CN111964233B - Opening degree control method and device and air conditioner - Google Patents
Opening degree control method and device and air conditioner Download PDFInfo
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- CN111964233B CN111964233B CN202010884285.5A CN202010884285A CN111964233B CN 111964233 B CN111964233 B CN 111964233B CN 202010884285 A CN202010884285 A CN 202010884285A CN 111964233 B CN111964233 B CN 111964233B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control 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
- F24F11/84—Control 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
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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 opening degree control method and device and an air conditioner. The technical field of air conditioners is related, wherein the opening control method comprises the following steps: when the indoor unit is in a refrigerating operation state, acquiring an indoor temperature value and an exhaust temperature value of a compressor; acquiring an outlet pipe temperature value and an inlet pipe temperature value of the indoor unit; and adjusting the opening degree of the electronic expansion valve according to the indoor temperature value, the exhaust temperature value, the outlet pipe temperature value and the inlet pipe temperature value, so that the exhaust superheat degree of the compressor is maintained at a target value. In the embodiment of the invention, the opening degree of the electronic expansion valve is adjusted by the indoor temperature value, the exhaust temperature value, the outlet pipe temperature value and the inlet pipe temperature value of the heat exchange medium in the indoor unit, so that the exhaust superheat degree of the compressor is maintained at a target value, and the shutdown fault caused by overlarge pressure of the compressor is avoided.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an opening control method and device and an air conditioner.
Background
In order to better adjust the refrigerant conversion efficiency of the existing air conditioning system, an electronic expansion valve is generally adopted to adjust the flowing size and the flowing speed of the refrigerant to ensure the optimal design of a system heat exchange system, but a common mode for adjusting the size of the expansion valve is to periodically adjust based on the target superheat degree, so that the adaptability is poor, the adjusting capability is weak, the conditions of poor heat exchange and influence on the comfort are caused. The compressor is easily oversized and stops.
Disclosure of Invention
The invention solves the problem of how to maintain the exhaust superheat degree of the compressor at a target value and avoid shutdown faults caused by overlarge pressure of the compressor.
In order to solve the above problems, the present invention provides an opening degree control method, an opening degree control device and an air conditioner.
In a first aspect, an embodiment of the present invention provides an opening degree control method for controlling an opening degree of an electronic expansion valve of an indoor unit of an air conditioner, where the opening degree control method includes:
when the indoor unit is in a refrigerating operation state, acquiring an indoor temperature value and an exhaust temperature value of a compressor;
acquiring an outlet pipe temperature value and an inlet pipe temperature value of the indoor unit;
and adjusting the opening degree of the electronic expansion valve according to the indoor temperature value, the exhaust temperature value, the outlet pipe temperature value and the inlet pipe temperature value, so that the exhaust superheat degree of the compressor is maintained at a target value.
In the embodiment of the invention, the opening degree of the electronic expansion valve is adjusted by the indoor temperature value, the exhaust temperature value, the outlet pipe temperature value and the inlet pipe temperature value of the heat exchange medium in the indoor unit, so that the exhaust superheat degree of the compressor is maintained at a target value, and the shutdown fault caused by overlarge pressure of the compressor is avoided.
In an optional embodiment of the present invention, the step of adjusting the opening degree of the electronic expansion valve according to the indoor temperature value, the exhaust temperature value, the outlet pipe temperature value, and the inlet pipe temperature value includes:
calculating the adjusting opening degree of the electronic expansion valve according to the outlet pipe temperature value and the inlet pipe temperature value;
and adjusting the opening of the electronic expansion valve from the current opening to the target opening after adjusting the adjusting opening, so that the superheat degree of the compressor is maintained at the target value.
In an optional embodiment of the present invention, the step of calculating the opening degree of the electronic expansion valve according to the outlet pipe temperature value and the inlet pipe temperature value includes:
calculating an in-pipe temperature difference value between the outlet pipe temperature value and the inlet pipe temperature value every preset time interval;
calculating the intra-tube variation value of the current intra-tube temperature difference value and the previous intra-tube temperature difference value;
and calculating the adjusting opening according to the change value in the pipe and the current temperature difference value in the pipe.
In an optional embodiment of the present invention, the step of calculating the adjustment opening degree according to the change value in the pipe and the current temperature difference value in the pipe includes:
when the change value in the pipe is a fixed value, the adjusting opening degree is increased along with the increase of the temperature difference interval in which the temperature difference value in the pipe is located;
and when the temperature difference value in the pipe is a fixed value, the adjusting opening degree is increased along with the increase of the change interval where the change value in the pipe is located.
In an optional embodiment of the present invention, the step of adjusting the opening degree of the electronic expansion valve according to the indoor temperature value, the exhaust temperature value, the outlet pipe temperature value, and the inlet pipe temperature value further includes:
calculating an indoor temperature difference value according to the indoor temperature value and a set temperature value;
calculating a change opening according to the indoor temperature difference value and the adjustment opening;
and adjusting the changed opening degree of the electronic expansion valve from the current opening degree to the target opening degree, so that the superheat degree of the compressor is maintained at the target value.
In an optional embodiment of the present invention, the step of calculating the change opening degree according to the indoor temperature difference value and the adjustment opening degree includes:
judging whether the indoor temperature difference value is larger than or equal to a first preset temperature difference value or not;
and when the indoor temperature difference value is greater than or equal to a first preset temperature difference value, the adjusting opening degree is the changing opening degree.
When the indoor temperature difference value is smaller than a first preset temperature difference value, judging whether the indoor temperature difference value is larger than or equal to a second preset temperature difference value;
and when the indoor temperature difference value is smaller than the first preset temperature difference value and larger than or equal to the second preset temperature difference value, the change opening degree is equal to the adjustment opening degree minus a first set opening degree.
When the indoor temperature difference value is smaller than a second preset temperature difference value, judging whether the indoor temperature difference value is larger than or equal to a third preset temperature difference value;
and when the indoor temperature difference value is smaller than the second preset temperature difference value and larger than or equal to the third preset temperature difference value, the change opening degree is equal to the adjustment opening degree minus a second set opening degree, wherein the second set opening degree is larger than the first set opening degree.
And when the indoor temperature difference value is smaller than the third preset temperature difference value, controlling the electronic expansion valve to be opened to the minimum opening.
In an optional embodiment of the present invention, the step of adjusting the opening degree of the electronic expansion valve according to the indoor temperature value, the exhaust temperature value, the outlet pipe temperature value, and the inlet pipe temperature value includes:
receiving a discharge temperature value of the compressor;
judging whether the exhaust temperature value is larger than a first preset exhaust value or not;
and when the exhaust temperature value is greater than or equal to the first preset exhaust value, controlling the opening degree of the electronic expansion valve to be larger than a third set opening degree, and then, increasing the opening degree by a fourth set opening degree at preset intervals, wherein the third set opening degree is larger than the fourth set opening degree.
