Heat exchange and noise reduction device, exhaust system, engine and electric equipment

Abstract

The utility model discloses a heat exchange noise reduction device, exhaust system, engine and electric equipment, the heat exchange noise reduction device comprises an exhaust pipe, a control valve and a heat exchange assembly, the exhaust pipe is provided with an inlet, an outlet and an exhaust runner, and the exhaust pipe at least has a first state and a second state; the control valve is arranged on the exhaust pipe and controls switching between the first state and the second state. The heat exchange assembly is arranged on the exhaust pipe, at least one gas flow channel is formed in the heat exchange assembly, the two ends of the gas flow channel communicate with the inlet and the outlet correspondingly, and the heat exchange assembly comprises a heat absorption piece; when the exhaust pipe is in the first state, the exhaust runner is closed, the inlet communicates with the outlet through the gas runner, and gas is suitable for flowing through the gas runner to exchange heat with the heat absorption piece. When the exhaust pipe is in the second state, the inlet and the outlet are at least communicated through the exhaust flow channel. According to the heat exchange and noise reduction device, heat recovery, silence and noise reduction are achieved at the same time, the use performance is improved, the occupied space is reduced, and installation is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric equipment, especially to a heat exchange noise reduction device, an exhaust system, an engine and electric equipment. BACKGROUND

[0002] In the related art, the exhaust gas after being treated by the catalytic converter has a high temperature, and the high temperature affects the flow rate of the exhaust gas, so that the flow rate of the gas is fast and the noise is large. Moreover, the heat in the exhaust gas is discharged into the atmosphere with the exhaust gas, resulting in waste of energy. SUMMARY

[0003] The utility model discloses at least one of the technical problems in the prior art. Therefore, one purpose of the utility model is to provide a heat exchange noise reduction device, which can recover heat and reduce noise at the same time, improve the use performance, and reduce the occupied space and facilitate installation.

[0004] A second purpose of the utility model is to provide an exhaust system using the heat exchange noise reduction device.

[0005] A third purpose of the utility model is to provide an engine using the exhaust system.

[0006] A fourth purpose of the utility model is to provide an electric equipment using the exhaust system or the engine.

[0007] According to the heat exchange noise reduction device of the first aspect of the utility model, the exhaust pipe has an inlet, an outlet and an exhaust flow channel, and the exhaust pipe has at least a first state and a second state. The control valve is arranged on the exhaust pipe, and the control valve controls the switching of the first state and the second state. The heat exchange assembly is arranged on the exhaust pipe, and at least one gas flow channel is formed on the heat exchange assembly. The two ends of the gas flow channel are respectively communicated with the inlet and the outlet. The heat exchange assembly includes a heat absorbing member. When the exhaust pipe is in the first state, the exhaust flow channel is closed, the inlet is communicated with the outlet through the gas flow channel, and the gas is suitable for flowing through the gas flow channel and heat exchanging with the heat absorbing member. When the exhaust pipe is in the second state, the inlet and the outlet are communicated through at least the exhaust flow channel.

[0008] According to the heat exchange noise reduction device of the utility model, the heat exchange noise reduction device can recover heat and reduce noise at the same time, improve the use performance of the heat exchange noise reduction device. In addition, the heat exchange assembly and the control valve are integrated, which reduces the occupied space of the heat exchange noise reduction device and facilitates the installation of the heat exchange noise reduction device.

[0009] According to some embodiments of the present application, the heat exchange component comprises a heat exchange element, the heat exchange element is sleeved on the exhaust pipe, and the heat exchange element is located between the exhaust pipe and the heat absorption element, and the gas flow channel is formed on the heat exchange element.

[0010] According to some embodiments of the present application, the gas flow channel is multiple, and the multiple gas flow channels are arranged along the circumference of the exhaust pipe.

[0011] According to some embodiments of the present application, each gas flow channel extends along the length direction of the exhaust pipe.

[0012] According to some embodiments of the present application, the total cross-sectional area of the multiple gas flow channels is S, wherein the S satisfies: S≤3 / 4 times the cross-sectional area of the exhaust pipe.

[0013] According to some embodiments of the present application, the multiple gas flow channels are configured to form multiple gas flow channel groups, each gas flow channel group comprises multiple gas flow channels arranged along the circumference of the exhaust pipe, and the multiple gas flow channel groups are arranged at intervals along the radial direction of the exhaust pipe.

[0014] According to some embodiments of the present application, the heat exchange element is a silicon carbide element or a metal element.

