CN219640225U - Coil pipe structure, heat exchange assembly and heat exchanger - Google Patents

Abstract

The utility model relates to a coil pipe structure and a heat exchange assembly; the coil pipe structure comprises a plurality of first elbows and a plurality of pipe fittings with different lengths, the pipe fittings are connected end to end, and the axial lengths of the pipe fittings are gradually increased from top to bottom; the utility model can make low-temperature low-pressure liquid enter the coil pipe structure through the pipe fitting with longer lower side, discharge the steam generated by vaporization through the pipe fitting with shorter upper side after heat exchange, because the longer the axial length of the pipe fitting near the lower side is, can guarantee that the longer pipe fitting that is located in the lower region of the coil pipe structure can hold more liquid, thus raise the heat exchange efficiency, and because the shorter the axial length of the pipe fitting near the upper side is, the steam generated by vaporization can discharge as soon as possible through the shorter pipe fitting located in the upper region of the coil pipe structure, reduce the influence of pressure drop on steam output effect, namely, through rationally optimizing the lengths of a plurality of pipe fittings, make the coil pipe structure can guarantee heat exchange efficiency, can raise steam output effect.

Description

Coil pipe structure, heat exchange assembly and heat exchanger

Technical Field

The utility model relates to the technical field of heat exchange assemblies, in particular to a coil pipe structure and a heat exchange assembly.

Background

Most of the prior heat exchangers are provided with heat exchange pipes with serpentine coil structures, however, most of the prior heat exchangers are reserved with a section of pipe pass to ensure the supercooling degree or the superheat degree in the heat exchange process, but the reserved pipe pass can cause more overall consumable materials of the heat exchanger, so that the cost is higher; in addition, because the fluid can have energy loss along with the tube side length when flowing in the heat exchanger, the pressure drop further occurs to influence the flow speed, and then the heat exchange effect is influenced, and how to reduce the cost and the pressure drop of the heat exchanger and improve the heat exchange effect is a technical problem to be improved under the condition of meeting the heat exchange requirement of the heat exchanger.

Disclosure of Invention

In view of the foregoing, it is desirable to provide a coil structure, a heat exchange assembly, and a heat exchanger.

A coil pipe structure, a plurality of first elbows and a plurality of pipe fitting of different length, every the pipe fitting includes second elbow and two second body, two second body pass through second elbow intercommunication, the length of two second body is unanimous, a plurality of the pipe fitting sets up side by side and with a plurality of first elbow end to end, and a plurality of the axial length of pipe fitting from top to bottom progressively increases gradually.

According to the coil pipe structure, low-temperature low-pressure liquid can enter the coil pipe structure through the pipe fitting with the longer lower side, steam generated by vaporization is discharged through the pipe fitting with the shorter upper side after heat exchange, and as the axial length of the pipe fitting which is closer to the lower side is longer, the lower area of the coil pipe structure can be ensured to contain more liquid, so that the heat exchange efficiency is improved, the heat exchange effect is ensured without increasing a pipe side, the material consumption is reduced, and the cost is reduced; in addition, the axial length of the pipe fitting which is closer to the upper side is shorter, so that steam generated by vaporization can be discharged as soon as possible, and the influence of pressure drop on the steam output effect is reduced.

In one embodiment, the number of the first elbows is consistent with the number of the pipe fittings, the coil pipe structure further comprises a first pipe body, the first pipe body is arranged in parallel with the pipe fittings, the first pipe body is arranged on the lower sides of the pipe fittings and communicated with the pipe fittings through the first elbows, and the axial lengths of the pipe fittings and the first pipe body are gradually increased from top to bottom in an arithmetic progression mode.

In the embodiment, the axial lengths of the plurality of pipes can be determined in an arithmetic progression mode, so that mass production is facilitated.

In one embodiment, the relationship of the arithmetic series is:

wherein d is the arithmetic array spacing; a is an experience coefficient; lmax is the length of the first pipe body; lmin is the shortest length of the tube; ρ is the density of the flowing refrigerant; h is the height of the second pipe body; di is the hydraulic diameter of the second tubular body; b is a refrigerant conversion coefficient; qi is the mass circulation flow of the air conditioning unit.

In the above embodiment, the length of each pipe may be determined by calculation so as to perform the production process.

The heat exchange assembly comprises a fin assembly and the coil pipe structure, wherein a plurality of fin assemblies are arranged on the coil pipe structure at intervals along the axial direction of the pipe fitting.

The heat exchange assembly can exchange heat through the fin assembly auxiliary coil pipe structure.

