阅读说明：本技术 一种汽车尾气余热回收利用装置 (Automobile exhaust waste heat recycling device ) 是由 陈苏宁 于 2019-10-31 设计创作，主要内容包括：本发明公开的一种汽车尾气余热回收利用装置,包括回收器,所述回收器内固定设有集热器,所述集热器左侧连通设有开口向左的进气管道,所述集热器右侧连通设有开口向右的出气管道,通过所述进气管道将过滤后的汽车尾气输送到所述集热器内,通过所述集热器对气体中的热量进行提取与储存；本发明可根据室外温度,调节对汽车尾气中余热的回收率,当室外温度较高时,停止对余热的回收,当室外温度较低时,可自适应性调节对余热的回收率,温度越低,回收率越高,并可人为的控制对余热的回收率,为了安全考虑,人为控制只能降低对余热的回收,无法提高回收率,避免误操作而在高温情况下进行余热回收。(The invention discloses an automobile exhaust waste heat recycling device which comprises a recoverer, wherein a heat collector is fixedly arranged in the recoverer, the left side of the heat collector is communicated with an air inlet pipeline with a left opening, the right side of the heat collector is communicated with an air outlet pipeline with a right opening, filtered automobile exhaust is conveyed into the heat collector through the air inlet pipeline, and heat in air is extracted and stored through the heat collector; the invention can adjust the recovery rate of the waste heat in the automobile exhaust according to the outdoor temperature, when the outdoor temperature is higher, the recovery rate of the waste heat is stopped, when the outdoor temperature is lower, the recovery rate of the waste heat can be adaptively adjusted, the lower the temperature is, the higher the recovery rate is, and the recovery rate of the waste heat can be artificially controlled.)

1. The utility model provides an automobile exhaust waste heat recovery utilizes device, includes the recoverer, its characterized in that: a heat collector is fixedly arranged in the recoverer, the left side of the heat collector is communicated with an air inlet pipeline with a left opening, the right side of the heat collector is communicated with an air outlet pipeline with a right opening, filtered automobile exhaust is conveyed into the heat collector through the air inlet pipeline, heat in the air is extracted and stored through the heat collector, the exhaust gas is discharged through the air outlet pipeline, the left end of the lower wall of the air inlet pipeline is communicated with a left direct exhaust channel with a downward opening, the lower wall of the air outlet pipeline is communicated with a right direct exhaust channel with a downward opening, a connecting pipe is arranged on the lower side of the recoverer, two ends of the left end and the right end of the connecting pipe are fixedly connected to the left end and the right end of the lower end face of the recoverer, a communicating pipeline penetrates through the connecting pipe, and the left direct exhaust;

a valve device is arranged on the lower side of the air inlet pipeline and on the right side of the left straight exhaust channel, and an upper sealing plate capable of extending into the air inlet pipeline and a left sealing plate capable of extending into the left straight exhaust channel are arranged in the valve device;

the temperature control device is arranged on the lower side of the valve device and can adjust the opening and closing degree of the upper sealing plate and the left sealing plate according to the external temperature, when the external temperature is higher, the tail gas waste heat recovery significance is not large, the tail gas is directly discharged, and when the external temperature is lower, the tail gas waste heat recovery is carried out;

an electric control device is arranged on the right side of the valve device, and the opening degree of the upper sealing plate and the opening degree of the left sealing plate can be manually controlled through the electric control device.

2. The automobile exhaust waste heat recycling device according to claim 1, characterized in that: when the upper sealing plate is opened, the left sealing plate is opened, tail gas entering the air inlet pipeline is directly discharged through the left direct discharging channel, the communicating pipeline and the air outlet pipeline, when the upper sealing plate is opened, the left sealing plate closes the left direct discharging channel, and gas enters the heat collector from the air inlet pipeline for heat collection and then is discharged through the air outlet pipeline.

3. The automobile exhaust waste heat recycling device according to claim 1, characterized in that: the valve device comprises an air inlet pipeline and a valve control cavity arranged on the right side of the left direct discharging channel, the upper sealing plate can be arranged in the upper wall of the valve control cavity in a vertically sliding mode, the lower end of the upper sealing plate extends into the valve control cavity, a main control sliding plate is fixedly arranged in the valve control cavity, the left sealing plate can be arranged in the left wall of the valve control cavity in a horizontally sliding mode, the right end of the left sealing plate extends into the valve control cavity, a driven sliding plate is fixedly arranged in the valve control cavity, and a push-pull rod is hinged between the lower end of the right end face of the driven sliding plate and the.

