Loop communicating vessel structure and heat exchanger

Abstract

The invention provides a loop communicating vessel structure and a heat exchanger. The loop communicating vessel structure comprises circumferential pipes, annular loops connected end to end are arranged in the circumferential pipes, the number of the circumferential pipes is at least two in the axial direction of the circumferential pipes, the number of the circumferential pipes is at least one in the radial direction of the circumferential pipes, and when the number of the circumferential pipes at the same radial position is not less than two, the annular loops are connected end to end. The diameters of different circumferential pipes at the same radial position are different; one ends of the transverse pipes are fixed and communicated with the inner rings of the circumferential pipes, the other ends of the transverse pipes connected with the same circumferential pipe are converged and communicated, or the other ends of the transverse pipes connected with the same circumferential pipe are fixed and communicated with the outer rings of the adjacent circumferential pipes in the radial direction; the circumferential pipes located at different positions in the axial direction are fixed and communicated through the longitudinal pipes. Therefore, the loop communicating vessel has fluid paths in the circumferential direction, the radial direction and the axial direction, is suitable for combination and matching, and can meet more and more complex heat transfer application requirements.

Description

Technical Field

[0001] The present application relates to the field of fluid pipelines, and in particular to a loop communicating vessel structure and a heat exchanger. Background Art

[0002] A fluid pipeline is a pipeline with a hollow cross-section, in which a fluid with a certain temperature can flow, and the fluid can exchange heat with the external medium of the fluid pipeline, so the fluid pipeline has a large number of applications in the fields of heat transfer, heat exchange, and heat dissipation. The fluid pipeline can have a variety of trends and shapes, and the loop structure of some existing fluid pipelines is a single loop or single circuit structure.

[0003] The invention patent with the announcement number "EP2758738B1" discloses "Counterflow Cylindrical Recuperative Heat Exchanger with Multi-threaded SCREW-like Coiled Heat Exchanger Surfaces, Designed for Ventilating Devices". The heat exchanger includes radially arranged medium inlets and medium outlets, and the channels for the flow of the medium are multi-threaded and spirally coiled, and the final overall outer contour is similar to a cylinder. The heat exchanger provides a spirally coiled fluid path for the fluid, but the heat exchange path and heat exchange flow channel need to be further enriched to cope with the increasingly complex heat transfer application requirements. Summary of the invention

[0004] This application is made in view of the above-mentioned state of the prior art. In a first aspect, this application provides a loop connector structure.

[0005] The technical solution adopted in the present application includes: a circumferential tube, wherein the interior of the circumferential tube is provided with an annular loop connected end to end, and along the axial direction of the circumferential tube, the number of the circumferential tubes is at least two, and along the radial direction of the circumferential tube, the number of the circumferential tubes is at least one, and when the number of the circumferential tubes at the same radial position is not less than two, the respective diameters of different circumferential tubes at the same radial position are not equal; a transverse tube, wherein one end of the transverse tube is fixed and connected to the inner ring of the circumferential tube, and the other end of the transverse tube connected to the same circumferential tube converges and is connected, or the other end of the transverse tube connected to the same circumferential tube is fixed and connected to the outer ring of the circumferential tube adjacent in the radial direction; a longitudinal tube, wherein the circumferential tubes at different positions in the axial direction are fixed and connected through the longitudinal tube.

[0006] As a further improvement of the present application, the longitudinal tube includes a straight tube and / or a spiral tube, the straight tube is parallel to the axis of the circumferential tube, and the axis around which the spiral tube is wound coincides with the axis of the circumferential tube.

[0007] As a further improvement of the present application, the spiral directions of several of the spiral tubes are the same, and the numbers of spiral turns of several of the spiral tubes are the same.

[0008] As a further improvement of the present application, a plurality of fins are fixed to the outer wall of the longitudinal tube, and gaps exist between adjacent fins.

