A gas and gas heat exchange device and its application

Abstract

The present invention relates to a gas and gas heat exchange device and its application, wherein the gas and gas heat exchange device comprises a high-temperature gas pipeline, a heat exchange air inlet cavity, a heat exchange air outlet cavity, and a heat exchange cavity; the high-temperature gas pipeline is provided with a high-temperature gas inlet, a high-temperature gas air inlet cavity, a high-temperature gas air inlet hole, a high-temperature gas air outlet cavity, a high-temperature gas air outlet hole, a high-temperature gas outlet, and a partition; the heat exchange air inlet cavity is provided with a heat exchange air inlet, a heat exchange air inlet tangential air duct, and a spoiler; the heat exchange air outlet cavity is provided with a heat exchange air outlet and a heat exchange air outlet tangential air duct; a high-efficiency heat exchange unit is provided in the heat exchange cavity; the gas and gas heat exchange device is characterized in that the heat exchange device has a large heat exchange area and high heat exchange efficiency under the same volume; and the heat exchange device has a simple structure and strong practicality.

Description

Technical Field

[0001] The present invention belongs to the technical field of heat exchange, and in particular relates to a gas and gas heat exchange device and application thereof. Background Art

[0002] Heat exchangers are energy-saving devices that transfer heat between two or more fluids at different temperatures. They transfer heat from a higher temperature fluid to a lower temperature fluid, so that the fluid temperature reaches the specified index of the process to meet the needs of process conditions. They are also one of the main devices for improving energy utilization. The heat exchangers currently on the market have low heat exchange efficiency and often require a large volume to achieve the required power, which cannot meet market demand. Summary of the invention

[0003] The purpose of the present invention is to provide a gas-to-gas heat exchange device, the characteristics of which are that the heat exchange device has a large heat exchange area and high heat exchange efficiency under the same volume; and the heat exchange device has a simple structure and strong practicality.

[0004] The gas and gas heat exchange device comprises a high-temperature gas pipeline, a heat exchange air inlet cavity, a heat exchange air outlet cavity, and a heat exchange cavity;

[0005] Wherein, the high temperature gas pipeline is provided with a high temperature gas inlet, a high temperature gas inlet cavity, a high temperature gas inlet hole, a high temperature gas outlet cavity, a high temperature gas outlet hole, a high temperature gas outlet, and a partition;

[0006] The heat exchange air intake cavity is provided with a heat exchange air intake port, a heat exchange air intake tangential air duct, and a spoiler;

[0007] The heat exchange air outlet cavity is provided with a heat exchange air outlet and a heat exchange air outlet tangential air duct;

[0008] A high-efficiency heat exchange unit is provided in the heat exchange cavity;

[0009] Among them, the high-temperature gas inlet of the high-temperature gas pipeline is connected to the external gas heat source; the high-temperature gas inlet hole on the high-temperature gas inlet cavity is connected to the heat exchange cavity, and communicates with one end of the inner channel of the high-efficiency heat exchange unit; the high-temperature gas outlet hole on the high-temperature gas outlet cavity is communicated with the other end of the high-efficiency heat exchange unit; the partition is fixed in the high-temperature gas pipeline to separate the high-temperature gas inlet cavity and the high-temperature gas outlet cavity.

[0010] In the heat exchange device provided by the present invention, the high-temperature gas pipeline is provided with a partition, and the high-temperature gas must enter the high-efficiency heat exchange unit through the high-temperature gas inlet hole from the high-temperature gas inlet cavity, and then enter the high-temperature gas outlet cavity through the high-temperature gas outlet hole.

[0011] The heat exchange air intake cavity is provided with a heat exchange air intake tangential air passage and a spoiler, the spoiler is arc-shaped and covers the outer channel of the high-efficiency heat exchange unit. As the heat exchange air intake tangential air passage goes deeper, the gas inlet formed by the spoiler and the outer channel of the high-efficiency heat exchange unit becomes larger, so that the gas entering the outer channel of the high-efficiency heat exchange unit is more evenly distributed.

[0012] Wherein, the high-efficiency heat exchange unit is a folded cylindrical structure folded into an isosceles triangle.

[0013] The high-efficiency heat exchange unit is provided with an inner channel and an outer channel; the inner channel is formed by the high-efficiency heat exchange unit and the outer wall of the high-temperature gas pipeline; the outer channel is formed by the high-efficiency heat exchange unit and the inner wall of the shell.

