WO2021218485A1 - Air conditioner and control method therefor, and computer-readable storage medium - Google Patents

Air conditioner and control method therefor, and computer-readable storage medium Download PDF

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Publication number
WO2021218485A1
WO2021218485A1 PCT/CN2021/081957 CN2021081957W WO2021218485A1 WO 2021218485 A1 WO2021218485 A1 WO 2021218485A1 CN 2021081957 W CN2021081957 W CN 2021081957W WO 2021218485 A1 WO2021218485 A1 WO 2021218485A1
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WIPO (PCT)
Prior art keywords
compressor
operating frequency
frequency
air conditioner
pressure switch
Prior art date
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PCT/CN2021/081957
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French (fr)
Chinese (zh)
Inventor
张铭
王海胜
张晓迪
李召勇
Original Assignee
青岛海尔空调电子有限公司
海尔智家股份有限公司
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Publication of WO2021218485A1 publication Critical patent/WO2021218485A1/en

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Classifications

    • 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
    • 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
    • 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
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature
    • 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

Definitions

  • the invention belongs to the technical field of air conditioning, and specifically relates to an air conditioner, a control method thereof, and a computer-readable storage medium.
  • the refrigeration cycle system of the air conditioner is generally equipped with a high-pressure pressure switch.
  • the air conditioner restarts operation. Therefore, when the air conditioner is out of operation, it cannot provide cooling or heat to the room, and cannot meet the user's demand for the air conditioner.
  • the present invention provides an air conditioner and a control method thereof, so as to solve the problem that the air conditioner shuts down due to the pressure at the high pressure switch being higher than the action value of the high pressure switch, which cannot satisfy the user’s requirements for the air conditioner.
  • a control method of an air conditioner :
  • the operating frequency of the compressor when the operating frequency of the compressor is less than or equal to the set frequency and the high-pressure pressure switch is open, control the operating frequency of the compressor to decrease until the high-pressure pressure switch is closed, and then control the compressor
  • the operating frequency is up-frequency and the maximum operating frequency of the compressor up-frequency does not exceed the limit frequency.
  • the operating frequency of the compressor when the operating frequency of the compressor is greater than the set frequency, and when the condensing temperature is greater than the second set condensing temperature, the operating frequency of the compressor is adjusted so that the condensing The temperature is maintained at the second set condensation temperature, and the first set condensation temperature is greater than the second set condensation temperature.
  • the operating frequency of the compressor is controlled to decrease in a stepwise manner during the process of controlling the operating frequency of the compressor to be closed until the high-pressure pressure switch is closed.
  • the decrease in the operating frequency of the compressor is the same, or the decrease in the operating frequency of the compressor in the next time is smaller than the decrease in the operating frequency of the compressor in the previous time.
  • the limiting frequency is less than the operating frequency of the compressor when the high-pressure pressure switch is turned off.
  • the high-pressure pressure switch in the process of controlling the operating frequency of the compressor to increase, if the operating frequency of the compressor increases to the limit frequency, the high-pressure pressure switch is not turned off, and the compressor is controlled.
  • the machine is running at the limited frequency.
  • the operating frequency of the compressor in the process of controlling the operating frequency of the compressor to increase, if the high-pressure pressure switch is opened, the operating frequency of the compressor is controlled to decrease until the high-pressure pressure switch is closed, and then The operating frequency of the compressor is controlled to increase frequency, and the limiting frequency during the next compressor operating frequency upscaling process is less than the limiting frequency during the previous compressor operating frequency upscaling process.
  • the condensation temperature is the outlet temperature of the indoor heat exchanger; when the air conditioner is in the cooling state, the condensation temperature is the outdoor The temperature of the heat exchanger.
  • a computer-readable storage medium stores a computer program used in combination with the air conditioner, and the computer program can be executed by a processor to implement the above-mentioned method.
  • An air conditioner including:
  • Condensing temperature detection module used to detect the condensing temperature
  • the control module is used to obtain the compressor's operating frequency, condensing temperature and the state of the high-pressure pressure switch, and control the compressor's operating frequency according to the above-mentioned control method.
  • the control method of the air conditioner of the present invention first controls the operating frequency of the compressor according to the condensing temperature to ensure that the high-pressure pressure switch is not turned off, and further, if the high-pressure pressure switch is turned off Control the compressor frequency to continue to decrease until the high-pressure pressure switch is closed, and then control the compressor operating frequency to increase and the maximum operating frequency of the compressor does not exceed the limit frequency to ensure that the high-pressure pressure switch does not open. Therefore, the present invention adjusts the operating frequency of the compressor. When the high-pressure pressure switch is turned off, the compressor is controlled to continue to run but the operating frequency is reduced.
  • the frequency-up control is performed to repeat the operating frequency of the compressor. Adjust so that the operating frequency of the compressor reaches a certain range, to ensure the continuous operation of the air-conditioning system, and to achieve continuous provision of cooling or heating effects.
  • Fig. 1 is a schematic diagram of an air-conditioning refrigeration system according to a specific embodiment of the present invention.
  • Fig. 2 is a flowchart of a control method of an air conditioner in a heating state according to a specific embodiment of the present invention.
  • Fig. 3 is a flowchart of a control method of an air conditioner in a cooling state according to a specific embodiment of the present invention.
  • Fig. 4 is a functional block diagram of an air conditioner according to a specific embodiment of the present invention.
  • the terms “installed”, “connected”, and “connected” should be understood in a broad sense. For example, they can be fixed or fixed. It is a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • installed e.g., they can be fixed or fixed. It is a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • the specific meaning of the above-mentioned terms in the present invention can be understood according to specific circumstances.
  • the control method of the air conditioner of this embodiment first controls the operating frequency of the compressor according to the condensation temperature to ensure that the pressure at the high-pressure pressure switch is not higher than the action value of the high-pressure pressure switch. Further, if the pressure at the high-pressure pressure switch still rises to When the high-pressure pressure switch is off, control the compressor frequency to continue to decrease until the high-pressure pressure switch is closed, and then control the compressor to increase the operating frequency and the maximum operating frequency of the compressor does not exceed the limit frequency to ensure the pressure at the high-pressure pressure switch Not higher than the operating value of the high-pressure pressure switch; during frequency up, if the high-pressure pressure switch is activated, the operating frequency of the compressor is controlled to decrease, cyclically, and the operating frequency of the compressor is repeatedly adjusted to make the operating frequency of the compressor reach a certain The proper range can ensure the continuous operation of the air-conditioning system and realize the continuous provision of cooling or heating effects.
  • the refrigeration system of the air conditioner of this embodiment includes a compressor, a four-way valve, an indoor heat exchanger, a throttling device, and an outdoor heat exchanger.
  • the system is equipped with a high-pressure pressure switch and a low-pressure pressure switch.
  • the high-pressure pressure switch has a high-pressure action value
  • the low-pressure pressure switch has a low-pressure action value
  • the high-pressure pressure switch and the low-pressure pressure switch are normally closed switches, and the pressure at the high-pressure pressure switch is greater than the high-pressure action value.
