CN110594955B - Control method and control device for self-repairing of air conditioner and air conditioner - Google Patents
Control method and control device for self-repairing of air conditioner and air conditioner Download PDFInfo
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- CN110594955B CN110594955B CN201910882944.9A CN201910882944A CN110594955B CN 110594955 B CN110594955 B CN 110594955B CN 201910882944 A CN201910882944 A CN 201910882944A CN 110594955 B CN110594955 B CN 110594955B
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/49—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring ensuring correct operation, e.g. by trial operation or configuration checks
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
Abstract
The invention provides a control method and a control device for self-repairing of an air conditioner and the air conditioner, wherein the control method for the self-repairing of the air conditioner comprises the following steps: during the continuous operation of the indoor unit of the air conditioner, judging whether the indoor environment detection temperature is abnormal or not according to the indoor environment detection temperature, the temperature of the coil pipe of the indoor unit and the change value and the correlation of the opening degree of the expansion valve; when the indoor environment detection temperature is abnormal, adjusting the sampling mode of the indoor environment detection temperature, or correcting the sampling mode of the indoor environment detection temperature, or controlling an indoor unit of the air conditioner to send out a fault prompt. The invention can automatically identify whether the indoor environment detection temperature is abnormal, so as to adjust the sampling mode of the indoor environment detection temperature, or correct the sampling mode of the indoor environment detection temperature, or control an indoor unit of the air conditioner to send out fault prompt, adjust output, improve comfort and reduce the complexity and cost of manual maintenance.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a control method and a control device for self-repairing of an air conditioner and the air conditioner.
Background
The air conditioner is a household appliance which is frequently used in life, and achieves the purpose of cooling indoor air by utilizing the principle of heat release by washing in the phase change process of a refrigerant. The indoor unit of the central air conditioner, especially the multi-connected indoor unit of the wind pipe type, is mostly installed in the suspended ceiling of the indoor room. Because the limitation of mounting means and operation, the ubiquitous mode of return air in the indoor set follow furred ceiling, this kind of return air mode can be because the inside difference in temperature with the room reality of furred ceiling, perhaps the inside air current of furred ceiling is inhomogeneous, can appear influencing the phenomenon of the judgement that indoor environment detected the temperature in the practice to further influence and set for the temperature and hardly reach, influence the travelling comfort and experience.
Disclosure of Invention
In order to solve at least one of the above problems, the present invention provides a control method for self-repairing of an air conditioner, including the following steps:
during the continuous operation of the indoor unit of the air conditioner, judging whether the indoor environment detection temperature is abnormal or not according to the indoor environment detection temperature, the temperature of the coil pipe of the indoor unit and the change value and the correlation of the opening degree of the expansion valve;
when the indoor environment detection temperature is abnormal, adjusting the sampling mode of the indoor environment detection temperature, or correcting the sampling mode of the indoor environment detection temperature, or controlling an indoor unit of the air conditioner to send a fault prompt.
By adopting the technical scheme, the invention can automatically identify whether the indoor environment detection temperature is abnormal, so as to adjust the sampling mode of the indoor environment detection temperature, or correct the sampling mode of the indoor environment detection temperature, or control the indoor unit of the air conditioner to send out fault prompt, adjust output, improve comfort and reduce the complexity and cost of manual maintenance.
Optionally, the "indoor environment detection temperature is abnormal" includes the following two cases:
when the installation position of the detection device for detecting the indoor environment temperature is unreasonable, the indoor environment detection temperature is abnormal;
or, when the detection device for detecting the indoor environment temperature is damaged, the indoor environment detection temperature is abnormal. This kind of mode is distinguished into two kinds of modes with indoor environment detection temperature anomaly, and indoor environment detection temperature's detection device mounted position is unreasonable promptly, and indoor environment detection temperature's detection device damages, can be directed against different circumstances, follow-up different measures of taking.