4. The automobile exhaust waste heat recycling device according to claim 3, characterized in that: and a spring is fixedly connected between the upper end of the main control sliding plate and the upper wall of the valve control cavity.

5. The automobile exhaust waste heat recycling device according to claim 3, characterized in that: temperature control device is including locating the air chamber of valve accuse chamber downside, the gliding division board that is equipped with from top to bottom in the air chamber, the division board will divide into two parts from top to bottom in the air chamber, the division board is sealed air chamber lower part portion, the fixed catch bar that is equipped with in division board upper end, the catch bar upper end extend to in the valve accuse intracavity and with the terminal surface offsets under the main control slide, be equipped with the temperature conductor in the air chamber lower wall, the circulation has outside air in the temperature conductor, and then will the air temperature of air intracavity the latter half keeps unanimous with ambient temperature, drives the division board through the expend with heat and contract with cold of air and removes.

6. The automobile exhaust waste heat recycling device according to claim 5, characterized in that: the air cavity right side is equipped with the chamber of bleeding, the rotatable pivot that is equipped with between the preceding back wall of the intracavity of bleeding, the outer disc annular array of pivot just fixedly is equipped with the leaf of bleeding, the chamber right wall intercommunication of bleeding is equipped with the inlet port that the opening is backward, the chamber lower wall intercommunication of bleeding is equipped with the gas transmission hole, the gas transmission hole extend left and communicate in temperature conductor right-hand member, temperature conductor left end intercommunication is equipped with the venthole that the opening is backward.

7. The automobile exhaust waste heat recycling device according to claim 1, characterized in that: the utility model discloses a fan assembly, including exhaust duct, fan shaft, fan cavity, sprocket chamber, exhaust duct rear wall intercommunication is equipped with the diffluence pass, diffluence pass rear side intercommunication is equipped with fan chamber, the rotatable fan shaft that is equipped with in fan chamber rear wall center, the fixed fan that is equipped with in fan shaft front end, fan chamber rear wall just in the fan off-axial side is equipped with annular gas collection chamber, the outer circular wall right-hand member intercommunication in gas collection chamber is equipped with the gas vent of opening right, fan chamber downside with the exhaust chamber rear side is equipped with the sprocket chamber, fan shaft rear end extends to the sprocket intracavity is fixed and is equipped with drive sprocket, the pivot rear end extends to.

8. The automobile exhaust waste heat recycling device according to claim 1, characterized in that: the electric control device comprises a control cavity arranged on the right side of the valve control cavity, a control motor is fixedly arranged in the lower wall of the control cavity, the upper end of the control motor is in power connection with a control screw rod, a control block which can slide up and down in the control cavity is in threaded connection with the control screw rod, and the left end of the control block can move into the valve control cavity and is abutted to the right end of the lower end face of the main control sliding plate.

9. The automobile exhaust waste heat recycling device according to claim 1, characterized in that: the heat preservation layer is fixedly arranged in the circumferential wall of the air inlet pipeline, a connector which is the same as the left opening of the air inlet pipeline is fixedly arranged on the left end face of the recoverer, and the connector can be connected with an automobile exhaust pipe.

Technical Field

The invention relates to the technical field of automobile exhaust treatment, in particular to an automobile exhaust waste heat recycling device.

Background

Automobile exhaust is exhaust gas generated by engine combustion energy, contains more heat and is directly discharged into the atmosphere, so that the utilization rate of energy is lower, and when the room temperature is lower, the waste heat in the exhaust gas is recovered and then has multiple purposes, so that the automobile exhaust gas can be used for waste heat engines and the like. And automobile exhaust waste heat recovery device among the prior art remains throughout to tail gas waste heat recovery, and is not big to the recovery of waste heat in hot summer, still can lead to the equipment temperature too high and damage to can't adjust the rate of recovery to the waste heat according to outdoor temperature, it is comparatively inconvenient to use. The present invention sets forth a device that solves the above problems.

Disclosure of Invention

The technical problem is as follows:

the traditional device for recovering the waste heat of the automobile exhaust can always keep recovering the waste heat after being installed, cannot automatically adjust the recovery rate of the waste heat according to the outdoor temperature, and is inconvenient to use.

