CN220539720U - Tail gas cooling system and vehicle - Google Patents

Abstract

The utility model relates to a tail gas cooling system and vehicle, wherein tail gas cooling system include tail gas emission pipeline and refrigerant circulation loop, high temperature tail gas in the tail gas emission pipeline with low temperature refrigerant in the refrigerant circulation loop passes through heat transfer device and exchanges heat, wherein, refrigerant circulation loop is air conditioner refrigerant loop or engine's driving system refrigerant loop. Through above-mentioned technical scheme, utilize among vehicle air conditioning system and the driving system current refrigerant return circuit to insert the tail gas cooling system of this disclosure, this kind of make full use of vehicle original system and part can be applicable to more motorcycle types through simple improvement, and the commonality is better, and the tail gas cooling system simple structure that this disclosure provided is favorable to the optimization overall arrangement to whole car.

Description

Tail gas cooling system and vehicle

Technical Field

The disclosure relates to the technical field of vehicles, in particular to an exhaust cooling system and a vehicle with the same.

Background

With the increasing emission standards, after-treatment is required before the exhaust gas is vented to the atmosphere to reduce the level of contaminants that are ultimately vented to the atmosphere. The tail gas temperature is higher, generally need carry out cooling treatment before discharging, and tail gas cooling device among the related art is complicated in general structure, often needs to carry out great change to whole car, has put forward higher requirement to whole car's overall arrangement.

Disclosure of Invention

To overcome the problems in the related art, the present disclosure provides an exhaust cooling system and a vehicle.

According to a first aspect of the embodiments of the present disclosure, there is provided an exhaust gas cooling system, including an exhaust gas exhaust pipe and a refrigerant circulation loop, wherein a high-temperature exhaust gas in the exhaust gas exhaust pipe and a low-temperature refrigerant in the refrigerant circulation loop exchange heat through a heat exchange device, and the refrigerant circulation loop is an air-conditioning refrigerant loop or a power system refrigerant loop of an engine.

Optionally, the tail gas emission pipeline comprises an air inlet pipe section and an air outlet pipe section, the inlet end of the air inlet pipe section is used for being communicated with the muffler, and the outlet end of the air inlet pipe section is communicated with the air inlet of the heat exchange device; the inlet end of the exhaust pipe section is communicated with the exhaust port of the heat exchange device, and the outlet end of the exhaust pipe section is used for discharging cooled tail gas to the outside.

Optionally, a flexible pipe section is further arranged between the air inlet pipe section and the heat exchange device.

Optionally, the exhaust pipe section includes a first exhaust branch and a second exhaust branch, each communicating with the inlet end, the first exhaust branch and the second exhaust branch being symmetrically arranged on both sides of the vehicle body about the axis of the intake pipe section.

Optionally, a connection structure for mounting the exhaust pipe section to a vehicle body is provided on the exhaust pipe section.

Optionally, the refrigerant circulation loop comprises a refrigerant treatment device, a water pump and a multi-way valve, wherein the refrigerant treatment device is used for cooling a high-temperature refrigerant to continue to participate in the cooling circulation, the water pump is used for enabling the refrigerant to circulate in the loop, a water inlet of the heat exchange device is communicated with the refrigerant treatment device through a water inlet pipe, a water outlet of the heat exchange device is communicated with the multi-way valve through a water outlet pipe, and the multi-way valve is communicated with the refrigerant treatment device.

Optionally, the water inlet pipe and the water outlet pipe are both alloy pipes.

Optionally, the heat exchange device includes a plurality of flat pipes that supply refrigerant to pass through that the interval set up and sets up two adjacent between the flat pipe supply the fin that tail gas passed through.

According to a first aspect of embodiments of the present disclosure, there is provided a vehicle comprising an exhaust gas cooling system of any one of the above.

Optionally, the vehicle is a hybrid vehicle, and the exhaust gas cooling system is disposed in a front cabin.

