IPC分类号：
D06F39/08 | A47L15/42
当前申请(专利权)人：
E.G.O. ELEKTRO-GERÄTEBAU GMBH
原始申请(专利权)人：
E.G.O. ELEKTRO-GERÄTEBAU GMBH
当前申请(专利权)人地址：
Blanc-und-Fischer-Platz 1-3, Oberderdingen, DE
发明人：
SCHMIDT, KAY | GRAULI, SARAH
代理机构：
PATENTANWÄLTE RUFF, WILHELM, BEIER, DAUSTER & PARTNER MBB
摘要：
The invention relates to a diverter system (2) for a fluid-bearing household appliance (1) comprising a supply path (23), a first discharge path (24), a second discharge path (25), and a fluid diverter (20) with a moveable fluid distribution element (200), wherein the moveable fluid distribution element (200) is moveable for selectively connecting the supply path (23) to one of the first discharge path (24) and the second discharge path (25) in a flow direction, and wherein a low pressure barrier device (21) having an inlet side (210) and an outlet side (212) downstream of the inlet side (210) in the flow direction is provided in the first discharge path (24), which low pressure barrier device (21) is configured to prevent fluid flow from the inlet side (210) to the outlet side (212) when a pressure differential between the inlet side (210) and the outlet side (212) is below a cracking pressure..
技术问题语段：
This makes a fluid tight sealing of a discharge path of the fluid diverter impossible.
技术功效语段：
[0008]According to a first aspect, a diverter system for a fluid-bearing household appliance comprising a supply path, a first discharge path, a second discharge path, and a fluid diverter with a moveable fluid distribution element, is provided, wherein the moveable fluid distribution element is moveable for selectively connecting the supply path to one of the first discharge path and the second discharge path in a flow direction, and wherein a low pressure barrier device having an inlet side and an outlet side downstream of the inlet side in the flow direction is provided in the first discharge path, which is configured to prevent fluid flow from the inlet side to the outlet side when a pressure differential between the inlet side and the outlet side is below a cracking pressure.
[0011]By arranging the low pressure barrier device in the first discharge path, a leakage flow to the first discharge path can be tolerated when disconnecting the first discharge path from the supply path via the flow diverter. This allows for example to connect the first discharge path to a drain hose, wherein during a use of the fluid-bearing household appliance, a fluid loss due to a leakage flow towards the drain hose is avoided. In embodiments of the diverter system, the low pressure barrier device is arranged inside a connecting piece of a housing of the fluid diverter. In other embodiments, the low pressure barrier device is connected to a connecting piece of the fluid diverter, either directly or indirectly via a duct element.
[0022]In one embodiment, the low pressure barrier device and the fluid diverter are housed in a common housing. The housing allows for a simple installation and/or an installation in a limited space.
[0027]In an advantageous embodiment, the first discharge path is connected to a drain hose. Due to the low pressure barrier device, a leakage flow of the fluid during an operation of the household appliance can be avoided.
[0029]Generally, any fluid-bearing household appliance could be equipped with the diverter system. The use of the diverter system is in particular advantageous in a household appliance having a circulating fluid, which is recurringly discarded, for example after each operation or after several operations, for example a dishwasher, a washing machine or a steam oven.
权利要求：
1. A diverter system for a fluid-bearing household appliance (1) comprising a supply path (23), a first discharge path (24), a second discharge path (25), and a fluid diverter (20) with a moveable fluid distribution element (200), wherein the moveable fluid distribution element (200) is moveable for selectively connecting the supply path (23) to one of the first discharge path (24) and the second discharge path (25) in a flow direction, characterized in that a low pressure barrier device (21) having an inlet side (210) and an outlet side (212) downstream of the inlet side (210) in the flow direction is provided in the first discharge path (24), which is configured to prevent fluid flow from the inlet side (210) to the outlet side (212) when a pressure differential between the inlet side (210) and the outlet side (212) is below a cracking pressure.
2. The diverter system according to claim 1, characterized in that the low pressure barrier device (21) comprises a closing element (213), a seat (214), and a return element (215), in particular a resilient return element, wherein the closing element (213) is arranged displaceable between a closing position, in which the closing element (213) contacts the seat (214) to prevent fluid flow from the inlet side (210) to the outlet side (212), and an opening position, in which fluid can flow from the inlet side (210) to the outlet side (212), wherein the closing element (213) is moveable against a force applied by the return element (215) from the closing position into the opening position, and wherein the return element (215) is configured to force the closing element (213) against the seat (214) and to return the closing element (213) into the closing position when a pressure differential between the inlet side (210) and the outlet side (212) is below the cracking pressure.
3. The diverter system according to claim 2, characterized in that the closing element (213) is structured as a sphere, hemisphere or drop-shaped element.
4. The diverter system according to claim 2 or 3, characterized in that the return element (215) is an elastic band, wherein the elastic band is fixed to the first discharge path (24) at the inlet side (210) of the low pressure barrier device (21).
5. The diverter system according to any one of claims 2 to 4, characterized in that the return element (215) and the closing element (213) are formed as a single piece.
6. The diverter system according to any one of claims 2 to 5, characterized in that the low pressure barrier device (21) is horizontally arranged in order to prevent a movement of the closing element (213) into the opening position due to gravitational forces.
7. The diverter system according to any one of claims 1 to 6, characterized in that the low pressure barrier device (21) is arranged adjacent to the fluid diverter (20).
8. The diverter system according to any one of claims 1 to 7, characterized in that the low pressure barrier device (21) and the fluid diverter (20) are housed in a common housing (4).
9. The diverter system according to any one of claims 1 to 8, characterized in that the moveable fluid distribution element (200) is a rotatable disc with a passage channel, wherein by rotating the rotatable disc the passage channel can be selectively arranged upfront of one of first discharge path (24) and the second discharge path (25).
10. The diverter system according to any one of claims 1 to 9, characterized in that the second discharge path (25) is fluidly connectable via an operating chamber (11) of the household appliance (1) to the supply path (23).
11. The diverter system according to any one of claims 1 to 10, characterized in that the diverter system (2) further comprises a pump (22), which pump is arranged in or upstream of the supply path (23).
12. A fluid-bearing household appliance comprising the diverter system (2) according to any one of claims 1 to 11.
13. The fluid-bearing household appliance according to claim 12, characterized in that the first discharge path (23) is connected to a drain hose (3).
14. The fluid-bearing household appliance according to claim 12 or 13 further comprising an operating chamber (11), wherein the second discharge path (25) is fluidly connected via the operating chamber (11) to the supply path (23).
15. The fluid-bearing household appliance according to any one of claims 11 to 14, wherein the fluid-bearing household appliance is a dishwasher, a washing machine or a steam oven.