CN115076869A - Oil blockage preventing method and device for air conditioner, air conditioner and storage medium - Google Patents
Oil blockage preventing method and device for air conditioner, air conditioner and storage medium Download PDFInfo
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- CN115076869A CN115076869A CN202210573692.3A CN202210573692A CN115076869A CN 115076869 A CN115076869 A CN 115076869A CN 202210573692 A CN202210573692 A CN 202210573692A CN 115076869 A CN115076869 A CN 115076869A
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- air conditioner
- oil
- pressure
- pipeline
- oil blockage
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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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
Abstract
The application relates to the technical field of intelligent household appliances, and discloses a method for preventing oil blockage of an air conditioner, which comprises the steps of judging whether a preset condition is met or not according to the pressure of an exhaust port of a compressor under the condition that the air conditioner is in a running state; and controlling the oil blockage preventing pipeline to be opened under the condition of meeting the preset condition. Whether the pressure real-time supervision air conditioner through the compressor gas vent takes place oil stifled, make opening grease proofing stifled pipeline that the air conditioner can be timely, because compressor gas vent and throttling arrangement front end are connected to grease proofing stifled pipeline, consequently the high temperature combustible refrigerant of compressor gas vent department can flow to throttle dress to the front end along grease proofing stifled pipeline, mixes with the low temperature combustible refrigerant that normally flows through, effectively improves the combustible refrigerant's of throttling arrangement front end temperature, reduce lubricating oil viscosity, thereby prevent that oil from stifled. The application also discloses a device for preventing the oil blockage of the air conditioner, the air conditioner and a storage medium.
Description
Technical Field
The application relates to the technical field of intelligent household appliances, for example, to a method and a device for preventing oil blockage of an air conditioner, the air conditioner and a storage medium.
Background
At present, in the technical field of air-conditioning refrigeration, R410a refrigerant is mostly used to replace R22 refrigerant, and the advantages of the refrigerant are obviously reflected in the inverter air-conditioner, but because the GWP (Global Warming Potential) of R410a refrigerant is higher, the Global Warming Potential (GWP) is getting worse, and the refrigerant will be eliminated gradually under the background that Global Warming is getting worse and Global climate change is emphasized more seriously in all countries of the world. Therefore, at present, research is being focused on low GWP refrigerants represented by R32 refrigerants and R290 refrigerants, and particularly, refrigerants having little pollution such as R290 refrigerant are being developed, and at the same time, research and development of corresponding compressors are also in progress, and in particular, research and development of lubricating oil for new compressors are receiving increasing attention. However, as for the flammable refrigerant R290, the viscosity thereof is increased sharply at low temperature, and particularly in the cooling and heating inverter, when the four-way valve is reversed after defrosting is finished, the ultralow temperature refrigerant and the lubricating oil in the indoor heat exchanger need to enter the outdoor heat exchanger through the throttling device, and the flammable refrigerant is low in filling amount due to safety considerations, so that the pressure of the air conditioning system is much lower than that of the air conditioning system of the R410a refrigerant and the R32 refrigerant, oil with relatively high viscosity is blocked by the throttling device, the flammable refrigerant cannot participate in circulation, the compressor idles, the capacity and the operating power are reduced, the system is lack of oil and fluorine, the motor of the compressor generates heat excessively after long-time operation, and the service lives of the compressor and the system are greatly shortened.
The related art discloses a method for treating oil blockage of an air conditioning system, which comprises the following steps: when detecting that the air conditioning system in a preset working state is blocked by oil, starting the heating device arranged at the throttling device; counting a first operation time of the heating device in a working state; and when the first running time reaches a first preset time, detecting whether the air-conditioning system is blocked by oil or not so as to perform corresponding processing according to a detection result. The problem of oil blockage is timely and effectively solved, so that the air conditioning system is recovered to normal operation, the phenomenon that the capacity of the air conditioning system is attenuated due to oil blockage is further avoided, and the service lives of the compressor and the air conditioning system are guaranteed.
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:
although the air conditioner using the combustible refrigerant is prevented from oil blockage to a certain extent by adopting the related technology, in order to prevent the oil blockage, the throttling device is heated by the additionally arranged heating device, and the situation of untimely heating and overlarge energy consumption can occur due to the fact that the heating needs a certain time, so that the normal operation of the system is influenced.