The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects: the tail gas cooling system provided by the disclosure enables high-temperature tail gas in the tail gas discharge pipeline and low-temperature refrigerant in the refrigerant circulation loop to exchange heat through the heat exchange device, so that the aim of reducing the temperature of the tail gas is achieved. The refrigerant circulation loop is an air conditioning refrigerant loop or a power system refrigerant loop of an engine, namely, the existing refrigerant loops in the vehicle air conditioning system and the power system are utilized to be connected into the tail gas cooling system of the present disclosure, the original system and components of the vehicle are fully utilized, the system and the components can be easily improved to be suitable for more vehicle types, the universality is better, and the tail gas cooling system provided by the present disclosure has a simple structure, and is favorable for optimizing the layout of the whole vehicle.

Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:

FIG. 1 is a schematic diagram of an exhaust cooling system, according to an exemplary embodiment.

Fig. 2 is a schematic diagram of the exhaust gas cooling system of fig. 1 at another viewing angle.

Fig. 3 is a schematic view of a heat exchange device according to an exemplary embodiment.

Fig. 4 is a cross-sectional view of section A-A of fig. 3.

FIG. 5 is a schematic diagram illustrating a layout of an exhaust cooling system in a vehicle according to an exemplary embodiment.

Description of the reference numerals

The device comprises a 1-tail gas emission pipeline, a 11-air inlet pipe section, a 12-air exhaust pipe section, a 121-first air exhaust branch, a 122-second air exhaust branch, a 13-flexible pipe section, a 14-connection structure, a 2-refrigerant circulation loop, a 21-refrigerant treatment device, a 22-water pump, a 23-multi-way valve, a 24-water inlet pipe, a 25-water outlet pipe, a 3-heat exchange device, a 31-air guide cover, a 311-water inlet, a 312-water outlet, a 313-air inlet, a 314-air outlet, a 32-flat pipe, 33-fins, a 100 tail gas cooling system, a 200-power battery and 300-wheels.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.

Unless otherwise indicated, terms of orientation such as "upper, lower, left, right" and "inner" are used herein to define the directions indicated by the corresponding drawings, and "inner" and "outer" are intended to refer to the inner and outer sides of the outline of the corresponding component itself. Furthermore, the terms "first," "second," and the like, herein used in order to distinguish one element from another element, without sequence or importance.

The present disclosure exemplarily provides an exhaust gas cooling system, as shown in fig. 1 to 5, an exhaust gas cooling system 100 of the present disclosure includes an exhaust gas discharge pipeline 1 and a refrigerant circulation loop 2, a high-temperature exhaust gas in the exhaust gas discharge pipeline 1 and a low-temperature refrigerant in the refrigerant circulation loop 2 exchange heat through a heat exchange device 3, wherein the refrigerant circulation loop 2 is an air-conditioning refrigerant loop or a power system refrigerant loop of an engine. The exhaust pipe 1 is used for allowing the exhaust gas to pass through the inside of the exhaust pipe 1, specifically, the inlet end of the exhaust pipe 1 is connected with a muffler, the exhaust gas after the muffler treatment enters the exhaust pipe 1, and the exhaust gas is discharged to the outside atmosphere from the outlet end after being cooled. It should be further noted that, the air conditioning refrigerant loop and the power system refrigerant loop are existing refrigerant loops of the vehicle, that is, the existing or existing refrigerant loops in the air conditioning system and the power system of the vehicle are utilized to be connected into the exhaust gas cooling system 100 of the present disclosure.

