Gas leak detection methods, devices, electronic equipment and storage media

Abstract

This application discloses a gas leak detection method, device, electronic equipment, and storage medium, belonging to the field of gas heat pump air conditioning technology. The method is applied to a gas heat pump air conditioner operating in a target temperature control mode. The method includes: acquiring the current high-pressure and current exhaust temperature of the gas heat pump air conditioner, and acquiring the target high-pressure and target exhaust temperature of the gas heat pump air conditioner under the target temperature control mode; determining a high-pressure pressure difference based on the current high-pressure and the target high-pressure, and determining an exhaust temperature difference based on the current exhaust temperature and the target exhaust temperature; and determining the gas leak status of the gas heat pump air conditioner based on the high-pressure pressure difference and the exhaust temperature difference. This method can detect whether a gas leak exists in a gas heat pump air conditioner, helping to provide early warning and protective actions, and improving the safety of using the gas heat pump air conditioner.

Description

Technical Field

[0001] This application belongs to the field of gas heat pump air conditioning technology, and particularly relates to a gas leak detection method, device, electronic equipment and storage medium. Background Technology

[0002] Gas-fired heat pump air conditioners do not consume electricity and use clean energy, natural gas, to achieve both cooling and heating. They feature higher primary energy utilization and lower emissions compared to coal-fired systems.

[0003] The natural gas inlet of a gas-fired air conditioning system is usually a flexible connection. After the air conditioning unit of the gas-fired air conditioning system is installed, there is a certain risk of leakage. When the leakage reaches a certain concentration, there is also a risk of explosion.

[0004] Currently, most gas leak detection technologies rely on specialized gas detection equipment. This method requires additional equipment, increasing costs and labor time, and is not suitable for detecting gas leaks in gas-fired air conditioning systems. Summary of the Invention

[0005] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a gas leak detection method, device, electronic equipment, and storage medium, which can detect gas leaks in gas-fired heat pump air conditioners in real time, helping to provide early warning and protective actions, and improving the safety of using gas-fired heat pump air conditioners.

[0006] In a first aspect, this application provides a gas leak detection method, which is applied to a gas heat pump air conditioner, wherein the gas heat pump air conditioner is operating in a target temperature control mode, and the method includes:

[0007] The current high pressure and current exhaust temperature of the gas heat pump air conditioner are obtained, and the target high pressure and target exhaust temperature of the gas heat pump air conditioner under the target temperature control mode are also obtained.

[0008] The high pressure difference is determined based on the current high pressure and the target high pressure, and the exhaust temperature difference is determined based on the current exhaust temperature and the target exhaust temperature.

[0009] Based on the high pressure difference and the exhaust temperature difference, the gas leakage status of the gas heat pump air conditioner is determined.

[0010] According to the gas leak detection method of this application, by real-time detection of the high pressure and exhaust temperature of the gas heat pump air conditioner, and comparison with the preset target high pressure and target exhaust temperature, the degree of deviation of the two state parameters is determined, and it is determined whether there is a gas leak in the gas heat pump air conditioner. This helps to make early warnings and protective actions, and improve the safety of using the gas heat pump air conditioner.

[0011] According to one embodiment of this application, obtaining the target high-pressure pressure and target exhaust temperature of the gas heat pump air conditioner under the target temperature control mode includes:

[0012] Obtain the current ambient temperature and indoor unit operating capacity of the gas heat pump air conditioner;

[0013] Based on the current ambient temperature, the indoor unit's operating capacity, and the current high pressure, the target high pressure and the target exhaust temperature are determined.

[0014] According to one embodiment of this application, the target temperature control mode is a cooling mode, and determining the target high-pressure pressure and the target exhaust temperature based on the current ambient temperature, the indoor unit's operating capacity value, and the current high-pressure pressure includes:

[0015] When the current ambient temperature is determined to be greater than or equal to a first temperature threshold, the formula is applied.

[0016] HP=30+[(TS / TC)*(RFs / 840)*a+(RYs / 74)*(BF / QF)*5]

[0017] The target high-pressure is determined, wherein BF≥50%, a=0.7; BF<50%, a=0.3;

[0018] Alternatively, if it is determined that the current ambient temperature is less than the first temperature threshold and the indoor unit's operating capacity value is greater than or equal to the target capacity value threshold, the formula can be applied.

[0019] HP=30-[(TS / TC)*(RFs / 840)*0.7+(RYs / 74)*(BF / QF)*2.5]

[0020] Determine the target high pressure;

[0021] Alternatively, if it is determined that the current ambient temperature is less than the first temperature threshold and the indoor unit's operating capacity is less than the target capacity threshold, the formula can be applied.

[0022] HP=22-[(TS / TC)*(RFs / 840)*0.7+(74 / RYs)*(BF / QF)*2.5]

[0023] Determine the target high pressure;

[0024] and,

[0025] When the current ambient temperature is determined to be greater than or equal to the first temperature threshold, and the indoor unit's operating capacity value is greater than or equal to the target capacity value threshold, the formula is applied.

[0026] TP=90+(RYs / 74)*(HPs / 30)*(QF / BF)*(TS / TC)

[0027] Determine the target exhaust temperature;

[0028] Alternatively, if it is determined that the current ambient temperature is greater than or equal to the first temperature threshold, and the indoor unit's operating capacity value is less than the target capacity value threshold, the formula can be applied.

[0029] TP=90-(RYs / 74)*(HPs / 30)*(QF / BF)*(TS / TC)

[0030] Determine the target exhaust temperature;

[0031] Alternatively, if it is determined that the current ambient temperature is less than the first temperature threshold, and the indoor unit's operating capacity value is greater than or equal to the target capacity value threshold, the formula can be applied.

[0032] TP=76+(RYs / 74)*(HPs / 30)*(QF / BF)*(TC / TS)

[0033] Determine the target exhaust temperature;

[0034] Alternatively, if it is determined that the current ambient temperature is less than the first temperature threshold and the indoor unit's operating capacity is less than the target capacity threshold, the formula can be applied.

[0035] TP=50-(RYs / 74)*(HPs / 30)*(QF / BF)*(TC / TS)

[0036] Determine the target exhaust temperature;

[0037] Wherein, HP is the target high pressure, TP is the target exhaust temperature, TS is the current ambient temperature, TC is the standard operating dry bulb temperature of the cooling mode, RFs is the current speed of the outdoor fan in the cooling mode, RYs is the current speed of the compressor in the cooling mode, BF is the indoor unit activation capacity value, QF is the total indoor unit capacity value of the gas heat pump air conditioner, and HPs is the current high pressure.

[0038] According to one embodiment of this application, the target temperature control mode is a heating mode, and the step of determining the target high-pressure pressure and the target exhaust temperature based on the current ambient temperature, the indoor unit's operating capacity value, and the current high-pressure pressure includes:

[0039] When the current ambient temperature is determined to be greater than or equal to the second temperature threshold, and the indoor unit's operating capacity value is greater than or equal to the target capacity value threshold, the formula is applied.

[0040] HP=22+(TS / TH)*(RFs / 900)*1.2+(RYs / 82)*(QF / BF)*2

[0041] Determine the target high pressure;

[0042] Alternatively, if it is determined that the current ambient temperature is greater than or equal to the second temperature threshold, and the indoor unit's operating capacity value is less than the target capacity value threshold, the formula is applied.

[0043] HP=22+(TS / TH)*(RFs / 900)*1.2+(RYs / 82)*(QF / BF)*1.4

[0044] Determine the target high pressure;

[0045] Alternatively, if it is determined that the current ambient temperature is less than the second temperature threshold and greater than or equal to the third temperature threshold, the formula can be applied.

[0046] HP=17+(|TS| / TH)*(RFs / 900)*0.8+(RYs / 82)*(QF / BF)*2

[0047] The target high pressure is determined, and the third temperature threshold is less than the second temperature threshold;

[0048] Alternatively, if it is determined that the current ambient temperature is less than the third temperature threshold, and the indoor unit's operating capacity value is greater than or equal to the target capacity value threshold, the formula can be applied.

[0049] HP=17+(|TS|-7 / TH)*(RFs / 900)*0.8+(RYs / 82)*(QF / BF)*1

[0050] Determine the target high pressure;

[0051] Alternatively, if it is determined that the current ambient temperature is less than the third temperature threshold and the indoor unit's operating capacity is less than the target capacity threshold, the formula can be applied.

[0052] HP=17+(|TS|-7 / TH)*(RFs / 900)*0.8+(RYs / 82)*(QF / BF)*0.6

[0053] Determine the target high pressure;

[0054] and,

[0055] When the current ambient temperature is determined to be greater than or equal to the fourth temperature threshold, the formula is applied.

[0056] TP=72-(RYs / 82)*(HPs / 22)*(QF / BF)

[0057] The target exhaust temperature is determined, wherein the fourth temperature threshold is greater than the second temperature threshold;

[0058] Alternatively, if it is determined that the current ambient temperature is less than the fourth temperature threshold and greater than or equal to the second temperature threshold, and the indoor unit's operating capacity value is greater than or equal to the target capacity value threshold, the formula is applied.

[0059] TP=80+(RYs / 82)*(HPs / 22)*(QF / BF)

[0060] Determine the target exhaust temperature;

[0061] Alternatively, if it is determined that the current ambient temperature is less than the fourth temperature threshold and greater than or equal to the second temperature threshold, and the indoor unit's ability to operate is less than the target capability threshold, the formula is applied.

