Air conditioner shell, air conditioner and control method of air conditioner

Abstract

The invention discloses an air conditioner shell, an air conditioner and a control method of the air conditioner shell. The air conditioner shell comprises a shell body, and an air collecting cavity used for collecting refrigerants is formed in the inner side of the shell body; the refrigerant detection assembly comprises an air extracting pump and a detection part, the air extracting pump is arranged on the shell body and communicates with the air collecting cavity, and the detection part is arranged on the shell body and connected with the air extracting pump; wherein the detection part is used for detecting a refrigerant, and the air extracting pump is used for extracting the refrigerant in the air collecting cavity and conveying the refrigerant to the detection part for contact detection of the detection part. According to the air conditioner shell, leaked refrigerants are collected through the air collecting cavity formed in the inner side of the shell body, the air extracting pump and the detection part are arranged on the shell body, the refrigerants in the air collecting cavity are extracted through the air extracting pump and conveyed to the detection part for contact detection, and therefore when the refrigerants leak, the detection part can detect the refrigerants; the leaked refrigerant can be in contact with the detection piece more quickly and effectively so as to complete detection, and the use safety of the air conditioner is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular to an air conditioner housing, an air conditioner and a control method thereof. Background Art

[0002] As more and more air conditioners are used in homes and work environments, air conditioners are also switching to refrigerants with better environmental protection effects in consideration of global warming and other issues. In the current air conditioner market, based on market demand and air conditioner design requirements, many air conditioners produced by air conditioner manufacturers use refrigerants with certain flammability such as R290. Therefore, in the case of flammable refrigerant leakage, refrigerant detection is crucial. The current common flammable refrigerant detection scheme is to determine whether indoor refrigerant leakage occurs by setting a refrigerant sensor in the indoor unit. When the location of the refrigerant sensor is far away from the refrigerant leakage location or the refrigerant leakage location is in a leeward position relative to the refrigerant sensor, it is difficult for the leaked refrigerant to reach the vicinity of the sensor, resulting in the inability to effectively detect the leaked refrigerant. There are still considerable safety hazards in actual applications. Summary of the invention

[0003] The embodiments of the present invention provide an air conditioner housing, an air conditioner and a control method thereof, which solve the problem that the existing refrigerant detection method cannot effectively detect refrigerant leakage.

[0004] In a first aspect, an embodiment of the present invention provides an air conditioner housing, comprising:

[0005] The shell body has a gas collecting cavity formed inside thereof for collecting the refrigerant;

[0006] A refrigerant detection assembly, comprising an air extraction pump and a detection component, wherein the air extraction pump is disposed on the shell body and communicates with the gas collecting cavity, and the detection component is disposed on the shell body and connected to the air extraction pump;

[0007] The detection component is used to detect the refrigerant, and the vacuum pump is used to extract the refrigerant in the gas collecting cavity and transport it to the detection component for contact detection.

[0008] In the air conditioner casing provided by the embodiment of the present invention, the casing body is further formed with an air gathering cavity, the air extraction pump is connected to the air gathering cavity, and the detection element is accommodated in the air gathering cavity.

[0009] In the air-conditioning casing provided in an embodiment of the present invention, the refrigerant detection component also includes a drainage component, the drainage component includes a motor and a fan blade, the motor is fixed on the side wall of the air gathering cavity, the fan blade is connected to the motor and is adjacent to the detection component, wherein the motor is used to drive the fan blade to rotate to guide the refrigerant to flow toward the detection component.

[0010] In a second aspect, an embodiment of the present invention provides an air conditioner, comprising an evaporator and the air conditioner housing described in the first aspect, wherein the evaporator is disposed in the air conditioner housing and at least partially disposed in a gas collecting cavity of the air conditioner housing.

[0011] In the air conditioner provided by the embodiment of the present invention, at least one end of the evaporator is bent to form a bent tube body, and the bent tube body is accommodated in the gas collecting cavity.

[0012] In a third aspect, an embodiment of the present invention provides an air conditioner control method, which is applied to the air conditioner described in the second aspect above, and the method includes: controlling the detection component to detect the gas concentration in the gas collecting chamber to obtain a refrigerant detection result; and controlling the air guide plate to open and the crossflow fan blade to rotate in the opposite direction when the refrigerant detection result is a refrigerant leakage.