The general principle of air conditioner coolant loop refrigeration is that a compressor compresses a gaseous coolant into a high-temperature high-pressure gaseous coolant, the gaseous coolant is sent to a condenser for cooling, the cooled gaseous coolant becomes a medium-temperature high-pressure liquid coolant, the medium-temperature liquid coolant throttles and reduces the pressure of a low-temperature low-pressure gas-liquid mixture through an expansion valve, the gas-liquid mixture is gasified after absorbing heat in air through an evaporator, the gas is changed into a gaseous coolant, and then the gas returns to the compressor for continuous compression, and the gas is continuously circulated for refrigeration. For the engine, the engine is at the optimal working temperature, which is particularly important for the stable and safe operation of the vehicle, the low-temperature refrigerant entering the engine can quickly reduce the temperature in the engine to the optimal working temperature, the high-temperature refrigerant flowing out of the engine can be cooled through the components such as a compressor and the like an air-conditioning refrigerant loop so as to continue to participate in circulation, or the heat can be discharged through a cooling fan, for example, the heat can be directly discharged into a room in winter, and the energy consumed by starting an air conditioner can be saved while the temperature is improved.

The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects: the exhaust cooling system 100 provided by the disclosure enables the high-temperature exhaust in the exhaust emission pipeline 1 and the low-temperature refrigerant in the refrigerant circulation loop 2 to exchange heat through the heat exchange device 3, thereby achieving the purpose of reducing the temperature of the exhaust. The refrigerant circulation loop 2 is an air conditioning refrigerant loop or a power system refrigerant loop of an engine, namely, an existing refrigerant loop in an air conditioning system and a power system of a vehicle is utilized to be connected into the tail gas cooling system of the present disclosure, namely, the refrigerant in the air conditioning system and the power system can be used for cooling the air conditioning system or the power system and can be used for the tail gas cooling system 100 of the present disclosure, the original system and components of the vehicle can be utilized fully, the original system and components of the vehicle can be adapted to more vehicle types through simple improvement, the universality is better, and the tail gas cooling system provided by the present disclosure has a simple structure, and is favorable for optimizing the layout of the whole vehicle.

In some embodiments, as shown in fig. 1 to 3, the exhaust gas discharge pipe 1 includes an intake pipe section 11 and an exhaust pipe section 12, an inlet end of the intake pipe section 11 is used to communicate with a muffler, and an outlet end of the intake pipe section 11 is communicated with an air inlet 313 of the heat exchange device 3; the inlet end of the exhaust pipe section 12 is communicated with the exhaust port 314 of the heat exchange device 3, and the outlet end of the exhaust pipe section 12 is used for discharging the cooled tail gas to the outside. The inlet end of the inlet pipe section 11 may be used for direct connection with the muffler or indirectly through other pipe sections. By configuring the discharge line 1 to include the detachable intake pipe section 11 and the discharge pipe section 12, it is facilitated to communicate the intake pipe section 11 and the discharge pipe section 12 with the intake port 313 and the discharge port 314 of the heat exchange device 3, respectively, and installation is facilitated.

In other embodiments, a flexible tube section 13 is further arranged between the inlet tube section 11 and the heat exchange device 3, and the flexible tube section 13 may be, for example, a bellows. Specifically, the air inlet pipe section 11 is led out from the muffler and then connected with the flexible pipe section 13, and is discharged to the outside atmosphere through the air outlet pipe section 12 after passing through the heat exchange device 3. The flexible pipe section 13 can absorb more exhaust vibration and power assembly swing, and reduces the transmission of the vibration to the tail gas emission pipeline 1.

In still other embodiments, the exhaust pipe section 12 includes a first exhaust branch 121 and a second exhaust branch 122, both communicating with the inlet end, the first exhaust branch 121 and the second exhaust branch 122 being symmetrically arranged on both sides of the vehicle body with respect to the axis of the intake pipe section 11, i.e., such that the exhaust pipe section 12 is distributed in a double-sided, double-out, arrangement that preferentially meets standard requirements that cannot be directed toward the ground and right, while the exhaust pipe section 12 outlet position is closer to the power cell 200 and the wheel 300 than the industry common arrangement position (tail), so the exhaust gas cooling system of the present disclosure can minimize or even completely avoid the heat damage problem. Further, the exhaust pipe section 12 is provided with a connection structure 14 for mounting the exhaust pipe section 12 to the vehicle body, and the connection structure 14 may be, for example, a connection lifting lug, which is beneficial to further improving the mounting and working reliability of the exhaust gas cooling system, and the exhaust gas cooling system is also beneficial to maintenance through the detachable connection of the connection structure 14 and the vehicle body.

