Waste heat recycling device for automobile exhaust

Abstract

The invention discloses an automobile exhaust waste heat recycling device which structurally comprises a gas collecting mechanism, a thermoelectric mechanism and cooling fins, the thermoelectric mechanism is installed in the gas collecting mechanism in a clamped mode, the cooling fins are installed on the outer surface of the gas collecting mechanism, exhaust is blocked through a flow blocking plate, particles in the exhaust can be filtered through a filter plate, and the exhaust can be recycled. The contact time of the tail gas and the thermoelectric mechanism can be prolonged through tail gas flow choking, and heat in the tail gas is recycled to the maximum extent; tail gas enters a limiting frame, at the moment, through elastic torsion connection of two torsion shafts, a swing plate can conduct elastic adjusting swing at the bottom of the limiting frame, and the air pressure of the tail gas is adjusted; not only can the tail gas be better contacted with the power generation mechanism, but also overlarge air pressure caused by large flow limitation of the limiting frame on the tail gas is avoided, so that the efficiency of converting heat energy of the tail gas into electric energy by the power generation mechanism is enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile exhaust gas, and more specifically, to a waste heat recovery and utilization device of automobile exhaust gas. Background Art

[0002] Automobile exhaust is the waste gas generated when the car is in use. It contains hundreds of different compounds, among which pollutants include solid suspended particles, carbon monoxide, carbon dioxide, hydrocarbons, nitrogen oxides, lead and sulfur oxides, etc., and the heat in automobile exhaust is very high. The waste heat recovery device can recover the heat in automobile exhaust and convert it into electrical energy. The waste heat recovery device adopts thermoelectric technology, which is an energy conversion technology that uses temperature difference to directly generate electricity. However, the existing waste heat recovery and utilization devices have the following shortcomings when recycling the heat in automobile exhaust: when the automobile exhaust enters the waste heat recovery and utilization device, the space inside the waste heat recovery and utilization device is effective, and the thermoelectric material is laid flat and fixed on the surface of the waste heat recovery and utilization device by spirals, which is not only inconvenient to disassemble, repair or replace the thermoelectric material, but also the exhaust gas flows faster inside the waste heat recovery and utilization device, resulting in a shorter contact time between the heat of the exhaust gas and the thermoelectric material, reducing the effect of the thermoelectric material in absorbing the heat in the exhaust gas, thereby reducing the efficiency of converting the heat energy in the exhaust gas into electrical energy. Summary of the invention

[0003] The technical solution adopted by the present invention to achieve the technical purpose is: a waste heat recovery and utilization device for automobile exhaust, whose structure includes an air collecting mechanism, a thermoelectric mechanism, and a heat sink. The thermoelectric mechanism is snap-fitted and installed inside the air collecting mechanism, and a heat sink is installed on the outer surface of the air collecting mechanism. The air collecting mechanism includes an intake pipe, a fixing rod, a processing mechanism, and an exhaust pipe. The intake pipe is fixedly installed at the left end of the processing mechanism and is through-connected. The fixing rod is fixedly installed inside the front end of the processing mechanism, and a heat sink is installed on the front end surface of the processing mechanism. The exhaust pipe is fixedly installed at the right end of the processing mechanism and is through-connected. The thermoelectric mechanism is snap-fitted and installed inside the processing mechanism. There are six fixing rods, and they are distributed in a three-by-two matrix inside the front end of the processing mechanism.

[0004] As a further improvement of the present invention, the processing mechanism includes an air intake cavity, a fixed tube, a screw, an adjusting clamping head, a flow blocking mechanism, and a disassembly and assembly mechanism. The air intake pipe is fixedly installed at the left end of the air intake cavity and is connected through it, and the exhaust pipe is fixedly installed at the right end of the air intake cavity and is connected through it. A fixing rod is fixedly installed inside the front end of the air intake cavity, and the fixed tube is installed inside the rear end of the air intake cavity. The screw is passed through the interior of the fixed tube by a clearance fit and is threadedly connected. An adjusting clamping head is welded to the front end of the screw, and the adjusting clamping head is located inside the air intake cavity. The flow blocking mechanism is snap-fitted and installed at the right end of the air intake cavity. The disassembly and assembly mechanism is installed on the rear surface of the right end of the air intake cavity, and the disassembly and assembly mechanism conflicts with the rear side of the flow blocking mechanism. There are six fixed tubes, screws and adjusting clamping heads, and they are distributed in a three-by-two matrix inside the rear end of the air intake cavity, corresponding to the six fixed rods inside the front end of the air intake cavity.