[0015] According to some embodiments of the present application, the heat absorption element comprises a heat absorption shell, the heat absorption shell is sleeved on the heat exchange element, and the heat absorption shell and the outer peripheral surface of the heat exchange element jointly define a heat exchange flow channel, the heat exchange flow channel and the gas flow channel are independent of each other, and when the exhaust pipe is in the first state, the gas is suitable for flowing through the fluid heat exchange in the gas flow channel and the heat exchange flow channel.

[0016] According to some embodiments of the present application, the heat exchange flow channel extends along the circumference of the heat exchange element.

[0017] According to some embodiments of the present application, the control valve comprises a valve body, a valve plate arranged in the exhaust pipe, an actuating mechanism, one end of the actuating mechanism is connected with the valve body, the other end of the actuating mechanism is connected with the valve plate, and a controller arranged on the valve body, the controller controls the actuating mechanism to drive the valve plate to move and switch between the first state and the second state.

[0018] According to some embodiments of the present application, the control valve further comprises an elastic element, the elastic element is arranged in the valve body, and the elastic element is sleeved on the actuating mechanism, one end of the elastic element is connected with the actuating mechanism, the other end of the elastic element is connected with the valve body, and the elastic element makes the valve plate always keep in the first state through the actuating mechanism.

[0019] According to the exhaust system of the second aspect of the present application, the heat exchange and noise reduction device of the first aspect of the present application is used.

[0020] According to the engine of the third aspect of the present application, the exhaust system of the second aspect of the present application is used.

[0021] According to the electric device of the fourth aspect of the present application, the exhaust system of the second aspect of the present application or the engine of the third aspect of the present application is used.

[0022] According to some embodiments of the present application, the electric device further comprises a heat exchange system, which is in communication with the heat exchange flow channel of the exhaust system.

[0023] The additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0024] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0025] Figure 1 is a schematic view of the heat exchange and noise reduction device according to the embodiments of the present application;

[0026] Figure 2 is a side view of the heat exchange and noise reduction device according to the embodiments of the present application;

[0027] Figure 3 is a cross-sectional view of the heat exchange and noise reduction device according to the embodiments of the present application, in which the exhaust pipeline is in the first state;

[0028] Figure 4 is a cross-sectional view of another case of the heat exchange and noise reduction device according to the embodiments of the present application, in which the exhaust pipeline is in the second state;

[0029] Figure 5 is a schematic view of the heat exchange component of the heat exchange and noise reduction device according to the embodiments of the present application;

[0030] Figure 6 is a schematic view of the heat absorption component of the heat exchange and noise reduction device according to the embodiments of the present application;

[0031] Figure 7 is a cross-sectional view of the heat absorption component of the heat exchange and noise reduction device according to the embodiments of the present application;

[0032] Figure 8is a schematic view of a control valve of the heat exchange and noise reduction device according to the embodiment of the present application;

[0033] Figure 9 is a schematic view of a controller of the heat exchange and noise reduction device according to the embodiment of the present application;

[0034] Figure 10 is a schematic view of an exhaust system according to the embodiment of the present application.

[0035] Reference signs:

[0036] 100, heat exchange and noise reduction device;

[0037] 1, exhaust pipe; 11, inlet; 12, outlet; 13, exhaust flow channel;

[0038] 2, control valve; 21, valve body; 211, heat shield; 22, valve plate;

[0039] 23, actuator; 24, controller; 25, elastic member;

[0040] 3, heat exchange assembly; 31, heat exchange member; 311, gas flow channel group; 3111, gas flow channel;

[0041] 32, heat absorption member; 321, heat absorption housing; 322, heat exchange flow channel;

[0042] 323, fluid inlet pipe; 3231, fluid inlet;

[0043] 324, fluid outlet pipe; 3241, fluid outlet;

[0044] 200, exhaust system;

[0045] 201, exhaust body. DETAILED DESCRIPTION

[0046] The embodiments of the present application will be described in detail below, and the embodiments described with reference to the accompanying drawings are exemplary, and the following description is made below with reference to Figures 1-9 The heat exchange and noise reduction device 100 according to the first aspect of the present application is described below, and the heat exchange and noise reduction device 100 can be used for an electrical equipment (not shown in the figure), and in the following description of the present application, the heat exchange and noise reduction device 100 is taken as an example for the electrical equipment.

[0047] As shown in Figure 1 , Figure 3 and Figure 5 , the heat exchange and noise reduction device 100 according to the first aspect of the present application comprises an exhaust pipe 1, a control valve 2 and a heat exchange assembly 3.

