GB2110923A - Pressure indicating arrangement in a suction cleaner - Google Patents
Pressure indicating arrangement in a suction cleaner Download PDFInfo
- Publication number
- GB2110923A GB2110923A GB08230816A GB8230816A GB2110923A GB 2110923 A GB2110923 A GB 2110923A GB 08230816 A GB08230816 A GB 08230816A GB 8230816 A GB8230816 A GB 8230816A GB 2110923 A GB2110923 A GB 2110923A
- Authority
- GB
- United Kingdom
- Prior art keywords
- suction
- pipe
- casing
- cleaner
- dust
- 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.)
- Granted
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)
- Filters For Electric Vacuum Cleaners (AREA)
- Electric Vacuum Cleaner (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
In a suction cleaner comprising a casing (2), a suction pipe (1) rotatably mounted in the casing and indicator (11) to indicate how full of dust a dust receiving bag or chamber of the cleaner is by reference to the suction pressure in the pipe, an annular chamber (3) is provided around the rotatable suction pipe and between it and the cleaner casing, the annular chamber being in communication with the pipe via bore (8) and with the indicator via bore (10). <IMAGE>
Description
SPECIFICATION
Improvements in or relating to suction cleaners
This invention relates to a suction cleaner includ
ing a casing, a suction pipe rotatably mounted in the casing and means to indicate how full of dust a dust receiving bag or chamber of the cleaner is by reference to the suction pressure in the pipe.
Such a suction cleaner is known in which a hose is led from a position where the pressure is to be tested to means to indicate how full of dust a dust receiving bag or chamber of the cleaner is. The principle upon which this works is that, as the dust bag or chamber, or even a filter of the cleaner, becomes clogged by dust, the suction pressure drops and so this change in pressure can be indicated mechanically. It is also usual for the suction pipe to be the place where the pressure is tested and, since the suction pipe is rotatably mounted in the casing of the cleaner, then the hose has to be placed around the suction pipe in several convolutions and must also allow a sufficient free length of hose to prevent it becoming twisted when the suction pipe is rotated in any direction.Accordingly, it is disadvantageous that the hose is continuously subjected to being rotated and kinked and, depending on the material used, this more or less quickly destroys the hose. Moreover, care has to be taken that no sharp rubbing edges or corners are arranged in the space where the hose is laid, since these in time also destroy the hose.
According to the present invention, there is provided a suction cleaner including a casing, a suction pipe rotatably mounted in the casing and means to indicate how full of dust a dust receiving bag or chamber of the cleaner is by reference to the suction pressure in said pipe, communication of pressure between said pipe and said means being facilitated by an annular chamber around and in communication with said pipe, said annular chamber also being in communication via a bore in a wall of said casing with said means.
For a better understanding of the invention and to show how the same may be carried into effect, reference will now be made, by way of example, to the accompanying drawing, in which the single figure is a diagrammatic sectional view of part of a suction cleaner casing, a suction pipe and a filter-clogging indicator.
The drawing shows a suction pipe 1 which is rotatably mounted in a suction cleaner casing 2.
Between the outside of the suction pipe 1 and the suction cleaner casing 2, and by the design of the pipe 1 and casing 2, there is formed an annular chamber 3, which is sealed off at its top and bottom sides 4, 5 by respectively encircling packing rings 6, 7, which are substantially of V-section which each press on the outer wall of the suction pipe 1 and a wall of the casing 2 that defines the outer wall of the chamber 3.
The casing 2 also houses a pressure indicating element 11, this element 11 serving to give an indication, working on changing pressures, at to how full a dust bag or chamber of the cleaner is, this
being achieved as a dust filter, which may, for example, be constituted by the dust bag itself, becomes clogged with dust.
Communication of pressure between the pipe 1 and the pressure indicating element 11 is facilitated by the annular chamber 3, there being a connecting bore 8 through the wall of the suction pipe 1 which connects the annular chamber 3 to the inside 9 of the suction pipe 1 and a filter 12 is provided in the pipe 1, this filter covering the bore 8 to prevent penetration of dust into the bore 8.
In addition, the casing 2 is provided with a connecting bore 10 which connects the outside of the annular chamber 3 to the pressure indicating element 11. Accordingly, pressure in the suction pipe 1 can be transmitted from the inside 9 of the pipe 1 via the connecting bore 8, the annular chamber 3 and the connecting bore 10 to the pressure indicating element 11.
With this arrangement, it can be seen that the suction pipe can be rotated through 3600 or more without restriction (for example, without requiring the provision of a hose) and facilitating pressure transmission from the pipe 1 to the indicating element 11. Because no hose is fitted around the rotatable suction pipe 1, it will be seen that the pressure indicating element 11 can be placed at a position remote from the pipe 1.
1. A suction cleaner including a casing, a suction pipe rotatably mounted in the casing and means to indicate how full of dust a dust receiving bag of chamber of the cleaner is by reference to the suction pressure in said pipe, communication of pressure between said pipe and said means being facilitated by an annular chamber around and in communication with said pipe, said annular chamber also being in communication via a bore in a wall of said casing with said means.
2. A suction cleaner as claimed in claim 1, wherein said annular chamber is closed at either end by means of encircling packing rings.
