A distributor tube assembly for a heat exchanger

Abstract

This utility model relates to the field of distribution pipe design technology, and discloses a distribution pipe assembly for a heat exchanger. It includes a distribution pipe body for inserting into a manifold, an extension bend located at one end of the distribution pipe body and extending outside the manifold, and an end cap fixed to the extension bend for wrapping around the end of the manifold. Multiple support plates are evenly spaced on the distribution pipe body. The two sides of each support plate are arc-shaped for fitting against the inner wall of the manifold. An opening groove is formed in the middle of each support plate, and a C-shaped elastic buckle is fixed at the bottom of the opening groove for the distribution pipe body to be inserted. The C-shaped elastic buckle locks the support plate onto the distribution pipe body. Since the two sides of the support plate are arc-shaped for fitting against the inner wall of the manifold, the support plate provides support for the installation of the distribution pipe body inside the manifold, ultimately facilitating stable installation of the distribution pipe body within the manifold.

Description

Technical Field

[0001] This utility model belongs to the field of distribution pipe design technology, and specifically relates to a distribution pipe assembly for a heat exchanger. Background Technology

[0002] A heat exchanger is an energy-saving device that enables heat transfer between two or more fluids at different temperatures. It transfers heat from a higher-temperature fluid to a lower-temperature fluid, bringing the fluid temperature to the specified parameters of the process to meet the requirements of the process conditions. It is also one of the main devices for improving energy utilization efficiency.

[0003] Currently, Chinese patent publication number CN112013710A, published on December 1, 2020, discloses a dispensing tube. The dispensing tube has a tube wall and an inner cavity. The tube wall of the dispensing tube is provided with a through hole. The tube wall of the dispensing tube includes an arc-shaped wall and a bottom wall. The arc-shaped wall has a first side edge and a second side edge. The bottom wall has a first side edge and a second side edge. The bottom wall is generally straight. The first side edge of the arc-shaped wall is connected to the first side edge of the bottom wall. The second side edge of the arc-shaped wall is connected to the second side edge of the bottom wall. A heat exchanger includes: a manifold having a first end, a second end, a wall, and an inner cavity; a distribution pipe having a first end and a second end, the first end of the distribution pipe being a refrigerant inlet, the second end of the distribution pipe extending from the first end of the manifold into the inner cavity of the manifold, and a through hole connecting the inner cavity of the manifold and the inner cavity of the distribution pipe; and multiple heat exchange tubes arranged along the length of the manifold, each heat exchange tube having a first end and an inner cavity, the first end of the heat exchange tube passing through the wall of the manifold and inserting into the inner cavity of the manifold, and the inner cavity of the heat exchange tube communicating with the inner cavity of the manifold.

[0004] During the operation of the heat exchanger, refrigerant enters the inner cavity of the distribution pipe through its first end. The refrigerant flows from the first end to the second end within the distribution pipe. It can also enter the inner cavity of the manifold through through holes in the distribution pipe wall. The first ends of multiple heat exchange tubes all pass through the wall of the manifold, and each heat exchange tube has an opening to allow communication between its inner cavity and the manifold's inner cavity. Refrigerant in the manifold can enter the inner cavity of the heat exchange tubes through their first ends, and heat exchange can occur within the inner cavity of the heat exchange tubes.

[0005] When the distribution pipe is fixed inside the manifold, it is often fixed by welding the end of the distribution pipe to the end of the manifold. If the manifold itself is long, the distribution pipe to be inserted also needs to be of a matching length. However, because the distribution pipe inside the manifold is relatively long, it is easy for it to shift its position due to its own weight, which is not conducive to the stable installation of the distribution pipe inside the manifold. Utility Model Content

[0006] The purpose of this invention is to provide a distribution pipe assembly for a heat exchanger, which facilitates the stable installation of the distribution pipe body inside the manifold.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a distribution pipe assembly for a heat exchanger, comprising a distribution pipe body for inserting into a manifold, and an extension bend disposed at one end of the distribution pipe body and extending to the outside of the manifold, characterized in that: it further comprises an end cap fixed on the extension bend and used to wrap around the end of the manifold, a plurality of support plates are evenly spaced on the distribution pipe body, the two sides of the support plates are arc-shaped for fitting against the inner wall of the manifold, an opening groove is provided in the middle of the support plate, and a C-shaped elastic buckle for the distribution pipe body to be embedded is fixed at the bottom of the opening groove.

[0008] A further feature of this invention is that both ends of the elastic buckle are provided with inclined guide portions.

