Heat exchanger and heat pump system

Abstract

The utility model discloses a heat exchanger and a heat pump system, the heat exchanger comprises a corrugated pipe, the peripheral wall of the corrugated pipe is provided with a spiral groove which spirally extends along the length direction of the corrugated pipe; and the capillary tube is wound in the spiral groove of the corrugated pipe. According to the heat exchanger, the corrugated pipe and the capillary pipe are arranged, the capillary pipe is wound in the spiral groove in the peripheral wall of the corrugated pipe, the length of a heat exchange path of flowing media in the capillary pipe and the corrugated pipe can be increased, the contact area of the capillary pipe and the corrugated pipe can be increased, and therefore the heat exchange area of the corrugated pipe and the capillary pipe is increased; the heat exchange efficiency of a flowing medium in the corrugated pipe and a flowing medium in the capillary pipe is improved, and therefore the heat pump capacity of a heat pump system provided with the heat exchanger is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to air treatment equipment technical field especially is related to a heat exchanger and heat pump system. BACKGROUND

[0002] In the related art, as an energy-saving hot water supply device, the heat exchange performance of the system and water is related to the material, combined structure, heat conduction contact area and heat exchange area of the water side heat exchanger, and these factors comprehensively determine the heat exchange performance of the water side heat exchanger. The heat exchanger in the related art has low heat exchange performance, resulting in low heat pump capacity of the heat pump system. SUMMARY

[0003] The utility model discloses at least one of the technical problems in the prior art. To this end, the utility model provides a heat exchanger, and the heat exchanger has high heat exchange efficiency.

[0004] The utility model discloses further provide a heat pump system, the heat pump system includes above-mentioned heat exchanger.

[0005] The heat exchanger according to the utility model embodiment, the spiral groove is formed on the outer circumferential wall of the corrugated pipe, and the capillary tube is wound in the spiral groove, so that the length of the heat exchange path of the flowing medium in the capillary tube and the corrugated pipe can be increased, the contact area of the capillary tube and the corrugated pipe can be increased, the heat exchange area of the corrugated pipe and the capillary tube can be increased, the heat exchange efficiency of the flowing medium in the corrugated pipe and the capillary tube can be improved, and the heat pump capacity of the heat pump system provided with the heat exchanger can be improved.

[0006] The heat exchanger according to the utility model embodiment, the spiral groove is formed on the outer circumferential wall of the corrugated pipe, and the capillary tube is wound in the spiral groove, so that the length of the heat exchange path of the flowing medium in the capillary tube and the corrugated pipe can be increased, the contact area of the capillary tube and the corrugated pipe can be increased, the heat exchange area of the corrugated pipe and the capillary tube can be increased, the heat exchange efficiency of the flowing medium in the corrugated pipe and the capillary tube can be improved, and the heat pump capacity of the heat pump system provided with the heat exchanger can be improved.

[0007] According to some embodiments of the utility model, the outer diameter of the corrugated pipe is D, and D is 12mm-13mm;

[0008] And / or, the outer diameter of the capillary tube is D1, and D1 is 3.2mm-3.8mm;

[0009] And / or, the pitch of the corrugated pipe is P, and satisfies: 18mm≤P≤25mm;

[0010] And / or, the depth of the spiral groove is h, and satisfies: 1.6mm≤h≤1.9mm;

[0011] And / or, the width of the spiral groove is C, and satisfies: 3.5mm≤C≤4.5mm;

[0012] And / or, the length of the bellows is L1, L1 is 9.5m-10m;

[0013] And / or, the length of the capillary tube is L2, L2 is 55m-65m;

[0014] And / or, the gap distance between the capillary tube and the inner wall of the spiral groove is d, and satisfies: 0.05mm

[0015] And / or, the depth of the spiral groove is greater than or equal to half of the outer diameter of the capillary tube.

[0016] According to some embodiments of the present application, along the circumferential direction of the bellows, the spiral grooves are a plurality of spaced apart, the capillary tube is a plurality of corresponding to the plurality of spiral grooves, and the plurality of capillary tubes are arranged in parallel.

[0017] In some embodiments of the present application, the number of capillary tubes is N, and satisfies: N≥3.

[0018] According to some embodiments of the present application, the capillary tube and the inner wall of the spiral groove are filled with a heat conducting member.

[0019] In some embodiments of the present application, along the axial direction of the bellows, the heat conducting member is filled between the adjacent two capillary tubes.

