Heat exchange tube, heat exchanger, and air conditioner

Abstract

The present invention discloses a heat exchange tube, a heat exchanger and an air conditioner, and relates to the technical field of heat exchange equipment. Specifically, it comprises a tube body, and at least one spoiler assembly is arranged on the inner side wall of the tube body, and the spoiler assembly comprises: a conical groove arranged on the inner side wall of the tube body, which can make the refrigerant generate heat exchange bubbles at its vertex, and an edge of the conical groove away from the inlet of the tube body is perpendicular to the inlet to outlet direction of the tube body, so as to form a slope surface that can facilitate the bubbles to merge into the refrigerant. It is intended to increase the frequency of separation between the bubbles in the tube body and the tube body, and improve the spoiler effect of the bubbles on the surrounding fluid.

Description

Technical Field

[0001] The present invention relates to the field of heat exchange technology, and in particular to a heat exchange tube, a heat exchanger, and an air conditioner. Background Art

[0002] During the decades of development of the refrigeration industry, high-efficiency heat exchange tubes have been widely used in commercial and household air conditioners. Among them, the internally threaded tube has been proven through research and engineering practice that the pits, cracks and crevices on the tube wall of the heat exchange tube used for evaporation are the core points of vaporization. In the surface crack area, the liquid in the slit receives more heat than the liquid on the same horizontal plane. At the same time, it is also more conducive to the formation of a vaporization core through the residual gas in the slit.

[0003] According to bubble dynamics theory, only when the temperature of the outer wall of the heat exchange tube is higher than the evaporation temperature of the refrigerant can the liquid refrigerant evaporate into gaseous refrigerant. This is called wall superheat. The greater the superheat, the more intense the evaporation. At the same time, if the frequency of bubble detachment is greater, the disturbance effect of the bubble on the surrounding fluid will be stronger.

[0004] How to increase the frequency of separation between bubbles in the tube and the tube body to enhance the disturbing effect of bubbles on the surrounding fluid has become a technical problem that needs to be solved urgently. Summary of the invention

[0005] The main purpose of the present invention is to provide a heat exchange tube, a heat exchanger, and an air conditioner, aiming to increase the frequency of separation between bubbles in the tube body and the tube body, and to improve the turbulence effect of the bubbles on the surrounding fluid.

[0006] In order to achieve the above object, the present invention provides a heat exchange tube, comprising a tube body, wherein at least one spoiler assembly is provided on the inner side wall of the tube body, and the spoiler assembly comprises:

[0007] A conical groove is arranged on the inner wall of the tube body so that the refrigerant can generate heat exchange bubbles at its apex. An edge of the conical groove away from the inlet of the tube body is perpendicular to the direction from the inlet to the outlet of the tube body to form a slope surface that facilitates the bubbles to merge into the refrigerant.

[0008] In one embodiment of the present application, the tapered groove is in the shape of a quadrangular pyramid.

[0009] In one embodiment of the present application, the spoiler assembly further includes:

[0010] A separator for separating bubbles is arranged on the slope surface at the end along the direction from the inlet to the outlet of the tube body.

[0011] In one embodiment of the present application, the separator is T-shaped or O-shaped.

[0012] In one embodiment of the present application, the height of the partition is H3, 1.5 mm>H3>0.3 mm.

[0013] In one embodiment of the present application, the width of a side of the tapered groove away from the tube body entrance is H4, 1mm>H4>0.3mm.

[0014] In one embodiment of the present application, the height of the tapered groove is H1, 1mm>H1>0.5mm.

[0015] In one embodiment of the present application, the length of the tapered slot opening is H2, 3mm>H1>1.5mm.

[0016] In one embodiment of the present application, when there are two or more spoiler components, the two or more spoiler components are arranged spirally along the length direction of the tube body.

[0017] The present application also discloses a heat exchanger, comprising the heat exchange tube as described in any one of the above items.

[0018] The present application also discloses an air conditioner, comprising the heat exchange tube as described in any one of the above or the heat exchanger as described above.

