Expansion valve connector
By expanding the inner cavity and adding inner fins at the bottom of the inlet of the expansion valve joint, the problems of low space utilization and poor heat exchange performance of existing battery coolers are solved, and more efficient heat dissipation and space utilization are achieved.
Patent Information
- Application Number
- CN202421668857.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-15
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-07-15
Smart Images
Figure CN222849526U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a battery thermal management component of a pure electric or hybrid vehicle, in particular to an expansion valve joint. Background Art
[0002] Pure electric or hybrid vehicles use power batteries as driving force. The temperature of the power batteries rises during operation, and a medium is needed to cool the power batteries. Power batteries may suffer from a variety of adverse effects in high temperature environments. Long-term exposure to high temperatures will accelerate the chemical reactions inside the battery, reduce battery capacity, accelerate aging, and thus shorten the battery life. High temperatures can even increase the rate of exothermic reactions and may eventually cause thermal runaway. At this time, a battery cooler is needed to cool the power battery. General water-cooled battery coolers have low space utilization, low heat exchange performance, and poor temperature control in a limited space. Summary of the invention
[0003] The utility model aims to provide an expansion valve joint, which increases the heat exchange area by enlarging the inner cavity and adding inner fins at the inlet bottom flow channel of the expansion valve joint, thereby improving the heat dissipation performance.
[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an expansion valve joint, wherein an enlarged inner cavity and inner fins are provided at the bottom of the inlet flow channel.
[0005] The inner fins are in a square wave staggered tooth shape or a triangular wave open window shape.
[0006] The inner cavity top view projection area of the enlarged inner cavity is 8 to 12 times larger than the projection area of the inlet flow channel diameter.
[0007] The expansion valve joint body, the inner fins and the core body are assembled and brazed into a whole.
[0008] The outstanding effects of the utility model are:
[0009] By expanding the inner cavity and adding inner fins at the bottom flow channel of the inlet of the expansion valve joint, the contact area between the coolant and the inner fins is increased, the heat exchange area is increased, which is conducive to the phase change of the refrigerant to absorb the heat of the first layer of antifreeze liquid, thereby improving the heat dissipation performance and space utilization. It also has the advantages of simple and reasonable structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a structural bottom view of the expansion valve joint with inner fins described in the utility model.
[0011] Figure 2 It is a schematic diagram of the inner fin structure of the utility model.
[0012] Figure 3It is a three-dimensional schematic diagram of the structure of the expansion valve joint with inner fins described in the utility model.
[0013] Marked in the figure are: expansion valve joint body 1, inner fin 2, core 3, enlarged inner cavity 4, inlet flow channel 5. DETAILED DESCRIPTION
[0014] The technical structure of the present invention is further described in detail below through the accompanying drawings and embodiments.
[0015] like Figures 1 to 3 As shown, the expansion valve joint with inner fins described in the utility model comprises an expansion valve joint body 1, an inner fin 2, a core 3, an inner cavity 4 and an inlet flow channel 5. The structure and connection relationship of the components are as follows: the bottom of the inlet side of the expansion valve joint body 1 is provided with an enlarged inner cavity 4, and the top view projection area of the enlarged inner cavity 4 is 8 to 12 times larger than the projection area of the diameter of the inlet flow channel 5. In this embodiment, the top view projection area of the diameter of the inlet flow channel 5 is 68 mm. 2 , the top view projection area of the inner cavity 4 is enlarged to 612~884mm 2 The inner fin 2 is formed into a square wave staggered tooth shape or a triangular wave window shape by stamping or rolling. The expansion valve joint body 1 is assembled with the inner fin 2 and the core body 3 and then welded into a whole by a brazing furnace.
[0016] Working principle and process:
[0017] The utility model sets an enlarged inner cavity 4 at the bottom of the inlet side of the expansion valve joint body 1, and adds inner fins in the enlarged inner cavity 4. When the coolant passes through the flow channel between the core and the expansion valve, the inner fins increase the heat exchange area, and the fluid can form a violent disturbance during the heat exchange, which can continuously break the boundary layer and regenerate, so that the thermal resistance can be reduced, thereby increasing the heat dissipation efficiency. At the same time, the first layer of the core from the joint down is the antifreeze layer, and the inner fins are placed on the refrigerant inlet side, which is conducive to the phase change of the refrigerant to absorb the heat of the first antifreeze layer.
Claims
1. An expansion valve joint, characterized in that: The constituent components include an expansion valve joint body, inner fins, a core body, an enlarged inner cavity and an inlet flow channel. The inlet side bottom of the expansion valve joint body is provided with an enlarged inner cavity and inner fins. The inner fins are in a square wave staggered tooth shape or a triangular wave window shape. The inner cavity projection area of the enlarged inner cavity when viewed from above is 8 to 12 times larger than the projection area of the inlet flow channel diameter. The expansion valve joint body, the inner fins and the core body are assembled and brazed into a whole.