CN211012616U - Micro-channel flat tube, heat exchanger and air conditioner - Google Patents

Abstract

The utility model relates to an air conditioner technical field particularly, relates to a flat pipe of microchannel, heat exchanger and air conditioner. The utility model provides a microchannel flat tube, along the thickness direction of microchannel flat tube, two relative sides of microchannel flat tube are continuous cambered surface. This microchannel flat tube can effectively improve heat transfer performance.

Description

Micro-channel flat tube, heat exchanger and air conditioner

Technical Field

The utility model relates to an air conditioner technical field particularly, relates to a flat pipe of microchannel, heat exchanger and air conditioner.

Background

In the prior art, the micro-channel flat tube has the advantages of small volume, light weight, compact structure and the like, but is limited by the structure and the size, and has the problem of poor heat exchange performance.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a flat pipe of microchannel, heat exchanger and air conditioner, it can effectively solve the relatively poor problem of the flat pipe heat transfer performance of microchannel.

The embodiment of the utility model is realized like this:

in a first aspect, the embodiment of the utility model provides a flat pipe of microchannel, along the thickness direction of the flat pipe of microchannel, two relative sides of the flat pipe of microchannel are continuous cambered surface.

In an alternative embodiment, the microchannel flat tube comprises a plurality of microchannels;

a plurality of microchannel follow the width direction of microchannel flat pipe interval arrangement in proper order to all extend along the length direction of microchannel flat pipe.

In an alternative embodiment, the cross-sectional profile of the microchannel is circular.

In an alternative embodiment, the microchannel flat tubes are U-shaped.

In an alternative embodiment, the curved surface comprises at least a first curved section and a second curved section along the width direction of the microchannel flat tube.

In an alternative embodiment, the first arcuate section is tangent to the second arcuate section, and the centers of the first arcuate section and the second arcuate section are located on either side of the microchannel flat tube.

In an alternative embodiment, the first and second arcuate sections have the same bend radius.

In an alternative embodiment, at least one microchannel is disposed on each of the first and second arcuate sections.

In a second aspect, an embodiment of the present invention provides a heat exchanger, which includes a micro-channel flat tube as in any one of the foregoing embodiments.

In a third aspect, an embodiment of the present invention provides an air conditioner, which includes a heat exchanger as in the foregoing embodiments.

The embodiment of the utility model provides a beneficial effect is:

this micro-channel flat tube sets up two relative sides through flat tube thickness direction with the micro-channel into continuous cambered surface to improve the heat transfer area of the flat tube of micro-channel, and then can improve the heat transfer performance of the flat tube of micro-channel.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a microchannel flat tube in an embodiment of the present invention;

FIG. 2 is a schematic view of the arrangement of the arc surface in the embodiment of the present invention;

FIG. 3 is a first metallographic image of a microchannel flat tube according to the prior art;

FIG. 4 is a second metallographic view of a prior art microchannel flat tube;

fig. 5 is a golden picture of the flat tube of the microchannel in the embodiment of the present invention.

100-microchannel flat tubes; 110-side; 111-cambered surface; 120-a microchannel; 112-a first arc-shaped subsection; 113-second arc-shaped subsection.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.

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, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 and 2, fig. 1 and 2 show a structure of a microchannel flat tube 100 according to an embodiment of the present invention.

This embodiment provides a microchannel flat tube 100, along microchannel flat tube 100's thickness direction, two relative sides 110 of microchannel flat tube 100 are continuous cambered surface 111.

When the two side surfaces 110 are provided as the arc surfaces 111, the arc-shaped profile parameters of the two side surfaces 110 are adapted so that the profile of the entire microchannel flat tube 100 in the width direction of the microchannel flat tube 100 is a continuous arc. Referring to fig. 1, arrows A, B and C in fig. 1 respectively show the thickness direction, the width direction and the length direction of the microchannel flat tube 100.

The operating principle of the microchannel flat tube 100 is as follows:

this microchannel flat tube 100 is through improving microchannel flat tube 100's heat transfer area to realize improving microchannel flat tube 100's heat transfer performance's effect. Specifically, along the thickness direction of this microchannel flat tube 100, set up two relative sides 110 in the thickness direction of microchannel flat tube 100 as continuous cambered surface 111 for under same structure, the heat transfer area increase of microchannel flat tube 100.

Based on the above-mentioned microchannel flat tube 100, the microchannel flat tube 100 is further provided with a plurality of microchannels 120. When the microchannels 120 are arranged, the extending direction of the microchannels 120 is consistent with the length direction of the microchannel flat tubes 100, and the microchannels 120 are sequentially arranged at intervals along the width direction of the microchannel flat tubes 100.

Further, in the prior art, a square hole structure is commonly adopted for a microchannel (not shown in the form of an attached drawing) of a microchannel flat tube (not shown in the form of an attached drawing), and the structure causes the microchannel flat tube (not shown in the form of an attached drawing) to be easy to crack and deform during use; referring to fig. 3 and 4, fig. 3 and 4 are schematic gold phase diagrams of a microchannel flat tube 100 in the prior art; the golden phase diagram is a golden phase diagram of a flat pipe (not shown in the form of an attached drawing) used for a certain period in the prior art, and it is obvious from the diagram that after the flat pipe is used for a certain period, cracks (shown in the ellipses D and E in fig. 3 and 4) and deformation occur inside the flat pipe, and as the use time increases, the part of the cracks can affect the use performance and the service life of the flat pipe (not shown in the form of the attached drawing), so that the use cost increases.

