NO148974C - Differensetrykkfoelsom styreinnretning - Google Patents

Differensetrykkfoelsom styreinnretning

Info

Publication number
NO148974C
NO148974C NO770264A NO770264A NO148974C NO 148974 C NO148974 C NO 148974C NO 770264 A NO770264 A NO 770264A NO 770264 A NO770264 A NO 770264A NO 148974 C NO148974 C NO 148974C
Authority
NO
Norway
Prior art keywords
control device
pressure sensitive
difference pressure
difference
sensitive
Prior art date
Application number
NO770264A
Other languages
English (en)
Norwegian (no)
Other versions
NO148974B (no
NO770264L (no
Inventor
William Jacob Houk
Original Assignee
Ranco Inc
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 Ranco Inc filed Critical Ranco Inc
Publication of NO770264L publication Critical patent/NO770264L/no
Publication of NO148974B publication Critical patent/NO148974B/no
Publication of NO148974C publication Critical patent/NO148974C/no

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • 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
    • F25D21/025—Detecting the presence of frost or condensate using air pressure differential detectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P13/00—Indicating or recording presence, absence, or direction, of movement
    • G01P13/0006—Indicating or recording presence, absence, or direction, of movement of fluids or of granulous or powder-like substances
    • G01P13/0066—Indicating or recording presence, absence, or direction, of movement of fluids or of granulous or powder-like substances by using differences of pressure in the fluid
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/14—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring differences of pressure in the fluid

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Measuring Fluid Pressure (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Control Of Fluid Pressure (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Braking Systems And Boosters (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
NO770264A 1976-01-30 1977-01-27 Differensetrykkfoelsom styreinnretning NO148974C (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/653,899 US4101747A (en) 1976-01-30 1976-01-30 Differential pressure operated switch

Publications (3)

Publication Number Publication Date
NO770264L NO770264L (no) 1977-08-02
NO148974B NO148974B (no) 1983-10-10
NO148974C true NO148974C (no) 1984-01-18

Family

ID=24622721

Family Applications (1)

Application Number Title Priority Date Filing Date
NO770264A NO148974C (no) 1976-01-30 1977-01-27 Differensetrykkfoelsom styreinnretning

Country Status (14)

Country Link
US (1) US4101747A (da)
JP (1) JPS5922891B2 (da)
AU (1) AU498986B2 (da)
BR (1) BR7700567A (da)
CA (1) CA1035587A (da)
DE (1) DE2703590A1 (da)
DK (1) DK154367B (da)
ES (1) ES455437A1 (da)
FR (1) FR2339903A1 (da)
GB (1) GB1521023A (da)
IT (1) IT1077968B (da)
MX (1) MX143068A (da)
NO (1) NO148974C (da)
SE (1) SE423006B (da)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH655199A5 (de) * 1981-12-21 1986-03-27 Olten Ag Elektro Apparatebau Druckschalter.
DE3627695A1 (de) * 1986-08-14 1988-02-25 Teves Gmbh Alfred Elektrohydraulische schaltvorrichtung
USD313397S (en) 1987-06-10 1991-01-01 Furnas Electric Company Pressure switch or similar article
US4795869A (en) * 1987-09-01 1989-01-03 S&C Electric Company Contact assembly for high-voltage switch
JPH01102397U (da) * 1987-12-28 1989-07-11
US4951810A (en) * 1988-07-11 1990-08-28 Robertshaw Control Company Fluid control device for electrical switch unit
US5604338A (en) * 1995-11-16 1997-02-18 Morton International, Inc. Temperature adjusting low pressure sensor
US6328647B1 (en) * 2000-04-06 2001-12-11 Jon E. Traudt Pressure differential detecting system, and method of use
US7213464B1 (en) 2004-10-25 2007-05-08 Traudt Jon E System for visually monitoring pressure in an enclosed space
US10800589B2 (en) * 2013-03-14 2020-10-13 Carlos Fernando Bazoberry Automatic preservative gas replenishing system
US12214126B2 (en) 2013-03-14 2025-02-04 Oxfo Corporation Automatic system for the conservation of gas and other substances
US20160223246A1 (en) * 2013-09-25 2016-08-04 John Bean Technologies Ab Method for defrosting a gas cooling arrangement of a freezer
CA3134421C (en) * 2019-03-19 2024-04-16 Boston Wine Devices, Llc Automatic preservative gas replenishing system
WO2020263560A1 (en) 2019-06-26 2020-12-30 Carrier Corporation Transportation refrigeration unit with adaptive defrost
KR20220018180A (ko) * 2020-08-06 2022-02-15 엘지전자 주식회사 냉장고
NZ803966A (en) * 2022-09-22 2025-11-28 Hussmann Corp Refrigeration system with demand fluid defrost

