CN212390898U

CN212390898U - Liquid separation structure and heat exchanger

Info

Publication number: CN212390898U
Application number: CN202021921496.3U
Authority: CN
Inventors: 魏文建; 梁新宇
Original assignee: Zhejiang Dunan Thermal Technology Co Ltd
Current assignee: Zhejiang Dunan Thermal Technology Co Ltd
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2021-01-22
Anticipated expiration: 2030-09-04

Abstract

The utility model provides a divide liquid structure and heat exchanger, divide the liquid structure to include: the liquid inlet is arranged towards the axial direction of the collecting pipe and is used for inputting a refrigerant; the liquid separating net is arranged in the collecting pipe and provided with a plurality of through holes, and the liquid separating net is positioned in the conveying direction of the liquid inlet. By adopting the scheme, the refrigerant entering the collecting pipe from the liquid inlet can contact the liquid separating net, and the gas-phase and liquid-phase refrigerants can be fully mixed after being throttled by the through holes of the liquid separating net. The uniformly mixed refrigerant continues to flow into the flat tubes, so that the distribution uniformity and the heat exchange effect of the refrigerant can be improved.

Description

Liquid separation structure and heat exchanger

Technical Field

The utility model relates to a heat exchanger technical field particularly, relates to a liquid separation structure and heat exchanger.

Background

The existing micro-channel heat exchanger is widely applied in the field of air-conditioning refrigeration, mainly comprises three parts, namely a collecting pipe, a flat pipe and a fin, wherein the collecting pipe is vertically arranged or horizontally arranged and is divided into a vertical micro-channel heat exchanger and a horizontal micro-channel heat exchanger. When the refrigerant flows in the horizontally arranged header, there is a pressure loss due to gravity.

The refrigerant entering the collecting pipe is usually in a gas state and liquid state mixed form, and the refrigerant is not easily and uniformly distributed into the flat pipes, so that the heat exchange effect is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a divide liquid structure and heat exchanger to improve the homogeneity of refrigerant distribution in the heat exchanger.

In order to achieve the above object, according to an aspect of the present invention, the present invention provides a liquid separation structure, including: the liquid inlet is arranged towards the axial direction of the collecting pipe and is used for inputting a refrigerant; the liquid separating net is arranged in the collecting pipe and provided with a plurality of through holes, and the liquid separating net is positioned in the conveying direction of the liquid inlet.

By adopting the scheme, the refrigerant entering the collecting pipe from the liquid inlet can contact the liquid separating net, and the gas-phase and liquid-phase refrigerants can be fully mixed after being throttled by the through holes of the liquid separating net. The uniformly mixed refrigerant continues to flow into the flat tubes, so that the distribution uniformity and the heat exchange effect of the refrigerant can be improved.

Further, the liquid separation net is of a conical cylinder structure, an opening of the conical cylinder structure faces the liquid inlet, and the periphery of the conical cylinder structure is connected with the inner wall of the collecting pipe. The liquid separating net is set into a conical cylinder structure, so that the liquid separating net has a larger surface area and thus has a larger contact area with the refrigerant, and the gas-phase fluid and the liquid-phase fluid are fully mixed.

Furthermore, the liquid separation net is of an oval plate-shaped structure, the liquid separation net is obliquely arranged relative to the axis of the collecting pipe, and the periphery of the liquid separation net is connected with the inner wall of the collecting pipe. By adopting the scheme, the liquid separation net has a simple structure, and the surface area of the liquid separation net can be increased, so that the liquid separation net has a larger contact area with the refrigerant, and the mixing uniformity of the refrigerant is improved. In this embodiment, the entire cross section is filled with the liquid separating net in the radial direction of the collecting pipe, so that the liquid separating effect can be improved.

Furthermore, the liquid distribution nets are multiple and are arranged at intervals along the axial direction of the collecting pipe. Therefore, after the refrigerant is contacted with the liquid separation nets at different positions, the effect of mixing gas-phase fluid and liquid-phase fluid can be realized. By adopting the scheme, the refrigerant can be uniformly distributed in the whole length direction of the collecting pipe under the condition that the length of the collecting pipe is large, and the phenomenon of uneven liquid distribution at the rear end of the collecting pipe can be avoided.