[0019] By adopting the above technical solution, a conical groove is provided on the tube body, so that the refrigerant can generate bubbles after heat exchange at the bottom point of the conical groove. An edge of the conical groove away from the inlet of the tube body is perpendicular to the direction from the inlet to the outlet of the tube body, so that one surface of the conical groove is consistent with the flow direction of the refrigerant, so that the liquid refrigerant can push out the bubbles, increase the speed of the bubbles leaving the inner surface of the tube body, that is, increase the frequency of bubble detachment, and improve the turbulence effect of the bubbles on the surrounding fluid. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the first embodiment of the present invention.

[0022] Figure 2 It is a side cross-sectional view of the first embodiment of the present invention.

[0023] Figure 3 It is a top view of the first embodiment of the present invention. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention is described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the following specific embodiments are only used to explain the present invention and do not constitute a limitation to the present invention.

[0025] like Figures 1 to 3As shown, in order to achieve the above-mentioned purpose, the present invention proposes a heat exchange tube, including a tube body 20, wherein at least one spoiler component is provided on the inner side wall of the tube body 20, and the spoiler component includes:

[0026] A conical groove 30 is arranged on the inner wall of the tube body 20 so that the refrigerant can generate heat exchange bubbles at its apex. An edge of the conical groove 30 away from the inlet of the tube body 20 is perpendicular to the direction from the inlet to the outlet of the tube body 20 to form a slope surface 40 that facilitates the bubbles to merge into the refrigerant.

[0027] Specifically, a heat exchange tube includes at least one turbulent component inside the tube and arranged in the tube body 20, and the turbulent component is used to disturb the flow state of the refrigerant in the tube body 20 to improve the heat exchange efficiency of the refrigerant.

[0028] The tube body 20 is made of metal material, such as aluminum alloy material, alloy steel material, etc. The tube body 20 made of metal material has the advantages of strong supporting capacity, wear resistance, high heat exchange efficiency, etc. The tube body 20 can be used in a membrane heat exchanger.

[0029] The spoiler assembly includes a tapered groove 30 disposed on the inner wall of the tube body 20. The tapered groove 30 may be in the shape of a triangular pyramid, a quadrangular pyramid, a pentagonal pyramid, or the like.

[0030] When the tapered groove 30 is a triangular pyramid, the vertex of the triangular pyramid is the bottom point of the tapered groove 30. Through this placement, when the heat outside the tube body 20 is high, the heat will preferentially generate bubbles at the bottom point of the triangular pyramid, and as the volume of the bubbles changes, the bubbles will flow along the flow direction of the refrigerant, thereby achieving turbulence on the refrigerant, thereby improving the heat exchange efficiency.

[0031] When the conical groove 30 is a quadrangular pyramid, the vertex of the quadrangular pyramid is the bottom point of the conical groove 30. Through this placement, when the heat outside the tube body 20 is high, the heat will preferentially generate bubbles at the bottom point of the quadrangular pyramid, and as the volume of the bubbles changes, the bubbles will flow along the flow direction of the refrigerant, thereby achieving turbulence on the refrigerant, thereby improving the heat exchange efficiency.

[0032] When the conical groove 30 is a pentagonal pyramid, the vertex of the pentagonal pyramid is the bottom point of the conical groove 30. Through this placement, when the heat outside the tube body 20 is high, the heat will preferentially generate bubbles at the bottom point of the pentagonal pyramid, and as the volume of the bubbles changes, the bubbles will flow along the flow direction of the refrigerant, thereby achieving turbulence on the refrigerant, thereby improving the heat exchange efficiency.

[0033] In the present application, a quadrangular pyramid is preferred. Since the quadrangular pyramid is a pentahedron, when the quadrangular pyramid is used as the tapered groove 30, the vertex of the quadrangular pyramid is used as the bottom point of the tapered groove 30, and the bottom surface of the quadrangular pyramid is used as the entrance of the tapered groove 30. In this case, the arrangement of the tapered groove 30 on the inner wall of the tube body 20 can be facilitated.

