JPS6410060A - Method of controlling opening of pulse motor drive system motor type expansion valve - Google Patents

Method of controlling opening of pulse motor drive system motor type expansion valve

Info

Publication number
JPS6410060A
JPS6410060A JP62164360A JP16436087A JPS6410060A JP S6410060 A JPS6410060 A JP S6410060A JP 62164360 A JP62164360 A JP 62164360A JP 16436087 A JP16436087 A JP 16436087A JP S6410060 A JPS6410060 A JP S6410060A
Authority
JP
Japan
Prior art keywords
compressor
expansion valve
valve
opened
motor expansion
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.)
Granted
Application number
JP62164360A
Other languages
Japanese (ja)
Other versions
JP2567860B2 (en
Inventor
Mitsunori Kurachi
Setsu Nakamura
Yoshinobu Igarashi
Shuichi Tani
Hideaki Tagashira
Koki Masui
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP62164360A priority Critical patent/JP2567860B2/en
Publication of JPS6410060A publication Critical patent/JPS6410060A/en
Application granted granted Critical
Publication of JP2567860B2 publication Critical patent/JP2567860B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F25B41/345—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by solenoids
    • F25B41/347—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by solenoids with the valve member being opened and closed cyclically, e.g. with pulse width modulation
    • 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
    • F25B2500/26—Problems to be solved characterised by the startup of the refrigeration cycle
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrically Driven Valve-Operating Means (AREA)

Abstract

PURPOSE: To operate a motor expansion valve surely at the time of restart by applying a maximum opening pulse signal before refrigerant begins to flow through a valve to the motor expansion valve during stoppage of a compressor and sustaining that state thereby sustaining a high pressure in liquid refrigerant piping during stoppage of the compressor. CONSTITUTION: During operation of a compressor 3, opening of a motor expansion valve 6 for controlling the flow rate of refrigerant is controlled to make constant heating of evaporator outlet depending on the operational conditions and SV1 is closed while SV2 is opened. When the compressor 3 is stopped, the motor expansion valve 6 makes a quick transition to closing operation and the opening thereof is sustained at a maximum opening before refrigerant begins to flow through the valve immediately before full closure and the solenoid valve SV2 is closed sustaining a high pressure in liquid refrigerant piping. The solenoid valve SV1 is opened and the pressure is balanced on the delivery and suction sides of the compressor thus stabilizing restart. After the compressor is restarted, the motor expansion valve is opened quickly up to a required opening by a valve open pulse from a controller and the SV1 is closed while the SV2 is opened thus stabilizing the refrigeration cycle quickly.
JP62164360A 1987-06-30 1987-06-30 Opening control method for electric expansion valve of pulse motor drive type Expired - Lifetime JP2567860B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62164360A JP2567860B2 (en) 1987-06-30 1987-06-30 Opening control method for electric expansion valve of pulse motor drive type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62164360A JP2567860B2 (en) 1987-06-30 1987-06-30 Opening control method for electric expansion valve of pulse motor drive type

Publications (2)

Publication Number Publication Date
JPS6410060A true JPS6410060A (en) 1989-01-13
JP2567860B2 JP2567860B2 (en) 1996-12-25

Family

ID=15791668

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62164360A Expired - Lifetime JP2567860B2 (en) 1987-06-30 1987-06-30 Opening control method for electric expansion valve of pulse motor drive type

Country Status (1)

Country Link
JP (1) JP2567860B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010048534A (en) * 2008-08-25 2010-03-04 Hitachi Appliances Inc Air conditioner
CN106678414A (en) * 2017-01-18 2017-05-17 苏州优冷机电科技有限公司 Electronic expansion valve opening pulse setting device
CN107356006A (en) * 2017-07-31 2017-11-17 广东美芝制冷设备有限公司 A kind of air-conditioning system and air conditioner
US9909786B2 (en) 2010-03-08 2018-03-06 Carrier Corporation Refrigerant distribution apparatus and methods for transport refrigeration system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020133927A (en) * 2019-02-13 2020-08-31 サンデン・オートモーティブクライメイトシステム株式会社 Vehicle air conditioner

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59183255A (en) * 1983-03-31 1984-10-18 シャープ株式会社 Air conditioner
JPS6240475U (en) * 1985-08-30 1987-03-11

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59183255A (en) * 1983-03-31 1984-10-18 シャープ株式会社 Air conditioner
JPS6240475U (en) * 1985-08-30 1987-03-11

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010048534A (en) * 2008-08-25 2010-03-04 Hitachi Appliances Inc Air conditioner
US9909786B2 (en) 2010-03-08 2018-03-06 Carrier Corporation Refrigerant distribution apparatus and methods for transport refrigeration system
CN106678414A (en) * 2017-01-18 2017-05-17 苏州优冷机电科技有限公司 Electronic expansion valve opening pulse setting device
CN106678414B (en) * 2017-01-18 2018-08-28 苏州优冷机电科技有限公司 A kind of electric expansion valve valve opening pulse settings device
CN107356006A (en) * 2017-07-31 2017-11-17 广东美芝制冷设备有限公司 A kind of air-conditioning system and air conditioner
CN107356006B (en) * 2017-07-31 2022-11-25 广东美芝制冷设备有限公司 Air conditioning system and air conditioner

Also Published As

Publication number Publication date
JP2567860B2 (en) 1996-12-25

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