CN114935201A - Air conditioner fault detection method and device, air conditioner and storage medium - Google Patents

Air conditioner fault detection method and device, air conditioner and storage medium Download PDF

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Publication number
CN114935201A
CN114935201A CN202210677210.9A CN202210677210A CN114935201A CN 114935201 A CN114935201 A CN 114935201A CN 202210677210 A CN202210677210 A CN 202210677210A CN 114935201 A CN114935201 A CN 114935201A
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China
Prior art keywords
temperature
value
air conditioner
temperature difference
fault
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Chinese (zh)
Inventor
刘湘
张琴兰
徐经碧
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Guangdong Wanzhenzi Intelligent Control Technology Co ltd
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Guangdong Wanzhenzi Intelligent Control Technology Co ltd
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Priority to CN202210677210.9A priority Critical patent/CN114935201A/en
Publication of CN114935201A publication Critical patent/CN114935201A/en
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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
    • F24F11/49—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring ensuring correct operation, e.g. by trial operation or configuration checks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The application provides an air conditioner fault detection method, an air conditioner fault detection device, an air conditioner and a storage medium, wherein the method comprises the following steps: responding to a fault detection instruction, acquiring outdoor temperature, determining a target operation mode of the air conditioner according to the outdoor temperature, and further acquiring a first temperature difference threshold value in the target operation mode; after the air conditioner is started in a target operation mode, acquiring a first temperature value through a temperature sensing bulb, and after the air conditioner operates for a first time period, acquiring a second temperature value through the temperature sensing bulb; and if the temperature difference value between the first temperature value and the second temperature value is within the first temperature difference threshold value, determining the plugging fault of the temperature sensing bulb. According to the method, a first temperature difference threshold value used for detecting the fault of the temperature sensing bulb is obtained based on the operation mode, so that the influence of outdoor temperature and the operation mode on fault detection is reduced, the accuracy of fault detection of the air conditioner is improved, whether the plugging of the temperature sensing bulb breaks down or not is determined by the temperature difference obtained by the previous detection and the next detection, and the fault position and the fault reason are quickly located.

Description

Air conditioner fault detection method and device, air conditioner and storage medium
Technical Field
The application relates to the technical field of control, in particular to an air conditioner fault detection method and device, an air conditioner and a computer readable storage medium (storage medium for short).
Background
At present, after the air conditioner is installed, an installer generally needs to simply test whether the air conditioner can normally operate, but the problem that the operation fault of the air conditioner is caused by improper operation in a plurality of installation processes is difficult to directly discover, the time spent on searching the fault position and the fault reason is long, the accuracy is poor, and the air conditioner cannot be installed and maintained quickly and accurately.
Disclosure of Invention
In view of the above, it is necessary to provide an air conditioner fault detection method, device, air conditioner and storage medium for solving the above technical problems.
In a first aspect, the present application provides a method for detecting a fault of an air conditioner, the method including:
responding to a fault detection instruction, and acquiring outdoor temperature;
determining a target operation mode of the air conditioner according to the outdoor temperature, and acquiring a first temperature difference threshold value of the detection of the plugging fault of the temperature sensing bulb in the target operation mode;
starting the air conditioner in a target operation mode, and collecting a first temperature value through a temperature sensing bulb;
after the air conditioner runs for a first time period, collecting a second temperature value through a temperature sensing bulb;
and if the temperature difference value between the first temperature value and the second temperature value is within the first temperature difference threshold value, determining the plugging fault of the temperature sensing bulb.
In some embodiments of the present application, the thermal bulb comprises at least an inner coil thermal bulb, an outer coil thermal bulb, and an exhaust port thermal bulb;
the first temperature value at least comprises a first inner coil temperature value, a first outer coil temperature value and a first exhaust temperature value;
the second temperature value includes at least a second inner coil temperature value, a second outer coil temperature value, and a second exhaust temperature value.
In some embodiments of the present application, determining a plugging fault of the temperature sensing bulb if a temperature difference between the first temperature value and the second temperature value is within a first temperature difference threshold includes:
if the temperature difference value between the first inner coil temperature value and the second inner coil temperature value is within a first temperature difference threshold value, determining that the temperature sensing bulb of the inner coil is in plugging fault; and/or
If the temperature difference value between the first outer coil temperature value and the second outer coil temperature value is within a first temperature difference threshold value, determining that the outer coil temperature sensing bulb is in plugging fault; and/or
And if the temperature difference value between the first exhaust temperature value and the second exhaust temperature value is within the first temperature difference threshold value, determining the plugging fault of the exhaust port temperature sensing bulb.
In some embodiments of the present application, after determining the target operation mode of the air conditioner according to the outdoor temperature, the method further includes:
acquiring a second temperature difference threshold value of refrigerant leakage detection in a target operation mode;
after gathering the second temperature value through the temperature sensing package, still include:
if the temperature difference value between the first temperature value and the second temperature value is not within the first temperature difference threshold value, collecting an indoor temperature value and an outdoor temperature value;
acquiring a first temperature difference value between an indoor temperature value and a second inner coil temperature value, a second temperature difference value between an outdoor temperature value and a second outer coil temperature value, a third temperature difference value between the first inner coil temperature value and the second inner coil temperature value, and a fourth temperature difference value between the first outer coil temperature value and the second outer coil temperature value;
and if any one of the first temperature difference value, the second temperature difference value, the third temperature difference value and the fourth temperature difference value is within the second temperature difference threshold value, determining that the air conditioner refrigerant leaks.
In some embodiments of the present application, after determining the target operation mode of the air conditioner according to the outdoor temperature, the method further includes:
acquiring a third temperature difference threshold value of the fault detection of the electronic expansion valve in the target operation mode;
after gathering the second temperature value through the temperature sensing package, still include:
if the temperature difference value between the first temperature value and the second temperature value is not within the first temperature difference threshold value, controlling to increase the opening degree of the electronic expansion valve;
after the air conditioner operates for a second time, collecting a third exhaust temperature value through the exhaust port temperature sensing bulb;
and if the exhaust temperature difference between the second exhaust temperature value and the third exhaust temperature value is not within the third temperature threshold value, determining that the electronic expansion valve has a fault.
In some embodiments of the present application, determining a target operation mode of an air conditioner according to an outdoor temperature includes:
if the outdoor temperature is larger than a preset outdoor temperature threshold value, determining that the target operation mode of the air conditioner is a refrigeration mode;
and if the outdoor temperature is not greater than the outdoor temperature threshold value, determining that the target operation mode of the air conditioner is a heating mode.