  • the high-pressure pressure switch is turned off, when the pressure at the low-pressure pressure switch is lower than the low-pressure action value, the low-pressure pressure switch is turned off.
  • this embodiment takes the action of the high-pressure pressure switch as one of the parameters of the compressor control.
  • the control method of the air conditioner in this embodiment is as follows:
  • the condensing temperature is obtained, and when the condensing temperature is greater than the second set condensing temperature, the operating frequency of the compressor is adjusted to maintain the condensing temperature at the second set condensing temperature to ensure that the high-pressure pressure switch is not turned off.
  • the second set condensing temperature is a temperature at which the high-pressure pressure switch will not be turned off, which is determined through experiments in advance. If the condensing temperature continues to rise, when the condensing temperature is greater than the first set condensing temperature, the operating frequency of the compressor is adjusted to decrease to the set frequency.
  • the first set condensing temperature is a temperature at which the high-pressure pressure switch will not be turned off and is close to the action value of the high-pressure pressure switch, and the first set condensing temperature is greater than the second set condensing temperature.
  • the operating frequency of the compressor is controlled to decrease in a stepwise manner.
  • the reduction range of the compressor operating frequency is the same, or the reduction range of the next compressor operating frequency is smaller than the reduction range of the previous compressor operating frequency, so as to achieve more precise control.
  • the limiting frequency is less than the operating frequency of the compressor when the high-pressure pressure switch is turned off.
  • the compressor In the process of controlling the operating frequency of the compressor, if the operating frequency of the compressor increases to the limit frequency, the high-pressure pressure switch is not turned off, and the compressor is controlled to run at the limited frequency to ensure that the high-pressure pressure switch is not turned off. Try to meet the needs of indoor air conditioning.
  • the operating frequency of the compressor In the process of controlling the operating frequency of the compressor to increase, if the high pressure pressure switch is opened, the operating frequency of the compressor is controlled to decrease until the high pressure switch is closed, and then the operating frequency of the compressor is controlled to increase, and the next compressor operating frequency is increased.
  • the limiting frequency in is less than the limiting frequency in the previous compressor operating frequency upscaling process to further ensure that the high-pressure pressure switch will not be disconnected.
  • the condensing temperature is the outlet temperature TC2 of the indoor heat exchanger.
  • the condensing temperature is the average value of the outlet temperatures of all indoor heat exchangers.
  • the outlet temperature TC2 of the indoor heat exchanger is obtained.
  • the operating frequency of the compressor is adjusted so that the indoor heat exchanger is The outlet temperature TC2 is maintained at the second set condensing temperature to ensure that the high-pressure pressure switch does not open.
  • the second set condensing temperature is a temperature at which the high-pressure pressure switch is determined through experiments in advance, and the second set condensing temperature is any value from 55°C to 58°C.
  • the first set condensing temperature is the temperature at which the high-pressure pressure switch will not open and is close to the operating value of the high-pressure pressure switch, which is determined in advance through experiments.
  • the first set condensing temperature is any value from 59°C to 62°C.
  • a set condensing temperature is greater than a second set condensing temperature.
  • Limiting frequency the operating frequency of the compressor when the high-pressure pressure switch is off-the second setting amplitude (10Hz).
  • the operating frequency of the compressor is controlled to decrease in a stepwise manner.
  • the compressor operating frequency has the same decrease amplitude, for example, the decrease amplitude is 20 Hz, or the latter compressor operating frequency decreases less than the previous compressor operating frequency, so as to achieve more precise control.
  • the limit frequency is less than the operating frequency of the compressor when the high-pressure pressure switch is off.
  • the compressor In the process of controlling the operating frequency of the compressor, if the operating frequency of the compressor increases to the limit frequency, the high-pressure pressure switch is not turned off, and the compressor is controlled to run at the limited frequency to ensure that the high-pressure pressure switch is not turned off. Try to meet the needs of indoor air conditioning.
  • the operating frequency of the compressor In the process of controlling the operating frequency of the compressor to increase, if the high pressure pressure switch is opened, the operating frequency of the compressor is controlled to decrease until the high pressure switch is closed, and then the operating frequency of the compressor is controlled to increase, and the next compressor operating frequency is increased.
  • the limiting frequency in is less than the limiting frequency in the previous compressor operating frequency upscaling process to further ensure that the high-pressure pressure switch will not be disconnected.
  • the method for controlling the heating state of the air conditioner in this embodiment includes the following steps:
  • the air conditioner operates normally under heating conditions.
  • step S3 It is judged that TC2>the second set condensing temperature, if yes, go to step S4, otherwise, go to step S2.
  • step S6 It is judged that TC2>the first set condensing temperature, if yes, go to step S7, otherwise, go to step S4.
  • step S9 Determine that the compressor operating frequency is less than or equal to the set frequency and the high-pressure pressure switch is off. If yes, go to step S10; otherwise, go to step S8.
  • step S11 Judge whether the high-pressure pressure switch is closed, if yes, go to step S12, if not, go to step S10, and stop until the compressor operating frequency is reduced to the minimum value.
  • the condensing temperature is the temperature Te of the outdoor heat exchanger.
  • the temperature Te of the outdoor heat exchanger is obtained, and when the temperature Te of the outdoor heat exchanger is greater than the second set condensing temperature, the operating frequency of the compressor is adjusted to maintain the temperature Te of the outdoor heat exchanger Set the condensing temperature in the second to ensure that the high-pressure pressure switch does not open.
  • the second set condensing temperature is a temperature at which the high-pressure pressure switch will not be turned off, which is determined in advance through experiments, and the second set condensing temperature is any value between 55°C and 58°C.
  • the operating frequency of the compressor is adjusted to decrease to the set frequency, and the set frequency is in the range of 55-65Hz. Any value.
  • the first set condensing temperature is the temperature at which the high-pressure pressure switch will not open and is close to the operating value of the high-pressure pressure switch, which is determined in advance through experiments.
  • the first set condensing temperature is any value from 59°C to 62°C.
  • a set condensing temperature is greater than a second set condensing temperature.
  • Limiting frequency the operating frequency of the compressor when the high-pressure pressure switch is off-the second setting amplitude (10Hz).
  • the operating frequency of the compressor is controlled to decrease in a stepwise manner.
  • the compressor operating frequency has the same decrease amplitude, for example, the decrease amplitude is 20 Hz, or the latter compressor operating frequency decreases less than the previous compressor operating frequency, so as to achieve more precise control.
  • the limit frequency is less than the operating frequency of the compressor when the high-pressure pressure switch is off.
  • the compressor In the process of controlling the operating frequency of the compressor, if the operating frequency of the compressor increases to the limit frequency, the high-pressure pressure switch is not turned off, and the compressor is controlled to run at the limited frequency to ensure that the high-pressure pressure switch is not turned off. Try to meet the needs of indoor air conditioning.
  • the operating frequency of the compressor In the process of controlling the operating frequency of the compressor to increase, if the high pressure pressure switch is opened, the operating frequency of the compressor is controlled to decrease until the high pressure switch is closed, and then the operating frequency of the compressor is controlled to increase, and the next compressor operating frequency is increased.