[0013] The embodiment of the present invention provides an air conditioner housing, an air conditioner and a control method thereof, wherein the air conditioner housing comprises a housing body and a refrigerant detection assembly; the housing body is formed with an air collecting cavity for collecting refrigerant on its inner side; the refrigerant detection assembly comprises an air pump and a detection member, the air pump is arranged on the housing body and connected to the air collecting cavity, the detection member is arranged on the housing body and connected to the air pump; wherein the detection member is used to detect the refrigerant, and the air pump is used to extract the refrigerant in the air collecting cavity and transport it to the detection member for contact detection. The air conditioner housing provided by the embodiment of the present application collects the leaked refrigerant through the air collecting cavity formed on the inner side of the housing body, and an air pump and a detection member are arranged on the housing body, and the refrigerant in the air collecting cavity is extracted and transported to the detection member for contact detection by the air pump, so that when the refrigerant leaks, the leaked refrigerant can contact the detection member more quickly and effectively to complete the detection, thereby improving the safety of the air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0015] Figure 1 A side sectional view of an air conditioner housing provided by an embodiment of the present invention;

[0016] Figure 2 for Figure 1 A magnified view of part A;

[0017] Figure 3 A side view of an air conditioner housing provided by an embodiment of the present invention;

[0018] Figure 4 A front view of an air conditioner provided by an embodiment of the present invention;

[0019] Figure 5 for Figure 4 A magnified view of part B;

[0020] Figure 6 A side view of an air conditioner provided by an embodiment of the present invention;

[0021] Figure 7 A schematic flow chart of the steps of the air conditioner control method provided by an embodiment of the present invention;

[0022] Figure 8 A schematic diagram of a sub-step flow chart of an air conditioner control method provided by an embodiment of the present invention;

[0023] Fig. 9 A schematic diagram of a sub-step flow chart of an air conditioner control method provided by an embodiment of the present invention;

[0024] Fig.10 A schematic diagram of a sub-step flow chart of an air conditioner control method provided by an embodiment of the present invention;

[0025] Fig.11 A schematic flow chart of the steps of the air conditioner control method provided by an embodiment of the present invention;

[0026] The reference numerals in the figures are:

[0027] 100, air conditioner casing; 10, casing body; 101, air collecting chamber; 102, air collecting chamber; 20, refrigerant detection assembly; 21, vacuum pump; 22, detection part; 30, drainage assembly; 31, motor; 32, fan blade; 200, air conditioner; 201, evaporator; 202, crossflow fan blade; 203, air guide plate. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] The directional terms mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inner", "outer", "side", etc., are only referenced to the directions of the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present invention, but are not used to limit the present invention. In addition, in the drawings, structures with similar or identical structures are represented by the same reference numerals.

[0030] Reference Figures 1 to 6 For details, please refer to Figures 1 to 3 , which shows an embodiment of the air-conditioning housing 100 provided by the present invention. The structure and working principle of the air-conditioning housing 100 are described in detail below in conjunction with the drawings of the specification. The air-conditioning housing 100 includes a housing body 10 and a refrigerant detection component 20; the housing body 10 has an air collecting cavity 101 formed on its inner side for collecting refrigerant; the refrigerant detection component 20 includes an air pump 21 and a detection component 22, the air pump 21 is arranged on the housing body 10 and connected to the air collecting cavity 101, and the detection component 22 is arranged on the housing body 10 and connected to the air pump 21; wherein, the detection component 22 is used to detect the refrigerant, and the air pump 21 is used to extract the refrigerant in the air collecting cavity 101 and transport it to the detection component 22 for contact detection.

