CN117212954A - Air conditioner and overpressure protection method, device and medium - Google Patents
Air conditioner and overpressure protection method, device and medium Download PDFInfo
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- CN117212954A CN117212954A CN202311061951.5A CN202311061951A CN117212954A CN 117212954 A CN117212954 A CN 117212954A CN 202311061951 A CN202311061951 A CN 202311061951A CN 117212954 A CN117212954 A CN 117212954A
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- 238000000034 method Methods 0.000 title claims abstract description 70
- 238000010438 heat treatment Methods 0.000 claims abstract description 22
- 239000003507 refrigerant Substances 0.000 claims description 32
- 238000012545 processing Methods 0.000 claims description 17
- 238000001704 evaporation Methods 0.000 claims description 10
- 238000005057 refrigeration Methods 0.000 claims description 7
- 238000004590 computer program Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 abstract description 6
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- 230000005494 condensation Effects 0.000 description 6
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- 238000004378 air conditioning Methods 0.000 description 2
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The application relates to an air conditioner, an overpressure protection method, an overpressure protection device and a medium. The method is applied to an air conditioner, the air conditioner comprises a compressor, an inner fan and an outer fan, and when the air conditioner is in an operating state, the method comprises the steps of obtaining the exhaust pressure of the compressor and judging whether the exhaust pressure is greater than or equal to a first preset pressure; if yes, a current running mode of the air conditioner is obtained, and the rotating speeds of the inner fan and the outer fan are adjusted according to the current running mode so as to reduce exhaust pressure, wherein the current running mode is a heating mode or a refrigerating mode. According to the method, whether the air conditioner is in a high-pressure state is judged through the relation between the exhaust pressure of the compressor and the first preset pressure, and when the system pressure is abnormal, different pressure adjusting modes are adopted for the current running mode of the air conditioner, namely the rotating speed of the inner fan is increased and the rotating speed of the outer fan is reduced in a heating mode, and the rotating speed of the inner fan is reduced and the rotating speed of the outer fan is increased in a cooling mode.
Description
Technical Field
The application belongs to the field of intelligent electrical appliances, and particularly relates to an air conditioner and an overpressure protection method, device and medium.
Background
Air conditioners play a very important role in the life of people, and people can open the air conditioner to operate in a corresponding mode in winter with severe cold or summer with severe heat so as to provide comfortable indoor temperature. In order to maintain or improve comfort for a short period of time, people continuously operate the air conditioner for a long time or with high strength, but this may cause the air conditioner to overload operation, shortening the service life of the air conditioner.
In the prior art, an overload protection method is configured for an air conditioner, whether the air conditioner works in overload is judged mainly by detecting the temperature and the current of exhaust gas, and then the system load is reduced by frequency reduction.
However, the above detection method is not accurate enough, and there may be cases where the compressor discharge temperature and current are at the standard but the compressor is still overloaded.
Disclosure of Invention
In order to solve the problems in the prior art, namely to facilitate accurate knowing of the operation condition inside the compressor and realize overpressure protection of the air conditioner, the application provides the air conditioner, and an overpressure protection method, device and medium.
In a first aspect, the present application provides an overpressure protection method applied to an air conditioner, the air conditioner including a compressor, an inner fan and an outer fan, the method comprising:
when the air conditioner is in an operating state, acquiring the exhaust pressure of the compressor, and judging whether the exhaust pressure is greater than or equal to a first preset pressure or not;
if yes, a current running mode of the air conditioner is obtained, and the rotating speeds of the inner fan and the outer fan are adjusted according to the current running mode so as to reduce exhaust pressure, wherein the current running mode is a heating mode or a refrigerating mode.
In one possible implementation, after the adjusting the rotational speeds of the inner fan and the outer fan according to the current operation mode to reduce the exhaust pressure, the method further includes:
obtaining the instantaneous exhaust pressure of the compressor according to a preset period;
and determining whether to reduce the operating frequency of the compressor according to the instantaneous discharge pressure and a second preset pressure, wherein the second preset pressure is larger than the first preset pressure.
