A spiral heat exchanger

Abstract

This application relates to a spiral heat exchanger, which includes a spiral tube body. The spiral tube body includes an inner wall and an outer wall. A cavity is provided on the outer surface at the center of the spiral tube body, and a heat exchange chamber is provided on the inner surface of the spiral tube body. A first spiral tube is provided on the inner surface of the spiral tube body, and its outer surface is fixedly connected to the inner wall. A second spiral tube is provided on the inner surface of the spiral tube body, and its outer surface is fixedly connected to the outer wall. The heat exchange chamber is formed by the first and second spiral tubes pressing against each other. The first spiral tube contacts the inner wall, and the second spiral tube contacts the outer wall, thus forming a spiral channel in the heat exchange chamber. The position of the spiral tube body can be adjusted as needed to improve applicability. The heat exchange efficiency is relatively high when the refrigerant in the heat exchange chamber exchanges heat with the liquid spiraling downward through the spiral channel of the first and second spiral tubes.

Description

Technical Field

[0001] This application relates to the technical field of heat exchangers, and in particular to a spiral heat exchanger. Background Technology

[0002] Spiral heat exchangers generally refer to spiral threaded tube heat exchangers. Spiral threaded tube heat exchangers are a new type of high-efficiency and energy-saving heat exchange equipment introduced in recent years. It has a high heat transfer coefficient, and the volume of the heat exchanger of the same power is 1 / 3 of that of the traditional shell and tube heat exchanger. The heat transfer coefficient is 50% higher than that of the traditional shell and tube heat exchanger. It has a compact structure, small size, and is easy to install and transport. It requires less refrigerant, only 30%-40% of that required for shell and tube heat exchangers.

[0003] Traditional spiral heat exchange tubes have only a unidirectional spiral inside the heat exchange element, which results in low heat exchange efficiency. Summary of the Invention

[0004] In order to increase the heat exchange area and heat exchange efficiency of the spiral heat exchange tube, this application provides a spiral heat exchanger.

[0005] This application provides a spiral heat exchanger, which adopts the following technical solution: A spiral heat exchanger. The spiral tube body includes an inner wall and an outer wall. A cavity is provided on the outer surface at the center of the spiral tube body. A heat exchange cavity is provided on the inner surface of the spiral tube body. A first spiral tube is provided on the inner surface of the spiral tube body, and the outer surface of the first spiral tube is fixedly connected to the inner wall. A second spiral tube is provided on the inner surface of the spiral tube body, and the outer surface of the second spiral tube is fixedly connected to the outer wall.

[0006] By adopting the above technical solution, a cavity is opened in the middle of the spiral tube body, making the cross-section of the spiral tube body annular. The inner and outer rings are respectively the inner wall and the outer wall. The heat exchange chamber inside the space is pressed together by the first spiral tube and the second spiral tube. The first spiral tube is in contact with the inner wall, and the second spiral tube is in contact with the outer wall. Thus, the first spiral tube and the second spiral tube form a spiral channel in the heat exchange chamber. The position of the spiral tube body can be adjusted as needed, thereby improving applicability. The heat exchange efficiency is relatively high when the refrigerant in the heat exchange chamber exchanges heat with the liquid spiraling down through the spiral channel of the first spiral tube and the second spiral tube.

[0007] In a preferred embodiment, an inlet pipe is welded to the outer surface of the upper end of the spiral tube body, the outer surface of the upper end of the first spiral tube is welded to the inlet pipe, and the outer surface of the upper end of the second spiral tube is welded to the inlet pipe.

[0008] By adopting the above technical solution, the liquid that needs to be heated flows from top to bottom and spirals inside the spiral tube, and then enters the device through the inlet pipe.

[0009] In a preferred embodiment, a liquid outlet pipe is welded to the outer surface of the lower end of the spiral tube body, the outer surface of the lower end of the first spiral tube is welded to the liquid outlet pipe, and the outer surface of the lower end of the second spiral tube is welded to the liquid outlet pipe.

[0010] By adopting the above technical solution, the liquid that needs to be heat exchanged flows from top to bottom and spirals inside the spiral tube, and is then discharged to the outside of the device through the outlet pipe to complete the heat exchange.

[0011] In a preferred embodiment, a refrigerant outlet pipe is welded to the outer surface of the upper end of the spiral tube body corresponding to the heat exchange cavity.

[0012] By adopting the above technical solution, the refrigerant moves spirally from bottom to top in the spiral channel, and the cooling medium for heat exchange is discharged from the refrigerant outlet pipe.

[0013] In a preferred embodiment, a refrigerant inlet pipe is welded to the outer surface of the lower end of the spiral tube body corresponding to the heat exchange cavity.

[0014] By adopting the above technical solution, the refrigerant moves spirally from bottom to top in the spiral channel, and the cooling medium for heat exchange enters the heat exchange chamber through the refrigerant inlet pipe and continuously exchanges heat through spiral contact.

