CN107421078B - Method and device for controlling air conditioner and air conditioner - Google Patents
Method and device for controlling air conditioner and air conditioner Download PDFInfo
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- CN107421078B CN107421078B CN201710787105.XA CN201710787105A CN107421078B CN 107421078 B CN107421078 B CN 107421078B CN 201710787105 A CN201710787105 A CN 201710787105A CN 107421078 B CN107421078 B CN 107421078B
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000004378 air conditioning Methods 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 230000008859 change Effects 0.000 claims description 8
- 230000001276 controlling effect Effects 0.000 description 21
- 238000005057 refrigeration Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000007791 dehumidification Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
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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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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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
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Abstract
本发明公开了一种用于控制空调的方法，属于空调技术领域。该方法包括：在空调制冷模式下，采集室内温度t和室内湿度RH；根据所述室内温度t和室内湿度RH判断是否满足条件，如果是，则根据室内温度t和室内湿度RH控制室内风机的转速R，并根据室内风机的转速R调整压缩机的工作频率F。本发明还公开了一种用于控制空调的装置及一种空调。
The invention discloses a method for controlling an air conditioner, which belongs to the technical field of air conditioners. The method includes: collecting indoor temperature t and indoor humidity RH in an air-conditioning cooling mode; judging whether a condition is satisfied according to the indoor temperature t and indoor humidity RH, and if so, controlling the indoor fan's operation according to the indoor temperature t and indoor humidity RH speed R, and adjust the operating frequency F of the compressor according to the speed R of the indoor fan. The invention also discloses a device for controlling the air conditioner and an air conditioner.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a method and a device for controlling an air conditioner and the air conditioner.
Background
The refrigerating capacity of the air conditioner is divided into sensible heat and latent heat, the sensible heat mainly affects the indoor temperature, the latent heat mainly affects the indoor humidity, and therefore both the sensible heat and the latent heat can affect the comfort level of people. How to control the indoor temperature and humidity so as to enable users to have better experience is a problem which is widely concerned at present.
The prior art discloses a time-sharing temperature and humidity separate control method for an air conditioner, which comprises the following steps: judging whether the indoor humidity is higher than the set humidity of the air conditioner; if the humidity is higher than the set humidity of the air conditioner, the air conditioner is driven to dehumidify; if the humidity is not higher than the set humidity of the air conditioner, the air conditioner is driven to refrigerate; if the humidity is higher than the set humidity of the air conditioner, the air conditioner is driven to execute dehumidification, and the method specifically comprises the following steps: if the indoor temperature is higher than the set humidity of the air conditioner, judging whether the indoor temperature is higher than the set temperature of the air conditioner; if the temperature is not higher than the set temperature of the air conditioner, the air conditioner is driven to independently dehumidify; if the indoor temperature is higher than the set temperature of the air conditioner, judging whether the indoor temperature is higher than the set temperature of the air conditioner by t1Degree; wherein t is more than or equal to 1.51Less than or equal to 3; if so, increasing the frequency of a compressor of the air conditioner; if not, firstly reducing the rotating speed of the fan of the air conditioner and then increasing the frequency of the compressor of the air conditioner. This prior art discloses that the temperature and humidity of the room can be maintained by a time-sharing temperature and humidity control method, but this method only discloses that the frequency of the compressor of the air conditioner is increased when it is higher than the set temperature of the air conditioner; if not, firstly reducing the rotating speed of the fan of the air conditioner and then increasing the frequency of the compressor of the air conditioner. Those skilled in the artAccording to the disclosure of the prior art, a more detailed scheme of the compressor frequency adjustment and a scheme of the fan rotational speed adjustment cannot be conceived.
Another method for controlling temperature and humidity is disclosed in the prior art, which discloses the following: b. calculating the running time of the air conditioner in a refrigeration mode, judging whether the working frequency of the compressor needs to be limited or not at present and whether the rotating speed of an indoor fan needs to be adjusted or not according to the following conditions when the running time reaches a preset threshold value: b1. if the difference value between the current indoor temperature and the preset temperature is more than or equal to 2 ℃, the working frequency of the compressor is not limited, and the current rotating speed of the indoor fan is not adjusted; b2. if the difference value between the current indoor temperature and the preset temperature is larger than or equal to 1 ℃ and smaller than 2 ℃, the working frequency of the compressor is not limited, but the rotating speed of the indoor fan is reduced to a gear lower than the rotating speed of the current indoor fan, and the lowest gear is used for running; b3. if the difference value between the current indoor temperature and the preset temperature is less than 1 ℃ and the current indoor relative humidity is more than or equal to 70%, the working frequency of the compressor is not limited, but the rotating speed of the indoor fan is reduced to two gears which are at most lower than the rotating speed of the current indoor fan and the lowest gear is a low-speed gear for operation; b4. and if the difference value between the current indoor temperature and the preset temperature is less than 1 ℃ and the current indoor relative humidity is less than 70%, limiting the working frequency of the compressor, and simultaneously reducing the rotating speed of the indoor fan to two gears which are at most lower than the rotating speed of the current indoor fan and the lowest gear which is a low-speed gear for operation. Although a relatively specific compressor frequency adjustment scheme and a fan rotating speed adjustment scheme are disclosed in the prior art, namely, the frequency limitation is performed on the working frequency or the gear adjustment is performed on the wind speed under a certain condition, the frequency limitation only limits the working frequency of the compressor to a fixed value, and the wind speed is only simply divided into four gears. It can be seen that the adjustment process of the operating frequency and the wind speed of the compressor is not fine.
