CN114216255A - Control method and device for air conditioner pressure relief and air conditioner - Google Patents
Control method and device for air conditioner pressure relief and air conditioner Download PDFInfo
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- CN114216255A CN114216255A CN202111462526.8A CN202111462526A CN114216255A CN 114216255 A CN114216255 A CN 114216255A CN 202111462526 A CN202111462526 A CN 202111462526A CN 114216255 A CN114216255 A CN 114216255A
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- pressure
- air conditioner
- pressure value
- relief valve
- pressure relief
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/40—Pressure, e.g. wind pressure
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The application relates to the technical field of air conditioner pressure relief, and discloses a control method for air conditioner pressure relief, and an air conditioner comprises: the compressor is communicated with a pressure release valve between an exhaust pipe and an air return pipe of the compressor; the method comprises the following steps: acquiring a system pressure value of the air conditioner; determining the magnitude relation between the system pressure value and the closing pressure value of the pressure release valve; and controlling the opening degree of the pressure relief valve according to the size relation between the system pressure value and the closing pressure value of the pressure relief valve. In this application, can control the aperture of relief valve according to the big or small relation between the system pressure value that obtains and the closing pressure value, make the pressure release in the blast pipe of high pressure side among the refrigerating system to the muffler of low pressure side to control the system pressure among the refrigerating system better, adjust system pressure high-efficiently, make the more stable operation of compressor, improve the air supply travelling comfort, and then improve user's experience. The application also discloses a controlling means and air conditioner for air conditioner pressure release.
Description
Technical Field
The application relates to the technical field of air conditioner pressure relief, in particular to a control method and device for air conditioner pressure relief and an air conditioner.
Background
The air conditioner is one of necessary household appliances, and has the characteristic of fast refrigeration and heating, so the air conditioner is widely applied, in the process of starting, running and refrigeration or heating, the system pressure is overhigh due to the fact that a user manually adjusts the position of an air outlet of an indoor unit by misoperation or the overhigh external environment, when the system pressure exceeds the maximum load allowed by the system, the air conditioner stops or a compressor is damaged, the service life of the air conditioner is influenced, and therefore the system pressure of the air conditioner needs to be adjusted.
In the related art, a control method for reducing the pressure of a system by reducing the frequency of a compressor and reducing the wind speed of a fan exists, and when the pressure of the system is detected to be too high, the compressor is controlled to quickly reduce the frequency and the rotating speed of the fan, so that the displacement of the compressor is reduced, the pressure in the system is reduced, and the purpose of protecting the compressor is achieved.
In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:
when system pressure was too high, only through reducing compressor frequency and fan rotational speed and be difficult to reduce system pressure high-efficiently, lead to the compressor to shut down, reduce compressor frequency and fan rotational speed fast moreover and can make the air supply travelling comfort sharply descend, user experience is relatively poor.
Disclosure of Invention
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.
The embodiment of the disclosure provides a control method and device for air conditioner pressure relief and an air conditioner, so that the system pressure of the air conditioner is efficiently adjusted, the running stability of a compressor is improved, and the air supply comfort is improved.
In some embodiments, a control method for air conditioner pressure relief, the air conditioner comprising: the compressor is communicated with a pressure release valve between an exhaust pipe and an air return pipe of the compressor; the method comprises the following steps:
acquiring a system pressure value of the air conditioner;
determining the magnitude relation between the system pressure value and the closing pressure value of the pressure release valve;
and controlling the opening degree of the pressure relief valve according to the size relation between the system pressure value and the closing pressure value of the pressure relief valve.
In some embodiments, a control device for air conditioner pressure relief, comprising: the air conditioner pressure relief control system comprises a processor and a memory, wherein the memory stores program instructions, and the processor is configured to execute the control method for air conditioner pressure relief when the program instructions are executed.
