An engineering machinery manifold type hydraulic oil cooler with good heat dissipation performance

Abstract

The utility model discloses an engineering machinery manifold type hydraulic oil cooler with good heat dissipation performance, which comprises two groups of manifold bundles, each group of manifold bundles has a plurality of chambers extending along the left-right axial length direction and arranged in parallel along the front-back horizontal direction inside, two adjacent chambers are connected through a bypass hole on the shared side wall, the two ends of the chamber are sealed, a refrigerant joint is fixed on the manifold bundle, the two groups of manifold bundles are connected through a plurality of rows of flat tube groups arranged longitudinally, each row of flat tube groups is vertically fixed between two corresponding chambers of the two groups of manifold bundles along the left-right axial length direction, and two adjacent flat tubes in each row of flat tube groups are fixed and connected together through fins. The number of flat tubes and the total cross-sectional area of the flat tubes are effectively increased, the total contact area between the heat exchange medium flowing in the flat tubes and the external air is significantly increased, the heat exchange effect is enhanced, and the heat dissipation performance is excellent. The overall structure is compact and reasonable, has small space occupation, is light and portable, and is economical and practical.

Description

Technical Field

[0001] This utility model relates to the technical field of cooling equipment for engineering machinery, specifically to a manifold type hydraulic oil cooler for engineering machinery with good heat dissipation performance. Background Technology

[0002] Currently, large-tonnage construction machinery vehicles on the market mostly use plate-fin hydraulic oil coolers to dissipate heat from their power equipment. The structure of existing plate-fin hydraulic oil coolers generally includes two parallel oil chambers, several parallel, spaced-apart heat dissipation flat tubes arranged between the two oil chambers, and fins welded and fixed between adjacent flat tubes. The problem with this structure is that the total cross-sectional area of ​​the hydraulic oil flow channel formed by the heat dissipation flat tubes between the two oil chambers is limited, severely restricting the cooling efficiency of the plate-fin hydraulic oil cooler. Although, under certain circumstances, the total cross-sectional area of ​​the hydraulic oil flow channel can be increased by extending the length of the two oil chambers and increasing the number of heat dissipation flat tubes, the space available for installing the cooler on construction machinery vehicles is limited, thus restricting the length of the oil chambers. Therefore, this utility model proposes a manifold-type hydraulic oil cooler for construction machinery with good heat dissipation performance to solve the above-mentioned technical problems. Summary of the Invention

[0003] The purpose of this invention is to overcome the defects in the existing technology and provide a manifold-type hydraulic oil cooler for engineering machinery with good heat dissipation performance. By setting several parallel and spaced chambers inside two sets of manifold bundles, and setting corresponding rows of flat tube groups between several pairs of corresponding chambers between the two sets of manifold bundles, this effectively increases the number of flat tubes and the total cross-sectional area of ​​the flat tubes used for the flow of heat exchange medium compared to the plate-fin type hydraulic oil cooler with a row of flat tubes between two oil chambers. This significantly increases the total contact area between the heat exchange medium flowing inside the flat tubes and the external air, enhancing the heat exchange effect and providing excellent heat dissipation performance. The overall structure is compact and reasonable, with a small space occupation, making it suitable for engineering machinery vehicles with limited installation space. It is also low in cost, lightweight, and highly practical.

[0004] To achieve the above objectives, the technical solution of this utility model is to design a manifold-type hydraulic oil cooler for engineering machinery with good heat dissipation performance. It includes two sets of manifold bundles arranged parallel to each other on the upper and lower sides. Each set of manifold bundles has several chambers extending along its left-right axial length and arranged parallel to each other in the front-back horizontal direction. Adjacent chambers within each set of manifold bundles are connected through a bypass hole on a common sidewall between them. The chambers are sealed at both ends. Each set of manifold bundles has a refrigerant connector fixedly attached to its internal chamber. The two sets of manifold bundles are connected by several rows of flat tubes arranged longitudinally between them. Each row of flat tubes is vertically fixed between two corresponding chambers on the two sets of manifold bundles along its left-right axial length. Two adjacent flat tubes on each row of flat tubes are fixedly connected together by fin welding.

