Heat exchange tube, evaporator and refrigerator
By setting spaced fins on the outer wall of the refrigerator heat exchange tube to form an angle connection, the gap or breakpoint between the fins and the heat exchange tube is solved, and the thermal conductivity and heat exchange efficiency are improved.
Patent Information
- Application Number
- CN202323487257.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-20
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2033-12-20
AI Technical Summary
In the existing refrigerator refrigeration system, there is a gap or welding breakpoint between the fins and the heat exchange tube, which weakens the thermal conductivity and reduces the heat exchange efficiency.
The first heat exchange fins arranged in the circumferential and axial distance are arranged on the outer wall surface of the heat exchange tube. The connecting end is fixedly connected to the outer wall surface, and the free end extends toward the outer wall surface to form an angle to enhance the fin and The connection strength and thermal conductivity of the heat exchange tube.
By thinning the flow boundary layer, destroying the temperature boundary layer, the heat exchange efficiency of the refrigerant and the external airflow in the heat exchange tube is significantly improved, the connection stability is enhanced and the risk of fins falling off is avoided.
Smart Images
Figure CN222165821U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of refrigeration equipment, for example, to a heat exchange tube, an evaporator and a refrigerator. Background Art
[0002] At present, the refrigeration system of a refrigerator mainly includes a compressor, a condenser, an evaporator, and a capillary assembly, etc. The condenser and the evaporator utilize the phenomenon of absorbing or releasing heat when the refrigerant changes between the liquid phase and the gas phase to achieve cooling or heating of the air passing through.
[0003] In the refrigerator of the related art, the evaporator is arranged at the back of the refrigerator. The evaporator includes a heat exchange tube and a fin sleeved on the outside of the heat exchange tube. The fin is fixed to the heat exchange tube by welding, or after the fin is sleeved on the heat exchange tube, the heat exchange tube is inflated to fix the fin to the heat exchange tube.
[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:
[0005] Since the fins need to be connected to the entire circumference of the heat exchange tube, there are inevitably gaps or welding breakpoints between the fins and the wall of the heat exchange tube. The gaps and breakpoints weaken the heat conduction between the heat exchange tube and the fins.
[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content
[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.
[0008] The embodiments of the present disclosure provide a heat exchange tube, an evaporator and a refrigerator, which improve the connection function of the fins to the heat exchange tubes and enhance the heat conduction effect between the fins and the heat exchange tubes, so as to improve the heat exchange efficiency of the heat exchange tubes.
[0009] In some embodiments, the heat exchange tube includes a heat exchange tube body and multiple groups of first heat exchange fins, wherein the heat exchange tube body has an outer wall surface; the first heat exchange fins are arranged on the outer wall surface, and the multiple groups of heat exchange fins are arranged at intervals along the circumferential direction, each group of heat exchange fins includes multiple first heat exchange fins arranged at intervals along the same axis, and the first heat exchange fins include a connecting end and a free end, the connecting end is fixedly connected to the outer wall surface, and the free end extends in a direction away from the outer wall surface so that an angle is formed between the first heat exchange fin and the outer wall surface.
[0010] In some embodiments, the heat exchange tube body and the first heat exchange fin are integrally formed.
[0011] In some embodiments, the width of the connecting end is greater than the width of the free end.
[0012] In some embodiments, the angle ranges from 5° to 60°.
[0013] In some embodiments, the heat exchange tube body includes a straight section and a bent section connected in sequence; the heat exchange tube further includes: a second heat exchange fin, which is sleeved on the outer circumference of the straight section.
[0014] In some embodiments, a plurality of second heat exchange fins are arranged at intervals.
[0015] In some embodiments, the straight section includes a first sub-heat exchange section and a second sub-heat exchange section, and the first sub-heat exchange section is located above the second sub-heat exchange section; the second heat exchange fin includes: a first sub-fin, which is sleeved on the first sub-heat exchange section; a second sub-fin, which is sleeved on the second sub-heat exchange section; the spacing between adjacent first sub-fins is smaller than the spacing between adjacent second sub-fins.