[0009] A further feature of this invention is that a crossbar is provided at the lower side of both ends of the support plate for abutting against the end face of the heat exchange tube inside the manifold, and the extension direction of the crossbar is perpendicular to the extension direction of the end face of the heat exchange tube.

[0010] A further feature of this invention is that: a fitting post extending vertically upward and located on one side of the support plate is provided in the middle of the crossbar; an elastic locking post located on the other side of the support plate and used to press against the support plate is provided in the middle of the crossbar; a triangular locking head is provided at the upper end of the elastic locking post; and multiple locking grooves for the triangular locking heads to be inserted are provided on the support plate.

[0011] A further feature of this invention is that a pressing arm is provided on the side of the elastic locking post.

[0012] A further feature of this invention is that the support plate has a guide radius at its arc-shaped side.

[0013] In summary, this utility model has the following beneficial effects:

[0014] 1. When the distribution pipe body is inserted into the manifold, the end cap is wrapped around the end of the manifold and welded in place, thereby achieving a stable seal between the distribution pipe body and the end of the manifold through the end cap; multiple support plates evenly spaced on the distribution pipe body are used, and the support plates are embedded in the distribution pipe body by elastic buckles in the opening grooves, so that the support plates are locked on the distribution pipe body by C-shaped elastic buckles. Since the two sides of the support plates are arc-shaped to fit against the inner wall of the manifold, the support plates can support the installation of the distribution pipe body in the manifold, which is conducive to the stable installation of the distribution pipe body in the manifold.

[0015] 2. The inclined guides at both ends of the elastic buckle can act as guides, which is beneficial for the distribution pipe body to be embedded in the elastic buckle.

[0016] 3. In the existing technology, the ends of multiple heat exchange tubes pass through the wall of the manifold and are located inside the manifold. At this time, the crossbars at the lower sides of both ends of the support plate can abut against the end faces of the heat exchange tubes inside the manifold. Thus, the crossbars provide further support for the installation of the distribution tube body inside the manifold, which further facilitates the stable installation of the distribution tube body inside the manifold. At the same time, since the extension direction of the crossbars is perpendicular to the extension direction of the heat exchange tube end faces, the contact area between the crossbars and the heat exchange tube end faces is reduced, avoiding any impact on the liquid inlet at the ends of the heat exchange tubes.

[0017] 4. The crossbar utilizes the fitting column located on one side of the support plate and the elastic locking column located on the other side of the support plate. The triangular locking head at the upper end of the elastic locking column is embedded in the locking groove at any height position, thereby adjusting the position of the crossbar according to the position of the heat exchange tube in the manifold, so that the crossbar can abut against the end face of the heat exchange tube at different height positions.

[0018] 5. When it is necessary to open the elastic locking pin, simply press down on the pressing arm to open the elastic locking pin;

[0019] 6. The support plate has a guide rounded corner on its arc-shaped side, which facilitates the smooth insertion of the support plate into the manifold along with the distribution pipe body. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is an enlarged view of the connection relationship between the support plate and the crossbar in this utility model;

[0023] Figure 3 This is a structural plan view of the present invention when the manifold and heat exchanger are combined, wherein the manifold and heat exchanger are represented by dashed lines;

[0024] Figure 4 This is a cross-sectional view of the structure of this utility model when it combines a manifold and a heat exchanger.

[0025] In the diagram, 1. Distribution pipe body; 11. Extension bend; 111. End cap; 2. Support plate; 21. Opening groove; 22. Elastic buckle; 221. Inclined guide part; 23. Locking groove; 24. Guide rounded corner; 3. Crossbar; 31. Fitting column; 32. Elastic locking column; 321. Triangular locking head; 322. Pressing arm; 4. Manifold; 5. Heat exchanger tube. Detailed Implementation

[0026] The technical solutions in the embodiments will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0027] A distribution pipe assembly for a heat exchanger, as shown in the reference Figure 1 , Figure 2 , Figure 3 The heat exchanger's distribution pipe assembly includes a distribution pipe body 1 for inserting into a manifold 4, an extension bend 11 integrally disposed at one end of the distribution pipe body 1 and extending to the outside of the manifold 4, and an end cap 111 welded and fixed to the extension bend 11 for welding around the end of the manifold 4. The distribution pipe body 1 has multiple refrigerant holes for refrigerant to pass through on its pipe wall, and multiple support plates 2 are evenly distributed on the distribution pipe body 1. The two sides of the support plates 2 are arc-shaped for fitting against the inner wall of the manifold 4, and the arc-shaped sides of the support plates 2 are also provided with guide rounded corners 24.

