Evaporator and refrigerator

Abstract

The application provides an evaporator and a refrigerator. The evaporator comprises fins, and heat exchange tube units arranged on the fins, wherein each heat exchange tube unit comprises a first tube segment, a second tube segment and a third tube segment, two ends of the second tube segment are connected to the first tube segment and the third tube segment respectively, the first tube segment and the third tube segment extend towards the same side of the second tube segment, and the first tube segment and the third tube segment are arranged at intervals along a first direction; a distance between one end of the first tube segment connected to the second tube segment and one end of the third tube segment connected to the second tube segment along the first direction is different from a distance between the other end of the first tube segment and the other end of the third tube segment along the first direction; and the first direction is perpendicular to the direction of air flow. In this way, the heat exchange medium leakage and other problems caused by multi-tube welding can be improved, the heat exchange efficiency can be improved, and the cost can be saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of heat exchange devices, in particular to an evaporator and a refrigerator. BACKGROUND

[0002] In the related art, in order to improve the heat exchange effect of the evaporator, a plurality of heat exchange pipes are arranged in a staggered manner. Such an evaporator is obtained by inserting a plurality of heat exchange pipes into fins and then welding the bent pipes to pass through the plurality of heat exchange pipes.

[0003] However, when the heat exchange pipes are welded, the welding is prone to be unqualified, thereby causing quality problems such as leakage of the heat exchange medium. At the same time, because the evaporator manufactured by such a process has a large number of welding positions, the welding needs to be performed sequentially, which results in a high manufacturing cost of the evaporator. SUMMARY

[0004] The present application provides an evaporator and a refrigerator, which can improve the problems such as leakage of the heat exchange medium caused by the welding of the plurality of pipes, improve the heat exchange efficiency, and save costs.

[0005] To solve the above technical problems, one technical solution adopted by the present application is to provide an evaporator. The evaporator comprises: fins; and a heat exchange pipe unit arranged on the fins, comprising a first pipe segment, a second pipe segment, and a third pipe segment, two ends of the second pipe segment being connected to the first pipe segment and the third pipe segment respectively, the first pipe segment and the third pipe segment extending toward the same side of the second pipe segment, and the first pipe segment and the third pipe segment being arranged in a spaced manner along a first direction; wherein the distance between one end of the first pipe segment connected to the second pipe segment and one end of the third pipe segment connected to the second pipe segment along the first direction is different from the distance between the other end of the first pipe segment and the other end of the third pipe segment along the first direction; and wherein the first direction is perpendicular to the airflow direction.

[0006] The fins are provided with an opening, the projection of the second pipe segment on the fins along a second direction covers the opening, and / or the projection of the first pipe segment on the fins along the second direction and the projection of the third pipe segment on the fins along the second direction are located on two sides of the opening respectively; wherein the second direction is perpendicular to the first direction and the airflow direction.

[0007] The fins further comprise: a heat dissipation portion connected to the end portion of the opening and arranged at an angle with the radial direction of the opening.

[0008] The heat dissipation portion extends along a first plane, and the first plane is a vertical plane of the airflow direction or a plane arranged at an angle with the vertical plane.

[0009] The first pipe segment and the third pipe segment are arranged at least partially staggered along the airflow direction.

[0010] The fins include: a first fin; a second fin group including two second fins, disposed on the same side of the first fin, and arranged along the airflow direction and spaced apart from the first fin; a second pipe segment is disposed on the first fin, and one end of the first pipe segment and one end of the third pipe segment are disposed on the second fin close to the first fin, and the other end of the first pipe segment and the other end of the third pipe segment are disposed on the other second fin; the second fin is provided with two second pipe holes, and the two ends of the first pipe segment are respectively arranged in one second pipe hole of the two second fins, and the two ends of the third pipe segment are respectively arranged in the other second pipe hole of the two second fins; the first distance between the two second pipe holes on the second fin close to the first fin along the first direction is not equal to the second distance between the two second pipe holes on the other second fin along the first direction.

[0011] The first distance is less than the second distance.

[0012] The first fin is provided with two first pipe holes, and the two ends of the second pipe segment are respectively arranged in the two first pipe holes of the first fin, and the third distance between the two first pipe holes is greater than the first distance.

[0013] The two first pipe holes are arranged staggered along the airflow direction, and the two second pipe holes of the second fin are arranged staggered along the airflow direction.

