CN113776174B - Method and device for detecting reverse rotation of air conditioner compressor, air conditioner and storage medium - Google Patents
Method and device for detecting reverse rotation of air conditioner compressor, air conditioner and storage medium Download PDFInfo
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- CN113776174B CN113776174B CN202111111085.7A CN202111111085A CN113776174B CN 113776174 B CN113776174 B CN 113776174B CN 202111111085 A CN202111111085 A CN 202111111085A CN 113776174 B CN113776174 B CN 113776174B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- 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
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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
- F24F11/70—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
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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
- F24F2140/10—Pressure
- F24F2140/12—Heat-exchange fluid pressure
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Abstract
The invention discloses a method for detecting reverse rotation of an air conditioner compressor, which comprises the steps of acquiring a compressor temperature change parameter between the middle temperature of the compressor and the oil pool temperature of the compressor when the air conditioner is in a starting state; judging whether the temperature change parameter of the compressor meets a preset fault condition or not; and if the temperature change parameter of the compressor meets the preset fault condition, determining that the compressor is in a reverse rotation state. The method and the device for detecting the reverse rotation of the air conditioner compressor, the air conditioner and the storage medium can effectively shorten the detection time of whether the reverse rotation of the compressor occurs or not and improve the real-time performance of the detection.
Description
Technical Field
The present invention relates to the field of air conditioning control technologies, and in particular, to a method and an apparatus for detecting reverse rotation of an air conditioner compressor, an air conditioner, and a storage medium.
Background
Along with the improvement of the living standard of people, the air conditioner becomes a household common electrical appliance, and the current temperature is more suitable by adjusting the temperature because the air conditioner can be used for temperature adjustment, so that the user experience can be effectively improved.
In the related art, when the compressor of the air conditioner reverses, the exhaust valve plate is not opened, lubricating oil cannot be pumped into the cylinder normally, so that the compressor loses a compression function, a pump body moving surface rapidly heats after long-time operation, oil film coverage is insufficient, oil shortage and abrasion of mechanical parts of the pump body can occur, in order to detect whether the compressor reverses, parameters such as indoor pipe temperature, indoor environment temperature and input power phase angle are detected, but the time for acquiring the parameters and the time for calculating the parameters need more time, so that the detection time for detecting whether the compressor reverses is longer, and the problem of poor detection instantaneity is caused.
Disclosure of Invention
The embodiment of the invention provides a method and a device for detecting reverse rotation of an air conditioner compressor, an air conditioner and a storage medium, which can effectively shorten the detection time of whether the reverse rotation of the compressor occurs and improve the real-time performance of detection.
An embodiment of the present invention provides a method for detecting reverse rotation of an air conditioner compressor, including:
judging whether the temperature change parameter of the compressor meets a preset fault condition or not;
and if the temperature change parameter of the compressor meets the preset fault condition, determining that the compressor is in a reverse rotation state.
Optionally, the determining whether the temperature variation parameter of the compressor meets a preset fault condition includes:
and judging whether the temperature change parameter of the compressor is not more than a first set threshold value.
Optionally, when the air conditioner is in a start state, the method further includes:
acquiring a target temperature change parameter of the compressor in a set time interval;
judging whether the target temperature change parameter meets a preset abnormal operation condition or not;
and if the target temperature change parameter meets the abnormal operation condition, executing the step of acquiring the compressor temperature change parameter between the middle temperature of the compressor and the oil pool temperature of the compressor.
Optionally, the acquiring the target temperature variation parameter of the compressor in the set time interval includes:
and obtaining a top target temperature change parameter of the compressor in a first time interval, wherein the first set time is used as the set time interval, and the top temperature change parameter is used as the target temperature change parameter.
Optionally, the obtaining a top temperature variation parameter of the compressor in a first time interval includes:
Acquiring a first top temperature of the compressor at a first moment and acquiring a second top temperature of the compressor at a second moment, wherein a time interval between the first moment and the second moment is the first time interval;
and acquiring the top target temperature change parameter according to the first top temperature and the second top temperature.
Optionally, the determining whether the target temperature change parameter meets a preset abnormal operation condition includes:
judging whether the top temperature change parameter is smaller than a first temperature preset threshold value or not, and acquiring a first judgment result;
and judging whether the target temperature change parameter meets the abnormal operation condition according to the first judgment result.
Optionally, the acquiring the target temperature variation parameter of the compressor in the set time interval includes:
and obtaining an exhaust gas temperature change parameter of the compressor in a second time interval, wherein the second set time is used as the set time interval, and the exhaust gas temperature change parameter is used as the target temperature change parameter.
Optionally, the acquiring the exhaust gas temperature variation parameter of the compressor in the second time interval includes:
Acquiring a first discharge temperature of the compressor at a third time and acquiring a second discharge temperature of the compressor at a fourth time, wherein a time interval between the third time and the fourth time is the second time interval;
and acquiring the top target temperature change parameter according to the first exhaust temperature and the second exhaust temperature.
Optionally, the determining whether the target temperature change parameter meets a preset abnormal operation condition includes:
judging whether the exhaust target temperature change parameter is smaller than a second temperature preset threshold value or not, and acquiring a second judgment result;
and judging whether the target temperature change parameter meets the abnormal operation condition according to the second judgment result.
