Disclosure of Invention
The present application is directed to solving at least one of the above problems.
Therefore, an object of the present application is to provide a refrigerant leakage detection method for an air conditioner. The method can simply, conveniently and accurately judge whether the air conditioner has refrigerant leakage or not, further avoid the adverse effects of the refrigerant leakage, such as the performance reduction of the air conditioner, the damage to a compressor and the like, and improve the safety and the reliability of the air conditioner.
A second objective of the present application is to provide a refrigerant leakage detecting system of an air conditioner.
A third object of the present application is to provide an air conditioner.
A fourth object of the present application is to propose a computer readable storage medium.
In order to achieve the above object, a first aspect of the present application discloses a refrigerant leakage detection method for an air conditioner, including the steps of: acquiring a pressure threshold corresponding to a low value of the indoor temperature and the outdoor temperature; calculating a difference between the pressure threshold and an actual pressure; and if the difference value is smaller than a preset value, determining whether the refrigerant of the air conditioner leaks according to the variation trend of the condenser pressure, the exhaust temperature and the operation current after the air conditioner operates for a preset time.
According to the refrigerant leakage detection method of the air conditioner, whether the air conditioner has refrigerant leakage or not can be simply, conveniently and accurately judged, so that necessary measures can be taken timely, further, adverse effects of performance reduction of the air conditioner, damage to a compressor and the like caused by refrigerant leakage are avoided, when the air conditioner is a combustible refrigerant, potential safety hazards caused by combustible refrigerant leakage can be reduced, and safety and reliability of the air conditioner are improved.
In some examples, further comprising: and if the difference value is greater than or equal to the preset value, determining that the refrigerant of the air conditioner leaks.
In some examples, the determining whether the refrigerant of the air conditioner leaks according to a variation trend of the condenser pressure, the discharge temperature, and the operation current includes: and determining that the refrigerant of the air conditioner leaks if the condenser pressure is continuously reduced, the exhaust temperature is continuously increased and the operation current is continuously reduced.
In some examples, the calculating the pressure threshold corresponding to a low value of the indoor temperature and the outdoor temperature includes: detecting indoor temperature and outdoor temperature; and inquiring a pressure threshold value corresponding to the low value of the indoor temperature and the outdoor temperature from a prestored pressure threshold value table, wherein the pressure threshold value table stores a plurality of temperatures and a plurality of pressure threshold values corresponding to the temperatures in a one-to-one mode.
In some examples, after determining the refrigerant leakage of the air conditioner, the method further includes: controlling the air conditioner to be turned off; and/or performing refrigerant leakage early warning.
The second aspect of the present application discloses a refrigerant leakage detection system of an air conditioner, including: an acquisition module for acquiring a pressure threshold corresponding to a low value of the indoor temperature and the outdoor temperature; a calculation module for calculating a difference between the pressure threshold and an actual pressure; and the detection module is used for determining whether the refrigerant of the air conditioner leaks or not according to the variation trend of the pressure, the exhaust temperature and the operation current of the condenser after the air conditioner operates for a preset time when the difference value is smaller than a preset value.
According to the refrigerant leakage detection system of the air conditioner, whether the air conditioner has refrigerant leakage or not can be simply, conveniently and accurately judged, so that necessary measures can be taken timely, further, adverse effects of air conditioner performance reduction, compressor damage and the like caused by refrigerant leakage are avoided, when the refrigerant is combustible, the potential safety hazard caused by combustible refrigerant leakage can be reduced, and the safety and the reliability of the air conditioner are improved. .
In some examples, the detection module is further configured to determine refrigerant leakage of the air conditioner when the difference is greater than or equal to the preset value.
In some examples, the detection module is configured to determine that the refrigerant of the air conditioner leaks when the condenser pressure continues to decrease, the discharge temperature continues to increase, and the operating current continues to decrease.
In some examples, the calculation module is configured to detect an indoor temperature and an outdoor temperature, and to look up a pressure threshold corresponding to a low value of the indoor temperature and the outdoor temperature from a pre-stored pressure threshold table, where the pressure threshold table stores a plurality of temperatures and a plurality of pressure thresholds corresponding to the plurality of temperatures in a one-to-one manner.
In some examples, further comprising: the control module is used for controlling the air conditioner to be shut down after a refrigerant of the air conditioner leaks; and/or the alarm module is used for carrying out refrigerant leakage early warning after the refrigerant of the air conditioner leaks.