[0028] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 The support plate 2 has an opening groove 21 in the middle, and a C-shaped elastic buckle 22 for the distribution pipe body 1 to be inserted is welded to the bottom of the opening groove 21. Both ends of the elastic buckle 22 are integrally provided with inclined guide parts 221. At the lower side of both ends of the support plate 2, there are horizontal bars 3 for abutting against the end face of the heat exchange tube 5 in the manifold 4, and the extension direction of the horizontal bars 3 is perpendicular to the extension direction of the end face of the heat exchange tube 5. At the same time, a vertically upward part is welded to the middle of the horizontal bars 3. A fitting column 31 extends in the direction and is located on one side of the support plate 2, while an elastic locking column 32 located on the other side of the support plate 2 and used to press against the support plate 2 is welded to the middle of the crossbar 3. The upper end of the elastic locking column 32 is integrally provided with a triangular locking head 321, and the support plate 2 is provided with multiple locking grooves 23 for the triangular locking head 321 to be inserted. The cross section of the locking groove 23 is a right triangle. At the same time, a pressing arm 322 is integrally provided on the side of the elastic locking column 32.

[0029] Principle: When the distribution pipe body 1 is inserted into the manifold 4, the end cap 111 is wrapped around the end of the manifold 4 and welded to fix it, thereby achieving a stable seal between the distribution pipe body 1 and the end of the manifold 4 through the end cap 111; multiple support plates 2 are evenly distributed on the distribution pipe body 1, and the support plates 2 are embedded in the elastic buckles 22 in the opening groove 21, thereby locking the support plates 2 onto the distribution pipe body 1 through the C-shaped elastic buckles 22. Since the two sides of the support plates 2 are arc-shaped for fitting against the inner wall of the manifold 4, the support plates 2 can support the installation of the distribution pipe body 1 in the manifold 4, which is conducive to the stable installation of the distribution pipe body 1 in the manifold 4.

[0030] Meanwhile, in the existing technology, the ends of multiple heat exchange tubes 5 pass through the pipe wall of the manifold 4 and are located inside the manifold 4. At this time, the crossbars 3 at the lower positions of both ends of the support plate 2 can abut against the end face of the heat exchange tubes 5 inside the manifold 4. Thus, the crossbars 3 provide further support for the installation of the distribution pipe body 1 inside the manifold 4, which further facilitates the stable installation of the distribution pipe body 1 inside the manifold 4.

Claims

1. A distribution pipe assembly for a heat exchanger, comprising a distribution pipe body (1) for inserting into a manifold (4), and an extension bend (11) disposed at one end of the distribution pipe body (1) and extending to the outside of the manifold (4), characterized in that: It also includes an end cap (111) fixed on the extension bend (11) and used to wrap around the end of the manifold (4). Multiple support plates (2) are evenly spaced on the distribution pipe body (1). The two sides of the support plate (2) are arc-shaped for fitting against the inner wall of the manifold (4). An opening groove (21) is provided in the middle of the support plate (2). A C-shaped elastic buckle (22) is fixed at the bottom of the opening groove (21) for the distribution pipe body (1) to be inserted.

2. The distribution pipe assembly of a heat exchanger according to claim 1, characterized in that: Both ends of the elastic buckle (22) are provided with inclined guide portions (221).

3. The distribution pipe assembly of a heat exchanger according to claim 1, characterized in that: The support plate (2) has a crossbar (3) at the lower side of both ends for abutting against the end face of the heat exchange tube (5) inside the manifold (4). The extension direction of the crossbar (3) is perpendicular to the extension direction of the end face of the heat exchange tube (5).

4. The distribution pipe assembly of a heat exchanger according to claim 3, characterized in that: The crossbar (3) has a fitting post (31) extending vertically upward and located on one side of the support plate (2) in the middle. The crossbar (3) has an elastic locking post (32) located on the other side of the support plate (2) and used to press against the support plate (2). The upper end of the elastic locking post (32) is provided with a triangular locking head (321). The support plate (2) has multiple locking grooves (23) for the triangular locking head (321) to be inserted.

5. The distribution pipe assembly of a heat exchanger according to claim 4, characterized in that: A pressing arm (322) is provided on the side of the elastic locking post (32).

6. The distribution pipe assembly of a heat exchanger according to claim 1, characterized in that: The support plate (2) has a guide radius (24) on its arc-shaped side.

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