[0014] The opening includes a first opening and / or a second opening, and the first opening is arranged between the two first pipe holes; and / or the second opening is arranged between the two second pipe holes.

[0015] The fins include a plurality of second fin groups arranged along the airflow direction, the first pipe segment includes a plurality of first sub-pipe segments, the third pipe segment includes a plurality of second sub-pipe segments, and the plurality of second fin groups, the plurality of first sub-pipe segments and the plurality of second sub-pipe segments are one-to-one corresponding.

[0016] The fins include a plurality of first fins arranged along the second direction and a plurality of second fin groups arranged along the second direction; the second direction is perpendicular to the first direction and the airflow direction.

[0017] To solve the above technical problems, one technical scheme adopted by the present application is to provide a refrigerator. The refrigerator includes the above-mentioned evaporator.

[0018] The application has the advantages that the evaporator is used for heat exchange of air, wherein the evaporator comprises fins and heat exchange pipe units arranged on the fins, the heat exchange pipe units are integrally formed single pipes, welding process is not required between pipe sections, heat exchange medium leakage and other problems caused by multi-pipe welding can be improved, heat exchange efficiency can be improved, and cost can be saved; further, the first pipe section and the third pipe section are arranged along the first direction, air has a larger flow space when flowing through the evaporator, the contact area of the pipe section and the airflow can be increased, and the heat exchange efficiency can be improved; further, the distance between the one end of the first pipe section connected to the second pipe section and the one end of the third pipe section connected to the second pipe section along the first direction is different from the distance between the other end of the first pipe section and the other end of the third pipe section along the first direction, the one end of the first pipe section connected to the second pipe section and the other end of the first pipe section are staggered along the vertical direction of the airflow direction, the blocking area of the one end of the first pipe section connected to the second pipe section and the other end of the first pipe section along the airflow direction is further reduced, the one end of the third pipe section connected to the second pipe section and the other end of the third pipe section are staggered along the vertical direction of the airflow direction, and the blocking area of the one end of the third pipe section connected to the second pipe section and the other end of the third pipe section along the airflow direction is reduced, therefore, the heat exchange area of the first pipe section and the third pipe section to the airflow can be increased, and the heat exchange efficiency can be improved; therefore, the application can improve heat exchange medium leakage and other problems caused by multi-pipe welding, improve heat exchange efficiency, and save cost. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0020] Figure 1 is a structural schematic view of an embodiment of the evaporator of the application;

[0021] Figure 2 is a structural schematic view of an embodiment of the evaporator of the application;

[0022] Figure 3 is a structural schematic view of another embodiment of the first fin of the application;

[0023] Figure 4 is a structural schematic view of another embodiment of the second fin of the application;

[0024] Figure 5 is a structural schematic view of an embodiment of the evaporator of the application;

[0025] Figure 6is a structural state schematic diagram in a preparation process of an embodiment of an evaporator of the present application. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0027] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0028] In addition, if the embodiments of the present application involve descriptions such as “first”, “second”, etc., the descriptions of “first”, “second”, etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by “first”, “second” can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person of ordinary skill in the art can realize it, and when the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection claimed by the present application.

[0029] The present application first proposes an evaporator, as shown in Figure 1 , and Figure 1 is a structural schematic diagram of an embodiment of an evaporator of the present application. The evaporator of the embodiment includes fins 11 and heat exchange tube units 12 arranged in the fins 11, and the heat exchange tube units 12 include first tube segments 121, second tube segments 122 and third tube segments 123. The two ends of the second tube segments 122 are respectively connected to the first tube segments 121 and the third tube segments 123, the first tube segments 121 and the third tube segments 123 extend towards the same side of the second tube segments 122, and the first tube segments 121 and the third tube segments 123 are arranged at intervals along a first direction x. The distance between one end of the second tube segment 122 connected to the first tube segment 121 and one end of the second tube segment 122 connected to the third tube segment 123 along the first direction x is not equal to the distance between the other end of the first tube segment 121 and the other end of the third tube segment 123 along the first direction x. The first direction x is perpendicular to an airflow direction y.