Optionally, before obtaining the compressor temperature variation parameter between the middle temperature of the compressor and the oil sump temperature of the compressor, the method further comprises:
acquiring a pressure difference parameter of high and low pressure when the compressor runs to the highest set frequency;
and judging whether the pressure difference parameter is smaller than the second set threshold value.
Optionally, the determining that the compressor is in a reverse state includes:
If the differential pressure parameter is smaller than the second set threshold value, judging whether the temperature change parameter of the compressor is not larger than the first set threshold value or not;
and if the temperature change parameter of the compressor is not larger than the first set threshold value, determining that the compressor is in the reverse rotation state.
Optionally, after determining that the compressor temperature variation parameter is not greater than the first set threshold, the method further includes:
and controlling the compressor to be in the stop state and/or outputting alarm information.
The second aspect of the present invention provides a device for detecting reverse rotation of an air conditioner compressor, comprising:
the parameter detection module is used for acquiring a compressor temperature change parameter between the middle temperature of the compressor and the oil pool temperature of the compressor when the air conditioner is in a starting state;
the condition judging module is used for judging whether the temperature change parameter of the compressor meets a preset fault condition or not; and if the temperature change parameter of the compressor meets the preset fault condition, determining that the compressor is in a reverse rotation state.
The third aspect of the present invention provides an air conditioner, comprising an air conditioner body, a memory and a compressor provided in the air conditioner body, and one or more programs, wherein the one or more programs are stored in the memory, and are configured to be executed by the one or more processors, and the one or more programs include operation instructions corresponding to the detection method for reversing the air conditioner compressor provided in the first aspect.
A fourth aspect of the present application provides a computer-readable storage medium having stored thereon a computer program, characterized in that the program when executed by a processor implements the steps corresponding to the method for detecting reverse rotation of an air conditioner compressor as provided in the first aspect.
The above-mentioned one or at least one technical scheme in the embodiment of the application has at least the following technical effects:
according to the technical scheme, when the air conditioner is in the starting state, the obtained compressor temperature change parameter between the middle temperature of the compressor and the oil sump temperature of the compressor is judged, if the obtained compressor temperature change parameter meets the preset fault condition, the compressor is determined to be in the reversing state, so that the middle temperature and the oil sump temperature of the compressor belong to the internal parameters of the air conditioner, the air conditioner can be obtained in real time through the sensor, and whether the compressor is in the reversing state can be determined through judgment after the internal parameters of the air conditioner are obtained.
Drawings
Fig. 1 is a flow chart of a method for detecting reverse rotation of an air conditioner compressor according to an embodiment of the present application;
fig. 2 is an overall step diagram of a method for detecting reverse rotation of an air conditioner compressor according to an embodiment of the present application;
fig. 3 is a block diagram of a detecting device for reverse rotation of an air conditioner compressor according to an embodiment of the present application.
Detailed Description
The main implementation principle, the specific implementation manner and the corresponding beneficial effects of the technical scheme of the embodiment of the application are described in detail below with reference to the accompanying drawings.
Examples
Referring to fig. 1, an embodiment of the present application provides a method for detecting reverse rotation of an air conditioner compressor, including:
s101, acquiring a compressor temperature change parameter between the middle temperature of the compressor and the oil pool temperature of the compressor when the air conditioner is in a starting state;
s102, judging whether the temperature change parameter of the compressor meets a preset fault condition or not;
and S103, if the temperature change parameter of the compressor meets the preset fault condition, determining that the compressor is in a reverse rotation state.
In the embodiment of the present specification, the air conditioner may be a refrigeration air conditioner, a heating air conditioner, a cooling and heating air conditioner, or the like.
Wherein, in step S101, after the air conditioner is started, the air conditioner is placed in a start state, so that the middle temperature and the oil pool temperature of the compressor can be obtained through the temperature sensor, and after the middle temperature and the oil pool temperature are obtained, the compressor temperature variation parameter is obtained according to the obtained middle temperature and oil pool temperature.
In particular, T can be used to obtain the temperature of the middle part of the compressor M The temperature of the oil pool can be represented by T C A representation; and determining the temperature change parameter of the compressor according to the acquired middle temperature and the oil pool temperature.
Specifically, the third difference between the middle temperature and the oil pool temperature may be used as a compressor temperature variation parameter, or after the third difference is obtained, a product of the third difference and a corresponding third weight may be used as a pressure difference parameter, where the third weight may be set by a person or an air conditioner, may be set according to an actual requirement, and may be, for example, 0.92, 0.95, 0.85, and the like.
For example, with the intermediate temperature T M And the temperature of the oil pool is T C For example, if the third difference between the middle temperature and the oil pool temperature is used as the compressor temperature variation parameter and the compressor temperature variation parameter Delta T for number 3 Indicating at this time, deltaT 3 ＝T M -T C 。
After the compressor temperature variation parameter is acquired, step S102 is performed.
In step S102, it may be determined whether the compressor temperature variation parameter is not greater than a first set threshold, if not greater than the first set threshold; step S103 is executed if the compressor temperature change parameter is judged to meet the preset fault condition; if the temperature change parameter of the compressor is not satisfied, judging that the temperature change parameter of the compressor does not satisfy the preset fault condition.