[0014] Preferably, the high-efficiency heat exchange unit is made by folding high-temperature resistant and corrosion-resistant plates.

[0015] The high-efficiency heat exchange unit is made of folded high-temperature and corrosion-resistant plates. The heat exchange area of ​​the inner channel and the outer channel formed by folding is an isosceles triangle, and the two side walls of the isosceles triangle are heat exchange boundaries; the inner channel is connected to the high-temperature gas, and the outer channel is connected to the heat exchange gas.

[0016] Among them, one end of the heat exchange air inlet of the heat exchange air inlet cavity is connected to the external gas circulation heat absorption device, and the other end is connected to the heat exchange air inlet tangential air duct of the heat exchange air inlet cavity; the spoiler is placed in the heat exchange air inlet tangential air duct and covers the outer channel of the high-efficiency heat exchange unit; one end of the heat exchange air outlet of the heat exchange air outlet cavity is connected to the external gas circulation heat absorption device, and the other end is connected to the heat exchange air outlet tangential air duct of the heat exchange air outlet cavity.

[0017] Wherein, the heat exchange cavity is surrounded by the outer wall of the high-temperature gas pipeline, the inner wall of the shell and the end plate.

[0018] Wherein, the heat exchange device also includes an overflow channel and an overflow hole;

[0019] The overflow channel and the overflow hole are located at two ends of the heat exchange device.

[0020] Wherein, the heat exchange air inlet and the high-temperature gas inlet are arranged at two ends of the heat exchange device.

[0021] Wherein, the high-efficiency heat exchange unit is fixed by a support plate;

[0022] The support plate and the isosceles triangle folded shape of the high-efficiency heat exchange unit are completely consistent.

[0023] The high-temperature gas pipeline of a gas and gas heat exchange device provided by the present invention is provided with a partition, and the high-temperature gas must enter the high-efficiency heat exchange unit through the high-temperature gas inlet cavity and the high-temperature gas inlet hole, and then enter the high-temperature gas outlet cavity through the high-temperature gas outlet hole, thereby increasing the stroke of the high-temperature gas. Moreover, the heat exchange inlet and the high-temperature gas inlet are located at both ends of the heat exchange device, and the heat exchange gas and the high-temperature gas flow in opposite directions, fully exchanging heat, thereby improving the heat exchange efficiency.

[0024] The gas and gas heat exchange device provided by the present invention are applied to automobile heating, burner heating, civil fixed heating, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A structural diagram of the gas and gas heat exchange device provided;

[0026] Figure 2 A cross-sectional view of the gas and gas heat exchange device provided Figure 1 ;

[0027] Figure 3 A cross-sectional view of the gas and gas heat exchange device provided Figure 2 ;

[0028] Figure 4 A cross-sectional view of the gas and gas heat exchange device provided Figure 3 ;

[0029] Figure 5 It is the structural diagram of the support plate;

[0030] Figure 6 It is the structural diagram of the high-efficiency heat exchange unit;

[0031] In the figure: 1. high-temperature gas pipeline; 2. heat exchange air inlet cavity; 3. heat exchange air outlet cavity; 4. heat exchange cavity; 5. high-temperature gas inlet; 6. heat exchange air inlet; 7. heat exchange air outlet; 8. high-temperature gas outlet; 9. shell; 10. high-temperature gas air inlet cavity; 11. high-temperature gas air inlet hole; 12. high-temperature gas air outlet cavity; 13. high-temperature gas air outlet hole; 14. partition; 15. spoiler; 16. overflow channel; 17. overflow hole; 18. support plate; 19. end plate; 20. heat exchange air inlet tangential air duct; 21. air exchange air outlet tangential air duct; 22. high-efficiency heat exchange unit; 23. inner channel; 24. outer channel. DETAILED DESCRIPTION