[0009] As a further improvement of the present application, an inner axial support tube is arranged at the axis of the circumferential tube, a base block is arranged at the centroid of the circumferential tube, one end of the transverse tube is fixed to the base block, and the inner axial support tube, the base block and the transverse tube are connected in sequence.

[0010] As a further improvement of the present application, the circumferential tube includes an upper annular tube and a lower annular tube which are coaxial with each other and are not in the same radial position, the base block includes an upper base and a lower base, and the transverse tube includes an upper radial tube and a lower radial tube; the two ends of the inner axial support tube are respectively connected to the upper base and the lower base, the two ends of the upper radial tube are respectively connected to the upper base and the upper annular tube, and the two ends of the lower radial tube are respectively connected to the lower base and the lower annular tube; the upper base includes a plurality of first holes, the upper radial tube is connected to the first holes, the upper base has an upper cavity connected to the plurality of first holes, and the top of the inner axial support tube is connected to the upper cavity; the number of the first holes is greater than the number of the upper radial tubes; the lower base includes a plurality of second holes, the lower radial tube is connected to the second holes, and the plurality of second holes are vertically crossed inside the lower base and form a cross connecting cavity, and the bottom end of the inner axial support tube is connected to the cross connecting cavity; the number of the second holes is equal to the number of the lower radial tubes.

[0011] As a further improvement of the present application, an outer axial tube is connected between the upper annular tube and the lower annular tube, and a vertical distance from the outer axial tube to the axis of the circumferential tube is greater than a vertical distance from the longitudinal tube to the axis of the circumferential tube.

[0012] As a further improvement of the present application, the outer axial tube includes an axial section, which is parallel to the axis of the circumferential tube, and the end of the axial section is integrally connected with a first elbow, and the first elbows at both ends of the axial section extend in the same direction and are fixed and connected to the outer ring of the circumferential tube; the upper radial tube includes a radial section, and one end of the radial section is integrally connected with a second elbow, and the second elbow is fixed and connected to the axial end of the upper annular tube away from the lower annular tube; the spiral tube includes a spiral section, and the axis around which the spiral section is rotated coincides with the axis of the circumferential tube, and the two ends of the spiral section are integrally connected with a third elbow, and the direction of the end of the third elbow that contacts the circumferential tube is parallel to the axial direction of the circumferential tube, and the third elbows at both ends of the spiral tube are respectively fixed and connected to the opposite axial ends of the upper annular tube and the lower annular tube.

[0013] As a further improvement of the present application, the material of the circumferential tube, the transverse tube and the longitudinal tube is metal or non-metal, and the metal material is copper, aluminum, stainless steel or carbon steel; the junctions between the circumferential tube, the transverse tube and the longitudinal tube are fixed by welding.

[0014] In a second aspect, a heat exchanger is provided, comprising the above-mentioned loop communicating vessel structure.

[0015] The beneficial effects of the loop communication structure of the present application include: the use of the circumferential tube, the transverse tube, and the longitudinal tube as a whole can form a communication structure similar to a cylindrical frame. First, the circumferential tube, the transverse tube, and the longitudinal tube can be interconnected, which is convenient for the fluid to flow freely inside. The circumferential tube provides an annular loop connected end to end, the transverse tube provides a transverse (radial) fluid path, and the longitudinal tube provides a longitudinal (axial) fluid path. Secondly, at least two circumferential tubes are arranged in the axial direction, which can ensure the basic shape of its cylinder; if there are more than two circumferential tubes in the axial direction, multiple annular loops are formed, which increases the density of the pipeline in the axial direction. Thirdly, the radial direction of the same cross-sectional position can also include multiple circumferential tubes of different diameters, which facilitates their mutual nesting and increases the density of the pipeline in the radial direction. Then a communication structure of a series and parallel combination of the upper and lower axial, inner and outer radial directions is obtained. Finally, the loop communication structure can be applied in heat transfer, heat exchange, and heat dissipation. The loop communicating vessel structure makes full use of the three-dimensional space, greatly lengthens the total length of the fluid path, expands the heat exchange surface area, can provide high density, and complicates the fluid path and fluid loop, thereby meeting the increasingly complex heat transfer application needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 is a perspective view of a first embodiment of the loop communication device structure of the present application;