[0030] In an application scenario, as shown in Figure 6As shown, the heat exchange pipe unit 12 can be made in parallel arrangement and serpentine disc shape, and the pipe segments do not need to use welding process. The second pipe segment 122 is twisted to deform the evaporator, and thus the other parts of the evaporator also deform correspondingly, so that the first pipe segment 121 and the third pipe segment 123 are staggered along the first direction x to form staggered arrangement. Further, the first pipe segment 121 and the third pipe segment 123 in each group of second fin groups are adjusted in position. The adjustment method is to press one end of the first pipe segment 121 close to the second pipe segment 122 and one end of the third pipe segment 123 close to the second pipe segment 122, so that the distance between them is reduced, and the one end of the first pipe segment 121 connected to the second pipe segment 122 and the other end of the first pipe segment 121 are staggered along the airflow direction y, and the one end of the third pipe segment 123 connected to the second pipe segment 122 and the other end of the third pipe segment 123 are staggered along the airflow direction y, so as to further form staggered arrangement.

[0031] Since the heat exchange pipe unit 12 is a single pipe integrally formed, the pipe segments do not need to use welding process, which can improve the problem of heat exchange medium leakage caused by multi-pipe welding, improve heat exchange efficiency, and save cost.

[0032] The airflow can flow from the first pipe segment 121 and the third pipe segment 123 to the second pipe segment 122 along the airflow direction y, or flow in the opposite direction.

[0033] Further, the first pipe segment 121 and the third pipe segment 123 are arranged at intervals along the first direction x, which can provide more flow space for air flowing through the evaporator, increase the contact area between the pipe segments and the airflow, and improve the heat exchange efficiency.

[0034] Further, the distance between the one end of the first pipe segment 121 connected to the second pipe segment 122 and the one end of the third pipe segment 123 connected to the second pipe segment 122 along the first direction x is not equal to the distance between the other end of the first pipe segment 121 and the other end of the third pipe segment 123 along the first direction x, so that the one end of the first pipe segment 121 connected to the second pipe segment 122 and the other end of the first pipe segment 121 are staggered along the first direction x, and the blocking area of the one end of the first pipe segment 121 connected to the second pipe segment 122 and the other end of the first pipe segment 121 along the airflow direction y is further reduced, which can increase the heat exchange area of the first pipe segment 121 to the airflow and improve the heat exchange efficiency.

[0035] Further, the distance between the one end of the second pipe section 122 connected by the first pipe section 121 and the one end of the second pipe section 122 connected by the third pipe section 123 along the first direction x and the distance between the other end of the first pipe section 121 and the other end of the third pipe section 123 along the first direction x are not equal, so that the one end of the second pipe section 122 connected by the third pipe section 123 and the other end of the third pipe section 123 are staggered along the first direction x, and the blocking area of the one end of the second pipe section 122 connected by the third pipe section 123 and the other end of the third pipe section 123 along the airflow direction y is further reduced, so that the heat exchange area of the third pipe section 123 to the airflow is increased, and the heat exchange efficiency is improved.

[0036] Optionally, the first pipe section 121 and the third pipe section 123 of the embodiment are at least partially staggered along the airflow direction x.

[0037] Because the first pipe section 121 and the third pipe section 123 are partially staggered along the airflow direction x, the heat exchange area of the airflow flowing through the internal gap of the fin and the first pipe section 121 and the third pipe section 123 is increased, and the heat exchange effect is improved.

[0038] Optionally, the fin 11 of the embodiment includes: a first fin 111; a second fin group including two second fins 112, arranged on the same side of the first fin 111 and spaced apart from the first fin 111 along the airflow direction; and the second pipe section 122 is arranged on the first fin 111, and the one end of the second pipe section 122 connected by the first pipe section 121 and the one end of the second pipe section 122 connected by the third pipe section 123 are arranged on the second fin 112 arranged close to the first fin 111, and the other end of the first pipe section 121 and the other end of the third pipe section 123 are arranged on the other second fin 112.

[0039] Because the second fin 112 and the first fin 111 are spaced apart along the airflow direction y, a gap extending along the airflow direction y is formed between them, so that the airflow has a larger flow space when flowing through the evaporator, the flow rate is increased, and the heat exchange efficiency is improved.

[0040] Further, the above-mentioned pipe sections are arranged in the fin, which can increase the total area of the evaporator heat exchange component while ensuring stability, and can improve the heat exchange efficiency.

[0041] In other embodiments, the fin structure can also be arranged at the bent pipe position of the heat exchange pipe monomer, i.e., the pipe body reversing position, and the shape of the fin is not limited.

[0042] In other embodiments, the fin can be a fin group formed by a plurality of fins arranged along the second direction, or can be realized by engraving grooves on an integrally formed fin structure.

