Heat exchange structure of hydraulic retarder

Abstract

The utility model relates to a heat exchange structure of a hydraulic retarder, the heat exchange structure is composed of a plurality of groups of stacked sheets, each group of sheets is formed by stacking and welding a panel A and a panel B front and back, the surface of the panel A and the back of the panel B form a hydraulic oil channel, and the back of the panel A and the surface of the panel B form a cooling water channel. Ripples are arranged on the front and back surfaces of the panel A and the panel B, a cooling water channel is arranged between the high ripples of the panel A and the panel B, and a hydraulic oil channel is arranged between the low ripples of the panel A and the panel B. The heat exchange mechanism provided by the utility model is replaced by the existing heat exchange mechanism formed by directly pressing the plate sheets, and is convenient to manufacture and lower in cost. High and low corrugations are arranged on the sheet at intervals, grooves are formed in the high corrugations, cooling water has a larger channel, and the flow speed of the cooling water can be increased; convex points are additionally arranged on the low corrugations, hydraulic oil has smaller channels, the flow speed of the hydraulic oil can be slowed down, and the heat exchange effect of cooling water on the hydraulic oil is improved.

Description

Technical Field

[0001] The utility model relates to a heat exchange structure of a hydraulic retarder. Background Art

[0002] A hydraulic retarder, also known as a hydraulic deceleration device, is a device used to reduce the speed of a vehicle. When descending long slopes, the exhaust brake is limited in effectiveness for larger vehicles and can cause some damage to the engine. Therefore, these large vehicles often require a hydraulic retarder when navigating mountain roads. The retarder is installed in the engine's transmission. Because the hydraulic oil passing through the retarder is high-temperature, it must be cooled to ensure proper operation. Therefore, a heat exchange mechanism is installed in the retarder to cool the hydraulic oil.

[0003] As the instruction manual Figures 3 to 5 The heat exchange structure of a conventional hydraulic retarder consists of a flat plate thermally laminated with a honeycomb mesh, forming side A for the hydraulic oil. Another plate is welded with C-shaped sheets to form multiple pipes, serving as side B for the cooling water. The edges of sides A and B are pressed together, covered with copper foil, and then welded together to form the heat exchange structure. This allows the hydraulic oil to flow only through the dense mesh, slowly through side A, ensuring sufficient heat exchange. Cooling water can flow quickly through the pipes through side B, achieving a faster flow rate without prolonged water retention in the channel, which would increase the water temperature and reduce heat exchange efficiency.

[0004] While the traditional heat exchange structure of a hydraulic retarder can cool the hydraulic oil, it also has drawbacks. The original heat exchange mechanism consisted of multiple layers welded together with A and B surfaces. Each layer required two flat plates: one with a composite metal mesh and the other with a C-shaped sheet welded to it, which also needed to be covered with copper foil. This heat exchange mechanism was not only inconvenient to manufacture but also very costly. Summary of the Invention

[0005] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide a heat exchange structure of a hydraulic retarder that is easy to manufacture and has low cost.

[0006] The purpose of this utility model is achieved in this way:

[0007] A heat exchange structure for a hydraulic retarder comprises a plurality of stacked plates, each of which is formed by welding plate A and plate B stacked front and back together. The surface of plate A and the back of plate B form a hydraulic oil channel, while the back of plate A and the surface of plate B form a cooling water channel. Corrugations are provided on the front and back surfaces of plate A and plate B. The cooling water channel is formed between the high corrugations of plate A and plate B, and the hydraulic oil channel is formed between the low corrugations of plate A and plate B.

[0008] On the same side of the plate, the corrugations are arranged alternately with high and low corrugations, forming high corrugations and low corrugations arranged alternately.

[0009] Grooves are provided on the high corrugations, and convex points can be added on the low corrugations.

[0010] With the diagonal line of the plate as the center line, herringbone corrugations are arranged on both sides of the center line, and the herringbone corrugations are opened obliquely.

[0011] The heat exchange structure of the hydraulic retarder of the utility model has the following advantages:

[0012] The utility model provides a heat exchange structure for a hydraulic retarder, which replaces the original flat composite honeycomb net and the plate structure with grooves in the flat plate into a current heat exchange mechanism of a plate combination directly pressed out, which is not only convenient to manufacture but also low in cost.