[0005] This utility model discloses a manifold-type hydraulic oil cooler for engineering machinery with excellent heat dissipation performance. It effectively increases the number of flat tubes and the total cross-sectional area of ​​the flat tubes used for heat exchange medium flow by setting several parallel, spaced chambers inside two sets of manifold bundles, and by setting corresponding rows of flat tube groups between several pairs of corresponding chambers between the two sets of manifold bundles. Compared to a plate-fin type hydraulic oil cooler with only one row of flat tubes between two oil chambers, this significantly increases the total contact area between the heat exchange medium flowing through the flat tubes and the external air, enhancing the heat exchange effect and resulting in excellent heat dissipation performance. The overall structure is compact and reasonable, occupying little space, making it suitable for engineering machinery vehicles with limited installation space. Furthermore, it is low in cost, lightweight, and highly practical.

[0006] A preferred technical solution is that each group of manifolds includes a manifold body, which has several chambers inside. End caps are welded and fixed to both ends of each chamber. The left ends of two adjacent chambers inside the manifold body are connected through a bypass hole 1 on a shared sidewall between them. The right ends of two adjacent chambers inside the manifold body are connected through a bypass hole 2 on a shared sidewall between them. Both bypass holes 1 and 2 penetrate the sidewall of the manifold body opposite to the flat tube group. A refrigerant connector is welded and fixed to the outside of the sidewall of the manifold body opposite to the flat tube group, and one end of the refrigerant connector is connected to one of bypass holes 1 and 2 on the manifold body. A plug for covering the other of bypass holes 1 and 2 is also welded and fixed to the outside of the sidewall of the manifold body opposite to the flat tube group. The manifold structure is ingeniously and rationally designed, and its assembly and processing are highly feasible, ensuring the successful preparation and implementation of this utility model of manifold-type hydraulic oil cooler.

[0007] A further preferred technical solution is that the refrigerant connector on one set of the manifolds is vertically located at the left end of the manifold body, and the refrigerant connector on the other set of the manifolds is vertically located at the right end of the manifold body, with the free ends of both connectors facing forward. The refrigerant connectors on the two sets of manifolds are staggered, and their openings face the same direction, ensuring convenient connection when connecting external equipment to the two refrigerant connectors during installation and use.

[0008] A further preferred technical solution is that a plurality of mounting brackets extending away from the flat tube assembly are welded and fixed to the front side of the manifold body, and the mounting brackets have opening slots for threading bolt assemblies. When the manifold type hydraulic oil cooler of this utility model is installed and used, it is fixed to the corresponding bulkhead of the engineering machinery vehicle by bolt assemblies threaded through the opening slots on the mounting brackets. The installation method is simple, easy to operate, and highly stable.

[0009] A further preferred technical solution includes three parallel chambers inside the manifold body, and two bypass holes and two bypass holes on the manifold body. The three parallel chambers inside the manifold body achieve a three-channel oil cooler effect, providing superior cooling performance compared to single and double-channel oil coolers on the market. This meets the heat dissipation requirements of large-tonnage hydraulic systems in construction machinery, while ensuring that the overall dimensions of this manifold-type hydraulic oil cooler are reasonable, allowing for installation and use on general construction machinery vehicles, and offering good portability and flexibility.

[0010] A further preferred technical solution is that the manifold body has a connector mounting base on the side wall opposite to the flat tube assembly for welding and connecting the refrigerant connector. The connector mounting base has through holes three corresponding to the two bypass holes one or the two bypass holes two. The connector mounting base improves the convenience and firmness of welding and fixing the refrigerant connector to the manifold body.

[0011] A further preferred technical solution is that the manifold body has several rows of flat holes on one side wall facing the flat tube bundle, corresponding to and communicating with its internal chambers. The ends of several flat tubes on each row of the flat tube bundle are inserted into and welded to the corresponding flat holes. During assembly, the two ends of the flat tubes are pre-inserted into the flat holes on the two manifold bundles, and then brazed to fix the flat tubes to the two manifold bundles together, ensuring high efficiency and precise connection during assembly.

[0012] A further preferred technical solution includes two side plates. The left ends of the two sets of manifolds are welded and fixedly connected together by one of the side plates, and the right ends of the two sets of manifolds are welded and fixedly connected together by the other side plate. The side plates are welded and fixedly connected to the adjacent flat tubes by fins. The two ends of the two sets of manifolds are welded and fixedly connected together by the two side plates, forming a rectangular frame structure on the outer side. This improves the overall structural strength and rigidity of the manifold hydraulic oil cooler of this utility model. On the other hand, the rectangular frame structure on the outer side protects the flat tube group located inside, effectively preventing the flat tubes from being deformed under pressure and ensuring the smooth flow of the heat exchange medium inside the flat tubes.

