CN110762784B - Control method and device for air conditioner fan and computer readable storage medium - Google Patents
Control method and device for air conditioner fan and computer readable storage medium Download PDFInfo
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- CN110762784B CN110762784B CN201810748023.9A CN201810748023A CN110762784B CN 110762784 B CN110762784 B CN 110762784B CN 201810748023 A CN201810748023 A CN 201810748023A CN 110762784 B CN110762784 B CN 110762784B
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- 238000012937 correction Methods 0.000 claims description 13
- 238000004590 computer program Methods 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 description 23
- 238000001704 evaporation Methods 0.000 description 14
- 230000008020 evaporation Effects 0.000 description 13
- 239000003507 refrigerant Substances 0.000 description 9
- 230000002596 correlated effect Effects 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 8
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- 239000007788 liquid Substances 0.000 description 2
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- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004422 calculation algorithm Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
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Abstract
The embodiment of the invention discloses a control method of an air conditioner fan, and belongs to the technical field of air conditioners. The method comprises the following steps: when the first pressure of the evaporator is lower than or equal to a first set pressure, a first rotating speed of a first fan is determined according to one or more of the first pressure, a first environment temperature on the evaporator side and a first exhaust temperature of the compressor, and the first fan is controlled to operate according to the first rotating speed, wherein the first fan is a fan on the condenser side. The control method provided by the embodiment avoids the shutdown of the compressor by adjusting the pressure of the evaporator of the outdoor unit. The embodiment of the invention also discloses a control device of the air conditioner fan and a computer readable storage medium.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a control method and a control device for an air conditioner fan and a computer readable storage medium.
Background
When the air conditioner heats, the evaporation pressure of the outdoor unit is reduced along with the reduction of the outdoor environment temperature, when the outdoor environment temperature is reduced, the evaporation pressure of the outdoor unit is reduced, and when the pressure of an evaporator of the outdoor unit is lower than the lowest pressure threshold value, the compressor is stopped, the normal work of the air conditioner is influenced, and even the service life of the air conditioner is influenced.
Disclosure of Invention
The embodiment of the invention provides a control method of an air conditioner fan, which avoids the stop of a compressor by adjusting the pressure of an outdoor unit evaporator.
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 the embodiments of the present invention, a method for controlling an air conditioner fan is provided.
In an optional embodiment, the control method of the air conditioner fan comprises the following steps: when the first pressure of the evaporator is lower than or equal to a first set pressure, determining a first rotating speed of a first fan according to one or more of the first pressure, a first environment temperature on the evaporator side and a first exhaust temperature of the compressor, wherein the first fan is a fan on the condenser side; and controlling the first fan to operate according to the first rotating speed.
In an alternative embodiment, the determining a first speed of the first fan based on one or more of the first pressure, a first ambient temperature on the evaporator side, and a first discharge temperature of the compressor includes: judging whether the first environment temperature is lower than or equal to a first set environment temperature; determining whether the first exhaust temperature is less than or equal to a first set exhaust temperature; and when the first environment temperature is lower than or equal to a first set environment temperature and the first exhaust temperature is lower than or equal to a first set exhaust temperature, determining a first rotating speed in one or more first set rotating speeds.
In an alternative embodiment, when it is determined that the first pressure of the evaporator is lower than or equal to the first set pressure, the method further includes: and determining a second rotating speed of a second fan according to one or more of the first pressure, the first environment temperature and the first exhaust temperature, wherein the second fan is a fan on an evaporator side, and the second fan is controlled to operate according to the second rotating speed.
In an optional embodiment, the control method of the air conditioner fan further includes: and when the air conditioner is in a starting process and one or two of the first environment temperature and the first exhaust temperature do not meet set conditions, controlling the first fan to operate at a third set rotating speed.
According to a second aspect of the embodiments of the present invention, there is provided a control apparatus for an air conditioner blower.
In an alternative embodiment, the control device of the air conditioner fan includes: the first calculation module is used for determining a first rotating speed of a first fan according to one or more of the first pressure, a first environment temperature on the evaporator side and a first exhaust temperature of the compressor when the first pressure of the evaporator is determined to be lower than or equal to a first set pressure, wherein the first fan is a fan on the condenser side; and the first control module is used for controlling the first fan to operate according to the first rotating speed.
In an alternative embodiment, the first calculation module comprises: a first judgment unit for judging whether the first ambient temperature is lower than or equal to a first set ambient temperature; and a second judgment unit for judging whether the first exhaust temperature is lower than or equal to a first set exhaust temperature; and the first calculation unit is used for determining the first rotating speed in one or more first set rotating speeds when the first environment temperature is lower than or equal to a first set environment temperature and the first exhaust temperature is lower than or equal to a first set exhaust temperature.
