CN113531785A - Control method and device of air conditioner, storage medium, processor and air conditioner - Google Patents
Control method and device of air conditioner, storage medium, processor and air conditioner Download PDFInfo
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- CN113531785A CN113531785A CN202110853427.6A CN202110853427A CN113531785A CN 113531785 A CN113531785 A CN 113531785A CN 202110853427 A CN202110853427 A CN 202110853427A CN 113531785 A CN113531785 A CN 113531785A
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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
- F24F11/49—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring ensuring correct operation, e.g. by trial operation or configuration checks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1931—Discharge pressures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1933—Suction pressures
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a control method and a control device of an air conditioner, a storage medium, a processor and the air conditioner, wherein the control method of the air conditioner comprises the following steps: receiving a starting signal; acquiring a first initial pressure value P1 at the outlet of the compressor of the air conditioner and a second initial pressure value P2 at the inlet of the compressor in response to the starting signal; determining whether the relationship between the first initial pressure value P1 and the second initial pressure value P2 meets a predetermined condition; and controlling the compressor to start under the condition that the relation between the first initial pressure value P1 and the second initial pressure value P2 meets a preset condition. The control method of the air conditioner solves the problem that the compressor is damaged when the compressor is started because the pressure difference between the inlet and the outlet of the compressor does not reach the balance requirement in the related technology.
Description
Technical Field
The invention relates to the field of air conditioners, in particular to a control method and device of an air conditioner, a storage medium, a processor and the air conditioner.
Background
In the related art, after the air conditioner is turned off, the air conditioner generally needs to wait for a period of time to be started again, so that the internal high and low pressures of the air conditioning system are balanced as much as possible, but in some cases, although the air conditioner is stopped for a period of time after being turned off, the pressure in the air conditioning system is not effectively balanced, and the compressor is easily damaged in the starting process of the air conditioner, so that the service life of the compressor is shortened.
In view of the above problems, no effective solution has been proposed.
The above information disclosed in the background section is only for enhancement of understanding of the background of the technology described herein. The background art may therefore contain certain information that does not form the known prior art to those skilled in the art.
Disclosure of Invention
The embodiment of the invention provides a control method and device of an air conditioner, a storage medium, a processor and the air conditioner, which are used for at least solving the problem that a compressor is damaged when the compressor is started because the pressure difference between an inlet and an outlet of the compressor does not reach the balance requirement in the related technology.
In order to achieve the above object, according to a first aspect of embodiments of the present invention, there is provided a control method of an air conditioner, the method including: receiving a starting signal; acquiring a first initial pressure value P1 at the outlet of the compressor of the air conditioner and a second initial pressure value P2 at the inlet of the compressor in response to the starting signal; determining whether the relationship between the first initial pressure value P1 and the second initial pressure value P2 meets a predetermined condition; and controlling the compressor to start under the condition that the relation between the first initial pressure value P1 and the second initial pressure value P2 meets a preset condition.
Further, determining whether the relationship between the first initial pressure value P1 and the second initial pressure value P2 meets a predetermined condition includes: calculating the difference value between the first initial pressure value P1 and the second initial pressure value P2 to obtain a pressure difference value delta P; in the case where the pressure difference Δ P is less than or equal to the first preset pressure difference P8, determining that the relationship between the first initial pressure value P1 and the second initial pressure value P2 satisfies the predetermined condition; in the case where the pressure difference Δ P is greater than the first preset pressure difference P8, it is determined that the relationship between the first initial pressure value P1 and the second initial pressure value P2 does not meet the predetermined condition.
Further, in case the relationship between the first initial pressure value P1 and the second initial pressure value P2 does not comply with the predetermined condition, the method further comprises: controlling an outdoor fan of the air conditioner to operate at a first preset rotating speed and/or controlling the opening degree of an expansion valve of the air conditioner to be increased to a preset opening degree; acquiring a first current pressure value P3 at the outlet of the compressor and a second current pressure value P4 at the inlet of the compressor; in the case where the relationship between the first current pressure value P3 and the second current pressure value P4 meets a predetermined condition, the compressor is controlled to be started.
