US20200191430A1 - Method and device for controlling expansion valve - Google Patents

Method and device for controlling expansion valve Download PDF

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Publication number
US20200191430A1
US20200191430A1 US16/780,420 US202016780420A US2020191430A1 US 20200191430 A1 US20200191430 A1 US 20200191430A1 US 202016780420 A US202016780420 A US 202016780420A US 2020191430 A1 US2020191430 A1 US 2020191430A1
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US
United States
Prior art keywords
indoor units
working state
expansion valves
specified number
valves corresponding
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.)
Abandoned
Application number
US16/780,420
Other languages
English (en)
Inventor
Jun Wang
Shaojiang Cheng
Baitian Zhuo
Ruigang Zhang
Wenjun Shao
Wanying Zhang
Bin Shi
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
Original Assignee
Qingdao Haier Air Conditioning Electric 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 filed Critical Qingdao Haier Air Conditioning Electric Co Ltd
Assigned to QINGDAO HAIER AIR-CONDITIONING ELECTRONIC CO., LTD reassignment QINGDAO HAIER AIR-CONDITIONING ELECTRONIC CO., LTD ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHENG, Shaojiang, SHAO, Wenjun, SHI, BIN, WANG, JUN, ZHANG, RUIGANG, ZHANG, Wanying, ZHUO, Baitian
Publication of US20200191430A1 publication Critical patent/US20200191430A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
    • F25B2313/0233—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements
    • F25B2313/02334—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements during heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/12—Sound
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/025—Compressor control by controlling speed
    • F25B2600/0253—Compressor control by controlling speed with variable speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2513—Expansion valves
    • 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 present disclosure relates to the field of terminal technologies, and more particularly, to a method and a device for controlling an expansion valve.
  • an indoor unit is a unit that a user can directly experience, and cooling and heating effects and noise level thereof directly affect user experience.
  • an indoor unit heat exchanger serves as a condenser
  • an outdoor unit heat exchanger serves as an evaporator
  • a high-temperature and high-pressure gaseous refrigerant output by a compressor is condensed into a high-pressure normal-temperature liquid refrigerant in the indoor unit heat exchanger, then enters an outdoor unit through an electronic expansion valve, evaporates into a low-temperature gaseous refrigerant at the outdoor unit heat exchanger after throttling and depressurizing, and is compressed into a high-temperature and high-pressure gaseous refrigerant through the compressor to complete a cycle of a refrigeration system.
  • the indoor unit When the indoor unit operates in the heating mode, since the influence of environment temperatures and various other conditions, the high-temperature gaseous refrigerant may not be sufficiently condensed at the indoor unit heat exchanger, and flows through the electronic expansion valve of the indoor unit in a gas-liquid two-phase state at an outlet of the indoor unit heat exchanger. Therefore, if the indoor unit operates in the heating mode, since the refrigerant passing through the electronic expansion valve of the indoor unit may be in the gas-liquid two-phase state or even a liquid state, when the indoor unit is shut down, a large noise may be generated while the refrigerant flows through the electronic expansion valve of the indoor unit, which will seriously affect the user experience.
  • embodiments of the present disclosure provide a method and a device for controlling an expansion valve, which can reduce refrigerant noise to a certain extent.
  • the embodiments of the present disclosure provide a method for controlling an expansion valve, including:
  • the embodiments of the present disclosure provide a device for controlling an expansion valve, including:
  • a memory for storing instructions executable by the processor
  • processor is configured to:
  • the embodiments of the present disclosure provide non-transitory computer-readable storage medium including instructions that, when executed by a processor of a device for controlling an expansion valve, cause the device to perform a method including:
  • FIG. 1 is a flowchart illustrating a method for controlling an expansion valve according to an embodiment of the present disclosure
  • FIG. 2 is a flowchart illustrating a method for controlling an expansion valve according to another embodiment of the present disclosure
  • FIG. 3 is a flowchart illustrating a method for controlling an expansion valve according to another embodiment of the present disclosure
  • FIG. 4 is a flowchart illustrating a method for controlling an expansion valve according to another embodiment of the present disclosure
  • FIG. 5 is a block diagram illustrating a device for controlling an expansion valve according to an embodiment of the present disclosure
  • FIG. 6 is a block diagram illustrating a device for controlling an expansion valve according to another embodiment of the present disclosure.
  • FIG. 7 is block diagram illustrating a device for controlling an expansion valve according to another embodiment of the present disclosure.
  • the embodiment of the present disclosure provides a method for controlling an expansion valve, which aims to solve a mute problem when indoor units in a multi-split system are in a non-working state.
  • the method flow shown in FIG. 1 includes the following steps.
  • expansion valves corresponding to all the indoor units in the non-working state are turned off.
  • the non-working state may include a shutdown state or a standby state.
  • the function of turning off the expansion valves is to stop the flow of refrigerant between the indoor unit and the outdoor unit. After the refrigerant stops flowing, the noise generated by the refrigerant hitting the expansion valve will no longer be generated.
  • the first specified number is used to indicate the number of the indoor units in the non-working state in the multi-split system, which is generally determined by actual conditions.
  • expansion valves corresponding to a second specified number of indoor units in the non-working state are turned on in turn according to a predetermined cycle.
  • the second specified number is not greater than the first specified number, so as to ensure that a normal operation of the indoor units in the working state will not be affected. Since the expansion valves are turned on in turn, the second specified number should not be too much, because the excessive start will cause the refrigerant noise again.
  • the second specified number can generally be set to one or not more than a certain percentage that does not exceed the total number of the indoor units.
  • the expansion valves corresponding to a certain number of the indoor units in the non-working state need to be turned on in turn according to the predetermined cycle to relieve the pressure in the pipeline.
  • the predetermined cycle can be set according to actual needs or empirical values, such as 1 minute, 5 minutes, 10 minutes, and the like.