In an alternative embodiment, the control device further comprises: the second calculation module is used for determining a second rotating speed of a second fan according to one or more of the first pressure, the first environment temperature and the first exhaust temperature, wherein the second fan is a fan on the evaporator side; and the second control module is used for controlling the second fan to operate according to the second rotating speed.
In an optional embodiment, the control device further comprises a third control module, configured to control the first fan to operate at a third set rotation speed when the air conditioner is in a starting process and one or both of the first ambient temperature and the first exhaust temperature do not satisfy the set condition.
A control device of an air conditioner fan is applied to a terminal or a server, and comprises: a processor; wherein the processor is configured to: when the first pressure of the evaporator is lower than or equal to a first set pressure, determining a first rotating speed of a first fan according to one or more of the first pressure, a first environment temperature on the evaporator side and a first exhaust temperature of the compressor, wherein the first fan is a fan on the condenser side; and controlling the first fan to operate according to the first rotating speed.
According to a third aspect of embodiments of the present invention, there is provided a computer-readable storage medium.
In an alternative embodiment, the computer readable storage medium stores a computer program, which when executed by a processor implements the control method of the air conditioner fan described above.
The embodiment of the invention has the beneficial effects that: when the first fan of condenser moves at a first rotating speed, the pressure of the condenser is adjusted, so that the first pressure of the evaporator is adjusted, the compressor is prevented from being shut down due to too low air inlet pressure, and the service life of the air conditioner is prolonged.
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 control method of an air conditioner blower according to an exemplary embodiment.
Fig. 2 is a flowchart illustrating a control method of an air conditioner blower according to an exemplary embodiment.
Fig. 3 is a block diagram illustrating an apparatus for controlling an air conditioner blower 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. Also, 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. The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. 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 air conditioner functions to adjust the indoor temperature, and in the process of adjusting the indoor temperature, the air conditioner needs to be operated in a proper environment. When the actual working environment of the air conditioner is too severe, the air conditioner is often stopped, the temperature adjusting speed of the air conditioner is reduced, and even the service life of the air conditioner is influenced. For example, when the air conditioner is in the process of heating, the evaporation pressure of the outdoor unit is reduced as the outdoor ambient temperature is reduced, and when the outdoor ambient temperature is reduced, the evaporation pressure of the outdoor unit is reduced; when the evaporating pressure of the outdoor unit is lower than the set temperature, the compressor of the air conditioner is stopped, which affects the normal temperature adjusting process of the air conditioner and even affects the service life of the air conditioner. In view of the above problems, embodiments of the present invention provide a control method for an air conditioner fan, which is applied to a heating process of an air conditioner, that is, an indoor heat exchanger of the air conditioner is a condenser, an outdoor heat exchanger is an evaporator, and when it is determined that an evaporation pressure of the outdoor evaporator is about to be lower than a set temperature, a pressure in the indoor condenser is changed by adjusting a rotation speed of the indoor fan, so as to adjust an evaporation pressure of an outdoor unit, thereby avoiding a problem of too low evaporation pressure of the outdoor evaporator, thereby avoiding a phenomenon of shutdown of a compressor, and further prolonging a service life of the air conditioner.
As shown in fig. 1, according to a first aspect of an embodiment of the present invention, a method for controlling an air conditioner fan is provided.
In an optional embodiment, the control method of the air conditioner fan comprises the following steps: s101, when the first pressure of the evaporator is lower than or equal to a first set pressure, determining a first rotating speed of a first fan according to one or more of the first pressure, a first environment temperature on the evaporator side and a first exhaust temperature of the compressor, wherein the first fan is a fan on the condenser side.
In S101, several embodiments are included, and the first embodiment is: determining a first rotating speed of the first fan according to any one of the first pressure, a first environment temperature of the evaporator and a first exhaust temperature of the compressor; the second embodiment is as follows: determining the rotating speed of the first fan according to any two of the first pressure, the first environment temperature of the evaporator and the first exhaust temperature of the compressor; the third embodiment is: a first rotating speed of the first fan is determined according to the first pressure, the first environment temperature of the evaporator and the first exhaust temperature of the compressor. In S101, the first pressure of the evaporator is the pressure at the low-pressure end of the evaporator, so that the influence of the pressure drop in the evaporator can be avoided, and the compressor can be more accurately prevented from being stopped. And the first set pressure in the step S101 is higher than a minimum pressure threshold of the evaporator, wherein the minimum pressure threshold refers to a minimum value of the first pressure of the evaporator allowed under normal operation, and if the first pressure is lower than the minimum value, the compressor of the air conditioner is stopped.
And S102, controlling the first fan to operate according to the first rotating speed.
After the first fan is controlled to operate according to the first rotating speed, if the first pressure of the evaporator is higher than or equal to the first set pressure, the first fan is controlled to operate according to the default set rotating speed. The default set rotating speed is the rotating speed set by a user or set when the air conditioner leaves a factory. For example, the default set rotational speed is any one of the primary wind speed, the intermediate wind speed, and the high wind speed. And, the first rotational speed is lower than the default set rotational speed.