Further, controlling an outdoor fan of the air conditioner to operate at a first preset rotation speed, and/or controlling an opening degree of an expansion valve of the air conditioner to increase to a preset opening degree, includes: controlling an outdoor fan of the air conditioner to operate at a first preset rotating speed or controlling the opening degree of an expansion valve of the air conditioner to increase to a preset opening degree under the condition that the pressure difference value delta P is greater than a first preset pressure difference P8 and less than or equal to a second preset pressure difference P9; and under the condition that the pressure difference value delta P is greater than the second preset pressure difference P9, controlling an outdoor fan of the air conditioner to operate at a first preset rotating speed, and controlling the opening degree of an expansion valve of the air conditioner to be increased to a preset opening degree.
Further, in case the relationship between the first initial pressure value P1 and the second initial pressure value P2 does not comply with the predetermined condition, the method further comprises: and controlling an indoor fan of the air conditioner to operate at a second preset rotating speed.
Further, in case the relationship between the first initial pressure value P1 and the second initial pressure value P2 does not comply with the predetermined condition, the method further comprises: and controlling the opening of a bypass valve of the expansion valve, wherein the bypass valve is arranged on a bypass pipeline of the expansion valve.
According to a second aspect of the embodiments of the present invention, there is provided a control apparatus of an air conditioner, including: a receiving unit for receiving a start signal; a first obtaining unit for obtaining a first initial pressure value P1 at the outlet of the compressor and a second initial pressure value P2 at the inlet of the compressor of the air conditioner in response to the starting signal; a determination unit for determining whether a relationship between the first initial pressure value P1 and the second initial pressure value P2 meets a predetermined condition; a first control unit for controlling the compressor to start in case the relationship between the first initial pressure value P1 and the second initial pressure value P2 meets a predetermined condition.
According to a third aspect of the embodiments of the present invention, there is provided a nonvolatile storage medium including a stored program, wherein an apparatus in which the nonvolatile storage medium is controlled at the time of execution of the program performs the control method of the air conditioner described above.
According to a fourth aspect of the embodiments of the present invention, there is provided a processor for executing a program, wherein the program executes the control method of the air conditioner.
According to a fifth aspect of the embodiments of the present invention, there is provided an air conditioner including an outdoor heat exchanger, an outdoor fan for blowing air to the outdoor heat exchanger, an indoor fan for blowing air to the indoor heat exchanger, an expansion valve, and a compressor, the air conditioner further including: a first pressure detecting element connected to an outlet of the compressor to detect a pressure at the outlet of the compressor; a second pressure detecting element connected to an inlet of the compressor to detect a pressure at the inlet of the compressor; the controller is in communication connection with the first pressure detection element, the second pressure detection element, the compressor, the outdoor fan, the indoor fan and the expansion valve, a program is stored in the controller, and the control method of the air conditioner is executed when the program runs.
Further, the air conditioner further includes: two ends of the bypass pipeline are connected with two ends of the expansion valve in a one-to-one correspondence manner; the bypass valve is arranged on the bypass pipeline; the control method of the air conditioner further comprises the following steps: in case the relation between the first initial pressure value P1 and the second initial pressure value P2 does not comply with the predetermined condition, controlling the bypass valve to open.
The control method of the air conditioner applying the technical scheme of the invention comprises the following steps: receiving a starting signal; acquiring a first initial pressure value P1 at the outlet of the compressor of the air conditioner and a second initial pressure value P2 at the inlet of the compressor in response to the starting signal; determining whether the relationship between the first initial pressure value P1 and the second initial pressure value P2 meets a predetermined condition; and controlling the compressor to start under the condition that the relation between the first initial pressure value P1 and the second initial pressure value P2 meets a preset condition. In this way, after the air conditioner receives the starting signal, the first initial pressure value P1 at the outlet of the compressor and the second initial pressure value P2 at the inlet of the compressor are obtained in response to the starting signal, and the compressor is controlled to start only when the relationship between the first initial pressure value P1 and the second initial pressure value P2 meets the preset condition. By adopting the control mode, the pressure difference of the inlet and the outlet of the compressor can be ensured to meet the preset condition when the compressor is started, the problem that the compressor is damaged when the compressor is started because the pressure difference of the inlet and the outlet of the compressor does not reach the balance requirement in the related technology can be solved, the protection of the compressor is facilitated, and the service life of the compressor is prolonged.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a schematic flowchart of an alternative embodiment of a control method of an air conditioner according to the present invention;
fig. 2 is a schematic view of an alternative embodiment of a control apparatus of an air conditioner according to the present invention;
FIG. 3 is a schematic diagram of an alternative embodiment of an air conditioner according to the present invention;
fig. 4 is a schematic view of another alternative embodiment of an air conditioner according to the present invention.