[0032] The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0033] Example

[0034] A gas and gas heat exchange device mainly consists of a high-temperature gas pipeline 1, a heat exchange air inlet cavity 2, a heat exchange air outlet cavity 3, a heat exchange cavity 4, a high-efficiency heat exchange unit 22, an overflow channel 16, and an overflow hole 17. The high-temperature gas pipeline 1 is provided with a high-temperature gas inlet 5, a high-temperature gas air inlet cavity 10, a high-temperature gas air inlet hole 11, a high-temperature gas air outlet cavity 12, a high-temperature gas air outlet hole 13, a high-temperature gas outlet 8, and a partition 14. The heat exchange air inlet cavity 2 is provided with a heat exchange air inlet 6, a heat exchange air inlet tangential air channel 20, and a spoiler 15. The heat exchange air outlet cavity 3 is provided with a heat exchange air outlet 7 and a heat exchange air outlet tangential air channel 21. The heat exchange cavity 4 is provided with a high-efficiency heat exchange unit 22, and the high-efficiency heat exchange unit 22 is provided with an inner channel 23 and an outer channel 24. The high-temperature gas inlet 5 of the high-temperature gas pipeline 1 is connected to the external gas heat source; the high-temperature gas inlet hole 11 on the high-temperature gas inlet cavity 10 is connected to the heat exchange cavity 4, and communicates with one end of the inner channel 23 of the high-efficiency heat exchange unit 22; the high-temperature gas outlet hole 13 on the high-temperature gas outlet cavity 12 is communicated with the other end of the high-efficiency heat exchange unit 22; the partition 14 is fixed in the high-temperature gas pipeline 1 to separate the high-temperature gas inlet cavity 10 and the high-temperature gas outlet cavity 12; one end of the heat exchange inlet port 6 of the heat exchange inlet cavity 2 is connected to the external gas circulation heat absorption device, and the other end is connected to the heat exchange inlet tangential airway 20 of the heat exchange inlet cavity 2; the spoiler 15 is placed in the heat exchange inlet tangential airway 2 0, covering the outer channel 24 of the high-efficiency heat exchange unit 22; one end of the heat exchange outlet 7 of the heat exchange outlet cavity 3 is connected to the external gas circulation heat absorption device, and the other end is connected to the heat exchange outlet tangential air channel 21 of the heat exchange outlet cavity 3; the heat exchange cavity 4 is surrounded by the outer wall of the high-temperature gas pipeline 1, the inner wall of the shell 9 and the end plate 19, and the high-efficiency heat exchange unit 22 is placed in the heat exchange cavity 4; the inner channel 23 of the high-efficiency heat exchange unit 22 is formed by the high-efficiency heat exchange unit 22 and the outer wall of the high-temperature gas pipeline 1, and the outer channel 24 is formed by the high-efficiency heat exchange unit 22 and the inner wall of the shell 9; the overflow channel 16 and the overflow hole 17 are located at both ends of the heat exchange device; the high-efficiency heat exchange unit 22 is fixed by the support plate 18;

[0035] In the present invention, the high-temperature gas pipeline 1 is provided with a partition 14 , and the high-temperature gas must enter the high-efficiency heat exchange unit 22 through the high-temperature gas inlet cavity 10 and the high-temperature gas inlet hole 11 , and then enter the high-temperature gas outlet cavity 12 through the high-temperature gas outlet hole 13 .

[0036] In the present invention, the heat exchange air intake cavity 2 is provided with a heat exchange air intake tangential air passage 20 and a spoiler 15, the spoiler 15 is arc-shaped and covers the outer channel 24 of the high-efficiency heat exchange unit 22. As the heat exchange air intake tangential air passage 20 goes deeper, the gas inlet formed by the spoiler 15 and the outer channel 24 of the high-efficiency heat exchange unit 22 becomes larger, so that the circumferential gas entering the outer channel 24 of the high-efficiency heat exchange unit 22 is more evenly distributed.

[0037] In the present invention, the heat exchange air inlet 6 and the high-temperature gas inlet 5 are located at two ends of the heat exchange device.

[0038] In the present invention, the high-efficiency heat exchange unit 22 is folded into a cylinder from a high-temperature-resistant and corrosion-resistant plate. The heat exchange area formed by the folding of the inner channel 23 and the outer channel 24 is an isosceles triangle, and the two side walls of the isosceles triangle are the heat exchange boundaries; the inner channel 23 is in communication with the high-temperature gas, and the outer channel 24 is in communication with the heat exchange gas.

[0039] In the present invention, the overflow channel 16 and the overflow hole 17 are located at both ends of the heat exchange device.

