CN215810424U

CN215810424U - Distribution pipe and heat exchanger with same

Info

Publication number: CN215810424U
Application number: CN202120921457.1U
Authority: CN
Inventors: 王冠军; 兰兆忠
Original assignee: Zhejiang Dunan Thermal Technology Co Ltd
Current assignee: Zhejiang Dunan Thermal Technology Co Ltd
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2022-02-11
Anticipated expiration: 2031-04-29

Abstract

The utility model provides a distribution pipe and a heat exchanger with the same, wherein the distribution pipe is provided with an inlet, an outlet and a circulation channel, the inlet and the outlet are respectively communicated with the circulation channel, the outlet is provided with a plurality of outlets, the outlets are arranged on the side wall of the distribution pipe, the inner wall of the distribution pipe is provided with a flow resisting structure, and the flow resisting structure is positioned in the circulation channel. Through the technical scheme that this application provided, can solve the gas-liquid two-phase refrigerant among the prior art and mix inhomogeneous problem.

Description

Distribution pipe and heat exchanger with same

Technical Field

The utility model relates to the technical field of heat exchangers, in particular to a distribution pipe and a heat exchanger with the same.

Background

At present, the existing heat exchanger mainly includes a flow-collecting inlet pipe, a flow-collecting outlet pipe, a flat pipe and a distribution pipe, wherein two ends of the flat pipe are respectively communicated with the flow-collecting inlet pipe and the flow-collecting outlet pipe, and the distribution pipe is arranged in the flow-collecting inlet pipe. A plurality of distribution holes are formed in the existing distribution pipe at intervals along the axis direction and communicated with a flow collecting inlet pipe, and the distribution effect of a refrigerant in the flow collecting inlet pipe is improved through the structure. However, in the existing scheme, when the flow rate of the refrigerant is changed, especially when the flow rate of the refrigerant is reduced, the liquid refrigerant and the gaseous refrigerant are not uniformly mixed due to the inertia effect, and the heat exchange effect of the heat exchanger is further affected.

SUMMERY OF THE UTILITY MODEL

The utility model provides a distribution pipe and a heat exchanger with the same, and aims to solve the problem that gas-liquid two-phase refrigerants are not uniformly mixed in the prior art.

According to an aspect of the present invention, there is provided a distribution pipe having an inlet, an outlet, and a flow passage, the inlet and the outlet being respectively communicated with the flow passage, the outlet having a plurality of outlets provided on a side wall of the distribution pipe, an inner wall of the distribution pipe having a flow blocking structure, and the flow blocking structure being located in the flow passage. Through setting up above-mentioned structure, can utilize the choked flow structure to cause the hindrance to liquid refrigerant, reduce the motion difference of liquid refrigerant and gaseous state refrigerant, make gas-liquid two-phase refrigerant can the misce bene and flow from the export.

Further, the distributing pipe includes a plurality of unit pipes that connect in order, and every unit pipe has the through-hole that runs through the setting, and the through-hole of a plurality of unit pipes communicates in order to form the circulation passageway, all is provided with export and choked flow structure on every unit pipe. Therefore, the refrigerant can be ensured to flow in the flow channel and simultaneously bear certain resistance, and the flow rate of the refrigerant, particularly the flow speed of the liquid refrigerant, is reduced.

Furthermore, the unit pipe has first end and the second end of relative setting, and the choked flow structure includes the turn-ups, and the turn-ups sets up the second end at the unit pipe, and the turn-ups extends towards the axis of unit pipe. Through this above-mentioned structure, can guarantee the uniformity of unit pipe turn-ups and surface to let the unit pipe have good suitability in the use.

Further, the extending direction of the flanging is perpendicular to the axis of the unit pipe. The design ensures that the flanging has certain stability and further limits the flow of the refrigerant. The structure ensures that the flow of the refrigerant at the flanging position is less than that at the middle part, thereby having certain control effect on the flow of the refrigerant.

Further, the inner wall of the first end is sized to fit the outer wall of the second end. When can let a plurality of unit pipes connect in order like this, the cooperation effect between the unit pipe is more perfect. When a plurality of unit pipes can be connected in order, two adjacent unit pipes are matched tightly, and the sealing effect between the two adjacent unit pipes is ensured.

Further, the first ends of the downstream unit pipes are wrapped outside the second ends of the upstream unit pipes in two adjacent unit pipes. The connection mode enables the connection of a plurality of unit pipes to be firm, and the sealing effect can be improved.

Furthermore, the flanging is of an annular structure, and the flanging and the unit pipes are coaxially arranged. Therefore, the flow choking effect of the flanging on the refrigerant can be improved.

