IT1137913B - Sensore di brina - Google Patents
Sensore di brinaInfo
- Publication number
- IT1137913B IT1137913B IT22533/81A IT2253381A IT1137913B IT 1137913 B IT1137913 B IT 1137913B IT 22533/81 A IT22533/81 A IT 22533/81A IT 2253381 A IT2253381 A IT 2253381A IT 1137913 B IT1137913 B IT 1137913B
- Authority
- IT
- Italy
- Prior art keywords
- drop sensor
- drop
- sensor
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B19/00—Alarms responsive to two or more different undesired or abnormal conditions, e.g. burglary and fire, abnormal temperature and abnormal rate of flow
- G08B19/02—Alarm responsive to formation or anticipated formation of ice
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/025—Change of phase or condition
- G01N2291/0251—Solidification, icing, curing composites, polymerisation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/02845—Humidity, wetness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/04—Wave modes and trajectories
- G01N2291/042—Wave modes
- G01N2291/0427—Flexural waves, plate waves, e.g. Lamb waves, tuning fork, cantilever
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Defrosting Systems (AREA)
- Geophysics And Detection Of Objects (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8509580A JPS5712329A (en) | 1980-06-25 | 1980-06-25 | Frost sensor |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8122533A0 IT8122533A0 (it) | 1981-06-24 |
IT1137913B true IT1137913B (it) | 1986-09-10 |
Family
ID=13849040
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT22533/81A IT1137913B (it) | 1980-06-25 | 1981-06-24 | Sensore di brina |
Country Status (4)
Country | Link |
---|---|
US (1) | US4404852A (it) |
JP (1) | JPS5712329A (it) |
DE (1) | DE3124855C2 (it) |
IT (1) | IT1137913B (it) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3205370C1 (de) * | 1982-02-16 | 1983-07-07 | Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart | Sensor zur Überwachung von Reif- und/oder Eisablagerungen auf Oberflächen, insbesondere auf Verdampferoberflächen von Kältemaschinen, Wärmepumpen oder dergleichen |
GB2124764B (en) * | 1982-08-03 | 1986-01-08 | Atomic Energy Authority Uk | Ice detector |
US5212988A (en) * | 1988-02-29 | 1993-05-25 | The Reagents Of The University Of California | Plate-mode ultrasonic structure including a gel |
WO1989008336A1 (en) * | 1988-02-29 | 1989-09-08 | The Regents Of The University Of California | Plate-mode ultrasonic sensor |
US5189914A (en) * | 1988-02-29 | 1993-03-02 | The Regents Of The University Of California | Plate-mode ultrasonic sensor |
US4991283A (en) * | 1989-11-27 | 1991-02-12 | Johnson Gary W | Sensor elements in multilayer ceramic tape structures |
US5051645A (en) * | 1990-01-30 | 1991-09-24 | Johnson Service Company | Acoustic wave H2 O phase-change sensor capable of self-cleaning and distinguishing air, water, dew, frost and ice |
US5187980A (en) * | 1990-05-31 | 1993-02-23 | The United States Of America As Represented By The United States Department Of Energy | Method and apparatus for acoustic plate mode liquid-solid phase transition detection |
FI95751C (fi) * | 1993-12-09 | 1996-03-11 | Labko Ab Oy | Menetelmä veden eri faasien tunnistamiseksi ja menetelmässä käytettäväanturijärjestely |
US5922958A (en) * | 1996-05-22 | 1999-07-13 | Rosemount Aerospace Inc. | Acoustic channel for contaminant detection on a surface |
US6121856A (en) * | 1998-08-21 | 2000-09-19 | Lockheed Martin Corporation | Bulk acoustic wave device with lamb wave mode selection |
US20080223052A1 (en) * | 2007-03-14 | 2008-09-18 | Ronald Ravi Khosla | Retrofittable air conditioner to refrigeration conversion unit |
US9062906B2 (en) * | 2007-03-14 | 2015-06-23 | Store It Cold, Llc | Retrofittable air conditioner to refrigeration conversion unit |
US7969566B2 (en) * | 2008-06-05 | 2011-06-28 | The Boeing Company | Apparatus and method for detection of a film on a surface |
KR20100058813A (ko) * | 2008-11-25 | 2010-06-04 | 삼성전자주식회사 | 냉각 장치 및 그 제어 방법 |
US20110185755A1 (en) * | 2010-01-29 | 2011-08-04 | Samsung Electronics Co., Ltd. | Cooling apparatus and frost detecting method thereof |
EP2541174B1 (en) | 2010-02-23 | 2020-10-14 | LG Electronics Inc. | Refrigerator |
US10343783B2 (en) | 2016-04-28 | 2019-07-09 | Rosemount Aerospace Inc. | Method and apparatus of detecting liquid water in a cloud |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2414756A (en) * | 1943-05-07 | 1947-01-21 | Honeywell Regulator Co | Condition responsive device |
US2789281A (en) * | 1954-03-15 | 1957-04-16 | Clevite Corp | Ice detector |
US4054255A (en) * | 1976-04-01 | 1977-10-18 | System Development Corporation | Microwave ice detector |
DE2632323C3 (de) * | 1976-07-17 | 1979-02-22 | Thyssen Niederrhein Ag Huetten- Und Walzwerke, 4200 Oberhausen | Vorrichtung zur Ultraschallprüfung von plattenförmigen Körpern, insbesondere Blechband, nach dem Impuls-Echo-Verfahren mit Lambwellen |
DE2632632A1 (de) * | 1976-07-20 | 1978-01-26 | Ici Ltd | Verfahren und geraet zur ueberwachung von parametern |
DE2730648A1 (de) * | 1977-07-07 | 1979-01-25 | Stiebel Eltron Gmbh & Co Kg | Abtaubarer verdampfer |
FI61249C (fi) * | 1979-10-10 | 1982-06-10 | Vaisala Oy | Anordning foer indikering av nedisning av asfaltsvaeg eller motsvarande |
-
1980
- 1980-06-25 JP JP8509580A patent/JPS5712329A/ja active Granted
-
1981
- 1981-06-24 IT IT22533/81A patent/IT1137913B/it active
- 1981-06-24 US US06/276,816 patent/US4404852A/en not_active Expired - Lifetime
- 1981-06-24 DE DE3124855A patent/DE3124855C2/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
IT8122533A0 (it) | 1981-06-24 |
JPS6367644B2 (it) | 1988-12-27 |
JPS5712329A (en) | 1982-01-22 |
US4404852A (en) | 1983-09-20 |
DE3124855C2 (de) | 1985-12-05 |
DE3124855A1 (de) | 1982-02-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19950630 |