[0034] One side of the conical groove 30 away from the entrance of the tube body 20 is perpendicular to the direction from the entrance to the exit of the tube body 20, so as to ensure that at least one surface of the conical groove 30 is completely attached to the side wall of the tube body 20. Since the groove is a conical groove 30, a slope surface 40 will be formed after connecting two points from the bottom point of the conical groove 30 to one side of the conical groove 30 away from the entrance of the tube body 20. When the refrigerant flows in the tube body 20, due to the high flow rate and low pressure, the bubbles generated at the bottom point of the conical groove 30 will converge with the liquid refrigerant, and the efficiency of bubble convergence is further improved through the slope surface 40. It is convenient for the liquid refrigerant to push out the bubbles, increase the speed of the bubbles detaching from the inner surface of the tube body 20, that is, increase the frequency of bubble detachment, and improve the turbulence effect of the bubbles on the surrounding fluid.

[0035] By adopting the above technical solution, by setting the conical groove 30 on the tube body 20, it is convenient for the refrigerant to generate bubbles after heat exchange at the bottom point of the conical groove 30. One side of the conical groove 30 away from the inlet of the tube body 20 is perpendicular to the direction from the inlet to the outlet of the tube body 20, so that one surface of the conical groove 30 is consistent with the flow direction of the refrigerant, so that the liquid refrigerant can easily push out the bubbles, increase the speed of the bubbles leaving the inner surface of the tube body 20, that is, increase the frequency of bubble detachment, and improve the turbulence effect of the bubbles on the surrounding fluid.

[0036] In one embodiment of the present application, the tapered groove 30 is in the shape of a quadrangular pyramid.

[0037] Specifically, the conical groove 30 is a quadrangular pyramid, and when the conical groove 30 is a quadrangular pyramid, the vertex of the quadrangular pyramid is the bottom point of the conical groove 30. Through this placement, when the heat outside the tube body 20 is high, the heat will preferentially generate bubbles at the bottom point of the quadrangular pyramid, and as the volume of the bubbles changes, the bubbles will flow along the flow direction of the refrigerant, thereby achieving turbulence on the refrigerant, thereby improving the heat exchange efficiency.

[0038] The above technical solution has a simple structure and is easy to implement.

[0039] In one embodiment of the present application, the spoiler assembly further includes:

[0040] A separator 10 for separating bubbles is disposed on the slope surface 40 along the end of the tube body 20 from the inlet to the outlet.

[0041] Specifically, the spoiler assembly further includes: a separator 10 .

[0042] The separator 10 is made of metal material, such as aluminum alloy material, alloy steel material, etc. The separator 10 made of metal material has the advantages of strong supporting ability and wear resistance. The separator 10 can be processed on the tube body 20 by a milling cutter. It is also possible to prefabricate the separator 10 and weld the separator 10 to the tube body 20. Or it can be installed on the tube body 20 in a detachable manner, such as screw connection, bolt connection, etc. The use of a detachable connection can improve the installation and disassembly of the separator 10 and facilitate subsequent maintenance. In this application, since it is used to realize refrigerant heat exchange, the separator 10 in this application is processed by a milling cutter.

[0043] The partition 10 is arranged on the slope surface 40 along the end of the tube body 20 from the inlet to the outlet, and is used to divide the bubbles flowing out of the slope surface 40, expand the disturbance of the bubble detachment to the surrounding fluid, and the separated bubbles detach again, causing secondary disturbance to the surrounding fluid, further enhancing boiling heat transfer.

[0044] The above technical solution has a simple structure and is easy to implement.

[0045] In one embodiment of the present application, the separator 10 is T-shaped or O-shaped.

[0046] Specifically, the separator 10 is T-shaped or O-shaped, and the T-shape or O-shape can improve its efficiency in dividing bubbles.

[0047] The above technical solution has a simple structure and is easy to implement.

[0048] In one embodiment of the present application, the height of the separator 10 is H3, 1.5 mm>H3>0.3 mm.