Wherein the figures include the following reference numerals:
1. an outdoor heat exchanger; 2. an indoor heat exchanger; 3. an expansion valve; 4. a compressor; 5. a first pressure detecting element; 6. a second pressure detecting element; 7. a bypass valve.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention 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 is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. Also, in the specification and claims, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element or "connected" to the other element through a third element.
Fig. 1 is a flowchart illustrating a control method of an air conditioner according to an embodiment of the present invention, as shown in fig. 1, the method including the steps of:
step S102, receiving a starting signal;
step S104, responding to the starting signal, acquiring a first initial pressure value P1 at the outlet of the compressor 4 of the air conditioner and a second initial pressure value P2 at the inlet of the compressor 4;
step S106, determining whether the relation between the first initial pressure value P1 and the second initial pressure value P2 meets a preset condition;
in step S108, the compressor 4 is controlled to start in case the relationship between the first initial pressure value P1 and the second initial pressure value P2 meets a predetermined condition.
The control method of the air conditioner adopting the scheme comprises the following steps: receiving a starting signal; in response to the start signal, acquiring a first initial pressure value P1 at the outlet of the compressor 4 and a second initial pressure value P2 at the inlet of the compressor 4 of the air conditioner; determining whether the relationship between the first initial pressure value P1 and the second initial pressure value P2 meets a predetermined condition; in the case where the relationship between the first initial pressure value P1 and the second initial pressure value P2 meets a predetermined condition, the compressor 4 is controlled to start. In this way, after the air conditioner receives the starting signal, the first initial pressure value P1 at the outlet of the compressor and the second initial pressure value P2 at the inlet of the compressor are obtained in response to the starting signal, and the compressor is controlled to start only when the relationship between the first initial pressure value P1 and the second initial pressure value P2 meets the preset condition. By adopting the control mode, the pressure difference of the inlet and the outlet of the compressor can be ensured to meet the preset condition when the compressor is started, the problem that the compressor is damaged when the compressor is started because the pressure difference of the inlet and the outlet of the compressor does not reach the balance requirement in the related technology can be solved, the protection of the compressor is facilitated, and the service life of the compressor is prolonged.
Determining whether the relationship between the first initial pressure value P1 and the second initial pressure value P2 meets a predetermined condition includes: calculating the difference value between the first initial pressure value P1 and the second initial pressure value P2 to obtain a pressure difference value delta P; in the case where the pressure difference Δ P is less than or equal to the first preset pressure difference P8, determining that the relationship between the first initial pressure value P1 and the second initial pressure value P2 satisfies the predetermined condition; in the case where the pressure difference Δ P is greater than the first preset pressure difference P8, it is determined that the relationship between the first initial pressure value P1 and the second initial pressure value P2 does not meet the predetermined condition. Of course, the manner of determining whether the relationship between the first initial pressure value P1 and the second initial pressure value P2 meets the predetermined condition is not limited to the above manner, and the specific determination rule may be flexibly selected according to actual conditions. For example, in order to better adapt to different compressors, in another alternative, it is possible to determine whether the ratio between the first initial pressure value P1 and the second initial pressure value P2 is less than a preset ratio, and when the ratio is less than the preset ratio, it is determined that the relationship between the first initial pressure value P1 and the second initial pressure value P2 meets the predetermined condition, otherwise it does not meet the predetermined condition.
In case the relationship between the first initial pressure value P1 and the second initial pressure value P2 does not comply with the predetermined condition, the method further comprises: controlling an outdoor fan of the air conditioner to operate at a first preset rotating speed and/or controlling the opening degree of an expansion valve 3 of the air conditioner to be increased to a preset opening degree; acquiring a first current pressure value P3 at the outlet of the compressor 4 and a second current pressure value P4 at the inlet of the compressor 4; in the case where the relationship between the first current pressure value P3 and the second current pressure value P4 meets a predetermined condition, the compressor 4 is controlled to start. By controlling the outdoor fan of the air conditioner to operate at the first preset rotating speed and/or controlling the opening degree of the expansion valve 3 of the air conditioner to be increased to the preset opening degree, the pressure balance process at the inlet and the outlet of the compressor 4 is accelerated, so that the pressure difference at the inlet and the outlet of the compressor 4 reaches a proper level as soon as possible, and the compressor 4 is started as soon as possible without damaging the compressor 4. The preset opening degree may be flexibly determined according to actual conditions, and for example, it is preferable that the preset opening degree is 400.
