CN118129291A - Control method and control device of air conditioner and air conditioner - Google Patents
Control method and control device of air conditioner and air conditioner Download PDFInfo
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- CN118129291A CN118129291A CN202211542903.3A CN202211542903A CN118129291A CN 118129291 A CN118129291 A CN 118129291A CN 202211542903 A CN202211542903 A CN 202211542903A CN 118129291 A CN118129291 A CN 118129291A
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Abstract
The invention provides a control method and device of an air conditioner and the air conditioner. The control method of the air conditioner comprises the following steps: step S1, receiving an instruction for controlling the PFC circuit in an air conditioner to be closed; step S2, judging whether the air conditioner meets a set condition, if so, controlling the PFC circuit to be closed; if not, the working parameters of the air conditioner are regulated to reduce the current of the compressor, and the step S2 is continuously executed until the PFC circuit is closed. According to the control method and the control device for the air conditioner and the air conditioner, the opening and closing control of the PFC circuit is optimized, so that excessive current fluctuation of the air conditioner can not occur after the PFC circuit is closed, and the risk of shutdown failure of the air conditioner is reduced or even avoided.
Description
Technical Field
The present invention relates to the field of electrical appliances, and in particular, to an air conditioner and an opening and closing control method and device for the same.
Background
In the related art, in a normal use state (such as a heating state or a cooling state) of an air conditioner, the PFC circuit is usually turned on or off by the magnitude of a compressor phase current, that is, the PFC circuit is turned on when the current is greater than a certain set value, and the PFC circuit is turned off when the current is less than a certain set value.
However, the above-mentioned conventional PFC circuit control method is only suitable for a normal use state of an air conditioner, but cannot be suitable for some special use states or test development states of the air conditioner, for example, when the air conditioner is in a test development stage, if a tester needs to perform a rated constant frequency test on the air conditioner, the air conditioner will forcibly issue an instruction to close the PFC circuit, and if the PFC circuit is directly closed in this state, the working current of the air conditioner will become unstable, and irregular up-down fluctuation changes easily occur, so that shutdown failure of the air conditioner is very easy to occur, and further the test is failed. For example, in order to improve energy efficiency data, the PFC circuit is forced to be turned off in variable frequency driving parameters under the working conditions of rated refrigeration and the like, so that the air conditioner is directly switched under high frequency to generate shutdown.
Disclosure of Invention
The invention provides a control method and a control device of an air conditioner and the air conditioner, which are used for solving the defect that the air conditioner is easy to stop in the prior art, and realizing the following technical effects: the switching control of the PFC circuit is optimized, so that excessive current fluctuation of the air conditioner can not occur after the PFC circuit is closed, and the risk of shutdown failure of the air conditioner is reduced or even avoided.
According to an embodiment of the first aspect of the present invention, a control method of an air conditioner includes:
Step S1, receiving an instruction for controlling the PFC circuit in an air conditioner to be closed;
Step S2, judging whether the air conditioner meets a set condition, if so, controlling the PFC circuit to be closed; if not, the working parameters of the air conditioner are regulated to reduce the current of the compressor, and the step S2 is continuously executed until the PFC circuit is closed.
According to one embodiment of the present invention, the set condition includes at least one of a voltage condition, a frequency condition, and a current condition, wherein the voltage condition is that a bus voltage value of the PFC circuit is less than or equal to a set voltage value, the frequency condition is that an operating frequency of a compressor in the air conditioner is less than a set frequency, and the current condition is that a current value of the compressor is less than a set current value.
According to one embodiment of the present invention, in the step S2, the step of adjusting the operation parameter of the air conditioner to reduce the circuit of the PFC circuit specifically includes:
and controlling the compressor to perform a frequency-reducing operation, and/or controlling the opening degree of the electronic expansion valve to be increased so as to reduce the current value of the compressor.
According to an embodiment of the present invention, if not, the working parameters of the air conditioner are adjusted to reduce the current of the compressor, and the step S2 is continuously performed until the PFC circuit is turned off, which specifically includes:
and determining that the working frequency of the compressor is greater than or equal to the set frequency, controlling the compressor to execute the frequency-reducing operation until the working frequency of the compressor is smaller than the set frequency, and controlling the PFC circuit to be closed.
