EP4067763A1 - Procédé et système de détermination de fréquence de démarrage de climatiseur - Google Patents

Procédé et système de détermination de fréquence de démarrage de climatiseur Download PDF

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Publication number
EP4067763A1
EP4067763A1 EP20891769.0A EP20891769A EP4067763A1 EP 4067763 A1 EP4067763 A1 EP 4067763A1 EP 20891769 A EP20891769 A EP 20891769A EP 4067763 A1 EP4067763 A1 EP 4067763A1
Authority
EP
European Patent Office
Prior art keywords
air conditioner
start frequency
determining
temperature threshold
temperature value
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20891769.0A
Other languages
German (de)
English (en)
Other versions
EP4067763A4 (fr
Inventor
Deyue SONG
Ming Zhang
Qiang Gao
Mengmeng SUN
Xiaodi Zhang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
Original Assignee
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qingdao Haier Air Conditioning Electric Co Ltd, Haier Smart Home Co Ltd filed Critical Qingdao Haier Air Conditioning Electric Co Ltd
Publication of EP4067763A1 publication Critical patent/EP4067763A1/fr
Publication of EP4067763A4 publication Critical patent/EP4067763A4/fr
Pending legal-status Critical Current

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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
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • 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
    • 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
    • F24F11/48—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring prior to normal operation, e.g. pre-heating or pre-cooling
    • 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
    • F24F11/00—Control or safety arrangements
    • F24F11/88—Electrical aspects, e.g. circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air

