CN216745672U

CN216745672U - Double-channel folding inner finned tube structure

Info

Publication number: CN216745672U
Application number: CN202123206270.2U
Authority: CN
Inventors: 张正阳; 李明
Original assignee: Nanjing Xiezhong Auto Airconditioner Company Co ltd
Current assignee: Xiezhong International Thermal Management System Jiangsu Co ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-06-14
Anticipated expiration: 2031-12-20

Abstract

The utility model discloses a double-channel folding inner finned tube structure, which comprises a first coolant pipe, a second coolant pipe and an inner fin, wherein the second coolant pipe is concentrically arranged in the first coolant pipe, a first coolant channel is formed between the first coolant pipe and the second coolant pipe, and a second coolant channel is formed inside the second coolant pipe; the inner fin is positioned between the inner wall of the first coolant pipe and the outer wall of the second coolant pipe, the inner fin adopts a zigzag structure, and the inflection part is abutted against the cavity wall of the first coolant channel; outer fins are arranged between the outer walls of the adjacent first coolant pipes; the utility model discloses can circulate two kinds of refrigerants, two kinds of heat exchangers make up into a heat exchanger, realize multiple functions, under realizing the equal heat transfer performance of traditional heat exchanger, material cost descends, and the lightweight obtains improving, compact structure, and space utilization obtains improving.

Description

Double-channel folding inner finned tube structure

Technical Field

The utility model relates to a heat exchanger technical field, concretely relates to finned tube structure in binary channels is folded.

Background

1. The existing flat tube of the heat exchanger is generally applied to cooling of an automobile air conditioning system, such as a condenser; for heat dissipation of engine or motor water systems, such as radiators; the engine intake system is cooled, such as an intercooler. Which acts as a heat-dissipating element for the heat exchanger core. Generally, aluminum extruded profile pipes, folding pipes (plate rolling, generally including two types of pipes with inner fins and pipes without inner fins), high-frequency welded pipes (plate high-frequency welding) and the like are adopted; the main function of the cooling device is to uniformly distribute the coolant through the internal channels of the flat tubes, transfer the heat to the outside through the tube walls, and exchange the heat with the external environment (air or water) through the external fins. The existing internal channels of the flat tubes are single channels, namely, the flat tubes can only circulate a single coolant and can only transfer heat through the tube walls, the heat transfer efficiency is limited by a pipeline structure and flat tube materials, the maximum heat transfer efficiency can not be exerted sometimes under the conditions of limited space, limited weight, severe working conditions and the like, the heat exchange between different systems can not be realized only as a single component of a single system, and the heat exchange efficiency of the whole system is improved.

SUMMERY OF THE UTILITY MODEL

The technical purpose is as follows: function singleness, space utilization to current heat exchange tube are low, and heat transfer path is single not enough, the utility model discloses a compact structure, space utilization obtains improving, can realize connecting simultaneously different thermal management system and carry out the interior finned tube structure in the binary channels is folded to the heat transfer.

The technical scheme is as follows: in order to achieve the technical purpose, the utility model adopts the following technical scheme:

a two-pass folded inner fin structure includes a first coolant tube, a second coolant tube concentrically disposed within the first coolant tube, the first coolant tube and the second coolant tube defining a first coolant passage therebetween, the second coolant tube defining a second coolant passage therein, and an inner fin; the inner fin is positioned between the inner wall of the first coolant pipe and the outer wall of the second coolant pipe, the inner fin adopts a zigzag structure, and the zigzag position is abutted against the cavity wall of the first coolant channel; and outer fins are arranged between the outer walls of the adjacent first coolant pipes.

Preferably, the end of the second coolant pipe of the present invention protrudes from the end of the first coolant pipe to communicate with the corresponding coolant chambers, respectively.

Preferably, the first coolant pipe and the second coolant pipe of the present invention are both formed by rolling a plate, and are brazed and fixed at the rolled joint.

Preferably, the plate material at the interface of the first coolant pipe of the present invention is perpendicular to the side surface of the adjacent first coolant pipe, and the end part of the plate material is abutted against the outer wall of the second coolant pipe to form the first support structure; the plate material at the interface of the second coolant pipes is vertical to the side surface of the adjacent second coolant pipe, and the end part of the plate material is abutted against the inner wall of the second coolant pipe to form a second support structure.

Preferably, the interface of the first coolant pipe and the interface of the second coolant pipe of the present invention are away from each other.

Has the beneficial effects that: the utility model provides a finned tube structure in binary channels is folded has following beneficial effect:

1. the utility model discloses can carry out transport, the heat transfer of two kinds of coolants simultaneously, contrast single coolant heat exchanger, improve heat exchanger heat transfer efficiency greatly.

2. Two refrigerants can circulate, and the two heat exchangers are combined into one heat exchanger to realize multiple functions; under the condition of realizing the same heat exchange performance of the traditional heat exchanger, the material cost is reduced, the light weight is improved, the structure is compact, and the space utilization rate is improved;

3. two different heat management systems are connected, heat exchange can be carried out between two transmitted coolants, the energy utilization rate is improved, the energy consumption is reduced, and the heat management system is suitable for multiple working modes of the whole vehicle heat management.

4. The utility model discloses utilize the book system interface of first coolant pipe and second coolant pipe to form bearing structure, reinforcing structural strength guarantees the stability of passageway.