3. A suction cleaner as claimed in claim 2, wherein said packing rings are of substantially
V-section which press between the walls of said annular chamber.
4. A suction cleaner as claimed in any one of the preceding claims, wherein communication between said pipe and said annular chamber is facilitated by a connecting bore in the wall of the suction pipe, said bore in said wall of said casing leading directly to said means.
5. A suction cleaner including a casing, a suction pipe rotatably mounted in the casing and means to indicate howfull of dust a dust receiving bag or chamber of the cleaner is, substantially as hereinbefore described with reference to the accompanying drawing.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (5)
1. A suction cleaner including a casing, a suction pipe rotatably mounted in the casing and means to indicate how full of dust a dust receiving bag of chamber of the cleaner is by reference to the suction pressure in said pipe, communication of pressure between said pipe and said means being facilitated by an annular chamber around and in communication with said pipe, said annular chamber also being in communication via a bore in a wall of said casing with said means.
2. A suction cleaner as claimed in claim 1, wherein said annular chamber is closed at either end by means of encircling packing rings.
3. A suction cleaner as claimed in claim 2, wherein said packing rings are of substantially
V-section which press between the walls of said annular chamber.
4. A suction cleaner as claimed in any one of the preceding claims, wherein communication between said pipe and said annular chamber is facilitated by a connecting bore in the wall of the suction pipe, said bore in said wall of said casing leading directly to said means.
5. A suction cleaner including a casing, a suction pipe rotatably mounted in the casing and means to indicate howfull of dust a dust receiving bag or chamber of the cleaner is, substantially as hereinbefore described with reference to the accompanying drawing.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19813147999 DE3147999A1 (en) | 1981-12-04 | 1981-12-04 | PRESSURE INQUIRY FOR VACUUM CLEANERS |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2110923A true GB2110923A (en) | 1983-06-29 |
GB2110923B GB2110923B (en) | 1984-12-05 |
Family
ID=6147867
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08230816A Expired GB2110923B (en) | 1981-12-04 | 1982-10-28 | Pressure indicating arrangement in a suction cleaner |
Country Status (8)
Country | Link |
---|---|
CH (1) | CH656521A5 (en) |
DE (1) | DE3147999A1 (en) |
ES (1) | ES276298Y (en) |
FI (1) | FI823891L (en) |
FR (1) | FR2517533B1 (en) |
GB (1) | GB2110923B (en) |
IT (1) | IT1149127B (en) |
NO (1) | NO155425C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2320419A (en) * | 1996-12-20 | 1998-06-24 | Notetry Ltd | Signalling and monitoring operating conditions of a vacuum cleaner |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9010969U1 (en) * | 1990-07-24 | 1991-11-28 | Siemens AG, 8000 München | Display device for the filling level of a filter bag used in a vacuum cleaner |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD85249A (en) * | ||||
DE6920047U (en) * | 1969-05-14 | 1970-02-05 | Miele & Cie | VACUUM CLEANER WITH FILTER FILLING DISPLAY DEVICE |
US4124916A (en) * | 1977-08-04 | 1978-11-14 | The Singer Company | Vacuum cleaner condition indicator and safety device |
-
1981
- 1981-12-04 DE DE19813147999 patent/DE3147999A1/en active Granted
-
1982
- 1982-08-09 CH CH4765/82A patent/CH656521A5/en not_active IP Right Cessation
- 1982-09-07 FR FR8215197A patent/FR2517533B1/en not_active Expired
- 1982-10-28 GB GB08230816A patent/GB2110923B/en not_active Expired
- 1982-11-12 FI FI823891A patent/FI823891L/en not_active Application Discontinuation
- 1982-12-03 ES ES1982276298U patent/ES276298Y/en not_active Expired
- 1982-12-03 NO NO824077A patent/NO155425C/en unknown
- 1982-12-03 IT IT49620/82A patent/IT1149127B/en active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2320419A (en) * | 1996-12-20 | 1998-06-24 | Notetry Ltd | Signalling and monitoring operating conditions of a vacuum cleaner |
GB2320419B (en) * | 1996-12-20 | 2000-08-16 | Notetry Ltd | Improved vacuum cleaner |
US6167588B1 (en) | 1996-12-20 | 2001-01-02 | Notetry Limited | Vacuum cleaner with filter clogging indicating means |
Also Published As
Publication number | Publication date |
---|---|
IT1149127B (en) | 1986-12-03 |
IT8249620A0 (en) | 1982-12-03 |
DE3147999C2 (en) | 1989-06-22 |
DE3147999A1 (en) | 1983-06-16 |
FR2517533B1 (en) | 1986-08-14 |
NO155425B (en) | 1986-12-22 |
ES276298U (en) | 1984-05-01 |
NO824077L (en) | 1983-06-06 |
NO155425C (en) | 1987-04-01 |
GB2110923B (en) | 1984-12-05 |
CH656521A5 (en) | 1986-07-15 |
FI823891A0 (en) | 1982-11-12 |
FR2517533A1 (en) | 1983-06-10 |
ES276298Y (en) | 1984-12-16 |
FI823891L (en) | 1983-06-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19971028 |