[0005] As a further improvement of the present invention, the baffle mechanism includes a handle, a support frame, a baffle plate, and a filter plate. The handle is welded to the rear end surface of the support frame, and the support frame is plugged into and installed inside the air intake cavity. The rear end of the support frame conflicts with the disassembly and assembly mechanism. The baffle plate and the filter plate are both plugged into and installed inside the support frame, and the baffle plate is located on the left side of the filter plate. The two sides of the support frame are four-sided pyramid structures and coincide with the side edges inside the air intake cavity, so that the support frame can be plugged into and installed inside the air intake cavity. Two baffle plates and two filter plates are each provided and are installed at intervals, and one baffle plate is used in conjunction with one filter plate.

[0006] As a further improvement of the present invention, the disassembly and assembly mechanism includes a card plate, a slider, and an elastic guide rod. The card plate is slidably installed on the rear surface of the right end of the air intake cavity, and a slider is provided on the inner side of the edge of the card plate. The slider is slidably installed inside the rear side of the right end. The elastic guide rod is passed through the inside of the slider with a clearance fit. The card plate is in conflict with the rear end of the support frame. The elastic guide rod is installed at an inclined angle inside the rear side of the right end of the air intake cavity, and the inclination of the elastic guide rod is consistent with the inclination angle of the inclined surface of the air intake cavity.

[0007] As a further improvement of the present invention, the thermoelectric mechanism includes a regulating mechanism and a power generation mechanism. The regulating mechanism is installed at the bottom of the power generation mechanism and is snap-fitted and installed inside the air intake cavity. The upper end of the power generation mechanism is located outside the air intake cavity.

[0008] As a further improvement of the present invention, the adjustment mechanism includes a limit frame, a swing plate, and a torsion shaft. The limit frame is fixedly installed at the bottom of the power generation mechanism, and the lower end of the limit frame is hinged to the right end of the swing plate through the torsion shaft. The limit frame has a "ㄇ"-shaped structure, and the size of the swing plate is consistent with the size of the cavity at the bottom of the limit frame, and is connected through the elastic torsion of the two torsion shafts.

[0009] As a further improvement of the present invention, the power generation mechanism includes a connecting base plate, a thermoelectric plate, a magnetic sheet, and a power storage box. The limit frame is fixedly installed on the bottom of the connecting base plate, and a magnetic sheet is installed on the top of the thermoelectric plate. The thermoelectric plate is installed on the bottom of the connecting base plate through the magnetic sheet. The power storage box is installed on the top of the connecting base plate, and the power storage box is electrically connected to the thermoelectric plate. Twelve thermoelectric plates and twelve magnetic sheets are provided, and the height of the twelve thermoelectric plates gradually increases from left to right.