When the exhaust temperature value is smaller than the first preset exhaust value, judging whether the exhaust temperature value is larger than a second preset exhaust value;
and when the exhaust temperature value is smaller than the first preset exhaust value and greater than or equal to the second preset exhaust value, controlling the opening degree of the electronic expansion valve not to be reduced.
When the exhaust temperature value is smaller than the second preset exhaust value, judging whether the exhaust temperature value is larger than a third preset exhaust value;
and when the exhaust temperature value is smaller than the second preset exhaust value and is greater than or equal to the third preset exhaust value, keeping the last control of the electronic expansion valve, and executing the step of controlling the opening degree of the electronic expansion valve not to be reduced when the exhaust temperature value is smaller than the second preset exhaust value and is greater than or equal to the third preset exhaust value for the first time.
When the exhaust temperature value is smaller than the third preset exhaust value, calculating the adjusting opening degree of the electronic expansion valve according to the outlet pipe temperature value and the inlet pipe temperature value; and adjusting the opening of the electronic expansion valve from the current opening to the target opening after adjusting the opening, so that the superheat degree of the compressor is maintained at the target value.
In an optional embodiment of the present invention, the step of adjusting the opening degree of the electronic expansion valve according to the indoor temperature value, the exhaust temperature value, the outlet pipe temperature value, and the inlet pipe temperature value includes:
calculating the exhaust superheat degree according to the exhaust temperature value and the high-pressure saturation temperature value of the compressor;
judging whether the exhaust superheat degree is smaller than a first preset superheat degree or not;
and when the exhaust superheat degree is less than or equal to the first preset superheat degree, controlling the electronic expansion valve to reduce a fifth set opening degree, and reducing a sixth set opening degree at preset time intervals, wherein the fifth set opening degree is greater than the sixth set opening degree.
When the exhaust superheat degree is larger than the first preset superheat degree, judging whether the exhaust superheat degree is smaller than a second preset superheat degree;
and when the exhaust superheat degree is greater than the first preset superheat degree and less than the second preset superheat degree, controlling the opening degree of the electronic expansion valve not to be increased.
When the exhaust superheat degree is larger than the second preset superheat degree, judging whether the exhaust superheat degree is smaller than a third preset superheat degree;
and when the exhaust superheat degree is greater than the second preset superheat degree and less than or equal to the third preset superheat degree, keeping the last control of the electronic expansion valve, and executing the step of controlling the opening degree of the electronic expansion valve not to be increased when the exhaust temperature value is greater than the second preset superheat degree and less than the third preset superheat degree for the first time.
When the exhaust superheat degree is larger than a third preset superheat degree, calculating the adjusting opening degree of the electronic expansion valve according to the outlet pipe temperature value and the inlet pipe temperature value; and adjusting the opening of the electronic expansion valve from the current opening to the target opening after adjusting the opening, so that the superheat degree of the compressor is maintained at the target value.
In a second aspect, an embodiment of the present invention provides an opening degree control device for controlling an opening degree of an electronic expansion valve of an indoor unit of an air conditioner, the opening degree control device including:
the first acquisition module is used for acquiring an indoor temperature value and an exhaust temperature value of the compressor when the indoor unit is in a refrigerating operation state;
the second acquisition module is used for acquiring an outlet pipe temperature value and an inlet pipe temperature value of the indoor unit;
and the opening control module is used for adjusting the opening of the electronic expansion valve according to the indoor temperature value, the exhaust temperature value, the outlet pipe temperature value and the inlet pipe temperature value so as to maintain the exhaust superheat degree of the compressor at a target value.
It should be noted that the beneficial effects of the opening degree control device provided by the second aspect are the same as the effects of the opening degree control method provided by the first aspect, and the details are not repeated here.
In a third aspect, an embodiment of the present invention provides an air conditioner, which includes a controller, where the controller is configured to execute computer instructions to implement the opening degree control method according to the first aspect.
It should be noted that the beneficial effects of the air conditioner provided by the third aspect are the same as the beneficial effects of the opening degree control method provided by the first aspect, and are not described herein again.
Drawings
Fig. 1 is a block diagram of an air conditioner according to an embodiment of the present invention;
fig. 2 is a flowchart of an opening degree control method according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating sub-steps of step S300 of an opening degree control method according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating sub-steps of step S310 of an opening degree control method according to an embodiment of the present invention;
fig. 5 is a flowchart illustrating sub-steps of step S340 of an opening degree control method according to an embodiment of the present invention;
fig. 6 is a flowchart of steps S361-S367 of an opening degree control method according to an embodiment of the present invention;
fig. 7 is a flowchart illustrating steps S371-S378 of an opening degree control method according to an embodiment of the present invention;
fig. 8 is a block diagram of an opening degree control device according to an embodiment of the present invention.
Description of reference numerals:
10-an air conditioner; 11-electronic expansion valve; 12-room temperature detection sensor; 13-an exhaust gas temperature detector; 14-an inlet pipe temperature detector; 15-an outlet pipe temperature detector; 16-a compressor; 17-a controller; 100-opening degree control device; 110-a first acquisition module; 120-a second acquisition module; 130-opening degree control module.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1, an embodiment of the present invention provides an opening degree control method and device for an air conditioner 10, which is mainly used for controlling an opening degree of an electronic expansion valve 11 of an indoor unit.
In this embodiment, the air conditioner 10 includes a controller 17, a compressor 16, an electronic expansion valve 11, a room temperature detection sensor 12, an exhaust temperature detector 13, an inlet pipe temperature detector 14, and an outlet pipe temperature detector 15, and the room temperature detection sensor 12, the exhaust temperature detector 13, the inlet pipe temperature detector 14, and the outlet pipe temperature detector 15 are all connected to the controller 17.
The room temperature detecting sensor 12 is provided indoors for detecting an indoor temperature value and transmitting the detected indoor temperature value to the controller 17.
The exhaust temperature detector 13 is provided at an exhaust pipe of the compressor 16, and detects an exhaust temperature value of the compressor 16 and sends the exhaust temperature value to the controller 17.
The inlet pipe temperature detector 14 is disposed at an inlet of a heat exchange medium of the indoor unit, and configured to detect an inlet pipe temperature value when the heat exchange medium enters the indoor unit, and send the inlet pipe temperature value to the controller 17.
The outlet pipe temperature detector 15 is arranged at an outlet of a heat exchange medium of the indoor unit, and is used for detecting an outlet pipe temperature value when the heat exchange medium flows into the indoor unit and sending the outlet pipe temperature value to the controller 17.
