CN111397090A - Air conditioner detection method, air conditioner and computer readable storage medium - Google Patents

Air conditioner detection method, air conditioner and computer readable storage medium Download PDF

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Publication number
CN111397090A
CN111397090A CN202010222845.0A CN202010222845A CN111397090A CN 111397090 A CN111397090 A CN 111397090A CN 202010222845 A CN202010222845 A CN 202010222845A CN 111397090 A CN111397090 A CN 111397090A
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Prior art keywords
air conditioner
parameter
compressor
operation state
value
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CN111397090B (en
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霍军亚
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Midea Group Co Ltd
GD Midea Air Conditioning Equipment Co Ltd
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Midea Group Co Ltd
GD Midea Air Conditioning Equipment Co Ltd
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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
    • F24F11/38—Failure diagnosis
    • 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
    • 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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • 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
    • 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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • 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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Thermal Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Human Computer Interaction (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses a detection method of an air conditioner, the air conditioner and a computer readable storage medium, wherein the detection method of the air conditioner comprises the following steps: controlling the compressor to operate for a first preset time according to the first operating condition parameter, and acquiring a first operating state parameter of the air conditioner; determining that the air conditioner has suspected faults according to the first operation state parameter, controlling the compressor to operate for a second preset time according to a second operation condition parameter, and acquiring a second operation state parameter of the air conditioner; and determining the operation state of the air conditioner according to the second operation state parameter. According to the invention, the fault state of the air conditioner is judged in a double detection mode, so that the detection result is more accurate and reliable; secondly, the invention only needs to control the compressor to respectively operate for corresponding preset time under two operating condition parameters, thereby saving time and speed during the detection period.

Description

Air conditioner detection method, air conditioner and computer readable storage medium
Technical Field
The present invention relates to the field of electronic devices, and in particular, to a detection method for an air conditioner, and a computer-readable storage medium.
Background
For the existing air conditioner, on one hand, the capillary throttling device of the air conditioner has small aperture and is easy to cause blockage; after the air conditioner installer installs the air conditioner, the air conditioner installer may forget to open the high pressure valve and the low pressure valve, which may result in system blockage. On the other hand, the air conditioning refrigerant may leak due to poor welding or poor mounting.
When the air conditioner is blocked or the refrigerant leaks, if the compressor still continues to operate, the rare earth permanent magnet of the motor of the compressor is likely to be demagnetized due to high temperature. Therefore, it is necessary to detect the operation state of the air conditioner and to detect the blockage of the air conditioner or the refrigerant leakage failure. However, the conventional detection method takes a long time and has low accuracy.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a detection method of an air conditioner, the air conditioner, an operation control device and a computer readable storage medium, which can quickly and accurately judge the working state of the air conditioner.
The detection method of the air conditioner according to the embodiment of the first aspect of the invention comprises the following steps:
controlling a compressor to operate for a first preset time according to a first operating condition parameter, and acquiring a first operating state parameter of the air conditioner;
determining that the air conditioner has a suspected fault according to the first operation state parameter, controlling the compressor to operate for a second preset time according to a second operation condition parameter, and acquiring a second operation state parameter of the air conditioner;
and determining the operation state of the air conditioner according to the second operation state parameter.
The detection method of the air conditioner provided by the embodiment of the invention at least has the following beneficial effects: the air conditioner fault state judging method and the air conditioner fault state judging device can obtain corresponding first running state parameters and second running state parameters by controlling the compressor to run for corresponding preset time under the first running condition parameters and the second running condition parameters respectively, firstly judge the running state of the air conditioner for the first time according to the first running state parameters, and then judge the running state of the air conditioner again according to the second running state parameters, so that the fault state of the air conditioner is judged in a double detection mode, and the detection result is more accurate and reliable; secondly, the invention only needs to control the compressor to respectively operate for corresponding preset time under the first operating condition parameter and the second operating condition parameter, so that the detection process of the invention is quicker and more time-saving.
According to some embodiments of the invention, the obtaining the first operating state parameter of the air conditioner comprises: acquiring a first phase current parameter of the compressor;
correspondingly, the determining that the air conditioner has a suspected fault according to the first operation state parameter includes: and calculating a first phase current effective value of the compressor according to the first phase current parameter, and determining that the suspected fault exists in the air conditioner when the first phase current effective value is smaller than a preset first phase current effective threshold value.
According to some embodiments of the invention, the obtaining the second operation state parameter of the air conditioner comprises: acquiring a second phase current parameter of the compressor;
correspondingly, the determining the operation state of the air conditioner according to the second operation state parameter includes: and calculating a second phase current effective value of the compressor according to the second phase current parameter, and determining that the air conditioner has a fault when the second phase current effective value is smaller than a preset second phase current effective threshold value.
According to some embodiments of the invention, the obtaining the first operating state parameter of the air conditioner comprises: acquiring a first power parameter of the compressor;
correspondingly, the determining that the air conditioner has a suspected fault according to the first operation state parameter includes: and when the first power parameter is smaller than a preset first power threshold value, determining that the suspected fault exists in the air conditioner.
According to some embodiments of the invention, the obtaining the second operation state parameter of the air conditioner comprises: acquiring a second power parameter of the compressor;
correspondingly, the determining the operation state of the air conditioner according to the second operation state parameter includes: and when the second power parameter is smaller than a preset second power threshold value, determining that the air conditioner has a fault.
According to some embodiments of the invention, the obtaining the first operating state parameter of the air conditioner comprises: acquiring at least one of a first discharge pressure parameter and a first return pressure parameter of the compressor;
correspondingly, the determining that the air conditioner has the suspected fault according to the first operation state parameter includes at least one of the following:
when the first operation state parameter comprises the first exhaust pressure parameter and the first exhaust pressure parameter is larger than a preset first exhaust pressure threshold, determining that the suspected fault exists in the air conditioner;
and when the first operation state parameter comprises the first return pressure parameter and the first return pressure parameter is smaller than a preset first return pressure threshold value, determining that the suspected fault exists in the air conditioner.
According to some embodiments of the invention, the obtaining the second operation state parameter of the air conditioner comprises: acquiring at least one of a second exhaust pressure parameter and a second return air pressure parameter of the compressor;
correspondingly, the determining the operation state of the air conditioner according to the second operation state parameter includes at least one of the following:
when the second operation state parameter comprises a second exhaust pressure parameter, and the second exhaust pressure parameter is greater than a preset second exhaust pressure threshold, determining that the air conditioner has a fault;
and when the second operation state parameter comprises a second return air pressure parameter, and the second return air pressure parameter is smaller than a preset second return air pressure threshold value, determining that the air conditioner has a fault.
According to some embodiments of the invention, the obtaining the second operation state parameter of the air conditioner comprises: acquiring a second exhaust pressure parameter and a second return air pressure parameter of the compressor;
correspondingly, the determining the operation state of the air conditioner according to the second operation state parameter includes one of the following steps:
when the second exhaust pressure parameter is greater than a preset second exhaust pressure threshold value and the second return air pressure parameter is less than a preset second return air pressure threshold value, determining that the air conditioner has a blockage fault;
and when the second exhaust pressure parameter is smaller than a preset second exhaust pressure threshold value and the second return air pressure parameter is smaller than a preset second return air pressure threshold value, determining that the air conditioner has a refrigerant leakage fault.
According to some embodiments of the invention, the obtaining the first operating state parameter of the air conditioner comprises: acquiring at least one of the following operating state parameters of the air conditioner:
a first indoor ambient temperature value and a first indoor unit evaporator coil temperature value;
a first outdoor unit condenser coil temperature value and a first outdoor environment temperature value;
a first compressor discharge temperature value;
a first compressor surface temperature value;
correspondingly, the determining that the air conditioner has the suspected fault according to the first operation state parameter includes at least one of the following:
when the first operation state parameter comprises the first indoor environment temperature value and the first indoor unit evaporator coil temperature value, calculating a first indoor temperature difference value between the first indoor environment temperature value and the first indoor unit evaporator coil temperature value, and when the first indoor temperature difference value is smaller than a preset first indoor temperature difference threshold value, determining that the suspected fault exists in the air conditioner;
when the first running state parameter comprises the first outdoor unit condenser coil temperature value and the first outdoor environment temperature value, calculating a first outdoor temperature difference value between the first outdoor unit condenser coil temperature value and the first outdoor environment temperature value, and when the first outdoor temperature difference value is smaller than a preset first outdoor temperature difference threshold value, determining that the suspected fault exists in the air conditioner;
when the first operation state parameter comprises the first compressor exhaust temperature value and the first compressor exhaust temperature value is smaller than a preset first compressor exhaust temperature threshold value, determining that the suspected fault exists in the air conditioner;
and when the first operation state parameter comprises the first compressor surface temperature value, and the first compressor surface temperature value is greater than a preset first compressor surface temperature threshold value, determining that the suspected fault exists in the air conditioner.