[0010] The beneficial effects of the present invention are: 1. When the exhaust gas flows inside the air intake cavity, two baffles and two filter plates are installed at intervals on the support frame. One baffle plate is used in conjunction with one filter plate. The baffle plate blocks the exhaust gas and the filter plate can filter the particles in the exhaust gas, which can greatly improve the blockage of the exhaust gas and reduce the emission of harmful substances in the exhaust gas. Blocking the exhaust gas can increase the contact time between the exhaust gas and the thermoelectric mechanism, thereby recycling the heat in the exhaust gas to the greatest extent; 2. Through the elastic force applied by the elastic guide rod, the card plate can stay in the middle position of the inclined surface of the air intake cavity without providing external force, and resist the rear end of the support frame plugged and installed inside the air intake cavity, thereby improving the stability of the support frame supporting the spoiler and the filter plate installed inside the air intake cavity for work, and by sliding the card plate to separate from the support frame, the support frame can be quickly pulled out from the air intake cavity, which is convenient for replacing the spoiler and the filter plate; 3. When the exhaust gas flows inside the air intake cavity, it enters the limit frame. At this time, the elastic torsion connection of the two torsion shafts enables the swing plate to swing elastically at the bottom of the limit frame to adjust the pressure of the exhaust gas, which can not only improve the exhaust gas to better contact with the power generation mechanism, but also avoid the limit frame limiting the flow of the exhaust gas to a large extent and causing excessive pressure, thereby enhancing the efficiency of the power generation mechanism in converting the thermal energy of the exhaust gas into electrical energy; 4. The height of the twelve thermoelectric plates increases gradually from left to right, which increases the contact area between the thermoelectric plates and the exhaust gas, while avoiding the first thermoelectric plate from blocking the exhaust gas, ensuring that the twelve thermoelectric plates can better absorb the heat in the exhaust gas. The magnetic connection and fixation with the bottom of the connecting bottom plate are facilitated by the magnetic suction sheet, which facilitates the disassembly and assembly of the thermoelectric plates and enables the rapid replacement of the thermoelectric plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The present invention is a schematic structural diagram of a waste heat recovery and utilization device for automobile exhaust gas.

[0012] Figure 2 The figure is a schematic diagram of the disassembled structure of the waste heat recovery and utilization device for automobile exhaust gas of the present invention.

[0013] Figure 3 It is a schematic diagram of the three-dimensional cross-sectional structure of the gas collecting mechanism of the present invention.

[0014] Figure 4 It is a three-dimensional cross-sectional view and a partially enlarged structural schematic diagram of the processing mechanism of the present invention.

[0015] Figure 5 It is a three-dimensional structural schematic diagram of the processing mechanism, the flow blocking mechanism and the disassembly and assembly mechanism of the present invention.

[0016] Figure 6 It is a schematic diagram of the three-dimensional split structure of the thermoelectric mechanism of the present invention.

[0017] Figure 7 It is a schematic diagram of the three-dimensional adjustment state of the adjustment mechanism of the present invention and the split structure of the swing plate.

[0018] Figure 8 It is a schematic diagram of the three-dimensional split structure of the power generation mechanism of the present invention.

[0019] In the figure: gas collecting mechanism-H, thermoelectric mechanism-D, heat sink-S, air intake pipe-h9, fixing rod-h7, processing mechanism-h5, exhaust pipe-h3, air intake cavity-h54, fixing pipe-h53, screw-h57, adjusting clamping head-h59, flow blocking mechanism-h51, disassembly and assembly mechanism-h51, handle-6s, support frame-6k, flow blocking plate-6z, filter plate-6v, card plate-6b, slider-6k, elastic guide rod-6t, adjusting mechanism-d3, power generation mechanism-d6, limit frame-d35, swing plate-d32, torsion shaft-d39, connecting bottom plate-d69, thermoelectric plate-d61, magnetic suction plate-d66, storage box-d63. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings: Example

[0021] As attached Figure 1 To Attachment Figure 5 As shown: The present invention discloses a waste heat recovery and utilization device for automobile exhaust gas, which comprises an air collecting mechanism H, a thermoelectric mechanism D, and a heat sink S. The thermoelectric mechanism D is mounted inside the air collecting mechanism H, and the heat sink S is mounted on the outer surface of the air collecting mechanism H. The air collecting mechanism H comprises an air intake pipe h9, a fixing rod h7, a processing mechanism h5, and an exhaust pipe h3. The air intake pipe h9 is fixedly mounted on the left end of the processing mechanism h5 and is connected through the fixing rod h7, and the heat sink S is mounted on the front end surface of the processing mechanism h5. The exhaust pipe h3 is fixedly mounted on the right end of the processing mechanism h5 and is connected through the fixing rod h7, and the heat sink S is mounted on the front end surface of the processing mechanism h5. The exhaust pipe h3 is fixedly mounted on the right end of the processing mechanism h5 and is connected through the fixing rod h7, and the thermoelectric mechanism D is mounted inside the processing mechanism h5. There are six fixing rods h7, which are distributed in a three-by-two matrix inside the front end of the processing mechanism h5. The six fixing rods h7 can abut and fix the front surfaces of the two thermoelectric mechanisms D mounted at the upper and lower ends inside the processing mechanism h5.

