Distribution structure of heat exchanger
By introducing a return manifold and a parallel horizontal straight pipe structure in the heat exchanger, the problem of uneven supply of working fluid is solved, and the uniform distribution of fluid and the improvement of system stability are achieved.
Patent Information
- Application Number
- CN202422626625.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-10-30
AI Technical Summary
Existing heat exchangers have the problem of uneven pressure during the working fluid supply process, which causes the flow rate of some distribution manifolds to be too large or too small, affecting the stability of the system.
A combined structure of supply pipe, distribution manifold and return manifold is adopted. The working fluid is introduced into the supply section through the return manifold and mixed with it to form a secondary flow, ensuring the dynamic balance of the fluid. The parallel and horizontal straight pipes are used to reduce pressure instability.
The uniform distribution of the working fluid in the heat exchanger is achieved, the dynamic balance of the fluid in the system is enhanced, the situation of local excessive high or low pressure is reduced, and the operating stability of the system is improved.
Smart Images
Figure CN223346006U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a distribution structure of a heat exchanger. Background Art
[0002] Existing heat exchanger distribution structures are prone to uneven pressure during the supply of working fluid. This is particularly true in multi-manifold distribution designs. Because the flow rate and pressure of the working fluid within the supply pipes cannot be evenly distributed across the distribution manifolds, some distribution manifolds may experience excessive or insufficient flow, impacting overall system stability. Utility Model Content
[0003] The main purpose of the utility model is to solve the problem of uneven supply pressure of working fluid in the existing heat exchanger.
[0004] To achieve the above objectives, the present invention provides a heat exchanger distribution structure comprising a supply pipe, at least two distribution manifolds, and at least one return manifold. The supply pipe is divided into a supply section and an extension section connected to the supply section. The at least two distribution manifolds are connected to the supply pipe and spaced apart from the supply section of the supply pipe. The at least two distribution manifolds are connected to the heat exchanger. Both ends of the at least one return manifold are connected to the supply pipe. One end of the at least one return manifold is connected to the supply section of the supply pipe and is located between the at least two distribution manifolds, and the other end is connected to the extension section of the supply pipe.
[0005] In one embodiment, the number of the at least one return manifold is N, the number of the at least two distribution manifolds is N+1, N is greater than or equal to 1, and one end of the at least one return manifold connected to the supply section of the supply pipe is located between the at least two distribution manifolds.
[0006] In one embodiment, the supply pipe includes a first straight pipe, a curved pipe connected to the first straight pipe, and a second straight pipe connected to the curved pipe. The supply pipe uses the first straight pipe as the supply section, and uses the curved pipe and the second straight pipe as the extension sections.
[0007] In one embodiment, the first straight tube is parallel to the second straight tube.
[0008] In one embodiment, the first straight tube and the second straight tube are arranged horizontally.
[0009] In one embodiment, the end of the at least one return manifold connected to the extension section of the supply pipe is not located at the supply section but is located at an end of the extension section, and the end is closed.
[0010] In one embodiment, the at least two distribution manifolds are perpendicular to the supply pipe and are equidistantly disposed on the supply section of the supply pipe.
[0011] In one embodiment, the distance between one end of the at least one return manifold connected to the supply section of the supply pipe and the at least two adjacent distribution manifolds is equal.
[0012] The above-described implementation of the present invention provides the following advantages over conventional methods: Due to the provision of the at least one return manifold, when the at least one return manifold introduces a working fluid into the supply section of the supply pipe, the working fluid mixes with the working fluid in the supply section to form a secondary flow. This prevents excessively high or low pressures in the at least two distribution manifolds, further enhancing the overall fluid dynamic balance of the supply pipe. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 , is a schematic diagram of the assembly structure of an embodiment of the utility model;
[0014] Figure 2 , is a schematic diagram of a partially exploded structure of an embodiment of the present utility model;
[0015] Figure 3 ,for Figure 2 Schematic diagram of the cross section along the AA section line;
[0016] Figure 4 ,for Figure 2 Schematic diagram of the cross section along the BB line;
[0017] Figure 5 , is a cross-sectional structural diagram of an embodiment of the present utility model.