According to some embodiments of the invention, the obtaining the second operation state parameter of the air conditioner comprises: acquiring at least one of the following operating state parameters of the air conditioner:
a second indoor ambient temperature value and a second indoor unit evaporator coil temperature value;
a second outdoor unit condenser coil temperature value and a second outdoor environment temperature value;
a second compressor discharge temperature value;
a second compressor surface temperature value;
correspondingly, the determining the operation state of the air conditioner according to the second operation state parameter includes at least one of the following:
when the second operation state parameter comprises a second indoor environment temperature value and a second indoor unit evaporator coil temperature value, calculating a second indoor temperature difference value between the second indoor environment temperature value and the second indoor unit evaporator coil temperature value, and when the second indoor temperature difference value is smaller than a preset second indoor temperature difference threshold value, determining that the air conditioner has a fault;
when the second operation state parameter comprises the second outdoor unit condenser coil temperature value and the second outdoor environment temperature value, calculating a second outdoor temperature difference value between the second outdoor unit condenser coil temperature value and the second outdoor environment temperature value, and when the second outdoor temperature difference value is smaller than a preset second outdoor temperature difference threshold value, determining that the air conditioner has a fault;
when the second operation state parameter comprises a second compressor exhaust temperature value and the second compressor exhaust temperature value is smaller than a preset second compressor exhaust temperature threshold value, determining that the air conditioner has a fault;
and when the second operation state parameter comprises a second compressor surface temperature value, and the second compressor surface temperature value is greater than a preset second compressor surface temperature threshold value, determining that the air conditioner has a fault.
According to some embodiments of the invention, the first operating condition parameter and the second operating condition parameter comprise: the motor running frequency and/or the motor running speed of the compressor.
According to some embodiments of the invention, the first operating condition parameter and the second operating condition parameter further comprise: a cooling mode or a heating mode.
An operation control apparatus according to an embodiment of a second aspect of the present invention includes at least one control processor and a memory for communicative connection with the at least one control processor; the memory stores instructions executable by the at least one control processor to enable the at least one control processor to perform the detection method of the air conditioner as described above.
The operation control device according to the embodiment of the invention has at least the following beneficial effects: the operation control device of the invention stores a first operation condition parameter, a second operation condition parameter, a first preset time and a second preset time, in the process of detecting the operation state of the air conditioner, the operation control device can control the compressor to operate for the first preset time under the first operation condition parameter and can control the compressor to operate for the second preset time under the second operation condition parameter, so as to respectively obtain the corresponding first operation state parameter and the second operation state parameter, the operation control device can firstly judge the operation state of the air conditioner for the first time according to the first operation state parameter and then judge the operation state of the air conditioner again according to the second operation state parameter, therefore, the invention judges the fault state of the air conditioner in a double detection mode, and leads the detection result to be more accurate and reliable; secondly, the operation control device only needs to control the compressor to operate for corresponding preset time under the first operation condition parameter and the second operation condition parameter respectively, so that the detection process is quicker and more time-saving.
An air conditioner according to an embodiment of a third aspect of the present invention includes a compressor and the operation control device as described above, the compressor and the operation control device being electrically connected.
The air conditioner provided by the embodiment of the invention at least has the following beneficial effects: the air conditioner of the present invention includes a compressor and an operation control device, wherein the operation control device stores therein a first operation condition parameter, a second operation condition parameter, a first preset time and a second preset time, in the detecting of the operation state of the air conditioner, the operation control means may control the compressor to operate for a first preset time under a first operation condition parameter, and may control the compressor to operate for a second preset time under a second operation condition parameter, so as to respectively obtain corresponding first operation state parameter and second operation state parameter, the operation control device can firstly judge the operation state of the air conditioner for the first time according to the first operation state parameter, then judge the operation state of the air conditioner again according to the second operation state parameter, therefore, the fault state of the air conditioner is judged in a double detection mode, so that the detection result is more accurate and reliable; secondly, the operation control device only needs to control the compressor to operate for corresponding preset time under the first operation condition parameter and the second operation condition parameter respectively, so that the detection process is quicker and more time-saving.
According to a fourth aspect of the present invention, there is provided a computer-readable storage medium storing computer-executable instructions for causing a computer to perform the detection method of an air conditioner as described above.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic diagram of an operation control apparatus according to an embodiment of the present invention;
fig. 2 is a flowchart of a detection method of an air conditioner according to an embodiment of the present invention;
fig. 3 is a flowchart of a detection method of an air conditioner according to another embodiment of the present invention;
fig. 4 is a flowchart of a detection method of an air conditioner according to another embodiment of the present invention;
fig. 5 is a flowchart of a detection method of an air conditioner according to another embodiment of the present invention;
fig. 6 is a flowchart of a detection method of an air conditioner according to another embodiment of the present invention;
fig. 7 is a flowchart of a detection method of an air conditioner according to another embodiment of the present invention;
fig. 8 is a flowchart of a detection method of an air conditioner according to another embodiment of the present invention;
fig. 9 is a flowchart of a detection method of an air conditioner according to another embodiment of the present invention;
fig. 10 is a flowchart of a detection method of an air conditioner according to another embodiment of the present invention;
fig. 11 is a flowchart of a detection method of an air conditioner according to another embodiment of the present invention;
fig. 12 is a flowchart of a detection method of an air conditioner according to another embodiment of the present invention;
fig. 13 is a flowchart of a detection method of an air conditioner according to another embodiment of the present invention;
fig. 14 is a flowchart of a detection method of an air conditioner according to another embodiment of the present invention;
fig. 15 is a flowchart of a detection method of an air conditioner according to another embodiment of the present invention;
fig. 16 is a flowchart of a detection method of an air conditioner according to another embodiment of the present invention;
fig. 17 is a flowchart of a detection method of an air conditioner according to another embodiment of the present invention;
fig. 18 is a flowchart of a detection method of an air conditioner according to another embodiment of the present invention;
fig. 19 is a flowchart of a detection method of an air conditioner according to another embodiment of the present invention;
fig. 20 is a flowchart of a detection method of an air conditioner according to another embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
At present, for air conditioners on the market, on one hand, capillary throttling devices of the air conditioners have small apertures and are easy to block; after the air conditioner installer installs the air conditioner, the air conditioner installer may forget to open the high pressure valve and the low pressure valve, which may result in system blockage. On the other hand, the air conditioning refrigerant may leak due to poor welding or poor mounting. After the air conditioner is blocked, when the compressor is started to operate, the refrigerant of the air conditioner can not normally circulate, and the heat generated by the motor of the compressor can not be taken away through the flow of the refrigerant, so that the temperature in the compressor can continuously rise, the rare earth permanent magnet of the motor of the compressor can be demagnetized due to high temperature, and the permanent damage of the compressor can be caused. After the air conditioning refrigerant leaks, the heat generated by the motor in the running process of the compressor motor cannot be taken away through the flowing of the refrigerant, and high-temperature demagnetization damage can be caused.
