CN219736056U

CN219736056U - Long tube type heat exchanger

Info

Publication number: CN219736056U
Application number: CN202321209629.8U
Authority: CN
Inventors: 熊海燕
Original assignee: BEIJING TIANYUN SUN TECHNOLOGY DEVELOPMENT CO LTD
Current assignee: BEIJING TIANYUN SUN TECHNOLOGY DEVELOPMENT CO LTD
Priority date: 2023-05-18
Filing date: 2023-05-18
Publication date: 2023-09-22
Anticipated expiration: 2033-05-18

Abstract

The utility model discloses a long tube type heat exchanger, which sequentially comprises a spiral tube, an outer sleeve and a heat-insulating pipe from inside to outside, wherein spiral grooves extending spirally along the wall surfaces are formed in the inner wall surface and the outer wall surface of the spiral tube, concave-convex patterns which are uniformly distributed are pressed on the inner wall surface and the outer wall surface of the spiral tube, and the extending directions of the concave-convex patterns are mutually perpendicular to the spiral extending directions of the spiral grooves. The spiral pipe of the long pipe type heat exchanger is provided with the spiral grooves and the concave-convex patterns, and compared with the traditional heat exchanger, the heat exchange area can be greatly increased under the same length; under the same heat exchange requirement, the length of the long tube heat exchanger can be reduced, and the heat exchange density of the long tube heat exchanger is improved. By controlling the shape, the bending angle and the bending shape of the long tube type heat exchanger, the space can be utilized more efficiently, and the heat pump heat exchanger is particularly suitable for a narrow space of a heat pump system.

Description

Long tube type heat exchanger

Technical Field

The utility model relates to the technical field of heat exchangers, in particular to a long tube type heat exchanger.

Background

The tube heat exchanger (shell and tube heat exchanger), also called a shell-and-tube heat exchanger, is a dividing wall type heat exchanger with the wall surface of the tube bundle enclosed in the shell as a heat transfer surface, has a long history of industrial application and is still dominant in all heat exchangers. The tubular heat exchanger has simple structure, low cost, wider flow section and easy scale cleaning; the defects are also more prominent, and mainly consist in: the heat transfer coefficient is low, the occupied space is large, and the heat transfer coefficient is not suitable for a narrow space.

Currently, tubular heat exchangers on the market are usually manufactured into spiral annular structures or spiral rectangular structures, and the whole product is heavy in structure and high in space requirement and cannot be installed in a narrow space of a heat pump system.

Disclosure of Invention

The utility model aims to provide a long tube type heat exchanger.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a long tube type heat exchanger, is spiral pipe, outer tube and heat preservation and insulation pipe from interior to exterior in proper order, all be equipped with on the internal face and the external wall of spiral pipe and be the helicla flute that the spiral extended along the wall, it has evenly distributed's concave-convex pattern to also press on the internal face and the external wall of spiral pipe, the extending direction of concave-convex pattern and the spiral extending direction mutually perpendicular of helicla flute.

Wherein the depth of the spiral groove is 2-8mm, and the spiral distance is 15-100mm.

Wherein, the depth of the concave-convex patterns is 0.5-5mm, and the interval between two adjacent concave-convex patterns is 3-8mm.

Wherein the pipe diameter of the spiral pipe is 10-50mm; the inside of the spiral pipe is of a hollow structure, and an annular cavity is formed between the spiral pipe and the outer sleeve.

Wherein the pipe diameter of the outer sleeve is 16-60mm.

Wherein the wall thickness of the heat preservation and insulation pipe is 3-12mm; the outer wall surface of the outer sleeve is attached to the inner wall surface of the heat preservation and insulation pipe.

Wherein, the spiral pipe both ends are equipped with spiral pipe entry and spiral pipe export.

The length of the spiral tube is longer than that of the outer sleeve, and two ends of a cavity between the spiral tube and the outer sleeve are sealed and are respectively provided with an outer sleeve inlet and an outer sleeve outlet; the long tube type heat exchanger may be bent into an arbitrary shape.

Wherein, the spiral tube and the outer sleeve are both made of metal materials.

Compared with the prior art, the utility model has the outstanding effects that:

(1) The spiral pipe of the long pipe type heat exchanger is provided with the spiral grooves and the concave-convex patterns, so that the heat exchange area can be greatly increased under the same length compared with the traditional heat exchanger; under the same heat exchange requirement, the length of the long tube heat exchanger can be reduced, and the heat exchange density of the long tube heat exchanger is improved.

(2) In addition, by controlling the shape, bending angle and bending shape of the long tube type heat exchanger, the space can be utilized more efficiently, and the heat pump system is particularly suitable for a narrow space of a heat pump system.

The long tube type heat exchanger according to the present utility model will be further described with reference to the accompanying drawings and specific examples.

Drawings

FIG. 1 is a perspective view of a long tube heat exchanger;

FIG. 2 is a perspective view of the structure of the spiral tube and the outer sleeve;

FIG. 3 is an end schematic view of the spiral tube and outer sleeve;

FIG. 4 is a schematic view of the structure of the spiral tube;

FIG. 5 is an enlarged view of a portion of the spiral tube;

FIG. 6 is another enlarged view of a portion of the spiral tube;

FIG. 7 is a schematic illustration of the use of a long tube heat exchanger in a certain heat pump system;

FIG. 8 is a schematic view of the long tube heat exchanger of FIG. 7;

fig. 9 is a schematic view of the long tube heat exchanger of fig. 8 at the inlet and outlet.