In one embodiment, the coiled pipe structure comprises a first pipe body and/or a second pipe body, and the first pipe body and/or the second pipe body are/is flat pipes;

be equipped with a plurality of fin holes on the fin subassembly, follow the width direction of fin subassembly, the fin hole certainly the first side of fin subassembly inwards is sunken to form, follows the length direction of fin subassembly, equidistant interval setting in fin hole, the fin subassembly passes through the fin hole is inserted and is located on the flat pipe.

In the above embodiments, the fin assembly can assist the coil structure in heat exchange and enhance the structural stability between the plurality of tubes.

In one embodiment, the fin assembly further comprises a turbulence port in communication with the fin aperture in the case of the fin assembly;

the two bending surfaces forming the turbulence port are arranged at intervals and are respectively connected with the first side surface, the bending surfaces comprise a first turbulence surface, a second turbulence surface and a third turbulence surface, the second turbulence surface is connected with the first turbulence surface and the third turbulence surface, the first turbulence surface is connected with the first side surface, an included angle between the first turbulence surface and the first side surface is an obtuse angle, and the third turbulence surface is parallel to the first turbulence surface.

In the above embodiments, the heat exchange is performed to the coil structure by the spoiler opening auxiliary fin assembly.

In one embodiment, the coiled pipe structure comprises a first pipe body and/or a second pipe body, and the first pipe body and/or the second pipe body are/is flat pipes;

the fin assembly comprises a plurality of fin units, each fin unit comprises a fin hole, and the fin units are respectively inserted into the first pipe body and the pipe fittings through the fin holes.

In the above embodiment, heat exchange may be performed by the fin unit auxiliary tube member.

In one embodiment, the fin units on two adjacent second tube bodies are staggered with each other, and the fin units on the first tube body and the second tube body are staggered with each other.

In the above embodiment, the drainage effect can be ensured by the fin units which are alternately arranged.

The heat exchanger comprises a fixing assembly, a first header, a second header and the heat exchange assemblies, wherein the heat exchange assemblies are arranged in a plurality, the heat exchange assemblies are arranged side by side at intervals, the two axial sides of the heat exchange assemblies are respectively penetrated on the fixing assembly, and the first header is communicated with the second header through a plurality of coil pipe structures of the heat exchange assemblies.

In the above embodiment, the heat exchanging effect of the heat exchanger is enhanced by increasing the number of heat exchanging members, and the fixation between the plurality of coil structures is achieved by the fixing members.

In one embodiment, there is a gap between two adjacent heat exchange assemblies.

In the above embodiment, by making no bonding portion between two adjacent heat exchange assemblies, the heat exchange assemblies can be ensured to have a good heat exchange effect.

In one embodiment, the fixing assembly comprises a first fixing unit and a second fixing unit, and two axial sides of the pipe fitting penetrate through the first fixing unit and the second fixing unit respectively.

In the above embodiment, the first fixing unit and the second fixing unit may be used to reinforce two axial sides of the coil structure, so as to enhance structural stability of the heat exchange assembly.

In one embodiment, the second fixing unit is composed of a plurality of first fixing pieces and second fixing pieces which are connected end to end, the pipe fitting penetrates through the first fixing pieces, and the bottom surface of the second fixing pieces is in butt joint with the top surface of the fin assembly.

In the above embodiment, the second fixing member may be used to connect two adjacent first fixing members, so as to assist the first fixing members to enhance the structural stability between the plurality of tubes, and the bottom surface of the second fixing member abuts against the top surface of the fin assembly, so that the structural stability between the second fixing unit and the heat exchange assembly may be further ensured.

Drawings

FIG. 1 is a schematic diagram of a coil structure according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a heat exchange assembly according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a heat exchange assembly according to another embodiment of the present utility model;

FIG. 4 is a schematic view of a partial structure of a fin assembly according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a partial structure of a fin assembly according to another embodiment of the present utility model;

FIG. 6 is an enlarged view of part A of FIG. 5;

FIG. 7 is a schematic view of a heat exchanger according to an embodiment of the present utility model;

fig. 8 is a schematic view of a heat exchanger according to another embodiment of the present utility model.

Reference numerals:

1. a first elbow;

2. a pipe fitting; 201. a second elbow; 202. a second tube body; 21. an input port; 22. an output port; 23. a first flat tube set; 24. a second flat tube group; 25. a third flat tube group; 26. a fourth flat tube group;

3. a fin assembly; 31. a first side; 32. fin holes; 33. a disturbance flow port; 331. a bending surface; 332. a first flow disruption surface; 333. a second flow disruption surface; 334. a third flow disruption surface; 34. a first fin plate group; 35. a second fin plate group; 36. a third fin plate group; 37. a fourth fin plate group; 38. a fifth fin plate group; 39. a fin unit;

4. a fixing assembly; 41. a first fixing unit; 42. a second fixing unit; 421. a first fixing member; 422. a second fixing member;

5. a first header;

6. a second header;

7. a first tube body.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1, an embodiment of the present utility model provides a coiled pipe structure, which includes a plurality of first elbows 1 and a plurality of pipe members 2 with different lengths, wherein the pipe members 2 are arranged in parallel and connected end to end with the first elbows 1, and the axial lengths of the pipe members 2 are gradually increased from top to bottom.