Furthermore, the liquid separation net is of a semicircular plate-shaped structure, and the arc-shaped edge of the liquid separation net is connected with the inner wall of the collecting pipe. Through the arrangement, the liquid distribution net can be reliably connected with the collecting pipe.

Furthermore, the liquid separating structure also comprises a plurality of clapboards arranged in the collecting pipe, and the clapboards are connected with the liquid separating nets in a one-to-one correspondence manner; each liquid separation net and the corresponding partition plate form a circular plate structure, and the periphery of the circular plate structure is connected with the inner wall of the collecting pipe. Through the arrangement, the connection between the liquid separating net and the collecting pipe is convenient to realize. Wherein, the clapboard is of a non-porous structure.

Further, the liquid separation structure further comprises: the connecting plate is arranged in the collecting pipe, the connecting plate extends along the axial direction of the collecting pipe, and each liquid distribution net is connected with the connecting plate. Through setting up the connecting plate, be convenient for a plurality of branch liquid net arrange and assemble.

Furthermore, the liquid separation net is of a semicircular plate-shaped structure, and a gap is formed between the connecting plate and the inner wall of the collecting pipe. Although the liquid separating net cannot fill the whole cross section in the radial direction of the collecting pipe, the rest gaps are small, and the small gaps also have throttling effect and cannot weaken the liquid separating effect of the liquid separating net.

Furthermore, the liquid distribution nets are obliquely arranged relative to the axis of the collecting pipe, the liquid distribution nets are multiple, the inclination directions of two adjacent liquid distribution nets are different, and the liquid distribution nets are connected end to form a wavy structure. Therefore, under the condition of large length of the collecting pipe, the refrigerant can be matched with liquid separating nets at different positions in the whole length direction of the collecting pipe, so that the refrigerant can be uniformly distributed at different positions, and the phenomenon of nonuniform liquid separation at the rear end of the collecting pipe is avoided. In the scheme, the contact area between the liquid separation nets and the refrigerant is large, and the liquid separation effect is good.

According to the utility model discloses an on the other hand provides a heat exchanger, the heat exchanger includes a plurality of flat pipes and foretell minute liquid structure, every the one end of flat pipe all with the pressure manifold intercommunication of minute liquid structure.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural diagram of a heat exchanger according to an embodiment of the present invention;

FIG. 2 shows an enlarged view of a portion of the heat exchanger of FIG. 1;

fig. 3 shows a partial enlarged view of a heat exchanger according to a second embodiment of the present invention;

fig. 4 shows a schematic structural diagram of a heat exchanger provided by a third embodiment of the present invention;

FIG. 5 shows an enlarged view of a partially assembled construction of the heat exchanger of FIG. 4;

fig. 6 shows a schematic structural diagram of a heat exchanger provided by the fourth embodiment of the present invention;

FIG. 7 shows an enlarged view of a partially assembled construction of the heat exchanger of FIG. 6;

FIG. 8 shows a radial partial cross-sectional view of the heat exchanger of FIG. 7;

fig. 9 shows a schematic structural diagram of a heat exchanger provided in the fifth embodiment of the present invention;

FIG. 10 shows an enlarged view of a partially assembled construction of the heat exchanger of FIG. 9;

fig. 11 shows a radial partial cross-sectional view of the heat exchanger in fig. 10.

Wherein the figures include the following reference numerals:

10. a header pipe; 11. a liquid inlet; 20. a liquid separation net; 21. a through hole; 30. a partition plate; 40. a connecting plate; 50. an inlet pipe; 60. flat tubes; 70. a collection pipe; 80. an outlet pipe; 90. and a fin.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 to fig. 2, the first embodiment of the present invention provides a liquid separation structure and a heat exchanger, including: the liquid inlet 11 is arranged towards the axial direction of the collecting pipe 10, and the liquid inlet 11 is used for inputting a refrigerant; the liquid separating net 20 is arranged in the collecting pipe 10, the liquid separating net 20 is provided with a plurality of through holes 21, and the liquid separating net 20 is positioned in the conveying direction of the liquid inlet 11.

By adopting the scheme, the refrigerant entering the collecting pipe 10 from the liquid inlet 11 of the collecting pipe 10 can contact with the liquid separating net 20, and after the refrigerant with gas-liquid two phases is throttled by the through holes 21 of the liquid separating net 20, the gas phase and the liquid phase of the refrigerant can be fully mixed. The uniformly mixed refrigerant continues to flow into the flat tubes 60 of the heat exchanger, so that the distribution uniformity and the heat exchange effect of the refrigerant in the heat exchanger can be improved.

