JPS57173778A - Frost sensor - Google Patents

Frost sensor

Info

Publication number
JPS57173778A
JPS57173778A JP6015981A JP6015981A JPS57173778A JP S57173778 A JPS57173778 A JP S57173778A JP 6015981 A JP6015981 A JP 6015981A JP 6015981 A JP6015981 A JP 6015981A JP S57173778 A JPS57173778 A JP S57173778A
Authority
JP
Japan
Prior art keywords
frost
light emitting
light receiving
emitting element
receiving element
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
JP6015981A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6367647B2 (enrdf_load_stackoverflow
Inventor
Yasukuni Yamane
Nobutoshi Gako
Chuji Suzuki
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Priority to JP6015981A priority Critical patent/JPS57173778A/ja
Publication of JPS57173778A publication Critical patent/JPS57173778A/ja
Publication of JPS6367647B2 publication Critical patent/JPS6367647B2/ja
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/02—Detecting the presence of frost or condensate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/11—Sensor to detect if defrost is necessary
    • F25B2700/111—Sensor to detect if defrost is necessary using an emitter and receiver, e.g. sensing by emitting light or other radiation and receiving reflection by a sensor

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
JP6015981A 1981-04-20 1981-04-20 Frost sensor Granted JPS57173778A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6015981A JPS57173778A (en) 1981-04-20 1981-04-20 Frost sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6015981A JPS57173778A (en) 1981-04-20 1981-04-20 Frost sensor

Publications (2)

Publication Number Publication Date
JPS57173778A true JPS57173778A (en) 1982-10-26
JPS6367647B2 JPS6367647B2 (enrdf_load_stackoverflow) 1988-12-27

Family

ID=13134087

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6015981A Granted JPS57173778A (en) 1981-04-20 1981-04-20 Frost sensor

Country Status (1)

Country Link
JP (1) JPS57173778A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003095994A1 (fr) * 2002-05-14 2003-11-20 Airex Co.,Ltd. Capteur de condensation et procede permettant de controler un film de condensat dans un espace clos au moyen de ce capteur
CN109520927A (zh) * 2018-10-22 2019-03-26 江苏大学 一种茶园探霜传感器
CN116748254A (zh) * 2023-06-29 2023-09-15 华电电力科学研究院有限公司 一种光伏板的自动清洁方法、装置及光伏电站

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49134386A (enrdf_load_stackoverflow) * 1972-10-23 1974-12-24
JPS54109600U (enrdf_load_stackoverflow) * 1978-01-19 1979-08-01
JPS5668886U (enrdf_load_stackoverflow) * 1979-10-31 1981-06-08

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49134386A (enrdf_load_stackoverflow) * 1972-10-23 1974-12-24
JPS54109600U (enrdf_load_stackoverflow) * 1978-01-19 1979-08-01
JPS5668886U (enrdf_load_stackoverflow) * 1979-10-31 1981-06-08

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003095994A1 (fr) * 2002-05-14 2003-11-20 Airex Co.,Ltd. Capteur de condensation et procede permettant de controler un film de condensat dans un espace clos au moyen de ce capteur
US7161677B2 (en) 2002-05-14 2007-01-09 Airex Co., Ltd. Condensation sensor and method of controlling condensate film in sealed space with condensation sensor
DE10392632B4 (de) 2002-05-14 2023-06-29 Airex Co., Ltd. Kondensationssensor und Verfahren zum Kontrollieren eines Kondensationsfilms in einem geschlossenen Raum mit einem Kondensationssensor
CN109520927A (zh) * 2018-10-22 2019-03-26 江苏大学 一种茶园探霜传感器
CN109520927B (zh) * 2018-10-22 2023-10-10 江苏大学 一种茶园探霜传感器
CN116748254A (zh) * 2023-06-29 2023-09-15 华电电力科学研究院有限公司 一种光伏板的自动清洁方法、装置及光伏电站

Also Published As

Publication number Publication date
JPS6367647B2 (enrdf_load_stackoverflow) 1988-12-27

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