CN111425986A - Indoor unit of air conditioner, control method, air conditioner and readable storage medium - Google Patents
Indoor unit of air conditioner, control method, air conditioner and readable storage medium Download PDFInfo
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- CN111425986A CN111425986A CN202010263487.8A CN202010263487A CN111425986A CN 111425986 A CN111425986 A CN 111425986A CN 202010263487 A CN202010263487 A CN 202010263487A CN 111425986 A CN111425986 A CN 111425986A
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- indoor unit
- temperature
- refrigerant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/38—Failure diagnosis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/36—Responding to malfunctions or emergencies to leakage of heat-exchange fluid
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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
- F24F11/41—Defrosting; Preventing freezing
- F24F11/43—Defrosting; Preventing freezing of indoor units
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
Abstract
The invention provides an indoor unit of an air conditioner, a control method, the air conditioner and a readable storage medium. The indoor unit of the air conditioner comprises a heat exchanger; the valve body is arranged on a pipeline of the heat exchanger; the temperature sensor assembly is used for collecting the temperature of a refrigerant in the heat exchanger; the first temperature sensor is used for acquiring the ambient temperature; and the controller is connected with the temperature sensor assembly and the first temperature sensor and is used for determining that the indoor unit is in a failure state according to the ambient temperature and the temperature of the refrigerant and determining the failure type of the indoor unit according to the failure state of the indoor unit and the opening and closing state of the valve body. The method and the device realize quick determination of whether the indoor unit has the fault, avoid the dripping and icing of the indoor unit caused by the fact that the fault of the indoor unit cannot be detected, and can accurately determine the fault type of the fault of the indoor unit, so that a worker can timely process the fault according to the fault type of the indoor unit.
Description
Technical Field
The invention belongs to the field of air conditioner control, and particularly relates to an indoor unit of an air conditioner, a control method of the indoor unit of the air conditioner, the air conditioner and a computer readable storage medium.
Background
In the multi-split air conditioning system, if the indoor unit has a fault, the phenomenon of icing and dripping of the heat exchanger of the indoor unit can be caused under the condition that the indoor unit is not operated. How to judge whether the indoor unit has a fault or not and further determine the type of the fault existing in the indoor unit becomes an urgent problem to be solved.
Disclosure of Invention
The present invention is directed to solving one of the technical problems of the prior art or the related art.
To this end, a first aspect of the present invention proposes an indoor unit of an air conditioner.
A second aspect of the present invention provides a method of controlling an indoor unit of an air conditioner.
A third aspect of the present invention provides an air conditioner.
A fourth aspect of the invention is directed to a computer-readable storage medium.
In view of the above, according to a first aspect of the present invention, there is provided an indoor unit of an air conditioner, including a heat exchanger; the valve body is arranged on a pipeline of the heat exchanger; the temperature sensor assembly is used for collecting the temperature of a refrigerant in the heat exchanger; the first temperature sensor is used for acquiring the ambient temperature; the controller is connected with the temperature sensor assembly and the first temperature sensor and used for determining that the indoor unit is in a failure state according to the ambient temperature and the temperature of a refrigerant and determining the failure type of the indoor unit according to the failure state of the indoor unit and the opening and closing state of the valve body; wherein the fault type comprises a communication fault and/or a valve body leakage fault.
The invention provides an indoor unit of an air conditioner, comprising: the temperature control valve comprises a heat exchanger, a valve body, a temperature sensor assembly, a first temperature sensor and a controller. The valve body is arranged on a pipeline of the heat exchanger, the on-off of the pipeline of the heat exchanger can be controlled by a switch of the valve body, the temperature sensor assembly is arranged on the heat exchanger and can collect the temperature of a refrigerant in the heat exchanger, the first temperature sensor can collect the ambient temperature of the environment where the indoor unit is located, the controller is connected with the temperature sensor and the sensor assembly, the controller can determine whether the indoor unit has faults or not according to the ambient temperature and the temperature of the refrigerant and the on-off state of the valve body, and under the condition that the indoor unit has the faults, the fault type comprises communication faults and/or valve body leakage faults. When the indoor unit is in the valve body leakage type fault, the outdoor unit of the air conditioner is in a working state, even if the valve body of the heat exchanger of the indoor unit is in a closed state, the refrigerant still can flow into the heat exchanger through the valve body, the low-temperature refrigerant can cause the heat exchanger to freeze, and therefore the indoor unit drips water. According to the method and the device, when the indoor unit is in a non-running state, the temperature of the refrigerant in the heat exchanger of the indoor unit and the ambient temperature of the indoor unit are detected, whether the indoor unit is in a fault state or not is determined according to the temperature of the refrigerant and the ambient temperature, if the indoor unit is in the fault state, the fault type of the indoor unit is determined according to the opening and closing state of the valve body of the indoor unit in the fault state, whether the indoor unit has the fault or not is determined rapidly, the indoor unit is prevented from dripping and icing due to the fact that the fault of the indoor unit cannot be detected, the fault type of the indoor unit can be determined accurately, and a worker can process the fault timely according.
The indoor unit is in a non-running state, including that the indoor unit is in a shutdown state, the valve body is in a closed state at the moment, or the valve body is in an initial opening state at the moment.
Under the condition that a compressor of the air conditioner works, the temperature detected by the temperature sensor assembly can reflect the state of a refrigerant in the heat exchanger. The opening of the valve body enables the refrigerant to flow into the heat exchanger, the closing of the valve body enables the refrigerant to flow out of the heat exchanger, and when the valve body is in a leakage state, the refrigerant can flow into the heat exchanger through the valve body. The controller can determine whether the indoor unit is in a fault state according to the temperature of a refrigerant in the heat exchanger and the ambient temperature, and when the indoor unit is in the fault state, the controller determines the fault state of the type of the fault of the indoor unit according to the action state of the valve body.
In addition, according to the indoor unit of an air conditioner in the above technical solution provided by the present invention, the indoor unit may further have the following additional technical features:
in the above technical solution, the step of determining that the indoor unit is in the failure state by the controller according to the ambient temperature and the refrigerant temperature specifically includes: determining that the temperature of the refrigerant is in a set temperature value range; and determining that the indoor unit is in a fault state according to the condition that the ambient temperature is greater than a first set temperature value and the temperature of the refrigerant is in a set temperature value range for a first set time.
In the technical scheme, the temperature of the refrigerant is within a numerical range of a set temperature, the ambient temperature is greater than a first set temperature value, the time that the temperature of the refrigerant is within the numerical range of the set temperature is timed, and if the temperature of the refrigerant is within the numerical range of the set temperature for a first set time, the indoor unit is determined to be in a fault state. And if the temperature of the refrigerant is not in the set temperature numerical range or is in the set temperature numerical range and does not last for the first set time, determining that the indoor unit is not in the fault state. The refrigerant temperature, the environmental temperature and the set temperature are compared with the first set temperature value, so that whether the indoor unit is in a fault state or not can be quickly determined according to the judgment result.