[0020] In some embodiments of the present application, along the radial direction of the bellows, the radial outer end of the heat conducting member is flush with or exceeds the radial outer end of the capillary tube.

[0021] In some embodiments of the present application, the heat conducting member is a tin member or a zinc member.

[0022] According to some embodiments of the present application, at least one of the two ends of the bellows in the length direction is connected with a connecting pipe, the connecting pipe is a light pipe, the outer diameter of the connecting pipe is D3, the inner diameter of the bellows is D4, and satisfies: D3

[0023] According to some embodiments of the present application, at least one of the bellows and the capillary tube is a copper pipe; and / or, the bellows is coiled.

[0024] The heat pump system according to the embodiments of the present application comprises the heat exchanger.

[0025] According to the heat pump system of the embodiment of the present application, the heat exchanger, the corrugated pipe and the capillary pipe are arranged, the capillary pipe is wound in the spiral groove of the outer circumferential wall of the corrugated pipe, the length of the heat exchange path of the flowing medium in the capillary pipe and the corrugated pipe is increased, the contact area of the capillary pipe and the corrugated pipe is increased, the heat exchange area of the corrugated pipe and the capillary pipe is increased, the heat exchange efficiency of the flowing medium in the corrugated pipe and the capillary pipe is increased, and the heat pump capacity of the heat pump system provided with the heat exchanger is improved.

[0026] Additional aspects and advantages of the present application will be described in part below with reference to the description and will be apparent from the description, or can be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0027] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the description, including the accompanying drawings, in which:

[0028] Figure 1 is a perspective view of the heat exchanger according to the embodiment of the present application;

[0029] Figure 2 is a perspective view of the heat exchanger according to the embodiment of the present application, in which the gap between the corrugated pipe and the capillary pipe is filled with the heat-conducting member;

[0030] Figure 3 is Figure 2 is an enlarged view of A in FIG.

[0031] Figure 4 is a front view of the heat exchanger according to the embodiment of the present application;

[0032] Figure 5 is a sectional view along the line B-B in FIG. Figure 4

[0033] Figure 6 is a top view according to the embodiment of the present application;

[0034] Figure 7 is a partial enlarged view of the heat exchanger according to the embodiment of the present application.

[0035] REFERENCE NUMERALS:

[0036] 100, heat exchanger;

[0037] 1, corrugated pipe; 11, spiral groove;

[0038] 2, capillary pipe;

[0039] 3, heat-conducting member;

[0040] 4, connecting pipe. DETAILED DESCRIPTION​

[0041] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0042] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0043] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] The heat exchanger 100 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0045] like Figures 1-3 As shown, for reference Figure 7 The heat exchanger 100 according to an embodiment of the present invention includes a bellows 1 and a capillary tube 2.

[0046] Specifically, the outer circumferential wall of the bellows 1 has helical grooves 11 extending along the length direction of the bellows 1, and the capillary tube 2 is wound in the helical grooves 11 of the bellows 1, so that the length of the heat exchange path of the capillary tube 2 and the medium flowing in the bellows 1 can be increased, the contact area of the capillary tube 2 and the bellows 1 can be increased, the heat exchange area of the bellows 1 and the capillary tube 2 can be increased, the heat exchange efficiency of the medium flowing in the bellows 1 and the medium flowing in the capillary tube 2 can be improved, and thus the heat pump capacity of the heat pump system provided with the heat exchanger 100 can be improved.

[0047] Optionally, water can flow in the bellows 1, and refrigerant such as carbon dioxide can flow in the capillary tube 2.

[0048] It can be understood that the bellows 1 can be processed inwardly from a light pipe to form the helical grooves 11, and along the axial direction of the bellows 1, a protruding structure is formed between adjacent two helical grooves 11, the outer diameter of the bellows 1 is the diameter of the protruding part, and the inner diameter of the bellows 1 is the corresponding inner diameter of the protruding part. The inner circumferential wall of the bellows 1 can form a helical protrusion at the position corresponding to the helical groove 11.

[0049] According to the heat exchanger 100 provided in the embodiments of the present application, the capillary tube 2 is wound in the helical grooves 11 of the outer circumferential wall of the bellows 1, so that the length of the heat exchange path of the capillary tube 2 and the medium flowing in the bellows 1 can be increased, the contact area of the capillary tube 2 and the bellows 1 can be increased, the heat exchange area of the bellows 1 and the capillary tube 2 can be increased, the heat exchange efficiency of the medium flowing in the bellows 1 and the medium flowing in the capillary tube 2 can be improved, and thus the heat pump capacity of the heat pump system provided with the heat exchanger 100 can be improved.