Specifically, the liquid separating net 20 is a conical cylinder structure, the opening of the conical cylinder structure faces the liquid inlet 11, and the periphery of the conical cylinder structure is connected with the inner wall of the collecting pipe 10. The liquid separating net 20 is arranged in a cone-shaped cylinder structure, so that the liquid separating net 20 has a large surface area and thus has a large contact area with the refrigerant, and the gas-phase fluid and the liquid-phase fluid are fully mixed.

As shown in fig. 3, in the second embodiment, the liquid separation net 20 has an elliptical plate-like structure, the liquid separation net 20 is disposed obliquely with respect to the axis of the header 10, and the periphery of the liquid separation net 20 is connected to the inner wall of the header 10. By adopting the scheme, the liquid separation net 20 has a simple structure, and the surface area of the liquid separation net 20 can be increased, so that the liquid separation net has a larger contact area with the refrigerant, and the mixing uniformity of the refrigerant is improved. In this embodiment, the entire cross section is filled with the liquid separation net 20 in the radial direction of the header 10, so that the liquid separation effect can be improved.

As shown in fig. 4 and 5, in the third embodiment, there are a plurality of liquid separation nets 20, and the plurality of liquid separation nets 20 are provided at intervals in the axial direction of the header 10. Therefore, the effect of mixing gas phase fluid and liquid phase fluid can be achieved after the refrigerant is contacted with the liquid separation net 20 at different positions. By adopting the scheme, under the condition that the length of the collecting pipe 10 is large, the refrigerant can be uniformly distributed in the whole length direction of the collecting pipe 10, and the phenomenon that liquid separation is not uniform at the rear end of the collecting pipe 10 is avoided.

Specifically, the liquid separating net 20 is in a semicircular plate-shaped structure, and the arc-shaped edge of the liquid separating net 20 is connected with the inner wall of the collecting pipe 10. Through the arrangement, the liquid separation net 20 can be reliably connected with the collecting pipe 10.

Further, the liquid separating structure also comprises a plurality of partition plates 30 arranged in the collecting pipe 10, and the plurality of partition plates 30 are correspondingly connected with the plurality of liquid separating nets 20 one by one; wherein, each liquid separation net 20 and the corresponding baffle 30 form a circular plate structure, and the periphery of the circular plate structure is connected with the inner wall of the collecting pipe 10. The connection of the liquid separation net 20 and the collecting pipe 10 is facilitated through the arrangement. The separator 30 has a non-porous structure.

As shown in fig. 6 to 8, in the fourth embodiment, the liquid separation structure further includes: and the connecting plates 40 are arranged in the collecting main 10, the connecting plates 40 extend along the axial direction of the collecting main 10, and each liquid separation net 20 is connected with the connecting plates 40. The arrangement and assembly of the plurality of dispensing nets 20 is facilitated by the provision of the connecting plate 40.

Specifically, the liquid separating net 20 is in a semicircular plate-shaped structure, and a gap is formed between the connecting plate 40 and the inner wall of the collecting pipe 10. Although the liquid separation net 20 cannot fill the whole cross section in the radial direction of the collecting main 10, the rest gaps are small, and the small gaps also have throttling effect and cannot reduce the liquid separation effect of the liquid separation net 20.

As shown in fig. 9 to 11, in the fifth embodiment, the liquid separation nets 20 are obliquely arranged relative to the axis of the collecting main 10, a plurality of liquid separation nets 20 are arranged, the inclination directions of two adjacent liquid separation nets 20 are different, and the plurality of liquid separation nets 20 are connected end to form a wave-shaped structure. In this way, for the case that the length of the collecting pipe 10 is large, the refrigerant can be matched with the liquid separating nets 20 at different positions in the whole length direction of the collecting pipe 10, so that the refrigerant can be uniformly distributed at different positions, and the phenomenon that liquid separation is not uniform at the rear end of the collecting pipe 10 can be avoided. In this scheme, a plurality of minute liquid net 20 and refrigerant area of contact are big, divide liquid effectual. Specifically, the valleys of the wavy structure are connected to the inner wall of the header 10, or the ends of the wavy structure are connected to the ends of the header 10. The corrugated structure and the collector tube 10 may be connected by welding.

