CN112013457A - Air conditioner and control method thereof - Google Patents
Air conditioner and control method thereof Download PDFInfo
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- CN112013457A CN112013457A CN201910464962.5A CN201910464962A CN112013457A CN 112013457 A CN112013457 A CN 112013457A CN 201910464962 A CN201910464962 A CN 201910464962A CN 112013457 A CN112013457 A CN 112013457A
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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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
- F24F11/88—Electrical aspects, e.g. circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- 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 relates to the technical field of air conditioning, in particular to a control method of an air conditioner. The invention provides a control method of an air conditioner, wherein the air conditioner comprises an outdoor unit and a plurality of indoor units, and the control method comprises the steps of acquiring the coil temperature of the indoor units and acquiring the indoor environment temperature again under the condition that the air conditioner is in a heating working condition and the indoor environment temperature of the indoor units reaches a target temperature; correcting the indoor environment temperature according to the indoor unit coil temperature and the indoor environment temperature; and controlling the operating parameters of the air conditioner according to the corrected indoor environment temperature. The control method of the air conditioner corrects the indoor environment temperature according to the temperature of the coil pipe of the indoor unit and the indoor environment temperature, so that the indoor environment temperature more accurately reflects the environment temperature of the indoor environment space where the indoor unit is located, the air conditioner can accurately realize the adjustment and control of the indoor environment temperature, and the comfort level of the indoor environment is further improved.
Description
Technical Field
The invention relates to the technical field of air conditioning, in particular to an air conditioner and a control method thereof.
Background
The existing one-driving-multiple air conditioner comprises a plurality of indoor units and an outdoor unit, and because the indoor units are in different indoor environments, the condition that partial indoor units reach the temperature and other indoor units do not reach the temperature often occurs. At present, after the temperature of an indoor unit reaches the temperature, a multi-split air conditioner can control a fan of the indoor unit reaching the temperature to blow weak air and control an air deflector to be in an upward blowing position, and the indoor unit which does not reach the temperature keeps the set air speed and the position of the air deflector of the original fan.
Because the fan that reaches the warm indoor machine often blows weak wind and the aviation baffle is in the position of blowing on, under this condition, reach the warm indoor machine that the fan that reaches the warm indoor machine blown out partly be drawn into the evaporimeter, form the heat radiation circle, lead to reaching the warm indoor machine ambient temperature and continue rising, so, the temperature that the air conditioner detected can not accurately reflect indoor temperature, causes indoor ambient temperature to adjust unreasonablely from this easily, influences indoor environment comfort level. For example, in a room with poor heat insulation performance, although the indoor ambient temperature detected by the air conditioner reaches the target temperature, the actual temperature of the room, especially the actual temperature at a position of 1.6m or below, actually continues to decrease, and in this case, the user feels cold and the comfort level is greatly reduced.
Accordingly, there is a need in the art for a new air conditioner and a control method of the air conditioner to solve the above problems.
Disclosure of Invention
In order to solve the above-mentioned problems in the prior art, that is, the temperature detected by the temperature-reaching indoor unit of the existing one-drive-many air conditioner cannot accurately reflect the indoor environment temperature, so that the indoor environment temperature is not adjusted reasonably, and the indoor environment comfort level is affected, in one aspect, the invention provides a control method of an air conditioner, wherein the air conditioner comprises an outdoor unit and a plurality of indoor units, and the control method comprises the following steps:
under the condition that the air conditioner is in a heating working condition and the indoor environment temperature of the indoor unit reaches a target temperature, acquiring the temperature of a coil pipe of the indoor unit and acquiring the indoor environment temperature again;
correcting the indoor environment temperature according to the indoor unit coil temperature and the indoor environment temperature;
and controlling the operating parameters of the air conditioner according to the corrected indoor environment temperature.
In a preferred technical solution of the above control method, the step of "correcting the indoor environment temperature according to the indoor unit coil temperature and the indoor environment temperature" specifically includes:
calculating the difference between the temperature of the coil of the internal machine and the temperature of the indoor environment;
determining a dynamic compensation value according to the difference value between the temperature of the coil pipe of the internal machine and the indoor environment temperature;
correcting the indoor environment temperature by using the dynamic compensation value;
and a mapping relation is preset between the difference value of the temperature of the coil pipe of the internal machine and the indoor environment temperature and the dynamic compensation value.
