Waste heat recovery assembly of air compressor

Abstract

The invention discloses a waste heat recovery assembly of an air compressor, and relates to the technical field of waste heat recovery of air compressors. An air cavity is formed in the heat exchange tube, the heat exchange tube is arranged in the water tank, and the air cavity is provided with at least one air inlet and an air outlet; and the water cavity is formed in the heat exchange tube and is provided with at least one inlet end and one outlet end. The water cavity is formed in the heat exchange pipe, water heated by the heat exchange pipe can be fed into the water cavity to be secondarily heated, after hot air enters the heat exchange pipe through the air inlet, the heat exchange pipe is heated to primarily heat water in the water tank, and the primarily heated water enters the water cavity of the heat exchange pipe through the inlet end to be reheated; and the water heated twice is discharged out of the water tank from the outlet end of the water cavity, so that the water can be fully heated by hot air within a short time by arranging the two heating loops, and the waste heat recovery efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of waste heat recovery of air compressors, and in particular to a waste heat recovery component of an air compressor. Background Art

[0002] An air compressor is a device that can transmit gas and increase the pressure of gas, so it is often used in energy and power. The air compressor will generate excess heat in the process of producing high-pressure air. This excess heat can be recovered to reduce fuel consumption and avoid the air compressor waste heat being discharged to aggravate the greenhouse effect of the atmosphere and cause thermal pollution. Therefore, how to recycle and use this discharged heat energy is a very meaningful task.

[0003] Current technical problems: Most of the existing waste heat recovery devices use heat exchange tubes placed in cold water tanks, which are beneficial for the waste heat of hot air to heat the water. In order to improve the heat exchange rate, the heat exchange tubes are generally serpentine or spiral. However, since the contact time between water and the heat exchange tubes is still relatively short, the water inside the water tank heats up slowly, which will cause the waste heat to be fully exchanged with the water and then discharged from the pipe, resulting in heat waste. Therefore, it is necessary to design a new waste heat recovery component. Summary of the invention

[0004] The purpose of the present invention is to provide a waste heat recovery component for an air compressor to solve the technical problem raised by the above background technology that the waste heat recovery devices on the market currently cannot fully contact the waste heat of gas with water in a short period of time, resulting in low waste heat recovery efficiency.

[0005] To achieve the above object, the present invention provides the following technical solution: a waste heat recovery component for an air compressor, comprising:

[0006] A water tank provided with a water inlet pipe;

[0007] A heat exchange tube with an air cavity inside, the heat exchange tube is arranged in a water tank, and the air cavity has at least one air inlet and one air outlet;

[0008] A water cavity is opened in the heat exchange tube, and the water cavity has at least one inlet end and an outlet end. During operation, hot air enters the heat exchange tube through the air inlet to initially heat the water in the water tank. The initially heated water enters the water cavity through the inlet end to be secondary heated and then is discharged from the water tank from the outlet end.

[0009] As a preferred technical solution of the present invention, the waste heat recovery component also includes a filtering structure connected to the outlet end and used to filter water, and the filtering structure includes: a filter plate and a heating component for heating the filter plate by hot air.

[0010] As a preferred technical solution of the present invention, the filtering structure comprises: a filtering box provided with a water inlet and a water outlet, the water inlet is connected to the outlet, and the filtering plate is arranged in the filtering box.

[0011] As a preferred technical solution of the present invention, the heating component is a preheating tube arranged on the surface of the filter plate, and the preheating tube has at least one air inlet end and an air outlet end, and the air inlet end is connected to the air outlet of the air cavity.

[0012] As a preferred technical solution of the present invention, the waste heat recovery component further includes:

[0013] A drainage pipe connected to the water tank, wherein the drainage pipe is arranged at a position higher than the water inlet pipe;

[0014] A first water pipe having one end connected to the drain pipe, the other end of the first water pipe being connected to the entrance of the water cavity, the outlet of the water cavity being connected to one end of a second water pipe, the other end of the second water pipe being connected to the water inlet of the filter box.

[0015] As a preferred technical solution of the present invention, the air inlet is connected to one end of an air inlet pipe, the other end of the air inlet pipe is used to be connected to the hot gas discharge end of the air compressor, and the air outlet is connected to one end of an exhaust pipe, the other end of the exhaust pipe is connected to the air inlet end.

[0016] As a preferred technical solution of the present invention, there are multiple filter plates, and the multiple filter plates are arranged in an array in a filter box, and adjacent preheating tubes are connected in series through the air inlet end and the exhaust end.

[0017] As a preferred technical solution of the present invention, the outside of the heat exchange tube is connected with a first heating fin for increasing the contact area with water.

