CN110779160B - Operation control method and device, air conditioner and storage medium - Google Patents

Operation control method and device, air conditioner and storage medium Download PDF

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Publication number
CN110779160B
CN110779160B CN201911099670.2A CN201911099670A CN110779160B CN 110779160 B CN110779160 B CN 110779160B CN 201911099670 A CN201911099670 A CN 201911099670A CN 110779160 B CN110779160 B CN 110779160B
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Prior art keywords
air conditioner
temperature
mode
detected
frequency
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CN110779160A (en
Inventor
唐亚林
杜顺开
徐振坤
贺杰
毕然
高卓贤
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Midea Group Co Ltd
Guangzhou Hualing Refrigeration Equipment Co Ltd
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Midea Group Co Ltd
Guangzhou Hualing Refrigeration Equipment Co Ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/30Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32Responding to malfunctions or emergencies
    • F24F11/38Failure diagnosis
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • F24F11/65Electronic processing for selecting an operating mode
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86Control 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/10Temperature
    • F24F2110/12Temperature of the outside air

Abstract

The invention provides an operation control method, an operation control device, an air conditioner and a storage medium, wherein the operation control method of the air conditioner comprises the following steps: under an air conditioning mode, detecting that outdoor working condition parameters meet a blockage condition, and determining that a throttling device in the air conditioner is blocked; and controlling the air conditioner to enter a blockage relieving mode, wherein in the blockage relieving mode, the flow direction of a refrigerant of the throttling device is controlled and changed, and the compressor is configured to operate according to the relieved operation frequency. By executing the scheme, the probability of blockage of the throttling device during low-load operation is reduced and the operation reliability of the air conditioner is improved by detecting relevant parameters of outdoor working conditions.

Description

Operation control method and device, air conditioner and storage medium
Technical Field
The present invention relates to the field of air conditioner control, and in particular, to an operation control method, an operation control device, an air conditioner, and a computer-readable storage medium.
Background
The frequency conversion air conditioner adjusts the frequency of the compressor according to different loads, and when the frequency of the compressor changes, the opening degree of a proper expansion valve and other throttling devices needs to be matched, so that the energy efficiency and the reliability of a refrigerating system are guaranteed.
In the related art, whether the expansion valve is blocked is judged by detecting the current of the whole machine, but the following defects exist:
the refrigeration load is smaller, the frequency of the compressor is lower, the current of the whole machine is smaller, and the current change speed is slow when the expansion valve is blocked, so the precision of the current detection mode is lower.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
To this end, it is an object of the invention to propose a new method of operation control.
Another object of the present invention is to provide an operation control device, an air conditioner, and a computer-readable storage medium.
In order to achieve at least one of the above objects, according to a first aspect of the present invention, an operation control method is provided, which specifically includes: under an air conditioning mode, detecting that outdoor working condition parameters meet a blockage condition, and determining that a throttling device in the air conditioner is blocked; and controlling the air conditioner to enter a blockage relieving mode, wherein in the blockage relieving mode, the flow direction of a refrigerant of the throttling device is controlled and changed, and the compressor is configured to operate according to the relieved operation frequency.
In the technical scheme, whether the throttling device is blocked or not is judged by collecting outdoor working condition parameters and setting corresponding detection thresholds, and under the condition that the throttling device is blocked, the flow direction of a refrigerant of the throttling device is changed by controlling and the outdoor compressor is controlled to operate by setting corresponding release operation frequency, so that the blocking phenomenon is relieved.
The change of the flow direction of the refrigerant in the throttling device is realized through a reversing assembly in the air conditioner system, specifically a four-way valve, so that the blockage phenomenon is relieved by changing the flow direction of the refrigerant, and the running power of the compressor is further adjusted in a combined manner, so that the running of the compressor is matched with the outdoor working condition.
In addition, as can be understood by those skilled in the art, the blockage relieving mode is an operation mode for relieving a blockage phenomenon of the throttling device, and the relieving operation frequency is an operation frequency preset for the compressor in the blockage relieving mode defined in the present application.
The air conditioning mode includes a cooling mode, a heating mode, a dehumidifying mode, a humidifying mode, and the like.