For the above reasons, in the present embodiment, in order to reduce the use cost of the microchannel flat tube 100 and prolong the service life, especially reduce the cracks and deformation caused by the impact of crushed stones during the use process, the microchannel 120 is configured as a circular channel, so that the cross-sectional profile of the microchannel 120 is circular.

Referring to fig. 5, fig. 5 is a gold phase diagram of the microchannel flat tube 100 in the present embodiment; as can be seen from the gold phase diagram of the microchannel flat tube 100, the microchannel flat tube 100 has small deformation and no crack.

From this, can derive from above-mentioned content, compare in the microchannel flat pipe among the prior art (not shown with the form of drawing), microchannel flat pipe 100 that this embodiment provided, when improving heat transfer performance, its ability of nai rubble impact is better, and the deflection is little simultaneously, and then can prolong this microchannel flat pipe 100's life.

It should be noted that the metallographic diagram in the above description is obtained by performing a test after the microchannel flat tube 100 in the present embodiment and a microchannel flat tube (not shown in the form of the drawings) in the prior art are used for the same time under the same usage environment.

In the present embodiment, the curved surface 111 at least includes a first curved branch 112 and a second curved branch 113 along the width direction of the microchannel flat tube 100. It should be noted that, since the arc surfaces 111 of the two side surfaces 110 in the thickness direction of the microchannel flat tube 100 are adapted to each other, only the arrangement of the arc surfaces 111 on one side surface 110 will be described here.

Through the setting of two continuous first arc subsection 112 and second arc subsection 113, can further increase microchannel flat tube 100's heat transfer area, simultaneously, for making cambered surface 111 profile on this side 110 continuous, so can make first arc subsection 112 tangent with second arc subsection 113, and the centre of a circle of first arc subsection 112 and second arc subsection 113 is located microchannel flat tube 100's both sides respectively, thereby make first arc subsection 112 inconsistent with the 113 crooked direction of second arc subsection, so that this microchannel flat tube 100 is the bending of wave type, in order to further increase its heat transfer area, in order to improve heat transfer performance.

Next, in the present embodiment, when the first arc-shaped subsection 112 and the second arc-shaped subsection 113 are disposed, and the first arc-shaped subsection 112 is tangent to the second arc-shaped subsection 113, and the centers of the circle of the first arc-shaped subsection 112 and the circle of the second arc-shaped subsection 113 are respectively located at two sides of the microchannel flat tube 100, the bending radius of the first arc-shaped subsection 112 and the second arc-shaped subsection 113 may be different. In other embodiments of the present invention, the bending radius of the first arc subsection 112 and the second arc subsection 113 may be the same.

In addition, based on the arrangement of the first arc-shaped subsection 112 and the second arc-shaped subsection 113, when the micro-channels 120 are arranged, at least one micro-channel 120 is arranged on each of the first arc-shaped subsection 112 and the second arc-shaped subsection 113.

Further, as can be seen from the above, in other embodiments of the present invention, when two side surfaces 110 in the thickness direction of the micro-channel flat tube 100 are set as the arc surfaces 111, so that the outline of the micro-channel flat tube 100 in the width direction thereof is a continuous arc, the micro-channel flat tube 100 may be integrally U-shaped.

Based on foretell flat pipe of microchannel 100, the embodiment of the utility model provides a heat exchanger, the heat exchanger includes flat pipe of microchannel 100 as in the arbitrary one of aforementioned embodiment.

Based on foretell heat exchanger, the embodiment of the utility model provides an air conditioner, air conditioner include as the heat exchanger of aforementioned embodiment.

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.

Claims (8)

1. The utility model provides a microchannel flat tube which characterized in that:

along the thickness direction of the micro-channel flat tube, two opposite side surfaces of the micro-channel flat tube are both continuous cambered surfaces;

along the width direction of the micro-channel flat tube, the cambered surface at least comprises a first arc-shaped subsection and a second arc-shaped subsection; the first arc-shaped subsection is tangent to the second arc-shaped subsection, and the circle centers of the first arc-shaped subsection and the second arc-shaped subsection are respectively located on two sides of the microchannel flat tube.

2. The microchannel flat tube of claim 1, wherein:

the microchannel flat tube comprises a plurality of microchannels;

a plurality of the microchannel is along the width direction of the microchannel flat tube is arranged at intervals in sequence and extends along the length direction of the microchannel flat tube.

3. The microchannel flat tube of claim 2, wherein:

the cross-sectional profile of the microchannel is circular.

4. A microchannel flat tube according to any one of claims 1 to 3 wherein:

the micro-channel flat tube is U-shaped.

5. The microchannel flat tube of claim 1, wherein:

the first arcuate section and the second arcuate section have the same bend radius.

6. The microchannel flat tube of claim 1, wherein:

at least one microchannel is disposed on both the first and second arcuate sections.

7. A heat exchanger, characterized by:

the heat exchanger comprises the microchannel flat tube as set forth in any one of claims 1 to 6.

8. An air conditioner, characterized in that:

the air conditioner includes the heat exchanger as claimed in claim 7.

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