CN109323362B - Refrigerant leakage fault processing method and system and air conditioner - Google Patents
Refrigerant leakage fault processing method and system and air conditioner Download PDFInfo
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- CN109323362B CN109323362B CN201811161616.1A CN201811161616A CN109323362B CN 109323362 B CN109323362 B CN 109323362B CN 201811161616 A CN201811161616 A CN 201811161616A CN 109323362 B CN109323362 B CN 109323362B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/36—Responding to malfunctions or emergencies to leakage of heat-exchange fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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Abstract
The invention discloses a refrigerant leakage fault processing method, a refrigerant leakage fault processing system and an air conditioner, wherein the refrigerant leakage fault processing method comprises the following steps: judging whether a refrigerant leakage fault occurs; if the refrigerant leakage fault occurs, further judging whether the temperature of the base of the compressor is higher than the maximum allowable operation temperature of the base; and if the base temperature of the compressor is higher than the maximum allowable base operating temperature, controlling the air conditioner to stop and judging as an inoperable blocking fault. The invention solves the technical problems that the fault reason can not be effectively judged when the refrigerant leaks and corresponding processing means is adopted according to the fault reason, thereby achieving the purpose that whether the fault reason is the non-operational blocking fault can be judged when the refrigerant has the fault, being convenient for maintenance personnel to quickly maintain according to the fault reason, recovering the normal use of the air conditioner and improving the satisfaction degree of users.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a refrigerant leakage fault processing method, a refrigerant leakage fault processing system and an air conditioner.
Background
The air conditioner is widely applied due to the refrigerating/heating function, and refrigerant leakage may occur in the use process of the air conditioner, so that the refrigerating/heating effect of the air conditioner is influenced.
Some air conditioners in the related art are provided with a refrigerant leakage detection module which can detect whether the refrigerant leaks or not, and the air conditioner is directly turned off when the refrigerant leaks. However, the inventors of the present application have found that the above-mentioned techniques have at least the following technical problems:
the technical problem is as follows: some air conditioners in the related art cannot judge the leakage reason when detecting the refrigerant leakage, and further cannot perform corresponding processing according to the leakage reason.
Disclosure of Invention
The embodiment of the application provides a processing method, a processing system and an air conditioner for refrigerant leakage faults, solves the technical problems that in the prior art, the fault reason cannot be judged when the refrigerant leaks, and corresponding processing means are adopted according to the fault reason, realizes whether the fault reason for refrigerant leakage is an inoperable blocking fault, and is convenient for maintenance personnel to quickly maintain and recover the normal use of the air conditioner according to the fault reason.
The embodiment of the application provides a method for processing refrigerant leakage faults, which comprises the following steps: judging whether a refrigerant leakage fault occurs; if the refrigerant leakage fault occurs, further judging whether the temperature of the base of the compressor is higher than the maximum allowable operation temperature of the base; and if the base temperature of the compressor is higher than the maximum allowable base operating temperature, controlling the air conditioner to stop and judging as an inoperable blocking fault.
Optionally, the method for processing the refrigerant leakage fault further includes: when the refrigerant leakage fault is judged to occur, adding 1 to the leakage fault frequency; judging whether the leakage fault frequency is greater than a preset threshold value or not; and if the air quantity is larger than the preset threshold value, controlling the air conditioner to stop.
Optionally, the method for processing the refrigerant leakage fault further includes: if the temperature of the base of the compressor is less than or equal to the highest allowable operation temperature of the base, further acquiring the actual output capacity value of the air conditioner, and acquiring the required output capacity value of the air conditioner; if the actual output capacity value is smaller than A% of the required output capacity value, controlling the air conditioner to stop, and judging as an inoperable blocking fault; wherein 0< a < 100.
Optionally, after the step of obtaining the actual output capacity value of the air conditioner and obtaining the required output capacity value of the air conditioner, the method further includes: if the actual output capacity value is larger than A% of the required output capacity value, reducing the rotation frequency of the compressor; after waiting for a preset time, further judging whether the current temperature of the base is less than the maximum allowable operation temperature of the base, and whether the difference between the current temperature of the base and the maximum allowable operation temperature of the base is less than a preset threshold value; and if the current temperature of the base is less than the maximum allowable operating temperature of the base, and the difference between the current temperature of the base and the maximum allowable operating temperature of the base is less than the preset threshold value, controlling the air conditioner to stop and judging as an inoperable blocking fault.
