| 主权项 |
1. 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 being in flow connection with the suction line via a return flow line, and a relief valve in the return flow line, the relief valve comprising:
a through-channel extending from a valve inlet to a first valve outlet and forming a valve seat, said first valve outlet forming a leakage opening,at least one outlet channel, which opens into a second valve outlet, branching off from the through-channel downstream of the valve seat,a valve element adapted to be positioned by a return spring in a sealing manner against the valve seat, said valve element being held for movement in the through-channel, wherein:
in a direction away from the valve seat, at a distance downstream from the at least one outlet channel, the valve element is surrounded by a first sealing ring which seals off communication between the valve inlet and the first valve outlet,the valve element comprises a closure member which is adapted to be positioned in a sealing manner against the valve seat and a pressure member which is surrounded by the first sealing ring at a spacing from the closure member,the relief valve comprises a first housing part connectable to a second housing part via a second sealing ring disposed therebetween,the second housing part comprises a cup-shaped insert that defines a channel-section of the through-channel and enters the first housing part,the pressure-member extends from the closure member into an area of said channel-section in which the pressure member is surrounded in a circumferential direction by the first sealing ring,a stop is associated with the valve element and the valve element bears on the stop when the relief valve is in an open position, andthe stop is formed by a stepped narrowing of the through-channel. |