In the working process of the air conditioner, the ambient temperature of the evaporator side affects the heat exchange efficiency of the evaporator, the heat exchange efficiency of the evaporator affects the temperature of the evaporator, and the temperature of the evaporator further affects the pressure of the evaporator. The discharge temperature of the compressor affects the pressure of the condenser, which in turn further affects the pressure of the evaporator, since the condenser is in communication with the evaporator via a throttle device. Therefore, both the ambient temperature on the evaporator side and the discharge temperature of the compressor affect the evaporator pressure. In this embodiment, after the first rotation speed of the first fan is determined according to one or more of the evaporation pressure, the first ambient temperature, and the discharge temperature of the compressor, the first fan operates at the first rotation speed to adjust the pressure of the condenser, so as to adjust the first pressure of the evaporator, thereby preventing the compressor from being stopped due to too low intake pressure, and further prolonging the service life of the air conditioner.
In the prior art, when the first pressure of the evaporator is too low, a low-pressure shielding mode can be selected to ensure the normal operation of the compressor, but the liquid impact phenomenon is easy to generate, and the service life of the compressor is damaged; the bypass pressure relief can be increased, the fan speed on the evaporator side can be controlled, and the heating effect on the condenser side can be affected. In the embodiment, the first pressure of the evaporator is always detected, so that the liquid impact phenomenon of the compressor can be avoided, and the service life of the compressor is prolonged; the bypass pressure relief is not added, the refrigerant continues to pass through the condenser to reach the evaporator, and the heating effect of the condenser can still be ensured. Adopt the mode of the first fan of control condenser side, when the rotational speed of the first fan of condenser side reduces, lead to the pressure of condenser to rise, and then lead to the condensing temperature of refrigerant in the condenser to rise, the temperature of condenser has been improved, the difference in temperature of condenser self and condenser surrounding environment has been improved, and then heat exchange efficiency has been increased, therefore, adopt this embodiment, although the rotational speed of the first fan of condenser side has been reduced, still can guarantee the heat exchange efficiency of condenser side, when this embodiment is applied to the air conditioner heating process, still can guarantee that the air conditioner has the better effect of heating.
The control method in the embodiment is suitable for the heating process and the cooling process of the air conditioner. When the air conditioner is in a heating process, the condenser is arranged indoors, the evaporator is arranged outdoors, and the first fan is a fan of the indoor unit. When the air conditioner is in a refrigerating process, the condenser is arranged outdoors, the evaporator is arranged indoors, and the first fan is a fan of the outdoor unit.
In S101, when it is determined that the first pressure of the evaporator is lower than or equal to the first set pressure, the value of the first pressure is positively correlated with the value of the first rotation speed, the value of the first ambient temperature is positively correlated with the value of the first rotation speed, and the value of the first exhaust temperature is positively correlated with the value of the first rotation speed. For example, the lower the first pressure, the lower the first rotational speed; the lower the first ambient temperature, the lower the first rotational speed; the lower the first exhaust temperature, the lower the first rotational speed.
In an alternative embodiment, determining a first speed of the first fan based on one or more of the first pressure, the first ambient temperature on the evaporator side, and the first discharge temperature of the compressor includes: judging whether the first environment temperature is lower than or equal to a first set environment temperature; judging whether the first exhaust temperature is lower than or equal to a first set exhaust temperature; and when the first environment temperature is lower than or equal to a first set environment temperature and the first exhaust temperature is lower than or equal to a first exhaust gas, determining a first rotating speed in one or more first set rotating speeds, wherein the first rotating speed is lower than the lowest rotating speed in the default control strategy.
When the first ambient temperature is lower than or equal to the first set ambient temperature and the first exhaust temperature is lower than or equal to the first set exhaust temperature, it is not possible to ensure that the first pressure of the evaporator reaches the first set pressure, if the conventional air conditioning control strategy is still followed. In this embodiment, the heat exchange efficiency of the condenser is reduced by reducing the rotation speed of the first fan, so that the pressure inside the condenser is increased, more condensation flows from the condenser to the evaporator, and the first pressure of the evaporator is increased.
Optionally, the first set ambient temperature and the first set pressure have the following relationship: if the evaporation pressure of the refrigerant is taken as the first set pressure, the evaporation temperature of the refrigerant is taken as the first set environment temperature. That is, when it is determined that the first pressure of the evaporator is lower than the first set pressure, the first ambient temperature changes toward a trend lower than the first set ambient temperature; when the first ambient temperature is lower than the first set ambient temperature, the first pressure of the evaporator changes toward a tendency lower than the first set pressure. When the first pressure is lower than the first set pressure and the first ambient temperature is the first set ambient temperature, the evaporator cannot absorb heat in the surrounding environment, and the refrigerant in the evaporator is evaporated. Under the condition, more refrigerants flow to the evaporator from the condenser only by reducing the rotating speed of the first fan, so that the first pressure of the evaporator is increased, and the air conditioner is prevented from stopping.