In the embodiment of the present specification, the first set threshold may be, for example, -3 to-10 ℃, 2 to-9 ℃, 4 to-14 ℃, and the like. Preferably, the first set threshold is-3 to-10 ℃, the value of the first set threshold is negative temperature, because the body moves to generate heat, the reverse exhaust valve plate cannot be opened, the oil cannot reach the inside of the cylinder to dissipate heat through the pump, and the heat is blocked and transferred to the oil pool, so that the temperature of the oil pool is higher than that of the middle part.
If it is determined in step S102 that the compressor temperature variation parameter satisfies the preset fault condition, step S103 is performed.
In step S103, if it is determined that the temperature variation parameter of the compressor is not greater than the first set threshold, it is determined that the compressor is in a reverse rotation state, and the compressor is controlled to be in a stop state. Of course, when the compressor is controlled to be in a stop state, alarm information can be output, for example, the alarm information can be ringing sound or the alarm information such as "the air conditioner fails" or "the compressor is reversed" or the fault code is transmitted to a user side through a wireless network and displayed, and the user side can be a smart phone, a tablet personal computer, a smart watch and the like.
According to the technical scheme, when the air conditioner is in the starting state, the obtained compressor temperature change parameter between the middle temperature of the compressor and the oil sump temperature of the compressor is judged, if the obtained compressor temperature change parameter meets the preset fault condition, the compressor is determined to be in the reversing state, so that the middle temperature and the oil sump temperature of the compressor belong to the internal parameters of the air conditioner, the air conditioner can be obtained in real time through the sensor, and whether the compressor is in the reversing state can be determined through judgment after the internal parameters of the air conditioner are obtained.
In another embodiment of the present disclosure, when the air conditioner is in a start state, a target temperature variation parameter of the compressor within a set time interval is also obtained; judging whether the target temperature change parameter meets a preset abnormal operation condition or not; and if the target temperature change parameter meets the abnormal operation condition, executing the step of acquiring the compressor temperature change parameter between the middle temperature of the compressor and the oil pool temperature of the compressor.
Specifically, when the air conditioner is in a starting state, a top temperature change parameter of the compressor in a first time interval can be obtained, wherein the first set time is taken as the set time interval, the top temperature change parameter is taken as a target temperature change parameter, whether the top temperature change parameter meets abnormal operation conditions is judged, and if yes, the step of obtaining the compressor temperature change parameter between the middle temperature of the compressor and the oil pool temperature of the compressor is executed.
In this embodiment of the present disclosure, the first time interval may be set by a person or an air conditioner, and may be set according to actual needs, where the range of values of the first time interval may be, for example, 3-5 seconds(s), 2-6s, 3-8s, and so on. Preferably, the first time interval is 3-5s.
In particular, a first top temperature of the compressor may be obtained at a first time and a second top temperature of the compressor may be obtained at a second time, wherein a time interval between the first time and the second time is a first time interval; and obtaining the top temperature change parameter according to the first top temperature and the second top temperature.
In the present embodiment, the second time is generally after the first time.
Specifically, a first difference between the first top temperature and the second top temperature may be obtained as a top temperature variation parameter, and a product of the first difference and a corresponding first weight may be used as the top temperature variation parameter after the first difference is obtained, where the first weight may be set by a person or an air conditioner, may be set according to an actual requirement, and may be, for example, 0.9, 0.98, 0.85, and the like.
For example, taking a first time interval of 4s as an example, a first top temperature of the compressor is obtained at a first time, denoted by T1, a 4 th time after the first time is taken as a second time, a second top temperature of the compressor is obtained at the second time, denoted by T2, and then a top temperature variation parameter is obtained by DeltaT 1 Indicating at this time, deltaT 1 ＝T2-T1。
When the top temperature variation parameter is used as a target temperature variation parameter, firstly acquiring the top temperature variation parameter, so after acquiring the top temperature variation parameter, firstly judging whether the top temperature variation parameter is smaller than a first temperature preset threshold value or not, and acquiring a first judgment result; judging whether the target temperature change parameter meets abnormal operation conditions according to the first judgment result; if so, executing the step of acquiring the compressor temperature change parameter between the middle temperature of the compressor and the oil pool temperature of the compressor, and if not, determining that the compressor is in a normal running state, and not performing any operation.
In this embodiment of the present disclosure, the first temperature preset threshold may be set by a person or an air conditioner, and may be set according to actual needs, where the range of values of the first temperature preset threshold may be, for example, 5-10 ℃,4-9 ℃, 7-14 ℃, and the like. Preferably, the first temperature preset threshold is 5-10 ℃.
Specifically, if the first judgment result indicates that the top temperature variation parameter is smaller than the first temperature preset threshold, judging that the target temperature variation parameter meets abnormal operation conditions, and further executing the step of acquiring the compressor temperature variation parameter between the middle temperature of the compressor and the oil pool temperature of the compressor; if the first judgment result indicates that the top temperature change parameter is not smaller than the first temperature preset threshold, the compressor is determined to be in a normal running state, and no operation can be performed.
For example, the temperature change parameter at the top is delta T 1 For example, if DeltaT 1 4 ℃, and the first temperature preset threshold is 7 ℃, due to 4<7, determining that the first judgment result indicates that the top temperature change parameter is smaller than a first temperature preset threshold, and executing the step of obtaining the compressor temperature change parameter between the middle temperature of the compressor and the oil sump temperature of the compressor; if DeltaT 1 10 ℃, and the first temperature preset threshold is 8 ℃, due to 8 DEG C<And 10, determining that the first judgment result indicates that the top temperature change parameter is not smaller than a first temperature preset threshold, and determining that the compressor is in a normal running state.