[0022] Wherein, the processing mechanism h5 includes an air intake cavity h54, a fixed pipe h53, a screw h57, an adjusting clamping head h59, a flow blocking mechanism h51, and a disassembling mechanism h51. The air intake pipe h9 is fixedly installed at the left end of the air intake cavity h54 and is connected through, the exhaust pipe h3 is fixedly installed at the right end of the air intake cavity h54 and is connected through, a fixing rod h7 is fixedly installed inside the front end of the air intake cavity h54, and the fixed pipe h53 is installed inside the rear end of the air intake cavity h54, the screw h57 is passed through the inside of the fixed pipe h53 with a clearance fit and is threadedly connected, an adjusting clamping head h59 is welded at the front end of the screw h57, and the adjusting clamping head h59 is located inside the air intake cavity h54, the flow blocking mechanism h51 is clamped and installed at the right end inside the air intake cavity h54, the disassembling mechanism h51 is installed on the rear side surface of the right end of the air intake cavity h54, and the disassembling mechanism h51 conflicts with the rear side of the flow blocking mechanism h51; There are six fixed tubes h53, screw rods h57 and adjustment clamping heads h59, which are distributed in a three-by-two matrix inside the rear end of the air intake cavity h54, corresponding to the six fixed rods h7 inside the front end of the air intake cavity h54. The screw rods h57 are rotated and pushed inside the fixed tube h53 to drive the adjustment clamping head h59 to adjust forward and backward. In conjunction with the front fixed rods h7, the lower end of the thermoelectric mechanism D can be firmly snapped and installed inside the air intake cavity h54, and the thermoelectric mechanism D can be easily disassembled and repaired.

[0023] The baffle mechanism h51 includes a handle 6s, a support frame 6k, a baffle plate 6z, and a filter plate 6v. The handle 6s is welded to the rear end surface of the support frame 6k, and the support frame 6k is plugged and installed inside the air intake cavity h54. The rear end of the support frame 6k conflicts with the disassembly mechanism h51. The baffle plate 6z and the filter plate 6v are both plugged and installed inside the support frame 6k, and the baffle plate 6z is located on the left side of the filter plate 6v. The two sides of the support frame 6k are in a four-sided pyramid structure and coincide with the inner side of the air intake cavity h54, so that the support frame 6k can be inserted and installed in the air intake cavity h54, so that the exhaust gas in the air intake cavity h54 is all in contact with the baffle plate 6z, and the exhaust gas is blocked by the baffle plate 6z, and the residence time of the exhaust gas in the air intake cavity h54 is increased, thereby increasing the contact time with the thermoelectric mechanism D in the air intake cavity h54, and improving the effect of the thermoelectric mechanism D in absorbing heat in the exhaust gas. The baffle plate 6z and the filter plate 6v are each provided with two, and are installed at intervals. One baffle plate 6z is used in conjunction with one filter plate 6v. The baffle plate blocks the exhaust gas and the filter plate 6v can filter the particles in the exhaust gas, which can greatly improve the blockage of the exhaust gas and reduce the emission of harmful substances in the exhaust gas.