[0050] In some embodiments of the present application, as shown in Figure 7 It can be understood that the bellows 1 can be processed inwardly from a light pipe to form the helical grooves 11, and along the axial direction of the bellows 1, a protruding structure is formed between adjacent two helical grooves 11, the outer diameter of the bellows 1 is the diameter of the protruding part, and the inner diameter of the bellows 1 is the corresponding inner diameter of the protruding part. The inner circumferential wall of the bellows 1 can form a helical protrusion at the position corresponding to the helical groove 11.

[0051] It should be noted that the wall thicknesses of the bellows 1 and the capillary tube 2 are both greater than the minimum wall thickness required by the relevant regulations.

[0052] In some embodiments of the utility model, the outer diameter of capillary tube 2 is D1, D1 is 3.2mm-3.8mm, for example, the outer diameter D1 of capillary tube 2 can be 3.3mm, 3.4mm, 3.5mm, 3.6mm, 3.7mm or 3.8mm etc. Thus the contact area of bellows 1 and capillary tube 2 can be improved, the heat exchange efficiency of capillary tube 2 and the medium flowing in bellows 1 can be improved, and the performance of heat pump system can reach the best interval.

[0053] In some embodiments of the utility model, as shown in Figure 7 The pitch of bellows 1 is P, and satisfies: 18mm≤P≤25mm, for example, the pitch P of bellows 1 can be 19mm, 20mm, 21mm, 22mm, 23mm, 24mm or 25mm etc. Thus the length of capillary tube 2 can be increased under the premise of the same length of bellows 1, the length of heat exchange path of capillary tube 2 and the medium flowing in bellows 1 can be increased, the length of capillary tube 2 can be prevented from being too long, the heat exchange efficiency of capillary tube 2 and the medium flowing in bellows 1 can be improved, and the performance of heat pump system can reach the best interval.

[0054] In some embodiments of the utility model, the depth of spiral groove 11 is h, and satisfies: 1.6mm≤h≤1.9mm, for example, the depth h of spiral groove 11 can be 1.65mm, 1.7mm, 1.75mm, 1.8mm or 1.85mm etc. Thus the structure and processing technology of bellows 1 can be simplified, capillary tube 2 can be conveniently wound on bellows 1, the heat exchange area of capillary tube 2 and bellows 1 can be improved, the heat exchange efficiency of the medium flowing in bellows 1 and capillary tube 2 can be improved, and the heat pump capacity of heat pump system provided with the heat exchanger 100 can be improved.

[0055] In some embodiments of the utility model, as shown in Figure 7 The width of spiral groove 11 is C, and satisfies: 3.5mm≤C≤4.5mm, for example, the width C of spiral groove 11 can be 3.6mm, 3.7mm, 3.8mm, 3.9mm, 4mm, 4.1mm, 4.2mm, 4.3mm or 4.4mm etc. Thus the structure and processing technology of bellows 1 can be simplified, capillary tube 2 can be conveniently wound on bellows 1, the heat exchange area of capillary tube 2 and bellows 1 can be improved, the heat exchange efficiency of the medium flowing in bellows 1 and capillary tube 2 can be improved, and the heat pump capacity of heat pump system provided with the heat exchanger 100 can be improved.

[0056] In some embodiments of the utility model, the length of the bellows 1 is L1, and L1 is 9.5m-10m. For example, the length L1 of the bellows 1 can be 9.6m, 9.7m, 9.8m or 9.9m, etc. In this way, the length of the bellows 1 can be increased, the length of the heat exchange path of the flowing medium in the capillary tube 2 and the bellows 1 can be increased, the contact area of the capillary tube 2 and the bellows 1 can be increased, the heat exchange area of the bellows 1 and the capillary tube 2 can be improved, the heat exchange efficiency of the flowing medium in the bellows 1 and the flowing medium in the capillary tube 2 can be improved, and thus the heat pump capacity of the heat pump system provided with the heat exchanger 100 can be improved, and the cost can be reduced at the same time.