In one possible implementation, the determining whether to reduce the operating frequency of the compressor according to the instantaneous discharge pressure and a second preset pressure includes:
judging whether the instantaneous exhaust pressure is more than or equal to a second preset pressure;
if yes, performing decrementing treatment on the current operating frequency according to the preset decrementing amount to obtain a new operating frequency, and continuously acquiring the instantaneous exhaust pressure according to a preset period;
if not, the current operating frequency is kept continuously, and the instantaneous exhaust pressure is obtained continuously according to the preset period.
In one possible implementation, the method further includes:
and if the new operation frequency is lower than the preset minimum operation frequency, controlling the air conditioner to enter a stop state.
In one possible implementation manner, the adjusting the rotation speeds of the inner fan and the outer fan according to the current operation mode includes:
when the current operation mode is a heating mode, the rotating speed of the inner fan is increased, and the rotating speed of the outer fan is reduced;
and when the current operation mode is a refrigeration mode, reducing the rotating speed of the inner fan and increasing the rotating speed of the outer fan.
In one possible implementation, the method further includes:
when the air conditioner is in a standby state, acquiring the suction pressure and the discharge pressure of the compressor;
and if the suction pressure is equal to the exhaust pressure and is smaller than a third preset pressure, outputting first prompt information, wherein the first prompt information is used for prompting the shortage of the refrigerant, and the third preset pressure is larger than the atmospheric pressure.
In one possible implementation, the method further includes:
when the air conditioner is in an operating state, acquiring the suction pressure of the compressor;
and if the suction pressure is equal to the discharge pressure and is equal to the atmospheric pressure, controlling the air conditioner to enter a stop state so as to prevent the sucked air from damaging the compressor, and outputting second prompt information, wherein the second prompt information is used for prompting complete leakage of the refrigerant.
In a second aspect, the present application provides an overpressure protection apparatus for an air conditioner including a compressor, an inner fan and an outer fan, the apparatus comprising:
the first processing module is used for acquiring the exhaust pressure of the compressor when the air conditioner is in an operating state and judging whether the exhaust pressure is greater than or equal to a first preset pressure or not;
and the second processing module is used for acquiring the current running mode of the air conditioner if the air conditioner is in the first running mode, and adjusting the rotating speeds of the inner fan and the outer fan according to the current running mode so as to reduce the exhaust pressure, wherein the current running mode is a heating mode or a refrigerating mode.
In a third aspect, the application provides an air conditioner, which comprises a compressor, an indoor heat exchanger and an outdoor heat exchanger, wherein an inner fan is arranged in the indoor heat exchanger, an outer fan is arranged in the outdoor heat exchanger, and the air conditioner further comprises at least one processor and a memory;
the compressor is used for compressing the refrigerant from the outdoor heat exchanger or the indoor heat exchanger;
the indoor heat exchanger is used for condensing the refrigerant from the compressor or evaporating the refrigerant from the outdoor heat exchanger;
the outdoor heat exchanger is used for evaporating the refrigerant from the indoor heat exchanger or condensing the refrigerant from the compressor;
the inner fan is used for sucking air into the indoor heat exchanger;
the external fan is used for sucking air into the outdoor heat exchanger;
the compressor, the inner fan and the outer fan are respectively connected with the at least one processor;
the memory stores computer-executable instructions;
the at least one processor executes computer-executable instructions stored in the memory, causing the at least one processor to perform the over-voltage protection method as described above.
In a fourth aspect, the present application provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the over-pressure protection method as described above.
When the air conditioner is in an operation state, the air conditioner and the overpressure protection method, device and medium provided by the application acquire the exhaust pressure of the compressor and judge whether the exhaust pressure is greater than or equal to a first preset pressure; if yes, a current running mode of the air conditioner is obtained, and the rotating speeds of the inner fan and the outer fan are adjusted according to the current running mode so as to reduce exhaust pressure, wherein the current running mode is a heating mode or a refrigerating mode. In the method, whether the air conditioner is in a high-pressure state is judged directly through the relation between the exhaust pressure of the compressor and the first preset pressure, and when the system pressure is abnormal, a corresponding pressure adjusting mode is adopted for the current running mode of the air conditioner, namely, the rotating speed of the inner fan is increased and the rotating speed of the outer fan is reduced in a heating mode, and the rotating speed of the inner fan is reduced and the rotating speed of the outer fan is increased in a cooling mode, so that the overpressure work of the air conditioner is avoided, and running faults and the reduction of the service lives of parts are avoided.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
Fig. 1 is a schematic view of a scenario of an air conditioner according to an embodiment of the present application;
FIG. 2 is a flowchart illustrating a method for protecting against over-pressure according to an embodiment of the present application;
FIG. 3 is a second flowchart of an over-pressure protection method according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of an overpressure protection apparatus according to an embodiment of the present application;
fig. 5 is a schematic hardware diagram of an air conditioner according to an embodiment of the present application.