[0016] In some embodiments, the heat exchange tube further includes: a low-temperature resistant and anti-corrosion coating, which is coated on the surface of the heat exchange tube body and / or the first heat exchange fin.
[0017] In some embodiments, the evaporator comprises the heat exchange tube as described above.
[0018] In some embodiments, the refrigerator comprises the evaporator as described above.
[0019] The heat exchange tube, evaporator and refrigerator provided by the embodiments of the present disclosure can achieve the following technical effects:
[0020] By arranging first heat exchange fins on the outer wall surface of the heat exchange tube body and arranged at intervals along the circumferential direction and axial direction thereof, the connection area between the first heat exchange fin and the heat exchange tube body can be reduced, thereby increasing the connection strength between the first heat exchange fin and the heat exchange tube body, and increasing the heat conductivity between the first heat exchange fin and the heat exchange tube body; further, the connection end of the first heat exchange fin is fixedly connected to the outer wall surface, and the free end extends in a direction away from the outer wall surface, so that an angle is formed between the first heat exchange fin and the outer wall surface. In this way, when the airflow flows through the heat exchange tube body, the first heat exchange fin can disturb the airflow and increase the fluctuation of the fluid at the outer wall surface, thereby thinning the flow boundary layer, destroying the temperature boundary layer, and strengthening the heat exchange outside the tube, thereby improving the heat exchange efficiency between the refrigerant in the heat exchange tube and the airflow outside the heat exchange tube.
[0021] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:
[0023] Figure 1 is a schematic diagram of a heat exchange tube provided in an embodiment of the present disclosure;
[0024] Figure 2 yes Figure 1 A partial enlarged schematic diagram of
[0025] Figure 3 is a schematic structural diagram of another heat exchange tube provided in an embodiment of the present disclosure;
[0026] Figure 4 yes Figure 3 A partial enlarged schematic diagram of
[0027] Figure 5 It is a schematic diagram of the structure of another heat exchange tube provided in an embodiment of the present disclosure.
[0028] Reference numerals:
[0029] 100, heat exchange tube body; 110, outer wall surface; 120, straight section; 121, first sub-heat exchange section; 122, second sub-heat exchange section; 130, bent section;
[0030] 200, first heat exchange fin; 210, connection end; 220, free end;
[0031] 300, second heat exchange fin; 310, first sub-fin; 320, second sub-fin. DETAILED DESCRIPTION
[0032] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.
[0033] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.
[0034] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.
[0035] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.
[0036] Unless otherwise stated, the term "plurality" means two or more.
[0037] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.
[0038] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.
[0039] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.
[0040] At present, the refrigeration system of a refrigerator mainly includes a compressor, a condenser, an evaporator, and a capillary assembly, etc. The condenser and the evaporator utilize the phenomenon of absorbing or releasing heat when the refrigerant changes between the liquid phase and the gas phase to achieve cooling or heating of the air passing through.
[0041] In the refrigerator of the related art, the evaporator is arranged at the back of the refrigerator. The evaporator includes a heat exchange tube and a fin sleeved on the outside of the heat exchange tube. The fin is fixed to the heat exchange tube by welding, or after the fin is sleeved on the heat exchange tube, the heat exchange tube is inflated to fix the fin to the heat exchange tube.
[0042] However, since the fins need to be connected to the entire circumference of the heat exchange tube, gaps or welding breakpoints inevitably exist between the fins and the heat exchange tube wall, and the gaps and breakpoints weaken the heat conduction between the heat exchange tube and the fins.
[0043] Therefore, the embodiment of the present disclosure provides a heat exchange tube, which improves the connection effect of the fins on the heat exchange tube and enhances the heat conduction effect between the fins and the heat exchange tube, so as to improve the heat exchange efficiency of the heat exchange tube.
