CN113819787A

CN113819787A - Flat heat exchange tube and heat exchanger with same

Info

Publication number: CN113819787A
Application number: CN202010567679.8A
Authority: CN
Inventors: 魏文建; 马文勇
Original assignee: Zhejiang Dunan Thermal Technology Co Ltd
Current assignee: Zhejiang Dunan Thermal Technology Co Ltd
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2021-12-21
Also published as: US20230228505A1; WO2021254010A1; JP2023525660A; EP4170272A1; EP4170272A4

Abstract

The invention provides a heat exchange flat tube and a heat exchanger with the same, wherein the heat exchange flat tube comprises: a first plate body; the second plate body is arranged opposite to the first plate body, a fluid channel is formed between the second plate body and the first plate body, and the fluid channel is provided with an inlet and an outlet; wherein, be provided with the throttle structure between first plate body and the second plate body, throttle structure and fluid passage intercommunication, throttle structure is located the entrance, and the throttle structure includes a plurality of bending sections that communicate in proper order. Through the technical scheme provided by the invention, the technical problem of poor throttling effect of the heat exchange flat tube in the prior art can be solved.

Description

Flat heat exchange tube and heat exchanger with same

Technical Field

The invention relates to the technical field of heat exchanger devices, in particular to a heat exchange flat tube and a heat exchanger with the same.

Background

At present, a fluid channel and a convex hull structure are arranged in a heat exchange flat tube in the prior art, and a certain turbulence effect can be caused on a fluid medium in the fluid channel through the convex hull structure. Generally, insert the income portion of heat transfer flat pipe to in the collector pipe to make fluid channel and torrent pipe intercommunication, the income portion among the prior art mostly is located heat transfer flat pipe end portion, and the portion of entrying is the porous structure.

However, this is not favorable for throttling the inflow, so that the throttling effect of the flat heat exchange tubes is poor.

Disclosure of Invention

The invention mainly aims to provide a heat exchange flat tube and a heat exchanger with the same, and aims to solve the technical problem that the throttling effect of the heat exchange flat tube in the prior art is poor.

In order to achieve the above object, according to one aspect of the present invention, there is provided a heat exchange flat tube including: a first plate body; the second plate body is arranged opposite to the first plate body, a fluid channel is formed between the second plate body and the first plate body, and the fluid channel is provided with an inlet and an outlet; wherein, be provided with the throttle structure between first plate body and the second plate body, throttle structure and fluid passage intercommunication, throttle structure is located the entrance, and the throttle structure includes a plurality of bending sections that communicate in proper order.

Further, the throttling structure comprises a first throttling groove, and the first throttling groove is arranged on the first plate body.

Furthermore, the first throttling groove comprises a first groove section, a first arc-shaped connecting section, a second groove section and a second arc-shaped connecting section which are sequentially communicated, one end, far away from the first arc-shaped connecting section, of the first groove section forms a throttling opening of the first throttling groove, the second arc-shaped connecting section is located at an inlet, and one end, far away from the second groove section, of the second arc-shaped connecting section forms an outflow opening of the first throttling groove.

Furthermore, the first plate body comprises a first main plate and a first throttle plate, the first throttle plate is arranged at the end part of the first main plate, and the first throttle groove is positioned on the first throttle plate; the second plate body comprises a second main plate and a second throttle plate, and the second throttle plate is arranged at the end part of the second main plate; the second main plate is arranged opposite to the first main plate, and the second throttle plate is arranged opposite to the first throttle plate, so that the first throttle groove and the second throttle plate form a first throttle channel.

Further, the throttle orifice of the first throttle groove is located at a side portion of the first main plate.

Further, the lateral part of first mainboard is provided with first portion of bending, and the lateral part of second mainboard is provided with the second portion of bending, and the second portion of bending sets up in order to form joint portion with first portion of bending relatively, is provided with the joint mouth with joint looks adaptation on the pressure manifold, and joint portion card is established at the card kneck to make first throttle groove insert to the pressure manifold in.

Furthermore, the throttling structure also comprises a second throttling groove, the second throttling groove is arranged on the second plate body and is positioned at the inlet, the second throttling groove is communicated with the fluid channel, and the second throttling groove is arranged opposite to the first throttling groove, so that the second throttling groove and the first throttling groove form a second throttling channel.

