Heat Pump Flow Guide Design to Improve Dishwasher Heating Efficiency
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Solution Overview
Problem
Conventional heat pumps in dishwashers have low heating efficiency and high energy consumption, leading to increased total energy consumption.
Innovation Solution
A heat pump design for dishwashers that includes an upper shell with an inlet, a heating pipe, a lower shell, an impeller, and a flowing guide in the upper chamber adjacent to the heating pipe, enhancing heat exchange efficiency through the guiding effect of the flowing guide.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a conventional heat pump is used for heating in a dishwasher, then the heating function is achieved, but the heating efficiency is low and energy consumption is high
Solution Approach 1:
The flowing guide acts as an intermediary component between the water flow and the heating pipe. It redirects and concentrates the water flow to ensure complete contact with the heating pipe surface, thereby improving heat transfer efficiency and reducing energy consumption without requiring additional heating capacity.
2Device complexity
If the heating pipe is placed in the upper chamber without flow guidance, then the structure is simple, but the heat exchange efficiency is insufficient
Solution Approach 1:
The flowing guide serves as a simple intermediary structure that redirects water flow to ensure complete contact with the heating pipe. This minimal addition to the structure achieves significant improvement in heat exchange efficiency by optimizing the flow path without complicating the overall design.
Solution Approach 2:
The flowing guide creates localized flow concentration around the heating pipe, ensuring that the water flow is directed precisely where heat exchange is needed. This local optimization of flow distribution improves heat exchange efficiency without requiring changes to the entire system structure.
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
The design improves the heat exchanging efficiency of the heating pipe, reducing the total energy consumption of the dishwasher.
Implementation Method 1
flows may contact with the heating pipe and perform a complete heat exchange with the heating pipe
Implementation Method 2
the flowing guide is disposed in the upper chamber and adjacent to the heating pipe. With a guiding effect of the flowing guide, flows may contact with the heating pipe
Data Source
AI summary
A heat pump for a dishwasher includes an upper shell (10) defining an upper chamber (100) therein, a heating pipe (20) disposed in the upper chamber (100), a lower shell (30) defining a lower chamber (300) therein and detachably connected with the upper shell (10), an impeller (40) disposed in the lower chamber (300), and a flowing guide (50) disposed in the upper chamber (100) and adjacent to the heating pipe (20). The upper shell (10) includes an inlet (101) disposed in an upper end surface thereof and communicated with the upper chamber (100). A dishwasher including the heat pump is also provided. With a guiding effect of the flowing guide (50), the stream may contact with the heating pipe (20) and perform a complete heat exchange with the heating pipe (20), thus enhancing the heat exchanging efficiency of the heating pipe (20) and totally improving the heating efficiency of the heat pump.