A muffler device with integrated temperature difference power generation function

Abstract

The present invention discloses a muffler device with integrated temperature difference power generation function, comprising a heat exchange shell and a heat exchange power generation device installed on the outer surface of the heat exchange shell, a heat shield with through holes is arranged in the heat exchange shell to divide the heat exchange shell into a front heat exchange chamber and a rear heat exchange chamber, a muffler connected to the exhaust pipe is arranged in the rear heat exchange chamber, the muffler is fixedly connected to the heat exchange shell through a spoiler, at least three spoilers are evenly distributed in the circumferential direction of the muffler, raised spoiler fins are symmetrically arranged on both sides of the spoiler, and the spoiler fins are inclined to the outside of the center line of the heat exchange shell; the present invention divides the interior of the heat exchange shell into two chambers by arranging the heat shield, and the front and rear chambers work in partitions, so as to effectively integrate the heat exchange power generation device and the muffler into one; at the same time, spoiler fins that are symmetrically distributed and inclined to the outside of the center line of the heat exchange shell are arranged on the spoiler to improve the heat exchange and power generation capacity of the rear heat exchanger.

Description

Technical Field

[0001] The present invention relates to the technical field of temperature difference power generation, and in particular to a muffler device with integrated temperature difference power generation function. Background Art

[0002] Since the beginning of the 21st century, industrial development has become increasingly dependent on non-renewable resources, and energy issues have become particularly important. With the advancement of the times and technology, environmental protection and energy conservation have become important goals for the development of today's society. However, studies have shown that only about 30% of the energy generated by the combustion of fuel in automobile engines is used for driving the car, of which only 38.5% of the heat energy generated is used as indicated power output, while 33% of the heat energy is discharged into the atmosphere with exhaust gas, and the remaining 70% of the energy is not effectively utilized. At the same time, the exhaust gas generated not only causes a huge waste of resources, but also has an irreversible impact on the environment. With the increasing number of cars in use today, it is particularly important to recycle the waste heat generated by the engine, improve the utilization rate of automobile fuel heat energy, and thus improve the overall performance of the vehicle.

[0003] The automobile exhaust temperature difference power generation system is an effective device that utilizes the waste heat of the engine exhaust gas to realize energy recovery and improve the utilization rate of the thermal energy of automobile fuel. Its working principle is based on the thermoelectric effect of semiconductor materials. The high temperature generated by the exhaust gas forms a temperature difference with the cooling water in the water tank to generate electricity to realize energy recovery. The electricity generated by the recovered waste heat can also be used for the internal electrical equipment of the automobile. It has the advantages of compact structure, small space occupancy, strong controllability, and high thermal energy utilization.

[0004] At present, the automobile exhaust temperature difference power generation technology mainly adopts a separate temperature difference power generation system placed in the exhaust pipe. After the temperature difference power generation is performed by the temperature difference power generation system, it flows into the muffler for silencer. A separate temperature difference power generation system not only takes up a large space, but also causes uneven temperature in the chamber during the circulation of exhaust gas, which also consumes part of the heat energy and cannot effectively improve the utilization rate. In addition, considering that multiple devices are placed in the entire exhaust pipe, a large back pressure is generated, which causes the efficiency of the entire automobile exhaust system to decrease, thereby having an adverse effect on the automobile engine, reducing the engine fuel economy, affecting the performance of the entire vehicle, and at the same time interfering with the performance of the three-way catalytic converter and muffler in the exhaust pipe. As an important part of the automobile exhaust emission system, the muffler effectively controls the noise pollution generated by the automobile, but due to the compact space of the automobile chassis, the size and installation position of the muffler are also an important issue. How to effectively control the uniform temperature in the system, increase the space utilization of the temperature difference power generation system, and improve the compatibility of the temperature difference power generation system and the muffler has become a difficult problem in the design of the automobile exhaust temperature difference power generation system. Summary of the invention

[0005] Purpose of the invention: In view of the deficiencies in the prior art, the present invention provides a muffler device with integrated temperature difference power generation function. The device combines the structure of the muffler device and uses a spoiler to set a plurality of spoiler fins inclined outward, so as to achieve uniform temperature in the chamber and improve heat exchange efficiency by the spoiler effect on the exhaust gas.