Furthermore, the flow direction of the outlet of the first throttling groove and the flow direction in the fluid channel are arranged at a first preset angle; and/or the flow direction at the outflow port of the second throttling groove and the flow direction in the fluid channel are arranged at a second preset angle.

Furthermore, the fluid channel is a U-shaped channel, the inlet and the outlet are located at the same end of the heat exchange flat tube, the inlet and the outlet are arranged at intervals, and the throttling port of the first throttling groove is arranged towards one side close to the inlet.

According to another aspect of the invention, a heat exchanger is provided, and the heat exchanger comprises a heat exchange flat pipe.

By applying the technical scheme of the invention, the throttling structure is arranged on the heat exchange flat tube and is communicated with the fluid channel, so that liquid can conveniently enter the fluid channel after being throttled by the plurality of bent sections of the throttling structure, and the throttling resistance can be increased so as to better enhance the throttling effect. Therefore, the technical problem that the throttling effect of the heat exchange flat tube in the prior art is poor can be solved through the technical scheme provided by the invention.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, 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 is a schematic structural view of a first plate provided according to an embodiment of the present invention;

fig. 2 shows a schematic structural view of a second plate body provided with a second throttle groove according to an embodiment of the present invention;

fig. 3 shows a schematic structural view of a second plate body provided with no second throttle groove according to an embodiment of the present invention;

FIG. 4 shows a schematic structural view of a heat exchange flat tube having a first throttle slot and a second throttle slot provided in accordance with an embodiment of the present invention;

FIG. 5 shows an enlarged view at A in FIG. 4;

fig. 6 shows a schematic structural diagram of a heat exchange flat tube with a first throttle groove according to an embodiment of the present invention;

FIG. 7 shows an enlarged view at B in FIG. 6;

fig. 8 is a schematic structural diagram illustrating a heat exchange flat tube and a collector tube provided according to an embodiment of the present invention;

FIG. 9 shows a schematic structural diagram of a heat exchanger provided in accordance with an embodiment of the present invention;

FIG. 10 illustrates a schematic view of another angle of a heat exchanger provided in accordance with an embodiment of the present invention;

fig. 11 shows an enlarged view at C in fig. 10;

fig. 12 shows an exploded view of a heat exchanger provided according to an embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. a first plate body; 11. a first throttle groove; 111. a first groove section; 112. a first arcuate connecting section; 113. a second groove section; 114. a second arcuate connecting section; 115. a choke; 12. a first main board; 121. a first bending portion; 13. a first throttle plate; 20. a second plate body; 21. a second main board; 211. a second bending portion; 22. a second throttle plate; 23. a second throttle groove; 30. a header pipe; 40. a fin; 50. a side plate; 60. and (6) taking over.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1 to 8, a first embodiment of the present invention provides a flat heat exchanger tube, which includes a first plate 10 and a second plate 20. The second plate body 20 is disposed opposite to the first plate body 10, and specifically, the first plate body 10 and the second plate body 20 may be welded together, and a fluid passage having an inlet and an outlet is formed between the second plate body 20 and the first plate body 10. Wherein, be provided with the throttle structure between first plate body 10 and the second plate body 20, throttle structure and fluid passage intercommunication, throttle structure is located the entrance, and the throttle structure includes a plurality of bending sections that communicate in proper order.

Adopt the flat heat transfer pipe that this embodiment provided, owing to be provided with the throttle structure on the flat heat transfer pipe, and throttle structure and fluid passage intercommunication. Therefore, liquid entering the heat exchange flat tube is firstly throttled by the plurality of bending sections of the throttling structure, and then the throttled liquid enters the fluid channel. By adopting the arrangement mode, the throttling resistance can be increased, so that the throttling effect is improved, the refrigerant in the collecting pipe 30 can be more fully mixed and more uniformly distributed to each heat exchange flat pipe, and the heat exchange flat pipe in the embodiment is particularly suitable for being applied to an evaporator. Consequently, through the flat pipe of heat transfer that this embodiment provided, can solve the not good technical problem of throttle effect of the flat pipe of heat transfer among the prior art. Simultaneously, can avoid the situation of throttle structure at length direction overlength through a plurality of sections of bending, and then avoid the flat tub of whole length increase too much condition of heat transfer.