[0062] TP=68+(RYs / 82)*(HPs / 22)*(QF / BF)

[0063] Determine the target exhaust temperature;

[0064] Alternatively, if it is determined that the current ambient temperature is less than the second temperature threshold and greater than or equal to the third temperature threshold, the formula can be applied.

[0065] TP=77-((TS-7) / 7)*(RYs / 82)*(22 / HPs)*(QF / BF)

[0066] Determine the target exhaust temperature;

[0067] Alternatively, if it is determined that the current ambient temperature is less than the third temperature threshold, the formula can be applied.

[0068] TP=75-((TS-7) / 7)*(RYs / 82)*(22 / HPs)*(QF / BF)

[0069] Determine the target exhaust temperature;

[0070] Wherein, HP is the target high pressure, TP is the target exhaust temperature, TS is the current ambient temperature, TH is the standard operating dry bulb temperature of the heating mode, RFs is the current speed of the outdoor fan in the heating mode, RYs is the current speed of the compressor in the heating mode, BF is the indoor unit activation capacity value, QF is the total indoor unit capacity value of the gas heat pump air conditioner, and HPs is the current high pressure.

[0071] According to one embodiment of this application, the target temperature control mode is a cooling mode, and determining the gas leakage state of the gas heat pump air conditioner based on the high-pressure difference and the exhaust temperature difference includes:

[0072] If the duration of the state in which the high pressure difference is greater than or equal to the first pressure difference threshold and the exhaust temperature difference is greater than or equal to the first temperature difference threshold is longer than the first target duration, the gas heat pump air conditioner is controlled to shut down and a first-level leakage risk is reported, indicating that the gas heat pump air conditioner has a refrigerant leak.

[0073] Alternatively, if the duration of the state in which the high pressure difference is less than the first pressure difference threshold and greater than the second pressure difference threshold and the exhaust temperature difference is greater than or equal to the first temperature difference threshold is longer than the second target duration, the leakage risk area shall be reported.

[0074] Alternatively, if the high pressure difference is less than or equal to the second pressure difference threshold and the exhaust temperature difference is greater than or equal to the first temperature difference threshold, the gas heat pump air conditioner is determined to be in a leak-free state.

[0075] Alternatively, if the duration of the state in which the high pressure difference is greater than the first pressure difference threshold and the exhaust temperature difference is less than the first temperature difference threshold is longer than the first target duration, the gas heat pump air conditioner is shut down and a first-level leakage risk is reported, indicating that the gas heat pump air conditioner has a refrigerant leak.

[0076] Alternatively, if the duration of the state in which the high pressure difference is less than the first pressure difference threshold and greater than the second pressure difference threshold, and the exhaust temperature difference is less than the first temperature difference threshold, is longer than the second target duration, the leakage risk area shall be reported.

[0077] Alternatively, if the high-pressure difference is less than or equal to the second pressure difference threshold and the exhaust temperature difference is less than the first temperature difference threshold, the gas heat pump air conditioner is determined to be in a leak-free state.

[0078] According to one embodiment of this application, the target temperature control mode is a heating mode, and determining the gas leakage state of the gas heat pump air conditioner based on the high-pressure difference and the exhaust temperature difference includes:

[0079] If the duration of the state in which the high pressure difference is greater than or equal to the third pressure difference threshold and the exhaust temperature difference is greater than or equal to the second temperature difference threshold is longer than the third target duration, the gas heat pump air conditioner is controlled to shut down and a first-level leakage risk is reported, indicating that the gas heat pump air conditioner has a refrigerant leak.

[0080] Alternatively, if the duration of the state in which the high pressure difference is less than the third pressure difference threshold and greater than the fourth pressure difference threshold and the exhaust temperature difference is greater than or equal to the second temperature difference threshold is longer than the fourth target duration, the leakage risk area shall be reported.

[0081] Alternatively, if the high-pressure difference is less than or equal to the fourth pressure difference threshold and the exhaust temperature difference is greater than or equal to the second temperature difference threshold, the gas heat pump air conditioner is determined to be in a leak-free state.

[0082] Alternatively, if the duration of the state in which the high pressure difference is greater than the third pressure difference threshold and the exhaust temperature difference is less than the second temperature difference threshold is longer than the third target duration, the gas heat pump air conditioner is shut down and a first-level leakage risk is reported, indicating that the gas heat pump air conditioner has a refrigerant leak.

[0083] Alternatively, if the duration of the state in which the high pressure difference is less than the third pressure difference threshold and greater than the fourth pressure difference threshold and the exhaust temperature difference is less than the second temperature difference threshold is longer than the fourth target duration, the leakage risk area shall be reported.

[0084] Alternatively, if the high-pressure difference is less than or equal to the fourth pressure difference threshold and the exhaust temperature difference is less than the second temperature difference threshold, the gas heat pump air conditioner is determined to be in a leak-free state.

[0085] According to one embodiment of this application, obtaining the target high-pressure pressure and target exhaust temperature of the gas heat pump air conditioner under the target temperature control mode includes:

[0086] The target high pressure and the target exhaust temperature are obtained according to the target time interval.

[0087] Secondly, this application provides a gas leak detection device, which is applied to a gas heat pump air conditioner, the gas heat pump air conditioner operating in a target temperature control mode, the device comprising:

[0088] The acquisition module is used to acquire the current high pressure and current exhaust temperature of the gas heat pump air conditioner, and to acquire the target high pressure and target exhaust temperature of the gas heat pump air conditioner under the target temperature control mode.

[0089] The first processing module is used to determine the high pressure difference based on the current high pressure and the target high pressure, and to determine the exhaust temperature difference based on the current exhaust temperature and the target exhaust temperature;

[0090] The second processing module is used to determine the gas leakage status of the gas heat pump air conditioner based on the high pressure difference and the exhaust temperature difference.

[0091] According to the gas leak detection device of this application, by real-time detection of the high pressure and exhaust temperature of the gas heat pump air conditioner, and comparison with the preset target high pressure and target exhaust temperature, the degree of deviation of the two state parameters is determined, and it is determined whether there is a gas leak in the gas heat pump air conditioner. This helps to make early warnings and protective actions, and improve the safety of using the gas heat pump air conditioner.

[0092] Thirdly, this application provides an electronic device including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the gas leak detection method as described in the first aspect above.

[0093] Fourthly, this application provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the gas leak detection method as described in the first aspect above.

[0094] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0095] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0096] Figure 1 This is a schematic flowchart of the gas leak detection method provided in the embodiments of this application;

[0097] Figure 2 This is a schematic diagram of the structure of the gas heat pump air conditioner provided in the embodiments of this application;

[0098] Figure 3 This is a schematic diagram of the structure of the gas leak detection device provided in the embodiments of this application;

[0099] Figure 4This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application.

[0100] Figure label:

[0101] Gas intake pipe 210, gas engine 220, transmission components 230, compressor 240, high pressure sensor 241, exhaust temperature sensor 242, gas-liquid separator 250, four-way valve 251, gas pipe valve 252, liquid pipe valve 253, outdoor heat exchanger 261, outdoor side fan 262, outdoor electronic expansion valve 263, ambient temperature sensor 264, indoor heat exchanger 271, indoor side fan 272, indoor electronic expansion valve 273. Detailed Implementation

[0102] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0103] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0104] The following description, in conjunction with the accompanying drawings, details the gas leak detection method, gas leak detection device, electronic device, and readable storage medium provided in this application through specific embodiments and application scenarios.

[0105] Among them, the gas leak detection method can be applied to the terminal, which can be executed by the hardware or software in the terminal.

[0106] The terminal includes, but is not limited to, portable communication devices such as mobile phones or tablets with touch-sensitive surfaces (e.g., touchscreen displays and / or touchpads). It should also be understood that, in some embodiments, the terminal may not be a portable communication device, but rather a desktop computer with touch-sensitive surfaces (e.g., touchscreen displays and / or touchpads).

[0107] The following embodiments describe a terminal including a display and a touch-sensitive surface. However, it should be understood that the terminal may include one or more other physical user interface devices such as a physical keyboard, mouse, and joystick.

[0108] The gas leak detection method provided in this application embodiment can be executed by an electronic device or a functional module or entity in an electronic device that can implement the gas leak detection method. The electronic devices mentioned in this application embodiment include, but are not limited to, mobile phones, tablets, computers, cameras, and wearable devices. The following uses an electronic device as the execution subject to illustrate the gas leak detection method provided in this application embodiment.

[0109] The gas leak detection method provided in this application is applied to a gas heat pump air conditioner, which operates in a target temperature control mode.

[0110] like Figure 1 As shown, the gas leak detection method includes steps 110, 120 and 130.

[0111] Step 110: Obtain the current high pressure and current exhaust temperature of the gas heat pump air conditioner, and obtain the target high pressure and target exhaust temperature of the gas heat pump air conditioner under the target temperature control mode.

[0112] In this embodiment, such as Figure 2 As shown, a high-pressure sensor 241 and an exhaust temperature sensor 242 can be installed at the compressor 240 of the gas heat pump air conditioner to detect the current high pressure and current exhaust temperature of the gas heat pump air conditioner in real time.