Optionally, between the step of decreasing the rotation frequency of the compressor if the actual output capacity value is greater than a% of the required output capacity value and the step of further determining whether the current temperature of the base is less than the maximum allowable operating temperature of the base after waiting for the first preset time, and whether a difference between the current temperature of the base and the maximum allowable operating temperature of the base is less than a preset threshold, the method further includes: after waiting for a second preset time, judging whether the current temperature of the base is lower than the target operation temperature of the base or not; if the current temperature of the base is lower than the target operation temperature of the base, increasing the rotation frequency of the compressor and acquiring the shell temperature of the compressor; if the shell temperature of the compressor exceeds a preset shell temperature alarm threshold value, alarming and stopping increasing the rotation frequency of the compressor; if the shell temperature of the compressor does not exceed a preset shell temperature alarm threshold value, continuing to increase the rotation frequency of the compressor until the base temperature of the compressor reaches the target operation temperature of the base; and after waiting for the first preset time, further judging whether the current temperature of the base is lower than the maximum allowable operation temperature of the base or not, and whether the difference between the current temperature of the base and the maximum allowable operation temperature of the base is lower than a preset threshold or not.
Optionally, after the step of waiting for the preset time, further determining whether the current temperature of the base is less than the maximum allowable operating temperature of the base, and whether a difference between the current temperature of the base and the maximum allowable operating temperature of the base is less than a preset threshold, the method further includes: if the current temperature of the base is higher than the maximum allowable operation temperature of the base, or the difference between the current temperature of the base and the maximum allowable operation temperature of the base is higher than the preset threshold, further judging whether the actual output capacity value is higher than B% of the required output capacity value; if the actual output capacity value is larger than B% of the required output capacity value, judging that the throttling device is blocked and has a fault, and prompting a user; if the actual output capacity value is less than or equal to B% of the required output capacity value, controlling the air conditioner to stop, and judging as an inoperable blocking fault; wherein 0< B < 100.
Optionally, the magnitude of the reduced compressor rotational frequency is proportional to the difference between the base temperature of the compressor and the maximum allowable discharge operating temperature.
The embodiment of the present application further provides a system for processing refrigerant leakage fault, including: the acquisition module is used for acquiring refrigerant leakage information and the base temperature of the compressor; the judging module is used for judging whether a refrigerant leakage fault occurs according to the refrigerant leakage information, further judging whether the base temperature of the compressor is higher than the highest allowable base operating temperature after the refrigerant leakage fault occurs, and judging that the compressor cannot operate to block the fault and sending a first signal to the control module if the base temperature of the compressor is higher than the highest allowable base operating temperature; and the control module is used for controlling the air conditioner to stop according to the first signal.
Optionally, the determining module is further configured to add 1 to the leakage failure frequency when it is determined that the refrigerant leakage failure occurs, determine whether the leakage failure frequency is greater than a preset threshold, and further send a second signal to the control module when the leakage failure frequency is greater than the preset threshold, where the control module is further configured to control the air conditioner to stop when receiving the second signal.
Optionally, the determining module is further configured to send a first obtaining signal to the obtaining module when the temperature of the base of the compressor is less than or equal to the maximum allowable operating temperature of the base, the obtaining module is further configured to obtain an actual output capacity and a required output capacity value of the air conditioner according to the first obtaining signal, the determining module is further configured to determine that the air conditioner is in a non-operational blocking fault when the actual output capacity value is less than a% of the required output capacity value, and send a third signal to the control module, and the control module is further configured to control the air conditioner to stop according to the third signal.
Optionally, the determining module is further configured to send a fourth signal to the control module when the actual output capacity value is greater than a% of the required output capacity value, the control module is also used for controlling and reducing the rotation frequency of the compressor according to the fourth signal, the judging module is also used for controlling and reducing the rotation frequency of the compressor after the preset time, sending a second acquisition signal to the acquisition module, the acquisition module being further configured to acquire a current temperature of the base according to the second acquisition signal, and when the current temperature of the base is lower than the maximum allowable operating temperature of the base and the difference between the current temperature of the base and the maximum allowable operating temperature of the base is lower than a preset threshold value, determining that the blockage fault cannot be operated, and sending a fourth signal to the control module, wherein the control module is further used for controlling the air conditioner to stop according to the fourth signal.
Optionally, the system for processing the refrigerant leakage fault further includes: an alarm module; the judging module is further used for judging whether the current temperature of the base is lower than the target operation temperature of the base or not after the second preset time of reducing the rotation frequency of the compressor; when the current temperature of the base is lower than the target operation temperature of the base, the control module controls the rotation frequency of the compressor to be increased, and the shell temperature of the compressor is obtained through the obtaining module; the judging module is also used for sending an alarm signal to the control module when the shell temperature of the compressor exceeds a preset shell temperature alarm threshold value, and the control module is also used for controlling the alarm module to alarm according to the alarm signal; the obtaining module is further used for continuously increasing the rotation frequency of the compressor when the temperature of the base of the compressor does not exceed the preset shell temperature alarm threshold value until the temperature of the base of the compressor reaches the target operation temperature of the base.