The controller 17 is configured to adjust the opening degree of the electronic expansion valve 11 according to the indoor temperature value, the exhaust temperature value, the pipe inlet temperature value, and the pipe outlet temperature value, so that the exhaust superheat degree of the compressor 16 is maintained at a target value.
Referring to fig. 2, an embodiment of the present invention provides an opening degree control method, which is mainly used for controlling an opening degree of an electronic expansion valve 11 of an indoor unit, and can maintain an exhaust superheat degree of a compressor 16 at a target value, so as to avoid a shutdown fault caused by an excessive pressure of the compressor 16.
The specific steps of the opening degree control method provided by the invention are as follows:
step S100, when the indoor unit is in the cooling operation state, an indoor temperature value and an exhaust temperature value of the compressor 16 are obtained.
In the present embodiment, the indoor temperature value is a temperature value of an indoor environment in which the indoor unit is located, and the discharge temperature value is a temperature value of gas discharged by the compressor 16 in the cooling operation mode.
Step S200, obtaining an outlet pipe temperature value and an inlet pipe temperature value of the indoor unit;
in this embodiment, the inlet pipe temperature value refers to a temperature value when the heat exchange medium enters the indoor unit, and the outlet pipe temperature value refers to a temperature value when the heat exchange medium flows out of the indoor unit.
Step S300, adjusting the opening degree of the electronic expansion valve 11 according to the indoor temperature value, the exhaust temperature value, the outlet pipe temperature value, and the inlet pipe temperature value, so as to maintain the exhaust superheat degree of the compressor 16 at a target value.
In this embodiment, the opening degree of the electronic expansion valve 11 is adjusted by the indoor temperature value, the exhaust temperature value, the outlet pipe temperature value and the inlet pipe temperature value of the heat exchange medium in the indoor unit, so that the exhaust superheat degree of the compressor 16 is maintained at a target value, and a shutdown fault caused by an excessive pressure of the compressor 16 is avoided.
Referring to fig. 3, step S300 includes step S310, step S320, step S330, step S340, step S350, step S361-step S367, and step S371-step S378.
In the present embodiment, for convenience of description, the fuzzy control manner is defined as steps S310 to S320.
Step S310, calculating the adjustment opening degree of the electronic expansion valve 11 according to the outlet pipe temperature value and the inlet pipe temperature value.
In this embodiment, when the refrigeration running state, the exit tube temperature value of heat transfer medium is higher than the income pipe temperature, and when the exit tube temperature value of heat transfer medium and the difference of income pipe temperature value were great, the temperature was great around the heat transfer of heat transfer medium, and indoor environment is great to heat transfer medium's demand, can suitably adjust electronic expansion valve 11's aperture, improves heat transfer medium's flow to stabilize compressor 16's exhaust superheat degree.
When the difference value between the outlet pipe temperature value and the inlet pipe temperature value is small, the difference value indicates that the temperature difference of the heat exchange medium before and after heat exchange is small, the requirement of the indoor environment on the heat exchange medium is small, the opening degree of the electronic expansion valve 11 can be properly adjusted to reduce the flow of the heat exchange medium, and therefore the exhaust superheat degree of the compressor 16 is stabilized.
Referring to fig. 4, step S310 may include step S312, step S314, and step S316.
Step S312, calculating the difference value of the pipe internal temperature of the outlet pipe temperature value and the pipe inlet temperature value every preset time.
In this embodiment, in the cooling mode, the outlet pipe temperature value of the heat exchange medium is greater than the inlet pipe temperature value, and the indoor inlet pipe temperature value is subtracted from the indoor outlet pipe temperature value by the temperature difference value in the pipe.
In this embodiment, the difference in the in-tube temperature is calculated once every preset time.
Step S314, calculating the in-tube variation value of the current in-tube temperature difference value and the previous in-tube temperature difference value;
in this embodiment, a temperature difference value in a pipe at a predetermined interval may be calculated, the current temperature difference value in the pipe may be understood as the last calculated temperature difference value in the pipe, and the previous temperature difference value in the pipe may be understood as the last calculated temperature difference value in the pipe.
In this embodiment, the last value of the temperature difference in the pipe is subtracted from the current value of the temperature difference in the pipe to obtain the value of the change in the pipe.
And step S316, calculating the adjusting opening according to the change value in the pipe and the current temperature difference value in the pipe.
In this embodiment, the adjustment opening degree is calculated from the in-pipe variation value and the current in-pipe temperature difference value, and the electronic expansion valve 11 is controlled to adjust the adjustment opening degree from the current opening degree to the target opening degree, so that the discharge superheat degree of the compressor 16 can be stabilized at the target value.
In this embodiment, the calculation of the adjustment opening degree is related to both the variation value in the pipe and the current difference value of the temperature in the pipe. And after the change value in the pipe and the temperature difference value in the pipe are determined, adjusting the opening degree to be a certain value.
When the change value in the pipe is a fixed value, the adjusting opening degree is increased along with the increase of the temperature difference interval where the temperature difference value in the pipe is located. That is, when the change value in the pipe is a fixed value, the adjustment opening degree in the same temperature difference interval is the same, and the adjustment opening degree is increased along with the increase of the temperature difference interval.
When the temperature difference value in the pipe is a fixed value, the adjusting opening degree is increased along with the increase of the change interval where the change value in the pipe is located. Similarly, when the temperature difference value in the pipe is a constant value, the adjustment opening degree in the same change interval is the same, and the adjustment opening degree increases with the increase of the change interval.
The relationship between the change value in the tube and the current difference value and the adjusting opening degree in the tube is shown in the following table, wherein TSHAt presentThe current difference value of the temperature in the pipe is shown, the delta TSH shows the change value in the pipe, and the data in the table shows the adjustment opening. When the temperature difference value and the change value in the pipe are determined, the temperature difference value and the change value in the pipe can be determinedAnd adjusting the opening according to the difference value of the table. Wherein the unit of adjusting the opening degree is step.
For example: when the change value in the pipe is-4 ℃ and the current difference value of the temperature in the pipe is-6, the opening degree is adjusted to-8 by looking up a table. That is, the opening degree of the electronic expansion valve 11 is decreased by 8 steps based on the current opening degree to obtain the target opening degree.
Similarly, when the change value in the pipe is 2 degrees and the current temperature difference value in the pipe is 4 degrees, looking up the following table shows that the opening is adjusted to be 6, and the target opening is obtained by increasing 6 steps on the basis of the current opening.
After the change value in the pipe and the current temperature difference value in the pipe are determined, the corresponding adjusting opening degree can be inquired according to the following table.
