Refrigerator

Abstract

The embodiment of the utility model belongs to the refrigeration technology, and provides a refrigerator which comprises a refrigerator body, a condensation pipe and a plurality of fins, the condensation pipe is arranged in the refrigerator body and comprises a first pipe part and a second pipe part which are connected, the first pipe part and the second pipe part are arranged at an included angle, the first pipe part is a threaded pipe, and the outer wall of the second pipe part is a smooth surface. The multiple fins are arranged on the first pipe part and the second pipe part at intervals in a sleeving mode in the length direction of the condensation pipe. The first pipe part in the condensation pipe adopts the threaded pipe, so that the surface area of the first pipe part is relatively larger, the heat exchange efficiency of the first pipe part and air is higher, the first pipe part is the threaded pipe, the outer wall of the first pipe part is an uneven surface, and air flows through the outer wall of the first pipe part to generate secondary circulation to form turbulent flow; therefore, contact heat exchange between the air and the outer wall of the condensation pipe is more sufficient, and the refrigerator has good heat exchange performance under the condition that the size is compact.

Description

Technical Field

[0001] The embodiments of the present application relate to refrigeration technology, and more particularly to a refrigerator. Background Art

[0002] The spiral condenser is a component of the refrigerator and a type of heat exchanger. It can convert gas or vapor into liquid and transfer the heat in the tube to the air near the tube in a very fast manner.

[0003] In the current spiral condenser, the condenser tube adopts a flat tube structure. The condensation effect per unit tube section of such a condenser is poor. In order to make the spiral condenser have good condensation performance, the length of the condenser tube needs to be lengthened, which makes the spiral condenser larger in size and higher in cost. Utility Model Content

[0004] The embodiment of the present application provides a refrigerator, which can solve the problem of large size and high cost of the condenser of the refrigerator in the related art.

[0005] In a first aspect, an embodiment of the present application provides a refrigerator, comprising:

[0006] Box;

[0007] A condenser tube is arranged in the box body, the condenser tube comprises a first tube portion and a second tube portion connected to each other, the first tube portion and the second tube portion are arranged at an angle, the first tube portion is a threaded tube, and the outer wall of the second tube portion is a smooth surface;

[0008] A plurality of fins are sleeved on the first tube portion and the second tube portion at intervals along the length direction of the condenser tube.

[0009] The present application proposes a refrigerator in which a box body can be installed with a condenser and a fin, and the condenser can be used for gas to pass through, and the heat of the gas can be dissipated to the air outside the condenser through the tube wall of the condenser. A plurality of fins are sleeved on the condenser, and the heat of the gas can also be dissipated to the air outside the condenser through the fins, so that the gas heat dissipation efficiency is higher. The first tube portion in the condenser adopts a threaded tube, so that part of the tube portion of the condenser is a threaded tube, so that the surface area of ​​the first tube portion is relatively larger, so that the efficiency of heat exchange between the first tube portion and the air is higher. The first tube portion is a threaded tube, which also makes the outer wall of the first tube portion a non-flat surface, and the air flowing through the outer wall of the first tube portion can generate secondary circulation and form turbulence, so that the air and the outer wall of the condenser tube are in contact and heat exchange more fully, so that the refrigerator of the present application has good heat exchange performance in a compact volume. The surface of the second tube portion is a smooth surface, which can make the structure of the second tube portion relatively simpler, so that the preparation process of the second tube portion is relatively simple, and the preparation cost is relatively low, so that the condenser of the present application has a relatively low preparation cost while having better condensation performance. The first tube portion and the second tube portion are arranged at an angle, so that the first tube portion and the second tube portion will not extend in the same direction, thereby making the structure of the condenser tube of the present application relatively more compact, thereby making the space available for installing other components in the refrigerator of the present application larger, and the structure of the refrigerator can also be more compact.

[0010] In some embodiments of the present application, the condenser tube further includes a third tube portion, two ends of the third tube portion are respectively connected to the first tube portion and the second tube portion, and an outer wall of the third tube portion is a curved surface.

[0011] The outer wall of the third tube portion is a curved surface, which can make the transition between the first tube portion and the second tube portion smoother, so as to facilitate the connection between the first tube portion and the second tube portion.

