CN109442674B - Air conditioner compressor protection method, equipment, device, storage medium and air conditioner - Google Patents
Air conditioner compressor protection method, equipment, device, storage medium and air conditioner Download PDFInfo
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- CN109442674B CN109442674B CN201811305255.3A CN201811305255A CN109442674B CN 109442674 B CN109442674 B CN 109442674B CN 201811305255 A CN201811305255 A CN 201811305255A CN 109442674 B CN109442674 B CN 109442674B
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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
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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
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
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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
- F24F11/56—Remote control
- F24F11/58—Remote control using Internet communication
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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
- F24F11/62—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
- F24F11/70—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
- 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
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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
- F24F2140/50—Load
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Abstract
The invention provides a method, equipment, a device, a storage medium and an air conditioner for protecting an air conditioner compressor, wherein the method comprises the steps of calculating the current indoor environment temperature and the current air conditioner inner pipe temperature to obtain a temperature difference value, judging whether the air conditioner compressor is subjected to overload protection or not according to the duration of the temperature difference value being less than or equal to a first temperature threshold value, and controlling the air conditioner compressor to be powered off when the current shutdown frequency is overlarge, so that the air conditioner compressor can be prevented from being damaged due to frequent overload protection. And because the current or voltage of the air conditioner compressor is not required to be detected when the air conditioner compressor is judged to be subjected to overload protection, the air conditioner can be prevented from being provided with a current transformer or a pressure switch, the cost of the air conditioner is saved, the production process of the air conditioner is simplified, and the production efficiency of the air conditioner is improved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a method, equipment and a device for protecting an air conditioner compressor, a storage medium and an air conditioner.
Background
The air conditioner compressor is a core component for realizing functions of the air conditioner, and in order to avoid damage of the air conditioner compressor due to overload, the air conditioner compressor is usually provided with an overload protector. When the air conditioner compressor runs in overload, the overload protector carried by the air conditioner compressor can carry out overload protection. The air conditioner compressor is frequently subjected to overload protection, so that the air conditioner compressor is easily damaged, and whether the overload protection of the air conditioner compressor is generated or not is difficult to be directly detected by a controller of the air conditioner. This enables overload protection to be detected, thereby preventing the air conditioner compressor from being frequently overload-protected.
However, the provision of both the current transformer and the pressure switch increases the cost of the air conditioner and also complicates the production process of the air conditioner. In addition, when the air conditioner compressor is overload-protected, the controller of the air conditioner of the fixed-frequency air conditioner and other types cannot receive the information that the air conditioner compressor is overload-protected, so that the air conditioner compressor is easily overload-protected frequently, and the air conditioner compressor is easily damaged.
Disclosure of Invention
The invention mainly aims to provide a method, equipment, a device, a storage medium and an air conditioner for protecting an air conditioner compressor, aiming at avoiding frequent overload protection of the air conditioner compressor on the premise of not arranging a current transformer or a pressure switch.
In order to achieve the above object, the present invention provides a method for protecting an air conditioner compressor, comprising the following steps:
acquiring the current indoor environment temperature and the current air conditioner inner pipe temperature;
calculating a temperature difference value between the current indoor environment temperature and the current air conditioner inner pipe temperature;
counting the duration of the temperature difference value which is less than or equal to the first temperature threshold value, and taking the counted duration as the low-efficacy duration;
when the low-efficacy duration is greater than or equal to the low-efficacy duration threshold value, self-increasing the stored current shutdown times;
and when the current shutdown frequency is more than or equal to the shutdown frequency threshold value, controlling the air conditioner compressor to be powered off so as to protect the air conditioner compressor.
Preferably, after the self-increasing of the stored current shutdown number is performed when the low-efficacy duration is greater than or equal to the low-efficacy duration threshold, the method for protecting the air conditioner compressor further includes:
and when the current shutdown times are smaller than the shutdown time threshold value, waiting for a first preset time length, and returning to the step of acquiring the current indoor environment temperature and the current air conditioner inner pipe temperature after waiting for the first preset time length.
Preferably, before calculating the temperature difference between the current indoor environment temperature and the current air conditioner inner pipe temperature, the air conditioner compressor protection method further includes:
setting the air conditioner compressor to be in a powered state, counting the duration of the air conditioner compressor in the powered state, and taking the counted duration as the powered duration of the compressor;
the calculating of the temperature difference between the current indoor environment temperature and the current air conditioner inner pipe temperature specifically includes:
and when the power supply time length of the compressor is more than or equal to a power supply time length threshold value, calculating a temperature difference value between the current indoor environment temperature and the current air conditioner inner pipe temperature.
Preferably, before counting the duration of the temperature difference value being less than or equal to the first temperature threshold and taking the counted duration as the low power efficiency duration, the method for protecting the air conditioner compressor further includes:
setting an air conditioner compressor to be in a powered state, and taking the temperature difference value calculated at each moment in a preset powered time period as a historical temperature difference value;
searching the maximum value and the minimum value in the historical temperature difference value, taking the searched maximum value as the maximum temperature difference value, and taking the searched minimum value as the minimum temperature difference value;
calculating a difference value between the maximum temperature difference value and the maximum temperature difference value, and taking the calculated difference value as a temperature difference amplitude value;
the counting of the duration of the temperature difference value smaller than or equal to the first temperature threshold value and taking the counted duration as the low efficacy duration specifically include:
and when the temperature difference amplitude is larger than or equal to a second temperature threshold value, counting the duration of the temperature difference value smaller than or equal to the first temperature threshold value, and taking the counted duration as the low-efficacy duration.