[0044] Combination Figures 1 to 5 As shown, the heat exchange tube provided by the embodiment of the present disclosure includes a heat exchange tube body 100 and multiple groups of first heat exchange fins. The heat exchange tube body 100 has an outer wall surface 110; multiple groups of first heat exchange fins are arranged on the outer wall surface 100, and multiple groups of heat exchange fins are arranged at intervals along the circumference of the heat exchange tube body 100. Each group of heat exchange fins includes multiple first heat exchange fins 200 arranged at intervals along the same axis. The first heat exchange fin 200 includes a connecting end 210 and a free end 220. The connecting end 210 of the first heat exchange fin 200 is fixedly connected to the outer wall surface 110, and the free end 220 of the first heat exchange fin 200 extends in a direction away from the outer wall surface 110, so that an angle is formed between the first heat exchange fin 200 and the outer wall surface 110 of the heat exchange tube body 100.
[0045] Among them, the heat exchange tube body 100 is a circular tube, including an inner wall surface and an outer wall surface 110. The inner wall surface encloses the flow space of the heat exchange medium (i.e., refrigerant). When the air flows through the outer wall surface 110, heat is exchanged with the heat exchange medium (i.e., refrigerant), that is, the heat exchange medium absorbs the heat of the air to achieve cooling of the air.
[0046] By setting the first heat exchange fin 200 on the outer wall surface 110, the heat exchange area between the air and the heat exchange tube can be increased, thereby enhancing the heat exchange efficiency of the heat exchange tube. Optionally, a plurality of first heat exchange fins 200 are arranged at intervals along the circumference and axial direction of the heat exchange tube body 100; in this way, compared with the fins connected to the heat exchange tube body 100 in the related art, the connection surface between the first heat exchange fin 200 and the outer wall surface of the heat exchange tube body 100 is small, thereby avoiding the generation of gaps or welding breakpoints between the first heat exchange fin 200 and the outer wall surface 110, thereby improving the connection strength between the first heat exchange fin 200 and the heat exchange tube body 110, and ensuring the heat conduction effect between the first heat exchange fin 200 and the heat exchange tube body 110.
[0047] Optionally, the connection end 210 of the first heat exchange fin 200 is fixedly connected to the outer wall surface 110, and the free end 220 of the first heat exchange fin 200 extends in a direction away from the outer wall surface 110, so that an angle is formed between the first heat exchange fin 200 and the outer wall surface 110 of the heat exchange tube body 100. In other words, the first heat exchange fin 200 is formed on the outer wall surface 110, connected to the heat exchange tube body 100 through the connection end 210, and the free end 220 extends in a direction away from the outer wall surface 110, which can form a disturbance to the air, and the fluctuation of the air fluid at the outer wall surface 110, thereby thinning the flow boundary layer, destroying the temperature boundary layer, and strengthening the heat exchange outside the tube, thereby improving the heat exchange efficiency between the refrigerant in the heat exchange tube and the air outside the heat exchange tube.
[0048] By using the heat exchange tube provided by the embodiment of the present disclosure, by arranging first heat exchange fins arranged at intervals along the circumferential direction and axial direction of the heat exchange tube body on the outer wall surface of the heat exchange tube body, the connection area between the first heat exchange fin and the heat exchange tube body can be reduced, thereby improving the connection strength between the first heat exchange fin and the heat exchange tube body, and improving the heat conductivity between the first heat exchange fin and the heat exchange tube body; further, the connection end of the first heat exchange fin is fixedly connected to the outer wall surface, and the free end extends in a direction away from the outer wall surface to form an angle between the first heat exchange fin and the outer wall surface. In this way, when the airflow flows through the heat exchange tube body, the first heat exchange fin can disturb the airflow and increase the fluctuation of the fluid at the outer wall surface, thereby thinning the flow boundary layer, destroying the temperature boundary layer, and strengthening the heat exchange outside the tube, thereby improving the heat exchange efficiency between the refrigerant in the heat exchange tube and the airflow outside the heat exchange tube.
