WO2018094844A1 - Système de climatisation et procédé de commande - Google Patents

Système de climatisation et procédé de commande Download PDF

Info

Publication number
WO2018094844A1
WO2018094844A1 PCT/CN2016/113673 CN2016113673W WO2018094844A1 WO 2018094844 A1 WO2018094844 A1 WO 2018094844A1 CN 2016113673 W CN2016113673 W CN 2016113673W WO 2018094844 A1 WO2018094844 A1 WO 2018094844A1
Authority
WO
WIPO (PCT)
Prior art keywords
air conditioning
conditioning system
pressure
heat exchanger
electronic expansion
Prior art date
Application number
PCT/CN2016/113673
Other languages
English (en)
Chinese (zh)
Inventor
杨晓东
韦汉儒
李杏党
Original Assignee
广州华凌制冷设备有限公司
美的集团股份有限公司
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 广州华凌制冷设备有限公司, 美的集团股份有限公司 filed Critical 广州华凌制冷设备有限公司
Publication of WO2018094844A1 publication Critical patent/WO2018094844A1/fr

Links

Images

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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
    • 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
    • F24F11/89—Arrangement or mounting of control or safety devices
    • 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
    • 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
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/006—Accumulators
    • 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 relates to the technical field of air conditioners, in particular to an air conditioning system for high temperature refrigeration and a control method thereof.
  • the air conditioning system usually adopts unloading to reduce the system load during high temperature cooling, and the refrigerant required for cooling of the air conditioning system gradually decreases as the outdoor side temperature increases, and the existing air conditioning system refrigerant cannot follow The change in the outdoor temperature changes, resulting in excessive system load due to excessive refrigerant at high outdoor temperatures, which affects the reliability of the unit.
  • the technical problem to be solved by the present invention is that the refrigerant of the air conditioning system cannot change with the change of the outdoor temperature when the air conditioner is cooled at a high temperature.
  • the present invention provides an air conditioning system including a main pipe including a compressor connected to a refrigeration circuit or a heating circuit, an outdoor heat exchanger, a first throttle assembly, and a room heat exchange
  • the air conditioning system further includes an auxiliary pipeline serially connected in series by an electronic expansion valve, a liquid storage tank, a check valve and a second throttle component, wherein the auxiliary pipeline is connected in parallel to the outdoor heat exchanger of the main pipeline a line between the outlet and the inlet of the indoor heat exchanger.
  • the compressor is connected to the outdoor heat exchanger and the indoor heat exchanger through a four-way valve Pick up.
  • a pressure sensor is arranged in the main line of the air conditioning system for monitoring the pressure of the air conditioning system.
  • the air conditioning system is provided with a controller, and the controller is respectively connected with the pressure sensor and the electronic expansion valve for controlling the opening degree of the electronic expansion valve according to the signal of the pressure sensor.
  • the outlet pipe of the liquid storage tank is disposed at the bottom of the liquid storage tank.
  • the compressor suction port is provided with a returning member for preventing backflow of gas sucked into the compressor.
  • the invention also provides a control method for the above air conditioning system, comprising the following steps:
  • the air conditioning system pressure P d is monitored, and it is determined whether the air conditioning system pressure P d is greater than the system first preset pressure P ds1 ,
  • the controller controls the electronic expansion valve to be closed, the air conditioning system operates according to the current state and continuously monitors the system pressure;
  • the controller controls the electronic expansion valve to open at a preset opening degree, the refrigerant enters the liquid storage tank, and then outputs through the liquid storage tank output tube, and flows through the one-way The valve and the second throttling assembly enter the indoor heat exchanger and continuously monitor system pressure.
  • the controller controls the electronic expansion valve to maintain the current opening degree, the air conditioning system operates according to the current state and continuously monitors the system pressure;
  • the controller controls the electronic expansion valve to increase the opening degree at a preset speed and continuously monitors the system pressure.
  • the liquid storage tank can adjust the stored or output refrigerant amount according to the change of the air conditioning system pressure.
  • the air conditioning system and the control method thereof provided by the invention have the beneficial effects that when the air conditioning system performs high temperature cooling, the air conditioning system can be controlled to store the refrigerant at a high temperature, and the system refrigerant flow rate and pressure are performed according to the opening degree of the electronic expansion valve. Continuous control, realized empty The system adjusts the refrigerant at high temperature, and the refrigerant re-enters the system cycle at low temperature. The system runs stably, reduces the system operation load, is environmentally friendly, and improves the user experience.
  • FIG. 1 is a schematic structural view of an air conditioning system of the present invention
  • FIG. 2 is a flow chart of a method for controlling an air conditioning system of the present invention
  • the air conditioning system of the present invention comprises a compressor connected to a circuit, a four-way valve 2, an outdoor heat exchanger 4, a first throttle assembly 5 and an indoor heat exchanger 10, said air conditioning system
  • the utility model further includes an auxiliary pipeline serially connected in series by the electronic expansion valve 6, the liquid storage tank 7, the check valve 8 and the second throttle assembly 9, and the auxiliary pipeline is connected in parallel to the outlet of the outdoor heat exchanger 4 in the main pipeline.