Specifically, taking the refrigeration mode as an example, when the refrigeration load is small, the operation frequency of the compressor is low, and the flow rate of the refrigeration system is reduced, the throttle device such as the expansion valve is controlled to reduce the opening degree according to the control logic of the air conditioner, if the expansion valve is in a state of small opening degree for a long time, the blockage is easy to occur, the characteristics of the blockage of the expansion valve are judged by collecting outdoor working condition parameters, and relevant processing is performed when the blockage occurs, so that the operation reliability of the refrigeration system is improved.
In the above technical solution, in the blockage relieving mode, the method further includes: the opening degree of the throttling device is controlled to be increased.
In the technical scheme, the flow direction of the refrigerant of the throttling device is controlled to be changed, the compressor is configured to operate according to the relieved operating frequency, meanwhile, the opening degree of the throttling device can be further controlled to be increased, and the impact on a blocked area is increased by increasing the flow rate of the refrigerant passing through the throttling device, so that the blockage phenomenon is relieved.
In any of the above technical solutions, configuring the compressor to operate according to the mitigation operation frequency specifically includes: and determining the relieving operation frequency according to the outdoor environment temperature so as to control the compressor to operate according to the relieving operation frequency.
In any of the above technical solutions, determining the mitigation operation frequency according to the outdoor environment temperature specifically includes: the air conditioning mode comprises a refrigeration mode, and in the refrigeration mode, if the outdoor environment temperature is detected to be less than a first temperature threshold value, the first frequency value is determined as a release operation frequency; and if the detected outdoor environment temperature is greater than or equal to the first temperature threshold value, determining the second frequency value as the release operation frequency, wherein the first frequency value is greater than the second frequency value.
In any of the above technical solutions, determining the mitigation operation frequency according to the outdoor environment temperature specifically includes: the air conditioning mode comprises a heating mode, and in the heating mode, if the outdoor environment temperature is detected to be less than a second temperature threshold value, a third frequency value is determined as a relieving operation frequency; and if the outdoor environment temperature is detected to be greater than or equal to the second temperature threshold value, determining a fourth frequency value as the release operation frequency, wherein the third frequency value is greater than the fourth frequency value.
In the technical scheme, after the flow direction of a refrigerant of the throttling device is controlled and changed, the running frequency of the compressor is determined according to the outdoor environment temperature, so that the influence on the room temperature when the blockage is relieved is reduced.
Specifically, in the cooling mode, if the flow direction of the refrigerant is changed, it is indicated that the room is heated for a short time, if the outdoor environment temperature is high, the operation frequency of the compressor is appropriately reduced to obtain the second frequency value, and if the outdoor environment temperature is low, the operation frequency of the compressor can be appropriately increased to obtain the first frequency value, so that the blockage phenomenon of the throttling device is reduced while the fluctuation of the room temperature is reduced as much as possible.
In the heating mode, if the flow direction of the refrigerant is changed, the room is heated for a short time, if the outdoor environment temperature is higher, the operation frequency of the compressor is properly reduced to obtain the fourth frequency value, and if the outdoor environment temperature is lower, the operation frequency of the compressor can be properly increased to obtain the third frequency value, so that the blockage phenomenon of the throttling device is relieved while the temperature fluctuation of the room is reduced as much as possible.
In addition, the relationship between the first temperature threshold and the second temperature threshold further satisfies: the second temperature threshold is less than the first temperature threshold.
In any of the above technical solutions, controlling the air conditioner to enter a blockage relieving mode specifically includes: controlling the compressor to stop running and adjusting the throttling device to the maximum opening degree; controlling the reversing assembly to execute reversing operation so as to change the flow direction of the refrigerant; the compressor is restarted and operated according to the relieved operating frequency.
In the technical scheme, if the blockage phenomenon of the throttling device is detected, the compressor can be controlled to stop running to prevent the blockage phenomenon from further worsening, and then the compressor is controlled again to relieve the running frequency according to the action of relieving the blockage of the throttling device after the reversing component is controlled to reverse and the opening degree of the throttling device is controlled to be increased.