[0049] Optionally, the heat exchange tube body 100 is integrally formed with the first heat exchange fin 200. That is, the first heat exchange fin 200 extends outward from the outer wall surface 110 and is integrally connected with the heat exchange tube body 100. In this way, by integrally forming the heat exchange tube body 100 and the first heat exchange fin 200, it is possible to avoid a gap or welding breakpoint between the two, thereby improving the connection strength between the two, improving the connection stability between the first heat exchange fin 200 and the heat exchange tube body 100, ensuring the safety of the first heat exchange fin 200, and avoiding the first heat exchange fin 200 from falling off or falling off, thereby increasing the heat exchange area between the air and the heat exchange tube, and improving the heat exchange efficiency of the heat exchange tube.
[0050] Optionally, the first heat exchange fins 200 may be cut and formed on the outer wall surface 110 of the heat exchange tube body 100 to ensure the consistency of the overall structure.
[0051] Optionally, the width of the connecting end 210 of the first heat exchange fin 200 is greater than the width of the free end 220 of the first heat exchange fin 200 .
[0052] That is to say, relative to the connection end 210 of the first heat exchange fin 200, the free end 220 of the first heat exchange fin 200 is formed as a tip. In this way, the tip formed by the free end 220 of the first heat exchange fin 200 can effectively destroy the fluid boundary layer on the outer wall surface 110, thereby enhancing the fluid turbulence. In addition, a plurality of first heat exchange fins 200 are arranged at intervals along the circumferential direction and the axial direction on the outer wall surface 110 of the heat exchange tube body 100, which can increase the additional flow path of the air, thereby enhancing the mixing of the air flowing through the first heat exchange fin 200 and the outer wall surface 110, thereby reducing the accumulation of the boundary layer of the air close to the outer wall surface 110, increasing the heat exchange area, and enhancing the heat exchange capacity.
[0053] Optionally, the free end 220 of the first heat exchange fin 200 is configured in an arc shape.
[0054] Optionally, the thickness of the connection end 210 of the first heat exchange fin 200 is greater than the thickness of the free end 220 of the first heat exchange fin 200. In other words, the thickness of the first heat exchange fin 200 gradually decreases from the connection end 210 to the free end 220. In this way, the connection stability between the first heat exchange fin 200 and the heat exchange tube body 100 can be improved, the safety of the first heat exchange fin 200 can be ensured, and the first heat exchange fin 200 can be prevented from falling off or falling off, thereby ensuring the heat exchange capacity and heat exchange efficiency of the heat exchange tube.
[0055] Optionally, the angle between the first heat exchange fin 200 and the outer wall surface 110 of the heat exchange tube body 100 is in the range of 5° to 60°.
[0056] When the angle is less than 5°, the inclination angle of the first heat exchange fin 200 is too small, and the effective heat exchange area of the first heat exchange fin 200 is small; when the angle is greater than 60°, the inclination angle of the first heat exchange fin 200 is too large, which is not conducive to the connection between the first heat exchange fin 200 and the heat exchange tube body 100, especially when the two are integrally formed, when the angle is greater than 60°, the bending angle of the first heat exchange fin 200 is too large, which is prone to breakage or breakage.
[0057] Optionally, combine as 3 to Figure 5 As shown, the heat exchange tube body 100 includes a straight section 120 and a bent section 130 connected in sequence; the heat exchange tube also includes a second heat exchange fin 300 , wherein the second heat exchange fin 300 is sleeved on the outer periphery of the straight section 120 .
[0058] Optionally, the heat exchange tube body 100 includes a straight section 120 and a bent section 130 connected in sequence, thereby forming a serpentine flow path of the heat exchange medium (ie, refrigerant) to reduce the occupied area of the heat exchange tube.