In another embodiment of the present disclosure, the exhaust gas temperature variation parameter of the compressor in the second time interval may be obtained when the target temperature variation parameter of the compressor in the set time interval is obtained, where the second set time is the set time interval and the exhaust gas temperature variation parameter is the target temperature variation parameter.
In this embodiment of the present disclosure, the second time interval may be set by a person or by an air conditioner, and may be set according to actual needs, where the range of values of the second time interval may be, for example, 8-10 seconds(s), 7-12s, 9-14s, and so on. Preferably, the first time interval is 8-10s.
In the implementation process, the first exhaust temperature of the compressor can be obtained at a third time, and the second exhaust temperature of the compressor can be obtained at a fourth time, wherein the time interval between the third time and the fourth time is a second time interval; and acquiring a top temperature change parameter according to the first exhaust temperature and the second exhaust temperature.
In the present embodiment, the fourth time is generally after the third time.
Specifically, a second difference between the first exhaust temperature and the second exhaust temperature may be obtained as an exhaust temperature variation parameter, and a product of the second difference and a corresponding second weight may be used as the exhaust temperature variation parameter after the second difference is obtained, where the second weight may be set by a person or an air conditioner, may be set according to an actual requirement, and the second weight may be, for example, 0.9, 0.98, 0.85, and the like.
For example, taking the second time interval of 9s as an example, the first discharge temperature of the compressor is obtained at the third time point and denoted by T3, the 9 th after the third time point is taken as the fourth time point, the second discharge temperature of the compressor is obtained at the fourth time point and denoted by T4, and then the discharge temperature variation parameter is obtained by Δt 2 Indicating at this time, deltaT 2 ＝T4-T3。
After the exhaust temperature variation parameters of the compressor in the second time interval are obtained, judging whether the exhaust temperature variation parameters are smaller than a second temperature preset threshold value or not, and obtaining a second judging result; and judging whether the target temperature change parameter meets abnormal operation conditions according to the second judgment result. If so, executing the step of acquiring the compressor temperature change parameter between the middle temperature of the compressor and the oil pool temperature of the compressor, and if not, determining that the compressor is in a normal running state, and not performing any operation.
In this embodiment of the present disclosure, the second temperature preset threshold may be set by a person or an air conditioner, and may be set according to actual needs, where the range of values of the second temperature preset threshold may be, for example, 8-10 ℃,6-9 ℃, 9-14 ℃, and the like. Preferably, the second temperature preset threshold is 8-10 ℃.
Specifically, if the second judgment result indicates that the exhaust temperature variation parameter is smaller than the second temperature preset threshold, judging that the target temperature variation parameter meets abnormal operation conditions, and further executing the step of acquiring the compressor temperature variation parameter between the middle temperature of the compressor and the oil pool temperature of the compressor; if the second judgment result indicates that the exhaust temperature change parameter is not smaller than the second temperature preset threshold value, the compressor is determined to be in a normal running state, and no operation can be performed.
For example, the exhaust temperature change parameter is DeltaT 2 For example, if DeltaT 2 At 6℃and a second temperature preset threshold of 9℃due to 6<9, determining that the second judgment result indicates that the exhaust temperature change parameter is smaller than a second temperature preset threshold, and executing the step of obtaining the compressor temperature change parameter between the middle temperature of the compressor and the oil sump temperature of the compressor; if DeltaT 2 11℃and a second temperature preset threshold of 10℃due to 10<And 11, determining that the second judgment result indicates that the exhaust temperature change parameter is not smaller than a second temperature preset threshold, and determining that the compressor is in a normal running state.
In another embodiment of the present disclosure, after determining that the target temperature variation parameter meets the abnormal operating condition, before the step of obtaining the compressor temperature variation parameter between the middle temperature of the compressor and the oil sump temperature of the compressor, the frequency of the compressor may be further operated to the highest set frequency, and the pressure difference parameter of the high and low pressures when the compressor is operated at the highest set frequency may be obtained.
Specifically, when acquiring the pressure difference parameter, the high pressure parameter of the compressor when operating at the highest set frequency can be acquired by setting a high pressure gauge in the compressor, and T can be used H The expression that T can be used for obtaining the low-pressure parameters of the compressor when the compressor operates at the highest set frequency through a mortgage table arranged in the compressor L A representation; and determining the pressure difference parameter according to the acquired high pressure parameter and low pressure parameter.
Specifically, the fourth difference between the high-pressure parameter and the low-pressure parameter may be used as a differential pressure parameter, or after the fourth difference is obtained, a product of the fourth difference and a corresponding fourth weight may be used as the differential pressure parameter, where the fourth weight may be set by a person or an air conditioner, may be set according to an actual requirement, and may be, for example, 0.9, 0.98, 0.85, and the like.