[0013] The advantages and beneficial effects of this utility model are as follows:

[0014] 1. This utility model discloses a manifold-type hydraulic oil cooler for engineering machinery with good heat dissipation performance. By setting several parallel and spaced chambers inside two sets of manifold bundles, and setting corresponding rows of flat tube groups between several pairs of corresponding chambers between the two sets of manifold bundles, this effectively increases the number of flat tubes and the total cross-sectional area of ​​the flat tubes used for circulating heat exchange medium compared to the plate-fin type hydraulic oil cooler with a row of flat tubes between two oil chambers. This significantly increases the total contact area between the heat exchange medium flowing inside the flat tubes and the external air, enhancing the heat exchange effect and providing excellent heat dissipation performance. The overall structure is compact and reasonable, with a small space occupation, making it suitable for engineering machinery vehicles with limited installation space. It is also low in cost, lightweight, and highly practical.

[0015] 2. The manifold structure is ingeniously and reasonably designed, and the assembly and processing are highly feasible, ensuring that the manifold type hydraulic oil cooler of this utility model can be successfully prepared and implemented; the refrigerant connectors on the two sets of manifolds are staggered and their openings face the same direction, ensuring the convenience of docking and connection when the two refrigerant connectors are connected to external equipment during installation and use.

[0016] 3. Several mounting brackets extending away from the flat tube assembly are welded and fixed to the front side of the manifold body. The mounting brackets have opening slots for threading bolt assemblies. When installing and using the manifold type hydraulic oil cooler of this utility model, it is fixedly installed on the corresponding bulkhead of the engineering machinery vehicle by bolt assemblies threaded through the opening slots on the mounting brackets. The installation method is simple, easy to operate, and highly stable.

[0017] 4. The manifold body has three parallel chambers inside, and two bypass holes and two bypass holes on the manifold body. The three parallel chambers inside the manifold body achieve a three-channel oil cooler effect, providing superior cooling compared to single and double-channel oil coolers on the market. This meets the heat dissipation requirements of large-tonnage hydraulic systems in construction machinery, while ensuring that the overall dimensions of this manifold-type hydraulic oil cooler are reasonable, allowing for installation and use on general construction machinery vehicles, and offering good portability and flexibility.

[0018] 5. During assembly and processing, the two ends of the flat tube are pre-inserted into the flat holes on the two sets of manifolds, and then the flat tube is welded and fixed together with the two sets of manifolds by brazing, which ensures the efficiency and docking accuracy of the assembly and processing of the flat tube and the two sets of manifolds. Attached Figure Description

[0019] Figure 1 This is a perspective view (fins hidden) of a manifold-type hydraulic oil cooler for engineering machinery with good heat dissipation performance according to this utility model.

[0020] Figure 2 This is a perspective view of the upper end of the manifold type hydraulic oil cooler for engineering machinery with good heat dissipation performance according to this utility model;

[0021] Figure 3 yes Figure 2 A magnified view of a section at point H in the middle;

[0022] Figure 4 This is a split view of the upper end of the manifold type hydraulic oil cooler for engineering machinery with good heat dissipation performance (fins are hidden).

[0023] Figure 5 This is a rear-view perspective (fins hidden) of the manifold type hydraulic oil cooler for engineering machinery with good heat dissipation performance according to this utility model.

[0024] Figure 6 This is a top view of the manifold bundle;

[0025] Figure 7 yes Figure 6 Longitudinal sectional view at position AA;

[0026] Figure 8 yes Figure 6 A longitudinal sectional view at position CC.

[0027] In the diagram: 1. Manifold bundle; 2. Side plate; 3. Flat tube assembly; 4. Fin; 1-1. Manifold body; 1-1a. Chamber; 1-1b. Flat hole; 1-1c. Bypass hole one; 1-1d. Bypass hole two; 1-2. End cap; 1-3. Connector mounting base; 1-4. Refrigerant connector; 1-5. Plug; 1-6. Mounting bracket; 1-6a. Opening slot. Detailed Implementation