It is understood that the temperature detected by the temperature sensor assembly may be affected by other factors, and the indoor unit cannot be considered to be in a failure state when the temperature detected by the temperature sensor is within the set temperature range.
In any of the above technical solutions, the step of determining the type of the failure of the indoor unit by the controller according to the failure state of the indoor unit and the opening/closing state of the valve body specifically includes: determining the fault type of the indoor unit as a valve leakage fault according to the closed state of the valve body; or determining the fault type of the indoor unit as a communication fault according to the opening state of the valve body.
In the technical scheme, in the multi-split air conditioning system, the valve body is determined to be in the closed state, the indoor unit can be considered to be in the closed state, the environment temperature is determined to be higher than a first set temperature value, and the refrigerant temperature is within a set temperature numerical range, so that the indoor unit is determined to be in the valve body leakage type fault. When the air conditioner works in a refrigeration mode, the valve body is in a closed state, if the indoor unit runs in a normal state without faults, no low-temperature refrigerant exists in the heat exchanger, and the temperature of the refrigerant detected by the temperature sensor assembly is not in a set range. When the valve body is in a closed state, the detected temperature of the refrigerant in the heat exchanger is in a set range and lasts for the first time, it is determined that a low-temperature refrigerant enters the heat exchanger in the closed state of the valve body, and the fault type of the indoor unit can be determined to be a valve body leakage type fault.
And when the valve body of the indoor unit is in an opening state of the initial opening degree, the indoor unit can be considered to be in a standby state, the environment temperature is determined to be higher than a first set temperature value, and the refrigerant temperature is within a set temperature value range, the indoor unit is determined to be in a communication fault. If the temperature of the refrigerant in the heat exchanger of the indoor unit is detected to be within the set temperature value range, it is determined that a low-temperature refrigerant exists in the refrigerant, a signal line of the indoor unit can be determined to be connected in a wrong way, the indoor unit with the signal line connected in the wrong way cannot send the control instruction to the corresponding outdoor unit, so that the outdoor unit operates in a refrigeration mode, and the refrigerant enters the heat exchanger of the indoor unit in the standby state. After the indoor unit is determined to have a fault, the fault type of the indoor unit can be determined according to the actuating device of the valve body.
In any of the above solutions, the controller is further configured to: controlling the valve body to close according to the communication type fault of the indoor unit; and the timing valve body is in a closed state for a second set time, and the step of determining that the indoor unit is in a fault state according to the ambient temperature and the refrigerant temperature is returned to be executed.
In the technical scheme, in the multi-split air conditioning system, a valve body of an indoor unit is in an opening state of an initial opening degree, the environment temperature is determined to be higher than a first set temperature value, the refrigerant temperature is within a set temperature value range, the valve body of the indoor unit is controlled to be closed after the indoor unit is determined to be in a communication fault, the valve body of the indoor unit is timed to be closed, the environment temperature and the refrigerant temperature are detected again after the valve body is closed and continues in a second set market, and whether the indoor unit is in a fault state is determined again according to the environment temperature and the refrigerant temperature. If the indoor unit is still in a fault state at the moment, the fault type of the indoor unit can be determined to be a valve leakage fault due to the fact that the valve body is controlled to be closed previously, and if the indoor unit is not in the fault state at the moment, the indoor unit can be determined not to freeze the heat exchanger due to the fact that low-temperature refrigerants exist in the heat exchanger after the valve body of the indoor unit is controlled to be closed.
In any of the above aspects, the temperature sensor assembly comprises: the second temperature sensor is used for collecting the temperature of an input refrigerant of the heat exchanger; the third temperature sensor is used for collecting the temperature of the output refrigerant of the heat exchanger; the method comprises the following steps that a controller determines that the temperature of a refrigerant is within a set temperature numerical range, and specifically comprises the following steps: determining that the temperature of the input refrigerant is less than a second set temperature value; and/or determining that the temperature of the output refrigerant is less than a second set temperature value.
In the technical scheme, the temperature sensor assembly comprises a second temperature sensor and a third temperature sensor, wherein the second temperature sensor is arranged at a refrigerant inlet of the heat exchanger and used for collecting the input refrigerant temperature of the heat exchanger, and the third temperature sensor is arranged at a refrigerant outlet of the heat exchanger and used for collecting the output refrigerant temperature of the heat exchanger.
The controller determines that the temperature of the input refrigerant is less than a second set temperature value; and/or determining that the temperature of the output refrigerant is less than a second set temperature value, and determining that the temperature of the refrigerant is within a set temperature value range. If one of the input refrigerant temperature and the output refrigerant temperature is less than the second set temperature value, the refrigerant temperature can be determined to be within the numerical range of the set refrigerant temperature. Whether the temperature of the refrigerant is within the set temperature range can be accurately determined according to the input refrigerant temperature collected from the refrigerant inlet of the heat exchanger and the output refrigerant temperature collected from the refrigerant outlet of the heat exchanger. Whether the indoor unit has faults or not is accurately detected.
In any of the above technical solutions, the indoor unit further includes: a display device; the controller is connected with the display device and is also used for controlling the display device to output fault information related to the fault type.
In the technical scheme, the indoor unit further comprises a display device, the controller is connected with the display device, the controller can control the display device to display the fault state and the fault type of the indoor unit in a fault information mode, a prompt effect on workers and users is achieved, the users and the workers can know whether the air conditioner has faults or not in time, and the faults can be processed in time according to the fault types.
According to a second aspect of the present invention, there is provided a control method of an indoor unit of an air conditioner, including: determining that the indoor unit is in a fault state according to the ambient temperature and the refrigerant temperature; determining the fault type of the indoor unit according to the fault state of the indoor unit and the opening and closing state of the valve body; wherein the fault type comprises a communication fault and/or a valve body leakage fault.