[0113] It is understandable that, in addition to the compressor 240, the gas heat pump air conditioning system also includes components such as the gas inlet pipe 210, gas engine 220, transmission components 230, gas-liquid separator 250, four-way valve 251, gas pipe valve 252, liquid pipe valve 253, outdoor heat exchanger 261, outdoor side fan 262, outdoor electronic expansion valve 263, ambient temperature sensor 264, indoor heat exchanger 271, indoor side fan 272, and indoor electronic expansion valve 273.

[0114] In this embodiment, the target high pressure and target exhaust temperature are the state parameters corresponding to the gas heat pump air conditioner when there is no gas leakage. The target high pressure and target exhaust temperature are related to the target temperature control mode of the gas heat pump air conditioner. Different target temperature control modes correspond to different target high pressure and target exhaust temperatures.

[0115] Step 120: Determine the high pressure difference based on the current high pressure and the target high pressure, and determine the exhaust temperature difference based on the current exhaust temperature and the target exhaust temperature.

[0116] It should be noted that when there is a gas leak at the gas inlet pipe of a gas heat pump air conditioner, the leakage can be determined by the high pressure and exhaust temperature of the gas heat pump air conditioner.

[0117] In this step, the difference between the current high pressure and the target high pressure detected in real time is calculated, i.e., the high pressure difference, and the difference between the current exhaust temperature and the target exhaust temperature detected in real time is calculated, i.e., the exhaust temperature difference.

[0118] Step 130: Determine the gas leakage status of the gas heat pump air conditioner based on the high pressure difference and exhaust temperature difference.

[0119] In this embodiment, when the gas heat pump air conditioner is supplying gas normally, the state parameters such as high pressure and exhaust temperature remain within a relatively stable range. The difference between the current high pressure and the target high pressure, as well as the difference between the current exhaust temperature and the target exhaust temperature, are calculated. Based on the degree of deviation of the two state parameters, it can be determined whether there is a leakage phenomenon.

[0120] In practice, a certain range of differences can be preset. When the difference between the high pressure and the exhaust temperature exceeds the corresponding range, it can be determined that the gas heat pump air conditioner has a gas leak; when the difference between the high pressure and the exhaust temperature is within the corresponding range, it can be determined that the gas heat pump air conditioner has no gas leak.

[0121] In this embodiment, during the operation of the gas heat pump air conditioner, the high pressure and exhaust temperature of the gas heat pump air conditioner are monitored in real time to determine whether there is a gas leak. When a gas leak is detected, an early warning and corresponding protective actions can be taken in a timely manner, improving the safety of the gas heat pump air conditioner and reducing the cost of gas leak detection.

[0122] According to the gas leak detection method provided in the embodiments of this application, the high pressure and exhaust temperature of the gas heat pump air conditioner are detected in real time and compared with the preset target high pressure and target exhaust temperature to determine the degree of deviation of the two state parameters, thereby determining whether there is a gas leak in the gas heat pump air conditioner. This helps to make early warnings and protective actions, and improve the safety of using the gas heat pump air conditioner.

[0123] In some embodiments, step 110, obtaining the target high-pressure pressure and target exhaust temperature of the gas heat pump air conditioner in the target temperature control mode, may include:

[0124] Obtain the current ambient temperature and indoor unit operating capacity of the gas heat pump air conditioner;

[0125] Based on the current ambient temperature, the indoor unit's operating capacity, and the current high-pressure, determine the target high-pressure and target exhaust temperature.

[0126] In this embodiment, the target high pressure and target exhaust temperature of the gas heat pump air conditioner under the target temperature control mode can be calculated by determining the corresponding calculation formula based on the current ambient temperature, the indoor unit's operating capacity, and the current high pressure, and then inputting the corresponding parameters.

[0127] The current ambient temperature can be the ambient temperature on one side of the outdoor heat exchanger 261 of the gas heat pump air conditioner. The gas heat pump air conditioner unit can automatically report the indoor unit's capacity value.

[0128] like Figure 2 As shown, the system containing the gas heat pump air conditioner may include components such as a gas inlet pipe 210, a gas engine 220, a transmission component 230, a compressor 240, a high-pressure sensor 241, an exhaust temperature sensor 242, a gas-liquid separator 250, a four-way valve 251, an outdoor heat exchanger 261, an outdoor side fan 262, an ambient temperature sensor 264, an indoor heat exchanger 271, and an indoor side fan 272.

[0129] In this embodiment, the high-pressure sensor 241 can detect the current high pressure in real time, the exhaust temperature sensor 242 can detect the current exhaust temperature in real time, and the ambient temperature sensor 264 can detect the current ambient temperature in real time.

[0130] In some embodiments, step 110, obtaining the target high-pressure pressure and target exhaust temperature of the gas heat pump air conditioner in the target temperature control mode, may include:

[0131] According to the target time interval, obtain the target high pressure and the target exhaust temperature.

[0132] It should be noted that the target high pressure and target exhaust temperature are not fixed values. As the gas heat pump air conditioner operates, parameters such as the current ambient temperature, indoor unit operating capacity, and current high pressure may change. Based on the real-time parameters, the target high pressure and target exhaust temperature are calculated according to the target time interval.

[0133] For example, the target time interval is 40 seconds.

[0134] When the gas heat pump air conditioner is turned on, it enters either cooling or heating mode according to the user's selection. After the start-up, each sensor monitors the system status parameters in real time. Based on these status parameters, the system begins to calculate the target high pressure and target exhaust temperature, updating the parameters every 40 seconds.

[0135] It should be noted that the target temperature control mode can be either cooling mode or heating mode.

[0136] The following section provides a detailed description of how to calculate the target high-pressure and target exhaust temperature in cooling and heating modes.

[0137] First, the calculation of the target high pressure in cooling mode.

[0138] In some embodiments, when it is determined that the current ambient temperature is greater than or equal to a first temperature threshold, the formula is applied.

[0139] HP=30+[(TS / TC)*(RFs / 840)*a+(RYs / 74)*(BF / QF)*5]

[0140] Determine the target high pressure.

[0141] In the above formula, 'a' is a correction coefficient. When BF ≥ 50%, a = 0.7; when BF < 50%, a = 0.3.

[0142] Where HP is the target high pressure, TS is the current ambient temperature, TC is the standard operating dry bulb temperature in cooling mode, RFs is the current speed of the outdoor fan in cooling mode, RYs is the current speed of the compressor in cooling mode, BF is the indoor unit capacity value, and QF is the total indoor unit capacity value of the gas heat pump air conditioner.

[0143] TC can include the outdoor dry-bulb temperature and the indoor dry-bulb temperature under standard operating conditions of the gas heat pump air conditioner in cooling mode.

[0144] In this embodiment, under standard operating conditions of the gas heat pump air conditioner in cooling mode, the outdoor dry-bulb temperature can be 35°C, the outdoor wet-bulb temperature can be 24°C, the indoor dry-bulb temperature can be 27°C, and the indoor wet-bulb temperature can be 19°C.

[0145] In some embodiments, when it is determined that the current ambient temperature is less than a first temperature threshold and the indoor unit's operating capacity is greater than or equal to a target capacity threshold, the formula is applied.

[0146] HP=30-[(TS / TC)*(RFs / 840)*0.7+(RYs / 74)*(BF / QF)*2.5]

[0147] Determine the target high pressure.

[0148] Where HP is the target high pressure, TS is the current ambient temperature, TC is the standard operating dry bulb temperature in cooling mode, RFs is the current speed of the outdoor fan in cooling mode, RYs is the current speed of the compressor in cooling mode, BF is the indoor unit capacity value, and QF is the total indoor unit capacity value of the gas heat pump air conditioner.

[0149] In some embodiments, when it is determined that the current ambient temperature is less than a first temperature threshold and the indoor unit's operating capacity is less than a target capacity threshold, the formula is applied.

[0150] HP=22-[(TS / TC)*(RFs / 840)*0.7+(74 / RYs)*(BF / QF)*2.5]

[0151] Determine the target high pressure.

[0152] Where HP is the target high pressure, TS is the current ambient temperature, TC is the standard operating dry bulb temperature in cooling mode, RFs is the current speed of the outdoor fan in cooling mode, RYs is the current speed of the compressor in cooling mode, BF is the indoor unit capacity value, and QF is the total indoor unit capacity value of the gas heat pump air conditioner.

[0153] Taking a first temperature threshold of 35℃ and a target capability threshold of 50% as an example.

[0154] The formula for calculating the target high pressure in cooling mode is as follows:

[0155] 1) TS ≥ 35℃.

[0156] HP=30+[(TS / TC)*(RFs / 840)*a+(RYs / 74)*(BF / QF)*5]

[0157] Where 'a' is a correction factor, a = 0.7 when BF ≥ 50% and a = 0.3 when BF < 50%.

[0158] 2) TS < 35℃, BF ≥ 50%.

[0159] HP=30-[(TS / TC)*(RFs / 840)*0.7+(RYs / 74)*(BF / QF)*2.5].

[0160] 3) TS < 35℃, BF < 50%.

[0161] HP=22-[(TS / TC)*(RFs / 840)*0.7+(74 / RYs)*(BF / QF)*2.5].

[0162] Secondly, the calculation of the target exhaust temperature in cooling mode.

[0163] In some embodiments, when it is determined that the current ambient temperature is greater than or equal to a first temperature threshold, and the indoor unit's operating capacity value is greater than or equal to a target capacity value threshold, the formula is applied.

[0164] TP=90+(RYs / 74)*(HPs / 30)*(QF / BF)*(TS / TC)

[0165] Determine the target exhaust temperature.