Specific embodiments of the present application have been shown by way of the above drawings and will be described in more detail below. The drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but rather to illustrate the inventive concepts to those skilled in the art by reference to the specific embodiments.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application 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 application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented, for example, in sequences other than those illustrated or otherwise described herein.
In embodiments of the application, words such as "exemplary" or "such as" are used to mean examples, illustrations, or descriptions. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.
With the development of intelligent appliances and the improvement of life quality of people, the use frequency of people to air conditioning equipment is also higher and higher. When the environment temperature is not suitable, a user can blow out comfortable wind only by starting the air conditioner to operate in a proper mode, so that the comfort level of the indoor environment is improved. In order to prevent the overload operation of the air conditioner and further shorten the service life of various internal parts, the prior art generally judges whether the system is overloaded by detecting the exhaust temperature and current, and then reduces the frequency of the compressor to make the exhaust temperature and current reach preset values.
However, the above-described detection method cannot directly learn the operation condition inside the compressor, and the air conditioner may still be in an overload state even if the discharge temperature and current are within predetermined ranges.
The application provides an overpressure protection method for an air conditioner, which is mainly characterized in that whether the exhaust pressure exceeds the standard is accurately judged by acquiring the exhaust pressure of a compressor, namely, whether a system is in an overload state is judged, and when the system is in overload, the system pressure is reduced by adopting a proper depressurization method aiming at different current operation modes: when the air conditioner operates in a heating mode, the rotating speed of the inner fan is increased, and the rotating speed of the outer fan is reduced; when the air conditioner operates in a refrigeration mode, the rotating speed of the inner fan is reduced, and the rotating speed of the outer fan is increased.
An application scenario of the present application will be described with reference to fig. 1.
Fig. 1 is a schematic view of a scenario of an air conditioner according to an embodiment of the present application. As shown in fig. 1, the air conditioner includes a compressor 101, an indoor heat exchanger 102, and an outdoor heat exchanger 103, an inner fan is provided in the indoor heat exchanger 102, and an outer fan is provided in the outdoor heat exchanger 103.
In this embodiment, in order to obtain the pressure inside the compressor 101, the discharge pressure sensor 104 and the suction pressure sensor 105 may be provided in the discharge port and the suction port of the compressor 101, respectively.
The throttle device is an important component in the air conditioner, and is generally installed between the indoor heat exchanger 102 and the outdoor heat exchanger 103. In this embodiment, the expansion valve 106 is adopted in the throttling device, the expansion valve 106 can throttle the refrigerant in the system, and the action principle of the throttling device is the prior art, which is not described in detail in the present application.
In addition, in order to switch the cooling mode and the heating mode of the air conditioner 10, a four-way reversing valve 107 needs to be additionally arranged at the exhaust port and the air suction port of the compressor 101, the arrangement position and the connection relationship of the four-way reversing valve 107 in the air conditioner are well known to those skilled in the art, and the application is not expanded again.
When the air conditioner 10 is in an operating state, it is known whether the compressor 101 is in an overpressure state, i.e., whether the air conditioner 10 is overloaded, by comparing the detected discharge pressure of the compressor 101 with a first preset pressure. When the system is overloaded, the pressure inside the compressor 101 is reduced by adopting a proper depressurization method according to the current operation mode of the air conditioner 10, so that the overpressure protection of the system is realized.
The mutual coordination of the devices not only reduces the internal pressure of the compressor in time, but also realizes the optimal control of the air conditioner.
The following describes the technical scheme of the present application and how the technical scheme of the present application solves the above technical problems in detail with specific embodiments. The following embodiments may be implemented independently or combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.