[0043] Optionally, the second fin 112 of the embodiment is provided with two second tube holes, two ends of the first tube segment 121 are respectively arranged in one second tube hole of the two second fins 112, and two ends of the third tube segment 123 are respectively arranged in another second tube hole of the two second fins 112; a first distance between the two second tube holes on the second fin 112 close to the first fin 111 along the first direction x is not equal to a second distance between the two second tube holes on the other second fin 112 along the first direction x.

[0044] Because the tube segment is arranged on the corresponding fin through the tube hole on the fin in the embodiment, the position of the tube segment can be better fixed, and the stability of the evaporator can be improved.

[0045] Optionally, the first distance of the embodiment is less than the second distance.

[0046] By the above-mentioned manner, the first distance of the tube hole is set to be less than the second distance, so that the one end of the first tube segment 121 connected with the second tube segment 122 and the other end of the first tube segment 121 are staggered along the first direction x, further reducing the blocking area of the one end of the first tube segment 121 connected with the second tube segment 122 and the other end of the first tube segment 121 along the airflow direction y, increasing the heat exchange area of the first tube segment 121 to the airflow, and improving the heat exchange efficiency; meanwhile, the one end of the third tube segment 123 connected with the second tube segment 122 and the other end of the third tube segment 123 are staggered along the first direction x, further reducing the blocking area of the one end of the third tube segment 123 connected with the second tube segment 122 and the other end of the third tube segment 123 along the airflow direction y, increasing the heat exchange area of the third tube segment 123 to the airflow, and improving the heat exchange efficiency.

[0047] Optionally, the first fin 111 of the embodiment is provided with two first tube holes, two ends of the second tube segment 122 are respectively arranged in the two first tube holes of the first fin 111, and a third distance between the two first tube holes is greater than the first distance.

[0048] Because the two ends of the second tube segment 122 are respectively arranged in the two first tube holes of the first fin 111, the position of the tube segment can be better fixed, and the stability of the evaporator can be improved.

[0049] Further, the third distance between the two first tube holes is greater than the first distance, which can make the one end of the first tube segment 121 connected to the second tube segment 122 and the one end of the second tube segment 122 connected to the first tube segment 121 staggered along the first direction x, further reduce the blocking area of the one end of the first tube segment 121 connected to the second tube segment 122 and the one end of the second tube segment 122 connected to the first tube segment 121 along the airflow direction y, increase the heat exchange area of the second tube segment 122 to the airflow, and improve the heat exchange efficiency; and the third distance between the two first tube holes is greater than the first distance, which can also make the one end of the third tube segment 123 connected to the second tube segment 122 and the one end of the second tube segment 122 connected to the third tube segment 123 staggered along the first direction x, further reduce the blocking area of the one end of the third tube segment 123 connected to the second tube segment 122 and the one end of the second tube segment 122 connected to the third tube segment 123 along the airflow direction y, increase the heat exchange area of the second tube segment 122 to the airflow, and improve the heat exchange efficiency.

[0050] Optionally, the two first tube holes of the embodiment are staggered along the airflow direction y, and the two second tube holes of the second fin 112 are staggered along the airflow direction y.

[0051] Because the two first tube holes of the embodiment are staggered along the airflow direction y, and the two second tube holes of the second fin 112 are staggered along the airflow direction y, the position of the tube segment can be fixed better, and the stability of the evaporator can be improved.

[0052] Optionally, the fin 11 of the embodiment is provided with an opening, the projection of the second tube segment 122 on the fin 11 along the second direction z covers the opening, and the projection of the first tube segment 121 on the fin 11 along the second direction z and the projection of the third tube segment 123 on the fin 11 along the second direction z are located on the two sides of the opening; wherein the second direction z is perpendicular to the first direction x and the airflow direction y.

[0053] Compared with the two-tube-hole fin without the opening, the two tube holes of the embodiment are provided with the opening, which is easier to twist and deform the evaporator during the processing of the evaporator, and the staggered arrangement is formed, so that the processing is more convenient.

[0054] Further, compared with the two single-tube-hole fins which are arranged and combined into the first fin 111 or the second fin 112, the two tube holes of the embodiment are provided with the opening, and the embodiment only needs to process one two-tube-hole fin, which is more cost-saving.