According to an embodiment of the present invention, if not, the working parameters of the air conditioner are adjusted to reduce the current of the compressor, and the step S2 is continuously performed until the PFC circuit is turned off, which specifically includes:
Determining that the working frequency of a compressor is greater than or equal to the set frequency, controlling the compressor to execute the frequency-reducing operation, and acquiring a bus voltage value of the PFC circuit in the process of executing the frequency-reducing operation by the compressor;
Judging whether the bus voltage value is smaller than or equal to the set voltage value, if so, closing the PFC circuit; if not, continuing to execute the frequency-reducing operation until the bus voltage value is smaller than or equal to the set voltage value, and closing the PFC circuit.
According to one embodiment of the present invention, the down-conversion operation includes: and controlling the working frequency of the compressor to reduce the set down-conversion frequency at intervals.
According to one embodiment of the present invention, the step S2 specifically includes:
Judging whether the air conditioner meets the frequency condition, if so, closing the PFC circuit; if not, controlling the compressor to execute the frequency-reducing operation, and controlling the opening degree of the PFC circuit to be reduced in the process of executing the frequency-reducing operation until the opening degree of the PFC circuit is reduced to zero, or closing the PFC after the air conditioner meets the frequency condition or the voltage condition.
According to one embodiment of the present invention, the step of controlling the compressor to perform a frequency-reducing operation and controlling the opening degree of the PFC circuit to be reduced during the frequency-reducing operation specifically includes:
and controlling the compressor to reduce the set working frequency at intervals, and simultaneously controlling the PFC circuit to reduce the set working opening at intervals.
According to an embodiment of the present invention, if not, the working parameters of the air conditioner are adjusted to reduce the current of the compressor, and the step S2 is continuously performed until the PFC circuit is turned off, which specifically includes:
And determining that the current value of the compressor is larger than or equal to the set current value, controlling the opening of the electronic expansion valve to be increased to a preset valve opening and maintaining a set opening duration, and controlling the PFC circuit to be closed until the current value of the compressor is smaller than the set current value.
According to one embodiment of the present invention, the preset valve opening is a maximum opening of the electronic expansion valve.
According to a second aspect of the present invention, a control device for an air conditioner includes:
The first receiving module is used for receiving an instruction for controlling the PFC circuit in the air conditioner to be closed;
the first execution module is used for judging whether the air conditioner meets the set conditions, and if yes, the PFC circuit is controlled to be closed; if not, the working parameters of the air conditioner are regulated to reduce the current of the compressor, and the step is continuously executed until the PFC circuit is closed.
An air conditioner according to an embodiment of a third aspect of the present invention includes:
A controller for executing the control method of the air conditioner according to the embodiment of the first aspect of the present invention or the control device of the air conditioner according to the embodiment of the second aspect of the present invention;
The air conditioner body comprises a PFC circuit and a refrigerating system, wherein the refrigerating system comprises a compressor and an electronic expansion valve.
According to the control method and the control device for the air conditioner and the air conditioner, through optimizing the opening and closing control of the PFC circuit, the air conditioner cannot generate excessive current fluctuation after the PFC circuit is closed, so that the risk of shutdown failure of the air conditioner is reduced or even avoided.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic step diagram of a control method of an air conditioner according to the present invention;
fig. 2 is a schematic structural view of a control device of an air conditioner according to the present invention;
fig. 3 is a schematic structural diagram of an electronic device provided by the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The control method of the air conditioner, the opening and closing control device and the air conditioner according to the present invention are described below with reference to the accompanying drawings. Before the embodiments of the present invention are described in detail, the entire application scenario is described. The control method and the opening and closing control device of the air conditioner can be applied to the local air conditioner, cloud platforms in the field of the Internet, cloud platforms in the field of other kinds of Internet, or third party equipment. The third party device may include a mobile phone, a tablet computer, a notebook computer, a vehicle-mounted computer, and other intelligent terminals.