  • the limiting frequency in is less than the limiting frequency in the previous compressor operating frequency upscaling process to further ensure that the high-pressure pressure switch will not be disconnected.
  • the method for controlling the cooling state of the air conditioner in this embodiment includes the following steps:
  • the air conditioner operates normally in the cooling state.
  • step S9 Determine that the compressor operating frequency is less than or equal to the set frequency and the high-pressure pressure switch is off. If yes, go to step S10; otherwise, go to step S8.
  • step S11 Judge whether the high-pressure pressure switch is closed, if yes, go to step S12, if not, go to step S10, and stop until the compressor operating frequency is reduced to the minimum value.
  • This embodiment also proposes a computer-readable storage medium that stores a computer program used in combination with an air conditioner, and the computer program can be executed by a processor to implement the above-mentioned method.
  • this embodiment also proposes an air conditioner, including:
  • Condensing temperature detection module used to detect the condensing temperature
  • the control module is used to obtain the compressor's operating frequency, condensing temperature and the state of the high-pressure pressure switch, and control the compressor's operating frequency according to the above-mentioned control method.
  • the operating frequency of the compressor is repeatedly adjusted so that the operating frequency of the compressor reaches a certain suitable range, ensuring the continuous operation of the air-conditioning system, and achieving continuous provision of cooling or heating effects.

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  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
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Abstract

An air conditioner and a control method therefor, and a computer-readable storage medium. The method comprises: first, controlling the operation frequency of a compressor according to a condensing temperature, so as to ensure that a high pressure switch is not switched off, and if the high pressure switch is switched off, controlling the frequency of the compressor to continuously reduce until the high pressure switch is switched on; and then controlling the operation frequency of the compressor to rise, wherein the maximum operation frequency of frequency rising of the compressor does not exceed a limited frequency, so as to ensure that the high pressure switch is not switched off.

Description

一种空调器及其控制方法和计算机可读存储介质Air conditioner and its control method and computer readable storage medium 技术领域Technical field
本发明属于空气调节技术领域，具体涉及一种空调器及其控制方法和计算机可读存储介质。The invention belongs to the technical field of air conditioning, and specifically relates to an air conditioner, a control method thereof, and a computer-readable storage medium.
背景技术Background technique
空调器的制冷循环系统中一般设置有高压压力开关，当高压压力开关处的压力高于高压压力开关的动作值时，高压压力开关就会断开，空调器停止运行，当高压压力开关处的压力低于高压压力开关的动作值时，空调器重新启动运行。因而，在空调器停止运行期间，无法向房间内提供冷量或热量，无法满足用户对空调的需求。The refrigeration cycle system of the air conditioner is generally equipped with a high-pressure pressure switch. When the pressure at the high-pressure pressure switch is higher than the action value of the high-pressure When the pressure is lower than the action value of the high-pressure pressure switch, the air conditioner restarts operation. Therefore, when the air conditioner is out of operation, it cannot provide cooling or heat to the room, and cannot meet the user's demand for the air conditioner.
本背景技术所公开的上述信息仅仅用于增加对本申请背景技术的理解，因此，其可能包括不构成本领域普通技术人员已知的现有技术。The above-mentioned information disclosed in the background art is only used to increase the understanding of the background art of the present application, and therefore, it may include the prior art that does not constitute the prior art known to those of ordinary skill in the art.
技术问题technical problem
本发明针对现有技术中存在的上述问题，提供一种空调器及其控制方法，以解决空调器由于高压压力开关处的压力高于高压压力开关的动作值而停机，无法满足用户对空调的需求的技术问题。In view of the above-mentioned problems in the prior art, the present invention provides an air conditioner and a control method thereof, so as to solve the problem that the air conditioner shuts down due to the pressure at the high pressure switch being higher than the action value of the high pressure switch, which cannot satisfy the user’s requirements for the air conditioner. Technical issues of demand.
技术解决方案Technical solutions
为达到上述技术目的，本发明采用以下技术方案实现：In order to achieve the above technical objectives, the present invention adopts the following technical solutions to achieve:
一种空调器的控制方法：A control method of an air conditioner:
获取冷凝温度，在所述冷凝温度大于第一设定冷凝温度时，调节所述压缩机运行频率至设定频率；Acquiring a condensing temperature, and when the condensing temperature is greater than a first set condensing temperature, adjusting the operating frequency of the compressor to a set frequency;
获取压缩机的运行频率，在所述压缩机运行频率小于等于设定频率且高压压力开关断开时，控制所述压缩机运行频率降频至所述高压压力开关闭合，再控制所述压缩机运行频率升频且所述压缩机升频的最大运行频率不超过限制频率。Obtain the operating frequency of the compressor, when the operating frequency of the compressor is less than or equal to the set frequency and the high-pressure pressure switch is open, control the operating frequency of the compressor to decrease until the high-pressure pressure switch is closed, and then control the compressor The operating frequency is up-frequency and the maximum operating frequency of the compressor up-frequency does not exceed the limit frequency.
如上所述的空调器的控制方法，在所述压缩机的运行频率大于设定频率时，在所述冷凝温度大于第二设定冷凝温度时，调节所述压缩机的运行频率使所述冷凝温度保持在所述第二设定冷凝温度，所述第一设定冷凝温度大于所述第二设定冷凝温度。In the control method of the air conditioner as described above, when the operating frequency of the compressor is greater than the set frequency, and when the condensing temperature is greater than the second set condensing temperature, the operating frequency of the compressor is adjusted so that the condensing The temperature is maintained at the second set condensation temperature, and the first set condensation temperature is greater than the second set condensation temperature.
如上所述的空调器的控制方法，控制所述压缩机运行频率降频至高压压力开关闭合的过程中，控制所述压缩机运行频率阶梯式下降。In the control method of the air conditioner as described above, the operating frequency of the compressor is controlled to decrease in a stepwise manner during the process of controlling the operating frequency of the compressor to be closed until the high-pressure pressure switch is closed.
如上所述的空调器的控制方法，所述压缩机运行频率的下降幅度相同，或者，后一次压缩机运行频率下降的幅度小于前一次压缩机运行频率下降的幅度。In the control method of the air conditioner as described above, the decrease in the operating frequency of the compressor is the same, or the decrease in the operating frequency of the compressor in the next time is smaller than the decrease in the operating frequency of the compressor in the previous time.
如上所述的空调器的控制方法，所述限制频率小于所述高压压力开关断开时所述压缩机的运行频率。In the control method of the air conditioner as described above, the limiting frequency is less than the operating frequency of the compressor when the high-pressure pressure switch is turned off.
如上所述的空调器的控制方法，控制所述压缩机运行频率升频的过程中，若所述压缩机运行频率升高至限制频率时，所述高压压力开关没有断开，控制所述压缩机运行在限制频率。In the control method of the air conditioner as described above, in the process of controlling the operating frequency of the compressor to increase, if the operating frequency of the compressor increases to the limit frequency, the high-pressure pressure switch is not turned off, and the compressor is controlled. The machine is running at the limited frequency.