[0057] In some embodiments of the utility model, the length of the capillary tube 2 is L2, and L2 is 55m-65m. For example, the length of the capillary tube 2 can be 56m, 57m, 58m, 59m, 60m, 61m, 62m, 63m or 64m, etc. In this way, the length of the bellows 1 can be increased, the length of the heat exchange path of the flowing medium in the capillary tube 2 and the bellows 1 can be increased, the contact area of the capillary tube 2 and the bellows 1 can be increased, the heat exchange area of the bellows 1 and the capillary tube 2 can be improved, the heat exchange efficiency of the flowing medium in the bellows 1 and the flowing medium in the capillary tube 2 can be improved, and thus the heat pump capacity of the heat pump system provided with the heat exchanger 100 can be improved, and the cost can be reduced at the same time.

[0058] In some embodiments of the utility model, as shown in Figure 4 and Figure 5 , the gap distance between the capillary tube 2 and the inner wall of the spiral groove 11 is d, and 0.05mm

[0059] In some embodiments of the utility model, the depth of the spiral groove 11 is greater than or equal to half of the outer diameter of the capillary tube 2, the contact area of the capillary tube 2 and the bellows 1 can be increased, the heat exchange area of the bellows 1 and the capillary tube 2 can be improved, the heat exchange efficiency of the flowing medium in the bellows 1 and the flowing medium in the capillary tube 2 can be improved, a higher heat exchange coefficient can be achieved, and thus the heat pump capacity of the heat pump system provided with the heat exchanger 100 can be improved.

[0060] In some embodiments of the utility model, along the circumferential direction of corrugated pipe 1, spiral groove 11 is multiple interval arrangement, capillary 2 is multiple corresponding with multiple spiral groove 11, multiple capillary 2 parallelly arranged. Thus, can increase the length of the total heat exchange path of capillary 2 and the medium flowing in corrugated pipe 1, can increase the contact area of capillary 2 and corrugated pipe 1, thereby improve the heat exchange area of corrugated pipe 1 and capillary 2, improve the heat exchange efficiency of the medium flowing in corrugated pipe 1 and the medium flowing in capillary 2, thereby improve the heat pump capacity of the heat pump system of setting this heat exchanger 100.

[0061] Optionally, the number of capillary tubes 2 is N, and satisfies: N≥3. For example, the number of capillary tubes 2 can be three, four or five, etc. Thus, the length of the total heat exchange path of capillary tubes 2 and the medium flowing in corrugated pipe 1 can be increased, the contact area of capillary tubes 2 and corrugated pipe 1 can be increased, thereby improving the heat exchange area of corrugated pipe 1 and capillary tubes 2, improving the heat exchange efficiency of the medium flowing in corrugated pipe 1 and the medium flowing in capillary tubes 2, thereby improving the heat pump capacity of the heat pump system of setting this heat exchanger 100.

[0062] In some embodiments of the utility model, the inner wall between capillary 2 and spiral groove 11 is filled with heat conduction piece 3. When capillary 2 is wound on corrugated pipe 1, due to process problems, capillary 2 cannot be completely attached to the inner wall of spiral groove 11, and there is a gap between capillary 2 and the inner wall of spiral groove 11. Filling the gap between capillary 2 and the inner wall of spiral groove 11 with heat conduction piece 3 can make capillary 2 attach to heat conduction piece 3, heat conduction piece 3 attach to the inner wall of spiral groove 11, reduce heat transfer resistance, make the heat exchange effect between capillary 2 and the inner wall of spiral groove 11 better, improve the heat exchange efficiency of the medium flowing in corrugated pipe 1 and the medium flowing in capillary 2, thereby improve the heat pump capacity of the heat pump system of setting this heat exchanger 100.

[0063] In some embodiments of the utility model, as shown in Figure 2 and Figure 3 , along the axial direction of corrugated pipe 1, the gap between adjacent two capillary tubes 2 is filled with heat conduction piece 3. After capillary 2 is wound on spiral groove 11, part of capillary 2 protrudes from the outer peripheral wall of corrugated pipe 1, and there is a groove between adjacent two capillary tubes 2 along the axial direction of corrugated pipe 1. Heat conduction piece 3 is filled in the groove, and heat conduction piece 3 can attach to the outer peripheral wall of corrugated pipe 1 and the outer peripheral wall of capillary 2, further reducing heat transfer resistance, increasing the heat exchange area between capillary 2 and corrugated pipe 1, improving the heat exchange effect between capillary 2 and corrugated pipe 1, improving the heat exchange efficiency of the medium flowing in corrugated pipe 1 and the medium flowing in capillary 2, thereby improving the heat pump capacity of the heat pump system of setting this heat exchanger 100.

