IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0269652
(2011-10-10)
|
등록번호 |
US-8393048
(2013-03-12)
|
발명자
/ 주소 |
- Rentschler, Werner
- Engelhardt, Rainer
- Frank, Juergen
- Eckstein, Daniel
|
출원인 / 주소 |
- Alfred Kaercher GmbH & Co. KG
|
대리인 / 주소 |
Lipsitz & McAllister, LLC
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
40 |
초록
▼
A method for cleaning first and second filters of a suction device for cleaning purposes is provided. The suction device has a dirt collection container with a suction inlet. The dirt collection container is subjected to negative pressure via first and second suction lines, respectively, following t
A method for cleaning first and second filters of a suction device for cleaning purposes is provided. The suction device has a dirt collection container with a suction inlet. The dirt collection container is subjected to negative pressure via first and second suction lines, respectively, following the first and second filters. First and second closing valves close first and second external air inlets, respectively, into the first and second suction lines. For cleaning the filters, the closing valves are opened, subjecting the filters to external air on the clean space side. The dirt collection container is subjected to negative pressure via the first suction line and first filter by a first suction unit and via the second suction line and second filter by a second suction unit. The suction lines are sealed off relative to each other on the clean space side at least during the cleaning of the filters.
대표청구항
▼
1. Suction device for cleaning purposes, comprising: a dirt collection container, which comprises a suction inlet,a first filter arranged at a first suction outlet,a second filter arranged at a second suction outlet,a first suction line and a second suction line, respectively following the first fil
1. Suction device for cleaning purposes, comprising: a dirt collection container, which comprises a suction inlet,a first filter arranged at a first suction outlet,a second filter arranged at a second suction outlet,a first suction line and a second suction line, respectively following the first filter and the second filter, via which the dirt collection container can be subjected to negative pressure,a first external air inlet and a second external air inlet which allow external air to flow into the first suction line and into the second suction line, respectively, in order to subject the first filter and the second filter, respectively, to external air on a clean space side of the filters, anda first closing valve and a second closing valve for closing the first external air inlet and the second external air inlet, respectively,a first suction unit for subjecting the dirt collection container to the negative pressure via the first suction line and the first filter, anda second suction unit for subjecting the dirt collection container to the negative pressure via the second suction line and the second filter, andwherein: the first suction line and the second suction line are configured as suction channels that are spatially separated from each other and are sealed off relative to each other on the clean space side at least during cleaning of the first filter and the second filter,when the first closing valve is in an opened position, there is a fluid connection from the clean space side of the first filter to the first suction unit through the first suction line, andwhen the second closing valve is in an opened position, there is a fluid connection from the clean space side of the second filter to the second suction unit through the second suction line. 2. Suction device in accordance with claim 1, wherein the first suction line and the second suction line are permanently sealed off relative to each other in an area adjacent the clean space side of the filters. 3. Suction device in accordance with claim 1, further comprising a housing with a first housing part, which at least partially forms at least one of the first suction line and the second suction line. 4. Suction device in accordance with claim 1, further comprising a housing with a second housing part, which at least partially forms a wall of at least one external air channel, which opens via the first external air inlet into the first suction line. 5. Suction device in accordance with claim 1, further comprising a housing with a second housing part, which at least partially forms a wall of at least one external air channel, which opens via the second external air inlet into the second suction line. 6. Suction device in accordance with claim 1, wherein: the first closing valve has a first valve seat and a first valve body,the second closing valve has a second valve seat, and a second valve body, andthe first valve body and the second valve body are movable relative to the first valve seat and the second valve seat, respectively, and, in a closed position, sealingly engage the first valve seat and the second valve seat, respectively, and, in an open position, are lifted off from the first valve seat and from the second valve seat, respectively. 7. Suction device in accordance with claim 6, wherein: the first closing valve comprises a first restoring member,the second closing valve comprises a second restoring member, andthe first valve body and the second valve body, respectively, are transferable from the closed position to the open position counter to an action of the first restoring member and the second restoring member. 8. Suction device in accordance with claim 6, wherein: the first closing valve comprises a first electromagnet,the second closing valve comprises a second electromagnet, andby an action of the first electromagnet and the second electromagnet the first valve body and the second valve body, respectively, are held in the closed position. 9. Suction device in accordance with claim 1, further comprising a control unit in electrical connection with at least one of the first closing valve and the second closing valve, with which control unit the first closing valve and the second closing valve, respectively, are controllable. 10. Suction device in accordance with claim 1, wherein the first suction unit and the second suction unit are arranged symmetrically relative to each other on the suction device in relation to a central longitudinal plane of the suction device. 11. Suction device in accordance with claim 1, wherein the first suction line and the second suction line are arranged symmetrically relative to each other on the suction device in relation to a central longitudinal plane of the suction device. 12. Suction device in accordance with claim 1, wherein the first closing valve and the second closing valve are arranged symmetrically relative to each other on the suction device in relation to a central longitudinal plane of the suction device. 13. Suction device in accordance with claim 9, wherein the control unit actuates the first closing valve and the second closing valve at different points in time. 14. Suction device in accordance with claim 9, wherein the control unit controls the first closing valve and the second closing valve such that the first closing valve and the second closing valve are not open at the same point in time. 15. Suction device in accordance with claim 9, wherein the control unit actuates at least one of the first closing valve and the second closing valve at prescribable intervals. 16. Suction device in accordance with claim 9, wherein the control unit controls at least one of the first closing valve and the second closing valve such that the at least one of the first closing valve and the second closing valve is opened for prescribable periods of time. 17. Suction device in accordance with claim 9, wherein the control unit actuates the first closing valve in dependence upon a pressure difference forming between the first suction line and the dirt collection container while the first closing valve is closed. 18. Suction device in accordance with claim 9, wherein the control unit actuates the second closing valve in dependence upon a pressure difference forming between the second suction line and the dirt collection container while the second closing valve is closed. 19. Suction device in accordance with claim 1, wherein the suction device forms part of a vacuum cleaner.
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