[0024] The disassembly and assembly mechanism h51 includes a card plate 6b, a slider 6k, and an elastic guide rod 6t. The card plate 6b is slidably mounted on the rear surface of the right end of the air inlet cavity h54, and a slider 6k is provided on the inner side of the edge of the card plate 6b. The slider 6k is slidably mounted inside the rear side of the right end. The elastic guide rod 6t is inserted into the inside of the slider 6k with a clearance fit. The card plate 6b is in conflict with the rear end of the support frame 6k. The elastic guide rod 6t is installed at an inclined angle inside the rear side of the right end of the air intake cavity h54, and the inclination of the elastic guide rod 6t is consistent with the inclination angle of the inclined surface of the air intake cavity h54, so that the card plate 6b can slide along the inclined surface of the air intake cavity h54, and with the elastic force applied by the elastic guide rod 6t, without providing external force, the card plate 6b can stay in the middle position of the inclined surface of the air intake cavity h54, and resist the rear end of the support frame 6k plugged into the air intake cavity h54, thereby improving the stability of the support frame 6k supporting the spoiler 6z and the filter plate 6v to be installed inside the air intake cavity h54 for work, and by sliding the card plate 6b to separate it from the support frame 6k, the support frame 6k can be quickly pulled out from the air intake cavity h54, so as to facilitate the replacement of the spoiler 6z and the filter plate 6v. The specific usage and function of this embodiment are as follows: In the present invention, the exhaust gas of the automobile is discharged into the air intake cavity h54 from the air intake pipe h9. After the exhaust gas enters the air intake cavity h54, it comes into contact with the thermoelectric mechanism D installed at the upper and lower ends of the air intake cavity h54, thereby converting the thermal energy of the exhaust gas into electrical energy and recycling the waste heat of the exhaust gas. The thermoelectric mechanism D is installed in the air intake cavity h54 and is rotated and pushed inside the fixed tube h53 by the screw h57, driving the adjustment clamping head h59 to adjust forward and backward. In conjunction with the front fixed rod h7, the lower end of the thermoelectric mechanism D can be firmly installed in the air intake cavity h54, and the thermoelectric mechanism D can be easily disassembled and repaired. When the exhaust gas flows in the air intake cavity h54, it is installed at intervals through two baffles 6z and two filter plates 6v on the support frame 6k. One baffle 6z is used in conjunction with one filter plate 6v, and the baffle is used to block the exhaust gas and pass through. The filter plate 6v can filter particles in the exhaust gas, which can greatly improve the exhaust gas obstruction and reduce the emission of harmful substances in the exhaust gas. The exhaust gas obstruction can increase the contact time between the exhaust gas and the thermoelectric mechanism D, thereby recycling the heat in the exhaust gas to the greatest extent. After the support frame 6k is plugged into the air intake cavity h54, the elastic force applied by the elastic guide rod 6t allows the card plate 6b to stay in the middle position of the inclined surface of the air intake cavity h54 without providing external force, and resists the rear end of the support frame 6k plugged into the air intake cavity h54, thereby improving the stability of the support frame 6k supporting the baffle plate 6z and the filter plate 6v to be installed in the air intake cavity h54. The support frame 6k can be quickly pulled out from the air intake cavity h54 by sliding the card plate 6b to separate it from the support frame 6k, so as to facilitate the replacement of the baffle plate 6z and the filter plate 6v. Example

[0025] As attached Figure 6 To Attachment Figure 8 As shown: Among them, the thermoelectric mechanism D includes an adjusting mechanism d3 and a power generation mechanism d6. The adjusting mechanism d3 is installed at the bottom of the power generation mechanism d6, and the adjusting mechanism d3 is snap-fitted and installed inside the air intake cavity h54. The upper end of the power generation mechanism d6 is located outside the air intake cavity h54.

[0026] The regulating mechanism d3 comprises a limit frame d35, a swing plate d32 and a torsion shaft d39. The limit frame d35 is fixedly mounted at the bottom of the power generation mechanism d6, and the lower end of the limit frame d35 is hinged to the right end of the swing plate d32 through the torsion shaft d39. The limit frame d35 has a "ㄇ"-shaped structure, and the size of the swing plate d32 is consistent with the size of the cavity at the bottom of the limit frame d35. Through the elastic torsion connection of the two torsion shafts d39, the swing plate d32 can be elastically adjusted and swung at the bottom of the limit frame d35, thereby adjusting the air pressure of the exhaust gas entering the limit frame d35, ensuring that the exhaust gas can better contact the power generation mechanism d6, thereby enhancing the efficiency of the power generation mechanism d6 in converting the thermal energy of the exhaust gas into electrical energy.