如上所述的空调器的控制方法，控制所述压缩机运行频率升频的过程中，若所述高压压力开关断开，控制所述压缩机运行频率降频至所述高压压力开关闭合，再控制所述压缩机运行频率升频，且后一次压缩机运行频率升频过程中的限制频率小于前一次压缩机运行频率升频过程中的限制频率。   In the control method of the air conditioner as described above, in the process of controlling the operating frequency of the compressor to increase, if the high-pressure pressure switch is opened, the operating frequency of the compressor is controlled to decrease until the high-pressure pressure switch is closed, and then The operating frequency of the compressor is controlled to increase frequency, and the limiting frequency during the next compressor operating frequency upscaling process is less than the limiting frequency during the previous compressor operating frequency upscaling process. To
如上所述的空调器的控制方法，所述空调器运行制热状态时，所述冷凝温度为室内换热器的出口温度；所述空调器运行制冷状态时，所述冷凝温度为所述室外换热器的温度。In the control method of the air conditioner as described above, when the air conditioner is in the heating state, the condensation temperature is the outlet temperature of the indoor heat exchanger; when the air conditioner is in the cooling state, the condensation temperature is the outdoor The temperature of the heat exchanger.
一种计算机可读存储介质，存储与所述空调器结合使用的计算机程序，所述计算机程序可被处理器执行以实现如上述的方法。A computer-readable storage medium stores a computer program used in combination with the air conditioner, and the computer program can be executed by a processor to implement the above-mentioned method.
一种空调器，包括：An air conditioner, including:
冷凝温度检测模块，用于检测冷凝温度；Condensing temperature detection module, used to detect the condensing temperature;
控制模块，用于获取压缩机的运行频率、冷凝温度和高压压力开关的状态，并按照上述的控制方法控制所述压缩机的运行频率。The control module is used to obtain the compressor's operating frequency, condensing temperature and the state of the high-pressure pressure switch, and control the compressor's operating frequency according to the above-mentioned control method.
有益效果Beneficial effect
与现有技术相比，本发明的优点和积极效果是：本发明空调器的控制方法首先根据冷凝温度控制压缩机的运行频率，保证高压压力开关不断开，进一步的，若高压压力开关断开时，控制压缩机频率继续降低直至高压压力开关闭合，然后再控制压缩机运行频率升频且压缩机升频的最大运行频率不超过限制频率，以保证高压压力开关不断开。因而，本发明通过调节压缩机的运行频率，高压压力开关断开时，控制压缩机继续运行但是运行频率降低，待高压压力开关闭合时，再执行升频控制，对压缩机的运行频率进行反复调节，以使压缩机的运行频率达到某一合适的范围，保障空调系统持续运行，实现持续提供制冷或制热效果。Compared with the prior art, the advantages and positive effects of the present invention are: the control method of the air conditioner of the present invention first controls the operating frequency of the compressor according to the condensing temperature to ensure that the high-pressure pressure switch is not turned off, and further, if the high-pressure pressure switch is turned off Control the compressor frequency to continue to decrease until the high-pressure pressure switch is closed, and then control the compressor operating frequency to increase and the maximum operating frequency of the compressor does not exceed the limit frequency to ensure that the high-pressure pressure switch does not open. Therefore, the present invention adjusts the operating frequency of the compressor. When the high-pressure pressure switch is turned off, the compressor is controlled to continue to run but the operating frequency is reduced. When the high-pressure pressure switch is closed, the frequency-up control is performed to repeat the operating frequency of the compressor. Adjust so that the operating frequency of the compressor reaches a certain range, to ensure the continuous operation of the air-conditioning system, and to achieve continuous provision of cooling or heating effects.
结合附图阅读本发明的具体实施方式后，本发明的其他特点和优点将变得更加清楚。After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become clearer.
附图说明Description of the drawings
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly describe the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative work, other drawings can be obtained from these drawings.
图1为本发明具体实施例空调制冷系统示意图。Fig. 1 is a schematic diagram of an air-conditioning refrigeration system according to a specific embodiment of the present invention.
图2为本发明具体实施例制热状态时空调器的控制方法的流程图。Fig. 2 is a flowchart of a control method of an air conditioner in a heating state according to a specific embodiment of the present invention.
图3为本发明具体实施例制冷状态时空调器的控制方法的流程图。Fig. 3 is a flowchart of a control method of an air conditioner in a cooling state according to a specific embodiment of the present invention.
图4为本发明具体实施例空调器的原理框图。Fig. 4 is a functional block diagram of an air conditioner according to a specific embodiment of the present invention.
本发明的最佳实施方式The best mode of the present invention
下面参照附图来描述本发明的优选实施方式。本领域技术人员应当理解的是，这些实施方式仅仅用于解释本发明的技术原理，并非旨在限制本发明的保护范围。The preferred embodiments of the present invention will be described below with reference to the drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention, and are not intended to limit the protection scope of the present invention.
需要说明的是，在本发明的描述中，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方向或位置关系的术语是基于附图所示的方向或位置关系，这仅仅是为了便于描述，而不是指示或暗示所述装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The term of the indicated direction or positional relationship is based on the direction or positional relationship shown in the drawings, which is only for ease of description, and does not indicate or imply that the device or element must have a specific orientation, be configured and operated in a specific orientation Therefore, it cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance.
此外，还需要说明的是，在本发明的描述中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域技术人员而言，可根据具体情况理解上述术语在本发明中的具体含义。In addition, it should be noted that, in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, they can be fixed or fixed. It is a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those skilled in the art, the specific meaning of the above-mentioned terms in the present invention can be understood according to specific circumstances.
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述。In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention.
本实施例空调器的控制方法首先根据冷凝温度控制压缩机的运行频率，保证高压压力开关处的压力不高于高压压力开关的动作值，进一步的，若高压压力开关处的压力仍然升高至高压压力开关断开时，控制压缩机频率继续降低直至高压压力开关闭合，然后再控制压缩机运行频率升频且压缩机升频的最大运行频率不超过限制频率，以保证高压压力开关处的压力不高于高压压力开关的动作值；升频时，如果高压压力开关动作，控制压缩机运行频率降低，循环往复，对压缩机的运行频率进行反复调节，以使压缩机的运行频率达到某一合适的范围，保障空调系统持续运行，实现持续提供制冷或制热效果。The control method of the air conditioner of this embodiment first controls the operating frequency of the compressor according to the condensation temperature to ensure that the pressure at the high-pressure pressure switch is not higher than the action value of the high-pressure pressure switch. Further, if the pressure at the high-pressure pressure switch still rises to When the high-pressure pressure switch is off, control the compressor frequency to continue to decrease until the high-pressure pressure switch is closed, and then control the compressor to increase the operating frequency and the maximum operating frequency of the compressor does not exceed the limit frequency to ensure the pressure at the high-pressure pressure switch Not higher than the operating value of the high-pressure pressure switch; during frequency up, if the high-pressure pressure switch is activated, the operating frequency of the compressor is controlled to decrease, cyclically, and the operating frequency of the compressor is repeatedly adjusted to make the operating frequency of the compressor reach a certain The proper range can ensure the continuous operation of the air-conditioning system and realize the continuous provision of cooling or heating effects.