Optionally, the step of detecting the temperature, the temperature of the coil of the internal machine, and the variation value and the correlation of the opening degree of the expansion valve according to the indoor environment includes the following steps:
every time t during the continuous operation of the indoor unit of the air conditioner1Detecting and acquiring the ambient temperature detection value TaiThe temperature T of the coil pipe of the indoor unitpipeThe opening degree P of the throttle expansion valve;
calculating the environment temperature detection value TaiAnd the temperature T of the coil pipe of the indoor unitpipeTemperature difference of ∈ T ═ Tai－Tpipe；
Calculating a variation value DeltaT of the ambient temperature detection valueai；
Calculating the change value delta T of the temperature of the coil pipe of the indoor unitpipe；
Calculating a change value delta P of the opening degree of the throttle expansion valve;
judging the temperature difference epsilon and the change value delta TaiThe change value Delta TpipeAnd the change value Δ P satisfies condition one or condition two;
when the temperature difference epsilon and the change value delta TaiThe change value Delta TpipeWhen the change value delta P meets a condition I, judging that the indoor environment detection temperature is abnormal when the installation position of the detection device for detecting the indoor environment detection temperature is unreasonable;
when the temperature difference epsilon and the change value delta TaiThe change value Delta TpipeAnd when the change value Δ P satisfies a second condition, it is determined that the indoor environment detection temperature is abnormal when the detection device of the indoor environment detection temperature is damaged.
In this way, every time t1Detecting and acquiring the ambient temperature detection value TaiThe temperature T of the coil pipe of the indoor unitpipeThe opening P of the throttle expansion valve can continuously and real-timely carry out related detection and acquisition on the detection temperature of the indoor environment, the temperature of the coil pipe of the indoor unit and the change value and the correlation of the opening of the expansion valve, and provides a related numerical basis for subsequently taking different measures according to the condition one or the condition two.
Optionally, the t is1The values of (A) are: t is less than or equal to 15min1Less than or equal to 25 min. The mode can meet the requirement, and cannot frequently detect and acquire related numerical values.
Optionally, the first condition is:
the temperature difference epsilon is more than A,
and B < | change value DeltaTai|＜C，
And becomeChange value DeltaTpipe< D and | variation value DeltaTpipe|＞E，
And the variation value delta P is less than F and | the variation value delta P | is more than G;
the second condition is as follows:
the temperature difference epsilon is more than A,
and | the variation value Δ Tai|≤B，
And the variation value Delta Tpipe< D and | variation value DeltaTpipe|＞E，
And the variation Δ P < F and | variation Δ P | is > G. In this way, the device can be used,
optionally, the value of a is: a is more than or equal to 12 ℃ and less than or equal to 15 ℃;
the value of B is: b is more than or equal to 0.2 ℃ and less than or equal to 0.8 ℃;
the value of C is: c is more than or equal to 1 ℃ and less than or equal to 3 ℃;
the value of D is: 0;
the value of E is: e is more than or equal to 4 ℃ and less than or equal to 8 ℃;
the value of F is: 0;
the value of G is: g is more than or equal to 30pls and less than or equal to 50 pls.
This kind of mode, because when the detection device mounted position at indoor environment detection temperature was unreasonable, indoor environment detection temperature and indoor environment actual temperature were inconsistent, along with the air conditioner is opened, indoor environment actual temperature is reducing, and indoor unit coil pipe temperature can be more and more low, and the throttle expansion valve aperture also can be more and more low, but indoor environment detection temperature's variation range is less. Under normal conditions, the indoor environment detection temperature is lower and lower along with the opening of the air conditioner. Therefore, when the condition "one" is satisfied, it is determined that the indoor environment detection temperature is abnormal when the detection device for detecting the indoor environment detection temperature is installed at an improper position.
Because when the detection device for detecting the indoor environment temperature is damaged, the indoor environment detection temperature is inconsistent with the actual indoor environment temperature, and the indoor environment detection temperature cannot change. Under normal conditions, the indoor environment detection temperature, the indoor unit coil temperature and the expansion valve opening degree can be obviously reduced along with the opening of the air conditioner. Therefore, when the condition two is satisfied, it is determined that the detection device for detecting the indoor environment detection temperature is broken, and the indoor environment detection temperature is abnormal.
Optionally, the "adjusting the sampling mode of the indoor environment detection temperature, or correcting the sampling mode of the indoor environment detection temperature, or controlling the indoor unit of the air conditioner to send a fault prompt" includes the following steps:
judging whether an indoor unit of the air conditioner is connected with a control terminal;
when the 'when the installation position of the detection device for detecting the indoor environment temperature is unreasonable, the indoor environment detection temperature is abnormal' the following steps are carried out:
when the indoor unit of the air conditioner is connected with a control terminal, the sampling mode for adjusting the indoor environment detection temperature is as follows: acquiring the current indoor environment detection temperature through the control terminal;
when the indoor unit of the air conditioner is not connected with a control terminal, correcting the sampling mode of the indoor environment detection temperature;
when the "when the detection device for detecting the indoor environment temperature is damaged, the indoor environment detection temperature is abnormal" is:
when the indoor unit of the air conditioner is connected with a control terminal, the sampling mode for adjusting the indoor environment detection temperature is as follows: acquiring the current indoor environment detection temperature through the control terminal;
and when the indoor unit of the air conditioner is not connected with the control terminal, controlling the indoor unit of the air conditioner to send a fault prompt and reporting that the detection device for detecting the temperature of the indoor environment is damaged. In the mode, when the indoor unit of the air conditioner is connected with the control terminal or not connected with the control terminal, corresponding different measures can be set, and the application range is wide.