Controlling an outdoor fan of the air conditioner to operate at a first preset rotating speed and/or controlling the opening degree of an expansion valve 3 of the air conditioner to increase to a preset opening degree, comprising: controlling an outdoor fan of the air conditioner to operate at a first preset rotation speed or controlling an opening degree of an expansion valve 3 of the air conditioner to increase to a preset opening degree under the condition that the pressure difference value delta P is greater than the first preset pressure difference P8 and less than or equal to a second preset pressure difference P9; and under the condition that the pressure difference value delta P is greater than the second preset pressure difference P9, controlling the outdoor fan of the air conditioner to operate at a first preset rotating speed, and controlling the opening degree of the expansion valve 3 of the air conditioner to be increased to a preset opening degree. Therefore, the pressure difference condition of the inlet and the outlet of the compressor 4 can be controlled more pertinently, when the pressure difference is smaller, the outdoor fan of the air conditioner can be controlled to operate at a first preset rotating speed, or the opening degree of the expansion valve 3 of the air conditioner is controlled to be increased to a preset opening degree to accelerate the pressure balance, and when the pressure difference is larger, two means can be adopted at the same time to further accelerate the pressure balance. In specific implementation, the first predetermined pressure difference P8, the second predetermined pressure difference P9 and the first predetermined rotation speed can be flexibly selected according to actual conditions, for example, in the embodiment, the first predetermined pressure difference P8 is 0.1MPa, the second predetermined pressure difference P9 is 0.5MPa, and the first predetermined rotation speed is 750 rpm.
In case the relationship between the first initial pressure value P1 and the second initial pressure value P2 does not comply with the predetermined condition, the method further comprises: and controlling an indoor fan of the air conditioner to operate at a second preset rotating speed. Therefore, the heat exchange of the indoor heat exchanger 2 can be enhanced, the pressure balance of the inlet and the outlet of the compressor 4 can be further accelerated, and the compressor 4 can be started safely and quickly.
Further, optionally, in case the relationship between the first initial pressure value P1 and the second initial pressure value P2 does not comply with the predetermined condition, the method further comprises: a bypass valve 7 of the expansion valve 3 is controlled to be opened, and the bypass valve 7 is installed on a bypass line of the expansion valve 3. Thus, the refrigerant can more rapidly flow between the outdoor heat exchanger 1 and the indoor heat exchanger 2 through the bypass line, thereby more rapidly balancing the pressure at the inlet and outlet of the compressor 4.
As shown in fig. 2, an embodiment of the present invention also provides a control apparatus of an air conditioner, including: a receiving unit for receiving a start signal; a first obtaining unit for obtaining a first initial pressure value P1 at an outlet of the compressor 4 and a second initial pressure value P2 at an inlet of the compressor 4 of the air conditioner in response to the start signal; a determination unit for determining whether a relationship between the first initial pressure value P1 and the second initial pressure value P2 meets a predetermined condition; a first control unit for controlling the compressor 4 to start in case the relationship between the first initial pressure value P1 and the second initial pressure value P2 complies with predetermined conditions.
The determining unit comprises a calculating module, a first determining module and a second determining module: the calculation module is used for calculating the difference value between the first initial pressure value P1 and the second initial pressure value P2 to obtain a pressure difference value delta P; the first determination module is used for determining that the relation between the first initial pressure value P1 and the second initial pressure value P2 meets a preset condition under the condition that the pressure difference value delta P is smaller than or equal to a first preset pressure difference P8; the second determination module is configured to determine that a relationship between the first initial pressure value P1 and the second initial pressure value P2 does not meet a predetermined condition if the pressure difference Δ P is greater than the first preset pressure difference P8.
In the case where the relationship between the first initial pressure value P1 and the second initial pressure value P2 does not comply with the predetermined condition, the device further comprises a second control unit, a second acquisition unit and a third control unit: the second control unit is used for controlling an outdoor fan of the air conditioner to operate at a first preset rotating speed and/or controlling the opening degree of an expansion valve 3 of the air conditioner to be increased to a preset opening degree; the second acquisition unit is used for acquiring a first current pressure value P3 at the outlet of the compressor 4 and a second current pressure value P4 at the inlet of the compressor 4; the third control unit is adapted to controlling the compressor 4 to start in case the relation between the first current pressure value P3 and the second current pressure value P4 fulfils a predetermined condition.