[0018] Figure 2 It is a front view of a first embodiment of the loop communication device structure of the present application;

[0019] Figure 3 The loop connector structure of this application Figure 2 AA section view;

[0020] Figure 4 The loop connector structure of this application Figure 2 BB cross-sectional view;

[0021] Figure 5 is a top view of a first embodiment of the loop communication vessel structure of the present application;

[0022] Figure 6 is a perspective view of a first embodiment of the loop communication device structure of the present application;

[0023] Figure 7 is a perspective view of a second embodiment of the loop communication vessel structure of the present application;

[0024] Figure 8 The loop connector structure of this application Figure 7 A partial enlarged view of point C;

[0025] Fig. 9 is a perspective view of a third embodiment of the loop connector structure of the present application;

[0026] Fig.10 is a perspective view of a fourth embodiment of the loop connector structure of the present application;

[0027] Fig.11 It is a perspective view of a fifth embodiment of the loop communicating vessel structure of the present application.

[0028] Description of Reference Numerals

[0029] 1-inner axial support tube; 2-outer axial tube; 201-axial section; 202-first elbow; 3-upper annular tube; 4-lower annular tube; 5-upper base; 501-first hole; 502-longitudinal and latitude connecting cavity; 6-lower base; 601-second hole; 602-cross connecting cavity; 7-upper radial tube; 701-radial section; 702-second elbow; 8-lower radial tube; 9-spiral tube; 901-spiral section; 902-third elbow; 10-fin; 11-longitudinal tube; 12-circumferential tube; 13-transverse tube. DETAILED DESCRIPTION

[0030] The exemplary embodiments of the present application are described below with reference to the accompanying drawings. It should be understood that these specific descriptions are only used to teach those skilled in the art how to implement the present application, and are not intended to exhaust all possible methods of the present application, nor to limit the scope of the present application.

[0031] The loop communicating vessel structure and the heat exchanger of the present application are further described in detail below in conjunction with specific embodiments.

[0032] See also Figures 9 to 11 The embodiment of the present application provides a loop communication structure. The loop communication structure may include a circumferential tube 12, a transverse tube 13, and a longitudinal tube 11. The circumferential tube 12, the transverse tube 13, and the longitudinal tube 11 are all hollow tubes. First, the interior of the circumferential tube 12 has a connected annular loop. Along the axial direction of the circumferential tube 12, the number of the circumferential tubes 12 is at least two, such as Fig. 9 The CCP has two circumferential tubes 12, such as Fig.10 As shown, there can be four circumferential tubes 12, and they are all coaxially arranged. Along the radial direction of the circumferential tube 12, the number of the circumferential tube 12 is at least one, such as Fig.11 As shown, the number of circumferential tubes 12 at the same radial position (i.e., the same transverse position) is two, and the diameters of the circumferential tubes 12 at the same radial position (here, the diameter of the circle surrounded by the circumferential tubes) are different. Then, one end of the transverse tube 13 is fixed to and connected with the inner circle of the circumferential tube 12, and the other ends of the transverse tubes 13 connected to the same circumferential tube 12 converge and communicate, as shown in FIG. Fig. 9 , Fig.10 As shown in FIG. 11 , one end of the transverse tubes 13 connected to the same circumferential tube 12 are all connected together. Or the other end of the transverse tube 13 connected to the same circumferential tube 12 is fixed and connected to the outer ring of the radially adjacent circumferential tube 12. As shown in FIG. 11 , the transverse tube 13 connected to the circumferential tube 12 with a relatively large diameter (circumferential tube of the outer ring) is connected to the circumferential tube 12 with a relatively small diameter (circumferential tube of the inner ring). Finally, the circumferential tubes 12 at different positions in the axial direction are connected through the longitudinal tube 11. The circumferential tube 12, the transverse tube 13, and the longitudinal tube 11 are all connected to each other, thus forming a complex communicating vessel together.