Referring to fig. 3, in step S320, the opening of the electronic expansion valve 11 is adjusted from the current opening to the target opening, so as to maintain the superheat of the compressor 16 at the target value.
In the present embodiment, the adjustment opening degree is calculated, and then the adjustment opening degree is adjusted to the target opening degree on the basis of the current opening degree, so that the discharge superheat degree of the compressor 16 is maintained at the target value.
For example: and when the calculated adjusting opening degree is-3, reducing 3 steps on the basis of the current opening degree to obtain the target opening degree. And when the calculated adjusting opening degree is 6 steps, adding 6 steps on the basis of the current opening degree to obtain the target opening degree.
In this embodiment, the fuzzy control mode is executed once every preset time interval in the process of the indoor unit in the cooling operation.
In the present embodiment, for convenience of description, the steps S330 to S350 are defined as the precise temperature control adjustment mode.
Step S330, calculating the indoor temperature difference value according to the indoor temperature value and the set temperature value.
In this embodiment, the set temperature value may be a target temperature value to be achieved indoors in a cooling operation state, and the indoor temperature value is a current indoor real-time temperature value. And subtracting the set temperature value from the indoor temperature value to obtain a difference value, namely the indoor temperature difference value.
In the present embodiment, the precise temperature control adjustment mode is performed once every preset time interval, that is, the indoor temperature difference value is calculated once every preset time interval.
And step S340, calculating the change opening according to the indoor temperature difference value and the adjustment opening.
In the embodiment, the precise temperature control adjustment mode further controls the electronic expansion valve 11 according to the change of the indoor temperature value based on the fuzzy control mode, so that the control precision of the electronic expansion valve 11 can be improved, and the exhaust superheat value of the compressor 16 can be always kept at the target value.
Referring to fig. 5, step S340 may include step S341, step S342, step S343, step S344, step S345, step S346 and step S347.
In step S341, it is determined whether the indoor temperature difference is greater than or equal to a first preset temperature difference.
In this embodiment, the first predetermined temperature difference value is a larger value, and when the indoor temperature difference value is greater than or equal to the first predetermined temperature difference value, it indicates that the current fuzzy control mode is within a normal adjustment range. When the indoor temperature difference value is smaller than the first preset temperature difference value, it is indicated that the opening degree of the electronic expansion valve 11 needs to be further adjusted according to the current indoor temperature difference value when the current fuzzy control mode deviates from the normal adjustment range.
In the present embodiment, the first preset temperature difference value is generally 1 ℃.
In step S342, when the indoor temperature difference value is smaller than the first preset temperature difference value, it is determined whether the indoor temperature difference value is greater than or equal to a second preset temperature difference value.
When the indoor temperature difference value is smaller than the first preset temperature difference value, whether the indoor temperature difference value is larger than or equal to the second preset temperature difference value is further judged.
In this embodiment, the second predetermined temperature difference value is smaller than the first predetermined temperature difference value. Typically, the first predetermined temperature difference is 0 ℃.
In step S343, when the indoor temperature difference value is smaller than the first preset temperature difference value and greater than or equal to the second preset temperature difference value, the change opening is equal to the adjustment opening minus the first set opening.
In this embodiment, when the indoor temperature difference value is smaller than the first preset temperature difference value and greater than or equal to the second preset temperature difference value, it indicates that the current indoor temperature difference value is relatively small, and the opening degree of the electronic expansion valve 11 may be slightly adjusted on the basis of the fuzzy control mode, so that the opening degree of the electronic expansion valve 11 may be slightly decreased.
In the present embodiment, the first set opening is 5 steps.
In step S344, when the indoor temperature difference is smaller than the second preset temperature difference, it is determined whether the indoor temperature difference is greater than or equal to a third preset temperature difference.
In this embodiment, when the indoor temperature difference value is smaller than the second preset temperature difference value, it is continuously determined whether the indoor temperature difference value is greater than or equal to a third preset temperature difference value. Wherein the third predetermined temperature difference value is less than the second predetermined temperature difference value.
In this embodiment, the third predetermined temperature difference is typically-2 ℃.
In step S345, when the indoor temperature difference value is smaller than the second preset temperature difference value and greater than or equal to the third preset temperature difference value, the change opening is equal to the adjustment opening minus a second set opening, where the second set opening is greater than the first set opening.
In this embodiment, when the indoor temperature difference value is smaller than the second preset temperature difference value and greater than or equal to the third preset temperature difference value, it indicates that the difference between the current indoor temperature difference values is large, and the indoor temperature value is already smaller than the set temperature value, and at this time, the opening degree of the electronic expansion valve 11 needs to be adjusted by a large margin, so that the flow rate of the heat exchange medium is rapidly reduced, and it is ensured that the indoor temperature value can return to the set temperature value.
In step S346, when the indoor temperature difference value is smaller than the third preset temperature difference value, the electronic expansion valve 11 is controlled to be opened to the minimum opening degree.
In this embodiment, generally, the indoor temperature difference value when the indoor unit is stopped is a third preset temperature difference value, and when the indoor temperature value is smaller than the third preset temperature difference value, it indicates that the indoor unit can be currently stopped, and at this time, the opening degree of the electronic expansion valve 11 is controlled to be opened to the minimum opening degree.
In general, the minimum opening is typically 60 steps.
In step S347, when the indoor temperature difference value is greater than or equal to the first preset temperature difference value, the opening degree is adjusted to a change opening degree.
In this embodiment, when the indoor temperature difference value is greater than or equal to the first preset temperature difference value, it indicates that the electronic expansion valve 11 is still within the normal adjustment range, and the fuzzy control mode may be continuously installed to continue the control.
In this embodiment, the opening degree of the electronic expansion valve 11 is controlled by combining the fuzzy control mode and the precise temperature control mode, so that the opening degree of the electronic expansion valve 11 is prevented from being adjusted too much, and the opening degree of the electronic expansion valve 11 is buffered.
Referring to fig. 3, in step S350, the electronic expansion valve 11 is adjusted to the target opening degree after the opening degree is changed from the current opening degree, so as to maintain the superheat degree of the compressor 16 at the target value.
In this embodiment, after the change opening is calculated according to the fuzzy control mode and the precise temperature control mode, the change opening is adjusted to the target opening on the basis of the current opening.
It should be noted that, in this embodiment, the fuzzy control mode and the precise temperature control mode are both executed at preset time intervals, and the two modes may be executed in a staggered manner or simultaneously.
Referring to fig. 6, in the present embodiment, for convenience of description, the exhaust temperature control mode is defined as steps S361 to S367.
Step S361, determining whether the exhaust temperature value is greater than a first preset exhaust value.