[0048] Specifically, the exhaust pipe 1 has an inlet 11, an outlet 12 and an exhaust flow channel 13, and the exhaust pipe 1 has at least a first state and a second state. A control valve 2 is arranged on the exhaust pipe 1, and the control valve 2 controls switching between the first state and the second state. A heat exchange assembly 3 is arranged on the exhaust pipe 1, and the heat exchange assembly 3 has at least one gas flow channel 3111 formed thereon, and the two ends of the gas flow channel 3111 are respectively communicated with the inlet 11 and the outlet 12, and the heat exchange assembly 3 comprises a heat absorbing member 32.

[0049] For example, in the examples of Figure 2 and Figure 3 , the inlet 11 is formed at the left end of the exhaust pipe 1, the outlet 12 is formed at the right end of the exhaust pipe 1, and the exhaust flow channel 13 communicates the inlet 11 with the outlet 12. The left end of the gas flow channel 3111 is communicated with the inlet 11, and the right end of the gas flow channel 3111 is communicated with the outlet 12. The heat absorbing member 32 is arranged on the exhaust pipe 1. In this way, the structure is simple, easy to install, and the production efficiency of the heat exchange and noise reduction device 100 is improved.

[0050] In combination with Figure 3 and Figure 4 , when the exhaust pipe 1 is in the first state, the exhaust flow channel 13 is closed, the inlet 11 is communicated with the outlet 12 through the gas flow channel 3111, and the gas is suitable for flowing through the gas flow channel 3111 and the heat absorbing member 32 for heat exchange. When the exhaust pipe 1 is in the second state, the inlet 11 and the outlet 12 are communicated at least through the exhaust flow channel 13.

[0051] For example, in the examples of Figure 3 and Figure 4 , when the exhaust pipe 1 is in the first state, the exhaust flow channel 13 is closed, the gas flows along the gas flow channel 3111, and the flow path of the gas is shown by arrow B in Figure 3 . When the electric device is a vehicle, when the vehicle is at idle speed, low rotation speed or medium rotation speed, the control valve 2 controls the exhaust pipe 1 to be in the first state, that is, the exhaust flow channel 13 is completely closed, the exhaust gas generated by the engine of the vehicle is high-temperature gas, the high-temperature gas flows along the gas flow channel 3111, and in the process of flowing in the gas flow channel 3111, the heat absorbing member 32 absorbs the heat in the high-temperature gas, so that the temperature of the gas is reduced, thereby reducing the flow speed of the gas, reducing the noise of the exhaust gas, and optimizing the acoustic quality. The absorbed heat can also be applied to other places to achieve use (for example, to achieve rapid warm-up of the powertrain of the vehicle, cabin auxiliary heating, battery heat preservation, etc.), so as to achieve the effect of reducing fuel consumption, and also make full use of heat energy, thereby improving the utilization rate of energy.

[0052] When the exhaust pipe 1 is in the second state, the exhaust flow channel 13 is in a fully open state, part of the gas flows along the gas flow channel 3111, and the other part of the gas flows along the exhaust flow channel 13, and the flow path of the gas is shown by arrow B in Figure 4As shown by the middle arrow C. When the vehicle is at high speed, the load demand increases, the controller 24 controls the exhaust flow passage 13 to be in the second state, that is, the exhaust flow passage 13 is fully open, a large amount of gas flows out through the exhaust flow passage 13, the cross-sectional area through which the gas passes is large, and the exhaust resistance is low, so as to meet the power performance of the vehicle. A small amount of gas passes through the gas flow passage 3111, thereby realizing the function of not recycling heat.

[0053] The exhaust pipe 1 further comprises a partially open state between the first state and the second state, and the noise of the gas passing through is eliminated by controlling the opening of the exhaust pipe 1 to control the cross-sectional area of the gas passing through. That is, the vehicle is at different speeds and output powers, and the control valve 2 controls the opening of the exhaust pipe 1 to realize the elimination of noise. For example, when the speed or output power of the vehicle is large, the control valve 2 controls the opening of the exhaust pipe 1 to be large, that is, the cross-sectional area of the gas passing through is large; when the speed or output power of the vehicle is small, the control valve 2 controls the opening of the exhaust pipe 1 to be small, that is, the cross-sectional area of the gas passing through is small, so as to realize the elimination of noise.