[0033] like Fig. 9 As shown, in the axial direction, there are two circumferential tubes 12, and the diameters of the circumferential tubes 1 connected to the same longitudinal tube 11 can be equal. The two circumferential tubes 12 mean that the fluid has two annular circuits. Fig.10 As shown, the more the number of circumferential tubes 12 is, the more annular circuits there are. The longitudinal tube 11 is responsible for connecting all the circumferential tubes 12 to each other, thus forming a series effect of the fluid.

[0034] like Fig.11 As shown, in the same radial direction, there are two circumferential tubes 12, and they are two circumferential tubes 12 with different diameters. The centers of the circumferential tubes 12 with different diameters in the same radial direction may coincide. The two circumferential tubes 12 with different diameters also mean that the fluid has two annular loops, and the transverse tube 13 is responsible for connecting the circumferential tubes 12 with different diameters to each other, thereby forming a parallel effect of the fluid.

[0035] Fig. 9 It can represent a loop communication unit, and various combinations of inside and outside, top and bottom can be formed based on this loop communication unit to form a unified multi-element heat transfer system. In this way, a series of application adaptability issues such as the axial height of the overall loop communication structure (i.e., the axial distance between the circumferential tubes 12 at the two ends), the outer diameter (i.e., the diameter of the circumferential tubes 12 in the outermost circle), and the internal and external nesting density (i.e., how many circumferential tubes 12 of different diameters are nested inside and outside, the more nesting means the denser, and the less nesting means the sparser), can be changed. Figures 9 to 11 Combining or expanding on the basis of the technical ideas expressed, the final result is a communicating vessel structure that is connected in series or in parallel in the upper and lower axial directions and in the inner and outer radial directions. Its overall outline is similar to a cylinder, and the cylinder has flow channels in the axial, radial, and circumferential directions, and the three can be interconnected to form a complex loop. In this way, according to needs, fluids can be introduced for high-speed, orderly, and directional flow and heat exchange, or low-speed, disordered diffusion-type flow and heat exchange can be carried out. In short, by making full use of pipelines with different spatial directions and spatial positions, and by using the combination mode from line to surface to body, the three-dimensional space is fully utilized, which greatly expands the heat exchange surface area and enriches and complicates the route of the flow channel.

[0036] In one embodiment, the longitudinal tube 11 comprises a straight tube or a spiral tube 9, such as Figures 9 to 11 , Figure 1 , Figure 2 As shown, the extension direction of the straight tube is parallel to the axis of the circumferential tube 12. The straight tube or the spiral tube 9 can be connected in a loop. Figure 1 As shown, compared with a straight tube, the actual length of the spiral tube 9 is extended, so that the fluid in the spiral tube 9 needs more time to pass through, thereby bringing about a better heat exchange effect.

[0037] like Figure 1As shown, in one embodiment, the spiral directions of the spiral tubes 9 can be the same, and the number of spiral turns (i.e., the degree of the spiral angle) of the spiral tubes 9 is also the same, that is, the pitch, number of revolutions, axis around, and spiral direction of different spiral tubes 9 are the same, and only the starting point positions are different. In this way, adjacent spiral tubes 9 are prevented from interfering with each other.

[0038] like Figure 8 As shown, in one embodiment, a plurality of fins 10 are fixed to the outer wall of the longitudinal tube 11, and there are gaps between adjacent fins 10. The fins 10 do not damage the sealing of the longitudinal tube 11, and the fins 10 are not connected to the inner wall of the longitudinal tube 11. Figure 7 , Figure 8 As shown, the fins 10 may extend in the transverse direction (radial direction) of the longitudinal tube 11, and adjacent fins 10 may be arranged at equal intervals. The fins 10 improve the heat exchange efficiency between the inside and outside of the longitudinal tube 11 by increasing the surface area.