[0012] In some embodiments of the present application, an axis of part of the third tube portion is in the same direction as an axis of the first tube portion, and an outer wall of the third tube portion is a smooth surface.

[0013] The outer wall of a portion of the third tube portion is a smooth surface, so that the structure of the third tube portion is similar to that of the second tube portion, thereby facilitating a more natural transition at the connection between the first tube portion and the second tube portion.

[0014] In some embodiments of the present application, the first tube portion, the second tube portion and the third tube portion are steel tubes.

[0015] The use of steel pipes for the first pipe portion, the second pipe portion and the third pipe portion can reduce the manufacturing costs of the first pipe portion, the second pipe portion and the third pipe portion.

[0016] In some embodiments, the second tube portion and the third tube portion are an integral structure.

[0017] The difficulty of the preparation process of the second pipe portion and the third pipe portion can be reduced by preparing a long straight steel pipe and forming the connected second pipe portion and the third pipe portion through a bending process.

[0018] In some embodiments of the present application, the fins are sleeved on the first tube portion and the second tube portion by welding.

[0019] The fins are fixed to the first tube portion and the second tube portion by welding, so that the connection between the fins and the first tube portion and the second tube portion is more reliable.

[0020] In some embodiments of the present application, the surface of the first tube portion has limiting grooves spirally distributed along the length direction of the first tube portion, and the fins are embedded in the limiting grooves.

[0021] By arranging the fin in the limiting groove, the connection between the fin and the first tube portion can be made more reliable, and the contact area between the fin and the first tube portion can be increased.

[0022] In some embodiments of the present application, there are multiple first tube parts and multiple second tube parts, and the multiple first tube parts and the multiple second tube parts are alternately connected in sequence.

[0023] By setting the number of the first tube portion and the second tube portion to be multiple, the length of the condenser tube can be increased, so that the condenser tube has better condensation performance.

[0024] In some embodiments of the present application, the first tube portion is parallel to the bottom wall of the box body, and the second tube portion is arranged at an angle to the bottom wall of the box body.

[0025] In a second aspect, an embodiment of the present application provides a refrigerator, comprising a body, a condenser and a plurality of fins, wherein the body is used for installing the condenser, the condenser is arranged in the body, the condenser is used for allowing the passage of the material to be condensed, a plurality of fins are sleeved on the condenser, and the fins are in contact with the condenser to dissipate the heat of the material to be condensed. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the implementation methods in the embodiments of the present application or the related technologies, the following is a brief introduction to the drawings required for use in the embodiments or the related technology descriptions. Obviously, the drawings described below are some embodiments of the present application, and a person skilled in the art can also obtain other drawings based on these drawings.

[0027] Figure 1 A schematic diagram of a condenser tube and fins of a refrigerator according to an embodiment of the present application;

[0028] Figure 2 A schematic diagram of a condenser tube of a refrigerator according to an embodiment of the present application;

[0029] Figure 3 for Figure 2 A schematic diagram showing the enlarged display of the middle A area;

[0030] Figure 4 This is a schematic diagram of another implementation of the refrigerator of the embodiment of the present application.

[0031] Reference numerals:

[0032] 100-condenser pipe, 110-first pipe section, 111-limiting groove, 120-second pipe section, 130-third pipe section, 140-bend section,

[0033] 200-Fins. DETAILED DESCRIPTION

[0034] In order to make the purpose, implementation mode and advantages of the present application clearer, the exemplary implementation mode of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0035] It should be noted that the brief description of terms in this application is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their common and usual meanings.

[0036] In addition, the terms "include" and "have" and any variations thereof are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to those components expressly listed but may include other components not expressly listed or inherent to such products or devices.

[0037] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0038] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0039] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0041] The spiral condenser is a component of the refrigeration system and a type of heat exchanger. It can convert gas or vapor into liquid and transfer the heat in the tube to the air near the tube in a very fast manner.

[0042] In the current spiral condenser, the condenser tube adopts a flat tube structure. The condensation effect per unit tube section of such a condenser is poor. In order to make the spiral condenser have good condensation performance, the length of the condenser tube needs to be lengthened, which makes the spiral condenser larger in size and higher in cost.