Further, the plurality of outlets are arranged at intervals along the axial direction of the distribution pipe. This ensures that the outlets are on the same side of the dispensing tube and may exhibit the structural integrity.

Further, in the fluid flow direction, the distance between two adjacent outlets in the axial direction is gradually reduced; alternatively, the plurality of outlets are arranged axially equidistantly on the side wall of the distribution pipe. The structure can keep the flow rate of the refrigerant flowing out of each outlet as consistent as possible, and improve the distribution effect of the refrigerant.

According to another aspect of the present invention, there is provided a heat exchanger comprising a distribution tube as provided above.

By applying the technical scheme of the utility model, the distribution pipe is provided with an inlet, an outlet and a flow passage, the inlet and the outlet are respectively communicated with the flow passage, the outlets are provided with a plurality of outlets which are arranged on the side wall of the distribution pipe, the inner wall of the distribution pipe is provided with a flow resisting structure, and the flow resisting structure is positioned in the flow passage. Utilize the choked flow structure can separate the fender to liquid refrigerant to reduce when the refrigerant flow changes, to the influence that liquid refrigerant caused, make liquid refrigerant and gaseous refrigerant can evenly mix and flow from the export, and then can guarantee the heat transfer effect of heat exchanger.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 shows a schematic structural view of a distribution pipe provided by the present invention;

FIG. 2 is a sectional view showing a plurality of unit pipes provided by the present invention after being connected;

fig. 3 shows a schematic structural diagram of the heat exchanger provided by the utility model.

Wherein the figures include the following reference numerals:

10. an inlet;

20. an outlet;

30. a flow-through channel;

40. a unit pipe; 41. a first end; 42. a second end; 43. flanging;

51. a header pipe; 52. and (4) flat tubes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 and 2, an embodiment of the present invention provides a distribution pipe having an inlet 10, an outlet 20, and a flow passage 30, wherein the inlet 10 and the outlet 20 are respectively communicated with the flow passage 30, the outlet 20 has a plurality of outlets 20, the plurality of outlets 20 are disposed on a side wall of the distribution pipe, an inner wall of the distribution pipe has a flow blocking structure, and the flow blocking structure is located in the flow passage 30. Through setting up above-mentioned structure, can utilize the choked flow structure to cause the hindrance to liquid refrigerant, reduce the motion difference of liquid refrigerant and gaseous state refrigerant, make gas-liquid two-phase refrigerant can the misce bene and flow out from export 20.

Through the technical scheme that this application provided, this distributing pipe has import 10, export 20 and circulation passageway 30, import 10 and export 20 respectively with circulation passageway 30 intercommunication, export 20 has a plurality ofly, a plurality of exports 20 set up on the lateral wall of distributing pipe, the inner wall of distributing pipe has the choked flow structure, and the choked flow structure is located circulation passageway 30. Through setting up above-mentioned structure for the refrigerant can flow out from a plurality of exports 20, can not receive the influence of flow, thereby has reached good minute liquid effect.

Further, the distribution pipe includes a plurality of unit pipes 40 connected in sequence, each unit pipe 40 has a through hole formed therethrough, the through holes of the plurality of unit pipes 40 are communicated in sequence to form a circulation passage 30, and each unit pipe 40 is provided with an outlet 20 and a flow blocking structure. Wherein the distribution pipe also can be integrative structure, in this embodiment, set up the distribution pipe into a plurality of unit pipe 40, so can be convenient for process to can in time adjust the length of distribution pipe according to the structure of different heat exchangers. Each unit pipe 40 is provided with a flow blocking structure, so that the refrigerant can be ensured to flow in the flow channel 30 and also to be subjected to certain resistance, and the flow rate of the refrigerant, especially the flow speed of the liquid refrigerant, is reduced.

Wherein the unit tubes 40 may be formed by punching, and adjacent two unit tubes 40 may be connected by brazing.

Specifically, the unit tube 40 has a first end 41 and a second end 42 disposed opposite to each other, and the second end 42 of the unit tube 40 is provided with a flange 43, and the flange 43 extends toward the axis of the unit tube 40. Through the structure, the consistency of the position of the unit pipe 40 flanging 43 and the outer surface of the unit pipe 40 can be ensured, so that the unit pipe 40 has good applicability in the using process. Moreover, the flanging 43 has simple structure, convenient processing and low processing cost. Specifically, the flow area of the middle portion of the unit tube 40 is larger than the flow area of the position where the burring 43 of the unit tube 40 is located. Through the structure, the flow of the refrigerant at the flanging 43 is smaller than that at the middle part, so that a certain control effect on the flow of the refrigerant is achieved.

