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US 2010/0059603 A1Published application
High-pressure cleaning appliance
AssigneeAlfred Kaercher GmbH & Co. KG
InventorsWolfgang Mueller, Sven Dirnberger, Bernd Koerner
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AssigneeAlfred Kaercher GmbH & Co. KG
InventorsWolfgang Mueller, Sven Dirnberger, Bernd Koerner
Estimating the term…
The invention relates to a high-pressure cleaning appliance with a high-pressure pump, comprising at least one pump chamber which is connected to a suction line and a pressure line. The pressure line is in flow connection with the suction line via a return flow line, and a relief valve with a through-channel extending from a valve inlet to a first valve outlet is arranged in the return flow line. A valve element which in a closed position bears against a valve seat is held for movement in the through-channel. At least one outlet channel, which opens into a second valve outlet, branches off from the through-channel. To design the high-pressure cleaning appliance so that it is less susceptible to failure, it is proposed that in the direction away from the valve seat, at a spacing from the at least one outlet channel, the valve element be surrounded by a sealing ring which seals off an inlet area of the through-channel adjacent to the valve inlet from an outlet area of the through-channel adjacent to the first valve outlet.
High-pressure cleaning appliance with a high-pressure pump, comprising at least one pump chamber which is connected to a suction line and a pressure line, the pressure line being in flow connection with the suction line via a return flow line, and a relief valve being arranged in the return flow line, the relief valve having a through-channel, which extends from a valve inlet to a first valve outlet, and which forms a valve seat, at least one outlet channel, which opens into a second valve outlet, branching off from the through-channel downstream of the valve seat, and a valve element adapted to be positioned by a return spring in a sealing manner against the valve seat being held for movement in the through-channel, wherein in the direction away from the valve seat, at a spacing from the at least one outlet channel, the valve element is surrounded by a sealing ring which seals off an inlet area of the through-channel adjacent to the valve inlet from an outlet area of the through-channel adjacent to the first valve outlet.
Dependencies are inferred from the claim text.