In this technical scheme, when the indoor set is in the valve body and reveals the class trouble, the off-premises station when the air conditioner is in operating condition, even the valve body of the heat exchanger of indoor set is in the closed condition, the refrigerant still can flow into the heat exchanger through the valve body, the low temperature refrigerant can lead to the heat exchanger to freeze, thereby lead to the indoor set to drip, when the indoor set of air conditioner is in communication class trouble, then the off-premises station is under the mode of refrigeration, the control indoor set is opened, because the communication line misconnection, lead to the valve body of another indoor set to open, the indoor chance that another valve body was opened freezes and leads to dripping. According to the method and the device, the refrigerant temperature in the heat exchanger of the indoor unit and the ambient temperature where the indoor unit is located are detected, whether the indoor unit is in a fault state or not is determined according to the refrigerant temperature and the ambient temperature, if the indoor unit is in the fault state, the fault type of the indoor unit is determined according to the opening and closing state of the valve body of the indoor unit in the fault state, whether the indoor unit has a fault or not is determined quickly, the indoor unit is prevented from dripping and icing due to the fact that the fault of the indoor unit cannot be detected, the fault type of the indoor unit can be determined accurately, and a worker can process the fault in time according to the fault type of.
Under the condition that a compressor of the air conditioner works, the temperature detected by the temperature sensor assembly can reflect the state of a refrigerant in the heat exchanger. The opening of the valve body enables the refrigerant to flow into the heat exchanger, the closing of the valve body enables the refrigerant to flow out of the heat exchanger, and when the valve body is in a leakage state, the refrigerant can flow into the heat exchanger through the valve body. Whether the indoor unit is in a fault state can be determined according to the temperature of a refrigerant in the heat exchanger and the ambient temperature, and when the indoor unit is in the fault state, the fault state of which fault type the indoor unit is in is determined according to the action state of the valve body.
In any of the above technical solutions, the step of determining that the indoor unit is in the failure state according to the ambient temperature and the refrigerant temperature specifically includes: determining that the temperature of the refrigerant is in a set temperature value range; and determining that the indoor unit is in a fault state according to the condition that the ambient temperature is greater than a first set temperature value and the temperature of the refrigerant is in a set temperature value range for a first set time.
In the technical scheme, the temperature of the refrigerant is within a numerical range of a set temperature, the ambient temperature is greater than a first set temperature value, the time that the temperature of the refrigerant is within the numerical range of the set temperature is timed, and if the temperature of the refrigerant is within the numerical range of the set temperature for a first set time, the indoor unit is determined to be in a fault state. And if the temperature of the refrigerant is not in the set temperature numerical range or is in the set temperature numerical range and does not last for the first set time, determining that the indoor unit is not in the fault state. The refrigerant temperature, the environmental temperature and the set temperature are compared with the first set temperature value, so that whether the indoor unit is in a fault state or not can be quickly determined according to the judgment result.
It is understood that the temperature detected by the temperature sensor assembly may be affected by other factors, and the indoor unit cannot be considered to be in a failure state when the temperature detected by the temperature sensor is within the set temperature range.
In any of the above technical solutions, the step of determining the type of the failure of the indoor unit according to the failure state of the indoor unit and the opening/closing state of the valve body specifically includes: determining the fault type of the indoor unit as a valve leakage fault according to the closed state of the valve body; or determining the fault type of the indoor unit as a communication fault according to the opening state of the valve body.
In the technical scheme, in the multi-split air conditioning system, the valve body is determined to be in the closed state, the indoor unit can be considered to be in the closed state, the environment temperature is determined to be higher than a first set temperature value, and the refrigerant temperature is within a set temperature numerical range, so that the indoor unit is determined to be in the valve body leakage type fault. When the air conditioner works in a refrigeration mode, the valve body is in a closed state, if the indoor unit runs in a normal state without faults, no low-temperature refrigerant exists in the heat exchanger, and the temperature of the refrigerant detected by the temperature sensor assembly is not in a set range. When the valve body is in a closed state, the detected temperature of the refrigerant in the heat exchanger is in a set range and lasts for the first time, it is determined that a low-temperature refrigerant enters the heat exchanger in the closed state of the valve body, and the fault type of the indoor unit can be determined to be a valve body leakage type fault. The method and the device can determine whether the indoor unit has a fault state or not and determine the fault type of the indoor unit.
And when the valve body of the indoor unit is in an opening state of the initial opening degree, the indoor unit can be considered to be in a standby state, the environment temperature is determined to be higher than a first set temperature value, and the refrigerant temperature is within a set temperature value range, the indoor unit is determined to be in a communication fault. If the temperature of the refrigerant in the heat exchanger of the indoor unit is detected to be within the set temperature value range, it is determined that a low-temperature refrigerant exists in the refrigerant, a signal line of the indoor unit can be determined to be connected in a wrong way, the indoor unit with the signal line connected in the wrong way cannot send the control instruction to the corresponding outdoor unit, so that the outdoor unit operates in a refrigeration mode, and the refrigerant enters the heat exchanger of the indoor unit in the standby state. After the indoor unit is determined to have a fault, the fault type of the indoor unit can be determined according to the actuating device of the valve body.
In the technical scheme, in the multi-split air conditioning system, a valve body of an indoor unit is in an opening state of an initial opening degree, the indoor unit can be considered to be in a standby state, the environment temperature is determined to be higher than a first set temperature value, and the refrigerant temperature is within a set temperature value range, so that the indoor unit is determined to be in a communication fault. If the temperature of the refrigerant in the heat exchanger of the indoor unit is detected to be within the set temperature value range, the low-temperature refrigerant in the refrigerant is determined, the signal line of the indoor unit can be determined to be connected in a wrong way, the indoor unit with the signal line connected in a wrong way cannot send the control instruction to the corresponding outdoor unit, the outdoor unit is caused to operate in a refrigeration mode, the refrigerant enters the heat exchanger of the indoor unit in the standby state, and therefore the fact that whether the indoor unit has a fault state or not can be determined, and the fault type of the indoor unit can also be determined.
In any of the above technical solutions, the control method further includes: controlling the valve body to close according to the communication type fault of the indoor unit; and the timing valve body is in a closed state for a second set time, and the step of determining that the indoor unit is in a fault state according to the ambient temperature and the refrigerant temperature is returned to be executed.
In the technical scheme, in the multi-split air conditioning system, a valve body of an indoor unit is in an opening state of an initial opening degree, the environment temperature is determined to be higher than a first set temperature value, the refrigerant temperature is within a set temperature value range, the valve body of the indoor unit is controlled to be closed after the indoor unit is determined to be in a communication fault, the valve body of the indoor unit is timed to be closed, the environment temperature and the refrigerant temperature are detected again after the valve body is closed and continues in a second set market, and whether the indoor unit is in a fault state is determined again according to the environment temperature and the refrigerant temperature. If the indoor unit is still in a fault state at the moment, the fault type of the indoor unit can be determined to be a valve leakage fault due to the fact that the valve body is controlled to be closed previously, and if the indoor unit is not in the fault state at the moment, the indoor unit can be determined not to freeze the heat exchanger due to the fact that low-temperature refrigerants exist in the heat exchanger after the valve body of the indoor unit is controlled to be closed.