A third aspect of the present application discloses an air conditioner, which includes a memory, a processor, and a refrigerant leakage detection program of the air conditioner, which is stored in the memory and can be run on the processor, wherein when the processor executes the refrigerant leakage detection program of the air conditioner, the refrigerant leakage detection method of the air conditioner according to the first aspect is implemented. The air conditioner can simply, conveniently and accurately judge whether the air conditioner leaks the refrigerant, further, adverse effects such as air conditioner performance reduction and compressor damage caused by refrigerant leakage are avoided, and safety and reliability of the air conditioner are improved.
A fourth aspect of the present application discloses a computer-readable storage medium on which a refrigerant leakage detection program of an air conditioner is stored, the refrigerant leakage detection program of the air conditioner, when executed by a processor, implementing the refrigerant leakage detection method of the air conditioner according to the first aspect.
Additional aspects and advantages of the present 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 the present application.
Detailed Description
Reference will now be made in detail to the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.
The following describes a refrigerant leakage detection method and system of an air conditioner and the air conditioner according to an embodiment of the present application with reference to the accompanying drawings.
Fig. 1 is a flowchart illustrating a refrigerant leakage detection method of an air conditioner according to an embodiment of the present disclosure. As shown in fig. 1 and with reference to fig. 2, a refrigerant leakage detection method of an air conditioner according to an embodiment of the present application includes the following steps:
s101: a pressure threshold corresponding to a low value of the indoor temperature and the outdoor temperature is acquired. Wherein, the low value means a temperature of which the temperature is relatively low among the indoor temperature and the outdoor temperature. Such as: if the indoor temperature is higher than the outdoor temperature, the outdoor temperature is a low value, otherwise, the indoor temperature is a low value.
Specifically, the indoor temperature and the outdoor temperature are detected first, and then the pressure threshold is determined based on the temperature between the two, which is lower.
For example: and inquiring a pressure threshold value corresponding to the low value of the indoor temperature and the outdoor temperature from a prestored pressure threshold value table, wherein the pressure threshold value table stores a plurality of temperatures and a plurality of pressure threshold values corresponding to the temperatures in a one-to-one mode.
The pressure threshold table may be obtained by calibrating in advance through an experimental manner, for example: in the case of different low values, the corresponding pressure threshold value is detected, and the pressure threshold value table is formed.
In the above description, the indoor temperature and the outdoor temperature may be detected by the temperature sensor, and of course, the indoor temperature and the outdoor temperature may also be determined by other manners, which is not described in detail.
As shown in fig. 2, the indoor temperature (i.e., indoor ambient temperature) is denoted as T1, the outdoor temperature (i.e., outdoor ambient temperature) is denoted as T4, and the lower of the indoor temperature and the outdoor temperature is denoted as T0. The pressure threshold is noted as P0.
S102: the difference between the pressure threshold and the actual pressure is calculated.
The actual pressure is denoted as Pc, and the actual pressure Pc is, for example, the pressure in the middle of an outdoor heat exchanger (referred to as an outdoor condenser in the cooling mode). Can be detected by a pressure sensor.
S103: and if the difference value is smaller than the preset value, determining whether the refrigerant of the air conditioner leaks according to the variation trend of the condenser pressure, the exhaust temperature and the operation current after the air conditioner operates for the preset time.
In a specific example, if the condenser pressure continues to decrease, the discharge air temperature continues to increase, and the operation current continues to decrease, it is determined that the refrigerant of the air conditioner leaks.
For example, whether P0-Pc < △ P is established or not is judged, if so, the air conditioner operates according to a normal program, after the air conditioner operates for a preset time, the current condenser pressure Pc1, the current exhaust temperature TP1 and the current I1 are obtained, then, after each preset time interval, the current condenser pressure Pc2, the current exhaust temperature TP2 and the current I2 are obtained again, and after the preset time interval is passed again, the current condenser pressure Pc3, the current exhaust temperature TP3 and the current I3 are obtained again.
Whether Pc3 < Pc2 < Pc1, TP1 < TP2 < TP3 and I3 < I2 < I1 are established or not is judged, and if yes, the refrigerant leakage is judged.
In the above example, the predetermined time interval is, but not limited to, 5 minutes, the preset value △ P can be preset, △ P is, for example, in the range of 0 to 0.5MPa, in this example, 0.2MPa is selected, and the predetermined time is, but not limited to, 15 minutes.
It is understood that, in the above-mentioned, whether the refrigerant leaks is determined through the condenser pressure, the exhaust temperature and the operating current obtained through three consecutive detections, in other examples, whether the refrigerant leaks may also be determined through more detection results.
Referring to fig. 2, the method for detecting refrigerant leakage of an air conditioner further includes: and if the difference value is greater than or equal to the preset value, determining the refrigerant leakage of the air conditioner. That is, if the pressure difference between the two is too large, it indicates that the refrigerant leaks.