In any of the above technical solutions, the method further includes: when detecting that the duration of the blockage relieving mode is greater than or equal to a first time threshold, controlling the air conditioner to recover the air conditioning mode; in the air conditioning mode, if the throttle device is detected to be blocked again, the switching between the air conditioning mode and the blockage relieving mode is repeated, and the blocking times are accumulated; if the detected blocking times are larger than or equal to the times threshold value, controlling the air conditioner to stop and carrying out fault broadcasting; and when the detected blockage times are smaller than the time threshold value, and after the air conditioning mode is re-entered, the air conditioner is controlled to continuously run in the air conditioning mode if the blockage of the throttling device is not detected.
In the technical scheme, according to the above description, in the blockage relieving mode, the refrigerant flows in the reverse direction, the compressor operates according to the relieving operation frequency, after the operation duration reaches or is greater than or equal to the first duration threshold, the opening degree of the throttling device can be considered to be relieved to a certain extent, at this time, the air conditioner can be controlled to be switched from the blockage relieving mode to the air conditioning mode, so that the air conditioner is controlled to continue to execute the operations of cooling or heating and the like required by a user, and the requirements of the user on the room temperature and humidity adjustment are met.
After returning to the previous air conditioning mode, whether the throttling device is blocked or not is continuously detected based on the relation between the outdoor working condition parameters and the corresponding detection threshold values according to the preset detection frequency so as to detect the times of the blocking phenomenon, when the detected blocking times are larger than or equal to the times threshold values, the blocking phenomenon of the throttling device cannot be effectively relieved through the operation under the blocking relieving mode, the air conditioner is controlled to stop at the moment, fault broadcasting is carried out, and the situation that the user adopts other operations to relieve the blocking phenomenon of the throttling device is improved.
Based on the above description of the control flow, it can be understood by those skilled in the art that each time a blockage phenomenon is detected, there is a switch between the blockage relieving mode and the air conditioning mode.
Wherein the first duration threshold is a smaller duration threshold.
In any of the above technical solutions, in the air conditioning mode, detecting that the outdoor operating condition parameter satisfies a blockage condition, and determining that a throttling device in the air conditioner is blocked specifically includes: and if the detected running time is longer than the second time threshold, detecting whether the outdoor working condition parameters meet the blocking condition or not, and determining that the throttling device in the air conditioner is blocked when the detected blocking condition is met.
In any one of the above technical solutions, detecting whether the outdoor working condition parameter satisfies the blocking condition specifically includes: and if the operation frequency of the compressor is detected to be smaller than the frequency detection threshold value and the exhaust temperature of the compressor is detected to be larger than the temperature detection threshold value, determining whether the outdoor working condition parameters meet the blocking condition or not according to the relation between the outdoor environment temperature and the temperature of the outdoor heat exchanger.
In any of the above technical solutions, determining whether the outdoor working condition parameter satisfies the blocking condition according to the relationship between the outdoor environment temperature and the outdoor heat exchanger temperature specifically includes: the air conditioning mode comprises a refrigerating mode and a heating mode, and under the refrigerating mode, if the sum of the outdoor environment temperature and the first temperature difference threshold value is detected to be greater than the temperature of the outdoor heat exchanger, the throttle device is determined to be blocked; in the heating mode, if the difference between the outdoor environment temperature and the first temperature difference threshold value is detected to be larger than the temperature of the outdoor heat exchanger, the throttling device is determined to be blocked.
In the technical scheme, as a specific implementation manner for detecting whether the throttling device is blocked or not, on the premise that the air conditioner operates according to the specified air conditioning mode for a time period greater than or equal to a second time period threshold value, the operating frequency of the compressor is less than a frequency detection threshold value, and the exhaust temperature of the compressor is greater than a temperature detection threshold value, the outdoor environment temperature and the pipe temperature of the outdoor heat exchanger are further detected, so that whether the throttling device is blocked or not is determined according to the relationship between the outdoor environment temperature and the pipe temperature of the outdoor heat exchanger.
Specifically, a first temperature difference threshold value corresponding to the refrigeration mode and a second temperature difference threshold value corresponding to the heating mode are respectively preset, so that when the temperature difference between the pipe temperature of the outdoor heat exchanger and the outdoor environment temperature is detected to be smaller than the first temperature difference threshold value or the temperature difference between the outdoor environment temperature and the pipe temperature of the outdoor heat exchanger is detected to be smaller than the second temperature difference threshold value, the heat exchange abnormity of the outdoor heat exchanger caused by the blockage of the throttling device is all shown, and the blockage phenomenon of the throttling device can be judged at the moment.