In some embodiments, the air conditioner comprises the control device for the pressure relief of the air conditioner of the embodiment
The control method and device for air conditioner pressure relief and the air conditioner provided by the embodiment of the disclosure can achieve the following technical effects:
the intercommunication has the relief valve between the blast pipe of compressor and muffler, can carry out the pressure release to refrigerating system through the relief valve, through the system pressure value that obtains the air conditioner operation in-process, according to the big or small relation between the system pressure value that obtains and the closed pressure value control the aperture of relief valve, make the pressure relief among the refrigerating system in the blast pipe of high pressure side to the muffler of low pressure side, thereby control the system pressure among the refrigerating system better, adjust system pressure high-efficiently, make the more stable operation of compressor, improve the air supply travelling comfort, and then improve user's experience.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:
FIG. 1 is a schematic diagram of a control method for air conditioner pressure relief according to an embodiment of the disclosure;
FIG. 2 is a schematic diagram of a refrigeration system provided by embodiments of the present disclosure;
FIG. 3 is a schematic view of another refrigeration system provided by an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of another control method for air conditioner pressure relief provided by the embodiment of the disclosure;
FIG. 5 is a schematic diagram of another control method for air conditioner pressure relief provided by the embodiment of the disclosure;
fig. 6 is a schematic diagram of a control device for air conditioner pressure relief according to an embodiment of the present disclosure.
Reference numerals:
100. a processor (processor); 101. a memory (memory); 102. a Communication Interface (Communication Interface); 103. a bus; 200. a compressor; 300. a condenser; 400. a throttling device; 500. an evaporator; 600. and (4) releasing the valve.
Detailed Description
So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.
The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
The term "plurality" means two or more unless otherwise specified.
The term "correspond" may refer to an association or binding relationship, and a corresponds to B refers to an association or binding relationship between a and B.
In the embodiment of the disclosure, the intelligent household appliance is a household appliance formed by introducing a microprocessor, a sensor technology and a network communication technology into the household appliance, and has the characteristics of intelligent control, intelligent sensing and intelligent application, the operation process of the intelligent household appliance usually depends on the application and processing of modern technologies such as internet of things, internet and an electronic chip, for example, the intelligent household appliance can realize the remote control and management of a user on the intelligent household appliance by connecting the intelligent household appliance with the electronic device.
In the disclosed embodiment, the terminal device is an electronic device with a wireless connection function, and the terminal device can be in communication connection with the above intelligent household appliance by connecting to the internet, or can be in communication connection with the above intelligent household appliance directly in a bluetooth mode, a wifi mode, or the like. In some embodiments, the terminal device is, for example, a mobile device, a computer, or a vehicle-mounted device built in a floating car, or any combination thereof. The mobile device may include, for example, a cell phone, a smart home device, a wearable device, a smart mobile device, a virtual reality device, or the like, or any combination thereof, wherein the wearable device includes, for example: smart watches, smart bracelets, pedometers, and the like.
Referring to fig. 1, in some embodiments, a method for controlling pressure relief of an air conditioner includes: a compressor 200, a relief valve 600 is communicated between an exhaust pipe and a return pipe of the compressor 200;
the method comprises the following steps:
s01, the processor acquires a system pressure value of the air conditioner;
s02, determining the size relation between the system pressure value and the closing pressure value of the pressure relief valve by the processor;
and S03, the processor controls the opening degree of the pressure relief valve according to the magnitude relation between the system pressure value and the closing pressure value of the pressure relief valve.
The control method for air conditioner pressure relief provided by the embodiment of the disclosure is adopted, the pressure relief valve is communicated between the exhaust pipe and the air return pipe of the compressor, the pressure relief of the refrigeration system can be realized through the pressure relief valve, the system pressure value in the air conditioner operation process is obtained, the opening degree of the pressure relief valve is controlled according to the size relation between the obtained system pressure value and the closing pressure value, the pressure in the exhaust pipe of the high-pressure side in the refrigeration system is relieved to the air return pipe of the low-pressure side, the system pressure in the refrigeration system is controlled better, the system pressure is adjusted efficiently, the compressor is enabled to operate more stably, the air supply comfort is improved, and the user experience is further improved.
The pressure value of the pressure relief valve refers to the pressure value of the pressure relief valve at the moment when the system pressure meets the condition of no need of pressure relief, that is, the pressure value of the pressure relief valve is the critical point of whether the pressure relief valve needs to be opened or not, the pressure value can be preset for the air conditioner leaving the factory, and can also be set according to the actual working condition of the air conditioner, and the detailed description is omitted here.