In order to avoid compressor demagnetization damage caused by air conditioner blockage or refrigerant leakage, in the prior art scheme, whether the air conditioner is blocked or the refrigerant is leaked is often judged by detecting the refrigeration and heating effects of the air conditioner. The common method for judging the cooling and heating effects is to detect the indoor environment temperature and the indoor machine evaporator coil temperature and judge the cooling and heating effects according to the temperature difference between the indoor environment temperature and the indoor machine evaporator coil temperature. When in refrigeration, if the difference value between the indoor environment temperature and the indoor unit evaporator coil temperature is larger, the better the refrigeration effect is; when heating, if the difference between the temperature of the indoor unit evaporator coil and the indoor environment temperature is larger, the heating effect is better. However, this prior art solution has two disadvantages, the first one being: the refrigeration and heating of the air conditioner needs a period of time, generally more than one hour is needed to accurately judge the refrigeration and heating effects, and after the air conditioner is blocked, the compressor is easy to demagnetize at high temperature after being high-speed for one hour; the second disadvantage is that: under different indoor temperature conditions and when the indoor unit fan works at different rotating speeds, the temperature difference between the indoor unit fan and the indoor unit fan is different, so that misjudgment is possible.
Based on the above, the invention provides a detection method of an air conditioner, the air conditioner, an operation control device and a computer readable storage medium, which only need to control a compressor to operate for corresponding preset time under two operation condition parameters respectively, obtain two corresponding operation state parameters of the air conditioner, and then perform double detection judgment on the operation state of the air conditioner according to the two operation state parameters. Compared with the existing detection means, the invention adopts a double detection and judgment mode, the detection result is more accurate and reliable, the detection is carried out after the effect of refrigeration or heating is achieved without long-time operation, and the detection period is quicker and more time-saving.
The embodiments of the present invention will be further explained with reference to the drawings.
As shown in fig. 1, fig. 1 is a schematic diagram of an operation control apparatus 100 for performing a detection method of an air conditioner according to an embodiment of the present invention. The operation control apparatus 100 according to the embodiment of the present invention may be built in an air conditioner, and includes one or more control processors 110 and a memory 120, and fig. 1 illustrates one control processor 110 and one memory 120 as an example.
The control processor 110 and the memory 120 may be connected by a bus or other means, such as by a bus connection in fig. 1.
The memory 120, which is a non-transitory computer readable storage medium, may be used to store non-transitory software programs as well as non-transitory computer executable programs. Further, the memory 120 may include high speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory 120 may optionally include memory 120 located remotely from the control processor 110, and these remote memories may be connected to the operation control device 100 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
Those skilled in the art will appreciate that the configuration of the apparatus shown in FIG. 1 does not constitute a limitation of the operation control apparatus 100, and may include more or fewer components than those shown, or some components in combination, or a different arrangement of components.
In the operation control device 100 shown in fig. 1, the control processor 110 may be configured to call an air conditioner detection program stored in the memory 120 to implement the air conditioner detection method.
Based on the hardware configuration of the operation control device 100, various embodiments of the detection method of the air conditioner of the present invention are proposed.
Referring to fig. 2, fig. 2 is a flowchart of a detection method of an air conditioner according to an embodiment of the present invention, the detection method of the air conditioner includes, but is not limited to, the following steps:
s210: controlling the compressor to operate for a first preset time according to the first operating condition parameter, and acquiring a first operating state parameter of the air conditioner;
s220: determining that the air conditioner has suspected faults according to the first operation state parameter, controlling the compressor to operate for a second preset time according to a second operation condition parameter, and acquiring a second operation state parameter of the air conditioner;
s230: and determining the operation state of the air conditioner according to the second operation state parameter.
It is understood that the detection method of the air conditioner in the embodiment of the present invention may be applied to a central air conditioner, a wall-mounted air conditioner, a cabinet air conditioner, or other types of air conditioners. Secondly, the basic idea of the embodiment of the invention is to control the compressor to respectively operate for corresponding preset time under two operation condition parameters, obtain two corresponding operation state parameters of the air conditioner, and then perform double detection and judgment on the operation state of the air conditioner according to the two operation state parameters.
In an embodiment, in the detection process of the operation state of the air conditioner, the embodiment of the invention adopts a double detection judgment mode. For the primary detection process, the embodiment of the invention can control the compressor to operate for a first preset time under the first operation condition parameter, then obtain the first operation state parameter corresponding to the air conditioner, finally judge whether the air conditioner has a suspected fault according to the obtained first operation state parameter, and if the air conditioner is judged to have the suspected fault, further execute a secondary detection process. For the secondary detection process, the embodiment of the invention can change the operation condition parameters of the compressor, so that the compressor operates for a second preset time under the second operation condition parameters, then obtains the second operation state parameters corresponding to the air conditioner, and finally judges the operation state of the air conditioner according to the obtained second operation state parameters, thereby finally determining whether the air conditioner is in a fault state or a normal state. Therefore, the embodiment of the invention judges the running state of the air conditioner in a double detection mode, so that the detection result is more accurate and reliable; secondly, the embodiment of the invention only needs to change the operation condition parameters of the compressor and operate for corresponding preset time, and does not need to operate for a long time to achieve the effect of air conditioner refrigeration or heating, so that the detection process of the embodiment of the invention is quicker and more convenient.
It should be noted that the fault state of the air conditioner in the embodiment of the present invention includes a blockage state or a refrigerant leakage state.
In addition, it should be noted that the first operating condition parameter and the second operating condition parameter may be a motor operating frequency and/or a motor operating rotational speed of the compressor, wherein the motor operating frequency and the motor operating rotational speed substantially correspond to each other. Therefore, in the primary detection process, the embodiment of the invention can control the compressor to operate at the first motor operation frequency or the first motor operation speed; in the secondary detection process, the embodiment of the invention can control the compressor to operate at the second motor operation frequency or the second motor operation speed. Wherein, if make the air conditioner move under the state of high load, will do benefit to and discern the air conditioner fault status and detect, but if make the air conditioner directly move under the state of high load in a trade, if the air conditioner has had the trouble, the compressor lacks sufficient refrigerant and cools off it, will easily make the compressor burn out. Therefore, in order to ensure the safety in the detection process, the embodiment of the invention can firstly enable the compressor to run at low frequency or low speed in the primary detection process, and gradually increase the motor frequency or the motor rotating speed of the compressor if the air conditioner is judged to be suspected to have a fault, so that the compressor runs at high frequency or high speed in the secondary detection process, thereby ensuring the safety in the detection process of the embodiment of the invention and simultaneously considering the accuracy. In an actual air conditioner detection process, the operating frequency of the first motor can be 50Hz to 60Hz, and the operating frequency of the second motor can be 70Hz to 90Hz, wherein in order to achieve a better detection effect, the operating frequency of the first motor can be 50Hz, and the operating frequency of the second motor can be 80 Hz.
The first operating condition parameter and the second operating condition parameter may include a cooling mode or a heating mode. In order to save the detection time, the embodiment of the present invention does not need to switch between the cooling mode and the heating mode, and only executes the steps S210, S220, and S230 in a single mode, thereby greatly shortening the detection time and making the detection period faster and more convenient.
It can be understood that, in the primary detection process, the first operation state parameter of the air conditioner is acquired only after the compressor is controlled to operate for the first preset time according to the first operation condition parameter in the embodiment of the invention, so that in the primary detection process, the first operation state parameter is acquired only after the air conditioner is in a stable state, the acquired first operation state parameter is more accurate and reliable, and the accuracy of the primary detection process is improved. Similarly, in the secondary detection process, the second operation state parameter of the air conditioner is acquired after the compressor is controlled to operate for the second preset time according to the second operation condition parameter, so that the acquired second operation state parameter is more accurate and reliable, and the accuracy of the secondary detection process is improved. In the actual air conditioner detection process, the first preset time and the second preset time can both take values of 3 minutes to 10 minutes, wherein in order to achieve a better detection effect, the first preset time and the second preset time can both take values of 5 minutes.
In addition, the first operating state parameter and the second operating state parameter may be a phase current parameter of the compressor, a power parameter of the compressor, an exhaust pressure parameter of the compressor, a return air pressure parameter of the compressor, an indoor environment temperature value, an indoor unit evaporator coil temperature value, an outdoor unit condenser coil temperature value, an outdoor environment temperature value, a compressor exhaust temperature value, and a compressor surface temperature value. The analysis can be divided into, but is not limited to, the following example cases:
in an embodiment, the present invention provides a flowchart of another detection method of an air conditioner, as shown in fig. 3, fig. 3 is a flowchart illustrating a range expansion of the first operation state parameter in steps S210 and S220 in fig. 2, and includes, but is not limited to, the following steps:
s310: acquiring a first phase current parameter of a compressor;
s320: and calculating a first phase current effective value of the compressor according to the first phase current parameter, and determining that the suspected fault exists in the air conditioner when the first phase current effective value is smaller than a preset first phase current effective threshold value.