[0166] Wherein, TP is the target exhaust temperature, TS is the current ambient temperature, TC is the standard operating dry-bulb temperature in cooling mode, RYs is the current compressor speed in cooling mode, BF is the indoor unit capacity value, QF is the total indoor unit capacity value of the gas heat pump air conditioner, and HPs is the current high pressure.

[0167] In some embodiments, when it is determined that the current ambient temperature is greater than or equal to a first temperature threshold, and the indoor unit's operating capacity is less than a target capacity threshold, the formula is applied.

[0168] TP=90-(RYs / 74)*(HPs / 30)*(QF / BF)*(TS / TC)

[0169] Determine the target exhaust temperature.

[0170] Wherein, TP is the target exhaust temperature, TS is the current ambient temperature, TC is the standard operating dry-bulb temperature in cooling mode, RYs is the current compressor speed in cooling mode, BF is the indoor unit capacity value, QF is the total indoor unit capacity value of the gas heat pump air conditioner, and HPs is the current high pressure.

[0171] In some embodiments, when it is determined that the current ambient temperature is less than a first temperature threshold and the indoor unit's operating capacity is greater than or equal to a target capacity threshold, the formula is applied.

[0172] TP=76+(RYs / 74)*(HPs / 30)*(QF / BF)*(TC / TS)

[0173] Determine the target exhaust temperature.

[0174] Wherein, TP is the target exhaust temperature, TS is the current ambient temperature, TC is the standard operating dry-bulb temperature in cooling mode, RYs is the current compressor speed in cooling mode, BF is the indoor unit capacity value, QF is the total indoor unit capacity value of the gas heat pump air conditioner, and HPs is the current high pressure.

[0175] In some embodiments, when it is determined that the current ambient temperature is less than a first temperature threshold and the indoor unit's operating capacity is less than a target capacity threshold, the formula is applied.

[0176] TP=50-(RYs / 74)*(HPs / 30)*(QF / BF)*(TC / TS)

[0177] Determine the target exhaust temperature.

[0178] Wherein, TP is the target exhaust temperature, TS is the current ambient temperature, TC is the standard operating dry-bulb temperature in cooling mode, RYs is the current compressor speed in cooling mode, BF is the indoor unit capacity value, QF is the total indoor unit capacity value of the gas heat pump air conditioner, and HPs is the current high pressure.

[0179] Taking a first temperature threshold of 35℃ and a target capability threshold of 50% as an example.

[0180] The formula for calculating the target exhaust temperature in cooling mode is as follows:

[0181] 1) TS≥35℃, BF≥50%.

[0182] TP=90+(RYs / 74)*(HPs / 30)*(QF / BF)*(TS / TC).

[0183] 2) TS ≥ 35℃, BF < 50%.

[0184] TP=90-(RYs / 74)*(HPs / 30)*(QF / BF)*(TS / TC).

[0185] 3) TS < 35℃, BF ≥ 50%.

[0186] TP=76+(RYs / 74)*(HPs / 30)*(QF / BF)*(TC / TS).

[0187] 4) TS < 35℃, BF < 50%.

[0188] TP=50-(RYs / 74)*(HPs / 30)*(QF / BF)*(TC / TS).

[0189] Third, the calculation of the target high pressure in heating mode.

[0190] In some embodiments, when it is determined that the current ambient temperature is greater than or equal to a second temperature threshold, and the indoor unit's operating capacity value is greater than or equal to a target capacity value threshold, the formula is applied.

[0191] HP=22+(TS / TH)*(RFs / 900)*1.2+(RYs / 82)*(QF / BF)*2

[0192] Determine the target high pressure.

[0193] Where HP is the target high pressure, TS is the current ambient temperature, TH is the standard operating dry bulb temperature in heating mode, RFs is the current speed of the outdoor fan in heating mode, RYs is the current speed of the compressor in heating mode, BF is the indoor unit capacity value, and QF is the total indoor unit capacity value of the gas heat pump air conditioner.

[0194] TH can include the outdoor dry-bulb temperature and indoor dry-bulb temperature under standard operating conditions of the gas heat pump air conditioner heating mode.

[0195] In this embodiment, under standard operating conditions of the gas heat pump air conditioner heating mode, the outdoor dry-bulb temperature can be 7°C, the outdoor wet-bulb temperature can be 6°C, the indoor dry-bulb temperature can be 20°C, and the indoor wet-bulb temperature can be 15°C.

[0196] It should be noted that the gas heat pump air conditioner can be set with a high pressure HPb under standard operating conditions. The calculated target high pressure HP is compared with it to determine whether the calculated HP is reasonable.

[0197] For example, the high pressure HPb under standard operating conditions in cooling mode can be 30, and the high pressure HPb under standard operating conditions in heating mode can be 22.

[0198] In some embodiments, when it is determined that the current ambient temperature is greater than or equal to a second temperature threshold, and the indoor unit's operating capacity is less than a target capacity threshold, the formula is applied.

[0199] HP=22+(TS / TH)*(RFs / 900)*1.2+(RYs / 82)*(QF / BF)*1.4

[0200] Determine the target high pressure.

[0201] Where HP is the target high pressure, TS is the current ambient temperature, TH is the standard operating dry bulb temperature in heating mode, RFs is the current speed of the outdoor fan in heating mode, RYs is the current speed of the compressor in heating mode, BF is the indoor unit capacity value, and QF is the total indoor unit capacity value of the gas heat pump air conditioner.

[0202] In some embodiments, when it is determined that the current ambient temperature is less than a second temperature threshold and greater than or equal to a third temperature threshold, the formula is applied.

[0203] HP=17+(|TS| / TH)*(RFs / 900)*0.8+(RYs / 82)*(QF / BF)*2

[0204] The target high pressure is determined, and the third temperature threshold is less than the second temperature threshold.

[0205] Where HP is the target high pressure, TS is the current ambient temperature, TH is the standard operating dry bulb temperature in heating mode, RFs is the current speed of the outdoor fan in heating mode, RYs is the current speed of the compressor in heating mode, BF is the indoor unit capacity value, and QF is the total indoor unit capacity value of the gas heat pump air conditioner.

[0206] In some embodiments, when it is determined that the current ambient temperature is less than a third temperature threshold and the indoor unit's operating capacity is greater than or equal to a target capacity threshold, the formula is applied.

[0207] HP=17+(|TS|-7 / TH)*(RFs / 900)*0.8+(RYs / 82)*(QF / BF)*1

[0208] Determine the target high pressure.

[0209] Where HP is the target high pressure, TS is the current ambient temperature, TH is the standard operating dry bulb temperature in heating mode, RFs is the current speed of the outdoor fan in heating mode, RYs is the current speed of the compressor in heating mode, BF is the indoor unit capacity value, and QF is the total indoor unit capacity value of the gas heat pump air conditioner.

[0210] In some embodiments, when it is determined that the current ambient temperature is less than a third temperature threshold and the indoor unit's operating capacity is less than a target capacity threshold, the formula is applied.

[0211] HP=17+(|TS|-7 / TH)*(RFs / 900)*0.8+(RYs / 82)*(QF / BF)*0.6

[0212] Determine the target high pressure.

[0213] Where HP is the target high pressure, TS is the current ambient temperature, TH is the standard operating dry bulb temperature in heating mode, RFs is the current speed of the outdoor fan in heating mode, RYs is the current speed of the compressor in heating mode, BF is the indoor unit capacity value, and QF is the total indoor unit capacity value of the gas heat pump air conditioner.

[0214] Taking a second temperature threshold of 0℃, a third temperature threshold of -7℃, and a target capability threshold of 50% as an example.

[0215] The formula for calculating the target high pressure in heating mode is as follows:

[0216] 1) TS ≥ 0℃, BF ≥ 50%.

[0217] HP=22+(TS / TH)*(RFs / 900)*1.2+(RYs / 82)*(QF / BF)*2.

[0218] 2) TS ≥ 0℃, BF < 50%.

[0219] HP=22+(TS / TH)*(RFs / 900)*1.2+(RYs / 82)*(QF / BF)*1.4.

[0220] 3) -7℃≤TS<0℃.

[0221] HP=17+(|TS| / TH)*(RFs / 900)*0.8+(RYs / 82)*(QF / BF)*2.

[0222] 4) TS < -7℃, BF ≥ 50%.

[0223] HP=17+(|TS|-7 / TH)*(RFs / 900)*0.8+(RYs / 82)*(QF / BF)*1.

[0224] 5) TS < -7℃, BF < 50%.

[0225] HP=17+(|TS|-7 / TH)*(RFs / 900)*0.8+(RYs / 82)*(QF / BF)*0.6.

[0226] Fourth, the calculation of the target exhaust temperature in heating mode.

[0227] In some embodiments, when it is determined that the current ambient temperature is greater than or equal to a fourth temperature threshold, the formula is applied.

[0228] TP=72-(RYs / 82)*(HPs / 22)*(QF / BF)

[0229] Determine the target exhaust temperature; the fourth temperature threshold is greater than the second temperature threshold.

[0230] Where TP is the target exhaust temperature, RYs is the current compressor speed in heating mode, BF is the indoor unit capacity value, QF is the total indoor unit capacity value of the gas heat pump air conditioner, and HPs is the current high pressure.

[0231] In some embodiments, when it is determined that the current ambient temperature is less than a fourth temperature threshold and greater than or equal to a second temperature threshold, and the indoor unit's operating capacity value is greater than or equal to a target capacity value threshold, the formula is applied.

