High-efficiency motor home exhaust pipe waste heat recovery device

Abstract

The utility model discloses a high-efficiency motor home exhaust pipe waste heat recovery device, which relates to the technical field of exhaust pipe heat recovery, and specifically comprises a tubular supporting part, the supporting part is arranged on an exhaust pipe, and second heat conduction pipes which are arranged in a bending manner are arranged in the supporting part; the two ends of the second heat conduction pipe extend out of the supporting part and are connected to the first heat conduction pipe. Heat-conducting media are arranged in the first heat-conducting pipe and the second heat-conducting pipe. During use, the two sealing shells are arranged on the exhaust pipe, then the two sealing shells are clamped on the exhaust pipe and then fastened through the hoops, heat of the exhaust pipe is transmitted into the second heat conduction pipe, and the heat conduction medium is driven by the circulation mechanism to circulate in the first heat conduction pipe and the second heat conduction pipe in sequence. And the heat-conducting medium circulates heat in contact with the second heat-conducting pipe into the first heat-conducting pipe, so that the heat of the exhaust pipe is recovered.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust pipe heat recovery, in particular to a high-efficiency waste heat recovery device for an exhaust pipe of a recreational vehicle. Background Art

[0002] With people's pursuit of convenient life and love of free travel, RV travel is becoming more and more popular. During the journey, the RV is the area where the owner rests and lives. Daily food, clothing, housing and transportation can be carried out in the car, and bathing water is often heated by electricity.

[0003] The temperature of a car's exhaust pipe typically ranges from 30°C to 120°C, and can reach even higher temperatures during high-speed driving or rapid acceleration. For RVs, the water used in the vehicle must be heated electrically. However, RVs have limited electrical energy storage, and heating water consumes significant power. Existing water heaters cannot be integrated with the exhaust pipe, resulting in wasted heat unless it is recovered. To address this issue, we propose a highly efficient waste heat recovery device for RV exhaust pipes. Utility Model Content

[0004] In response to the deficiency that the heat of the existing RV exhaust pipe cannot be recovered, the utility model provides a high-efficiency RV exhaust pipe waste heat recovery device, which has the advantage of introducing the heat on the exhaust pipe into the vehicle through a heat-conducting medium, solving the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a high-efficiency RV exhaust pipe waste heat recovery device, comprising a tubular support portion, the support portion being arranged on the exhaust pipe, and a second heat conducting pipe arranged in a curved manner being provided inside the support portion;

[0006] Both ends of the second heat conducting pipe extend out of the supporting portion, and both ends of the second heat conducting pipe are connected to the first heat conducting pipe;

[0007] Heat conducting medium is provided in the first heat conducting pipe and the second heat conducting pipe, and a circulation mechanism is installed on the first heat conducting pipe. Driven by the circulation mechanism, the heat conducting medium circulates in the first heat conducting pipe and the second heat conducting pipe in sequence.

[0008] Preferably, the circulation mechanism includes a liquid storage tank for storing heat transfer medium, the liquid storage tank is connected to the inlet of the circulation pump through a pipeline, and the outlet of the circulation pump and the liquid storage tank are respectively connected to the first heat transfer pipe.

[0009] Preferably, the support portion includes two sealed shells, which are spliced ​​together to form a tubular structure, the second heat conducting pipe is bent and arranged in each sealed shell, and the two sealed shells are fastened by a clamp.

[0010] Preferably, a heat insulation layer is provided in the sealed shell, and the second heat conducting pipe is arranged on the surface of the heat insulation layer.

[0011] Preferably, a connecting pipe is installed on the exhaust pipe, the support part is sleeved on the connecting pipe, and limiting flanges are provided at both ends of the connecting pipe to limit the two ends of the support part, and the second heat conducting pipe contacts the surface of the connecting pipe.

[0012] Preferably, both ends of the connecting pipe are connected to the exhaust pipe via flanges respectively.

[0013] Preferably, the second heat-conducting pipe in each heat-insulating layer passes through the sealed shell and is connected to the first heat-conducting pipe.

[0014] Preferably, the first heat conducting pipe is provided with a heat exchange portion arranged in a curved manner.

[0015] Preferably, the heat exchange part is arranged in the water tank.