[0018]
Explanation of symbols
[0019] 20: Heat exchanger
[0020] 30: Allocation Structure
[0021] 31: Supply pipe
[0022] 311: Supply Segment
[0023] 312: Extension
[0024] 313: Water inlet
[0025] 314: Water outlet
[0026] 315: First Direct Pipe
[0027] 316: elbow
[0028] 317: Second straight pipe
[0029] 318: The End
[0030] 32: Distribution manifold
[0031] 33: Return manifold DETAILED DESCRIPTION
[0032] The detailed description and technical content of the utility model are now described as follows with reference to the accompanying drawings:
[0033] See also Figures 1 to 5 The present invention provides a distribution structure 30 of a heat exchanger 20, which provides a uniform supply of a working fluid to the heat exchanger 20. The distribution structure 30 includes a supply pipe 31, at least two distribution manifolds 32, and at least one return manifold 33. The supply pipe 31 is divided into a supply section 311 and an extension section 312 connected to the supply section 311. The supply section 311 serves as the upstream of the supply pipe 31, and the extension section 312 serves as the downstream of the supply pipe 31. The supply section 311 of the supply pipe 31 is provided with a water inlet 313, which provides the working fluid with entry into the distribution structure 30. The at least two distribution manifolds 32 are connected to the supply pipe 31 and are spaced apart at the supply section 311 of the supply pipe 31. The at least two distribution manifolds 32 are connected to the heat exchanger 20. Each of the distribution manifolds 32 has a water outlet 314 away from the supply section 311. The water outlet 314 provides the working fluid in the supply pipe 31 to be introduced into the heat exchanger 20 for heat exchange.
[0034] As previously mentioned, the at least one return manifold 33 is disposed on the supply pipe 31, and both ends of the at least one return manifold 33 are connected to the supply pipe 31. Specifically, one end of the at least one return manifold 33 is connected to the supply section 311 of the supply pipe 31, and the other end of the at least one return manifold 33 is connected to the extension section 312 of the supply pipe 31. The location where the at least one return manifold 33 connects to the supply pipe 31 is between the at least two distribution manifolds 32. The at least one return manifold 33 and the supply pipe 31 together form at least one circulation flow path. The at least one return manifold 33 receives the working fluid from the extension section 312 of the supply pipe 31 and guides the working fluid back to the supply section 311 of the supply pipe 31. In other words, the at least one return manifold 33 serves as a connecting portion between the supply section 311 and the extension section 312 , and guides the working fluid in the extension section 312 back to the supply section 311 .
[0035] As can be seen from the above, when the at least one return manifold 33 introduces the working fluid into the supply section 311 of the supply pipe 31, the working fluid mixes with the working fluid in the supply section 311 to form a secondary flow. This prevents localized pressure increases or decreases in the at least two distribution manifolds 32, further enhancing the overall fluid dynamic balance of the supply pipe 31.
[0036] Continuing from the above, in one embodiment, the number of the at least one return manifold 33 is N, and the number of the at least two distribution manifolds 32 is N+1, where N is an integer greater than or equal to 1. That is, when N is 1, the distribution structure 30 includes one return manifold 33 and two distribution manifolds 32. On the other hand, when N is greater than 1, the distribution structure 30 may include multiple return manifolds 33 and multiple distribution manifolds 32. For example, when N is 2, the distribution structure 30 will include two return manifolds 33 and three distribution manifolds 32, with each return manifold 33 disposed between two adjacent distribution manifolds 32.
[0037] Further reading Figure 1 or Figure 2 In another embodiment, the supply pipe 31 in the distribution structure 30 includes a first straight pipe 315, a curved pipe 316 connected to the first straight pipe 315, and a second straight pipe 317 connected to the curved pipe 316. The first straight pipe 315 serves as the supply section 311 of the supply pipe 31, while the curved pipe 316 and the second straight pipe 317 serve as the extension section 312 of the supply pipe 31. The first straight pipe 315 serves as the upstream end of the supply pipe 31, while the second straight pipe 317 serves as the downstream end.