Referring to fig. 2 and 3, in some embodiments, the air conditioner includes a refrigeration system, the refrigeration system includes a compressor 200, a condenser 300, a throttling device 400 and an evaporator 500, an exhaust pipe of the compressor 200 is communicated with an input end of the condenser 300, an output end of the condenser 300 is communicated with an input end of the evaporator 500 through a pipeline, the throttling device 400 is communicated with a communication pipeline between the condenser 300 and the evaporator 500, an output end of the evaporator 500 is communicated with an air return pipe of the compressor 200, and a pressure relief valve 600 is communicated between the exhaust pipe and the air return pipe. Thus, the purpose of cooling or heating is achieved by the circulation of the refrigerant in the refrigeration system, since the refrigerant is compressed by the compressor 200 and then discharges the gas in a high-temperature and high-pressure state through the exhaust pipe, the gas in the high-temperature and high-pressure state flows through the condenser 300 for condensation, then is throttled by the throttling device 400 for pressure reduction, and finally is evaporated into the gas in a low-temperature and low-pressure state by the evaporator 500 and flows into the compressor 200 again through the return pipe, a pressure difference is formed between the exhaust pipe and the return pipe of the compressor 200, the high pressure in the exhaust pipe can be decompressed into the return pipe in a low pressure by the decompression valve 600, thereby reducing the pressure of the refrigeration system and maintaining the stable operation of the compressor 200.
Optionally, a pressure detection module is further arranged on the refrigeration system, the pressure detection module is arranged on the high-pressure side of the refrigeration system and used for detecting a system pressure value, communication connection is established between the pressure detection module and the processor, and the processor can acquire the system pressure value sent by the pressure detection module. Therefore, the processor can acquire the system pressure value sent by the pressure detection module by detecting the system pressure value through the pressure detection module, so that the acquisition precision of the system pressure value is improved, and the acquisition process is simplified.
In some optional embodiments, as shown in fig. 4, a method for controlling pressure relief of an air conditioner includes:
s011, acquiring a system high-pressure side pressure value of the air conditioner by the processor;
s021, determining a size relation between a pressure value of a high-pressure side of the system and a closing pressure value of a pressure release valve by the processor;
and S031, the processor controls the opening of the pressure relief valve according to the size relation between the pressure value of the high pressure side of the system and the closing pressure value of the pressure relief valve.
By adopting the control method for air conditioner pressure relief provided by the embodiment of the disclosure, due to the action of the throttling device in the refrigeration system of the air conditioner, a high pressure side and a low pressure side exist in the refrigeration system, the compressor is shut down or even damaged due to overhigh pressure of the high pressure side, pressure relief needs to be carried out on the high pressure side, the processor acquires the pressure value of the system high pressure side of the air conditioner, the opening degree of the pressure relief valve is controlled according to the size relation between the acquired pressure value of the high pressure side and the closing pressure value, the system pressure of the air conditioner can be better adjusted, and the running stability of the compressor is improved.
In some embodiments, the processor obtains a system high side pressure value P of the air conditionerconAnd the preset closing pressure value of the pressure relief valve is recorded as PsThe processor determines the magnitude relation between the pressure value of the high pressure side of the system and the closing pressure value of the pressure relief valve, namely the processor determines PconAnd PsAccording to PconAnd PsThe opening degree of the pressure relief valve is controlled by the size relation between the two parts.
Referring to fig. 5, in some optional embodiments, a method for controlling pressure relief of an air conditioner includes:
s011, acquiring a system high-pressure side pressure value of the air conditioner by the processor;
s021, determining a size relation between a pressure value of a high-pressure side of the system and a closing pressure value of a pressure release valve by the processor;
s032, controlling the pressure relief valve to close by the processor under the condition that the pressure value of the high-pressure side of the system is less than or equal to the closing pressure value;
and S033, under the condition that the pressure value of the high-pressure side of the system is larger than the closing pressure value, controlling the pressure relief valve to open by the processor.
By adopting the control method for air conditioner pressure relief provided by the embodiment of the disclosure, the processor determines the magnitude relation between the system high pressure side pressure value and the closing pressure value of the pressure relief valve to control the opening degree of the pressure relief valve by obtaining the high pressure side pressure value of the air conditioner, when the system high pressure side pressure value is less than or equal to the closing pressure value, the system high pressure side pressure value of the air conditioner is relatively small at the moment, the influence on the operation of the compressor is small, therefore, the processor controls the pressure relief valve to be closed without pressure relief on the refrigeration system of the air conditioner, when the system high pressure side pressure value is greater than the closing pressure value, the system high pressure side pressure value of the air conditioner is relatively large at the moment, the operation of the compressor is influenced by pressure, the compressor faces the risk of shutdown or damage at any time, therefore, the processor controls the pressure relief valve to be opened, so that the pressure of the high pressure side in the refrigeration system is relieved to the low pressure side, the pressure of the refrigerating system is quickly reduced, so that the compressor can stably operate, and the refrigerating and heating stability is improved.
