Heat exchange device of hydraulic retarder
By adopting a heat exchange device with a stacked plate structure and a herringbone corrugated design, the problems of complex production and high cost of the hydraulic retarder heat exchange device are solved, and a low-cost and high-efficiency heat exchange effect is achieved.
Patent Information
- Application Number
- CN202422913481.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-11-28
AI Technical Summary
The heat exchange device of the existing hydraulic retarder is inconvenient to produce and has high cost, and the traditional welding structure is complex, resulting in low production efficiency and high cost.
A heat exchange device consisting of multiple groups of stacked plates is used. Each group of plates is welded together by A and B panels stacked front and back. Panels A and B form hydraulic oil and cooling water channels. Herringbone corrugations are set on the surface of the plates to increase flow rate and flow effect.
The heat exchange effect is achieved with simple production and low cost, while the flow rate of cooling water and the flow turbulence of hydraulic oil are increased, thereby enhancing the heat exchange efficiency.
Smart Images
Figure CN223484921U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a heat exchange device for a hydraulic retarder. Background Technology
[0002] A hydraulic retarder, also known as a hydraulic deceleration device, is used in large vehicles or trucks descending long slopes where exhaust braking is limited and can damage the engine. Therefore, these large vehicles typically require a hydraulic retarder when driving on mountain roads. The hydraulic retarder is mounted on the engine's transmission. Because the hydraulic oil passing through the retarder is high-temperature oil, it needs to be cooled to ensure proper operation. Therefore, a heat exchanger is installed on the hydraulic retarder to cool the hydraulic oil.
[0003] As per the instruction manual Figures 4 to 6 Traditionally, the heat exchange device of a hydraulic retarder consists of a honeycomb mesh thermally laminated onto a flat plate, serving as the A-side for hydraulic oil flow; and another plate with C-shaped plates welded on to form multiple pipes, serving as the B-side for cooling water flow. The edges of the A and B sides are pressed together and covered with copper foil before welding to form the heat exchange mechanism. This design allows the hydraulic oil to pass through the dense mesh on the A-side at a slower speed, ensuring sufficient heat exchange; while the cooling water can quickly pass through the pipes on the B-side at a faster speed, preventing prolonged water stagnation that could lead to increased water temperature and reduced heat exchange efficiency.
[0004] Although traditional hydraulic retarder heat exchange mechanisms can cool hydraulic oil, they also have many drawbacks:
[0005] 1. The original heat exchange mechanism was made of multiple layers of A and B surfaces welded together. Each layer required two flat plates, one with a metal mesh on the surface and the other with a C-shaped plate welded on the surface, and copper foil also needed to be covered. The heat exchange mechanism made in this way was not only inconvenient to produce, but also had a high cost. Summary of the Invention
[0006] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a heat exchange device for a hydraulic retarder that is easy to manufacture and has a low cost.
[0007] The purpose of this utility model is achieved as follows:
[0008] The heat exchange device of the hydraulic retarder consists of multiple stacked plates. Each plate is formed by stacking and welding A plate and B plate one after the other. The surface of A plate and the back of B plate form a hydraulic oil channel, and the back of A plate and the surface of B plate form a cooling water channel. Corrugations are provided on both the front and back of A plate and B plate.
[0009] On the same side of the plate, the corrugations are arranged with high and low corrugations at intervals, forming a series of high and low corrugations.
[0010] The area between the high corrugations of panel A and panel B is a cooling water channel, while the area between the low corrugations of panel A and panel B is a hydraulic oil channel.
[0011] The ripples are herringbone ripples.
[0012] The heat exchange device of this hydraulic retarder has the following advantages:
[0013] The heat exchange device of this utility model hydraulic retarder replaces the original flat composite honeycomb mesh and plate structure with grooved plates with a heat exchange device composed of directly pressed plates, which is not only easier to manufacture but also lower in cost.
[0014] The plates are arranged with alternating high and low corrugations, providing larger channels for cooling water and increasing its flow rate; the hydraulic oil has smaller channels, resulting in a slower flow rate and creating turbulence, which improves the heat exchange effect of the cooling water. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of panel A in the heat exchange device of the hydraulic retarder of this utility model.
[0016] Figure 2 This is a schematic diagram of panel B in the heat exchange device of the hydraulic retarder of this utility model.
[0017] Figure 3 This is a magnified view of the corrugations on the plate.
[0018] Figure 4 This is a schematic diagram of the heat exchange device of a conventional hydraulic retarder.
[0019] Figure 5 This is a schematic diagram of the A-side structure of the heat exchange device in a conventional hydraulic retarder.
[0020] Figure 6 This is a schematic diagram of the B-side structure of the heat exchange device in a conventional hydraulic retarder.
[0021] In the diagram: Plate 1, A-panel plate 2, B-panel plate 3, Corrugated plate 4. Detailed Implementation
[0022] See Figures 1 to 3 This utility model relates to a heat exchange device for a hydraulic retarder, which is installed on the hydraulic retarder of a vehicle engine transmission.
[0023] The heat exchange device consists of multiple stacked plates 1. Each plate 1 is formed by stacking and welding A panel plate 2 and B panel plate 3 one after the other. Corrugations 4 are provided on both the front and back sides of A panel plate 2 and B panel plate 3. The corrugations are herringbone corrugations.
[0024] The surface of panel 2 and the back of panel 3 form a hydraulic oil channel, and the back of panel 2 and the surface of panel 3 form a cooling water channel.
[0025] Furthermore, the corrugations 4 on plate 1 can be specially designed. On the same side of plate 1, the corrugations 4 are arranged with alternating high and low corrugations, forming a series of alternating high and low corrugations. The area between the high corrugations of panel 2 and panel 3 is a cooling water channel, which provides a larger channel for the cooling water and increases its flow rate. The area between the low corrugations of panel 2 and panel 3 is a hydraulic oil channel, where the hydraulic oil flows at a slower speed, creating turbulence and improving the heat exchange effect of the cooling water.
Claims
1. A heat exchange device for a hydraulic retarder, characterized in that: The heat exchange device consists of multiple stacked plates. Each plate is formed by stacking and welding A plate and B plate one after the other. The surface of A plate and the back of B plate form a hydraulic oil channel, and the back of A plate and the surface of B plate form a cooling water channel. Corrugations are provided on both the front and back of A plate and B plate.
2. The heat exchange device for the hydraulic retarder according to claim 1, characterized in that: On the same side of the plate, the corrugations are arranged with high and low corrugations at intervals, forming a series of high and low corrugations.
3. The heat exchange device for the hydraulic retarder according to claim 2, characterized in that: The area between the high corrugations of panel A and panel B is a cooling water channel, while the area between the low corrugations of panel A and panel B is a hydraulic oil channel.
4. The heat exchange device for the hydraulic retarder according to claim 1, characterized in that: The ripples are herringbone ripples.