CN211524934U - Heating device for engine compartment and vehicle - Google Patents

Abstract

The present disclosure relates to a heating device and a vehicle for an engine compartment, the heating device (1) has an air outlet (11) and an air inlet (12) that communicate each other and set up relatively, the air inlet (12) communicates with the exhaust emission device of engine (5) with blocking, air outlet (11) sets up in the front end air intake department of engine compartment (2), just air outlet (11) is towards the rear to utilize the venturi principle to make some exhaust can follow in air outlet (11) and enter into in the engine compartment (2). Through above-mentioned technical scheme, this a heating device for engine compartment that openly provides can heat engine compartment (2), avoids the pipeline in engine compartment (2) to freeze and blocks up, and energy-concerving and environment-protective.

Description

Heating device for engine compartment and vehicle

Technical Field

The present disclosure relates to the technical field of automobile engines, and particularly to a heating device for an engine compartment and a vehicle.

Background

Outside cold air flows backwards to pass through a grille in the front of the automobile to enter the engine compartment, one part of the cold air enters a combustion chamber of the engine through an engine air inlet pipe, and the other part of the cold air continuously flows backwards under the suction force of a fan of the engine to play a role in cooling the whole engine compartment.

In the engine working process, a piston in an engine cylinder body cannot be completely sealed due to the fact that engine oil is needed for lubrication, and the exhaust gas can enter the bottom of an engine through a piston ring easily after a part of the combusted exhaust gas under high pressure, namely the exhaust oil pan, so that pressure is generated, steam is contained in the exhaust gas, and if the exhaust gas is not timely discharged from the oil pan, the exhaust gas can be fused with the engine oil, so that the emulsification failure of the engine oil is caused, and even the oil leakage due to the fact that the bottom pressure of the engine is too large is. Therefore, an engine oil pressure release pipeline is generally provided, one end of which is communicated with the oil pan and the other end of which is communicated with the engine air inlet pipe, and by utilizing the venturi principle, when external cold air flows in the engine air inlet pipe and passes through the engine oil release pipeline, suction force is generated, so that exhaust gas in the engine oil release pipeline is sucked into the engine air inlet pipe.

However, when the external temperature is too low, the external cold air enters the engine compartment to cause the temperature in the engine compartment to be too low, which easily causes the engine oil steam at the communication interface of the engine oil pressure release pipeline and the engine air inlet pipe to be quickly frozen into ice, thereby blocking the release channel of the engine oil pressure at the bottom of the engine, further causing the steam in the waste gas to be unable to be discharged from the bottom of the engine, further melting the engine oil, and causing the emulsification failure of the engine oil.

SUMMERY OF THE UTILITY MODEL

An object of the present disclosure is to provide a heating device for an engine compartment, which is capable of heating the engine compartment, preventing a pipe in the engine compartment from being frozen and blocked, and is energy-saving and environment-friendly.

Another object of the present disclosure is to provide a vehicle having the above heating apparatus for an engine compartment, which can be adapted to a cold environment, and is energy-saving and environmentally friendly.

In order to achieve the above object, according to a first aspect of the present disclosure, a heating device for an engine compartment is provided, the heating device having an air outlet and an air inlet which are communicated with each other and are oppositely disposed, the air inlet being in blocking communication with an exhaust gas discharge device of an engine, the air outlet being disposed at an air inlet at a front end of the engine compartment, and the air outlet being directed rearward, so that a portion of the exhaust gas can be discharged from the air outlet and enter the engine compartment by using a venturi principle.

Optionally, the connection position of the air inlet and the exhaust emission device is located behind the three-way catalyst.

Optionally, the intake port is connected to a muffler near the three-way catalyst.

Optionally, a plurality of sections of channels are arranged in the muffler, and the exhaust gas flows according to a path defined by the plurality of sections of channels, wherein the exhaust gas flows from back to front in at least one section of the channels, and the air inlet is communicated with the section of the channels.