[0055] Further, compared with the two-tube-hole fin without the opening, the two tube holes of the embodiment are provided with the opening, which can form a gap between the two tube holes to increase the gap channel for the airflow, and can increase the fin edge part between the two tube holes of the fin to bring the leading edge effect and improve the heat exchange efficiency.

[0056] Further, compared with the first fin 111 or the second fin 112 formed by rearranging and combining two single-tube-hole fins, the two tube holes of the embodiment are provided with the opening, so that the contact area of the fin structure inside the evaporator with the airflow is increased, and the fin part of the first opening 16 or the second opening 17 can also participate in the heat exchange process, thereby improving the heat exchange efficiency.

[0057] Optionally, the opening includes a first opening and a second opening, the first opening 16 is arranged between the two first tube holes, and the second opening 17 is arranged between the two second tube holes.

[0058] Optionally, the fin 11 of the embodiment is provided with the opening, the projection of the second tube segment 122 on the fin 11 along the second direction z covers the opening, or the projection of the first tube segment 121 on the fin 11 along the second direction z and the projection of the third tube segment 123 on the fin 11 along the second direction z are respectively located on two sides of the opening; wherein the second direction z is perpendicular to the first direction x and the airflow direction y.

[0059] Compared with the two-tube-hole fin without the opening, the two tube holes of the embodiment are provided with the opening, which is more convenient for processing in an application scenario, because the evaporator is more likely to be twisted and deformed during the processing of the evaporator, thereby forming staggered arrangement.

[0060] Further, compared with the first fin 111 or the second fin 112 formed by rearranging and combining two single-tube-hole fins, the two tube holes of the embodiment are provided with the opening, so that the contact area of the fin structure inside the evaporator with the airflow is increased, and the fin part of the first opening 16 or the second opening 17 can also participate in the heat exchange process, thereby improving the heat exchange efficiency.

[0061] Further, compared with the two-tube-hole fin without the opening, the two tube holes of the embodiment are provided with the opening, which can form a gap between the two tube holes to increase the gap channel for the airflow, and can increase the fin edge part between the two tube holes of the fin, thereby bringing the leading edge effect and improving the heat exchange efficiency.

[0062] Further, compared with the first fin 111 or the second fin 112 formed by rearranging and combining two single-tube-hole fins, the two tube holes of the embodiment are provided with the opening, so that the contact area of the fin structure inside the evaporator with the airflow is increased, and the fin part of the first opening 16 or the second opening 17 can also participate in the heat exchange process, thereby improving the heat exchange efficiency.

[0063] Optionally, the opening includes a first opening and a second opening, the first opening 16 is arranged between the two first tube holes, and the second opening 17 is arranged between the two second tube holes.

[0064] Optionally, the two first openings 16 of the embodiment can be quadrilaterals.

[0065] Optionally, the two second openings 17 of the embodiment can be quadrilaterals.

[0066] Optionally, the two first holes 16 of the embodiment can be square.

[0067] Optionally, the two second holes 17 of the embodiment can be square.

[0068] In other embodiments, the number of first holes and the number of second holes are not limited.

[0069] In other embodiments, the shape of the above-mentioned holes can also be other shapes, or the shape of the first holes can be different from the shape of the second holes.

[0070] Optionally, the two first tube holes in the first fin 111 of the embodiment correspond to two fin areas of the first fin 111 and are staggered along the airflow direction y.

[0071] Compared with the first fin formed by combining two single-tube-hole fins, since the two first tube holes in the first fin 111 of the embodiment correspond to two fin areas and are staggered along the airflow direction y, the leading edge effect of the edge part of the area between the two tube holes of the first fin 111 can be increased, and the heat exchange efficiency can be improved.

[0072] Optionally, the two second tube holes in the second fin 112 of the embodiment correspond to two fin areas of the second fin 112 and are staggered along the airflow direction y.

[0073] Compared with the second fin formed by combining two single-tube-hole fins, since the two second tube holes in the second fin 112 of the embodiment correspond to two fin areas and are staggered along the airflow direction y, the leading edge effect of the edge part of the area between the two tube holes of the second fin 112 can be increased, and the heat exchange efficiency can be improved.

[0074] Optionally, the fin 11 of the embodiment includes a plurality of second fin groups arranged at intervals along the airflow direction y, the first tube segment 121 includes a plurality of first sub-tube segments, the third tube segment 123 includes a plurality of second sub-tube segments, and the plurality of second fin groups, the plurality of first sub-tube segments, and the plurality of second sub-tube segments are one-to-one correspondingly arranged.