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 method and a device for preventing oil blockage of an air conditioner, the air conditioner and a storage medium, so that under the condition that the oil blockage occurs to the air conditioner using a combustible refrigerant, the low-temperature combustible refrigerant at a throttling device can be heated in time to prevent the oil blockage, and the stable operation of a system is ensured.
In some embodiments, the air conditioner includes an oil blockage prevention pipe connecting the compressor discharge port and the front end of the throttle device; the method comprises the following steps: under the condition that the air conditioner is in an operating state, judging whether a preset condition is met or not according to the pressure of an exhaust port of the compressor; and controlling the oil blockage preventing pipeline to be opened under the condition of meeting the preset condition.
In some embodiments, the apparatus comprises: the processor is configured to execute the method for preventing the oil blockage of the air conditioner when executing the program instructions.
In some embodiments, the air conditioner includes: an oil blockage preventing pipeline connecting the air outlet of the compressor and the front end of the throttling device; and the oil blockage preventing device for the air conditioner
In some embodiments, the storage medium stores program instructions that, when executed, perform the above-described method for preventing oil blockage in an air conditioner.
The method and the device for preventing the oil blockage of the air conditioner, the air conditioner and the storage medium provided by the embodiment of the disclosure can realize the following technical effects:
under the condition that the air conditioner is in the running state, whether the preset condition is met or not is judged according to the pressure of the air outlet of the compressor, and the oil blockage preventing pipeline is controlled to be opened under the condition that the preset condition is met. Whether the pressure real-time supervision air conditioner through the compressor gas vent takes place oil stifled, make opening grease proofing stifled pipeline that the air conditioner can be timely, because compressor gas vent and throttling arrangement front end are connected to grease proofing stifled pipeline, consequently the high temperature combustible refrigerant of compressor gas vent department can flow to throttle dress to the front end along grease proofing stifled pipeline, mixes with the low temperature combustible refrigerant that normally flows through, effectively improves the combustible refrigerant's of throttling arrangement front end temperature, reduce lubricating oil viscosity, thereby prevent that oil from stifled. Under the condition that an air conditioner using combustible refrigerant is blocked by oil, the throttling device can be heated in time, and the stable operation of the system is ensured.
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 method for preventing oil blockage of an air conditioner according to an embodiment of the disclosure;
FIG. 2 is a schematic view of another method for preventing oil blockage of an air conditioner according to an embodiment of the present disclosure;
FIG. 3 is a schematic view of another method for preventing oil blockage of an air conditioner according to an embodiment of the present disclosure;
FIG. 4 is a schematic view of another method for preventing oil blockage of an air conditioner according to an embodiment of the present disclosure;
FIG. 5 is a schematic view of another method for preventing oil blockage of an air conditioner according to an embodiment of the present disclosure;
fig. 6 is a schematic view of an oil blockage preventing device for an air conditioner according to an embodiment of the disclosure.
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 claims of the embodiments of the disclosure and in the drawings described above 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.
In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.
The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. E.g., a and/or B, represents: a or B, or A and B.
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.
The embodiment of the disclosure discloses an air conditioner, which comprises an oil blockage preventing pipeline connected with an exhaust port of a compressor and the front end of a throttling device. Under the condition that the air conditioner is in normal operation, the combustible refrigerant is discharged from the compressor, sequentially flows through the condenser, the throttling device and the evaporator, and finally returns to the compressor. Under the condition that the oil blockage preventing pipeline is opened, part of high-temperature combustible refrigerant at the exhaust port of the compressor directly flows to the front end of the throttling device to be mixed with low-temperature combustible refrigerant flowing normally.
Referring to fig. 1, an embodiment of the present disclosure provides a method for preventing oil blockage of an air conditioner, including:
and S01, under the condition that the air conditioner is in the running state, the air conditioner judges whether the preset condition is met according to the pressure of the air outlet of the compressor.
And S02, controlling the oil blockage preventing pipeline to be opened under the condition that the air conditioner meets the preset condition.
Wherein, satisfying the predetermined condition indicates that the air conditioner has the oil blocking problem.