The difference between the first pressure and the first set pressure is a first pressure difference, the difference between the first ambient temperature and the first set ambient temperature is a first ambient temperature difference, and the difference between the first exhaust temperature and the first set exhaust temperature is a first exhaust temperature difference. The first pressure difference at a plurality of moments can be obtained through the first pressure at the plurality of moments, the first environment temperature difference at the plurality of moments can be obtained through the first environment temperature at the plurality of moments, and the first pressure difference at the plurality of moments can be obtained through the first exhaust temperature at the plurality of moments. The difference between a first pressure difference at a certain time and another first pressure difference at a time adjacent to the certain time is a first ambient temperature change rate. Wherein the first set pressure may be subtracted based on the first pressure to obtain a first pressure difference, and the first pressure may be subtracted based on the first set pressure to obtain a first pressure difference; the first pressure difference at the previous moment in time may be subtracted from the first pressure difference at a certain moment in time to obtain the first pressure change rate, and the first pressure difference at the previous moment in time may be subtracted from the first pressure difference at the certain moment in time to obtain the first pressure change rate. The manner of acquiring the first ambient temperature difference and the first exhaust temperature difference is similar to that of acquiring the first pressure difference, and is not repeated.
In an alternative embodiment, S101 may be implemented as: when it is determined that the first pressure of the evaporator is lower than or equal to the first set pressure, a first rotating speed of the first fan is determined according to one or more of first pressure change information, a first ambient temperature difference and a first exhaust temperature difference, wherein the first pressure change information comprises a first pressure difference and/or a first pressure change rate.
In this embodiment, the first rotation speed of the first fan can be determined more accurately. This embodiment may be embodied as: when the first set pressure is subtracted on the basis of the first pressure to obtain the first pressure difference, the first rotation speed is positively correlated with the first pressure difference. When the first set ambient temperature is subtracted on the basis of the first ambient temperature to obtain a first ambient temperature difference, the first rotation speed is positively correlated with the first ambient temperature difference. When the first set exhaust temperature is subtracted from the first exhaust temperature to obtain the first exhaust temperature difference, the first rotation speed is positively correlated with the first exhaust temperature difference. When a first rotating speed is determined according to the first pressure difference, the first environment temperature difference and the first exhaust temperature difference, a first sub-rotating speed can be determined according to the first pressure difference, a second sub-rotating speed is determined according to the first environment temperature difference, a third sub-rotating speed is determined according to the first exhaust temperature difference, the first rotating speed is the weighted sum of the first sub-rotating speed, the second sub-rotating speed and the third sub-rotating speed, wherein the weight of the first sub-rotating speed is greater than that of the second sub-rotating speed, and the weight of the second sub-rotating speed is greater than that of the third sub-rotating speed.
And determining a correction coefficient of the first rotating speed according to the absolute value of the first pressure change rate, and multiplying the first rotating speed obtained in the above step by the correction coefficient to obtain the final first rotating speed, wherein the absolute value of the first change rate is positively correlated with the correction coefficient. The first pressure of the evaporator is guaranteed to stably reach the first set pressure, the absolute value of the first pressure change rate is large, the first pressure of the evaporator is indicated to be changed fast, the correction coefficient is increased at the moment, the first rotating speed is increased, the pressure in the condenser is reduced, the increase rate of the first pressure of the evaporator is reduced, and the first pressure of the evaporator is guaranteed to stably rise.
In order to further avoid the situation that the first pressure of the evaporator is lower than the minimum pressure threshold value, and ensure more stable operation of the air conditioner, optionally, when the first pressure of the evaporator is higher than or equal to the first set pressure, the first rotating speed of the first fan is determined according to one or more of the first pressure change information, the first ambient temperature change information, and the first exhaust temperature change information. The first rotating speed of the first fan can be adjusted when the first pressure of the evaporator is not lower than or equal to the first set pressure, so that the air conditioner can operate more stably.
As shown in fig. 2, in an alternative embodiment, the method further includes: when it is determined that the first pressure of the evaporator is lower than or equal to the first set pressure, the method further includes: s201, determining a second rotating speed of a second fan according to one or more of the first pressure, the first environment temperature and the exhaust temperature, wherein the second fan is a fan on the evaporator side. Wherein the second rotating speed is higher than the default set rotating speed.
And S202, controlling the second fan to operate according to the second rotating speed.