Preferably, after calculating a difference between the maximum temperature difference and taking the calculated difference as a temperature difference amplitude, the method for protecting an air conditioner compressor further includes:
and when the temperature difference amplitude is smaller than a second temperature threshold value, waiting for a second preset time length, and returning to the step of acquiring the current indoor environment temperature and the current air conditioner inner pipe temperature after waiting for the second preset time length.
Preferably, after calculating the temperature difference between the current indoor environment temperature and the current air conditioner inner pipe temperature, the air conditioner compressor protection method further includes:
counting the duration of the temperature difference value larger than the first temperature threshold value, and taking the counted duration as the normal working duration;
and when the normal working time length is more than or equal to the normal working time length threshold value, clearing the stored current shutdown times, waiting for a third preset time length, and returning to the step of acquiring the current indoor environment temperature and the current air conditioner inner pipe temperature after waiting for the third preset time length.
In addition, in order to achieve the above object, the present invention further provides an air conditioner compressor protection device, which includes a memory, a processor, and an air conditioner compressor protection program stored in the memory and operable on the processor, wherein the air conditioner compressor protection program, when executed by the processor, implements the steps of the air conditioner compressor protection method as described above.
In addition, in order to achieve the above object, the present invention also provides an air conditioner including the air conditioner compressor protection device as described above.
In addition, in order to achieve the above object, the present invention further provides a protection device for an air conditioner compressor, comprising:
the acquisition module is used for acquiring the current indoor environment temperature and the current air conditioner inner pipe temperature;
the calculation module is used for calculating the temperature difference between the current indoor environment temperature and the current air conditioner inner pipe temperature;
the counting module is used for counting the duration of the temperature difference value which is less than or equal to the first temperature threshold value, and taking the counted duration as the low-efficacy duration;
the counting module is used for automatically increasing the stored current shutdown times when the low-efficacy duration is greater than or equal to the low-efficacy duration threshold value;
and the power-off module is used for controlling the power-off of the air-conditioning compressor when the current shutdown frequency is more than or equal to the shutdown frequency threshold value so as to protect the air-conditioning compressor.
Further, to achieve the above object, a computer readable storage medium having stored thereon an air conditioner compressor protection program, when executed by a processor, implements the steps of the air conditioner compressor protection method as described above.
According to the technical scheme provided by the invention, the temperature difference value is obtained by calculating the current indoor environment temperature and the current air conditioner inner pipe temperature, whether the air conditioner compressor is subjected to overload protection is judged according to the duration time when the temperature difference value is less than or equal to the first temperature threshold value, and the air conditioner compressor is controlled to be powered off when the current shutdown frequency is overlarge, so that the air conditioner compressor can be prevented from being damaged due to frequent overload protection. And because the current or voltage of the air conditioner compressor is not required to be detected when the air conditioner compressor is judged to be subjected to overload protection, the air conditioner can be prevented from being provided with a current transformer or a pressure switch, the cost of the air conditioner is saved, the production process of the air conditioner is simplified, and the production efficiency of the air conditioner is improved.
Drawings
FIG. 1 is a schematic diagram of an air conditioner compressor protection device in a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a first embodiment of a method for protecting an air conditioner compressor according to the present invention;
FIG. 3 is a schematic flow chart illustrating a second embodiment of the method for protecting an air conditioner compressor according to the present invention;
FIG. 4 is a schematic flow chart illustrating a third embodiment of a method for protecting an air conditioner compressor according to the present invention;
FIG. 5 is a schematic flow chart illustrating a fourth embodiment of a method for protecting an air conditioner compressor according to the present invention;
FIG. 6 is a schematic flow chart of a fifth embodiment of the protection method for the air conditioner compressor according to the present invention;
fig. 7 is a schematic flow chart of a sixth embodiment of the protection method for the air conditioner compressor according to the present invention;
fig. 8 is a schematic flow chart of the protection device for the air conditioner compressor according to the first embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an air conditioner compressor protection device in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the air conditioner compressor protecting apparatus may include: a processor 1001, such as a CPU, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display (Display), an input unit such as a key, and may further include a remote controller, and the optional user interface 1003 may further include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
It will be appreciated by those skilled in the art that the configuration shown in fig. 1 does not constitute a limitation of the air conditioner compressor protection device and may include more or fewer components than those shown, or some components in combination, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a kind of computer storage medium, may include therein an operating system, a network communication module, a user interface module, and a program recommendation program based on user behavior.
In the smart television shown in fig. 1, the network interface 1004 is mainly used for data interaction with an external network; the user interface 1003 is mainly used for receiving input instructions of a user; the smart television calls an air conditioner compressor protection program stored in the memory 1005 through the processor 1001, and performs the following operations:
acquiring the current indoor environment temperature and the current air conditioner inner pipe temperature;
calculating a temperature difference value between the current indoor environment temperature and the current air conditioner inner pipe temperature;
counting the duration of the temperature difference value which is less than or equal to the first temperature threshold value, and taking the counted duration as the low-efficacy duration;
when the low-efficacy duration is greater than or equal to the low-efficacy duration threshold value, self-increasing the stored current shutdown times;
and when the current shutdown frequency is more than or equal to the shutdown frequency threshold value, controlling the air conditioner compressor to be powered off so as to protect the air conditioner compressor.