[0013] The plate connects the two diagonal medium holes as the center line, and herringbone corrugations are arranged on both sides of the center line. After the herringbone corrugations are opened obliquely, the flow direction of the cooling water intersects with the flow direction of the hydraulic oil, thereby increasing the heat exchange effect of the medium.

[0014] High and low corrugations are arranged at intervals on the plate, and grooves can be opened on the high corrugations, so that the cooling water has a larger channel, which can increase the flow rate of the cooling water; convex points can also be added on the low corrugations, so that the hydraulic oil has a smaller channel, which can slow down the flow rate of the hydraulic oil and improve the heat exchange effect of the cooling water on it. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of panel A in the heat exchange device of the hydraulic retarder of the present invention.

[0016] Figure 2 This is a schematic diagram of the B panel in the heat exchange device of the hydraulic retarder of the present invention.

[0017] Figure 3 This is a schematic diagram of a heat exchange device for a conventional hydraulic retarder.

[0018] Figure 4 This is a schematic diagram of the A-side structure of the heat exchange device of a conventional hydraulic retarder.

[0019] Figure 5 This is a schematic diagram of the B-side structure of the heat exchange device of a conventional hydraulic retarder.

[0020] In the figure: plate 1, panel A 2, panel B 3, corrugation 4, high corrugation 5, low corrugation 6, groove 7, protrusion 8, herringbone corrugation 9. DETAILED DESCRIPTION

[0021] See also Figure 1 and Figure 2The utility model relates to a heat exchange structure of a hydraulic retarder, which is installed on the hydraulic retarder of a vehicle engine transmission.

[0022] The heat exchange structure is composed of multiple groups of stacked plates 1, each group of plates 1 is formed by front-to-back stacking and welding of A plate 2 and B plate 3, and corrugations 4 are provided on the front and back surfaces of the A plate 2 and the B plate 3.

[0023] The surface of the A panel piece 2 and the back surface of the B panel piece 3 form a hydraulic oil channel, and the back surface of the A panel piece 2 and the surface of the B panel piece 3 form a cooling water channel.

[0024] Furthermore, the corrugations 4 on the plate 1 can be specially designed. On the same side of the plate 1, the corrugations 4 are arranged in alternating patterns of high and low, forming high corrugations 5 and low corrugations 6 spaced one behind the other. The cooling water channel is located between the high corrugations 5 of the A-panel 2 and the B-panel 3, providing a larger channel for the cooling water and increasing its flow rate. The hydraulic oil channel is located between the low corrugations 6 of the A-panel 2 and the B-panel 3. The hydraulic oil flows slowly through the channel, creating turbulence that slows the flow of the hydraulic oil and improves the heat exchange effect of the cooling water on it.

[0025] In addition, grooves 7 can be provided on the high corrugations 5 to further increase the flow rate of the cooling water; and convex points 8 can be provided on the low corrugations 6 to further reduce the passage of the hydraulic oil, thereby improving the heat exchange effect of the heat exchange structure.

[0026] In addition, the corrugations 4 on the plate 1 can be specially designed. The plate 1 uses the two diagonal medium holes as hydraulic oil through holes, and the line connecting the two diagonal medium holes is the center line. Herringbone corrugations 9 are arranged on both sides of the center line. After the herringbone corrugations 9 are opened obliquely, the flow direction of the cooling water intersects with the flow direction of the hydraulic oil, thereby increasing the heat exchange effect of the medium.

Claims

1. A heat exchange structure of a hydraulic retarder, characterized by: The heat exchange mechanism is composed of multiple groups of stacked plates. Each group of plates is made of panel A and panel B stacked and welded together. The surface of panel A and the back of panel B form a hydraulic oil channel, and the back of panel A and the surface of panel B form a cooling water channel. Corrugations are set on the front and back of panel A and panel B. The cooling water channel is between the high corrugations of panel A and panel B, and the hydraulic oil channel is between the low corrugations of panel A and panel B.

2. The heat exchange structure of a hydraulic retarder according to claim 1, characterized in that: On the same side of the plate, the corrugations are arranged alternately with high and low corrugations, forming high corrugations and low corrugations arranged alternately.

3. The heat exchange structure of a hydraulic retarder according to claim 2, characterized in that: The plate has a center line connecting two diagonal medium holes, and herringbone corrugations are arranged on both sides of the center line, and the herringbone corrugations are opened obliquely.

4. The heat exchange structure of a hydraulic retarder according to claim 2, characterized in that: Grooves are provided on the high corrugations, and convex points can be added on the low corrugations.

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