[0018] As a preferred technical solution of the present invention, a second heating fin is provided in the water chamber for increasing the contact area with water.

[0019] As a preferred technical solution of the present invention, the upper end of the water tank is open and provided with a cover, the surface of the cover is provided with a first countersunk hole, the first countersunk hole cooperates with a bolt hole provided on the surface of the water tank, bolts are provided in the first countersunk hole and the bolt hole, and a tripod is provided at the bottom of the water tank, and the tripod is provided with a second countersunk hole.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention opens a water cavity in the heat exchange tube, so that the water heated by the heat exchange tube can be sent into the water cavity for secondary heating. When the hot air enters the heat exchange tube through the air inlet, the heat exchange tube is heated to heat the water in the water tank for the first time. The water after the first heating enters the water cavity of the heat exchange tube through the inlet end for reheating. The water after twice heating is discharged from the water tank from the outlet end of the water cavity. Therefore, by setting up two heating circuits, the hot air can be used to fully heat the water in a short time, thereby improving the waste heat recovery efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the external three-dimensional structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the bottom three-dimensional structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the internal three-dimensional structure of the water tank of the present invention;

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of the heat exchange tube, the first heating fin and the first water delivery pipe of the present invention;

[0026] Figure 5 For the present invention Figure 4 The enlarged structural diagram at A in the middle;

[0027] Figure 6 It is a schematic diagram of the internal three-dimensional structure of the filter box of the present invention;

[0028] Figure 7 It is a schematic diagram of the three-dimensional structure of the filter plate and the preheating tube of the present invention.

[0029] In the figure: 1. water tank; 2. cover; 3. air inlet pipe; 4. heat exchange tube; 5. air cavity; 6. first heating fin; 7. water inlet pipe; 8. drain pipe; 9. first water pipe; 10. water cavity; 11. second heating fin; 12. second water pipe; 13. filter box; 14. filter plate; 15. water inlet; 16. drain outlet; 17. preheating tube; 18. air inlet end; 19. exhaust end; 20. exhaust pipe; 21. first countersunk hole; 22. bolt; 23. bolt hole; 24. tripod; 25. second countersunk hole. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. It should be understood that the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. To make the drawings concise, only the parts related to the invention are schematically shown in each figure, and they do not represent the actual structure of the product.

[0031] It should be further understood that the term "and / or" used in the present specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations. In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, and it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] See also Figure 1-7 The present invention provides a technical solution, a waste heat recovery component of an air compressor, comprising: a water tank 1 provided with a water inlet pipe 7; a heat exchange tube 4 with an air cavity 5 provided therein, the heat exchange tube 4 being provided in the water tank 1, the air cavity 5 having at least one air inlet and one air outlet; a water cavity 10 provided in the heat exchange tube 4, the water cavity 10 having at least one inlet end and one outlet end, when working, hot air enters the heat exchange tube 4 through the air inlet to heat the water in the water tank 1 for the first time, the water after the first heating enters the water cavity 10 through the inlet end to be heated for the second time, and then is discharged from the water tank 1 from the outlet end;

[0033] The above technical solution can make full use of hot air to heat water. When in use, the air inlet of the air cavity 5 is connected to the hot air discharge end of the air compressor, and the water inlet pipe 7 of the water tank 1 is connected to the water pump. The hot air enters the heat exchange tube 4 through the air inlet to heat the heat exchange tube 4. After the heat exchange tube 4 is heated, the temperature rises to heat the water in the water tank 1 for the first time. The water after the initial heating enters the water cavity 10 of the heat exchange tube 4 through the inlet end, so that the hot air is used to heat the water for the second time. The water after twice heating is discharged from the water tank 1 from the outlet end of the water cavity 10. Through the two heating circuits, the hot air can be used to fully heat the water in a short time.

[0034] like Figure 2 and Figure 6 As shown, in this embodiment, the waste heat recovery component also includes a filtering structure connected to the outlet end and used to filter water, the filtering structure includes: a filter plate 14 and a heating component for heating the filter plate 14 by hot air; a filter box 13 with a water inlet 15 and a drain port 16, the water inlet 15 is connected to the outlet end, and the filter plate 14 is arranged in the filter box 13;

[0035] like Figure 7As shown, in this embodiment, the heating component is a preheating tube 17 arranged on the surface of the filter plate 14, and the preheating tube 17 has at least one air inlet end 18 and an exhaust end 19, and the air inlet end 18 is connected to the air outlet of the air cavity 5; the air inlet is connected to one end of the air inlet pipe 3, and the other end of the air inlet pipe 3 is used to be connected to the hot gas discharge end of the air compressor, and the air outlet is connected to one end of the exhaust pipe 20, and the other end of the exhaust pipe 20 is connected to the air inlet end 18;