In a preferred technical solution of the above control method, "the preset mapping relationship between the difference between the temperature of the indoor unit coil and the indoor environment temperature and the dynamic compensation value" includes:
a plurality of difference intervals are preset for the difference between the temperature of the coil pipe of the internal machine and the indoor environment temperature, and each difference interval corresponds to one dynamic compensation value; or
And calculating the dynamic compensation value according to the difference value between the temperature of the coil pipe of the internal machine and the indoor environment temperature.
In a preferred embodiment of the above control method, the step of "controlling the operation parameter of the air conditioner according to the corrected indoor ambient temperature" includes:
and under the condition that the corrected indoor environment temperature is lower than the target temperature, enabling the fan rotating speed of the indoor unit to be not lower than a rotating speed threshold value.
In the preferable technical scheme of the control method, the value range of the rotating speed threshold is 650r/min to 700 r/min.
In a preferred embodiment of the above control method, the step of "controlling the operation parameter of the air conditioner according to the corrected indoor ambient temperature" includes:
under the condition that the corrected indoor environment temperature is lower than the target temperature, enabling an air deflector of the indoor unit to rotate to a set position;
and a set included angle is formed between the set position and the horizontal plane and is not less than an angle threshold value.
In a preferred technical solution of the above control method, the value range of the angle threshold is-15 ° to 0 °.
In a preferred technical solution of the above control method, the step of acquiring the temperature of the coil of the indoor unit and acquiring the indoor environment temperature again when the air conditioner is in the heating condition and the indoor environment temperature reaches the target temperature specifically includes:
and under the condition that at least one indoor unit in the plurality of indoor units of the air conditioner does not reach the corresponding target temperature, the indoor unit with the indoor environment temperature reaching the corresponding target temperature obtains the temperature of an indoor unit coil.
In a preferred technical solution of the above control method, "determining a dynamic compensation value according to a difference between the temperature of the indoor unit coil and the temperature of the indoor environment" specifically includes: the corrected indoor ambient temperature is calculated by the following formula:
the corrected indoor environment temperature is equal to the indoor environment temperature-dynamic compensation value;
and the difference value between the temperature of the inner machine coil and the indoor environment temperature is opposite to the change trend of the dynamic compensation value.
According to the control method of the air conditioner, the dynamic compensation value is determined according to the temperature of the coil pipe of the inner machine and the indoor environment temperature, and after the indoor environment temperature is compensated through the dynamic compensation value, the indoor environment temperature more accurately reflects the environment temperature of the indoor environment space where the inner machine is located, so that the air conditioner can accurately realize the adjustment and control of the indoor environment temperature, the comfort level of the indoor environment is improved, and the user experience is improved.
In another aspect, the present invention further provides an air conditioner, which includes a controller for executing the control method of the air conditioner. The air conditioner of the invention has all the technical effects of the control method, and the details are not repeated herein.
Drawings
A control method of an air conditioner of the present invention is described below with reference to the accompanying drawings. In the drawings:
fig. 1 is a first flowchart illustrating a control method of an air conditioner according to an embodiment of the present invention;
FIG. 2 is a second flowchart illustrating a control method of an air conditioner according to an embodiment of the present invention;
fig. 3 is a third flowchart illustrating a control method of an air conditioner according to an embodiment of the present invention;
fig. 4 is a fourth flowchart illustrating a control method of an air conditioner according to an embodiment of the present invention.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. For example, although the steps of the method of the present invention are described herein in a particular order, these orders are not limiting, and one skilled in the art may perform the steps in a different order without departing from the underlying principles of the invention.
