Flow collecting assembly and heat exchanger
By setting a ratio of thicker flat sections to curved sections on the manifold, combined with plate units and reinforcing plate structures, the problem of weak pressure-bearing capacity of the combined flat and curved manifold is solved, thereby improving the service life and heat exchange efficiency of the heat exchanger.
Patent Information
- Application Number
- CN202520594166.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-03-31
AI Technical Summary
When a manifold combining flat and curved surfaces is subjected to pressure, its pressure-bearing capacity is weakened, affecting the service life of the heat exchanger.
The thickness of the planar section of the manifold is greater than that of the arc section. The ratio of the thickness of the arc section to its outer diameter is 0.05≤TR/R≤0.5. Combined with plate units and reinforcing plate structures, a D-shaped liquid distribution chamber is formed, which enhances the structural strength and distributes the liquid evenly.
This improves the pressure resistance and service life of the manifold, while reducing the volume of the liquid distribution chamber, thus increasing the heat exchange efficiency and structural stability of the heat exchanger.
Smart Images
Figure CN223925554U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the heat exchange technical field, in particular to a flow collecting assembly and a heat exchanger. BACKGROUND
[0002] The heat exchanger is a core component in the air conditioning system, which is often used to control the temperature of the environment by exchanging heat with the air. At present, the heat exchanger mainly includes a flow collecting pipe, a fin and a heat exchange pipe, etc. The heat exchange pipe is in communication with the flow collecting pipe, and the heat exchange pipe increases the contact area with the environment through the fin, thereby improving the heat exchange performance.
[0003] In the related art, part of the flow collecting pipe is provided with a structure combining a plane and an arc surface, which is beneficial to reduce the space occupation of the flow collecting pipe and improve the heat exchange efficiency. However, when the traditional circular flow collecting pipe is subjected to pressure, the pressure can be transmitted and dispersed along the arc, so that each part of the circular flow collecting pipe can share the pressure, and the pressure will not be concentrated in a certain area. On the contrary, when the plane part of the flow collecting pipe combining the plane and the arc surface is subjected to pressure, the pressure will directly act vertically on the plane and cannot be dispersed, which reduces the pressure bearing capacity of the plane part of this type of flow collecting pipe, and is not conducive to the service life of the heat exchanger. CONTENT OF THE INVENTION
[0004] Therefore, it is necessary to provide a flow collecting assembly and a heat exchanger to solve the problem of weakened pressure bearing capacity of the flow collecting pipe combining a plane and an arc surface.
[0005] The present application provides a flow collecting assembly applied to a heat exchanger, which comprises a flow collecting pipe, the flow collecting pipe has a plane section and an arc section connected with each other, the plane section is arranged in a plane, and the arc section is arranged in an arc surface; wherein the outer diameter of the arc section is R, the thickness of the arc section is TR, 0.05≤TR / R≤0.5, and the thickness of the plane section is greater than the thickness of the arc section.
[0006] In one of the embodiments, the flow collecting assembly further comprises a plate unit, the plate unit is arranged along the length direction of the plane section, and the plate unit is arranged close to the plane section.
[0007] In one of the embodiments, the plate unit is arranged close to one side of the flow collecting pipe and is attached to the plane section.
[0008] In one of the embodiments, the plate unit comprises a plurality of reinforcing plates, each of the reinforcing plates is arranged along the length direction of the plane section, and the plurality of reinforcing plates are attached along the thickness direction of the plate unit; or the plate unit is configured as one reinforcing plate, and the reinforcing plate is arranged along the length direction of the plane section.
[0009] In one of the embodiments, the reinforcing plate comprises a main plate and reinforcing ribs, the main plate is arranged along the length direction of the flat section, the reinforcing ribs are arranged along the thickness direction of the main plate and connected to the side of the main plate away from the manifold.
[0010] In one of the embodiments, the thickness TR of the arc section satisfies: 1mm≤TR≤5mm.
[0011] The application further provides a heat exchanger, which comprises heat exchange tubes, fin units and the manifold assembly according to any one of the above embodiments, the manifold assembly comprises a manifold and a plate unit, the number of the fin units is plural, the fin units are arranged at intervals along the length direction of the manifold, the end of the fin unit is arranged at intervals with the manifold and a clearance is formed therebetween, the plate unit is arranged in the clearance, the heat exchange tube is arranged between two adjacent fin units, and the end of the heat exchange tube penetrates through the plate unit and communicates with the manifold.
[0012] In one of the embodiments, the thickness of the plate unit is equal to the width of the clearance.