The following description will only take an example of an opening and closing control method of a PFC circuit applied to an air conditioner, and it should be understood that the opening and closing control method of the embodiment of the present invention may also be applied to a cloud platform and a third party device.
It will be appreciated that the english for PFC is all called "Power Factor Correction", meaning "power factor correction", power factor refers to the relationship between the effective power and the total power consumption (apparent power), i.e. the ratio of the effective power divided by the total power consumption (apparent power). Basically, the power factor can measure the extent to which the power is effectively utilized, and when the power factor value is larger, the power utilization rate is represented to be higher, that is, the PFC circuit can be used for improving the power factor.
Before describing the control method of the air conditioner of the first aspect of the present invention, the defects in the related art will be described first, thereby highlighting the difference between the method of the present invention and the control method in the related art and the improvement effect thereof.
In the related art, in a normal use state (such as a heating state or a cooling state) of an air conditioner, the PFC circuit is usually turned on or off by the magnitude of a compressor phase current, that is, the PFC circuit is turned on when the current is greater than a certain set value, and the PFC circuit is turned off when the current is less than a certain set value.
However, the above-mentioned conventional PFC circuit control method is only suitable for a normal use state of an air conditioner, but cannot be suitable for some special use states or test development states of the air conditioner, for example, when the air conditioner is in a test development stage, if a tester needs to perform a rated constant frequency test on the air conditioner, the air conditioner will forcibly issue an instruction to close the PFC circuit, and if the PFC circuit is directly closed in this state, the working current of the air conditioner will become unstable, and irregular up-down fluctuation changes easily occur, so that shutdown failure of the air conditioner is very easy to occur, and further the test is failed. For example, in order to improve energy efficiency data, the PFC circuit is forced to be turned off in variable frequency driving parameters under the working conditions of rated refrigeration and the like, so that the air conditioner is directly switched under high frequency to generate shutdown.
As shown in fig. 1, in order to solve the technical defect existing in the related art and avoid the fault of error shutdown when the PFC circuit is turned off, the present invention proposes a control method of an air conditioner, wherein the on-off control method includes the following steps:
Step S1, receiving an instruction for controlling the PFC circuit in an air conditioner to be closed;
Step S2, judging whether the air conditioner meets the set condition, if so, controlling the PFC circuit to be closed; if not, the working parameters of the air conditioner are adjusted to enable the current of the compressor to be reduced, and the step S2 is continuously executed until the PFC circuit is closed.
According to the control method of the air conditioner of the embodiment of the present invention, in step S1, when the controller receives the instruction for controlling the PFC circuit to be turned off, the controller does not select to turn off the PFC circuit immediately, but continues to perform step S2. In step S2, the controller determines whether the air conditioner satisfies a preset setting condition, and if it is determined that the air conditioner satisfies the setting condition, it is proved that the current value of the compressor is in a lower interval range at this time, and the controller may directly execute the instruction in step S1 to immediately turn off the PFC circuit. It can be appreciated that when the current value of the compressor is small, the fluctuation of the current change of the compressor is small under the condition that the PFC circuit is turned off, so that the operation state of the compressor is also stable, and no or very few faults of shutdown occur.
In step S2, if the controller determines that the air conditioner does not meet the set condition, it is proved that the current value of the compressor is in a higher interval range, and the controller needs to adjust the working parameters of the air conditioner, so as to achieve the purpose of reducing the current value of the compressor. Further, in the process of adjusting the working parameters of the air conditioner, the current value of the compressor is continuously reduced, so that the air conditioner is adjusted to a state meeting the set conditions. Further, after the operation of adjusting the working parameters of the air conditioner is completed, the air conditioner meets the set condition, and the current value of the compressor is in a lower interval range at this time, so the controller can directly execute the instruction in the step S1 to close the PFC circuit, and thus, the air conditioner will not generate excessive current fluctuation after the PFC circuit is closed, and the risk of shutdown failure of the air conditioner is reduced or even avoided.