[0036] The above technical solution can be used to filter water. The hot air after heating the water will enter the air inlet end 18 through the air outlet of the air cavity 5 and the exhaust pipe 20. The hot air enters the preheating tube 17 through the air inlet end 18 to heat it. The preheating tube 17 heats the filter plate 14 to prevent the heat loss of the hot water due to the low temperature of the filter plate 14. Then, the water that has been heated for the second time is discharged into the filter box 13 through the outlet end of the water cavity 10. The filter plate 14 in the filter box 13 filters the water. The filtered water is discharged from the filter box 13 through the drain port 16 and enters the collection device for use.

[0037] like Figure 3 As shown, in this embodiment, the waste heat recovery component also includes: a drain pipe 8 connected to the water tank 1, and the setting position of the drain pipe 8 is higher than the water inlet pipe 7; a first water pipe 9 connected to the drain pipe 8 at one end, and the other end of the first water pipe 9 is connected to the entrance end of the water cavity 10, and the outlet end of the water cavity 10 is connected to one end of the second water pipe 12, and the other end of the second water pipe 12 is connected to the water inlet 15 of the filter box 13;

[0038] The above technical solution can ensure that the water flow can be fully heated by creating a height difference. When cold water enters the water tank 1 from the water inlet pipe 7, the liquid level will gradually rise as the water volume increases. When the liquid level exceeds the first water pipe 9, the water can enter the water cavity 10 of the heat exchange tube 4 through the first water pipe 9, which prolongs the contact time between the water and the heat exchange tube 4. After the water flow is discharged from the outlet end of the water cavity 10, it enters the filter box 13 through the second water pipe 12 for filtration.

[0039] like Figure 6 As shown, in this embodiment, there are multiple filter plates 14, and the multiple filter plates 14 are arranged in an array in the filter box 13, and adjacent preheating tubes 17 are connected in series through the air inlet end 18 and the exhaust end 19;

[0040] The use of the above technical solution can further improve the filtering effect. By providing a plurality of filter plates 14 , impurities in the water can be effectively removed to prevent the water from being polluted by dirt inside the water tank 1 .

[0041] like Figure 3 As shown, in this embodiment, the heat exchange tube 4 is externally connected with a first heating fin 6 for increasing the contact area with water;

[0042] like Figure 5 As shown, in this embodiment, a second heating fin 11 is provided in the water chamber 10 for increasing the contact area with water;

[0043] The adoption of the above technical solution can further improve the heating efficiency of water. By arranging dense first heating fins 6 on the outside of the heat exchange tube 4, the contact area between the heat exchange tube 4 and the water can be effectively increased, so that the water can be heated evenly and fully. Similarly, arranging dense second heating fins 11 in the water chamber 10 can also ensure that the hot air can heat the water evenly, thereby improving the utilization rate of waste heat.

[0044] like Figure 1 and Figure 3 As shown, in this embodiment, the upper end of the water tank 1 is open and provided with a cover 2, a first countersunk hole 21 is provided on the surface of the cover 2, the first countersunk hole 21 matches with a bolt hole 23 provided on the surface of the water tank 1, bolts 22 are provided in the first countersunk hole 21 and the bolt hole 23, a tripod 24 is provided at the bottom of the water tank 1, and a second countersunk hole 25 is provided on the tripod 24;

[0045] The above technical solution can facilitate the maintenance of the interior of the water tank 1. After being used for a period of time, there will be a large number of water grooves inside the water tank 1. The bolts 22 can be unscrewed by tools, so that the cover 2 can be removed from the water tank 1, which is conducive to cleaning the inner wall and heat exchange tube 4 in the water tank 1. A tripod 24 is provided at the bottom of the water tank 1, which can be conveniently installed on a work surface.