[0013] In one of the embodiments, the plate unit and the fin unit are welded and fixed, and / or the plate unit and the manifold are welded and fixed, and / or the plate unit and the heat exchange tube are welded and fixed.
[0014] In one of the embodiments, at least part of the surface of the plate unit is provided with a solderless area, and the fin unit is welded and fixed with the solderless area.
[0015] In one of the embodiments, the heat exchanger further comprises two end plates arranged at intervals along the length direction of the manifold, the heat exchange tube and the fin unit are arranged between the two end plates; wherein the flat section is provided with a clearance hole, the end of the end plate penetrates through the clearance hole and abuts against the inner wall of the arc section.
[0016] In one of the embodiments, the end of the end plate is protruded to form a protrusion, the inner wall of the arc section is recessed to form a groove, and the protrusion is inserted into the groove.
[0017] Compared with the prior art, the current application provides a manifold assembly and a heat exchanger, by setting 0.1≤TR / R≤0.5, the structural strength of the arc surface section of the manifold can be ensured, and the thickness of the flat section of the manifold is further increased, effectively improving the pressure-bearing capacity of the flat section and the manifold, thereby being conducive to improving the service life of the heat exchanger. Moreover, the flat section and the arc surface section are connected to form a D-shaped distribution cavity, compared with the traditional circular distribution cavity structure in the manifold, the volume of the distribution cavity of the present application is smaller, which is conducive to realizing uniform distribution, and can also effectively improve the structural strength of the manifold. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.
[0019] Figure 1 A front view of a heat exchanger of an embodiment provided by the present application;
[0020] Figure 2 An exploded view of a heat exchanger of an embodiment provided by the present application;
[0021] Figure 3 A partial cross-sectional view of a heat exchanger of an embodiment provided by the present application;
[0022] Figure 4 A fitting schematic view of an end plate of an embodiment provided by the present application;
[0023] Figure 5 A fitting schematic view of an end plate of another embodiment provided by the present application.
[0024] The meanings of the symbols in the drawings are as follows:
[0025] 100, heat exchanger; 1001, avoidance gap; 10, manifold; 11, flat section; 111, avoidance hole; 12, arc surface section; 121, groove; 13, end cover; 20, heat exchange pipe; 30, fin unit; 40, plate unit; 41, reinforcing plate; 50, end plate; 51, protrusion. DETAILED DESCRIPTION
[0026] In order to make the above objectives, features and advantages of the present application more clear and comprehensible, specific embodiments of the present application will be described below in detail with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application can be practiced without using some or all of these specific details. In other instances, well known process steps have not been described in detail in order to avoid obscuring the present application.
[0027] It is to be noted that when an element or layer is referred to as being "on" or "connected to" another element or layer, it can be directly on or connected to the other element or layer, or intervening elements or layers can be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements or layers present. The use of the term "connected" includes the presence of a wired or wireless connection.
[0028] In addition, the terms "first", "second", etc. are used herein only to describe various elements, and are not intended to imply relative importance or a quantity of the indicated elements. Thus, a feature defined with "first", "second", etc. can include at least one of the feature, either explicitly or implicitly. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.
[0029] In the present application, unless otherwise explicitly specified and limited, "on", "under", and "below" of a first feature to a second feature can mean that the first feature is in direct contact with the second feature, or the first feature is in indirect contact with the second feature through an intermediate medium. Moreover, "above", "over", and "on top of" of a first feature to a second feature can mean that the first feature is directly above or obliquely above the second feature, or only means that the first feature is horizontally higher than the second feature. "Below", "under", and "underneath" of a first feature to a second feature can mean that the first feature is directly below or obliquely below the second feature, or only means that the first feature is horizontally lower than the second feature.
[0030] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. The use of the terms "and / or" includes a set of one or more associated listed items.
[0031] The heat exchanger is a core component in an air conditioning system, which is often used to control the temperature of the environment by exchanging heat with air. At present, the heat exchanger mainly includes a collecting pipe, fins and heat exchange pipes, the heat exchange pipes are communicated with the collecting pipe, and the heat exchange pipes increase the contact area with the environment through the fins, so as to improve the heat exchange performance.
[0032] In the related art, part of the collecting pipe is provided as a structure combining a plane and an arc surface, which is beneficial to reduce the space occupation of the collecting pipe and improve the heat exchange efficiency. However, when the traditional circular collecting pipe is subjected to pressure, the pressure can be transmitted and dispersed along the arc, so that each part of the circular collecting pipe can share the pressure without concentrating the pressure in a certain area. On the contrary, when the plane part of the collecting pipe combining the plane and the arc surface is subjected to pressure, the pressure directly acts vertically on the plane and cannot be dispersed, which weakens the pressure bearing capacity of the collecting pipe at the plane part, and is not conducive to the service life of the heat exchanger.