[0031] In the specific implementation, please refer to Figures 4 to 6 The air conditioner housing 100 is a component of the housing of the inner unit of the air conditioner 200. The air conditioner housing 100 can be installed with various air conditioner components, such as the evaporator 201, the crossflow fan blades 202, the air guide plate 203, the controller and other components. Usually, the evaporator 201 installed inside the inner unit of the air conditioner 200 is designed as a copper tube. As a carrier of the refrigerant circulation, in order to meet the air conditioning refrigeration needs, the copper tube of the evaporator 201 is usually relatively weak. Due to the pressure of the refrigerant circulating inside the copper tube of the evaporator 201, under the action of the refrigerant pressure, the evaporator 201 will have the risk of copper tube rupture, resulting in refrigerant leakage. Therefore, in practical applications, refrigerant leakage detection is particularly important. In this embodiment, reference can be made to Figure 1The air conditioner casing 100 includes a casing body 10 and a refrigerant detection component 20. The casing body 10 is the main body of the air conditioner casing 100. A gas collecting chamber 101 for collecting refrigerant is formed on the inner side of the casing body 10. The gas collecting chamber 101 is mainly used to collect refrigerant leaked from the evaporator 201 of the air conditioner indoor unit. The gas collecting chamber 101 is a cavity structure and is usually designed on the inner side of the casing body 10 near the evaporator 201. For example, the gas collecting chamber 101 is formed on the inner side of the casing body 10 adjacent to both ends of the evaporator 201, so that when refrigerant leaks from the evaporator 201, the refrigerant can naturally diffuse into the gas collecting chamber 101. The refrigerant detection component 20 is arranged on the shell body 10. The refrigerant detection component 20 is mainly composed of two parts: an air pump 21 and a detection component 22. The air pump 21 is arranged on the shell body 10 and is connected to the gas collecting chamber 101 inside the shell body 10 through a pipeline. The air pump 21 is connected to the gas collecting chamber 101. Specifically, two ports are arranged on the air pump 21, one is an air inlet, and the other is an air outlet. The air inlet of the air pump 21 is connected to the gas collecting chamber 101 through a pipeline, and the air outlet is connected to the detection component 22 through a pipeline. The detection component 22 is specifically a gas sensor that can detect gas concentration. The air pump 21 and the detection component 22 are connected to the controller of the indoor unit of the air conditioner, and both operate under the control of the controller of the indoor unit of the air conditioner. When the refrigerant in the evaporator 201 leaks, the leaked refrigerant will spread to the gas collecting chamber 101, and the gas collecting chamber 101 will gather the leaked refrigerant. Then, the vacuum pump 21 extracts the gathered refrigerant in the gas collecting chamber 101 and transports it to the detection part 22, so that a large amount of refrigerant can fully contact the detection part 22, and the detection part 22 can detect the refrigerant. The detection part 22 detects the refrigerant specifically to detect the concentration information of the refrigerant. The controller determines the leakage of the refrigerant through the refrigerant concentration information detected by the detection part 22 and then takes corresponding actions, such as alarms. During the entire process from the leakage of the refrigerant to the contact detection with the detection part 22, the leaked refrigerant effectively and quickly contacts the detection part 22, and the detection part 22 can more effectively detect the leakage of the refrigerant. In actual applications, the safety of the air conditioner is greatly improved.

[0032] The air-conditioning casing of the present embodiment collects the leaked refrigerant through an air collecting cavity formed on the inner side of the casing body, and an exhaust pump and a detection component are arranged on the casing body. The exhaust pump extracts the refrigerant in the air collecting cavity and conveys it to the detection component for contact detection. When the refrigerant leaks, the leaked refrigerant can contact the detection component more quickly and effectively to complete the detection, thereby improving the safety of the air conditioner.

[0033] In one embodiment, referring to Figure 1The shell body 10 is also formed with a gas gathering cavity 102, the air pump 21 is connected to the gas gathering cavity 102, and the detection element 22 is accommodated in the gas gathering cavity 102. In a specific implementation, the shell body 10 is also formed with a gas gathering cavity 102, and the gas gathering cavity 102 can be formed at any position of the shell body 10, and can be formed on the inside or outside of the shell body 10. The gas gathering cavity 102 is an incompletely closed cavity structure, that is, gas can enter and exit the gas gathering cavity 102. The air outlet of the vacuum pump 21 is connected to the gas gathering chamber 102 through a pipeline. When the vacuum pump 21 is working, the gas in the gas gathering chamber 101 can be extracted and transported to the gas gathering chamber 102, and the detection component 22 is accommodated in the gas gathering chamber 102 as a whole. When refrigerant leakage occurs, the vacuum pump 21 extracts the gathered refrigerant in the gas gathering chamber 101 and transports it to the gas gathering chamber 102, so that the refrigerant fills the entire gas gathering chamber 102. The detection component 22 accommodated in the gas gathering chamber 102 can detect the refrigerant in the gas gathering chamber 102. Under the action of the gas gathering chamber 102, the interference of external gas on refrigerant detection is reduced, and the refrigerant detection is more accurate and efficient.