Optionally, the "sampling manner for correcting the indoor environment detection temperature" includes the following steps:
correcting the temperature T for the indoor environment detection temperature per time T2CorrectionAnd until the indoor environment detection temperature does not meet the condition one or the condition two. This kind of mode can carry out effectual correction to indoor environment detection temperature, canThe deviation that the indoor environment detection temperature is inconsistent with the indoor environment actual temperature caused by the unreasonable installation position of the detection device for detecting the indoor environment detection temperature is made up.
Optionally, the value of the time t2 is: t is less than or equal to 15min2≤25min；
Said temperature TCorrectionComprises the following steps: t is not less than-3 DEG CCorrectionAt most-1 ℃. The value range of the time t2 is preferably the same as the value of the time t1, and in this way, different measures can be taken in the next period according to the situation of the current period, and the complexity of steps is not increased due to the difference between the time t2 and the time t 1. Temperature TCorrectionThe value range of the method can meet the requirement, and the problem of inaccurate control precision caused by overlarge value range is solved.
The invention also provides a control device for self-repairing of an air conditioner, which executes the control method, and the control device comprises the following modules:
the first judgment module is used for judging whether the indoor environment detection temperature is abnormal or not according to the indoor environment detection temperature, the indoor unit coil temperature and the change value and the correlation of the opening degree of the expansion valve during the continuous operation of the indoor unit of the air conditioner;
and the first execution module is used for adjusting the sampling mode of the indoor environment detection temperature or correcting the sampling mode of the indoor environment detection temperature or controlling the indoor unit of the air conditioner to send a fault prompt when the indoor environment detection temperature is abnormal.
The invention also provides an air conditioner which executes the control method.
Drawings
FIG. 1 is a first flowchart of a control method for self-repairing of air conditioners in embodiment 1 of the present invention;
FIG. 2 is a second flowchart of a control method for self-repairing of air conditioners in embodiment 1 of the present invention;
fig. 3 is a schematic structural diagram of a control device for self-repairing of air conditioners in embodiment 2 of the present invention.
Description of reference numerals:
100-a first judgment module; 200-a first execution module.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. Sampling mode for detecting temperature in indoor environment
Example 1
In order to solve the problems in the prior art, the invention identifies the current state of the detection device of the indoor environment detection temperature according to the indoor environment detection temperature, the temperature of the coil pipe of the indoor unit and the change value and the correlation of the opening degree of the expansion valve during operation, and automatically processes according to the correlated state to ensure that the indoor environment detection temperature is consistent with the actual indoor environment temperature as much as possible, thereby more accurately adjusting the capacity output of the air conditioning unit and improving the comfort.
As shown in one of fig. 1-2, the present invention provides a control method for self-repairing of an air conditioner, which comprises the following steps:
s1, judging whether the indoor environment detection temperature is abnormal according to the indoor environment detection temperature, the indoor unit coil temperature and the change value and the correlation of the opening degree of the expansion valve during the continuous operation of the indoor unit of the air conditioner;
the "indoor environment detection temperature is abnormal" includes the following two conditions:
when the detection device for detecting the indoor environment temperature is unreasonable in installation position, the indoor environment detection temperature is abnormal; the detection device for detecting the temperature of the indoor environment can be one or more of temperature sensors;
or, when the detection device for detecting the indoor environment temperature is damaged, the indoor environment detection temperature is abnormal.
Specifically, detecting the temperature, the temperature of the coil of the internal machine and the change value and the correlation of the opening degree of the expansion valve according to the indoor environment comprises the following steps:
s11, during the continuous operation of the indoor unit of the air conditioner, every time t1Detecting and acquiring an ambient temperature detection value TaiIndoor unit coil temperature TpipeOpening degree P of the throttle expansion valve; wherein, t1The value of (A) is preferably: t is less than or equal to 15min1Less than or equal to 25min, more preferably 20 min.