[0015] In a preferred embodiment, an upper cover plate is provided on the upper surface of the spiral tube body, and a lower support plate is provided on the lower surface of the spiral tube body.

[0016] By adopting the above technical solutions, the upper cover plate ensures the overall sealing of the spiral tube body, the upper end is strengthened to increase durability, and the lower support plate ensures the stability of the device.

[0017] In a preferred embodiment, the inner surface of the lower support plate is provided with a support leg, and the outer surface of the support leg is provided with a fixing hole.

[0018] By adopting the above technical solution, the length of the support leg in the vertical direction can be varied. Specifically, it can be a first block connected to the lower support plate, a second block sliding on the first block, and a horizontal block connected to the second block. After the position of the second block relative to the position of the first block is determined, that is, after the height position of the device is determined, the second block is fixed to the first block using a fixing component. The horizontal block and the vertical block form an L-shape, and the fixing holes facilitate external fixing, thus completing the installation of the device.

[0019] In summary, this application includes the following beneficial technical effects: A cavity is opened in the middle of the spiral tube body, making the cross-section of the spiral tube body annular. The inner and outer rings are respectively the inner wall and the outer wall. The heat exchange chamber inside is pressed together by the first spiral tube and the second spiral tube. The first spiral tube is in contact with the inner wall, and the second spiral tube is in contact with the outer wall. Thus, the first spiral tube and the second spiral tube form a spiral channel in the heat exchange chamber. The position of the spiral tube body can be adjusted as needed to improve applicability. The heat exchange efficiency is relatively high when the refrigerant in the heat exchange chamber exchanges heat with the liquid spiraling down through the spiral channel of the first spiral tube and the second spiral tube. Attached Figure Description

[0020] Figure 1 This is a front view of the overall shape of the device in this application; Figure 2 This is a side view of the overall shape of the device in this application; Figure 3 This is a bottom view of the overall shape of the device in this application; Figure 4 This is a cross-sectional schematic diagram of the internal structure of the device in this application.

[0021] Explanation of reference numerals in the attached drawings: 1. Spiral tube body; 2. Cavity; 3. Heat exchange chamber; 4. First spiral tube; 5. Second spiral tube; 6. Inner wall; 7. Outer wall; 8. Liquid inlet pipe; 9. Liquid outlet pipe; 10. Refrigerant outlet pipe; 11. Refrigerant inlet pipe; 12. Upper cover plate; 13. Lower support plate; 14. Support leg; 15. Fixing hole. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0023] See Figure 1-4 A spiral heat exchanger. The spiral tube body 1 includes an inner wall 6 and an outer wall 7. A cavity 2 is provided on the outer surface at the center of the spiral tube body 1. A heat exchange cavity 3 is provided on the inner surface of the spiral tube body 1. A first spiral tube 4 is provided on the inner surface of the spiral tube body 1. The outer surface of the first spiral tube 4 is fixedly connected to the inner wall 6. A second spiral tube 5 is provided on the inner surface of the spiral tube body 1. The outer surface of the second spiral tube 5 is fixedly connected to the outer wall 7.

[0024] A cavity is provided in the middle of the spiral tube body 1, making the cross-section of the spiral tube body 1 annular. The inner and outer rings are respectively the inner wall 6 and the outer wall 7. The heat exchange chamber 3 inside the space is pressed together by the first spiral tube 4 and the second spiral tube 5. The first spiral tube 4 is in contact with the inner wall 6, and the second spiral tube 5 is in contact with the outer wall 7. Thus, the first spiral tube 4 and the second spiral tube 5 form a spiral channel in the heat exchange chamber 3. The position of the spiral tube body 1 can be adjusted as needed to improve its applicability. The heat exchange efficiency is relatively high when the refrigerant in the heat exchange chamber 3 exchanges heat with the liquid spiraling down through the spiral channel of the first spiral tube 4 and the second spiral tube 5.

[0025] See Figure 1-4 The upper outer surface of the spiral tube body 1 is welded with an inlet pipe 8, the upper outer surface of the first spiral tube 4 is welded to the inlet pipe 8, and the upper outer surface of the second spiral tube 5 is welded to the inlet pipe 8.

[0026] The liquid that needs to be heated flows from top to bottom and spirals inside the spiral tube, and then enters the device through the inlet pipe 8.

[0027] See Figure 1-4 The outer surface of the lower end of the spiral tube body 1 is welded with a liquid outlet pipe 9, the outer surface of the lower end of the first spiral tube 4 is welded to the liquid outlet pipe 9, and the outer surface of the lower end of the second spiral tube 5 is welded to the liquid outlet pipe 9.

[0028] The liquid that needs to be heated flows from top to bottom and spirals inside the spiral tube, and is then discharged to the outside of the device through the outlet pipe 9 to complete the heat exchange.

