CN115200195B - Initial opening correction method and device and air conditioner - Google Patents
Initial opening correction method and device and air conditioner Download PDFInfo
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- CN115200195B CN115200195B CN202211035053.8A CN202211035053A CN115200195B CN 115200195 B CN115200195 B CN 115200195B CN 202211035053 A CN202211035053 A CN 202211035053A CN 115200195 B CN115200195 B CN 115200195B
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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
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
- F24F11/67—Switching between heating and cooling modes
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention provides an initial opening correction method and device and an air conditioner, and relates to the technical field of air conditioners. The initial opening correction method is applied to an expansion valve of an indoor unit and comprises the following steps: after the indoor unit is heated and started up under the condition that the expansion valve is at an initial opening, counting the adjustment time length of the first unidirectional adjustment of the expansion valve to obtain the continuous valve adjustment time length; comparing the continuous valve adjusting time length with a preset reference time length to obtain a first comparison result; judging whether the initial opening is reasonable or not according to the first comparison result; and under the condition that the initial opening degree is unreasonable, correcting the initial opening degree according to the regulating direction of the first unidirectional regulation of the expansion valve. The initial opening correction method provided by the invention can correct the initial opening of the expansion valve of the indoor unit, shorten the time for opening or closing the valve for the first time and avoid the generation of refrigerant noise.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an initial opening correction method and device and an air conditioner.
Background
At present, when a multi-split air conditioning system on the market is started up every time of heating, the initial opening degree of an expansion valve configured by each indoor unit is fixed, and after the initialization state is finished, the opening degree of the expansion valve is adjusted subsequently according to the supercooling degree.
The initial opening degree of the internal expansion valve is fixed, the supercooling degree is small under the condition of higher indoor environment temperature, and the internal expansion valve needs to be closed for a long time when being adjusted for the first time based on the initial opening degree, so that refrigerant noise is generated; under the condition of low indoor environment temperature, the supercooling degree is large, and when the internal expansion valve is adjusted for the first time based on the initial opening degree, the valve needs to be opened for a long time, and the noise of the refrigerant is also generated.
Disclosure of Invention
The invention solves the problem that the initial opening degree of an expansion valve of an indoor unit in the existing multi-split air conditioner system is fixed, so that the valve needs to be opened or closed for a long time to be adjusted after the initialization state is finished, and refrigerant noise is generated.
In order to solve the problems, the invention provides an initial opening correction method, which can correct the initial opening of an expansion valve of an indoor unit, shorten the time for opening or closing the valve for the first time and avoid the generation of refrigerant noise.
The embodiment of the invention provides a technical scheme that:
an initial opening correction method is applied to an expansion valve of an indoor unit, and comprises the following steps:
after the indoor unit is heated and started up under the condition that the expansion valve is at an initial opening, counting the adjustment time length of the first unidirectional adjustment of the expansion valve to obtain the continuous valve adjustment time length;
comparing the continuous valve adjusting time length with a preset reference time length to obtain a first comparison result;
judging whether the initial opening is reasonable or not according to the first comparison result;
and under the condition that the initial opening degree is unreasonable, correcting the initial opening degree according to the regulating direction of the first unidirectional regulation of the expansion valve.
According to the initial opening correction method provided by the embodiment, when the first comparison result of the continuous valve adjusting time length and the preset reference time length represents that the continuous valve adjusting time length is too long, the initial opening of the expansion valve is corrected, so that the time length of first closing or opening of the valve after the next heating start-up is shortened, the generation of refrigerant noise is avoided, and the user experience is improved.
In an optional embodiment, the step of determining whether the initial opening is reasonable according to the first comparison result includes:
if the continuous valve adjusting time length is larger than the product of a first correction coefficient and the preset reference time length, judging that the initial opening is unreasonable, wherein the first correction coefficient takes a value between 1.1 and 1.2;
and if the duration of the continuous valve adjustment is smaller than or equal to the product of the first correction coefficient and the preset reference duration, judging that the initial opening is reasonable.