S12, calculating the environmental temperature detection value TaiTemperature T of coil pipe of indoor unitpipeTemperature difference of ∈ T ═ Tai－Tpipe；
S13, calculating the change value delta T of the environment temperature detection valueai；
S14, calculating the change value delta T of the temperature of the coil pipe of the indoor unitpipe；
S15, calculating the change value delta P of the throttle opening degree;
s16, judging the temperature difference epsilon and the change value delta TaiChange value DeltaTpipeAnd the change value delta P satisfies the condition one or the condition two;
s161, with the condition one:
the temperature difference epsilon is more than A,
and B < | change value DeltaTai|＜C，
And the variation value Delta Tpipe< D and | variation value DeltaTpipe|＞E，
And the variation value delta P is less than F and | the variation value delta P | is more than G;
because when the detection device mounted position of indoor environment detection temperature was unreasonable, indoor environment detection temperature was inconsistent with indoor environment actual temperature, along with the air conditioner is opened, indoor environment actual temperature is reducing, and indoor machine coil pipe temperature can be more and more low, and throttle expansion valve opening also can be more and more low, but indoor environment detection temperature's variation range is less. Under normal conditions, the indoor environment detection temperature is lower and lower along with the opening of the air conditioner. Therefore, when the condition "one" is satisfied, it is determined that the installation position of the detection device for detecting the indoor environment detection temperature is not appropriate, and the indoor environment detection temperature is abnormal.
S162, the condition two is as follows:
the temperature difference epsilon is more than A,
and | the variation value Δ Tai|≤B，
And the variation value Delta Tpipe< D and | variation value DeltaTpipe|＞E，
And the variation Δ P < F and | variation Δ P | is > G.
Among them, the value of a is preferably: a is more than or equal to 12 ℃ and less than or equal to 15 ℃, and the more preferable temperature is 13 ℃;
the value of B is preferably: b is more than or equal to 0.2 ℃ and less than or equal to 0.8 ℃;
the value of C is preferably: c is more than or equal to 1 ℃ and less than or equal to 3 ℃, and more preferably is 2 ℃;
the value of D is preferably: 0;
the value of E is preferably: e is more than or equal to 4 ℃ and less than or equal to 8 ℃, and more preferably 5 ℃;
the value of F is preferably: 0;
the value of G is preferably: 30 pls.ltoreq.G.ltoreq.50 pls, more preferably 30 pls.
Because when the detection device for detecting the indoor environment temperature is damaged, the indoor environment detection temperature is inconsistent with the actual indoor environment temperature, and the indoor environment detection temperature cannot change. Under normal conditions, the indoor environment detection temperature, the indoor unit coil temperature and the expansion valve opening degree can be obviously reduced along with the opening of the air conditioner. Therefore, when the condition two is satisfied, it is determined that the detection device for detecting the indoor environment detection temperature is broken, and the indoor environment detection temperature is abnormal.
S17，When the temperature difference epsilon and the change value delta TaiChange value DeltaTpipeWhen the variation value delta P meets the condition, the indoor environment detection temperature is judged to be abnormal when the installation position of the detection device for detecting the indoor environment detection temperature is unreasonable;
s18, when the temperature difference epsilon, the change value delta TaiChange value DeltaTpipeAnd when the change value deltap satisfies the second condition, it is determined that the indoor environment detection temperature is abnormal when the detection device for detecting the indoor environment detection temperature is damaged.
And S2, when the indoor environment detection temperature is abnormal, adjusting the sampling mode of the indoor environment detection temperature, or correcting the sampling mode of the indoor environment detection temperature, or controlling an indoor unit of the air conditioner to send out a fault prompt.
The method comprises the following steps of adjusting a sampling mode of detecting the temperature of the indoor environment, correcting the sampling mode of detecting the temperature of the indoor environment, or controlling an indoor unit of the air conditioner to send a fault prompt:
s21, judging whether the indoor unit of the air conditioner is connected with a control terminal;
when the installation position of the detection device for detecting the indoor environment temperature is unreasonable, the indoor environment detection temperature is abnormal, the following steps are carried out:
and S22, when the indoor unit of the air conditioner is connected with a control terminal, adjusting the sampling mode of the indoor environment detection temperature as follows: acquiring the current indoor environment detection temperature through a control terminal;
s23, when the indoor unit of the air conditioner is not connected with the control terminal, correcting the sampling mode of the indoor environment detection temperature;
specifically, the "sampling mode for correcting the indoor environment detection temperature" includes the following steps:
correcting temperature T for indoor environment detection temperature per time T2CorrectionAnd until the indoor environment detection temperature does not meet the condition one or the condition two.