Disclosure of Invention
The embodiment of the invention provides a method and a device for controlling an air conditioner and the air conditioner, and provides a more refined method for controlling the frequency of an air conditioner compressor and the rotating speed of a fan of the air conditioner, so as to improve the effect of temperature and humidity double control and improve the user experience. The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview and is intended to neither identify key/critical elements nor delineate the scope of such embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.
According to a first aspect of embodiments of the present invention, there is provided a method for controlling an air conditioner, including: acquiring indoor temperature t and indoor humidity RH in an air-conditioning refrigeration mode; and judging whether the indoor temperature t and the indoor humidity RH meet the conditions, if so, controlling the rotating speed R of the indoor fan according to the indoor temperature t and the indoor humidity RH, and adjusting the working frequency F of the compressor according to the rotating speed R of the indoor fan.
Optionally, controlling the rotation speed R of the indoor fan according to the indoor temperature t and the indoor humidity RH includes: calculating a first candidate rotating speed of the indoor fan according to the indoor temperature t; calculating a second candidate rotating speed of the indoor fan according to the indoor humidity RH; and taking the smaller value of the first candidate rotating speed and the second candidate rotating speed as the rotating speed R of the indoor fan.
Alternatively, the rotation speed R of the indoor fan is calculated from the temperature difference PT between the indoor temperature t and the target temperature Tm, and the indoor temperature variation DT.
Alternatively, R — T _ Ki × DT + T _ Kp × PT; DT-t 1, PT-t-Tm; t1 represents the room temperature acquired in the previous time, and T _ Kp and T _ Ki represent the set weighting coefficients, respectively.
Optionally, T _ Ki is selected in relation to the system configuration and the ambient temperature, and T _ Kp is selected in relation to the system configuration and the ambient temperature. The value range of T _ Ki is 10-100, and the value range of T _ Kp is 10-80. Preferably, T _ Ki ═ 30, 40, 50, 60, or 70; t _ Kp is 30, 40, 50, 60 or 70.
Alternatively, the rotation speed R of the indoor fan is calculated from the humidity difference Prh between the indoor humidity RH and the target humidity RHm, and the indoor humidity change Drh.
Alternatively, R — RH _ Ki × Drh + RH _ Kp × Prh; Prh-RH-RHm, Drh-RH 1; RH1 is the indoor humidity acquired in the previous time, and RH _ Kp and RH _ Ki are set weighting coefficients, respectively.
Optionally, RH _ Ki is selected in relation to the system configuration and the ambient temperature, and RH _ Kp is selected in relation to the system configuration and the ambient temperature. The range of RH _ Ki is 10-100, and the range of RH _ Kp is 10-80. Preferably, RH _ Ki ═ 20, 30, 40, or 50; RH _ Kp ═ 30, 40, 50, 60, or 70.
Optionally, when the calculated rotation speed R of the indoor fan is greater than the upper limit value of the rotation speed, the rotation speed R of the indoor fan is set to the upper limit value, and when the calculated rotation speed R of the indoor fan is less than the lower limit value of the rotation speed, the rotation speed R of the indoor fan is set to the lower limit value.
Optionally, adjusting the operating frequency F of the compressor according to the rotation speed R of the indoor fan includes: the higher the speed R of the indoor fan, the higher the frequency of the compressor.
Optionally, a condition is satisfied when the temperature difference Δ T between the indoor temperature T and the set temperature T is less than a second set temperature difference Δ T2 and the indoor humidity RH is outside a target humidity range (RH1, RH 2); wherein the second set temperature difference Δ T2 is greater than zero.
Optionally, the target humidity range (RH1, RH2) is associated with the set temperature T.
Optionally, the method further comprises: when the temperature difference delta T between the indoor temperature T and the set temperature T is smaller than the second set temperature difference delta T2 and the indoor humidity RH is within the target humidity range (RH1, RH2), keeping the rotating speed R of the indoor fan and the working frequency F of the compressor unchanged.
Optionally, the method further comprises: when the temperature difference delta T between the indoor temperature T and the set temperature T is greater than or equal to a second set temperature difference delta T2 and less than a first set temperature difference delta T1, the working frequency F of the compressor is adjusted to a set frequency F1.
Optionally, the method further comprises: and when the temperature difference delta T is greater than or equal to the first set temperature difference delta T1, increasing the working frequency F of the compressor and/or the rotating speed R of the indoor fan so as to reduce the indoor temperature.
According to a second aspect of embodiments of the present invention, there is provided an apparatus for controlling an air conditioner, including a temperature sensor for acquiring an indoor temperature t and a humidity sensor for acquiring an indoor humidity RH, and a Micro Controller Unit (MCU) including: the judging unit is used for judging whether the indoor temperature t acquired by the temperature sensor and the indoor humidity RH acquired by the humidity sensor meet the conditions or not in the refrigerating mode; and the adjusting unit is used for controlling the rotating speed R of the indoor fan according to the indoor temperature t and the indoor humidity RH and adjusting the working frequency F of the compressor according to the rotating speed R of the indoor fan when the judging unit judges that the conditions are met.