The air conditioner mainly comprises an outdoor unit and a plurality of indoor units, wherein the indoor units and the outdoor unit form a plurality of refrigerant circulation loops respectively. When the air conditioner is in a heating working condition, when the indoor environment temperature of one or more indoor units reaches a target temperature (hereinafter, the indoor units with the indoor environment temperature reaching the target temperature are all called as temperature reaching indoor units), the air conditioner can control the temperature reaching indoor units to enter a temperature reaching mode, namely, a fan of the temperature reaching indoor units is controlled to keep weak air outlet, and an air deflector is controlled to be positioned at an upward blowing position to supply air upwards, so that the temperature reaching indoor units realize a breeze heating effect, the indoor units with the indoor environment temperature not reaching the target temperature still maintain the previous operation mode, and the air speed and the position of the air deflector are not changed at all.
Because the air deflector of the temperature-reaching internal machine is positioned at the upward blowing position, under the condition, part of hot air blown out by the temperature-reaching internal machine is rolled into the evaporator to form a heat radiation ring, so that the ambient temperature around the temperature-reaching internal machine is continuously raised, and thus, the indoor ambient temperature collected by the temperature-reaching internal machine cannot accurately reflect the real temperature of the indoor space where the temperature-reaching internal machine is positioned.
The invention provides a control method of an air conditioner, aiming at the problems of a temperature-reaching indoor unit. Referring to fig. 1, fig. 1 is a first flowchart illustrating a control method of an air conditioner according to an embodiment of the present invention. As shown in fig. 1, the control method of the present invention includes:
step S20: and acquiring the temperature of the coil of the temperature-reaching indoor unit, and acquiring the indoor environment temperature of the temperature-reaching indoor unit again.
Although the current indoor ambient temperature is obtained when it is determined whether the indoor unit reaches the temperature, since the indoor ambient temperature after reaching the temperature is generally different from the indoor ambient temperature before reaching the temperature, the indoor ambient temperature at which the indoor unit reaches the temperature needs to be obtained again. The indoor environment temperature is the temperature of the indoor space where the temperature indoor unit is located, and can be obtained through the first temperature sensor arranged on the temperature indoor unit, the arrangement position of the first temperature sensor can be arranged according to actual conditions, and if the first temperature sensor can be arranged on the upper portion or the left end portion and the right end portion of the temperature indoor unit. Since the air conditioner is generally installed at an upper area of the indoor space, in particular, the air conditioner is generally installed at a position at least 1.6m above the floor, in which case the temperature detected by the first temperature sensor is the temperature of the upper area of the indoor space where the indoor unit is located. The temperature of the coil of the temperature-reaching internal machine can be acquired by a second temperature sensor arranged on the coil of the temperature-reaching internal machine.
Step S30: and correcting the indoor environment temperature according to the coil temperature of the temperature-reaching indoor unit and the indoor environment temperature.
Step S40: and controlling the operating parameters of the air conditioner according to the corrected indoor environment temperature.
As can be seen from the above steps S20 to S40: because the fan of reaching the warm indoor unit upwards supplies air, the partial hot-blast quilt that blows out can be "drawn into" the evaporimeter for reach the ambient temperature of warm indoor unit and continue to rise, so, reach the indoor ambient temperature that the warm indoor unit detected and also can continue to rise. For a room with a poor heat preservation effect, heat in the indoor space is continuously lost, and partial hot air sent to the indoor space cannot completely compensate the heat loss of the indoor space, so that the actual temperature of the room, particularly the temperature of an area of 1.6m or below, is reduced, and the ambient temperature of the indoor unit is higher than the temperature of the area below the indoor space. As a result, the temperature detected by the first temperature sensor is different from the actual temperature of the indoor space where the air conditioner is located. Through long-time experimental research of the inventor, the difference is related to the coil temperature of the temperature-reaching indoor unit and the indoor environment temperature, and particularly, under the condition that the temperature-reaching indoor unit enters the temperature-reaching mode, due to the continuous influence of the thermal radiation ring, the environment temperature detected by the first temperature sensor is continuously increased, and the indoor environment temperature detected by the first temperature sensor can be deviated from the real environment temperature of the indoor space. Meanwhile, under the influence of the thermal radiation ring, the temperature of the coil of the temperature-reaching internal machine fluctuates, but under the condition that the indoor machine enters a temperature-reaching mode, the opening degree of an electronic expansion valve of the temperature-reaching internal machine and the frequency of a compressor are kept unchanged, the amount of refrigerant entering the coil of the temperature-reaching internal machine is certain, so that the temperature of the coil of the temperature-reaching internal machine only rises within a very small range (within about 1 ℃), the temperature of the coil of the temperature-reaching internal machine can be considered to be basically stable at the moment, and the difference between the temperature of the coil of the temperature-reaching internal machine and the indoor environment temperature detected by the first temperature sensor can be continuously reduced. In view of the above, the temperature of the coil of the temperature-reaching internal machine is compared with the indoor environment temperature, the dynamic compensation value is determined according to the comparison result, and then the indoor environment temperature is corrected according to the dynamic compensation value, so that the corrected indoor environment temperature more accurately reflects the temperature of the lower area of the indoor space where the temperature-reaching internal machine is located, namely the environment temperature which can be sensed by a user, the operation state of the temperature-reaching internal machine is more reasonably controlled according to the corrected indoor environment temperature, and the comfort level of the indoor environment can be improved and the user experience can be improved.