Optionally, the multi-section channel includes a first air chamber, a second air chamber and a third air chamber which are sequentially arranged from front to back, and a first pipeline, a second pipeline and a third pipeline which extend in the front-back direction and are arranged at intervals, wherein an inlet of the first pipeline is connected with a front exhaust emission pipeline, an outlet of the first pipeline is arranged in the second air chamber, an inlet of the second pipeline is arranged in the second air chamber, an outlet of the second pipeline is arranged in the first air chamber, an inlet of the third pipeline is arranged in the first air chamber, and an outlet of the third pipeline is arranged in the third air chamber; and a recovery pipe is arranged on the silencer, an inlet of the recovery pipe is positioned in the first air chamber and is arranged close to an outlet of the second pipeline, and an outlet of the recovery pipe is communicated with the air inlet in a blocking manner.

Optionally, the recycling pipe is fixed on the front side wall of the muffler, an axis of an inlet of the recycling pipe is collinear with an axis of an outlet of the second duct, and the inlet of the recycling pipe is spaced apart from the outlet of the second duct.

Optionally, the outlet of the recovery pipe is detachably connected with the air inlet in a sealing manner.

Optionally, the air outlet is remote from an inlet of an air intake of the engine.

Optionally, the air outlet is located behind the inlet of the air inlet pipe.

According to a second aspect of the present disclosure, there is provided a vehicle including the above-described heating apparatus for an engine compartment.

According to the technical scheme, namely, when a large amount of external cold air enters from the front end of the engine compartment, the air outlet with the backward opening is positioned at the air inlet at the front end of the engine compartment, so that a venturi effect can be generated at the air outlet, namely, negative pressure is generated at the air outlet, and then suction force to the inside of the heating device is generated, so that part of tail gas in the tail gas discharging device is promoted to flow forwards from the back to enter the heating device and enter the engine compartment along with the external cold air, the internal temperature of the engine compartment is increased, and a pipeline, such as an engine oil release pipeline, positioned in the engine compartment is heated, and the pipeline in the engine compartment is prevented from being frozen and blocked; and the whole heating process does not additionally utilize other energy, thereby saving energy and protecting environment. And the air inlet and the exhaust emission device can be blocked and communicated, so that whether the engine compartment is heated by using the heat of the exhaust can be determined according to the external temperature. Therefore, the heating device for the engine compartment, provided by the disclosure, can heat the engine compartment, avoids the pipeline in the engine compartment from being frozen and blocked, and is energy-saving and environment-friendly.

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

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is a schematic illustration of a heating apparatus for an engine compartment provided in accordance with an embodiment of the present disclosure mounted on the engine compartment;

FIG. 2 is a schematic view of a muffler providing a heat source for a heating device for an engine compartment provided by embodiments of the present disclosure.

Description of the reference numerals

1-heating device, 11-air outlet, 12-air inlet, 2-engine cabin, 3-three-way catalytic converter,

4-muffler, 41-first air chamber, 42-second air chamber, 43-third air chamber, 44-first conduit,

45-second pipeline, 46-third pipeline, 47-recovery pipe, 5-engine, 51-air inlet pipe,

6-engine oil release pipeline.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, without being stated to the contrary, the terms of orientation such as "front and rear" are used based on the definition of the vehicle, wherein the front of the vehicle is front and the rear of the vehicle is rear; the "inner and outer" are relative to the profile of the corresponding component. The terms "first, second, etc. are used throughout this disclosure to distinguish one element from another, and are not necessarily sequential or significant. Furthermore, in the following description, when referring to the figures, the same reference numbers in different figures denote the same or similar elements, unless otherwise explained. The foregoing definitions are provided to illustrate and describe the present disclosure only and should not be construed to limit the present disclosure.

The known automobile exhaust contains high heat, when the external temperature is low, a pipeline in an engine compartment is easy to freeze and plug, if the engine compartment can be heated by utilizing the heat of the automobile exhaust in cold, the engine compartment is maintained in a proper temperature range, the pipeline in the engine compartment is prevented from being frozen and plugged, the heat utilization rate of the engine exhaust can be improved, and the energy conservation and the environmental protection are facilitated.

Therefore, according to a first aspect of the present disclosure, a heating device for an engine compartment is provided, as shown in fig. 1, the heating device 1 has an air outlet 11 and an air inlet 12 which are communicated with each other and are oppositely arranged, the air inlet 12 is in interruptible communication with an exhaust emission device of an engine 5, the air outlet 11 is arranged at an air inlet at the front end of the engine compartment 2, and the air outlet 11 faces rearward, so that part of exhaust gas can be discharged from the air outlet 11 and enter the engine compartment 2 by using the venturi principle.