[0034] Further, refer to Figure 1 and Figure 2 , the refrigerant detection component 20 also includes a drainage component 30, the drainage component 30 includes a motor 31 and a fan blade 32, the motor 31 is fixed on the side wall of the gas gathering chamber 102, the fan blade 32 is connected to the motor 31 and is adjacent to the detection member 22, wherein the motor 31 is used to drive the fan blade 32 to rotate to guide the refrigerant to flow to the detection member 22. In a specific implementation, the refrigerant detection component 20 also includes a drainage component 30, the drainage component 30 is composed of a motor 31 and a fan blade 32, the motor 31 is fixed on the inner side wall of the gas gathering chamber 102 as a whole, and the fan blade 32 is connected to the drive shaft of the motor 31 and is adjacent to the detection member 22, the fan blade 32 is facing the detection member 22 as a whole, the motor 31 can drive the fan blade 32 to rotate, after the fan blade 32 rotates, the refrigerant in the gas gathering chamber 102 is blown to the detection member 22, guiding the refrigerant to flow to the detection member 22, and improving the detection efficiency of the detection member 22.

[0035] In one embodiment, an air conditioner 200 is provided, such as Figures 4 to 6As shown, the air conditioner 200 includes an evaporator 201 and the air conditioner housing 100 described in the above embodiment. In addition, the air conditioner 200 also includes internal components such as a controller, a crossflow fan blade 202, and a motor 31. The air conditioner housing 100 is the housing part of the air conditioner 200 internal unit, and is mainly used to support and protect the internal components of the air conditioner 200 internal unit. The evaporator 201 is installed in the air conditioner housing 100 and at least partially arranged in the air collecting cavity 101 of the air conditioner housing 100. The function of the evaporator 201 is to exchange heat between the low-temperature refrigerant gas and the outside air to achieve a refrigeration effect. The evaporator 201 is usually designed with a copper tube. In this embodiment, a part of the copper tube of the evaporator 201 is arranged in the air collecting cavity 101 of the air conditioner housing 100, and usually the weaker part of the copper tube of the evaporator 201 is arranged in the air collecting cavity 101, such as the bending part of the copper tube. In actual application, when the copper tube of the evaporator 201 ruptures and refrigerant leaks, the leaked refrigerant gathers in the gas collecting chamber 101. Under the action of the vacuum pump 21, the refrigerant gathered in the gas collecting chamber 101 is extracted and transported to the detection member 22. The leaked refrigerant effectively and quickly contacts the detection member 22, so that the detection member 22 effectively detects the refrigerant. The controller detects the refrigerant leakage through the detection member 22 and takes actions such as alarms, so that the user can quickly and effectively obtain the refrigerant leakage of the air conditioner 200. Among them, since the previous specification has made a detailed introduction to the specific structure and working principle of the air conditioner housing 100, it will not be repeated here for the sake of brevity of the specification.

[0036] Further, refer to Figure 4 At least one end of the evaporator 201 is bent to form a bent tube body (not shown), and the bent tube body is accommodated in the gas collecting chamber 101. In a specific implementation, the evaporator 201 is designed to be a copper tube, and the copper tubes at both ends of the evaporator 201 are bent to form a bent tube body, that is, the bent tube body is the bent copper tube part on the evaporator 201. Therefore, the bent tube body part of the evaporator 201 is relatively weak and is the most prone to rupture in the evaporator 201 pipeline. The refrigerant is easy to leak from the bent tube body. In this embodiment, the bent tube body at the end of the evaporator 201 is accommodated in the air collecting chamber 101 of the air-conditioning casing 100. When the weakest bent tube body of the evaporator 201 ruptures and causes refrigerant leakage, the leaked refrigerant will directly gather in the air collecting chamber 101. Under the action of the vacuum pump 21, the refrigerant gathered in the air collecting chamber 101 is quickly extracted and transported to the detection part 22. The leaked refrigerant can effectively contact the detection part 22 at the fastest speed. The detection part 22 effectively detects the refrigerant. The controller detects the refrigerant leakage through the detection part 22 and takes actions such as alarm. The user can quickly and effectively obtain the refrigerant leakage situation of the air conditioner 200.