  • the controller is respectively connected to the temperature sensor 41 and the electronic expansion valve 8 for controlling the opening degree of the electronic expansion valve 6 according to the signal of the temperature sensor, and the outlet pipe of the liquid storage tank 7 is disposed in the liquid storage tank The bottom of 7.
  • the control method of the air conditioning system of the present invention is as shown in FIG. 2, and includes the following steps:
  • the air conditioning system pressure P d is monitored, and it is determined whether the air conditioning system pressure P d is greater than the system first preset pressure P ds1 ,
  • the controller controls the electronic expansion valve 6 to be closed, the air conditioning system operates according to the current state and continuously monitors the system pressure;
  • the controller controls the electronic expansion valve 6 to open at a preset opening degree, the refrigerant enters the liquid storage tank, and then flows through the output tube of the liquid storage tank 7 and flows through The check valve 8 and the second throttle assembly 0 enter the indoor heat exchanger and continuously monitor the system pressure.
  • the controller controls the electronic expansion valve 6 to maintain the current opening degree, the air conditioning system operates according to the current state and continuously monitors the system pressure;
  • the controller controls the electronic expansion valve 6 to increase the opening degree at a preset speed and continuously monitors the system pressure.
  • the controller controls the opening of the electronic expansion valve 6 to control the entry of the refrigerant in the liquid storage tank according to the system pressure P d being compared with the system first preset pressure P ds1 and the second preset pressure P ds2 , respectively. Output.
  • the liquid storage tank can adjust the stored or output refrigerant amount according to the change of the air conditioning system pressure.
  • the refrigerant circulation process is: the refrigerant is compressed by the compressor 1, flows through the four-way valve 2, enters the outdoor heat exchanger 4 for heat exchange, and is converted into a medium temperature high pressure.
  • the refrigerant then enters the indoor heat exchanger 10 through the first throttling assembly 5 for heat exchange, and the heat exchanged refrigerant re-injects into the compressor to compress.
  • the controller controls the electronic expansion valve 6 to open at a preset opening degree, and the refrigerant flows through the electronic expansion valve 6 into the liquid storage tank 7 (where the liquid storage tank inlet pipe can not be deeply stored in the liquid storage tank)
  • the liquid storage tank outlet pipe needs to be connected to the bottom of the liquid storage tank body so that the refrigerant can be output in time), and then the refrigerant enters the indoor heat exchanger after being throttled by the single valve 8 and the second throttle assembly 9 10 heat exchange, re-flow into the compressor after heat exchange 1 compression.
  • the controller controls the electronic expansion valve 6 to increase the opening degree at a preset speed to allow more refrigerant to enter the liquid storage In tank 7.
  • the controller controls the electronic expansion valve 6 to be closed, and the refrigerant stored in the liquid storage tank is returned to the system through the second throttle assembly for cooling, and continues to monitor the air conditioning system. Pressure, such loop control.
  • the predetermined time may be a factory setting of the air conditioning system, or may be customized by the user. Accordingly, when the air conditioning system is running a cooling mode, the air conditioning system is turned on monitoring pressure P d after a predetermined time, and judges as compared to the first preset pressure and a second predetermined system pressure, the controller controls the electronic expansion valve 6 The opening is used to control the entry and output of refrigerant in the reservoir.
  • the predetermined time may range from 0 s to 60 s.
  • the predetermined time may be 40 s. By setting a predetermined time of 40 s, the rate of change when the room temperature starts to change may be avoided.
  • the air conditioner adjusts the indoor temperature relatively gently, thereby improving the user's comfort to a certain extent.
  • the air conditioning system and the control method thereof provided by the invention can control the air conditioning system to store the refrigerant at a high temperature when performing high temperature cooling, and continuously control the flow rate and pressure of the system refrigerant according to the opening degree of the electronic expansion valve, thereby realizing the air conditioner.
  • the system stores the refrigerant at high temperature, and the refrigerant re-enters the system cycle at low temperature, the system runs stably, reduces the system operation load, is environmentally friendly, and improves the user experience.
  • the air conditioning system and the control method according to the present invention can control the air conditioning system to store the refrigerant at a high temperature when the air conditioning system performs high temperature cooling, and continuously control the system refrigerant flow rate and pressure according to the opening degree of the electronic expansion valve.
  • the air conditioning system stores the refrigerant at high temperatures, and the refrigerant re-enters the system at low temperatures.
  • the air conditioning system and the control method provided by the present invention increase an electronic expansion valve, a liquid storage tank, a check valve and a second throttle
  • the auxiliary pipelines in series are connected in series, and then the refrigerant flow rate and pressure of the air conditioning system are continuously controlled to achieve the storage of the refrigerant in the air conditioning system at a high temperature, and the refrigerant re-enters the system circulation at a low temperature, the system runs stably, and the system operation load is reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