[0232] TP=80+(RYs / 82)*(HPs / 22)*(QF / BF)

[0233] Determine the target exhaust temperature.

[0234] Where TP is the target exhaust temperature, RYs is the current compressor speed in heating mode, BF is the indoor unit capacity value, QF is the total indoor unit capacity value of the gas heat pump air conditioner, and HPs is the current high pressure.

[0235] In some embodiments, when it is determined that the current ambient temperature is less than a fourth temperature threshold and greater than or equal to a second temperature threshold, and the indoor unit's operating capacity is less than a target capacity threshold, the formula is applied.

[0236] TP=68+(RYs / 82)*(HPs / 22)*(QF / BF)

[0237] Determine the target exhaust temperature.

[0238] Where TP is the target exhaust temperature, RYs is the current compressor speed in heating mode, BF is the indoor unit capacity value, QF is the total indoor unit capacity value of the gas heat pump air conditioner, and HPs is the current high pressure.

[0239] In some embodiments, when it is determined that the current ambient temperature is less than a second temperature threshold and greater than or equal to a third temperature threshold, the formula is applied.

[0240] TP=77-((TS-7) / 7)*(RYs / 82)*(22 / HPs)*(QF / BF)

[0241] Determine the target exhaust temperature.

[0242] Where TP is the target exhaust temperature, TS is the current ambient temperature, RYs is the current compressor speed in heating mode, BF is the indoor unit capacity value, QF is the total indoor unit capacity value of the gas heat pump air conditioner, and HPs is the current high pressure.

[0243] In some embodiments, when it is determined that the current ambient temperature is less than a third temperature threshold, the formula is applied.

[0244] TP=75-((TS-7) / 7)*(RYs / 82)*(22 / HPs)*(QF / BF)

[0245] Determine the target exhaust temperature.

[0246] Where TP is the target exhaust temperature, TS is the current ambient temperature, RYs is the current compressor speed in heating mode, BF is the indoor unit capacity value, QF is the total indoor unit capacity value of the gas heat pump air conditioner, and HPs is the current high pressure.

[0247] Taking a fourth temperature threshold of 7℃, a second temperature threshold of 0℃, a third temperature threshold of -7℃, and a target capability threshold of 50% as an example.

[0248] The formula for calculating the target exhaust temperature in heating mode is as follows:

[0249] 1) TS ≥ 7℃.

[0250] TP=72-(RYs / 82)*(HPs / 22)*(QF / BF).

[0251] 2) 0℃≤TS<7℃, BF≥50%.

[0252] TP=80+(RYs / 82)*(HPs / 22)*(QF / BF).

[0253] 3)0℃≤TS<7℃, BF<50%.

[0254] TP=68+(RYs / 82)*(HPs / 22)*(QF / BF).

[0255] 4) -7℃≤TS<0℃.

[0256] TP=77-((TS-7) / 7)*(RYs / 82)*(22 / HPs)*(QF / BF).

[0257] 5) TS < -7℃.

[0258] TP=75-((TS-7) / 7)*(RYs / 82)*(22 / HPs)*(QF / BF).

[0259] In this embodiment, after obtaining the above detection values, the fuel heat pump air conditioner unit can calculate the target high pressure and target exhaust temperature under the current operating conditions by substituting the values ​​into the corresponding formula according to the value range. The target high pressure and target exhaust temperature are then compared with the actual current high pressure and current exhaust temperature. Based on the degree of deviation, it is determined whether there is a gas leak in the fuel heat pump air conditioner.

[0260] The following describes the logic for detecting gas leaks in cooling mode.

[0261] In some embodiments, if the duration of a state in which the high pressure difference is greater than or equal to a first pressure difference threshold and the exhaust temperature difference is greater than or equal to a first temperature difference threshold is longer than a first target duration, the gas heat pump air conditioner is controlled to shut down and a first-level leakage risk is reported, indicating that the gas heat pump air conditioner has a refrigerant leak.

[0262] In some embodiments, if the duration of a state in which the high pressure difference is less than a first pressure difference threshold and greater than a second pressure difference threshold and the exhaust temperature difference is greater than or equal to a first temperature difference threshold is longer than a second target duration, a leakage risk area is reported.

[0263] In some embodiments, if the high-pressure difference is less than or equal to a second pressure difference threshold and the exhaust temperature difference is greater than or equal to a first temperature difference threshold, the gas heat pump air conditioner is determined to be in a non-leaking state.

[0264] In some embodiments, if the duration of the state in which the high pressure difference is greater than the first pressure difference threshold and the exhaust temperature difference is less than the first temperature difference threshold is longer than the first target duration, the gas heat pump air conditioner is controlled to shut down and a first-level leakage risk is reported, indicating that the gas heat pump air conditioner has a refrigerant leak.

[0265] In some embodiments, if the duration of a state in which the high pressure difference is less than a first pressure difference threshold and greater than a second pressure difference threshold and the exhaust temperature difference is less than a first temperature difference threshold is longer than a second target duration, a leakage risk area is reported.

[0266] In some embodiments, if the high pressure difference is determined to be less than or equal to a second pressure difference threshold and the exhaust temperature difference is less than a first temperature difference threshold, the gas heat pump air conditioner is determined to be in a non-leaking state.

[0267] Taking a first pressure difference threshold of 5, a second pressure difference threshold of 2, a first temperature difference threshold of 10℃, a first target duration of 15min, and a second target duration of 60min as an example.

[0268] In cooling mode, the leakage warning judgment logic is as follows:

[0269] If TPs-TP≥10℃ and HP-HPs≥5, and this condition is accumulated for 15 minutes, a Level 1 risk report will be issued for shutdown, indicating that refrigerant leakage has occurred.

[0270] If TPs-TP≥10℃ and 2<HP-HPs<5, and this condition is accumulated for 60 minutes without shutting down, a risk zone will be reported, and a pipeline inspection will be requested.

[0271] When TPs-TP≥10℃ and HP-HPs≤2, this is a normal state and the system is operating normally.

[0272] If TPs-TP < 10℃ and HP-HPs > 5, and this condition persists for 15 minutes, a Level 1 risk warning will be issued for shutdown, indicating a refrigerant leak.

[0273] If TPs-TP < 10℃ and 2 < HP-HPs < 5, and this condition persists for 60 minutes without shutting down, a risk zone report will be issued, prompting a check of the pipeline.

[0274] If TPs-TP < 10℃ and HP-HPs ≤ 2, this is a normal state and the system is operating normally.

[0275] Among them, TPs-TP represents the exhaust temperature difference, and HP-HPs represents the high-pressure difference.

[0276] The following describes the logic for detecting gas leaks in heating mode.

[0277] In some embodiments, if the duration of a state in which the high pressure difference is greater than or equal to a third pressure difference threshold and the exhaust temperature difference is greater than or equal to a second temperature difference threshold is longer than a third target duration, the gas heat pump air conditioner is controlled to shut down and a first-level leakage risk is reported, indicating that the gas heat pump air conditioner has a refrigerant leak.

[0278] In some embodiments, if the duration of a state in which the high pressure difference is less than a third pressure difference threshold and greater than a fourth pressure difference threshold and the exhaust temperature difference is greater than or equal to a second temperature difference threshold is longer than a fourth target duration, a leakage risk area is reported.

[0279] In some embodiments, the gas heat pump air conditioner is determined to be in a non-leaking state when the high pressure difference is less than or equal to a fourth pressure difference threshold and the exhaust temperature difference is greater than or equal to a second temperature difference threshold.

[0280] In some embodiments, if the duration of the state in which the high pressure difference is greater than the third pressure difference threshold and the exhaust temperature difference is less than the second temperature difference threshold is longer than the third target duration, the gas heat pump air conditioner is controlled to shut down and a first-level leakage risk is reported, indicating that the gas heat pump air conditioner has a refrigerant leak.

[0281] In some embodiments, if the duration of a state in which the high pressure difference is less than a third pressure difference threshold and greater than a fourth pressure difference threshold and the exhaust temperature difference is less than a second temperature difference threshold is longer than a fourth target duration, a leakage risk area is reported.

[0282] In some embodiments, the gas heat pump air conditioner is determined to be in a non-leaking state when the high pressure difference is determined to be less than or equal to a fourth pressure difference threshold and the exhaust temperature difference is less than a second temperature difference threshold.

[0283] Taking a third pressure difference threshold of 6, a fourth pressure difference threshold of 3, a second temperature difference threshold of 12℃, a first target duration of 15min, and a second target duration of 60min as an example.

[0284] In heating mode, the leakage warning judgment logic is as follows:

[0285] If TPs-TP≥12℃ and HP-HPs≥6, and this condition is accumulated for 15 minutes, a Level 1 risk report will be issued for shutdown, indicating that refrigerant leakage has occurred.

[0286] If TPs-TP≥12℃ and 3<HP-HPs<6, and this condition persists for 60 minutes without shutting down, a risk zone will be reported, and a pipeline inspection will be requested.

[0287] When TPs-TP≥12℃ and HP-HPs≤3, this is a normal state and the system is operating normally.

[0288] If TPs-TP < 12℃ and HP-HPs > 6, and this condition persists for 15 minutes, a Level 1 risk warning will be issued for shutdown, indicating a refrigerant leak.