Through further research by the inventor, the dynamic compensation value has an opposite trend to the change of the difference value between the temperature of the coil of the temperature-reaching internal machine and the indoor environment temperature, and specifically, the smaller the difference value between the temperature of the coil of the temperature-reaching internal machine and the indoor environment temperature is, the larger the dynamic compensation amount of the indoor environment temperature is. In view of this, the invention can accurately determine the compensation amount of the indoor environment temperature by calculating the difference between the coil temperature of the temperature-reaching indoor unit and the indoor environment temperature and utilizing the difference, thereby more accurately realizing the correction of the indoor environment temperature.
Specifically, referring to fig. 2, fig. 2 is a flowchart illustrating a control method of an air conditioner according to an embodiment of the present invention. As shown in fig. 2, in a preferred embodiment, step S30 specifically includes the following steps:
step S310: and calculating the difference between the temperature of the coil of the temperature-reaching indoor unit and the indoor environment temperature.
The "difference between the coil temperature of the temperature gaining internal unit and the indoor ambient temperature" is understood to be the value obtained by subtracting the indoor ambient temperature from the coil temperature of the temperature gaining internal unit. Considering that the air conditioner is in the heating working condition, the coil temperature detected by the second temperature sensor is higher than the indoor environment temperature detected by the first temperature sensor, and therefore, the difference value between the coil temperature and the indoor environment temperature is larger than zero.
Step S320: and determining a dynamic compensation value according to the difference value between the temperature of the coil of the temperature-reaching internal machine and the indoor environment temperature.
The determination method of the dynamic compensation value may be various, for example, in a preferred embodiment, a plurality of difference intervals are preset for the difference between the coil temperature of the temperature-controlled indoor unit and the indoor environment temperature, a mapping relationship is preset between the difference intervals and the dynamic compensation value, that is, each difference interval corresponds to one dynamic compensation value, the difference interval in which the difference between the coil temperature and the indoor environment temperature falls is determined, and the value corresponding to the difference interval is the dynamic compensation value.
As a possible example, in the case that the outdoor ambient temperature is 7 ℃ and the outdoor humidity is 6% RH, the difference range between the temperature of the indoor unit coil and the indoor ambient temperature is approximately 15 ℃ to 23 ℃, the difference range is divided into four difference intervals in advance, and a corresponding dynamic compensation value is preset for each difference interval, and the mapping relationship between the difference between the temperature of the indoor unit coil and the indoor ambient temperature and the dynamic compensation value is detailed in table 1 below:
TABLE 1
| Interval of difference | ＜15℃ | 15-17℃ | 18-20℃ | 21-23℃ |
| Dynamic compensation value | 10℃ | 8℃ | 6℃ | 4℃ |
Under the condition that the difference value between the temperature of the coil of the temperature-reaching internal machine and the indoor environment temperature is 19 ℃, the dynamic compensation value of the current indoor environment temperature can be determined to be 6 ℃ according to the mapping relation.