In any of the above technical solutions, the step of determining that the temperature of the refrigerant is within the set temperature range specifically includes: determining that the temperature of the input refrigerant is less than a second set temperature value; and/or determining that the temperature of the output refrigerant is less than a second set temperature value.
In the technical scheme, the temperature of an input refrigerant is determined to be less than a second set temperature value; and/or determining that the temperature of the output refrigerant is less than a second set temperature value, and determining that the temperature of the refrigerant is within a set temperature value range. If one of the input refrigerant temperature and the output refrigerant temperature is less than the second set temperature value, the refrigerant temperature can be determined to be within the numerical range of the set refrigerant temperature. Whether the temperature of the refrigerant is within the set temperature range can be accurately determined according to the input refrigerant temperature collected from the refrigerant inlet of the heat exchanger and the output refrigerant temperature collected from the refrigerant outlet of the heat exchanger. Whether the indoor unit has faults or not is accurately detected.
In any of the above technical solutions, the control method further includes: and controlling the display device to output fault information related to the fault type.
In the technical scheme, the control display device displays the fault state and the fault type of the indoor unit in the form of fault information, and plays a role in prompting workers and users, so that the users and the workers can know whether the air conditioner has a fault in time and can process the fault in time according to the fault type.
According to a third aspect of the present invention, there is provided an air conditioner comprising: an indoor unit of an air conditioner according to any one of the above technical solutions; the off-premises station, off-premises station and indoor set communication connection, the off-premises station includes: and the compressor is connected with the heat exchanger in the indoor unit.
In this technical solution, the present invention provides an air conditioner, including an indoor unit and an outdoor unit of the air conditioner according to any one of the above technical solutions. The outdoor unit comprises a compressor, the compressor is connected with the heat exchanger in the indoor unit, and the low-temperature refrigerant can be conveyed into the heat exchanger in the refrigeration mode of the air conditioner.
Since the air conditioner includes the indoor unit of the air conditioner in any one of the above technical solutions, all the beneficial effects of the indoor unit in any one of the above technical solutions are achieved, and redundant description is omitted here.
According to a fourth aspect of the present invention, there is provided a computer-readable storage medium comprising:
the computer readable storage medium stores a control program of the indoor unit of the air conditioner, and the steps of the control method of the indoor unit of the air conditioner in any one of the above technical solutions are realized when the control program of the indoor unit of the air conditioner is executed by the processor. Therefore, the method has all the beneficial effects of the control method of the indoor unit in any technical scheme, and redundant description is omitted.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic view illustrating a structure of an indoor unit of an air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic view showing a structure of an indoor unit of an air conditioner according to another embodiment of the present invention;
fig. 3 is a flowchart illustrating a control method of an indoor unit of an air conditioner according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating a control method of an indoor unit of an air conditioner according to another embodiment of the present invention;
fig. 5 is a flowchart illustrating a control method of an indoor unit of an air conditioner according to still another embodiment of the present invention;
FIG. 6 illustrates a schematic block diagram of an air conditioning system in a complete embodiment of the present invention;
fig. 7 shows a schematic block diagram of an air conditioning system in another complete embodiment of the invention.
Wherein, the correspondence between the reference numbers and the component names in fig. 1 and fig. 2 is:
100 heat exchanger, 200 valve body, 300 temperature sensor assembly, 320 second temperature sensor, 340 third temperature sensor, 400 first temperature sensor, 500 fan.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
An indoor unit of an air conditioner, a control method of the indoor unit of the air conditioner, and a computer-readable storage medium according to some embodiments of the present invention are described below with reference to fig. 1 to 7.
The first embodiment is as follows:
as shown in fig. 1, in an embodiment of the present invention, there is provided an indoor unit of an air conditioner, including a heat exchanger 100; the valve body 200, the valve body 200 is set up on the pipeline of the heat exchanger 100; the temperature sensor assembly 300 is used for collecting the temperature of the refrigerant in the heat exchanger 100; a first temperature sensor 400 for collecting ambient temperature; the controller is connected with the temperature sensor assembly 300 and the first temperature sensor 400, and is used for determining that the indoor unit is in a failure state according to the ambient temperature and the temperature of the refrigerant and determining the failure type of the indoor unit according to the failure state of the indoor unit and the opening and closing state of the valve body 200 when the indoor unit is in the non-running state; wherein the fault type includes a communication-type fault and/or a leakage-type fault of the valve body 200.
In this embodiment, an indoor unit of an air conditioner includes: a heat exchanger 100, a valve body 200 and a temperature sensor assembly 300, a first temperature sensor 400 and a controller. The valve body 200 is arranged on a pipeline of the heat exchanger 100, the on-off of the pipeline of the heat exchanger 100 can be controlled by the on-off of the valve body 200, the temperature sensor assembly 300 is arranged on the heat exchanger 100 and can collect the temperature of a refrigerant in the heat exchanger 100, the ambient temperature of the environment where the indoor unit is located can be collected by the first temperature sensor 400, the controller is connected with the temperature sensor and the sensor assembly and can determine whether the indoor unit has a fault according to the ambient temperature and the temperature of the refrigerant and the on-off state of the valve body 200, and under the condition that the indoor unit has the fault, the fault type of the indoor unit is determined according to the on-off state of the valve body 200, wherein the fault type comprises a communication fault and/or a leakage fault of. When the indoor unit is in a leakage fault of the valve body 200, when the outdoor unit of the air conditioner is in a working state, even if the valve body 200 of the heat exchanger 100 of the indoor unit is in a closed state, the refrigerant still flows into the heat exchanger 100 through the valve body 200, the heat exchanger 100 is frozen by the low-temperature refrigerant, and therefore the indoor unit drips water, when the indoor unit of the air conditioner is in a communication fault, the outdoor unit is in a refrigeration mode, the controller controls the indoor unit to be opened, due to the fact that a communication line is in wrong connection, the valve body 200 of another indoor unit is opened, and the indoor unit opened by the other valve body 200 is frozen to drip water. According to the method and the device, when the indoor unit is in a non-running state, the temperature of the refrigerant in the heat exchanger 100 of the indoor unit and the ambient temperature of the indoor unit are detected, whether the indoor unit is in a fault state or not is determined according to the temperature of the refrigerant and the ambient temperature, if the indoor unit is in the fault state, the fault type of the indoor unit is determined according to the opening and closing state of the valve body 200 of the indoor unit in the fault state, whether the indoor unit has the fault or not is rapidly determined, the indoor unit is prevented from dripping and icing due to the fact that the fault of the indoor unit cannot be detected, the fault type of the indoor unit can be accurately determined, and a worker can timely process the fault according.