Optionally, the MCU further comprises: the calculating unit is used for calculating a first candidate rotating speed of the indoor fan according to the indoor temperature t; calculating a second candidate rotating speed of the indoor fan according to the indoor humidity RH; and taking the smaller value of the first candidate rotating speed and the second candidate rotating speed as the rotating speed R of the indoor fan.
Optionally, the calculating unit is configured to calculate a rotation speed R of the indoor fan according to a temperature difference PT between the indoor temperature t and the target temperature Tm, and the indoor temperature variation DT.
Alternatively, R — T _ Ki × DT + T _ Kp × PT; DT-t 1, PT-t-Tm; t1 represents the room temperature acquired in the previous time, and T _ Kp and T _ Ki represent the set weighting coefficients, respectively.
Optionally, T _ Ki is selected in relation to the system configuration and the ambient temperature, and T _ Kp is selected in relation to the system configuration and the ambient temperature. The value range of T _ Ki is 10-100, and the value range of T _ Kp is 10-80. Preferably, T _ Ki ═ 30, 40, 50, 60, or 70; t _ Kp is 30, 40, 50, 60 or 70.
Optionally, the calculating unit is configured to calculate the rotation speed R of the indoor fan according to a humidity difference Prh between the indoor humidity RH and the target humidity RHm, and the indoor humidity change Drh.
Alternatively, R — RH _ Ki × Drh + RH _ Kp × Prh; Prh-RH-RHm, Drh-RH 1; RH1 is the indoor humidity acquired in the previous time, and RH _ Kp and RH _ Ki are set weighting coefficients, respectively.
Optionally, RH _ Ki is selected in relation to the system configuration and the ambient temperature, and RH _ Kp is selected in relation to the system configuration and the ambient temperature. The range of RH _ Ki is 10-100, and the range of RH _ Kp is 10-80. Preferably, RH _ Ki ═ 20, 30, 40, or 50; RH _ Kp ═ 30, 40, 50, 60, or 70.
Optionally, when the calculated rotation speed R of the indoor fan is greater than the upper limit value of the rotation speed, the rotation speed R of the indoor fan is set to the upper limit value, and when the calculated rotation speed R of the indoor fan is less than the lower limit value of the rotation speed, the rotation speed R of the indoor fan is set to the lower limit value.
Optionally, adjusting the operating frequency F of the compressor according to the rotation speed R of the indoor fan includes: the higher the speed R of the indoor fan, the higher the frequency of the compressor.
Optionally, a condition is satisfied when the temperature difference Δ T between the indoor temperature T and the set temperature T is less than a second set temperature difference Δ T2 and the indoor humidity RH is outside a target humidity range (RH1, RH 2); wherein the second set temperature difference Δ T2 is greater than zero.
Optionally, the target humidity range (RH1, RH2) is associated with the set temperature T.
Optionally, when the temperature difference Δ T between the indoor temperature T and the set temperature T is less than the second set temperature difference Δ T2 and the indoor humidity RH is within the target humidity range (RH1, RH2), the rotating speed R of the indoor fan and the operating frequency F of the compressor are kept unchanged.
Optionally, the adjusting unit is further configured to adjust the operating frequency F of the compressor to a set frequency F1 when the temperature difference Δ T between the indoor temperature T and the set temperature T is greater than or equal to a second set temperature difference Δ T2 and less than a first set temperature difference Δ T1.
Optionally, the adjusting unit is further configured to increase the operating frequency F of the compressor and/or the rotation speed R of the indoor fan to decrease the indoor temperature when the temperature difference Δ T is greater than or equal to the first set temperature difference Δ T1.
According to a third aspect of embodiments of the present invention, there is provided an air conditioner comprising a compressor and an indoor fan, and further comprising any one of the above-described devices.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
the utility model provides a method of the fan rotational speed of the control air condition compressor's that becomes more meticulous frequency and air conditioner, under the refrigeration mode, gather real-time indoor temperature and indoor humidity, judge whether need adjust the running state of air conditioner, synthesize indoor humidity and adjust the rotational speed of indoor fan, and then adjust the operating frequency of compressor to make indoor humidity and indoor temperature all be located the target range of settlement, can effectual control latent heat/show the heat ratio, improve the effect of warm and humid two accuses, improved user experience simultaneously.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a flowchart illustrating a method for controlling an air conditioner according to an exemplary embodiment;
FIG. 2 is a flowchart illustrating a method for controlling an air conditioner according to an exemplary embodiment;
fig. 3 is a block diagram illustrating a structure of an apparatus for controlling an air conditioner according to an exemplary embodiment;
fig. 4 is a block diagram illustrating a structure of an apparatus for controlling an air conditioner according to an exemplary embodiment.
Detailed Description
The following description and the drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The scope of embodiments of the invention encompasses the full ambit of the claims, as well as all available equivalents of the claims. Embodiments may be referred to herein, individually or collectively, by the term "invention" merely for convenience and without intending to voluntarily limit the scope of this application to any single invention or inventive concept if more than one is in fact disclosed. Herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed. For the structures, products and the like disclosed by the embodiments, the description is relatively simple because the structures, the products and the like correspond to the parts disclosed by the embodiments, and the relevant parts can be just described by referring to the method part.