The above is only an example and does not constitute any limitation to the scope of the present invention. It can be understood that, in practical application, the difference range between the temperature of the indoor unit coil and the ambient temperature and the value range of the dynamic compensation value change with the installation environment of the air conditioner, the structure of the air conditioner, the setting parameters and other factors, so that a person skilled in the art needs to reasonably adjust the corresponding relationship between the difference range and the dynamic compensation value according to the practical application scenario.
Of course, the determination method of the dynamic compensation value is not limited to the above example, and those skilled in the art can set the determination method of the dynamic compensation value according to the actual situation. If a calculation formula can be preset between the difference value between the coil temperature and the indoor environment temperature and the dynamic compensation value, the corresponding dynamic compensation value can be obtained by substituting the currently calculated difference value between the coil temperature and the indoor environment temperature into the calculation formula.
Step S330: and correcting the indoor environment temperature by using the dynamic compensation value.
The indoor environment temperature may be corrected in a variety of ways, for example, as an example, the dynamic compensation value determined by the difference between the coil temperature and the indoor environment temperature is a positive value, and the corrected indoor environment temperature, that is, the real indoor space temperature, may be obtained by subtracting the dynamic compensation value from the indoor environment temperature, where the temperature is mainly the environment temperature of the area in the indoor space where the user is located, and the temperature may actually reflect the sensible temperature of the user.
Of course, the correction method of the indoor ambient temperature is not limited to the above example, and a person skilled in the art may set the correction method of the indoor ambient temperature according to actual conditions. If the dynamic compensation value is a temperature coefficient with a value less than 1, the corrected indoor ambient temperature can be obtained by multiplying the ambient temperature by the dynamic compensation value. The skilled person can flexibly set the correction mode of the indoor environment temperature according to the actual situation.
It should be noted that, although the above example is to dynamically compensate the indoor ambient temperature according to the difference between the coil temperature and the indoor ambient temperature, the control method of the present invention is not limited to this, and in practical applications, for example, the dynamic compensation value may also be determined by other comparison manners of the coil temperature of the indoor unit and the indoor ambient temperature to dynamically compensate the indoor ambient temperature. For example, in one possible embodiment, after the indoor ambient temperature and the temperature of the coil of the temperature-reaching internal machine are obtained, the indoor ambient temperature is corrected by calculating a ratio of the indoor ambient temperature to the temperature of the coil of the temperature-reaching internal machine and determining a specific value of the dynamic compensation value according to a mapping relationship between the ratio and the dynamic compensation value.
Referring to fig. 3, fig. 3 is a third flowchart illustrating a control method of an air conditioner according to an embodiment of the present invention. In a preferred embodiment, as shown in fig. 3, step S40 includes the following steps:
step S410: judging whether the corrected indoor environment temperature is less than the target temperature:
if not, go to step S420; if yes, go to step S430.
Step S420: the fan of the temperature-reaching internal machine keeps weak air outlet and the air deflector of the temperature-reaching internal machine keeps an upward position.
The rotating speed of the fan with weak air outlet is generally not more than 650r/min, and the upward position of the air deflector refers to the position of the air deflector forming an angle of-15 degrees with the horizontal plane.
It should be noted that when the air deflector is parallel to the horizontal plane, the included angle between the air deflector and the horizontal plane is 0 °. On the basis that the air deflector is parallel to the horizontal plane, the air deflector rotates upwards, and the included angle between the air deflector and the horizontal plane is a negative value; on the basis that the air deflector is parallel to the horizontal plane, the air deflector rotates downwards, and the included angle between the air deflector and the horizontal plane is a positive value.
Step S430: the rotating speed of the fan of the temperature-reaching internal machine is not less than the rotating speed threshold value, and the air deflector of the temperature-reaching internal machine rotates to a set position.
The value range of the rotating speed threshold is 650r/min to 700 r/min. The set position and the horizontal plane form a set included angle, wherein the value range of the set included angle is-15 degrees to 0 degrees.
It should be noted that, in the case of step S430, specific values of the fan rotation speed and the set included angle between the air deflector and the horizontal plane may be determined in various manners, for example, values of the fan rotation speed and the set included angle may be preset at the factory stage, or may be set by a user through a remote controller or a voice instruction according to actual requirements, or the fan rotation speed may be restored to the fan rotation speed in the operation mode before reaching the temperature, and the air deflector may be restored to the air deflector position in the operation mode before reaching the temperature. A person skilled in the art may set the fan rotation speed and the position of the air deflector in the step S430 according to actual conditions, as long as the fan rotation speed is greater than the weak wind speed in the temperature reaching mode, and the air deflector swings downward relative to the position of the air deflector in the temperature reaching mode.