The second control unit comprises a first control module and a second control module: the first control module is used for controlling an outdoor fan of the air conditioner to operate at a first preset rotating speed or controlling the opening degree of an expansion valve 3 of the air conditioner to be increased to a preset opening degree under the condition that the pressure difference value delta P is larger than a first preset pressure difference P8 and smaller than or equal to a second preset pressure difference P9; the second control module is used for controlling the outdoor fan of the air conditioner to operate at a first preset rotating speed and controlling the opening degree of the expansion valve 3 of the air conditioner to be increased to a preset opening degree under the condition that the pressure difference value delta P is larger than a second preset pressure difference P9.
The apparatus further comprises a fourth control unit: the fourth control unit is used for controlling the indoor fan of the air conditioner to operate at a second preset rotating speed under the condition that the relation between the first initial pressure value P1 and the second initial pressure value P2 does not meet the preset condition.
The apparatus further comprises a fifth control unit: the fifth control unit is adapted to controlling the bypass valve 7 of the expansion valve 3 to open, the bypass valve 7 being mounted on the bypass line of the expansion valve 3, in case the relationship between the first initial pressure value P1 and the second initial pressure value P2 does not comply with the predetermined condition.
Secondly, an embodiment of the present invention further provides a nonvolatile storage medium, where the nonvolatile storage medium includes a stored program, and a device in which the nonvolatile storage medium is controlled to execute the control method of the air conditioner when the program runs.
In addition, the embodiment of the invention also provides a processor, wherein the processor is used for running the program, and the program executes the control method of the air conditioner when running.
As shown in fig. 3, an embodiment of the present invention further provides an air conditioner, including an outdoor heat exchanger 1, an outdoor fan for blowing air to the outdoor heat exchanger 1, an indoor heat exchanger 2, an indoor fan for blowing air to the indoor heat exchanger 2, an expansion valve 3, and a compressor 4, and further including: a first pressure detecting element 5, the first pressure detecting element 5 being connected to an outlet of the compressor 4 to detect a pressure at the outlet of the compressor 4; a second pressure detecting element 6, the second pressure detecting element 6 being connected to the inlet of the compressor 4 to detect the pressure at the inlet of the compressor 4; the controller, the first pressure detecting element 5, the second pressure detecting element 6, the compressor 4, the outdoor fan, the indoor fan and the expansion valve 3 are all in communication connection with the controller, programs are stored in the controller, and when the programs run, the control method of the air conditioner is executed.
As shown in fig. 4, in another embodiment, the air conditioner further includes: two ends of the bypass pipeline are correspondingly connected with two ends of the expansion valve 3 one by one; a bypass valve 7, the bypass valve 7 being mounted on the bypass line; the control method of the air conditioner further comprises the following steps: when the relationship between the first initial pressure value P1 and the second initial pressure value P2 does not satisfy the predetermined condition, the bypass valve 7 is controlled to be opened, and at this time, the refrigerant can more rapidly flow between the outdoor heat exchanger 1 and the indoor heat exchanger 2 through the bypass line, so that the pressures at the inlet and the outlet of the compressor 4 can be more rapidly balanced.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments. Moreover, the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer-executable instructions, and while a logical order is illustrated in the flowcharts, in some cases, the steps illustrated or described may be performed in an order different than here.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be 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, units or modules, and may be in an electrical 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 units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention 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 integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing 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 according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (11)
1. A method for controlling an air conditioner, the method comprising:
receiving a starting signal;
in response to the starting signal, acquiring a first initial pressure value P1 at the outlet of a compressor (4) of the air conditioner and a second initial pressure value P2 at the inlet of the compressor (4);
determining whether a relationship between the first initial pressure value P1 and the second initial pressure value P2 meets a predetermined condition;
controlling the compressor (4) to start in case the relation between the first initial pressure value P1 and the second initial pressure value P2 complies with the predetermined condition.
2. The control method of an air conditioner according to claim 1, wherein determining whether the relationship between the first initial pressure value P1 and the second initial pressure value P2 meets a predetermined condition includes:
calculating the difference value between the first initial pressure value P1 and the second initial pressure value P2 to obtain a pressure difference value delta P;
in the case where the pressure difference Δ P is less than or equal to a first preset pressure difference P8, determining that the relationship between the first initial pressure value P1 and the second initial pressure value P2 complies with the predetermined condition;
in the case where the pressure difference Δ P is greater than a first preset pressure difference P8, it is determined that the relationship between the first initial pressure value P1 and the second initial pressure value P2 does not comply with the predetermined condition.
