Plate-type heat exchanger
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Solution Overview
Problem
Existing plate-type heat exchangers used as internal heat exchangers in vehicle air conditioning systems face challenges in adjusting performance to prevent excessive cooling performance that can raise the operating temperature of the compressor, leading to durability issues.
Innovation Solution
The plate-type heat exchanger incorporates a dead zone by strategically arranging flow ports or using barriers to restrict medium flow, thereby adjusting performance and preventing excessive heat exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the plate-type heat exchanger is designed with high heat exchange performance, then cooling performance is improved, but compressor operating temperature rises excessively leading to durability issues
Solution Approach 1:
The patent applies local quality by creating a dead zone with different flow characteristics in a specific region of the heat exchanger plate. This dead zone, formed by strategic flow port arrangement or barriers, restricts medium flow locally to reduce heat exchange performance in that area, thereby controlling the temperature rise of the compressor while maintaining overall cooling effectiveness.
Solution Approach 2:
The patent uses partial action by intentionally creating a dead zone that restricts flow in a partial region rather than uniformly across the entire heat exchanger. This selective flow restriction allows the system to achieve moderate heat exchange performance that prevents compressor overheating while still providing adequate cooling function.
2Area of stationary object
If flow ports are arranged to maximize heat exchange area, then heat exchange performance increases, but compressor temperature control becomes difficult
Solution Approach 1:
The patent resolves this contradiction by applying local quality through the dead zone design. While the overall heat exchange area is maintained through plate stacking, a specific local region is designated as a dead zone with restricted flow. This creates spatial differentiation in flow characteristics, allowing high heat exchange area utilization while controlling compressor temperature through localized flow restriction.
3Productivity
If the heat exchanger performance is increased to improve cooling, then cooling efficiency improves, but system stability deteriorates due to compressor temperature issues
Solution Approach 1:
The patent applies partial action by implementing a dead zone that restricts flow in a controlled manner rather than uniformly reducing performance across the entire system. This selective flow restriction allows the heat exchanger to maintain adequate cooling efficiency while preventing excessive compressor temperature rise, thereby preserving system stability.
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 design effectively reduces heat exchange performance to prevent compressor temperature rise, enhancing system durability and operational stability.
Implementation Method 1
a first medium space through which a first medium flows, and a second medium space through which a second medium flows... allow the heat exchange medium to perform heat exchange while flowing in the tube
Data Source
AI summary
The present invention relates to a plate-type heat exchanger. An object of the present invention is to provide a plate-type heat exchanger used as an internal heat exchanger in which a dead zone is intentionally formed by changing an arrangement of flow ports or additionally installing a barrier to adjust performance in order to prevent a problem in which an operating temperature of a compressor is raised and durability is degraded because of excessive performance of the internal heat exchanger.