In some embodiments of the present application, after the collecting the first temperature value by the thermal bulb, the method further includes:
acquiring an effective range of a temperature value of the temperature sensing bulb;
if the first temperature value is not within the effective range of the temperature value, determining that the temperature sensing bulb has a fault;
and if the first temperature value is within the effective temperature range, executing the step of collecting a second temperature value through the temperature sensing bulb after the air conditioner runs for a first time.
In a second aspect, the present application provides an air conditioner fault detection apparatus, comprising:
the first temperature acquisition module is used for responding to the fault detection instruction and acquiring the outdoor temperature;
the operation mode determining module is used for determining a target operation mode of the air conditioner according to the outdoor temperature and acquiring a first temperature difference threshold value of the detection of the plugging fault of the temperature sensing bulb in the target operation mode;
the second temperature acquisition module is used for starting the air conditioner in a target operation mode and acquiring a first temperature value through the temperature sensing bulb;
the third temperature acquisition module is used for acquiring a second temperature value through the temperature sensing bulb after the air conditioner operates for the first time;
and the fault information acquisition module is used for determining the plugging fault of the temperature sensing bulb if the temperature difference value between the first temperature value and the second temperature value is within the first temperature difference threshold value.
In a third aspect, the present application further provides an air conditioner, comprising:
one or more processors;
a memory; and
one or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the processor to implement the air conditioner fault detection method.
In a fourth aspect, the present application also provides a computer readable storage medium having a computer program stored thereon, the computer program being loaded by a processor to perform the steps in the air conditioner fault detection method.
In a fifth aspect, embodiments of the present application provide a computer program product or a computer program comprising computer instructions stored in a computer-readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions to cause the computer device to perform the method provided by the first aspect.
According to the air conditioner fault detection method and device, the air conditioner and the storage medium, the outdoor temperature is obtained by responding to the fault detection instruction, the target operation mode of the air conditioner is determined according to the outdoor temperature, and the first temperature difference threshold value of the plug-in fault detection of the temperature sensing bulb in the target operation mode is obtained; after the air conditioner is started in a target operation mode, acquiring a first temperature value through a temperature sensing bulb, and after the air conditioner operates for a first time period, acquiring a second temperature value through the temperature sensing bulb; and if the temperature difference value between the first temperature value and the second temperature value is within the first temperature difference threshold value, determining the plugging fault of the temperature sensing bulb. The method comprises the steps of determining an operation mode of the air conditioner by acquiring outdoor temperature, then acquiring a first temperature difference threshold value for detecting faults of the temperature sensing bulb based on the operation mode, reducing the influence of the outdoor temperature and the operation mode on fault detection, improving the accuracy of fault detection of the air conditioner, and subsequently determining whether a temperature difference value obtained by twice detection before and after the temperature sensing bulb is within the first temperature difference threshold value or not to determine whether plugging of the temperature sensing bulb arranged on the air conditioner component is in fault or not, so that the fault position and the fault reason are quickly positioned.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a scenario of a fault detection method for an air conditioner in an embodiment of the present application;
FIG. 2 is a schematic flow chart illustrating a method for detecting faults of an air conditioner according to an embodiment of the present disclosure;
FIG. 3 is a schematic flow chart illustrating another method for detecting faults of an air conditioner according to an embodiment of the present disclosure;
fig. 4 is a schematic structural view of a failure detection device of an air conditioner in the embodiment of the present application;
fig. 5 is a schematic structural diagram of a computer device in an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, the word "for example" is used to mean "serving as an example, instance, or illustration". Any embodiment described herein as "for example" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the invention. In the following description, details are set forth for the purpose of explanation. It will be apparent to one of ordinary skill in the art that the present invention may be practiced without these specific details. In other instances, well-known structures and processes are not shown in detail to avoid obscuring the description of the invention with unnecessary detail. Thus, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.
In the embodiment of the present application, it should be further explained that the method for detecting a fault of an air conditioner provided in the embodiment of the present application is applied to the air conditioner. As shown in fig. 1, the air conditioner includes at least an indoor unit 110 and an outdoor unit 120; the indoor unit 110 is connected to the outdoor unit 120 through a pipe, the indoor unit includes at least an indoor fan and an air guide plate corresponding to the indoor fan, and the outdoor unit 120 includes at least a compressor. The indoor unit 110 can receive a control signal from a remote controller or a control panel, and perform a series of functions of an air conditioner indoor unit, such as cooling, heating, dehumidifying, and dedusting. The outdoor unit 120 can perform operations such as condensation, heat dissipation, and air discharge in cooperation with the indoor unit 110.
Those skilled in the art can understand that the application environment shown in fig. 1 is only one application scenario related to the present application, and does not constitute a limitation on the application scenario of the present application, for example, other application environments may further include more or fewer indoor units than those shown in fig. 1. It should be further noted that the scenario diagram shown in fig. 1 is only an example, and the air conditioner control method and the application scenario described in the embodiment of the present invention are for more clearly illustrating the technical solution of the embodiment of the present invention, and do not form a limitation on the technical solution provided in the embodiment of the present invention.
Referring to fig. 2, an embodiment of the present application provides a method for detecting a fault of an air conditioner, which is mainly exemplified by applying the method to the air conditioner in fig. 1, and the method includes steps S210 to S250, which are specifically as follows:
and S210, responding to the fault detection instruction, and acquiring the outdoor temperature.
The fault detection instruction is used for indicating the air conditioner to enter a fault detection function. Specifically, the fault detection instruction may be sent to the air conditioner by the air conditioner remote controller, and after receiving the fault detection instruction, the air conditioner responds to the fault detection instruction to enter a fault detection process, so as to obtain the outdoor temperature.
Further, a fault detection operation can be set on the air conditioner remote controller, such as a specific key or a combined key, when a user inputs the fault detection operation through the air conditioner remote controller, the air conditioner remote controller triggers a fault detection instruction to be sent to the air conditioner, and after the air conditioner receives the fault detection instruction, the air conditioner responds to the fault detection instruction, controls the buzzer to send out a prompt tone and controls the display panel to display prompt information (such as a fault detection mode identifier), and enters a fault detection flow to acquire the outdoor temperature.