[0006] Technical solution: A silencer device with integrated temperature difference power generation function, comprising a heat exchange shell and a heat exchange power generation device installed on the outer surface of the heat exchange shell, wherein the two ends of the heat exchange shell are respectively connected to the intake pipe and the exhaust pipe, a heat shield with through holes is arranged in the heat exchange shell to divide the heat exchange shell into a front heat exchange chamber and a rear heat exchange chamber, a silencer connected to the exhaust pipe is arranged in the rear heat exchange chamber, the silencer is fixedly connected to the heat exchange shell through a spoiler, at least three spoilers are evenly distributed in the circumferential direction of the silencer, raised spoiler fins are symmetrically arranged on both sides of the spoiler, and the spoiler fins are inclined toward the outside of the center line of the heat exchange shell.

[0007] The present invention divides the interior of the heat exchange shell into two chambers by arranging a heat shield with through holes, and arranges the silencer separately in the rear end heat exchange chamber, so that the front end heat exchange chamber absorbs heat to the maximum extent for heat exchange and power generation, and the rear end heat exchange chamber uses the silencer to silence and reduce the noise of the exhaust gas; at the same time, in order to make the rear end heat exchanger have better heat exchange function at the same time, a spoiler is arranged to be connected with the heat exchange shell and the silencer, and spoiler fins which are symmetrically distributed and inclined to the outside of the center line of the heat exchange shell are arranged on the spoiler, so as to further turbulent the exhaust gas entering the rear end heat exchange chamber, lift the exhaust gas to the inner surface of the heat exchange shell, so that the heat exchange shell can absorb heat more effectively, and further improve the heat exchange and power generation capacity of the rear end heat exchange chamber. In addition, the arrangement of the spoiler fins can also make part of the exhaust gas stay in the rear end heat exchange chamber for a longer time, so that the temperature in the chamber is more uniform and the temperature difference power generation work is more stable.

[0008] In order to achieve effective spoiler lifting of the exhaust gas so that the heat exchange shell can contact more exhaust gas for heat exchange and power generation, a group of spoiler fins with equal and increasing inclination angles are arranged on both sides of the spoiler along the air intake direction, and the length of the spoiler fins increases successively along the air intake direction.

[0009] A group of spoiler fins with equal and increasing inclination angles are provided so that the exhaust gas flow direction gradually shifts toward the heat exchange shell during its movement. The flow of the exhaust gas in the chamber is affected by the spoiler fins, so that the exhaust gas stays in the rear chamber longer and the temperature in the rear chamber is more uniform.

[0010] In order to further enhance the spoiler effect on the exhaust gas, the spoiler fins are arranged as two groups of spoiler fins symmetrically distributed about the center line of the spoiler.

[0011] By providing two sets of symmetrical spoiler fins, the contact area between the exhaust gas and the spoiler fins is larger, and the spoiler effect is also improved. The temperature in the chamber will become more uniform as the spoiler effect increases, and increasing the temperature in the chamber will further improve the heat exchange efficiency.

[0012] In order to achieve more effective silencing of the exhaust gas, the silencing device includes a first conical muffler and a second conical muffler coaxially arranged along the air intake direction, and the first conical muffler and the second conical muffler are fixedly connected to the heat exchange shell through a spoiler.

[0013] The double conical silencer can maximize the silencing capacity within the limited space of the rear heat exchange chamber. At the same time, the noise of the exhaust gas has been relatively reduced after passing through the first conical silencer. At this time, the noise of the exhaust gas passing through the second conical silencer will be further reduced, achieving a double-stage silencing effect.

[0014] In order to further improve the silencing effect of the device, silencing cotton is arranged on the inner end surface of the rear end heat exchange chamber close to the exhaust pipe.

[0015] When the exhaust gas flows through the rear end heat exchange chamber, part of the exhaust gas that does not pass through the silencer flows in the chamber due to the turbulence effect. Silencing cotton is arranged on the inner end face close to the exhaust pipe to silence the exhaust gas passing through the turbulence fins, thereby further reducing the noise in the exhaust gas.

[0016] In order to make the temperature in the chamber uniform, air holes are arranged on the walls of the first conical muffler and the second conical muffler.

[0017] The air holes are provided to reduce the back pressure and make the temperature distribution in the chamber uniform.

[0018] In order to improve the heat exchange efficiency of the front end heat exchange chamber, the part of the air intake pipe in the front end heat exchange chamber is set as a dual-channel air intake pipe, including an upper air intake pipe and a lower air intake pipe symmetrically distributed along the center line of the air intake pipe, and air outlet holes are set on the pipe walls of the upper air intake pipe and the lower air intake pipe.