[0040] The working principle of a gas-gas heat exchange device provided by the present invention is as follows: when the gas-gas heat exchange device is working, the high-temperature gas of the external heat source enters the high-temperature gas pipeline 1 through the high-temperature gas inlet 5, and the partition 14 separates the high-temperature gas inlet cavity 10 and the high-temperature gas outlet cavity 12. The high-temperature gas must enter the heat exchange cavity 4 through the high-temperature gas inlet hole 11 from the high-temperature gas inlet cavity 10 to perform gas-gas heat exchange. Under the action of the external gas circulation heat absorption device, the heat exchange gas enters the heat exchange inlet cavity 2 through the heat exchange inlet 6, and enters the heat exchange cavity 4 uniformly through the heat exchange inlet tangential airway 20 and the spoiler 15. The heat exchange gas in the heat exchange cavity 4 enters the outer channel 24 formed by the high-efficiency heat exchange unit 22 and the inner wall of the shell 9 and the high-temperature gas in the inner channel 23 formed by the outer wall of the high-temperature gas pipeline 1 and the high-efficiency heat exchange unit 22 to perform heat exchange. The heat exchange gas in the outer channel 24, which has been heated by heat exchange, enters the heat exchange outlet cavity 3 through the outer channel 24, and enters the external gas circulation heat absorption device through the heat exchange outlet 7 through the air exchange outlet tangential air channel 21 to complete the heat exchange. The temperature of the high-temperature gas in the inner channel 23 is reduced after heat exchange, and it enters the high-temperature gas outlet cavity 12 through the high-temperature gas outlet hole 13, and is then discharged from the high-temperature gas outlet 8 to complete the heat exchange. In order to further isolate the high-temperature gas that may be caused by high-intensity vibration and brazing cracks at both ends of the heat exchange device end plate 19 and the high-efficiency heat exchange unit 22, the heat exchange device is designed with a high-temperature gas overflow channel 16 and an overflow hole 17 at both ends. The high-temperature gas overflowed due to cracks is discharged outside the machine through the overflow channel 16 and the overflow hole 17. The high-temperature gas exchanges heat with the heat exchange gas through the high-efficiency heat exchange unit 22 formed by folding, and the heat exchange area is large. At the same time, the heat exchange air inlet 6 and the high-temperature gas inlet 5 are located at both ends of the heat exchange device. The heat exchange gas and the high-temperature gas flow in opposite directions, and heat exchange is fully carried out, thereby improving the heat exchange efficiency.

[0041] Although the present invention has been described in detail above by means of general description, specific implementation methods and tests, it is obvious to those skilled in the art that some modifications or improvements may be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all fall within the scope of protection claimed by the present invention.

Claims

1. A gas-to-gas heat exchange device, It is characterized in that It comprises a high-temperature gas pipeline (1), a heat exchange air inlet cavity (2), a heat exchange air outlet cavity (3), and a heat exchange cavity (4); The high-temperature gas pipeline (1) is provided with a high-temperature gas inlet (5), a high-temperature gas inlet cavity (10), a high-temperature gas inlet hole (11), a high-temperature gas outlet cavity (12), a high-temperature gas outlet hole (13), a high-temperature gas outlet (8), and a partition (14); the heat exchange inlet cavity (2) is provided with a heat exchange inlet port (6), a heat exchange inlet tangential air passage (20), and a spoiler (15); the heat exchange outlet cavity (3) is provided with a heat exchange outlet port (7) and a heat exchange outlet tangential air passage (21); and a high-efficiency heat exchange unit (22) is provided in the heat exchange cavity (4); The high-temperature gas inlet (5) of the high-temperature gas pipeline (1) is connected to an external gas heat source; the high-temperature gas inlet hole (11) on the high-temperature gas inlet cavity (10) is connected to the heat exchange cavity (4) and communicates with one end of the inner channel (23) of the high-efficiency heat exchange unit (22); the high-temperature gas outlet hole (13) on the high-temperature gas outlet cavity (12) is communicated with the other end of the high-efficiency heat exchange unit (22); the partition plate (14) is fixed in the high-temperature gas pipeline (1) to separate the high-temperature gas inlet cavity (10) and the high-temperature gas outlet cavity (12); The high-efficiency heat exchange unit (22) comprises an inner channel (23) and an outer channel (24); wherein the inner channel (23) is formed by the inner wall of the high-efficiency heat exchange unit (22) and the outer wall of the high-temperature gas pipeline (1); and the outer channel (24) is formed by the outer wall of the high-efficiency heat exchange unit (22) and the inner wall of the outer shell (9).

2. The gas and gas heat exchange device according to claim 1, It is characterized in that The high-efficiency heat exchange unit (22) is a folded cylindrical structure folded into an isosceles triangle.