  • the method for controlling the expansion valve provided by the embodiment of the present disclosure, by turning on the expansion valves of part of all the indoor units in the non-working state in turn, and simultaneously turning off the expansion valves of remaining indoor units, it is ensured that only a small amount of noise can be generated in the indoor units in the non-working state.
  • the method used in the embodiment of the present disclosure only allows part of the indoor units to generate the noise, and thus the interference caused by the noise can be effectively reduced.
  • the embodiment of the present disclosure further provides the following step 103 , as shown in FIG. 2 , including:
  • a working frequency of a compressor of an outdoor unit is adjusted according to the number of indoor units in the non-working state.
  • the adjustment method of the working frequency of the compressor of the outdoor unit is as follows:
  • X is a target working frequency
  • X 1 is a normal working frequency of the outdoor unit, and is generally configured at 20 Hz to 120 Hz
  • N is the number of indoor units in the non-working state, and can be collected uniformly by a controller or a manager in the multi-split system
  • A is an adjustment coefficient, and can be correspondingly set according to the refrigerant pressure when different numbers of the indoor units work, and the embodiment of the present disclosure does not limit the specific size, as long as the target working frequency is adjusted to between 20 Hz and 100 Hz.
  • the working frequency of the compressor of the outdoor unit can be reduced according to the number of the indoor units in the non-working state, thereby preventing excessive refrigerant from being conducted in the pipeline where the outdoor unit performs refrigerant interaction with the indoor units in the normal working state.
  • step 102 can be specifically executed as the following step D 102 , including:
  • the expansion valves corresponding to the second specified number of indoor units in the non-working state are turned on in turn according to the predetermined cycle to a specified threshold.
  • the specified threshold generally needs to be set to be smaller than an opening degree during the normal operation to achieve the effect of reducing refrigerant throughput and noise, for example, 60 pls.
  • the specified threshold can be set to be larger than the opening degree during the normal operation according to actual needs to balance the pipeline pressure as soon as possible.
  • the embodiment of the present disclosure Before performing the above-mentioned step 101 , the embodiment of the present disclosure also needs to determine the number of the indoor units currently running, to determine whether noise control is suitable in a current environment.
  • the specific process is shown in FIG. 4 , including:
  • step 101 is performed. Otherwise, step 105 is performed.
  • the third specified number generally does not exceed 3% to 5% of the total number of units in the multi-split system.
  • 3% to 5% is 1 to 2 units.
  • the embodiment of the present disclosure does not limit the condition that the third specified number exceeds the number of the indoor units currently in the working state, and the foregoing process is still performed.
  • the embodiment of the present disclosure provides a device for controlling an expansion valve, which can perform the method flows described above. As shown in FIG. 5 , the device includes:
  • a turning off unit 21 configured to, when a first specified number of indoor units are in a non-working state, turn off expansion valves corresponding to all the indoor units in the non-working state;
  • a turning on unit 22 configured to turn on expansion valves corresponding to a second specified number of indoor units in the non-working state in turn according to a predetermined cycle.
  • the device further includes:
  • an adjusting unit 23 configured to obtain the number of indoor units in the non-working state; and adjust a working frequency of a compressor of an outdoor unit according to the number of indoor units in the non-working state.
  • the turning on unit 22 is specifically configured to turn on the expansion valves corresponding to the second specified number of indoor units in the non-working state in turn according to the predetermined cycle to a specified threshold.
  • the device further includes:
  • a determining unit 24 configured to determine whether the number of indoor units currently in a working state exceeds a third specified number
  • the turning off unit 21 is configured to, when it is determined that the number of indoor units currently in the working state does not exceed the third specified number, turn off the expansion valves corresponding to all the indoor units in the non-working state.
  • the device for controlling the expansion valve provided by the embodiment of the present disclosure, by turning on the expansion valves of part of all the indoor units in the non-working state in turn, and simultaneously turning off the expansion valves of remaining indoor units, it is ensured that only a small amount of noise can be generated in the indoor units in the non-working state.
  • the method used in the embodiment of the present disclosure only allows part of the indoor units to generate the noise, and thus the interference caused by the noise can be effectively reduced.
  • the disclosed apparatus and method can be implemented in other manners.
  • the described apparatus embodiments are merely exemplary.
  • the division of the units is merely a division of logical functions and there can be other division manners during actual implementations.
  • a plurality of units or components can be combined or integrated into another system, or some features can be omitted or not performed.
  • the mutual coupling or direct coupling or a communication connection shown or discussed can be indirect coupling or a communication connection via some interfaces, devices or units, and can be electrical, mechanical or in other forms.
  • the units described as separate parts may be or may not be physically separated, the parts shown as units may be or may not be physical units, i.e., they can be located in one place, or distributed in a plurality of network units. One can select some or all the units to achieve the purpose of the embodiment according to the actual needs.
  • functional units can be integrated in one processing unit, or they can be separate physical presences; or two or more units can be integrated in one unit.
  • the integrated unit described above can be implemented in the form of hardware, or they can be implemented with hardware plus software functional units.
  • the aforementioned integrated unit in the form of software function units may be stored in a computer readable storage medium.
  • the aforementioned software function units are stored in a storage medium, including several instructions to instruct a computer device (a personal computer, server, or network equipment, etc.) or processor to perform some steps of the method described in the various embodiments of the present disclosure.
  • the aforementioned storage medium includes various media that may store program codes, such as U disk, removable hard disk, Read-Only Memory (ROM), a Random Access Memory (RAM), magnetic disk, or an optical disk.
US16/780,420 2017-08-02 2020-02-03 Method and device for controlling expansion valve Abandoned US20200191430A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN201710650431.6A CN107560214A (zh) 2017-08-02 2017-08-02 一种膨胀阀的控制方法及装置
CN201710650431.6 2017-08-02
PCT/CN2018/096155 WO2019024683A1 (zh) 2017-08-02 2018-07-18 一种膨胀阀的控制方法及装置