In an alternative embodiment, the step of correcting the initial opening according to the adjustment direction of the first unidirectional adjustment of the expansion valve includes:
if the expansion valve is continuously closed and regulated within the continuous valve regulating time, the initial opening is reduced by a first valve closing coefficient, wherein the first valve closing coefficient takes a value between 0.8 and 0.9;
and if the expansion valve is continuously opened and regulated within the continuous valve regulating time, regulating the initial opening by a second valve closing coefficient by a factor of two, wherein the second valve closing coefficient takes a value between 1.1 and 1.2.
In an optional embodiment, after the step of comparing the continuous valve duration with a preset reference duration to obtain a first comparison result, the initial opening correction method further includes:
judging whether the preset reference time length is reasonable or not according to the first comparison result;
and under the condition that the preset reference time length is unreasonable, correcting the preset reference time length into the continuous valve adjusting time length.
In an optional embodiment, the step of determining whether the preset reference duration is reasonable according to the first comparison result includes:
if the continuous valve adjusting time length is smaller than the product of a second correction coefficient and the preset reference time length, judging that the preset reference time length is unreasonable, wherein the second correction coefficient takes a value between 0.8 and 0.9;
and if the continuous valve adjusting time length is larger than or equal to the product of the second correction coefficient and the preset reference time length, judging that the preset reference time length is reasonable.
In an optional embodiment, before the indoor machine is started up, the initial opening correction method further includes:
acquiring indoor environment temperature;
comparing the indoor environment temperature with a plurality of preset temperatures to obtain a second comparison result;
and determining the initial opening of the expansion valve when the indoor machine is started up according to a second comparison result.
In an optional embodiment, the step of determining the initial opening degree of the expansion valve when the indoor machine is started according to the second comparison result includes:
if the indoor environment temperature is greater than a first preset temperature, the initial opening takes a first preset opening value;
if the indoor environment temperature is greater than a second preset temperature and less than or equal to the first preset temperature, the initial opening takes a second preset opening value, wherein the second preset temperature is less than the first preset temperature;
and if the indoor environment temperature is less than or equal to the second preset temperature, the initial opening takes a third preset opening value.
In an alternative embodiment, the second preset opening value is calculated according to the following formula:
P2＝(Ti2-Tin)/(Ti1-Ti2)*P1+(Ti1-Tin)/(Ti1-Ti2)*P3
wherein P2 characterizes the second preset opening value; ti1 represents the first preset temperature and takes a value within a range of [28 ℃,32 ℃; ti2 represents the second preset temperature and takes a value in a section [13 ℃,15 ℃; tin characterizes the indoor ambient temperature; p1 represents the first preset opening value, and takes a value in a step number interval [80,120 ]; p3 represents the third preset opening value, and takes a value in a step number interval [250,300 ].
The embodiment of the invention also provides an initial opening correction device, which comprises:
the timing module is used for counting the adjustment time length of the first unidirectional adjustment of the expansion valve after the indoor unit heats and starts up under the condition that the expansion valve is at the initial opening degree, so as to obtain the continuous valve adjustment time length;
the comparison module is used for comparing the continuous valve adjusting time length with a preset reference time length to obtain a first comparison result;
the judging module is used for judging whether the initial opening is reasonable or not according to the first comparison result;
and the correction module is used for correcting the initial opening according to the regulating direction of the first unidirectional regulation of the expansion valve under the condition that the initial opening is unreasonable.
According to the initial opening correction device provided by the embodiment, when the first comparison result of the continuous valve adjusting time length and the preset reference time length represents that the continuous valve adjusting time length is too long, the initial opening of the expansion valve is corrected, so that the time length of first closing or opening of the valve after the next heating start-up is shortened, the generation of refrigerant noise is avoided, and the user experience is improved.
The embodiment of the invention also provides an air conditioner, which comprises a controller, wherein the controller is used for executing an initial opening correction method, and the initial opening correction method comprises the following steps: after the indoor unit is heated and started up under the condition that the expansion valve is at an initial opening, counting the adjustment time length of the first unidirectional adjustment of the expansion valve to obtain the continuous valve adjustment time length; comparing the continuous valve adjusting time length with a preset reference time length to obtain a first comparison result; judging whether the initial opening is reasonable or not according to the first comparison result; and under the condition that the initial opening degree is unreasonable, correcting the initial opening degree according to the regulating direction of the first unidirectional regulation of the expansion valve.