[0033] Please refer to Figures 1-5 To solve the problem of weakened pressure bearing capacity when the existing heat exchanger adopts the collecting pipe combining the plane and the arc surface, the present application provides a collecting assembly, which is applied to a heat exchanger 100. Specifically, the collecting assembly includes a collecting pipe 10, the collecting pipe 10 has a plane section 11 and an arc section 12 connected with each other, the plane section 11 is provided as a plane, and the arc section 12 is provided as an arc surface. Wherein, the outer diameter of the arc section 12 is R, the thickness of the arc section 12 is TR, wherein 0.05≤TR / R≤0.5, and the thickness of the plane section 11 is greater than the thickness of the arc section 12. In this way, by setting 0.05≤TR / R≤0.5, the structural strength of the arc section 12 on the collecting pipe 10 can be ensured, and by further increasing the thickness of the plane section 11 on the collecting pipe 10, the pressure bearing capacity of the plane section 11 and the collecting pipe 10 is effectively improved, thereby being conducive to improving the service life of the heat exchanger 100. Moreover, the plane section 11 and the arc section 12 are connected to form a D-shaped distribution chamber, compared with the traditional circular distribution chamber structure in the collecting pipe, the volume of the distribution chamber of the present application is smaller, which is conducive to realizing uniform distribution, and can also effectively improve the structural strength of the collecting pipe 10.
[0034] Specifically, the thickness TR of the arc section 12 satisfies: 1mm≤TR≤5mm, if the thickness is too small, the structural strength of the collecting pipe 10 cannot meet the requirements, and if the thickness is too large, the material is wasted and the production cost is increased.
[0035] Optionally, the value of TR / R can be 0.05, 0.1, 0.2, 0.3, 0.4 or 0.5, and the value of TR can be 1mm, 2mm, 3mm, 4mm or 5mm, etc., which are not listed one by one.
[0036] Here, the planar section 11 and the arc section 12 can be integrally formed, thereby forming the D-shaped structure of the manifold 10. In this application, the number of the planar section 11 and the arc section 12 is not limited to one or more, which can be reasonably set according to actual needs.
[0037] The application also provides a heat exchanger 100, which comprises the heat exchange tube 20, the fin unit 30, and the above-mentioned manifold assembly, the manifold assembly comprising the manifold 10 and the plate unit 40, the plate unit 40 being arranged along the length direction of the planar section 11. The number of the fin unit 30 is multiple, the multiple fin units 30 being arranged at intervals along the length direction of the manifold 10, and the end of the fin unit 30 being arranged at intervals with the manifold 10 and forming the avoiding gap 1001. The plate unit 40 is arranged in the avoiding gap 1001, and the plate unit 40 is arranged close to the planar section 11. The heat exchange tube 20 is arranged between the adjacent two fin units 30, and the end of the heat exchange tube 20 is arranged through the plate unit 40 and communicates with the manifold 10.
[0038] In the traditional structure, the surfaces of the fin unit 30 and the manifold 10 are provided with a solder composite layer, which makes the amount of solder too much when the fin unit 30 is directly welded with the manifold 10. Under the action of gravity or capillary force, etc., the excess solder on the surface of the manifold 10 will flow to the fin unit 30, thereby causing the fusion corrosion and other welding defects on the fin unit 30 in contact with the manifold 10. In this application, it can be understood that by filling the plate unit 40 in the avoiding gap 1001 formed between the manifold 10 and the fin unit 30, on the one hand, the solder layer on the surface of the manifold 10 can be stopped by the plate unit 40 after melting, preventing the solder from flowing to the fin unit 30 in large quantities, thereby greatly reducing the probability of fusion corrosion of the fin unit 30. On the other hand, the plate unit 40 can reduce the internal and external pressure difference of the area of the heat exchange tube 20 not covered by the fin unit 30, reduce the weak pressure bearing point, thereby improving the overall pressure bearing capacity of the heat exchanger 100, reducing the air leakage of the heat exchanger 100, and improving the heat exchange efficiency of the heat exchanger 100.
[0039] In an embodiment, as shown in Figure 3 The side of the plate unit 40 close to the manifold 10 is arranged in close contact with the planar section 11, so that the overall pressure bearing capacity of the manifold 10 is further improved by the close contact between the plate unit 40 and the manifold 10, thereby improving the service life of the heat exchanger 100.