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EP (1) EP3647680B1 (zh)
CN (1) CN107560214A (zh)
WO (1) WO2019024683A1 (zh)

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CN107560214A (zh) * 2017-08-02 2018-01-09 青岛海尔空调电子有限公司 一种膨胀阀的控制方法及装置
CN110081554B (zh) * 2019-05-07 2020-12-25 珠海格力电器股份有限公司 多联机空调系统的控制方法及装置
CN110332648B (zh) * 2019-07-22 2021-12-21 宁波奥克斯电气股份有限公司 一种电子膨胀阀的控制方法、装置及多联空调系统
CN113494764A (zh) * 2020-04-08 2021-10-12 广东美的制冷设备有限公司 一拖多空调器的控制方法、一拖多空调器及存储介质

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008256260A (ja) * 2007-04-04 2008-10-23 Daikin Ind Ltd 空気調和システム及び空調管理装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04198672A (ja) * 1990-11-28 1992-07-20 Matsushita Seiko Co Ltd 多室形空気調和機の電動膨張弁制御装置
JPH11325655A (ja) * 1998-05-14 1999-11-26 Matsushita Seiko Co Ltd 消音器および空気調和機
KR100382911B1 (ko) * 1999-11-25 2003-05-09 엘지전자 주식회사 멀티형 공기조화기 및 그 운전제어방법
KR100546616B1 (ko) * 2004-01-19 2006-01-26 엘지전자 주식회사 멀티공기조화기의 제어방법
JP4797727B2 (ja) * 2006-03-22 2011-10-19 ダイキン工業株式会社 冷凍装置
CN103940023B (zh) * 2013-01-21 2018-05-25 山东朗进科技股份有限公司 一种一拖多空调膨胀阀智能控制方法
CN105588261B (zh) * 2015-01-08 2018-03-30 青岛海信日立空调系统有限公司 一种室内机电子膨胀阀的控制方法及装置
CN104697120A (zh) * 2015-03-24 2015-06-10 广东美的暖通设备有限公司 多联机系统及其的降噪控制方法
CN105066287A (zh) * 2015-07-20 2015-11-18 特灵空调系统(中国)有限公司 多联机及其控制方法
CN106907834A (zh) * 2017-03-15 2017-06-30 广东美的暖通设备有限公司 多联机系统及其制热室内机停机时的噪音控制方法和装置
CN107560214A (zh) * 2017-08-02 2018-01-09 青岛海尔空调电子有限公司 一种膨胀阀的控制方法及装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008256260A (ja) * 2007-04-04 2008-10-23 Daikin Ind Ltd 空気調和システム及び空調管理装置

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CN107560214A (zh) 2018-01-09
WO2019024683A1 (zh) 2019-02-07
EP3647680A1 (en) 2020-05-06
EP3647680B1 (en) 2023-04-19
EP3647680A4 (en) 2020-07-01

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