[0049] Specifically, the height of the separator 10 is set between 1.5 mm and 0.3 mm, which facilitates the separation of bubbles by the separator 10 and reduces the space occupied by the separator 10 in the tube body 20. The height of the separator 10 is preferably 1 mm.

[0050] The above technical solution has a simple structure and is easy to implement.

[0051] In one embodiment of the present application, the width of a side of the tapered groove 30 away from the entrance of the tube body 20 is H4, 1mm>H4>0.3mm.

[0052] Specifically, the width of one side of the tapered groove 30 away from the entrance of the tube body 20 is H4, and the width of the side is between 1 mm and 0.3 mm, and the width is preferably 0.7 mm, so as to facilitate the pushing out of the bubbles. The structure is simple and easy to implement.

[0053] In an embodiment of the present application, the height of the tapered groove 30 is H1, 1 mm>H1>0.5 mm.

[0054] Specifically, the height of the tapered groove 30 is H1, and the height of the tapered groove 30 is between 1 mm and 0.5 mm, which facilitates the formation of bubbles while avoiding the tapered groove 30 occupying the thickness of the side wall of the tube body 20 and reducing the strength of the side wall of the tube body 20. The structure is simple and easy to implement.

[0055] In one embodiment of the present application, the opening length of the tapered groove 30 is H2, 3mm>H1>1.5mm.

[0056] Specifically, the opening length of the tapered groove 30 is H2, which is between 3 mm and 1.5 mm, thereby reducing the space occupied by the tube body 20, and the structure is simple and easy to implement.

[0057] In an embodiment of the present application, when there are two or more spoiler components, the two or more spoiler components are arranged spirally along the length direction of the tube body 20 .

[0058] Specifically, when there are two or more spoiler components, the two or more spoiler components are arranged in a spiral along the length direction of the tube body 20 to facilitate the processing of the tube body 20. The inclination angle of the spiral is preferably 45 degrees. The length direction of the spoiler components is tangent to the spiral advancing direction.

[0059] The present application also discloses a heat exchanger, comprising the heat exchange tube as described in any one of the above items.

[0060] The present application also discloses an air conditioner, comprising the heat exchange tube as described in any one of the above or the heat exchanger as described above.

[0061] It should be noted that the terms used above are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0062] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0063] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A heat exchange tube, It is characterized in that It comprises a tube body, and at least one spoiler component is arranged on the inner side wall of the tube body, and the spoiler component comprises: A conical groove is provided on the inner side wall of the tube body so that the refrigerant can generate heat exchange bubbles at its bottom point. An edge of the conical groove away from the inlet of the tube body is perpendicular to the direction from the inlet to the outlet of the tube body to form a slope surface that facilitates the bubbles to merge into the refrigerant. The width of the edge of the conical groove away from the inlet of the tube body is H4, 1mm>H4>0.3mm; The spoiler assembly further includes a separator, which is arranged on the end of the slope surface along the direction from the inlet to the outlet of the tube body and is used to separate the bubbles flowing out of the slope surface.

2. The heat exchange tube according to claim 1, It is characterized in that The tapered groove is in the shape of a quadrangular pyramid.

3. The heat exchange tube according to claim 1, It is characterized in that The separator is T-shaped or O-shaped.

4. The heat exchange tube according to claim 1, It is characterized in that The height of the separator is H3, 1.5 mm>H3>0.3 mm.

5. The heat exchange tube according to claim 1, It is characterized in that The height of the tapered groove is H1, 1mm>H1>0.5mm.

6. The heat exchange tube according to claim 1, It is characterized in that The length of the tapered groove opening is H2, 3mm>H2>1.5mm.

7. The heat exchange tube according to claim 1, It is characterized in that When there are two or more spoiler components, the two or more spoiler components are arranged spirally along the length direction of the tube body.

8. A heat exchanger, It is characterized in that The heat exchange tube comprises the heat exchange tube as claimed in any one of claims 1 to 7.

9. An air conditioner, It is characterized in that It comprises the heat exchange tube according to any one of claims 1 to 7 or the heat exchanger according to claim 8.

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