如图1所示，本实施例空调器制冷系统包括压缩机、四通阀、室内换热器、节流装置、室外换热器。系统中设置高压压力开关和低压压力开关，高压压力开关具有高压动作值，低压压力开关具有低压动作值，高压压力开关和低压压力开关为常闭开关，在高压压力开关处的压力大于高压动作值时，高压压力开关断开，在低压压力开关处的压力低于低压动作值时，低压压力开关断开。As shown in Figure 1, the refrigeration system of the air conditioner of this embodiment includes a compressor, a four-way valve, an indoor heat exchanger, a throttling device, and an outdoor heat exchanger. The system is equipped with a high-pressure pressure switch and a low-pressure pressure switch. The high-pressure pressure switch has a high-pressure action value, the low-pressure pressure switch has a low-pressure action value, the high-pressure pressure switch and the low-pressure pressure switch are normally closed switches, and the pressure at the high-pressure pressure switch is greater than the high-pressure action value. When the high-pressure pressure switch is turned off, when the pressure at the low-pressure pressure switch is lower than the low-pressure action value, the low-pressure pressure switch is turned off.
为了能够保证空调器的持续运行，本实施例将高压压力开关的动作作为压缩机控制的参数之一，具体的，本实施例空调器的控制方法如下：In order to ensure the continuous operation of the air conditioner, this embodiment takes the action of the high-pressure pressure switch as one of the parameters of the compressor control. Specifically, the control method of the air conditioner in this embodiment is as follows:
空调器运行时，获取冷凝温度，在冷凝温度大于第二设定冷凝温度时，调节压缩机的运行频率使冷凝温度保持在第二设定冷凝温度，以保证高压压力开关不断开。其中，第二设定冷凝温度为事先通过实验确定的高压压力开关不会断开的温度。如果冷凝温度继续升高，则在冷凝温度大于第一设定冷凝温度时，调节压缩机运行频率降低至设定频率。其中，第一设定冷凝温度为事先通过实验确定的高压压力开关不会断开且接近高压压力开关的动作值的温度，第一设定冷凝温度大于第二设定冷凝温度。When the air conditioner is running, the condensing temperature is obtained, and when the condensing temperature is greater than the second set condensing temperature, the operating frequency of the compressor is adjusted to maintain the condensing temperature at the second set condensing temperature to ensure that the high-pressure pressure switch is not turned off. Among them, the second set condensing temperature is a temperature at which the high-pressure pressure switch will not be turned off, which is determined through experiments in advance. If the condensing temperature continues to rise, when the condensing temperature is greater than the first set condensing temperature, the operating frequency of the compressor is adjusted to decrease to the set frequency. Wherein, the first set condensing temperature is a temperature at which the high-pressure pressure switch will not be turned off and is close to the action value of the high-pressure pressure switch, and the first set condensing temperature is greater than the second set condensing temperature.
获取压缩机的运行频率，在压缩机运行频率小于等于设定频率且高压压力开关处的压力继续升高至高压压力开关断开时，控制压缩机运行频率降频至高压压力开关闭合，再控制压缩机运行频率升频且压缩机升频的最大运行频率不超过限制频率。Obtain the operating frequency of the compressor. When the operating frequency of the compressor is less than or equal to the set frequency and the pressure at the high pressure switch continues to increase until the high pressure switch is off, control the compressor operating frequency to decrease until the high pressure switch is closed, and then control The compressor operating frequency is increased and the maximum operating frequency of the compressor does not exceed the limit frequency.
具体的，控制压缩机运行频率降频至高压压力开关闭合的过程中，控制压缩机运行频率阶梯式下降。Specifically, in the process of controlling the operating frequency of the compressor to decrease to the closing of the high-pressure pressure switch, the operating frequency of the compressor is controlled to decrease in a stepwise manner.
其中，压缩机运行频率的下降幅度相同，或者，后一次压缩机运行频率下降的幅度小于前一次压缩机运行频率下降的幅度，以达到更加精确的控制。Among them, the reduction range of the compressor operating frequency is the same, or the reduction range of the next compressor operating frequency is smaller than the reduction range of the previous compressor operating frequency, so as to achieve more precise control.
限制频率小于所述高压压力开关断开时压缩机的运行频率。The limiting frequency is less than the operating frequency of the compressor when the high-pressure pressure switch is turned off.
控制压缩机运行频率升频的过程中，若压缩机运行频率升高至限制频率时，高压压力开关没有断开，控制压缩机运行在限制频率，以在保证高压压力开关没有断开的情况下尽量满足室内空调需求。In the process of controlling the operating frequency of the compressor, if the operating frequency of the compressor increases to the limit frequency, the high-pressure pressure switch is not turned off, and the compressor is controlled to run at the limited frequency to ensure that the high-pressure pressure switch is not turned off. Try to meet the needs of indoor air conditioning.
控制压缩机运行频率升频的过程中，若高压压力开关断开，控制压缩机运行频率降频至高压压力开关闭合，再控制压缩机运行频率升频，且后一次压缩机运行频率升频过程中的限制频率小于前一次压缩机运行频率升频过程中的限制频率，以进一步保证高压压力开关不会断开。   In the process of controlling the operating frequency of the compressor to increase, if the high pressure pressure switch is opened, the operating frequency of the compressor is controlled to decrease until the high pressure switch is closed, and then the operating frequency of the compressor is controlled to increase, and the next compressor operating frequency is increased. The limiting frequency in is less than the limiting frequency in the previous compressor operating frequency upscaling process to further ensure that the high-pressure pressure switch will not be disconnected. To
空调器运行制热状态时，冷凝温度为室内换热器的出口温度TC2。空调器为包括多个室内换热器时，冷凝温度为所有室内换热器的出口温度的平均值。When the air conditioner is running and heating, the condensing temperature is the outlet temperature TC2 of the indoor heat exchanger. When the air conditioner includes a plurality of indoor heat exchangers, the condensing temperature is the average value of the outlet temperatures of all indoor heat exchangers.
具体的，空调器制热运行时，获取室内换热器的出口温度TC2，在室内换热器的出口温度TC2大于第二设定冷凝温度时，调节压缩机的运行频率使室内换热器的出口温度TC2保持在第二设定冷凝温度，以保证高压压力开关不断开。其中，第二设定冷凝温度为事先通过实验确定的高压压力开关不会断开的温度，第二设定冷凝温度为55℃-58℃中的任意值。如果室内换热器的出口温度TC2继续升高，则在室内换热器的出口温度TC2大于第一设定冷凝温度时，调节压缩机运行频率降低至设定频率，设定频率为55-65Hz中的任意值。其中，第一设定冷凝温度为事先通过实验确定的高压压力开关不会断开且接近高压压力开关的动作值的温度，第一设定冷凝温度为59℃-62℃中的任意值，第一设定冷凝温度大于第二设定冷凝温度。Specifically, during the heating operation of the air conditioner, the outlet temperature TC2 of the indoor heat exchanger is obtained. When the outlet temperature TC2 of the indoor heat exchanger is greater than the second set condensing temperature, the operating frequency of the compressor is adjusted so that the indoor heat exchanger is The outlet temperature TC2 is maintained at the second set condensing temperature to ensure that the high-pressure pressure switch does not open. Among them, the second set condensing temperature is a temperature at which the high-pressure pressure switch is determined through experiments in advance, and the second set condensing temperature is any value from 55°C to 58°C. If the outlet temperature TC2 of the indoor heat exchanger continues to rise, when the outlet temperature TC2 of the indoor heat exchanger is greater than the first set condensing temperature, adjust the compressor operating frequency to decrease to the set frequency, the set frequency is 55-65Hz Any value in. Among them, the first set condensing temperature is the temperature at which the high-pressure pressure switch will not open and is close to the operating value of the high-pressure pressure switch, which is determined in advance through experiments. The first set condensing temperature is any value from 59°C to 62°C. A set condensing temperature is greater than a second set condensing temperature.