The indoor unit is in a non-running state, including that the indoor unit is in a shutdown state, at this time, the valve body 200 is in a closed state, or at this time, the valve body 200 is in an initial opening state.
When the compressor of the air conditioner is operated, the temperature detected by the temperature sensor assembly 300 can reflect the state of the refrigerant in the heat exchanger 100. The opening of the valve body 200 enables the refrigerant to flow into the heat exchanger 100, the closing of the valve body 200 enables the refrigerant to flow out of the heat exchanger 100, and when the valve body 200 is in a leakage state, the refrigerant flows into the heat exchanger 100 through the valve body 200. The controller can determine whether the indoor unit is in a fault state according to the temperature of the refrigerant in the heat exchanger 100 and the ambient temperature, and when the indoor unit is in the fault state, the controller determines what type of fault the indoor unit is in according to the action state of the valve body 200.
Example two:
as shown in fig. 2, in another embodiment of the present invention, there is provided an indoor unit of an air conditioner, including a heat exchanger 100, a valve body 200, a temperature sensor assembly 300, a first temperature sensor 400, and a controller;
the temperature sensor assembly 300 includes: the second temperature sensor 320 is used for collecting the temperature of the input refrigerant of the heat exchanger 100; a third temperature sensor 340 for acquiring the temperature of the output refrigerant of the heat exchanger 100;
and the display device is connected with the controller, and the controller is also used for controlling the display device to output fault information related to the fault type.
In this embodiment, the temperature of the refrigerant in the heat exchanger 100 is determined by the temperature sensor assembly 300, the ambient temperature is determined by the first temperature sensor 400, the indoor unit is determined to be in a failure state according to the ambient temperature and the temperature of the refrigerant, and the failure type of the indoor unit is determined according to the failure state of the indoor unit and the opening and closing state of the valve body 200; wherein the fault type includes a communication-type fault and/or a leakage-type fault of the valve body 200.
The temperature sensor assembly 300 includes a second temperature sensor 320 and a third temperature sensor 340, wherein the second temperature sensor 320 is disposed at a refrigerant inlet of the heat exchanger 100 and is used for acquiring an input refrigerant temperature of the heat exchanger 100, and the third temperature sensor 340 is disposed at a refrigerant outlet of the heat exchanger 100 and is used for acquiring an output refrigerant temperature of the heat exchanger 100.
The controller determines that the temperature of the input refrigerant is less than a second set temperature value; and/or determining that the temperature of the output refrigerant is less than a second set temperature value, and determining that the temperature of the refrigerant is within a set temperature value range. If one of the input refrigerant temperature and the output refrigerant temperature is less than the second set temperature value, the refrigerant temperature can be determined to be within the numerical range of the set refrigerant temperature. Whether the temperature of the refrigerant is within the set temperature range can be accurately determined according to the input refrigerant temperature collected from the refrigerant inlet of the heat exchanger 100 and the output refrigerant temperature collected from the refrigerant outlet of the heat exchanger 100. Whether the indoor unit has faults or not is accurately detected.
The indoor unit further comprises a display device, the controller is connected with the display device, the controller can control the display device to display the fault state and the fault type of the indoor unit in a fault information mode, a prompt effect for workers and users is achieved, the users and the workers can know whether the air conditioner has faults or not in time, and the faults can be processed in time according to the fault types.
In one embodiment, the second set temperature value is 0 degrees.
In this embodiment, if the temperature of the refrigerant in the heat exchanger 100 is lower than 0 degrees, and at this time, when the indoor unit is in a leakage-type failure or a communication-type failure of the valve 200, and other components in the indoor unit do not operate, the heat exchanger 100 may freeze water, and when the temperature of the refrigerant is detected to be lower than 0 degrees, it is determined that the indoor unit is in a failure state.
In any of the above embodiments, the step of determining, by the controller, that the indoor unit is in the failure state according to the ambient temperature and the refrigerant temperature specifically includes: determining that the temperature of the refrigerant is in a set temperature value range; and determining that the indoor unit is in a fault state according to the condition that the ambient temperature is greater than a first set temperature value and the temperature of the refrigerant is in a set temperature value range for a first set time.
In this embodiment, the refrigerant temperature is within the value range of the set temperature, the ambient temperature is greater than the first set temperature value, the time that the refrigerant temperature is within the value range of the set temperature is timed, and if the refrigerant temperature is within the value range of the set temperature for the first set time period, the indoor unit is determined to be in the fault state. And if the temperature of the refrigerant is not in the set temperature numerical range or is in the set temperature numerical range and does not last for the first set time, determining that the indoor unit is not in the fault state. The refrigerant temperature, the environmental temperature and the set temperature are compared with the first set temperature value, so that whether the indoor unit is in a fault state or not can be quickly determined according to the judgment result.
In one embodiment, the first set temperature value is 17 degrees and the first set time period is 10 minutes.
In this embodiment, when the ambient temperature is higher than 17 degrees, it is considered that the outdoor unit of the air conditioner is allowed to operate in the cooling mode.
It is understood that the temperature detected by the temperature sensor assembly 300 may be affected by other factors, and the indoor unit cannot be considered to be in a failure state when the temperature detected by the temperature sensor is within the set temperature range.
In any of the above embodiments, the step of determining, by the controller, the type of failure of the indoor unit according to the failure state of the indoor unit and the open/close state of the valve body 200 specifically includes: determining the fault type of the indoor unit as a leakage fault of the valve body 200 according to the closed state of the valve body 200; or determining the fault type of the indoor unit as a communication fault according to the open state of the valve body 200.
In this embodiment, in the multi-split air conditioning system, if it is determined that the valve 200 is in the closed state, it may be determined that the indoor unit is in the shutdown state, and it is determined that the ambient temperature is higher than the first set temperature value, and if the refrigerant temperature is within the set temperature range, it is determined that the indoor unit is in a leakage-type fault with the valve 200. When the air conditioner works in a cooling mode, the valve body 200 is in a closed state, if the indoor unit runs in a normal state without failure, no low-temperature refrigerant exists in the heat exchanger 100, and the temperature of the refrigerant detected by the temperature sensor assembly 300 is not in a set range. When the valve body 200 is in the closed state, and the detected temperature of the refrigerant in the heat exchanger 100 is in the set range and lasts for the first duration, it is determined that a low-temperature refrigerant enters the heat exchanger 100 in the closed state of the valve body 200, and it can be determined that the fault type of the indoor unit is a leakage fault of the valve body 200.