The mode of whether above-mentioned detection throttling arrangement blocks up on the one hand, through the detection that combines the operating frequency and the exhaust temperature of compressor, and outdoor operating mode parameters such as outdoor ambient temperature, outdoor heat exchanger temperature, makes to block up and detects and has higher reliability, and on the other hand, does not need additionally to set up the sensor and detects relevant parameter, consequently can not increase the preparation cost of air conditioner.
According to an aspect of the second aspect of the present invention, there is provided an operation control device including: a memory and a processor; a memory for storing program code; a processor configured to execute the steps of the operation control method according to any one of the aspects of the first aspect of the present invention.
According to a third aspect of the present invention, there is provided an air conditioner including the operation control device according to any one of the fourth aspects.
According to an aspect of the fourth aspect of the present invention, there is provided a computer-readable storage medium on which a computer program is stored, the computer program, when executed by a processor, implementing the steps of the operation control method according to any one of the aspects of the first aspect.
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 shows a flow diagram of an operational control method according to an embodiment of the invention;
FIG. 2 shows a flow diagram of an operational control method according to another embodiment of the present invention;
FIG. 3 is a flow chart illustrating an operation control method according to another embodiment of the present invention
Fig. 4 shows a schematic block diagram of an operation control device according to an embodiment of the present invention.
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.
The first embodiment is as follows:
as shown in fig. 1, an operation control method according to an embodiment of the present invention includes:
102, in the air conditioning mode, detecting that the outdoor working condition parameters meet the blockage conditions, and determining that the throttling device in the air conditioner is blocked.
In some embodiments, one possible implementation manner of the step 102 is: and if the detected running time is longer than the second time threshold, detecting whether the outdoor working condition parameters meet the blocking condition or not, and determining that the throttling device in the air conditioner is blocked when the detected blocking condition is met.
Further, whether the outdoor working condition parameter satisfies the jam condition is detected, and the method specifically comprises the following steps: and if the operation frequency of the compressor is detected to be smaller than the frequency detection threshold value and the exhaust temperature of the compressor is detected to be larger than the temperature detection threshold value, determining whether the outdoor working condition parameters meet the blocking condition or not according to the relation between the outdoor environment temperature and the temperature of the outdoor heat exchanger.
Further, according to the relation between the outdoor environment temperature and the outdoor heat exchanger temperature, whether the outdoor working condition parameter meets the blocking condition is determined, and the method specifically comprises the following steps: the air conditioning mode comprises a refrigerating mode and a heating mode, and under the refrigerating mode, if the sum of the outdoor environment temperature and the first temperature difference threshold value is detected to be greater than the temperature of the outdoor heat exchanger, the throttle device is determined to be blocked; in the heating mode, if the difference between the outdoor environment temperature and the first temperature difference threshold value is detected to be larger than the temperature of the outdoor heat exchanger, the throttling device is determined to be blocked.
In this embodiment, as a specific implementation manner of detecting whether the throttling device is blocked, on the premise that the air conditioner operates according to the specified air conditioning mode for a time period greater than or equal to a second time period threshold value, the operating frequency of the compressor is less than a frequency detection threshold value, and the exhaust temperature of the compressor is greater than a temperature detection threshold value, the outdoor ambient temperature and the pipe temperature of the outdoor heat exchanger are further detected, so as to determine whether the throttling device is blocked according to the relationship between the outdoor ambient temperature and the pipe temperature of the outdoor heat exchanger.
Specifically, a first temperature difference threshold value corresponding to the refrigeration mode and a second temperature difference threshold value corresponding to the heating mode are respectively preset, so that when the temperature difference between the pipe temperature of the outdoor heat exchanger and the outdoor environment temperature is detected to be smaller than the first temperature difference threshold value or the temperature difference between the outdoor environment temperature and the pipe temperature of the outdoor heat exchanger is detected to be smaller than the second temperature difference threshold value, the heat exchange abnormity of the outdoor heat exchanger caused by the blockage of the throttling device is all shown, and the blockage phenomenon of the throttling device can be judged at the moment.