The embodiment is suitable for an application scenario in which the first ambient temperature is higher than the temperature of the evaporator. After the second fan runs at the second rotating speed, the heat exchange efficiency of the evaporator is directly influenced, the evaporator can exchange heat with the environment more efficiently, namely the evaporator can absorb heat better from the environment, the temperature of the evaporator is increased, the evaporation rate of refrigerant in the evaporator is increased, the first pressure of the evaporator is increased, and the compressor is prevented from being stopped.
The control mode of the second fan is opposite to that of the first fan. I.e. the first rotational speed of the first fan is inversely related to the second rotational speed of the second fan. If the first fan needs to increase the first rotating speed, the second fan needs to reduce the second rotating speed; if the first fan needs to reduce the first rotating speed, the second fan needs to increase the second rotating speed.
For example, when the first ambient temperature is higher than the evaporator temperature, the value of the second rotational speed is inversely related to the value of the first pressure, the value of the second rotational speed is inversely related to the value of the first ambient temperature, and the value of the second rotational speed is inversely related to the first exhaust temperature.
When the first ambient temperature is higher than the temperature of the evaporator, the technical solution in S201 may be implemented as: and determining a second rotating speed of the second fan according to one or more of the first pressure change information, the first environment temperature change information and the first exhaust temperature change information, wherein the first pressure change information comprises a first pressure difference and/or a first pressure change rate, the first environment temperature change information comprises a first environment temperature difference and/or a first environment temperature change rate, and the first exhaust temperature change information comprises a first exhaust temperature difference and/or a first exhaust temperature change rate.
In an optional embodiment, the control method of the air conditioner fan further includes: and when the air conditioner is in a starting process and one or two of the first environment temperature and the exhaust temperature do not meet set conditions, controlling the first fan to operate at a third set rotating speed.
In this embodiment, at least the following three embodiments are included: when the air conditioner is in a starting process and the first environment temperature is lower than a first set temperature, controlling the first fan to operate at a third rotating speed; when the air conditioner is in a starting process and the exhaust temperature is lower than a second set temperature, controlling the first fan to operate at a fourth rotating speed; and when the air conditioner is in a starting process, the first environment temperature is lower than a first set temperature, and the exhaust temperature is lower than a second set temperature, the first fan is controlled to operate at a fifth rotating speed.
In the technical solutions provided in the foregoing embodiments, the first pressure of the evaporator is mainly increased, so as to avoid the shutdown of the compressor, that is, the technical solutions above are implicitly disclosed to be mainly used in the operation process of the air conditioner. The technical scheme provided in the embodiment can also be applied to the starting process of the air conditioner, and ensures that the air conditioner quickly and stably enters a normal working state. The air conditioner in the embodiment is in a starting process, which refers to a starting process of a compressor of the air conditioner from a stop state to an operating state, and the starting process includes but is not limited to: the starting process of the air conditioner after defrosting and the starting process of the air conditioner from a standing state to an operating state. And in the starting process of the air conditioner, controlling the first fan to operate at a third set rotating speed (third rotating speed, fourth rotating speed or fifth rotating speed) so as to ensure that the first pressure of the evaporator is quickly increased to a first set pressure or a lowest pressure threshold value, and controlling the first fan to operate according to the default set rotating speed when the first pressure of the evaporator is greater than or equal to the first set pressure or the lowest pressure threshold value.
In an optional embodiment, when the first ambient temperature is higher than the temperature of the evaporator, the control method of the air conditioner fan further includes: and when the air conditioner is in a starting process and one or two of the first environment temperature and the first exhaust temperature do not meet the set conditions, controlling the second fan to operate at a second rotating speed. In this embodiment, the first fan is operated at the first rotation speed, and the second fan is operated at the second rotation speed, so that the first pressure of the compressor can reach the first set pressure or the minimum pressure threshold value more quickly.
In an alternative embodiment, when the first rotation speed of the first fan and the second rotation speed of the second fan are controlled simultaneously, the variation of the first rotation speed of the first fan is controlled to be α × Δ N1, and the variation of the second rotation speed of the second fan is controlled to be (1- α) × Δ N2, where Δ N1 is the variation of the first rotation speed of the first fan required when the first pressure of the evaporator reaches the first set pressure if the first rotation speed of the first fan is changed alone, Δ N2 is the variation of the second rotation speed of the second fan required when the first pressure of the evaporator reaches the first set pressure if the second rotation speed of the second fan is changed alone, α is the distribution coefficient, and α is inversely related to the first discharge temperature of the compressor. By adopting the embodiment, the safety of the condenser can be ensured. The higher the first exhaust temperature is, the bigger the condenser pressure is, under this condition, the variable quantity of the first rotating speed of the first fan is reduced, the increment of the internal pressure of the condenser is reduced, the internal pressure of the condenser is ensured not to be overlarge, the first pressure of the evaporator is mainly adjusted through the second fan, on one hand, the first pressure of the evaporator is adjusted, on the other hand, the pressure of the condenser is ensured not to exceed the standard, and the safe operation of the air conditioner is ensured.