It should be explained that the above setting conditions include, but are not limited to, the limiting conditions for parameters such as bus voltage, frequency or current of the compressor, when the air conditioner meets the above setting conditions, it is proved that the current of the compressor in the air conditioner is in a lower interval range, at this time, the fluctuation amplitude of the current generated by closing the PFC circuit is smaller, and the risk of shutdown of the air conditioner is smaller; when the air conditioner does not meet the set condition, it is proved that the current of the compressor in the air conditioner is in a higher interval range, and at this time, the working parameters of the air conditioner need to be further adjusted, so that the current value of the compressor is reduced to reach a lower interval range (that is, the air conditioner meets the set condition), and the shutdown risk caused by closing the PFC circuit is reduced or even avoided, where the operation of adjusting the working parameters of the air conditioner includes, but is not limited to, operations of reducing the frequency of the compressor or increasing the opening of the electronic expansion valve, and the like.
According to one specific embodiment of the invention, the set condition includes at least one of a voltage condition, a frequency condition and a current condition, wherein the voltage condition is that a bus voltage value of the PFC circuit is less than or equal to a set voltage value, the frequency condition is that an operating frequency of a compressor in the air conditioner is less than the set frequency, and the current condition is that a current value of the compressor is less than the set current value.
It can be understood that the above voltage condition, frequency condition and current condition can indicate that the current of the compressor in the air conditioner is in a lower interval range, so that when the air conditioner meets at least one of the above voltage condition, frequency condition and current condition, the controller can directly execute the instruction in step S1 to turn off the PFC circuit, thereby reducing or even avoiding the risk of shutdown of the air conditioner caused by turning off the PFC circuit.
In the present embodiment, the setting conditions may be set to any one, any two, or all three of the above-described voltage conditions, frequency conditions, and current conditions in different scene cases. Of course, the setting condition may include other conditions, and the present invention is not particularly limited herein, as long as the setting condition may indicate a range of magnitudes of current values of the compressor.
Further, in step S2, the step of adjusting the operating parameter of the air conditioner to reduce the circuit of the PFC circuit specifically includes:
and controlling the compressor to perform a frequency-reducing operation, and/or controlling the opening degree of the electronic expansion valve to be increased so as to reduce the current value of the compressor.
It will be appreciated that in this embodiment, the reduction of the current value of the compressor can be achieved by controlling the compressor to perform the frequency-reducing operation and controlling the opening of the electronic expansion valve to increase, so that by adjusting the operating frequency of the compressor and the opening of the electronic expansion valve, the current value of the compressor can be adjusted to a lower interval range, so that the shutdown risk of the air conditioner is less when the PFC circuit is turned off at this time.
According to one embodiment of the present invention, in step S2, if no, the working parameters of the air conditioner are adjusted to reduce the current of the compressor, and step S2 is continuously performed until the PFC circuit is turned off, which specifically includes:
and determining that the working frequency of the compressor is greater than or equal to the set frequency, controlling the compressor to execute the frequency-reducing operation until the working frequency of the compressor is smaller than the set frequency, and controlling the PFC circuit to be closed.
In the present embodiment, the setting condition is set as a frequency condition, and the step of adjusting the operation parameter of the air conditioner such that the circuit of the PFC circuit is reduced includes controlling the compressor to perform a down-conversion operation.
It should be explained that the above-mentioned set frequency may be a certain frequency value preset by a user, or may be a certain frequency value set by default in the system.
According to another embodiment of the present invention, in step S2, if not, the working parameters of the air conditioner are adjusted to reduce the current of the compressor, and step S2 is continuously performed until the PFC circuit is turned off, which specifically includes:
Determining that the working frequency of the compressor is greater than or equal to a set frequency, controlling the compressor to execute the frequency-reducing operation, and acquiring a bus voltage value of the PFC circuit in the process of executing the frequency-reducing operation by the compressor;
judging whether the bus voltage value is smaller than or equal to the set voltage value, if so, closing the PFC circuit; if not, continuing to execute the frequency reduction operation until the bus voltage value is smaller than or equal to the set voltage value, and closing the PFC circuit.