The mode of whether above-mentioned detection throttling arrangement blocks up on the one hand, through the detection that combines the operating frequency and the exhaust temperature of compressor, and outdoor operating mode parameters such as outdoor ambient temperature, outdoor heat exchanger temperature, makes to block up and detects and has higher reliability, and on the other hand, does not need additionally to set up the sensor and detects relevant parameter, consequently can not increase the preparation cost of air conditioner.
And 104, controlling the air conditioner to enter a blockage relieving mode, wherein in the blockage relieving mode, controlling and changing the flow direction of a refrigerant of the throttling device, and configuring the compressor to operate according to the operation frequency.
In this embodiment, whether the throttling device is blocked is judged by collecting outdoor working condition parameters and setting corresponding detection thresholds according to the relation between the outdoor working condition parameters and the corresponding detection thresholds, and under the condition that the throttling device is judged to be blocked, the operation of the outdoor compressor is controlled by controlling and changing the refrigerant flow direction of the throttling device and setting corresponding operation-relieving frequency, so as to relieve the blocking phenomenon.
The change of the flow direction of the refrigerant in the throttling device is realized through a reversing assembly in the air conditioner system, specifically a four-way valve, so that the blockage phenomenon is relieved by changing the flow direction of the refrigerant, and the running power of the compressor is further adjusted in a combined manner, so that the running of the compressor is matched with the outdoor working condition.
In addition, as can be understood by those skilled in the art, the blockage relieving mode is an operation mode for relieving a blockage phenomenon of the throttling device, and the relieving operation frequency is an operation frequency preset for the compressor in the blockage relieving mode defined in the present application.
The air conditioning mode includes a cooling mode, a heating mode, a dehumidifying mode, a humidifying mode, and the like.
Specifically, taking the refrigeration mode as an example, when the refrigeration load is small, the operation frequency of the compressor is low, and the flow rate of the refrigeration system is reduced, the throttle device such as the expansion valve is controlled to reduce the opening degree according to the control logic of the air conditioner, if the expansion valve is in a state of small opening degree for a long time, the blockage is easy to occur, the characteristics of the blockage of the expansion valve are judged by collecting outdoor working condition parameters, and relevant processing is performed when the blockage occurs, so that the operation reliability of the refrigeration system is improved.
Further, in the above-described embodiment, the operation performed in the congestion relief mode further includes: the opening degree of the throttling device is controlled to be increased.
In this embodiment, while controlling to change the refrigerant flow direction of the throttling device and configuring the compressor to operate according to the release operation frequency, the opening degree of the throttling device can be further controlled to be increased, and the impact on the blocked area is increased by increasing the refrigerant flow passing through the throttling device, so as to release the blocking phenomenon.
Wherein, the configuration compressor specifically includes according to alleviating the operating frequency operation: and determining the relieving operation frequency according to the outdoor environment temperature so as to control the compressor to operate according to the relieving operation frequency.
In the refrigeration mode, if the outdoor environment temperature is detected to be smaller than a first temperature threshold value, determining a first frequency value as a release operation frequency; and if the detected outdoor environment temperature is greater than or equal to the first temperature threshold value, determining the second frequency value as the release operation frequency, wherein the first frequency value is greater than the second frequency value.
In the heating mode, if the outdoor environment temperature is detected to be smaller than the second temperature threshold, determining a third frequency value as a relieving operation frequency; and if the outdoor environment temperature is detected to be greater than or equal to a second temperature threshold value, determining a fourth frequency value as the release operation frequency, wherein the second temperature threshold value is smaller than the first temperature threshold value, and the third frequency value is greater than the fourth frequency value.
In the embodiment, after the refrigerant flow direction of the throttling device is controlled to be changed, the running frequency of the compressor is determined according to the outdoor environment temperature, so that the influence on the room temperature when the blockage is relieved is reduced.
Specifically, in the cooling mode, if the flow direction of the refrigerant is changed, it is indicated that the room is heated for a short time, if the outdoor environment temperature is high, the operation frequency of the compressor is appropriately reduced to obtain the second frequency value, and if the outdoor environment temperature is low, the operation frequency of the compressor can be appropriately increased to obtain the first frequency value, so that the blockage phenomenon of the throttling device is reduced while the fluctuation of the room temperature is reduced as much as possible.