[0037] The air conditioner in this embodiment, because it adopts the air conditioner housing provided by the present invention, can detect refrigerant leakage more quickly and effectively, and the safety of use is improved.

[0038] The present invention provides an air conditioner control method, which can be applied to the air conditioner described in the above embodiment. Figure 7 As shown, the air conditioner control method includes steps S110-S120.

[0039] S110, controlling the detection component to detect the gas concentration in the gas collecting cavity to obtain a refrigerant detection result.

[0040] In a specific implementation, the detection component is connected to the controller of the air conditioner indoor unit. The controller controls the detection component to detect the gas concentration in the gas collecting chamber, and can calculate the refrigerant detection result based on the detected gas concentration. The refrigerant detection result is divided into two types, one is refrigerant leakage, and the other is refrigerant non-leakage. In the case of refrigerant non-leakage, the gas in the gas collecting chamber is air, and the gas concentration in the gas collecting chamber is the concentration of air. In the case of refrigerant leakage, the gas in the gas collecting chamber is the leaked refrigerant, and the gas concentration in the gas collecting chamber is the concentration of the leaked refrigerant. The controller can calculate and obtain the corresponding refrigerant detection result based on the concentration of the gas detected by the detection component.

[0041] In one embodiment, if Figure 8 As shown, the step S110 includes steps S111-S114.

[0042] S111. Control the detection component to detect the initial concentration of gas in the gas collecting cavity.

[0043] In a specific implementation, the controller controls the detection component to detect the initial concentration of the gas in the gas collecting chamber. The initial concentration of the gas is the concentration obtained when the detection component performs the first detection. For example, when the refrigerant is not leaking, the gas in the gas collecting chamber is air, and the concentration obtained by the detection component for the first detection is the concentration of the air in the gas collecting chamber. When the refrigerant is leaking, the gas in the gas collecting chamber is the leaked refrigerant, and the concentration obtained by the detection component for the first detection is the concentration of the leaked refrigerant in the gas collecting chamber.

[0044] S112, controlling the detection component to detect the current concentration of gas in the gas collecting cavity.

[0045] In a specific implementation, the controller controls the detection element to detect the current concentration of the gas in the gas collecting chamber. The current concentration of the gas is the concentration detected at any time after the detection element completes the first time. The current concentration of the gas may be the concentration of air or the concentration of the refrigerant. For example, when the refrigerant is not leaking, the gas in the gas collecting chamber is air, and the current concentration of the gas detected by the detection element is the concentration of the air in the gas collecting chamber; when the refrigerant is leaking, the gas in the gas collecting chamber is the leaked refrigerant, and the current concentration of the gas detected by the detection element is the concentration of the leaked refrigerant in the gas collecting chamber.

[0046] S113. Obtain abnormal gas concentration according to the initial gas concentration and the current gas concentration.

[0047] In a specific implementation, the controller calculates and obtains the abnormal gas concentration based on the initial gas concentration and the current gas concentration. The abnormal gas concentration represents that the detection element detects that the concentration of the gas in the gas collecting cavity is abnormal within a period of time.

[0048] In one embodiment, if Fig. 9 As shown, step S113 includes steps S1131-S1134.

[0049] S1131. Obtain a difference between the current concentration of the gas and the initial concentration of the gas.