The value of time t2 is preferably: t is less than or equal to 15min2≤25min；
Temperature TCorrectionThe value of (A) is preferably: t is not less than-3 DEG CCorrection≤-1℃。
When "when the detection device for detecting the temperature of the indoor environment is damaged, the detection temperature of the indoor environment is abnormal", the following conditions are satisfied:
and S24, when the indoor unit of the air conditioner is connected with a control terminal, adjusting the sampling mode of the indoor environment detection temperature as follows: acquiring the current indoor environment detection temperature through a control terminal;
and S25, when the indoor unit of the air conditioner is not connected with the control terminal, controlling the indoor unit of the air conditioner to send a fault prompt and reporting that the detection device for detecting the temperature in the indoor environment is damaged.
The control terminal comprises one or two of a wire controller and a wireless remote controller.
The invention judges whether the indoor environment detection temperature is abnormal or not through the change values and the correlation of the indoor environment detection temperature, the temperature of the inner machine coil pipe and the opening degree of the expansion valve, identifies the current state of the detection device of the indoor environment detection temperature including whether the position is reasonable or whether the detection device is damaged or not according to whether the indoor environment detection temperature is abnormal or not, and adopts different measures according to different states. The invention can automatically identify whether the indoor environment detection temperature is abnormal or not, further adjust the sampling mode of the indoor environment detection temperature or correct the sampling mode of the indoor environment detection temperature, adjust the output, improve the comfort, or control the indoor unit of the air conditioner to send out a fault prompt, thereby reducing the complexity and the cost of manual maintenance.
Example 2
As shown in fig. 3, the present invention further provides a control device for self-repairing of an air conditioner, which executes the control method of embodiment 1, and the control device includes the following modules:
the first judgment module 100 is configured to judge whether an indoor environment detection temperature is abnormal or not according to a change value and correlation of an indoor environment detection temperature, an indoor unit coil temperature and an expansion valve opening degree during continuous operation of an indoor unit of an air conditioner;
the first execution module 200 is configured to, when the indoor environment detection temperature is abnormal, adjust a sampling mode of the indoor environment detection temperature, or correct the sampling mode of the indoor environment detection temperature, or control an indoor unit of the air conditioner to send a fault prompt.
Example 3
The present invention provides a storage medium including a stored program, wherein the program executes the control method of any one of the above-described embodiments 1.
Example 4
The invention provides a processor, which is used for running a program, wherein the program executes the control method of any one of the embodiment 1 when running.
Example 5
The present invention also provides an air conditioner that performs the control method of embodiment 1 described above.
Other parts of the air conditioner are all in the prior art, and are not described in detail herein.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A control method for self-repairing of an air conditioner is characterized by comprising the following steps: the control method comprises the following steps:
during the continuous operation of the indoor unit of the air conditioner, judging whether the indoor environment detection temperature is abnormal or not according to the indoor environment detection temperature, the temperature of the coil pipe of the indoor unit and the change value and the correlation of the opening degree of the expansion valve;
when the indoor environment detection temperature is abnormal, adjusting the sampling mode of the indoor environment detection temperature, or correcting the sampling mode of the indoor environment detection temperature, or controlling an indoor unit of the air conditioner to send a fault prompt;
the method for detecting the temperature, the temperature of the coil pipe of the internal machine and the change value and the correlation of the opening degree of the expansion valve according to the indoor environment comprises the following steps of:
every time t during the continuous operation of the indoor unit of the air conditioner1Detecting and acquiring indoor ambient temperatureMeasured value TaiIndoor unit coil temperature TpipeThe opening degree P of the expansion valve;
calculating the indoor ambient temperature detection value TaiAnd the temperature T of the coil pipe of the indoor unitpipeTemperature difference of ∈ T ═ Tai－Tpipe；
Calculating the change value delta T of the indoor environment detection temperatureai；
Calculating the change value delta T of the temperature of the coil pipe of the indoor unitpipe；
Calculating a variation value delta P of the opening degree of the expansion valve;
judging the temperature difference epsilon and the change value delta TaiThe change value Delta TpipeAnd the change value Δ P satisfies condition one or condition two;
when the temperature difference epsilon and the change value delta TaiThe change value Delta TpipeWhen the change value delta P meets a condition I, judging that the indoor environment detection temperature is abnormal when the installation position of the detection device for detecting the indoor environment detection temperature is unreasonable;
when the temperature difference epsilon and the change value delta TaiThe change value Delta TpipeAnd when the change value Δ P satisfies a second condition, it is determined that the indoor environment detection temperature is abnormal when the detection device of the indoor environment detection temperature is damaged.