In order to solve the above problems, the present embodiment provides an automobile exhaust waste heat recycling device, which comprises a recoverer, a heat collector is fixedly arranged in the recoverer, the left side of the heat collector is communicated with an air inlet pipeline with a left opening, the right side of the heat collector is communicated with an air outlet pipeline with a right opening, the filtered automobile exhaust is conveyed into the heat collector through the air inlet pipeline, heat in the air is extracted and stored through the heat collector, exhaust gas is discharged through the air outlet pipeline, the left end of the lower wall of the air inlet pipeline is communicated with a left straight exhaust channel with a downward opening, the lower wall of the air outlet pipeline is communicated with a right straight exhaust channel with a downward opening, the lower side of the recoverer is provided with a connecting pipe, and the left end and the right end of the connecting pipe are fixedly connected to the left end and the right end of the lower end face, a communicating pipeline penetrates through the connecting pipe and communicates the left straight discharging channel with the right straight discharging channel, a valve device is arranged at the lower side of the air inlet pipeline and at the right side of the left straight exhaust channel, an upper sealing plate which can extend into the air inlet pipeline and a left sealing plate which can extend into the left straight exhaust channel are arranged in the valve device, the lower side of the valve device is provided with a temperature control device which can adjust the opening and closing degree of the upper sealing plate and the left sealing plate according to the outside temperature, when the outside temperature is higher, the waste heat recovery significance of the tail gas is not great, the tail gas is directly discharged, when the external temperature is lower, and recovering the waste heat of the tail gas, wherein an electric control device is arranged on the right side of the valve device, and the opening degree of the upper sealing plate and the opening degree of the left sealing plate can be artificially controlled through the electric control device.

Preferably, when the upper sealing plate seals the air inlet pipeline, the left sealing plate is opened, the tail gas entering the air inlet pipeline is directly discharged through the left straight exhaust channel, the communicating pipeline and the air outlet pipeline, when the upper sealing plate is opened, the left sealing plate seals the left straight exhaust channel, and the gas enters the heat collector from the air inlet pipeline for heat collection and then is discharged through the air outlet pipeline.

The valve device comprises an air inlet pipeline and a valve control cavity arranged on the right side of the left direct discharging channel, an upper sealing plate can be arranged in the upper wall of the valve control cavity in a vertically sliding mode, the lower end of the upper sealing plate extends into the valve control cavity, a main control sliding plate is fixedly arranged in the valve control cavity, a left sealing plate can be arranged in the left wall of the valve control cavity in a horizontally sliding mode, the right end of the left sealing plate extends into the valve control cavity, a driven sliding plate is fixedly arranged in the valve control cavity, and a push-pull rod is hinged to the position between the lower end of the right end face of the driven sliding plate and.

Preferably, a spring is fixedly connected between the upper end of the main control sliding plate and the upper wall of the valve control cavity, the elasticity of the spring is small, and the spring provides power for the main control sliding plate to slide downwards.

The temperature control device comprises an air cavity arranged on the lower side of the valve control cavity, a partition plate is arranged in the air cavity and can slide up and down, the partition plate divides the air cavity into an upper part and a lower part, the lower part of the air cavity is sealed by the partition plate, a push rod is fixedly arranged at the upper end of the partition plate, the upper end of the push rod extends into the valve control cavity and abuts against the lower end face of the main control slide plate, a temperature conductor is arranged in the lower wall of the air cavity, external air flows through the temperature conductor, the air temperature of the lower part of the air cavity is kept consistent with the external temperature, and the partition plate is driven to move by expansion and contraction of the air.

Preferably, the air chamber right side is equipped with the extraction chamber, the rotatable pivot that is equipped with between the preceding back wall of the intracavity of extracting air, the excircle facial annular array of pivot just fixes and is equipped with the leaf of extracting air, the right wall intercommunication of extraction chamber is equipped with the inlet port that the opening is backward, the lower wall intercommunication of extraction chamber is equipped with the gas transmission hole, the gas transmission hole extend left and communicate in the temperature conductor right-hand member, temperature conductor left end intercommunication is equipped with the venthole that the opening is backward.