According to the technical scheme, namely, when a large amount of outside cold air enters from the front end of the engine compartment 2 through the heating device 1, the air outlet 11 with the backward opening is positioned at the air inlet at the front end of the engine compartment, so that a venturi effect can be generated at the air outlet 11, namely, negative pressure is generated at the air outlet 11, and further suction force to the inside of the heating device 1 is generated, so that part of tail gas in the tail gas discharging device is promoted to flow forwards from the back into the heating device 1 and enter the engine compartment 2 along with the outside cold air, the internal temperature of the engine compartment 2 is increased, and a pipeline in the engine compartment 2, such as the engine oil release pipeline 6, is heated, and the pipeline in the engine compartment 2 is prevented from being frozen and blocked; and the whole heating process does not additionally utilize other energy, thereby saving energy and protecting environment. And the communication of the air intake 12 with the exhaust gas discharge device is blockable, so that whether to heat the engine compartment 2 with the exhaust gas heat can be decided according to the outside temperature. Therefore, the heating device for the engine compartment provided by the disclosure can heat the engine compartment 2, avoid the pipeline in the engine compartment 2 from being frozen and blocked, and is energy-saving and environment-friendly.

Wherein, because the air outlet 11 of the heating device is arranged at the exhaust emission device, the air inlet 12 is arranged at the front end of the engine compartment 2, and the engine compartment 2 is arranged in a complex way, the heating device can be constructed into a bent pipe body, and the suction force generated by the venturi effect can also help to overcome the resistance of the bent path to the exhaust flowing from back to front. The heating device constructed as a tube body can have a small tube diameter size to facilitate the formation of a venturi effect and avoid clogging of the front-end air intake of the engine compartment 2.

Since the automobile exhaust entering the engine compartment 2 is still communicated with the outside atmosphere and is discharged into the atmosphere along with the flow of the gas, as shown in fig. 1, the connection position of the air intake 12 and the exhaust gas discharge device is located behind the three-way catalyst 3, so that the exhaust gas entering the engine compartment 2 is purified by the three-way catalyst 3, which meets the exhaust gas discharge standard, and can avoid the pollution to the environment.

Alternatively, as shown in fig. 1, the intake port 12 may be connected to the muffler 4 near the three-way catalyst 3. Because the heat is gradually dissipated in the flowing process of the exhaust gas, the exhaust gas in the muffler 4 close to the three-way catalyst 3 has higher heat, and can play a better heating role on the engine compartment 2.

According to some embodiments of the present disclosure, a plurality of passages are provided in the muffler 4, and the exhaust gas flows along a path defined by the plurality of passages, wherein the exhaust gas flows from back to front in at least one of the passages, and the gas inlet 12 is communicated with the passage. In this way, the air inlet 12 is located in the flow direction of the exhaust gas from the rear to the front, which facilitates the exhaust gas to smoothly enter the air inlet 12 under the action of the flow inertia, and the flow inertia can act on the exhaust gas together with the suction force generated by the venturi effect, so as to promote the exhaust gas to flow from the rear to the front along the path defined by the heating device, which facilitates the absorption of more exhaust gas into the engine compartment 2.