In the present embodiment, the setting conditions are set to a frequency condition and a voltage condition, and the step of adjusting the operation parameters of the air conditioner such that the circuit of the PFC circuit is reduced includes controlling the compressor to perform a down-conversion operation.
It should be explained that the set voltage value may be a certain voltage value preset by a user or a certain voltage value default set in the system, and the method for obtaining the set voltage value and the specific value are not limited in particular, and the set voltage value may be set to different values based on different usage scenarios.
For example, after the controller receives an instruction for controlling the PFC circuit to be turned off, the controller obtains the operating frequency of the compressor, if the operating frequency of the compressor is smaller than the set frequency, the controller directly turns off the PFC circuit, if the operating frequency of the compressor is greater than or equal to the set frequency, the controller controls the compressor to perform frequency reduction, and continuously obtains a current bus voltage value in frequency reduction operation, when the controller determines that the current bus voltage value is less than or equal to 330V, the controller directly turns off the PFC circuit, when the controller determines that the current bus voltage value is greater than 330V, the controller continues to perform frequency reduction operation on the compressor until the bus voltage value is less than or equal to 330V, and then the controller stops the frequency reduction operation and turns off the PFC circuit.
Further, for the down-conversion operation described in the above two embodiments, the down-conversion operation includes: and controlling the working frequency of the compressor to reduce the set down-conversion frequency at intervals.
Therefore, the frequency of the compressor is controlled to be gently and stepwise decreased, the stability of the operation process of the compressor is ensured, and the working failure of the compressor caused by too fast frequency decrease is avoided.
In some embodiments, the set interval duration may be 2s, and the set frequency down may be 1Hz, that is, the frequency down operation is to control the operating frequency of the compressor to decrease by 1Hz every 2 s. Of course, the above embodiment is only one of the numerous embodiments of the present invention, and does not constitute a specific limitation on the set interval duration and the set down-conversion frequency of the present invention, and the set interval duration and the set down-conversion frequency may be set to other values, which is not a specific limitation herein.
According to one embodiment of the present invention, step S2 specifically includes:
Judging whether the air conditioner meets the frequency condition, if so, closing the PFC circuit; if not, the compressor is controlled to execute the frequency-reducing operation, and the opening degree of the PFC circuit is controlled to be reduced in the process of executing the frequency-reducing operation until the opening degree of the PFC circuit is reduced to zero, or until the air conditioner meets the frequency condition or the voltage condition, the PFC is closed.
In this embodiment, when the controller performs the frequency-reducing operation on the compressor, the controller also reduces the opening of the PFC circuit according to the frequency reduction amount of the compressor, so that the closing process of the PFC circuit becomes a step-like slow closing process, that is, the opening of the PFC circuit decreases with the decrease of the operating frequency of the compressor until the control meets the frequency condition or the voltage adjustment, or until the opening of the PFC circuit is first reduced to zero and then the PFC circuit is closed.
Therefore, the PFC circuit is not closed immediately, but is closed slowly according to the reduction of the frequency of the compressor, so that the compressor can adapt to current change caused by closing of the PFC circuit, faults such as shutdown of the compressor are avoided, and the risk of shutdown faults of an air conditioner is reduced or even avoided.
Further, the step of controlling the compressor to perform the frequency-reducing operation and controlling the opening degree of the PFC circuit to be reduced in the process of performing the frequency-reducing operation specifically includes:
and controlling the compressor to reduce the set working frequency at intervals, and simultaneously controlling the PFC circuit to reduce the set working opening at intervals.
Therefore, the opening degree change of the PFC circuit can be changed along with the change of the working frequency of the compressor, so that the compressor can adapt to the current change caused by closing of the PFC circuit, and the shutdown fault of the air conditioner caused by the sudden closing of the PFC circuit is avoided.
According to one embodiment of the present invention, in step S2, if no, the working parameters of the air conditioner are adjusted to reduce the current of the compressor, and step S2 is continuously performed until the PFC circuit is turned off, which specifically includes:
and determining that the current value of the compressor is larger than or equal to a set current value, controlling the opening of the electronic expansion valve to be increased to a preset valve opening, maintaining the set opening time, and controlling the PFC circuit to be closed after the current value of the compressor is smaller than the set current value.