[0039] like Figure 1 , Figure 6 As shown, in one embodiment, an inner axial support tube 1 is provided at the axis of the circumferential tube 12, a base block is provided at the centroid of the circumferential tube 12, a transverse tube 13 is fixed to the base block, and the inner axial support tube 1, the base block, and the transverse tube 13 are sequentially connected. The inner axial support tube 1 provides another fluid route in the longitudinal direction, and the fluid can form a loop along the inner axial support tube 1, one circumferential tube 12, the longitudinal tube 11, and another circumferential tube 12.

[0040] The inner diameter of the inner axial support tube 1 may be larger than the inner diameters of the transverse tube 13 and the longitudinal tube 11. The inner diameter of the circumferential tube 12 itself may also be larger than the inner diameters of the transverse tube 13 and the longitudinal tube 11.

[0041] like Figure 1 , Figure 6 As shown, in one embodiment, the circumferential tube 12 includes an upper annular tube 3 and a lower annular tube 4 which are coaxial with each other, the base block includes an upper base 5 and a lower base 6, and the transverse tube includes an upper radial tube 7 and a lower radial tube 8. The two ends of the inner axial support tube 1 are respectively connected to the upper base 5 and the lower base 6, the two ends of the upper radial tube 7 are respectively connected to the upper base 5 and the upper annular tube 3, and the two ends of the lower radial tube 8 are respectively connected to the lower base 6 and the lower annular tube 4.

[0042] like Figure 3 , Figure 8As shown, the upper base 5 includes a plurality of first holes 501, the upper radial tube 7 is connected to the first holes 501, and the upper base 5 has an upper cavity inside, and the upper cavity is connected to the plurality of first holes 501. The shape of the cavity surrounded by the upper cavity can be various, and the processing form of the upper cavity can also be various. In a non-limiting example, the upper cavity can be a longitude and latitude connecting cavity 502. A plurality of first holes 501 are intersected at an angle inside the upper base 5 to form a longitude and latitude connecting cavity 502, which is equivalent to being naturally formed when processing the first holes 501. The top end of the inner axial support tube 1 is connected to the longitude and latitude connecting cavity 502. The number of first holes 501 is greater than the number of upper radial tubes 7. For example, the number of upper radial tubes 7 can be four, and the number of first holes 501 can be ten.

[0043] like Figure 4 As shown, the lower base 6 includes a plurality of second holes 601, the lower radial tube 8 is connected to the second holes 601, and the plurality of second holes 601 are vertically intersected inside the lower base 6 to form a cross communication cavity 602, and the bottom end of the inner axial support tube 1 is connected to the cross communication cavity 602. The number of the second holes 601 can be equal to the number of the lower radial tubes 8, for example, the number of the second holes 601 and the number of the radial tubes 8 can both be four.

[0044] The upper cavity of the upper base 5 and the cross-connecting cavity 602 of the lower base 6 can both be made of metal blocks processed by CNC machine tools, and the upper base 5 and the lower base 6 are equivalent to the effect of a multi-way pipe joint that converges. Among them, the longitude and latitude connecting cavity 502, which is an optional form of the upper cavity, is equivalent to a group of first holes 501 as blind holes and another group of first holes 501 as blind holes vertically intersecting. The cross-connecting cavity 602 can be four second holes 601 as blind holes docked. In addition, the reason why the number of first holes 501 is greater than the number of upper radial tubes 7 is that those first holes 501 that are not docked by the upper radial tubes 7 can be connected with the external pipelines of external equipment, which is convenient for the loop connector to participate in actual use.

[0045] In one embodiment, if Figure 5 From the axial perspective, the arrangement of the plurality of transverse tubes 13 may form a central symmetrical pattern. The upper radial tube 7 and the lower radial tube 8 may be at an angle to each other and may not overlap.