Specifically, the throttling structure in the present embodiment includes a first throttling groove 11, and the first throttling groove 11 is disposed on the first plate body 10. By adopting the structure, the liquid can be conveniently throttled through the first throttling groove 11, and particularly, the flow area of the first throttling groove 11 is far smaller than that in the fluid channel so as to ensure the throttling effect. Meanwhile, the first throttling groove 11 may be a strip-shaped groove structure, and the first throttling groove 11 is also an arc-shaped groove structure.

In this embodiment, the first throttling groove 11 includes a first groove section 111, a first arc-shaped connecting section 112, a second groove section 113, and a second arc-shaped connecting section 114, which are sequentially connected, wherein one end of the first groove section 111, which is far away from the first arc-shaped connecting section 112, forms a throttling opening 115 of the first throttling groove 11, the second arc-shaped connecting section 114 is located at an inlet, and one end of the second arc-shaped connecting section 114, which is far away from the second groove section 113, forms an outflow opening of the first throttling groove 11. Specifically, the throttling port 115 of the first throttling groove 11 forms a flow inlet of the heat exchange flat pipe, and liquid enters the first throttling groove 11 from the throttling port 115 to realize throttling. First groove section 111, first arc linkage segment 112, second groove section 113 and second arc linkage segment 114 in this embodiment form similar S-shaped structure, can guarantee the effective throttle length of throttle structure under the condition that does not increase the whole length of heat transfer flat pipe like this to be convenient for improve throttle effect. Meanwhile, by arranging the first arc-shaped connecting section 112 and the second arc-shaped connecting section 114, the situation of poor liquid flow at the bending part can be avoided, so that the liquid can smoothly flow into the fluid channel.

Specifically, the first plate body 10 in this embodiment includes a first main plate 12 and a first throttle plate 13, the first throttle plate 13 is disposed at an end portion of the first main plate 12, and the first throttle groove 11 is located on the first throttle plate 13. The second plate body 20 includes a second main plate 21 and a second throttle plate 22, and the second throttle plate 22 is provided at an end portion of the second main plate 21. The second main plate 21 is disposed opposite to the first main plate 12, and the second throttle plate 22 is disposed opposite to the first throttle plate 13, so that the first throttle groove 11 and the second throttle plate 22 form a first throttle passage. Specifically, the second throttle plate 22 here is of a flat plate structure, and the flow surface of the first throttle passage thus formed is of a half-flow cross-sectional structure.

In the present embodiment, the chokes 115 of the first choke groove 11 are located at the side of the first main plate 12. Specifically, the first throttle plate 13 is a plate having an arc-shaped protrusion, the second throttle plate 22 has the same shape as the first throttle plate 13, the throttle opening 115 of the first throttle groove 11 is located at the arc-shaped protrusion position of the first throttle plate 13, and the throttle opening 115 of the first throttle groove 11 is located at the side of the arc-shaped protrusion. With this arrangement, the position of the first throttle groove 11 can be made to conform to the structural shapes of the first throttle plate 13 and the second throttle plate 22.

Specifically, the lateral part of first mainboard 12 is provided with first bending portion 121, and the lateral part of second mainboard 21 is provided with the second bending portion 211, and the second bending portion 211 sets up in order to form joint portion with first bending portion 121 relatively, is provided with the joint mouth with joint portion looks adaptation on the pressure manifold 30, and joint portion card is established at the card kneck to make first throttle groove 11 insert to pressure manifold 30 in. Specifically, the first bending portion 121 in this embodiment has a first bending opening and a second bending opening that are oppositely disposed, and the first bending opening and the second bending opening are oppositely located at two sides of the first main board 12; the second bending portion 211 has a third bending opening and a fourth bending opening that are oppositely disposed, and the third bending opening and the fourth bending opening are oppositely located at two sides of the second main board 21. In order to facilitate the clamping, the first bending portion 121 and the second bending portion 211 may have the same structure. Adopt above-mentioned structural setting, can be convenient for make being connected of heat transfer flat pipe and pressure manifold 30, improve the stability that the structure set up.