To further illustrate the main execution body of the control method, in an alternative embodiment, the control method of the air conditioner fan includes: when the controller determines that the first pressure of the evaporator is lower than or equal to a first set pressure, the controller determines a first rotating speed of a first fan according to one or more of the first pressure, a first environment temperature on the evaporator side and a first exhaust temperature of the compressor, and the controller controls the first fan to operate according to the first rotating speed, wherein the first fan is a fan on the condenser side.
According to a second aspect of the embodiments of the present invention, there is provided a control apparatus for an air conditioner blower.
As shown in fig. 3, in an alternative embodiment, the control device of the air conditioner fan includes: a first calculating module 31, configured to determine a first rotation speed of a first fan according to one or more of the first pressure, a first ambient temperature on an evaporator side, and a first discharge temperature of the compressor when it is determined that the first pressure of the evaporator is lower than or equal to a first set pressure, wherein the first fan is a fan on a condenser side; and a first control module 32 for controlling the first fan to operate according to the first rotational speed.
In an optional implementation manner, the first calculating module is specifically configured to: determining a first rotating speed of the first fan according to any one of the first pressure, a first environment temperature of the evaporator and a first exhaust temperature of the compressor; or determining the rotating speed of the first fan according to any two of the first pressure, the first environment temperature of the evaporator and the first exhaust temperature of the compressor; or determining the first rotating speed of the first fan according to the first pressure, the first environment temperature of the evaporator and the first exhaust temperature of the compressor.
In an alternative embodiment, the first pressure of the evaporator is the pressure at the low pressure end of the evaporator.
In an alternative embodiment, the first calculation module comprises: a first judgment unit for judging whether the first ambient temperature is lower than or equal to a first set ambient temperature; and a second judgment unit for judging whether the first exhaust temperature is lower than or equal to a first set exhaust temperature; and the first calculation unit is used for determining the first rotating speed in one or more first set rotating speeds when the first environment temperature is lower than or equal to the first set environment temperature and the first exhaust temperature is lower than or equal to the first set exhaust temperature.
In an alternative embodiment, the first set ambient temperature has the following relationship to the first set pressure: if the evaporation pressure of the refrigerant is taken as the first set pressure, the evaporation temperature of the refrigerant is taken as the first set environment temperature.
In an optional implementation manner, the first calculating module is specifically configured to: when it is determined that the first pressure of the evaporator is lower than or equal to the first set pressure, a first rotating speed of the first fan is determined according to one or more of first pressure change information, a first ambient temperature difference and a first exhaust temperature difference, wherein the first pressure change information comprises a first pressure difference and/or a first pressure change rate.
Further specifically, the first calculation module is configured to: when a first rotating speed is determined according to the first pressure difference, the first environment temperature difference and the first exhaust temperature difference, a first sub-rotating speed is determined according to the first pressure difference, a second sub-rotating speed is determined according to the first environment temperature difference, a third sub-rotating speed is determined according to the first exhaust temperature difference, the first rotating speed is the weighted sum of the first sub-rotating speed, the second sub-rotating speed and the third sub-rotating speed, wherein the weight of the first sub-rotating speed is greater than that of the second sub-rotating speed, and the weight of the second sub-rotating speed is greater than that of the third sub-rotating speed.
Further, the first calculation module is further configured to: and determining a correction coefficient of the first rotating speed according to the absolute value of the first pressure change rate, and multiplying the first rotating speed obtained in the above step by the correction coefficient to obtain the final first rotating speed, wherein the absolute value of the first change rate is positively correlated with the correction coefficient.
In an alternative embodiment, when the first pressure of the evaporator is higher than or equal to the first set pressure, the first rotation speed of the first fan is determined according to one or more of the first pressure variation information, the first ambient temperature variation information, and the first exhaust temperature variation information.
In an alternative embodiment, the control device further comprises: the second calculation module is used for determining a second rotating speed of a second fan according to one or more of the first pressure, the first environment temperature and the first exhaust temperature, wherein the second fan is a fan on the evaporator side; and the second control module is used for controlling the second fan to operate according to the second rotating speed.
In an alternative embodiment, the second fan is controlled in a manner opposite to that of the first fan. I.e. the first rotational speed of the first fan is inversely related to the second rotational speed of the second fan. If the first fan needs to increase the first rotating speed, the second fan needs to reduce the second rotating speed; if the first fan needs to reduce the first rotating speed, the second fan needs to increase the second rotating speed.
In an optional implementation manner, the second calculation module is specifically configured to determine the second rotation speed of the second fan according to one or more of first pressure change information, first environment temperature change information, and first exhaust temperature change information, where the first pressure change information includes a first pressure difference and/or a first pressure change rate, the first environment temperature change information includes a first environment temperature difference and/or a first environment temperature change rate, and the first exhaust temperature change information includes a first exhaust temperature difference and/or a first exhaust temperature change rate.