[0046] like Figure 1 As shown, in one embodiment, an outer axial tube 2 is further connected between the upper annular tube 3 and the lower annular tube 4, and the vertical distance between the outer axial tube 2 and the axis of the circumferential tube 12 is greater than the vertical distance between the longitudinal tube 11 and the axis of the circumferential tube 12. The outer axial tube 2 can also serve as a liquid reflux route.

[0047] like Figure 1As shown, the number of the outer axial tubes 2 can be two, four, etc., and they are arranged in a mirror-symmetrical manner.

[0048] like Figure 8 As shown, in one embodiment, the outer axial tube 2 includes an axial section 201, the axial section 201 is parallel to the axis of the circumferential tube 12, the end of the axial section 201 is integrally connected with a first elbow 202, the first elbows 202 at both ends of the axial section 201 extend in the same direction and are fixed and connected with the outer ring of the circumferential tube 12. The upper radial tube 7 includes a radial section 701, one end of the radial section 701 is integrally connected with a second elbow 702, the second elbow 702 is fixed and connected with the axial end of the upper annular tube 3 away from the lower annular tube 4. The spiral tube 9 includes a spiral section 901, the axis around which the spiral section 901 is arranged coincides with the axis of the circumferential tube 12, the two ends of the spiral section 901 are integrally connected with a third elbow 902, a portion of the third elbow 902 extends in a direction parallel to the axis of the circumferential tube 12, that is, this portion of the third elbow 902 is vertically connected to the upper annular tube 3 or the lower annular tube 4. The third elbows 902 at both ends of the spiral tube 9 are fixed to and communicated with the opposite axial ends of the upper annular tube 3 and the lower annular tube 4 respectively.

[0049] The first elbow 202 is designed to place the main body of the outer axial tube 2 in a radially outer position. Also, because the spiral tubes 9 serving as the longitudinal tubes 11 are arranged densely, the design of the first elbow 202 avoids interference between the outer axial tube 2 and the spiral tubes 9 .

[0050] The second elbow 702 is designed to allow the upper radial tube 7 to be appropriately staggered axially with the connected upper annular tube 3, so that the first hole 501 of the upper base 5 is exposed and the external pipeline is connected to the first hole 501, while not being affected by the interference of the upper annular tube 3.

[0051] The third elbow 902 is designed to be vertically connected to the upper annular tube 3 and the lower annular tube 4 to reduce the difficulty of connection. Otherwise, the two ends of the spiral section 901 of the spiral tube 9 are difficult to connect due to the oblique angle. The fins 10 can be all on the spiral section 901.

[0052] The first elbow 202, the second elbow 702, and the third elbow 902 are all rounded transitions. The first elbow 202 and the second elbow 702 can both change the direction of the fluid path by 90°, while the third elbow 902 changes the direction of the fluid path by an angle within an acute angle range. By respectively refining the end designs of the outer axial tube 2 and the transverse tube 13, it is convenient for the outer axial tube 2, the circumferential tube 12, and the transverse tube 13 in the loop manifold to actually connect with each other, and for the loop manifold to connect with external pipeline equipment.

[0053] In one non-limiting example, see Fig. 9, the positions where the transverse tube 13 and the longitudinal tube 11 are connected to the circumferential tube 12 are misaligned, that is, the positions where the transverse tube 13 and the longitudinal tube 11 are connected to the circumferential tube 12 are at a certain distance along the circumference of the circumferential tube 12. Such misalignment can ensure that the fluid flows fully in the circumferential tube 12, the transverse tube 13, and the longitudinal tube 11, and most of the fluid will not directly cross and connect because two connected parts are close to each other. In this way, it is ensured that the local pipelines of the circumferential tube 12, the transverse tube 13, and the longitudinal tube 11 participate in the flow of the fluid, and there is no phenomenon of too little fluid flow in the local pipeline, and it is not easy to have a long-term high temperature of the fluid in the local pipeline, while the temperature of the fluid in another local pipeline is long-term low, that is, the temperature uniformity can be improved.