When the coiled pipe structure is specifically arranged, the coiled pipe structure is a serpentine coiled pipe structure, which is formed by connecting a plurality of first elbows 1 and a plurality of pipe fittings 2 with different lengths end to end, wherein the first elbows 1 are mutually spaced and arranged in parallel, and the pipe fittings 2 are mutually spaced and arranged in parallel. In the description of the utility model, "several" means at least two, for example two, three, etc.

The quantity of first elbow 1 is unanimous with the quantity of pipe fitting 2, and coil pipe structure still includes first body 7, and first body 7 sets up side by side with pipe fitting 2 to communicate with pipe fitting 2 through first elbow 1, the axial length of first body 7 is greater than the axial length of pipe fitting 2.

Each pipe fitting 2 comprises a second elbow 201 and two second pipe bodies 202, wherein the two second pipe bodies 202 are communicated through the second elbow 201, and the lengths of the two second pipe bodies 202 are consistent. Wherein, the second tube 202 is a flat tube, and the heat exchange effect can be improved by the micro-channel in the flat tube. The first elbow 1 and the second elbow 201 are respectively elbows, so that the first elbow 1 and the second elbow 201 can be communicated with the second pipe 202.

Illustratively, in an embodiment of the present utility model, the coil structure has a first flat tube set 23, a second flat tube set 24, a third flat tube set 25, a fourth flat tube set 26, and a first tube body 7 that are progressively longer from top to bottom. That is, the plurality of tube members 2 in the coil structure includes a first flat tube group 23, a second flat tube group 24, a third flat tube group 25, and a fourth flat tube group 26. The first flat tube group 23 is communicated with the second flat tube group 24 through a first elbow 1, the second flat tube group 24 is communicated with the third flat tube group 25 through a first elbow 1, the third flat tube group 25 is communicated with the fourth flat tube group 26 through a first elbow 1, and the fourth flat tube group 26 is communicated with the first tube body 7 through a first elbow 1. The first flat tube group 23 has two first flat tubes parallel to each other, which are communicated through a second elbow 201. The second flat tube group 24 has two second flat tubes parallel to each other and identical in length, and the two second flat tubes are communicated through a second elbow 201. The third flat tube group 25 has two third flat tubes parallel to each other and identical in length, and the two third flat tubes are communicated through one second elbow 201. The fourth flat tube group 26 has two fourth flat tubes parallel to each other and identical in length, and the two fourth flat tubes are communicated through one second elbow 201.

The coil structure of the present utility model, when used as an evaporator fitting, allows the first tube 7 to communicate with the tube 2 at the lowest position of the coil structure, and the tube 2 at the uppermost position of the coil structure is provided with an output port 22, and the first tube 7 is provided with an input port 21. The low-temperature low-pressure liquid enters the pipe fitting 2 with the longer lower side through the first pipe body 7, is vaporized into steam through heat exchange, and is discharged through the pipe fitting 2 with the shorter upper side.

When the coil pipe structure is used, low-temperature low-pressure liquid can be conveyed into the first pipe body 7 and the pipe fitting 2 with the longer lower side, and steam generated by vaporization is discharged through the pipe fitting 2 with the shorter upper side after heat exchange. The lower the position is, the longer the axial length of the pipe fitting 2 is, so that the first pipe body 7 positioned in the lower area of the coil pipe structure and the pipe fitting 2 can hold more liquid, the heat exchange efficiency is improved, the heat exchange effect is ensured without increasing a pipe side, the material consumption is reduced, and the cost is reduced; furthermore, since the axial length of the pipe 2 located closer to the upper side is shorter, steam generated by vaporization can be discharged as soon as possible through the shorter pipe 2 located in the upper region of the coil structure, reducing the influence of pressure drop on the steam output effect.

When the coil pipe structure is produced, the pipe fitting 2 positioned at the lower side can be made long, and the pipe fitting 2 positioned at the upper side can be made short. Compared with the serpentine coil pipe with the same length of the pipe fitting 2 at present, the coil pipe structure can ensure heat exchange efficiency and improve steam output effect by reasonably optimizing the lengths of a plurality of pipe fittings 2 under the condition that the used materials are consistent.