Beneficially, the pipeline rear wall intercommunication of giving vent to anger is equipped with the diffluence pass, the diffluence pass rear side intercommunication is equipped with the fan chamber, the rotatable fan axle that is equipped with in fan chamber rear wall center, the fixed fan that is equipped with in fan axle front end, fan chamber rear wall just in the fan off-axial side is equipped with annular gas collection chamber, the outer circular wall right-hand member intercommunication in gas collection chamber is equipped with the gas vent to the right of opening, fan chamber downside with the chamber rear side of bleeding is equipped with the sprocket chamber, fan axle rear end extends to the sprocket intracavity is fixed and is equipped with drive sprocket, the pivot rear end extends to the sprocket intracavity is fixed and is equipped with driven sprocket, driven sprocket with around being equipped with the chain between the drive sprocket.

The electric control device comprises a control cavity arranged on the right side of the valve control cavity, a control motor is fixedly arranged in the lower wall of the control cavity, the upper end of the control motor is in power connection with a control screw rod, a control block which can slide up and down in the control cavity is in threaded connection with the control screw rod, and the left end of the control block can move into the valve control cavity and abut against the right end of the lower end face of the main control sliding plate.

Preferably, an insulating layer is fixedly arranged in the circumferential wall of the air inlet pipeline, a connector which is the same as the left opening of the air inlet pipeline is fixedly arranged on the left end face of the recoverer, and the connector can be connected with an automobile exhaust pipe.

The invention has the beneficial effects that: the recovery rate of the waste heat in the automobile exhaust can be adjusted according to the outdoor temperature, when the outdoor temperature is higher, the recovery rate of the waste heat is stopped, when the outdoor temperature is lower, the recovery rate of the waste heat can be adaptively adjusted, the lower the temperature is, the higher the recovery rate is, and the recovery rate of the waste heat can be artificially controlled.

Drawings

For ease of illustration, the invention is described in detail by the following specific examples and figures.

FIG. 1 is a schematic view of the overall structure of an automobile exhaust waste heat recycling device according to the present invention;

FIG. 2 is an enlarged view of the structure of "A" in FIG. 1;

FIG. 3 is a schematic view of the structure in the direction "B-B" of FIG. 1;

FIG. 4 is a schematic view of the structure in the direction "C-C" of FIG. 1;

FIG. 5 is a schematic view of the structure in the direction "D-D" of FIG. 4.

Detailed Description

The invention will now be described in detail with reference to fig. 1-5, for ease of description, the orientations described below will now be defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The invention relates to a device for recycling waste heat of automobile exhaust, which is mainly applied to the recycling work of the waste heat of the automobile exhaust, and the invention is further explained by combining the attached drawings of the invention as follows:

the invention relates to a device for recycling waste heat of automobile exhaust, which comprises a recoverer 11, wherein a heat collector 12 is fixedly arranged in the recoverer 11, the left side of the heat collector 12 is communicated with an air inlet pipeline 13 with a left opening, the right side of the heat collector 12 is communicated with an air outlet pipeline 14 with a right opening, the filtered automobile exhaust is conveyed into the heat collector 12 through the air inlet pipeline 13, heat in air is extracted and stored through the heat collector 12, waste gas is discharged through the air outlet pipeline 14, the left end of the lower wall of the air inlet pipeline 13 is communicated with a left straight exhaust channel 15 with a downward opening, the lower wall of the air outlet pipeline 14 is communicated with a right straight exhaust channel 16 with a downward opening, a connecting pipe 17 is arranged at the lower side of the recoverer 11, two ends at the left end and the right end of the connecting pipe 17 are fixedly connected with the, a communication pipeline 18 penetrates through the connecting pipe 17, the communication pipeline 18 communicates the left straight drainage channel 15 with the right straight drainage channel 16, a valve device 101 is arranged at the lower side of the air inlet pipe 13 and at the right side of the left straight exhaust channel 15, an upper sealing plate 19 which can extend into the air inlet duct 13 and a left sealing plate 20 which can extend into the left inline passage 15 are provided in the valve device 101, a temperature control device 102 is disposed under the valve device 101, the temperature control device 102 can adjust the opening and closing degree of the upper sealing plate 19 and the left sealing plate 20 according to the external temperature, when the external temperature is high, the waste heat recovery significance of the tail gas is not great, the tail gas is directly discharged, when the external temperature is lower, the exhaust gas waste heat recovery is carried out, the electric control device 103 is arranged on the right side of the valve device 101, the opening degree of the upper sealing plate 19 and the left sealing plate 20 can be manually controlled by the electric control device 103.