In the primary detection process, a first phase current parameter of the compressor is obtained after the compressor is controlled to operate for a first preset time under a first operation condition parameter, then a first phase current effective value of the compressor is calculated based on the obtained first phase current parameter, and if the calculated first phase current effective value is smaller than a preset first phase current effective threshold value, the suspected fault of the air conditioner is preliminarily judged; if the calculated effective value of the first phase current is larger than or equal to the preset effective threshold value of the first phase current, the air conditioner can be directly confirmed to be in a normal state.
It should be noted that, the first phase current parameter may be a plurality of instantaneous current values in one compressor phase current period, which may be i1(1)、i1(2)、……、i1(n)To indicate that the acquisition was performed n times in total. According to the plurality of instantaneous current values, the effective value of the first phase current can be calculated by the following formula:
Figure BDA0002426680700000121
wherein irms1The effective value of the first phase current. In addition, for a preset first phase currentEffective threshold, embodiments of the present invention may employ ithd1To perform the presentation. If irms1＜ithd1Then it can be determined that there is a suspected fault with the air conditioner.
It is understood that n is a positive integer, and the larger the value of n, the more effective the first phase current irms1More precisely, the value of n may be greater than 10 during the actual air conditioner detection process. In addition, the first phase current effective threshold ithd1The value of the first phase current effective threshold i can be 1.5A to 2.5A, wherein the first phase current effective threshold i is used for achieving a good detection effectthd1The value may be 2A.
In an embodiment, the present invention provides a flowchart of another detection method of an air conditioner, as shown in fig. 4, fig. 4 is a flowchart illustrating a second operation state parameter after a range is expanded in steps S220 and S230 of fig. 2, and includes, but is not limited to, the following steps:
s410: acquiring a second phase current parameter of the compressor;
s420: and calculating a second-phase current effective value of the compressor according to the second-phase current parameter, and determining that the air conditioner has a fault when the second-phase current effective value is smaller than a preset second-phase current effective threshold value.
If the suspected fault exists in the air conditioner, in the secondary detection process, a second-phase current parameter of the compressor is obtained after the compressor is controlled to operate for a second preset time under a second operation condition parameter, then a second-phase current effective value of the compressor is calculated based on the obtained second-phase current parameter, and if the calculated second-phase current effective value is smaller than a preset second-phase current effective threshold value, the fault exists in the air conditioner is finally confirmed; and finally confirming that the air conditioner is in a normal state if the calculated effective value of the second phase current is greater than or equal to a preset effective threshold value of the second phase current.
It should be noted that the second-phase current parameter may be a plurality of instantaneous current values in one compressor phase current period, which may be i2(1)、i2(2)、……、i2(m)To represent that m total acquisitions were made. The effective value of the second phase current can be switched on according to the plurality of instantaneous current valuesThe following formula is used for calculation:
Figure BDA0002426680700000131
wherein irms2The effective value of the second phase current. In addition, for the preset effective threshold of the second phase current, the embodiment of the present invention may adopt ithd2To perform the presentation. If irms2＜ithd2It may be determined that the air conditioner has a malfunction.
It will be appreciated that m is a positive integer and that the greater the value of m, the greater the effective value i of the second phase currentrms2More precisely, in the actual air conditioner detection process, the value of m may be greater than 10. In addition, the effective threshold i of the second phase currentthd2The value can be 2.5A to 3.5A, wherein, in order to achieve better detection effect, the effective threshold value i of the second phase currentthd2The value may be 3A.
In an embodiment, the present invention provides a flowchart of another detection method of an air conditioner, as shown in fig. 5, fig. 5 is a flowchart illustrating a range expansion of the first operation state parameter in steps S210 and S220 in fig. 2, including but not limited to the following steps:
s510: acquiring a first power parameter of a compressor;
s520: and when the first power parameter is smaller than a preset first power threshold value, determining that the suspected fault exists in the air conditioner.
In the primary detection process, a first power parameter of the compressor is obtained after the compressor is controlled to operate for a first preset time under a first operation condition parameter, then comparison is carried out on the basis of the obtained first power parameter and a preset first power threshold value, and if the first power parameter is smaller than the first power threshold value, suspected faults of the air conditioner are preliminarily judged; if the first power parameter is larger than or equal to the first power threshold, the air conditioner can be directly confirmed to be in a normal state.
It should be noted that the first power parameter mentioned above can be calculated by the following formula:
P1＝uu1iu1+uv1iv1+uw1iw1
wherein, P1Is a first power parameter, uu1、uv1And uw1Three-phase voltage of compressor, iu1、iv1And iw1The three-phase currents are corresponding to the compressors respectively. In addition, for the preset first power threshold, P may be adopted in the embodiment of the present inventionthd1To perform the presentation. If P1＜Pthd1Then it can be determined that there is a suspected fault with the air conditioner.
It will be appreciated that the first power threshold Pthd1The value can be 150W to 250W, wherein, in order to achieve better detection effect, the first power threshold value P isthd1The value may be 200W.
In an embodiment, the present invention provides a flowchart of another detection method of an air conditioner, as shown in fig. 6, fig. 6 is a flowchart illustrating a second operation state parameter after a range is expanded in steps S220 and S230 of fig. 2, and includes, but is not limited to, the following steps:
s610: acquiring a second power parameter of the compressor;
s620: and when the second power parameter is smaller than a preset second power threshold value, determining that the air conditioner has a fault.
If the suspected fault exists in the air conditioner, in the secondary detection process, a second power parameter of the compressor is obtained after the compressor is controlled to operate for a second preset time under a second operation condition parameter, then the obtained second power parameter is compared with a preset second power threshold value, and if the second power parameter is smaller than the second power threshold value, the fault of the air conditioner is finally confirmed; and finally confirming that the air conditioner is in a normal state if the second power parameter is greater than or equal to the second power threshold.
It should be noted that the second power parameter mentioned above can be calculated by the following formula:
P2＝uu2iu2+uv2iv2+uw2iw2
wherein, P2Is the second power parameter, uu2、uv2And uw2Three-phase voltage of compressor, iu2、iv2And iw2The three-phase currents are corresponding to the compressors respectively. In addition, for the preset second power threshold, P may be adopted in the embodiment of the present inventionthd2To perform the presentation. If P2＜Pthd2It may be determined that the air conditioner has a malfunction.
It will be appreciated that the second power threshold Pthd2The value can be 250W to 350W, wherein, in order to achieve better detection effect, the second power threshold value P isthd2The value may be 300W.
In an embodiment, the present invention provides a flowchart of another detection method of an air conditioner, as shown in fig. 7, fig. 7 is a flowchart illustrating a range expansion of the first operation state parameter in steps S210 and S220 in fig. 2, including but not limited to the following steps:
s711: acquiring a first exhaust pressure parameter of a compressor;
s721: and when the first exhaust pressure parameter is larger than a preset first exhaust pressure threshold value, determining that the suspected fault exists in the air conditioner.
In the primary detection process, a first exhaust pressure parameter of the compressor is obtained after the compressor is controlled to operate for a first preset time under a first operation condition parameter, then comparison is carried out on the basis of the obtained first exhaust pressure parameter and a preset first exhaust pressure threshold value, and if the first exhaust pressure parameter is larger than the first exhaust pressure threshold value, suspected faults of the air conditioner are preliminarily judged.
It should be noted that, in the embodiment of the present invention, P may be adopted as the first exhaust pressure parameterexhaust1To perform the representation; for the first exhaust pressure threshold, P may be usede_thd1To perform the presentation. If Pexhaust1＞Pe_thd1Then it can be determined that there is a suspected fault with the air conditioner.
In an embodiment, the present invention provides a flowchart of another detection method of an air conditioner, as shown in fig. 8, fig. 8 is a flowchart illustrating a range expansion of the first operation state parameter in steps S210 and S220 in fig. 2, including but not limited to the following steps:
s712: acquiring a first back pressure parameter of the compressor;
s722: and when the first return pressure parameter is smaller than a preset first return pressure threshold value, determining that the suspected fault exists in the air conditioner.