In one embodiment, the first pipe body 7 is disposed at the lower side of the plurality of pipe elements 2, and the axial lengths of the plurality of pipe elements 2 and the first pipe body 7 are gradually increased from top to bottom in an equal-differential sequence. The number of the sections which are increased section by section is the number of the pipe fittings 2. The axial length of the plurality of pipe fittings 2 can be determined in an arithmetic series mode, and mass production is convenient.

When the coiled pipe structure is produced, the number of the pipe fittings 2 and the length of the first pipe body 7 can be determined according to the size requirement of the coiled pipe structure, but the shortest length of the pipe fittings 2 and the length of the middle pipe fittings 2 need to be calculated.

Specifically, the axial length difference of two adjacent pipe fittings 2 has a constraint relation of an arithmetic series, and the corresponding arithmetic series relation is:

wherein d is the arithmetic array spacing; a is an experience coefficient; lmax is the length of the first pipe body (determined according to the actual installation space); lmin is the shortest length of the pipe fitting 2 (the value range is 100-500); ρ is the density of the flowing refrigerant; h is the height of the second tube 202; di is the hydraulic diameter of the second tubular body 202; b is a refrigerant conversion coefficient (the value range is 50-1000); qi is the mass circulation flow of the air conditioning unit.

The calculation formula of the hydraulic diameter di is:

di＝4C/P，

where C is the flow cross-sectional area and P is the perimeter.

The specific value of the refrigerant conversion coefficient B may be determined according to the type of the flowing refrigerant. Taking the pure high-pressure refrigerant R32 as an example, when R32 is selected as the circulating refrigerant, the value of a is 1000, and the value of B is 1000 (B is not simply understood as density).

When the arithmetic difference array pitch d is calculated based on the arithmetic difference array relational expression, the shortest length Lmin of the pipe 2 is assumed, and thus the arithmetic difference array pitch d is also assumed.

At this time, the following equation may be used: an=a1+ (n-1) d, where an is the length Lmax of the first pipe body (determined according to the actual installation space), a1 is the shortest length of the pipe fitting 2, and n is the number of sections (the number of pipe fittings 2) that increases section by section.

That is, the assumed values of the first-obtained arithmetic progression interval d are sequentially substituted into the formula: a1 Calculation in =an- (n-1) d gives the assumed value of a 1.

Comparing the assumed value of a1 with the assumed value of Lmin, and determining whether the difference between the assumed value of a1 and the assumed value of Lmin is smaller than 10.

When the difference between the corresponding two values is smaller than 10, the intermediate value of the two values can be taken to obtain the finally determined shortest length value of the pipe fitting 2, and the arithmetic series spacing d is finally determined according to the shortest length value of the pipe fitting 2. And when the difference between the corresponding two values is greater than 10, selecting the assumed value of Lmin again, and performing iterative calculation.

Referring to fig. 2, the embodiment of the present utility model further provides a heat exchange assembly including the fin assembly 3 and the coil structure described above, and the fin assembly 3 is disposed on the coil structure.

In particular, the coil structure has several tubes 2 of different lengths, and the fin assembly 3 is provided on several tubes 2. The heat exchange is assisted by the fin assembly 3.

When the heat exchange assembly is used as an evaporator, low-temperature low-pressure liquid can enter the coil pipe structure through the pipe fitting 2 with the longer lower side, the heat exchange efficiency can be improved through the fin assembly 3 in the heat exchange process, and steam generated after heat exchange can be discharged through the pipe fitting 2 with the shorter upper side. Through the reasonable optimization of the lengths of the pipe fittings 2 in the coil pipe structure, the heat exchange assembly can improve the heat exchange efficiency and the steam output effect.

In addition, when the heat exchange assembly is used as a condenser, high-temperature and high-pressure gas can enter the coil pipe structure through the pipe fitting 2 with the shorter upper side for heat exchange, the fin assembly 3 can be used for improving the heat exchange efficiency in the heat exchange process, and condensed liquid generated after heat exchange can be discharged through the pipe fitting 2 with the longer lower side. By the coil pipe structure that the length of the pipe fitting 2 increases gradually, condensation liquid generated by heat exchange can flow into the pipe fitting 2 at the lowest side as soon as possible, and then is discharged.

In one embodiment, a plurality of fin assemblies 3 are provided, and a plurality of fin assemblies 3 are disposed on the tube member 2 in the axial direction of the coil structure. The auxiliary heat exchange effect of the fin assemblies 3 on the coil structure is enhanced by increasing the number of the fin assemblies 3.

