Pump motor and washing machine having the same

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Pump motors in household appliances that use water, such as washing machines, are prone to moisture ingress, leading to short-circuiting and tracking phenomena, which can result in fires due to electrical connections being compromised by moisture.

Innovation Solution

A pump motor design that includes a case with a socket part and a detachable cover part, featuring a moisture blocking member along the edge of the socket part and barriers between terminals, along with drain holes to prevent moisture ingress and facilitate its discharge, thereby preventing tracking and potential fires.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the pump motor is provided inside the household appliance using water, then the appliance can discharge used water effectively, but moisture may be introduced into the terminal part causing short-circuiting or tracking phenomenon

Engineering Contradiction:

Improvewater discharge capabilityVSAvoidelectrical connection safety

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The socket part is divided into a body part and a cover part that can be detachably coupled. The cover part can be opened to access the terminal part for wiring and closed to protect the terminal part from moisture. This segmentation allows the terminal part to be accessible when needed while protected during operation, resolving the contradiction between productivity and reliability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A moisture blocking member is introduced as an intermediary element between the case and the cover part. This moisture blocking member protrudes from the body part and blocks the gap between the case and the cover part, preventing moisture from reaching the terminal part while allowing the cover part to be opened and closed for maintenance access.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If the cover part is detachably coupled to allow opening and closing, then the terminal part is accessible for wiring, but a gap may form allowing moisture to enter

Engineering Contradiction:

Improveterminal access for wiringVSAvoidmoisture ingress through gap

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The moisture blocking member is pre-installed on the body part of the socket part before the cover part is coupled. This preliminary action ensures that when the cover part is closed, the moisture blocking member is already in position to block the gap between the case and the cover part, preventing moisture ingress while maintaining ease of operation for wiring access.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS11466392B2Pump motor and washing machine having the same

Publication Date: 2022.10.11 SAMSUNG ELECTRONICS CO LTD

AI summary

A pump motor is disclosed. The pump motor includes a case; a socket part disposed in a portion of the case and provided with a terminal part thereinside; and a cover part detachably coupled to the case and configured to open and close the socket part, wherein the socket part includes a moisture blocking member configured to block a gap between the case and the cover part.