The refrigerating capacity of the air conditioner is divided into sensible heat and latent heat, the sensible heat mainly affects the indoor temperature, the latent heat mainly affects the indoor humidity, and therefore both the sensible heat and the latent heat can affect the comfort level of people. When the temperature difference between rooms is large, the temperature of the rooms is expected to be reduced as soon as possible, and the larger the sensible heat ratio of the air conditioner is, the better the sensible heat ratio is. When the room temperature approaches or reaches the set temperature and the humidity is high, the latent heat ratio of the air conditioner is required to be larger as well as better when dehumidification is required. In this embodiment, the latent heat/sensible heat ratio can be effectively controlled by controlling the rotating speed of the indoor fan and the working frequency of the compressor, so that the effects of dehumidification and cooling are achieved. And through reasonable control latent heat/apparent heat ratio, can accomplish temperature and humidity two accuse, with indoor humidity and indoor temperature control in the target range of setting for.
Fig. 1 is a flowchart illustrating a method for controlling an air conditioner according to an exemplary embodiment. As shown in fig. 1, includes:
and step S101, acquiring indoor temperature t and indoor humidity RH in an air-conditioning refrigeration mode.
In this embodiment, the operation mode of the air conditioner can be adjusted by the remote controller of the air conditioner, the control panel on the indoor unit of the air conditioner, or the mobile terminal with remote control function for the air conditioner, such as: and the refrigeration mode of the air conditioner is controlled by clicking a refrigeration mode button on the remote controller.
The air conditioner is generally installed in the indoor space such as the living room, the bedroom, and the conference room, and therefore, the current temperature value of the indoor space such as the living room, the bedroom, or the conference room where the air conditioner is installed, which is obtained in step S101, is the real-time indoor temperature t obtained in the current process.
The air conditioner is provided with a temperature sensor for detecting a current temperature value of an indoor environment. The sensing end of the temperature sensor can be arranged on the air inlet of the air conditioner or the outer wall of the shell, so that the detected current temperature value can be the same as or close to the actual temperature of the indoor environment, and the accuracy of adjusting the working frequency of the compressor of the air conditioner and the rotating speed of the indoor fan according to the current indoor temperature value is improved.
The air conditioner is provided with a humidity sensor for detecting the current humidity value of the indoor environment, namely the real-time indoor humidity RH obtained in the current process. The sensing end of the humidity sensor can be arranged on the air inlet of the air conditioner or the outer wall of the shell, so that the current humidity value detected by the humidity sensor can be the same as or close to the actual humidity of the indoor environment, and the accuracy of adjusting the working frequency of the compressor of the air conditioner and the rotating speed of the indoor fan according to the current indoor humidity value is improved.
And S102, judging whether conditions are met or not according to the indoor temperature t and the indoor humidity RH, if so, controlling the rotating speed R of the indoor fan according to the indoor temperature t and the indoor humidity RH, and adjusting the working frequency F of the compressor according to the rotating speed R of the indoor fan.
The air conditioning system presets judgment conditions aiming at the indoor temperature t and the indoor humidity RH, judges whether the conditions are met according to the indoor temperature t and the indoor humidity RH collected in the step S101, controls the rotating speed R of the indoor fan according to the indoor temperature t and the indoor humidity RH if the conditions are met, and adjusts the working frequency F of the compressor according to the rotating speed R of the indoor fan so as to enable the indoor humidity and the indoor temperature to be within the set target range. The rotating speed R of the indoor fan is calculated by integrating the indoor temperature t and the indoor humidity RH, so that the adjusting accuracy of the air conditioner is improved, the air conditioner is in the optimal running state, and the power consumption is effectively saved.
In this embodiment, a method for controlling the frequency of an air conditioner compressor and the rotating speed of a fan of an air conditioner in a refined manner is provided, and in a refrigeration mode, real-time indoor temperature and indoor humidity are collected, whether the running state of the air conditioner needs to be adjusted is judged, the rotating speed of the indoor fan is adjusted by integrating the indoor humidity and the indoor humidity, and then the working frequency of the compressor is adjusted, so that the indoor humidity and the indoor temperature are both located in a set target range, the latent heat/sensible heat ratio can be effectively controlled, the double-control effect of temperature and humidity is improved, and meanwhile, the user experience is improved.
In some embodiments, in step S102, it is determined whether the conditions are satisfied according to the indoor temperature t and the indoor humidity RH, and if so, the rotation speed R of the indoor fan is controlled according to the indoor temperature t, and the operating frequency F of the compressor is adjusted according to the rotation speed R of the indoor fan, so that both the indoor humidity and the indoor temperature are within the set target range.
In some embodiments, in step S102, it is determined whether the conditions are satisfied according to the indoor temperature t and the indoor humidity RH, and if so, the rotation speed R of the indoor fan is controlled according to the indoor humidity RH, and the operating frequency F of the compressor is adjusted according to the rotation speed R of the indoor fan, so that both the indoor humidity and the indoor temperature are within the set target range.