[0016] Compared with the prior art, the present invention, when in use, places two sealed shells on the exhaust pipe, then clamps the two sealed shells on the exhaust pipe and fastens them with a clamp, the heat of the exhaust pipe is transferred to the second heat conducting pipe, driven by the circulation mechanism, the heat conducting medium circulates in the first heat conducting pipe and the second heat conducting pipe in sequence, and the heat conducting medium circulates the heat contacted by the second heat conducting pipe to the first heat conducting pipe, thereby recovering the heat of the exhaust pipe; specifically, the heat exchange part is arranged in the water tank, the heat exchange part can heat the water tank, the operation is simple, and the use is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 .

[0018] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 .

[0019] Figure 3 The internal structure of the utility model is shown in FIG. Figure 1 .

[0020] Figure 4 The internal structure of the utility model is shown in FIG. Figure 2 .

[0021] Figure 5 This is a structural diagram of the sealed housing of the utility model.

[0022] Figure 6 This is a schematic structural diagram of the utility model for heating inside a vehicle.

[0023] Figure 7 This is a structural diagram of the utility model after being installed in a water heater.

[0024] In the figure: 1. Sealing shell; 2. Limiting flange; 3. Clamp; 4. Circulation pump; 5. Liquid storage tank; 6. First heat conduction pipe; 7. Second heat conduction pipe; 8. Water tank; 9. Insulation layer; 10. Axial fan; 11. Bellows; 12. Connecting pipe; 13. Heat exchange part. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figures 1 to 5 The utility model provides a technical solution: a high-efficiency RV exhaust pipe waste heat recovery device, including a tubular support portion, such as Figure 1 and Figure 5 As shown, the support portion includes two sealed shells 1, which are spliced ​​to form a tubular structure. A heat insulation layer 9 is provided inside the sealed shell 1. The heat insulation layer 9 is an insulating ceramic plate, an insulating brick or an insulating aerogel plate, etc.

[0027] The present application also includes a second heat conducting pipe 7, which is bent and arranged in each sealed shell 1. Specifically, the second heat conducting pipe 7 is arranged on the surface of the thermal insulation layer 9, and the second heat conducting pipe 7 is arranged in an "S" shape. In actual use, the two sealed shells 1 are placed on the exhaust pipe, and then the two sealed shells 1 are clamped on the exhaust pipe and fastened by the clamp 3, so that the sealed shells can be firmly fixed on the exhaust pipe.

[0028] like Figure 2 As shown, both ends of the second heat-conducting pipe 7 extend to the outside of the supporting portion, and both ends of the second heat-conducting pipe 7 are connected to the first heat-conducting pipe 6. A heat-conducting medium is provided in the first heat-conducting pipe 6 and the second heat-conducting pipe 7, and a circulation mechanism is installed on the first heat-conducting pipe 6. The circulation mechanism includes a liquid storage tank 5 for storing the heat-conducting medium. The liquid storage tank 5 is connected to the inlet of the circulation pump 4 through a pipeline. The liquid storage tank 5 and the circulation pump 4 are both arranged in the vehicle. The outlet of the circulation pump 4 and the liquid storage tank 5 are respectively connected to the first heat-conducting pipe 6. Therefore, driven by the circulation mechanism, the heat-conducting medium circulates in the first heat-conducting pipe 6 and the second heat-conducting pipe 7 in turn, that is, the heat of the exhaust pipe is transferred to the second heat-conducting pipe 7, and the heat-conducting medium circulates the heat contacted by the second heat-conducting pipe 7 to the first heat-conducting pipe 6, and the first heat-conducting pipe 6 is arranged in the vehicle body, thereby transferring the heat of the exhaust pipe to the vehicle.

[0029] It should be noted that a drain port (not numbered in the figure) is provided at the bottom of the liquid storage tank 5, which is sealed by bolts. A sealing cover (not numbered in the figure) is threadedly connected to the top of the liquid storage tank 5 to facilitate the addition and replacement of the heat transfer medium. The heat transfer medium here is heat transfer oil, antifreeze, etc.

[0030] In order to facilitate the disassembly and installation of the waste heat recovery device, the present application also proposes a connecting pipe 12, which is a part of the exhaust pipe, that is, the connecting pipe 12 is installed on the exhaust pipe through a flange, and the support part is sleeved on the connecting pipe 12. Limiting flanges 2 are also provided at both ends of the connecting pipe 12 to limit the two ends of the support part. When the sealed shell 1 is stuck between the limiting flanges 2, the second heat conduction pipe 7 contacts the surface of the connecting pipe 12.

[0031] Because there are two sealed shells 1, each of them is provided with a second heat pipe 7, such as Figure 2 and Figure 3 As shown, the second heat-conducting pipe 7 in each heat-insulating layer 9 passes through the sealed shell 1 and is connected to the first heat-conducting pipe 6 .