Specifically, the fin components 3 are of a straight plate structure, the fin components 3 are inserted into the first pipe body 7 and the pipe fittings 2, and the intervals between two adjacent fin components 3 are consistent. More specifically, the fin assembly 3 has a first side 31 perpendicular to the axial direction of the tube 2, and the first side 31 of the fin assembly 3 is provided with a plurality of fin holes 32, and the tube 2 is inserted into the fin holes 32. The fin assemblies 3 and the pipe fittings 2 can be connected in an inserting mode, and each fin assembly 3 can be connected with a plurality of pipe fittings 2 at the same time.

In one embodiment, the coiled tube structure comprises a first tube body and/or a second tube body, and the first tube body and/or the second tube body are/is flat tubes. Be equipped with a plurality of fin holes 32 on the fin subassembly 3, along the width direction of fin subassembly 3, fin hole 32 inwards sunken formation from the first side 31 of fin subassembly 3, along the length direction of fin subassembly 3, fin hole 32 equidistant interval sets up, and fin subassembly 3 passes through fin hole 32 and inserts to locate on the flat pipe. That is, the first tube body 7 and the plurality of tube members 2 are all provided to pass through the fin assembly 3. The fin assembly 3 not only can assist the coil pipe structure to exchange heat, but also can enhance the structural stability among the plurality of pipe fittings 2.

Referring to fig. 3 and 4, specifically, the fin assembly 3 is provided with a plurality of fin holes 32, and the first tube body 7 and the second tube body 202 respectively penetrate through the fin holes 32. More specifically, the fin assembly 3 has a first side 31 axially perpendicular to the second tube body 202, the fin holes 32 are formed in the first side 31 of the fin assembly 3, and the first tube body 7 and the second tube body 202 are inserted into the fin assembly 3 through different fin holes 32 to complete the connection between the fin assembly 3 and the tube 2. In the present utility model, the second tube 202 may be welded and fixed to the fin assembly 3 by a brazing furnace.

Referring to fig. 5, in one embodiment, the fin assembly 3 further includes a disturbance orifice 33, where the disturbance orifice 33 communicates with the fin hole 32 in the case of the fin assembly 3. The fin assembly 3 has a turbulent flow effect through the turbulent flow port 33 to enhance the heat exchange effect.

Specifically, referring to fig. 6, the flow-disturbing mouth 33 has two bending surfaces 331, and the two bending surfaces 331 forming the flow-disturbing mouth 33 are spaced apart and connected to the first side 31 respectively.

More specifically, the curved surface 331 includes a first flow disturbing surface 332, a second flow disturbing surface 333, and a third flow disturbing surface 334, two ends of the second flow disturbing surface 333 are connected to the first flow disturbing surface 332 and the third flow disturbing surface 334, respectively, and the second flow disturbing surface 333 is perpendicular to the first side surface 31. The first flow disturbing surface 332 is connected to the first side surface 31, and an included angle between the first flow disturbing surface 332 and the first side surface 31 is an obtuse angle. The third flow-disturbing surface 334 is connected to the connection surface, and the third flow-disturbing surface 334 is parallel to the first flow-disturbing surface 332.

Referring to fig. 3, in one embodiment of the application, the fin assembly 3 has a first fin plate group 34, a second fin plate group 35, a third fin plate group 36, a fourth fin plate group 37 and a fifth fin plate group 38 which decrease in height from left to right, and the coil structure has a first flat tube group 23, a second flat tube group 24, a third flat tube group 25, a fourth flat tube group 26 and a first tube body 7 which increase in length from top to bottom. The first fin plate group 34 is inserted in the first flat tube group 23, the second flat tube group 24, the third flat tube group 25, the fourth flat tube group 26 and the first tube body 7, the second fin plate group 35 is inserted in the second flat tube group 24, the third flat tube group 25, the fourth flat tube group 26 and the first tube body 7, the third fin plate group 36 is inserted in the third flat tube group 25, the fourth flat tube group 26 and the first tube body 7, the fourth fin plate group 37 is inserted in the fourth flat tube group 26 and the first tube body 7, and the fifth fin plate group 38 is inserted in the first tube body 7. The first flat tube group 23 has two first flat tubes parallel to each other, the second flat tube group 24 has two second flat tubes parallel to each other and identical in length, the third flat tube group 25 has two third flat tubes parallel to each other and identical in length, and the fourth flat tube group 26 has two fourth flat tubes parallel to each other and identical in length. The structure ensures that the first fin plate group 34, the second fin plate group 35, the third fin plate group 36 and the fourth fin plate group 37 can fix a plurality of pipe fittings 2 with different lengths at the same time, thereby facilitating the assembly between the fin assembly 3 and the coil pipe structure.

