A heat exchange device

Abstract

This utility model discloses a heat exchange device, comprising: a heat exchange box, with an air inlet and an air outlet fixedly connected to both ends of the heat exchange box, and a second heat exchange unit installed in the middle of the air inlet; and a first heat exchange unit installed inside the heat exchange box for condensation and water removal, the first heat exchange unit including a second heat exchange tube and a water collection funnel fixed to the bottom of the heat exchange box. The beneficial effects of this utility model are: the water in the inlet pipe is cooled by a vortex tube cold air gun, and at the same time, the heat from its hot air end is transferred to the second heat exchange unit to heat the steam, effectively increasing the temperature difference between the steam and the second heat exchange tube; the temperature difference is a key factor affecting the heat exchange efficiency, thereby improving the heat exchange efficiency, accelerating the removal of moisture from the steam, realizing the efficient recovery and utilization of waste heat, and reducing energy waste; the water collection funnel cooperates with the water collection box to collect the condensed water; the water collection box is pre-poured with water that overflows the drain outlet, and the bottom of the water collection funnel is sealed to prevent steam leakage.

Description

Technical Field

[0001] This utility model relates to the field of waste heat recovery technology, specifically a heat exchange device. Background Technology

[0002] In production, used steam carries a certain amount of heat and moisture from condensation. If it is not effectively recovered and utilized, much of the heat will be directly released into the environment, leading to energy waste and increased greenhouse gas emissions. Therefore, it is necessary to recover waste heat from the steam through heat exchange using appropriate equipment. However, current equipment cannot effectively dehumidify the steam during the heat recovery process, resulting in the emitted steam containing a large amount of moisture. If directly released into the atmosphere, this moisture may carry dissolved chemicals, oil, or other pollutants. Utility Model Content

[0003] The purpose of this invention is to provide a heat exchange device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a heat exchange device, comprising:

[0005] A heat exchange box, with an air inlet and an air outlet fixedly connected to both ends of the heat exchange box, and a heat exchange unit installed in the middle of the air inlet;

[0006] A heat exchange unit is installed inside the heat exchange box for condensation and water removal. The heat exchange unit includes a second heat exchange tube and a water collection funnel fixed to the bottom of the heat exchange box. A water collection box is fixedly connected to the bottom of the water collection funnel, and a drain outlet communicating with the water collection box is opened at the bottom of the water collection funnel.

[0007] The water inlet pipe is fixed to one end of the heat exchange tube two. A vortex tube cold air gun for cooling the inner wall of the water inlet pipe is fixed to one end of the water inlet pipe. The hot air end of the vortex tube cold air gun is connected to the heat exchange tube two to increase the temperature difference between the steam and the heat exchange tube two.

[0008] Preferably, the heat exchange section includes multiple fins fixed to the middle of the air inlet, and an S-shaped heat exchange tube is installed in the middle of the fins. One end of the heat exchange tube is connected to the hot air end of the vortex tube cold air gun.

[0009] Preferably, the end of the second heat exchange tube opposite to the inlet pipe is fixedly connected to the outlet pipe, and both the inlet pipe and the outlet pipe are fixedly connected to the threaded pipe inside. The end of the first heat exchange tube opposite to the vortex tube cold air gun is connected to the threaded pipe inside the outlet pipe through the second connecting pipe, and the first connecting pipe is connected to the threaded pipe inside the inlet pipe.

[0010] Preferably, multiple fins are vertically fixed inside the heat exchange box, and the heat exchange tube has an S-shaped structure and is fixed in the middle of the fins.

[0011] Preferably, the bottom of the heat exchange box is provided with a drainage channel connected to the water receiving funnel, and an overflow pipe is fixedly connected to the middle of the water collection box, with the inlet of the overflow pipe being higher than the outlet of the drain.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: The water in the inlet pipe is cooled by a vortex tube cold air gun, while its hot air end heat is transferred to the second heat exchange section to heat the steam, effectively increasing the temperature difference between the steam and the second heat exchange tube. Temperature difference is a key factor affecting heat exchange efficiency; this improves heat exchange efficiency, accelerates the removal of moisture from the steam, achieves efficient recovery and utilization of waste heat, and reduces energy waste. The water funnel and water collection box work together to collect the condensed water. Water is pre-poured into the water collection box to overflow the drain outlet, and the bottom of the water funnel is sealed to prevent steam leakage. Simultaneously, an overflow pipe is installed; when the water level in the water collection box reaches the height of the overflow pipe inlet, the water is automatically discharged, avoiding the problem of excessively high water levels in the water collection box and ensuring stable operation of the device. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the air inlet structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the threaded pipe of this utility model;

[0016] Figure 4 This is a schematic diagram of the structure of fin two of this utility model;

[0017] Figure 5 This is a schematic diagram of the structure of the drainage outlet of this utility model.