As shown in fig. 1 and 2, the present disclosure exemplarily provides a refrigerant circulation circuit 2, and the refrigerant circulation circuit 2 includes a refrigerant treatment device 21, a water pump 22, and a multi-way valve 23. The refrigerant processing device 21 is used for compressing and cooling a high-temperature refrigerant to continue to participate in a cooling cycle, for example, the refrigerant processing device 21 may be integrated with a compressor, a condenser, an expansion valve, an evaporator, and the like. The water pump 22 is used to circulate the refrigerant in the circuit. Wherein, the water inlet 311 of the heat exchange device 3 is communicated with the refrigerant treatment device 21 through the water inlet pipe 24, the water outlet 312 of the heat exchange device 3 is communicated with the multi-way valve 23 through the water outlet pipe 25, and the multi-way valve 23 is communicated with the refrigerant treatment device 21. Alternatively, inlet tube 24 and outlet tube 25 are each an alloy tubing, such as an aluminum alloy tubing. The water inlet pipe 24 and the water outlet pipe 25 of the alloy material can play a role in assisting in positioning the tail gas discharge pipeline 1.

Generally speaking, the refrigerant circuits of the air conditioning system of the vehicle or the power system of the engine are all provided with the multi-way valve 23, for example, a five-way valve is provided, all outlets of the valve are not necessarily opened according to actual needs, and only the outlet which is not opened is connected to the tail gas cooling system of the present disclosure at this time, that is, the existing or existing refrigerant circuits in the air conditioning system and the power system of the vehicle are connected to the tail gas cooling system 100 of the present disclosure, so that the original system and components of the vehicle are fully utilized, the system and the components of the vehicle can be easily improved to be suitable for more vehicle types, the universality is better, and the tail gas cooling system provided by the present disclosure has a simple structure and is favorable for optimizing the layout of the whole vehicle.

In some embodiments, as shown in fig. 3 and 4, the heat exchange device 3 includes a plurality of flat tubes 32 through which the refrigerant passes, and fins 33 between two adjacent flat tubes 32 through which the exhaust gas passes. In addition, the shell of heat transfer device 3 can be constructed as wind scooper 31, and wind scooper 31 uses as the shell of heat transfer device 3, and flat pipe 32 and fin 33 set up in wind scooper 31, i.e. this disclosure parallel flow heat exchanger, and the refrigerant flows in the flat pipe 32 syntropy under the drive of water pump 23, and the heat is absorbed to fin 33 after the high temperature tail gas flows through fin 33, and the heat transfer is carried out to the refrigerant of inside through flat pipe 32 again, reaches the purpose of cooling tail gas.

The exhaust cooling system 100 provided by the present disclosure may employ an active control approach or a passive control approach. The active and passive are referred to by operators, specifically, active control means that the driver can actively start the exhaust cooling system 100 according to the temperature of the exhaust, for example, the temperature of the exhaust can be displayed on a central console in real time, and the operator can actively start the exhaust cooling system 100 according to the displayed temperature; passive control refers to the controller controlling the opening of the exhaust cooling system 100 based on the monitored exhaust temperature without operator intervention. When the tail gas temperature is monitored to be too high and the vehicle is in a stationary state (idle working condition), the multi-way valve 23 opens a passage connected with the heat exchange device 3, the low-temperature refrigerant is sucked into the heat exchange device 3 by the refrigerant treatment device 21 under the driving of the water pump 22, and meanwhile, high-temperature waste gas generated by the operation of the engine passes through the flexible pipe section 13 after part of noise is eliminated by the muffler and flows into the heat exchange device 3. The high-temperature waste gas exchanges heat with the low-temperature refrigerant in the high-temperature waste gas through the fins 33 and the flat tubes 32, and then the cooled tail gas is continuously discharged from outlets distributed on two sides of the rear of the front shaft through the exhaust tube section 12; the high-temperature refrigerant after absorbing heat flows to the multi-way valve 23 through the water outlet pipe 25 under the drive of the water pump 22, and then is pumped into the refrigerant treatment device 21 through the water pump 23 to be compressed and cooled to continue to participate in circulation.

