JPS5786598A - Refrigerating device - Google Patents

Refrigerating device

Info

Publication number
JPS5786598A
JPS5786598A JP16197680A JP16197680A JPS5786598A JP S5786598 A JPS5786598 A JP S5786598A JP 16197680 A JP16197680 A JP 16197680A JP 16197680 A JP16197680 A JP 16197680A JP S5786598 A JPS5786598 A JP S5786598A
Authority
JP
Japan
Prior art keywords
switching valve
pressure
centrifugal impeller
starting
solenoid switching
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
JP16197680A
Other languages
Japanese (ja)
Inventor
Masatoshi Terasaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
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 JP16197680A priority Critical patent/JPS5786598A/en
Publication of JPS5786598A publication Critical patent/JPS5786598A/en
Pending legal-status Critical Current

Links

Landscapes

  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

PURPOSE: To lower the pressure on a gas side than the pressure on the back side of an impeller at a starting time and prevent ondesirable entry of oil, by arranging a solenoid switching valve which opens at a starting time and closes during steady running, on the way of a balancing piping connecting a mechanical seal side chamber to the intake side of a centrifugal impeller.
CONSTITUTION: A gas balancing pipe 17 is arranged from a mechanical seal side A to the intake side of a centrifugal impeller 4, and a solenoid switching valve 16 opening at a starting time and closing the time of steady running on the midway of the pipe 17. Thereby, the oil leaking through the mechanical seal 6 is restrained to enter the side of the centrifugal impeller 4, by lowering the pressure on a gas side A than the pressure on the back side of the centrifugal impeller 4 by the solenoid switching valve 16 opened at the time of starting a turbocompressor 3. As the result, vndesirable entry of oil occurring at starting can be prevented. On the other hand, during steady running, the mixing of oil mist in refrigerant gas through the balancing piping 17 is restrained, by making the solenoid switching valve 16 closed.
COPYRIGHT: (C)1982,JPO&Japio
JP16197680A 1980-11-19 1980-11-19 Refrigerating device Pending JPS5786598A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16197680A JPS5786598A (en) 1980-11-19 1980-11-19 Refrigerating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16197680A JPS5786598A (en) 1980-11-19 1980-11-19 Refrigerating device

Publications (1)

Publication Number Publication Date
JPS5786598A true JPS5786598A (en) 1982-05-29

Family

ID=15745651

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16197680A Pending JPS5786598A (en) 1980-11-19 1980-11-19 Refrigerating device

Country Status (1)

Country Link
JP (1) JPS5786598A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009186028A (en) * 2008-02-01 2009-08-20 Daikin Ind Ltd Turbo refrigerator
JP2009186029A (en) * 2008-02-01 2009-08-20 Daikin Ind Ltd Turbo refrigerator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009186028A (en) * 2008-02-01 2009-08-20 Daikin Ind Ltd Turbo refrigerator
JP2009186029A (en) * 2008-02-01 2009-08-20 Daikin Ind Ltd Turbo refrigerator

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