In this embodiment, after receiving the exhaust temperature value, it is determined whether the exhaust temperature value is greater than a first preset exhaust value.
In this embodiment, the first preset discharge value is a larger preset value. When the exhaust temperature value is too high, the flow of the heat exchange medium is low, the evaporation is finished in advance without flowing out when the exhaust temperature value passes through the indoor unit, the system is excessive, useless work is done, meanwhile, the temperature of the gaseous heat exchange medium entering the compressor 16 is high, and if the gaseous heat exchange medium is repeatedly circulated, the overload protection of the compressor 16 with too high temperature can be caused.
In the present embodiment, the first preset exhaust value is generally 105 ℃.
And step S362, when the exhaust temperature value is greater than or equal to the first preset exhaust value, controlling the opening degree of the electronic expansion valve 11 to be greater than a third set opening degree, and then, increasing the opening degree by a fourth set opening degree every preset time, wherein the third set opening degree is greater than the fourth set opening degree.
In this embodiment, when the exhaust temperature value is greater than the first preset exhaust value, which indicates that the flow rate of the heat exchange medium in the indoor unit is very low, the opening degree of the electronic expansion valve 11 needs to be increased continuously on the basis of the fuzzy control mode, so as to increase the flow rate of the heat exchange medium in the indoor unit.
In the embodiment, the third set opening degree is firstly increased, and the fourth set opening degree is continuously increased at preset time intervals until the exhaust temperature value is not greater than the first preset exhaust value.
In this embodiment, the third set opening is generally 10 steps, and the fourth set opening is generally 5 steps.
Step S363, when the exhaust temperature value is smaller than the first preset exhaust value, determining whether the exhaust temperature value is greater than a second preset exhaust value.
In this embodiment, when the exhaust temperature value is smaller than a first preset exhaust value, it is continuously determined whether the exhaust temperature value is greater than a second preset exhaust value, where the first preset exhaust value is greater than the second preset exhaust value.
In the present embodiment, the second preset exhaust value is generally 100 ℃.
Step S364, controlling the opening degree of the electronic expansion valve 11 not to be decreased when the exhaust temperature value is smaller than the first preset exhaust value and greater than or equal to the second preset exhaust value.
In this embodiment, when the exhaust temperature value is smaller than the first preset exhaust value and greater than or equal to the second preset exhaust value, it indicates that the current exhaust temperature value is still higher, and in this case, when the opening degree of the electronic expansion valve 11 is calculated in the fuzzy control mode or the precise temperature control mode and needs to be adjusted, the opening degree of the electronic expansion valve 11 does not need to be adjusted.
That is, in the present embodiment, the priority of the control of the electronic expansion valve 11 in the exhaust temperature control mode is higher than the priority of the control of the electronic expansion valve 11 in the fuzzy control mode and the precise temperature control mode.
Step S365, when the exhaust temperature value is smaller than the second preset exhaust value, determining whether the exhaust temperature value is greater than a third preset exhaust value.
In this embodiment, the second preset purge value is greater than the third preset purge value.
In the present embodiment, the third preset exhaust value is typically 95 ℃.
Step S366, when the exhaust temperature value is smaller than the second preset exhaust value and greater than or equal to the third preset exhaust value, maintaining the last control of the electronic expansion valve 11, and when the exhaust temperature value is first smaller than the second preset exhaust value and greater than or equal to the third preset exhaust value, performing the step of controlling the opening degree of the electronic expansion valve 11 to be not smaller.
In the present embodiment, the hold electronic expansion valve 11 controls the opening degree at the time when the previous control indicates that the opening degree of the electronic expansion valve 11 is maintained at the last adjustment. And executing the step S366 when the first exhaust temperature value is smaller than the second preset exhaust value and greater than or equal to the third preset exhaust value.
Step S367, when the exhaust temperature value is less than a third preset exhaust value, calculating an adjustment opening degree of the electronic expansion valve 11 according to the outlet pipe temperature value and the inlet pipe temperature value; and adjusting the opening degree of the electronic expansion valve 11 from the current opening degree to the target opening degree, and maintaining the superheat degree of the compressor 16 at the target value.
In this embodiment, when the exhaust temperature value is smaller than the third preset exhaust temperature value, it is stated that the current flow rate of the heat exchange medium is always performed according to steps S310 to S320. That is, the opening degree of the electronic expansion valve 11 is controlled in accordance with the fuzzy control mode.
Referring to fig. 7, in the present embodiment, for convenience of description, the steps S371 to S378 are defined as a superheat degree control mode.
In step S371, the exhaust superheat degree is calculated according to the exhaust temperature value and the high pressure saturation temperature value of the compressor 16.
And after receiving the exhaust temperature value, calculating the exhaust superheat degree according to the exhaust temperature value and the high-pressure saturation temperature value.
In the present embodiment, the lower the degree of superheat of the exhaust gas, the larger the flow rate of the heat exchange medium, the incomplete evaporation, and the possibility of the refrigerant being sucked into the compressor 16 too much to cause damage to the compressor 16, and therefore, the opening degree of the electronic expansion valve 11 needs to be adjusted in accordance with the degree of superheat of the exhaust gas.
And step 372, judging whether the exhaust superheat degree is less than a first preset superheat degree.
In the present embodiment, the first preset superheat is a small superheat of the exhaust gas, and typically the first preset superheat is 5 ℃.
And step S373, when the exhaust superheat degree is less than or equal to the first preset superheat degree, controlling the electronic expansion valve 11 to reduce a fifth set opening degree, and reducing a sixth set opening degree at preset time intervals, wherein the fifth set opening degree is greater than the sixth set opening degree.
In this embodiment, when the degree of superheat of the exhaust gas is less than or equal to the first preset degree of superheat, it indicates that the current flow rate of the heat exchange medium is too large, and the opening degree of the electronic expansion valve 11 needs to be decreased. When the degree of superheat of the exhaust gas is smaller than the first preset degree of superheat for the first time, the opening degree of the electronic expansion valve 11 is reduced by a relatively large amount, and thereafter the opening degree of the electronic expansion valve 11 can be reduced by a relatively small amount.
In the present embodiment, the fifth set opening is 10 steps, and the sixth set opening is 5 steps.
And step S374, when the exhaust superheat degree is greater than the first preset superheat degree, judging whether the exhaust superheat degree is less than a second preset superheat degree.
In this embodiment, the first predetermined degree of superheat is less than the second predetermined degree of superheat. The second predetermined superheat is 10 ℃.
In step S375, when the exhaust superheat degree is greater than the first preset superheat degree and less than the second preset superheat degree, the opening degree of the electronic expansion valve 11 is controlled not to be increased.