[0054] In one embodiment, the circumferential tube 12, the transverse tube 13, and the longitudinal tube 11 are made of metal or non-metal, and the metal may be copper, aluminum, stainless steel, carbon steel, etc. The junctions between the circumferential tube 12, the transverse tube 13, and the longitudinal tube 11 may be fixed by welding, and the outer walls of the junctions between the circumferential tube 12, the transverse tube 13, and the longitudinal tube 11 are also sealed by welding.

[0055] like Figure 6 As shown, in order to facilitate the display of the structure, Figure 6 compared to Figure 1 , Figure 6 The spiral tube 9 is hidden. A through hole may be punched in advance on the circumferential tube 12 to facilitate the through hole to dock and communicate with the longitudinal tube 11.

[0056] The upper base 5 and the lower base 6 are welded and connected by a vertical inner axial support tube 1. Fig.10 As shown, if multiple circumferential tubes 12 are to be arranged axially, the number of base blocks is also large. Fig.10 In the case shown in the figure, an inner axial support tube 1 can also be provided. Fig.10 In this case, the additional inner axial support tube 1 needs to have a plurality of holes penetrating the inner wall and the outer wall of the inner axial support tube 1 so that it can be connected with all the base blocks.

[0057] like Fig.11 As shown, if a radially nested structure is required, loop communication units of different diameters can be made first, that is, the diameters of different loop communication units are different, and each loop communication unit has only one circumferential tube 12 at one end. The loop communication unit can be divided into a relatively small diameter structure and a relatively large diameter structure according to the diameter. Then the relatively small diameter structure is placed in the relatively large diameter structure, and the circumferential tube 12 at the same end is radially connected through the transverse tube 13, and finally a loop communication with two layers inside and outside or even multiple layers inside and outside is formed.

[0058] In a non-limiting example, if the loop connector needs to be connected to a heat exchange substrate, it can be connected to the circumferential tubes 12 at the two ends of the loop connector according to actual needs, or it can be connected at any other position.

[0059] On the other hand, the present application also provides a heat exchanger, which adopts the above-mentioned loop communicating vessel structure.

[0060] The above embodiments are only for illustrating the technical concept and features of the present application, and their purpose is to enable people familiar with this technology to understand the content of the present application and implement it. They cannot be used to limit the scope of protection of the present application. All equivalent changes or modifications made according to the spirit of the present application should be included in the scope of protection of the present application.

Claims

1. A loop connecting device structure, characterized in that: include: A circumferential tube (12), wherein the circumferential tube (12) has an annular loop connected end to end, along the axial direction of the circumferential tube (12), the number of the circumferential tube (12) is at least two, and along the radial direction of the circumferential tube (12), the number of the circumferential tube (12) is at least one, and when the number of the circumferential tubes (12) at the same radial position is not less than two, the diameters of different circumferential tubes (12) at the same radial position are not equal; A transverse tube (13), one end of which is fixed to and connected with the inner ring of the circumferential tube (12), and the other end of the transverse tube (13) connected to the same circumferential tube (12) converges and is connected, or the other end of the transverse tube (13) connected to the same circumferential tube (12) is fixed to and connected with the outer ring of the circumferential tube (12) adjacent in the radial direction; The longitudinal tube (11) is used to fix and communicate the circumferential tubes (12) at different positions in the axial direction.

2. The loop connector structure according to claim 1, characterized in that: The longitudinal tube (11) comprises a straight tube and / or a spiral tube (9), wherein the straight tube is parallel to the axis of the circumferential tube (12), and the axis around which the spiral tube (9) rotates coincides with the axis of the circumferential tube (12).