[0019] The part of the air inlet pipe in the front heat exchange chamber is set as two upper and lower diversion pipes with air outlet holes, so that the exhaust gas can be diverted into both sides of the chamber. At the same time, part of the exhaust gas is transmitted to the chamber near the middle through the air outlet holes in the longitudinal direction, making the temperature in the chamber more uniform and improving the heat exchange and power generation efficiency of the exhaust gas.

[0020] In order to maximize the heat exchange power generation efficiency of the cold and hot ends, the heat exchange power generation device includes a thermoelectric module and a water tank, and the two sides of the thermoelectric module are respectively connected to the heat exchange shell and the water tank.

[0021] The cold end of the thermoelectric module is connected to the water tank, and the hot end is connected to the heat exchange shell. The direct connection reduces heat loss and improves the heat exchange power generation capacity.

[0022] In order to achieve the continuity of the cold end refrigeration effect, the water tank is provided with an inlet pipe and an outlet pipe connected at the ends.

[0023] The flowing water continuously cools down the water tank, so that the water tank maintains a good cooling effect.

[0024] Beneficial effects: The present invention divides the interior of the heat exchange shell into two chambers by arranging a heat shield with through holes, and arranges the silencer device separately in the rear heat exchange chamber, so that the front heat exchange chamber absorbs heat to the maximum extent for heat exchange and power generation, and the rear heat exchange chamber uses the silencer device to silence and reduce the noise of the exhaust gas, effectively integrating the heat exchange power generation device and the silencer device into one;

[0025] At the same time, in order to make the rear heat exchanger have better heat exchange function, a spoiler is set to connect with the heat exchange shell and the silencer, and spoiler fins are arranged on the spoiler, which are symmetrically distributed and inclined to the outside of the center line of the heat exchange shell, so as to further disturb the exhaust gas entering the rear heat exchange chamber, lift the exhaust gas to the inner surface of the heat exchange shell, so that the heat exchange shell can absorb heat more effectively, and further improve the heat exchange power generation capacity of the rear heat exchange chamber;

[0026] In addition, the provision of spoiler fins can also allow part of the exhaust gas to stay in the rear heat exchange chamber for a longer time, making the temperature in the chamber more uniform and the temperature difference power generation more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0028] Figure 1 It is the overall structure diagram of the present invention.

[0029] Figure 2 It is the internal structure diagram of the present invention.

[0030] Figure 3 It is a structural diagram of the baffle of the present invention.

[0031] Figure 4 It is a structural diagram of the silencer and spoiler of the present invention.

[0032] Figure 5 It is a schematic diagram of the installation of the thermoelectric module of the present invention. DETAILED DESCRIPTION

[0033] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0036] like Figures 1 to 5 As shown, a silencer device with integrated temperature difference power generation function comprises a heat exchange shell 1 and a heat exchange power generation device 2 installed on the outer surface of the heat exchange shell 1, wherein the two ends of the heat exchange shell 1 are respectively connected to the intake pipe 3 and the exhaust pipe 4, and a heat shield 5 with a through hole 51 is arranged in the heat exchange shell 1 to divide the heat exchange shell 1 into a front heat exchange chamber 11 and a rear heat exchange chamber 12, characterized in that: a silencer 6 connected to the exhaust pipe 4 is arranged in the rear heat exchange chamber 12, and the silencer 6 is fixedly connected to the heat exchange shell 1 through a spoiler 7, and the silencer 6 is evenly distributed in the circumferential direction of the silencer 6. Raised spoiler fins 71 are symmetrically arranged on both sides of the spoiler 7, and the spoiler fins 71 are inclined to the outside of the center line of the heat exchange shell 1; a group of spoiler fins 71 with equal inclination angles and increasing one by one are arranged on both sides of the spoiler 7 along the intake direction, and the lengths of the spoiler fins 71 increase successively along the intake direction.

[0037] The present invention divides the interior of the heat exchange shell 1 into two chambers by arranging a heat shield with through holes, and arranges the silencer 6 separately in the rear end heat exchange chamber 12, so that the front end heat exchange chamber 11 absorbs heat to the maximum extent for heat exchange and power generation, and the rear end heat exchange chamber 12 performs exhaust gas silencing and noise reduction through the silencer 3; at the same time, in order to make the rear end heat exchange chamber 12 have a good heat exchange function at the same time, a spoiler 7 is arranged to be connected with the heat exchange shell 1 and the silencer 6, and spoiler fins 71 symmetrically distributed and inclined to the outside of the center line of the heat exchange shell 1 are arranged on the spoiler 7, so as to further turbulent the exhaust gas entering the rear end heat exchange chamber 12, and lift the exhaust gas to the inner surface of the heat exchange shell 1, so that the heat exchange shell 1 can absorb heat more effectively, and further improve the heat exchange and power generation capacity of the rear end heat exchange chamber 12. In addition, the spoiler fins 71 can also make part of the exhaust gas stay in the rear end heat exchange chamber 12 for a longer time, so that the temperature in the chamber is more uniform and the temperature difference power generation work is more stable.