Definitions

  • the present disclosure relates to the technical field of air conditioning, and in particular to a method and system for determining a start frequency of an air conditioner.
  • a refrigerant coming from a compressor reaches a condenser of an outdoor unit after passing through a four-way valve; after being subjected to a throttling effect of an electronic expansion valve of the outdoor unit, the refrigerant enters an indoor side, and after being subjected to a throttling effect of an electronic expansion valve of an indoor unit, the refrigerant enters an evaporator for heat exchange, and then enters the outdoor side; the refrigerant passes through the four-way valve again being flowing into a gas-liquid separator, and finally flows back to the compressor to form a complete cooling cycle.
  • the compressor In general situations, in order to enable the refrigerant in the air conditioning system to quickly circulate to participate in the cooling or heating of the air conditioner, in a soft-start stage, the compressor is typically started according to a maximum start frequency.
  • a temperature of an outdoor environment is relatively high, especially in a T3 working condition, under which the temperature of the outdoor environment may reach up to 40-50°C, a discharge pressure of the compressor will be too high if the start frequency is relatively high due to a limited condensing effect of the condenser, which will easily cause a high pressure switch to be turned off so as to protect the air conditioner by shutting down. This will result in a problem that the air conditioning system cannot be turned on normally, thus affecting the normal use by the user.
  • the present disclosure provides a method and system for determining a start frequency of an air conditioner, so that the air conditioner can be turned on normally without failure even when the outdoor temperature is high.
  • the method for determining a start frequency of an air conditioner includes: acquiring an actual temperature value of an outdoor environment; comparing the actual temperature value with a preset first temperature threshold and a preset second temperature threshold, the first temperature threshold being lower than the second temperature threshold; and determining the start frequency of the air conditioner based on a comparison result.
  • the "determining the start frequency of the air conditioner based on a comparison result" includes: determining the start frequency of the air conditioner as a first start frequency, if the actual temperature value is smaller than or equal to the first temperature threshold.
  • the "determining the start frequency of the air conditioner based on a comparison result" includes: determining the start frequency of the air conditioner according to a preset functional relationship indicating a change of the start frequency with the actual temperature value, if the actual temperature value is between the first temperature threshold and the second temperature threshold.
  • the functional relationship is configured to characterize a general trend of a decrease of the start frequency with an increase of the actual temperature value.
  • the "determining the start frequency of the air conditioner based on a comparison result" includes: determining the start frequency of the air conditioner as 0, if the actual temperature value is larger than or equal to the second temperature threshold.
  • the present disclosure correspondingly also provides a system for determining a start frequency of an air conditioner, which includes: an acquisition module, which is configured to acquire an actual temperature value of an outdoor environment; a comparison module, which is configured to compare the actual temperature value with a preset first temperature threshold and a preset second temperature threshold, the first temperature threshold being lower than the second temperature threshold; and a determination module, which is configured to determine the start frequency of the air conditioner based on a comparison result.
  • the determination module determines the start frequency of the air conditioner based on the comparison result in the following way: if the actual temperature value is smaller than or equal to the first temperature threshold, the start frequency of the air conditioner is determined as a first start frequency.
  • the determination module determines the start frequency of the air conditioner based on the comparison result in the following way: if the actual temperature value is between the first temperature threshold and the second temperature threshold, the start frequency of the air conditioner is determined according to a preset functional relationship indicating a change of the start frequency with the actual temperature value.
  • the functional relationship is configured to characterize a general trend of a decrease of the start frequency with an increase of the actual temperature value.
  • the determination module determines the start frequency of the air conditioner based on the comparison result in the following way: if the actual temperature value is larger than or equal to the second temperature threshold, the start frequency of the air conditioner is determined as 0.
  • the acquired actual temperature value of the outdoor environment is compared with a preset first temperature threshold and a preset second temperature threshold, and the start frequency of the air conditioner is determined based on a comparison result.
  • the start frequency of the air conditioner is determined respectively, so that the air conditioner can be turned on normally without failure even when the outdoor temperature is high, which further optimizes the performance of the air conditioner and improves the user's experience in use.
  • the start frequency of the air conditioner when the actual temperature value of the outdoor environment is between the first temperature threshold and the second temperature threshold, the start frequency of the air conditioner is determined according to a preset functional relationship indicating a change of the start frequency with the actual temperature value, and the functional relationship is configured to characterize a general trend of a decrease of the start frequency with an increase of the actual temperature value. In this way, when the actual temperature value of the outdoor environment exceeds the first temperature threshold, with the increase of the actual temperature value of the outdoor environment, it can still be ensured that the air conditioner will be started quickly at a frequency as high as possible.
  • 1 compressor; 2: high pressure sensor; 3: high pressure switch; 4: four-way valve; 5: condenser; 6: outdoor electronic expansion valve; 7: indoor electronic expansion valve; 8: evaporator; 9: low pressure sensor; 10: gas-liquid separator.
  • an end d of a four-way valve is conducted with an end c of the four-way valve, and an end e of the four-way valve is conducted with an end s of the four-way valve.
  • a refrigerant coming out of a compressor 1 reaches an outdoor condenser 5 after passing through the four-way valve 4; after being subj ected to a throttling effect of an outdoor electronic expansion valve 6, the refrigerant enters an indoor side, and after being subjected to a throttling effect of an indoor electronic expansion valve 7, the refrigerant enters an evaporator 8 for heat exchange, and then enters the outdoor side; the refrigerant passes through the four-way valve 4 again being flowing into a gas-liquid separator 10, and finally flows back to the compressor 1 to form a complete cooling cycle.
  • a high pressure sensor 2 and a high pressure switch 3 are also arranged between the compressor 1 and the four-way valve, and a low pressure sensor 9 is also connected to a refrigerant inlet side of the gas-liquid separator 10.
  • the frequency of the compressor 1 in a soft-start stage is typically set relatively high, and is a fixed value (such as 40Hz).
  • a fixed value such as 40Hz.
  • a turn-off value of the high pressure switch is generally 4.15MPa, and a corresponding saturation temperature is 64.7°C.
  • a corresponding saturation temperature is 64.7°C.
  • Air conditioners for T3 climate type have a highest working environment temperature of 52°C, and they can adapt to a tropical climate; therefore, they are called tropical air conditioners.
  • Air conditioners for T2 climate type are called cold-zone air conditioners.
  • Air conditioners for T1 climate type are called temperate air conditioners.
  • the corresponding system pressure is 3.2MPa. If the start frequency of the compressor is unreasonably set at this time (for example, it is still 40Hz), then the discharge pressure 2 can easily reach 4.15MPa, which will further trigger the turn-off failure of the high pressure switch 3, so that the air conditioning system cannot be turned on normally, thus affecting the normal use by the user.
  • the present embodiment provides a method and system for determining a start frequency of an air conditioner, so that the air conditioner can be turned on normally without failure even when the outdoor temperature is high.
  • the method for determining a start frequency of an air conditioner includes:
  • a temperature sensor may be provided in the outdoor environment to detect the actual temperature value of the outdoor environment.
  • the temperature sensor may be communicatively connected to a controller of the air conditioning system, and the temperature sensor can feed the acquired actual temperature value of the outdoor environment back to the controller of the air conditioning system.
  • the controller of the air conditioning system compares the actual temperature value with the preset first temperature threshold and the preset second temperature threshold, and determines the start frequency of the air conditioner based on the comparison result.
  • the acquired actual temperature value of the outdoor environment is compared with a preset first temperature threshold and a preset second temperature threshold respectively, and the start frequency of the air conditioner is determined based on a comparison result.
  • the start frequency of the air conditioner is determined respectively, so that the air conditioner can be turned on normally without failure even when the outdoor temperature is high, which further optimizes the performance of the air conditioner and improves the user's experience in use.