In an optional embodiment, the control device further comprises a third control module, which is used for controlling the first fan to operate at a third set rotating speed when the air conditioner is in a starting process and one or two of the first environment temperature and the first exhaust temperature do not meet the set conditions.
In an alternative embodiment, the third control module is specifically configured to: and when the air conditioner is in a starting process and the first environment temperature is lower than a first set temperature, controlling the first fan to operate at a third rotating speed.
In an alternative embodiment, the third control module is specifically configured to: and when the air conditioner is in a starting process and the exhaust temperature is lower than a second set temperature, controlling the first fan to operate at a fourth rotating speed.
In an alternative embodiment, the third control module is specifically configured to: and when the air conditioner is in a starting process, the first environment temperature is lower than a first set temperature, and the exhaust temperature is lower than a second set temperature, the first fan is controlled to operate at a fifth rotating speed.
In an alternative embodiment, when the first ambient temperature is higher than the temperature of the evaporator, the control device further comprises: and the fourth control module is used for controlling the second fan to operate at the second rotating speed when the air conditioner is in the starting process and one or two of the first environment temperature and the first exhaust temperature do not meet the set conditions.
In an optional implementation manner, the fourth control module is specifically configured to: when the first rotating speed of the first fan and the second rotating speed of the second fan are controlled simultaneously, the variation of the first rotating speed of the first fan is controlled to be alpha and delta N1, the variation of the second rotating speed of the second fan is controlled to be (1-alpha) and delta N2, wherein delta N1 is the variation of the first rotating speed of the first fan required when the first pressure of the evaporator reaches the first set pressure if the first rotating speed of the first fan is changed alone, delta N2 is the variation of the second rotating speed of the second fan required when the first pressure of the evaporator reaches the first set pressure, alpha is a distribution coefficient, and alpha is inversely related to the first exhaust temperature of the compressor.
In an alternative embodiment, the control device of the air conditioner fan is applied to a terminal or a server, and the control device includes: a processor; and a memory for storing processor-executable instructions, wherein the processor is configured to: when the first pressure of the evaporator is lower than or equal to a first set pressure, determining a first rotating speed of a first fan according to one or more of the first pressure, a first environment temperature on the evaporator side and a first exhaust temperature of the compressor, wherein the first fan is a fan on the condenser side; and controlling the first fan to operate according to the first rotating speed.
Optionally, the foregoing control method and apparatus for an air conditioner fan may be implemented in a network-side server, or implemented in a mobile terminal, or implemented in a dedicated control device.
In an alternative embodiment, a computer-readable storage medium is provided, on which a computer program is stored which, when being executed by a processor, carries out the method of the preceding paragraph. The computer readable storage medium includes a read Only memory rom (read Only memory), a random Access memory ram (random Access memory), a magnetic tape, an optical storage device, and the like.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention. It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the system and the apparatus described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
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.
Claims (8)
1. A control method of an air conditioner fan is characterized by comprising the following steps:
when the first pressure of the evaporator is lower than or equal to a first set pressure, determining a first rotating speed of a first fan according to one or more of the first pressure, a first environment temperature on the evaporator side and a first exhaust temperature of the compressor, wherein the first fan is a fan on the condenser side;
determining a correction coefficient of the first rotating speed according to the absolute value of the change rate of the first pressure, and obtaining a final first rotating speed by multiplying the first rotating speed by the correction coefficient;
determining a second rotating speed of a second fan according to one or more of the first pressure, the first environment temperature and the first exhaust temperature, wherein the second fan is a fan on the evaporator side;
controlling the first fan to operate according to the final first rotating speed;
controlling the second fan to operate according to the second rotating speed;
wherein the variation amount of the first rotation speed is α × Δ N1, the variation amount of the second rotation speed is (1- α) × Δ N2, α is inversely related to the first exhaust gas temperature, Δ N1 is a variation amount of the first rotation speed required when the first pressure reaches the first set pressure if the first rotation speed is changed alone, and Δ N2 is a variation amount of the second rotation speed required when the first pressure reaches the first set pressure if the second rotation speed is changed alone.
2. The control method of claim 1, wherein determining the first rotational speed of the first fan based on one or more of the first pressure, a first ambient temperature on an evaporator side, and a first discharge temperature of the compressor comprises:
judging whether the first environment temperature is lower than or equal to a first set environment temperature;
determining whether the first exhaust temperature is less than or equal to a first set exhaust temperature;
and when the first environment temperature is lower than or equal to a first set environment temperature and the first exhaust temperature is lower than or equal to a first set exhaust temperature, determining a first rotating speed in one or more first set rotating speeds.
3. The control method according to claim 1 or 2, characterized by further comprising:
and when the air conditioner is in a starting process and one or two of the first environment temperature and the first exhaust temperature do not meet set conditions, controlling the first fan to operate at a third set rotating speed.