Further, the processor 1001 may call the air conditioner compressor protection program stored in the memory 1005, and after the stored current shutdown number is self-increased when the low power efficiency duration is greater than or equal to the low power efficiency duration threshold, perform the following operations:
and when the current shutdown times are smaller than the shutdown time threshold value, waiting for a first preset time length, and returning to the step of acquiring the current indoor environment temperature and the current air conditioner inner pipe temperature after waiting for the first preset time length.
Further, the processor 1001 may call the air conditioner compressor protection program stored in the memory 1005, and further perform the following operations before calculating the temperature difference between the current indoor environment temperature and the current air conditioner internal pipe temperature:
setting the air conditioner compressor to be in a powered state, counting the duration of the air conditioner compressor in the powered state, and taking the counted duration as the powered duration of the compressor;
the calculating of the temperature difference between the current indoor environment temperature and the current air conditioner inner pipe temperature specifically includes:
and when the power supply time length of the compressor is more than or equal to a power supply time length threshold value, calculating a temperature difference value between the current indoor environment temperature and the current air conditioner inner pipe temperature.
Further, the processor 1001 may call the air conditioner compressor protection program stored in the memory 1005, count the duration of the temperature difference value being less than or equal to the first temperature threshold, and perform the following operations before taking the counted duration as the low power efficiency duration:
setting an air conditioner compressor to be in a powered state, and taking the temperature difference value calculated at each moment in a preset powered time period as a historical temperature difference value;
searching the maximum value and the minimum value in the historical temperature difference value, taking the searched maximum value as the maximum temperature difference value, and taking the searched minimum value as the minimum temperature difference value;
calculating a difference value between the maximum temperature difference value and the maximum temperature difference value, and taking the calculated difference value as a temperature difference amplitude value;
the counting of the duration of the temperature difference value smaller than or equal to the first temperature threshold value and taking the counted duration as the low efficacy duration specifically include:
and when the temperature difference amplitude is larger than or equal to a second temperature threshold value, counting the duration of the temperature difference value smaller than or equal to the first temperature threshold value, and taking the counted duration as the low-efficacy duration.
Further, the processor 1001 may call an air conditioner compressor protection program stored in the memory 1005, calculate a difference value between the maximum temperature difference value and the maximum temperature difference value, and after taking the calculated difference value as a temperature difference amplitude, perform the following operations:
and when the temperature difference amplitude is smaller than a second temperature threshold value, waiting for a second preset time length, and returning to the step of acquiring the current indoor environment temperature and the current air conditioner inner pipe temperature after waiting for the second preset time length.
Further, the processor 1001 may call an air conditioner compressor protection program stored in the memory 1005, and after calculating a temperature difference between the current indoor environment temperature and the current air conditioner inner pipe temperature, perform the following operations:
counting the duration of the temperature difference value larger than the first temperature threshold value, and taking the counted duration as the normal working duration;
and when the normal working time length is more than or equal to the normal working time length threshold value, clearing the stored current shutdown times, waiting for a third preset time length, and returning to the step of acquiring the current indoor environment temperature and the current air conditioner inner pipe temperature after waiting for the third preset time length.
In this embodiment, a temperature difference is calculated from the current indoor environment temperature and the current air conditioner inner tube temperature, whether the air conditioner compressor is subjected to overload protection is judged according to the duration of the temperature difference being less than or equal to the first temperature threshold, and the air conditioner compressor is controlled to be powered off when the current shutdown frequency is too large, so that the air conditioner compressor can be prevented from being damaged due to frequent overload protection. And because the current or voltage of the air conditioner compressor is not required to be detected when the air conditioner compressor is judged to be subjected to overload protection, the air conditioner can be prevented from being provided with a current transformer or a pressure switch, the cost of the air conditioner is saved, the production process of the air conditioner is simplified, and the production efficiency of the air conditioner is improved.
Based on the hardware structure, the embodiment of the protection method of the air conditioner compressor is provided.
Referring to fig. 2, fig. 2 is a schematic flow chart of a first embodiment of a protection method for an air conditioner compressor according to the present invention.
In a first embodiment, the air conditioner compressor protection method includes the steps of:
s100: acquiring the current indoor environment temperature and the current air conditioner inner pipe temperature;
it should be noted that the current indoor environment temperature refers to a temperature of an indoor environment at the current moment, and the current environment temperature may be specifically measured by a temperature measurement sensor installed outside the air conditioner or at a return air inlet of the air conditioner or the like. The current air conditioner inner pipe temperature refers to the temperature of the air conditioner inner pipe at the current moment, and can be measured through a temperature measuring sensor arranged at the air conditioner inner pipe. According to different specific structures of the air conditioner, the air conditioner inner pipe can be an indoor coil pipe of the air conditioner.