[0043] In the refrigerator proposed in the present application, the box body can be used for installing the condenser and the fins, and the condenser can be used for passing the gas, and the heat of the gas can be dissipated to the air outside the condenser through the tube wall of the condenser. A plurality of fins are arranged on the condenser, and the heat of the gas can also be dissipated to the air outside the condenser through the fins, so that the heat dissipation efficiency of the gas is higher. The first tube portion in the condenser adopts a threaded tube, so that part of the tube portion of the condenser is a threaded tube, so that the surface area of ​​the first tube portion is relatively larger, so that the efficiency of heat exchange between the first tube portion and the air is higher. The first tube portion is a threaded tube, which also makes the outer wall of the first tube portion a non-flat surface, and the air flowing through the outer wall of the first tube portion can generate secondary circulation and form turbulence, so that the air and the outer wall of the condenser tube are more fully contacted and exchanged, so that the refrigerator of the present application has good heat exchange performance in a compact volume. The surface of the second tube portion is a smooth surface, which can make the structure of the second tube portion relatively simpler, so that the preparation process of the second tube portion is relatively simple, and the preparation cost is relatively low, so that the condenser of the present application has a relatively low preparation cost while having better condensation performance. The first tube portion and the second tube portion are arranged at an angle, so that the first tube portion and the second tube portion will not extend in the same direction, thereby making the structure of the condenser tube of the present application relatively more compact, thereby making the space available for installing other components in the refrigerator of the present application larger, and the structure of the refrigerator can also be more compact.

[0044] The refrigerator provided in the present application is described in detail below in conjunction with specific embodiments.

[0045] The present application embodiment provides a refrigerator, referring to Figure 1 and Figure 2 As shown, the refrigerator includes a box body, which is the basic component of the refrigerator of the present application. The box body can provide a mounting base for at least some of the other components of the refrigerator and protect at least some of the other components. The box body can be made of metal material, so that the box body has better structural strength, thereby making the durability and reliability of the box body better. Of course, the box body can also be made of polymer material, so that the box body has better structural strength and is relatively light, which can make the weight of the refrigerator lighter.

[0046] The refrigerator further includes a condenser 100, which is disposed in the box body. The condenser 100 may be made of metal material, and the metal condenser 100 may also have better heat transfer and thermal conductivity performance.

[0047] The condenser 100 can be connected to the compressor through other pipes in the refrigerator, and the high-temperature and high-pressure gas can enter the condenser 100, and part of the heat of the high-temperature gas can be dissipated to the outside through the inner and outer walls of the condenser 100, so that the high-temperature and high-pressure gas pressure is converted into a normal-temperature and high-pressure liquid. Therefore, the condenser 100 is made of metal material to achieve a better heat dissipation effect for the gas in the condenser 100.

[0048] The refrigerator of the present application may also be provided with a plurality of fins 200, which may be sleeved on the condenser 100, so that the inner wall of the fin 200 may contact the outer wall of the condenser 100, so that the heat of the gas in the condenser 100 may be conducted to the fin 200 and dissipated to the outside, thereby reducing the temperature of the gas. The fin 200 may increase the contact area between the condenser 100 and the outside air, so that the heat dissipation efficiency of the high-temperature gas is higher. The number of fins 200 is set to be multiple, which may further enhance the heat dissipation efficiency of the refrigerator of the present application.

[0049] Specifically, the fin 200 can be set as an annular structure so that the inner wall of the fin 200 can fully contact the outer wall of the condenser 100, thereby further increasing the contact area between the fin 200 and the condenser 100, so that the heat of the gas in the condenser 100 can be more efficiently transferred to the fin 200 and exchange heat with the air, thereby making the condensation and heat dissipation performance of the refrigerator of the present application better.

[0050] The condenser 100 includes a first tube portion 110, and a part of the fins 200 is sleeved on the first tube portion 110. The first tube portion 110 may be a threaded tube, and therefore, a convex structure extending spirally along the length direction of the first tube portion 110 is provided on the outer wall of the first tube portion 110, and a groove structure may be formed between adjacent convex structures. In this way, the surface area of ​​the outer wall of the first tube portion 110 is larger, so that the outer wall of the first tube portion 110 has a larger contact area with the external air, and the heat of the high-temperature gas passing through the first tube portion 110 can be more efficiently reduced through heat exchange between the inner wall and the outer wall of the first tube portion 110 and the external air.