L'invention concerne un système de climatisation comprenant une canalisation principale. La canalisation principale comprend un compresseur (1), une soupape à quatre voies (2), un échangeur de chaleur extérieur (4), un premier composant d'étranglement (5), et un échangeur de chaleur intérieur (10) qui sont reliés de manière à former une boucle. Le système de climatisation comprend en outre une canalisation secondaire formée par connexion séquentielle et en série d'un détendeur électronique (6), d'un réservoir de stockage de liquide (7), d'une soupape unidirectionnelle (8), et d'un second composant d'étranglement (9). La canalisation secondaire est connectée en parallèle à une canalisation entre une sortie de l'échangeur de chaleur extérieur (4) et une entrée de l'échangeur de chaleur intérieur (10) dans la canalisation principale. Un capteur de pression (3) est en outre disposé dans la canalisation principale du système de climatisation et utilisé pour surveiller la pression du système de climatisation. L'invention concerne en outre un procédé de commande pour un système de climatisation. Un fluide frigorigène stocké à une température élevée entre dans le système avec une basse température pour la circulation. Le système fonctionne de manière stable et sa charge de fonctionnement est réduite.
PCT/CN2016/113673 2016-11-25 2016-12-30 Système de climatisation et procédé de commande WO2018094844A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201611075648.0A CN106403413A (zh) 2016-11-25 2016-11-25 一种空调系统及控制方法
CN201611075648.0 2016-11-25

Publications (1)

Publication Number Publication Date
WO2018094844A1 true WO2018094844A1 (fr) 2018-05-31

Family

ID=58084477

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/113673 WO2018094844A1 (fr) 2016-11-25 2016-12-30 Système de climatisation et procédé de commande

Country Status (2)

