JPS6141994Y2 - - Google Patents
Info
- Publication number
- JPS6141994Y2 JPS6141994Y2 JP1979045032U JP4503279U JPS6141994Y2 JP S6141994 Y2 JPS6141994 Y2 JP S6141994Y2 JP 1979045032 U JP1979045032 U JP 1979045032U JP 4503279 U JP4503279 U JP 4503279U JP S6141994 Y2 JPS6141994 Y2 JP S6141994Y2
- Authority
- JP
- Japan
- Prior art keywords
- relay
- contact
- auxiliary relay
- series
- normally open
- 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.)
- Expired
Links
- 238000001816 cooling Methods 0.000 description 5
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Description
【考案の詳細な説明】
本案は冷凍機の制御回路に関し、圧縮機運転停
止後所定時間は運転操作をしても再運転を不能と
し圧縮機の保護を図つたものである。[Detailed Description of the Invention] The present invention relates to a control circuit for a refrigerator, and is intended to protect the compressor by making it impossible to restart the compressor even if the compressor is operated for a predetermined period of time after the compressor has stopped operating.
本案の一実施例を以下に図面に従い説明する。
図において、R3は圧縮機用リレで、該リレの常
開リレ接点R31及び一時閉路式の運転スイツチS1
の並列回路と、後述の第１補助リレR1の常開リ
レ接点R12と、後述の第２補助リレR2の常閉リレ
接点R22及び開閉保持型の手動スイツチS2の並列
回路と直列に接続され圧縮後制御回路を構成して
いる。 An embodiment of the present invention will be described below with reference to the drawings.
In the figure, R 3 is a compressor relay, which has a normally open relay contact R 31 and a temporarily closed operation switch S 1
A parallel circuit of the normally open relay contact R 12 of the first auxiliary relay R 1 (described later), the normally closed relay contact R 22 of the second auxiliary relay R 2 (described later), and the open/close holding type manual switch S 2 . They are connected in series to form a post-compression control circuit.
又、R1は一時閉路式停止スイツチS3と直列に
接続される第１補助リレ、R2は第１補助リレR1
の常開リレ接点R11と直列に接続される第２補助
リレ、T1は第２補助リレと並列に接続される動
作限時型でモータ駆動型のタイマ、T11は第２補
助リレR2の常開リレ接点R21と直列にして第１補
助リレR1の常開リレ接点R11と並列に接続されタ
イマT1通電開始所定時間閉路するタイマ接点
で、タイマT1及びタイマ接点T11は空調機の種
類、能力等によつて高低圧の圧力均衡に要する時
間が異なるのでそれに応じて選定される。 In addition, R1 is the first auxiliary relay connected in series with the temporary closing type stop switch S3 , and R2 is the first auxiliary relay R1.
The second auxiliary relay is connected in series with the normally open relay contact R 11 of , T 1 is a limited-time-operation motor-driven timer connected in parallel with the second auxiliary relay, T 11 is the second auxiliary relay R 2 A timer contact that is connected in series with the normally open relay contact R21 of the first auxiliary relay R1 and in parallel with the normally open relay contact R11 of the first auxiliary relay R1 , and closes for a predetermined time when timer T1 is energized . The time required for pressure balance between high and low pressures varies depending on the type of air conditioner, capacity, etc., so it is selected accordingly.
CMは圧縮機用リレR3の常開リレ接点R32と直
列に接続される圧縮機用モータである。l1，l2，
L1，L2は電源母線である。 CM is a compressor motor connected in series with normally open relay contact R 32 of compressor relay R 3 . l 1 , l 2 ,
L 1 and L 2 are power busbars.
上記構成の実施例において、手動スイツチS2開
放状態で、運転スイツチS1を押圧すると、母線l1
−運転スイツチS1−常閉リレ接点R12−常閉リレ
接点R22−圧縮機用リレR3−母線l2なる回路でリ
レR3が励磁されリレ接点R31が閉じて自己保持回
路が形成され、リレ接点R32が閉じて圧縮機CM
が駆動され冷房運転が開始される。 In the embodiment with the above configuration, when the operation switch S 1 is pressed with the manual switch S 2 open , the bus line l 1
- Operation switch S 1 - Normally closed relay contact R 12 - Normally closed relay contact R 22 - Compressor relay R 3 - Relay R 3 is excited in the circuit consisting of bus line L 2 , relay contact R 31 is closed, and a self-holding circuit is activated. formed, relay contact R 32 closes compressor CM
is driven and cooling operation is started.
次いで、停止スイツチS3を押圧すると、第１補
助リレR1励磁、リレ接点R12が開くと共にリレ接
点R11が閉じ第２補助リレR2が励磁されリレ接点
R21が閉じて自己保持回路が形成されリレ接点R32
が開い圧縮機用リレCMが解磁され冷房運転が停
止される。リレレ接点R21の閉路によりタイマT1
に通電されこの通電開始から所定時間後にタイマ
接点T11が開くまで第２補助リレR2が励磁されリ
レ接点R22の開放を維持する。従つてこの間運転
スイツチを閉じても圧縮機用リレR3は励磁され
ず冷房運転を再開できず圧縮機の短時間後再運転
を防止できる。 Next, when the stop switch S3 is pressed, the first auxiliary relay R1 is energized, the relay contact R12 is opened, and the relay contact R11 is closed, and the second auxiliary relay R2 is energized and the relay contact is
R 21 closes to form a self-holding circuit and relay contact R 32
opens, the compressor relay CM is demagnetized, and cooling operation is stopped. Timer T 1 is activated by closing relay contact R 21 .