[0050] In a specific implementation, the controller controls the detection element to detect the initial gas concentration and the current gas concentration, and then calculates the difference between the current gas concentration and the initial gas concentration. For example, when the initial gas concentration detected by the detection element is 0.30 mg / m 3 The current gas concentration is 0.35 mg / m 3 , the difference between the current gas concentration and the initial gas concentration is 0.05 mg / m 3 The difference between the current gas concentration and the initial gas concentration reflects the change of the gas concentration in the gas collecting chamber. The abnormal condition of the gas can be further obtained through the difference between the current gas concentration and the initial gas concentration.

[0051] S1132: Compare the difference between the current concentration of the gas and the initial concentration of the gas with a first preset concentration value.

[0052] In a specific implementation, after calculating the difference between the current gas concentration and the initial gas concentration, the difference between the current gas concentration and the initial gas concentration is compared with a first preset concentration value, and the first preset concentration value is used as a comparison standard. The first preset concentration value can be set according to actual refrigerant detection requirements.

[0053] S1133. Determine whether the difference between the current concentration of the gas and the initial concentration of the gas is greater than the first preset concentration value.

[0054] In a specific implementation, after calculating the difference between the current gas concentration and the initial gas concentration, it is determined whether the difference between the current gas concentration and the initial gas concentration is greater than a first preset concentration value. The first preset concentration value is used as a judgment standard, and the abnormal gas concentration is determined according to the judgment result.

[0055] S1134: If the difference between the current gas concentration and the initial gas concentration is greater than the first preset concentration value, determine that the current gas concentration is an abnormal gas concentration.

[0056] In a specific implementation, the controller compares the difference between the current gas concentration and the initial gas concentration with the first preset concentration value. If the difference between the current gas concentration and the initial gas concentration is greater than the first preset concentration value, it means that the current gas concentration has changed abnormally compared with the initial gas concentration, and the gas concentration in the gas collecting chamber has fluctuated abnormally. At this time, the current gas concentration is determined to be an abnormal gas concentration. Assuming that the initial gas concentration detected by the detection element is 0.30 mg / m 3 The current gas concentration is 0.35 mg / m 3 At this time, the difference between the current gas concentration and the initial gas concentration is 0.05 mg / m 3 If the first preset concentration value is 0.02 mg / m 3 , the abnormal gas concentration can be obtained as the current gas concentration is equal to 0.35 mg / m 3 After obtaining the abnormal gas concentration, the controller can obtain the refrigerant detection result according to the obtained abnormal gas concentration.

[0057] S114. Obtain the refrigerant detection result according to the abnormal gas concentration.

[0058] In specific implementations, the gas concentration in the gas collecting chamber has undergone abnormal fluctuations, and it cannot be completely determined whether it is caused by refrigerant leakage. It may also be caused by other interfering gases. Therefore, obtaining the refrigerant detection results based on the abnormal gas concentration can avoid the occurrence of false alarms and bring a bad experience to users.

[0059] In one embodiment, if Fig.10 As shown, step S114 includes steps S1141-S1144.

[0060] S1141. Obtain an abnormal concentration change value according to a difference between the subsequent abnormal gas concentration and the preceding abnormal gas concentration.

[0061] In a specific implementation, the controller controls the detection element to detect the current concentration of gas in the gas collecting cavity over time. Usually, the controller controls the detection element to detect the gas concentration in the gas collecting cavity once every △t time (0s<△t<0.2s). Therefore, the current concentration of gas detected by the detection element includes the gas concentration at many different times in the gas collecting cavity. The abnormal gas concentration calculated by the controller includes the abnormal gas concentration at multiple different times. For example, the initial gas concentration detected by the detection element is 0.30mg / m 3 After △t time, the current gas concentration detected by the detector at the first moment is 0.35mg / m 3 At this time, the difference between the current gas concentration and the initial gas concentration is 0.05 mg / m 3 After a period of △t, the current gas concentration detected by the detector at the second moment is 0.40 mg / m 3 At this time, the difference between the current gas concentration and the initial gas concentration is 0.10 mg / m 3 If the first preset concentration value is 0.02 mg / m 3 , the controller can calculate that the abnormal gas concentration at the first moment is 0.35mg / m 3 The abnormal gas concentration at the second moment is 0.40 mg / m 3 Thus, the controller can obtain the abnormal gas concentration at multiple different times. The controller obtains the abnormal concentration change value according to the difference between the subsequent abnormal gas concentration and the previous abnormal gas concentration. For example, the subsequent abnormal gas concentration is 0.40 mg / m 3 , the abnormal gas concentration in front is 0.35mg / m 3 , then the abnormal concentration change value is 0.05mg / m 3 The abnormal concentration change value reflects the change of abnormal gas concentration after the abnormal gas concentration in the gas collecting cavity occurs.