In another embodiment, the throttle structure further comprises a second throttle groove 23, the second throttle groove 23 is disposed on the second plate body 20, the second throttle groove 23 is located at the inlet, the second throttle groove 23 communicates with the fluid passage, and the second throttle groove 23 is disposed opposite to the first throttle groove 11 such that the second throttle groove 23 and the first throttle groove 11 form a second throttle passage. The flow area of the second throttle channel is increased compared to the first throttle channel, i.e. the throttle area is increased, and the flow area of the second throttle channel may be a full flow cross-section. By adopting the structure, the throttling effect can be improved, and the refrigerant can be fully mixed to be more uniformly distributed in each heat exchange flat tube. Specifically, the first throttle groove 11 and the second throttle groove 23 may have the same structure, or the first throttle groove 11 and the second throttle groove 23 may have different structures, as long as at least a part of the first throttle groove 11 and the second throttle groove 23 are communicated with each other to form the second throttle passage. Preferably, the first throttle groove 11 and the second throttle groove 23 in this embodiment have the same structure. Specifically, the second plate body 20 may have the same structure as the first plate body 10, and the second throttling groove 23 is located on the second throttling plate 22, and in a specific use, both the first throttling plate 13 and the second throttling plate 22 are arranged in the header 30, so that pre-throttling is realized in the header 30 through the first throttling plate 13 and the second throttling plate 22, and the throttling effect is further improved.

In another embodiment, the flow direction at the outflow opening of the first throttle groove 11 may be arranged at a first predetermined angle to the flow direction in the fluid passage; alternatively, the flow direction at the outlet of the second throttle groove 23 and the flow direction in the fluid passage may be set at a second predetermined angle; alternatively, the flow direction at the outlet of the first throttle groove 11 and the flow direction in the fluid passage may be set at a first predetermined angle, and the flow direction at the outlet of the second throttle groove 23 and the flow direction in the fluid passage may be set at a second predetermined angle. With this arrangement, the refrigerant in the first throttle groove 11 and the second throttle groove 23 can be made to flow into the fluid passage easily. Specifically, the flow direction of the flow passage herein may extend along the extending direction of the plate body, and since the throttling structure has a plurality of bending sections which are oppositely arranged, the outlet is deviated from the central line position of the main plate body, that is, the outlet is located at the end of the main plate body, and the outlet is located at a position close to the side portion. In this way, if the flow direction at the outlet of the first throttling groove 11 is made to coincide with the direction in the fluid passage, and the flow direction at the outlet of the second throttling groove 23 is also made to coincide with the direction in the fluid passage, the liquid throttled by the throttling structure cannot be sufficiently and uniformly supplied to each part of the fluid passage, so that the refrigerant cannot be uniformly distributed to each part of the fluid passage, and it is inconvenient to better exchange heat with the refrigerant. And because the circulation direction of the outflow port of the first throttling groove 11 and the circulation direction in the fluid channel are in the first preset angle setting, the circulation direction of the outflow port of the second throttling groove 23 and the circulation direction in the fluid channel are in the second preset angle setting, the structure which is obliquely arranged enables the refrigerant to enter the fluid channel at a certain angle, so that the refrigerant is fully filled in the fluid channel, the distribution uniformity of the refrigerant is improved, and the heat exchange effect is further improved.

Specifically, have the vortex convex closure that a plurality of intervals set up in fluid passage, a plurality of vortex convex closures homoenergetic can play the vortex effect to the refrigerant in the fluid passage to be convenient for carry out the heat transfer better.

In another embodiment, the fluid channel may be a U-shaped channel, the inlet and the outlet are located at the same end of the heat exchange flat tube, the inlet and the outlet are spaced apart, and the orifice 115 of the first orifice groove 11 is located toward the side close to the inlet. By adopting the structure, the compactness of the structure arrangement can be conveniently improved, and the structure layout is optimized.

Specifically, the first throttling groove 11 in the above embodiment protrudes from the outlet, so that the first throttling groove 11 can extend into the collecting pipe 30, so that the refrigerant can be pre-throttled in the collecting pipe 30 by the first throttling groove 11, and the throttling effect is improved.