[0040] Further, the thickness of the plate unit 40 can be set equal to the width of the avoidance gap 1001. That is, in the present embodiment, the plate unit 40 fills the gap between the fin unit 30 and the header 10 completely, eliminates the weak pressure bearing point, improves the pressure bearing capacity of the heat exchanger 100, and facilitates the connection of the plate unit 40 with the fin unit 30 and the header 10 respectively. At the same time, further prevents air leakage at the avoidance gap 1001 of the heat exchanger 100, improves the air flow participating in heat exchange, effectively guarantees the heat exchange capacity, and is beneficial to improve the heat exchange efficiency of the heat exchanger 100.
[0041] It should be noted that the thickness direction of the plate unit 40 and the width direction of the avoidance gap 1001 are the same, both of which are the length direction of the heat exchange pipe 20.
[0042] Specifically, the plate unit 40 and the fin unit 30, the plate unit 40 and the header 10, and the plate unit 40 and the heat exchange pipe 20 can be fixed by welding. In this way, the connection of the plate unit 40 is reliable, and the connection difficulty can be reduced.
[0043] In an embodiment, at least part of the surface of the plate unit 40 is provided with a solder-free area, and the fin unit 30 is welded and fixed with the solder-free area. Since the surface at the welding position of the plate unit 40 and the fin unit 30 is not provided with solder, welding can be performed only through the solder layer on the surface of the fin unit 30 or by additionally applying solder, so as to facilitate the control of the amount of solder. In this way, when welding, the excessive overflow of solder onto the fin unit 30 can be effectively prevented, further avoiding the occurrence of corrosion phenomenon on the fin unit 30, and improving the reliability of the structure of the fin unit 30.
[0044] As a preferred, the plate unit 40 can be provided as a light plate structure, that is, the surface of the plate unit 40 is not provided with a solder layer. In addition, in order to facilitate the brazing between the fin unit 30 and the heat exchange pipe 20, in the present embodiment, the heat exchange pipe 20 can be provided as a flat tube, so as to improve the contact area between the fin unit 30 and the heat exchange pipe 20, thereby improving the reliability of the connection between the two.
[0045] In an embodiment, as shown in Figure 1 and Figure 2 , the plate unit 40 is configured as one reinforcing plate 41, and the reinforcing plate 41 is provided along the length direction of the flat section 11. In this way, the structure of the plate unit 40 is simple, easy to process, and can effectively improve the processing efficiency. In addition, the thickness of the one reinforcing plate 41 is preferably set as the width of the avoidance gap 1001, so as to realize the filling of the avoidance gap 1001.
[0046] In another embodiment, as shown in Figure 3As shown, the plate unit 40 can also include a plurality of reinforcing plates 41, each of which extends along the length direction of the flat section 11 and is arranged in abutment along the thickness direction of the plate unit 40, so that the reinforcing plates 41 can also fill the avoidance gap 1001.
[0047] For example, two reinforcing plates 41 are provided in the embodiment, and in other embodiments, the number of reinforcing plates 41 can be three, four or more, etc. according to actual needs.
[0048] To further improve the pressure-bearing capacity of the heat exchanger 100, in an embodiment, the reinforcing plate 41 includes a main plate and a reinforcing rib, the main plate extends along the length direction of the flat section 11, the reinforcing rib extends along the thickness direction of the main plate and is connected to the side of the main plate away from the header 10. In this way, the structural strength of the reinforcing plate 41 is further improved, thereby ensuring the supporting strength of the reinforcing plate 41 to the heat exchange tube 20, the header 10 and the fin unit 30.
[0049] Optionally, the reinforcing rib can be arranged around the heat exchange tube 20, or can be arranged in a strip or mesh shape on the main plate. It should be noted that when the reinforcing rib is provided on the reinforcing plate 41, the thickness of the reinforcing plate 41 can be considered as the sum of the thicknesses of the main plate and the reinforcing rib.
[0050] In an embodiment, as shown in Figures 1-5 The heat exchanger 100 further includes two end plates 50 arranged at intervals along the length direction of the header 10, and the heat exchange tube 20 and the fin unit 30 are arranged between the two end plates 50. The end of the end plate 50 penetrates the plate unit 40 and is connected to the header 10. It can be understood that the end plate 50 plays a supporting and protecting role for the heat exchange tube 20 and the fin unit 30, improves the burst pressure, and thus effectively ensures the stability and safety of the overall structure of the heat exchanger 100.
[0051] Further, in an embodiment, as shown in Figure 4 The flat section 11 is provided with an avoidance hole 111, and the end of the end plate 50 penetrates the avoidance hole 111 and abuts against the inner wall of the curved section 12. That is, the end plate 50 is at least partially inserted into the header 10, increasing the contact area between the end plate 50 and the header 10 and further improving the stability of the structure of the heat exchanger 100.