Fig. 2 is a flowchart of a method for protecting an overpressure according to an embodiment of the application. As shown in fig. 2, the method is applied to an air conditioner, the air conditioner includes a compressor, an inner fan and an outer fan, and the method includes:
s201, when the air conditioner is in an operation state, the exhaust pressure of the compressor is obtained, and whether the exhaust pressure is larger than or equal to a first preset pressure is judged.
In the above scheme, in the running process of the air conditioner, the internal working condition of the compressor can be reflected by the exhaust pressure, so that the exhaust pressure can be intuitively obtained only by arranging a pressure sensor at the exhaust port of the compressor, and the exhaust pressure is compared with the first preset pressure, so that whether the compressor is in an overpressure state or not can be known.
In a specific implementation, the first preset pressure may be set according to a maximum discharge pressure allowed by the compressor, and exemplary, the first preset pressure may be reduced by 0.05MPa based on the maximum discharge pressure.
S202, if yes, acquiring a current running mode of the air conditioner, and adjusting the rotating speeds of the inner fan and the outer fan according to the current running mode to reduce the exhaust pressure, wherein the current running mode is a heating mode or a refrigerating mode.
In this step, the exhaust pressure is greater than or equal to the first preset pressure, which means that the system is overloaded at this time, and a suitable depressurization mode is required based on the current operation mode of the air conditioner, and in this embodiment, the exhaust pressure is reduced by preferentially adopting a mode of adjusting the rotation speeds of the inner fan and the outer fan, and although the adjustment capability of the exhaust pressure is limited in this mode, the reduction of the refrigerating/heating effect of the air conditioner caused by directly reducing the compressor can be avoided.
In the specific implementation process, the adjusting amplitude of the inner fan and the outer fan can be 100r/min.
And S203, when the current operation mode is a heating mode, the rotating speed of the inner fan is increased, and the rotating speed of the outer fan is reduced.
In the scheme, in the heating mode, the indoor heat exchanger where the inner fan is positioned is used for condensation measurement, so that the rotating speed of the inner fan is increased, and the condensation temperature and the condensation pressure can be reduced; the outdoor heat exchanger where the outer fan is located is an evaporation side, the rotation speed of the outer fan is reduced, and the evaporation pressure can be reduced, so that the exhaust pressure of the compressor can be reduced.
S204, when the current operation mode is a refrigeration mode, the rotating speed of the inner fan is reduced, and the rotating speed of the outer fan is increased.
In the step, in the refrigeration mode, the indoor heat exchanger where the inner fan is positioned is the evaporation side, so that the rotating speed of the inner fan is reduced, and the evaporation pressure can be reduced; the outdoor heat exchanger where the outer fan is located is a condensation side, the rotation speed of the outer fan is increased, the condensation temperature and the condensation pressure can be reduced, and the exhaust pressure of the compressor can be reduced under the double functions.
S205, if not, normal operation is performed.
In the above scheme, the exhaust pressure is smaller than the first preset pressure, which means that the system has no overload at this time, and the normal operation refrigeration mode/heating mode is only needed.
When the air conditioner is in a standby state, whether the refrigerant in the system is sufficient or not can be obtained according to the suction and exhaust pressure condition of the compressor, and an alarm is given in time when the refrigerant is insufficient, and the suction pressure and the exhaust pressure of the compressor are obtained in an exemplary manner; if the suction pressure is equal to the discharge pressure and is smaller than the third preset pressure, outputting first prompt information, wherein the first prompt information is used for prompting the shortage of the refrigerant, and the third preset pressure is larger than the atmospheric pressure.
It is known in the art that the air conditioner is filled with refrigerant, the initial pressure (e.g., the third preset pressure) in the system is greater than the atmospheric pressure, and the system automatically balances the suction pressure and the discharge pressure during the standby period of the air conditioner, and if the suction pressure/discharge pressure at this time is less than the third preset pressure, this means that the amount of refrigerant in the system is reduced and the refrigerant needs to be replenished. Of course, the third preset pressure may also be smaller than the internal pressure formed when the refrigerant is charged into the system, so that there may be a minimum limit to the refrigerant in the system. The third preset pressure may be, for example, 0.5MPa.