[0038] like Figure 2 and 4 As shown, the spoiler fins 71 are provided as two groups of spoiler fins 71 symmetrically distributed about the center line of the spoiler.

[0039] By providing two sets of symmetrical spoiler fins 71, the contact area between the exhaust gas and the spoiler fins 71 is larger, and the spoiler effect is also improved. The temperature in the chamber will be more uniform as the spoiler effect increases, and increasing the temperature in the chamber further improves the heat exchange efficiency.

[0040] Embodiment 1

[0041] The spoiler fin 71 is provided as at least one, wherein the angle between the spoiler fin 71 at the initial end and the air intake direction is "90°÷(the number of spoiler fins in a single group+1)", and the angle between the spoiler fin 71 at the terminal end and the air intake direction is "the product of the number of spoiler fins in a single group and the angle between the spoiler fin 71 at the initial end and the air intake direction".

[0042] When the number of the spoiler fins 71 is infinite, the spoiler fin 71 is an arc-shaped spoiler fin 71 whose starting end has an angle with the air intake direction that is infinitely close to 0° and whose end end is infinitely close to 90°.

[0043] Embodiment 2

[0044] The two groups of spoiler fins 71 include one spoiler fin 71 on the upper and lower sides respectively, and the included angle between the spoiler fin 71 and the air intake direction is 45°.

[0045] Embodiment 3

[0046] like Figure 4As shown, the two groups of spoiler fins 71 are four spoiler fins 71 on the upper and lower sides respectively. The starting end of the spoiler fin 71 has an angle of 18° with the air intake direction, which increases by 18° along the air intake direction. The end spoiler fin 71 has an angle of 72° with the air intake direction. The angles of the spoiler fins from the starting end to the end and the air intake direction are 18°, 36°, 54° and 72° respectively.

[0047] In this embodiment, after the exhaust gas passes through the silencer fins 71, its flow direction gradually rises from the starting end to the side of the heat exchange shell, and finally contacts the heat exchange shell 1 to transfer heat.

[0048] In addition, the spoiler fins 71 symmetrically inclined toward the center of the heat exchange shell 1 guide part of the exhaust gas to flow toward the middle of the chamber, thereby increasing the flow of gas in the chamber, further increasing the residence time of the gas in the chamber, and increasing the heat exchange power generation capacity.

[0049] Embodiment 4

[0050] The installation direction of the spoiler is set to be non-parallel to the air intake direction.

[0051] In this embodiment, the exhaust gas flowing through the spoiler 7 is affected by the spoiler 7 and the spoiler fins 71, and can be lifted toward the heat exchange shell 1 or deviated to the two sides of the spoiler 7, thereby increasing the flow time of the exhaust gas and further improving the heat exchange power generation capacity.

[0052] like Figure 4 As shown, the silencer 6 includes a first conical silencer 61 and a second conical silencer 62 coaxially arranged along the air intake direction, and the first conical silencer 61 and the second conical silencer 62 are fixedly connected to the heat exchange shell 1 through a spoiler 7; the walls of the first conical silencer 61 and the second conical silencer 62 are both provided with air holes 63.

[0053] The double conical silencer can maximize the silencing capacity within the limited space of the rear heat exchange chamber 12. At the same time, the noise of the exhaust gas has been relatively reduced after passing through the first conical silencer 61. At this time, the noise of the exhaust gas passing through the second conical silencer 62 will be further reduced, achieving a double-stage silencing effect; the air hole 63 is set to reduce the back pressure and make the temperature distribution in the chamber uniform.

[0054] like Figure 2 As shown, a silencer cotton 8 is provided on the inner end surface of the rear end heat exchange chamber 12 close to the exhaust pipe 4 .

[0055] When the exhaust gas flows through the rear end heat exchange chamber 12, the exhaust gas that does not pass through the silencer 6 flows in the chamber due to the turbulence effect. A silencer cotton 8 is arranged on the inner end face close to the exhaust pipe 4 to silence the exhaust gas passing through the turbulence fins 71, thereby further reducing the noise in the exhaust gas.