2. The control method according to claim 1, characterized in that: the "indoor environment detection temperature abnormality" includes the following two cases:
when the installation position of the detection device for detecting the indoor environment temperature is unreasonable, the indoor environment detection temperature is abnormal;
or, when the detection device for detecting the indoor environment temperature is damaged, the indoor environment detection temperature is abnormal.
3. The control method according to claim 1, characterized in that: said t is1The values of (A) are: t is less than or equal to 15min1≤25min。
4. The control method according to claim 1, characterized in that: the first condition is as follows:
the temperature difference epsilon is more than A,
and B < | change value DeltaTai|＜C，
And the variation value Delta Tpipe< D and | variation value DeltaTpipe|＞E，
And the variation value delta P is less than F and | the variation value delta P | is more than G;
the second condition is as follows:
the temperature difference epsilon is more than A,
and | the variation value Δ Tai|≤B，
And the variation value Delta Tpipe< D and | variation value DeltaTpipe|＞E，
And the variation Δ P < F and | variation Δ P | is > G.
5. The control method according to claim 4, characterized in that: the value of A is: a is more than or equal to 12 ℃ and less than or equal to 15 ℃;
the value of B is: b is more than or equal to 0.2 ℃ and less than or equal to 0.8 ℃;
the value of C is: c is more than or equal to 1 ℃ and less than or equal to 3 ℃;
the value of D is: 0;
the value of E is: e is more than or equal to 4 ℃ and less than or equal to 8 ℃;
the value of F is: 0;
the value of G is: g is more than or equal to 30pls and less than or equal to 50 pls.
6. The control method according to claim 1, characterized in that: the step of adjusting the sampling mode of the indoor environment detection temperature, or correcting the sampling mode of the indoor environment detection temperature, or controlling the indoor unit of the air conditioner to send out a fault prompt comprises the following steps:
judging whether an indoor unit of the air conditioner is connected with a control terminal;
when the 'when the installation position of the detection device for detecting the indoor environment temperature is unreasonable, the indoor environment detection temperature is abnormal' the following steps are carried out:
when the indoor unit of the air conditioner is connected with a control terminal, the sampling mode for adjusting the indoor environment detection temperature is as follows: acquiring the current indoor environment detection temperature through the control terminal;
when the indoor unit of the air conditioner is not connected with a control terminal, correcting the sampling mode of the indoor environment detection temperature;
when the "when the detection device for detecting the indoor environment temperature is damaged, the indoor environment detection temperature is abnormal" is:
when the indoor unit of the air conditioner is connected with a control terminal, the sampling mode for adjusting the indoor environment detection temperature is as follows: acquiring the current indoor environment detection temperature through the control terminal;
and when the indoor unit of the air conditioner is not connected with the control terminal, controlling the indoor unit of the air conditioner to send a fault prompt and reporting that the detection device for detecting the temperature of the indoor environment is damaged.
7. The control method according to claim 6, characterized in that: the sampling mode for correcting the indoor environment detection temperature comprises the following steps:
correcting the temperature T for the indoor environment detection temperature per time T2CorrectionAnd until the indoor environment detection temperature does not meet the condition one or the condition two.
8. The control method according to claim 7, characterized in that: the value of the time t2 is: t is less than or equal to 15min2≤25min；
Said temperature TCorrectionComprises the following steps: t is not less than-3 DEG CCorrection≤-1℃。
9. A control device of self-repairing of an air conditioner is characterized in that: which performs the control method of any one of claims 1-8, the control device comprising the following modules:
the first judgment module (100) is used for judging whether the indoor environment detection temperature is abnormal or not according to the indoor environment detection temperature, the indoor unit coil temperature and the change value and the correlation of the opening degree of the expansion valve during the continuous operation period of the indoor unit of the air conditioner;
and the first execution module (200) is used for adjusting the sampling mode of the indoor environment detection temperature or correcting the sampling mode of the indoor environment detection temperature or controlling the indoor unit of the air conditioner to send a fault prompt when the indoor environment detection temperature is abnormal.
10. An air conditioner, characterized in that: which performs the control method of any one of claims 1-8.
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