[0027] The power generation mechanism d6 includes a connecting bottom plate d69, a thermoelectric plate d61, a magnetic sheet d66, and a power storage box d63. The limit frame d35 is fixedly installed at the bottom of the connecting bottom plate d69, and a magnetic sheet d66 is installed on the top of the thermoelectric plate d61. The thermoelectric plate d61 is plugged and installed at the bottom of the connecting bottom plate d69 through the magnetic sheet d66. The power storage box d63 is installed on the top of the connecting bottom plate d69, and the power storage box d63 is electrically connected to the thermoelectric plate d61. There are twelve thermoelectric plates d61 and magnetic sheets d66, and the heights of the twelve thermoelectric plates d61 gradually increase from left to right, thereby increasing the contact area between the thermoelectric plates d61 and the exhaust gas, while preventing the first thermoelectric plate d61 from blocking the exhaust gas, ensuring that the twelve thermoelectric plates d61 can better absorb the heat in the exhaust gas. The magnetic sheets d66 are magnetically connected and fixed to the bottom of the connecting bottom plate d69, which facilitates the disassembly and assembly of the thermoelectric plates d61 and enables the rapid replacement of the thermoelectric plates d61. The specific usage and function of this embodiment are as follows: In the present invention, when the thermoelectric mechanism D is installed inside the air intake cavity h54, the lower ends of the regulating mechanism d3 and the power generation mechanism d6 are both located inside the air intake cavity h54, and the battery box d63 at the upper end of the power generation mechanism d6 is located outside the air intake cavity h54. When the exhaust gas flows inside the air intake cavity h54, it enters the limit frame d35. At this time, through the elastic torsion connection of the two torsion shafts d39, the swing plate d32 can be elastically adjusted and swung at the bottom of the limit frame d35 to adjust the air pressure of the exhaust gas, which can not only improve the exhaust gas to better contact with the power generation mechanism d6, but also avoid the limit frame d35 from limiting the flow of the exhaust gas to a large extent, resulting in excessive air pressure. Thereby enhancing the efficiency of the power generation mechanism d6 in converting the thermal energy of the exhaust gas into electrical energy. When converting the heat in the exhaust gas into electrical energy, the power generation mechanism d6 contacts the thermal energy through the twelve thermoelectric plates d61, and the height of the twelve thermoelectric plates d61 increases gradually from left to right, thereby increasing the contact area between the thermoelectric plates d61 and the exhaust gas, while avoiding the first thermoelectric plate d61 from blocking the exhaust gas, ensuring that the twelve thermoelectric plates d61 can better absorb the heat in the exhaust gas, and are magnetically connected and fixed to the bottom of the connecting bottom plate d69 through the magnetic suction sheet d66, which facilitates the disassembly and assembly of the thermoelectric plate d61 and enables the thermoelectric plate d61 to be quickly replaced. Utilizing the technical solution of the present invention, or those skilled in the art designing similar technical solutions inspired by the technical solution of the present invention to achieve the above-mentioned technical effects, all fall within the protection scope of the present invention.

Claims

1. A waste heat recovery and utilization device for automobile exhaust, comprising a gas collecting mechanism (H), a thermoelectric mechanism (D), and a heat sink (S), wherein the thermoelectric mechanism (D) is mounted inside the gas collecting mechanism (H), and the heat sink (S) is mounted on the outer surface of the gas collecting mechanism (H), characterized in that: The air collecting mechanism (H) comprises an air intake pipe (h9), a fixing rod (h7), a processing mechanism (h5), and an exhaust pipe (h3); the air intake pipe (h9) is fixedly installed at the left end of the processing mechanism (h5) and is connected through; the fixing rod (h7) is fixedly installed inside the front end of the processing mechanism (h5), and a heat sink (S) is installed on the front end surface of the processing mechanism (h5); the exhaust pipe (h3) is fixedly installed at the right end of the processing mechanism (h5) and is connected through; and a thermoelectric mechanism (D) is installed inside the processing mechanism (h5).