In the heating mode, if the flow direction of the refrigerant is changed, the room is heated for a short time, if the outdoor environment temperature is higher, the operation frequency of the compressor is properly reduced to obtain the fourth frequency value, and if the outdoor environment temperature is lower, the operation frequency of the compressor can be properly increased to obtain the third frequency value, so that the blockage phenomenon of the throttling device is relieved while the temperature fluctuation of the room is reduced as much as possible.
In any of the above embodiments, controlling the air conditioner to enter the blockage relieving mode specifically includes: controlling the compressor to stop running and adjusting the throttling device to the maximum opening degree; controlling the reversing assembly to execute reversing operation so as to change the flow direction of the refrigerant; the compressor is restarted and operated according to the relieved operating frequency.
In this embodiment, if it is detected that the throttling device is blocked, the compressor may be controlled to stop operating to prevent further deterioration of the blocking phenomenon, and then the compressor may be controlled again to release the blocking of the throttling device according to the release operating frequency after the reversing control component is executed to reverse and control the opening degree of the throttling device to increase.
Further, as can be understood by those skilled in the art, each time the jam is detected, there is a switch between the jam relief mode and the air conditioning mode, and thus the number of times the jam is detected may be further accumulated to increase the reliability of the jam detection.
Specifically, the method further comprises the following steps: when detecting that the duration of the blockage relieving mode is greater than or equal to a first time threshold, controlling the air conditioner to recover the air conditioning mode; in the air-conditioning mode, if the occurrence of clogging in the throttle device is detected again, switching between the air-conditioning mode and the clogging alleviation mode is repeated, and the clogging times are accumulated.
Determining subsequent operations to be performed by the air conditioner based on the detection of the number of jams, including:
and if the detected blocking times are larger than or equal to the times threshold value, controlling the air conditioner to stop and carrying out fault broadcasting.
And when the detected blockage times are smaller than the time threshold value, and after the air conditioning mode is re-entered, the air conditioner is controlled to continuously run in the air conditioning mode if the blockage of the throttling device is not detected.
In this embodiment, as can be seen from the above description, in the blockage relieving mode, the refrigerant flows in the reverse direction, the compressor operates according to the relieving operation frequency, and after the operation duration reaches or is greater than the first duration threshold, it can be considered that the opening degree of the throttling device is relieved to some extent, at this time, the air conditioner can be controlled to switch from the blockage relieving mode to the air conditioning mode, so as to control the air conditioner to continue to perform the operations such as cooling or heating required by the user, and thus meet the requirement of the user for room temperature and humidity regulation.
After returning to the previous air conditioning mode, whether the throttling device is blocked or not is continuously detected based on the relation between the outdoor working condition parameters and the corresponding detection threshold values according to the preset detection frequency so as to detect the times of the blocking phenomenon, when the detected blocking times are larger than or equal to the times threshold values, the blocking phenomenon of the throttling device cannot be effectively relieved through the operation under the blocking relieving mode, the air conditioner is controlled to stop at the moment, fault broadcasting is carried out, and the situation that the user adopts other operations to relieve the blocking phenomenon of the throttling device is improved.
Wherein the first duration threshold is a smaller duration threshold.
Example two:
as shown in fig. 2, in combination with a specific scenario of the command mode, an operation control method according to another embodiment of the present invention includes:
step 202, controlling the air conditioner to operate according to a refrigeration mode, and recording the operation time t 1;
step 204, detecting the frequency F of the compressor, the exhaust temperature Tp, the outdoor temperature T4 and the temperature T3 of the outdoor heat exchanger;
step 206, when T1 >. DELTA.t 1 and F < Fmin, Tp > Tpmax, detecting whether T3< T4 +. DELTA.Tc is true, if the detection result is 'yes', entering step 208, and if the detection result is 'no', entering step 220;
step 208, judging that the expansion valve is blocked, and increasing the fault count N for 1 time;
step 210, detecting whether N < X is satisfied, if the detection result is yes, entering step 212, and if the detection result is no, entering step 214;
step 212, stopping the machine, and reporting a maintenance fault;
step 214, stopping the compressor, adjusting the opening degree of an expansion valve to be maximum, and reversing the four-way valve;
step 216, starting the compressor and recording time t 2;
step 218, stopping the compressor and reversing the four-way valve when t2 is equal to delta t 2;
and step 220, controlling the air conditioner to operate according to the cooling mode.