[0051] The condenser 100 further includes a second tube portion 120, and part of the fins 200 are sleeved on the second tube portion 120. The second tube portion 120 is connected to the first tube portion 110, so the high-temperature gas will also flow through the second tube portion 120, and the heat of the high-temperature gas can also be dissipated through the heat exchange with the external air through the inner wall and the outer wall of the second tube portion 120, and the heat of the high-temperature gas can also be conducted to the fins 200 through the second tube portion 120. The outer wall of the second tube portion 120 is a smooth surface, so that the structure of the second tube portion 120 is relatively simple, so that the preparation cost of the second tube portion 120 is relatively lower, so that the refrigerator of the present application can have a relatively low preparation cost while having better condensation performance.

[0052] The first tube portion 110 and the second tube portion 120 are arranged at an angle, so that the first tube portion 110 and the second tube portion 120 will not extend in the same direction, so that the structure of the condenser 100 of the present application is relatively more compact, thereby making the space for installing other components besides the condenser 100 in the refrigerator of the present application larger, and the structure of the refrigerator can also be more compact.

[0053] In some embodiments, reference Figure 1 and Figure 2 As shown, the condenser 100 of the present application may also be provided with a third tube portion 130. The two ends of the third tube portion 130 are respectively connected to the first tube portion 110 and the second tube portion 120, so that the first tube portion 110 can be connected to the second tube portion 120 through the third tube portion 130. The outer wall of the third tube portion 130 may be an arc surface, so that the third tube portion 130 may be an arc-shaped curved tube structure, so that the transition at the connection between the first tube portion 110 and the second tube portion 120 is more natural, and stress concentration at the third tube portion 130 can be avoided, so that the structure of the condenser 100 of the present application is more stable and reliable.

[0054] Some of the multiple fins 200 can be arranged to be sleeved on the third tube portion 130, and some of the fins 200 can be arranged at intervals along the length direction of the third tube portion 130. In this way, when the high-temperature gas passes through the third tube portion 130, the heat can also be dissipated to the outside through the inner and outer walls of the third tube portion 130 and the fins 200 sleeved on the third tube portion 130, so as to make the condensation effect of the refrigerator of the present application better.

[0055] In some embodiments, the outer wall of the third tube portion 130 of the present application is a smooth surface, so that the surface structure of the third tube portion 130 is consistent with that of the second tube portion 120, thereby facilitating the connection between the third tube portion 130 and the second tube portion 120. The axis of part of the third tube portion 130 is in the same direction as the axis of the first tube portion 110, so that the transition at the connection between the first tube portion 110 and the second tube portion 120 is more natural. Among them, the part of the third tube portion 130 whose axis is in the same direction as the axis of the first tube portion 110 can be an integral structure with the first tube portion 110, which is more convenient for the preparation and production of the first tube portion 110 and the third tube portion 130.

[0056] In some embodiments, the first tube portion 110, the second tube portion 120, and the third tube portion 130 in the present application may be made of steel pipes, so that the first tube portion 110, the second tube portion 120, and the third tube portion 130 are metal material structures, so that the first tube portion 110, the second tube portion 120, and the third tube portion 130 have good heat conduction and heat transfer performance. Specifically, the second tube portion 120 and the third tube portion 130 are flat steel tube structures, and the first tube portion 110 is a threaded steel tube, so that the preparation cost of the first tube portion 110, the second tube portion 120, and the third tube portion 130 can be relatively lower, thereby reducing the preparation and production cost of the refrigerator of the present application.

[0057] In some embodiments, the second tube portion 120 and the third tube portion 130 may be formed in an integral structure, so that the manufacturing process of the condenser tube 100 is relatively simple. Specifically, a long straight steel tube may be prepared and the connected second tube portion 120 and third tube portion 130 may be formed by a bending process.