The heat-insulating pipe comprises a 1-spiral pipe, a 2-outer sleeve pipe, a 3-heat-insulating pipe, a 10-long pipe type heat exchanger, an 11-spiral pipe inlet, a 12-spiral groove, a 13-concave convex pattern, a 14-spiral pipe outlet, a 21-outer sleeve pipe outlet and a 22-outer sleeve pipe inlet.

Detailed Description

As shown in fig. 1-6, a long tube type heat exchanger sequentially comprises a spiral tube 1, an outer sleeve 2 and a heat insulation pipe 3 from inside to outside, wherein spiral grooves 12 extending spirally along the wall surface are formed in the inner wall surface and the outer wall surface of the spiral tube 1, uniformly distributed concave-convex patterns 13 are pressed on the inner wall surface and the outer wall surface of the spiral tube 1, and the extending directions of the concave-convex patterns 13 are mutually perpendicular to the spiral extending directions of the spiral grooves 12.

The depth of the spiral groove 12 is 2-8mm and the spiral pitch is 15-100mm. The depth of the concave-convex patterns 13 is 0.5-5mm, and the interval between two adjacent concave-convex patterns 13 is 3-8mm.

The pipe diameter of the spiral pipe 1 is 10-50mm; the inside of the spiral tube 1 is of a hollow structure, and an annular cavity is formed between the spiral tube 1 and the outer sleeve 2. The pipe diameter of the outer sleeve 2 is 16-60mm. The wall thickness of the heat preservation and insulation pipe 3 is 3-12mm; the outer wall surface of the outer sleeve 2 is attached to the inner wall surface of the thermal insulation pipe 3.

The spiral pipe 1 is provided with a spiral pipe inlet 11 and a spiral pipe outlet 14 at both ends. The length of the spiral tube 1 is greater than that of the outer sleeve 2, and two ends of a cavity between the spiral tube 1 and the outer sleeve 2 are sealed and are respectively provided with an outer sleeve inlet 22 and an outer sleeve outlet 21 for the entrance and the outlet of the refrigerant.

The spiral tube 1 and the outer sleeve 2 are made of metal materials.

The two ends of the whole long tube type heat exchanger have the same appearance. The water in the pipe of the spiral pipe 1 flows, and the refrigerant flows in the cavity between the spiral pipe 1 and the outer sleeve 2 for heat exchange. When in use, the long tube type heat exchanger can be bent into any shape according to the structure of specific equipment.

Fig. 7 is a schematic view of a long tube type heat exchanger when used in a heat pump system in which the long tube type heat exchanger 10 is bent into a rectangular shape according to the condition of the inner space, and the coil inlet 11 and the coil outlet 14 are disposed at the upper right corner of the inner space.

The above examples are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solution of the present utility model should fall within the scope of protection defined by the claims of the present utility model without departing from the spirit of the present utility model.

Claims

1. A long tube heat exchanger, characterized in that: the spiral pipe is characterized in that a spiral pipe (1), an outer sleeve pipe (2) and a heat preservation and insulation pipe (3) are sequentially arranged from inside to outside, spiral grooves (12) which spirally extend along the wall surface are formed in the inner wall surface and the outer wall surface of the spiral pipe (1), evenly-distributed concave-convex patterns (13) are further pressed on the inner wall surface and the outer wall surface of the spiral pipe (1), and the extending directions of the concave-convex patterns (13) are mutually perpendicular to the spiral extending directions of the spiral grooves (12).

2. The long tube heat exchanger of claim 1, wherein: the depth of the spiral groove (12) is 2-8mm, and the spiral pitch is 15-100mm.

3. The long tube heat exchanger of claim 2, wherein: the depth of the concave-convex patterns (13) is 0.5-5mm, and the distance between two adjacent concave-convex patterns (13) is 3-8mm.

4. A long tube heat exchanger according to claim 3, wherein: the pipe diameter of the spiral pipe (1) is 10-50mm; the inside of the spiral tube (1) is of a hollow structure, and an annular cavity is formed between the spiral tube (1) and the outer sleeve (2).

5. The long tube heat exchanger of claim 4, wherein: the pipe diameter of the outer sleeve (2) is 16-60mm.

6. The long tube heat exchanger of claim 5, wherein: the wall thickness of the heat preservation and insulation pipe (3) is 3-12mm; the outer wall surface of the outer sleeve (2) is attached to the inner wall surface of the heat preservation and insulation pipe (3).

7. The long tube heat exchanger of claim 6, wherein: the two ends of the spiral tube (1) are provided with a spiral tube inlet (11) and a spiral tube outlet (14).

8. The long tube heat exchanger of claim 7, wherein: the length of the spiral tube (1) is greater than that of the outer sleeve (2), and two ends of a cavity between the spiral tube (1) and the outer sleeve (2) are sealed and are respectively provided with an outer sleeve inlet (22) and an outer sleeve outlet (21).

9. The long tube heat exchanger of claim 8, wherein: the spiral tube (1) and the outer sleeve (2) are both made of metal materials; the long tube type heat exchanger may be bent into an arbitrary shape.