Optionally, the system high pressure side pressure value being less than or equal to the shut-off pressure value means: pressure value P of high pressure side of systemconLess than or equal to the closing pressure value Ps。
Optionally, the system high-pressure side pressure value being greater than the shut-off pressure value is: pressure value P of high pressure side of systemconGreater than the closing pressure value Ps。
Optionally, the processor controls the pressure relief valve to open in a case where the system high side pressure value is greater than the closing pressure value, including: and under the condition that the air conditioner is a fixed-frequency air conditioner, the processor controls the decompression valve to be opened to perform decompression until the opening degree is maximum. Therefore, when the pressure value of the high-pressure side of the system is larger than the closing pressure value, the pressure in the system is too high, the system pressure needs to be reduced, and the stable operation of the air conditioner needs to be maintained.
Optionally, when the air conditioner is a fixed-frequency air conditioner, the processor controls the pressure relief valve to open to relieve pressure until the opening degree reaches the maximum, and the method includes: and acquiring a system high-pressure side pressure value of the air conditioner, starting timing when the system high-pressure side pressure value is less than or equal to a closing pressure value, and controlling the closing of the pressure relief valve after the system high-pressure side pressure value is less than or equal to the closing pressure value for t3 duration. Thus, for a fixed frequency air conditioner, the frequency of a compressor cannot be changed, and when the obtained system high-pressure side pressure value is greater than a closing pressure value, the system pressure cannot be reduced by reducing the frequency of the compressor, so that the processor needs to control the pressure relief valve to open for pressure relief, the system pressure is rapidly reduced, the pressure relief capacity of the pressure relief valve reaches the strongest value after the opening degree of the pressure relief valve reaches the maximum value, so that the processor obtains the system high-pressure side pressure value of the air conditioner again, starts to time when the system high-pressure side pressure value is less than or equal to the closing pressure value, and controls the pressure relief valve to close after the duration of t3, and after the system high-pressure side pressure value is less than or equal to the closing pressure value for t3, the pressure reduction effect of the system pressure is better, if the pressure relief valve is kept open, the system pressure is insufficient, and the refrigeration or heating effect is affected, so that the pressure relief valve is controlled to close, the air conditioner can run stably and the refrigerating and heating effects of the air conditioner are guaranteed.
In one particular embodiment, the duration of t3 may be 20 seconds. After the decompression valve is opened to the maximum opening degree to release the pressure of the refrigeration system, if the pressure value of the high-pressure side of the system is less than or equal to the closing pressure value for 20 seconds, the pressure reduction effect of the system pressure is better, and the processor needs to control the decompression valve to be closed for ensuring the refrigeration and heating effects of the air conditioner.
Optionally, the processor controls the pressure relief valve to open in a case where the system high side pressure value is greater than the closing pressure value, including: when the air conditioner is a variable frequency air conditioner, the processor obtains the time length that the pressure value of the high-pressure side of the system is larger than the closing pressure value, and when the time length is larger than t1, the processor controls the pressure relief valve to be opened. Therefore, when the pressure value of the high-pressure side of the system is greater than the closing pressure value, the pressure in the system is too high, and the system pressure needs to be reduced to maintain the stable operation of the air conditioner, but when the air conditioner is an inverter air conditioner, the compressor has self-adjusting capacity, so the processor acquires the time length that the pressure value of the high-pressure side of the system is greater than the closing pressure value, and when the time length is greater than t1, the processor controls the relief valve to be opened, because after the processor acquires that the pressure value of the high-pressure side of the system is greater than the closing pressure value for a time length of t1, namely, the self-adjustment of the compressor cannot effectively reduce the system pressure at the moment, the processor controls the relief valve to be opened to release the pressure of the high-pressure side of the system to the low-pressure side through the relief valve, the system pressure is effectively reduced, the stability of the operation of the compressor is improved, and the compressor is protected.