4. A control device of an air conditioner fan is characterized by comprising:
the first calculation module is used for determining a first rotating speed of a first fan according to one or more of the first pressure, a first environment temperature on the evaporator side and a first exhaust temperature of the compressor when the first pressure of the evaporator is determined to be lower than or equal to a first set pressure, wherein the first fan is a fan on the condenser side; determining a correction coefficient of the first rotating speed according to the absolute value of the change rate of the first pressure, and obtaining a final first rotating speed by multiplying the first rotating speed by the correction coefficient;
the second calculation module is used for determining a second rotating speed of a second fan according to one or more of the first pressure, the first environment temperature and the first exhaust temperature, wherein the second fan is a fan on the evaporator side;
the first control module is used for controlling the first fan to operate according to the final first rotating speed;
the second control module is used for controlling the second fan to operate according to the second rotating speed;
wherein the variation amount of the first rotation speed is α × Δ N1, the variation amount of the second rotation speed is (1- α) × Δ N2, α is inversely related to the first exhaust gas temperature, Δ N1 is a variation amount of the first rotation speed required when the first pressure reaches the first set pressure if the first rotation speed is changed alone, and Δ N2 is a variation amount of the second rotation speed required when the first pressure reaches the first set pressure if the second rotation speed is changed alone.
5. The control apparatus of claim 4, wherein the first calculation module comprises:
a first judgment unit for judging whether the first ambient temperature is lower than or equal to a first set ambient temperature; and the combination of (a) and (b),
a second determination unit configured to determine whether the first exhaust temperature is lower than or equal to a first set exhaust temperature; and the combination of (a) and (b),
and the first calculation unit is used for determining a first rotating speed in one or more first set rotating speeds when the first environment temperature is lower than or equal to a first set environment temperature and the first exhaust temperature is lower than or equal to a first set exhaust temperature.
6. The control device of claim 4 or 5, further comprising a third control module configured to control the first fan to operate at a third set speed when the air conditioner is in a start-up process and one or both of the first ambient temperature and the first exhaust temperature do not satisfy a set condition.
7. The utility model provides a controlling means of air conditioner fan, is applied to terminal or server which characterized in that includes:
a processor; and the combination of (a) and (b),
a memory for storing processor-executable instructions;
wherein the processor is configured to:
when the first pressure of the evaporator is lower than or equal to a first set pressure, determining a first rotating speed of a first fan according to one or more of the first pressure, a first environment temperature on the evaporator side and a first exhaust temperature of the compressor, wherein the first fan is a fan on the condenser side; determining a correction coefficient of the first rotating speed according to the absolute value of the change rate of the first pressure, and obtaining a final first rotating speed by multiplying the first rotating speed by the correction coefficient;
determining a second rotating speed of a second fan according to one or more of the first pressure, the first environment temperature and the first exhaust temperature, wherein the second fan is a fan on the evaporator side;
controlling the first fan to operate according to the final first rotating speed;
controlling the second fan to operate according to the second rotating speed;
wherein the variation amount of the first rotation speed is α × Δ N1, the variation amount of the second rotation speed is (1- α) × Δ N2, α is inversely related to the first exhaust gas temperature, Δ N1 is a variation amount of the first rotation speed required when the first pressure reaches the first set pressure if the first rotation speed is changed alone, and Δ N2 is a variation amount of the second rotation speed required when the first pressure reaches the first set pressure if the second rotation speed is changed alone.
8. A computer-readable storage medium on which a computer program is stored, characterized in that the computer program realizes the control method of the air conditioner fan according to any one of claims 1 to 3 when being executed by a processor.
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| CN201810748023.9A CN110762784B (en) | 2018-07-10 | 2018-07-10 | Control method and device for air conditioner fan and computer readable storage medium |
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| CN105650817B (en) * | 2016-01-25 | 2018-09-04 | 美的集团武汉制冷设备有限公司 | Control method, control device and the air conditioner of air conditioner |
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| JP2004132572A (en) * | 2002-10-09 | 2004-04-30 | Daikin Ind Ltd | Air conditioner |
| CN200996705Y (en) * | 2007-01-09 | 2007-12-26 | 葛建民 | Forced heat exchanger of air-source hot-pump hot-water heater set |
| CN103216909A (en) * | 2013-04-01 | 2013-07-24 | 宁波奥克斯电气有限公司 | Control method of outdoor fan during heating of variable-frequency multi-connection type air conditioning unit |
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Effective date of registration: 20220110 Address after: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Patentee after: QINGDAO HAIER AIR-CONDITIONING ELECTRONIC Co.,Ltd. Patentee after: Haier Smart Home Co., Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Patentee before: QINGDAO HAIER AIR-CONDITIONING ELECTRONIC Co.,Ltd. |
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