According to the air conditioner provided by the embodiment, when the first comparison result of the continuous valve adjusting time length and the preset reference time length represents that the continuous valve adjusting time length is too long, the initial opening degree of the expansion valve is corrected, so that the time length of initial valve closing or valve opening after the next heating start-up is shortened, the generation of refrigerant noise is avoided, and the user experience is improved.
Drawings
Fig. 1 is a flow chart of an initial opening correction method according to an embodiment of the present invention;
FIG. 2 is a block diagram showing a sub-step flow of step S103 in FIG. 1;
FIG. 3 is a block diagram showing a sub-step flow of step S106 in FIG. 1;
FIG. 4 is a block diagram showing a sub-step flow of step S107 in FIG. 1;
FIG. 5 is a block diagram showing a sub-step flow of step S108 of FIG. 1;
fig. 6 is a block diagram of an initial opening correction device according to an embodiment of the present invention.
Reference numerals illustrate:
100-an initial opening correction device; 110-an acquisition module; 120-comparison module; 130-a setting module; 140-a timing module; 150-judging module; 160-correction module.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
Referring to fig. 1, fig. 1 is a flowchart illustrating an initial opening correction method according to the present embodiment, where the initial opening correction method is used for correcting an initial opening of an expansion valve of an indoor unit when a multi-split air conditioning system is started up by heating, and the initial opening correction method may include the following steps:
step S101, obtaining the indoor environment temperature.
In practical application, a temperature sensor is disposed in a room, and the indoor environment temperature is obtained by receiving detection data of the temperature sensor.
Step S102, comparing the indoor environment temperature with a plurality of preset temperatures to obtain a second comparison result.
Step S103, determining the initial opening degree of the expansion valve during indoor mechanical heating startup according to the second comparison result.
Referring to fig. 2, fig. 2 is a block diagram illustrating a sub-step flow of step S103, where step S103 may include:
in sub-step S1031, if the indoor environment temperature is greater than the first preset temperature, the initial opening takes a first preset opening value.
In this embodiment, the first preset temperature takes a value within the interval [28 ℃,32 ℃) i.e. the first preset temperature is higher than the indoor temperature when the national standard maximum operation heats, if the indoor environment temperature is higher than the first preset temperature, the indoor environment temperature is too high, the condensation temperature is high, the supercooling degree is small, the initial opening of the expansion valve is small, and the first preset opening value is taken. In this embodiment, the first preset opening value takes a value in the step number interval [80,120 ].
In sub-step S1032, if the indoor environment temperature is greater than the second preset temperature and less than or equal to the first preset temperature, the initial opening takes a second preset opening value, wherein the second preset temperature is less than the first preset temperature.
When the indoor environment temperature is at the national standard zero load point and the indoor temperature during the maximum operation heating, the indoor environment temperature on the surface is moderate, the condensation temperature is moderate, the supercooling degree is moderate, and the initial opening of the expansion valve is moderate. In this embodiment, the calculation is performed according to the following general expression:
P2＝(Ti2-Tin)/(Ti1-Ti2)*P1+(Ti1-Tin)/(Ti1-Ti2)*P3
wherein P2 represents a second preset opening value; ti1 represents a first preset temperature; ti2 represents a second preset temperature; tin represents the indoor environment temperature; p1 represents a first preset opening value; p3 represents a third preset opening value.
In sub-step S1033, if the indoor environment temperature is less than or equal to the second preset temperature, the initial opening takes a third preset opening value.
The second preset temperature takes a value in a section [13 ℃,15 ℃ and the indoor environment temperature is lower than the second preset temperature, namely lower than the national standard zero load point, which indicates that the indoor environment temperature is low, the condensation temperature is low, the supercooling degree is high, the initial opening of the expansion valve is high, and the third preset opening value is taken. In this embodiment, the third preset opening value takes a value in the step number interval [250,300 ].
With continued reference to fig. 1, the initial opening correction method provided in the present embodiment may further include:
step S104, after the indoor unit heats and starts up with the expansion valve at the initial opening, counting the adjustment duration of the first unidirectional adjustment of the expansion valve, and obtaining the duration of continuous valve adjustment.