By adopting the method for preventing the oil blockage of the air conditioner, whether the preset condition is met or not can be judged according to the pressure of the exhaust port of the compressor under the condition that the air conditioner is in the running state, and the opening of the oil blockage preventing pipeline is controlled under the condition that the preset condition is met. Whether the pressure real-time supervision air conditioner through the compressor gas vent takes place oil stifled, make opening grease proofing stifled pipeline that the air conditioner can be timely, because compressor gas vent and throttling arrangement front end are connected to grease proofing stifled pipeline, consequently the high temperature combustible refrigerant of compressor gas vent department can flow to throttle dress to the front end along grease proofing stifled pipeline, mixes with the low temperature combustible refrigerant that normally flows through, effectively improves the combustible refrigerant's of throttling arrangement front end temperature, reduce lubricating oil viscosity, thereby prevent that oil from stifled. Under the condition that an air conditioner using the combustible refrigerant is blocked by oil, the low-temperature combustible refrigerant at the throttling device can be heated in time, and the stable operation of the system is ensured.
Referring to fig. 2, an embodiment of the present disclosure provides a method for preventing oil blockage of an air conditioner, including:
and S21, acquiring the pressure of the air outlet of the compressor by the air conditioner under the condition that the air conditioner is in the running state.
And S22, the air conditioner determines that the preset condition is met under the condition that the pressure of the air outlet of the compressor is greater than the first pressure threshold value and lasts for a first time length.
And S02, controlling the oil blockage preventing pipeline to be opened under the condition that the air conditioner meets the preset condition.
By adopting the method for preventing the oil blockage of the air conditioner, the air conditioner acquires the pressure of the air outlet of the compressor under the condition that the air conditioner is in the running state, and the preset condition is determined to be met under the condition that the pressure of the air outlet of the compressor is greater than the first pressure threshold value and lasts for the first time. When the throttling device is blocked by oil due to low temperature and high viscosity of lubricating oil, the pressure at the exhaust port of the compressor abnormally rises, and therefore when the pressure at the exhaust port of the compressor is detected to be greater than a first pressure threshold value and lasts for a first period of time, the phenomenon that the pressure at the exhaust port of the compressor abnormally rises is explained, so that the oil blockage at the throttling device can be determined.
Referring to fig. 3, an embodiment of the present disclosure provides a method for preventing oil blockage of an air conditioner, including:
and S01, under the condition that the air conditioner is in the running state, the air conditioner judges whether the preset condition is met according to the pressure of the air outlet of the compressor.
And S31, adjusting the opening of the oil blockage preventing pipeline to the initial opening when the air conditioner meets the preset condition.
And S32, after the second time, the air conditioner adjusts the opening of the oil blockage preventing pipeline according to the current exhaust pressure of the compressor.
The second duration is determined according to the initial opening, specifically, the duration corresponding to the initial opening can be determined through the first relation, and the duration is used as the second duration. The initial opening degree is inversely related to the second time length. The larger the initial opening degree is, the quicker the oil blockage problem of the air conditioner is solved, therefore, the pressure condition of the exhaust port of the compressor is detected again after the second time, the air conditioner can execute corresponding operation according to the current exhaust pressure in time, further oil blockage prevention operation is carried out or oil blockage prevention operation is quitted in time, the oil blockage prevention operation efficiency is improved, the oil blockage prevention operation is quitted in time, the influence of refrigerant shunting on the operation of the air conditioner can be avoided, and the stable operation of the air conditioner is ensured.
By adopting the method for preventing the oil blockage of the air conditioner, the problem of oil blockage exists in the air conditioner using the combustible refrigerant under the condition that the air conditioner meets the preset condition, so that the air conditioner adjusts the opening degree of the oil blockage prevention pipeline to the initial opening degree, and adjusts the opening degree of the oil blockage prevention pipeline according to the current exhaust pressure of the compressor after the second time period. Adjusting the oil blockage prevention pipeline to the initial opening degree possibly fails to solve the oil blockage problem of the air conditioner, so that after the second time, the air conditioner performs the opening degree adjustment of the oil blockage prevention pipeline again according to the current exhaust pressure, and the oil blockage prevention problem is not solved.
Referring to fig. 4, an embodiment of the present disclosure provides a method for preventing oil blockage of an air conditioner, including:
and S01, under the condition that the air conditioner is in the running state, the air conditioner judges whether the preset condition is met according to the pressure of the air outlet of the compressor.
And S31, adjusting the opening of the oil blockage preventing pipeline to the initial opening when the air conditioner meets the preset condition.
And S41, after the second time period, the air conditioner increases the opening of the oil blockage preventing pipeline under the condition that the current exhaust pressure is greater than a second pressure threshold value.
And S42, the air conditioner keeps the opening of the oil blockage preventing pipeline unchanged when the current exhaust pressure is less than or equal to the second pressure threshold.