The above-mentioned suction pressure and discharge pressure can reflect the working condition of the compressor, and then it can judge whether the refrigerant leakage occurs in the system based on the magnitude relation between the suction pressure and the discharge pressure of the compressor and the atmospheric pressure in the running process. Illustratively, when the air conditioner is in an operational state, the suction pressure of the compressor is obtained; if the suction pressure is equal to the discharge pressure and is equal to the atmospheric pressure, the air conditioner is controlled to enter a stop state so as to prevent the sucked air from damaging the compressor, and a second prompt message is output, wherein the second prompt message is used for prompting complete leakage of the refrigerant.
In the embodiment of the application, whether the system is in an overload state is judged by detecting the exhaust pressure of the compressor, and when the system is in overload, the exhaust pressure of the compressor is reduced by adjusting the rotating speed of the inner fan and the outer fan, so that the air conditioner is prevented from working in overpressure, the service lives of parts are shortened, and the operation faults are caused.
The implementation of the compressor operating frequency to reduce the continuously increasing instantaneous discharge pressure after controlling the rotational speeds of the inner and outer fans in the over-pressure protection method of the present application is described below with reference to fig. 3 and the specific embodiment.
Fig. 3 is a flowchart second of an overpressure protection method according to an embodiment of the present application. As shown in fig. 3, the method includes:
s301, acquiring the instantaneous exhaust pressure of the compressor according to a preset period.
In this step, after the method of reducing the rotational speed of the inner fan and the outer fan in the previous embodiment is adopted, the exhaust pressure of the compressor needs to be continuously detected, so as to avoid that the method of reducing the exhaust pressure fails to effectively reduce the exhaust pressure, and when the exhaust pressure fails to be reduced, other effective methods of reducing the exhaust pressure are adopted in time.
S302, judging whether the instantaneous exhaust pressure is larger than or equal to a second preset pressure, wherein the second preset pressure is larger than the first preset pressure.
In the above scheme, the magnitude relation between the instantaneous exhaust pressure and the second preset pressure may reflect whether the depressurization method of the previous embodiment is effective. The instantaneous discharge pressure is greater than or equal to the second preset pressure, which indicates that the pressure reduction method in the previous embodiment fails to reduce the discharge pressure of the compressor, and a pressure reduction method with higher strength is required for the discharge pressure which does not reduce the reverse rise. Likewise, the second preset pressure may also be set according to the maximum discharge pressure allowed by the compressor, and the second preset pressure may be reduced by 0.02MPa on the basis of the maximum discharge pressure, for example.
And S303, if yes, performing decrementing treatment on the current operating frequency according to the preset decrementing amount to obtain a new operating frequency, and continuously acquiring the instantaneous exhaust pressure according to the preset period.
And S304, if not, continuously maintaining the current operating frequency, and continuously acquiring the instantaneous exhaust pressure according to a preset period.
In this step, the method of reducing the operating frequency of the compressor is used to reduce the discharge pressure, and although this method affects the air conditioning heating/cooling effect, the system pressure adjusting effect is superior to that of the pressure reducing method of the previous embodiment. The instantaneous exhaust pressure is detected according to a preset period, so that the gradual decrease of the current operating frequency can be realized, and the great fluctuation of the refrigerating capacity/heating capacity of the system caused by the sudden decrease of the frequency is avoided.
In a specific implementation, the instantaneous exhaust pressure may be detected every 30 seconds, and once it is detected that it exceeds the second preset pressure, the operating frequency is reduced once, for example by 2Hz, and so on, and the current operating frequency is maintained until it is detected that the instantaneous exhaust pressure no longer exceeds the second preset pressure.
In order to avoid that the low-frequency operation affects the performance of the compressor and even causes operation faults, in a specific implementation process, the decrease of the instantaneous operation frequency can be limited, and for example, if the new operation frequency is lower than the preset minimum operation frequency, the air conditioner is controlled to enter a stop state.
In the embodiment of the application, the instantaneous exhaust pressure of the compressor after the internal and external fans are continuously detected and regulated, the instantaneous exhaust pressure is compared with the second preset pressure, whether the regulation of the internal and external fans effectively reduces the system pressure is accurately obtained, and when the system is still overpressurized, the overpressure problem is solved by adopting a mode of gradually reducing the operation frequency of the compressor.