Referring to fig. 7 and 8, in another embodiment of the present utility model, the coiled structure includes a first tube and/or a second tube, where the first tube and/or the second tube are flat tubes. The fin assembly 3 comprises a plurality of fin units 39, each fin unit comprises a fin hole, the fin units 39 are respectively inserted on the first pipe body 7 and the pipe fittings 2 through the fin holes, and the first pipe body 7 and the pipe fittings 2 are respectively abutted with the top surface or the bottom surface of the fin unit 39. The fin unit 39 can assist the pipe fitting 2 in heat exchange, and the top surface and the bottom surface of the fin unit 39 are respectively abutted against the two adjacent pipe fittings 2, so that the structural stability between the two adjacent pipe fittings 2 can be enhanced.

Specifically, the fin unit 39 is a plate-like structure. Each fin unit 39 is provided with a fin hole 32, and the fin units 39 are inserted into the first pipe body 7 and the second pipe body 202 through the fin holes 32 to complete connection between the fin units 39 and the pipe fitting 2. A plurality of fin units 39 are inserted on the first pipe body 7 and each second pipe body 202 so as to improve the heat exchange effect.

Referring to fig. 8, the coil structure has a first flat tube group 23, a second flat tube group 24, a third flat tube group 25, a fourth flat tube group 26 and a first tube body 7, the length of which increases from top to bottom, the first flat tube group 23 has two first flat tubes parallel to each other, the second flat tube group 24 has two second flat tubes parallel to each other and consistent in length, the third flat tube group 25 has two third flat tubes parallel to each other and consistent in length, and the fourth flat tube group 26 has two fourth flat tubes parallel to each other and consistent in length. The fin units 39 are respectively inserted on the first flat tube, the second flat tube, the third flat tube, the fourth flat tube and the first tube body 7, and the axial length of the coil structure is gradually increased from top to bottom, so that the fin units 39 are convenient to modularly install areas with different heights of the coil structure, and the fin assemblies 3 with different heights do not need to be manufactured.

In addition, the fin units 39 on two adjacent second tube bodies 202 are staggered with each other, and the fin units 39 on the first tube body 7 and the second tube bodies 202 are staggered with each other. That is, a plurality of fin units 39 are inserted on the two first flat tubes, and the fin units 39 on the two first flat tubes are staggered. A plurality of fin units 39 are inserted on the two second flat pipes, and the fin units 39 on the two second flat pipes are arranged in a staggered mode. A plurality of fin units 39 are inserted on the two third flat pipes, and the fin units 39 on the two third flat pipes are arranged in a staggered mode. A plurality of fin units 39 are inserted on the two fourth flat tubes, and the fin units 39 on the two fourth flat tubes are arranged in a staggered mode. The first tube body 7 is inserted with a plurality of fin units 39, and the fourth flat tube is staggered with the fin units 39 on the first tube body 7. The fin units 39 on the two adjacent pipe fittings 2 are arranged in a staggered mode, so that the fin units 39 can conveniently carry out modularized installation on the coil pipe structure, the water drainage efficiency of the pipe fittings 2 can be increased through gaps generated by the staggering of the fin units 39, and the water drainage problem is optimized.

Referring to fig. 2, the embodiment of the present utility model further provides a heat exchanger, which includes a fixing assembly 4, a first header 5, a second header 6, and a plurality of heat exchange assemblies, wherein the plurality of heat exchange assemblies are arranged side by side at intervals, two axial sides of the plurality of heat exchange assemblies are respectively arranged on the fixing assembly 4 in a penetrating manner, and the first header 5 is communicated with the second header 6 through a coil structure of the plurality of heat exchange assemblies.

Specifically, the coil structure is threaded onto the fixed assembly 4. More specifically, the first tubular body 7 and the plurality of tubular members 2 of different lengths are each threaded onto the fixed assembly 4. That is, the fixing assembly 4 is provided with a plurality of fixing openings, the first pipe body 7 and the second pipe body 202 are arranged on different fixing openings in a penetrating manner, and the outer peripheral surfaces of the first pipe body 7 and the second pipe body 202 are in contact with the inner peripheral surfaces of the corresponding fixing openings. The structural stability among the plurality of pipe fittings 2 is enhanced through the fixing component 4, and then the structural stability of the heat exchange component is enhanced.

Referring to fig. 7 and 8, in one embodiment, a plurality of coil structures are provided, with a gap between two adjacent coil structures. The heat exchange effect of the heat exchange assembly is enhanced by increasing the number of the coil structures, and meanwhile, the heat exchange assembly can be guaranteed to have a good heat exchange effect by enabling no joint part to exist between two adjacent coil structures.

Specifically, a plurality of coil structures are all provided on the fixing assembly 4 in a penetrating manner. The fixing of the plurality of coil structures is realized through the fixing component 4 so as to enhance the stability of the whole structure of the heat exchange component.