In any of the foregoing embodiments, the indoor target temperature corresponds to a target humidity range (RH1, RH2), and here, a correspondence relationship between an indoor target temperature value and a target humidity range (RH1, RH2) may be stored in advance in the air conditioning system, that is, for each indoor target temperature, a plurality of human bodies may be tested, humidity that the corresponding human body feels most comfortable is obtained, humidity values corresponding to set sensible comfort levels of a plurality of human body collection samples in a set area of the indoor target temperature are obtained, and according to the humidity values, the target humidity range (RH1, RH2) corresponding to the indoor target temperature is determined, and the correspondence relationship is stored. For example: the indoor target temperature is 25 ℃, and at this time, the humidity is between 40% and 60% of the relative humidity, and most users feel the most comfortable, so that the target humidity range corresponding to the set temperature of 25 ℃ can be determined from the humidity of 40% to 60%, and the corresponding relationship between the indoor target temperature of 25 ° and the target humidity range of 40% to 60% is preserved.
Thus, the correspondence relationship between the indoor target temperature and the target humidity range pre-stored in the air conditioning system can be as shown in table 1:
TABLE 1
| Indoor target temperature | Target humidity range |
| 30℃ | The humidity is 30 to 50 percent |
| 28℃ | The humidity is 30 to 60 percent |
| … | … |
| 25℃ | The humidity is 40 to 60 percent |
| … | … |
According to the correspondence shown in table 1, a current target humidity range (RH1, RH2) corresponding to the current indoor target temperature of the air conditioner is determined. As shown in table 1, the current set temperature is 28 °, and the current target humidity range is 30% to 60%.
The indoor temperature can be changed continuously in the air conditioner operation process, and the indoor temperature needs to be controlled within a certain range to meet the requirements of users. The indoor temperature target range depends on the indoor target temperature set by the user and is determined according to the indoor target temperature set by the user and the temperature fluctuation value preset by the system. The indoor target temperature is set by a user through an air conditioner remote controller, a control panel on an air conditioner indoor unit or a mobile terminal with a remote control function on the air conditioner. For example: the preset temperature fluctuation value of the system is 2 ℃, the indoor target temperature set by the user is 28 ℃, and the indoor temperature target range is (26 ℃, 30 ℃).
In some embodiments, the indoor fan speed R is calculated from the temperature difference PT between the indoor temperature t and the target temperature Tm, and the indoor temperature variation DT. Specifically, the rotating speed R of the indoor fan is determined according to the following formula (1):
R＝T_Ki×DT+T_Kp×PT； (1)
wherein, DT-t 1, PT-t-Tm; t1 is the indoor temperature collected in the previous time, and T _ Ki and T _ Kp are respectively set weighting coefficients.
Wherein, T _ Ki is selected according to system configuration and external environment temperature, and T _ Kp is selected according to system configuration and external environment temperature. Such as: the higher the outside environment temperature is, the higher the value of T _ Ki or T _ Kp is. The external environment temperature is high, and the amplitude of each parameter needing to be adjusted to reach the target temperature or humidity is larger, so the weighting coefficient is larger. The outside ambient temperature includes an indoor ambient temperature or an outdoor ambient temperature. In the system configuration, T _ Ki and T _ Kp are selected in relation to the throttling device being a capillary tube or an expansion valve, the displacement capacity of the compressor or the size of the condenser and evaporator.
The value range of T _ Ki is 10-100, and the value range of T _ Kp is 10-80. Preferably, T _ Ki ═ 30, 40, 50, 60, or 70; t _ Kp is 30, 40, 50, 60 or 70. For example: when T _ Ki is 5, T _ Kp is 7, PT is 10, and DT is 2, according to formula (1): f is 5 × 2+7 × 10 is 800, with the unit r/min.
In some embodiments, the rotation speed R of the indoor fan is calculated from a humidity difference Prh between the indoor humidity RH and the target humidity RHm, and the indoor humidity change Drh.
R＝RH_Ki×Drh+RH_Kp×Prh； (2)
Wherein Prh-RH-RHm, Drh-RH 1; RH1 is the indoor humidity acquired in the previous time, and RH _ Kp and RH _ Ki are set weighting coefficients, respectively.
Wherein, the selection of RH _ Ki is related to the system configuration and the external environment temperature, and the selection of RH _ Kp is related to the system configuration and the external environment temperature. Such as: the higher the external environment temperature is, the larger the value of RH _ Ki or RH _ Kp is. The external environment temperature is high, and the amplitude of each parameter needing to be adjusted to reach the target temperature or humidity is larger, so the weighting coefficient is larger. The outside ambient temperature includes an indoor ambient temperature or an outdoor ambient temperature. In the system configuration, RH _ Ki and RH _ Kp are selected in relation to the size of the throttling device, which is a capillary or an expansion valve, the displacement capacity of the compressor or the size of the condenser and evaporator.
Wherein the range of RH _ Ki is 10-100, and the range of RH _ Kp is 10-80. Preferably, RH _ Ki ═ 20, 30, 40, or 50; RH _ Kp ═ 30, 40, 50, 60, or 70. For example: when RH _ Ki is 20, RH _ Kp is 40, Drh is 5, Prh is 20, according to equation (2): f20 × 5+40 × 20 900, with the unit r/min.