3. The control method of an air conditioner according to claim 2, characterized in that in case the relationship between the first initial pressure value P1 and the second initial pressure value P2 does not comply with the predetermined condition, the method further comprises:
controlling an outdoor fan of the air conditioner to operate at a first preset rotating speed, and/or controlling the opening degree of an expansion valve (3) of the air conditioner to be increased to a preset opening degree;
obtaining a first current pressure value P3 at the outlet of the compressor (4) and a second current pressure value P4 at the inlet of the compressor (4);
controlling the compressor (4) to start in case the relation between the first current pressure value P3 and the second current pressure value P4 complies with the predetermined condition.
4. The control method of an air conditioner according to claim 3, wherein controlling an outdoor fan of the air conditioner to operate at a first preset rotation speed and/or controlling an opening degree of an expansion valve (3) of the air conditioner to increase to a preset opening degree comprises:
controlling an outdoor fan of the air conditioner to operate at the first preset rotating speed or controlling the opening degree of an expansion valve (3) of the air conditioner to increase to the preset opening degree under the condition that the pressure difference value delta P is larger than the first preset pressure difference P8 and smaller than or equal to a second preset pressure difference P9;
and under the condition that the pressure difference value delta P is greater than the second preset pressure difference P9, controlling an outdoor fan of the air conditioner to operate at the first preset rotating speed, and controlling the opening degree of an expansion valve (3) of the air conditioner to be increased to the preset opening degree.
5. The control method of an air conditioner according to claim 3, characterized in that in case the relationship between the first initial pressure value P1 and the second initial pressure value P2 does not comply with the predetermined condition, the method further comprises:
and controlling an indoor fan of the air conditioner to operate at a second preset rotating speed.
6. The control method of an air conditioner according to claim 3, characterized in that in case the relationship between the first initial pressure value P1 and the second initial pressure value P2 does not comply with the predetermined condition, the method further comprises:
and controlling the opening of a bypass valve (7) of the expansion valve (3), wherein the bypass valve (7) is arranged on a bypass pipeline of the expansion valve (3).
7. A control apparatus of an air conditioner, comprising:
a receiving unit for receiving a start signal;
a first acquisition unit for acquiring, in response to said start signal, a first initial pressure value P1 at the outlet of the compressor (4) of said air conditioner and a second initial pressure value P2 at the inlet of said compressor (4);
a determination unit for determining whether a relationship between the first initial pressure value P1 and the second initial pressure value P2 meets a predetermined condition;
a first control unit for controlling the compressor (4) to start if the relationship between the first initial pressure value P1 and the second initial pressure value P2 meets the predetermined condition.
8. A nonvolatile storage medium characterized by comprising a stored program, wherein a device in which the nonvolatile storage medium is installed is controlled to execute the control method of the air conditioner according to any one of claims 1 to 6 when the program is executed.
9. A processor, characterized in that the processor is configured to execute a program, wherein the program executes the control method of the air conditioner according to any one of claims 1 to 6.
10. An air conditioner, including outdoor heat exchanger (1), be used for to outdoor fan, indoor heat exchanger (2) of outdoor heat exchanger (1) blowing, be used for to indoor fan, expansion valve (3) and compressor (4) of indoor heat exchanger (2) blowing, its characterized in that, the air conditioner still includes:
a first pressure detection element (5), said first pressure detection element (5) being connected to the outlet of said compressor (4) to detect the pressure at the outlet of said compressor (4);
a second pressure detecting element (6), said second pressure detecting element (6) being connected to an inlet of said compressor (4) to detect a pressure at said compressor (4) inlet;
a controller, wherein the first pressure detecting element (5), the second pressure detecting element (6), the compressor (4), the outdoor fan, the indoor fan and the expansion valve (3) are all connected with the controller in a communication manner, a program is stored in the controller, and the program executes the control method of the air conditioner according to any one of claims 1 to 5 when running.
11. The air conditioner according to claim 10, further comprising:
two ends of the bypass pipeline are correspondingly connected with two ends of the expansion valve (3) one by one;
a bypass valve (7), said bypass valve (7) being mounted to said bypass line;
the control method of the air conditioner further comprises the following steps: controlling the bypass valve (7) to open in case the relationship between the first initial pressure value P1 and the second initial pressure value P2 does not comply with the predetermined condition.
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