In this embodiment, when the exhaust superheat degree is greater than the first preset superheat degree and less than the second preset superheat degree, it is described that the current exhaust superheat degree is still low, and in this case, when the opening degree of the electronic expansion valve 11 needs to be increased by calculating in the fuzzy control mode or the precise temperature control mode, the opening degree of the electronic expansion valve 11 does not need to be increased at this time.
That is, in the present embodiment, the control priority of the superheat degree control over the electronic expansion valve 11 is higher than the fuzzy control mode and the precise temperature control mode.
In step S376, when the exhaust superheat is greater than the second preset superheat, it is determined whether the exhaust superheat is less than a third preset superheat.
In this embodiment, the second predetermined degree of superheat is less than the third predetermined degree of superheat. The third preset superheat degree is 15 ℃.
Step S377, when the exhaust superheat degree is greater than the second preset superheat degree and less than or equal to the third preset superheat degree, maintaining the last control of the electronic expansion valve 11, and when the exhaust temperature value is first greater than the second preset superheat degree and less than the third preset superheat degree, executing a step of controlling the opening degree of the electronic expansion valve 11 not to be increased.
In the present embodiment, the previous control of the electronic expansion valve 11 being held indicates that the opening degree of the electronic expansion valve 11 is maintained at the opening degree at the time of the last adjustment. And executing the step S375 when the exhaust temperature value is greater than the second preset superheat degree and less than the third preset superheat degree for the first time.
Step 378, when the exhaust superheat degree is greater than a third preset superheat degree, calculating an adjusting opening degree of the electronic expansion valve 11 according to the outlet pipe temperature value and the inlet pipe temperature value; and adjusting the opening degree of the electronic expansion valve 11 from the current opening degree to the target opening degree, and maintaining the superheat degree of the compressor 16 at the target value.
In the present embodiment, when the exhaust superheat degree is greater than the third preset superheat degree, it is described that the current flow rate of the heat exchange medium is always performed according to steps S310 to S320. That is, the opening degree of the electronic expansion valve 11 is controlled in accordance with the fuzzy control mode.
In the present embodiment, the priority of the control of the electronic expansion valve 11 by the exhaust gas temperature control mode is higher than that by the superheat degree control mode than that by the precise temperature control mode. That is, the priority is an exhaust gas temperature control mode, a superheat degree control mode, a precise temperature control mode, and a fuzzy control mode in order from high to low.
In summary, the opening degree control method provided in this embodiment achieves control accuracy of the electronic expansion valve 11 of the indoor unit, and adaptability to different conditions, effectively improves heat exchange efficiency and system stability, and when the temperature difference is too low or the exhaust temperature is too high or the exhaust superheat degree is small, quickly adjusts the opening degree of the expansion valve to achieve system balance, and avoids shutdown failure caused by too large system pressure.
Referring to fig. 8, an opening control device 100 is further provided in an embodiment of the present invention, and is mainly used for controlling an opening of an electronic expansion valve 11 of an indoor unit of an air conditioner 10.
The opening degree control device 100 includes:
the first obtaining module 110 is configured to obtain an indoor temperature value and an exhaust temperature value of the compressor 16 when the indoor unit is in a cooling operation state.
Step S100 of the embodiment of the present invention may be performed by the first obtaining module 110.
The second obtaining module 120 is configured to obtain an outlet pipe temperature value and an inlet pipe temperature value of the indoor unit.
Step S200 of the embodiment of the present invention may be executed by the second obtaining module 120.
The opening control module 130 is configured to adjust the opening of the electronic expansion valve 11 according to the indoor temperature value, the exhaust temperature value, the outlet pipe temperature value, and the inlet pipe temperature value, so that the exhaust superheat degree of the compressor 16 is maintained at a target value.
Step S300 and its sub-steps of the embodiment of the present invention may be performed by the opening degree control module 130.
In the embodiment of the present invention, the controller 17 may be an integrated circuit chip having signal processing capability. The controller 17 may be a general-purpose processor, and may include a Central Processing Unit (CPU), a single chip Microcomputer (MCU), a Micro Controller Unit (MCU), a Complex Programmable Logic Device (CPLD), a Field Programmable Gate Array (FPGA), an Application Specific Integrated Circuit (ASIC), an embedded ARM, and other chips, where the controller 17 may implement or execute the methods, steps, and Logic blocks disclosed in the embodiments of the present invention.
In a possible implementation manner, the air conditioner 10 may further include a memory for storing program instructions executable by the controller 17, for example, the opening degree control device 100 provided in the embodiment of the present application includes at least one of software and firmware stored in the memory. The Memory may be a stand-alone external Memory including, but not limited to, Random Access Memory (RAM), Read Only Memory (ROM), Programmable Read-Only Memory (PROM), Erasable Read-Only Memory (EPROM), electrically Erasable Read-Only Memory (EEPROM). The memory may also be integrated with the controller 17, for example the memory may be integrated with the controller 17 on the same chip.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. An opening degree control method for controlling an opening degree of an electronic expansion valve (11) of an indoor unit of an air conditioner (10), characterized by comprising:
when the indoor unit is in a refrigerating operation state, an indoor temperature value and an exhaust temperature value of a compressor (16) are obtained;
acquiring an outlet pipe temperature value and an inlet pipe temperature value of the indoor unit;
adjusting the opening degree of the electronic expansion valve (11) according to the indoor temperature value, the exhaust temperature value, the outlet pipe temperature value and the inlet pipe temperature value, so that the exhaust superheat degree of a compressor (16) is maintained at a target value;
calculating the exhaust superheat degree according to the exhaust temperature value and the high-pressure saturation temperature value of the compressor (16); the mode of adjusting the opening degree of the electronic expansion valve (11) according to the outlet pipe temperature value and the inlet pipe temperature value is a fuzzy control mode, the mode of adjusting the opening degree of the electronic expansion valve (11) according to the indoor temperature value is a precise temperature control adjustment mode, the mode of adjusting the opening degree of the electronic expansion valve (11) according to the exhaust temperature value is an exhaust temperature control mode, and the mode of adjusting the opening degree of the electronic expansion valve (11) according to the exhaust superheat degree is a superheat degree control mode; the precise temperature control adjusting mode further controls the electronic expansion valve (11) according to the change of the indoor temperature value on the basis of the fuzzy control mode, the priority of the exhaust temperature control mode on the opening degree control of the electronic expansion valve (11) is higher than that of the superheat degree control mode than that of the precise temperature control mode, and the priority is the exhaust temperature control mode, the superheat degree control mode, the precise temperature control mode and the fuzzy control mode from high to low in sequence.