2. The waste heat recovery device for automobile exhaust gas according to claim 1 is characterized in that: The processing mechanism (h5) comprises an air intake cavity (h54), a fixed pipe (h53), a screw (h57), an adjusting clamping head (h59), a flow blocking mechanism (h51), and a disassembly mechanism (h51); the air intake pipe (h9) is fixedly installed at the left end of the air intake cavity (h54) and is connected through; the exhaust pipe (h3) is fixedly installed at the right end of the air intake cavity (h54) and is connected through; a fixed rod (h7) is fixedly installed inside the front end of the air intake cavity (h54), and the fixed pipe (h53) is installed in the air intake cavity (h 54), the screw rod (h57) is inserted into the fixed tube (h53) with a clearance fit and is threadedly connected, an adjusting clamping head (h59) is welded to the front end of the screw rod (h57), and the adjusting clamping head (h59) is located inside the air intake cavity (h54), the flow blocking mechanism (h51) is snap-fitted and installed at the right end inside the air intake cavity (h54), the disassembly and assembly mechanism (h51) is installed on the rear side surface of the right end of the air intake cavity (h54), and the disassembly and assembly mechanism (h51) is in conflict with the rear side of the flow blocking mechanism (h51).

3. The waste heat recovery device for automobile exhaust gas according to claim 2 is characterized in that: The baffle mechanism (h51) comprises a handle (6s), a support frame (6k), a baffle plate (6z), and a filter plate (6v); the handle (6s) is welded to the rear end surface of the support frame (6k), and the support frame (6k) is plugged and installed inside the air intake cavity (h54); the rear end of the support frame (6k) is in conflict with the disassembly and assembly mechanism (h51); the baffle plate (6z) and the filter plate (6v) are both plugged and installed inside the support frame (6k), and the baffle plate (6z) is located on the left side of the filter plate (6v).

4. The waste heat recovery device for automobile exhaust gas according to claim 3 is characterized in that: The disassembly and assembly mechanism (h51) comprises a card plate (6b), a slider (6k), and an elastic guide rod (6t); the card plate (6b) is slidably mounted on the rear surface of the right end of the air intake cavity (h54); a slider (6k) is provided on the inner side of the edge of the card plate (6b); the slider (6k) is slidably mounted inside the rear side of the right end; the elastic guide rod (6t) penetrates the inside of the slider (6k) with a clearance fit; and the card plate (6b) abuts against the rear end of the support frame (6k).

5. The waste heat recovery device for automobile exhaust gas according to claim 2 is characterized in that: The thermoelectric mechanism (D) comprises an adjusting mechanism (d3) and a power generation mechanism (d6); the adjusting mechanism (d3) is installed at the bottom of the power generation mechanism (d6), and the adjusting mechanism (d3) is snap-fitted and installed inside an air intake cavity (h54); and the upper end of the power generation mechanism (d6) is located outside the air intake cavity (h54).

6. The waste heat recovery device for automobile exhaust gas according to claim 5 is characterized in that: The regulating mechanism (d3) comprises a limit frame (d35), a swing plate (d32), and a torsion shaft (d39); the limit frame (d35) is fixedly mounted on the bottom of the power generation mechanism (d6), and the lower end of the limit frame (d35) is hinged to the right end of the swing plate (d32) via the torsion shaft (d39).

7. The waste heat recovery device for automobile exhaust gas according to claim 6 is characterized in that: The power generation mechanism (d6) comprises a connecting base plate (d69), a thermoelectric plate (d61), a magnetic sheet (d66), and a power storage box (d63); the limit frame (d35) is fixedly mounted on the bottom of the connecting base plate (d69), and a magnetic sheet (d66) is mounted on the top of the thermoelectric plate (d61); the thermoelectric plate (d61) is plugged and mounted on the bottom of the connecting base plate (d69) through the magnetic sheet (d66); the power storage box (d63) is mounted on the top of the connecting base plate (d69), and the power storage box (d63) is electrically connected to the thermoelectric plate (d61).

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