Country Link
CN (1) CN106403413A (fr)
WO (1) WO2018094844A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109458744A (zh) * 2018-12-12 2019-03-12 宁波奥克斯电气股份有限公司 空调制冷系统与压缩机防液击方法
CN112665226A (zh) * 2020-12-15 2021-04-16 珠海格力电器股份有限公司 一种空调系统及其控制方法
CN113787883A (zh) * 2021-09-07 2021-12-14 安徽江淮汽车集团股份有限公司 一种空调系统及车辆
CN115371308A (zh) * 2022-08-18 2022-11-22 南京天加环境科技有限公司 一种防回液空调系统及控制方法

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107869864A (zh) * 2017-06-09 2018-04-03 南京平日制冷科技有限公司 一种降压除霜系统
CN107449078A (zh) * 2017-07-26 2017-12-08 美的集团武汉制冷设备有限公司 空调系统、空调系统的控制装置和方法
CN108019890B (zh) * 2017-12-05 2020-09-04 珠海格力电器股份有限公司 空调能效控制方法、装置及空调系统
CN109612019A (zh) * 2018-11-28 2019-04-12 宁波奥克斯电气股份有限公司 一种户式中央空调机组控制方法及系统
CN111895671A (zh) * 2019-05-05 2020-11-06 维谛技术有限公司 一种空调系统
CN110542235B (zh) * 2019-09-12 2021-03-02 广东美的制冷设备有限公司 空调器及其控制方法、控制装置和计算机可读存储介质
CN111043723A (zh) * 2019-12-30 2020-04-21 Tcl空调器(中山)有限公司 一种空调器及其控制方法
CN112413860A (zh) * 2020-11-12 2021-02-26 珠海格力电器股份有限公司 机房空调系统控制方法及系统

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001108317A (ja) * 1999-10-05 2001-04-20 Daikin Ind Ltd 二酸化炭素冷媒を使用したヒートポンプ式の冷暖房型空気調和機
CN103307818A (zh) * 2013-06-25 2013-09-18 Tcl空调器(中山)有限公司 空调系统及空调系统防液击的控制方法
CN103913005A (zh) * 2013-01-09 2014-07-09 美的集团股份有限公司 制冷系统及其控制方法和具该制冷系统的空调
CN104676944A (zh) * 2013-11-28 2015-06-03 合肥美的暖通设备有限公司 空调系统及其冷媒调节方法
CN104949297A (zh) * 2014-03-27 2015-09-30 珠海格力电器股份有限公司 空调机组及其压力控制方法
CN104990320A (zh) * 2015-07-16 2015-10-21 广东美的暖通设备有限公司 一种冷媒自动充注的控制方法及系统

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH116661A (ja) * 1997-06-16 1999-01-12 Mitsubishi Heavy Ind Ltd 空気調和機
JP2000274838A (ja) * 1999-03-25 2000-10-06 Tgk Co Ltd バイパス管路付冷凍サイクル
CN1287121C (zh) * 2004-04-05 2006-11-29 广东科龙电器股份有限公司 可实现冷媒充灌量动态控制的空调器节流装置
CN102261773A (zh) * 2010-05-24 2011-11-30 上海日立电器有限公司 一种热泵热水器系统
CN203561105U (zh) * 2013-10-25 2014-04-23 珠海铨高机电设备有限公司 双机制冷系统
CN105987537B (zh) * 2015-02-05 2018-11-06 佛山市禾才科技服务有限公司 一种多联机空调系统及其变负荷的控制方法
CN105444448B (zh) * 2015-12-23 2018-02-06 广东美的暖通设备有限公司 制冷系统及其控制方法
CN105588376B (zh) * 2016-02-23 2023-11-24 珠海格力电器股份有限公司 制冷系统及其控制方法、冷藏运输车
CN106482379A (zh) * 2016-10-25 2017-03-08 重庆美的通用制冷设备有限公司 空调及其制冷系统
CN206291547U (zh) * 2016-11-25 2017-06-30 广州华凌制冷设备有限公司 一种空调系统
CN106403348B (zh) * 2016-11-28 2022-07-01 广州华凌制冷设备有限公司 一种空调器及其制冷控制方法
CN110542235B (zh) * 2019-09-12 2021-03-02 广东美的制冷设备有限公司 空调器及其控制方法、控制装置和计算机可读存储介质