[0032] In order to make the first heat pipe 6 perform heat exchange better, Figure 1 As shown, a bent heat exchange portion 13 is provided on the first heat pipe 6, and the heat exchange portion 13 is formed by bending the first heat pipe 6; the first heat pipe 6 and the second heat pipe 7 are copper pipes, steel pipes or aluminum alloy pipes, or other heat pipes.

[0033] like Figure 6 and Figure 7 As shown, when the RV exhaust pipe waste heat recovery device is in use, it can be divided into at least the following two situations:

[0034] 1. The waste heat recovery device heats the interior of the vehicle. A heat exchange unit 13 is disposed within a wind box 11, which is hung on the inner wall of the vehicle. An axial flow fan 10 is installed on the side of the wind box 11 close to the inner wall of the vehicle. Ventilation holes are provided on the top and side of the wind box 11 away from the inner wall of the vehicle. When the axial flow fan 10 rotates, the airflow is heated by passing through the heat exchange unit 13. Finally, the heated air is blown into the vehicle from the vents at the front of the wind box 11, thereby heating the vehicle interior.

[0035] 2. The waste heat recovery device is placed in the water tank 8. The heat exchange unit 13 can heat the water tank 8 to provide hot water for the vehicle. The water tank 8 here can be a commercially available electric water heater or electric water tank. In the above two working modes, the circulation pump can be stopped when not in use. The operation is simple and convenient.

[0036] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention. The terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In addition, unless otherwise expressly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections, indirect connections through an intermediate medium, or internal connections between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Furthermore, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0037] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency RV exhaust pipe waste heat recovery device, characterized in that: It comprises a tubular support portion, which is arranged on the exhaust pipe, and a second heat conducting pipe (7) arranged in a curved manner is arranged inside the support portion; Both ends of the second heat conducting pipe (7) extend outside the support portion, and both ends of the second heat conducting pipe (7) are connected to the first heat conducting pipe (6); A heat conducting medium is provided in the first heat conducting pipe (6) and the second heat conducting pipe (7), and a circulation mechanism is installed on the first heat conducting pipe (6). Driven by the circulation mechanism, the heat conducting medium circulates in the first heat conducting pipe (6) and the second heat conducting pipe (7) in sequence.

2. The high-efficiency RV exhaust pipe waste heat recovery device according to claim 1 is characterized in that: The circulation mechanism comprises a liquid storage tank (5) for storing heat-conducting medium. The liquid storage tank (5) is connected to the inlet of the circulation pump (4) through a pipeline. The outlet of the circulation pump (4) and the liquid storage tank (5) are respectively connected to the first heat-conducting pipe (6).

3. The high-efficiency RV exhaust pipe waste heat recovery device according to claim 2 is characterized in that: The support portion comprises two sealed shells (1), which are spliced ​​together to form a tubular structure. The second heat conducting pipe (7) is bent and arranged in each sealed shell (1), and the two sealed shells (1) are fastened together by a clamp (3).

4. The high-efficiency RV exhaust pipe waste heat recovery device according to claim 3 is characterized in that: A heat insulation layer (9) is provided in the sealed shell (1), and the second heat conducting pipe (7) is arranged on the surface of the heat insulation layer (9).

5. The high-efficiency RV exhaust pipe waste heat recovery device according to claim 4 is characterized in that: A connecting pipe (12) is installed on the exhaust pipe, the support portion is sleeved on the connecting pipe (12), and limiting flanges (2) are provided at both ends of the connecting pipe (12) for limiting the two ends of the support portion. The second heat conducting pipe (7) is in contact with the surface of the connecting pipe (12).

6. The high-efficiency RV exhaust pipe waste heat recovery device according to claim 5 is characterized in that: Both ends of the connecting pipe (12) are connected to the exhaust pipe via flanges.

7. The high-efficiency RV exhaust pipe waste heat recovery device according to claim 4 is characterized in that: The second heat-conducting pipe (7) in each heat-insulating layer (9) passes through the sealed shell (1) and is connected to the first heat-conducting pipe (6).

8. The high-efficiency RV exhaust pipe waste heat recovery device according to any one of claims 1 to 7, characterized in that: The first heat conducting pipe (6) is provided with a heat exchange portion (13) arranged in a curved manner.

9. The high-efficiency RV exhaust pipe waste heat recovery device according to claim 8, characterized in that: The heat exchange part (13) is arranged in the water tank (8).

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