3. The gas and gas heat exchange device according to claim 1 or 2, It is characterized in that The high-efficiency heat exchange unit (22) is made by folding a high-temperature-resistant and corrosion-resistant plate material.

4. The gas and gas heat exchange device according to claim 1 or 2, It is characterized in that One end of the heat exchange inlet (6) of the heat exchange inlet chamber (2) is connected to the external gas circulation heat absorption device, and the other end is connected to the heat exchange inlet tangential air duct (20) of the heat exchange inlet chamber (2); the spoiler (15) is placed in the heat exchange inlet tangential air duct (20) and covers the outer channel (24) of the high-efficiency heat exchange unit (22); one end of the heat exchange outlet (7) of the heat exchange outlet chamber (3) is connected to the external gas circulation heat absorption device, and the other end is connected to the heat exchange outlet tangential air duct (21) of the heat exchange outlet chamber (3).

5. The gas and gas heat exchange device according to claim 3, It is characterized in that One end of the heat exchange inlet (6) of the heat exchange inlet chamber (2) is connected to the external gas circulation heat absorption device, and the other end is connected to the heat exchange inlet tangential air duct (20) of the heat exchange inlet chamber (2); the spoiler (15) is placed in the heat exchange inlet tangential air duct (20) and covers the outer channel (24) of the high-efficiency heat exchange unit (22); one end of the heat exchange outlet (7) of the heat exchange outlet chamber (3) is connected to the external gas circulation heat absorption device, and the other end is connected to the heat exchange outlet tangential air duct (21) of the heat exchange outlet chamber (3).

6. The gas and gas heat exchange device according to claim 1 or 2, It is characterized in that The heat exchange chamber (4) is surrounded by the outer wall of the high-temperature gas pipeline (1), the inner wall of the outer shell (9) and the end plate (19).

7. The gas and gas heat exchange device according to claim 4, It is characterized in that The heat exchange chamber (4) is surrounded by the outer wall of the high-temperature gas pipeline (1), the inner wall of the outer shell (9) and the end plate (19).

8. The gas and gas heat exchange device according to claim 1 or 2, It is characterized in that It also includes an overflow channel (16) and an overflow hole (17); The overflow channel (16) and the overflow hole (17) are located at two ends of the heat exchange device.

9. The gas and gas heat exchange device according to claim 4, It is characterized in that It also includes an overflow channel (16) and an overflow hole (17); The overflow channel (16) and the overflow hole (17) are located at two ends of the heat exchange device.

10. The gas and gas heat exchange device according to claim 6, It is characterized in that It also includes an overflow channel (16) and an overflow hole (17); The overflow channel (16) and the overflow hole (17) are located at two ends of the heat exchange device.

11. The gas and gas heat exchange device according to claim 1 or 2, It is characterized in that The heat exchange air inlet (6) and the high-temperature gas inlet (5) are arranged at two ends of the heat exchange device.

12. The gas and gas heat exchange device according to claim 4, It is characterized in that The heat exchange air inlet (6) and the high-temperature gas inlet (5) are arranged at two ends of the heat exchange device.

13. The gas and gas heat exchange device according to claim 8, It is characterized in that The heat exchange air inlet (6) and the high-temperature gas inlet (5) are arranged at two ends of the heat exchange device.

14. The gas and gas heat exchange device according to claim 2, It is characterized in that The high-efficiency heat exchange unit (22) is fixed by a support plate (18); The isosceles triangle folded shapes of the support plate (18) and the high-efficiency heat exchange unit (22) are completely consistent.

15. The gas and gas heat exchange device according to claim 4, It is characterized in that The high-efficiency heat exchange unit (22) is fixed by a support plate (18); The isosceles triangle folded shapes of the support plate (18) and the high-efficiency heat exchange unit (22) are completely consistent.

16. The gas and gas heat exchange device according to claim 8, It is characterized in that The high-efficiency heat exchange unit (22) is fixed by a support plate (18); The isosceles triangle folded shapes of the support plate (18) and the high-efficiency heat exchange unit (22) are completely consistent.

17. The gas and gas heat exchange device according to claim 14, It is characterized in that The high-efficiency heat exchange unit (22) is fixed by a support plate (18); The isosceles triangle folded shapes of the support plate (18) and the high-efficiency heat exchange unit (22) are completely consistent.

18. Application of the gas and gas heat exchange device according to any one of claims 1 to 17 in automobile heating, burner heating and civil fixed heating.

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