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR610730A (fr) * 1926-02-04 1926-09-11 Interrupteur électrique à mouvement brusque
US2109145A (en) * 1935-06-28 1938-02-22 American District Telegraph Co Diaphragm switch
US2092955A (en) * 1936-06-06 1937-09-14 Chicago Flexible Shaft Co Motor and speed regulator therefor
DE1029910B (de) * 1954-02-11 1958-05-14 Siemens Ag Elektrische druckmittelbetaetigte Kontaktanordnung
US2831083A (en) * 1955-07-22 1958-04-15 Fabregas Jose Hugues Actuating means adapted to utilize a gaseous fluid for its operation
LU34734A1 (da) * 1956-01-26
US2962565A (en) * 1959-01-15 1960-11-29 Albers H Michael Level control device
US3092305A (en) * 1959-04-29 1963-06-04 North American Aviation Inc Precision pressure generator system
US3330925A (en) * 1965-08-04 1967-07-11 Servonic Instr Inc Snap-acting pressure switch
NL6701141A (da) * 1967-01-25 1968-07-26
US3490424A (en) * 1967-07-22 1970-01-20 Bosch Gmbh Robert Pressure-inductance value transducer
US3676821A (en) * 1968-12-05 1972-07-11 Bunker Ramo Fluid-pressure transducer
US3584168A (en) * 1968-12-30 1971-06-08 Texas Instruments Inc Fluid pressure operated diaphragm switch with improved means and method for calibration
DE2029981C3 (de) * 1970-06-18 1979-08-02 Vdo Adolf Schindling Ag, 6000 Frankfurt Einrichtung zum Umwandeln des Druckes eines Fluids in ein elektrisches Signal
DE2031580C3 (de) * 1970-06-26 1979-08-09 Vdo Adolf Schindling Ag, 6000 Frankfurt Einrichtung zum Umwandeln des Druckes eines Fluids in ein elektrisches Signal
US3688064A (en) * 1970-08-06 1972-08-29 Robertshaw Controls Co Vaccuum operated electrical switch with cup shaped diaphragm normally holding contacts closed
DE2125809C3 (de) * 1971-05-25 1982-08-12 Danfoss A/S, 6430 Nordborg Pressostat
DE2156008C2 (de) * 1971-11-11 1982-12-16 Vdo Adolf Schindling Ag, 6000 Frankfurt Druckwandler
JPS5331635B2 (da) * 1972-11-01 1978-09-04
US3827828A (en) * 1972-12-26 1974-08-06 M Edwards Fluid pump control system
US3874052A (en) * 1973-10-01 1975-04-01 Spencer C Schantz Method of forming and installing pressure responsive diaphragms

Also Published As

Publication number Publication date
IT1077968B (it) 1985-05-08
JPS5922891B2 (ja) 1984-05-29
GB1521023A (en) 1978-08-09
DK154367B (da) 1988-11-07
ES455437A1 (es) 1979-06-01
JPS52101085A (en) 1977-08-24
SE7700712L (sv) 1977-07-31
DE2703590A1 (de) 1977-08-04
AU2152477A (en) 1978-07-27
AU498986B2 (en) 1979-03-29
NO148974B (no) 1983-10-10
BR7700567A (pt) 1977-10-04
DK38677A (da) 1977-07-31
US4101747A (en) 1978-07-18
NO770264L (no) 1977-08-02
SE423006B (sv) 1982-04-05
MX143068A (es) 1981-03-09
FR2339903A1 (fr) 1977-08-26
FR2339903B1 (da) 1980-07-18
CA1035587A (en) 1978-08-01

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