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
Links
- 238000012544 monitoring process Methods 0.000 claims description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Magnetically Actuated Valves (AREA)
Description
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)
、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.
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) |
-
1988
- 1988-02-15 JP JP1901388U patent/JPH01123166U/ja active Pending
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