In some embodiments, first, a first candidate rotation speed of the indoor fan is calculated according to the indoor temperature t by formula (1); secondly, calculating a second candidate rotating speed of the indoor fan according to the indoor humidity RH by a formula (2); and finally, taking the smaller value of the first candidate rotating speed and the second candidate rotating speed as the rotating speed R of the indoor fan. Different parameters are integrated to calculate the rotating speed of the indoor fan, and the air conditioner adjusting accuracy is further improved.
In some embodiments, the air conditioning system is provided with a range of rotational speeds of the indoor fan. When the calculated rotating speed R of the indoor fan is greater than a set upper limit value, setting the rotating speed R of the indoor fan as the upper limit value; and when the calculated rotating speed R of the indoor fan is less than the set lower limit value, setting the rotating speed R of the indoor fan as the lower limit value. The running efficiency of the air conditioner is guaranteed, and the service life of the indoor fan of the air conditioner is prolonged. Preferably, the rotating speed R of the indoor fan ranges from (500R/min, 1000R/min). Such as: when the preset rotating speed R range of the indoor fan is 500R/min and 1000R/min, if the rotating speed R of the indoor fan obtained according to the formula (1) or (2) is 450R/min, adjusting the rotating speed R of the indoor fan to be a set lower limit value of 500R/min; and if the rotating speed R of the indoor fan obtained according to the formula (1) or (2) is 1050R/min, adjusting the rotating speed R of the indoor fan to be 1000R/min.
In any of the foregoing embodiments, after determining the rotation speed R of the indoor fan, adjusting the operating frequency F of the compressor according to the rotation speed R of the indoor fan includes: the higher the speed R of the indoor fan, the higher the frequency of the compressor.
An optional mode is that, through the preset corresponding relationship between the rotating speed R of the indoor fan and the working frequency F of the compressor, the working frequency F of the compressor is obtained by looking up a table, and the specific corresponding relationship is shown in table 2:
TABLE 2
The working frequencies of the compressors corresponding to different rotating speed ranges of the indoor fan are different, and the working frequency of the compressor corresponding to the high-wind-speed section of the indoor fan is high, because the lower the wind speed is, the larger the dehumidification amount is, but the too low wind speed in the high-frequency section can cause the risk of freezing the coil pipe of the indoor unit.
Alternatively, the operating frequency F of the compressor is calculated by calculating, specifically, according to the following formula (3):
F＝R/15–15。 (3)
as shown in fig. 2, a method for controlling an air conditioner according to an embodiment includes steps S101, collecting indoor temperature T and indoor humidity RH in an air-conditioning refrigeration mode, executing step S201 when the temperature difference delta T between the indoor temperature T and a set temperature T is less than a second set temperature difference delta T2 and the indoor humidity RH is outside a target humidity range (RH1, RH2), when the temperature difference Δ T between the indoor temperature T and the set temperature T is less than the second set temperature difference Δ T2 and the indoor humidity RH is within the target humidity range (RH1, RH2), executing step S202, when the temperature difference Δ T between the indoor temperature T and the set temperature T is greater than or equal to the second set temperature difference Δ T2 and less than the first set temperature difference Δ T1, step S203 is executed, when the temperature difference Δ T is greater than or equal to the first set temperature difference Δ T1, step S204 is performed.
The air conditioner is preset with a first set temperature differential Δ T1 and a second set temperature differential Δ T2. Wherein the first set temperature differential Δ T1 and the second set temperature differential Δ T2 are greater than zero. The first set temperature differential Δ T1 is greater than the second set temperature differential Δ T2.
In step S201, when the temperature difference Δ T between the indoor temperature T and the set temperature T is smaller than a second set temperature difference Δ T2, and the indoor humidity RH is outside the target humidity range (RH1, RH2), i.e. T-T < Δ T2, and RH (RH1, RH2), the rotation speed R of the indoor fan is controlled according to the indoor temperature T and the indoor humidity RH, and the operating frequency F of the compressor is adjusted according to the rotation speed R of the indoor fan, so that the indoor humidity and the indoor temperature are both within the set target range.
In some embodiments, in step S201, when the temperature difference Δ T between the indoor temperature T and the set temperature T is less than the second set temperature difference Δ T2, and the indoor humidity RH is outside the target humidity range (RH1, RH2), i.e., T-T < Δ T2, and RH (RH1, RH2), the indoor fan speed R is controlled according to the indoor temperature T, and the operating frequency F of the compressor is adjusted according to the indoor fan speed R, so that the indoor humidity and the indoor temperature are both within the set target range.
In some embodiments, in step S201, when the temperature difference Δ T between the indoor temperature T and the set temperature T is less than a second set temperature difference Δ T2, and the indoor humidity RH is outside the target humidity range (RH1, RH2), a condition is satisfied, i.e., T-T < Δ T2, and RH (RH1, RH2), at this time, it is determined whether the condition is satisfied according to the indoor temperature T and the indoor humidity RH, if so, the rotating speed R of the indoor fan is controlled according to the indoor humidity RH, and the operating frequency F of the compressor is adjusted according to the rotating speed R of the indoor fan, so that both the indoor humidity and the indoor temperature are within the set target range.
In step S202, when the temperature difference Δ T between the indoor temperature T and the set temperature T is smaller than the second set temperature difference Δ T2, and the indoor humidity RH is within the target humidity range (RH1, RH2), the condition that T-T < Δ T2, and RH ∈ [ RH1, RH2] is not satisfied, at this time, the rotation speed R of the indoor fan and the operating frequency F of the compressor are kept unchanged.