获取压缩机的运行频率，在压缩机运行频率小于等于设定频率且高压压力开关处的压力继续升高至高压压力开关断开时，控制压缩机运行频率降频至高压压力开关闭合，再控制压缩机运行频率升频且压缩机升频的最大运行频率不超过限制频率。限制频率=高压压力开关断开时压缩机的运行频率-第二设定幅度（10Hz）。Obtain the operating frequency of the compressor. When the operating frequency of the compressor is less than or equal to the set frequency and the pressure at the high pressure switch continues to increase until the high pressure switch is off, control the compressor operating frequency to decrease until the high pressure switch is closed, and then control The compressor operating frequency is increased and the maximum operating frequency of the compressor does not exceed the limit frequency. Limiting frequency = the operating frequency of the compressor when the high-pressure pressure switch is off-the second setting amplitude (10Hz).
具体的，控制压缩机运行频率降频至高压压力开关闭合的过程中，控制压缩机运行频率阶梯式下降。Specifically, in the process of controlling the operating frequency of the compressor to decrease to the closing of the high-pressure pressure switch, the operating frequency of the compressor is controlled to decrease in a stepwise manner.
其中，压缩机运行频率的下降幅度相同，例如，降幅为20Hz，或者，后一次压缩机运行频率下降的幅度小于前一次压缩机运行频率下降的幅度，以达到更加精确的控制。Among them, the compressor operating frequency has the same decrease amplitude, for example, the decrease amplitude is 20 Hz, or the latter compressor operating frequency decreases less than the previous compressor operating frequency, so as to achieve more precise control.
限制频率小于高压压力开关断开时压缩机的运行频率。The limit frequency is less than the operating frequency of the compressor when the high-pressure pressure switch is off.
控制压缩机运行频率升频的过程中，若压缩机运行频率升高至限制频率时，高压压力开关没有断开，控制压缩机运行在限制频率，以在保证高压压力开关没有断开的情况下尽量满足室内空调需求。In the process of controlling the operating frequency of the compressor, if the operating frequency of the compressor increases to the limit frequency, the high-pressure pressure switch is not turned off, and the compressor is controlled to run at the limited frequency to ensure that the high-pressure pressure switch is not turned off. Try to meet the needs of indoor air conditioning.
控制压缩机运行频率升频的过程中，若高压压力开关断开，控制压缩机运行频率降频至高压压力开关闭合，再控制压缩机运行频率升频，且后一次压缩机运行频率升频过程中的限制频率小于前一次压缩机运行频率升频过程中的限制频率，以进一步保证高压压力开关不会断开。In the process of controlling the operating frequency of the compressor to increase, if the high pressure pressure switch is opened, the operating frequency of the compressor is controlled to decrease until the high pressure switch is closed, and then the operating frequency of the compressor is controlled to increase, and the next compressor operating frequency is increased. The limiting frequency in is less than the limiting frequency in the previous compressor operating frequency upscaling process to further ensure that the high-pressure pressure switch will not be disconnected.
如图2所示，本实施例空调器制热状态的控制方法包括如下步骤：As shown in Figure 2, the method for controlling the heating state of the air conditioner in this embodiment includes the following steps:
S1、空调器在制热状态下正常运转。S1. The air conditioner operates normally under heating conditions.
S2、检测室内换热器的出口温度TC2。S2, detecting the outlet temperature TC2 of the indoor heat exchanger.
S3、判断TC2＞第二设定冷凝温度，若是，进入步骤S4，否则，进入步骤S2。S3. It is judged that TC2>the second set condensing temperature, if yes, go to step S4, otherwise, go to step S2.
S4、调节压缩机的运行频率使室内换热器的出口温度TC2保持在第二设定冷凝温度。S4. Adjust the operating frequency of the compressor to keep the outlet temperature TC2 of the indoor heat exchanger at the second set condensing temperature.
S5、检测室内换热器的出口温度TC2。S5. Detect the outlet temperature TC2 of the indoor heat exchanger.
S6、判断TC2＞第一设定冷凝温度，若是，进入步骤S7，否则，进入步骤S4。S6. It is judged that TC2>the first set condensing temperature, if yes, go to step S7, otherwise, go to step S4.
S7、调节压缩机运行频率降低至设定频率。S7. Adjust the operating frequency of the compressor to reduce to the set frequency.
S8、获取压缩机的运行频率。S8. Obtain the operating frequency of the compressor.
S9、判断压缩机运行频率小于等于设定频率且高压压力开关断开，若是，进入步骤S10，否则，进入步骤S8。S9. Determine that the compressor operating frequency is less than or equal to the set frequency and the high-pressure pressure switch is off. If yes, go to step S10; otherwise, go to step S8.
S10、获取压缩机的运行频率，控制压缩机运行频率降低设定幅度。S10. Obtain the operating frequency of the compressor, and control the operating frequency of the compressor to reduce the set range.
S11、判断高压压力开关是否闭合，若是，进入步骤S12，若否，进入步骤S10，直至压缩机运行频率降低至最小值停机。S11. Judge whether the high-pressure pressure switch is closed, if yes, go to step S12, if not, go to step S10, and stop until the compressor operating frequency is reduced to the minimum value.
S12、控制压缩机运行频率升频运行。升频运行时的最大运行频率不超过限制频率。S12. Control the operating frequency of the compressor to increase frequency. The maximum operating frequency during up-frequency operation does not exceed the limit frequency.
S13、判断高压压力开关是否断开，若是，进入步骤S10，否则，进入步骤S12。S13. Judge whether the high pressure switch is off, if yes, go to step S10; otherwise, go to step S12.
空调器运行制冷状态时，冷凝温度为室外换热器的温度Te。When the air conditioner is running in the cooling state, the condensing temperature is the temperature Te of the outdoor heat exchanger.