[0028] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0029] Example

[0030] like Figures 1-8 As shown, a manifold-type hydraulic oil cooler for engineering machinery with good heat dissipation performance includes two sets of manifold bundles 1 arranged in parallel on the upper and lower sides. Each set of manifold bundles 1 has several chambers 1-1a extending along its left-right axial length and arranged in parallel along the front-back horizontal direction. Two adjacent chambers 1-1a in each set of manifold bundles 1 are connected through a bypass hole provided on a common side wall between them. The two ends of the chambers 1-1a are sealed. Each set of manifold bundles 1 is fixed with a refrigerant connector 1-4 that communicates with its internal chambers 1-1a. The two sets of manifold bundles 1 are connected by several rows of flat tube groups 3 arranged longitudinally between them. Each row of flat tube groups 3 is vertically fixed between two corresponding chambers 1-1a on the two sets of manifold bundles 1 along its left-right axial length. Two adjacent flat tubes on each row of flat tube groups 3 are fixedly connected together by welding fins 4.

[0031] Preferably, each of the aforementioned manifold bundles 1 includes a manifold body 1-1, the manifold body 1-1 having a plurality of chambers 1-1a inside, and end caps 1-2 welded and fixed to both ends of each chamber 1-1a. The left ends of two adjacent chambers 1-1a inside the manifold body 1-1 are connected through a bypass hole 1-1c provided on their shared sidewall, and the right ends of two adjacent chambers 1-1a inside the manifold body 1-1 are connected through a bypass hole 1-1d provided on their shared sidewall. The bypass hole 1-1c and bypass hole 2-1d both penetrate the side wall of the manifold body 1-1 opposite to the flat tube group 3. The refrigerant connector 1-4 is welded and fixed to the outside of the side wall of the manifold body 1-1 opposite to the flat tube group 3, and one end of the refrigerant connector 1-4 is connected to one of the bypass hole 1-1c and bypass hole 2-1d on the manifold body 1-1. A plug 1-5 for covering the other of the bypass hole 1-1c and bypass hole 2-1d is also welded and fixed to the outside of the side wall of the manifold body 1-1 opposite to the flat tube group 3.

[0032] More preferably, the refrigerant connector 1-4 located on one set of the manifold bundles 1 is vertically located at the left end of the manifold body 1-1, and the refrigerant connector 1-4 located on another set of the manifold bundles 1 is vertically located at the right end of the manifold body 1-1, and the free ends of the refrigerant connectors 1-4 are all facing forward.

[0033] More preferably, a plurality of mounting brackets 1-6 extending toward the side away from the flat tube assembly 3 are welded and fixed to the front side of the manifold body 1-1, and the mounting brackets 1-6 have opening slots 1-6a for threading bolt assemblies.

[0034] More preferably, the manifold body 1-1 has three parallel chambers 1-1a inside, and the manifold body 1-1 has two bypass holes 1-1c and two bypass holes 1-1d.

[0035] More preferably, the manifold body 1-1 is provided with a connector mounting seat 1-3 on the side wall away from the flat tube group 3 for welding and connecting the refrigerant connector 1-4. The connector mounting seat 1-3 has a through hole three corresponding to the two bypass holes 1-1c or the two bypass holes 1-1d.

[0036] More preferably, the manifold body 1-1 has several rows of flat holes 1-1b on one side wall facing the flat tube group 3, which are connected to the internal chamber 1-1a. The ends of several flat tubes on each row of flat tube group 3 are inserted into and welded to the corresponding flat hole 1-1b.

[0037] More preferably, it also includes two side plates 2. The left ends of the two sets of manifolds 1 are welded and fixed together by one of the side plates 2, and the right ends of the two sets of manifolds 1 are welded and fixed together by the other side plate 2. The side plates 2 and the adjacent flat tubes are welded and fixed together by fins 4.

[0038] This utility model discloses a manifold-type hydraulic oil cooler for engineering machinery with excellent heat dissipation performance. It effectively increases the number of flat tubes and the total cross-sectional area of ​​the flat tubes used for heat exchange medium flow by setting several parallel, spaced chambers inside two sets of manifold bundles, and by setting corresponding rows of flat tube groups between several pairs of corresponding chambers between the two sets of manifold bundles. Compared to a plate-fin type hydraulic oil cooler with only one row of flat tubes between two oil chambers, this significantly increases the total contact area between the heat exchange medium flowing through the flat tubes and the external air, enhancing the heat exchange effect and resulting in excellent heat dissipation performance. The overall structure is compact and reasonable, occupying little space, making it suitable for engineering machinery vehicles with limited installation space. Furthermore, it is low in cost, lightweight, and highly practical.