[0052] Further, in an embodiment, as shown in Figure 5 The end of the end plate 50 is formed with a protrusion 51, the inner wall of the curved section 12 is recessed to form a groove 121, and the protrusion 51 is inserted into the groove 121. In this way, the end plate 50 can be prevented from shaking, and the connection between the end plate 50 and the header 10 is more reliable.
[0053] Specifically, the planar section 11 and the arc section 12 of the manifold 10 are connected to form a D-shaped distribution cavity with two open ends. The manifold 10 further comprises an end cover 13, which is arranged at the opening of the distribution cavity to seal the distribution cavity. The end cover 13 can be attached to the part of the end plate 50 inserted into the manifold 10 to improve the stability of the connection.
[0054] Any combination of the above-described technical features of the embodiments can be made. In order to make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist, they should be considered as the scope of the present disclosure.
[0055] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be pointed out that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.
Claims
1. A flow collector assembly used in a heat exchanger, characterized in that, The current collecting assembly comprises a current collecting pipe (10) having a planar section (11) and an arc section (12) connected with each other, wherein the planar section (11) is arranged in a planar manner, and the arc section (12) is arranged in an arc manner. The outer diameter of the arc section (12) is R, the thickness of the arc section (12) is TR, wherein 0.05≤TR / R≤0.5, and the thickness of the planar section (11) is greater than the thickness of the arc section (12).
2. The current collection assembly of claim 1, wherein, The current collecting assembly further comprises a plate unit (40) arranged along the length direction of the planar section (11), and the plate unit (40) is arranged close to the planar section (11).
3. The current collection assembly of claim 2, wherein, The side of the plate unit (40) close to the current collecting pipe (10) is arranged in abutment with the planar section (11).
4. The current collection assembly of claim 2, wherein, The plate unit (40) comprises a plurality of reinforcing plates (41), each of which is arranged along the length direction of the planar section (11), and the plurality of reinforcing plates (41) are arranged in abutment along the thickness direction of the plate unit (40). Alternatively, the plate unit (40) is configured as one reinforcing plate (41), and the reinforcing plate (41) is arranged along the length direction of the planar section (11).
5. The current collection assembly of claim 4, wherein, The reinforcing plate (41) comprises a main plate arranged along the length direction of the planar section (11) and a reinforcing rib arranged along the thickness direction of the main plate and connected to the side of the main plate away from the current collecting pipe (10).
6. The current collection assembly of claim 1, wherein, The thickness TR of the arc section (12) satisfies 1mm≤TR≤5mm.
7. A heat exchanger, characterized by The heat exchange device comprises a heat exchange pipe (20), a fin unit (30), and the current collecting assembly according to any one of claims 1-6, the current collecting assembly comprising a current collecting pipe (10) and a plate unit (40), the number of the fin units (30) is plural, the plurality of fin units (30) are arranged in intervals along the length direction of the current collecting pipe (10), and the end portions of the fin units (30) are arranged in intervals with the current collecting pipe (10) and form an avoiding gap (1001) therebetween. The plate unit (40) is arranged in the avoiding gap (1001), the heat exchange pipe (20) is arranged between two adjacent fin units (30), and the end portion of the heat exchange pipe (20) penetrates through the plate unit (40) and communicates with the current collecting pipe (10).
8. The heat exchanger of claim 7, wherein The thickness of the plate unit (40) is equal to the width of the avoiding gap (1001).
9. The heat exchanger of claim 7, wherein The plate unit (40) and the fin unit (30) are welded and fixed, and / or the plate unit (40) and the current collecting pipe (10) are welded and fixed, and / or the plate unit (40) and the heat exchange pipe (20) are welded and fixed.
10. The heat exchanger of claim 9, wherein At least part of the surface of the plate unit (40) is provided with a solder-free area, and the fin unit (30) is welded and fixed with the solder-free area.
11. The heat exchanger of claim 7, wherein The heat exchanger further comprises two end plates (50) arranged at intervals along the length direction of the header (10), and the heat exchange tubes (20) and the fin units (30) are arranged between the two end plates (50). The end plate (50) is provided with a protrusion (51) at the end thereof, and the inner wall of the arc surface section (12) is provided with a groove (121) in a recessed manner, and the protrusion (51) is inserted into the groove (121) in a plug-in manner.
12. The heat exchanger of claim 11, wherein, The end plate (50) is provided with a protrusion (51) at the end thereof, and the inner wall of the arc surface section (12) is provided with a groove (121) in a recessed manner, and the protrusion (51) is inserted into the groove (121) in a plug-in manner.