JPH01167559A - Air conditioner - Google Patents

Air conditioner

Info

Publication number
JPH01167559A
JPH01167559A JP62324062A JP32406287A JPH01167559A JP H01167559 A JPH01167559 A JP H01167559A JP 62324062 A JP62324062 A JP 62324062A JP 32406287 A JP32406287 A JP 32406287A JP H01167559 A JPH01167559 A JP H01167559A
Authority
JP
Japan
Prior art keywords
valves
pulse
opening
refrigerant
fully closed
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
JP62324062A
Other languages
Japanese (ja)
Inventor
Nobumasa Hamaide
Tomio Yoshikawa
Takeshi Hiyoshi
Osamu Seki
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP62324062A priority Critical patent/JPH01167559A/en
Publication of JPH01167559A publication Critical patent/JPH01167559A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To drive an electrically driving expansion valve with smaller power when opening the electrically driving expansion valve by setting the electrically driving expansion valve at prescribed opening in which refrigerant is not leaked from a fully closed lock point.
CONSTITUTION: Since electrically driving expansion valves 4a, 4b are fully closed and pulse number is increased more than P2 in the time of pulse number P2 of a pulse motor 11, the opening of the valves 4a, 4b are enlarged gradually and the flow of the refrigerant is increased. Further, when the fully closed lock point of the valves 4a, 4b is made 0 and the valves 4a, 4b are opened therefrom, valve opening point lag is produced up to the pulse number P2. This is caused by screw friction of a screw part of a rod 17 for supporting a needle 13 and thermal deformation of the screw part caused by refrigerant of high temperature and high pressure. Thus, whenever the valves 4a, 4b are opened, unnecessary drive power is needed for some pulse and a time lag is produced. The valves 4a, 4b are set at prescribed opening in which the refrigerant is not leaked from the fully closed lock point 0, namely, set at pulse number P1 (P1<P2). Therefore, the startup of the valves 4a, 4b can be made rapid.
COPYRIGHT: (C)1989,JPO&Japio
JP62324062A 1987-12-23 1987-12-23 Air conditioner Pending JPH01167559A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62324062A JPH01167559A (en) 1987-12-23 1987-12-23 Air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62324062A JPH01167559A (en) 1987-12-23 1987-12-23 Air conditioner

Publications (1)

Publication Number Publication Date
JPH01167559A true JPH01167559A (en) 1989-07-03

Family

ID=18161727

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62324062A Pending JPH01167559A (en) 1987-12-23 1987-12-23 Air conditioner

Country Status (1)

Country Link
JP (1) JPH01167559A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01225863A (en) * 1988-03-03 1989-09-08 Mitsubishi Electric Corp Opening degree control system for electric expansion valve of pulse motor driving system
JPH0989387A (en) * 1995-09-29 1997-04-04 Toshiba Corp Air conditioner
JP2014228224A (en) * 2013-05-24 2014-12-08 日立アプライアンス株式会社 Air conditioner

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59158968A (en) * 1983-03-02 1984-09-08 Hitachi Ltd Flow controller for refrigerant
JPS60139982A (en) * 1983-12-28 1985-07-24 Toshiba Corp Control method of full opening position in electric motor driven expansion valve device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59158968A (en) * 1983-03-02 1984-09-08 Hitachi Ltd Flow controller for refrigerant
JPS60139982A (en) * 1983-12-28 1985-07-24 Toshiba Corp Control method of full opening position in electric motor driven expansion valve device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01225863A (en) * 1988-03-03 1989-09-08 Mitsubishi Electric Corp Opening degree control system for electric expansion valve of pulse motor driving system
JPH0989387A (en) * 1995-09-29 1997-04-04 Toshiba Corp Air conditioner
JP2014228224A (en) * 2013-05-24 2014-12-08 日立アプライアンス株式会社 Air conditioner

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