The indoor unit heats and starts up with the expansion valve under the initial opening degree, one end of the indoor unit is started up and is started up, and the indoor unit carries out first adjustment on the opening degree of the expansion valve according to the supercooling degree. And counting the adjustment time length of the first unidirectional adjustment to obtain the continuous valve adjustment time length. It is understood that unidirectional adjustment refers to adjustment in a direction in which the opening degree decreases continuously or adjustment in a direction in which the opening degree increases continuously.
Step S105, comparing the continuous valve adjusting time length with a preset reference time length to obtain a first comparison result.
And S106, judging whether the initial opening degree is reasonable or not according to the first comparison result.
Referring to fig. 3, fig. 3 is a block diagram illustrating a sub-step flow of step S106, where step S106 may include:
in sub-step S1061, if the duration of continuous valve adjustment is greater than the product of the first correction coefficient and the preset reference duration, it is determined that the initial opening is unreasonable.
Wherein the first correction factor takes a value between 1.1 and 1.2. When the continuous valve adjusting time length is longer than the product of the first correction coefficient and the preset reference time length, the fact that the initial valve adjusting time length after the initialization operation is over long can lead to refrigerant noise generation is indicated, and therefore the initial opening of the expansion valve is unreasonable.
In sub-step S1062, if the duration of continuous valve adjustment is less than or equal to the product of the first correction coefficient and the preset reference duration, it is determined that the initial opening is reasonable.
When the continuous valve adjusting time length is smaller than or equal to the product of the first correction coefficient and the preset reference time length, the initial valve adjusting time length after the initialization operation is ended is short, the refrigerant noise is not generated, and therefore the initial opening of the expansion valve is judged to be reasonable.
With continued reference to fig. 1, the initial opening correction method provided in the present embodiment may further include:
in step S107, when it is determined that the initial opening degree is not reasonable, the initial opening degree is corrected according to the adjustment direction of the first unidirectional adjustment of the expansion valve.
Referring to fig. 4, fig. 4 is a block diagram illustrating a sub-step flow of step S107, where step S107 may include:
and substep S1071, if the expansion valve is continuously closed and regulated within the continuous valve regulating time period, the initial opening is reduced by a first valve closing coefficient, wherein the first valve closing coefficient takes a value between 0.8 and 0.9.
In the duration of continuous valve adjustment, the opening of the expansion valve is always reduced, and the initial opening of the surface is overlarge, so that the initial opening needs to be reduced, and the duration of first valve adjustment in the next heating start-up is shortened.
And substep S1072, if the expansion valve is continuously opened and regulated within the continuous valve regulating time period, the initial opening degree is regulated by a second valve closing coefficient which takes a value between 1.1 and 1.2.
In the continuous valve adjusting time period, the opening of the expansion valve is always increased, and the initial opening of the surface is too small, so that the initial opening is required to be adjusted and enlarged, and the first valve adjusting time period in the next heating start-up is shortened.
With continued reference to fig. 1, the initial opening correction method provided in the present embodiment may further include:
step S108, judging whether the preset reference time length is reasonable or not according to the first comparison result.
Referring to fig. 5, fig. 5 is a block diagram illustrating a sub-step flow of step S108, where step S108 may include:
and S1081, if the continuous valve adjusting time period is smaller than the product of the second correction coefficient and the preset reference time period, judging that the preset reference time period is unreasonable, wherein the second correction coefficient takes a value between 0.8 and 0.9.
In fact, the preset reference time length used as a reference after each heating start-up is determined by the continuous valve adjusting time length of the last heating operation, so that each heating start-up is based on the optimized lifting under the previous heating start-up operation.
And S1082, if the continuous valve adjusting time length is greater than or equal to the product of the second correction coefficient and the preset reference time length, judging that the preset reference time length is reasonable.
If the continuous valve adjusting time length is greater than or equal to the preset reference time length, the next preset reference time length is kept to be the preset reference time length of the time, and correction accuracy is prevented from being reduced.