  • the "determining the start frequency of the air conditioner based on a comparison result" includes: determining the start frequency of the air conditioner as a first start frequency, if the actual temperature value is smaller than or equal to the first temperature threshold.
  • the first temperature threshold is a critical value of the temperature of the outdoor environment, which has a negligible influence on the start frequency of the air conditioner; for example, it may be 35°C. Moreover, a rated value for performing cooling by the air conditioners for T1 climate type is also 35°C, and most air conditioning systems are developed from this rated value.
  • the first temperature threshold may be any value between 32°C and 38°C; the first start frequency may be the maximum start frequency of the air conditioner, such as 40Hz; when the actual temperature value of the outdoor environment is lower than or equal to the first temperature threshold, the air conditioner can be started according to the maximum start frequency value, so as to ensure that the air conditioner is started quickly at a frequency as high as possible.
  • the "determining the start frequency of the air conditioner based on a comparison result" includes: determining the start frequency of the air conditioner according to a preset functional relationship indicating a change of the start frequency with the actual temperature value, if the actual temperature value is between the first temperature threshold and the second temperature threshold.
  • the second temperature threshold may be the highest temperature value of the outdoor environment when the air conditioner operates normally.
  • the start frequency of the air conditioner is high, it is easy to cause the air conditioner to fail to adapt to the actual temperature of the outdoor environment, resulting in an overly high discharge pressure of the compressor to trigger the shutdown protection of the air conditioning system. Therefore, when the environmental temperature is high, the start frequency of the air conditioner can be appropriately reduced to ensure that the air conditioner is turned up normally. It is a convenient and practical method to determine the start frequency of the air conditioner through the preset functional relationship indicating a change of the start frequency with the actual temperature value.
  • the functional relationship is configured to characterize a general trend of a decrease of the start frequency with an increase of the actual temperature value.
  • the functional relationship can generally characterize the relationship that the start frequency decreases with the increase of the actual temperature value, and the functional relationship may be a linear relationship corresponding to a straight line A as shown in FIG. 2 , or a nonlinear relationship corresponding to a concave curve B as shown in 2, or a nonlinear relationship corresponding to a convex curve C as shown in FIG. 2 , and a nonlinear relationship corresponding to a stepped fold line D as shown in FIG. 3 .
  • Those skilled in the art can make specific settings according to differences in the performance of the compressor, the type of the refrigerant, etc. Further, when the functional relationship is the linear relationship corresponding to the straight line A as shown in FIG.
  • the first temperature threshold is 35°C
  • the second temperature threshold is 54°C
  • the maximum start frequency of the air conditioner is 40Hz
  • the lowest effective start frequency of the air conditioner is 10Hz
  • the minimum start frequency (or the lowest effective start frequency) is generally recorded in the compressor specification book, so when the start frequency of the air conditioner is determined according to the actual temperature value of the outdoor environment, it should be ensured that the start frequency of the air conditioner is not lower than the minimum start frequency so that the air conditioner can be started normally.
  • 10Hz is used as the lowest effective start frequency of the air conditioner.
  • the "determining the start frequency of the air conditioner based on a comparison result" includes: determining the start frequency of the air conditioner as 0, if the actual temperature value is larger than or equal to the second temperature threshold.
  • the second temperature threshold may be the highest temperature value of the outdoor environment when the air conditioner operates normally.
  • the highest working environment temperature is 52°C.
  • the second temperature threshold of 54°C is taken as an example.
  • the method for determining the start frequency of the air conditioner provided by the present embodiment may be stored as a program in a computer-readable storage medium.
  • the storage medium includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to execute some steps of the methods of various embodiments of the present disclosure.
  • the above storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program codes.
  • the present disclosure correspondingly also provides a system for determining a start frequency of an air conditioner, which includes: an acquisition module, which is configured to acquire an actual temperature value of an outdoor environment; a comparison module, which is configured to compare the actual temperature value with a preset first temperature threshold and a preset second temperature threshold, the first temperature threshold being lower than the second temperature threshold; and a determination module, which is configured to determine the start frequency of the air conditioner based on a comparison result.
  • the determination module determines the start frequency of the air conditioner based on the comparison result in the following way: if the actual temperature value is smaller than or equal to the first temperature threshold, the start frequency of the air conditioner is determined as a first start frequency.
  • the determination module determines the start frequency of the air conditioner based on the comparison result in the following way: if the actual temperature value is between the first temperature threshold and the second temperature threshold, the start frequency of the air conditioner is determined according to a preset functional relationship indicating a change of the start frequency with the actual temperature value.
  • the functional relationship is configured to characterize a general trend of a decrease of the start frequency with an increase of the actual temperature value.
  • the determination module determines the start frequency of the air conditioner based on the comparison result in the following way: if the actual temperature value is larger than or equal to the second temperature threshold, the start frequency of the air conditioner is determined as 0.
  • the system for determining the start frequency of the air conditioner provided by the present embodiment corresponds to the method for determining the start frequency of the air conditioner that has been described above, so the system for determining the start frequency of the air conditioner in the present embodiment will not be described repeatedly. Those skilled in the art can still clearly understand the present embodiment, and can implement it smoothly on the basis of the understanding.
  • the comparison module compares the acquired actual temperature value of the outdoor environment with a preset first temperature threshold and a preset second temperature threshold, and the determination module determines the start frequency of the air conditioner based on a comparison result of the comparison module.
  • the start frequency of the air conditioner can be determined respectively by the system for determining the start frequency of the air conditioner provided by the present embodiment, so that the air conditioner can be turned on normally without failure even when the outdoor temperature is high, which further optimizes the performance of the air conditioner and improves the user's experience in use.
  • the system for determining the start frequency of the air conditioner provided by the present embodiment is only illustrated through the division of the above functional modules (such as the acquisition module, the comparison module, the determination module, etc.).
  • the above functional modules can be completed by different functional modules as required, that is, the functional modules in the embodiments of the present disclosure can be further decomposed or combined.
  • the functional modules in the above embodiment can be combined into one functional module, or can be further split into several sub-modules, so as to complete all or part of the functions described above.
  • the names of the functional modules involved in the embodiments of the present disclosure are only provided for distinguishing, and should not regarded as improper limitations to the present disclosure.
  • Various embodiments of the present disclosure may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. It should be understood by those skilled in the art that a microprocessor or a digital signal processor (DSP) may be used in practice to implement some or all the functions of some or all of the components in the server and client according to the embodiments of the present disclosure.
  • DSP digital signal processor
  • the present disclosure may also be implemented as a device or apparatus program (e.g., a PC program and a PC program product) for executing a part or entirety of the method described herein.
  • Such a program for implementing the present disclosure may be stored on a PC-readable medium, or may be in the form of one or more signals. Such signals may be downloaded from Internet websites, or provided on carrier signals, or provided in any other form.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Thermal Sciences (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Air Conditioning Control Device (AREA)
EP20891769.0A 2019-11-26 2020-07-07 Procédé et système de détermination de fréquence de démarrage de climatiseur Pending EP4067763A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201911176017.1A CN112944509A (zh) 2019-11-26 2019-11-26 空调的启动频率的确定方法及***
PCT/CN2020/100513 WO2021103542A1 (fr) 2019-11-26 2020-07-07 Procédé et système de détermination de fréquence de démarrage de climatiseur