Where Δ t1 is the second duration threshold, Δ t2 is the first duration threshold, Δ t1 is preferably 20min, and Δ t2 is preferably 10 min.
Δ Tc is a first temperature difference threshold, preferably 0 ℃.
The first temperature threshold may be greater than or equal to 32 ℃ and less than or equal to 36 ℃, preferably 35 ℃.
The corresponding first frequency value is Fc 50Hz, and the corresponding second frequency value is Fc 30 Hz.
Example three:
as shown in fig. 3, in combination with a specific scenario of the command mode, an operation control method according to another embodiment of the present invention includes:
step 302, controlling the air conditioner to operate according to a heating mode, and recording an operation time length t 1;
step 304, detecting the frequency F of the compressor, the exhaust temperature Tp, the outdoor temperature T4 and the temperature T3 of the outdoor heat exchanger;
step 306, when T1 >. DELTA.t 1 and F < Fmin, Tp > Tpmax, detecting whether T3< T4-. DELTA.Th is true, if the detection result is 'YES', entering step 308, and if the detection result is 'NO', entering step 320;
step 308, judging that the expansion valve is blocked, and increasing the fault count N for 1 time;
step 310, detecting whether N < X is satisfied, if the detection result is yes, entering step 312, and if the detection result is no, entering step 314;
step 312, stopping the machine, and reporting a maintenance fault;
step 314, stopping the compressor, adjusting the opening degree of the expansion valve to be maximum, and reversing the four-way valve;
step 316, starting the compressor and recording time t 2;
step 318, stopping the compressor and reversing the four-way valve when t2 is equal to delta t 2;
and step 320, controlling the air conditioner to operate according to the heating mode.
Where Δ t1 is the second duration threshold, Δ t2 is the first duration threshold, Δ t1 is preferably 20min, and Δ t2 is preferably 10 min.
And the delta Th is a second temperature difference threshold value, and is preferably 10 ℃.
The second temperature threshold may be greater than or equal to 8 ℃ and less than or equal to 12 ℃, preferably 10 ℃.
The corresponding third frequency value is Fh of 60Hz and the corresponding second frequency value is Fh of 40 Hz.
Example four:
as shown in fig. 4, the operation control device 40 according to the embodiment of the present invention is characterized by comprising: a memory 402 and a processor 404.
A memory 402 for storing program code; the processor 404 is configured to call a program code to execute the operation control method of the air conditioner according to any of the embodiments.
An air conditioner according to an embodiment of the present invention includes the operation control device 40 described in the above embodiment.
In this embodiment, the air conditioner includes any one of the operation control devices, so that all the beneficial technical effects of the operation control device are achieved, and are not described herein again.
In one embodiment of the present invention, there is provided a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the control method of an air conditioner as set forth in any one of the above.
In this embodiment, the computer program is executed by the processor to implement the steps of the control method of the air conditioner as described in any one of the above embodiments, so that all the beneficial technical effects of the control method of the air conditioner are achieved, and are not described herein again.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to 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 (11)

1. An operation control method of an air conditioner, comprising:
under an air conditioning mode, detecting that outdoor working condition parameters meet a blockage condition, and determining that a throttling device in the air conditioner is blocked;
controlling the air conditioner to enter a blockage relieving mode,
in the blockage relieving mode, the flow direction of a refrigerant of the throttling device is controlled and changed, and a compressor is configured to operate according to the relieving operation frequency;
under the air conditioning mode, detecting that outdoor working condition parameters meet a blockage condition, and determining that a throttling device in the air conditioner is blocked specifically comprises the following steps: if the operating time length is detected to be greater than a second time length threshold value, detecting whether the outdoor working condition parameters meet the blocking condition or not, and determining that a throttling device in the air conditioner is blocked when the blocking condition is detected to be met;
whether the outdoor working condition parameters meet the blocking condition is detected, and the method specifically comprises the following steps: and if the operating frequency of the compressor is detected to be less than a frequency detection threshold value and the exhaust temperature of the compressor is detected to be greater than a temperature detection threshold value, determining whether the outdoor working condition parameter meets the blocking condition or not according to the relation between the outdoor environment temperature and the temperature of the outdoor heat exchanger.