Optionally, the system for processing the refrigerant leakage fault further includes: the prompting module is used for prompting the user according to the prompting signal; the judging module is further used for further judging whether the actual output capacity value is greater than B% of the required output capacity value or not when the current temperature of the base is greater than the maximum allowable operating temperature of the base or the difference between the current temperature of the base and the maximum allowable operating temperature of the base is greater than the preset threshold value, and if the actual output capacity value is greater than B% of the required output capacity value, judging that the throttling device is blocked and faulted, and the prompting module sends the prompting signal.
Optionally, the magnitude of the reduced compressor rotational frequency is proportional to the difference between the base temperature of the compressor and the maximum allowable discharge operating temperature.
The embodiment of the application also provides an air conditioner, which comprises the refrigerant leakage fault processing system of the embodiment.
The embodiment of the application further provides a computer-readable storage medium, in which a processing program of the refrigerant leakage fault is stored, and when the processing program of the refrigerant leakage fault is executed by a processor, the processing method of the refrigerant leakage fault, which is described in the above embodiment, is implemented.
The embodiment of the application further provides equipment which comprises a memory, a processor and a refrigerant leakage fault processing program which is stored on the memory and can run on the processor, wherein the method for processing the refrigerant leakage fault is realized when the processor executes the refrigerant leakage fault processing program.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
1. when a refrigerant leakage fault occurs, whether an inoperable blocking fault occurs or not is judged according to the temperature of a base of a compressor, and the air conditioner is controlled to stop when the inoperable blocking fault occurs, so that the technical problem that the fault reason cannot be effectively judged when the refrigerant leaks is effectively solved, maintenance personnel can quickly maintain the air conditioner according to the fault reason, the normal use of the air conditioner is recovered, and the satisfaction degree of users is improved;
2. setting a refrigerant leakage frequency to judge whether the air conditioner can be recovered, and considering that the air conditioner has an inoperable blocking fault when the refrigerant leakage frequency is excessive, the air conditioner cannot effectively refrigerate/heat, needs to be shut down to wait for maintenance of a professional, and avoids the problem that the air conditioner cannot refrigerate/heat when being started, thereby wasting energy;
3. setting a capacity output ratio to accurately judge whether the current output capacity of the air conditioner is too low, thereby judging whether the blocking fault occurs due to the incapability of running;
4. when the difference between the actual output capacity value and the required output capacity of the air conditioner is within a certain range, the temperature of the coil is reduced by reducing the rotating frequency of the compressor, so that the temperature of the base is reduced, and whether the non-operational blocking fault occurs or the throttling device blocking fault occurs can be effectively judged by waiting for the base temperature of the compressor for a period of time and the highest allowable operating temperature of the base.
Drawings
Fig. 1 is a flowchart of a refrigerant leakage fault handling method according to an embodiment of the present invention;
fig. 2 is a block diagram of a refrigerant leakage failure processing system according to an embodiment of the present invention.
Detailed Description
This application acquires the base temperature of compressor when detecting the refrigerant emergence and leaking, compares the base temperature and the highest allowable operating temperature of base of compressor, can judge whether the fault reason is the non-operational jam trouble, and the maintenance personal of being convenient for can be according to fault reason quick maintenance, resumes the normal use of air conditioner, promotes user satisfaction.
For a better understanding of the above technical solutions, exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
Fig. 1 is a flowchart of a refrigerant leakage fault processing method according to an embodiment of the present invention. As shown in fig. 1, the method for processing refrigerant leakage fault according to the embodiment of the present invention includes the following steps:
s1: and judging whether a refrigerant leakage fault occurs.
In an example of the present invention, the determining of the refrigerant leakage may include installing a temperature sensor at a predetermined position or a predetermined device on the refrigerant circulation line, and determining whether the refrigerant leakage occurs according to whether a temperature collected by the temperature sensor exceeds a predetermined temperature range.
In another example of the present invention, the method for determining leakage of the refrigerant may further include setting a neural network model, inputting current operating parameters of the air conditioner and environmental information of an environment where the air conditioner is located into the neural network model to calculate a remaining amount of the refrigerant, and determining whether the refrigerant leaks according to the remaining amount of the refrigerant.
It should be noted that, although the above examples provide two ways of detecting whether the refrigerant leaks, the present application is not limited to the specific way of detecting whether the refrigerant leaks, and any way that can accurately detect whether the refrigerant leaks may be adopted.
S2: and if the refrigerant leakage fault occurs, further judging whether the temperature of the base of the compressor is higher than the maximum allowable operation temperature of the base.
Specifically, the leakage fault of the refrigerant includes an inoperable blocking fault in a refrigerant circulation pipeline, and when the inoperable blocking fault occurs, the air conditioner is continuously operated to increase the temperature of the coil, and finally the coil is burnt out to increase the temperature of the base of the compressor to exceed the maximum allowable operating temperature of the base. Therefore, when a refrigerant leakage fault occurs, the temperature of the base of the compressor needs to be acquired, and whether the temperature of the base of the compressor is higher than the maximum allowable operating temperature of the base is judged. The mode of obtaining the base temperature of the compressor comprises the steps of arranging a temperature sensor on the base, and collecting the base temperature of the compressor through the temperature sensor.