For example, with the high-voltage parameter being T H And the low pressure parameter is T L For example, if the fourth difference between the high pressure parameter and the low pressure parameter is taken as the differential pressure parameter and the differential pressure parameter is denoted by Δp, at this time, Δp=t H -T L 。
Specifically, if the pressure difference parameter is also obtained before the compressor temperature variation parameter is obtained, at this time, it may be first determined whether the pressure difference parameter is smaller than the second set threshold; if the differential pressure parameter is smaller than the second set threshold value, continuing to judge whether the temperature change parameter of the compressor is not larger than the first set threshold value; and if the differential pressure parameter is smaller than the second set threshold value and the compressor temperature change parameter is not larger than the first set threshold value, determining that the compressor is in a reverse rotation state and controlling the compressor to be in a stop state. At this time, the accuracy of determining that the compressor is in the reverse state can be made higher by two determinations of the differential pressure parameter and the compressor temperature variation parameter.
Of course, it is also possible to determine whether the differential pressure parameter is smaller than the second set threshold and whether the compressor temperature variation parameter is not larger than the first set threshold at the same time, and determine that the compressor is in the reverse state and control the compressor to be in the shutdown state when it is determined that the differential pressure parameter is smaller than the second set threshold and the compressor temperature variation parameter is not larger than the first set threshold. Whether the temperature change parameter of the compressor is not larger than the first set threshold value can be judged first, and whether the pressure difference parameter is smaller than the second set threshold value can be judged.
In this embodiment, the second set threshold may be set by a person or by an air conditioner, and may be set according to actual needs, and the second set threshold may be, for example, 0-0.2Mpa,0-0.4Mpa, 0.1-0.6Mpa, and the like. Preferably, the second set threshold is 0-0.2Mpa.
Specifically, when the differential pressure parameter is not less than the second set threshold value, it can be determined that the compressor is the cause of starting due to unbalanced internal pressure of the system, and at this time, the acquisition of the target temperature variation parameter of the compressor in the set time interval can be continuously performed; and judging whether the target temperature change parameter meets the preset abnormal operation condition. When the differential pressure parameter is judged to be smaller than the second set threshold value, the possibility that the compressor is reversed or the compressor is not started can be judged; therefore, it is necessary to further determine whether the temperature variation parameter of the compressor is not greater than the first set threshold, and if the temperature variation parameter of the compressor is not greater than the first set threshold, at this time, it may be determined that the temperature of the middle portion is lower than the temperature of the oil sump, and the condition that the compressor is not started is eliminated, at this time, it may be accurately determined that the compressor is reversed, that is, the compressor is in a reversed state. When the compressor is in reverse rotation, the temperature of the oil pool is higher than the temperature of the middle part of the compressor due to rapid temperature rise of the pump body, and when the compressor is not in reverse rotation, the temperature of the middle part of the compressor is highest under the action of the motor.
In this way, by firstly judging whether the differential pressure parameter is not smaller than the second set threshold value, the possibility that the compressor is reversed or the compressor is not started can be judged; and judging whether the temperature change parameter of the compressor is not greater than a first set threshold value or not, so that the condition that the compressor is not started can be eliminated, and the accuracy of judging that the compressor is in a reverse rotation state is higher when the pressure difference parameter is smaller than a second set threshold value and the temperature change parameter of the compressor is not greater than the first set threshold value.
Based on the technical scheme, when the air conditioner is in a starting state, if the top temperature change parameter of the compressor in a set time interval meets an abnormal operation condition, acquiring a pressure difference parameter of high and low pressure when the compressor operates to the highest set frequency, and acquiring a compressor temperature change parameter between the middle temperature of the compressor and the oil sump temperature of the compressor; when the pressure difference parameter is smaller than the second set threshold value and the temperature change parameter of the compressor is not larger than the first set threshold value, determining that the compressor is in a reverse rotation state and controlling the compressor to be in a stop state, so that the top temperature change parameter, the pressure difference parameter and the temperature change parameter of the compressor belong to the internal parameters of the air conditioner, the internal parameters of the air conditioner can be acquired in real time, and whether the compressor is in the reverse rotation state or not can be determined through judgment after the internal parameters of the air conditioner are acquired.
Based on the technical scheme, when the air conditioner is in a starting state, if the exhaust temperature change parameter of the compressor in a set time interval meets abnormal operation conditions, acquiring the pressure difference parameter of high and low pressure when the compressor operates to the highest set frequency, and acquiring the compressor temperature change parameter between the middle temperature of the compressor and the oil sump temperature of the compressor; when the pressure difference parameter is smaller than the second set threshold value and the temperature change parameter of the compressor is not larger than the first set threshold value, determining that the compressor is in a reverse rotation state and controlling the compressor to be in a stop state, so that the exhaust temperature change parameter, the pressure difference parameter and the temperature change parameter of the compressor belong to the internal parameters of the air conditioner, the exhaust temperature change parameter, the pressure difference parameter and the temperature change parameter of the compressor can be acquired in real time, and whether the compressor is in the reverse rotation state can be determined by judging after the internal parameters of the air conditioner are acquired.
In another embodiment of the present disclosure, if the pressure difference parameter is smaller than the second set threshold and the temperature variation parameter of the compressor is not greater than the first set threshold, the compressor is determined to be in a reverse rotation state, the compressor is controlled to be in a stop state, and alarm information is output, where the alarm information may be, for example, a ring tone or information such as "the air conditioner fails" or "the compressor is reversed" is transmitted to a user side through a wireless network and displayed, and the user side may be, for example, a smart phone, a tablet computer, a smart watch, and the like.
