JPS5797978A - Expansion valve for refrigerant - Google Patents

Expansion valve for refrigerant

Info

Publication number
JPS5797978A
JPS5797978A JP55175466A JP17546680A JPS5797978A JP S5797978 A JPS5797978 A JP S5797978A JP 55175466 A JP55175466 A JP 55175466A JP 17546680 A JP17546680 A JP 17546680A JP S5797978 A JPS5797978 A JP S5797978A
Authority
JP
Japan
Prior art keywords
orifice
refrigerant
bubbles
high pressure
throat
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
Application number
JP55175466A
Other languages
Japanese (ja)
Other versions
JPH0258514B2 (en
Inventor
Shigeru Kaihatsu
Katsuya Ishii
Masaru Watabe
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.)
FUJI KOKI SEISAKUSHO KK
FUJI KOUKI SEISAKUSHO KK
Fujikoki Corp
Denso Corp
Original Assignee
FUJI KOKI SEISAKUSHO KK
FUJI KOUKI SEISAKUSHO KK
Fujikoki Corp
NipponDenso Co 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 FUJI KOKI SEISAKUSHO KK, FUJI KOUKI SEISAKUSHO KK, Fujikoki Corp, NipponDenso Co Ltd filed Critical FUJI KOKI SEISAKUSHO KK
Priority to JP55175466A priority Critical patent/JPS5797978A/en
Publication of JPS5797978A publication Critical patent/JPS5797978A/en
Publication of JPH0258514B2 publication Critical patent/JPH0258514B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Temperature-Responsive Valves (AREA)

Abstract

PURPOSE: To prevent generation of bubbles in an orifice by setting a specific proportion of a diameter and a length of the orifice on the high pressure side and forming another throat at the lower side of a valve seat of the orifice so as to reduce a pressure loss on the high pressure side and an area through which a refrigerant passes.
CONSTITUTION: When a high pressure refrigerant flowing into a refrigerant passage 23 on the high pressure side of an expansion valve 7 runs into a small diameter port 29, the flow speed of the refrigerant is increased. The refrigerant then flows into an orifice 31 and is contracted adjacently to an upstream end 63 of the orifice 31. Because a proportion of an opening diameter (d) and a length (1) of the orifice 31 is set 1/d≤ 0.8, an area where bubbles are produced between an external periphery of the contraction flow and the wall face of the orifice 31 may be reduced to result in less pressure drop so that generation of the bubbles caused by boiling is restricted. Thereby, vibration of a valve member 35 resulting from a cavitation is restricted so that a passing noise of the refrigerant may be reduced. Additionally, the second throat 69 is formed on the lower side of the first throat between a valve body 37 and a valve seat 33, contracting a refrigerant passage on the lower side of the valve member. Because of this, a pressure drop in the vicinity to the valve seat 33 is not significant and the generation of the bubbles is satisfactorily restricted.
COPYRIGHT: (C)1982,JPO&Japio
JP55175466A 1980-12-11 1980-12-11 Expansion valve for refrigerant Granted JPS5797978A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55175466A JPS5797978A (en) 1980-12-11 1980-12-11 Expansion valve for refrigerant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55175466A JPS5797978A (en) 1980-12-11 1980-12-11 Expansion valve for refrigerant

Publications (2)

Publication Number Publication Date
JPS5797978A true JPS5797978A (en) 1982-06-17
JPH0258514B2 JPH0258514B2 (en) 1990-12-07

Family

ID=15996546

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55175466A Granted JPS5797978A (en) 1980-12-11 1980-12-11 Expansion valve for refrigerant

Country Status (1)

Country Link
JP (1) JPS5797978A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011002140A (en) * 2009-06-18 2011-01-06 Tgk Co Ltd Expansion valve
WO2015072088A1 (en) * 2013-11-14 2015-05-21 株式会社デンソー Expansion valve
JP2020041757A (en) * 2018-09-11 2020-03-19 株式会社不二工機 Expansion valve

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011002140A (en) * 2009-06-18 2011-01-06 Tgk Co Ltd Expansion valve
WO2015072088A1 (en) * 2013-11-14 2015-05-21 株式会社デンソー Expansion valve
JP2020041757A (en) * 2018-09-11 2020-03-19 株式会社不二工機 Expansion valve

Also Published As

Publication number Publication date
JPH0258514B2 (en) 1990-12-07

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