In this embodiment, the liquid separating structure further comprises an inlet pipe 50, and the inlet pipe 50 is communicated with the liquid inlet 11. The inlet pipe 50 is used to input the refrigerant.

The utility model also provides a heat exchanger, heat exchanger include a plurality of flat pipe 60 and foretell branch liquid structure, every flat pipe 60's one end all with divide the pressure manifold 10 intercommunication of liquid structure. By adopting the scheme, the refrigerant entering the collecting pipe 10 from the liquid inlet 11 of the collecting pipe 10 can contact with the liquid separating net 20, and after the refrigerant with gas-liquid two phases is throttled by the through holes 21 of the liquid separating net 20, the gas phase and the liquid phase of the refrigerant can be fully mixed. The uniformly mixed refrigerant continues to flow into the flat tubes 60 of the heat exchanger, so that the distribution uniformity and the heat exchange effect of the refrigerant in the heat exchanger can be improved.

Optionally, the heat exchanger further includes a collecting pipe 70 (equivalent to another collecting pipe), the collecting pipe 70 is disposed in parallel with the collecting pipe 10, and the other end of each flat pipe 60 is communicated with the collecting pipe 70. The heat exchanger further includes an outlet pipe 80, and the outlet pipe 80 communicates with the collecting pipe 70 to intensively output the refrigerant. The heat exchanger further comprises a plurality of fins 90, and the fins 90 are arranged between every two adjacent flat pipes 60, so that the heat exchange area can be increased.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by 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.

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.

Unless specifically stated 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. 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 should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, 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 simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted 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 if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

Claims

1. A liquid separation structure, comprising:

the liquid inlet is arranged in the axial direction of the collecting pipe (10), and the liquid inlet (11) is used for inputting a refrigerant;

the liquid distribution net (20) is arranged in the collecting pipe (10), the liquid distribution net (20) is provided with a plurality of through holes (21), and the liquid distribution net (20) is located in the conveying direction of the liquid inlet (11).

2. Liquid separating structure according to claim 1, wherein the liquid separating net (20) is a conical cylinder structure, the opening of the conical cylinder structure faces the liquid inlet (11), and the periphery of the conical cylinder structure is connected with the inner wall of the collecting pipe (10).

3. Liquid separating structure according to claim 1, wherein the liquid separating net (20) is an oval plate-shaped structure, the liquid separating net (20) is obliquely arranged relative to the axis of the collecting pipe (10), and the periphery of the liquid separating net (20) is connected with the inner wall of the collecting pipe (10).

4. The structure for distributing liquid according to claim 1, wherein said liquid distribution net (20) is plural, and said plural liquid distribution nets (20) are arranged at intervals along the axial direction of said header (10).

5. The structure for separating liquid according to claim 4, wherein said liquid separating net (20) is a semicircular plate-shaped structure, and the arc-shaped edge of said liquid separating net (20) is connected with the inner wall of said collecting pipe (10).

6. The structure of separating liquid according to claim 4, characterized in that said structure further comprises a plurality of baffles (30) disposed in said header (10), wherein a plurality of said baffles (30) and a plurality of said separating nets (20) are connected in a one-to-one correspondence; each liquid separation net (20) and the corresponding partition plate (30) form a circular plate structure, and the periphery of the circular plate structure is connected with the inner wall of the collecting pipe (10).

7. The structure of claim 4, further comprising:

the connecting plates (40) are arranged in the collecting pipe (10), the connecting plates (40) extend along the axial direction of the collecting pipe (10), and each liquid distribution net (20) is connected with the connecting plates (40).

8. Liquid separating structure according to claim 7, characterized in that the liquid separating net (20) is a semi-circular plate-like structure, and a gap is arranged between the connecting plate (40) and the inner wall of the collecting main (10).

9. The liquid separating structure according to claim 1, wherein said liquid separating net (20) is obliquely arranged relative to the axis of said collecting main (10), said liquid separating net (20) is multiple, the inclination direction of two adjacent liquid separating nets (20) is different, and multiple liquid separating nets (20) are connected end to form a wave-shaped structure.

10. A heat exchanger, characterized in that, the heat exchanger comprises a plurality of flat tubes (60) and the liquid separation structure of any one of claims 1 to 9, one end of each flat tube (60) is communicated with a collecting pipe (10) of the liquid separation structure.