S220, determining a target operation mode of the air conditioner according to the outdoor temperature, and acquiring a first temperature difference threshold value of the detection of the plugging fault of the temperature sensing bulb in the target operation mode.
The operation mode of the air conditioner includes, but is not limited to, a heating mode and a cooling mode.
In one embodiment, determining the target operation mode of the air conditioner according to the outdoor temperature may specifically include: if the outdoor temperature is larger than a preset outdoor temperature threshold value, determining that the target operation mode of the air conditioner is a refrigeration mode; and if the outdoor temperature is not greater than the outdoor temperature threshold value, determining that the target operation mode of the air conditioner is a heating mode.
Specifically, the outdoor temperature threshold may be set in advance, for example, may be set to 20 degrees celsius; after the current outdoor temperature is obtained, when the outdoor temperature is greater than the outdoor temperature threshold value, the air conditioner is controlled to start to operate in a cooling mode, and when the outdoor temperature is less than or equal to the outdoor temperature threshold value, the air conditioner is controlled to start to operate in a heating mode.
The temperature sensing bulb is a temperature sensor for detecting the temperature of different parts of the air conditioner; in one embodiment, the bulb includes at least an inner coil bulb, an outer coil bulb, and an exhaust bulb.
The first temperature difference threshold value is used for detecting whether the temperature sensing bulb is normally inserted. Specifically, the temperature difference variation range of the thermal bulb under the condition that the thermal bulb is not inserted in place can be tested in advance in different operation modes to determine the first temperature difference threshold. It can be understood that different outdoor temperatures or different operation modes affect the temperature change of different components such as the temperatures of the exhaust port and the coil before and after or during the operation of the air conditioner, and the same first temperature difference threshold is set in any operation mode, which often results in the accuracy of the fault detection of the air conditioner being reduced.
Specifically, in the running process of the air conditioner, the temperature changes of different components are often influenced by the outdoor temperature and the running mode, after the outdoor temperature is obtained, the running mode of the air conditioner is determined according to the outdoor temperature, then the first temperature difference threshold value used for detecting the fault of the thermal bulb is obtained based on the running mode, and the accuracy of fault detection of the air conditioner is effectively improved.
And S230, starting the air conditioner in a target operation mode, and collecting a first temperature value through the thermal bulb.
And S240, collecting a second temperature value through the temperature sensing bulb after the air conditioner operates for the first time.
The first time period may be set according to actual conditions, and may be set to 5 minutes, 10 minutes, and the like.
The first temperature value is an initial temperature value detected by the temperature sensing bulb when the air conditioner starts to operate; the second temperature value is a real-time temperature value detected by the temperature sensing bulb after the temperature sensing bulb is started and operated for a first time.
As mentioned above, the thermal bulb at least comprises an inner coil thermal bulb, an outer coil thermal bulb and an exhaust port thermal bulb; accordingly, in one embodiment, the first temperature value includes at least a first inner coil temperature value, a first outer coil temperature value, and a first exhaust temperature value, and the second temperature value includes at least a second inner coil temperature value, a second outer coil temperature value, and a second exhaust temperature value.
S250, if the temperature difference value between the first temperature value and the second temperature value is within the first temperature difference threshold value, determining the plugging fault of the temperature sensing bulb.
After the first temperature value and the second temperature value are obtained, the temperature difference value between the first temperature value and the second temperature value can be obtained, the temperature difference value is compared with a first temperature difference threshold value, and whether the temperature sensing bulb is in plugging fault or not is determined according to the comparison result. Specifically, the temperature difference value can reflect the temperature change value of the temperature sensing bulb of the inner coil within the first time period, if the temperature difference value is within the first temperature difference threshold value, namely the temperature change of the temperature sensing bulb is extremely small, it is judged that the temperature sensing bulb of the inner coil is not inserted in place, and the temperature sensing bulb is in an insertion fault; if the temperature difference value is not within the first temperature difference threshold value, namely the temperature change of the temperature sensing bulb conforms to a conventional value, the temperature sensing bulb of the inner coil is judged not to be inserted in place, the temperature sensing bulb is inserted without a fault, and the temperature sensing bulb insertion fault detection is not carried out any more before the next fault detection flow is entered again.
Furthermore, after the plugging fault of the temperature-sensing bulb is determined, the air conditioner can be controlled to stop, and the display panel is controlled to display a fault code corresponding to the plugging fault of the temperature-sensing bulb, so that maintenance personnel or installation personnel can be prompted to carry out fault removal.
In an embodiment, if a temperature difference between the first temperature value and the second temperature value is within a first temperature difference threshold, determining the insertion failure of the thermal bulb may specifically include: if the temperature difference value between the first inner coil temperature value and the second inner coil temperature value is within a first temperature difference threshold value, determining that the temperature sensing bulb of the inner coil is in plugging fault; and/or determining the insertion fault of the temperature sensing bulb of the outer coil pipe if the temperature difference value between the temperature value of the first outer coil pipe and the temperature value of the second outer coil pipe is within a first temperature difference threshold value; and/or determining the plugging fault of the temperature sensing bulb of the exhaust port if the temperature difference value between the first exhaust temperature value and the second exhaust temperature value is within the first temperature difference threshold value.
The temperature difference between the first inner coil temperature value and the second inner coil temperature value can reflect the temperature change value of the inner coil temperature sensing package in the first time period, the temperature difference between the first outer coil temperature value and the second outer coil temperature value can reflect the temperature change value of the outer coil temperature sensing package in the first time period, and the temperature difference between the first exhaust temperature value and the second exhaust temperature value can reflect the temperature change value of the exhaust port temperature sensing package in the first time period; if the temperature difference value corresponding to a certain temperature sensing bulb (such as the inner coil temperature sensing bulb) in each temperature sensing bulb is within the first temperature difference threshold value, namely the temperature change of the temperature sensing bulb is extremely small, judging that the temperature sensing bulb is not inserted in place; and if the temperature difference values corresponding to all the temperature sensing bulbs in each temperature sensing bulb are outside the first temperature difference threshold value, namely the temperature change of each temperature sensing bulb conforms to a conventional value, judging that all the temperature sensing bulbs are inserted in place.
The temperature difference value is calculated by obtaining the temperature values obtained by detecting the temperature sensing bulb arranged at the exhaust port of the air conditioner for two times, namely the front and the back, of the inner coil, the outer coil or the compressor, and then whether the temperature difference value is within the first temperature difference threshold value is judged so as to determine whether the plugging of the temperature sensing bulb at the exhaust port of the inner coil, the outer coil or the compressor in the air conditioner fails, the accurate positioning of the fault position and the fault reason is realized, and the accuracy of the fault detection of the air conditioner is effectively improved.
