JPH0213945U - - Google Patents
Info
- Publication number
- JPH0213945U JPH0213945U JP9204888U JP9204888U JPH0213945U JP H0213945 U JPH0213945 U JP H0213945U JP 9204888 U JP9204888 U JP 9204888U JP 9204888 U JP9204888 U JP 9204888U JP H0213945 U JPH0213945 U JP H0213945U
- Authority
- JP
- Japan
- Prior art keywords
- compressor
- differential pressure
- pressure switch
- pipe
- piping
- 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
Links
- 239000007788 liquid Substances 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims 1
- 230000001050 lubricating effect Effects 0.000 claims 1
- 239000003507 refrigerant Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
Landscapes
- Control Of Positive-Displacement Pumps (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Description
第１図はこの考案の一実施例による圧縮機の保
護装置を含む冷凍装置の系統図を示す。第２図は
従来の冷凍装置の系統図を示す。第３図は本実施
例の電磁弁前後の圧力変化を示す。
１は圧縮機、２は吐出逆止弁、３は凝縮器、４
は膨張弁、５は蒸発器、６は液体噴射回路配管、
７は電磁弁、８，９は圧力取出管、１０は差圧圧
力スイツチ、１１〜１７は配管、１８は制御回路
。なお、図中、同一符号は同一または相当部分を
示す。
FIG. 1 shows a system diagram of a refrigeration system including a compressor protection device according to an embodiment of the present invention. FIG. 2 shows a system diagram of a conventional refrigeration system. FIG. 3 shows pressure changes before and after the solenoid valve of this embodiment. 1 is a compressor, 2 is a discharge check valve, 3 is a condenser, 4
is an expansion valve, 5 is an evaporator, 6 is liquid injection circuit piping,
7 is a solenoid valve, 8 and 9 are pressure take-off pipes, 10 is a differential pressure switch, 11 to 17 are piping, and 18 is a control circuit. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.
Claims (1)
る配管などにより、上記圧縮機内に液冷媒の噴射
を行ない、上記圧縮機の冷却、潤滑作用を行なう
とともに、上記電磁弁の上流側の配管に一側が接
続された第１の圧力取出管と、この第１の圧力取
出管の他側に一側が接続された差圧圧力スイツチ
とこの差圧圧力スイツチの他側に一側が接続され
た第２の圧力取出管と、この第２の圧力取出管の
他側が上記電磁弁の下流側の配管に接続された圧
縮機の保護装置において、上記差圧圧力スイツチ
に制御回路を接続し、この制御回路により該差圧
圧力スイツチから出るスイツチング信号が起動時
に発生したものかどうかを判定するようにしたこ
とを特徴とする圧縮機の保護装置。 Liquid refrigerant is injected into the compressor through the compressor, condenser, solenoid valve, and piping that connects these, thereby cooling and lubricating the compressor. a differential pressure switch having one side connected to the other side of the first pressure outlet pipe; and a second pressure outlet pipe having one side connected to the other side of the differential pressure switch. In a compressor protection device in which a pressure take-off pipe and the other side of the second pressure take-off pipe are connected to piping on the downstream side of the solenoid valve, a control circuit is connected to the differential pressure switch, and the control circuit A protection device for a compressor, characterized in that it is determined whether a switching signal output from the differential pressure switch is generated at the time of startup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9204888U JPH0720530Y2 (en) | 1988-07-11 | 1988-07-11 | Compressor protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9204888U JPH0720530Y2 (en) | 1988-07-11 | 1988-07-11 | Compressor protector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0213945U true JPH0213945U (en) | 1990-01-29 |
| JPH0720530Y2 JPH0720530Y2 (en) | 1995-05-15 |
Family
ID=31316506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9204888U Expired - Lifetime JPH0720530Y2 (en) | 1988-07-11 | 1988-07-11 | Compressor protector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0720530Y2 (en) |
-
1988
- 1988-07-11 JP JP9204888U patent/JPH0720530Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0720530Y2 (en) | 1995-05-15 |
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