[0059] By setting the second heat exchange fin 300, the extension of the heat exchange tube can be achieved, thereby further improving the heat exchange efficiency of the heat exchange tube. Optionally, the distance between the edge end of the second heat exchange fin 300 and the outer wall 110 is greater than the distance between the free end 220 of the first heat exchange fin 200 and the outer wall 110. Among them, the second heat exchange fin 300 can be arranged at intervals with the first heat exchange fin 200, that is, one or more first heat exchange fins 200 are arranged between two second heat exchange fins 300. In this way, undulating fins are formed on the outer wall surface of the heat exchange tube body 100, so that the turbulence of the fluid can be enhanced, so as to further increase the additional flow path of the air, enhance the mixing of the air flowing through the first heat exchange fin 200 and the outer wall 110, and then reduce the boundary layer accumulation of the air close to the outer wall 110, increase the heat exchange area, and enhance the heat exchange capacity.
[0060] Optionally, a plurality of second heat exchange fins 300 are arranged at intervals.
[0061] Optionally, the straight section 120 includes a first sub-heat exchange section 121 and a second sub-heat exchange section 122, and the first sub-heat exchange section 121 is located above the second sub-heat exchange section 122; the second heat exchange fin 300 includes a first sub-fin 310 and a second sub-fin 320, wherein the first sub-fin 310 is sleeved on the first sub-heat exchange section 121; the second sub-fin 320 is sleeved on the second sub-heat exchange section 122; the spacing between adjacent first sub-fins 310 is smaller than the spacing between adjacent second sub-fins 320.
[0062] That is to say, a plurality of parallel straight sections 120 are arranged vertically, and the plurality of parallel straight sections 120 include a first sub-heat exchange section 121 and a second sub-heat exchange section 122, wherein the first sub-heat exchange section 121 is located above the second sub-heat exchange section 122, and the spacing between adjacent first sub-fins 310 sleeved on the first sub-heat exchange section 121 is smaller than the spacing between adjacent second sub-fins 320 sleeved on the second sub-heat exchange section 122. In this way, the second heat exchange fins 300 arranged on the lower straight section 120 are relatively sparse, and when the heat exchange tube is used for the evaporator of the refrigerator, the amount of frost on the second sub-heat exchange section 122 can be reduced, and the defrosting operation is also facilitated. At this time, the arrangement of the first heat exchange fins 200 can make up for the reduction in heat exchange caused by the sparse number of the second sub-fins 320.
[0063] Optionally, the heat exchange tube further includes a low temperature resistant anti-corrosion coating. The low temperature resistant anti-corrosion coating is applied to the surface of the heat exchange tube body 100 and / or the first heat exchange fin 200. In this way, the corrosion resistance of the heat exchange tube body 100 and / or the first heat exchange fin 200 in a low temperature environment can be reduced, thereby reducing the possibility of the heat exchange tube body 100 and / or the first heat exchange fin 200 being corroded by defrosting water, thereby extending the service life of the heat exchange tube body 100 and / or the first heat exchange fin 200.
[0064] An embodiment of the present disclosure provides an evaporator, comprising the heat exchange tube as described above.
[0065] Optionally, the heat exchange tube body 100 is bent to form an evaporator with a serpentine heat exchange tube, one end of the heat exchange tube is the inlet end of the heat exchange medium, and the other end is the outlet end of the heat exchange medium. The heat exchange tube body 100 is a round tube heat exchange tube.
[0066] A plurality of groups of first heat exchange fins are arranged on the outer wall surface of the heat exchange tube body 100. The plurality of groups of heat exchange fins are arranged at intervals along the circumference of the heat exchange tube body 100, and each group of heat exchange fins includes a plurality of first heat exchange fins 200 arranged at intervals along the same axis.