In the present embodiment, the setting condition is set as a current condition, and the step of adjusting the operation parameter of the air conditioner such that the circuit of the PFC circuit is reduced includes controlling the opening degree of the electronic expansion valve to be increased.
It should be explained that the preset valve opening may be a certain opening value preset by a user, or may be a certain opening value preset in a system, and the method for obtaining the preset valve opening and the specific value of the preset valve opening are not limited in particular, and the preset valve opening may be set to different opening values based on different usage scenarios.
For example, the preset valve opening is the maximum opening of the electronic expansion valve.
The control device of the air conditioner provided by the invention is described below, and the control device of the air conditioner described below and the control method of the air conditioner described above can be referred to correspondingly.
As shown in fig. 2, a control device of an air conditioner according to an embodiment of a second aspect of the present invention includes:
The first receiving module 110 is configured to receive an instruction for controlling the PFC circuit in the air conditioner to be turned off;
the first execution module 120 is configured to determine whether the air conditioner meets a set condition, and if yes, control the PFC circuit to be turned off; if not, the working parameters of the air conditioner are adjusted to enable the current of the compressor to be reduced, and the step S2 is continuously executed until the PFC circuit is closed.
According to the control device of the air conditioner, disclosed by the embodiment of the invention, the opening and closing control of the PFC circuit is optimized, so that the air conditioner cannot generate excessive current fluctuation after the PFC circuit is closed, and the risk of shutdown fault of the air conditioner is reduced or even avoided.
An air conditioner according to an embodiment of the third aspect of the present invention includes a controller or a control device of an air conditioner according to an embodiment of the second aspect of the present invention, and further includes an air conditioner body.
The air conditioner body comprises a PFC circuit and a refrigerating system, wherein the refrigerating system comprises a compressor and an electronic expansion valve. The controller is configured to execute the control method of the air conditioner described in the embodiment of the first aspect of the present invention.
According to the air conditioner disclosed by the embodiment of the invention, the opening and closing control of the PFC circuit is optimized, so that the air conditioner cannot generate excessive current fluctuation after the PFC circuit is closed, and the risk of shutdown fault of the air conditioner is reduced or even avoided.
Fig. 3 illustrates a physical schematic diagram of an electronic device, as shown in fig. 3, where the electronic device may include: processor 810, communication interface (Communications Interface) 820, memory 830, and communication bus 840, wherein processor 810, communication interface 820, memory 830 accomplish communication with each other through communication bus 840. The processor 810 may call logic instructions in the memory 830 to perform the control method of the air conditioner above.
Further, the logic instructions in the memory 830 described above may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as a stand-alone product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method of the embodiments of the present invention. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product comprising a computer program, the computer program being storable on a non-transitory computer readable storage medium, the computer program, when executed by a processor, being capable of executing the method of controlling an air conditioner as above.
In yet another aspect, the present invention also provides a non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, is implemented to perform the control method of the air conditioner above.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (12)
1. A control method of an air conditioner, comprising:
Step S1, receiving an instruction for controlling the PFC circuit in an air conditioner to be closed;
Step S2, judging whether the air conditioner meets a set condition, if so, controlling the PFC circuit to be closed; if not, the working parameters of the air conditioner are regulated to reduce the current of the compressor, and the step S2 is continuously executed until the PFC circuit is closed.
2. The method according to claim 1, wherein the set condition includes at least one of a voltage condition, a frequency condition, and a current condition, wherein the voltage condition is that a bus voltage value of the PFC circuit is equal to or less than a set voltage value, the frequency condition is that an operating frequency of a compressor in the air conditioner is less than a set frequency, and the current condition is that a current value of the compressor is less than a set current value.
3. The method according to claim 2, wherein in the step S2, the step of adjusting the operation parameters of the air conditioner so that the circuit of the PFC circuit is reduced specifically includes:
and controlling the compressor to perform a frequency-reducing operation, and/or controlling the opening degree of the electronic expansion valve to be increased so as to reduce the current value of the compressor.