Advantageously, when the upper sealing plate 19 seals the inlet duct 13, the left sealing plate 20 is opened, and the exhaust gas entering the inlet duct 13 is directly discharged through the left straight exhaust channel 15, the communication duct 18 and the outlet duct 14, and when the upper sealing plate 19 is opened, the left sealing plate 20 closes the left straight exhaust channel 15, and the gas enters the heat collector 12 from the inlet duct 13 for heat collection and then is discharged through the outlet duct 14.

According to an embodiment, the valve device 101 is described in detail below, the valve device 101 includes a valve control chamber 21 disposed on the air intake duct 13 and on the right side of the left direct exhaust passage 15, the upper sealing plate 19 is slidably disposed in the upper wall of the valve control chamber 21 up and down, the lower end of the upper sealing plate 19 extends into the valve control chamber 21 and is fixedly provided with a main control slide plate 22, the left sealing plate 20 is slidably disposed in the left wall of the valve control chamber 21 left and right, the right end of the left sealing plate 20 extends into the valve control chamber 21 and is fixedly provided with a driven slide plate 23, and a push-pull rod 24 is hinged between the lower end of the right end face of the driven slide plate 23 and the left end face of the main control slide plate 22.

Advantageously, a spring 25 is fixedly connected between the upper end of the main control sliding plate 22 and the upper wall of the valve control cavity 21, the elasticity of the spring 25 is small, and the spring 25 provides power for the main control sliding plate 22 to slide downwards.

According to an embodiment, the temperature control device 102 is described in detail below, the temperature control device 102 includes an air cavity 26 disposed at a lower side of the valve control cavity 21, a partition plate 27 is disposed in the air cavity 26 in a vertically slidable manner, the partition plate 27 partitions the air cavity 26 into an upper portion and a lower portion, the partition plate 27 seals the lower portion of the air cavity 26, a push rod 28 is fixed to an upper end of the partition plate 27, an upper end of the push rod 28 extends into the valve control cavity 21 and abuts against a lower end face of the main control slide plate 22, a temperature conductor 29 is disposed in a lower wall of the air cavity 26, outside air flows through the temperature conductor 29, so that an air temperature of a lower portion of the air cavity 26 is kept consistent with the outside temperature, and the partition plate 27 is driven to move by thermal expansion of the air.

Beneficially, an air pumping cavity 30 is arranged on the right side of the air cavity 26, a rotating shaft 31 is rotatably arranged between the front wall and the rear wall in the air pumping cavity 30, an annular array of the outer circular surface of the rotating shaft 31 is fixedly provided with air pumping blades 32, the right wall of the air pumping cavity 30 is communicated with an air inlet hole 33 with a backward opening, the lower wall of the air pumping cavity 30 is communicated with an air delivery hole 34, the air delivery hole 34 extends leftwards and is communicated with the right end of the temperature conductor 29, and the left end of the temperature conductor 29 is communicated with an air outlet hole 35 with a backward opening.

Beneficially, the rear wall of the air outlet duct 14 is provided with a diversion port 36 in a communicating manner, the rear side of the diversion port 36 is provided with a fan cavity 37 in a communicating manner, the center of the rear wall of the fan cavity 37 is rotatably provided with a fan shaft 41, the front end of the fan shaft 41 is fixedly provided with a fan 38, the rear wall of the fan cavity 37 is provided with an annular air collecting cavity 39 outside the fan shaft 41, the right end of the outer circular wall of the air collecting cavity 39 is provided with an exhaust port 40 with a rightward opening in a communicating manner, the lower side of the fan cavity 37 and the rear side of the air suction cavity 30 are provided with a sprocket cavity 42, the rear end of the fan shaft 41 extends into the sprocket cavity 42 and is fixedly provided with a driving sprocket 43, the rear end of the rotating shaft 31 extends into the sprocket cavity 42 and is fixedly provided with a driven sprocket 44, and a chain 45 is wound.

According to an embodiment, the electrical control device 103 is described in detail below, the electrical control device 103 includes a control cavity 46 with a chain arranged on the right side of the valve control cavity 21, a control motor 47 is fixedly arranged in the lower wall of the control cavity 46, a control screw 48 is dynamically connected to the upper end of the control motor 47, a control block 49 connected to the control screw 48 in a threaded manner is arranged in the control cavity 46 in a vertically sliding manner, and the left end of the control block 49 can move into the valve control cavity 21 and abut against the right end of the lower end face of the main control slide plate 22.