具体的，空调器制冷运行时，获取室外换热器的温度Te，在室外换热器的温度Te大于第二设定冷凝温度时，调节压缩机的运行频率使室外换热器的温度Te保持在第二设定冷凝温度，以保证高压压力开关不断开。其中，第二设定冷凝温度为事先通过实验确定的高压压力开关不会断开的温度，第二设定冷凝温度为55℃-58℃的任意值。如果室外换热器的温度Te继续升高，则在室外换热器的温度Te大于第一设定冷凝温度时，调节压缩机运行频率降低至设定频率，设定频率为55-65Hz中的任意值。其中，第一设定冷凝温度为事先通过实验确定的高压压力开关不会断开且接近高压压力开关的动作值的温度，第一设定冷凝温度为59℃-62℃中的任意值，第一设定冷凝温度大于第二设定冷凝温度。Specifically, during the cooling operation of the air conditioner, the temperature Te of the outdoor heat exchanger is obtained, and when the temperature Te of the outdoor heat exchanger is greater than the second set condensing temperature, the operating frequency of the compressor is adjusted to maintain the temperature Te of the outdoor heat exchanger Set the condensing temperature in the second to ensure that the high-pressure pressure switch does not open. Among them, the second set condensing temperature is a temperature at which the high-pressure pressure switch will not be turned off, which is determined in advance through experiments, and the second set condensing temperature is any value between 55°C and 58°C. If the temperature Te of the outdoor heat exchanger continues to rise, when the temperature Te of the outdoor heat exchanger is greater than the first set condensing temperature, the operating frequency of the compressor is adjusted to decrease to the set frequency, and the set frequency is in the range of 55-65Hz. Any value. Among them, the first set condensing temperature is the temperature at which the high-pressure pressure switch will not open and is close to the operating value of the high-pressure pressure switch, which is determined in advance through experiments. The first set condensing temperature is any value from 59°C to 62°C. A set condensing temperature is greater than a second set condensing temperature.
获取压缩机的运行频率，在压缩机运行频率小于等于设定频率且高压压力开关处的压力继续升高至高压压力开关断开时，控制压缩机运行频率降频至高压压力开关闭合，再控制压缩机运行频率升频且压缩机升频的最大运行频率不超过限制频率。限制频率=高压压力开关断开时压缩机的运行频率-第二设定幅度（10Hz）。Obtain the operating frequency of the compressor. When the operating frequency of the compressor is less than or equal to the set frequency and the pressure at the high pressure switch continues to increase until the high pressure switch is off, control the compressor operating frequency to decrease until the high pressure switch is closed, and then control The compressor operating frequency is increased and the maximum operating frequency of the compressor does not exceed the limit frequency. Limiting frequency = the operating frequency of the compressor when the high-pressure pressure switch is off-the second setting amplitude (10Hz).
具体的，控制压缩机运行频率降频至高压压力开关闭合的过程中，控制压缩机运行频率阶梯式下降。Specifically, in the process of controlling the operating frequency of the compressor to decrease to the closing of the high-pressure pressure switch, the operating frequency of the compressor is controlled to decrease in a stepwise manner.
其中，压缩机运行频率的下降幅度相同，例如，降幅为20Hz，或者，后一次压缩机运行频率下降的幅度小于前一次压缩机运行频率下降的幅度，以达到更加精确的控制。Among them, the compressor operating frequency has the same decrease amplitude, for example, the decrease amplitude is 20 Hz, or the latter compressor operating frequency decreases less than the previous compressor operating frequency, so as to achieve more precise control.
限制频率小于高压压力开关断开时压缩机的运行频率。The limit frequency is less than the operating frequency of the compressor when the high-pressure pressure switch is off.
控制压缩机运行频率升频的过程中，若压缩机运行频率升高至限制频率时，高压压力开关没有断开，控制压缩机运行在限制频率，以在保证高压压力开关没有断开的情况下尽量满足室内空调需求。In the process of controlling the operating frequency of the compressor, if the operating frequency of the compressor increases to the limit frequency, the high-pressure pressure switch is not turned off, and the compressor is controlled to run at the limited frequency to ensure that the high-pressure pressure switch is not turned off. Try to meet the needs of indoor air conditioning.
控制压缩机运行频率升频的过程中，若高压压力开关断开，控制压缩机运行频率降频至高压压力开关闭合，再控制压缩机运行频率升频，且后一次压缩机运行频率升频过程中的限制频率小于前一次压缩机运行频率升频过程中的限制频率，以进一步保证高压压力开关不会断开。In the process of controlling the operating frequency of the compressor to increase, if the high pressure pressure switch is opened, the operating frequency of the compressor is controlled to decrease until the high pressure switch is closed, and then the operating frequency of the compressor is controlled to increase, and the next compressor operating frequency is increased. The limiting frequency in is less than the limiting frequency in the previous compressor operating frequency upscaling process to further ensure that the high-pressure pressure switch will not be disconnected.
如图3所示，本实施例空调器制冷状态的控制方法包括如下步骤：As shown in FIG. 3, the method for controlling the cooling state of the air conditioner in this embodiment includes the following steps:
S1、空调器在制冷状态下正常运转。S1. The air conditioner operates normally in the cooling state.
S2、检测室外换热器的温度Te。S2. Detect the temperature Te of the outdoor heat exchanger.
S3、判断Te＞第二设定冷凝温度，若是，进入步骤S4，否则，进入步骤S2。S3. It is judged that Te>the second set condensing temperature, if yes, go to step S4, otherwise, go to step S2.
S4、调节压缩机的运行频率使室外换热器的温度Te保持在第二设定冷凝温度。S4. Adjust the operating frequency of the compressor to keep the temperature Te of the outdoor heat exchanger at the second set condensing temperature.
S5、检测室外换热器的温度Te。S5. Detect the temperature Te of the outdoor heat exchanger.
S6、判断Te＞第一设定冷凝温度，若是，进入步骤S7，否则，进入步骤S4。S6. It is judged that Te>the first set condensing temperature, if yes, go to step S7, otherwise, go to step S4.
S7、调节压缩机运行频率降低至设定频率。S7. Adjust the operating frequency of the compressor to reduce to the set frequency.
S8、获取压缩机的运行频率。S8. Obtain the operating frequency of the compressor.
S9、判断压缩机运行频率小于等于设定频率且高压压力开关断开，若是，进入步骤S10，否则，进入步骤S8。S9. Determine that the compressor operating frequency is less than or equal to the set frequency and the high-pressure pressure switch is off. If yes, go to step S10; otherwise, go to step S8.
S10、获取压缩机的运行频率，控制压缩机运行频率降低设定幅度。S10. Obtain the operating frequency of the compressor, and control the operating frequency of the compressor to reduce the set range.
S11、判断高压压力开关是否闭合，若是，进入步骤S12，若否，进入步骤S10，直至压缩机运行频率降低至最小值停机。S11. Judge whether the high-pressure pressure switch is closed, if yes, go to step S12, if not, go to step S10, and stop until the compressor operating frequency is reduced to the minimum value.
S12、控制压缩机运行频率升频运行。升频运行时的最大运行频率不超过限制频率。S12. Control the operating frequency of the compressor to increase frequency. The maximum operating frequency during up-frequency operation does not exceed the limit frequency.
S13、判断高压压力开关是否断开，若是，进入步骤S10，否则，进入步骤S12。S13. Judge whether the high pressure switch is off, if yes, go to step S10; otherwise, go to step S12.
本实施例还提出了一种计算机可读存储介质，存储与空调器结合使用的计算机程序，计算机程序可被处理器执行以实现上述的方法。This embodiment also proposes a computer-readable storage medium that stores a computer program used in combination with an air conditioner, and the computer program can be executed by a processor to implement the above-mentioned method.