[0058] In some embodiments, in the present application, a plurality of fins 200 can be sleeved on the first tube portion 110, the second tube portion 120 and the third tube portion 130 by welding. The fins 200 are fixed to the condenser 100 by welding, so that the connection effect between the fins 200 and the first tube portion 110, the second tube portion 120 and the third tube portion 130 can be more reliable, so that the structure of the refrigerator of the present application can be more stable and reliable. In addition, the welding parts between the fins 200 and the first tube portion 110, the second tube portion 120 and the third tube portion 130 are also metal parts, so that the efficiency of heat conduction to the fins 200 through the first tube portion 110, the second tube portion 120 and the third tube portion 130 can be higher, so that the heat of the high-temperature gas in the first tube portion 110, the second tube portion 120 and the third tube portion 130 can be more efficiently dissipated to the outside.

[0059] In addition, in other embodiments, the fin 200 can also be fixedly mounted on the first tube portion 110, the second tube portion 120 and the third tube portion 130 by interference fit, so that the inner wall of the fin 200 can fit tightly with the first tube portion 110, the second tube portion 120 and the third tube portion 130, so that the heat of the high-temperature gas passing through the first tube portion 110, the second tube portion 120 and the third tube portion 130 can also be efficiently conducted to the fin 200 and dissipated to the outside.

[0060] Specifically, each portion of the inner wall of the fin 200 in the circumferential direction of the fin 200 is fully in contact with the outer wall of the first tube portion 110, the outer wall of the second tube portion 120 and the outer wall of the third tube portion 130, so that the heat of the high-temperature gas can be more efficiently transferred to the fin 200 through the first tube portion 110, the second tube portion 120 and the third tube portion 130.

[0061] In some embodiments, reference Figure 2 and Figure 3 As shown, since the first tube portion 110 in the present application is a threaded tube, the surface of the first tube portion 110 has limiting grooves 111 spirally distributed along the length direction of the first tube portion 110. The inner wall of the limiting groove 111 can also constitute the outer wall of the first tube portion 110, so that the outer surface area of ​​the first tube portion 110 is larger than the outer surface area of ​​the tube body with a flat surface. Part of the fin 200 can be embedded in the limiting groove 111 in each part of the length direction of the first tube portion 110, and the inner wall of the limiting groove 111 can serve the purpose of limiting the fin 200, so that the fin 200 can be more reliably fixed on the first tube portion 110. In addition, when the fin 200 is embedded in the limiting groove 111 of the first tube portion 110, the outer wall portions of the fin 200 on opposite sides can fit with the inner wall opposite to the limiting groove 111, thereby increasing the contact area between the fin 200 and the first tube portion 110, so that the heat of the high-temperature gas passing through the first tube portion 110 can be more efficiently transferred to the fin 200 through the first tube portion 110.

[0062] The portion of the limiting groove 111 of the first tube portion 110 may not be provided with the fin 200, and the external air may contact the inner wall of the limiting groove 111 when blowing toward the first tube portion 110, thereby increasing the contact area between the first tube portion 110 and the external air.

[0063] In addition, by embedding the fin 200 in the limiting groove 111 of the first tube portion 110, part of the fin 200 can be located in the limiting groove 111, which can reduce the size of the part of the fin 200 protruding from the surface of the first tube portion 110, thereby making the structure of the refrigerator of the present application more compact.

[0064] In some embodiments, the number of the first tube portion 110 and the second tube portion 120 in the present application can be set to multiple, and multiple first tube portions 110 and multiple second tube portions 120 can be connected alternately in sequence. Correspondingly, the number of the third tube portion 130 is also set to multiple, so that adjacent first tube portions 110 and second tube portions 120 are connected through the third tube portion 130. The condenser tube 100 formed by the first tube portion 110, the second tube portion 120 and the third tube portion 130 can be spirally distributed, so that the condenser tube 100 has a relatively compact structure when it has a longer length.

[0065] The present application also proposes a refrigerator, referring to Figure 4 As shown, the refrigerator includes a cabinet, a condenser 100 and a plurality of fins 200, the plurality of fins 200 are sleeved on the condenser 100, the condenser 100 has a curved section 140, the portion of the condenser 100 at one end of the curved section 140 is a threaded tube, and the outer wall of the portion of the condenser 100 at the other end of the curved section 140 is a flat surface.