Referring to fig. 2, an overall step diagram of a method for detecting reverse rotation of an air conditioner compressor according to an embodiment of the present disclosure is provided. Firstly, executing the step A1, starting the air conditioner, namely starting the air conditioner; after performing step A1, a10, a11, a12, A3, A4, A5, A6, and A7 may be sequentially performed, or a20, a21, a22, A3, A4, A5, A6, and A7 may be sequentially performed; the present specification is not particularly limited.
Wherein, when steps a10, a11, a12, A3, A4, A5, A6 and A7 are sequentially executed, a10 is executed first, an initial compressor top temperature T1 is detected, and the operation is performed until a first time interval, at which time the compressor top temperature T2 is detected; next, step A11 is performed to calculate the compressor top temperature difference DeltaT 1 =t2-T1, wherein the compressor top temperature difference is a top temperature variation parameter; step A12 is executed again, and the delta T is judged 1 Whether the temperature is smaller than a first temperature preset threshold value; if not, executing A101, and judging that the compressor runs normally; if yes, executing step A3, running to the highest set frequency of the compressor, and detecting the high-low pressure T H 、T L Calculate the differential pressure Δp=t H -T L The method comprises the steps of carrying out a first treatment on the surface of the After the differential pressure is obtained, executing the step A4, and judging whether the differential pressure is smaller than a second set threshold C or not; if not, returning to execute A10, A11, A12 and A3; if yes, executing step A5, detecting middle temperature T M And oil pool temperature T C And calculates a compressor temperature variation parameter deltat 3 ＝T M -T C The method comprises the steps of carrying out a first treatment on the surface of the Then step A6 is executed to judge DeltaT 3 Whether or not it is not greater than a first set threshold D; if yes, executing the step A7, judging the reversion, stopping the compressor and outputting warning information; if not, executing the step A8, wherein the compressor is abnormal and in a stop state.
And, in sequentially executing a20, a21, a22, A3, A4, A5, A6 and A7, first executing a20, detecting an initial compressor discharge temperature T3, running to a second time interval, detecting a compressor discharge temperature T4 at that time; next, step A21 is performed to calculate the compressor discharge temperature difference DeltaT 2 =t4-T3, wherein the compressor discharge temperature difference is a discharge temperature variation parameter; step A22 is then executed to determine DeltaT 2 Whether the temperature is smaller than a second temperature preset threshold value; if not, executing A101, and judging that the compressor runs normally; if yes, executing step A3, running to the highest set frequency of the compressor, and detecting the high-low pressure T H 、T L Calculate the differential pressure Δp=t H -T L The method comprises the steps of carrying out a first treatment on the surface of the After the differential pressure is obtained, executing the step A4, and judging whether the differential pressure is smaller than a second set threshold C or not; if not, returning to execute A20, A21, A22 and A3; if yes, executing step A5, detecting middle temperature T M And the temperature of the oil pool is T C And calculates a compressor temperature variation parameter deltat 3 ＝T M -T C The method comprises the steps of carrying out a first treatment on the surface of the Then step A6 is executed to judge DeltaT 3 Whether or not it is not greater than a first set threshold D; if yes, executing the step A7, judging the reversion, stopping the compressor and outputting warning information; if not, executing the step A8, wherein the compressor is abnormal and in a stop state.
Based on the technical scheme, when the air conditioner is in a starting state, if the exhaust temperature change parameter of the compressor in a set time interval meets abnormal operation conditions, acquiring the pressure difference parameter of high and low pressure when the compressor operates to the highest set frequency, and acquiring the compressor temperature change parameter between the middle temperature of the compressor and the oil sump temperature of the compressor; when the pressure difference parameter is smaller than the second set threshold value and the temperature change parameter of the compressor is not larger than the first set threshold value, the compressor is determined to be in a reverse rotation state, and the compressor is controlled to be in a stop state, so that the exhaust temperature change parameter, the first pressure measurement parameter and the temperature change parameter of the compressor belong to the internal parameters of the air conditioner, the exhaust temperature change parameter, the first pressure measurement parameter and the temperature change parameter of the compressor can be obtained in real time, and whether the compressor is in the reverse rotation state can be determined by judging after the internal parameters of the air conditioner are obtained.
In addition, based on the technical scheme, the current running mode of the air conditioner can be quickly identified whether the compressor is in a reverse rotation state or not without distinguishing the current running mode of the air conditioner, and the application range of the compressor is wider.
With reference to fig. 3, referring to fig. 3, a method for detecting reverse rotation of an air conditioner compressor is provided, and a second aspect of the embodiment of the present application correspondingly provides a device for detecting reverse rotation of an air conditioner compressor, where the device includes:
the parameter detection module 301 is configured to obtain a compressor temperature variation parameter between a middle temperature of the compressor and an oil sump temperature of the compressor when the air conditioner is in a start state;
a condition judgment module 302, configured to judge whether the compressor temperature variation parameter meets a preset fault condition; and if the temperature change parameter of the compressor meets the preset fault condition, determining that the compressor is in a reverse rotation state. In an alternative embodiment, condition determination module 302 is configured to determine whether the compressor temperature variation parameter is not greater than a first set threshold.
