EP0173304A3 - Alarm device to indicate a pressure change condition - Google Patents

Alarm device to indicate a pressure change condition Download PDF

Info

Publication number
EP0173304A3
EP0173304A3 EP85110783A EP85110783A EP0173304A3 EP 0173304 A3 EP0173304 A3 EP 0173304A3 EP 85110783 A EP85110783 A EP 85110783A EP 85110783 A EP85110783 A EP 85110783A EP 0173304 A3 EP0173304 A3 EP 0173304A3
Authority
EP
European Patent Office
Prior art keywords
alarm device
sounder
indicate
pressure change
change condition
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.)
Withdrawn
Application number
EP85110783A
Other languages
German (de)
French (fr)
Other versions
EP0173304A2 (en
Inventor
Erfindernennung liegt noch nicht vor Die
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.)
Interlava AG
Original Assignee
Interlava AG
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 Interlava AG filed Critical Interlava AG
Publication of EP0173304A2 publication Critical patent/EP0173304A2/en
Publication of EP0173304A3 publication Critical patent/EP0173304A3/en
Withdrawn legal-status Critical Current

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
    • H01H35/34—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by diaphragm

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Measuring Fluid Pressure (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

Alarmeinrichtung zur Anzeige eines auf eine Druckän­ derung zurückgehenden Zustands, insbesondere zur An­ zeige des Staubbeutelfüllungsgrads bei Staubsaugern oder des Erschöpfungsgrads von Filtern bei Dunstabzugshau­ ben, Klimaanlagen u. dgl., mit einem von einer Membran gebildeten Unterdruckschalter, der bei durch das Erreichen eines vorgegebenen Unterdruckschwellwertes bewirkter Kontaktgabe einen elektrischen Oszillator ansteuert, der Teil eines Schallgebers ist, der an der zur Membran abge­ wandten Seite eines Schallgebers ist, der an der zur Mem­ bran abgewandten Seite der einheitlichen Gehäusestruktur der Alarmeinrichtung angeordnet ist und eine Piezoquarz­ platte als Schallgeber trägt. Alarm device for displaying a pressure on a change in declining state, especially to the show the dust bag filling level with vacuum cleaners or the degree of exhaustion of filters at extractor hood ben, air conditioning and. Like, with one of a membrane formed vacuum switch, which by reaching a predetermined negative pressure threshold Contact controls an electrical oscillator that Is part of a sounder, which abge to the membrane is the opposite side of a sound generator, which on the Mem branch facing away from the uniform housing structure the alarm device is arranged and a piezo quartz plate as a sounder.

EP85110783A 1984-08-29 1985-08-28 Alarm device to indicate a pressure change condition Withdrawn EP0173304A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3431651 1984-08-29
DE19843431651 DE3431651A1 (en) 1984-08-29 1984-08-29 ALARM DEVICE FOR DISPLAYING A PRINT CHANGE

Publications (2)

Publication Number Publication Date
EP0173304A2 EP0173304A2 (en) 1986-03-05
EP0173304A3 true EP0173304A3 (en) 1988-08-24

Family

ID=6244126

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85110783A Withdrawn EP0173304A3 (en) 1984-08-29 1985-08-28 Alarm device to indicate a pressure change condition

Country Status (2)

Country Link
EP (1) EP0173304A3 (en)
DE (1) DE3431651A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4434392C1 (en) * 1994-09-27 1996-02-08 Apag Elektronik Ag Duebendorf Filling level detection system for vacuum cleaner dust bag
DE19806042A1 (en) * 1998-02-13 1999-08-19 Bosch Siemens Hausgeraete vacuum cleaner
DE102008005150B4 (en) * 2008-01-18 2013-09-26 BSH Bosch und Siemens Hausgeräte GmbH Vacuum cleaner and method for operating a vacuum cleaner
DE102010028366B4 (en) * 2010-04-29 2012-06-14 BSH Bosch und Siemens Hausgeräte GmbH Method for manufacturing vacuum cleaner with safety valve, involves measuring parameter such as pressure difference from which safety valve opens bypass air channel, and adjusting measured parameter
CN115486750B (en) * 2022-08-22 2024-01-16 深圳市无限动力发展有限公司 Blocking pipe detection mechanism and dust collection mechanism

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2750915A (en) * 1952-12-20 1956-06-19 Electrolux Ab Structure for indicating need for removing suction cleaner dust bag
DE1902090U (en) * 1964-01-15 1964-10-15 Wilhelm Ley Maschinenfabrik ELECTRIC MEMBRANE SWITCH.
DE2712201A1 (en) * 1977-03-19 1978-09-21 Gerhard Kurz DEVICE FOR DISPLAYING A STATE RESPECTING A PRINT CHANGE
DE3008372A1 (en) * 1980-03-05 1981-09-10 Gerhard 7261 Althengstett Kurz Graduated clogging indicator - operated by adjustable distance from diaphragm contact actuating glow lamps

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD33389A (en) *
DE1867540U (en) * 1961-07-26 1963-02-21 Mauz & Pfeiffer VACUUM CLEANER WITH DUST COLLECTION BIN.
US4532390A (en) * 1982-11-17 1985-07-30 Signal Lux S.P.A. Diaphragm pressure switch for controlling small pressure gradients

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2750915A (en) * 1952-12-20 1956-06-19 Electrolux Ab Structure for indicating need for removing suction cleaner dust bag
DE1902090U (en) * 1964-01-15 1964-10-15 Wilhelm Ley Maschinenfabrik ELECTRIC MEMBRANE SWITCH.
DE2712201A1 (en) * 1977-03-19 1978-09-21 Gerhard Kurz DEVICE FOR DISPLAYING A STATE RESPECTING A PRINT CHANGE
DE3008372A1 (en) * 1980-03-05 1981-09-10 Gerhard 7261 Althengstett Kurz Graduated clogging indicator - operated by adjustable distance from diaphragm contact actuating glow lamps

Also Published As

Publication number Publication date
DE3431651A1 (en) 1986-03-13
EP0173304A2 (en) 1986-03-05

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