According to a second aspect of the embodiments of the present disclosure, a vehicle is provided, including any one of the exhaust gas cooling systems described above, and having all of its beneficial effects, which are not described herein. Optionally, the vehicle is a hybrid vehicle and the exhaust cooling system is disposed within the front cabin. As shown in fig. 5, the exhaust cooling system, especially the exhaust emission pipeline 1 is intensively arranged in the front cabin, so that compared with the traditional arrangement mode that the exhaust pipe reaches the tail of the vehicle through the bottom of the member cabin, the arrangement space of the chassis at the bottom of the member cabin can be maximally yielded, and the arrangement space of the power battery is larger for the new energy passenger vehicle, so that longer cruising is brought.

The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.

In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations are not described further in this disclosure in order to avoid unnecessary repetition.

Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.

Claims (10)

1. The tail gas cooling system is characterized by comprising a tail gas discharge pipeline and a refrigerant circulation loop, wherein high-temperature tail gas in the tail gas discharge pipeline and low-temperature refrigerant in the refrigerant circulation loop exchange heat through a heat exchange device, and the refrigerant circulation loop is an air conditioner refrigerant loop or a power system refrigerant loop of an engine.

2. The exhaust gas cooling system according to claim 1, wherein the exhaust gas discharge line comprises an intake pipe section and an exhaust pipe section, an inlet end of the intake pipe section being for communication with a muffler, an outlet end of the intake pipe section being in communication with an air inlet of the heat exchange device; the inlet end of the exhaust pipe section is communicated with the exhaust port of the heat exchange device, and the outlet end of the exhaust pipe section is used for discharging cooled tail gas to the outside.

3. The exhaust gas cooling system according to claim 2, wherein a flexible tube section is further provided between the intake tube section and the heat exchange device.

4. The exhaust gas cooling system according to claim 2, wherein the exhaust pipe section includes a first exhaust branch and a second exhaust branch each communicating with the inlet end, the first exhaust branch and the second exhaust branch being symmetrically arranged on both sides of the vehicle body with respect to the axis of the intake pipe section.

5. The exhaust gas cooling system according to claim 4, wherein a connection structure for mounting the exhaust pipe section to a vehicle body is provided on the exhaust pipe section.

6. The exhaust gas cooling system according to any one of claims 1 to 5, wherein the refrigerant circulation circuit includes a refrigerant treatment device for cooling a high-temperature refrigerant to continue to participate in a cooling cycle, a water pump for circulating the refrigerant in the circuit, wherein a water inlet of the heat exchange device is communicated with the refrigerant treatment device through a water inlet pipe, a water outlet of the heat exchange device is communicated with the multi-pass valve through a water outlet pipe, and the multi-pass valve is communicated with the refrigerant treatment device.

7. The exhaust gas cooling system according to claim 6, wherein the water inlet pipe and the water outlet pipe are both alloy pipes.

8. The exhaust gas cooling system according to claim 1, wherein the heat exchanging device comprises a plurality of flat tubes through which the refrigerant passes and fins between two adjacent flat tubes through which the exhaust gas passes.

9. A vehicle comprising an exhaust gas cooling system according to any one of claims 1-8.

10. The vehicle of claim 9, wherein the vehicle is a hybrid vehicle and the exhaust cooling system is disposed within a front cabin.