2. The operation control method of an air conditioner according to claim 1, further comprising, in the jam mitigation mode:
controlling to increase the opening degree of the throttling device.
3. The operation control method of the air conditioner according to claim 1, wherein the configuring of the compressor to operate according to the mitigation operation frequency specifically includes:
and determining the relieving operation frequency according to the outdoor environment temperature so as to control the compressor to operate according to the relieving operation frequency.
4. The operation control method of an air conditioner according to claim 3, wherein the determining the mitigation operation frequency according to the outdoor ambient temperature specifically includes:
the air conditioning mode comprises a cooling mode in which a first frequency value is determined as the mitigation operating frequency if it is detected that the outdoor ambient temperature is less than a first temperature threshold;
determining a second frequency value as the mitigation operating frequency if the outdoor ambient temperature is detected to be greater than or equal to the first temperature threshold,
wherein the first frequency value is greater than the second frequency value.
5. The operation control method of an air conditioner according to claim 3, wherein the determining the mitigation operation frequency according to the outdoor ambient temperature specifically includes:
the air conditioning mode comprises a heating mode in which a third frequency value is determined as the mitigation operating frequency if it is detected that the outdoor ambient temperature is less than a second temperature threshold;
determining a fourth frequency value as the mitigation operating frequency if the outdoor ambient temperature is detected to be greater than or equal to the second temperature threshold,
wherein the third frequency value is greater than the fourth frequency value.
6. The operation control method of an air conditioner according to claim 2, wherein the controlling the air conditioner to enter the jam mitigation mode specifically includes:
controlling the compressor to stop running and adjusting the throttling device to the maximum opening degree;
controlling a reversing component to execute reversing operation so as to change the flow direction of the refrigerant;
restarting the compressor and operating according to the mitigation operating frequency.
7. The operation control method of an air conditioner according to claim 2, further comprising:
controlling the air conditioner to recover the air conditioning mode if the duration of the blockage relieving mode is detected to be greater than or equal to a first time threshold;
in the air conditioning mode, if the blockage of the throttling device is detected again, the switching between the air conditioning mode and the blockage relieving mode is repeated, and the blockage times are accumulated;
if the blockage times are detected to be larger than or equal to the time threshold value, controlling the air conditioner to stop and carrying out fault broadcasting;
and when the blockage times are detected to be less than the time threshold value, and after the air conditioning mode is re-entered, the air conditioner is controlled to continuously operate in the air conditioning mode if the blockage of the throttling device is not detected.
8. The operation control method of an air conditioner according to claim 1, wherein the determining whether the outdoor operating condition parameter satisfies the blocking condition according to a relationship between an outdoor ambient temperature and an outdoor heat exchanger temperature specifically includes:
in a refrigeration mode, if the sum of the outdoor environment temperature and a first temperature difference threshold is detected to be greater than the temperature of the outdoor heat exchanger, it is determined that the throttling device is blocked;
in the heating mode, if the difference between the outdoor environment temperature and the first temperature difference threshold is detected to be larger than the temperature of the outdoor heat exchanger, it is determined that the throttling device is blocked.
9. An operation control device of an air conditioner, comprising: a memory and a processor;
the memory for storing program code;
the processor is configured to call the program code to perform the operation control method of the air conditioner according to any one of claims 1 to 8.
10. An air conditioner, comprising:
the operation control device of the air conditioner as claimed in claim 9.
11. A computer-readable storage medium, having an operation control program stored thereon, wherein the operation control program, when executed by a processor, implements the operation control method of an air conditioner according to any one of claims 1 to 8.
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CN114151920B (en) * 2021-11-18 2023-02-10 宁波奥克斯电气股份有限公司 Air conditioner system blockage detection method and device and air conditioner
CN114413425A (en) * 2021-12-20 2022-04-29 青岛海尔空调电子有限公司 Control method and device for air conditioner, air conditioner and storage medium

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