[0289] If TPs-TP < 12℃ and 3 < HP-HPs < 6, and this condition persists for 60 minutes without shutting down, a risk zone report will be issued, prompting a check of the pipeline.

[0290] If TPs-TP < 12℃ and HP-HPs ≤ 3, this is a normal state and the system is operating normally.

[0291] Among them, TPs-TP represents the exhaust temperature difference, and HP-HPs represents the high-pressure difference.

[0292] This application embodiment compares and calculates the operating status parameters of the gas heat pump air conditioning unit to determine the unit's air intake status in real time, thereby confirming whether there is a gas leak. It then provides early warning and control, and promptly shuts down the unit for protection and notifies the user of the risks when a leak occurs, thus taking safety precautions. The detection is timely, the response is rapid, and the reaction is more objective.

[0293] Compared to gas leak detection technologies, this method does not require the installation of additional gas detection devices, resulting in lower detection costs. It also avoids the risks associated with improper installation or malfunction of detection devices, making it more reliable.

[0294] The gas leak detection method provided in this application can be executed by a gas leak detection device. This application uses a gas leak detection device to execute the gas leak detection method as an example to illustrate the gas leak detection device provided in this application.

[0295] This application also provides a gas leak detection device, which is applied to a gas heat pump air conditioner that is operating in a target temperature control mode.

[0296] like Figure 3 As shown, the gas leak detection device includes:

[0297] The acquisition module 310 is used to acquire the current high pressure and current exhaust temperature of the gas heat pump air conditioner, and to acquire the target high pressure and target exhaust temperature of the gas heat pump air conditioner under the target temperature control mode.

[0298] The first processing module 320 is used to determine the high pressure difference based on the current high pressure and the target high pressure, and to determine the exhaust temperature difference based on the current exhaust temperature and the target exhaust temperature.

[0299] The second processing module 330 is used to determine the gas leakage status of the gas heat pump air conditioner based on the high pressure difference and the exhaust temperature difference.

[0300] According to the gas leak detection device provided in the embodiments of this application, by real-time detection of the high pressure and exhaust temperature of the gas heat pump air conditioner, and comparison with the preset target high pressure and target exhaust temperature, the degree of deviation of the two state parameters is determined, and it is determined whether there is a gas leak in the gas heat pump air conditioner. This helps to make early warnings and protective actions, and improve the safety of using the gas heat pump air conditioner.

[0301] In some embodiments, the acquisition module 310 is used to acquire the current ambient temperature and indoor unit opening capacity value of the gas heat pump air conditioner;

[0302] Based on the current ambient temperature, the indoor unit's operating capacity, and the current high-pressure, determine the target high-pressure and target exhaust temperature.

[0303] In some embodiments, the target temperature control mode is a cooling mode, and the acquisition module 310 is used to apply the formula when it is determined that the current ambient temperature is greater than or equal to a first temperature threshold.

[0304] HP=30+[(TS / TC)*(RFs / 840)*a+(RYs / 74)*(BF / QF)*5]

[0305] Determine the target high pressure, where BF≥50%, a=0.7; BF<50%, a=0.3;

[0306] Alternatively, if the current ambient temperature is determined to be lower than the first temperature threshold, and the indoor unit's operating capacity is greater than or equal to the target capacity threshold, the formula can be applied.

[0307] HP=30-[(TS / TC)*(RFs / 840)*0.7+(RYs / 74)*(BF / QF)*2.5]

[0308] Determine the target high pressure;

[0309] Alternatively, if the current ambient temperature is determined to be lower than the first temperature threshold, and the indoor unit's operating capacity is lower than the target capacity threshold, then the formula can be applied.

[0310] HP=22-[(TS / TC)*(RFs / 840)*0.7+(74 / RYs)*(BF / QF)*2.5]

[0311] Determine the target high pressure;

[0312] and,

[0313] When the current ambient temperature is determined to be greater than or equal to the first temperature threshold, and the indoor unit's operating capacity is greater than or equal to the target capacity threshold, the formula is applied.

[0314] TP=90+(RYs / 74)*(HPs / 30)*(QF / BF)*(TS / TC)

[0315] Determine the target exhaust temperature;

[0316] Alternatively, if the current ambient temperature is determined to be greater than or equal to a first temperature threshold, and the indoor unit's operating capacity is less than the target capacity threshold, then the formula can be applied.

[0317] TP=90-(RYs / 74)*(HPs / 30)*(QF / BF)*(TS / TC)

[0318] Determine the target exhaust temperature;

[0319] Alternatively, if the current ambient temperature is determined to be lower than the first temperature threshold, and the indoor unit's operating capacity is greater than or equal to the target capacity threshold, the formula can be applied.

[0320] TP=76+(RYs / 74)*(HPs / 30)*(QF / BF)*(TC / TS)

[0321] Determine the target exhaust temperature;

[0322] Alternatively, if the current ambient temperature is determined to be lower than the first temperature threshold, and the indoor unit's operating capacity is lower than the target capacity threshold, then the formula can be applied.

[0323] TP=50-(RYs / 74)*(HPs / 30)*(QF / BF)*(TC / TS)

[0324] Determine the target exhaust temperature;

[0325] Where HP is the target high pressure, TP is the target exhaust temperature, TS is the current ambient temperature, TC is the standard operating dry bulb temperature in cooling mode, RFs is the current speed of the outdoor fan in cooling mode, RYs is the current speed of the compressor in cooling mode, BF is the indoor unit capacity value, QF is the total indoor unit capacity value of the gas heat pump air conditioner, and HPs is the current high pressure.

[0326] In some embodiments, the target temperature control mode is a heating mode, and the acquisition module 310 is used to apply the formula when it is determined that the current ambient temperature is greater than or equal to a second temperature threshold and the indoor unit's operating capacity value is greater than or equal to a target capacity value threshold.

[0327] HP=22+(TS / TH)*(RFs / 900)*1.2+(RYs / 82)*(QF / BF)*2

[0328] Determine the target high pressure;

[0329] Alternatively, if the current ambient temperature is determined to be greater than or equal to the second temperature threshold, and the indoor unit's operating capacity is less than the target capacity threshold, then the formula can be applied.

[0330] HP=22+(TS / TH)*(RFs / 900)*1.2+(RYs / 82)*(QF / BF)*1.4

[0331] Determine the target high pressure;

[0332] Alternatively, if the current ambient temperature is determined to be less than the second temperature threshold and greater than or equal to the third temperature threshold, the formula can be applied.

[0333] HP=17+(|TS| / TH)*(RFs / 900)*0.8+(RYs / 82)*(QF / BF)*2

[0334] Determine the target high pressure; the third temperature threshold is less than the second temperature threshold.

[0335] Alternatively, if the current ambient temperature is determined to be lower than the third temperature threshold, and the indoor unit's operating capacity is greater than or equal to the target capacity threshold, then the formula can be applied.

[0336] HP=17+(|TS|-7 / TH)*(RFs / 900)*0.8+(RYs / 82)*(QF / BF)*1

[0337] Determine the target high pressure;

[0338] Alternatively, if the current ambient temperature is determined to be lower than the third temperature threshold, and the indoor unit's operating capacity is lower than the target capacity threshold, then the formula can be applied.

[0339] HP=17+(|TS|-7 / TH)*(RFs / 900)*0.8+(RYs / 82)*(QF / BF)*0.6

[0340] Determine the target high pressure;

[0341] and,

[0342] When the current ambient temperature is determined to be greater than or equal to the fourth temperature threshold, the formula is applied.

[0343] TP=72-(RYs / 82)*(HPs / 22)*(QF / BF)

[0344] Determine the target exhaust temperature; the fourth temperature threshold is greater than the second temperature threshold.

[0345] Alternatively, if the current ambient temperature is determined to be less than the fourth temperature threshold and greater than or equal to the second temperature threshold, and the indoor unit's operating capacity is greater than or equal to the target capacity threshold, then the formula can be applied.

[0346] TP=80+(RYs / 82)*(HPs / 22)*(QF / BF)

[0347] Determine the target exhaust temperature;

[0348] Alternatively, if the current ambient temperature is determined to be less than the fourth temperature threshold and greater than or equal to the second temperature threshold, and the indoor unit's operating capacity is less than the target capacity threshold, then the formula can be applied.

[0349] TP=68+(RYs / 82)*(HPs / 22)*(QF / BF)

[0350] Determine the target exhaust temperature;

[0351] Alternatively, if the current ambient temperature is determined to be less than the second temperature threshold and greater than or equal to the third temperature threshold, the formula can be applied.

[0352] TP=77-((TS-7) / 7)*(RYs / 82)*(22 / HPs)*(QF / BF)

[0353] Determine the target exhaust temperature;

[0354] Alternatively, if the current ambient temperature is determined to be less than the third temperature threshold, the formula can be applied.

[0355] TP=75-((TS-7) / 7)*(RYs / 82)*(22 / HPs)*(QF / BF)

[0356] Determine the target exhaust temperature;

[0357] Where HP is the target high pressure, TP is the target exhaust temperature, TS is the current ambient temperature, TH is the standard operating dry bulb temperature in heating mode, RFs is the current speed of the outdoor fan in heating mode, RYs is the current speed of the compressor in heating mode, BF is the indoor unit capacity value, QF is the total indoor unit capacity value of the gas heat pump air conditioner, and HPs is the current high pressure.