2. The opening degree control method according to claim 1, wherein the step of adjusting the opening degree of the electronic expansion valve (11) according to the indoor temperature value, the exhaust temperature value, the outlet pipe temperature value, and the inlet pipe temperature value includes:
calculating the adjusting opening degree of the electronic expansion valve (11) according to the outlet pipe temperature value and the inlet pipe temperature value;
and adjusting the electronic expansion valve (11) from the current opening degree to the target opening degree after adjusting the adjusting opening degree, so that the superheat degree of the compressor (16) is maintained at the target value.
3. The opening degree control method according to claim 2, wherein the step of calculating the regulated opening degree of the electronic expansion valve (11) according to the outlet pipe temperature value and the inlet pipe temperature value comprises:
calculating an in-pipe temperature difference value between the outlet pipe temperature value and the inlet pipe temperature value every preset time interval;
calculating the intra-tube variation value of the current intra-tube temperature difference value and the previous intra-tube temperature difference value;
and calculating the adjusting opening according to the change value in the pipe and the current temperature difference value in the pipe.
4. The opening degree control method according to claim 3, wherein the step of calculating the adjustment opening degree according to the in-pipe variation value and the current in-pipe temperature difference value comprises:
when the change value in the pipe is a fixed value, the adjusting opening degree is increased along with the increase of the temperature difference interval in which the temperature difference value in the pipe is located;
and when the temperature difference value in the pipe is a fixed value, the adjusting opening degree is increased along with the increase of the change interval where the change value in the pipe is located.
5. The opening degree control method according to claim 2, wherein the step of adjusting the opening degree of the electronic expansion valve (11) according to the indoor temperature value, the exhaust temperature value, the outlet pipe temperature value, and the inlet pipe temperature value further comprises:
calculating an indoor temperature difference value according to the indoor temperature value and a set temperature value;
calculating a change opening according to the indoor temperature difference value and the adjustment opening;
and adjusting the changed opening degree of the electronic expansion valve (11) from the current opening degree to the target opening degree, so that the superheat degree of the compressor (16) is maintained at the target value.
6. The opening degree control method according to claim 5, wherein the step of calculating the change opening degree from the indoor temperature difference value and the adjustment opening degree includes:
judging whether the indoor temperature difference value is larger than or equal to a first preset temperature difference value or not;
when the indoor temperature difference value is larger than or equal to the first preset temperature difference value, the adjusting opening degree is the changing opening degree;
when the indoor temperature difference value is smaller than the first preset temperature difference value, judging whether the indoor temperature difference value is larger than or equal to a second preset temperature difference value;
when the indoor temperature difference value is smaller than the first preset temperature difference value and larger than or equal to the second preset temperature difference value, the change opening degree is equal to the adjustment opening degree minus a first set opening degree;
when the indoor temperature difference value is smaller than the second preset temperature difference value, judging whether the indoor temperature difference value is larger than or equal to a third preset temperature difference value;
when the indoor temperature difference value is smaller than the second preset temperature difference value and larger than or equal to the third preset temperature difference value, the change opening degree is equal to the adjustment opening degree minus a second set opening degree, wherein the second set opening degree is larger than the first set opening degree;
and when the indoor temperature difference value is smaller than the third preset temperature difference value, controlling the electronic expansion valve (11) to be opened to the minimum opening degree.
7. The opening degree control method according to claim 1, wherein the step of adjusting the opening degree of the electronic expansion valve (11) according to the indoor temperature value, the exhaust temperature value, the outlet pipe temperature value, and the inlet pipe temperature value includes:
receiving a discharge temperature value for the compressor (16);
judging whether the exhaust temperature value is larger than a first preset exhaust value or not;
when the exhaust temperature value is greater than or equal to the first preset exhaust value, controlling the opening degree of the electronic expansion valve (11) to be greater than a third set opening degree, and then increasing the opening degree by a fourth set opening degree at preset intervals, wherein the third set opening degree is greater than the fourth set opening degree;
when the exhaust temperature value is smaller than the first preset exhaust value, judging whether the exhaust temperature value is larger than a second preset exhaust value;
when the exhaust temperature value is smaller than the first preset exhaust value and larger than or equal to the second preset exhaust value, controlling the opening degree of the electronic expansion valve (11) not to be reduced;
when the exhaust temperature value is smaller than the second preset exhaust value, judging whether the exhaust temperature value is larger than a third preset exhaust value;
when the exhaust temperature value is smaller than the second preset exhaust value and is greater than or equal to the third preset exhaust value, keeping the last control of the electronic expansion valve (11), and executing the step of controlling the opening degree of the electronic expansion valve (11) not to be reduced when the exhaust temperature value is smaller than the second preset exhaust value and is greater than or equal to the third preset exhaust value for the first time;
when the exhaust temperature value is smaller than the third preset exhaust value, calculating the adjusting opening degree of the electronic expansion valve (11) according to the outlet pipe temperature value and the inlet pipe temperature value; and adjusting the electronic expansion valve (11) from the current opening degree to the target opening degree after adjusting the adjusting opening degree, and maintaining the superheat degree of the compressor (16) at the target value.
8. The opening degree control method according to claim 1, wherein the step of adjusting the opening degree of the electronic expansion valve (11) according to the indoor temperature value, the exhaust temperature value, the outlet pipe temperature value, and the inlet pipe temperature value includes:
judging whether the exhaust superheat degree is smaller than a first preset superheat degree or not;
when the exhaust gas superheat degree is less than or equal to the first preset superheat degree, controlling the electronic expansion valve (11) to reduce a fifth set opening degree, and reducing a sixth set opening degree at preset time intervals, wherein the fifth set opening degree is greater than the sixth set opening degree;
when the exhaust superheat degree is larger than the first preset superheat degree, judging whether the exhaust superheat degree is smaller than a second preset superheat degree;
when the exhaust superheat degree is larger than the first preset superheat degree and smaller than the second preset superheat degree, controlling the opening degree of the electronic expansion valve (11) not to be increased;
when the exhaust superheat degree is larger than the second preset superheat degree, judging whether the exhaust superheat degree is smaller than a third preset superheat degree;
when the exhaust superheat degree is larger than the second preset superheat degree and smaller than or equal to the third preset superheat degree, keeping the last control of the electronic expansion valve (11), and executing the step of controlling the opening degree of the electronic expansion valve (11) not to be increased when the exhaust temperature value is larger than the second preset superheat degree and smaller than the third preset superheat degree for the first time;
when the exhaust superheat degree is larger than the third preset superheat degree, calculating the adjusting opening degree of the electronic expansion valve (11) according to the outlet pipe temperature value and the inlet pipe temperature value; and adjusting the electronic expansion valve (11) from the current opening degree to the target opening degree after adjusting the adjusting opening degree, and maintaining the superheat degree of the compressor (16) at the target value.