[0062] S1142. Compare the abnormal concentration change value with a preset change threshold.

[0063] In the specific implementation, after the controller calculates and obtains the abnormal concentration change value, it compares the abnormal concentration change value with the preset change threshold. The preset change threshold is set according to the detection requirements. Using the preset change threshold as the comparison standard, it can be determined whether the abnormality is caused by refrigerant leakage or other interfering gases, thereby avoiding the occurrence of false alarms and causing a bad experience for users.

[0064] S1143. Determine whether the abnormal concentration change value is greater than the preset change threshold.

[0065] In the specific implementation, the controller compares the abnormal concentration change value with the preset change threshold, determines whether the abnormal concentration change value is greater than the preset change threshold, and then determines whether the abnormality is caused by refrigerant leakage or other interfering gases. Usually, after the interfering gas enters the gas collecting chamber, the gas concentration in the gas collecting chamber will only remain stable; when the refrigerant leaks, since the refrigerant leakage is continuous, the leaked refrigerant will accumulate in the gas collecting chamber over time, so the gas concentration in the gas collecting chamber will gradually increase. The controller makes an accurate judgment based on the relationship between the abnormal concentration change value and the preset change threshold, thereby avoiding the problem of false alarms causing a bad experience for users.

[0066] S1144: If the abnormal concentration change value is greater than the preset change threshold, determine that the refrigerant detection result is a refrigerant leak.

[0067] In a specific implementation, the controller compares the abnormal concentration change value with a preset change threshold. When the abnormal concentration change value is greater than the preset change threshold, it means that the abnormal gas concentration detected by the detection device is caused by refrigerant leakage. At this time, the controller determines that the refrigerant detection result is a refrigerant leakage. When the abnormal concentration change value is less than or equal to the preset change threshold, it means that the abnormal gas concentration detected by the detection device is caused by other interfering gases. The controller can determine that the refrigerant detection result is that the refrigerant is not leaking, thereby achieving accurate judgment of the abnormal concentration and effectively avoiding the occurrence of false alarms that bring a bad experience to users.

[0068] S120, when the refrigerant detection result is a refrigerant leakage, controlling the air guide plate to open and controlling the crossflow fan blade to rotate in the reverse direction.

[0069] In a specific implementation, when the controller determines that the refrigerant detection result is a refrigerant leak, the controller sends a command to control the air guide plate motor of the air conditioner indoor unit to rotate so that the air guide plate is opened. At the same time, the controller sends a command to control the motor of the crossflow fan blades of the air conditioner indoor unit to rotate in the opposite direction so that the crossflow fan blades as a whole rotate in the opposite direction. The reverse rotation of the crossflow fan blades disperses the refrigerant leaked inside the air conditioner indoor unit to prevent the refrigerant from gathering inside the air conditioner indoor unit. After the crossflow fan blades of the indoor unit work for a period of time (for example, 5 minutes), the controller controls the detection component to detect the gas concentration in the gas collecting chamber again to ensure that the refrigerant concentration in the cavity is within a safe concentration range. At this time, the shutdown panel of the air conditioner indoor unit returns to a closed state to ensure the safety of the user to the greatest extent.

[0070] In one embodiment, if Fig.11 As shown, the air conditioner control method further includes step S130.

[0071] S130, when the refrigerant detection result is a refrigerant leakage, controlling the external fan to stop running.

[0072] In specific implementation, the air conditioner includes an external fan, i.e., the air conditioner outdoor unit. The external fan and the air conditioner indoor unit work together to achieve refrigeration. The external fan is mainly used to compress and dissipate the refrigerant. The external fan is mainly composed of a compressor, a condenser, a heat dissipation fan blade, etc. When the controller determines that the refrigerant detection result is a refrigerant leak, the controller sends a command to control the external fan to stop running, so that the compressor in the external fan will quickly recover the refrigerant remaining in the evaporator to ensure safety to the greatest extent.