[0066] The plurality of fins 200 are sleeved on the condenser tube 100 so that the fins 200 are fixed on the condenser tube 100, and the plurality of fins 200 are spaced apart along the length direction of the condenser tube 100. High temperature gas can be introduced from one end of the condenser tube 100 and discharged from the other end of the condenser tube 100, and the heat of the high temperature gas can be dissipated to the outside air through the inner and outer walls of the condenser tube 100 and the fins 200, so that the temperature of the high temperature gas can be reduced to condense into liquid.

[0067] The condenser 100 includes a curved tube section 140, a part of the tube section in the condenser 100 is connected to one end of the curved tube section 140, and another part of the tube section in the condenser 100 is connected to the other end of the curved tube section 140. The tube sections of the condenser 100 located at both ends of the curved tube section 140 can be a threaded tube and a tube section with a smooth outer wall, respectively. The threaded tube portion of the condenser 100 can increase the surface area of ​​the condenser 100, so that the area of ​​the condenser 100 in contact with the external air is relatively larger. The smooth outer wall portion of the condenser 100 can also serve the purpose of heat exchange between hot gas and external air, and the preparation cost is relatively low, so that the condenser 100 of the present application can have a relatively low preparation cost while having good condensation performance.

[0068] In some embodiments, the first tube portion 110 may be arranged parallel to the bottom wall of the box. Accordingly, the second tube portion 120 may be arranged at an angle to the bottom wall of the box. Specifically, the second tube portion 120 may be arranged perpendicular to the bottom wall of the box. In this way, the condensing tube 100 may be arranged in a regular and orderly manner in the box, so that the space utilization rate in the box is higher.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0070] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A refrigerator, characterized in that: The refrigerator comprises: Box; A condenser (100) is arranged in the box, the condenser (100) comprises a first tube portion (110) and a second tube portion (120) connected to each other, the first tube portion (110) and the second tube portion (120) are arranged at an angle, the first tube portion (110) is a threaded tube, and the outer wall of the second tube portion (120) is a smooth surface; A plurality of fins (200) are spaced apart and sleeved on the first tube portion (110) and the second tube portion (120) along the length direction of the condenser tube (100).

2. The refrigerator according to claim 1, characterized in that: The condenser tube (100) further includes a third tube portion (130), two ends of which are respectively connected to the first tube portion (110) and the second tube portion (120), and an outer wall of the third tube portion (130) is a curved surface.

3. The refrigerator according to claim 2, characterized in that: The axis of a portion of the third tube portion (130) is in the same direction as the axis of the first tube portion (110), and the outer wall of the third tube portion (130) is a smooth surface.

4. The refrigerator according to claim 3, characterized in that: The first pipe portion (110), the second pipe portion (120) and the third pipe portion (130) are all steel pipes.

5. The refrigerator according to claim 2, characterized in that: The second tube portion (120) and the third tube portion (130) are an integral structure.

6. The refrigerator according to claim 1, characterized in that: The fin (200) is sleeved on the first tube portion (110) and the second tube portion (120) by welding.

7. The refrigerator according to claim 6, characterized in that: The surface of the first tube portion (110) has limiting grooves (111) which are spirally distributed along the length direction of the first tube portion (110), and the fins (200) are embedded in the limiting grooves (111).

8. The refrigerator according to any one of claims 1 to 7, characterized in that: The number of the first tube parts (110) and the second tube parts (120) is plural, and the plural first tube parts (110) and the plural second tube parts (120) are alternately connected in sequence.

9. The refrigerator according to claim 1, characterized in that: The first tube portion (110) is parallel to the bottom wall of the box body, and the second tube portion (120) is arranged at an angle to the bottom wall of the box body.

10. A refrigerator, characterized in that: The invention comprises a box body, a condenser tube (100) and a plurality of fins (200), wherein the box body is used for installing the condenser tube (100), the condenser tube (100) is arranged in the box body, the condenser tube (100) is used for allowing the passage of the object to be condensed, the plurality of fins (200) are sleeved on the condenser tube (100), and the fins (200) are in contact with the condenser tube (100) so as to dissipate the heat of the object to be condensed; The condenser tube (100) comprises a first tube portion (110) and a second tube portion (120) which are connected to each other. The first tube portion (110) is a threaded tube to increase the surface area of ​​the first tube portion (110). The first tube portion (110) and the second tube portion (120) are arranged at an angle.

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