As can be seen from the above steps S410 to S430: after the air conditioner obtains the corrected indoor environment temperature according to the steps S10 to S40, since the corrected indoor environment temperature better conforms to the actual environment temperature of the indoor space where the user is located, the operation state of the temperature-reaching internal unit of the air conditioner is controlled according to the comparison result of the corrected indoor environment temperature and the target temperature, so that more accurate temperature control can be realized, the comfort level of the indoor environment is improved, and the user experience is improved. Specifically, under the condition that the corrected indoor environment temperature is not less than the target temperature, the heat of hot air sent out by the indoor temperature controller can be considered to make up for the heat loss of the indoor space, the temperature of the indoor space can be kept at the set temperature expected by a user, at the moment, the fan and the air deflector of the indoor unit do not need to be adjusted, the indoor temperature controller can continuously operate to reach the temperature mode, even if the rotating speed of the fan is less than 650r/min, and the air deflector is kept at a position which is less than-15 degrees relative to the horizontal plane, so that the comfort of the user can be guaranteed, and the energy loss can be reduced. And under the condition that the corrected indoor environment temperature is lower than the target temperature, the hot air sent out by the temperature indoor unit can not compensate the heat loss of the indoor space, and at the moment, the rotating speed of a fan of the indoor unit is increased and an air deflector of the indoor unit is rotated downwards so as to improve the heating effect, so that the indoor environment where the user is located can be warmed up, and the comfort level of the user is improved.
It should be noted that the above is only an exemplary description, and in practical applications, in a case that the corrected indoor environment temperature is less than the target temperature set by the user, only the rotation speed of the fan of the temperature-reaching internal machine may be controlled not to be less than the rotation speed threshold, or only the air deflector of the temperature-reaching internal machine may be controlled to rotate to the set position. In addition, the object to be adjusted of the air conditioner is not limited to the air deflector or the fan, but may be other components of the air conditioner, such as an opening degree of an electronic expansion valve corresponding to the indoor unit may be increased. A person skilled in the art can flexibly set an adjustment object and a corresponding adjustment mode of the air conditioner under the condition that the corrected indoor environment temperature is less than the target temperature set by the user according to the actual situation, as long as the heating effect can be improved, and the indoor environment where the user is located can be warmed.
Referring next to fig. 4, fig. 4 is a fourth flowchart illustrating a control method of an air conditioner according to an embodiment of the present invention. In a possible embodiment, as shown in fig. 4, before step S20, the control method of the present invention further includes:
step S110: judging whether the indoor environment temperatures of the indoor units reach the corresponding target temperatures:
if yes, go to step S120; if not, the temperature-reaching internal machine is made to enter the temperature-reaching mode, and steps S20 to S40 are executed.
Step S120: and stopping the outdoor unit, and turning off all the fans of the indoor units after the set time of operation.
The set time is 2 to 5 minutes. Preferably, the set time is 2 minutes.
Through the setting, under the condition that all indoor units of the air conditioner reach the temperature, the outdoor unit is closed to save energy, and the fan of the indoor unit is closed after running for 2 minutes, so that the residual heat in the indoor unit can be discharged, and the phenomenon that the residual heat is accumulated in the indoor unit to influence the service life of internal parts of the indoor unit is avoided.
It should be noted that, when all the indoor units of the air conditioner reach the temperature, the operation state of the air conditioner is not limited to the above example, and may be flexibly set according to actual requirements. In one possible embodiment, when all indoor units of the air conditioner reach the temperature, the compressor of the air conditioner is controlled to operate at a low frequency and all indoor units are controlled to perform the temperature reaching mode, that is, fans of all indoor units keep weak outlet air and the air deflector is controlled to be at the upward blowing position to blow air upward, and at the same time, all indoor units perform the above steps S20 to S40 to achieve more precise temperature control when all indoor units are in the temperature reaching mode.