[0018] In the diagram: 1. Heat exchange box; 2. Air inlet; 3. Air outlet; 4. Fin 1; 5. Heat exchange tube 1; 6. Water inlet pipe; 7. Vortex tube cold air gun; 8. Connecting pipe 1; 9. Threaded pipe; 10. Heat exchange tube 2; 11. Fin 2; 12. Water collection funnel; 13. Water collection box; 14. Overflow pipe; 15. Drain outlet; 16. Water outlet pipe; 17. Connecting pipe 2. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1 , 2 As shown in Figures 3, 4, and 5, this utility model provides a technical solution: a heat exchange device, comprising: a heat exchange box 1, with an air inlet 2 and an air outlet 3 fixedly connected to both ends of the heat exchange box 1, and a second heat exchange unit installed in the middle of the air inlet 2; the first heat exchange unit is installed inside the heat exchange box 1 for condensation and water removal, the first heat exchange unit includes a second heat exchange tube 10 and a water collection funnel 12 fixedly connected to the bottom of the heat exchange box 1, a water collection box 13 fixedly connected to the bottom of the water collection funnel 12, the water collection box 13 is pre-poured with water that overflows the drain outlet 15, and the bottom of the water collection funnel 12 is provided with a drain outlet 15 communicating with the water collection box 13; an inlet pipe 6 is fixedly connected to one end of the second heat exchange tube 10, and a vortex tube cold air gun 7 for cooling the inner wall of the inlet pipe 6 is fixedly connected to one end of the inlet pipe 6, the hot air end of the vortex tube cold air gun 7 is connected to the second heat exchange unit to increase the temperature difference between the steam and the second heat exchange tube 10.

[0021] It should be noted that in this embodiment, cold water is connected to the inlet of the water inlet pipe 6 via a water pump, and the high-pressure air duct of the workshop is connected to the air inlet of the vortex tube cold air gun 7. The cold end of the vortex tube cold air gun 7 is inserted into the water inlet pipe 6, and the water inside the water inlet pipe 6 is cooled by the low temperature of the vortex tube cold air gun 7. The water enters the heat exchange tube 10 through the water inlet pipe 6 to cool and remove water from the hot steam inside the heat exchange box 1. The hot air end of the vortex tube cold air gun 7 delivers heat to the second heat exchange section. Since the second heat exchange section is located inside the air inlet 2, the steam enters through the air inlet 2 and comes into contact with the second heat exchange section to heat the steam. By heating the steam and cooling the water inside the second heat exchange tube 10, the temperature difference between the steam and the heat exchanger is increased, which can effectively improve the heat exchange efficiency and accelerate the removal of water. The water enters the water collection box 13 through the water receiving funnel 12 for collection.

[0022] In one embodiment, the heat exchange section includes a plurality of fins 4 fixed to the middle of the air inlet 2, and an S-shaped heat exchange tube 5 is installed in the middle of the fins 4. One end of the heat exchange tube 5 is connected to the hot air end of the vortex tube cold air gun 7.

[0023] It should be noted that in this embodiment, the hot air from the vortex tube cold air gun 7 enters the heat exchange tube 5 through the connecting pipe 8. The heat exchange tube 5 heats the fins 4 through heat transfer. When the steam comes into contact with the fins 4 and the air inlet 2, the steam can be heated.

[0024] In one embodiment, the end of heat exchange tube 2 10 away from the water inlet pipe 6 is fixedly connected to the water outlet pipe 16. Both the water inlet pipe 6 and the water outlet pipe 16 are fixedly connected to the threaded pipe 9. The end of heat exchange tube 1 5 away from the vortex tube cold air gun 7 is connected to the threaded pipe 9 inside the water outlet pipe 16 through the connecting pipe 2 17. The connecting pipe 1 8 is connected to the threaded pipe 9 inside the water inlet pipe 6.