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EP4067763A1 true EP4067763A1 (fr) 2022-10-05
EP4067763A4 EP4067763A4 (fr) 2023-08-02

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CN115930408A (zh) * 2022-11-21 2023-04-07 珠海格力电器股份有限公司 冷水机组的制冷控制方法、装置、冷水机组和存储介质

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KR100548299B1 (ko) * 2004-04-14 2006-02-02 엘지전자 주식회사 실내외 온도 판단에 따른 인버터 압축기의 운전 제어 방법
KR100766177B1 (ko) * 2006-08-04 2007-10-10 주식회사 대우일렉트로닉스 공기 조화기의 운전 제어 방법
JP6350485B2 (ja) * 2015-10-30 2018-07-04 ダイキン工業株式会社 空気調和機
CN106440587A (zh) * 2016-09-29 2017-02-22 海信（广东）空调有限公司 一种空调器制冷控制方法及空调器
CN106642579B (zh) * 2016-12-26 2020-10-09 广东美的制冷设备有限公司 一种适于空调器压缩机的启动频率调节方法及装置
CN108278742B (zh) * 2017-01-04 2019-12-24 奥克斯空调股份有限公司 一种空调频率的控制方法
CN106871334B (zh) * 2017-01-05 2020-01-03 珠海格力电器股份有限公司 基于模糊控制的空调控制方法及装置
CN108534320B (zh) * 2018-03-29 2021-03-19 广东美的制冷设备有限公司 空调器制冷启动控制方法、空调器及存储介质
CN110332682B (zh) * 2019-07-25 2021-05-14 宁波奥克斯电气股份有限公司 对压缩机的工作频率调节的方法、装置及空调器

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EP4067763A4 (fr) 2023-08-02
CN112944509A (zh) 2021-06-11

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