In summary, the control method of the present invention determines the dynamic compensation value according to the difference between the coil temperature of the temperature-reaching internal machine and the indoor environment temperature by detecting the coil temperature of the temperature-reaching internal machine and the indoor environment temperature, and corrects the indoor environment temperature by the dynamic compensation value, so that the indoor environment temperature more accurately reflects the environment temperature of the indoor space where the temperature-reaching internal machine is located, and the air conditioner can accurately realize the adjustment of the indoor environment temperature. Furthermore, the rotating speed of the fan and the position of the air deflector are selectively adjusted according to the comparison result of the corrected indoor environment temperature and the target temperature, so that the comfort level of the indoor environment is improved, and the user experience is improved.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. A control method of an air conditioner, the air conditioner comprising an outdoor unit and a plurality of indoor units, the control method comprising:
under the condition that the air conditioner is in a heating working condition and the indoor environment temperature of the indoor unit reaches a target temperature, acquiring the temperature of a coil pipe of the indoor unit and acquiring the indoor environment temperature again;
correcting the indoor environment temperature according to the indoor unit coil temperature and the indoor environment temperature;
and controlling the operating parameters of the air conditioner according to the corrected indoor environment temperature.
2. The control method according to claim 1, wherein the step of correcting the indoor environment temperature according to the indoor unit coil temperature and the indoor environment temperature specifically includes:
calculating the difference between the temperature of the coil of the internal machine and the temperature of the indoor environment;
determining a dynamic compensation value according to the difference value between the temperature of the coil pipe of the internal machine and the indoor environment temperature;
correcting the indoor environment temperature by using the dynamic compensation value;
and a mapping relation is preset between the difference value of the temperature of the coil pipe of the internal machine and the indoor environment temperature and the dynamic compensation value.
3. The control method according to claim 2, wherein the step of mapping the difference between the indoor unit coil temperature and the indoor environment temperature with the dynamic compensation value comprises:
a plurality of difference intervals are preset for the difference between the temperature of the coil pipe of the internal machine and the indoor environment temperature, and each difference interval corresponds to one dynamic compensation value; or
And calculating the dynamic compensation value according to the difference value between the temperature of the coil pipe of the internal machine and the indoor environment temperature.
4. The control method according to claim 1, wherein the step of controlling the operation parameter of the air conditioner according to the corrected indoor ambient temperature specifically comprises:
and under the condition that the corrected indoor environment temperature is lower than the target temperature, enabling the fan rotating speed of the indoor unit to be not lower than a rotating speed threshold value.
5. The control method according to claim 4, characterized in that the rotation speed threshold value ranges from 650r/min to 700 r/min.
6. The control method according to claim 1, wherein the step of controlling the operation parameter of the air conditioner according to the corrected indoor ambient temperature specifically comprises:
under the condition that the corrected indoor environment temperature is lower than the target temperature, enabling an air deflector of the indoor unit to rotate to a set position;
and a set included angle is formed between the set position and the horizontal plane and is not less than an angle threshold value.
7. The control method of claim 6, wherein the angle threshold ranges from-15 ° to 0 °.
8. The control method according to claim 1, wherein the step of obtaining the indoor unit coil temperature and obtaining the indoor environment temperature again in a situation where the air conditioner is in a heating condition and the indoor environment temperature reaches the target temperature specifically comprises:
and under the condition that at least one indoor unit in the plurality of indoor units of the air conditioner does not reach the corresponding target temperature, the indoor unit with the indoor environment temperature reaching the corresponding target temperature obtains the temperature of an indoor unit coil.
9. The control method according to claim 2, wherein the "correcting the indoor ambient temperature using the dynamic compensation value" specifically includes:
the corrected indoor ambient temperature is calculated by the following formula:
the corrected indoor environment temperature is equal to the indoor environment temperature-dynamic compensation value;
and the difference value between the temperature of the inner machine coil and the indoor environment temperature is opposite to the change trend of the dynamic compensation value.
10. An air conditioner characterized by comprising a controller for executing the control method of any one of claims 1 to 9.
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