[0064] In some embodiments of the utility model, as shown inFigure 2 and Figure 3 As shown in the drawings, along the radial direction of the bellows 1, the radial outer end of the heat-conducting piece 3 is flush with or exceeds the radial outer end of the capillary tube 2. It can be understood that, along the axial direction of the bellows 1, the heat-conducting piece 3 filled between adjacent two capillary tubes 2 can be filled just to the position flush with the end of the capillary tube 2 away from the groove bottom wall, or completely cover the capillary tube 2. In this way, the heat exchange area between the capillary tube 2 and the bellows 1 can be increased, the heat exchange effect between the capillary tube 2 and the bellows 1 can be improved, and the heat exchange efficiency of the flowing medium in the bellows 1 and the flowing medium in the capillary tube 2 can be improved, thereby improving the heat pump capacity of the heat pump system provided with the heat exchanger 100.

[0065] It can be understood that the filling of the heat-conducting piece 3 should be uniform, and the gap between the capillary tube 2 and the bellows 1 is filled by surface treatment. Wherein, the outer diameter of the bellows 1 is D, the outer diameter of the capillary tube 2 is D1, the gap between the capillary tube 2 and the inner wall of the spiral groove 11 is d, the outer peripheral wall of the heat-conducting piece 3 after filling is formed as a cylindrical surface, the diameter of the outer peripheral wall of the heat-conducting piece 3 is D2, and D2>D+D1+d is satisfied.

[0066] Optionally, the heat-conducting piece 3 is a tin piece or a zinc piece. The tin piece and the zinc piece are good solid heat-conducting pieces with a melting point less than 500 DEG C, and also have the effect of protecting the copper pipe from corrosion.

[0067] In some embodiments of the present application, as shown in the drawings, Figures 2-4 At least one end of the two ends of the bellows 1 in the length direction is connected with a connecting pipe 4, the connecting pipe 4 is a light pipe, the light pipe is a pipe structure with smooth inner and outer peripheral walls, and the inner and outer peripheral walls of the light pipe are free of protrusions and grooves. In this way, the heat exchanger 100 is convenient to connect with other pipelines in the heat pump system.

[0068] Further, as shown in the drawings, Figure 6 The outer diameter of the connecting pipe 4 is D3, the inner diameter of the bellows 1 is D4, and D3

[0069] In the examples shown in the drawings, Figure 1 and Figure 2 The two ends of the bellows 1 in the length direction are both connected with the connecting pipe 4, thereby facilitating the connection of the heat exchanger 100 with other pipelines in the heat pump system.

[0070] In some embodiments of the present application, at least one of the bellows 1 and the capillary tube 2 is a copper pipe, the copper pipe has high heat conductivity, the heat exchanger 100 has good heat exchange effect, and the heat pump capacity of the heat pump system provided with the heat exchanger 100 can be improved.

[0071] In some embodiments of the present application, as shown in Figure 1 and Figure 2 The corrugated pipe 1 is coiled, thereby reducing the area occupied by the heat exchanger 100 and the volume of the heat exchanger 100. In addition, the coiled heat exchanger 100 forms a space in the middle of the heat exchanger 100, which can be used to place other components, such as the compressor of the heat pump system, and reasonably utilize the space.

[0072] The relationship between the number of coils and the effective total length is shown in Table 1 and Table 2 below. In addition, the heat exchange coefficient corresponding to the type of corrugated pipe 1 and the depth of the corrugated pipe 1 around the capillary tube 2 is shown in Table 3 below.

[0073] Table 1

[0074]

[0075] Table 2

[0076]

[0077] From Table 1 and Table 2 above, under the same number of coils, the larger the water side pipe diameter, the higher the heat exchange area, but the heat transfer coefficient K decreases (caused by the water side), and the comprehensive consideration is that the water side capacity of 12.7 pipe is the best. Under the same water side pipe diameter, the number of coils increases, the heat exchange area increases, but the heat transfer coefficient K decreases (caused by the CO2 side), and the comprehensive consideration is that 4 coils are better than 3 coils.

[0078] Table 3

[0079]

[0080] From Table 3, taking a 3.6mm diameter capillary tube 2 as an example, the depth of the corrugated pipe 1 around the capillary tube 2 needs to reach the radius of the capillary tube 2, which is 1.8mm, to achieve a higher heat exchange coefficient.