By adopting the method for preventing the oil blockage of the air conditioner, after the air conditioner is in the second time period, under the condition that the current exhaust pressure is greater than the second pressure threshold value, at this time, the pressure at the exhaust port of the compressor is not obviously reduced, or the reduction degree in the second time period does not reach the expected reduction range, so that the air conditioner increases the opening degree of the oil blockage preventing pipeline to further increase the opening degree of the oil blockage preventing pipeline and increase the flow rate of the high-temperature combustible refrigerant flowing to the front end of the throttling device in the oil blockage preventing pipeline, and the oil blockage preventing problem is solved in the expected time. And the air conditioner indicates that the pressure at the exhaust port of the compressor is obviously reduced under the condition that the current exhaust pressure is less than or equal to the second pressure threshold value, or the reduction degree in the second time period reaches the expected reduction range, namely the air conditioner can solve the oil blockage prevention problem in the expected time period, so that the opening degree of the oil blockage prevention pipeline is kept unchanged.
Optionally, the air conditioner increases the opening degree of the oil blockage preventing pipeline, and includes: the air conditioner calculates the pressure difference value between the current exhaust pressure and a second pressure threshold value; and the air conditioner increases the opening of the oil blockage preventing pipeline to a target opening according to the pressure difference.
Therefore, the air conditioner calculates the pressure difference value between the current exhaust pressure and the second pressure threshold value, and increases the opening of the oil blockage preventing pipeline to the target opening according to the pressure difference value. The temperature condition of the combustible refrigerant at the throttling device after the initial opening degree is opened for the first time period can be reflected by the difference value of the current exhaust pressure and the second pressure threshold value. Therefore, based on the temperature condition of the combustible refrigerant at the throttling device, the opening of the oil blockage preventing pipeline is increased to the target opening, the opening of the oil blockage preventing pipeline can be matched with the current temperature of the combustible refrigerant at the throttling device, and the phenomenon that the refrigeration or heating effect of the air conditioner is influenced by overlarge opening or the oil blockage preventing pipeline cannot be prevented within the expected time due to overlow opening is avoided.
Optionally, the air conditioner increases the opening degree of the oil blockage prevention pipeline to a target opening degree according to the pressure difference, and the air conditioner includes: the air conditioner determines a target opening corresponding to the pressure difference value according to a preset corresponding relation; the air conditioner adjusts the opening of the oil blockage preventing pipeline to a target opening.
Therefore, the air conditioner determines the target opening corresponding to the pressure difference value according to the preset corresponding relation, and adjusts the opening of the oil blockage preventing pipeline to the target opening. Because the target opening corresponding to the pressure difference value is determined according to the preset corresponding relation, the current opening of the oil-blocking-preventing pipeline can be matched with the current temperature of the combustible refrigerant at the throttling device, so that the target opening of the oil-blocking-preventing pipeline can be more accurate, and the heating effect of the low-temperature combustible refrigerant at the throttling device is improved.
Referring to fig. 5, an embodiment of the present disclosure provides a method for preventing oil blockage of an air conditioner, including:
and S01, under the condition that the air conditioner is in the running state, the air conditioner judges whether the preset condition is met according to the pressure of the air outlet of the compressor.
And S02, controlling the oil blockage preventing pipeline to be opened under the condition that the air conditioner meets the preset condition.
And S51, the air conditioner closes the oil blockage preventing pipeline when the pressure of the exhaust port is less than or equal to the third pressure threshold and the temperature of the front end of the throttling device is greater than the temperature threshold.
By adopting the method for preventing the oil blockage of the air conditioner, the air conditioner is under the condition that the pressure of the air outlet is smaller than or equal to the third pressure threshold and the temperature of the front end of the throttling device is larger than the temperature threshold, at the moment, the pressure of the air outlet of the compressor is already in the normal pressure range, the temperature of the combustible refrigerant at the throttling device is also in the safe temperature range, and the air conditioner does not have the problem of oil blockage, so that the air conditioner closes the oil blockage prevention pipeline, and the influence of refrigerant shunting on the operation of the air conditioner is avoided. Whether the air conditioner recovers and has the problem of oil blockage is judged from two dimensions of the pressure of the air outlet of the compressor and the temperature of the combustible refrigerant at the throttling device, and the stability of using the combustible refrigerant air conditioner is improved.
Referring to fig. 6, an apparatus for preventing oil blockage of an air conditioner according to an embodiment of the present disclosure includes 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 through the bus 103. The communication interface 102 may be used for information transfer. The processor 100 may call the logic instructions in the memory 101 to execute the method for preventing the oil blockage of the air conditioner 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 is used as a computer readable storage medium 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 method for preventing oil blockage of the air conditioner 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.