[0056] like Figure 2 As shown, the portion of the air intake pipe 3 in the front heat exchange chamber 11 is configured as a dual-channel air intake pipe, including an upper air intake pipe 31 and a lower air intake pipe 32 symmetrically distributed along the center line of the air intake pipe 3, and air outlet holes 33 are provided on the pipe walls of the upper air intake pipe 31 and the lower air intake pipe 32.

[0057] The portion of the air inlet pipe 3 in the front heat exchange chamber 11 is set as two upper and lower diversion pipes with air outlet holes 33, so that the exhaust gas can be diverted into the two sides of the chamber. At the same time, part of the exhaust gas is transmitted to the chamber near the middle through the air outlet holes 33 in the longitudinal direction, so that the temperature in the chamber is more uniform, and the heat exchange and power generation efficiency of the exhaust gas is improved.

[0058] like Figure 1 As shown, the heat exchange power generation device 2 includes a thermoelectric module 21 and a water tank 22. The two sides of the thermoelectric module 21 are respectively connected to the heat exchange shell 1 and the water tank 22; the water tank 22 is provided with an inlet pipe 221 and an outlet pipe 222 with connected ends.

[0059] The cold end of the thermoelectric module 21 is connected to the water tank 22, and the hot end is connected to the heat exchange shell 1. The direct connection reduces heat loss and improves the heat exchange power generation capacity; the flowing water continuously cools the water tank 22, so that the water tank 22 maintains a good cooling effect.

[0060] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0061] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A muffler device with integrated temperature difference power generation function, comprising a heat exchange shell (1) and a heat exchange power generation device (2) mounted on the outer surface of the heat exchange shell (1), wherein two ends of the heat exchange shell (1) are respectively connected to an intake pipe (3) and an exhaust pipe (4), and a heat shield (5) with a through hole (51) is arranged in the heat exchange shell (1) to divide the heat exchange shell (1) into a front heat exchange chamber (11) and a rear heat exchange chamber (12), characterized in that: A silencer (6) connected to the exhaust pipe (4) is arranged in the rear heat exchange chamber (12); the silencer (6) is fixedly connected to the heat exchange shell (1) via a spoiler (7); at least three spoilers (7) are evenly distributed in the circumferential direction of the silencer (6); raised spoiler fins (71) are symmetrically arranged on both sides of the spoiler (7); and the spoiler fins (71) are inclined toward the outside of the center line of the heat exchange shell (1); A group of spoiler fins (71) with equal and increasing inclination angles are arranged on both sides of the spoiler plate (7) along the air intake direction, and the lengths of the spoiler fins (71) increase in sequence along the air intake direction; The spoiler fins (71) are arranged as two groups of spoiler fins (71) symmetrically distributed about the center line of the spoiler plate; The silencer (6) comprises a first conical silencer (61) and a second conical silencer (62) coaxially arranged along the air intake direction, and the first conical silencer (61) and the second conical silencer (62) are fixedly connected to the heat exchange shell (1) via a spoiler (7).

2. The muffler device with integrated temperature difference power generation function according to claim 1, characterized in that: A sound-absorbing cotton (8) is provided on the inner end surface of the rear end heat exchange chamber (12) close to the exhaust pipe (4).

3. The muffler device with integrated thermoelectric power generation function according to claim 1, characterized in that: The walls of the first conical muffler (61) and the second conical muffler (62) are both provided with air holes (63).

4. The muffler device with integrated thermoelectric power generation function according to claim 1, characterized in that: The portion of the air intake pipe (3) within the front heat exchange chamber (11) is configured as a dual-channel air intake pipe, comprising an upper air intake pipe (31) and a lower air intake pipe (32) symmetrically distributed along the center line of the air intake pipe (3).

5. The muffler device with integrated thermoelectric power generation function according to claim 4, characterized in that: Air outlet holes (33) are provided on the walls of the upper air inlet pipe (31) and the lower air inlet pipe (32).

6. The muffler device with integrated thermoelectric power generation function according to claim 1, characterized in that: The heat exchange power generation device (2) comprises a thermoelectric module (21) and a water tank (22), and two sides of the thermoelectric module (21) are respectively connected to the heat exchange housing (1) and the water tank (22).

7. The muffler device with integrated thermoelectric power generation function according to claim 6, characterized in that: The water tank (22) is provided with a water inlet pipe (221) and a water outlet pipe (222) whose ends are connected.

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