9. An opening degree control device for controlling an opening degree of an electronic expansion valve (11) of an indoor unit of an air conditioner (10), the opening degree control device (100) comprising:
the first acquisition module (110) is used for acquiring an indoor temperature value and an exhaust temperature value of the compressor (16) when the indoor unit is in a refrigeration running state;
the second acquisition module (120) is used for acquiring an outlet pipe temperature value and an inlet pipe temperature value of the indoor unit;
the opening control module (130) is used for adjusting the opening of the electronic expansion valve (11) according to the indoor temperature value, the exhaust temperature value, the outlet pipe temperature value and the inlet pipe temperature value, so that the exhaust superheat degree of the compressor (16) is maintained at a target value;
the opening control module (130) is used for calculating the exhaust superheat degree according to the exhaust temperature value and the high-pressure saturation temperature value of the compressor (16); the mode of adjusting the opening degree of the electronic expansion valve (11) according to the outlet pipe temperature value and the inlet pipe temperature value is a fuzzy control mode, the mode of adjusting the opening degree of the electronic expansion valve (11) according to the indoor temperature value is a precise temperature control adjustment mode, the mode of adjusting the opening degree of the electronic expansion valve (11) according to the exhaust temperature value is an exhaust temperature control mode, and the mode of adjusting the opening degree of the electronic expansion valve (11) according to the exhaust superheat degree is a superheat degree control mode; the precise temperature control adjusting mode further controls the electronic expansion valve (11) according to the change of the indoor temperature value on the basis of the fuzzy control mode, the priority of the exhaust temperature control mode on the opening degree control of the electronic expansion valve (11) is higher than that of the superheat degree control mode than that of the precise temperature control mode, and the priority is the exhaust temperature control mode, the superheat degree control mode, the precise temperature control mode and the fuzzy control mode from high to low in sequence.
10. An air conditioner, characterized in that the air conditioner (10) comprises a controller (17), the controller (17) is used for executing computer instructions to realize the opening degree control method according to any one of claims 1-8.
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| CN113432274A (en) * | 2021-06-17 | 2021-09-24 | 中洁环境科技(西安)集团有限公司 | Method and device for adjusting opening of electronic expansion valve and full-quality air conditioner |
| CN114688689B (en) * | 2022-03-31 | 2023-08-11 | 安徽奥克斯智能电气有限公司 | Opening degree adjusting method and device of electronic expansion valve and multi-connected air conditioner |
| CN115111701A (en) * | 2022-07-13 | 2022-09-27 | 广东美的制冷设备有限公司 | Control method of air conditioner, controller, air conditioner and storage medium |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196202A (en) * | 2012-01-09 | 2013-07-10 | 珠海格力电器股份有限公司 | Air conditioner and control method thereof |
| CN103206820A (en) * | 2013-04-27 | 2013-07-17 | 海尔集团公司 | Expansion valve opening controlling method for preventing oscillating of expansion valve |
| CN106352611A (en) * | 2016-08-26 | 2017-01-25 | 芜湖美智空调设备有限公司 | Multi-split air conditioner and control method of electronic expansion valve thereof |
| CN107421177A (en) * | 2017-08-10 | 2017-12-01 | 四川长虹电器股份有限公司 | Three degrees of superheat adjust the air-conditioning and its control method of electric expansion valve |
| JP2018132218A (en) * | 2017-02-13 | 2018-08-23 | 株式会社富士通ゼネラル | Air conditioning device |
| CN109405379A (en) * | 2017-08-17 | 2019-03-01 | 宁波奥克斯电气股份有限公司 | A kind of cooling electronic expansion valve control method |
| CN109506328A (en) * | 2019-01-22 | 2019-03-22 | 广东美的制冷设备有限公司 | The control method and air conditioner of air conditioner electronic expansion valve |
| CN110285618A (en) * | 2019-06-27 | 2019-09-27 | 山东建筑大学 | A kind of frequency-converting control device and control method of heat pump |
| CN110762729A (en) * | 2019-09-23 | 2020-02-07 | 宁波奥克斯电气股份有限公司 | Method for controlling air conditioner and air conditioner |
| CN111076367A (en) * | 2019-12-05 | 2020-04-28 | 珠海格力电器股份有限公司 | Electronic expansion valve opening control method, computer readable storage medium and air conditioner |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103712309A (en) * | 2012-10-04 | 2014-04-09 | Tcl空调器(中山)有限公司 | Air-conditioner refrigerant flow control method |
| CN104566823B (en) * | 2014-12-29 | 2018-03-16 | 广东美的暖通设备有限公司 | The refrigerant control method of multi-connected machine in parallel |
| CN111550904B (en) * | 2020-04-13 | 2021-10-15 | 宁波奥克斯电气股份有限公司 | Electronic expansion valve control method and device and air conditioner |
-
2020
- 2020-08-28 CN CN202010884285.5A patent/CN111964233B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196202A (en) * | 2012-01-09 | 2013-07-10 | 珠海格力电器股份有限公司 | Air conditioner and control method thereof |
| CN103206820A (en) * | 2013-04-27 | 2013-07-17 | 海尔集团公司 | Expansion valve opening controlling method for preventing oscillating of expansion valve |
| CN106352611A (en) * | 2016-08-26 | 2017-01-25 | 芜湖美智空调设备有限公司 | Multi-split air conditioner and control method of electronic expansion valve thereof |
| JP2018132218A (en) * | 2017-02-13 | 2018-08-23 | 株式会社富士通ゼネラル | Air conditioning device |
| CN107421177A (en) * | 2017-08-10 | 2017-12-01 | 四川长虹电器股份有限公司 | Three degrees of superheat adjust the air-conditioning and its control method of electric expansion valve |
| CN109405379A (en) * | 2017-08-17 | 2019-03-01 | 宁波奥克斯电气股份有限公司 | A kind of cooling electronic expansion valve control method |
| CN109506328A (en) * | 2019-01-22 | 2019-03-22 | 广东美的制冷设备有限公司 | The control method and air conditioner of air conditioner electronic expansion valve |
| CN110285618A (en) * | 2019-06-27 | 2019-09-27 | 山东建筑大学 | A kind of frequency-converting control device and control method of heat pump |
| CN110762729A (en) * | 2019-09-23 | 2020-02-07 | 宁波奥克斯电气股份有限公司 | Method for controlling air conditioner and air conditioner |
| CN111076367A (en) * | 2019-12-05 | 2020-04-28 | 珠海格力电器股份有限公司 | Electronic expansion valve opening control method, computer readable storage medium and air conditioner |
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