In one embodiment, the fixing assembly 4 comprises a first fixing unit 41 and a second fixing unit 42, and two axial sides of the coil structure are respectively penetrated on the first fixing unit 41 and the second fixing unit 42. The coil structure may be reinforced at both axial sides thereof by the first fixing unit 41 and the second fixing unit 42, respectively, to enhance structural stability of the heat exchange assembly.

Specifically, the fixing assembly 4 includes a first fixing unit 41 and a second fixing unit 42, the second fixing unit 42 is composed of a plurality of first fixing pieces 421 and second fixing pieces 422 connected end to end, one axial side of the coil structure is arranged on the first fixing unit 41 in a penetrating manner, the other axial side of the coil structure is arranged on the first fixing pieces 421 in a penetrating manner, and the bottom surface of the second fixing pieces 422 is in butt joint with the top surface of the fin assembly 3.

More specifically, the first fixing unit 41 is provided with a plurality of fixing openings, the second fixing unit 42 is provided with a plurality of positioning openings, two axial sides of the first pipe body 7 and the second pipe body 202 are respectively penetrated on different fixing openings and positioning openings, and inner peripheral surfaces of the fixing openings and the positioning openings are in butt joint with outer peripheral surfaces of the corresponding second pipe body 202 and the first pipe body 7. The structural stability among the plurality of second pipe bodies 202 is enhanced through the fixing component 4, so that the structural stability of the heat exchange component is enhanced.

In one embodiment, the second fixing unit 42 is composed of a plurality of first fixing pieces 421 and second fixing pieces 422 connected end to end, the pipe fitting 2 is arranged on the first fixing pieces 421 in a penetrating manner, and the bottom surface of the second fixing pieces 422 is abutted to the top surface of the fin assembly 3. The first fixing member 421 and the second fixing member 422 may be integrally formed or may be separately formed. Two adjacent first fixing pieces 421 can be connected through the second fixing pieces 422, the first fixing pieces 421 are assisted to strengthen the structural stability among the plurality of pipe fittings 2, and the structural stability among the second fixing units 42 and the heat exchange components can be further ensured due to the fact that the bottom surfaces of the second fixing pieces 422 are abutted with the top surfaces of the fin components 3.

Specifically, two ends of the second fixing member 422 are respectively connected to two adjacent first fixing members 421, the positioning opening is disposed on the first fixing members 421, the second pipe 202 is disposed on the positioning opening in a penetrating manner, and the outer peripheral surface of the pipe 2 abuts against the inner peripheral surface of the positioning opening.

More specifically, referring to fig. 8, in this case, when the coil structure has the first flat tube group 23, the second flat tube group 24, the third flat tube group 25, the fourth flat tube group 26, and the first tube body 7, whose lengths are gradually increased from top to bottom, the second fixing unit 42 includes five first fixing pieces 421 and four second fixing pieces 422. The first flat tube group 23, the second flat tube group 24, the third flat tube group 25, the fourth flat tube group 26 and the first tube body 7 are respectively penetrated on the five first fixing pieces 421. Two ends of the second fixing piece 422 are respectively connected with two adjacent first fixing pieces 421, and bottom surfaces of the four second fixing pieces 422 are respectively abutted with top surfaces of the fin units 39 located on the second flat tube group 24, the third flat tube group 25, the fourth flat tube group 26 and the first tube body 7.

Referring to fig. 7 and 8, in one embodiment, a plurality of coil structures each communicate with a first header 5 and a second header 6. The low-temperature and low-pressure liquid or the high-temperature and high-pressure gas can be simultaneously input into the plurality of coil structures through the first header 5, and the steam or condensate generated by heat exchange in the plurality of coil structures can be simultaneously output through the second header 6.

Specifically, the first pipe body 7 of the longest length of the plurality of coil structures is communicated with the first header 5, and the pipe fitting 2 of the shortest length of the plurality of coil structures is communicated with the second header 6. When the heat exchange assembly is used as an evaporator, low-temperature and low-pressure liquid can be input into the plurality of coil structures through the first header 5, and steam generated after heat exchange can be intensively discharged through the second header 6. When the heat exchange assembly is used as a condenser, high-temperature and high-pressure gas can be input into the plurality of coil structures through the second header 6, and condensate generated after heat exchange can be intensively discharged through the first header 5.