[0029] See Figure 1-4 A refrigerant outlet pipe 10 is welded to the outer surface of the upper end of the spiral tube body 1, corresponding to the heat exchange cavity 3.

[0030] The refrigerant moves spirally from bottom to top within the spiral channel, and the cooling medium for heat exchange is discharged from the refrigerant outlet pipe 10.

[0031] See Figure 1-4 A refrigerant inlet pipe 11 is welded to the outer surface of the lower end of the spiral tube body 1, corresponding to the heat exchange cavity 3.

[0032] The refrigerant moves spirally from bottom to top in the spiral channel, and the cooling medium for heat exchange enters the heat exchange chamber 3 through the refrigerant inlet pipe 11 and undergoes continuous spiral contact for heat exchange.

[0033] See Figure 1-4 The upper surface of the spiral tube body 1 is provided with an upper cover plate 12, and the lower surface of the spiral tube body 1 is provided with a lower support plate 13.

[0034] The upper cover plate 12 ensures the overall sealing of the spiral tube body 1 and increases durability through the physical properties of the upper end, while the lower support plate 13 ensures the stability of the device.

[0035] See Figure 1-4 The lower support plate 13 has a support leg 14 on its inner surface and a fixing hole 15 on its outer surface.

[0036] The length of the support leg 14 in the vertical direction can be varied. Specifically, it can be a first block connected to the lower support plate 13, a second block sliding on the first block, and a horizontal block connected to the second block. After the position of the second block relative to the position of the first block is determined, that is, after the height position of the device is determined, the second block is fixed to the first block using a fixing component. The horizontal block and the vertical block form an L-shape. The fixing hole 15 facilitates external fixing, thus completing the installation of the device.

[0037] The implementation principle of the embodiments of the subject matter of this application is as follows: A cavity is provided in the middle of the spiral tube body 1, making the cross-section of the spiral tube body 1 annular. The inner and outer rings are respectively the inner wall 6 and the outer wall 7. The internal heat exchange chamber 3 is pressed together by the first spiral tube 4 and the second spiral tube 5. The first spiral tube 4 is in contact with the inner wall 6, and the second spiral tube 5 is in contact with the outer wall 7. Thus, the first spiral tube 4 and the second spiral tube 5 form a spiral channel in the heat exchange chamber 3. The position of the spiral tube body 1 can be adjusted as needed to improve applicability. The liquid to be heat exchanged flows from top to bottom and spirals inside the spiral tube. It then enters the device through the inlet pipe 8 and is led out of the device through the outlet pipe 9 to complete the heat exchange. The refrigerant moves spirally from bottom to top in the spiral channel. The cooling medium for heat exchange enters the heat exchange chamber 3 through the refrigerant inlet pipe 11 and undergoes continuous spiral contact for heat exchange. It is led out through the refrigerant outlet pipe 10.

[0038] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A spiral heat exchanger, comprising a spiral tube body (1), characterized in that: The spiral tube body (1) includes an inner wall (6) and an outer wall (7). A cavity (2) is provided on the outer surface at the center of the spiral tube body (1). A heat exchange cavity (3) is provided on the inner surface of the spiral tube body (1). A first spiral tube (4) is provided on the inner surface of the spiral tube body (1). The outer surface of the first spiral tube (4) is fixedly connected to the inner wall (6). A second spiral tube (5) is provided on the inner surface of the spiral tube body (1). The outer surface of the second spiral tube (5) is fixedly connected to the outer wall (7).

2. A spiral heat exchanger according to claim 1, characterized in that: The upper outer surface of the spiral tube body (1) is welded with an inlet pipe (8), the upper outer surface of the first spiral tube (4) is welded to the inlet pipe (8), and the upper outer surface of the second spiral tube (5) is welded to the inlet pipe (8).

3. A spiral heat exchanger according to claim 1, characterized in that: The lower outer surface of the spiral tube body (1) is welded with a liquid outlet pipe (9), the lower outer surface of the first spiral tube (4) is welded to the liquid outlet pipe (9), and the lower outer surface of the second spiral tube (5) is welded to the liquid outlet pipe (9).

4. A spiral heat exchanger according to claim 1, characterized in that: The upper outer surface of the spiral tube body (1) is welded with a refrigerant outlet pipe (10) corresponding to the heat exchange cavity (3).

5. A spiral heat exchanger according to claim 1, characterized in that: The lower outer surface of the spiral tube body (1) is welded with a refrigerant inlet pipe (11) corresponding to the heat exchange cavity (3).

6. A spiral heat exchanger according to claim 1, characterized in that: The upper surface of the spiral tube body (1) is provided with an upper cover plate (12), and the lower surface of the spiral tube body (1) is provided with a lower support plate (13).

7. A spiral heat exchanger according to claim 6, characterized in that: The lower support plate (13) has a support foot (14) on its inner surface and a fixing hole (15) on its outer surface.

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