According to the air conditioner fault detection method, the outdoor temperature is obtained by responding to the fault detection instruction, the target operation mode of the air conditioner is determined according to the outdoor temperature, and the first temperature difference threshold value of the plug-in fault detection of the temperature sensing bulb in the target operation mode is obtained; after the air conditioner is started in a target operation mode, acquiring a first temperature value through a temperature sensing bulb, and after the air conditioner operates for a first time period, acquiring a second temperature value through the temperature sensing bulb; and if the temperature difference value between the first temperature value and the second temperature value is within the first temperature difference threshold value, determining the plugging fault of the temperature sensing bulb. The method comprises the steps of determining an operation mode of the air conditioner by acquiring outdoor temperature, then acquiring a first temperature difference threshold value for detecting a temperature sensing bulb fault based on the operation mode, reducing the influence of the outdoor temperature and the operation mode on fault detection, improving the accuracy of the fault detection of the air conditioner, and subsequently determining whether the temperature difference value obtained by two detections before and after the temperature sensing bulb is within the first temperature difference threshold value, so as to determine whether the plugging of the temperature sensing bulb arranged on the air conditioner component is in fault, thereby realizing the rapid positioning of the fault position and the fault reason.
In one embodiment, after the collecting the first temperature value by the thermal bulb, the method further comprises: acquiring an effective range of a temperature value of the temperature sensing bulb; if the first temperature value is not within the effective range of the temperature value, determining that the temperature sensing bulb has a fault; and if the first temperature value is within the effective temperature range, executing the step of collecting a second temperature value through the temperature sensing bulb after the air conditioner runs for a first time.
The temperature value effective range refers to the observation capability of the thermal bulb, and is used for effectively judging whether the temperature value obtained by observation is reasonable or not, if the first temperature value is in the temperature effective range, namely the temperature data is effective data, subsequent fault detection can be carried out, and if the temperature value is invalid data, the open circuit fault of the thermal bulb is confirmed.
Furthermore, after the open circuit of the temperature sensing bulb is determined, the air conditioner can be controlled to stop, and the display panel is controlled to display a fault code corresponding to the open circuit fault of the temperature sensing bulb, so that maintenance personnel or installation personnel can be prompted to reinstall the temperature sensing bulb to achieve fault removal.
In one embodiment, after determining the operation mode of the air conditioner according to the outdoor temperature, the method further comprises: acquiring a second temperature difference threshold value of refrigerant leakage detection in a target operation mode; after gathering the second temperature value through the temperature sensing package, still include: if the temperature difference value between the first temperature value and the second temperature value is not within the first temperature difference threshold value, collecting an indoor temperature value and an outdoor temperature value; acquiring a first temperature difference value between an indoor temperature value and a second inner coil temperature value, a second temperature difference value between an outdoor temperature value and a second outer coil temperature value, a third temperature difference value between a first inner coil temperature value and a second inner coil temperature value, and a fourth temperature difference value between a first outer coil temperature value and a second outer coil temperature value; and if any one of the first temperature difference value, the second temperature difference value, the third temperature difference value and the fourth temperature difference value is within a second temperature difference threshold value, determining that the air conditioner refrigerant leaks.
And the second temperature difference threshold is used for detecting whether the refrigerant leaks or not. Specifically, the temperature difference variation ranges of the temperature sensing packs arranged on different components of the air conditioner can be tested in different operation modes in advance to determine the second temperature difference threshold value. It can be understood that different outdoor temperatures or different operation modes affect the temperature change of different components such as the exhaust port and the coil pipe before and after the air conditioner works or in the working process, and the same second temperature difference threshold value is set in any operation mode, which often results in the accuracy of the fault detection of the air conditioner being reduced.
If the temperature difference value between the first temperature value and the second temperature value is judged not to be within the first temperature difference threshold value, the temperature sensing bulb is determined to be normally plugged, the plugging of the temperature sensing bulb is faultless, and the temperature value detected by the temperature sensing bulb is an accurate temperature value; at this time, an indoor temperature value and an outdoor temperature value can be acquired through the indoor temperature sensor and the outdoor temperature sensor, and then a first temperature difference value between the indoor temperature value and the second inner coil temperature value, a second temperature difference value between the outdoor temperature value and the second outer coil temperature value, a third temperature difference value between the first inner coil temperature value and the second inner coil temperature value, and a fourth temperature difference value between the first outer coil temperature value and the second outer coil temperature value are calculated; and then, respectively judging whether the first temperature difference value, the second temperature difference value, the third temperature difference value and the fourth temperature difference value are within a second temperature difference threshold value or not so as to detect the refrigerant leakage.
Specifically, when any one of the first temperature difference value, the second temperature difference value, the third temperature difference value and the fourth temperature difference value is judged to be in the second temperature difference threshold value, the refrigerant quantity is judged to be insufficient, and the leakage of the refrigerant of the air conditioner is determined; and when all the temperature difference values are judged to be out of the second temperature difference threshold value, judging that the refrigerant quantity is sufficient, determining that the air conditioner has no refrigerant leakage fault, and not detecting the refrigerant leakage before entering the fault detection process again next time.
Further, after the leakage of the refrigerant of the air conditioner is determined, the air conditioner can be controlled to stop, and a display panel is controlled to display a fault code corresponding to the refrigerant leakage so as to prompt maintenance personnel or installation personnel to carry out fault removal.
In one embodiment, after determining the operation mode of the air conditioner according to the outdoor temperature, the method further comprises: acquiring a third temperature difference threshold value of the fault detection of the electronic expansion valve in a target operation mode; after gathering the second temperature value through the temperature sensing package, still include: if the temperature difference value between the first temperature value and the second temperature value is not within the first temperature difference threshold value, controlling to increase the opening degree of the electronic expansion valve; after the air conditioner operates for a second time, collecting a third exhaust temperature value through the exhaust port temperature sensing bulb; and if the exhaust temperature difference between the second exhaust temperature value and the third exhaust temperature value is not within the third temperature threshold value, determining that the electronic expansion valve has a fault.