According to the refrigerant leakage detection method of the air conditioner, whether the air conditioner leaks the refrigerant can be simply, conveniently and accurately judged, so that necessary measures can be taken timely, further, adverse effects of performance reduction of the air conditioner, damage to a compressor and the like caused by refrigerant leakage are avoided, when the refrigerant is combustible, potential safety hazards caused by combustible refrigerant leakage can be reduced, and safety and reliability of the air conditioner are improved.
Further, the method for detecting refrigerant leakage of an air conditioner, after determining refrigerant leakage of the air conditioner, further comprises: controlling the air conditioner to be turned off; and/or performing refrigerant leakage early warning. Thereby can reduce the leakage speed of refrigerant to can also make the user in time learn, thereby can in time take counter-measure, reduce the harm that air conditioner refrigerant leaked and brought, further promote the security and the reliability of air conditioner.
Fig. 3 is a block diagram illustrating a refrigerant leakage detecting system of an air conditioner according to an embodiment of the present disclosure. As shown in fig. 3, a refrigerant leakage detecting system 300 of an air conditioner according to an embodiment of the present application includes: an acquisition module 310, a calculation module 320, and a detection module 330.
The obtaining module 310 is configured to obtain a pressure threshold corresponding to a low value of the indoor temperature and the outdoor temperature. The calculation module 320 is used to calculate the difference between the pressure threshold and the actual pressure. The detection module 330 is configured to determine whether a refrigerant of the air conditioner leaks according to a variation trend of the condenser pressure, the exhaust temperature, and the operating current after the air conditioner operates for a preset time when the difference is smaller than a preset value.
In an embodiment of the application, the detecting module 330 is further configured to determine that the refrigerant of the air conditioner leaks when the difference is greater than or equal to the preset value.
In an embodiment of the present application, the detection module 330 is configured to determine that the refrigerant of the air conditioner leaks when the condenser pressure continues to decrease, the discharge temperature continues to increase, and the operating current continues to decrease.
In one embodiment of the present application, the calculation module 320 is configured to detect an indoor temperature and an outdoor temperature, and query a pre-stored pressure threshold table for a pressure threshold corresponding to a low value of the indoor temperature and the outdoor temperature, wherein the pressure threshold table stores a plurality of temperatures and a plurality of pressure thresholds corresponding to the temperatures.
In one embodiment of the present application, further comprising: a control module (not shown in fig. 3) for controlling the air conditioner to shut down after a refrigerant of the air conditioner leaks; and/or an alarm module (not shown in fig. 3) for performing a refrigerant leakage early warning after the refrigerant of the air conditioner leaks.
According to the refrigerant leakage detection system of the air conditioner, whether the refrigerant leakage occurs to the air conditioner can be simply, conveniently and accurately judged, so that necessary measures can be taken timely, further, adverse effects of air conditioner performance reduction, compressor damage and the like caused by refrigerant leakage are avoided, when the refrigerant is combustible, the potential safety hazard caused by combustible refrigerant leakage can be reduced, and the safety and the reliability of the air conditioner are improved.
It should be noted that a specific implementation manner of the refrigerant leakage detection system of the air conditioner in the embodiment of the present application is similar to that of the refrigerant leakage detection system of the air conditioner in the embodiment of the present application, and please refer to the description of the method portion specifically, which is not described herein again.
Further, an embodiment of the present application discloses an air conditioner, which includes a memory, a processor, and a refrigerant leakage detection program of the air conditioner, which is stored in the memory and can be run on the processor, and when the processor executes the refrigerant leakage detection program of the air conditioner, the refrigerant leakage detection method of the air conditioner according to any one of the embodiments is implemented. The air conditioner can simply, conveniently and accurately judge whether the air conditioner leaks the refrigerant, further, adverse effects such as air conditioner performance reduction and compressor damage caused by refrigerant leakage are avoided, and safety and reliability of the air conditioner are improved.
In addition, other configurations and functions of the air conditioner according to the embodiment of the present application are known to those skilled in the art, and are not described herein.
The computer-readable storage medium of the embodiment of the present application stores thereon a refrigerant leakage detection program of an air conditioner, and when the refrigerant leakage detection program of the air conditioner is executed by a processor, the method for detecting refrigerant leakage of an air conditioner according to any one of the foregoing embodiments of the present application is implemented.
The computer-readable storage medium described above may take any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only Memory (ROM), an Erasable Programmable read-only Memory (EPROM), a flash Memory, an optical fiber, a portable compact disc read-only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations for aspects of the present application may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + +, and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of Network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.