[0358] In some embodiments, the target temperature control mode is a cooling mode. The second processing module 330 is used to control the gas heat pump air conditioner to shut down and report a first-level leakage risk, indicating that the gas heat pump air conditioner has a refrigerant leak, when the duration of the state in which the high pressure difference is greater than or equal to the first pressure difference threshold and the exhaust temperature difference is greater than or equal to the first temperature difference threshold is longer than the first target duration.

[0359] Alternatively, if the duration of a state in which the high pressure difference is less than the first pressure difference threshold and greater than the second pressure difference threshold and the exhaust temperature difference is greater than or equal to the first temperature difference threshold is longer than the second target duration, the leakage risk area shall be reported.

[0360] Alternatively, if the high pressure difference is less than or equal to the second pressure difference threshold and the exhaust temperature difference is greater than or equal to the first temperature difference threshold, the gas heat pump air conditioner is determined to be in a leak-free state.

[0361] Alternatively, if the duration of the state where the high pressure difference is greater than the first pressure difference threshold and the exhaust temperature difference is less than the first temperature difference threshold is longer than the first target duration, the gas heat pump air conditioner is shut down and a first-level leakage risk is reported, indicating that the gas heat pump air conditioner has a refrigerant leak.

[0362] Alternatively, if the duration of the state where the high pressure difference is less than the first pressure difference threshold and greater than the second pressure difference threshold and the exhaust temperature difference is less than the first temperature difference threshold is longer than the second target duration, the leakage risk area shall be reported.

[0363] Alternatively, if the high-pressure difference is less than or equal to the second pressure difference threshold and the exhaust temperature difference is less than the first temperature difference threshold, the gas heat pump air conditioner is determined to be in a non-leaking state.

[0364] In some embodiments, the target temperature control mode is a heating mode. The second processing module 330 is used to control the gas heat pump air conditioner to shut down and report a first-level leakage risk, indicating that the gas heat pump air conditioner has a refrigerant leak, when the duration of the state in which the high pressure difference is greater than or equal to the third pressure difference threshold and the exhaust temperature difference is greater than or equal to the second temperature difference threshold is longer than the third target duration.

[0365] Alternatively, if the duration of a state in which the high pressure difference is less than the third pressure difference threshold and greater than the fourth pressure difference threshold and the exhaust temperature difference is greater than or equal to the second temperature difference threshold is longer than the fourth target duration, the leakage risk area shall be reported.

[0366] Alternatively, if the high pressure difference is less than or equal to the fourth pressure difference threshold and the exhaust temperature difference is greater than or equal to the second temperature difference threshold, the gas heat pump air conditioner is determined to be in a leak-free state.

[0367] Alternatively, if the duration of the state where the high pressure difference is greater than the third pressure difference threshold and the exhaust temperature difference is less than the second temperature difference threshold is longer than the third target duration, the gas heat pump air conditioner is shut down and a first-level leakage risk is reported, indicating that the gas heat pump air conditioner has a refrigerant leak.

[0368] Alternatively, if the duration of a state in which the high pressure difference is less than the third pressure difference threshold and greater than the fourth pressure difference threshold and the exhaust temperature difference is less than the second temperature difference threshold is longer than the fourth target duration, the leakage risk area shall be reported.

[0369] Alternatively, if the high-pressure difference is less than or equal to the fourth pressure difference threshold and the exhaust temperature difference is less than the second temperature difference threshold, the gas heat pump air conditioner is determined to be in a leak-free state.

[0370] In some embodiments, the acquisition module 310 is used to acquire the target high pressure and the target exhaust temperature according to the target time interval.

[0371] The gas leak detection device in this application embodiment can be an electronic device or a component of an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal or other devices besides a terminal. For example, the electronic device can be a mobile phone, tablet computer, laptop computer, PDA, in-vehicle electronic device, mobile internet device (MID), augmented reality (AR) / virtual reality (VR) device, robot, wearable device, ultra-mobile personal computer (UMPC), netbook, or personal digital assistant (PDA), etc. It can also be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM, or self-service machine, etc. This application embodiment does not specifically limit the device.

[0372] The gas leak detection device in this application embodiment can be a device with an operating system. This operating system can be Android, iOS, or other possible operating systems; this application embodiment does not specifically limit it.

[0373] The gas leak detection device provided in this application embodiment can achieve... Figure 1 The various processes implemented in the method implementation examples will not be described again here to avoid repetition.

[0374] In some embodiments, such as Figure 4As shown, this application embodiment also provides an electronic device 400, including a processor 401, a memory 402, and a computer program stored in the memory 402 and executable on the processor 401. When the program is executed by the processor 401, it implements the various processes of the above-described gas leak detection method embodiment and achieves the same technical effect. To avoid repetition, it will not be described again here.

[0375] It should be noted that the electronic devices in the embodiments of this application include the mobile electronic devices and non-mobile electronic devices described above.

[0376] This application also provides a non-transitory computer-readable storage medium storing a computer program. When the computer program is executed by a processor, it implements the various processes of the above-described gas leak detection method embodiments and achieves the same technical effect. To avoid repetition, it will not be described again here.

[0377] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0378] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the above-described gas leak detection method.

[0379] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0380] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described gas leak detection method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0381] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0382] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0383] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0384] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

[0385] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0386] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A method of detecting a gas leak, characterized by, The method is applied to a gas heat pump air conditioner, the gas heat pump air conditioner runs in a target temperature control mode, and the method comprises: obtaining a current high-pressure pressure and a current exhaust temperature of the gas heat pump air conditioner, and obtaining a target high-pressure pressure and a target exhaust temperature of the gas heat pump air conditioner in the target temperature control mode; determining a high-pressure pressure difference value based on the current high-pressure pressure and the target high-pressure pressure, and determining an exhaust temperature difference value based on the current exhaust temperature and the target exhaust temperature; determining a gas leakage state of the gas heat pump air conditioner based on the high-pressure pressure difference value and the exhaust temperature difference value; the method comprises: obtaining a current environment temperature and an opening indoor unit capacity value of the gas heat pump air conditioner; determining a corresponding calculation formula based on the current environment temperature, the opening indoor unit capacity value and the current high-pressure pressure, and calculating the target high-pressure pressure and the target exhaust temperature by bringing in corresponding parameters; the target temperature control mode is a refrigeration mode, and the method comprises: in a case where it is determined that the current environment temperature is greater than or equal to a first temperature threshold, applying a formula HP = 30 + [(TS / TC)*(RFs / 840)*a + (RYs / 74)*(BF / QF)*5] to determine the target high-pressure pressure, wherein BF≥50%, a=0.7; BF<50%, a=0.3; or, in a case where it is determined that the current environment temperature is less than the first temperature threshold and the opening indoor unit capacity value is greater than or equal to a target capacity value threshold, applying a formula HP = 30 - [(TS / TC)*(RFs / 840)*0.7 + (RYs / 74)*(BF / QF)*2.5] to determine the target high-pressure pressure; or, in a case where it is determined that the current environment temperature is less than the first temperature threshold and the opening indoor unit capacity value is less than the target capacity value threshold, applying a formula HP = 22 - [(TS / TC)*(RFs / 840)*0.7 + (74 / RYs)*(BF / QF)*2.5] to determine the target high-pressure pressure; and in a case where it is determined that the current environment temperature is greater than or equal to the first temperature threshold and the opening indoor unit capacity value is greater than or equal to the target capacity value threshold, applying a formula TP = 90 + (RYs / 74)*(HPs / 30)*(QF / BF)*(TS / TC) to determine the target exhaust temperature; or, in a case where it is determined that the current environment temperature is greater than or equal to the first temperature threshold and the opening indoor unit capacity value is less than the target capacity value threshold, applying a formula TP = 90 - (RYs / 74)*(HPs / 30)*(QF / BF)*(TS / TC) to determine the target exhaust temperature. ​ Or, in a case where it is determined that the current ambient temperature is less than the first temperature threshold and the open indoor unit capacity value is greater than or equal to the target capacity value threshold, a formula TP=76+(RYs / 74)*(HPs / 30)*(QF / BF)*(TC / TS) is applied to determine the target exhaust temperature. TP=76+(RYs / 74)*(HPs / 30)*(QF / BF)*(TC / TS) determines the target exhaust temperature. Or, in a case where it is determined that the current ambient temperature is less than the first temperature threshold and the open indoor unit capacity value is less than the target capacity value threshold, a formula TP=50-(RYs / 74)*(HPs / 30)*(QF / BF)*(TC / TS) is applied to determine the target exhaust temperature. TP=50-(RYs / 74)*(HPs / 30)*(QF / BF)*(TC / TS) determines the target exhaust temperature. Wherein, HP is the target high pressure, TP is the target exhaust temperature, TS is the current ambient temperature, TC is the standard operating condition dry-bulb temperature of the refrigeration mode, RFs is the current speed of the outdoor side fan of the refrigeration mode, RYs is the current speed of the compressor of the refrigeration mode, BF is the open indoor unit capacity value, QF is the total indoor unit capacity value of the gas heat pump air conditioner, and HPs is the current high pressure.