4. The method according to claim 3, wherein if not, adjusting the working parameters of the air conditioner to reduce the current of the compressor, and continuing to execute the step S2 until the PFC circuit is turned off, specifically comprising:
and determining that the working frequency of the compressor is greater than or equal to the set frequency, controlling the compressor to execute the frequency-reducing operation until the working frequency of the compressor is smaller than the set frequency, and controlling the PFC circuit to be closed.
5. The method according to claim 3, wherein if not, adjusting the working parameters of the air conditioner to reduce the current of the compressor, and continuing to execute the step S2 until the PFC circuit is turned off, specifically comprising:
Determining that the working frequency of a compressor is greater than or equal to the set frequency, controlling the compressor to execute the frequency-reducing operation, and acquiring a bus voltage value of the PFC circuit in the process of executing the frequency-reducing operation by the compressor;
Judging whether the bus voltage value is smaller than or equal to the set voltage value, if so, closing the PFC circuit; if not, continuing to execute the frequency-reducing operation until the bus voltage value is smaller than or equal to the set voltage value, and closing the PFC circuit.
6. The control method of an air conditioner according to claim 4 or 5, wherein the down-conversion operation includes: and controlling the working frequency of the compressor to reduce the set down-conversion frequency at intervals.
7. The method according to claim 3, wherein the step S2 specifically includes:
Judging whether the air conditioner meets the frequency condition, if so, closing the PFC circuit; if not, controlling the compressor to execute the frequency-reducing operation, and controlling the opening degree of the PFC circuit to be reduced in the process of executing the frequency-reducing operation until the opening degree of the PFC circuit is reduced to zero, or closing the PFC after the air conditioner meets the frequency condition or the voltage condition.
8. The method according to claim 7, wherein the step of controlling the compressor to perform a frequency-reducing operation and controlling the opening degree of the PFC circuit to be reduced during the frequency-reducing operation, comprises:
and controlling the compressor to reduce the set working frequency at intervals, and simultaneously controlling the PFC circuit to reduce the set working opening at intervals.
9. The method according to claim 3, wherein if not, adjusting the working parameters of the air conditioner to reduce the current of the compressor, and continuing to execute the step S2 until the PFC circuit is turned off, specifically comprising:
And determining that the current value of the compressor is larger than or equal to the set current value, controlling the opening of the electronic expansion valve to be increased to a preset valve opening and maintaining a set opening duration, and controlling the PFC circuit to be closed until the current value of the compressor is smaller than the set current value.
10. The control method of an air conditioner according to claim 9, wherein the preset valve opening is a maximum opening of the electronic expansion valve.
11. A control device of an air conditioner, comprising:
The first receiving module is used for receiving an instruction for controlling the PFC circuit in the air conditioner to be closed;
the first execution module is used for judging whether the air conditioner meets the set conditions, and if yes, the PFC circuit is controlled to be closed; if not, the working parameters of the air conditioner are regulated to reduce the current of the compressor, and the step is continuously executed until the PFC circuit is closed.
12. An air conditioner, comprising:
A controller for executing the control method of the air conditioner according to any one of the above claims 1 to 10, or the control device of the air conditioner according to claim 11;
The air conditioner body comprises a PFC circuit and a refrigerating system, wherein the refrigerating system comprises a compressor and an electronic expansion valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211542903.3A CN118129291A (en) | 2022-12-02 | 2022-12-02 | Control method and control device of air conditioner and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211542903.3A CN118129291A (en) | 2022-12-02 | 2022-12-02 | Control method and control device of air conditioner and air conditioner |
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| CN118129291A true CN118129291A (en) | 2024-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211542903.3A Pending CN118129291A (en) | 2022-12-02 | 2022-12-02 | Control method and control device of air conditioner and air conditioner |
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| Country | Link |
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| CN (1) | CN118129291A (en) |
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- 2022-12-02 CN CN202211542903.3A patent/CN118129291A/en active Pending
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