In step S203, when the temperature difference Δ T between the indoor temperature T and the set temperature T is greater than or equal to the second set temperature difference Δ T2 and less than the first set temperature difference Δ T1, i.e., Δ T2 ≦ T-T < Δ T1, the operating frequency F of the compressor is adjusted to a set frequency F1.
In some embodiments, the set frequency f1 is 70% of the maximum compressor frequency.
In the foregoing embodiment, when the temperature difference Δ T is greater than or equal to the first set temperature difference Δ T1, i.e., T-T ≧ Δ T1, the operating frequency F of the compressor is increased to reduce the indoor temperature.
In other embodiments, when the temperature difference Δ T is greater than or equal to the first set temperature difference Δ T1, i.e., T-T ≧ Δ T1, the speed R of the indoor fan is increased to decrease the indoor temperature.
In other embodiments, when the temperature difference Δ T is greater than or equal to the first set temperature difference Δ T1, i.e., T-T ≧ Δ T1, the operating frequency F of the compressor is increased, and the rotational speed R of the indoor fan is increased to increase the rate of reducing the indoor temperature.
The following are embodiments of the disclosed apparatus that may be used to perform embodiments of the disclosed methods.
Fig. 3 is a block diagram illustrating a structure of an apparatus for controlling an air conditioner according to an exemplary embodiment. As shown in fig. 3, includes: temperature sensor 301, humidity sensor 302 and MCU303, MCU303 includes: a judgment unit 3031 and an adjustment unit 3032.
And the temperature sensor 301 is used for acquiring the indoor temperature t.
And the humidity sensor 302 is used for acquiring indoor humidity RH.
In this embodiment, the sensing end of the temperature sensor is disposed on the air inlet of the air conditioner or the outer wall of the housing, and the sensing end of the humidity sensor is disposed on the air inlet of the air conditioner or the outer wall of the housing.
The determining unit 3031 is configured to determine whether a condition is satisfied according to the indoor temperature t and the indoor humidity RH.
And the adjusting unit 3032 is configured to control the rotation speed R of the indoor fan according to the indoor temperature t and the indoor humidity RH and adjust the working frequency F of the compressor according to the rotation speed R of the indoor fan when the determining unit determines that the condition is met. So that both the indoor humidity and the indoor temperature are within the set target ranges.
In this embodiment, under the refrigeration mode, real-time indoor temperature and the real-time indoor humidity of humidity transducer collection are gathered to temperature sensor, judge by the judgement unit whether need adjust the running state of air conditioner, the regulating unit synthesizes indoor temperature and indoor humidity and adjusts the rotational speed of indoor fan, and then the operating frequency of adjustment compressor, so that indoor humidity and indoor temperature all are located the target range of settlement, can effectual control latent heat/apparent heat ratio, improve the effect of the two accuses of temperature and humidity, user experience has been improved simultaneously.
In some embodiments, the adjusting unit 3032 is configured to, when the determining unit determines that the condition is satisfied, control a rotation speed R of the indoor fan according to the indoor temperature t, and adjust an operating frequency F of the compressor according to the rotation speed R of the indoor fan, so that both the indoor humidity and the indoor temperature are within a set target range.
In some embodiments, the adjusting unit 3032 is configured to, when the determining unit determines that the condition is satisfied, control a rotation speed R of the indoor fan according to the indoor temperature t and the indoor humidity RH, and adjust an operating frequency F of the compressor according to the rotation speed R of the indoor fan, so that both the indoor humidity and the indoor temperature are within a set target range.
In some embodiments, as shown in fig. 4, the apparatus for controlling an air conditioner further includes: a calculation unit 401.
The calculating unit 401 is first configured to calculate a first candidate rotation speed of the indoor fan according to the indoor temperature t by using the formula (1); secondly, calculating a second candidate rotating speed of the indoor fan according to the indoor humidity RH by a formula (2); and finally, taking the smaller value of the first candidate rotating speed and the second candidate rotating speed as the rotating speed R of the indoor fan. Different parameters are integrated to calculate the rotating speed of the indoor fan, and the air conditioner adjusting accuracy is further improved.
In some embodiments, the calculating unit 401 is configured to calculate the rotation speed R of the indoor fan according to the temperature difference PT between the indoor temperature t and the target temperature Tm, and the indoor temperature variation DT. Specifically, the rotating speed R of the indoor fan is calculated according to a formula (1).
In some embodiments, the calculating unit 401 is configured to calculate the rotation speed R of the indoor fan according to the humidity difference Prh between the indoor humidity RH and the target humidity RHm, and the indoor humidity change Drh. Specifically, the rotating speed R of the indoor fan is calculated according to a formula (2).
In any of the foregoing embodiments, the adjusting unit 3032 is configured to adjust the rotation speed R of the indoor fan according to the calculation result of the calculating unit 401.
In some embodiments, the air conditioning system is provided with a rotation speed range of the indoor fan, and when the rotation speed R of the indoor fan calculated by the calculation unit 401 is greater than a set upper limit value, the rotation speed R of the indoor fan is set to the upper limit value; and when the calculated rotating speed R of the indoor fan is less than the set lower limit value, setting the rotating speed R of the indoor fan as the lower limit value. The running efficiency of the air conditioner is guaranteed, and the service life of the indoor fan of the air conditioner is prolonged.