And the third temperature threshold is used for detecting whether the electronic expansion valve is blocked. Specifically, the variation range of the exhaust port temperature in the case of increasing the opening degree of the electronic expansion valve may be tested in advance in different operation modes to determine the third temperature difference threshold value. It can be understood that different outdoor temperatures or different operation modes affect the temperature change of the exhaust port before and after the air conditioner works or in the working process, and the same first temperature difference threshold value is set in any operation mode, which often results in the accuracy of the fault judgment of the electronic expansion valve being reduced.
If the temperature difference value between the first temperature value and the second temperature value is judged not to be within the first temperature difference threshold value, the temperature sensing bulb is determined to be normally plugged, the plugging of the temperature sensing bulb is faultless, and the temperature value detected by the temperature sensing bulb is an accurate temperature value; at this time, the opening degree of the electronic expansion valve may be controlled to be increased, and in particular, the electronic expansion valve may be controlled to be increased by a preset number of steps at a preset speed, so as to achieve the control of increasing the opening degree of the electronic expansion valve,
the second time period may be set according to actual conditions, and may be set to 15 minutes, 30 minutes, and the like, for example. Specifically, after the opening degree of the electronic expansion valve is increased, the air conditioner stably operates for a second time period by the opening degree of the electronic expansion valve, and then a third exhaust temperature value is collected through an exhaust port temperature sensing bulb; and further calculating an exhaust temperature difference value between the second exhaust temperature value and the third exhaust temperature value, and then judging whether the exhaust temperature difference value falls within a third temperature difference threshold value or not so as to detect the fault of the electronic expansion valve.
Specifically, when the exhaust temperature difference value is judged to be at the third temperature difference threshold value, the electronic expansion valve is judged to be stuck, and the fault of the electronic expansion valve is determined; and when all the temperature difference values are judged to be out of the third temperature difference threshold value, judging that the electronic expansion valve works normally, determining that the air conditioner has no electronic expansion valve fault, and not performing the fault detection on the electronic expansion valve before entering the fault detection process again next time.
Furthermore, after the electronic expansion valve is determined to be in fault, the air conditioner can be controlled to stop, and the display panel is controlled to display a fault code corresponding to the fault of the electronic expansion valve so as to prompt maintenance personnel or installation personnel to carry out fault removal.
The air conditioner fault detection method is further described with reference to a specific application scenario. Specifically, the air conditioner fault detection method is applied to an air conditioner which comprises but is not limited to the following temperature sensors:
an indoor temperature sensor for detecting an indoor temperature and an indoor humidity;
an outdoor temperature sensor for detecting an outdoor temperature;
the inner coil pipe thermal bulb is used for detecting the temperature of the inner coil pipe;
the outer coil pipe temperature sensing bulb is used for detecting the temperature of the outer coil pipe;
and the exhaust port temperature sensing bulb is used for detecting the temperature of the exhaust port of the compressor.
In addition, the outdoor temperature threshold is denoted as T Is provided with And temperature thresholds corresponding to different outdoor temperatures in different operation modes are recorded in the storage area of the air conditioner, and the temperature thresholds are used for detecting faults of different parts of the air conditioner.
Referring to fig. 3, the air conditioner may perform the following steps of the fault detection process as shown in fig. 3:
s301, responding to a fault detection instruction, entering a fault detection mode, controlling a buzzer to give out prompt tones, controlling a display panel to display prompt messages, and acquiring outdoor temperature.
When the air conditioner is in a shutdown state, a user inputs the fault detection operation through the air conditioner remote controller, if a remote control combination key is input, the air conditioner remote controller triggers a fault detection instruction to be sent to the air conditioner, after the air conditioner receives the fault detection instruction, the air conditioner responds to the fault detection instruction, the buzzer is controlled to sound for 2, the display panel is controlled to display a self-checking mode mark, and the air conditioner enters a fault detection mode. After the air conditioner enters a fault detection mode, the outdoor temperature is collected through an outdoor temperature sensor.
S302, determining a target operation mode of the air conditioner according to the outdoor temperature, and acquiring a first temperature difference threshold, a second temperature difference threshold, a third temperature difference threshold and a temperature value effective range of the temperature sensing bulb, wherein the first temperature difference threshold, the second temperature difference threshold and the third temperature difference threshold are used for detecting the plugging fault of the temperature sensing bulb in the target operation mode.
The air conditioner automatically judges whether to enter a refrigeration mode or a heating mode according to the collected outdoor temperature; specifically, if the outdoor temperature is greater than the outdoor temperature threshold, it is noted as T Is provided with Automatically entering a refrigeration mode for self-checking; if the outdoor temperature is less than or equal to the outdoor temperature threshold, recording as T Is provided with And automatically entering a heating mode for self-checking.
And S303, starting the air conditioner in a target operation mode, and collecting a first inner coil temperature value, a first outer coil temperature value and a first exhaust temperature value through the thermal bulb.
The air conditioner is started in a target operation mode, the compressor is controlled to operate to the working frequency of the fault detection mode at a preset speed, and other loads are executed according to normal logic; simultaneously, gather first interior coil pipe temperature value through interior coil pipe temperature sensing bulb, gather first outer coil pipe temperature value through outer coil pipe temperature sensing bulb to and through the first exhaust temperature value of gas vent temperature sensing bulb.
S304, judging whether the temperature value of the first inner coil, the temperature value of the first outer coil and the temperature value of the first exhaust temperature are in the effective temperature value range; if the temperature value is within the valid range, the process proceeds to step S305, otherwise, the process proceeds to step S314.
S305, after the air conditioner runs for a first time, collecting a second inner coil temperature value, a second outer coil temperature value and a second exhaust temperature value through a temperature sensing bulb.
After determining that the inner coil pipe temperature-sensing bulb, the outer coil pipe temperature-sensing bulb and the exhaust port temperature-sensing bulb are free of faults and the air conditioner continues to operate for a first time, detecting whether the inner coil pipe temperature-sensing bulb, the outer coil pipe temperature-sensing bulb and the exhaust port temperature-sensing bulb are inserted in place; or after the faults of the inner coil temperature sensing bulb, the outer coil temperature sensing bulb or the exhaust port temperature sensing bulb are eliminated and the engine is restarted to enter the fault detection mode to operate for the first time, whether the inner coil temperature sensing bulb, the outer coil temperature sensing bulb and the exhaust port temperature sensing bulb are inserted in place or not is detected.