S3: and if the base temperature of the compressor is higher than the maximum allowable base operating temperature, controlling the air conditioner to stop and judging as an inoperable blocking fault.
This application acquires the base temperature of compressor when the refrigerant takes place to leak, compares the base temperature and the highest allowable operating temperature of base of compressor, can judge whether the fault reason is the non-operational jam trouble, and the maintenance personal of being convenient for can be according to fault reason quick maintenance, resumes the normal use of air conditioner, promotes user satisfaction.
In an embodiment of the present invention, the method for processing the refrigerant leakage fault further includes: when the refrigerant leakage fault is judged to occur, adding 1 to the leakage fault frequency; judging whether the leakage fault frequency is greater than a preset threshold value or not; and if the air quantity is larger than the preset threshold value, controlling the air conditioner to stop.
Specifically, a threshold is preset to determine whether the refrigerant is excessive at this time. The threshold value is set according to the specific structure and performance of the air conditioner. In the initial state, the number of leak failures is 0. And adding 1 to the leakage fault frequency every time a refrigerant leakage fault is detected. When the failure frequency is larger than the preset threshold value, the air conditioner is considered to have an inoperable blocking failure when the leakage failure of the refrigerant is excessive, the air conditioner cannot effectively refrigerate/heat, and the air conditioner needs to be stopped to wait for maintenance of a professional.
In an embodiment of the present invention, after step S2, the method further includes: if the temperature of the base of the compressor is less than or equal to the maximum allowable operation temperature of the base, further acquiring the actual output capacity value of the air conditioner, and acquiring the required output capacity value of the air conditioner; and if the actual output capacity value is less than A% of the required output capacity value, controlling the air conditioner to stop, and judging as an inoperable blockage fault. Wherein A is a set proportion value, and 0< A < 100.
Specifically, a proportional system a for determining whether an inoperable blocking fault has occurred is set. And when the temperature of the base of the compressor is less than or equal to the maximum allowable operation temperature of the base, if the actual output capacity value is less than A% of the required output capacity value, the corresponding capacity which cannot be output by the air conditioner according to the conditions set by the user is represented. For example, for a fixed square meter of room, the user activates the air conditioner to cool. The air conditioner provides the corresponding required refrigerating capacity according to the square meters of the air conditioner and the current indoor temperature. And if the fact that the actual refrigerating capacity provided by the air conditioner is smaller than A% of the required refrigerating capacity is detected, the output capacity of the air conditioner is too low, the air conditioner is controlled to stop at the moment, and the non-operational blocking fault is judged.
In one embodiment of the present invention, after the step of obtaining the actual output capacity value of the air conditioner and obtaining the required output capacity value of the air conditioner, the method further comprises:
and if the actual output capacity value is greater than A% of the required output capacity value, reducing the rotation frequency of the compressor. Wherein. The purpose of reducing the rotational frequency of the compressor is to reduce the temperature of the coil and thus the temperature of the base. In one embodiment of the present invention, the magnitude of the reduced rotational frequency of the compressor is proportional to the difference between the base temperature of the compressor and the maximum allowable discharge temperature, and the magnitude of the reduced rotational frequency of the compressor is set according to the difference between the base temperature of the compressor and the maximum allowable discharge temperature.
After waiting for a second preset time (for example, several minutes), judging whether the current temperature of the base is lower than the target operation temperature of the base, and sometimes, after the rotating speed of the compressor is reduced, the temperature of the base of the compressor is excessively reduced due to the temperature hysteresis, and the temperature of the base of the compressor is too low to be beneficial to the operation of the air conditioner.
And if the current temperature of the base is lower than the target operation temperature of the base, increasing the rotation frequency of the compressor and acquiring the shell temperature of the compressor. The rotating frequency of the compressor is increased to increase the temperature of a base of the compressor, and the shell temperature of the compressor is obtained to detect whether the shell breaks down or not.
And if the shell temperature of the compressor exceeds a preset shell temperature alarm threshold value, indicating that the shell of the compressor is in fault, alarming and stopping increasing the rotation frequency of the compressor. Wherein the shell temperature alarm threshold is lower than the maximum allowable temperature value.
If the shell temperature of the compressor does not exceed the preset shell temperature alarm threshold value, the shell of the compressor is free of faults, and at the moment, the rotation frequency of the compressor is continuously increased until the base temperature of the compressor reaches the target operation temperature of the base.