[0054] In addition, the heat exchange and noise reduction device 100 integrally arranges the heat exchange assembly 3 and the control valve 2 together, and simultaneously realizes the functions of heat recovery and noise reduction of the gas, and improves the use performance of the heat exchange and noise reduction device 100. Compared with the waste heat recovery device and the active noise valve arranged independently in the prior art, the arrangement space of the heat exchange and noise reduction device 100 is reduced, the heat exchange and noise reduction device 100 is convenient to install, and the cost of components is also reduced.

[0055] According to the heat exchange and noise reduction device 100 of the utility model, the heat exchange and noise reduction device 100 can simultaneously realize the functions of heat recovery and noise reduction of the gas, and improve the use performance of the heat exchange and noise reduction device 100. In addition, the heat exchange assembly 3 and the control valve 2 are integrally arranged, and the occupied space of the heat exchange and noise reduction device 100 is also reduced, so that the heat exchange and noise reduction device 100 is convenient to install.

[0056] According to some embodiments of the utility model, referring to Figure 3 The heat exchange assembly 3 comprises a heat exchange piece 31, the heat exchange piece 31 is sleeved on the exhaust pipe 1, and the heat exchange piece 31 is located between the exhaust pipe 1 and the heat absorption piece 32, and the gas flow passage 3111 is formed on the heat exchange piece 31.

[0057] For example, in Figure 3In the example, the heat absorber 32 is fitted onto the outer periphery of the heat exchanger 31. This arrangement ensures that the heat exchanger 31 and the heat absorber 32 are in contact. When high-temperature gas passes through the heat exchanger 31, it facilitates heat exchange between the fluid (e.g., cooling water) within the heat absorber 32 and the high-temperature gas, thereby improving heat exchange efficiency and performance of the heat exchange assembly 3. Furthermore, after heat exchange, the gas temperature and flow rate are reduced, exhaust resistance is lowered, vehicle power and fuel economy are improved, and acoustic matching of the exhaust is facilitated, thus enabling acoustic adjustment.

[0058] Furthermore, referring to Figure 5 There are multiple gas flow channels 3111, which are arranged circumferentially along the exhaust pipe 1. In the description of this utility model, "multiple" means two or more. For example, in Figure 5 In the example, multiple gas channels 3111 are arranged at intervals along the circumference of the exhaust pipe 1, that is, multiple gas channels 3111 are arranged at intervals along the circumference of the heat exchanger 31. With this arrangement, the gas can pass smoothly along the circumference of the exhaust pipe 1 when passing through the multiple gas channels 3111, which improves the smoothness of gas passage, reduces the resistance of exhaust airflow, and thus further improves the acoustic quality.

[0059] According to some embodiments of this utility model, refer to Figure 4 and Figure 5 Each gas flow channel 3111 runs along the length of the exhaust pipe 1 (e.g., Figure 4 Extending in the left-right direction (as shown). For example, in Figure 4 and Figure 5 In the example, each gas flow channel 3111 extends through the heat exchanger 31 in the left-right direction. With this arrangement, each gas flow channel 3111 is arranged in a roughly straight line, allowing gas to pass directly through the gas flow channel 3111, which improves the smoothness of gas passage, reduces the resistance of exhaust airflow, and thus further improves the acoustic quality.

[0060] According to some embodiments of this utility model, refer to Figure 5 The total cross-sectional area of ​​the multiple gas flow channels 3111 is S, where S satisfies: S ≤ 3 / 4 times the cross-sectional area of ​​the exhaust pipe 1. For example, when the total cross-sectional area of ​​the multiple gas flow channels 3111 is greater than 3 / 4 times the cross-sectional area of ​​the exhaust pipe 1, the total cross-sectional area of ​​the multiple gas flow channels 3111 is larger, which increases the flow area of ​​the gas, resulting in a smaller sound expansion and a reduced noise reduction capacity of the airflow channel, thus generating more noise.

[0061] Therefore, by setting the total cross-sectional area sum S of the plurality of gas flow channels 3111 to satisfy S≤3 / 4 of the cross-sectional area of the exhaust pipe 1, the total cross-sectional area of the plurality of gas flow channels 3111 is reasonably set, thereby reducing the flow area of the gas, increasing the expansion ratio of the sound, improving the sound attenuation capability of the gas flow channel 3111, and thereby improving the acoustic quality. Moreover, the impedance of the exhaust noise is also increased, thereby reducing the noise sound pressure level of the exhaust to achieve the noise reduction function. It should be noted that, under the premise of satisfying the constant inner diameter of the heat exchange member 31, the cross-sectional area of the gas flow channel 3111, i.e., the flow area of the gas, can be reduced by reducing the outer diameter of the heat exchange member 31, so as to adjust according to the acoustic requirements to meet the acoustic requirements. In addition, the heat exchange efficiency required by the vehicle can be satisfied by increasing the length of the heat exchange member 31 in the left-right direction, and the size of the heat exchange member 31 can be adjusted according to the heat recovery requirements and acoustic requirements to meet the actual requirements of the vehicle.