Specifically, a second inner coil temperature value is collected via an inner coil bulb, a second outer coil temperature value is collected via an outer coil bulb, and a second exhaust temperature value is collected via an exhaust port bulb.
S306, judging whether the temperature difference value between the first inner coil temperature value and the second inner coil temperature value is within a first temperature difference threshold value; if the temperature difference is within the first temperature difference threshold, the process proceeds to step S315, otherwise, the process proceeds to step S307.
If the temperature difference value is within a first temperature difference threshold value, namely the temperature change of the temperature sensing bulb of the inner coil is extremely small, the temperature sensing bulb of the inner coil is judged not to be inserted in place; if the temperature difference value is outside the first temperature difference threshold value, namely the temperature change of the inner coil pipe temperature sensing bulb conforms to a conventional value, the inner coil pipe temperature sensing bulb is judged to be inserted in place.
S307, judging whether the temperature difference value between the first external coil temperature value and the second external coil temperature value is within a first temperature difference threshold value; if the temperature difference is within the first temperature difference threshold, the step S316 is entered, otherwise, the step S308 is entered.
If the temperature difference value is within the first temperature difference threshold value, namely the temperature change of the temperature sensing bulb of the outer coil pipe is extremely small, the temperature sensing bulb of the outer coil pipe is judged not to be inserted in place; if the temperature difference value is outside the first temperature difference threshold value, namely the temperature change of the outer coil pipe temperature sensing bulb conforms to a conventional value, the outer coil pipe temperature sensing bulb is judged to be inserted in place.
S308, judging that the temperature difference value between the first exhaust temperature value and the second exhaust temperature value is within a first temperature difference threshold value; if the temperature difference is within the first temperature difference threshold, the process proceeds to step S317, otherwise, the process proceeds to step S309.
If the temperature difference value is within the first temperature difference threshold value, namely the temperature change of the exhaust port temperature sensing bulb is extremely small, the exhaust port temperature sensing bulb is judged not to be inserted in place; if the temperature difference value is outside the first temperature difference threshold value, namely the temperature change of the exhaust port temperature sensing bulb conforms to a conventional value, the exhaust port temperature sensing bulb is judged to be inserted in place.
S309, collecting an indoor temperature value and an outdoor temperature value, and acquiring a first temperature difference value between the indoor temperature value and the second inner coil temperature value, a second temperature difference value between the outdoor temperature value and the second outer coil temperature value, a third temperature difference value between the first inner coil temperature value and the second inner coil temperature value, and a fourth temperature difference value between the first outer coil temperature value and the second outer coil temperature value.
After determining that the inner coil pipe temperature-sensing bulb, the outer coil pipe temperature-sensing bulb and the exhaust port temperature-sensing bulb are faultless and are normally plugged, performing refrigerant leakage detection; or after the plugging fault of the inner coil pipe temperature sensing bulb, the outer coil pipe temperature sensing bulb or the exhaust port temperature sensing bulb is eliminated and the engine is restarted to enter the fault detection mode to operate for the first time, the refrigerant leakage detection is carried out.
Specifically, an indoor temperature is collected by an indoor temperature sensor, an outdoor temperature is collected by an outdoor temperature sensor, and a first temperature difference value, a second temperature difference value, a third temperature difference value, and a fourth temperature difference value are calculated.
S310, judging whether any one of the first temperature difference value, the second temperature difference value, the third temperature difference value and the fourth temperature difference value is within a second temperature difference threshold value; if the temperature difference is within the second temperature difference threshold value, the step S318 is executed, otherwise, the step S311 is executed;
wherein, the first temperature difference can reflect the difference in temperature between indoor environment and interior coil, and the second temperature difference can reflect the difference in temperature between outdoor environment and the outer coil, and the third temperature difference can reflect the temperature variation value of interior coil temperature sensing package in first time duration, and the fourth temperature difference can reflect the temperature variation value of interior coil temperature sensing package in first time duration. If the temperature difference values are within a second temperature difference threshold value, namely the temperature change is extremely small, the refrigerant quantity is judged to be insufficient, namely the refrigerant leaks; if the temperature difference values are outside the second temperature difference threshold value, namely the temperature change accords with a conventional value, the refrigerant quantity is judged to be sufficient, namely the refrigerant has no fault.
And S311, controlling to increase the opening of the electronic expansion valve, and acquiring a third exhaust temperature value through the exhaust port temperature sensing bulb after the air conditioner runs for a second time.
After the inner coil pipe temperature sensing bulb, the outer coil pipe temperature sensing bulb and the exhaust port temperature sensing bulb are normally inserted and a refrigerant is not leaked, carrying out fault detection on the electronic expansion valve; or after the plugging fault of the inner coil pipe temperature sensing bulb, the outer coil pipe temperature sensing bulb or the exhaust port temperature sensing bulb and the refrigerant leakage fault are eliminated and the engine is restarted to enter a fault detection mode, the fault detection of the electronic expansion valve is carried out.
Specifically, the electronic expansion valve is controlled to increase the preset steps according to the preset speed, and after the air conditioner runs for a second time period, a third exhaust temperature value is collected through the exhaust port temperature sensing bulb.
S312, judging whether the exhaust temperature difference value between the second exhaust temperature value and the third exhaust temperature value is within a third temperature difference threshold value; if the temperature difference is within the third temperature difference threshold, the process proceeds to step S319, otherwise, the process proceeds to step S313.
The exhaust temperature difference between the second exhaust temperature value and the third exhaust temperature value can reflect the temperature change value of the exhaust port temperature sensing bulb after the expansion valve is opened and the operation is carried out for a second time, and if the exhaust temperature difference is within a third temperature difference threshold value, namely the temperature change of the exhaust port temperature sensing bulb is extremely small, the electronic expansion valve is judged to be stuck; and if the exhaust temperature difference value is outside the third temperature difference threshold value, namely the temperature change of the exhaust port temperature sensing bulb conforms to a conventional value, judging that the electronic expansion valve works normally.
And S313, exiting the fault detection mode and controlling the buzzer to give out a prompt tone.
After all the fault detection is carried out, the air conditioner exits the fault detection mode and enters a standby state; at the same time, the buzzer is controlled to sound for two times to inform the user that the detection is finished.
And S314, controlling the display panel to display a fault code corresponding to the fault of the temperature sensing bulb.
And S315, controlling the display panel to display a fault code corresponding to the plugging fault of the temperature sensing bulb of the inner coil.
