JPS6367647B2 - - Google Patents

Info

Publication number
JPS6367647B2
JPS6367647B2 JP56060159A JP6015981A JPS6367647B2 JP S6367647 B2 JPS6367647 B2 JP S6367647B2 JP 56060159 A JP56060159 A JP 56060159A JP 6015981 A JP6015981 A JP 6015981A JP S6367647 B2 JPS6367647 B2 JP S6367647B2
Authority
JP
Japan
Prior art keywords
light
frost
emitting element
receiving element
base
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.)
Expired
Application number
JP56060159A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57173778A (en
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 JPS57173778A (en) 1982-10-26
JPS6367647B2 true 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)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100468051C (zh) 2002-05-14 2009-03-11 株式会社爱丽克斯 冷凝传感器和使用该冷凝传感器的密闭空间内的冷凝膜管理方法
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

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA971652A (en) * 1972-10-23 1975-07-22 T. Rayman Ringer Ice detector
JPS54109600U (enrdf_load_stackoverflow) * 1978-01-19 1979-08-01
JPS5668886U (enrdf_load_stackoverflow) * 1979-10-31 1981-06-08

Also Published As

Publication number Publication date
JPS57173778A (en) 1982-10-26

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