[0062] According to some embodiments of the present application, referring to Figure 5 , the plurality of gas flow channels 3111 form a plurality of gas flow channel groups 311, each gas flow channel group 311 including a plurality of gas flow channels 3111 arranged along the circumference of the exhaust pipe 1, and the plurality of gas flow channel groups 311 are arranged in a radial direction of the exhaust pipe 1. For example, in the example shown in Figure 5 , three gas flow channel groups 311 are provided, and the three gas flow channel groups 311 are arranged in a radial direction of the exhaust pipe 1, and the cross-sectional shape of the heat exchange member 31 is substantially a honeycomb structure. In this way, the heat exchange area of the heat exchange member 31 is increased, thereby improving the heat exchange capability of the heat exchange member 31, and further improving the use performance of the heat exchange and noise reduction device 100. However, it is not limited to this, and it should be noted that the number of gas flow channel groups 311 can be set according to actual use conditions to meet actual requirements.

[0063] Optionally, the heat exchange member 31 is a silicon carbide member or a metal member. For example, when the heat exchange member 31 is a silicon carbide member, the silicon carbide member is a structural member prepared from a compound semiconductor material composed of silicon (Si) and carbon (C), and has advantages such as high thermal conductivity, high hardness, chemical corrosion resistance, high temperature resistance, and shock resistance. The theoretical thermal conductivity of the silicon carbide member is relatively high, reaching 270 W / m•K, which is 3-4 times that of a copper member, thereby improving the heat conduction capability of the heat exchange member 31, prolonging the service life of the heat exchange member 31, and further improving the heat exchange efficiency of the heat exchange assembly 3, facilitating long-term normal use of the heat exchange assembly 3. Moreover, the heat exchange member 31 also has advantages such as compact arrangement, small volume, and light weight. When the heat exchange member 31 is a metal member, the metal member has thermal conductivity and ductility, thereby allowing the heat exchange member 31 to exchange heat and be easy to produce.

[0064] According to some embodiments of the present application, referring to Figure 4The heat absorbing member 32 comprises a heat absorbing shell 321, which is sleeved on the heat exchanging member 31, and the heat absorbing shell 321 and the outer circumferential surface of the heat exchanging member 31 jointly define a heat exchanging flow channel 322, which is independent of the gas flow channel 3111, and when the exhaust pipe 1 is in the first state, the gas is adapted to flow through the gas flow channel 3111 and the fluid in the heat exchanging flow channel 322 for heat exchange.

[0065] For example, in the example of Figure 4 , the inner side surface of the heat absorbing shell 321 and the outer circumferential surface of the heat exchanging member 31 jointly define the heat exchanging flow channel 322, that is, the heat exchanging flow channel 322 is formed on the outer circumferential side of the gas flow channel 3111. When the exhaust pipe 1 is in the first state, the exhaust flow channel 13 is closed, and the gas passes through the exhaust pipe 1 along the gas flow channel 3111. When the gas passes through the gas flow channel 3111, the gas exchanges heat with the fluid in the heat exchanging flow channel 322, so that the temperature of the gas is reduced and the temperature of the fluid is increased, thereby facilitating heat exchange and improving heat exchange efficiency. In addition, the structure is simple and convenient to install. However, it is not limited thereto, for example, in the example of Figure 6 and Figure 7 , the heat exchanging flow channel 322 can also be formed on the heat absorbing shell 321, which facilitates the disassembly and installation of the heat absorbing shell 321 and the heat exchanging member 31.

[0066] According to some embodiments of the present application, referring to Figure 6 and Figure 7 , the heat exchanging flow channel 322 extends along the circumference of the heat exchanging member 31. In this way, the area of heat exchange between the fluid in the heat exchanging flow channel 322 and the heat exchanging member 31 is increased, thereby improving the heat exchange efficiency of the heat exchanging assembly 3. In addition, the fluid in the heat exchanging flow channel 322 extends along the circumference of the heat exchanging member 31, which facilitates the circulation of the fluid and improves the smoothness of the fluid flow, thereby facilitating further heat exchange.