In the primary detection process, a first return pressure parameter of the compressor is obtained after the compressor is controlled to operate for a first preset time under a first operation condition parameter, then comparison is carried out on the basis of the obtained first return pressure parameter and a preset first return pressure threshold value, and if the first return pressure parameter is smaller than the first return pressure threshold value, suspected faults of the air conditioner are preliminarily judged.
It should be noted that, in the embodiment of the present invention, for the first back pressure parameter, P may be adoptedreturn1To perform the representation; for the first reflux pressure threshold, P may be usedr_thd1To perform the presentation. If Preturn1＜Pr_thd1Then it can be determined that there is a suspected fault with the air conditioner.
It will be appreciated that the first return pressure threshold Pr_thd1The value of the first air return pressure can be 1.5P to 2.5P, wherein the first air return pressure threshold value P is used for achieving a better detection effectr_thd1The value can be 2P.
Based on the above-mentioned embodiments of fig. 7 and 8, if the first discharge pressure parameter P of the compressor is obtained at the same timeexhaust1And a first back-pressure parameter Preturn1When P isexhaust1＞Pe_thd1Or Preturn1＜Pr_thd1The suspected fault of the air conditioner can be determined; however, when P isexhaust1≤Pe_thd1And P isreturn1≥Pr_thd1Only then can the normal state of the air conditioner be directly determined.
In an embodiment, the present invention provides a flowchart of another detection method of an air conditioner, as shown in fig. 9, fig. 9 is a flowchart illustrating a second operation state parameter after a range is expanded in steps S220 and S230 of fig. 2, and includes, but is not limited to, the following steps:
s713: acquiring a second exhaust pressure parameter of the compressor;
s723: and when the second exhaust pressure parameter is larger than a preset second exhaust pressure threshold value, determining that the air conditioner has a fault.
And if the air conditioner has a suspected fault, in the secondary detection process, a second exhaust pressure parameter of the compressor is obtained after the compressor is controlled to operate for a second preset time under a second operation condition parameter, then comparison is carried out on the basis of the obtained second exhaust pressure parameter and a preset second exhaust pressure threshold, and if the second exhaust pressure parameter is larger than the second exhaust pressure threshold, the air conditioner is finally confirmed to have a fault.
In the embodiment of the present invention, P may be adopted as the second exhaust pressure parameterexhaust2To perform the representation; for the second exhaust pressure threshold, P may be usede_thd2To perform the presentation. If Pexhaust2＞Pe_thd2And finally confirming that the air conditioner has a fault.
It is understood that the second exhaust pressure threshold value Pe_thd2The value of the exhaust pressure threshold value can be 2.5P to 3.5P, wherein the second exhaust pressure threshold value P is used for achieving a better detection effecte_thd2The value can be 3P.
In an embodiment, the present invention provides a flowchart of another detection method of an air conditioner, as shown in fig. 10, fig. 10 is a flowchart illustrating a second operation state parameter after a range is expanded in steps S220 and S230 of fig. 2, and includes, but is not limited to, the following steps:
s714: acquiring a second return air pressure parameter of the compressor;
s724: and when the second return air pressure parameter is smaller than a preset second return air pressure threshold value, determining that the air conditioner has a fault.
And if the suspected fault exists in the air conditioner, in the secondary detection process, a second return air pressure parameter of the compressor is obtained after the compressor is controlled to operate for a second preset time under a second operation condition parameter, then the obtained second return air pressure parameter is compared with a preset second return air pressure threshold value, and if the second return air pressure parameter is smaller than the second return air pressure threshold value, the fault exists in the air conditioner is finally confirmed.
It should be noted that, in the embodiment of the present invention, for the second return air pressure parameter, P may be adoptedreturn2To perform the representation; for the second return air pressure threshold, P may be usedr_thd2To perform the presentation. If Preturn2＜Pr_thd2And finally confirming that the air conditioner has a fault.
Based on the above-mentioned embodiments of fig. 9 and 10, if the second discharge pressure parameter P of the compressor is obtained at the same timeexhaust2And a second return air pressure parameter Preturn2When P isexhaust2＞Pe_thd2Or Preturn2＜Pr_thd2It is determined that the air conditioner has a malfunction. However, when P isexhaust2≤Pe_thd2And P isreturn2≥Pr_thd2Only then can the normal state of the air conditioner be directly determined.
In an embodiment, the present invention provides a flowchart of another detection method of an air conditioner, as shown in fig. 11, fig. 11 is a flowchart illustrating a second operation state parameter after a range is expanded in steps S220 and S230 of fig. 2, and includes, but is not limited to, the following steps:
s715: acquiring a second exhaust pressure parameter and a second return air pressure parameter of the compressor;
s725: and when the second exhaust pressure parameter is greater than a preset second exhaust pressure threshold value and the second return air pressure parameter is less than a preset second return air pressure threshold value, determining that the air conditioner has a blockage fault.
The embodiment of the invention can further determine whether the fault state of the air conditioner is a blocking state. If the second exhaust pressure parameter is greater than the preset second exhaust pressure threshold and the second return pressure parameter is less than the preset second return pressure threshold, it may be determined that the air conditioner is in a fault state and it may be determined that the fault state is a blocked state. If P isexhaust2＞Pe_thd2And P isreturn2＜Pr_thd2Then it may be determined that the air conditioner is in a blocked state.
In an embodiment, the present invention provides a flowchart of another detection method of an air conditioner, as shown in fig. 12, fig. 12 is a flowchart illustrating a second operation state parameter after a range is expanded in steps S220 and S230 of fig. 2, and includes, but is not limited to, the following steps:
s716: acquiring a second exhaust pressure parameter and a second return air pressure parameter of the compressor;
s726: and when the second exhaust pressure parameter is smaller than a preset second exhaust pressure threshold value and the second return air pressure parameter is smaller than a preset second return air pressure threshold value, determining that the air conditioner has a refrigerant leakage fault.
The embodiment of the invention can further determine whether the fault state of the air conditioner is the refrigerant leakage state. If the second exhaust pressure parameter is smaller than the preset second exhaust pressure threshold and the second return pressure parameter is smaller than the preset second return pressure threshold, it may be determined that the air conditioner is in a fault state, and it may be determined that the fault state is a refrigerant leakage state. If P isexhaust2＜Pe_thd2And P isreturn2＜Pr_thd2Then, the air conditioner can be determined to be in the refrigerant leakage state.
In an embodiment, the present invention provides a flowchart of another detection method of an air conditioner, as shown in fig. 13, fig. 13 is a flowchart illustrating a range expansion of the first operation state parameter in steps S210 and S220 in fig. 2, and includes, but is not limited to, the following steps:
s811: acquiring a first indoor environment temperature value and a first indoor unit evaporator coil temperature value;
s821: and calculating a first indoor temperature difference value between the first indoor environment temperature value and the first indoor unit evaporator coil temperature value, and determining that the suspected fault exists in the air conditioner when the first indoor temperature difference value is smaller than a preset first indoor temperature difference threshold value.
In the primary detection process, a first indoor environment temperature value and a first indoor unit evaporator coil temperature value are obtained after a compressor is controlled to operate for a first preset time under a first operation condition parameter, then a first indoor temperature difference value of the first indoor environment temperature value and the first indoor unit evaporator coil temperature value is calculated based on the obtained first indoor environment temperature value and the obtained first indoor unit evaporator coil temperature value, and if the calculated first indoor temperature difference value is smaller than a preset first indoor temperature difference threshold value, suspected faults of the air conditioner are preliminarily determined.
It should be noted that, in the embodiment of the present invention, T may be adopted as the first indoor environment temperature value1It can be shown that T can be adopted for the temperature value of the first indoor unit evaporator coil2Wherein the first indoor temperature difference can be calculated by the following formula:
Tin1＝T1-T2
wherein, Tin1For the first indoor temperature difference value, in addition, for the preset first indoor temperature difference threshold value, the embodiment of the present invention may adopt Tin_thd1To perform the presentation. If Tin1＜Tin_thd1Then it can be determined that there is a suspected fault with the air conditioner.