[0038] Continuing from the above, in another embodiment, the first straight pipe 315 and the second straight pipe 317 in the distribution structure 30 are arranged in parallel. In this way, the flow velocity changes and pressure instability caused by asymmetry are avoided, thereby reducing local vortexes and pressure losses. Furthermore, in another embodiment, the first straight pipe 315 and the second straight pipe 317 are arranged horizontally. It is ensured that the height head in the supply pipe 31 can remain consistent during the process of part of the working fluid entering the second straight pipe 317. Specifically, the height head in the supply pipe 31 remains consistent to avoid the gravity causing uneven pressure when the working fluid flows through pipelines of different heights due to height differences, resulting in pressure changes that further affect the stability of the system. Therefore, by setting the first straight pipe 315 and the second straight pipe 317 horizontally, the pressure of the working fluid in the pipeline can be evenly distributed, and unnecessary energy loss can be reduced.
[0039] Please refer to Figures 1 to 4 In one embodiment, the at least one return manifold 33 is connected to one end of the extension section 312 of the supply pipe 31 and is not located at the supply section 311 but at an end 318 of the extension section 312, wherein the end 318 is closed.
[0040] Please refer to Figure 4 or Figure 5 In one embodiment, the at least two distribution manifolds 32 in the distribution structure 30 are perpendicular to the supply pipe 31 and are equidistantly disposed in the supply section 311 of the supply pipe 31 .
[0041] Please refer to Figures 1 to 4 In one embodiment, the at least one return manifold 33 in the distribution structure 30 is connected to one end of the supply section 311 of the supply pipe 31 and is equidistant from the at least two adjacent distribution manifolds 32. This ensures that the flow rate and pressure within each distribution manifold 32 remain consistent, and prevents uneven flow distribution caused by different lengths.
Claims
1. A heat exchanger distribution structure, characterized in that: Include: A supply pipe comprising a supply section and an extension section connected to the supply section; at least two distribution manifolds connected to the supply pipe and spaced apart from each other at the supply section of the supply pipe, the at least two distribution manifolds being connected to the heat exchanger; and At least one return manifold has both ends connected to the supply pipe. One end of the at least one return manifold is connected to the supply section of the supply pipe and is located between the at least two distribution manifolds, and the other end is connected to the extension section of the supply pipe.
2. The heat exchanger distribution structure according to claim 1, characterized in that: The number of the at least one return manifold is N, the number of the at least two distribution manifolds is N+1, N is greater than or equal to 1, and one end of the at least one return manifold connected to the supply section of the supply pipe is located between the at least two distribution manifolds.
3. The heat exchanger distribution structure according to claim 1 or 2, characterized in that: The supply pipe includes a first straight pipe, a curved pipe connected to the first straight pipe, and a second straight pipe connected to the curved pipe. The supply pipe uses the first straight pipe as the supply section, and uses the curved pipe and the second straight pipe as the extension sections.
4. The heat exchanger distribution structure according to claim 3, characterized in that: The first straight tube is parallel to the second straight tube.
5. The heat exchanger distribution structure according to claim 4, characterized in that: The first straight tube and the second straight tube are arranged horizontally.
6. The heat exchanger distribution structure according to claim 1 or 2, characterized in that: One end of the at least one return manifold connected to the extension section of the supply pipe is not located at the supply section and is located at an end of the extension section, and the end is closed.
7. The heat exchanger distribution structure according to claim 1 or 2, characterized in that: The at least two distribution manifolds are perpendicular to the supply pipe and are equidistantly disposed on the supply section of the supply pipe.
8. The heat exchanger distribution structure according to claim 7, characterized in that: The distance between one end of the at least one return manifold connected to the supply section of the supply pipe and the at least two adjacent distribution manifolds is equal.
9. The heat exchanger distribution structure according to claim 8, characterized in that: The supply pipe includes a first straight pipe, a curved pipe connected to the first straight pipe, and a second straight pipe connected to the curved pipe. The supply pipe uses the first straight pipe as the supply section, and uses the curved pipe and the second straight pipe as the extension sections.
10. The heat exchanger distribution structure according to claim 9, characterized in that: One end of the at least one return manifold connected to the extension section of the supply pipe is not located at the supply section and is located at an end of the extension section, and the end is closed.