[0067] According to some embodiments of the present application, referring to Figure 4 , Figure 8 and Figure 9 , the control valve 2 comprises a valve body 21, a valve plate 22, an actuator 23 and a controller 24.

[0068] Specifically, the valve plate 22 is arranged in the exhaust pipe 1. One end of the actuator 23 is connected to the valve body 21, and the other end of the actuator 23 is connected to the valve plate 22. The controller 24 is arranged on the valve body 21, and the controller 24 controls the actuator 23 to drive the valve plate 22 to move between the first state and the second state.

[0069] For example, in the example of Figure 4 and Figure 8In the example, one end of the actuator 23 is connected with the controller 24 on the valve body 21. The actuator 23 penetrates through the valve body 21, and the actuator 23 moves in the valve body 21, and the actuator 23 has a cylindrical structure. The controller 24 controls the rotation of the actuator 23 to drive the valve plate 22 to move in the exhaust pipe 1, so that the valve plate 22 is switched between the first state and the second state, or the valve plate 22 is located at a position between the first state and the second state. In this way, by controlling the movement of the valve 2 through the controller 24, the exhaust pipe 1 can be controlled to be in different states to adapt to different working conditions of the vehicle, thereby improving the use performance of the heat exchange and noise reduction device 100. In addition, by controlling the rotation angle of the valve plate 22, the function of controlling the valve 2 to be quiet and reduce noise is realized, and the use performance of the valve 2 is improved. The controller 24 is adapted to communicate with the control unit (ECU) of the engine, and the controller 24 controls the rotation of the actuator 23 by receiving the opening, closing and rotation angle signals transmitted by the ECU, so as to control the opening, closing and rotation angle of the valve plate 22.

[0070] When waste heat needs to be recovered, the ECU sends a waste heat recovery signal, and the ECU transmits a signal. The controller 24 receives the signal transmitted by the ECU, and the controller 24 controls the movement of the actuator 23 to make the valve plate 22 in the first state. In this way, the high-temperature gas entering the exhaust pipe 1 passes through the gas flow channel 3111, and the high-temperature gas flow exchanges heat with the fluid in the heat exchange flow channel 322 to recover heat. When waste heat does not need to be recovered, the ECU transmits a signal to the controller 24, and the controller 24 controls the movement of the valve plate 22 to make the valve plate 22 in the second state. The exhaust flow channel 13 is completely open, and the high-temperature gas will directly pass through the exhaust flow channel 13 and be discharged. The gas flow will not pass through the gas flow channel 3111 in large quantities, thereby realizing the function of not recovering heat. In addition, the use of the valve plate 22 can effectively reduce the back pressure of the engine at the rated power point, and better meet the acoustic requirements of the whole vehicle without affecting the back pressure.

[0071] The valve body 21 includes a heat shield 211 located on the side of the controller 24 facing the heat absorption member 32. The heat shield 211 is connected with the controller 24, and the heat shield 211 is adapted to the outer peripheral surface of the controller 24. In this way, the heat shield 211 protects the controller 24. After the fluid in the heat absorption member 32 absorbs heat, the temperature of the heat absorption member 32 is relatively high, which avoids damage to the controller 24 under high temperature, thereby prolonging the service life of the controller 24.

[0072] Optionally, referring to Figure 2 and Figure 6The heat absorbing piece 32 further comprises a fluid inlet pipe 323 and a fluid outlet pipe 324, one end of the fluid inlet pipe 323 is a fluid inlet 3231, and the other end of the fluid inlet pipe 323 is communicated with the heat exchange channel 322.

[0073] For example, in the example shown in Figure 2 and Figure 6 , the left end of the fluid inlet pipe 323 is the fluid inlet 3231, and the right end of the fluid inlet pipe 323 is communicated with the heat exchange channel 322. The left end of the fluid outlet pipe 324 is the fluid outlet 3241, and the right end of the fluid outlet pipe 324 is communicated with the heat exchange channel 322. In this way, the fluid in the heat exchange system flows into the fluid inlet pipe 323 from the fluid inlet 3231, enters the heat exchange channel 322, and then flows out from the fluid outlet 3241 along the fluid outlet pipe 324 after circulating along the circumference of the heat absorbing piece 31 in the heat exchange channel 322, thereby forming a circulating water path and facilitating the fluid to enter the heat exchange channel 322 and flow therein, and facilitating the normal use of the heat absorbing piece 32.