And when the valve body 200 of the indoor unit is in an opening state of an initial opening degree, determining that the ambient temperature is higher than a first set temperature value and the temperature of the refrigerant is within a set temperature value range, and determining that the indoor unit is in a communication fault. When the indoor unit does not send an instruction for controlling the outdoor unit to refrigerate, the indoor unit maintains the initial opening degree in the standby state, and if the temperature of the refrigerant in the heat exchanger 100 of the indoor unit is detected to be within the set temperature value range, the low-temperature refrigerant in the refrigerant is determined, the signal line of the indoor unit can be determined to be connected in a wrong way, the indoor unit with the signal line connected in the wrong way cannot send the control instruction to the outdoor unit corresponding to the indoor unit, so that the outdoor unit operates in the refrigerating mode, the refrigerant enters the heat exchanger 100 of the indoor unit in the standby state, and the fault type of the indoor unit can be determined according to the action device of the valve body after the indoor unit is determined to have a.
In any of the above embodiments, the controller is further configured to: controlling the valve body 200 to close according to the communication type of the fault of the indoor unit; and the timing valve body 200 is in the closed state for a second set time, and the step of determining that the indoor unit is in the fault state according to the ambient temperature and the refrigerant temperature is returned to be executed.
In this embodiment, in the multi-split air conditioning system, the valve body 200 of the indoor unit is in an open state of an initial opening degree, it is determined that the ambient temperature is higher than a first set temperature value, and the refrigerant temperature is within a set temperature range, after it is determined that the indoor unit is in a communication type fault, the valve body 200 of the indoor unit is controlled to close, the valve body 200 of the indoor unit is timed to close, when the valve body 200 is closed for a second set market, the ambient temperature and the refrigerant temperature are detected again, and whether the indoor unit is in a fault state is determined again according to the ambient temperature and the refrigerant temperature. If the indoor unit is still in a fault state at this time, the fault type of the indoor unit can be determined to be a leakage fault of the valve body 200 because the valve body 200 is controlled to be closed previously, and if the indoor unit is not in the fault state at this time, it can be determined that the heat exchanger 100 of the indoor unit is not frozen due to the low-temperature refrigerant existing in the heat exchanger 100 after the valve body 200 of the indoor unit is controlled to be closed.
In any of the above embodiments, the indoor unit further includes a fan 500, and the first temperature sensor 400 is disposed at a position between the fan 500 and the heat exchanger 100, and can determine the ambient temperature of the indoor unit by collecting the temperature of the intake air of the indoor unit.
Example three:
as shown in fig. 3, in an embodiment of the present invention, a method for controlling an indoor unit of an air conditioner includes:
step S102, the indoor unit is in a non-running state, and the indoor unit is determined to be in a fault state according to the ambient temperature and the refrigerant temperature;
and step S104, determining the fault type of the indoor unit according to the fault state of the indoor unit and the opening and closing state of the valve body.
Wherein the fault type comprises a communication fault and/or a valve body leakage fault.
In the embodiment, the indoor unit is in a non-running state, the indoor unit is determined to be in a fault state according to the ambient temperature and the refrigerant temperature, and the fault type of the indoor unit is determined according to the fault state of the indoor unit and the opening and closing state of the valve body. The fault type comprises two types of communication faults and/or valve body leakage faults.
When the indoor unit is in the valve body leakage fault, the outdoor unit of the air conditioner is in a working state, even if the valve body of the heat exchanger of the indoor unit is in a closed state, the refrigerant still can flow into the heat exchanger through the valve body, the low-temperature refrigerant can cause the heat exchanger to freeze, so that the indoor unit drips. According to the method and the device, the refrigerant temperature in the heat exchanger of the indoor unit and the ambient temperature where the indoor unit is located are detected, whether the indoor unit is in a fault state or not is determined according to the refrigerant temperature and the ambient temperature, if the indoor unit is in the fault state, the fault type of the indoor unit is determined according to the opening and closing state of the valve body of the indoor unit in the fault state, whether the indoor unit has a fault or not is determined quickly, the indoor unit is prevented from dripping and icing due to the fact that the fault of the indoor unit cannot be detected, the fault type of the indoor unit can be determined accurately, and a worker can process the fault in time according to the fault type of.
Under the condition that a compressor of the air conditioner works, the temperature detected by the temperature sensor assembly can reflect the state of a refrigerant in the heat exchanger. The opening of the valve body enables the refrigerant to flow into the heat exchanger, the closing of the valve body enables the refrigerant to flow out of the heat exchanger, and when the valve body is in a leakage state, the refrigerant can flow into the heat exchanger through the valve body. Whether the indoor unit is in a fault state can be determined according to the temperature of a refrigerant in the heat exchanger and the ambient temperature, and when the indoor unit is in the fault state, the fault state of which fault type the indoor unit is in is determined according to the action state of the valve body.
Example four:
as shown in fig. 4, in another embodiment of the present invention, a method for controlling an indoor unit of an air conditioner includes:
step S202, the indoor unit is in a non-running state, and the temperature of the refrigerant is determined to be in a set temperature value range;
step S204, according to the condition that the environment temperature is greater than a first set temperature value, timing the refrigerant temperature in a set temperature value range for a first set time, and determining that the indoor unit is in a fault state;
and step S206, determining the fault type of the indoor unit according to the fault state of the indoor unit and the opening and closing state of the valve body.
Wherein the fault type comprises a communication fault and/or a valve body leakage fault.
In this embodiment, the refrigerant temperature is within the value range of the set temperature, the ambient temperature is greater than the first set temperature value, the time that the refrigerant temperature is within the value range of the set temperature is timed, and if the refrigerant temperature is within the value range of the set temperature for the first set time period, the indoor unit is determined to be in the fault state. And if the temperature of the refrigerant is not in the set temperature numerical range or is in the set temperature numerical range and does not last for the first set time, determining that the indoor unit is not in the fault state. The refrigerant temperature, the environmental temperature and the set temperature are compared with the first set temperature value, so that whether the indoor unit is in a fault state or not can be quickly determined according to the judgment result.
It is understood that the temperature detected by the temperature sensor assembly may be affected by other factors, and the indoor unit cannot be considered to be in a failure state when the temperature detected by the temperature sensor is within the set temperature range.
Example five:
as shown in fig. 5, in another embodiment of the present invention, a method for controlling an indoor unit of an air conditioner includes:
step S302, the indoor unit is in a non-running state,
step S304, determining whether the indoor unit is in a fault state according to the ambient temperature and the refrigerant temperature, if so, executing step S306, and if not, ending;
step S306, judging whether the valve body is in a closed state, if so, executing step S308, otherwise, executing step S310;
step S308, determining the fault type of the indoor unit as a valve body leakage fault;
step S310, determining the fault type of the indoor unit as a communication fault;
and S312, controlling the valve to close, timing the valve to be in a closed state for a second set time, and returning to the step of determining whether the indoor unit is in a fault state according to the ambient temperature and the refrigerant temperature.
