JPH01123166U - - Google Patents

Info

Publication number
JPH01123166U
JPH01123166U JP1901388U JP1901388U JPH01123166U JP H01123166 U JPH01123166 U JP H01123166U JP 1901388 U JP1901388 U JP 1901388U JP 1901388 U JP1901388 U JP 1901388U JP H01123166 U JPH01123166 U JP H01123166U
Authority
JP
Japan
Prior art keywords
microcomputer
power
relay
electric expansion
expansion valve
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
JP1901388U
Other languages
Japanese (ja)
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 filed Critical
Priority to JP1901388U priority Critical patent/JPH01123166U/ja
Publication of JPH01123166U publication Critical patent/JPH01123166U/ja
Pending legal-status Critical Current

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Landscapes

  • Magnetically Actuated Valves (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は、本考案に係る電動膨張弁の制御装置
の回路図である。第2図、第3図は、従来の冷却
回路の系統及びその制御系統である。 1は電動膨張弁、2はマイコン、3は電源部、
4は電源スイツチ、5はリレー、6はリレー5の
接点、7はトランジスタ、8は電源監視回路、9
は電動膨張弁1のドライバ、10は従来の電動膨
張弁の制御装置、11は圧縮機、12は凝縮機、
13は蒸発器、14は電磁弁である。
FIG. 1 is a circuit diagram of a control device for an electric expansion valve according to the present invention. FIGS. 2 and 3 show a conventional cooling circuit system and its control system. 1 is an electric expansion valve, 2 is a microcomputer, 3 is a power supply section,
4 is a power switch, 5 is a relay, 6 is a contact of relay 5, 7 is a transistor, 8 is a power supply monitoring circuit, 9
is a driver for the electric expansion valve 1, 10 is a conventional electric expansion valve control device, 11 is a compressor, 12 is a condenser,
13 is an evaporator, and 14 is a solenoid valve.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 電動膨張弁1の弁開度を制御するマイコン2と
、該マイコン2からの制御信号をパルス信号に変
換するドライバ9と、マイコン2に電力を供給す
る電源部3、及び電源スイツチ4と、電源スイツ
チ4をONからOFFへ変化させた後にもマイコ
ン2へ電力を供給するためのリレー5と、当該リ
レーの接点6のON、OFFを制御するためのト
ランジスタ7と、電源スイツチ4がONからOF
Fになつたことをマイコン2に知らせるための電
源監視回路8から構成され、電源スイツチ4をO
NからOFFに変えたとき、マイコン2が電動膨
張弁1を全閉にした後マイコン2が自らリレー5
の接点6をOFFにすることによつて、マイコン
自身の電力を遮断するようにしたことを特徴とす
る電動膨張弁の制御装置。
A microcomputer 2 that controls the valve opening of the electric expansion valve 1, a driver 9 that converts a control signal from the microcomputer 2 into a pulse signal, a power supply unit 3 that supplies power to the microcomputer 2, a power switch 4, and a power supply. A relay 5 for supplying power to the microcomputer 2 even after the switch 4 is changed from ON to OFF, a transistor 7 for controlling ON and OFF of the contacts 6 of the relay, and a transistor 7 for controlling the ON and OFF of the contacts 6 of the relay,
It consists of a power supply monitoring circuit 8 that notifies the microcomputer 2 that the power has become F.
When changing from N to OFF, microcomputer 2 fully closes electric expansion valve 1, and then microcomputer 2 automatically closes relay 5.
A control device for an electric expansion valve, characterized in that power to the microcomputer itself is cut off by turning off a contact 6.
JP1901388U 1988-02-15 1988-02-15 Pending JPH01123166U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1901388U JPH01123166U (en) 1988-02-15 1988-02-15

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1901388U JPH01123166U (en) 1988-02-15 1988-02-15

Publications (1)

Publication Number Publication Date
JPH01123166U true JPH01123166U (en) 1989-08-22

Family

ID=31234159

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1901388U Pending JPH01123166U (en) 1988-02-15 1988-02-15

Country Status (1)

Country Link
JP (1) JPH01123166U (en)

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