After waiting for a first preset time (e.g., several minutes), it is further determined whether the current temperature of the base is less than the maximum allowable operating temperature of the base, and whether the difference between the current temperature of the base and the maximum allowable operating temperature of the base is less than a preset threshold.
And if the current temperature of the base is less than the maximum allowable operating temperature of the base, and the difference between the current temperature of the base and the maximum allowable operating temperature of the base is less than a preset threshold value, controlling the air conditioner to stop, and judging as an inoperable blocking fault. If the non-operational blockage fault does not occur in the refrigerant pipeline, the current temperature of the base can be obviously reduced after the preset time, so that the current temperature of the base at the preset time is smaller than the maximum allowable operating temperature of the base or the difference between the current temperature of the base and the maximum allowable operating temperature of the base is larger than the preset threshold.
In an embodiment of the present invention, after waiting for the preset time, the step of further determining whether the current temperature of the base is less than the maximum allowable operating temperature of the base, and whether a difference between the current temperature of the base and the maximum allowable operating temperature of the base is less than a preset threshold further includes:
if the current temperature of the base is higher than the maximum allowable operation temperature of the base or the difference between the current temperature of the base and the maximum allowable operation temperature of the base is higher than a preset threshold value, whether the actual output capacity value is higher than B% of the required output capacity value is further judged. Wherein 0< B < 100.
And if the actual output capacity value is greater than B% of the required output capacity value, judging that the throttling device is blocked and has a fault, and prompting the user. For example, the blockage of the throttling device is informed through a display screen on an air conditioner controller, and the user can carry out maintenance on a maintenance worker after receiving the prompt of the blockage of the throttling device. The maintenance personnel can inform the user that the solution of the blockage of the throttling device is solved by the customer, or the maintenance personnel prepares corresponding troubleshooting equipment for maintenance aiming at the fault of the blockage of the throttling device, so that the fault is solved quickly, and the satisfaction degree of the user is improved.
And if the actual output capacity value is less than or equal to B% of the required output capacity value, controlling the air conditioner to stop, and judging as an inoperable blocking fault. The user can then perform a warranty repair to the service personnel. Maintenance personnel prepare corresponding troubleshooting equipment for maintenance aiming at the non-operational blocking fault, rapidly solve the fault and improve the satisfaction degree of users.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
1. when a refrigerant leakage fault occurs, whether an inoperable blocking fault occurs or not is judged according to the temperature of a base of a compressor, and the air conditioner is controlled to stop when the inoperable blocking fault occurs, so that the technical problem that the fault reason cannot be effectively judged when the refrigerant leaks is effectively solved, maintenance personnel can quickly maintain the air conditioner according to the fault reason, the normal use of the air conditioner is recovered, and the satisfaction degree of users is improved;
2. setting a refrigerant leakage frequency to judge whether the air conditioner can be recovered, and considering that the air conditioner has an inoperable blocking fault when the refrigerant leakage frequency is excessive, the air conditioner cannot effectively refrigerate/heat, needs to be shut down to wait for maintenance of a professional, and avoids the problem that the air conditioner cannot refrigerate/heat when being started, thereby wasting energy;
3. setting a capacity output ratio to accurately judge whether the current output capacity of the air conditioner is too low, thereby judging whether the blocking fault occurs due to the incapability of running;
4. when the difference between the actual output capacity value and the required output capacity of the air conditioner is within a certain range, the temperature of the coil is reduced by reducing the rotating frequency of the compressor, so that the temperature of the base is reduced, and whether the non-operational blocking fault occurs or the throttling device blocking fault occurs can be effectively judged by waiting for the base temperature of the compressor for a period of time and the highest allowable operating temperature of the base.
Based on the same inventive concept, the embodiment of the invention also provides the refrigerant leakage fault processing corresponding to the refrigerant leakage fault processing method.
Fig. 2 is a block diagram of a refrigerant leakage failure processing system according to an embodiment of the present invention. As shown in fig. 2, the system for processing refrigerant leakage fault according to the embodiment of the present invention includes an obtaining module 100, a determining module 200, and a control module 300.
The obtaining module 100 is configured to obtain refrigerant leakage information and a base temperature of the compressor. The judging module 200 is configured to judge whether a refrigerant leakage fault occurs according to the refrigerant leakage information, and further judge whether a base temperature of the compressor is greater than a maximum allowable base operating temperature after the refrigerant leakage fault occurs, and if the base temperature of the compressor is greater than the maximum allowable base operating temperature, judge that an inoperable blocking fault occurs and send a first signal to the control module 300. The control module 300 is used for controlling the air conditioner to stop according to the first signal.
In an embodiment of the present invention, the determining module 200 is further configured to, when it is determined that the refrigerant leakage fault occurs, add 1 to the number of leakage faults, determine whether the number of leakage faults is greater than a preset threshold, and further send a second signal to the control module 300 when the number of leakage faults is greater than the preset threshold. The control module 300 is further configured to control the air conditioner to shut down when the second signal is received.