S200: calculating a temperature difference value between the current indoor environment temperature and the current air conditioner inner pipe temperature;
it should be noted that, the air conditioner compressor protection method of this embodiment is executed in a cooling mode of an air conditioner, and the temperature difference in this step should be obtained by subtracting the current air conditioner inner tube temperature from the current indoor environment temperature.
It can be understood that, in the cooling mode of the air conditioner, the current indoor ambient temperature is usually greater than or equal to the current air conditioner inner pipe temperature, so the temperature difference is usually greater than or equal to 0. When the air conditioner compressor is not started and is not started before, or when the air conditioner compressor is subjected to overload protection, the current indoor environment temperature is generally basically equal to the current temperature of the air conditioner inner pipe, and the temperature difference is generally close to zero. And when a cooling effect can be generated by the operation of the air conditioner compressor, the current indoor ambient temperature should be greater than the current air conditioner inner tube temperature.
S300: counting the duration of the temperature difference value which is less than or equal to the first temperature threshold value, and taking the counted duration as the low-efficacy duration;
it should be noted that the first temperature threshold is a preset threshold, and the first temperature threshold may be a fixed value that cannot be modified, or may be a value that can be modified. In a specific implementation, the air conditioner may have a plurality of different cooling modes, and the first temperature threshold may be determined according to a current mode of the air conditioner. The low-efficacy time period refers to the whole duration time period from the time when the temperature difference value is less than or equal to the first temperature threshold value to the current time when the temperature difference value is less than or equal to the first temperature threshold value.
S400: when the low-efficacy duration is greater than or equal to the low-efficacy duration threshold value, self-increasing the stored current shutdown times;
it can be understood that the refrigeration effect is not obvious according to the temperature difference value being less than or equal to the first temperature threshold value, so that the overload protection of the air conditioner compressor can be judged, and the stored current shutdown times are automatically increased. Compared with the technical scheme that the overload protection of the air conditioner compressor is directly judged as long as the temperature difference value is smaller than or equal to the first temperature threshold value, in the embodiment, whether the overload protection of the air conditioner compressor occurs or not is judged according to the low-efficiency duration, and the overload protection is not easily judged in error. This is because the temperature difference is less than or equal to the first temperature threshold, which may be a temporary phenomenon caused by a temporary instability of the power supply of the air conditioner, and the overload protection of the air conditioner compressor does not occur.
It should be noted that the low efficacy time length threshold is a preset threshold, and the low efficacy time length threshold may be a fixed value that cannot be modified, or may be a value that can be modified. Since the execution main body of this embodiment is the air conditioner compressor protection device, the current shutdown number is stored in the air conditioner compressor protection device. The current number of stops may be incremented by a self-increment routine, and the amount of each self-increment may be 1, such as from 5 to 6, or may be different from 1, such as from 5 to 7.
S500: and when the current shutdown frequency is more than or equal to the shutdown frequency threshold value, controlling the air conditioner compressor to be powered off so as to protect the air conditioner compressor.
It can be understood that frequent overload protection of the air conditioner compressor can be judged according to the fact that the current shutdown time is larger than or equal to the shutdown time threshold, and at the moment, the air conditioner compressor can be protected by controlling the power-off of the air conditioner compressor.
It should be noted that the shutdown time threshold is a preset threshold, and the shutdown time threshold may be a fixed value that cannot be modified, or may be a value that can be modified. The specific way of controlling the power failure of the air conditioner compressor is not limited, and specifically, a control switch can be arranged on a power supply circuit of the air conditioner compressor, and the control switch is electrically connected with the air conditioner compressor protection device, so that the air conditioner compressor protection device can power off the air conditioner compressor through the control switch.
In specific implementation, in the step, the failure can be reported while the air conditioner compressor is controlled to be powered off, so that a user or a maintenance worker of the air conditioner can timely process the failure. In order to avoid that the normal use of a user is influenced by the excessive protection of the air conditioner compressor, the stored current shutdown times can be cleared under the condition that a certain condition is met so as to avoid the excessive protection of the air conditioner compressor, for example, the current shutdown times can be automatically cleared at intervals, or automatically cleared after the power failure of the whole air conditioner.
In this embodiment, a temperature difference is calculated from the current indoor environment temperature and the current air conditioner inner tube temperature, whether the air conditioner compressor is subjected to overload protection is judged according to the duration of the temperature difference being less than or equal to the first temperature threshold, and the air conditioner compressor is controlled to be powered off when the current shutdown frequency is too large, so that the air conditioner compressor can be prevented from being damaged due to frequent overload protection. And because the current or voltage of the air conditioner compressor is not required to be detected when the air conditioner compressor is judged to be subjected to overload protection, the air conditioner can be prevented from being provided with a current transformer or a pressure switch, the cost of the air conditioner is saved, the production process of the air conditioner is simplified, and the production efficiency of the air conditioner is improved.
Further, as shown in fig. 3, a second embodiment of the method for protecting an air conditioner compressor according to the present invention is proposed based on the first embodiment, and in this embodiment, after step S400, the method specifically includes:
s600: and when the current shutdown times are smaller than the shutdown time threshold value, waiting for a first preset time length, and returning to the step of acquiring the current indoor environment temperature and the current air conditioner inner pipe temperature after waiting for the first preset time length.
