Dishwasher Sump Motor Layout for More Washing Tub Space
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Solution Overview
Problem
Conventional dish washing machines have a heightened sump and pump motor assembly, which reduces the space available in the washing tub, limiting spatial utilization.
Innovation Solution
The design incorporates a pump motor receiving part at the bottom of the sump housing, allowing the pump motor to be mounted in a way that reduces the overall height of the sump and pump motor assembly, thereby increasing the space within the washing tub, along with a heater surrounding the sump and a mesh filter to separate dirt from wash water.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the heater is mounted in the sump housing and the pump motor is mounted at the bottom of the sump housing, then the heating and pumping functions are achieved, but the height of the sump and pump motor assembly is increased, reducing the washing tub space
Solution Approach 1:
The pump motor is nested within the sump housing structure. The pump motor receiving part is formed at the bottom of the sump housing, allowing the pump motor to be inserted into and mounted to the pump motor receiving part, with the pump motor surrounded by the drainage pump. This nesting arrangement integrates the pump motor into the existing sump housing volume rather than adding external mounting space.
Solution Approach 2:
The heater is repositioned from a vertical mounting above the sump to a horizontal mounting that surrounds the sump. The heater receiving groove is formed at the bottom of the washing tub in a shape surrounding the sump, allowing the heater to be received in the groove and covered by a heater cover. This dimensional change from vertical to horizontal arrangement optimizes space utilization.
2Ease of repair
If the pump motor is mounted at the outside of the sump housing, then the pump motor is easily accessible for maintenance, but the height of the sump and pump motor assembly is increased
Solution Approach 1:
The pump motor is extracted as a separate removable component from the sump housing assembly. The pump motor receiving part includes an open lower part, through which the pump motor is inserted into and mounted to the pump motor receiving part. This extraction design allows the pump motor to be easily removed for maintenance while maintaining a compact integrated appearance during operation.
Solution Approach 2:
The pump motor mounting design allows for dynamic access - the pump motor can be easily inserted and removed through the open lower part of the pump motor receiving part. This dynamic mounting approach enables maintenance accessibility without requiring permanent external mounting that would increase assembly height.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration reduces the height of the sump and pump motor assembly, enhancing the vertical space in the washing tub and improving the machine's spatial utilization while maintaining effective wash water circulation and filtration.
Implementation Method 1
a washing impeller disposed in the sump housing to pump wash water
Implementation Method 2
a heater disposed in a shape surrounding the sump
Implementation Method 3
a pump motor surrounded by the drainage pump to drive the washing impeller
Data Source
AI summary
A dish washing machine capable of improving spatial utilization of a washing tub through the enlargement of the washing tub. The dish washing machine includes a washing tub, a sump mounted in the washing tub to receive and pump wash water, a sump housing forming an external appearance of the sump, a washing impeller to pump wash water from the sump housing, a drainage channel disposed at an inner edge of the sump housing, a pump motor surrounded by the drainage pump to drive the washing impeller, and a pump motor receiving part to receive the pump motor. The pump motor receiving part protrudes above the drainage channel.