The embodiment of the disclosure provides an air conditioner, which comprises an oil blockage preventing pipeline connected with an exhaust port of a compressor and the front end of a throttling device; and the oil blockage preventing device for the air conditioner.
The embodiment of the disclosure provides a storage medium, which stores computer-executable instructions configured to execute the method for preventing the oil blockage of the air conditioner.
The storage medium may be a transitory storage medium or a non-transitory 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 simplicity of description, the specific working processes of the above-described systems, apparatuses, and units 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 only one type of logical functional division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or may be 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. The method for preventing the oil blockage of the air conditioner is characterized in that the air conditioner comprises an oil blockage preventing pipeline which is connected with an exhaust port of a compressor and the front end of a throttling device; the method comprises the following steps:
under the condition that the air conditioner is in an operating state, judging whether a preset condition is met or not according to the pressure of the exhaust port of the compressor;
and controlling the oil blockage preventing pipeline to be opened under the condition of meeting the preset condition.
2. The method of claim 1, wherein said determining whether a predetermined condition is satisfied based on the pressure at the compressor discharge comprises:
acquiring the pressure of the exhaust port of the compressor;
determining that the preset condition is met if the compressor discharge pressure is greater than a first pressure threshold for a first duration.
3. The method according to claim 1, wherein said controlling said oil blockage resistant line open comprises:
adjusting the opening degree of the oil blockage preventing pipeline to an initial opening degree;
and after the second time, adjusting the opening of the oil blockage preventing pipeline according to the current exhaust pressure of the compressor.
4. The method according to claim 3, wherein the adjusting the opening of the oil blockage prevention pipeline according to the current discharge pressure of the compressor comprises:
under the condition that the current exhaust pressure is greater than a second pressure threshold value, increasing the opening of the oil blockage preventing pipeline;
and keeping the opening of the oil blockage preventing pipeline unchanged under the condition that the current exhaust pressure is less than or equal to a second pressure threshold value.
5. The method according to claim 4, wherein the increasing the opening of the oil-blocked pipe comprises:
calculating a pressure difference between the current exhaust pressure and the second pressure threshold;
and increasing the opening degree of the oil blockage prevention pipeline to a target opening degree according to the pressure difference value.
6. The method according to claim 5, wherein the increasing the opening degree of the oil blockage preventing pipeline to a target opening degree according to the pressure difference comprises:
determining a target opening corresponding to the pressure difference value according to a preset corresponding relation;
and adjusting the opening of the oil blockage prevention pipeline to the target opening.
7. The method according to any one of claims 1 to 6, wherein after controlling the oil blockage preventing pipeline to be opened under the condition that the preset condition is met, the method further comprises:
and closing the oil blockage preventing pipeline under the condition that the pressure of the exhaust port is less than or equal to a third pressure threshold and the temperature of the front end of the throttling device is greater than a temperature threshold.
8. An oil-blockage preventing device for an air conditioner, comprising a processor and a memory storing program instructions, wherein the processor is configured to execute the method for preventing oil-blockage of an air conditioner according to any one of claims 1 to 7 when executing the program instructions.
9. An air conditioner is characterized by comprising an oil blockage preventing pipeline which is connected with an exhaust port of a compressor and the front end of a throttling device; and the oil blockage preventing device for the air conditioner as claimed in claim 8.
10. A storage medium storing program instructions, characterized in that said program instructions, when executed, perform the method for preventing oil blockage of an air conditioner according to any one of claims 1 to 7.
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| CN202210573692.3A CN115076869A (en) | 2022-05-25 | 2022-05-25 | Oil blockage preventing method and device for air conditioner, air conditioner and storage medium |
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| CN202210573692.3A CN115076869A (en) | 2022-05-25 | 2022-05-25 | Oil blockage preventing method and device for air conditioner, air conditioner and storage medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114992899A (en) * | 2022-06-10 | 2022-09-02 | 海信空调有限公司 | Air conditioner and oil blockage prevention control method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114992899A (en) * | 2022-06-10 | 2022-09-02 | 海信空调有限公司 | Air conditioner and oil blockage prevention control method thereof |
| CN114992899B (en) * | 2022-06-10 | 2023-06-16 | 海信空调有限公司 | Air conditioner and oil blocking prevention control method thereof |
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