3. The loop connecting vessel structure according to claim 2, characterized in that: The spiral directions of the plurality of spiral tubes (9) are the same, and the number of spiral turns of the plurality of spiral tubes (9) is the same.

4. The loop connecting vessel structure according to claim 1, characterized in that: A plurality of fins (10) are fixed to the outer wall of the longitudinal tube (11), and gaps exist between adjacent fins (10).

5. The loop connecting vessel structure according to claim 2, characterized in that: An inner axial support tube (1) is arranged at the axis of the circumferential tube (12), a base block is arranged at the centroid of the circumferential tube (12), one end of the transverse tube (13) is fixed to the base block, and the inner axial support tube (1), the base block and the transverse tube are connected in sequence.

6. The loop connecting vessel structure according to claim 5, characterized in that: The circumferential tube (12) comprises an upper annular tube (3) and a lower annular tube (4) which are coaxial with each other and not in the same radial position; the base block comprises an upper base (5) and a lower base (6); and the transverse tube comprises an upper radial tube (7) and a lower radial tube (8); The two ends of the inner axial support tube (1) are respectively connected to the upper base (5) and the lower base (6); the two ends of the upper radial tube (7) are respectively connected to the upper base (5) and the upper annular tube (3); and the two ends of the lower radial tube (8) are respectively connected to the lower base (6) and the lower annular tube (4); The upper base (5) comprises a plurality of first holes (501), the upper radial tube (7) is connected to the first holes (501), the upper base (5) has an upper cavity inside that is connected to the plurality of first holes (501), and the top end of the inner axial support tube (1) is connected to the upper cavity; The number of the first holes (501) is greater than the number of the upper radial tubes (7); The lower base (6) comprises a plurality of second holes (601), the lower radial tube (8) is connected to the second holes (601), the plurality of second holes (601) are vertically intersected inside the lower base (6) and form a cross-connecting cavity (602), and the bottom end of the inner axial support tube (1) is connected to the cross-connecting cavity (602); The number of the second holes (601) is equal to the number of the lower radial tubes (8).

7. The loop connecting vessel structure according to claim 6, characterized in that: An outer axial tube (2) is also connected between the upper annular tube (3) and the lower annular tube (4), and the vertical distance from the outer axial tube (2) to the axis of the circumferential tube (12) is greater than the vertical distance from the longitudinal tube (11) to the axis of the circumferential tube (12).

8. The loop connecting vessel structure according to claim 7, characterized in that: The outer axial tube (2) comprises an axial section (201), the axial section (201) is parallel to the axis of the circumferential tube (12), the end of the axial section (201) is integrally connected with a first elbow (202), the first elbows (202) at both ends of the axial section (201) extend in the same direction and are fixed to and communicated with the outer ring of the circumferential tube (12); The upper radial tube (7) comprises a radial section (701), one end of the radial section (701) is integrally connected with a second elbow (702), and the second elbow (702) is fixed to and communicated with the axial end of the upper annular tube (3) away from the lower annular tube (4); The spiral tube (9) comprises a spiral section (901), the axis around which the spiral section (901) rotates coincides with the axis of the circumferential tube (12), and the two ends of the spiral section (901) are integrally connected with a third elbow (902), and the direction of one end of the third elbow (902) that contacts the circumferential tube (12) is parallel to the axial direction of the circumferential tube (12), and the third elbows (902) at the two ends of the spiral tube (9) are respectively fixed to and connected with the opposite axial ends of the upper annular tube (3) and the lower annular tube (4).

9. The loop connector structure according to any one of claims 1 to 8, characterized in that: The circumferential tube (12), the transverse tube (13), and the longitudinal tube (11) are made of metal or non-metal, and the metal is copper, aluminum, stainless steel, or carbon steel; The intersections between the circumferential tube (12), the transverse tube (13) and the longitudinal tube (11) are fixed by welding.

10. A heat exchanger, characterized in that: A loop connecting vessel structure comprising any one of claims 1 to 9.

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