[0075] Because the plurality of second fin groups of the embodiment are arranged at intervals along the airflow direction y, the first tube segment 121 includes a plurality of first sub-tube segments, and the third tube segment 123 includes a plurality of second sub-tube segments, the contact area between the evaporator and the airflow can be increased, thereby improving the heat exchange amount and the heat exchange efficiency.

[0076] Optionally, the fin 11 of the embodiment includes a plurality of first fins 111 arranged at intervals along a second direction z and a plurality of second fin groups arranged at intervals along the second direction z; wherein the second direction z is perpendicular to the first direction x and the airflow direction y.

[0077] Because the plurality of fins are arranged along the second direction z in the embodiment to form a plurality of gaps extending along the airflow direction y, the air has a larger flow space when flowing through the evaporator, the contact area between the tube segment and the airflow is increased, and the heat exchange efficiency is improved.

[0078] The application further provides an evaporator of another embodiment, as shown in Figure 2 Figure 2 is a structural schematic view of an evaporator of an embodiment of the application. The embodiment is different from the Figure 1 embodiment in that the first opening 21 between the two first tube holes is circular; and the second opening 22 between the two second tube holes is circular.

[0079] Compared with the quadrangular opening structure, the circular opening structure can increase the edge part of the fin between the two tube holes, bring the leading edge effect, and improve the heat dissipation effect.

[0080] The application further provides a first fin of another embodiment, as shown in Figure 3 Figure 3 is a structural schematic view of the first fin of another embodiment of the application. The embodiment is different from the Figure 1 embodiment in that the first fin 111 further comprises: a first heat dissipation part 31 connected with the end of the first opening 16 and arranged at an angle with the radial direction of the first opening 16.

[0081] Because the first fin 111 comprises the first heat dissipation part 31, the contact area between the first fin 111 inside the evaporator and the airflow can be further increased, the first fin 111 and the first heat dissipation part 31 at the first opening 16 can both participate in the heat exchange process, and the heat exchange efficiency is further improved; and because the first fin 111 comprises the first heat dissipation part 31, the edge part of the first fin 111 inside the evaporator can be further increased, the leading edge effect is brought, the heat exchange amount is improved, and the heat exchange efficiency is further improved.

[0082] Further, because the first heat dissipation part 31 is connected with the end of the first opening 16 and arranged at an angle with the radial direction of the first opening 16, the first heat dissipation part 31 becomes a part not fitted with the first opening 16 and the first fin 111, and in this way, the heat dissipation area of the first fin 111 can be increased, and the heat exchange efficiency can be improved.

[0083] Optionally, the first heat dissipation part 31 extends along a first plane, and the first plane is a vertical plane of the airflow direction y or a plane arranged at an angle with the vertical plane.

[0084] The above-mentioned manner can make the airflow flow towards the first heat dissipation part 31, so as to slow down the airflow speed, so that the heat dissipation part and the airflow can better exchange heat, and the heat exchange efficiency is improved.

[0085] In other embodiments, the first heat dissipation part 31 can also be arranged in other forms​​Figure 2 Embodiments make similar improvements, which are not described here.

[0086] The application further proposes a second fin of another embodiment, as shown in Figure 4 Figure 4 is a structural schematic diagram of another embodiment of the second fin of the application. The embodiment is different from the Figure 1 Embodiment in that the second fin 112 further comprises: a second heat dissipation part 41, connected with the end of the second opening 17, and arranged at an angle with the radial direction of the second opening 17.

[0087] Because the second fin 112 comprises the second heat dissipation part 41, the contact area between the second fin 112 inside the evaporator and the airflow can be further increased, and both the second fin 112 and the second heat dissipation part 41 at the second opening 17 can participate in the heat exchange process, further improving the heat exchange efficiency; and because the second fin 112 comprises the second heat dissipation part 41, the edge part of the second fin 112 inside the evaporator can be further increased, bringing about the leading edge effect, improving the heat exchange amount, and further improving the heat exchange efficiency.

[0088] Further, because the second heat dissipation part 41 is connected with the end of the second opening 17 and arranged at an angle with the radial direction of the second opening 17, the second heat dissipation part 41 becomes a part that does not fit with the second opening 17 and the second fin 112, and in this way, the heat dissipation area of the second fin 112 can be increased, and the heat exchange efficiency can be improved.