In summary, according to the overpressure protection method provided by the embodiment of the application, whether the air conditioner is in a high-pressure state is judged through the relation between the exhaust pressure of the compressor and the first preset pressure, and when the system pressure is abnormal, a corresponding pressure regulation mode is adopted for the current operation mode of the air conditioner, namely, the rotation speed of the inner fan is increased and the rotation speed of the outer fan is reduced in a heating mode, and the rotation speed of the inner fan is reduced and the rotation speed of the outer fan is increased in a cooling mode, so that the overpressure operation of the air conditioner is avoided, the operation failure is caused, and the service life of parts is reduced.
Fig. 4 is a schematic structural diagram of an overpressure protection device provided by an embodiment of the present application, and as shown in fig. 4, the overpressure protection device is applied to an air conditioner, and the air conditioner includes a compressor, an inner fan and an outer fan; secondly, the overvoltage protection device may comprise various functional modules for implementing the aforementioned overvoltage protection method, any of which may be implemented in software and/or hardware.
For example, the overpressure protection apparatus may comprise: a first processing module 401 and a second processing module 402;
a first processing module 401, configured to obtain an exhaust pressure of the compressor when the air conditioner is in an operation state, and determine whether the exhaust pressure is greater than or equal to a first preset pressure;
and the second processing module 402 is configured to obtain a current operation mode of the air conditioner if yes, and adjust the rotational speeds of the inner fan and the outer fan according to the current operation mode to reduce the exhaust pressure, where the current operation mode is a heating mode or a cooling mode.
Optionally, the first processing module 401 may also be used to obtain the suction pressure and the discharge pressure of the compressor when the air conditioner is in a standby state; if the suction pressure is equal to the discharge pressure and is smaller than the third preset pressure, outputting first prompt information, wherein the first prompt information is used for prompting the shortage of the refrigerant, and the third preset pressure is larger than the atmospheric pressure.
Optionally, the first processing module 401 may further specifically be configured to: when the air conditioner is in an operating state, acquiring the suction pressure of the compressor; if the suction pressure is equal to the discharge pressure and is equal to the atmospheric pressure, the air conditioner is controlled to enter a stop state so as to prevent the sucked air from damaging the compressor, and a second prompt message is output, wherein the second prompt message is used for prompting complete leakage of the refrigerant.
Optionally, the second processing module 402 may be further configured to obtain an instantaneous discharge pressure of the compressor according to a preset period; and determining whether to reduce the operating frequency of the compressor according to the instantaneous discharge pressure and a second preset pressure, wherein the second preset pressure is larger than the first preset pressure.
Optionally, the second processing module 402 may be further specifically configured to: judging whether the instantaneous exhaust pressure is more than or equal to a second preset pressure; if yes, performing decrementing treatment on the current operating frequency according to the preset decrementing amount to obtain a new operating frequency, and continuously acquiring the instantaneous exhaust pressure according to a preset period; if not, the current operating frequency is kept continuously, and the instantaneous exhaust pressure is obtained continuously according to the preset period.
Optionally, the second processing module 402 may be further configured to control the air conditioner to enter a shutdown state if the new operating frequency is lower than the preset minimum operating frequency.
Optionally, the second processing module 402 may be further specifically configured to: when the current operation mode is a heating mode, the rotating speed of the inner fan is increased, and the rotating speed of the outer fan is reduced; and when the current operation mode is a refrigeration mode, the rotating speed of the inner fan is reduced, and the rotating speed of the outer fan is increased.
The overpressure protection device is used for executing the technical scheme provided by the embodiment of the overpressure protection method, and the implementation principle and technical effects are similar to those of the embodiment of the method, and are not repeated here.
Fig. 5 is a hardware schematic diagram of an air conditioner according to an embodiment of the present application. As shown in fig. 5, the air conditioner 50 provided in this embodiment includes: at least one processor 501, memory 502, compressor 503, indoor heat exchanger and outdoor heat exchanger, wherein, be provided with interior fan 504 in the indoor heat exchanger, be provided with outer fan 505 in the outdoor heat exchanger, processor 501, memory 502, compressor 503, interior fan 504 and outer fan 505 pass through bus 506 and connect.