Optionally, in the case that the duration is greater than t1, the processor controls the pressure relief valve to open, including: after the pressure relief valve is opened for a time period t2, the processor controls the compressor to frequency down. Therefore, after the processor obtains that the pressure value of the high-pressure side of the system is greater than the closing pressure value for a time duration of t1, namely, the self-regulation of the compressor can not effectively reduce the pressure of the system at the time, the processor controls the pressure release valve to open the pressure release valve to release the pressure of the high-pressure side of the system to the low-pressure side through the pressure release valve, after the pressure release valve is opened for a time duration of t2, the processor controls the compressor to reduce the frequency of the compressor to perform auxiliary pressure reduction on the pressure release valve, two control means of opening the pressure release valve and reducing the frequency of the compressor are adopted, the pressure reduction efficiency of the system pressure of the air conditioner is further improved, the load of the compressor is reduced by reducing the frequency of the compressor, the running stability of the compressor is further improved, and the compressor is protected.
Optionally, after the pressure relief valve is opened for a time period t2, the processor controls the compressor to down-convert, including: after the pressure relief valve is opened for a time period t2, the processor controls the pressure relief valve to relieve pressure at the current opening degree, and simultaneously controls the compressor to reduce the frequency. Like this, after it is long time that t2 is opened to treater control relief valve, system pressure has descended this moment, for keeping the refrigeration effect of the pressure in the system and air conditioner, treater control relief valve carries out the pressure release with current aperture, need not to increase the aperture of relief valve again, and the compressor frequency reduction is controlled simultaneously, reduces the displacement and reduces exhaust temperature to reduce system pressure better, when guaranteeing the refrigeration effect of heating of air conditioner, reduce the system pressure of air conditioner high-efficiently.
Optionally, after the pressure relief valve is opened for a time period t2, the processor controls the compressor to down-convert, including: and the processor controls the compressor to reduce the frequency by presetting amplitude and obtains the pressure value of the high-pressure side of the system, and controls the pressure release valve to close and the compressor stops reducing the frequency under the condition that the pressure value of the high-pressure side of the system is less than or equal to the closing pressure value. Like this, after processor control relief valve opened t2 duration, the processor control compressor falls the frequency with predetermineeing the amplitude reduction, can improve the compressor and be carrying out the stability of frequency reduction regulation, the treater acquires the system high pressure side pressure value once more simultaneously, under the condition that system high pressure side pressure value is less than or equal to the shut-off pressure value, the pressure reduction effect of system pressure is better this moment, the processor control relief valve is closed, the compressor stops falling the frequency, thereby reduce the influence that system step-down caused to air conditioner refrigeration heating, when guaranteeing the refrigeration heating effect of air conditioner, adjust the system pressure of air conditioner better.
Optionally, the processor controls the compressor to preset step-down frequency, including: the processor controls the compressor to reduce the frequency by a preset reduction of 1Hz every 5 seconds. Therefore, the compressor is subjected to frequency reduction with lower amplitude reduction, the stability of the compressor during frequency reduction is improved, the rapid reduction of the cooling and heating effects of the air conditioner caused by the large-amplitude frequency reduction of the compressor is avoided, and the air supply comfort of the air conditioner is improved.
In some specific embodiments, time duration t1 may be 5 seconds, time duration t2 may be 10 seconds; when the air conditioner is a variable frequency air conditioner, the processor controls the pressure relief valve to be opened when the processor determines that the obtained pressure value of the high-pressure side of the system is larger than the closing pressure value and the duration is longer than 5 seconds; and after the processor controls the pressure release valve to open for 10 seconds, the pressure release valve is controlled to release pressure at the current opening, and the compressor is controlled to reduce the frequency. Thus, when the air conditioner is a variable frequency air conditioner, when the system high-pressure side pressure value of the air conditioner is greater than the closing pressure value, the compressor can perform self-regulation, after the duration that the system high-pressure side pressure value of the air conditioner is greater than the closing pressure value lasts for 5 seconds, the self-regulation of the compressor cannot meet the requirement of system pressure reduction, therefore, the pressure of the high-pressure side in the refrigeration system is released to the low-pressure side by controlling the pressure release valve to open, and after the pressure release valve is opened for 10 seconds, the system pressure is reduced, therefore, the compressor is controlled to perform frequency reduction auxiliary pressure reduction, the pressure release valve is controlled to release pressure at the current opening degree, the compressor is controlled to perform frequency reduction at the same time, the situation that the pressure in the system is lower due to the overlarge opening degree of the pressure release valve, the refrigeration and heating effects of the air conditioner are influenced is avoided, the thermal influence on the air conditioner is better regulated while the pressure reduction and the pressure reduction is performed on the air conditioner, and the operation of the compressor is protected, the stability of the operation of the compressor is improved.