In an embodiment of the present invention, the determining module 200 is further configured to send a first obtaining signal to the obtaining module 100 when the base temperature of the compressor is less than or equal to the maximum allowable base operating temperature. The obtaining module 100 is further configured to obtain an actual output capacity and a required output capacity value of the air conditioner according to the first obtaining signal. The determining module 200 is further configured to determine that the blocking fault is not operable when the actual output capacity value is less than a% of the required output capacity value, and send a third signal to the control module 300. The control module 300 is further configured to control the air conditioner to stop according to the third signal.
In one embodiment of the present invention, the determining module 200 is further configured to send a fourth signal to the control module 300 when the actual output capacity value is greater than A% of the requested output capacity value. The control module 300 is further configured to control the reduction of the rotational frequency of the compressor according to the fourth signal. The determining module 200 is further configured to send a second acquiring signal to the acquiring module 100 after the rotational frequency of the compressor is reduced for a first preset time. The obtaining module 100 is further configured to obtain a current temperature of the base according to the second obtaining signal, determine that the blocking fault is not operable when the current temperature of the base is less than the maximum allowable operating temperature of the base and a difference between the current temperature of the base and the maximum allowable operating temperature of the base is less than a preset threshold, and send a fourth signal to the control module 300. The control module 300 is further configured to control the air conditioner to stop according to the fourth signal.
In an embodiment of the present invention, the refrigerant leakage fault processing system further includes an alarm module. The determining module 200 is further configured to determine whether the current temperature of the base is less than the target operating temperature of the base after the second preset time of reducing the rotation frequency of the compressor, and when the current temperature of the base is less than the target operating temperature of the base, the control module 300 controls to increase the rotation frequency of the compressor and obtain the shell temperature of the compressor through the obtaining module 100. The judging module 200 is further configured to send an alarm signal to the control module 300 when the shell temperature of the compressor exceeds a preset shell temperature alarm threshold. The control module 300 is further configured to control the alarm module to alarm according to the alarm signal. The acquisition module 100 is further configured to continue to increase the rotational frequency of the compressor until the base temperature of the compressor reaches the target operating temperature of the seat when the shell temperature of the compressor does not exceed the preset shell temperature alarm threshold.
In an embodiment of the present invention, the system for processing the refrigerant leakage fault further includes a prompt module. The judging module 200 is further configured to further judge whether the actual output capability value is greater than B% of the required output capability value when the current temperature of the base is greater than the maximum allowable operating temperature of the base, or when the difference between the current temperature of the base and the maximum allowable operating temperature of the base is greater than a preset threshold, and judge that the throttling device is blocked and has a fault if the actual output capability value is greater than B% of the required output capability value, and send a prompt signal to the prompting module. The prompt module is used for prompting the user according to the prompt signal
In one embodiment of the invention, the magnitude of the reduced compressor rotational frequency is proportional to the difference between the base temperature of the compressor and the maximum allowable discharge operating temperature.
Since the refrigerant leakage fault processing system according to the embodiment of the present invention is a system used for implementing the refrigerant leakage fault processing method according to the embodiment of the present invention, a person skilled in the art can understand the specific structure and the deformation of the system based on the refrigerant leakage fault processing method described in the embodiment of the present invention, and thus details are not described herein. All systems adopted by the refrigerant leakage fault processing method of the embodiment of the invention belong to the protection scope of the invention.
Based on the same inventive concept, the embodiment of the invention also provides an air conditioner comprising the refrigerant leakage fault processing system. The air conditioner can adopt a corresponding treatment means according to the fault reason, whether the fault reason of refrigerant leakage is an inoperable blocking fault or not is realized, and maintenance personnel can quickly maintain and recover the normal use of the air conditioner according to the fault reason.
In addition, the application also discloses a computer readable storage medium, wherein a processing program of the refrigerant leakage fault is stored on the computer storage medium, and the processing program of the refrigerant leakage fault is executed by a processor to realize the processing method of the refrigerant leakage fault of the embodiment.
The embodiment of the application further provides equipment which comprises a memory, a processor and a processing program of the refrigerant leakage fault, wherein the processing program of the refrigerant leakage fault is stored in the memory and can be operated on the processor, and the processing method of the refrigerant leakage fault of the embodiment is realized when the processor executes the processing program of the refrigerant leakage fault.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (15)
1. A refrigerant leakage fault processing method is characterized by comprising the following steps:
judging whether a refrigerant leakage fault occurs;
if the refrigerant leakage fault occurs, further judging whether the temperature of the base of the compressor is higher than the maximum allowable operation temperature of the base;
if the temperature of the base of the compressor is higher than the maximum allowable operation temperature of the base, controlling the air conditioner to stop, judging the fault reason of refrigerant leakage to be the non-operational blocking fault, and if the temperature of the base of the compressor is lower than or equal to the maximum allowable operation temperature of the base, further acquiring the actual output capacity value of the air conditioner and acquiring the required output capacity value of the air conditioner;
if the actual output capacity value is smaller than A% of the required output capacity value, controlling the air conditioner to stop, and judging the failure reason of refrigerant leakage to be an inoperable blocking failure; if the actual output capacity value is greater than A% of the required output capacity value, the rotational frequency of the compressor is decreased,
wherein 0< a < 100.