With continued reference to fig. 1, the initial opening correction method provided in the present embodiment may further include:
step S109, when the preset reference time length is not reasonable, correcting the preset reference time length into the continuous valve adjusting time length.
If the duration of the continuous valve adjustment is shorter than the preset reference duration, the preset reference duration of the next time is modified into the duration of the continuous valve adjustment, so that the correction of the initial opening of the expansion valve of the next time can be more accurate.
Referring to fig. 6, the present embodiment further provides an initial opening correction device 100, and fig. 6 is a block diagram of the initial opening correction device 100. The initial opening correction device 100 is used for correcting an initial opening of an expansion valve of an indoor unit of a multi-split air conditioning system during heating and starting, and comprises an acquisition module 110, a comparison module 120, a setting module 130, a timing module 140, a judging module 150 and a correction module 160.
The acquisition module 110 is configured to execute step S101 of the foregoing initial opening correction method, and is configured to acquire an indoor environment temperature.
The comparison module 120 is configured to perform the steps S102 and S105 of the foregoing initial opening correction method, and is configured to compare the duration of the continuous valve adjustment with a preset reference duration to obtain a first comparison result, and to compare the indoor environment temperature with a plurality of preset temperatures to obtain a second comparison result.
The setting module 130 is configured to execute the step S103 and related sub-steps of the initial opening correction method, and determine the initial opening of the expansion valve during indoor machine warm-up according to the second comparison result.
The timing module 140 is configured to execute the step S104 of the initial opening correction method, and is configured to count an adjustment duration of the first unidirectional adjustment of the expansion valve after the indoor unit is heated and started with the expansion valve at the initial opening, so as to obtain a duration of the continuous adjustment.
The judging module 150 is configured to execute the steps S106 and S108 of the initial opening correction method and related sub-steps, and is configured to judge whether the initial opening and the preset reference time period are reasonable according to the first comparison result.
The correction module 160 is configured to execute the foregoing steps S107 and S109 of the initial opening correction method and related sub-steps, and is configured to correct the initial opening according to the adjustment direction of the first unidirectional adjustment of the expansion valve when it is determined that the initial opening is unreasonable, and is configured to correct the preset reference duration to the continuous valve adjustment duration when it is determined that the preset reference duration is unreasonable.
The present embodiment also provides an air conditioner, which includes a controller for executing the initial opening correction method, that is, the controller is used for executing the steps S101 to S1090 and the sub-steps corresponding to the steps.
In summary, the initial opening correction method, the initial opening correction device 100 and the air conditioner provided in the embodiment can correct the initial opening of the expansion valve of the indoor unit, shorten the first valve opening or closing time, avoid the generation of refrigerant noise, and improve the user experience.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention should be assessed accordingly to that of the appended claims.
Claims (7)
1. An initial opening correction method applied to an expansion valve of an indoor unit, the initial opening correction method comprising:
after the indoor unit is heated and started up under the condition that the expansion valve is at an initial opening, counting the adjustment time length of the first unidirectional adjustment of the expansion valve to obtain the continuous valve adjustment time length;
comparing the continuous valve adjusting time length with a preset reference time length to obtain a first comparison result;
judging whether the initial opening is reasonable or not according to the first comparison result;
under the condition that the initial opening degree is unreasonable, correcting the initial opening degree according to the regulating direction of the first unidirectional regulation of the expansion valve;
the step of judging whether the initial opening is reasonable according to the first comparison result comprises the following steps:
if the continuous valve adjusting time length is larger than the product of a first correction coefficient and the preset reference time length, judging that the initial opening is unreasonable, wherein the first correction coefficient takes a value between 1.1 and 1.2;
if the duration of the continuous valve adjustment is smaller than or equal to the product of the first correction coefficient and the preset reference duration, judging that the initial opening is reasonable;
the step of correcting the initial opening according to the adjusting direction of the first unidirectional adjustment of the expansion valve comprises the following steps:
if the expansion valve is continuously closed and regulated within the continuous valve regulating time, the initial opening is reduced by a first valve closing coefficient, wherein the first valve closing coefficient takes a value between 0.8 and 0.9;
and if the expansion valve is continuously opened and regulated within the continuous valve regulating time, regulating the initial opening by a second valve closing coefficient by a factor of two, wherein the second valve closing coefficient takes a value between 1.1 and 1.2.