Wherein, the extending direction of the flange 43 and the axis of the unit tube 40 can be set to be acute angle, right angle or obtuse angle. In the present embodiment, the direction of extension of the flanges 43 is perpendicular to the axis of the unit tube 40. By the design, the flanging 43 has certain stability and is not easy to deform, and the flow speed of the liquid refrigerant can be well limited.

Specifically, the inner wall of the first end 41 is sized to fit the outer wall of the second end 42. When can let a plurality of unit pipes 40 connect in order like this, two adjacent unit pipes 40 cooperate closely, guarantee the sealed effect between two adjacent unit pipes 40.

The two adjacent unit tubes 40 may be connected by fitting end surfaces thereof, or by inserting the two unit tubes. In the present embodiment, of the adjacent two unit tubes 40, the first end 41 of the downstream unit tube 40 is wrapped outside the second end 42 of the upstream unit tube 40. Such a coupling manner enables the plurality of unit tubes 40 to be coupled and fastened, and can improve a sealing effect.

In this embodiment, the flange 43 has an annular structure, and the flange 43 is disposed coaxially with the unit tube 40. Therefore, the flow resisting effect of the flanging 43 on the refrigerant can be improved.

The outlet 20 may be disposed along the circumferential direction of the distribution pipe, or along the axial direction of the distribution pipe. In the present embodiment, the plurality of outlets 20 are arranged at intervals along the axial direction of the distribution pipe. This ensures that the outlet 20 is on the same side of the dispensing tube and may exhibit the structural integrity.

Further, in the fluid flow direction, the interval between the adjacent two outlets 20 in the axial direction gradually decreases; alternatively, the plurality of outlets 20 are arranged on the side wall of the distribution pipe at equal intervals in the axial direction. This configuration makes it possible to keep the flow rate of the refrigerant flowing out of each outlet 20 as uniform as possible, thereby improving the refrigerant distribution effect.

As shown in fig. 3, another embodiment of the present application provides a heat exchanger including the distribution pipe provided in the above embodiment. Specifically, the heat exchanger comprises collecting pipes 51 and flat pipes 52, the flat pipes 52 are respectively communicated with the two collecting pipes 51, and the distributing pipe is located on one of the collecting pipes 51.

Through the device that this application provided, utilize the choked flow structure to carry out the separation to the intraductal refrigerant, can reduce the flow difference between liquid refrigerant and the gaseous state refrigerant when the flow changes, make the two-phase refrigerant misce bene of gas-liquid and from export 20, guaranteed the heat transfer effect of refrigerant, and then can guarantee the heat transfer effect of heat exchanger. The scheme has the advantages of simple structure, convenience in processing, low cost and suitability for popularization and use.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The distribution pipe is characterized by comprising an inlet (10), an outlet (20) and a circulation channel (30), wherein the inlet (10) and the outlet (20) are communicated with the circulation channel (30) respectively, the outlet (20) is provided with a plurality of outlets (20) arranged on the side wall of the distribution pipe, the inner wall of the distribution pipe is provided with a flow blocking structure, and the flow blocking structure is positioned in the circulation channel (30).

2. The distribution pipe according to claim 1, wherein the distribution pipe comprises a plurality of unit pipes (40) connected in sequence, each unit pipe (40) has a through hole formed therethrough, the through holes of the unit pipes (40) are communicated in sequence to form the flow channel (30), and each unit pipe (40) is provided with the outlet (20) and the flow blocking structure.

3. The distribution pipe according to claim 2, wherein the unit pipe (40) has a first end (41) and a second end (42) which are oppositely arranged, and the flow blocking structure comprises a flange (43), the flange (43) is arranged at the second end (42) of the unit pipe (40), and the flange (43) extends towards the axis of the unit pipe (40).

4. The distribution pipe according to claim 3, wherein the direction of extension of the flanges (43) is perpendicular to the axis of the unit pipes (40).

5. The distribution pipe according to claim 3, wherein the inner wall of the first end (41) is dimensioned to fit the outer wall of the second end (42).

6. The distribution pipe according to claim 3, wherein, of two adjacent unit pipes (40), the first end (41) of the downstream unit pipe (40) is wrapped outside the second end (42) of the upstream unit pipe (40).

7. The distribution pipe according to claim 3, wherein the flange (43) is of an annular configuration, and the flange (43) is coaxially arranged with the unit pipe (40).

8. The distribution pipe according to claim 1, wherein a plurality of said outlets (20) are spaced along the axial direction of said distribution pipe.

9. Distributor pipe according to claim 8, wherein the spacing in axial direction between two adjacent outlets (20) decreases progressively in the direction of fluid flow; or, a plurality of said outlets (20) are arranged axially at equal intervals on the side wall of said distribution pipe.

10. A heat exchanger, characterized in that it comprises a distributor tube according to any of claims 1 to 9.