[0073] The air conditioner control method provided in the present application obtains the refrigerant detection result by controlling the detection part to detect the gas concentration in the gas collecting chamber, and then controls the air guide plate to open and the crossflow fan blade to rotate in the opposite direction when the refrigerant detection result is a refrigerant leakage. This can effectively prevent the safety hazard caused by the leakage of flammable refrigerant and improve the safety of the air conditioner.

[0074] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. An air conditioner housing, characterized in that: include: The shell body has a gas collecting cavity formed inside thereof for collecting the refrigerant; A refrigerant detection assembly, comprising an air extraction pump and a detection component, wherein the air extraction pump is disposed on the shell body and communicates with the gas collecting cavity, and the detection component is disposed on the shell body and connected to the air extraction pump; The detection component is used to detect the refrigerant, and the vacuum pump is used to extract the refrigerant in the gas collecting cavity and transport it to the detection component for contact detection.

2. The air conditioner casing according to claim 1, characterized in that: The shell body is also formed with a gas gathering cavity, the air pump is connected to the gas gathering cavity, and the detection element is accommodated in the gas gathering cavity.

3. The air conditioner casing according to claim 2, characterized in that: The refrigerant detection component also includes a drainage component, which includes a motor and a fan blade. The motor is fixed on the side wall of the air gathering cavity, and the fan blade is connected to the motor and adjacent to the detection part, wherein the motor is used to drive the fan blade to rotate to guide the refrigerant to flow toward the detection part.

4. An air conditioner, characterized in that: It comprises an evaporator and the air-conditioning casing according to any one of claims 1 to 3, wherein the evaporator is arranged in the air-conditioning casing and at least partially arranged in the air collecting cavity of the air-conditioning casing.

5. The air conditioner according to claim 4, characterized in that: At least one end of the evaporator is bent to form a bent tube body, and the bent tube body is accommodated in the gas collecting cavity.

6. An air conditioner control method, characterized in that: Applied to the air conditioner according to any one of claims 4 to 5, the method comprises: Controlling the detection component to detect the gas concentration in the gas collecting cavity to obtain the refrigerant detection result; When the refrigerant detection result is a refrigerant leakage, the air guide plate is controlled to open and the crossflow fan blade is controlled to rotate in the reverse direction.

7. The air conditioner control method according to claim 6, characterized in that: The control detection component detects the gas concentration in the gas collecting cavity to obtain the refrigerant detection result, including: The control detection component detects the initial concentration of gas in the gas collecting cavity; The control detection component detects the current concentration of gas in the gas collecting cavity; Obtaining abnormal gas concentration according to the initial gas concentration and the current gas concentration; The refrigerant detection result is obtained according to the abnormal gas concentration.

8. The air conditioner control method according to claim 7, characterized in that: The obtaining of abnormal gas concentration according to the initial gas concentration and the current gas concentration comprises: Obtaining a difference between the current concentration of the gas and the initial concentration of the gas; comparing a difference between the current concentration of the gas and the initial concentration of the gas with a first preset concentration value; Determine whether the difference between the current concentration of the gas and the initial concentration of the gas is greater than the first preset concentration value; If the difference between the current gas concentration and the initial gas concentration is greater than the first preset concentration value, the current gas concentration is determined to be an abnormal gas concentration.

9. The air conditioner control method according to any one of claims 7 to 8, characterized in that: The obtaining of the refrigerant detection result according to the abnormal gas concentration includes: Obtaining an abnormal concentration change value according to a difference between the subsequent abnormal gas concentration and the previous abnormal gas concentration; Comparing the abnormal concentration change value with a preset change threshold; Determining whether the abnormal concentration change value is greater than the preset change threshold; If the abnormal concentration change value is greater than the preset change threshold, the refrigerant detection result is determined to be a refrigerant leak.

10. The air conditioner control method according to any one of claims 6 to 8, characterized in that: The method further comprises: When the refrigerant detection result is a refrigerant leakage, the external fan is controlled to stop running.

Images