As shown in fig. 9 to 12, another embodiment of the present invention provides a heat exchanger, where the heat exchanger includes a flat heat exchange tube, and the flat heat exchange tube is the flat heat exchange tube provided in the foregoing embodiment. The heat exchanger in this embodiment further includes a header 30, fins 40, an edge plate 50, and a connection pipe 60, and specifically, the header 30 is connected to the heat exchange flat pipe, so that the header 30 is communicated with the fluid passage. The fins 40 are arranged on the heat exchange flat tubes, the side plates 50 are located at the ends of the heat exchange flat tubes, and the connecting pipes 60 are arranged on the collecting main 30 to be connected with other connecting pieces through the connecting pipes 60.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects: the throttling resistance is increased, the throttling effect is enhanced, and the refrigerant in the collecting pipe is more fully mixed and more uniformly distributed to each heat exchange flat pipe.

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 application 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 application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; 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 protection of the present application is not to be construed as being limited.

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

1. The utility model provides a flat heat transfer pipe, its characterized in that, flat heat transfer pipe includes:

a first plate body (10);

a second plate body (20) arranged opposite to the first plate body (10), a fluid channel being formed between the second plate body (20) and the first plate body (10), the fluid channel having an inlet and an outlet;

the throttling structure is arranged between the first plate body (10) and the second plate body (20), the throttling structure is communicated with the fluid channel, the throttling structure is located at the inlet, and the throttling structure comprises a plurality of bending sections which are sequentially communicated.

2. Heat exchanger flat tube according to claim 1, characterised in that the throttling structure comprises a first throttling groove (11), which first throttling groove (11) is provided on the first plate body (10).

3. The heat exchange flat tube according to claim 2, characterized in that the first throttling groove (11) comprises a first groove section (111), a first arc-shaped connecting section (112), a second groove section (113) and a second arc-shaped connecting section (114) which are sequentially communicated, wherein one end of the first groove section (111) far away from the first arc-shaped connecting section (112) forms a throttling opening (115) of the first throttling groove (11), the second arc-shaped connecting section (114) is located at the inlet, and one end of the second arc-shaped connecting section (114) far away from the second groove section (113) forms an outflow opening of the first throttling groove (11).

4. Heat exchanger flat tube according to claim 2, characterised in that the first plate body (10) comprises a first main plate (12) and first throttle plates (13), the first throttle plates (13) being arranged at the ends of the first main plate (12), the first throttle grooves (11) being located on the first throttle plates (13); the second plate body (20) comprises a second main plate (21) and a second throttle plate (22), and the second throttle plate (22) is arranged at the end part of the second main plate (21); wherein the second main plate (21) is arranged opposite to the first main plate (12), and the second throttle plate (22) is arranged opposite to the first throttle plate (13), so that the first throttle groove (11) and the second throttle plate (22) form a first throttle channel.

5. Heat exchanger flat tube according to claim 4, characterised in that the chokes (115) of the first choked groove (11) are located at the side of the first main plate (12).

6. The heat exchange flat tube according to claim 4, characterized in that a first bending portion (121) is arranged at a side portion of the first main plate (12), a second bending portion (211) is arranged at a side portion of the second main plate (21), the second bending portion (211) is arranged opposite to the first bending portion (121) to form a clamping portion, a clamping port matched with the clamping portion is arranged on the header, and the clamping portion is clamped at the clamping port to enable the first throttling groove (11) to be inserted into the header.

7. The heat exchange flat tube according to any one of claims 2 to 6, characterized in that the throttling structure further comprises a second throttling groove (23), the second throttling groove (23) is arranged on the second plate body (20), the second throttling groove (23) is positioned at the inlet, the second throttling groove (23) is communicated with the fluid passage, and the second throttling groove (23) is arranged opposite to the first throttling groove (11) so that the second throttling groove (23) and the first throttling groove (11) form a second throttling passage.

8. The heat exchange flat tube according to claim 7,

the flow direction of the outlet of the first throttling groove (11) and the flow direction in the fluid channel are arranged at a first preset angle; and/or the presence of a gas in the gas,

the flow direction at the outflow opening of the second throttling groove (23) and the flow direction in the fluid channel are arranged at a second preset angle.

9. Heat exchanger flat tube according to one of claims 2 to 6, characterised in that the fluid channel is a U-shaped channel, the inlet and the outlet are located at the same end of the heat exchanger flat tube, the inlet and the outlet are spaced apart, and the throttling (115) of the first throttling groove (11) is located towards the side close to the inlet.

10. A heat exchanger, characterized in that, the heat exchanger includes a heat exchange flat tube, the heat exchange flat tube of any one of claims 1 to 9.