More specifically, when the coil structure has the first flat tube group 23, the second flat tube group 24, the third flat tube group 25, the fourth flat tube group 26 and the first tube body 7 whose lengths are stepwise increased from top to bottom, the first tube body 7 of the plurality of coil structures is communicated with the first header 5, and the first flat tube group 23 of the plurality of coil structures is communicated with the second header 6. When the heat exchange assembly is used as an evaporator, low-temperature low-pressure liquid can be input into the plurality of first tube bodies 7 through the first header 5, and steam generated after heat exchange can be intensively discharged through the first flat tube group 23. When the heat exchange assembly is used as a condenser, high-temperature and high-pressure gas can be input into the plurality of coil structures through the first flat tube group 23, and condensate generated after heat exchange can be intensively discharged through the first tube body 7.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (11)

1. A coil structure comprising: a plurality of first elbows (1) and a plurality of pipe fitting (2) of different length, every pipe fitting (2) include second elbow (201) and two second body (202), two second body (202) are passed through second elbow (201) intercommunication, the length of two second body (202) is unanimous, a plurality of pipe fitting (2) set up side by side and with a plurality of first elbow (1) end to end, and a plurality of the axial length of pipe fitting (2) is progressively increased from top to bottom.

2. The coil structure according to claim 1, wherein the number of the first elbows (1) is consistent with the number of the pipe fittings (2), the coil structure further comprises first pipe bodies (7), the first pipe bodies (7) are arranged in parallel with the pipe fittings (2), the first pipe bodies (7) are arranged on the lower sides of a plurality of the pipe fittings (2) and are communicated with the pipe fittings (2) through the first elbows (1), and the axial lengths of the pipe fittings (2) and the first pipe bodies (7) are gradually increased from top to bottom in an arithmetic progression.

3. The coil structure of claim 2, wherein the relationship of the series of arithmetic is:

wherein d is the arithmetic array spacing; a is an experience coefficient; lmax is the length of the first pipe body; lmin is the shortest length of the tube; ρ is the density of the flowing refrigerant; h is the height of the second pipe body; di is the hydraulic diameter of the second tubular body; b is a refrigerant conversion coefficient; qi is the mass circulation flow of the air conditioning unit.

4. A heat exchange assembly comprising a fin assembly (3) and a coil structure according to any one of claims 1-3, said fin assembly (3) being provided in plurality, a plurality of said fin assemblies (3) being arranged on said coil structure at intervals along the axial direction of said tube (2).

5. The heat exchange assembly of claim 4, wherein the coil structure comprises a first tube and/or a second tube, the first tube and/or the second tube being flat tubes;

be equipped with a plurality of fin holes (32) on fin subassembly (3), follow the width direction of fin subassembly (3), fin hole (32) follow first side (31) of fin subassembly (3) inwards sunken formation, follow the length direction of fin subassembly (3), a plurality of fin hole (32) equidistant interval sets up, fin subassembly (3) are passed through fin hole (32) are inserted and are located flat pipe.

6. The heat exchange assembly of claim 5, wherein the fin assembly (3) further comprises a turbulence port (33), the turbulence port (33) being in communication with the fin aperture (32) in respect of the fin assembly (3);

two bending surfaces (331) forming the turbulence openings (33) are arranged at intervals and are respectively connected with the first side surface (31).

7. The heat exchange assembly of claim 6 wherein the inflection surface comprises a first flow disruption surface, a second flow disruption surface, and a third flow disruption surface, the second flow disruption surface connecting the first flow disruption surface and the third flow disruption surface, the first flow disruption surface being connected to the first side with an included angle therebetween of an obtuse angle, the third flow disruption surface being disposed parallel to the first flow disruption surface.

8. The heat exchange assembly of claim 4, wherein the coil structure comprises a first tube and/or a second tube, the first tube and/or the second tube being flat tubes;

the fin assembly (3) comprises a plurality of fin units (39), each fin unit comprises a fin hole, and the fin units (39) are respectively inserted into the first pipe body (7) and the pipe fittings (2) through the fin holes.

9. Heat exchange assembly according to claim 8, wherein the fin units (39) on two adjacent second tubes (202) are staggered with respect to each other, and the fin units (39) on the first tubes (7) and the second tubes (202) are staggered with respect to each other.

10. A heat exchanger, characterized by comprising a fixing assembly (4), a first header (5), a second header (6) and a plurality of heat exchange assemblies according to any one of claims 4-9, wherein a plurality of heat exchange assemblies are arranged at intervals side by side, two axial sides of the plurality of heat exchange assemblies are respectively penetrated on the fixing assembly (4), and the first header (5) is communicated with the second header (6) through a plurality of coil structures of the heat exchange assemblies.

11. The heat exchanger according to claim 10, wherein the fixing assembly (4) comprises a first fixing unit (41) and a second fixing unit (42), the second fixing unit (42) is composed of a plurality of first fixing pieces (421) and second fixing pieces (422) which are connected end to end, one axial side of the coil structure is penetrated on the first fixing unit (41), the other axial side of the coil structure is penetrated on the first fixing pieces (421), and the bottom surface of the second fixing pieces (422) is abutted with the top surface of the fin assembly (3).