It should be noted that, in this step, the first preset time period may be zero, that is, the step of obtaining the current indoor environment temperature and the current air conditioner inner tube temperature is directly returned without waiting. The first preset time period is set to a value greater than zero, which can reduce the burden on the air conditioner compressor protection method.
In this embodiment, the step of obtaining the current indoor environment temperature and the current air conditioner inner tube temperature is returned, so that the air conditioner compressor protection method can be continuously executed, and the air conditioner compressor can be continuously protected.
Further, as shown in fig. 4, a third embodiment of the method for protecting an air conditioner compressor according to the present invention is proposed based on the first embodiment, and in this embodiment, before step S200, the method specifically includes:
s110: setting the air conditioner compressor to be in a powered state, counting the duration of the air conditioner compressor in the powered state, and taking the counted duration as the powered duration of the compressor;
it should be noted that when the air conditioner compressor is in the powered state, the current does not necessarily pass through the air conditioner compressor, and the overload protector of the air conditioner compressor is in the "trip" state, which may result in the current not passing through the air conditioner compressor. The air condition compressor sets up to be supplied with power state, and just when overload protection ware is not in "trip" state, air condition compressor just can have the electric current to pass through. The powered-on duration of the compressor refers to the whole duration of the powered-on state of the air conditioner compressor, namely, the duration of the whole duration from the starting time when the air conditioner compressor is set to the powered-on state to the current time when the air conditioner compressor is in the powered-on state. In the step, only the air conditioner compressor is required to be in a powered state, and whether current actually passes through the air conditioner compressor is not required to be detected, so that a current transformer is not required to be arranged.
Step S200 specifically includes:
s201: and when the power supply time length of the compressor is more than or equal to a power supply time length threshold value, calculating a temperature difference value between the current indoor environment temperature and the current air conditioner inner pipe temperature.
It should be noted that the power-supplied time period threshold is a preset threshold, and the power-supplied time period threshold may be a fixed value that cannot be modified, or may be a value that can be modified.
It can be understood that, when the air conditioner compressor is just started, the current indoor environment temperature and the current air conditioner inner pipe temperature may be very close to each other, and thus it is easy to misjudge that the overload protection occurs to the air conditioner compressor. After the air conditioner compressor is started for a period of time, the temperature difference value is gradually increased.
In this embodiment, through setting up the length of time more than or equal to length of time threshold is supplied with power to the compressor, as the calculation current indoor ambient temperature with the condition of the temperature difference between the current air conditioner inner tube temperature can prevent at air condition compressor start-up in-process, by current indoor ambient temperature with current air conditioner inner tube temperature is very close, and misjudgement has taken place overload protection for air condition compressor to improve the judgement accuracy whether overload protection has taken place to air condition compressor.
Further, in this embodiment, step S110 may include, after: when the power-supplied time length of the compressor is greater than or equal to the power-supplied time length threshold value, returning to the step of acquiring the current indoor environment temperature and the current air conditioner inner pipe temperature, or after the step S110, may include: and continuously counting the power supply time of the compressor.
Further, as shown in fig. 5, a fourth embodiment of the method for protecting an air conditioner compressor according to the present invention is proposed based on the first embodiment, and in this embodiment, before step S300, the method specifically includes:
s210: setting an air conditioner compressor to be in a powered state, and taking the temperature difference value calculated at each moment in a preset powered time period as a historical temperature difference value;
it should be noted that the preset powered time period is a time period from when the air conditioner compressor is continuously in the powered state to when the air conditioner compressor is powered, which refers to a whole time period from when the air conditioner compressor is powered, that is, a starting time for setting the air conditioner compressor in the powered state to when the air conditioner compressor is powered. The temperature difference may be continuously calculated during the preset powered time period, so as to obtain a time-varying curve of the temperature difference. The temperature difference may also be calculated intermittently, and in particular implementations, the temperature difference may be calculated every few milliseconds. In the step, only the air conditioner compressor is required to be in a powered state, and whether current actually passes through the air conditioner compressor is not required to be detected, so that a current transformer is not required to be arranged.
S220: searching the maximum value and the minimum value in the historical temperature difference value, taking the searched maximum value as the maximum temperature difference value, and taking the searched minimum value as the minimum temperature difference value;
for example, the historical temperature differences may include 2 degrees celsius, 3 degrees celsius, 7 degrees celsius, and 15 degrees celsius, then the maximum temperature difference is 15 degrees celsius and the minimum temperature difference is 2 degrees celsius.
S230: calculating a difference value between the maximum temperature difference value and the maximum temperature difference value, and taking the calculated difference value as a temperature difference amplitude value;
for example, if the maximum temperature difference is 15 degrees celsius and the minimum temperature difference is 2 degrees celsius, then the magnitude of the temperature difference is 13 degrees celsius.
Step S300 specifically includes:
s301: and when the temperature difference amplitude is larger than or equal to a second temperature threshold value, counting the duration of the temperature difference value smaller than or equal to the first temperature threshold value, and taking the counted duration as the low-efficacy duration.