[0074] According to some embodiments of the present application, referring to Figure 8 , the control valve 2 further comprises an elastic piece 25 arranged in the valve body 21 and sleeved on the actuating mechanism 23, one end of the elastic piece 25 is connected with the actuating mechanism 23, and the other end of the elastic piece 25 is connected with the valve body 21, so that the valve plate 22 is always kept in the first state by the actuating mechanism 23.

[0075] For example, in the example shown in Figure 8 , the elastic piece 25 is sleeved on the outer circumferential side of the actuating mechanism 23, the upper end of the elastic piece 25 is connected with the actuating mechanism 23, and the lower end of the elastic piece 25 is connected with the valve body 21. When the valve plate 22 is in the first state, the elastic piece 25 is in the original state; when the valve plate 22 is in the second state, the elastic piece 25 is in the stretched state, and the elastic piece 25 provides a rebound force for the valve plate 22, that is, the elastic piece 25 provides a closing force for the valve plate 22, so that the valve plate 22 is also in the closed state under the action of the elastic piece 25 when the motor is abnormally inoperable, thereby improving the use performance of the control valve 2. The actuating mechanism 23 is formed with a first clamping groove (not shown in the figure), and the upper end of the elastic piece 25 is assembled in the first clamping groove. The valve body 21 is formed with a second clamping groove (not shown in the figure) corresponding to the position of the lower end of the elastic piece 25, and the lower end of the elastic piece 25 is assembled in the second clamping groove. In this way, the connection strength of the upper end of the elastic piece 25 with the actuating mechanism 23 is improved, the connection strength of the lower end of the elastic piece 25 with the valve body 21 is improved, and the use stability of the elastic piece 25 is further improved. It should be noted that the elastic piece 25 can be a spring piece, but is not limited thereto.

[0076] According to the second aspect of the utility model embodiment, the exhaust system 200 is referred to Figure 10 , comprising the heat exchange and noise reduction device 100 according to the first aspect of the utility model above.

[0077] For example, in the example of Figure 10 , the heat exchange and noise reduction device 100 is arranged on the exhaust system 200. Wherein, the exhaust system 200 comprises an exhaust body 201, the inlet 11 and the outlet 12 of the exhaust pipe 1 are communicated with the exhaust body 201 respectively, the exhaust body 201 comprises a catalytic converter (not shown in the figure) and a muffler (not shown in the figure), and the catalytic converter and the muffler are designed in an integrated form into the exhaust body 201.

[0078] The engine burns to generate exhaust gas, the exhaust gas is high-temperature gas, after the exhaust gas is purified by the catalytic converter, enters into the muffler, and the high-temperature gas in the muffler enters into the gas flow channel along the inlet, after heat exchange with the fluid in the heat exchange flow channel, enters into the exhaust body 201 along the outlet. By such arrangement, the waste heat recovery capacity of the exhaust system 200 is improved, the energy utilization rate is improved, and the noise of the exhaust system 200 when exhausting is also reduced. In addition, the use of the heat exchange and noise reduction device 100 in the exhaust system 200 reduces the boundary requirement of the muffler, solves the problem of insufficient arrangement volume of the muffler in the front compartment of the vehicle, can reduce the volume of the muffler, meets the arrangement requirement, and at the same time, the use of the small-volume muffler can reduce a certain weight, meets the lightweight requirement.

[0079] According to the third aspect of the utility model embodiment, the engine (not shown in the figure) comprises the exhaust system 200 according to the second aspect of the utility model above.

[0080] According to the engine of the utility model, by adopting the above-mentioned exhaust system 200, the energy utilization rate of the engine is improved, the fuel consumption is reduced, and the noise of the engine is also reduced. Moreover, the engine is also convenient to install. According to the fourth aspect of the utility model embodiment, the electric equipment (not shown in the figure) comprises the exhaust system 200 according to the second aspect of the utility model above, or the engine according to the third aspect of the utility model above.

[0081] According to the electric equipment of the utility model, by adopting the above-mentioned exhaust system 200 or engine, the energy utilization rate of the electric equipment is improved, the fuel consumption is reduced, and the noise of the electric equipment is also reduced. It should be noted that the electric equipment can be a vehicle, an aircraft or a ship, etc.

[0082] According to some embodiments of the utility model, the electric equipment further comprises a heat exchange system (not shown in the figure), which is communicated with the heat exchange flow channel 322 of the exhaust system 200.