In a specific implementation, the compressor 503 is configured to compress refrigerant from an outdoor heat exchanger or an indoor heat exchanger;
the indoor heat exchanger is used for condensing the refrigerant from the compressor 503 or evaporating the refrigerant from the outdoor heat exchanger;
the outdoor heat exchanger is used for evaporating the refrigerant from the indoor heat exchanger or condensing the refrigerant from the compressor 503;
the inner fan 504 is used for sucking air into the indoor heat exchanger;
the external fan 505 is used for sucking air into the outdoor heat exchanger;
the compressor 503, the inner fan 504 and the outer fan 505 are respectively connected with the at least one processor 501;
memory 502 stores computer-executable instructions;
the at least one processor 501 executes computer-executable instructions stored in the memory 502, causing the at least one processor 501 to perform the over-pressure protection method as above.
The specific implementation process of the processor 501 may refer to the above-mentioned method embodiment, and its implementation principle and technical effects are similar, and this embodiment will not be described herein again.
In the embodiment shown in fig. 5, it should be understood that the processor may be a central processing unit (english: central Processing Unit, abbreviated as CPU), or may be other general purpose processors, digital signal processors (english: digital Signal Processor, abbreviated as DSP), application specific integrated circuits (english: application Specific Integrated Circuit, abbreviated as ASIC), or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present application may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in a processor for execution.
The Memory may comprise high-speed Memory (Random Access Memory, RAM) or may further comprise Non-volatile Memory (NVM), such as at least one disk Memory.
The bus may be an industry standard architecture (Industry Standard Architecture, ISA) bus, an external device interconnect (Peripheral Component, PCI) bus, or an extended industry standard architecture (Extended Industry Standard Architecture, EISA) bus, among others. The buses may be divided into address buses, data buses, control buses, etc. For ease of illustration, the buses in the drawings of the present application are not limited to only one bus or to one type of bus.
The application also provides a computer readable storage medium, in which computer executable instructions are stored, which when executed by a processor, implement the over-voltage protection method as described above.
The computer readable storage medium described above may be implemented by any type of volatile or non-volatile memory device or combination thereof, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk. A readable storage medium can be any available medium that can be accessed by a general purpose or special purpose computer.
An exemplary readable storage medium is coupled to the processor such the processor can read information from, and write information to, the readable storage medium. In the alternative, the readable storage medium may be integral to the processor. The processor and the readable storage medium may reside in an application specific integrated circuit (Application Specific Integrated Circuits, ASIC for short). The processor and the readable storage medium may reside as discrete components in a device.
The division of the units is merely a logic function division, and there may be another division manner when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application 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 according to the embodiments of the present application. And the aforementioned storage medium includes: a U-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.
Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the method embodiments described above may be performed by hardware associated with program instructions. The foregoing program may be stored in a computer readable storage medium. The program, when executed, performs steps including the method embodiments described above; and the aforementioned storage medium includes: various media that can store program code, such as ROM, RAM, magnetic or optical disks.
While the present application has been described with reference to the preferred embodiments shown in the drawings, it will be readily understood by those skilled in the art that the scope of the application is not limited to those specific embodiments, and the above examples are only for illustrating the technical solution of the application, not for limiting it; although the application 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 or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.
Claims (10)
1. An overpressure protection method, characterized by being applied to an air conditioner, the air conditioner comprising a compressor, an inner fan and an outer fan, the method comprising:
when the air conditioner is in an operating state, acquiring the exhaust pressure of the compressor, and judging whether the exhaust pressure is greater than or equal to a first preset pressure or not;
if yes, a current running mode of the air conditioner is obtained, and the rotating speeds of the inner fan and the outer fan are adjusted according to the current running mode so as to reduce exhaust pressure, wherein the current running mode is a heating mode or a refrigerating mode.
2. The method of claim 1, wherein after said adjusting the rotational speeds of the inner fan and the outer fan according to the current operating mode to reduce the exhaust pressure, the method further comprises:
obtaining the instantaneous exhaust pressure of the compressor according to a preset period;
and determining whether to reduce the operating frequency of the compressor according to the instantaneous discharge pressure and a second preset pressure, wherein the second preset pressure is larger than the first preset pressure.