It should be noted that the second temperature threshold is a preset threshold, and the second temperature threshold may be a fixed value that cannot be modified, or may be a value that can be modified. In a specific implementation, the air conditioner may have a plurality of different cooling modes, and the second temperature threshold may be determined according to a current mode of the air conditioner. The low-efficiency duration in this step should be counted after the time when the temperature difference amplitude is greater than or equal to the second temperature threshold, that is, the duration from the start time when the temperature difference amplitude is greater than or equal to the second temperature threshold to the current time when the temperature difference value is less than or equal to the first temperature threshold is detected.
It can be understood that the air conditioner compressor may be started before the air conditioner compressor is powered by the air conditioner compressor protection device, so that at the moment when the air conditioner compressor is powered by the air conditioner compressor protection device, the air conditioner inner pipe has a residual low temperature, the current air conditioner inner pipe has a lower temperature, and the temperature difference is larger. Shortly after the air conditioner compressor is set to be in a powered state, even if overload protection happens to the air conditioner compressor, the overload protection is not judged to happen to the air conditioner compressor due to the fact that the temperature difference value is large.
And the great temperature difference amplitude can indicate that the air conditioner compressor has been started, or the air conditioner inner tube no longer has surplus low temperature, and at this moment, the statistics is started to be carried out on the duration of the temperature difference value less than or equal to the first temperature threshold value, and the duration of the statistics is taken as the low efficacy duration, so that the influence of the surplus low temperature of the air conditioner inner tube can be eliminated.
In this embodiment, when the temperature difference amplitude is greater than or equal to the second temperature threshold, the statistics is carried out on the duration of the temperature difference value less than or equal to the duration of the first temperature threshold, and the duration of the statistics is taken as the duration of the low efficiency, so that the influence of the residual low temperature of the inner pipe of the air conditioner on the judgment of whether the overload protection occurs to the air conditioner compressor can be eliminated, and the judgment accuracy of whether the overload protection occurs to the air conditioner compressor is improved.
Further, as shown in fig. 6, a fifth embodiment of the method for protecting an air conditioner compressor according to the present invention is proposed based on the fourth embodiment, and in this embodiment, after step S230, the method specifically includes:
s240: and when the temperature difference amplitude is smaller than a second temperature threshold value, waiting for a second preset time length, and returning to the step of acquiring the current indoor environment temperature and the current air conditioner inner pipe temperature after waiting for the second preset time length.
It should be noted that, in this step, the second preset time period may be zero, that is, the step of obtaining the current indoor environment temperature and the current air conditioner inner tube temperature is directly returned without waiting. The second preset time period is set to a value greater than zero, which can reduce the burden on the air conditioner compressor protection method.
In this embodiment, the step of obtaining the current indoor environment temperature and the current air conditioner inner tube temperature is returned, so that the air conditioner compressor protection method can be continuously executed, and the air conditioner compressor can be continuously protected.
Further, as shown in fig. 7, a sixth embodiment of the method for protecting an air conditioner compressor according to the present invention is proposed based on the first embodiment, and in this embodiment, after step S230, the method specifically includes:
s250: counting the duration of the temperature difference value larger than the first temperature threshold value, and taking the counted duration as the normal working duration;
it should be noted that the first temperature threshold is a preset threshold, and the first temperature threshold may be a fixed value that cannot be modified, or may be a value that can be modified. In a specific implementation, the air conditioner may have a plurality of different cooling modes, and the first temperature threshold may be determined according to a current mode of the air conditioner. The low-efficiency time duration refers to the whole duration time that the temperature difference value is greater than the first temperature threshold value, namely the time duration from the starting moment that the temperature difference value is greater than the first temperature threshold value to the whole duration time duration of the current moment that the temperature difference value is greater than the first temperature threshold value.
S260: and when the normal working time length is more than or equal to the normal working time length threshold value, clearing the stored current shutdown times, waiting for a third preset time length, and returning to the step of acquiring the current indoor environment temperature and the current air conditioner inner pipe temperature after waiting for the third preset time length.
It should be noted that the normal operating time period threshold is a preset threshold, and the normal operating time period threshold may be a fixed value that cannot be modified, or may be a value that can be modified. The normal working time length threshold value is a preset threshold value, and the normal working time length threshold value can be a fixed value which cannot be modified or a value which can be modified. In a specific implementation, the air conditioner may have a plurality of different cooling modes, and the normal operating time threshold may be determined according to a current mode of the air conditioner.
It can be understood that the air conditioner compressor can be judged to have no fault according to the longer normal working time, even if the overload protection condition of the air conditioner compressor occurs due to the reasons such as unstable voltage and the like, the possibility that the overload protection of the subsequent air conditioner compressor frequently occurs is very low.
Therefore, in this embodiment, when the normal operating time is greater than or equal to the normal operating time threshold, the current shutdown time is cleared, so that the air conditioner compressor is prevented from being excessively protected and affecting the normal use of a user.
In addition, as shown in fig. 8, the present invention also provides a protection device for an air conditioner compressor, comprising:
the acquiring module 100 is used for acquiring the current indoor environment temperature and the current air conditioner inner pipe temperature;
a calculating module 200, configured to calculate a temperature difference between the current indoor environment temperature and the current air conditioner inner tube temperature;
the counting module 300 is configured to count a duration of the temperature difference value being less than or equal to the first temperature threshold, and use the counted duration as a low-efficacy duration;
the counting module 400 is used for automatically increasing the stored current shutdown times when the low-efficacy duration is greater than or equal to a low-efficacy duration threshold value;
and the power-off module 500 is used for controlling the power-off of the air conditioner compressor when the current shutdown frequency is more than or equal to the shutdown frequency threshold value so as to protect the air conditioner compressor.