In an alternative embodiment, the method further comprises:
the target temperature parameter acquisition unit is used for acquiring a target temperature variation parameter of the compressor in a set time interval when the air conditioner is in a starting state;
A condition judgment module 302, configured to judge whether the target temperature variation parameter meets a preset abnormal operation condition;
and the parameter detection module 301 is configured to obtain a compressor temperature variation parameter between a middle temperature of the compressor and an oil sump temperature of the compressor if the target temperature variation parameter meets the abnormal operation condition.
In an alternative embodiment, the target temperature parameter obtaining unit is configured to obtain a top target temperature variation parameter of the compressor in a first time interval, where the first set time is the set time interval, and the top temperature variation parameter is the target temperature variation parameter.
In an alternative embodiment, the target temperature parameter obtaining unit is configured to obtain a first top temperature of the compressor at a first time, and obtain a second top temperature of the compressor at a second time, where a time interval between the first time and the second time is the first time interval; and acquiring the top target temperature change parameter according to the first top temperature and the second top temperature.
In an alternative embodiment, the condition determining module 302 is configured to determine whether the top temperature variation parameter is smaller than a first temperature preset threshold, and obtain a first determination result; and judging whether the target temperature change parameter meets the abnormal operation condition according to the first judgment result.
In an alternative embodiment, the target temperature parameter obtaining unit is configured to obtain a discharge temperature variation parameter of the compressor in a second time interval, where the second set time is the set time interval, and the discharge temperature variation parameter is the target temperature variation parameter.
In an alternative embodiment, the target temperature parameter obtaining unit is configured to obtain a first discharge temperature of the compressor at a third time, and obtain a second discharge temperature of the compressor at a fourth time, where a time interval between the third time and the fourth time is the second time interval; and acquiring the top target temperature change parameter according to the first exhaust temperature and the second exhaust temperature.
In an optional embodiment, the condition determining module 302 is configured to determine whether the exhaust target temperature variation parameter is smaller than a second temperature preset threshold, and obtain a second determination result; and judging whether the target temperature change parameter meets the abnormal operation condition according to the second judgment result.
In an alternative embodiment, the method further comprises:
the pressure difference parameter acquisition unit is used for acquiring pressure difference parameters of high and low pressure when the compressor runs to the highest set frequency before acquiring the compressor temperature change parameter between the middle temperature of the compressor and the oil sump temperature of the compressor; and judging whether the pressure difference parameter is smaller than the second set threshold value.
In an alternative embodiment, the condition determining module 302 is configured to determine whether the compressor temperature variation parameter is not greater than a first set threshold if it is determined that the differential pressure parameter is less than the second set threshold;
and the compressor control module 303 is configured to determine that the compressor is in the reverse state and control the compressor to be in the shutdown state if the compressor temperature variation parameter is determined not to be greater than the first set threshold.
In an alternative embodiment, the method further comprises:
and the prompting module 304 is configured to output alarm information after determining that the temperature variation parameter of the compressor is not greater than the first set threshold.
In view of the foregoing embodiments, a third aspect of the present application also provides an air conditioner, which includes an air conditioner body, a memory and a compressor disposed in the air conditioner body, and one or more programs, where the one or more programs are stored in the memory, and are configured to execute, by one or more processors, operation instructions corresponding to the method for detecting reverse rotation of the air conditioner compressor, where the one or more programs include.
In view of the foregoing, a fourth aspect of the present application provides a computer-readable storage medium, where a computer program is stored, where the program is executed by a processor to implement steps corresponding to the foregoing method for detecting reverse rotation of an air conditioner compressor.
Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It is to be understood that the application is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the application is limited only by the appended claims
The foregoing description of the preferred embodiments of the application is not intended to limit the application to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the application are intended to be included within the scope of the application.
Claims (11)
1. A method for detecting reverse rotation of an air conditioner compressor, the method comprising:
acquiring a target temperature change parameter of the compressor in a set time interval when the air conditioner is in a starting state; the obtaining the target temperature change parameter of the compressor in the set time interval comprises the following steps:
acquiring a top target temperature change parameter of the compressor in a first time interval, wherein the first time interval is used as a set time interval, and the top target temperature change parameter is used as the target temperature change parameter;
judging whether the target temperature change parameter meets a preset abnormal operation condition or not; the judging whether the target temperature change parameter meets a preset abnormal operation condition comprises the following steps:
judging whether the top temperature change parameter is smaller than a first temperature preset threshold value or not, and acquiring a first judgment result;
judging whether the target temperature change parameter meets the abnormal operation condition according to the first judgment result;
if the target temperature change parameter meets the abnormal operation condition, acquiring a compressor temperature change parameter between the middle temperature of the compressor and the oil sump temperature of the compressor; the compressor temperature change parameter is the difference between the middle temperature of the compressor and the oil pool temperature of the compressor;
Judging whether the temperature change parameter of the compressor meets a preset fault condition or not; the judging whether the temperature change parameter of the compressor meets a preset fault condition comprises the following steps:
judging whether the temperature change parameter of the compressor is not more than a first set threshold value or not;
and if the temperature change parameter of the compressor meets the preset fault condition, determining that the compressor is in a reverse rotation state.
2. The method of claim 1, wherein said obtaining a top temperature variation parameter of said compressor over a first time interval comprises:
acquiring a first top temperature of the compressor at a first moment and acquiring a second top temperature of the compressor at a second moment, wherein a time interval between the first moment and the second moment is the first time interval;
and acquiring the top target temperature change parameter according to the first top temperature and the second top temperature.