3. The method of claim 2, wherein determining whether to reduce the operating frequency of the compressor based on the instantaneous discharge pressure and a second preset pressure comprises:
judging whether the instantaneous exhaust pressure is more than or equal to a second preset pressure;
if yes, performing decrementing treatment on the current operating frequency according to the preset decrementing amount to obtain a new operating frequency, and continuously acquiring the instantaneous exhaust pressure according to a preset period;
if not, the current operating frequency is kept continuously, and the instantaneous exhaust pressure is obtained continuously according to the preset period.
4. A method according to claim 3, characterized in that the method further comprises:
and if the new operation frequency is lower than the preset minimum operation frequency, controlling the air conditioner to enter a stop state.
5. The method of claim 1, wherein said adjusting the rotational speed of the inner fan and the outer fan according to the current operating mode comprises:
when the current operation mode is a heating mode, the rotating speed of the inner fan is increased, and the rotating speed of the outer fan is reduced;
and when the current operation mode is a refrigeration mode, reducing the rotating speed of the inner fan and increasing the rotating speed of the outer fan.
6. The method according to claim 1, wherein the method further comprises:
when the air conditioner is in a standby state, acquiring the suction pressure and the discharge pressure of the compressor;
and if the suction pressure is equal to the exhaust pressure and is smaller than a third preset pressure, outputting first prompt information, wherein the first prompt information is used for prompting the shortage of the refrigerant, and the third preset pressure is larger than the atmospheric pressure.
7. The method according to claim 1, wherein the method further comprises:
when the air conditioner is in an operating state, acquiring the suction pressure of the compressor;
and if the suction pressure is equal to the discharge pressure and is equal to the atmospheric pressure, controlling the air conditioner to enter a stop state so as to prevent the sucked air from damaging the compressor, and outputting second prompt information, wherein the second prompt information is used for prompting complete leakage of the refrigerant.
8. An overpressure protection device for an air conditioner comprising a compressor, an inner fan and an outer fan, the device comprising:
the first processing module is used for acquiring the exhaust pressure of the compressor when the air conditioner is in an operating state and judging whether the exhaust pressure is greater than or equal to a first preset pressure or not;
and the second processing module is used for acquiring the current running mode of the air conditioner if the air conditioner is in the first running mode, and adjusting the rotating speeds of the inner fan and the outer fan according to the current running mode so as to reduce the exhaust pressure, wherein the current running mode is a heating mode or a refrigerating mode.
9. An air conditioner is characterized by comprising a compressor, an indoor heat exchanger and an outdoor heat exchanger, wherein an inner fan is arranged in the indoor heat exchanger, an outer fan is arranged in the outdoor heat exchanger, and at least one processor and a memory are also included in the air conditioner;
the compressor is used for compressing the refrigerant from the outdoor heat exchanger or the indoor heat exchanger;
the indoor heat exchanger is used for condensing the refrigerant from the compressor or evaporating the refrigerant from the outdoor heat exchanger;
the outdoor heat exchanger is used for evaporating the refrigerant from the indoor heat exchanger or condensing the refrigerant from the compressor;
the inner fan is used for sucking air into the indoor heat exchanger;
the external fan is used for sucking air into the outdoor heat exchanger;
the compressor, the inner fan and the outer fan are respectively connected with the at least one processor;
the memory stores computer-executable instructions;
the at least one processor executing computer-executable instructions stored in the memory causes the at least one processor to perform the over-pressure protection method of any one of claims 1 to 7.
10. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, carries out the steps of the overpressure protection method as claimed in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311061951.5A CN117212954A (en) | 2023-08-22 | 2023-08-22 | Air conditioner and overpressure protection method, device and medium |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311061951.5A CN117212954A (en) | 2023-08-22 | 2023-08-22 | Air conditioner and overpressure protection method, device and medium |
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| CN117212954A true CN117212954A (en) | 2023-12-12 |
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| CN202311061951.5A Pending CN117212954A (en) | 2023-08-22 | 2023-08-22 | Air conditioner and overpressure protection method, device and medium |
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| Country | Link |
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| CN (1) | CN117212954A (en) |
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- 2023-08-22 CN CN202311061951.5A patent/CN117212954A/en active Pending
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