It can be understood that the air conditioner compressor protection device of the present embodiment may be application software for protecting an air conditioner compressor, and is loaded in the server.
Furthermore, an embodiment of the present invention further provides a computer-readable storage medium, where an air conditioner compressor protection program is stored on the computer-readable storage medium, and when executed by a processor, the air conditioner compressor protection program implements the following operations:
acquiring the current indoor environment temperature and the current air conditioner inner pipe temperature;
calculating a temperature difference value between the current indoor environment temperature and the current air conditioner inner pipe temperature;
counting the duration of the temperature difference value which is less than or equal to the first temperature threshold value, and taking the counted duration as the low-efficacy duration;
when the low-efficacy duration is greater than or equal to the low-efficacy duration threshold value, self-increasing the stored current shutdown times;
and when the current shutdown frequency is more than or equal to the shutdown frequency threshold value, controlling the air conditioner compressor to be powered off so as to protect the air conditioner compressor.
Further, the air conditioner compressor protection program when executed by the processor further implements the following operations:
and when the current shutdown times are smaller than the shutdown time threshold value, waiting for a first preset time length, and returning to the step of acquiring the current indoor environment temperature and the current air conditioner inner pipe temperature after waiting for the first preset time length.
Further, the air conditioner compressor protection program when executed by the processor further implements the following operations:
setting the air conditioner compressor to be in a powered state, counting the duration of the air conditioner compressor in the powered state, and taking the counted duration as the powered duration of the compressor;
the calculating of the temperature difference between the current indoor environment temperature and the current air conditioner inner pipe temperature specifically includes:
and when the power supply time length of the compressor is more than or equal to a power supply time length threshold value, calculating a temperature difference value between the current indoor environment temperature and the current air conditioner inner pipe temperature.
Further, the air conditioner compressor protection program when executed by the processor further implements the following operations:
setting an air conditioner compressor to be in a powered state, and taking the temperature difference value calculated at each moment in a preset powered time period as a historical temperature difference value;
searching the maximum value and the minimum value in the historical temperature difference value, taking the searched maximum value as the maximum temperature difference value, and taking the searched minimum value as the minimum temperature difference value;
calculating a difference value between the maximum temperature difference value and the maximum temperature difference value, and taking the calculated difference value as a temperature difference amplitude value;
the counting of the duration of the temperature difference value smaller than or equal to the first temperature threshold value and taking the counted duration as the low efficacy duration specifically include:
and when the temperature difference amplitude is larger than or equal to a second temperature threshold value, counting the duration of the temperature difference value smaller than or equal to the first temperature threshold value, and taking the counted duration as the low-efficacy duration.
Further, the air conditioner compressor protection program when executed by the processor further implements the following operations:
and when the temperature difference amplitude is smaller than a second temperature threshold value, waiting for a second preset time length, and returning to the step of acquiring the current indoor environment temperature and the current air conditioner inner pipe temperature after waiting for the second preset time length.
Further, the air conditioner compressor protection program when executed by the processor further implements the following operations:
counting the duration of the temperature difference value larger than the first temperature threshold value, and taking the counted duration as the normal working duration;
and when the normal working time length is more than or equal to the normal working time length threshold value, clearing the stored current shutdown times, waiting for a third preset time length, and returning to the step of acquiring the current indoor environment temperature and the current air conditioner inner pipe temperature after waiting for the third preset time length.
According to the scheme, the temperature difference value is obtained through calculation of the current indoor environment temperature and the current air conditioner inner pipe temperature, whether the air conditioner compressor is subjected to overload protection or not is judged according to the duration of the first temperature threshold value, the air conditioner compressor is controlled to be powered off when the current shutdown frequency is too large, and the air conditioner compressor can be prevented from being damaged due to frequent overload protection. And because the current or voltage of the air conditioner compressor is not required to be detected when the air conditioner compressor is judged to be subjected to overload protection, the air conditioner can be prevented from being provided with a current transformer or a pressure switch, the cost of the air conditioner is saved, the production process of the air conditioner is simplified, and the production efficiency of the air conditioner is improved.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A method for protecting an air conditioner compressor is characterized by comprising the following steps:
acquiring the current indoor environment temperature and the current air conditioner inner pipe temperature;
calculating a temperature difference value between the current indoor environment temperature and the current air conditioner inner pipe temperature;
setting an air conditioner compressor to be in a powered state, and taking the temperature difference value calculated at each moment in a preset powered time period as a historical temperature difference value; searching the maximum value and the minimum value in the historical temperature difference value, taking the searched maximum value as the maximum temperature difference value, and taking the searched minimum value as the minimum temperature difference value;
calculating a difference value between the maximum temperature difference value and the maximum temperature difference value, and taking the calculated difference value as a temperature difference amplitude value;
counting the duration of the temperature difference value less than or equal to the first temperature threshold value, and taking the counted duration as the low efficacy duration, specifically comprising:
when the temperature difference amplitude is larger than or equal to a second temperature threshold value, counting the duration of the temperature difference value smaller than or equal to the first temperature threshold value, and taking the counted duration as the low-efficacy duration;
when the low-efficacy duration is greater than or equal to the low-efficacy duration threshold value, self-increasing the stored current shutdown times;
and when the current shutdown frequency is more than or equal to the shutdown frequency threshold value, controlling the air conditioner compressor to be powered off so as to protect the air conditioner compressor.