It is understood that the first indoor temperature difference threshold value Tin_thd1Can be 1.5 ℃ to 2.5 ℃, wherein, in order to achieve better detection effect, the first indoor temperature difference threshold value Tin_thd1The value can be taken as 2 ℃.
In an embodiment, the present invention provides a flowchart of another detection method of an air conditioner, as shown in fig. 14, fig. 14 is a flowchart illustrating a range expansion of the first operation state parameter in steps S210 and S220 in fig. 2, and includes, but is not limited to, the following steps:
s812: acquiring a temperature value of a coil pipe of a condenser of a first outdoor unit and a first outdoor environment temperature value;
s822: and calculating a first outdoor temperature difference value between the first outdoor unit condenser coil temperature value and a first outdoor environment temperature value, and determining that the suspected fault exists in the air conditioner when the first outdoor temperature difference value is smaller than a preset first outdoor temperature difference threshold value.
In the primary detection process, after the compressor is controlled to operate for a first preset time under a first operation condition parameter, a first outdoor unit condenser coil temperature value and a first outdoor environment temperature value are obtained, then a first outdoor temperature difference value of the first outdoor unit condenser coil temperature value and the first outdoor environment temperature value is calculated based on the obtained first outdoor unit condenser coil temperature value and the first outdoor environment temperature value, and if the calculated first outdoor temperature difference value is smaller than a preset first outdoor temperature difference threshold value, suspected faults of the air conditioner are preliminarily determined.
It should be noted that, in the embodiment of the present invention, T may be adopted as the temperature value of the condenser coil of the first outdoor unit3May adopt T for the first outdoor environment temperature value4Wherein the first outdoor temperature difference value can be calculated by the following formula:
Tout1＝T3-T4
wherein, Tout1For the first outdoor temperature difference value, in addition, for the preset first outdoor temperature difference threshold value, the embodiment of the present invention may adopt Tout_thd1To perform the presentation. If Tout1＜Tout_thd1Then it can be determined that there is a suspected fault with the air conditioner.
It will be appreciated that the first outdoor temperature difference threshold Tout_thd1Can be 1.5 ℃ to 2.5 ℃, wherein, in order to achieve better detection effect, the first outdoor temperature difference threshold value Tout_thd1The value can be taken as 2 ℃.
In an embodiment, the present invention provides a flowchart of another detection method of an air conditioner, as shown in fig. 15, fig. 15 is a flowchart illustrating a range expansion of the first operation state parameter in steps S210 and S220 in fig. 2, and includes, but is not limited to, the following steps:
s813: acquiring a first compressor exhaust temperature value;
s823: and when the first compressor exhaust temperature value is smaller than a preset first compressor exhaust temperature threshold value, determining that the suspected fault exists in the air conditioner.
In the primary detection process, a first compressor exhaust temperature value is obtained after the compressor is controlled to operate for a first preset time under a first operation condition parameter, then the obtained first compressor exhaust temperature value is compared with a preset first compressor exhaust temperature threshold value, and if the first compressor exhaust temperature value is smaller than the preset first compressor exhaust temperature threshold value, suspected faults of the air conditioner are preliminarily determined.
In the examples of the present invention, forThe first compressor discharge temperature value can adopt TP1Wherein the first compressor discharge temperature threshold may be TP_thd1To perform the presentation. If TP1＜TP_thd1Then it can be determined that there is a suspected fault with the air conditioner.
It will be appreciated that the first compressor discharge temperature threshold TP_thd1Can be 70 ℃ to 100 ℃, wherein, in order to achieve better detection effect, the first compressor exhaust temperature threshold value TP_thd1Values of 75 ℃ are possible.
In an embodiment, the present invention provides a flowchart of another detection method of an air conditioner, as shown in fig. 16, fig. 16 is a flowchart illustrating a range expansion of the first operation state parameter in steps S210 and S220 in fig. 2, and includes, but is not limited to, the following steps:
s814: acquiring a surface temperature value of a first compressor;
s824: and when the first compressor surface temperature value is greater than a preset first compressor surface temperature threshold value, determining that the suspected fault exists in the air conditioner.
In the primary detection process, a first compressor surface temperature value is obtained after the compressor is controlled to operate for a first preset time under a first operation condition parameter, then the obtained first compressor surface temperature value is compared with a preset first compressor surface temperature threshold value, and if the first compressor surface temperature value is larger than the preset first compressor surface temperature threshold value, suspected faults of the air conditioner are preliminarily determined.
It should be noted that, in the embodiment of the present invention, T may be adopted for the first compressor surface temperature valuetoP1Wherein the first compressor surface temperature threshold may be Ttop_thd1To perform the presentation. If Ttop1＞Ttop_thd1Then it can be determined that there is a suspected fault with the air conditioner.
Secondly, as for the surface temperature value of the first compressor, the temperature of any position on the surface of the compressor can be collected, and because other parts attached to the top of the compressor are fewer in the actual installation process, the temperature sensor can be directly installed at the top of the compressor to obtain the surface temperature value of the first compressor, and the installation is simpler and more convenient.
It will be appreciated that the first compressor surface temperature threshold Ttop_thd1The value can be 90 ℃ to 120 ℃, wherein, in order to achieve better detection effect, the surface temperature threshold value T of the first compressortop_thd1Values of 105 ℃ may be taken.
Based on the above-mentioned embodiments of fig. 13 to 16, if the first indoor temperature difference T is obtained at the same timein1First outdoor temperature difference Tout1First compressor discharge temperature value TP1And a first compressor surface temperature value Ttop1(ii) a When T isin1＜Tin_thd1Or Tout1＜Tout_thd1Or TP1＜TP_thd1Or Ttop1＞Ttop_thd1It can be determined that the air conditioner has a suspected fault. However, when T isin1≥Tin_thd1And Tout1≥Tout_thd1And TP1≥TP_thd1And Ttop1≤Ttop_thd1It is directly determined that the air conditioner is in a normal state.
In an embodiment, the present invention provides a flowchart of another detection method of an air conditioner, as shown in fig. 17, fig. 17 is a flowchart illustrating a second operation state parameter after a range is expanded in steps S220 and S230 of fig. 2, and includes, but is not limited to, the following steps:
s911: a second indoor ambient temperature value and a second indoor unit evaporator coil temperature value;
s921: and calculating a second indoor temperature difference value between the second indoor environment temperature value and the second indoor unit evaporator coil temperature value, and determining that the air conditioner has a fault when the second indoor temperature difference value is smaller than a preset second indoor temperature difference threshold value.
And if the air conditioner has suspected faults, in the secondary detection process, a second indoor environment temperature value and a second indoor unit evaporator coil temperature value are obtained after the compressor is controlled to operate for a second preset time under a second operation condition parameter, then a second indoor temperature difference value between the second indoor environment temperature value and the second indoor unit evaporator coil temperature value is calculated based on the obtained second indoor environment temperature value and the second indoor unit evaporator coil temperature value, and if the calculated second indoor temperature difference value is smaller than a preset second indoor temperature difference threshold value, the air conditioner is finally confirmed to have faults.
It should be noted that, in the embodiment of the present invention, T may be adopted as the second indoor environment temperature value5It can be shown that T can be adopted for the above-mentioned second indoor machine evaporator coil temperature value6Wherein the second indoor temperature difference may be calculated by the following formula:
Tin2＝T5-T6
wherein, Tin2For the second indoor temperature difference value, in addition, for the preset second indoor temperature difference threshold value, the embodiment of the present invention may adopt Tin_thd2To perform the presentation. If Tin2＜Tin_thd2It may be finally determined that the air conditioner has a failure.
It will be appreciated that the second indoor temperature difference threshold Tin_thd2Can be between 2.5 ℃ and 3.5 ℃, wherein, in order to achieve better detection effect, the second indoor temperature difference threshold value Tin_thd2The value can be 3 ℃.
In an embodiment, the present invention provides a flowchart of another detection method of an air conditioner, as shown in fig. 18, fig. 18 is a flowchart illustrating a second operation state parameter after a range is expanded in steps S220 and S230 of fig. 2, and includes, but is not limited to, the following steps:
s912: a second outdoor unit condenser coil temperature value and a second outdoor environment temperature value;
s922: and calculating a second outdoor temperature difference value between the second outdoor unit condenser coil temperature value and a second outdoor environment temperature value, and determining that the air conditioner has a fault when the second outdoor temperature difference value is smaller than a preset second outdoor temperature difference threshold value.