The adjusting unit 3032 adjusts the working frequency F of the compressor according to the rotating speed R of the indoor fan, and the higher the rotating speed R of the indoor fan is, the higher the frequency of the compressor is.
An optional mode is that the working frequency F of the compressor is obtained according to table 2 through a preset corresponding relationship between the rotating speed R of the indoor fan and the working frequency F of the compressor.
Alternatively, the operating frequency F of the compressor is determined by the calculating unit 401 from the rotation speed R of the indoor fan according to equation (3).
In some embodiments, when the temperature difference Δ T between the indoor temperature T and the set temperature T is less than the second set temperature difference Δ T2 and the indoor humidity RH is outside the target humidity range (RH1, RH2), a condition is satisfied, and then the calculating unit 401 is configured to calculate a first candidate rotation speed of the indoor fan according to the indoor temperature T by using the formula (1); calculating a second candidate rotating speed of the indoor fan according to the indoor humidity RH by the formula (2); and the adjusting unit 3032 is configured to adjust the rotation speed of the indoor fan according to the calculation result of the calculating unit 401, by taking the smaller one of the first candidate rotation speed and the second candidate rotation speed as the rotation speed R of the indoor fan.
In some embodiments, when the temperature difference Δ T between the indoor temperature T and the set temperature T is less than the second set temperature difference Δ T2 and the indoor humidity RH is outside the target humidity range (RH1, RH2), a condition is satisfied, where the calculating unit 401 is configured to calculate the rotation speed R of the indoor fan according to the indoor temperature T by using the formula (1), and the adjusting unit 3032 is configured to adjust the rotation speed of the indoor fan according to the calculation result of the calculating unit 401.
In some embodiments, when the temperature difference Δ T between the indoor temperature T and the set temperature T is less than the second set temperature difference Δ T2 and the indoor humidity RH is outside the target humidity range (RH1, RH2), a condition is satisfied, where the calculating unit 401 is configured to calculate the rotation speed R of the indoor fan according to the indoor humidity RH by using the formula (2), and the adjusting unit 3032 is configured to adjust the rotation speed of the indoor fan according to the calculation result of the calculating unit 401.
In some embodiments, when the temperature difference Δ T between the indoor temperature T and the set temperature T is less than the second set temperature difference Δ T2 and the indoor humidity RH is within the target humidity range (RH1, RH2), the rotation speed R of the indoor fan and the operating frequency F of the compressor are maintained constant.
In some embodiments, the adjusting unit 3032 is further configured to adjust the operating frequency F of the compressor to a set frequency F1 when the temperature difference Δ T between the indoor temperature T and the set temperature T is greater than or equal to the second set temperature difference Δ T2 and less than the first set temperature difference Δ T1.
In some embodiments, the set frequency f1 is 70% of the maximum compressor frequency.
In some embodiments, the adjusting unit 3032 is further configured to increase the operating frequency F of the compressor to decrease the indoor temperature when the temperature difference Δ T is greater than or equal to the first set temperature difference Δ T1.
In other embodiments, the adjusting unit 3032 is further configured to increase the rotation speed R of the indoor fan to decrease the indoor temperature when the temperature difference Δ T is greater than or equal to the first set temperature difference Δ T1.
In other embodiments, the adjusting unit 3032 is further configured to increase the operating frequency F of the compressor and simultaneously increase the rotation speed R of the indoor fan to increase the rate of reducing the indoor temperature when the temperature difference Δ T is greater than or equal to the first set temperature difference Δ T1.
The present disclosure also includes an air conditioner comprising a compressor and an indoor fan, and further comprising the apparatus of any of the foregoing embodiments.
It is to be understood that the present invention is not limited to the procedures and structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
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| CN108397853B (en) | 2018-02-11 | 2019-11-01 | 珠海格力电器股份有限公司 | Air conditioning unit control method and device |
| CN110822617B (en) * | 2018-08-13 | 2021-07-27 | 青岛海尔空调电子有限公司 | Control method for air conditioner and air conditioner |
| CN109780689B (en) * | 2019-01-31 | 2021-12-14 | 美的集团武汉暖通设备有限公司 | Control method of air conditioner, air conditioner and computer readable storage medium |
| WO2021062895A1 (en) * | 2019-09-30 | 2021-04-08 | 广东美的制冷设备有限公司 | Air treatment device and control method therefor |
| CN112880151B (en) * | 2021-02-02 | 2022-04-15 | 青岛海尔空调器有限总公司 | Control method and control device for indoor unit of air conditioner |
| CN113050438B (en) * | 2021-02-26 | 2023-02-17 | 青岛海尔空调器有限总公司 | Method, device and home appliance for home appliance control |
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Effective date of registration: 20201030 Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee after: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Patentee after: QINGDAO HAIER (JIAOZHOU) AIR CONDITIONER Co.,Ltd. Patentee after: Haier Smart Home Co., Ltd. Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee before: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Patentee before: QINGDAO HAIER (JIAOZHOU) AIR CONDITIONER Co.,Ltd. |
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