2. The gas leak detection method of claim 1, wherein, The target temperature control mode is the heating mode, and the target high pressure and the target exhaust temperature are determined based on the current ambient temperature, the open indoor unit capacity value, and the current high pressure, including: In a case where it is determined that the current ambient temperature is greater than or equal to a second temperature threshold and the open indoor unit capacity value is greater than or equal to a target capacity value threshold, a formula HP=22+(TS / TH)*(RFs / 900)*1.2+(RYs / 82)*(QF / BF)*2 is applied to determine the target high pressure. HP=22+(TS / TH)*(RFs / 900)*1.2+(RYs / 82)*(QF / BF)*2 determines the target high pressure. Or, in a case where it is determined that the current ambient temperature is greater than or equal to the second temperature threshold and the open indoor unit capacity value is less than the target capacity value threshold, a formula HP=22+(TS / TH)*(RFs / 900)*1.2+(RYs / 82)*(QF / BF)*1.4 is applied to determine the target high pressure. HP=22+(TS / TH)*(RFs / 900)*1.2+(RYs / 82)*(QF / BF)*1.4 determines the target high pressure. Or, in a case where it is determined that the current ambient temperature is less than the second temperature threshold and greater than or equal to a third temperature threshold, a formula HP=17+(|TS| / TH)*(RFs / 900)*0.8+(RYs / 82)*(QF / BF)*2 is applied to determine the target high pressure, and the third temperature threshold is less than the second temperature threshold. Or, in a case where it is determined that the current ambient temperature is less than the third temperature threshold and the open indoor unit capacity value is greater than or equal to the target capacity value threshold, a formula HP=17+(|TS|-7 / TH)*(RFs / 900)*0.8+(RYs / 82)*(QF / BF)*1 is applied to determine the target high pressure. HP=17+(|TS|-7 / TH)*(RFs / 900)*0.8+(RYs / 82)*(QF / BF)*1 determines the target high pressure. Or, in a case where it is determined that the current ambient temperature is less than the third temperature threshold and the open indoor unit capacity value is less than the target capacity value threshold, a formula HP=17+(|TS|-7 / TH)*(RFs / 900)*0.8+(RYs / 82)*(QF / BF)*1.2 is applied to determine the target high pressure. ​ ​ HP = 17 + (|TS| - 7 / TH) * (RFs / 900) * 0.8 + (RYs / 82) * (QF / BF) * 0.6 determining the target high-pressure pressure; and, in a case where it is determined that the current ambient temperature is greater than or equal to a fourth temperature threshold value, which is greater than the second temperature threshold value, applying a formula TP = 72 - (RYs / 82) * (HPs / 22) * (QF / BF) determining the target exhaust temperature; or, in a case where it is determined that the current ambient temperature is less than the fourth temperature threshold value and greater than or equal to the second temperature threshold value, and the open indoor unit capacity value is greater than or equal to the target capacity value threshold value, applying a formula TP = 80 + (RYs / 82) * (HPs / 22) * (QF / BF) determining the target exhaust temperature; or, in a case where it is determined that the current ambient temperature is less than the fourth temperature threshold value and greater than or equal to the second temperature threshold value, and the open indoor unit capacity value is less than the target capacity value threshold value, applying a formula TP = 68 + (RYs / 82) * (HPs / 22) * (QF / BF) determining the target exhaust temperature; or, in a case where it is determined that the current ambient temperature is less than the second temperature threshold value and greater than or equal to a third temperature threshold value, applying a formula TP = 77 - ((TS - 7) / 7) * (RYs / 82) * (22 / HPs) * (QF / BF) determining the target exhaust temperature; or, in a case where it is determined that the current ambient temperature is less than the third temperature threshold value, applying a formula TP = 75 - ((TS - 7) / 7) * (RYs / 82) * (22 / HPs) * (QF / BF) determining the target exhaust temperature; wherein HP is the target high-pressure pressure, TP is the target exhaust temperature, TS is the current ambient temperature, TH is a standard operating dry-bulb temperature of the heating mode, RFs is a current rotational speed of an outdoor-side fan of the heating mode, RYs is a current rotational speed of a compressor of the heating mode, BF is an open indoor unit capacity value, QF is a total indoor unit capacity value of the gas heat pump air conditioner, and HPs is the current high-pressure pressure.

3. The gas leak detection method of claim 1, wherein, the target temperature control mode is a cooling mode, and the determining, based on the high-pressure pressure difference value and the exhaust temperature difference value, of the gas leakage state of the gas heat pump air conditioner comprises: in a case where it is determined that the high-pressure pressure difference value is greater than or equal to a first pressure difference threshold value and the exhaust temperature difference value is greater than or equal to a first temperature difference threshold value for a state duration greater than a first target duration, controlling the gas heat pump air conditioner to shut down and reporting a first-level leakage risk, and the gas heat pump air conditioner has a refrigerant leakage; or, in a case where it is determined that the high-pressure pressure difference value is less than the first pressure difference threshold value and greater than a second pressure difference threshold value and the exhaust temperature difference value is greater than or equal to the first temperature difference threshold value for a state duration greater than a second target duration, reporting a leakage risk area; Or, in a case where it is determined that the high-pressure pressure difference value is less than or equal to the second pressure difference threshold value and the exhaust temperature difference value is greater than or equal to the first temperature difference threshold value, it is determined that the gas heat pump air conditioner is in a non-leakage state; Or, in a case where it is determined that the high-pressure pressure difference value is greater than the first pressure difference threshold value and the exhaust temperature difference value is less than the first temperature difference threshold value for a time length greater than the first target time length, the gas heat pump air conditioner is controlled to stop and a first leakage risk is reported, and the gas heat pump air conditioner has refrigerant leakage; Or, in a case where it is determined that the high-pressure pressure difference value is less than the first pressure difference threshold value and greater than the second pressure difference threshold value and the exhaust temperature difference value is less than the first temperature difference threshold value for a time length greater than the second target time length, a leakage risk area is reported; Or, in a case where it is determined that the high-pressure pressure difference value is less than or equal to the second pressure difference threshold value and the exhaust temperature difference value is less than the first temperature difference threshold value, it is determined that the gas heat pump air conditioner is in a non-leakage state.

4. The gas leak detection method of claim 1, wherein, The target temperature control mode is a heating mode, and the gas leakage state of the gas heat pump air conditioner is determined based on the high-pressure pressure difference value and the exhaust temperature difference value, including: In a case where it is determined that the high-pressure pressure difference value is greater than or equal to a third pressure difference threshold value and the exhaust temperature difference value is greater than or equal to a second temperature difference threshold value for a time length greater than a third target time length, the gas heat pump air conditioner is controlled to stop and a first leakage risk is reported, and the gas heat pump air conditioner has refrigerant leakage; Or, in a case where it is determined that the high-pressure pressure difference value is less than the third pressure difference threshold value and greater than a fourth pressure difference threshold value and the exhaust temperature difference value is greater than or equal to the second temperature difference threshold value for a time length greater than a fourth target time length, a leakage risk area is reported; Or, in a case where it is determined that the high-pressure pressure difference value is less than or equal to the fourth pressure difference threshold value and the exhaust temperature difference value is greater than or equal to the second temperature difference threshold value, it is determined that the gas heat pump air conditioner is in a non-leakage state; Or, in a case where it is determined that the high-pressure pressure difference value is greater than the third pressure difference threshold value and the exhaust temperature difference value is less than the second temperature difference threshold value for a time length greater than the third target time length, the gas heat pump air conditioner is controlled to stop and a first leakage risk is reported, and the gas heat pump air conditioner has refrigerant leakage; Or, in a case where it is determined that the high-pressure pressure difference value is less than the third pressure difference threshold value and greater than the fourth pressure difference threshold value and the exhaust temperature difference value is less than the second temperature difference threshold value for a time length greater than the fourth target time length, a leakage risk area is reported; Or, in a case where it is determined that the high-pressure pressure difference value is less than or equal to the fourth pressure difference threshold value and the exhaust temperature difference value is less than the second temperature difference threshold value, it is determined that the gas heat pump air conditioner is in a non-leakage state.

5. The gas leak detection method according to any one of claims 1 to 4, characterized in that, The target high-pressure pressure and the target exhaust temperature of the gas heat pump air conditioner in the target temperature control mode are obtained, including: The target high-pressure pressure and the target exhaust temperature are obtained at a target time interval.

6. A gas leak detection apparatus characterized by, The device is used to execute the gas leakage detection method as claimed in any one of claims 1-5, and is applied to a gas heat pump air conditioner, the gas heat pump air conditioner is operated in a target temperature control mode, and the device comprises: an acquisition module, configured to acquire a current high-pressure pressure and a current exhaust temperature of the gas heat pump air conditioner, and acquire a target high-pressure pressure and a target exhaust temperature of the gas heat pump air conditioner in the target temperature control mode; a first processing module, configured to determine a high-pressure pressure difference value based on the current high-pressure pressure and the target high-pressure pressure, and determine an exhaust temperature difference value based on the current exhaust temperature and the target exhaust temperature; a second processing module, configured to determine a gas leakage state of the gas heat pump air conditioner based on the high-pressure pressure difference value and the exhaust temperature difference value; the target high-pressure pressure and the target exhaust temperature of the gas heat pump air conditioner in the target temperature control mode are acquired by: acquiring a current environment temperature and an opening indoor unit capacity value of the gas heat pump air conditioner; determining a corresponding calculation formula based on the current environment temperature, the opening indoor unit capacity value and the current high-pressure pressure, and calculating the target high-pressure pressure and the target exhaust temperature by inputting corresponding parameters.

7. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, The processor executes the program to implement the gas leakage detection method as claimed in any one of claims 1-5.

8. A non-transitory computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to implement the gas leakage detection method as claimed in any one of claims 1-5.

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