And S316, controlling the display panel to display a fault code corresponding to the plugging fault of the temperature-sensing bulb of the outer coil pipe.
And S317, controlling the display panel to display a fault code corresponding to the plugging fault of the exhaust port temperature sensing bulb.
And S318, controlling the display panel to display a fault code corresponding to refrigerant leakage.
And S319, controlling the display panel to display a fault code corresponding to the fault of the electronic expansion valve.
According to the air conditioner fault detection method, after the air conditioner enters the fault detection mode, the air conditioner is controlled to sequentially run according to the set flow steps and time axes, the detected fault type mechanical energy is displayed through the display panel, a user is prompted to check the corresponding fault, the time of the fault detection process is fixed, and the fault type can be checked after the air conditioner runs for a set time.
In order to better implement the method for detecting a fault of an air conditioner provided in the embodiment of the present application, on the basis of the method for detecting a fault of an air conditioner provided in the embodiment of the present application, an apparatus for detecting a fault of an air conditioner is further provided in the embodiment of the present application, as shown in fig. 4, the apparatus 400 for detecting a fault of an air conditioner includes:
a first temperature obtaining module 410, configured to obtain an outdoor temperature in response to the fault detection instruction;
the operation mode determining module 420 is configured to determine a target operation mode of the air conditioner according to the outdoor temperature, and acquire a first temperature difference threshold for detecting a plugging fault of the thermal bulb in the target operation mode;
the second temperature acquisition module 430 is configured to start the air conditioner in the target operation mode, and acquire a first temperature value through the thermal bulb;
the third temperature obtaining module 440 is configured to collect a second temperature value through the thermal bulb after the air conditioner operates for the first duration;
the fault information obtaining module 450 is configured to determine a plugging fault of the temperature sensing bulb if a temperature difference value between the first temperature value and the second temperature value is within a first temperature difference threshold.
In some embodiments of the present application, the thermal bulb comprises at least an inner coil thermal bulb, an outer coil thermal bulb, and an exhaust port thermal bulb; the first temperature value at least comprises a first inner coil temperature value, a first outer coil temperature value and a first exhaust temperature value; the second temperature value includes at least a second inner coil temperature value, a second outer coil temperature value, and a second exhaust temperature value.
In some embodiments of the present application, the fault information obtaining module 450 is configured to determine that the temperature sensing bulb of the inner coil pipe is plugged when a temperature difference value between the first inner coil pipe temperature value and the second inner coil pipe temperature value is within a first temperature difference threshold; and/or when the temperature difference value between the first outer coil temperature value and the second outer coil temperature value is within a first temperature difference threshold value, determining the insertion fault of the outer coil temperature sensing bulb; and/or determining the plugging fault of the exhaust port temperature sensing bulb when the temperature difference value between the first exhaust temperature value and the second exhaust temperature value is a first temperature difference threshold value.
In some embodiments of the present application, the operation mode determining module 420 is further configured to obtain a second temperature difference threshold for refrigerant leakage detection in the target operation mode; the fault information obtaining module 450 is further configured to collect an indoor temperature value and an outdoor temperature value when a temperature difference value between the first temperature value and the second temperature value is not within a first temperature difference threshold value; acquiring a first temperature difference value between an indoor temperature value and a second inner coil temperature value, a second temperature difference value between an outdoor temperature value and a second outer coil temperature value, a third temperature difference value between a first inner coil temperature value and a second inner coil temperature value, and a fourth temperature difference value between a first outer coil temperature value and a second outer coil temperature value; and when any one of the first temperature difference value, the second temperature difference value, the third temperature difference value and the fourth temperature difference value is within a second temperature difference threshold value, determining that the air conditioner refrigerant leaks.
In some embodiments of the present application, the operation mode determining module 420 is further configured to obtain a third temperature difference threshold for detecting a fault of the electronic expansion valve in the target operation mode; the fault information obtaining module 450 is further configured to control to increase the opening degree of the electronic expansion valve when the temperature difference value between the first temperature value and the second temperature value is not within the first temperature difference threshold value; after the air conditioner operates for a second time, collecting a third exhaust temperature value through the exhaust port temperature sensing bulb; and determining that the electronic expansion valve is in fault when the exhaust temperature difference between the second exhaust temperature value and the third exhaust temperature value is not within the third temperature threshold.
In some embodiments of the present application, the operation mode determining module 420 is configured to determine that the target operation mode of the air conditioner is a cooling mode when the outdoor temperature is greater than a preset outdoor temperature threshold; and when the outdoor temperature is not greater than the outdoor temperature threshold value, determining that the target operation mode of the air conditioner is a heating mode.
In some embodiments of the present application, the air conditioner fault detection apparatus further includes a thermal bulb fault detection module configured to: acquiring an effective range of a temperature value of the temperature sensing bulb; when the first temperature value is not within the effective range of the temperature value, determining that the temperature sensing bulb is in fault; and when the first temperature value is within the effective temperature range, controlling a third temperature acquisition module to execute the step of acquiring a second temperature value through a temperature sensing bulb after the air conditioner runs for a first time.
In some embodiments of the present application, the air conditioner fault detection apparatus 400 may be implemented in the form of a computer program that is executable on a computer device such as that shown in fig. 5. The memory of the computer device may store therein various program modules constituting the air conditioner fault detection apparatus 400, such as a first temperature acquisition module 410, an operation mode determination module 420, a second temperature acquisition module 430, a third temperature acquisition module 440, and a fault information acquisition module 450 shown in fig. 4. The computer program constituted by the respective program modules causes the processor to execute the steps in the air conditioner failure detection method of the respective embodiments of the present application described in the present specification.
For example, the computer apparatus shown in fig. 5 may perform step S210 through the first temperature acquisition module 410 in the air conditioner fault detection device 400 shown in fig. 4. The computer device may perform step S220 through the operation mode determination module 420. The computer device may perform step S230 through the second temperature acquisition module 430. The computer device may perform step S240 through the third temperature acquisition module 440. The computer device may perform step S250 through the fault information acquisition module 450. The computer device includes a processor, a memory, and a network interface connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The network interface of the computer device is used for communicating with an external computer device through a network connection. The computer program is executed by a processor to implement a method of fault detection for an air conditioner.
Those skilled in the art will appreciate that the architecture shown in fig. 5 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In some embodiments of the present application, there is provided an air conditioner comprising one or more processors; a memory; and one or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the processor to perform the steps of the air conditioner fault detection method described above. The steps of the air conditioner malfunction detection method herein may be the steps in the air conditioner malfunction detection methods of the respective embodiments described above.