The second auxiliary relay R2 is energized and the relay contact R22 is maintained open until the timer contact T11 is opened after a predetermined time from the start of the current. Therefore, even if the operation switch is closed during this time, the compressor relay R3 is not energized and cooling operation cannot be restarted, thereby preventing the compressor from restarting after a short period of time.
タイマT1の通電開始より所定時間後にタイマ
接点T11が開くことにより、第２補助リレR2が解
磁されリレ接点R22が閉じるので、運転スイツチ
S1押圧により冷房運転再開可となる。 When the timer contact T11 opens a predetermined time after the timer T1 starts energizing, the second auxiliary relay R2 is demagnetized and the relay contact R22 closes, so the operation switch is turned on.
Cooling operation can be restarted by pressing S1 .
保守等で圧縮機停止後直ちに再運転を要する時
には手動スイツチS2を閉じることにより直ちに短
時間後の冷房運転を再開できる。 When the compressor needs to be restarted immediately after it has been stopped for maintenance, etc., the cooling operation can be resumed immediately after a short period of time by closing the manual switch S2 .
上述の如く本案は一時閉路式停止スイツチと直
列に接続される第１補助リレと、該第１補助リレ
の常開リレ接点と直列に接続される第２補助リレ
と、該第２補助リレと並列に接続される動作限時
型のタイマと、前記第２補助リレの常開リレ接点
と直列にして前記第１補助リレの常開リレ接点と
並列に接続され前記タイマ通電開始後所定時間閉
路するタイマ接点と、圧縮機制御回路中に直列接
続される前記第２補助リレの常閉リレ接点及び前
記停止スイツチと連動する常閉接点並びに自己保
持接点を有する運転スイツチとから構成したもの
であるから、高低圧圧力が均衡している初期起動
時は、運転スイツチ投入と同時に圧縮機が運転さ
れて室内が速やかに冷房される。しかも高低圧圧
力が均衡していない再起動時には圧縮機の運転停
止後短時間に圧縮機が運転されるのを防止して圧
縮機の保護をなし得ると共に、タイマ及びタイマ
接点を適宜選定することにより圧縮機停止時間が
任意に調整できる等実用的効果が大きい。 As mentioned above, the present invention includes a first auxiliary relay connected in series with the temporary closing type stop switch, a second auxiliary relay connected in series with the normally open relay contact of the first auxiliary relay, and a second auxiliary relay connected in series with the normally open relay contact of the first auxiliary relay. A limited-time-operation timer connected in parallel, connected in series with the normally open relay contact of the second auxiliary relay and in parallel with the normally open relay contact of the first auxiliary relay, and closed for a predetermined time after the timer starts energizing. This is because it is composed of a timer contact, a normally closed relay contact of the second auxiliary relay connected in series in the compressor control circuit, and an operation switch that has a normally closed contact and a self-holding contact that operate in conjunction with the stop switch. During initial startup when the high and low pressures are balanced, the compressor is operated at the same time as the operation switch is turned on, and the room is quickly cooled. Furthermore, when restarting when the high and low pressures are not balanced, the compressor can be protected by preventing the compressor from being started for a short time after the compressor has stopped operating, and the timer and timer contacts can be appropriately selected. This has great practical effects, such as being able to arbitrarily adjust the compressor stop time.
図面は本案一実施例の電気制御回路を示す図で
ある。
S3……停止スイツチ、R1，R2……第１、第２
補助リレ、R11，R21……常開リレ接点、R22……
常閉リレ接点、T1……タイマ、T11……タイマ接
点。
The drawing is a diagram showing an electric control circuit according to an embodiment of the present invention. S3 ...stop switch, R1 , R2 ...first, second
Auxiliary relay, R 11 , R 21 ... Normally open relay contact, R 22 ...
Normally closed relay contact, T 1 ... timer, T 11 ... timer contact.
Claims (1)
と、該第１補助リレの常開リレ接点と直列に接続
される第２補助リレと、該第２補助リレと並列に
接続される動作限時型のタイマと、前記第２補助
リレの常開リレ接点と直列にして前記第１補助リ
レの常開リレ接点と並列に接続され前記タイマ通
電開始後所定時間閉路するタイマ接点と、圧縮機
制御回路中に直列接続される前記第２補助リレの
常開リレ接点及び前記停止スイツチと連動する常
閉接点並びに自己保持接点を有する運転スイツチ
とよりなる冷凍機の制御回路。 A first auxiliary relay connected in series with the stop switch, a second auxiliary relay connected in series with the normally open relay contact of the first auxiliary relay, and a time-limited operation type connected in parallel with the second auxiliary relay. a timer contact connected in series with the normally open relay contact of the second auxiliary relay and in parallel with the normally open relay contact of the first auxiliary relay and closed for a predetermined period of time after the timer starts energizing; and a compressor control circuit. A control circuit for a refrigerator comprising an operation switch having a normally open relay contact of the second auxiliary relay connected in series therein, a normally closed contact interlocking with the stop switch, and a self-holding contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979045032U JPS6141994Y2 (en) | 1979-04-04 | 1979-04-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979045032U JPS6141994Y2 (en) | 1979-04-04 | 1979-04-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55144958U JPS55144958U (en) | 1980-10-17 |
| JPS6141994Y2 true JPS6141994Y2 (en) | 1986-11-28 |
Family
ID=28922508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1979045032U Expired JPS6141994Y2 (en) | 1979-04-04 | 1979-04-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6141994Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5244882U (en) * | 1975-09-23 | 1977-03-30 |
-
1979
- 1979-04-04 JP JP1979045032U patent/JPS6141994Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5244882U (en) * | 1975-09-23 | 1977-03-30 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55144958U (en) | 1980-10-17 |
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