2. The method for protecting an air conditioner compressor according to claim 1, wherein after the self-increasing of the stored current number of stops when the low power efficiency time period is greater than or equal to a low power efficiency time period threshold value, the method for protecting an air conditioner compressor further comprises:
and when the current shutdown times are smaller than the shutdown time threshold value, waiting for a first preset time length, and returning to the step of acquiring the current indoor environment temperature and the current air conditioner inner pipe temperature after waiting for the first preset time length.
3. The air conditioner compressor protection method as claimed in claim 1, wherein before calculating the temperature difference between the current indoor ambient temperature and the current air conditioner inner tube temperature, the air conditioner compressor protection method further comprises:
setting the air conditioner compressor to be in a powered state, counting the duration of the air conditioner compressor in the powered state, and taking the counted duration as the powered duration of the compressor;
the calculating of the temperature difference between the current indoor environment temperature and the current air conditioner inner pipe temperature specifically includes:
and when the power supply time length of the compressor is more than or equal to a power supply time length threshold value, calculating a temperature difference value between the current indoor environment temperature and the current air conditioner inner pipe temperature.
4. The air conditioner compressor protection method as claimed in claim 1, wherein after calculating the difference between the maximum temperature difference and taking the calculated difference as the magnitude of the temperature difference, the air conditioner compressor protection method further comprises:
and when the temperature difference amplitude is smaller than a second temperature threshold value, waiting for a second preset time length, and returning to the step of acquiring the current indoor environment temperature and the current air conditioner inner pipe temperature after waiting for the second preset time length.
5. The air conditioner compressor protection method as claimed in claim 1, wherein after calculating the temperature difference between the current indoor ambient temperature and the current air conditioner inner tube temperature, the air conditioner compressor protection method further comprises:
counting the duration of the temperature difference value larger than the first temperature threshold value, and taking the counted duration as the normal working duration;
and when the normal working time length is more than or equal to the normal working time length threshold value, clearing the stored current shutdown times, waiting for a third preset time length, and returning to the step of acquiring the current indoor environment temperature and the current air conditioner inner pipe temperature after waiting for the third preset time length.
6. An air conditioner compressor protection apparatus, comprising a memory, a processor and an air conditioner compressor protection program stored on the memory and executable on the processor, wherein the air conditioner compressor protection program, when executed by the processor, implements the steps of the air conditioner compressor protection method of any one of claims 1 to 5.
7. An air conditioner characterized in that it comprises an air conditioner compressor protection device according to claim 6.
8. An air condition compressor protection device, characterized by comprising:
the acquisition module is used for acquiring the current indoor environment temperature and the current air conditioner inner pipe temperature;
the calculation module is used for calculating the temperature difference between the current indoor environment temperature and the current air conditioner inner pipe temperature;
the temperature difference value is used as a historical temperature difference value, and the temperature difference value is calculated at each moment in a preset power supply time period; searching the maximum value and the minimum value in the historical temperature difference value, taking the searched maximum value as the maximum temperature difference value, and taking the searched minimum value as the minimum temperature difference value;
the temperature difference amplitude value is used for calculating the difference value between the maximum temperature difference value and the maximum temperature difference value, and the calculated difference value is used as the temperature difference amplitude value;
the counting module is used for counting the duration of the temperature difference value smaller than or equal to the first temperature threshold value, and taking the counted duration as the low-efficacy duration, and specifically comprises the following steps:
when the temperature difference amplitude is larger than or equal to a second temperature threshold value, counting the duration of the temperature difference value smaller than or equal to the first temperature threshold value, and taking the counted duration as the low-efficacy duration;
the counting module is used for automatically increasing the stored current shutdown times when the low-efficacy duration is greater than or equal to the low-efficacy duration threshold value;
and the power-off module is used for controlling the power-off of the air-conditioning compressor when the current shutdown frequency is more than or equal to the shutdown frequency threshold value so as to protect the air-conditioning compressor.
9. A computer readable storage medium, characterized in that the computer readable storage medium has stored thereon an air conditioner compressor protection program, which when executed by a processor implements the steps of the air conditioner compressor protection method according to any one of claims 1 to 5.
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| CN110470038A (en) * | 2019-08-21 | 2019-11-19 | 南京天加环境科技有限公司 | A kind of judgement and guard method that unit air-conditioner booting is abnormal |
| CN110779161B (en) * | 2019-11-18 | 2021-08-27 | 宁波奥克斯电气股份有限公司 | Control method and device for compressor overload protection and air conditioner |
| CN112303820B (en) * | 2020-09-18 | 2022-04-15 | 珠海格力电器股份有限公司 | Overload protection detection control method, computer readable storage medium and air conditioner |
| CN112944563A (en) * | 2021-02-22 | 2021-06-11 | 青岛海尔空调电子有限公司 | Compressor control method for air conditioner |
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