In some specific embodiments, the processor controls the pressure relief valve to open, including: the processor controls the pressure relief valve to open, and adjusts the opening degree of the pressure relief valve according to the following formula:
b＝[(Pcon-Ps)/(Po-Ps)]*B
wherein B is the opening degree of the pressure relief valve, B is the maximum opening degree of the pressure relief valve, PconIs the pressure value of the high pressure side of the system, PsIs the closing pressure value of the pressure relief valve, PoIs the full open pressure value of the pressure relief valve, and Po>Ps. In this way, the processor controls the relief valve to open, and determines the opening degree of the relief valve according to the product of the ratio of the difference between the obtained system high-pressure side pressure value and the closing pressure value of the relief valve to the difference between the full-opening pressure value of the relief valve and the closing pressure value of the relief valve and the maximum opening degree of the relief valve, so that the opening degree of the relief valve is enabled to be equal to the system high-pressure side pressure value, the closing pressure value of the relief valve, the full-opening pressure value of the relief valve and the maximum opening value of the relief valveThe degrees are correlated, the opening degree of the pressure release valve is adjusted more accurately, the pressure release valve can release the system pressure better, the influence of the pressure release on the refrigeration and heating of the air conditioner can be reduced, the stability of the operation of the compressor is further improved, and the air supply comfort of the air conditioner is improved.
Understandably, the full opening pressure value P of the pressure relief valveoThe pressure value P may be preset for the air conditioner leaving the factory, or obtained when the system high-pressure side pressure reaches the maximum critical value according to the actual working condition of the air conditioner and the operation of the air conditioner, which is not described hereinconWhen it is, P isconSubstituting the opening b of the pressure relief valve into the formula to obtain the opening b of the pressure relief valve.
Referring to fig. 6, an embodiment of the present disclosure provides a control device for air conditioner pressure relief, including a processor (processor)100 and a memory (memory) 101. Optionally, the apparatus may also include a Communication Interface (Communication Interface)102 and a bus 103. The processor 100, the communication interface 102, and the memory 101 may communicate with each other via a bus 103. The communication interface 102 may be used for information transfer. The processor 100 may call logic instructions in the memory 101 to execute the control method for air conditioner pressure relief according to the above embodiment.
In addition, the logic instructions in the memory 101 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products.
The memory 101, which is a computer-readable storage medium, may be used for storing software programs, computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 100 executes functional applications and data processing by executing program instructions/modules stored in the memory 101, that is, implements the control method for air conditioner pressure relief in the above embodiment.
The memory 101 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. In addition, the memory 101 may include a high-speed random access memory, and may also include a nonvolatile memory.
In some embodiments, an air conditioner comprises the control device for air conditioner pressure relief.
The embodiment of the disclosure provides a storage medium, which stores computer-executable instructions configured to execute the control method for air conditioner pressure relief.
The storage medium described above may be a transitory computer-readable storage medium or a non-transitory computer-readable storage medium.
The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, where the computer software product is stored in a storage medium and includes one or more instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium comprising: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes, and may also be a transient storage medium.
The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. Furthermore, the words used in the specification are words of description only and are not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, the terms "comprises" and/or "comprising," when used in this application, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising an …" does not exclude the presence of other like elements in a process, method or apparatus that comprises the element. In this document, each embodiment may be described with emphasis on differences from other embodiments, and the same and similar parts between the respective embodiments may be referred to each other. For methods, products, etc. of the embodiment disclosures, reference may be made to the description of the method section for relevance if it corresponds to the method section of the embodiment disclosure.