[0046] Working principle: When in use, first connect the air inlet pipe 3 to the hot air discharge end of the air compressor, connect the water inlet pipe 7 of the water tank 1 to the water pump, and the hot air enters the heat exchange tube 4 through the air inlet pipe 3 to heat the heat exchange tube 4. After the heat exchange tube 4 is heated, the temperature rises to heat the water in the water tank 1 for the first time. Since the dense first heating fins 6 are arranged on the outside of the heat exchange tube 4, the contact area between the heat exchange tube 4 and the water can be effectively increased, so that the water can be heated evenly and fully. The water after the initial heating enters the water cavity 10 of the heat exchange tube 4 through the drain pipe 8 and the first water delivery pipe 9, so that the hot air is used to heat the water for the second time. Since the dense second heating fins 11 are arranged in the water cavity 10, It is enough to ensure that the hot air can heat the water evenly. The water after being heated twice is discharged from the water tank 1 from the outlet end of the water cavity 10. The hot air after heating the water will enter the air inlet end 18 through the air outlet of the air cavity 5 and the exhaust pipe 20. The hot air enters the preheating pipe 17 through the air inlet end 18 to heat it. The preheating pipe 17 heats the filter plate 14 to prevent the heat loss of the hot water due to the low temperature of the filter plate 14. Then, the water after the secondary heating is discharged into the filter box 13 through the outlet end of the water cavity 10 and the second water pipe 12. The filter plate 14 in the filter box 13 filters the water. The filtered water is discharged from the filter box 13 through the drain port 16 and enters the collection device for use.

[0047] Thereby completing a series of tasks, the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0048] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A waste heat recovery component for an air compressor, comprising: A water tank (1) provided with a water inlet pipe (7); A heat exchange tube (4) having an air cavity (5) therein, the heat exchange tube (4) being arranged in a water tank (1), the air cavity (5) having at least one air inlet and one air outlet; Characterized in that, the waste heat recovery component also includes: A water cavity (10) is provided in the heat exchange tube (4), wherein the water cavity (10) has at least one inlet end and one outlet end. During operation, hot air enters the heat exchange tube (4) through the inlet end to initially heat the water in the water tank (1). The initially heated water enters the water cavity (10) through the inlet end to be heated for a second time and then is discharged from the water tank (1) through the outlet end.

2. The waste heat recovery assembly for an air compressor according to claim 1, characterized in that: The waste heat recovery component also includes a filtering structure connected to the outlet end and used for filtering water, wherein the filtering structure includes: a filtering plate (14) and a heating component used for heating the filtering plate (14) by hot air.

3. The waste heat recovery assembly for an air compressor according to claim 2, characterized in that: The filtering structure comprises: a filtering box (13) provided with a water inlet (15) and a water outlet (16), wherein the water inlet (15) is connected to an outlet end, and the filtering plate (14) is arranged in the filtering box (13).

4. The waste heat recovery assembly for an air compressor according to claim 3, characterized in that: The heating component is a preheating tube (17) arranged on the surface of the filter plate (14), and the preheating tube (17) has at least one air inlet end (18) and an air outlet end (19), and the air inlet end (18) is connected to the air outlet of the air cavity (5).

5. The waste heat recovery assembly for an air compressor according to claim 4, characterized in that: The waste heat recovery component also includes: a drainage pipe (8) connected to the water tank (1), wherein the drainage pipe (8) is arranged at a position higher than the water inlet pipe (7); A first water pipe (9) having one end connected to the drain pipe (8), the other end of the first water pipe (9) being connected to the inlet end of the water chamber (10), the outlet end of the water chamber (10) being connected to one end of a second water pipe (12), the other end of the second water pipe (12) being connected to the water inlet (15) of the filter box (13).

6. The waste heat recovery assembly for an air compressor according to claim 5, characterized in that: The air inlet is connected to one end of an air inlet pipe (3), the other end of the air inlet pipe (3) is used to be connected to the hot gas discharge end of the air compressor, and the air outlet is connected to one end of an exhaust pipe (20), the other end of the exhaust pipe (20) is connected to the air inlet end (18).

7. The waste heat recovery assembly for an air compressor according to claim 6, characterized in that: There are a plurality of filter plates (14), and the plurality of filter plates (14) are arranged in an array in the filter box (13), and adjacent preheating tubes (17) are connected in series via an air inlet end (18) and an air outlet end (19).

8. The waste heat recovery assembly for an air compressor according to any one of claims 1 to 7, characterized in that: The heat exchange tube (4) is externally connected to a first heating fin (6) for increasing the contact area with water.

9. The waste heat recovery assembly for an air compressor according to claim 8, characterized in that: The water chamber (10) is provided with a second heating fin (11) for increasing the contact area with water.

10. The waste heat recovery assembly for an air compressor according to claim 9, characterized in that: The upper end of the water tank (1) is open and provided with a cover (2); a first countersunk hole (21) is provided on the surface of the cover (2); the first countersunk hole (21) matches with a bolt hole (23) provided on the surface of the water tank (1); bolts (22) are provided in the first countersunk hole (21) and the bolt hole (23); a tripod (24) is provided at the bottom of the water tank (1); and a second countersunk hole (25) is provided on the tripod (24).

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