5. The utility model discloses the interface of first coolant pipe deviates from each other with the interface of second coolant pipe, avoids the passageway that interface region unevenness arouses to warp.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

FIG. 1 is an overall structure diagram of the present invention;

FIG. 2 is a cross-sectional view of the end of the present invention;

wherein 1-the first coolant tube, 2-the second coolant tube, 3-the inner fin, 4-the first coolant channel, 5-the second coolant channel, 6-the first support structure, 7-the second support structure.

Detailed Description

The present invention will be more fully described by way of a preferred embodiment in conjunction with the accompanying drawings, which are not intended to limit the scope of the invention.

As shown in fig. 1 and 2, the double-channel folded inner fin structure disclosed by the invention comprises a first coolant pipe 1, a second coolant pipe 2 and an inner fin 3, wherein the second coolant pipe 2 is concentrically arranged in the first coolant pipe 1, a first coolant channel 4 is formed between the first coolant pipe 1 and the second coolant pipe 2, and a second coolant channel 5 is formed in the second coolant pipe 2; the inner fin 3 is positioned between the inner wall of the first coolant pipe 1 and the outer wall 2 of the second coolant pipe, the inner fin 3 adopts a zigzag structure, and the bent part is abutted against the cavity wall of the first coolant channel 4; outer fins are provided between the outer walls of the adjacent first coolant tubes 1. The end portions of the second coolant pipes 2 protrude from the end portions of the first coolant pipes 1, and communicate with the corresponding coolant chambers, respectively; the first coolant radiates or absorbs heat and is connected with the outer fins through the pipe wall of the outer folding pipe to exchange heat with outside air, and the first coolant internally exchanges heat with the second coolant through the pipe wall of the inner folding pipe and the inner fins.

In a specific embodiment, the first coolant pipe 1 and the second coolant pipe 2 of the present invention are both formed by rolling a plate, and are brazed and fixed at the rolled joint, and form a seal at the joint, so as to separate the first coolant channel 4 and the second coolant channel from each other, thereby circulating different coolants.

In a specific embodiment, the plate material at the interface of the first coolant pipe 1 of the present invention is perpendicular to the side surface of the adjacent first coolant pipe 1, and the end part is abutted against the outer wall of the second coolant pipe 2 to form the first supporting structure 6; the plate at the interface of the second coolant pipe 2 is vertical to the side surface of the adjacent second coolant pipe, and the end part of the plate is abutted against the inner wall of the second coolant pipe 2 to form a second support structure 7; the self interface structure of the pipe folding process is utilized to form a support, the integral structure and the bearing capacity of the heat exchange pipe can be enhanced, and the deformation influence on the circulation of the coolant is avoided.

The utility model discloses an interface 1 of first coolant pipe deviates from each other with the interface of second coolant pipe 2, guarantees that the tip contact surface of first bearing structure 6, second bearing structure 7 is for leveling the structure.

The utility model provides a finned tube structure in binary channels is folding can be in first coolant passage 4 circulation refrigerant, the 5 circulation coolant liquids of second coolant passage, and is sealed completely between two rooms, each other not communicate when using. The refrigerant radiates or absorbs heat to exchange heat with the outside air through the outer fins, and the inside exchanges heat with the coolant in the second coolant passage 5 through the pipe walls of the second coolant pipes and the inner fins. The scheme can be suitable for the functions of a condenser and a water heater or the functions of a heat pump outdoor heat exchanger and a low-temperature water radiator, and can be matched for use in a new energy automobile air conditioning system heat management system and a motor battery heat management system.

The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. A two-pass folded inner fin tube structure, characterized by comprising a first coolant tube (1), a second coolant tube (2), and an inner fin (3), the second coolant tube (2) being concentrically disposed within the first coolant tube (1), a first coolant passage (4) being formed between the first coolant tube (1) and the second coolant tube (2), and a second coolant passage (5) being formed inside the second coolant tube (2); the inner fin (3) is positioned between the inner wall of the first coolant pipe (1) and the outer wall of the second coolant pipe (2), the inner fin (3) adopts a zigzag structure, and the zigzag position is abutted against the cavity wall of the first coolant channel (4); and outer fins are arranged between the outer walls of the adjacent first coolant pipes (1).

2. The double channel folded inner fin tube structure according to claim 1, wherein the ends of the second coolant tubes (2) protrude from the ends of the first coolant tubes (1) to communicate with the respective coolant chambers.

3. The double-channel folded inner fin tube structure as claimed in claim 1, wherein the first coolant tube (1) and the second coolant tube (2) are formed by rolling a plate material, and are fixed by brazing at a rolling interface.

4. A double pass folded inner fin tube structure according to claim 3, wherein the plate material at the interface of the first coolant tubes (1) is perpendicular to the side of the adjacent first coolant tubes (1), and the end part abuts against the outer wall of the second coolant tubes (2) to form the first support structure (6); the plate material at the interface of the second coolant pipe (2) is vertical to the side surface of the adjacent second coolant pipe, and the end part of the plate material is abutted against the inner wall of the second coolant pipe (2) to form a second supporting structure (7).

5. The two-pass folded inner fin tube arrangement according to claim 4, characterized in that the interface of the first coolant tube (1) and the interface of the second coolant tube (2) are facing away from each other.