[0089] Optionally, the second heat dissipation part 41 extends along a first plane, and the first plane is a vertical plane of the airflow direction y or a plane arranged at an angle with the vertical plane.

[0090] The above-mentioned manner can make the airflow flow towards the second heat dissipation part 41, so as to slow down the airflow speed, so that the heat dissipation part and the airflow can better exchange heat, and the heat exchange efficiency can be improved.

[0091] In other embodiments, a first heat dissipation part can be arranged at the end of the first opening, and a second heat dissipation part can be arranged at the end of the second opening.

[0092] ​By the above manner, on one hand, the contact area between the first fins inside the evaporator and the airflow can be further increased, the first fins and the first heat dissipation portions at the first openings can participate in the heat exchange process, and the heat exchange efficiency is further improved; the first fins include the first heat dissipation portions, the edge portions of the first fins inside the evaporator can be further increased, the leading edge effect is brought, the heat exchange amount is improved, and the heat exchange efficiency is further improved; on the other hand, the contact area between the second fins inside the evaporator and the airflow can be further increased, the second fins and the second heat dissipation portions at the second openings can participate in the heat exchange process, and the heat exchange efficiency is further improved; the second fins include the second heat dissipation portions, the edge portions of the second fins inside the evaporator can be further increased, the leading edge effect is brought, the heat exchange amount is improved, and the heat exchange efficiency is further improved.

[0093] In other embodiments, the shape of the heat dissipation portion is not limited.

[0094] In other embodiments, the relative position of the heat dissipation portion and the opening is not limited.

[0095] In other embodiments, the following improvements can also be made to the embodiments. Figure 2 Embodiments are not described here.

[0096] The application further proposes another embodiment of the evaporator, as shown in Figure 5 , and Figure 5 is a structural schematic diagram of an embodiment of the evaporator of the application. The difference between this embodiment and the Figure 1 embodiment is that the first fin 111 includes the first sub-fin 51 and the second sub-fin 52 arranged at intervals along the first direction x. One end of the second pipe segment 122 is arranged at the first sub-fin 51, and the other end of the second pipe segment 122 is arranged at the second sub-fin 52.

[0097] Compared with the Figure 1 embodiment, the first fin 111 of this embodiment includes the first sub-fin 51 and the second sub-fin 52 arranged at intervals along the first direction x. Since there is no corresponding fin structure connection between the first sub-fin 51 and the second sub-fin 52, in an application scenario, it is easier to twist and deform the evaporator during the processing of the evaporator, forming staggered arrangement, and thus it is more convenient for processing.

[0098] Optionally, the second fin 112 includes the third sub-fin 53 and the fourth sub-fin 54 arranged at intervals along the first direction x, the first pipe segment 121 is arranged at the third sub-fin 53, and the third pipe segment 123 is arranged at the fourth sub-fin 54.

[0099] Compared with the Figure 1Compared with the prior art, the second fin 112 of the embodiment comprises a third sub-fin 53 and a fourth sub-fin 54 which are spaced apart along the first direction x. In an application scenario, the evaporator is more easily twisted and deformed during processing of the evaporator, and staggered arrangement is formed, so that processing is more convenient.

[0100] The application further provides a refrigerator comprising the evaporator.

[0101] In other embodiments, the evaporator of the application can also be used in other heat exchange devices.

[0102] Compared with the prior art, the evaporator provided by the application comprises fins and heat exchange pipe units arranged on the fins. Since the heat exchange pipe units are integrally formed single pipes, welding processes are not required between pipe sections, which can improve problems such as leakage of heat exchange medium caused by welding of multiple pipes, improve heat exchange efficiency, and save costs. Further, the first pipe section and the third pipe section are spaced apart along the first direction, which can provide a larger flow space for air flowing through the evaporator, increase the contact area between the pipe sections and the airflow, and improve the heat exchange efficiency. Further, the distance between the one end of the first pipe section connected to the second pipe section and the one end of the third pipe section connected to the second pipe section along the first direction and the distance between the other end of the first pipe section and the other end of the third pipe section along the first direction are different, so that the one end of the first pipe section connected to the second pipe section and the other end of the first pipe section are staggered along the first direction, further reducing the blocking area of the one end of the first pipe section connected to the second pipe section and the other end of the first pipe section along the airflow direction, increasing the heat exchange area of the first pipe section for the airflow, and improving the heat exchange efficiency. Further, the distance between the one end of the first pipe section connected to the second pipe section and the one end of the third pipe section connected to the second pipe section along the first direction and the distance between the other end of the first pipe section and the other end of the third pipe section along the first direction are different, so that the one end of the third pipe section connected to the second pipe section and the other end of the third pipe section are staggered along the first direction, further reducing the blocking area of the one end of the third pipe section connected to the second pipe section and the other end of the third pipe section along the airflow direction, increasing the heat exchange area of the third pipe section for the airflow, and improving the heat exchange efficiency. Therefore, the application can improve problems such as leakage of heat exchange medium caused by welding of multiple pipes, improve heat exchange efficiency, and save costs.

