used in this application, the terms "comprises," "comprising," and/or "includes," and variations thereof, mean that the stated features, integers, steps, operations, elements, and/or components are present, but that the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof is not precluded. Without further limitation, an element defined by the phrase "comprising one …" does not exclude the presence of other like elements in a process, method or apparatus comprising such elements. In this context, each embodiment may be described with emphasis on the differences from the other embodiments, and the same similar parts between the various embodiments may be referred to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method sections disclosed in the embodiments, the description of the method sections may be referred to for relevance.
Those of skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. The skilled artisan may use different methods for each particular application to achieve the described functionality, but such implementation should not be considered to be beyond the scope of the embodiments of the present disclosure. It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.
The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than that disclosed in the description, and sometimes no specific order exists between different operations or steps. For example, two consecutive operations or steps may actually be performed substantially in parallel, they may sometimes be performed in reverse order, which may be dependent on the functions involved. Each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Claims (10)
1. The utility model provides a method for detecting three pipeline simultaneous cooling and heating air conditioner's valve box reveal, three pipeline simultaneous cooling and heating air conditioner's off-premises station passes through low pressure air pipe and high pressure air pipe the valve box is connected indoor set trachea, the valve box is used for realizing the switching of high low pressure refrigerant, its characterized in that, the method includes:
acquiring the temperature of a low-pressure air pipe in the valve box;
and determining whether the valve box leaks refrigerant according to the temperature of the low-pressure air pipe.
2. The method of claim 1, wherein the high pressure gas line in the valve box is provided with a high pressure valve, and acquiring the temperature of the low pressure gas line in the valve box comprises:
and when the high-pressure valve is closed, acquiring the temperature of a low-pressure air pipe in the valve box.
3. The method of claim 2, wherein determining whether the valve box has refrigerant leakage based on the temperature of the low pressure gas line comprises:
acquiring indoor environment temperature;
and determining that the valve box is leaked by the refrigerant under the condition that the difference between the temperature of the low-pressure air pipe and the indoor environment temperature is greater than or equal to a first preset temperature and lasts for a first preset time.
4. The method of claim 2, wherein determining whether the valve box has refrigerant leakage based on the temperature of the low pressure gas line comprises:
acquiring the temperature of an air pipe of the indoor unit;
and determining that the valve box leaks refrigerant under the condition that the difference between the temperature of the low-pressure air pipe and the temperature of the indoor unit air pipe is larger than or equal to a second preset temperature and the first preset time is continuous.
5. The method of claim 1, wherein the low pressure gas line in the valve box is provided with a low pressure valve, and acquiring the temperature of the low pressure gas line comprises:
and acquiring the temperature of a low-pressure air pipe in the valve box under the condition that the low-pressure valve is closed.
6. The method of claim 5, wherein determining whether the valve box has refrigerant leakage based on the temperature of the low pressure gas line comprises:
acquiring indoor environment temperature;
and determining that the valve box is leaked by the refrigerant under the condition that the difference between the temperature of the low-pressure air pipe and the indoor environment temperature is greater than or equal to a third preset temperature and the first preset time is continuous.
7. The method of claim 3 or 4, wherein after determining that the valve box has a refrigerant leak, further comprising:
and controlling the high-pressure valve to reset according to a preset first reset operation.
8. The method of claim 6, wherein after determining that the valve cartridge has leaked, further comprising:
and controlling the low-pressure valve to reset according to a preset second reset operation.
9. An apparatus for detecting a valve box leakage of a three-pipe simultaneous cooling and heating air conditioner, comprising a processor and a memory storing program instructions, wherein the processor is configured to perform the method for detecting a valve box leakage of a three-pipe simultaneous cooling and heating air conditioner according to any one of claims 1 to 8 when the program instructions are executed.
10. An electronic apparatus comprising the device for detecting leakage of the valve box of the three-pipe simultaneous cooling and heating air conditioner according to claim 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210840552.8A CN117450622A (en) | 2022-07-18 | 2022-07-18 | Method and device for detecting valve box leakage of three-pipeline simultaneous cooling and heating air conditioner and electronic equipment |
| PCT/CN2023/096251 WO2024016834A1 (en) | 2022-07-18 | 2023-05-25 | Method and apparatus for detecting leakage of valve box of air conditioner having three pipes for heating and cooling at the same time and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210840552.8A CN117450622A (en) | 2022-07-18 | 2022-07-18 | Method and device for detecting valve box leakage of three-pipeline simultaneous cooling and heating air conditioner and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117450622A true CN117450622A (en) | 2024-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210840552.8A Pending CN117450622A (en) | 2022-07-18 | 2022-07-18 | Method and device for detecting valve box leakage of three-pipeline simultaneous cooling and heating air conditioner and electronic equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN117450622A (en) |
| WO (1) | WO2024016834A1 (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4926098B2 (en) * | 2008-03-14 | 2012-05-09 | 三菱電機株式会社 | Refrigeration equipment |
| JP6331768B2 (en) * | 2014-06-27 | 2018-05-30 | ダイキン工業株式会社 | Cooling and heating simultaneous operation type air conditioner |
| CN104655365A (en) * | 2014-12-30 | 2015-05-27 | 海信科龙电器股份有限公司 | Method for detecting refrigerant leakage and air conditioner |
| JP6604051B2 (en) * | 2015-06-26 | 2019-11-13 | ダイキン工業株式会社 | Air conditioning system |
| JP6827279B2 (en) * | 2016-07-15 | 2021-02-10 | 日立ジョンソンコントロールズ空調株式会社 | Cooling / heating switching unit and air conditioner equipped with it |
| CN106322584A (en) * | 2016-09-28 | 2017-01-11 | 青岛海尔空调电子有限公司 | Valve box for three-pipeline air conditioner capable of simultaneously cooling and heating and three-pipeline air conditioner capable of simultaneously cooling and heating |
| CN106895558B (en) * | 2017-02-21 | 2019-07-19 | 美的集团股份有限公司 | The detection method and device of air-conditioner coolant leakage |
| CN111520870B (en) * | 2020-03-26 | 2022-05-10 | 青岛海信日立空调系统有限公司 | Air conditioning system |
| CN111503852B (en) * | 2020-04-29 | 2021-11-05 | 广东美的暖通设备有限公司 | Air conditioner and control method and device thereof |
| CN111503948A (en) * | 2020-04-29 | 2020-08-07 | 广东美的暖通设备有限公司 | Multi-split air conditioning system, method and device for detecting leakage of refrigeration valve of multi-split air conditioning system and storage medium |
-
2022
- 2022-07-18 CN CN202210840552.8A patent/CN117450622A/en active Pending
-
2023
- 2023-05-25 WO PCT/CN2023/096251 patent/WO2024016834A1/en unknown
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| WO2024016834A1 (en) | 2024-01-25 |
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