2. The refrigerant leakage fault handling method of claim 1, further comprising:
when the refrigerant leakage fault is judged to occur, adding 1 to the leakage fault frequency;
judging whether the leakage fault frequency is greater than a preset threshold value or not;
and if the air quantity is larger than the preset threshold value, controlling the air conditioner to stop.
3. The refrigerant leakage failure processing method as claimed in claim 1, further comprising, after the step of reducing the rotational frequency of the compressor:
after waiting for a first preset time, further judging whether the current temperature of the base is less than the maximum allowable operation temperature of the base or not, and whether the difference between the current temperature of the base and the maximum allowable operation temperature of the base is less than a preset threshold or not;
and if the current temperature of the base is lower than the maximum allowable operating temperature of the base, and the difference between the current temperature of the base and the maximum allowable operating temperature of the base is lower than the preset threshold value, controlling the air conditioner to stop, and judging that the fault reason of refrigerant leakage is the non-operable blocking fault.
4. The refrigerant leakage failure processing method as claimed in claim 3, wherein between the step of decreasing the rotation frequency of the compressor if the actual output capacity value is greater than a% of the required output capacity value and the step of further determining whether the current temperature of the base is less than the maximum allowable operating temperature of the base after waiting for a first preset time and whether the difference between the current temperature of the base and the maximum allowable operating temperature of the base is less than a preset threshold, the method further comprises:
after waiting for a second preset time, judging whether the current temperature of the base is lower than the target operation temperature of the base or not;
if the current temperature of the base is lower than the target operation temperature of the base, increasing the rotation frequency of the compressor and acquiring the shell temperature of the compressor;
if the shell temperature of the compressor exceeds a preset shell temperature alarm threshold value, alarming and stopping increasing the rotation frequency of the compressor;
if the shell temperature of the compressor does not exceed a preset shell temperature alarm threshold value, continuing to increase the rotation frequency of the compressor until the base temperature of the compressor reaches the target operation temperature of the base;
and after waiting for the first preset time, further judging whether the current temperature of the base is lower than the maximum allowable operation temperature of the base or not, and whether the difference between the current temperature of the base and the maximum allowable operation temperature of the base is lower than a preset threshold or not.
5. The method for handling refrigerant leakage failure according to claim 3, further comprising, after the step of waiting for a first preset time, determining whether the current temperature of the base is lower than the maximum allowable operating temperature of the base, and whether a difference between the current temperature of the base and the maximum allowable operating temperature of the base is lower than a preset threshold, the method further comprising:
if the current temperature of the base is higher than the maximum allowable operation temperature of the base, or the difference between the current temperature of the base and the maximum allowable operation temperature of the base is higher than the preset threshold, further judging whether the actual output capacity value is higher than B% of the required output capacity value;
if the actual output capacity value is larger than B% of the required output capacity value, judging the fault reason of refrigerant leakage because of the blockage fault of the throttling device, and prompting a user;
if the actual output capacity value is less than or equal to B% of the required output capacity value, controlling the air conditioner to stop, and judging the failure reason of refrigerant leakage to be an inoperable blocking failure;
wherein 0< B < 100.
6. The method as claimed in claim 3, wherein the magnitude of the reduced rotational frequency of the compressor is proportional to the difference between the base temperature of the compressor and the maximum allowable discharge temperature.
7. A refrigerant leakage fault handling system, comprising:
the acquisition module is used for acquiring refrigerant leakage information and the base temperature of the compressor;
the judging module is used for judging whether a refrigerant leakage fault occurs according to the refrigerant leakage information, further judging whether the temperature of a base of the compressor is higher than the highest allowable operating temperature of the base after the refrigerant leakage fault occurs, if the temperature of the base of the compressor is higher than the highest allowable operating temperature of the base, judging that the fault source of the refrigerant leakage is an inoperable blocking fault and sending a first signal to the control module, sending a first acquisition signal to the acquiring module when the temperature of the base of the compressor is lower than or equal to the highest allowable operating temperature of the base, acquiring the actual output capacity and the required output capacity value of the air conditioner according to the first acquisition signal, and judging that the fault source of the refrigerant leakage is the inoperable blocking fault when the actual output capacity value is lower than A% of the required output capacity value, the judging module is also used for sending a fourth signal to the control module when the actual output capacity value is greater than A% of the required output capacity value;
the control module is used for controlling the air conditioner to stop according to the first signal, and the control module is also used for controlling and reducing the rotation frequency of the compressor according to the fourth signal.