In this embodiment, in the multi-split air conditioning system, it is determined that the valve body is in the closed state, it may be considered that the indoor unit is in the closed state, and it is determined that the ambient temperature is higher than the first set temperature value, and the refrigerant temperature is within the set temperature range, it is determined that the indoor unit is in the valve body leakage type fault. When the air conditioner works in a refrigeration mode, the valve body is in a closed state, if the indoor unit runs in a normal state without faults, no low-temperature refrigerant exists in the heat exchanger, and the temperature of the refrigerant detected by the temperature sensor assembly is not in a set range. When the valve body is in a closed state, the detected temperature of the refrigerant in the heat exchanger is in a set range and lasts for a first time, it is determined that a low-temperature refrigerant enters the heat exchanger in the closed state of the valve body, and the fault type of the indoor unit can be determined to be a valve body leakage type fault; and when the valve body of the indoor unit is in an opening state of the initial opening degree, the indoor unit can be considered to be in a standby state, the environment temperature is determined to be higher than a first set temperature value, and the refrigerant temperature is within a set temperature value range, the indoor unit is determined to be in a communication fault. If the temperature of the refrigerant in the heat exchanger of the indoor unit is detected to be within the set temperature value range, it is determined that a low-temperature refrigerant exists in the refrigerant, a signal line of the indoor unit can be determined to be connected in a wrong way, the indoor unit with the signal line connected in the wrong way cannot send the control instruction to the corresponding outdoor unit, so that the outdoor unit operates in a refrigeration mode, and the refrigerant enters the heat exchanger of the indoor unit in the standby state.
And after the indoor unit is determined to be in the communication fault, controlling the valve body of the indoor unit to be closed, timing the closing of the valve body of the indoor unit, detecting the ambient temperature and the refrigerant temperature again after the valve body is closed and the second set market is continued, and determining whether the indoor unit is in the fault state again according to the ambient temperature and the refrigerant temperature. If the indoor unit is still in a fault state at the moment, the fault type of the indoor unit can be determined to be a valve leakage fault due to the fact that the valve body is controlled to be closed previously, and if the indoor unit is not in the fault state at the moment, the indoor unit can be determined not to freeze the heat exchanger due to the fact that low-temperature refrigerants exist in the heat exchanger after the valve body of the indoor unit is controlled to be closed. The method and the device can determine whether the indoor unit has a fault state or not and can also accurately determine the fault type of the indoor unit.
In any of the above embodiments, the step of determining that the temperature of the refrigerant is within the set temperature range specifically includes: determining that the temperature of the input refrigerant is less than a second set temperature value; and/or determining that the temperature of the output refrigerant is less than a second set temperature value.
In the embodiment, the temperature of the input refrigerant is determined to be less than a second set temperature value; and/or determining that the temperature of the output refrigerant is less than a second set temperature value, and determining that the temperature of the refrigerant is within a set temperature value range. If one of the input refrigerant temperature and the output refrigerant temperature is less than the second set temperature value, the refrigerant temperature can be determined to be within the numerical range of the set refrigerant temperature. Whether the temperature of the refrigerant is within the set temperature range can be accurately determined according to the input refrigerant temperature collected from the refrigerant inlet of the heat exchanger and the output refrigerant temperature collected from the refrigerant outlet of the heat exchanger. Whether the indoor unit has faults or not is accurately detected.
In any of the above embodiments, the control display device outputs the failure information related to the type of failure.
In the embodiment, the control display device displays the fault state and the fault type of the indoor unit in the form of fault information, so that the prompt effect on workers and users is achieved, the users and the workers can know whether the air conditioner has a fault in time, and the fault can be processed in time according to the fault type.
Example six:
as shown in fig. 1, 6 and 7, a complete embodiment of the present invention provides a method for controlling an indoor unit of an air conditioner:
and (3) starting and operating the outdoor unit for 10min in a refrigeration or dehumidification mode, detecting an indoor unit temperature sensor with the valve body opening degree of 0, and if the temperature is greater than or equal to 17 ℃ in T1 (environmental temperature), continuously keeping for 10 minutes at T2A (heat exchanger inlet temperature) < 0 ℃ or continuously keeping for 10 minutes at T2B (heat exchanger outlet temperature) < 0 ℃, determining that the fault type is a valve body leakage fault, and displaying a valve body leakage fault code by an indoor unit display panel.
T1 is an ambient temperature detected by a first temperature sensor disposed between the fan and the heat exchanger, T2A is an input refrigerant temperature detected by a second temperature sensor disposed at a refrigerant inlet of the heat exchanger, and T2B is an output refrigerant temperature detected by a third temperature sensor disposed at a refrigerant outlet of the heat exchanger.
As shown in fig. 6, in the multi-split air conditioning system, the inner unit 1 is turned on for cooling, the inner units 2 and 3 are in a shutdown state, the opening degrees of the valve bodies of the inner units 2 and 3 are both 0, and if the temperature sensor of the inner unit 2 meets the above conditions, a fault code is displayed.
In an air conditioning system, when T1 (ambient temperature) > 17 ℃, an indoor unit is in a standby state and an indoor unit valve body is in an initial opening degree, the valve body opening degree is larger than 0, if the indoor unit T2A (heat exchanger inlet temperature) < 0 ℃ for 10 minutes or T2B (heat exchanger outlet temperature) < 0 ℃ for 10 minutes is detected, the indoor unit signal line is misconnected, the communication fault is contained, an indoor unit display panel displays fault information of the communication fault, at the moment, the air conditioning indoor unit valve body is closed, and after 10 minutes, T2A or T2B is still smaller than 0 ℃, the indoor unit valve body leakage is indicated, and the display panel alternates between the communication fault and the valve body leakage fault.
T1 is an ambient temperature detected by a first temperature sensor disposed between the fan and the heat exchanger, T2A is an input refrigerant temperature detected by a second temperature sensor disposed at a refrigerant inlet of the heat exchanger, and T2B is an output refrigerant temperature detected by a third temperature sensor disposed at a refrigerant outlet of the heat exchanger.