And if the suspected fault exists in the air conditioner, in the secondary detection process, after the compressor is controlled to operate for a second preset time under a second operation condition parameter, acquiring a second outdoor unit condenser coil temperature value and a second outdoor environment temperature value, then calculating a second outdoor temperature difference value of the second outdoor unit condenser coil temperature value and the second outdoor environment temperature value based on the acquired second outdoor unit condenser coil temperature value and the second outdoor environment temperature value, and finally confirming that the fault exists in the air conditioner if the calculated second outdoor temperature difference value is smaller than a preset second outdoor temperature difference threshold value.
It should be noted that, in the embodiment of the present invention, T may be adopted as the temperature value of the second outdoor unit condenser coil7May adopt T for the second outdoor environment temperature value8Wherein the second outdoor temperature difference value can be calculated by the following formula:
Tout2＝T7-T8
wherein, Tout2For the second outdoor temperature difference value, in addition, for the preset second outdoor temperature difference threshold value, the embodiment of the present invention may adopt Tout_thd2To perform the presentation. If Tout2＜Tout_thd2It may be finally determined that the air conditioner has a failure.
It will be appreciated that the second outdoor temperature difference threshold Tout_thd2Can be between 2.5 ℃ and 3.5 ℃, wherein, in order to achieve better detection effect, the second outdoor temperature difference threshold value Tout_thd2The value can be 3 ℃.
In an embodiment, the present invention provides a flowchart of another detection method of an air conditioner, as shown in fig. 19, fig. 19 is a flowchart illustrating a second operation state parameter after a range is expanded in steps S220 and S230 of fig. 2, and includes, but is not limited to, the following steps:
s913: a second compressor discharge temperature value;
s923: when the second compressor exhaust temperature value is smaller than a preset second compressor exhaust temperature threshold value, determining that the air conditioner has a fault;
and if the suspected fault exists in the air conditioner, in the secondary detection process, the second compressor exhaust temperature value is obtained after the compressor is controlled to operate for the second preset time under the second operation condition parameter, then the obtained second compressor exhaust temperature value is compared with the preset second compressor exhaust temperature threshold value, and if the second compressor exhaust temperature value is smaller than the preset second compressor exhaust temperature threshold value, the fault exists in the air conditioner is finally confirmed.
It should be noted that, in the embodiment of the present invention, T may be adopted as the discharge temperature value of the second compressorP2Wherein the second compressor discharge temperature threshold may be TP_thd2To perform the presentation. If TP2＜TP_thd2It may be finally determined that the air conditioner has a failure.
It will be appreciated that the second compressor discharge temperature threshold TP_thd2The value can be 70 ℃ to 110 ℃, wherein, in order to achieve better detection effect, the exhaust temperature threshold value T of the second compressorP_thd2Values of 75 ℃ are possible.
In an embodiment, the present invention provides a flowchart of another detection method of an air conditioner, as shown in fig. 20, fig. 20 is a flowchart illustrating a second operation state parameter after a range is expanded in steps S220 and S230 of fig. 2, and includes, but is not limited to, the following steps:
s914: a second compressor surface temperature value;
s924: and when the second compressor surface temperature value is greater than a preset second compressor surface temperature threshold value, determining that the air conditioner has a fault.
And if the suspected fault exists in the air conditioner, in the secondary detection process, the surface temperature value of the second compressor is obtained after the compressor is controlled to operate for the second preset time under the second operation condition parameter, then the obtained surface temperature value of the second compressor is compared with the preset surface temperature threshold value of the second compressor, and if the surface temperature value of the second compressor is larger than the preset surface temperature threshold value of the second compressor, the fault exists in the air conditioner.
It should be noted that, in the embodiment of the present invention, T may be adopted for the above-mentioned second compressor surface temperature valuetop2Wherein the second compressor surface temperature threshold may be Ttop_thd2To perform the presentation. If Ttop2＞Ttop_thd2Then finally confirm the air conditionerThere is a fault.
Secondly, as for the surface temperature value of the second compressor, the temperature of any position on the surface of the compressor can be collected, and because other parts attached to the top of the compressor are fewer in the actual installation process, the surface temperature value of the second compressor can be obtained by directly installing the temperature sensor on the top of the compressor, and the installation is simpler and more convenient.
It will be appreciated that the second compressor surface temperature threshold Ttop_thd2The value can be 90 ℃ to 120 ℃, wherein, in order to achieve better detection effect, the surface temperature threshold value T of the second compressortop_thd2Values of 110 ℃ may be obtained.
Based on the above-mentioned embodiments of fig. 17 to 20, if the second indoor temperature difference T is obtained at the same timein2The second outdoor temperature difference Tout2A second compressor discharge temperature value TP2And a second compressor surface temperature value Ttop2(ii) a When T isin2＜Tin_thd2Or Tout2＜Tout_thd2Or TP2＜TP_thd2Or Ttop2＞Ttop_thd2It is finally determined that the air conditioner has a malfunction. However, when T isin2≥Tin_thd2And Tout2≥Tout_thd2And TP2≥TP_thd2And Ttop2≤Ttop_thd2Only then can the normal state of the air conditioner be directly determined.
In summary, based on the embodiments of fig. 3 to 20, in the primary detection process, more than one of the schemes in fig. 3, 5, 7, 8, and 13 to 16 may be adopted to determine whether the air conditioner has a suspected fault; in the secondary detection process, one or more schemes in fig. 4, 6, 9 to 12, and 17 to 20 may be adopted to finally determine whether the air conditioner is controlled to have a fault.
The various technical features in the above embodiments can be arbitrarily combined, so long as there is no conflict or contradiction between the combinations of the features, but the combination is limited by the space and is not described one by one, and therefore, any combination of the various technical features in the above embodiments also belongs to the scope disclosed in the present specification.
Based on the detection method and the operation control device of the air conditioner, another embodiment of the present invention provides an air conditioner, which includes a compressor and the operation control device 100 as described above, wherein the compressor is electrically connected with the operation control device 100.
Furthermore, it can be understood that the air conditioner of the embodiment of the present invention further includes a throttling device, an indoor unit evaporator and an outdoor unit condenser, wherein the indoor unit evaporator is provided with an indoor unit evaporator coil, and the outdoor unit condenser is provided with an outdoor unit condenser coil.
It should be noted that if the indoor ambient temperature, the outdoor ambient temperature, the indoor unit evaporator coil temperature, the outdoor unit condenser coil temperature, the compressor discharge temperature or the compressor surface temperature needs to be obtained, a temperature sensor may be disposed at a corresponding place.
Specifically, the air conditioner according to the embodiment of the present invention includes a compressor and an operation control device 100, where the operation control device 100 stores a first operation condition parameter, a second operation condition parameter, a first preset time and a second preset time, and in a process of detecting an operation state of the air conditioner, the operation control device 100 may control the compressor to operate for the first preset time under the first operation condition parameter and may control the compressor to operate for the second preset time under the second operation condition parameter, so as to obtain the corresponding first operation state parameter and second operation state parameter, and the operation control device 100 may further primarily determine an operation state of the air conditioner according to the first operation state parameter and then determine the operation state of the air conditioner again according to the second operation state parameter.
Since the air conditioner in this embodiment has the operation control device 100 in any of the embodiments, the air conditioner in this embodiment has the hardware structure of the operation control device 100 in the embodiments, and the control processor 110 in the operation control device 100 can call the control program of the air conditioner stored in the memory 120 to implement the detection method of the air conditioner.
The above-described embodiments of the apparatus are merely illustrative, wherein the units illustrated as separate components may or may not be physically separate, i.e. may be located in one place, or may also be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
Furthermore, an embodiment of the present invention also provides a computer-readable storage medium, which stores computer-executable instructions, which are executed by one or more control processors 110, for example, by one control processor 110 in fig. 1, and can cause the one or more control processors 110 to execute the detection method of the air conditioner in the above-described method embodiment, for example, execute the method steps in fig. 2 to 20 described above.
One of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the foregoing and various other changes, omissions and deviations in the form and detail thereof may be made without departing from the scope of this invention.