2. The initial opening correction method according to claim 1, characterized in that, after the step of comparing the continuous valve-adjusting time period with a preset reference time period to obtain a first comparison result, the initial opening correction method further comprises:
judging whether the preset reference time length is reasonable or not according to the first comparison result;
and under the condition that the preset reference time length is unreasonable, correcting the preset reference time length into the continuous valve adjusting time length.
3. The initial opening correction method according to claim 2, wherein the step of judging whether the preset reference time period is reasonable according to the first comparison result comprises:
if the continuous valve adjusting time length is smaller than the product of a second correction coefficient and the preset reference time length, judging that the preset reference time length is unreasonable, wherein the second correction coefficient takes a value between 0.8 and 0.9;
and if the continuous valve adjusting time length is larger than or equal to the product of the second correction coefficient and the preset reference time length, judging that the preset reference time length is reasonable.
4. The initial opening correction method according to claim 1, characterized in that before the indoor machine heating is started, the initial opening correction method further comprises:
acquiring indoor environment temperature;
comparing the indoor environment temperature with a plurality of preset temperatures to obtain a second comparison result;
and determining the initial opening of the expansion valve when the indoor machine is started up according to a second comparison result.
5. The initial opening correction method according to claim 4, wherein the step of determining the initial opening of the expansion valve at the time of the indoor machine warm-up based on the second comparison result includes:
if the indoor environment temperature is greater than a first preset temperature, the initial opening takes a first preset opening value;
if the indoor environment temperature is greater than a second preset temperature and less than or equal to the first preset temperature, the initial opening takes a second preset opening value, wherein the second preset temperature is less than the first preset temperature;
and if the indoor environment temperature is less than or equal to the second preset temperature, the initial opening takes a third preset opening value.
6. An initial opening degree correction device applied to an expansion valve of an indoor unit, characterized in that the initial opening degree correction device (100) includes:
the timing module (140) is used for counting the adjustment time length of the first unidirectional adjustment of the expansion valve after the indoor unit heats and starts up under the condition that the expansion valve is at the initial opening degree, so as to obtain the continuous valve adjustment time length;
the comparison module (120) is used for comparing the continuous valve adjusting time length with a preset reference time length to obtain a first comparison result;
a judging module (150) for judging whether the initial opening is reasonable according to the first comparison result;
the correction module (160) is used for correcting the initial opening according to the adjusting direction of the first unidirectional adjustment of the expansion valve under the condition that the initial opening is unreasonable;
the judging module (150) is further configured to judge that the initial opening is unreasonable when the continuous valve adjustment time period is longer than a product of a first correction coefficient and the preset reference time period, where the first correction coefficient takes a value between 1.1 and 1.2; and is used for judging that the initial opening is reasonable under the condition that the duration of the continuous valve adjustment is smaller than or equal to the product of the first correction coefficient and the preset reference duration;
the correction module (160) is further configured to reduce the initial opening by a first valve closing coefficient by a factor when the expansion valve is continuously closed and adjusted within the continuous valve adjustment time period, where the first valve closing coefficient takes a value between 0.8 and 0.9; and the expansion valve is used for adjusting the initial opening by a second valve closing coefficient by times under the condition that the expansion valve is continuously opened and adjusted within the continuous valve adjusting time, wherein the second valve closing coefficient takes a value between 1.1 and 1.2.
7. An air conditioner comprising a controller for executing the initial opening correction method according to any one of claims 1 to 5.
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| CN202211035053.8A CN115200195B (en) | 2022-08-26 | 2022-08-26 | Initial opening correction method and device and air conditioner |
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| CN202211035053.8A CN115200195B (en) | 2022-08-26 | 2022-08-26 | Initial opening correction method and device and air conditioner |
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| CN115200195B true CN115200195B (en) | 2023-07-18 |
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| CN115789908A (en) * | 2022-11-15 | 2023-03-14 | 宁波奥克斯电气股份有限公司 | Expansion valve opening degree control method and device of air conditioner and multi-connected air conditioner |
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