As shown in fig. 7, in the multi-split air conditioning system, the system signal line of the outer unit 1 is connected to the inner unit 2, the inner unit 3 and the inner unit 4, the refrigerant pipeline is connected to the inner unit 1, the inner unit 2 and the inner unit 3, the system signal line of the outer unit 2 is connected to the inner unit 1, the inner unit 5 and the inner unit 6, and the refrigerant pipeline is connected to the inner unit 4, the inner unit 5 and the inner unit 6. If the indoor unit 1 is in a refrigeration mode, other indoor units are not turned on, the outdoor unit 2 system is turned on, the refrigerant of the outdoor unit 2 flows, the indoor unit 4 signal belongs to the outdoor unit 1 system, the outdoor unit 1 system is in a shutdown state, the valve body of the indoor unit 4 is in an opening degree of the outdoor unit, the indoor unit 4 pipeline is connected to the outdoor unit 1 system, and the refrigerant which is not evaporated enters the indoor unit 4 to cause the indoor unit heat exchanger to freeze, so that the indoor unit drips. At this time, it is determined that the indoor unit is in a communication-type failure.
Example seven:
in one embodiment of the present invention, there is provided an air conditioner including: an indoor unit of an air conditioner as in any of the above embodiments; the off-premises station, off-premises station and indoor set communication connection, the off-premises station includes: and the compressor is connected with the heat exchanger in the indoor unit.
In this embodiment, the present invention provides an air conditioner, which includes an indoor unit and an outdoor unit of the air conditioner in any of the above embodiments. The outdoor unit comprises a compressor, the compressor is connected with the heat exchanger in the indoor unit, and the low-temperature refrigerant can be conveyed into the heat exchanger in the refrigeration mode of the air conditioner.
Since the air conditioner includes the indoor unit of the air conditioner in any of the above embodiments, all the beneficial effects of the indoor unit in any of the above embodiments are achieved, and are not described in detail herein.
Example eight:
in one embodiment of the present invention, there is provided a computer-readable storage medium including:
the computer readable storage medium stores a control program of the indoor unit of the air conditioner, and when the control program of the indoor unit of the air conditioner is executed by the processor, the steps of the control method of the indoor unit of the air conditioner in any one of the embodiments are realized. Therefore, all the beneficial effects of the control method of the indoor unit in any of the above embodiments are achieved, and are not described in detail herein.
In the present invention, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (13)
1. An indoor unit of an air conditioner, comprising:
a heat exchanger;
the valve body is arranged on a pipeline of the heat exchanger;
the temperature sensor assembly is used for collecting the temperature of a refrigerant in the heat exchanger;
the first temperature sensor is used for acquiring the ambient temperature;
the controller is connected with the temperature sensor assembly and the first temperature sensor and used for determining that the indoor unit is in a failure state according to the ambient temperature and the refrigerant temperature and determining the failure type of the indoor unit according to the failure state of the indoor unit and the opening and closing state of the valve body;
wherein the fault type comprises a communication type fault and/or a valve body leakage type fault.
2. The indoor unit of an air conditioner according to claim 1, wherein the step of determining, by the controller, that the indoor unit is in the failure state according to the ambient temperature and the refrigerant temperature specifically includes: determining that the temperature of the refrigerant is in a set temperature value range;
and according to the condition that the environment temperature is greater than a first set temperature value, timing the refrigerant temperature in a set temperature value range for a first set time, and determining that the indoor unit is in a fault state.
3. The indoor unit of an air conditioner according to claim 2, wherein the step of determining the type of the failure of the indoor unit by the controller according to the failure state of the indoor unit and the open/close state of the valve body specifically comprises:
determining the fault type of the indoor unit as the valve body leakage fault according to the closed state of the valve body; or
And determining the fault type of the indoor unit as the communication fault according to the opening state of the valve body.
4. The indoor unit of an air conditioner according to claim 3, wherein the controller is further configured to:
controlling the valve body to close according to the communication fault type of the indoor unit;
and timing the valve body to be in a closed state for a second set time, and returning to execute the step of determining that the indoor unit is in a fault state according to the environment temperature and the refrigerant temperature.
5. The indoor unit of an air conditioner according to any one of claims 2 to 4, wherein the temperature sensor assembly comprises:
the second temperature sensor is used for collecting the temperature of the input refrigerant of the heat exchanger;
the third temperature sensor is used for collecting the temperature of the output refrigerant of the heat exchanger;
the method comprises the following steps that the controller determines that the temperature of the refrigerant is within a set temperature value range, and specifically comprises the following steps:
determining that the temperature of the input refrigerant is less than a second set temperature value; and/or
And determining that the temperature of the output refrigerant is less than a second set temperature value.
6. The indoor unit of an air conditioner according to claim 5, further comprising:
a display device;
the controller is connected with the display device and is also used for controlling the display device to output fault information related to the fault type.
7. A control method of an indoor unit of an air conditioner is characterized by comprising the following steps:
the method comprises the following steps that an indoor unit is in a non-running state, and the indoor unit is determined to be in a fault state according to the ambient temperature and the temperature of a refrigerant;
determining the fault type of the indoor unit according to the fault state of the indoor unit and the opening and closing state of a valve body;
wherein the fault type comprises a communication type fault and/or a valve body leakage type fault.
8. The method of claim 7, wherein the step of determining that the indoor unit is in the failure state according to the ambient temperature and the refrigerant temperature specifically comprises:
determining that the temperature of the refrigerant is in a set temperature value range;
and according to the condition that the environment temperature is greater than a first set temperature value, timing the refrigerant temperature in a set temperature value range for a first set time, and determining that the indoor unit is in a fault state.
9. The method of claim 8, wherein the step of determining the type of the failure of the indoor unit according to the failure state of the indoor unit and the open/close state of the valve body comprises:
determining the fault type of the indoor unit as the valve body leakage fault according to the closed state of the valve body; or
And determining the fault type of the indoor unit as the communication fault according to the opening state of the valve body.
10. The control method of an indoor unit of an air conditioner according to claim 9, further comprising:
controlling the valve body to close according to the communication fault type of the indoor unit;
and timing the valve body to be in a closed state for a second set time, and returning to execute the step of determining that the indoor unit is in a fault state according to the environment temperature and the refrigerant temperature.
11. The method as claimed in any one of claims 8 to 10, wherein the step of determining that the refrigerant temperature is within a set temperature range includes:
determining that the temperature of the input refrigerant is less than a second set temperature value; and/or
And determining that the temperature of the output refrigerant is less than a second set temperature value.
12. An air conditioner, comprising:
an indoor unit of an air conditioner according to any one of claims 1 to 6;
the off-premises station, the off-premises station with indoor set communication connection, the off-premises station includes:
and the compressor is connected with the heat exchanger in the indoor unit.
13. A computer-readable storage medium, comprising:
the computer readable storage medium has stored thereon a control program of an indoor unit of an air conditioner, which when executed by a processor, implements the steps of the control method of the indoor unit of an air conditioner according to any one of claims 7 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010263487.8A CN111425986B (en) | 2020-04-07 | 2020-04-07 | Indoor unit of air conditioner, control method, air conditioner and readable storage medium |
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