[0067] The connection end 210 of the first heat exchange fin 200 is fixedly connected to the outer wall surface 110, and the free end 220 of the first heat exchange fin 200 extends in a direction away from the outer wall surface 110, so that an angle is formed between the first heat exchange fin 200 and the outer wall surface 110 of the heat exchange tube body 100. In other words, the first heat exchange fin 200 is formed on the outer wall surface 110, connected to the heat exchange tube body 100 through the connection end 210, and the free end 220 extends in a direction away from the outer wall surface 110, which can form a disturbance to the air, and the fluctuation of the air fluid at the outer wall surface 110, thereby thinning the flow boundary layer, destroying the temperature boundary layer, and strengthening the heat exchange outside the tube, thereby improving the heat exchange efficiency between the refrigerant in the heat exchange tube and the air outside the heat exchange tube.
[0068] The evaporator provided by the embodiment of the present disclosure includes the heat exchange tube as mentioned above. By arranging first heat exchange fins arranged at intervals along the circumferential direction and axial direction on the outer wall surface of the heat exchange tube body, the connection area between the first heat exchange fin and the heat exchange tube body can be reduced, thereby improving the connection strength between the first heat exchange fin and the heat exchange tube body, and improving the heat conductivity between the first heat exchange fin and the heat exchange tube body; further, the connection end of the first heat exchange fin is fixedly connected to the outer wall surface, and the free end extends in a direction away from the outer wall surface to form an angle between the first heat exchange fin and the outer wall surface. In this way, when the airflow flows through the heat exchange tube body, the first heat exchange fin can disturb the airflow and increase the fluctuation of the fluid at the outer wall surface, thereby thinning the flow boundary layer, destroying the temperature boundary layer, and strengthening the heat exchange outside the tube, thereby improving the heat exchange efficiency between the refrigerant in the heat exchange tube and the airflow outside the heat exchange tube.
[0069] An embodiment of the present disclosure provides a refrigerator, comprising the evaporator as described above.
[0070] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims
1. A heat exchange tube, It is characterized in that include: The heat exchange tube body has an outer wall surface; A plurality of groups of first heat exchange fins are arranged on the outer wall surface, and the plurality of groups of heat exchange fins are arranged at intervals along the circumferential direction. Each group of heat exchange fins includes a plurality of first heat exchange fins arranged at intervals along the same axis. The first heat exchange fins include a connecting end and a free end. The connecting end is fixedly connected to the outer wall surface, and the free end extends in a direction away from the outer wall surface so that an angle is formed between the first heat exchange fin and the outer wall surface.
2. The heat exchange tube according to claim 1, It is characterized in that The heat exchange tube body and the first heat exchange fin are integrally formed.
3. The heat exchange tube according to claim 1, It is characterized in that The width of the connecting end is greater than the width of the free end.
4. The heat exchange tube according to claim 1, It is characterized in that The angle ranges from 5° to 60°.
5. The heat exchange tube according to claim 1, It is characterized in that The heat exchange tube body comprises a straight section and a bent section connected in sequence; The heat exchange tube also includes: The second heat exchange fin is sleeved on the outer periphery of the straight section.
6. The heat exchange tube according to claim 5, It is characterized in that A plurality of second heat exchange fins are arranged at intervals.
7. The heat exchange tube according to claim 5, It is characterized in that The straight section includes a first sub-heat exchange section and a second sub-heat exchange section, wherein the first sub-heat exchange section is located above the second sub-heat exchange section; The second heat exchange fin comprises: A first sub-fin, sleeved on the first sub-heat exchange section; A second sub-fin is sleeved on the second sub-heat exchange section; The interval between adjacent first sub-fins is smaller than the interval between adjacent second sub-fins.
8. The heat exchange tube according to any one of claims 1 to 7, It is characterized in that Also includes: The low-temperature resistant and anti-corrosion coating is coated on the surface of the heat exchange tube body and / or the first heat exchange fin.
9. An evaporator, It is characterized in that The heat exchange tube comprises the heat exchange tube as claimed in any one of claims 1 to 8.
10. A refrigerator, It is characterized in that Comprising the evaporator as claimed in claim 9.