如图4所示，本实施例还提出了一种空调器，包括：As shown in Figure 4, this embodiment also proposes an air conditioner, including:
冷凝温度检测模块，用于检测冷凝温度；Condensing temperature detection module, used to detect the condensing temperature;
控制模块，用于获取压缩机的运行频率、冷凝温度和高压压力开关的状态，并按照上述的控制方法控制所述压缩机的运行频率。The control module is used to obtain the compressor's operating frequency, condensing temperature and the state of the high-pressure pressure switch, and control the compressor's operating frequency according to the above-mentioned control method.
本实施例通过调节压缩机的运行频率，对压缩机的运行频率进行反复调节，以使压缩机的运行频率达到某一合适的范围，保障空调系统持续运行，实现持续提供制冷或制热效果。In this embodiment, by adjusting the operating frequency of the compressor, the operating frequency of the compressor is repeatedly adjusted so that the operating frequency of the compressor reaches a certain suitable range, ensuring the continuous operation of the air-conditioning system, and achieving continuous provision of cooling or heating effects.
以上实施例仅用以说明本发明的技术方案，而非对其进行限制；尽管参照前述实施例对本发明进行了详细的说明，对于本领域的普通技术人员来说，依然可以对前述实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或替换，并不使相应技术方案的本质脱离本发明所要求保护的技术方案的精神和范围。The above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, for those of ordinary skill in the art, the technical solutions of the foregoing embodiments can still be described. The recorded technical solutions are modified, or some of the technical features are equivalently replaced; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed by the present invention.

Claims (10)

  1. 一种空调器的控制方法，其特征在于，所述方法包括：A control method of an air conditioner, characterized in that the method includes:
    获取冷凝温度，在所述冷凝温度大于第一设定冷凝温度时，调节所述压缩机运行频率至设定频率；Acquiring a condensing temperature, and when the condensing temperature is greater than a first set condensing temperature, adjusting the operating frequency of the compressor to a set frequency;
    获取压缩机的运行频率，在所述压缩机运行频率小于等于设定频率且高压压力开关断开时，控制所述压缩机运行频率降频至所述高压压力开关闭合，再控制所述压缩机运行频率升频且所述压缩机升频的最大运行频率不超过限制频率。Obtain the operating frequency of the compressor, when the operating frequency of the compressor is less than or equal to the set frequency and the high-pressure pressure switch is open, control the operating frequency of the compressor to decrease until the high-pressure pressure switch is closed, and then control the compressor The operating frequency is up-frequency and the maximum operating frequency of the compressor up-frequency does not exceed the limit frequency.
  2. 根据权利要求1所述的空调器的控制方法，其特征在于，在所述压缩机的运行频率大于设定频率时，在所述冷凝温度大于第二设定冷凝温度时，调节所述压缩机的运行频率使所述冷凝温度保持在所述第二设定冷凝温度，所述第一设定冷凝温度大于所述第二设定冷凝温度。The air conditioner control method according to claim 1, wherein when the operating frequency of the compressor is greater than a set frequency, when the condensation temperature is greater than a second set condensation temperature, the compressor is adjusted The operating frequency of is such that the condensing temperature is maintained at the second set condensing temperature, and the first set condensing temperature is greater than the second set condensing temperature.
  3. 根据权利要求1所述的空调器的控制方法，其特征在于，控制所述压缩机运行频率降频至高压压力开关闭合的过程中，控制所述压缩机运行频率阶梯式下降。The control method of an air conditioner according to claim 1, wherein the compressor is controlled to step down in a stepwise manner during the process of controlling the operating frequency of the compressor to decrease until the high-pressure pressure switch is closed.
  4. 根据权利要求3所述的空调器的控制方法，其特征在于，所述压缩机运行频率的下降幅度相同，或者，后一次压缩机运行频率下降的幅度小于前一次压缩机运行频率下降的幅度。The control method of the air conditioner according to claim 3, wherein the reduction range of the operating frequency of the compressor is the same, or the reduction range of the operating frequency of the compressor in the next time is smaller than the reduction range of the operating frequency of the compressor in the previous time.
  5. 根据权利要求1所述的空调器的控制方法，其特征在于，所述限制频率小于所述高压压力开关断开时所述压缩机的运行频率。The control method of an air conditioner according to claim 1, wherein the limit frequency is less than the operating frequency of the compressor when the high-pressure pressure switch is turned off.
  6. 根据权利要求1所述的空调器的控制方法，其特征在于，控制所述压缩机运行频率升频的过程中，若所述压缩机运行频率升高至限制频率时，所述高压压力开关没有断开，控制所述压缩机运行在限制频率。The control method of an air conditioner according to claim 1, wherein in the process of controlling the operating frequency of the compressor to increase, if the operating frequency of the compressor increases to a limit frequency, the high-pressure pressure switch does not Disconnect, control the compressor to run at the limited frequency.
  7. 根据权利要求1所述的空调器的控制方法，其特征在于，控制所述压缩机运行频率升频的过程中，若所述高压压力开关断开，控制所述压缩机运行频率降频至所述高压压力开关闭合，再控制所述压缩机运行频率升频，且后一次压缩机运行频率升频过程中的限制频率小于前一次压缩机运行频率升频过程中的限制频率。The control method of the air conditioner according to claim 1, wherein in the process of controlling the operating frequency of the compressor to increase, if the high-pressure pressure switch is turned off, the operating frequency of the compressor is controlled to decrease to the desired value. The high-pressure pressure switch is closed, and then the compressor operating frequency is controlled to increase, and the limiting frequency during the next compressor operating frequency upscaling process is less than the limiting frequency during the previous compressor operating frequency upscaling process.
  8. 根据权利要求1-7任意一项所述的空调器的控制方法，其特征在于，所述空调器运行制热状态时，所述冷凝温度为室内换热器的出口温度；所述空调器运行制冷状态时，所述冷凝温度为所述室外换热器的温度。The control method of an air conditioner according to any one of claims 1-7, wherein when the air conditioner is running in a heating state, the condensation temperature is the outlet temperature of the indoor heat exchanger; the air conditioner is running In the cooling state, the condensation temperature is the temperature of the outdoor heat exchanger.
  9. 一种计算机可读存储介质，存储与所述空调器结合使用的计算机程序，其特征在于，所述计算机程序可被处理器执行以实现如权利要求1-8任意一项所述的方法。A computer-readable storage medium storing a computer program used in combination with the air conditioner, wherein the computer program can be executed by a processor to implement the method according to any one of claims 1-8.
  10. 一种空调器，其特征在于，所述空调器包括：An air conditioner, characterized in that the air conditioner comprises:
    冷凝温度检测模块，用于检测冷凝温度；Condensing temperature detection module, used to detect the condensing temperature;
    控制模块，用于获取压缩机的运行频率、冷凝温度和高压压力开关的状态，并按照权利要求1-8任意一项所述的控制方法控制所述压缩机的运行频率。The control module is used to obtain the compressor operating frequency, condensing temperature, and the state of the high pressure pressure switch, and control the compressor operating frequency according to the control method of any one of claims 1-8.
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