JPS5612545A - Detector for detecting state of refrigerant - Google Patents

Detector for detecting state of refrigerant

Info

Publication number
JPS5612545A
JPS5612545A JP8883679A JP8883679A JPS5612545A JP S5612545 A JPS5612545 A JP S5612545A JP 8883679 A JP8883679 A JP 8883679A JP 8883679 A JP8883679 A JP 8883679A JP S5612545 A JPS5612545 A JP S5612545A
Authority
JP
Japan
Prior art keywords
electrodes
refrigerant
change
increase
cylindrical
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
JP8883679A
Other languages
Japanese (ja)
Inventor
Manabu Fujii
Osamu Takahashi
Shizuo Fuchita
Yosuke Yamamitsu
Kisuke Yamazaki
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP8883679A priority Critical patent/JPS5612545A/en
Publication of JPS5612545A publication Critical patent/JPS5612545A/en
Pending legal-status Critical Current

Links

Landscapes

  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

PURPOSE: To improve the detection sensitivity and stability by arranging a plurality of cylindrical electrodes substantially concentrically in parallel with the flow of refrigerant.
CONSTITUTION: Cross-shaped electrode supports 12, 13 placed in a protecting sleeve 10 carry outermost cylindrical electrode 14 and inner cylindrical electrodes 15, 16. These electrodes are arranged concentrically, and are connected to a lead wire 7 through a spring contact portion 12b and a terminal 12a. In consequence, a capacitance is formed between the electrodes 14, 15 and between the electrodes 15, 16. It is, therefore, possible to sense the change of phase of refrigerant flowing through each of the gaps between the electrodes 14, 15 and between the electrodes 15, 16 as a change of capacitance due to a change in the dielectric constant. According to this arrangement, it is possible to increase the opposing area without being accompanied by increase of the size of the detector as a whole. In addition, since the required cross-sectional area of the flow passage is preserved even with the reduced distance between adjacent electrodes, no substantial increase of the flow resistance is caused to eliminate any pressure drop of refrigerant. The cylindrical electrode 14 exposed to the outside ensures a stable operation against external noise.
COPYRIGHT: (C)1981,JPO&Japio
JP8883679A 1979-07-12 1979-07-12 Detector for detecting state of refrigerant Pending JPS5612545A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8883679A JPS5612545A (en) 1979-07-12 1979-07-12 Detector for detecting state of refrigerant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8883679A JPS5612545A (en) 1979-07-12 1979-07-12 Detector for detecting state of refrigerant

Publications (1)

Publication Number Publication Date
JPS5612545A true JPS5612545A (en) 1981-02-06

Family

ID=13954028

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8883679A Pending JPS5612545A (en) 1979-07-12 1979-07-12 Detector for detecting state of refrigerant

Country Status (1)

Country Link
JP (1) JPS5612545A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2406911A (en) * 2003-10-06 2005-04-13 Ricardo Inc Aeration sensing device
CN103969280A (en) * 2013-01-31 2014-08-06 珠海格力电器股份有限公司 Refrigerant abnormity detection method and air conditioner
JP2014524566A (en) * 2011-08-02 2014-09-22 スネクマ Multi-electrode sensor for measuring gas content in two-phase flow
JP2015031589A (en) * 2013-08-02 2015-02-16 株式会社前川製作所 Solid phase rate measuring apparatus of two-phase fluid, and cooling system
EP3140600A4 (en) * 2014-05-06 2017-12-20 Evapco, Inc. Sensor for coil defrost in a refrigeration system evaporator

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2406911A (en) * 2003-10-06 2005-04-13 Ricardo Inc Aeration sensing device
GB2406911B (en) * 2003-10-06 2006-10-18 Ricardo Inc Aeration sensing device
JP2014524566A (en) * 2011-08-02 2014-09-22 スネクマ Multi-electrode sensor for measuring gas content in two-phase flow
CN103969280A (en) * 2013-01-31 2014-08-06 珠海格力电器股份有限公司 Refrigerant abnormity detection method and air conditioner
JP2015031589A (en) * 2013-08-02 2015-02-16 株式会社前川製作所 Solid phase rate measuring apparatus of two-phase fluid, and cooling system
EP3140600A4 (en) * 2014-05-06 2017-12-20 Evapco, Inc. Sensor for coil defrost in a refrigeration system evaporator

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