Beneficially, an insulating layer 50 is fixedly arranged in the circumferential wall of the air inlet pipe 13, a connecting port 51 which is the same as the left opening of the air inlet pipe 13 is fixedly arranged on the left end face of the recoverer 11, and the connecting port 51 can be connected with an automobile exhaust pipe.

The following describes in detail the use steps of the device for recycling waste heat from automobile exhaust with reference to fig. 1 to 5:

in the initial state, the outdoor temperature is equal to or higher than the maximum outdoor temperature requirement, the main control slide plate 22 is at the upper limit position, the upper sealing plate 19 is at the upper limit position and seals the air inlet pipeline 13, the driven slide plate 23 and the left sealing plate 20 are at the right limit position and open the left straight exhaust passage 15, the control block 49 is at the lower limit position and is retracted in the control cavity 46, the division plate 27 is at the upper limit position, the upper end of the push rod 28 is tightly pressed against the main control slide plate 22, the spring 25 is in the compression state, and the pressure of the air in the air cavity 26 on the division plate 27 is greater than or equal to the elastic force of the spring 25 on the main control.

When the automobile runs, because the weather is hot, the waste heat recovery of the automobile exhaust is not carried out, the exhausted exhaust flows into the air inlet pipeline 13 through the connecting port 51 after being purified, flows into the air outlet pipeline 14 through the left straight-line channel 15, the communicating pipeline 18 and the right straight-line channel 16 and is exhausted, the air in the air outlet pipeline 14 flows into the fan cavity 37 through the branch port 36 and blows the fan 38 to rotate, the air is exhausted through the air collecting cavity 39 and the air outlet 40, the fan 38 drives the driving chain wheel 43 to rotate through the fan shaft 41, the driven chain wheel 44 is driven to rotate through the chain 45, the air exhaust blade 32 is driven to rotate through the rotating shaft 31, the air in the air is sucked into the air exhaust cavity 30 through the air inlet 33 and is input into the temperature conductor 29 through the air delivery hole 34, the heat exchange is carried out on the temperature of the air in the air cavity 26, and the temperature in the air cavity 26 can be ensured, the gas after heat exchange in the temperature transmitter 29 is discharged to the air through the air outlet hole 35;

when the outside air temperature is reduced, the air in the air cavity 26 is cooled through the temperature transmitter 29, the air in the air cavity 26 contracts, and further drives the partition plate 27 to move downwards and drive the push rod 28 to move downwards, the main control sliding plate 22 moves downwards under the elasticity of the spring 25 and further drives the upper sealing plate 19 to move downwards and open the air inlet pipeline 13, at the moment, the main control sliding plate 22 drives the driven sliding plate 23 to move left through the push-pull rod 24 and further drives the left sealing plate 20 to move left and further drive the left direct exhaust passage 15 to be sealed, when the temperature in the air cavity 26 is lower than the minimum required temperature, the partition plate 27 moves to the lower limit position, at the moment, the upper sealing plate 19 moves to the lower limit position and completely opens the air inlet pipeline 13, the left sealing plate 20 moves to the left limit position and completely seals the left direct exhaust passage 15, at the moment, the tail gas entering the air inlet pipeline 13 flows into the heat collector 12 to absorb heat, when the recovery degree of waste heat needs to be artificially controlled, the control motor 47 is started and drives the control screw 48 to rotate, the control block 49 is driven to ascend through threaded connection, the control block 49 can push the main control sliding plate 22 to ascend and close or reduce tail gas flowing into the heat collector 12 from the air inlet pipeline 13 after abutting against the main control sliding plate 22, in order to prevent overhigh temperature of automobile equipment caused by waste heat recovery, the heat recovery cannot be increased through artificial control, only the heat recovery can be reduced, namely when the control block 49 is adjusted to the required height, the main control sliding plate 22 is positioned on the upper side of the control block 49 and does not abut against the control block 49, and the descending of the main control sliding plate 22 can only be adjusted by external air.

The invention has the beneficial effects that: the recovery rate of the waste heat in the automobile exhaust can be adjusted according to the outdoor temperature, when the outdoor temperature is higher, the recovery rate of the waste heat is stopped, when the outdoor temperature is lower, the recovery rate of the waste heat can be adaptively adjusted, the lower the temperature is, the higher the recovery rate is, and the recovery rate of the waste heat can be artificially controlled.

In the above manner, a person skilled in the art can make various changes depending on the operation mode within the scope of the present invention.