Those of skill in the art would appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software may depend upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments. It can be clearly understood by the skilled person that, for convenience and brevity of description, the specific working processes of the system, the apparatus and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, apparatuses, etc.) may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units may be merely a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. The units described as separate parts may or may not be physically separate, and parts displayed 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 can be selected according to actual needs to implement the present embodiment. In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than disclosed in the description, and sometimes there is no specific order between the different operations or steps. For example, two sequential operations or steps may in fact be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. Each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Claims (10)
1. A control method for air conditioner pressure relief is characterized in that the air conditioner comprises the following steps: a compressor (200), wherein a pressure relief valve (600) is communicated between an exhaust pipe and a return pipe of the compressor (200);
the method comprises the following steps:
acquiring a system pressure value of the air conditioner;
determining a magnitude relation between the system pressure value and a closing pressure value of the pressure relief valve;
and controlling the opening degree of the pressure relief valve according to the magnitude relation between the system pressure value and the closing pressure value of the pressure relief valve.
2. The method of claim 1, wherein obtaining a system pressure value for the air conditioner comprises:
and acquiring a system high-pressure side pressure value of the air conditioner.
3. The method of claim 2, wherein controlling the opening of the pressure relief valve according to a magnitude relationship between the system pressure value and a closing pressure value of the pressure relief valve comprises:
controlling the pressure relief valve to close under the condition that the pressure value of the high-pressure side of the system is less than or equal to the closing pressure value;
and controlling the pressure relief valve to open under the condition that the pressure value of the high-pressure side of the system is greater than the closing pressure value.
4. The method of claim 3, wherein controlling the pressure relief valve to open in the event that the system high side pressure value is greater than the closing pressure value comprises:
and under the condition that the air conditioner is a fixed-frequency air conditioner, controlling the pressure relief valve to open for pressure relief until the opening degree is maximum.
5. The method of claim 3, wherein controlling the pressure relief valve to open in the event that the system high side pressure value is greater than the closing pressure value comprises:
and under the condition that the air conditioner is a variable frequency air conditioner, acquiring the time length that the pressure value of the high-pressure side of the system is greater than the closing pressure value, and under the condition that the time length is greater than t1, controlling the pressure release valve to be opened.
6. The method of claim 5, wherein controlling the pressure relief valve to open if the time period is greater than t1 comprises:
and controlling the compressor to reduce the frequency after the pressure relief valve is opened for a time period of t 2.
7. The method of claim 6, wherein controlling the compressor to ramp down after the pressure relief valve opens for a period of t2, comprises:
and controlling the compressor to reduce the frequency by preset amplitude and obtain the pressure value of the high-pressure side of the system, controlling the pressure release valve to close under the condition that the pressure value of the high-pressure side of the system is less than or equal to the closing pressure value, and stopping reducing the frequency by the compressor.
8. The method of any of claims 3 to 7, wherein controlling the pressure relief valve to open comprises:
controlling the pressure relief valve to open, and adjusting the opening degree of the pressure relief valve according to the following formula:
b＝[(Pcon-Ps)/(Po-Ps)]*B
wherein B is the opening degree of the pressure relief valve, B is the maximum opening degree of the pressure relief valve, PconIs the pressure value, P, on the high pressure side of the systemsIs the closing pressure value, P, of the pressure relief valveoIs the full opening pressure value of the pressure release valve, and Po>The P iss。
9. A control device for air conditioner pressure relief, comprising a processor and a memory storing program instructions, characterized in that the processor is configured to execute the control method for air conditioner pressure relief according to any one of claims 1 to 8 when executing the program instructions.
10. An air conditioner characterized by comprising the control device for air conditioner pressure relief according to claim 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111462526.8A CN114216255B (en) | 2021-12-02 | 2021-12-02 | Control method and device for air conditioner pressure relief and air conditioner |
| PCT/CN2022/102714 WO2023098067A1 (en) | 2021-12-02 | 2022-06-30 | Control method and device for pressure relief of air conditioner, and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111462526.8A CN114216255B (en) | 2021-12-02 | 2021-12-02 | Control method and device for air conditioner pressure relief and air conditioner |
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| CN114216255A true CN114216255A (en) | 2022-03-22 |
| CN114216255B CN114216255B (en) | 2023-10-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023098067A1 (en) * | 2021-12-02 | 2023-06-08 | 青岛海尔空调器有限总公司 | Control method and device for pressure relief of air conditioner, and air conditioner |
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| WO2023098067A1 (en) | 2023-06-08 |
| CN114216255B (en) | 2023-10-20 |
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