8. The refrigerant leakage failure processing system according to claim 7, wherein the determining module is further configured to add 1 to the number of leakage failures when the refrigerant leakage failure is determined to occur, determine whether the number of leakage failures is greater than a preset threshold, and further send a second signal to the control module when the number of leakage failures is greater than the preset threshold, and the control module is further configured to control the air conditioner to stop when the second signal is received.
9. The refrigerant leakage fault handling system according to claim 8, wherein the determining module is further configured to send a second acquisition signal to the acquiring module after reducing the rotation frequency of the compressor for a first preset time, the acquiring module is further configured to acquire a current temperature of a base according to the second acquisition signal, determine that a fault cause of refrigerant leakage is an inoperable blocking fault when the current temperature of the base is lower than the maximum allowable operation temperature of the base and a difference between the current temperature of the base and the maximum allowable operation temperature of the base is lower than a preset threshold, and send a fourth signal to the control module, and the control module is further configured to control the air conditioner to stop according to the fourth signal.
10. The refrigerant leakage failure handling system of claim 9, further comprising:
an alarm module;
the judging module is further used for judging whether the current temperature of the base is lower than the target operation temperature of the base or not after the second preset time of reducing the rotation frequency of the compressor; when the current temperature of the base is lower than the target operation temperature of the base, the control module controls the rotation frequency of the compressor to be increased, and the shell temperature of the compressor is obtained through the obtaining module; the judging module is also used for sending an alarm signal to the control module when the shell temperature of the compressor exceeds a preset shell temperature alarm threshold value, and the control module is also used for controlling the alarm module to alarm according to the alarm signal; the obtaining module is further used for continuously increasing the rotation frequency of the compressor when the temperature of the base of the compressor does not exceed the preset shell temperature alarm threshold value until the temperature of the base of the compressor reaches the target operation temperature of the base.
11. The refrigerant leakage failure handling system of claim 9, further comprising:
the prompting module is used for prompting the user according to the prompting signal;
the judgment module is further configured to further judge whether the actual output capacity value is greater than B% of the required output capacity value when the current temperature of the base is greater than the maximum allowable operating temperature of the base or a difference between the current temperature of the base and the maximum allowable operating temperature of the base is greater than the preset threshold, and if the actual output capacity value is greater than B% of the required output capacity value, judge a failure cause of refrigerant leakage that is a throttling device blockage failure, and the prompt module sends the prompt signal.
12. The refrigerant leakage failure handling system of claim 9, wherein the magnitude of the reduced compressor rotational frequency is proportional to a difference between a base temperature of the compressor and a maximum allowable discharge operating temperature.
13. An air conditioner characterized by comprising the refrigerant leakage failure processing system according to any one of claims 7 to 12.
14. A computer-readable storage medium, wherein a refrigerant leakage failure processing program is stored on the computer-readable storage medium, and when executed by a processor, the refrigerant leakage failure processing program implements the refrigerant leakage failure processing method according to any one of claims 1 to 6.
15. An apparatus, comprising a memory, a processor, and a refrigerant leakage failure processing program stored in the memory and operable on the processor, wherein the processor implements the refrigerant leakage failure processing method according to any one of claims 1 to 6 when executing the refrigerant leakage failure processing program.
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| JP2011179768A (en) * | 2010-03-02 | 2011-09-15 | Mitsubishi Electric Corp | Drive control device for compressor for air conditioner |
| CN106352614A (en) * | 2016-11-03 | 2017-01-25 | 广东美的暖通设备有限公司 | Air conditioner and refrigerant cooling control method for same |
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| JP5040975B2 (en) * | 2008-09-30 | 2012-10-03 | ダイキン工業株式会社 | Leakage diagnostic device |
| CN101738037A (en) * | 2008-11-24 | 2010-06-16 | 乐金电子(天津)电器有限公司 | Protector preventing discharge temperature of air conditioner compressor from being too high |
| CN103884480B (en) * | 2014-03-14 | 2016-07-06 | 广东美的制冷设备有限公司 | Coolant leakage detection method, refrigerant leakage detecting system and air-conditioner |
| CN107421151B (en) * | 2017-07-27 | 2020-02-28 | 广东美的制冷设备有限公司 | Air conditioner and refrigerant leakage detection method and device thereof |
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| JP2011179768A (en) * | 2010-03-02 | 2011-09-15 | Mitsubishi Electric Corp | Drive control device for compressor for air conditioner |
| CN106352614A (en) * | 2016-11-03 | 2017-01-25 | 广东美的暖通设备有限公司 | Air conditioner and refrigerant cooling control method for same |
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