[0081] In summary, the heat exchanger 100 provided by the present application fully considers various influencing factors of the water side heat exchanger 100 exchanging heat with water in the integrated heat pump system, and on the basis of being processable and manufacturable, designs the coiled pipe type water heating heat exchanger 100 combined with the corrugated pipe 1 and the capillary tube 2, so that the refrigerant and water heat exchange path is long and the heat exchange efficiency is high. In the 4.2-4.8Kw integrated heat pump system, the diameter of the corrugated pipe 1 is 12-13mm, the capillary tube 2 is 3.2-3.8mm, which can make the performance of the heat pump system reach the best interval, and save energy and protect the environment.

[0082] The heat pump system according to the embodiments of the present application is described below.

[0083] The heat pump system according to the embodiments of the present application comprises the heat exchanger 100 described above.

[0084] According to the heat pump system of the embodiment of the present application, the heat exchanger 100 is set, the corrugated pipe 1 and the capillary pipe 2 are set, the capillary pipe 2 is wound in the spiral groove 11 of the outer circumferential wall of the corrugated pipe 1, the length of the heat exchange path of the flowing medium in the capillary pipe 2 and the corrugated pipe 1 can be increased, the contact area of the capillary pipe 2 and the corrugated pipe 1 can be increased, the heat exchange area of the corrugated pipe 1 and the capillary pipe 2 can be increased, the heat exchange efficiency of the flowing medium in the corrugated pipe 1 and the flowing medium in the capillary pipe 2 can be increased, and thus the heat pump capacity of the heat pump system provided with the heat exchanger 100 can be increased.

[0085] Other configurations and operations of the heat pump system according to the embodiment of the present application are known to those skilled in the art, and will not be described in detail herein. In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0086] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A heat exchanger, characterized by, The heat exchanger comprises: a corrugated pipe, which has helical grooves spirally extending along the length direction of the corrugated pipe on the outer circumferential wall of the corrugated pipe; a capillary pipe, which is wound in the helical grooves of the corrugated pipe.

2. The heat exchanger of claim 1, wherein The outer diameter of the corrugated pipe is D, and D is 12 mm-13 mm; and / or, the outer diameter of the capillary pipe is D1, and D1 is 3.2 mm-3.8 mm; and / or, the pitch of the corrugated pipe is P, and 18 mm≤P≤25 mm is satisfied; and / or, the depth of the helical groove is h, and 1.6 mm≤h≤1.9 mm is satisfied; and / or, the width of the helical groove is C, and 3.5 mm≤C≤4.5 mm is satisfied; and / or, the length of the corrugated pipe is L1, and L1 is 9.5 m-10 m; and / or, the length of the capillary pipe is L2, and L2 is 55 m-65 m; and / or, the gap distance between the capillary pipe and the inner wall of the helical groove is d, and 0.05 mm<d<0.1 mm is satisfied; and / or, the depth of the helical groove is greater than or equal to half of the outer diameter of the capillary pipe.

3. The heat exchanger of claim 1, wherein Along the circumferential direction of the corrugated pipe, the helical grooves are multiple and are arranged at intervals, and the capillary pipes are multiple corresponding to the multiple helical grooves, and the multiple capillary pipes are arranged in parallel.

4. The heat exchanger of claim 3, wherein The number of the capillary pipes is N, and N≥3 is satisfied.

5. The heat exchanger of claim 1, wherein The helical groove and the inner wall of the helical groove are filled with a heat-conducting member.

6. The heat exchanger of claim 5, wherein Along the axial direction of the corrugated pipe, the heat-conducting member is filled between adjacent two capillary pipes.

7. The heat exchanger of claim 6, wherein Along the radial direction of the corrugated pipe, the radial outer end of the heat-conducting member is flush with or exceeds the radial outer end of the capillary pipe.

8. The heat exchanger according to any one of claims 5-7, characterized in that The heat-conducting member is a tin member or a zinc member.

9. The heat exchanger of claim 1, wherein At least one of the two ends of the length direction of the corrugated pipe is connected with a connecting pipe, the connecting pipe is a light pipe, the outer diameter of the connecting pipe is D3, the inner diameter of the corrugated pipe is D4, and D3<D4 is satisfied.

10. The heat exchanger of claim 1, wherein At least one of the corrugated pipe and the capillary pipe is a copper pipe; and / or, the corrugated pipe is arranged in a coil.

11. A heat pump system, characterized by, The heat exchanger comprises the heat exchanger according to any one of claims 1-10.

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