SE465060B - INDICATOR DEVICE FOR VACUUM CLEANER - Google Patents
INDICATOR DEVICE FOR VACUUM CLEANERInfo
- Publication number
- SE465060B SE465060B SE8902879A SE8902879A SE465060B SE 465060 B SE465060 B SE 465060B SE 8902879 A SE8902879 A SE 8902879A SE 8902879 A SE8902879 A SE 8902879A SE 465060 B SE465060 B SE 465060B
- Authority
- SE
- Sweden
- Prior art keywords
- vacuum cleaner
- filter
- air
- indicator device
- actuated
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
- A47L9/19—Means for monitoring filtering operation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Description
465 060 När undertrycket i filterrummet 13 når en viss förutbestämd nivå mot- svarande fylld filterpåse, omställes membranet 21 mot verkan av fjädern 23 till det heldragna läget i figuren. Härvid öppnas utloppet 22, så att en mindre luftström kan utströmma genom detta. Denna luftström passerar på sin väg ut i det fria undersidan av en indikatorplatta 26, såsom anges av pilarna ifiguren. 465 060 When the negative pressure in the filter space 13 reaches a certain predetermined level corresponding to the filled filter bag, the membrane 21 is adjusted against the action of the spring 23 to the solid position in the figure. In this case, the outlet 22 is opened, so that a smaller air flow can flow out through it. This air flow passes on its way out into the free underside of an indicator plate 26, as indicated by the arrows in the figure.
Vid passagen genom dammsugaren uppvärms luften, så att den, då den lämnar dammsugaren, har betydligt högre temperatur än omgivningen. Indikator- plattan 26 kommer därför att uppvärmas till högre temperatur än normalt.During the passage through the vacuum cleaner, the air is heated, so that when it leaves the vacuum cleaner, it has a significantly higher temperature than the surroundings. The indicator plate 26 will therefore be heated to a higher temperature than normal.
För att åstadkomma en tydlig indikering av att filterpåsen 12 är fylld är plattan 26 på sin översida försedd med en för ändamålet lämplig symbol utförd f. i ett värmekänsligt material av känt slag, så att symbolen normalt är osynlig men framträder, då plattan 26 uppvärmts ett antal grader över normal rums- temperatur.In order to give a clear indication that the filter bag 12 is filled, the plate 26 is provided on its upper side with a suitable symbol made f. In a heat-sensitive material of known kind, so that the symbol is normally invisible but appears when the plate 26 is heated a number of degrees above normal room temperature.
Genom att indikatorplattan kan utföras i vilken som helst önskad storlek är det möjligt att åstadkomma en klar och lättavläst indikering. Företrädesvis väljes plattans 26 material och/eller tjocklek så att den indikerande symbolen framträder med en lämplig fördröjning efter membranets 21 omställning till öppet läge. Härigenom uppnås att indikering erhålles först vid varaktig tryck- förändring i filterrummet förorsakad av filterpåsens igensättning och inte vid tillfälliga tryckförändringar av andra orsaker.Because the indicator plate can be made in any desired size, it is possible to provide a clear and easy-to-read indication. Preferably, the material and / or thickness of the plate 26 is selected so that the indicating symbol appears with a suitable delay after the transition of the diaphragm 21 to the open position. In this way, it is achieved that the indication is obtained only in the event of a permanent pressure change in the filter chamber caused by the clogging of the filter bag and not in the event of temporary pressure changes for other reasons.
Den uppfinningsenliga anordningen kan även användas för indikering av utloppsfiltrets 17 igensättning. Ventilen som styr luftflödet till indikatorplattan 26 utföres härvid så att den påverkas av trycket i motorrummet 16 och öppnar då detta tryck överstiger ett förutbestämd värde. å»The device according to the invention can also be used for indicating the clogging of the outlet filter 17. The valve which controls the air flow to the indicator plate 26 is hereby designed so that it is affected by the pressure in the engine compartment 16 and opens when this pressure exceeds a predetermined value. å »
Claims (3)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8902879A SE465060B (en) | 1989-08-30 | 1989-08-30 | INDICATOR DEVICE FOR VACUUM CLEANER |
DE19904025482 DE4025482A1 (en) | 1989-08-30 | 1990-08-10 | Electric vacuum cleaner suction display - monitors temp. of air on output side of suction fan to provide colour variation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8902879A SE465060B (en) | 1989-08-30 | 1989-08-30 | INDICATOR DEVICE FOR VACUUM CLEANER |
Publications (3)
Publication Number | Publication Date |
---|---|
SE8902879D0 SE8902879D0 (en) | 1989-08-30 |
SE8902879L SE8902879L (en) | 1991-03-01 |
SE465060B true SE465060B (en) | 1991-07-22 |
Family
ID=20376777
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8902879A SE465060B (en) | 1989-08-30 | 1989-08-30 | INDICATOR DEVICE FOR VACUUM CLEANER |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE4025482A1 (en) |
SE (1) | SE465060B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2320419B (en) | 1996-12-20 | 2000-08-16 | Notetry Ltd | Improved vacuum cleaner |
DE10229796A1 (en) * | 2002-07-03 | 2004-01-15 | Vorwerk & Co. Interholding Gmbh | Filters for a vacuum cleaner and vacuum cleaners with a pre-filter and a blow-out filter |
DE102010016789B4 (en) * | 2010-05-05 | 2012-01-12 | Miele & Cie. Kg | Display device for a filter, vacuum cleaner and use of such a filter as a vacuum cleaner exhaust filter |
-
1989
- 1989-08-30 SE SE8902879A patent/SE465060B/en not_active Application Discontinuation
-
1990
- 1990-08-10 DE DE19904025482 patent/DE4025482A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
DE4025482A1 (en) | 1991-03-07 |
SE8902879L (en) | 1991-03-01 |
SE8902879D0 (en) | 1989-08-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NAV | Patent application has lapsed |
Ref document number: 8902879-9 Effective date: 19920301 |