3. The method of claim 1, wherein the obtaining a target temperature variation parameter of the compressor over a set time interval, or comprises:
and obtaining an exhaust gas temperature variation parameter of the compressor in a second time interval, wherein the second time interval is used as the set time interval, and the exhaust gas temperature variation parameter is used as the target temperature variation parameter.
4. The method of claim 3, wherein said obtaining a discharge temperature variation parameter of said compressor over a second time interval comprises: acquiring a first discharge temperature of the compressor at a third time and acquiring a second discharge temperature of the compressor at a fourth time, wherein a time interval between the third time and the fourth time is the second time interval;
and acquiring the top target temperature change parameter according to the first exhaust temperature and the second exhaust temperature.
5. The method of claim 4, wherein said determining whether said target temperature change parameter meets a preset abnormal operating condition comprises:
judging whether the target temperature change parameter is smaller than a second temperature preset threshold value or not, and acquiring a second judgment result; and judging whether the target temperature change parameter meets the abnormal operation condition according to the second judgment result.
6. The method of any one of claims 1-5, wherein prior to obtaining a compressor temperature variation parameter between a mid-section temperature of the compressor and an oil sump temperature of the compressor, the method further comprises:
Acquiring a pressure difference parameter of high and low pressure when the compressor runs to the highest set frequency; judging
Whether the pressure difference parameter is less than a second set threshold.
7. The method of claim 5, wherein said determining that said compressor is in a reverse state comprises:
if the differential pressure parameter is smaller than the second set threshold value, judging whether the temperature change parameter of the compressor is not larger than the first set threshold value or not;
and if the temperature change parameter of the compressor is not larger than the first set threshold value, determining that the compressor is in the reverse rotation state.
8. The method of any one of claims 1-5, wherein after determining that the compressor temperature variation parameter is not greater than the first set threshold, the method further comprises:
and controlling the compressor to be in a stop state and/or outputting alarm information.
9. An apparatus for detecting reverse rotation of an air conditioner compressor, comprising:
the target temperature parameter acquisition unit is used for acquiring a target temperature variation parameter of the compressor in a set time interval when the air conditioner is in a starting state;
the target temperature parameter obtaining unit is further used for obtaining a top target temperature change parameter of the compressor in a first time interval, wherein the first time interval is used as the set time interval, and the top target temperature change parameter is used as the target temperature change parameter;
The condition judging module judges whether the top temperature change parameter is smaller than a first temperature preset threshold value or not, and a first judging result is obtained; judging whether the target temperature change parameter meets the abnormal operation condition according to the first judgment result;
the parameter detection module is used for acquiring a compressor temperature change parameter between the middle temperature of the compressor and the oil sump temperature of the compressor if the target temperature change parameter meets the abnormal operation condition; the compressor temperature change parameter is the difference between the middle temperature of the compressor and the oil pool temperature of the compressor;
the condition judging module is configured to judge whether the temperature variation parameter of the compressor meets a preset fault condition, where the preset fault condition includes: judging whether the temperature change parameter of the compressor is not more than a first set threshold value or not; and if the temperature change parameter of the compressor meets the preset fault condition, determining that the compressor is in a reverse rotation state.
10. An air conditioner comprising an air conditioner body, a memory and a compressor provided in the air conditioner body, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by one or more processors, the one or more programs comprising steps for performing the method according to any one of claims 1-7.
11. A computer readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, carries out the corresponding steps of the method according to any one of claims 1-7.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279150A (en) * | 2013-07-10 | 2015-01-14 | 珠海格力电器股份有限公司 | Air conditioner compressor reversal detection method and device |
| CN105202712A (en) * | 2015-10-26 | 2015-12-30 | 珠海格力电器股份有限公司 | Method and device for detecting working state of compressor |
| CN109340096A (en) * | 2018-10-25 | 2019-02-15 | 科希曼电器有限公司 | A kind of compressor fault monitoring method and its monitoring device |
| CN111043707A (en) * | 2019-12-31 | 2020-04-21 | 海信（山东）空调有限公司 | Compressor reverse rotation detection method and air conditioner |
| CN112146230A (en) * | 2020-08-24 | 2020-12-29 | 宁波奥克斯电气股份有限公司 | Compressor protection control method and device and air conditioner |
-
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- 2021-09-18 CN CN202111111085.7A patent/CN113776174B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279150A (en) * | 2013-07-10 | 2015-01-14 | 珠海格力电器股份有限公司 | Air conditioner compressor reversal detection method and device |
| CN105202712A (en) * | 2015-10-26 | 2015-12-30 | 珠海格力电器股份有限公司 | Method and device for detecting working state of compressor |
| CN109340096A (en) * | 2018-10-25 | 2019-02-15 | 科希曼电器有限公司 | A kind of compressor fault monitoring method and its monitoring device |
| CN111043707A (en) * | 2019-12-31 | 2020-04-21 | 海信（山东）空调有限公司 | Compressor reverse rotation detection method and air conditioner |
| CN112146230A (en) * | 2020-08-24 | 2020-12-29 | 宁波奥克斯电气股份有限公司 | Compressor protection control method and device and air conditioner |
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