[0025] It should be noted that in this embodiment, the low temperature of the vortex tube cold air gun 7 is delivered to the water inside the inlet pipe 6 through the threaded tube 9. One end of the threaded tube 9 inside the inlet pipe 6 extends into the heat exchange box 1, and the air for cooling the water can enter the heat exchange box 1 for cooling inside the heat exchange box 1. The water inside the inlet pipe 6 flows in the second heat exchange tube 10, exchanges heat with the steam through the second fin 11, and then enters the outlet pipe 16 for discharge. During this period, the hot air inside the first heat exchange tube 5 enters the outlet pipe 16 through the second connecting pipe 17, exchanges heat with the water through the threaded tube 9 inside the outlet pipe 16, and then exits the outlet pipe 16 through the threaded tube 9.

[0026] In one embodiment, multiple fins 11 are vertically fixed inside the heat exchange box 1, and the heat exchange tube 10 has an S-shaped structure and is fixed in the middle of the fins 11. A drainage channel connected to the water funnel 12 is provided at the bottom of the heat exchange box 1, and an overflow pipe 14 is fixed in the middle of the water collection box 13. The height of the water inlet of the overflow pipe 14 is higher than the height of the drain outlet 15.

[0027] It should be noted that in this embodiment, the moisture from the steam comes into contact with the second fin 11 and is liquefied into water under the action of low temperature. The water flows along the second fin 11 into the water collection funnel 12. Thus, the water collection box 13 is pre-filled with water. The bottom of the water collection funnel 12 is sealed by the water. When the water inside the water collection box 13 reaches the inlet of the overflow pipe 14, the water inside the water collection box 13 is discharged through the overflow pipe 14.

[0028] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat exchange device, characterized in that: include: A heat exchange box (1) has an air inlet (2) and an air outlet (3) fixedly connected to its two ends respectively. A heat exchange part is installed in the middle of the air inlet (2). A heat exchange unit is installed inside the heat exchange box (1) for condensation and water removal. The heat exchange unit includes a heat exchange tube (10) and a water collection funnel (12) fixed to the bottom of the heat exchange box (1). A water collection box (13) is fixedly connected to the bottom of the water collection funnel (12). A drain outlet (15) communicating with the water collection box (13) is opened at the bottom of the water collection funnel (12). Water inlet pipe (6) is fixed to one end of heat exchange tube two (10). One end of the water inlet pipe (6) is fixed to a vortex tube cold air gun (7) for cooling the inner wall of the water inlet pipe (6). The hot air end of the vortex tube cold air gun (7) is connected to the heat exchange tube two to increase the temperature difference between the steam and the heat exchange tube two (10).

2. The heat exchange device according to claim 1, characterized in that: The heat exchange section includes multiple fins (4) fixed to the middle of the air inlet (2). An S-shaped heat exchange tube (5) is installed in the middle of the fins (4). One end of the heat exchange tube (5) is connected to the hot air end of the vortex tube cold air gun (7).

3. A heat exchange device according to claim 2, characterized in that: The end of the heat exchange tube 2 (10) away from the water inlet pipe (6) is fixedly connected to the water outlet pipe (16). Both the water inlet pipe (6) and the water outlet pipe (16) are fixedly connected to the threaded pipe (9). The end of the heat exchange tube 1 (5) away from the vortex tube cold air gun (7) is connected to the threaded pipe (9) inside the water outlet pipe (16) through the connecting pipe 2 (17). The connecting pipe 1 (8) is connected to the threaded pipe (9) inside the water inlet pipe (6).

4. A heat exchange device according to claim 1, characterized in that: The heat exchange box (1) has multiple fins (11) vertically fixed inside, and the heat exchange tube (10) has an S-shaped structure and is fixed in the middle of the fins (11).

5. A heat exchange device according to claim 1, characterized in that: The bottom of the heat exchange box (1) is provided with a drainage channel connected to the water receiving funnel (12), and the middle of the water collection box (13) is fixed with an overflow pipe (14), the height of the water inlet of the overflow pipe (14) is higher than the height of the drain outlet (15).

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