In some embodiments of the present application, there is provided a computer readable storage medium storing a computer program, which is loaded by a processor, so that the processor performs the steps of the air conditioner fault detection method described above. The steps of the air conditioner malfunction detection method herein may be the steps in the air conditioner malfunction detection methods of the respective embodiments described above.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a non-volatile computer-readable storage medium, and can include the processes of the embodiments of the methods described above when the computer program is executed. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM).
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The method, the device, the air conditioner and the storage medium for detecting the air conditioner fault provided by the embodiment of the present application are described in detail above, a specific example is applied in the present application to explain the principle and the implementation of the present invention, and the description of the above embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (10)

1. A fault detection method for an air conditioner is characterized by comprising the following steps:
responding to a fault detection instruction, and acquiring outdoor temperature;
determining a target operation mode of the air conditioner according to the outdoor temperature, and acquiring a first temperature difference threshold value of the detection of the plugging fault of the temperature sensing bulb in the target operation mode;
starting the air conditioner in the target operation mode, and collecting a first temperature value through a temperature sensing bulb;
after the air conditioner operates for a first time, collecting a second temperature value through the temperature sensing bulb;
and if the temperature difference value between the first temperature value and the second temperature value is within the first temperature difference threshold value, determining the plugging fault of the temperature sensing bulb.
2. The method of claim 1, wherein the thermal bulb comprises at least an inner coil thermal bulb, an outer coil thermal bulb, and an exhaust port thermal bulb;
the first temperature value at least comprises a first inner coil temperature value, a first outer coil temperature value and a first exhaust temperature value;
the second temperature value includes at least a second inner coil temperature value, a second outer coil temperature value, and a second exhaust temperature value.
3. The method of claim 2, wherein determining that the temperature-sensing bulb is plugged if the temperature difference between the first temperature value and the second temperature value is within the first temperature difference threshold comprises:
if the temperature difference value between the first inner coil temperature value and the second inner coil temperature value is within the first temperature difference threshold value, determining that the inner coil temperature sensing bulb is in plugging fault; and/or
If the temperature difference value between the first outer coil temperature value and the second outer coil temperature value is within the first temperature difference threshold value, determining the insertion fault of the outer coil temperature sensing bulb; and/or
And if the temperature difference value between the first exhaust temperature value and the second exhaust temperature value is within the first temperature difference threshold value, determining that the temperature sensing bulb of the exhaust port has a plugging fault.
4. The method of claim 2, wherein after determining the target operation mode of the air conditioner according to the outdoor temperature, further comprising:
acquiring a second temperature difference threshold value of refrigerant leakage detection in the target operation mode;
after the second temperature value is collected through the thermal bulb, the method further comprises the following steps:
if the temperature difference value between the first temperature value and the second temperature value is not within the first temperature difference threshold value, collecting an indoor temperature value and an outdoor temperature value;
obtaining a first temperature difference value between the indoor temperature value and the second inner coil temperature value, a second temperature difference value between the outdoor temperature value and the second outer coil temperature value, a third temperature difference value between the first inner coil temperature value and the second inner coil temperature value, and a fourth temperature difference value between the first outer coil temperature value and the second outer coil temperature value;
and if any one of the first temperature difference value, the second temperature difference value, the third temperature difference value and the fourth temperature difference value is within the second temperature difference threshold value, determining that the air conditioner refrigerant leaks.
5. The method of claim 2, wherein after determining the target operation mode of the air conditioner according to the outdoor temperature, further comprising:
acquiring a third temperature difference threshold value of the fault detection of the electronic expansion valve in the target operation mode;
after the second temperature value is collected through the thermal bulb, the method further comprises the following steps:
if the temperature difference value between the first temperature value and the second temperature value is not within the first temperature difference threshold value, controlling to increase the opening degree of the electronic expansion valve;
after the air conditioner operates for a second time period, collecting a third exhaust temperature value through the exhaust port temperature sensing bulb;
and if the exhaust temperature difference between the second exhaust temperature value and the third exhaust temperature value is not within the third temperature threshold value, determining that the electronic expansion valve has a fault.
6. The method according to any one of claims 1 to 5, wherein the determining the target operation mode of the air conditioner according to the outdoor temperature comprises:
if the outdoor temperature is larger than a preset outdoor temperature threshold value, determining that a target operation mode of the air conditioner is a refrigeration mode;
and if the outdoor temperature is not greater than the outdoor temperature threshold value, determining that the target operation mode of the air conditioner is a heating mode.
7. The method according to any one of claims 1 to 5, wherein after the collecting the first temperature value by the thermal bulb, further comprising:
acquiring an effective range of a temperature value of the temperature sensing bulb;
if the first temperature value is not in the effective range of the temperature value, determining that the temperature sensing bulb has a fault;
and if the first temperature value is within the effective temperature range, executing the step of collecting a second temperature value through the temperature sensing bulb after the air conditioner runs for a first time.
8. An air conditioner fault detection apparatus, comprising:
the first temperature acquisition module is used for responding to the fault detection instruction and acquiring the outdoor temperature;
the operation mode determining module is used for determining a target operation mode of the air conditioner according to the outdoor temperature and acquiring a first temperature difference threshold value of the detection of the plugging fault of the temperature sensing bulb in the target operation mode;
the second temperature acquisition module is used for starting the air conditioner in the target operation mode and acquiring a first temperature value through the temperature sensing bulb;
the third temperature acquisition module is used for acquiring a second temperature value through the thermal bulb after the air conditioner operates for the first time;
and the fault information acquisition module is used for determining the plugging fault of the temperature sensing bulb if the temperature difference value between the first temperature value and the second temperature value is within the first temperature difference threshold value.
9. An air conditioner, characterized in that the air conditioner comprises:
one or more processors;
a memory; and
one or more applications, wherein the one or more applications are stored in the memory and configured to be executed by the processor to implement the air conditioner fault detection method of any of claims 1-7.
10. A computer-readable storage medium, having stored thereon a computer program, which is loaded by a processor, to perform the steps in the air conditioner fault detection method according to any one of claims 1 to 7.
CN202210677210.9A 2022-06-15 2022-06-15 Air conditioner fault detection method and device, air conditioner and storage medium Pending CN114935201A (en)

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