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001108317A (ja) * 1999-10-05 2001-04-20 Daikin Ind Ltd 二酸化炭素冷媒を使用したヒートポンプ式の冷暖房型空気調和機
CN103913005A (zh) * 2013-01-09 2014-07-09 美的集团股份有限公司 制冷系统及其控制方法和具该制冷系统的空调
CN103307818A (zh) * 2013-06-25 2013-09-18 Tcl空调器(中山)有限公司 空调系统及空调系统防液击的控制方法
CN104676944A (zh) * 2013-11-28 2015-06-03 合肥美的暖通设备有限公司 空调系统及其冷媒调节方法
CN104949297A (zh) * 2014-03-27 2015-09-30 珠海格力电器股份有限公司 空调机组及其压力控制方法
CN104990320A (zh) * 2015-07-16 2015-10-21 广东美的暖通设备有限公司 一种冷媒自动充注的控制方法及系统

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109458744A (zh) * 2018-12-12 2019-03-12 宁波奥克斯电气股份有限公司 空调制冷系统与压缩机防液击方法
CN112665226A (zh) * 2020-12-15 2021-04-16 珠海格力电器股份有限公司 一种空调系统及其控制方法
CN112665226B (zh) * 2020-12-15 2024-04-12 珠海格力电器股份有限公司 一种空调系统及其控制方法
CN113787883A (zh) * 2021-09-07 2021-12-14 安徽江淮汽车集团股份有限公司 一种空调系统及车辆
CN115371308A (zh) * 2022-08-18 2022-11-22 南京天加环境科技有限公司 一种防回液空调系统及控制方法
CN115371308B (zh) * 2022-08-18 2023-12-19 南京天加环境科技有限公司 一种防回液空调系统及控制方法

Also Published As

Publication number Publication date
CN106403413A (zh) 2017-02-15

Similar Documents

Publication Publication Date Title
WO2018094844A1 (fr) Système de climatisation et procédé de commande
CN108375175B (zh) 空调系统控制方法及装置
CN110671777B (zh) 一种空调器的控制方法、装置和空调器
CN110715466A (zh) 一种多联式空调系统及其控制方法
CN105371545A (zh) 空调器及其制冷系统的制冷剂循环量调节方法
CN203823880U (zh) 流量控制装置及流体回路系统
CN109556210B (zh) 一种低温型三联供热泵系统的控制方法
CN110285598B (zh) 喷气增焓空调系统、方法及喷气增焓空调及可读存储介质
CN107990579B (zh) 制冷系统、具有该制冷系统的冰箱及其控制方法
CN206291547U (zh) 一种空调系统
WO2015158109A1 (fr) Climatiseur multi-blocs a recuperation de chaleur et son procede de commande
CN107894045B (zh) 空调系统的节流控制方法、装置与空调器
CN104006445A (zh) 多联式空调器及其控制方法
JP2014029222A (ja) 空気調和機
WO2016141791A1 (fr) Système de réfrigération à énergie hybride et procédé de commande associé
CN101109592A (zh) 空调器压缩机吸气口温度紧急状态控制方法
CN110822545A (zh) 变频空调系统及其低频运行的控制方法
CN106403349B (zh) 一种双缸变容空调系统及控制方法
CN204006307U (zh) 具有卸荷功能的空调器
CN101086358A (zh) 一拖多空调器及其控制方法
CN114459133A (zh) 一种中央空调系统节能控制方法及节能控制系统
CN111928410A (zh) 用于多联机空调机组的控制方法
CN110822544A (zh) 一种提高室内舒适度的定频空调系统
CN101451781A (zh) 空调循环量控制装置及多联空调循环量控制装置
CN106931546B (zh) 一种热泵喷焓系统及其控制方法、空调器

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16922269

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16922269

Country of ref document: EP

Kind code of ref document: A1