Claims (15)

1. A detection method of an air conditioner is characterized by comprising the following steps:
controlling a compressor to operate for a first preset time according to a first operating condition parameter, and acquiring a first operating state parameter of the air conditioner;
determining that the air conditioner has a suspected fault according to the first operation state parameter, controlling the compressor to operate for a second preset time according to a second operation condition parameter, and acquiring a second operation state parameter of the air conditioner;
and determining the operation state of the air conditioner according to the second operation state parameter.
2. The method for detecting the air conditioner according to claim 1, wherein the obtaining of the first operating state parameter of the air conditioner comprises: acquiring a first phase current parameter of the compressor;
correspondingly, the determining that the air conditioner has a suspected fault according to the first operation state parameter includes: and calculating a first phase current effective value of the compressor according to the first phase current parameter, and determining that the suspected fault exists in the air conditioner when the first phase current effective value is smaller than a preset first phase current effective threshold value.
3. The method for detecting the air conditioner according to claim 1, wherein the obtaining of the second operation state parameter of the air conditioner comprises: acquiring a second phase current parameter of the compressor;
correspondingly, the determining the operation state of the air conditioner according to the second operation state parameter includes: and calculating a second phase current effective value of the compressor according to the second phase current parameter, and determining that the air conditioner has a fault when the second phase current effective value is smaller than a preset second phase current effective threshold value.
4. The method for detecting the air conditioner according to claim 1, wherein the obtaining of the first operating state parameter of the air conditioner comprises: acquiring a first power parameter of the compressor;
correspondingly, the determining that the air conditioner has a suspected fault according to the first operation state parameter includes: and when the first power parameter is smaller than a preset first power threshold value, determining that the suspected fault exists in the air conditioner.
5. The method for detecting the air conditioner according to claim 1, wherein the obtaining of the second operation state parameter of the air conditioner comprises: acquiring a second power parameter of the compressor;
correspondingly, the determining the operation state of the air conditioner according to the second operation state parameter includes: and when the second power parameter is smaller than a preset second power threshold value, determining that the air conditioner has a fault.
6. The method for detecting the air conditioner according to claim 1, wherein the obtaining of the first operating state parameter of the air conditioner comprises: acquiring at least one of a first discharge pressure parameter and a first return pressure parameter of the compressor;
correspondingly, the determining that the air conditioner has the suspected fault according to the first operation state parameter includes at least one of the following:
when the first operation state parameter comprises the first exhaust pressure parameter and the first exhaust pressure parameter is larger than a preset first exhaust pressure threshold, determining that the suspected fault exists in the air conditioner;
and when the first operation state parameter comprises the first return pressure parameter and the first return pressure parameter is smaller than a preset first return pressure threshold value, determining that the suspected fault exists in the air conditioner.
7. The method for detecting the air conditioner according to claim 1, wherein the obtaining of the second operation state parameter of the air conditioner comprises: acquiring at least one of a second exhaust pressure parameter and a second return air pressure parameter of the compressor;
correspondingly, the determining the operation state of the air conditioner according to the second operation state parameter includes at least one of the following:
when the second operation state parameter comprises a second exhaust pressure parameter, and the second exhaust pressure parameter is greater than a preset second exhaust pressure threshold, determining that the air conditioner has a fault;
and when the second operation state parameter comprises a second return air pressure parameter, and the second return air pressure parameter is smaller than a preset second return air pressure threshold value, determining that the air conditioner has a fault.
8. The method for detecting the air conditioner according to claim 1, wherein the obtaining of the second operation state parameter of the air conditioner comprises: acquiring a second exhaust pressure parameter and a second return air pressure parameter of the compressor;
correspondingly, the determining the operation state of the air conditioner according to the second operation state parameter includes one of the following steps:
when the second exhaust pressure parameter is greater than a preset second exhaust pressure threshold value and the second return air pressure parameter is less than a preset second return air pressure threshold value, determining that the air conditioner has a blockage fault;
and when the second exhaust pressure parameter is smaller than a preset second exhaust pressure threshold value and the second return air pressure parameter is smaller than a preset second return air pressure threshold value, determining that the air conditioner has a refrigerant leakage fault.
9. The method for detecting the air conditioner according to claim 1, wherein the obtaining of the first operating state parameter of the air conditioner comprises: acquiring at least one of the following operating state parameters of the air conditioner:
a first indoor ambient temperature value and a first indoor unit evaporator coil temperature value;
a first outdoor unit condenser coil temperature value and a first outdoor environment temperature value;
a first compressor discharge temperature value;
a first compressor surface temperature value;
correspondingly, the determining that the air conditioner has the suspected fault according to the first operation state parameter includes at least one of the following:
when the first operation state parameter comprises the first indoor environment temperature value and the first indoor unit evaporator coil temperature value, calculating a first indoor temperature difference value between the first indoor environment temperature value and the first indoor unit evaporator coil temperature value, and when the first indoor temperature difference value is smaller than a preset first indoor temperature difference threshold value, determining that the suspected fault exists in the air conditioner;
when the first running state parameter comprises the first outdoor unit condenser coil temperature value and the first outdoor environment temperature value, calculating a first outdoor temperature difference value between the first outdoor unit condenser coil temperature value and the first outdoor environment temperature value, and when the first outdoor temperature difference value is smaller than a preset first outdoor temperature difference threshold value, determining that the suspected fault exists in the air conditioner;
when the first operation state parameter comprises the first compressor exhaust temperature value and the first compressor exhaust temperature value is smaller than a preset first compressor exhaust temperature threshold value, determining that the suspected fault exists in the air conditioner;
and when the first operation state parameter comprises the first compressor surface temperature value, and the first compressor surface temperature value is greater than a preset first compressor surface temperature threshold value, determining that the suspected fault exists in the air conditioner.
10. The method for detecting the air conditioner according to claim 1, wherein the obtaining of the second operation state parameter of the air conditioner comprises: acquiring at least one of the following operating state parameters of the air conditioner:
a second indoor ambient temperature value and a second indoor unit evaporator coil temperature value;
a second outdoor unit condenser coil temperature value and a second outdoor environment temperature value;
a second compressor discharge temperature value;
a second compressor surface temperature value;
correspondingly, the determining the operation state of the air conditioner according to the second operation state parameter includes at least one of the following:
when the second operation state parameter comprises a second indoor environment temperature value and a second indoor unit evaporator coil temperature value, calculating a second indoor temperature difference value between the second indoor environment temperature value and the second indoor unit evaporator coil temperature value, and when the second indoor temperature difference value is smaller than a preset second indoor temperature difference threshold value, determining that the air conditioner has a fault;
when the second operation state parameter comprises the second outdoor unit condenser coil temperature value and the second outdoor environment temperature value, calculating a second outdoor temperature difference value between the second outdoor unit condenser coil temperature value and the second outdoor environment temperature value, and when the second outdoor temperature difference value is smaller than a preset second outdoor temperature difference threshold value, determining that the air conditioner has a fault;
when the second operation state parameter comprises a second compressor exhaust temperature value and the second compressor exhaust temperature value is smaller than a preset second compressor exhaust temperature threshold value, determining that the air conditioner has a fault;
and when the second operation state parameter comprises a second compressor surface temperature value, and the second compressor surface temperature value is greater than a preset second compressor surface temperature threshold value, determining that the air conditioner has a fault.
11. The detection method of an air conditioner according to any one of claims 1 to 10, wherein: the first operating condition parameter and the second operating condition parameter include: the motor running frequency and/or the motor running speed of the compressor.
12. The detection method of an air conditioner according to claim 11, wherein: the first operating condition parameter and the second operating condition parameter further include: a cooling mode or a heating mode.
13. An operation control device characterized in that: comprises at least one control processor and a memory for communicative connection with the at least one control processor; the memory stores instructions executable by the at least one control processor to enable the at least one control processor to perform the method of detecting an air conditioner according to any one of claims 1 to 12.
14. An air conditioner, characterized in that: comprising a compressor and an operation control device according to claim 13, the compressor and the operation control device being electrically connected.
15. A computer-readable storage medium characterized by: the computer-readable storage medium stores computer-executable instructions for causing a computer to perform the method of detecting the air conditioner according to any one of claims 1 to 12.
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