[0083] For example, the heat exchange system is communicated with the fluid inlet pipe 323 and the fluid outlet pipe 324 of the heat absorbing part 32, so that the fluid in the heat exchange flow channel 322 can be heat exchanged in the heat exchange system, effectively improving the heat exchange efficiency and improving the heat utilization rate.

[0084] Other configurations and operations of the heat exchange noise reduction device 100, the exhaust system 200, the engine and the electric appliance according to the embodiments of the present application are known to those skilled in the art, and will not be described in detail here.

[0085] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0086] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the exemplary description of the above terms does not necessarily refer to the same embodiment or example.

[0087] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A heat exchange noise reduction device, characterized in that, The application relates to a heat-exchange and noise-reduction device. The device comprises: an exhaust pipe, which has an inlet, an outlet and an exhaust flow channel, and has at least a first state and a second state; a control valve arranged on the exhaust pipe, which controls switching between the first state and the second state; a heat-exchange assembly arranged on the exhaust pipe, which has at least one gas flow channel, two ends of the gas flow channel being communicated with the inlet and the outlet respectively, and the heat-exchange assembly comprising a heat-absorbing member; when the exhaust pipe is in the first state, the exhaust flow channel is closed, the inlet is communicated with the outlet through the gas flow channel, and gas is adapted to flow through the gas flow channel and exchange heat with the heat-absorbing member; 2. The heat exchange and noise reduction device according to claim 1, characterized in that, when the exhaust pipe is in the second state, the inlet and the outlet are communicated through at least the exhaust flow channel.

3. The heat exchange and noise reduction device of claim 2, wherein, The heat-exchange assembly comprises a heat-exchange member, which is sleeved on the exhaust pipe, and the heat-exchange member is located between the exhaust pipe and the heat-absorbing member, and the gas flow channel is formed on the heat-exchange member.

4. The heat exchange and noise reduction device of claim 3, wherein, The gas flow channel is a plurality of gas flow channels, and the plurality of gas flow channels are arranged along the circumference of the exhaust pipe.

5. The heat exchange and noise reduction device of claim 3, wherein, Each of the gas flow channels extends along the length direction of the exhaust pipe.

6. The heat exchange and noise reduction device of claim 3, wherein, The total cross-sectional area of the plurality of gas flow channels is S, wherein the S satisfies S <= 3 / 4 times the cross-sectional area of the exhaust pipe.

7. The heat exchange and noise reduction device of claim 2, wherein, The plurality of gas flow channels form a plurality of gas flow channel groups, each of the gas flow channel groups comprises a plurality of gas flow channels arranged along the circumference of the exhaust pipe, and the plurality of gas flow channel groups are arranged along the radial direction of the exhaust pipe.

8. The heat exchange and noise reduction device of claim 2, wherein, The heat-exchange member is a silicon carbide member or a metal member. The heat-absorbing member comprises:

9. The heat exchange and noise reduction device of claim 8, wherein, a heat-absorbing shell, which is sleeved on the heat-exchange member, and the heat-absorbing shell and the outer circumferential surface of the heat-exchange member jointly define a heat-exchange flow channel, the heat-exchange flow channel is independent of the gas flow channel, and when the exhaust pipe is in the first state, the gas is adapted to flow through the gas flow channel and exchange heat with the fluid in the heat-exchange flow channel.

10. The heat exchange noise reduction device of any one of claims 1-9, wherein, The heat-exchange flow channel extends along the circumference of the heat-exchange member. The control valve comprises: a valve body; a valve plate arranged in the exhaust pipe; an actuating mechanism, one end of the actuating mechanism being connected with the valve body, and the other end of the actuating mechanism being connected with the valve plate; 11. The heat exchange noise reduction device of claim 10, wherein, a controller arranged on the valve body, which controls the actuating mechanism to drive the valve plate to move and switch between the first state and the second state. The control valve further comprises:

12. An exhaust system characterized by, a resilient member arranged in the valve body and sleeved on the actuating mechanism, one end of the resilient member being connected with the actuating mechanism, and the other end of the resilient member being connected with the valve body, the resilient member drives the valve plate to be always kept in the first state through the actuating mechanism.

13. An engine characterized by, The application further relates to a heat-exchange and noise-reduction device.

14. An electrical device, characterized by The application further relates to an exhaust system.

15. The powered device of claim 14, wherein, The application further relates to an engine. The application further relates to an exhaust system. The application further relates to a heat-exchange system.

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