[0039] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A manifold type hydraulic oil cooler for engineering machinery with good heat dissipation performance, characterized in that, The system includes two sets of manifolds (1) arranged in parallel on the upper and lower sides. Each set of manifolds (1) has several chambers (1-1a) extending along its left and right axial length and arranged in parallel along the front and back horizontal direction. Two adjacent chambers (1-1a) in each set of manifolds (1) are connected through a bypass hole set on the common side wall between them. The two ends of the chambers (1-1a) are sealed. Each set of manifolds (1) is fixed with a refrigerant connector (1-4) that communicates with its internal chamber (1-1a). The two sets of manifolds (1) are connected by several rows of flat tube groups (3) arranged longitudinally between them. Each row of flat tube groups (3) is vertically fixed between two corresponding chambers (1-1a) on the two sets of manifolds (1) along its left and right axial length. Two adjacent flat tubes on each row of flat tube groups (3) are fixedly connected together by welding fins (4).

2. The hydraulic oil cooler for engineering machinery with good heat dissipation performance as described in claim 1, characterized in that, Each of the aforementioned manifold bundles (1) includes a manifold body (1-1), the manifold body (1-1) having a plurality of chambers (1-1a) inside, and end caps (1-2) welded and fixed to both ends of each chamber (1-1a). The left ends of two adjacent chambers (1-1a) inside the manifold body (1-1) are connected through a bypass hole one (1-1c) provided on the common side wall between them, and the right ends of two adjacent chambers (1-1a) inside the manifold body (1-1) are connected through a bypass hole two (1-1d) provided on the common side wall between them. The bypass hole one ( Both 1-1c) and bypass hole two (1-1d) penetrate the side wall of the manifold body (1-1) away from the flat tube group (3). The refrigerant connector (1-4) is welded and fixed to the outside of the side wall of the manifold body (1-1) away from the flat tube group (3). One end of the refrigerant connector (1-4) is connected to one of the bypass hole one (1-1c) and bypass hole two (1-1d) on the manifold body (1-1). A plug (1-5) for covering the other of bypass hole one (1-1c) and bypass hole two (1-1d) is also welded and fixed to the outside of the side wall of the manifold body (1-1) away from the flat tube group (3).

3. The hydraulic oil cooler for engineering machinery with good heat dissipation performance as described in claim 2, characterized in that, The refrigerant connector (1-4) located on one of the manifold bundles (1) is perpendicular to the left end of the manifold body (1-1), and the refrigerant connector (1-4) located on another manifold bundle (1) is perpendicular to the right end of the manifold body (1-1), and the free ends of the refrigerant connectors (1-4) are all facing forward.

4. The manifold-type hydraulic oil cooler for engineering machinery with good heat dissipation performance as described in claim 3, characterized in that, The front side of the manifold body (1-1) is welded with several mounting brackets (1-6) extending away from the flat tube assembly (3), and the mounting brackets (1-6) have opening slots (1-6a) for threading bolt assemblies.

5. The manifold-type hydraulic oil cooler for engineering machinery with good heat dissipation performance as described in claim 4, characterized in that, The manifold body (1-1) has three parallel chambers (1-1a) inside, and the manifold body (1-1) has two bypass holes (1-1c) and two bypass holes (1-1d).

6. The hydraulic oil cooler for engineering machinery with good heat dissipation performance as described in claim 5, characterized in that, The manifold body (1-1) is provided with a connector mounting seat (1-3) on the side wall away from the flat tube group (3) for welding and connecting the refrigerant connector (1-4). The connector mounting seat (1-3) has a through hole three corresponding to the two bypass holes one (1-1c) or the two bypass holes two (1-1d).

7. The hydraulic oil cooler for engineering machinery with good heat dissipation performance as described in claim 6, characterized in that, The main body of the manifold (1-1) has several rows of flat holes (1-1b) on one side wall facing the flat tube group (3), which are connected to the internal chamber (1-1a). The ends of several flat tubes on each row of flat tube group (3) are inserted into and welded to the corresponding flat hole (1-1b).

8. The hydraulic oil cooler for engineering machinery with good heat dissipation performance as described in any one of claims 1 to 7, characterized in that, It also includes two side plates (2). The left ends of the two sets of manifolds (1) are welded and fixed together by one of the side plates (2). The right ends of the two sets of manifolds (1) are welded and fixed together by the other side plate (2). The side plate (2) and the adjacent flat tube are welded and fixed together by fins (4).

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