[0103] The above is only an embodiment of the application, and does not limit the patent scope of the application. Any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the application.

Claims

1. An evaporator, characterized by The application relates to a fin and a heat exchange tube unit. The fin comprises: a fin; a heat exchange tube unit arranged on the fin, comprising a first tube segment, a second tube segment and a third tube segment, two ends of the second tube segment being connected to the first tube segment and the third tube segment respectively, the first tube segment and the third tube segment extending towards the same side of the second tube segment, and the first tube segment and the third tube segment being arranged in a first direction. The distance between one end of the second tube segment connected to the first tube segment and one end of the second tube segment connected to the third tube segment in the first direction is different from the distance between the other end of the first tube segment and the other end of the third tube segment in the first direction. The first direction is perpendicular to the airflow direction. The fin is provided with an opening, and the projection of the first tube segment on the fin in a second direction and the projection of the third tube segment on the fin in the second direction are located on the two sides of the opening respectively, and the second direction is perpendicular to the first direction and the airflow direction. The fin comprises: a first fin; a second fin group comprising two second fins arranged on the same side of the first fin and spaced apart from the first fin in the airflow direction; the second tube segment is arranged on the first fin, and one end of the second tube segment connected to the first tube segment and one end of the second tube segment connected to the third tube segment are arranged on the second fin close to the first fin, and the other end of the first tube segment and the other end of the third tube segment are arranged on the other second fin; the second fin is provided with two second tube holes, and the two ends of the first tube segment are arranged in the second tube holes of one of the two second fins respectively, and the two ends of the third tube segment are arranged in the second tube holes of the other of the two second fins respectively; 2. The evaporator of claim 1, wherein, the first distance between the two second tube holes on the second fin close to the first fin in the first direction is different from the second distance between the two second tube holes on the other second fin in the first direction.

3. The evaporator of claim 2, wherein, The projection of the second tube segment on the fin in the second direction covers the opening.

4. The evaporator of claim 3, wherein, The fin further comprises a heat dissipation part connected to the end of the opening and arranged at an angle with the radial direction of the opening.

5. The evaporator of claim 1, wherein, The heat dissipation part extends along a first plane, and the first plane is a vertical plane of the airflow direction or a plane arranged at an angle with the vertical plane.

6. The evaporator of claim 1, wherein The first tube segment and the third tube segment are at least partially staggered in the airflow direction.

7. The evaporator of claim 6, wherein The first distance is smaller than the second distance.

8. The evaporator of claim 1, wherein The first fin is provided with two first tube holes, and the two ends of the second tube segment are arranged in the two first tube holes of the first fin respectively, and the third distance between the two first tube holes is greater than the first distance.

9. The evaporator of claim 1, wherein, The two first tube holes are staggered in the airflow direction, and the two second tube holes of the second fin are staggered in the airflow direction. The opening comprises a first opening and / or a second opening, and the first opening is arranged between the two first tube holes, and / or the second opening is arranged between the two second tube holes.

10. The evaporator according to any one of claims 1 to 9, characterized in that The fins include a plurality of second fin groups arranged at intervals along the airflow direction, the first tube section includes a plurality of first sub-tube sections, the third tube section includes a plurality of second sub-tube sections, and the plurality of second fin groups, the plurality of first sub-tube sections, and the plurality of second sub-tube sections are arranged one-to-one.

11. The evaporator of claim 3, wherein, The fins include a plurality of first fins arranged at intervals along the second direction and a plurality of second fin groups arranged at intervals along the second direction. The second direction is perpendicular to the first direction and the airflow direction.

12. A refrigerator characterized by comprising: An evaporator comprising any one of claims 1 to 11.

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