The muffler 4 may be configured in any suitable structure, and optionally, in the present disclosure, as shown in fig. 2, the multi-sectional channel includes a first air chamber 41, a second air chamber 42 and a third air chamber 43 which are sequentially arranged from front to back, and a first pipeline 44, a second pipeline 45 and a third pipeline 46 which extend in the front-to-back direction and are arranged at intervals, wherein an inlet of the first pipeline 44 is connected with a front exhaust gas discharge pipeline, an outlet of the first pipeline 44 is arranged in the second air chamber 42, an inlet of the second pipeline 45 is arranged in the second air chamber 42, an outlet of the second pipeline 45 is arranged in the first air chamber 41, an inlet of the third pipeline 46 is arranged in the first air chamber 41, and an outlet of the third pipeline 46 is arranged in the third air chamber 43; the muffler 4 is provided with a recovery pipe 47, an inlet of the recovery pipe 47 is located in the first air chamber 41 and is disposed near an outlet of the second duct 45, and an outlet of the recovery pipe 47 is in blockable communication with the air inlet 12. Thus, the exhaust gas first enters the second air chamber 42 located in the middle through the outlet of the first duct 44, then from the second air chamber 42 into the second pipe 45, and from the outlet of the second pipe 45 into the first air chamber 41, wherein a part of the tail gas can enter the recovery pipe 47 from the first gas chamber 41, another part of the tail gas can enter the third pipeline 46 from the first gas chamber 41, and finally discharged from the muffler 4, so that it is possible to reduce not only the flow velocity of the exhaust gas to reduce noise, moreover, the flow direction of the tail gas in the second pipeline 45 is from back to front, and the inlet of the recovery pipe 47 is arranged at a position close to the second pipeline 45, so that the resistance of the tail gas entering the recovery pipe 47 is reduced or even overcome under the action of the flow inertia of the tail gas, to recover as much exhaust gas as possible so that the exhaust gas can smoothly enter the heating device through the gas inlet 12.

In addition, in other embodiments of the present disclosure, a through hole having an internal thread may be provided on the front side wall of the muffler 4, and the heating device is configured as a pipe body and has an external thread to be directly screwed with the internal thread through hole; or, a through hole is arranged on the front side wall of the silencer 4, and a clamping structure is arranged on the front side of the through hole to be directly clamped with the heating device. The present disclosure is not limited in particular.

According to some embodiments of the present disclosure, as shown in fig. 2, the recovery pipe 47 is fixed on the front sidewall of the muffler 4, an axis of an inlet of the recovery pipe 47 is collinear with an axis of an outlet of the second duct 45, and the inlet of the recovery pipe 47 is spaced apart from the outlet of the second duct 45. Wherein, can set up the through-hole on the preceding lateral wall of silencer 4, recovery tube 47 can pass this through-hole and with preceding lateral wall sealing connection, under the condition of the axis collineation of the import of recovery tube 47 and the axis of the import of second pipeline 45, tail gas can be in the smooth entering recovery tube 47 under the effect of flow inertia. Furthermore, by spacing the inlet of the recycling pipe 47 from the outlet of the second pipe 45, a portion of the exhaust gas can enter the heating device, and another portion of the exhaust gas can enter the third pipe 46 and be discharged from the muffler 4. Therefore, tail gas can be discharged smoothly in time, and overlarge backpressure of the engine is avoided.

According to some embodiments of the present disclosure, the outlet of the recovery pipe 47 and the gas inlet 12 may be detachably and hermetically connected to enable blockable communication of the heating device with the recovery pipe 47. Wherein, the heating device can be integrally and detachably arranged on the vehicle, and when the external temperature is lower, the heating device can be arranged on the vehicle and is connected with the recovery pipe 47; when the outside temperature is high, the heating device can be detached, and the outlet of the recovery pipe 47 is plugged, so that the tail gas is circulated in the muffler 4. Of course, in other embodiments, the outlet of the recovery pipe 47 and the gas inlet 12 may be fixedly connected, and a blocking valve is provided at the connection to achieve the blockable communication of the heating device and the recovery pipe 47 without disassembling the heating device.

In addition, there are various embodiments for removably sealing recovery tube 47 to intake port 12. For example, the recycling pipe 47 may be formed with an internal thread or an external thread, and the heating device may be formed as a pipe body which is screwed with the recycling pipe 47, or, for the convenience of installation of the heating device, the two may be simultaneously external threads, and connected through a pipe sleeve having an internal thread; for another example, the heating device configured as a tube body may be sealingly clamped to the recovery tube 47 by a clamp; and is not particularly limited herein.

In addition, in order to facilitate installation of the heating device, the heating device may be configured as at least two parts, and the at least two parts may be detachably connected to each other, and are not limited herein.

According to one embodiment of the present disclosure, as shown in fig. 1, the air outlet 11 is located rearward of the inlet of the intake pipe 51. Thus, when the external cold air enters the air inlet pipe 51, the tail gas discharged from the air outlet 11 can be prevented from entering the air inlet pipe 51 along with the external cold air, and the combustion efficiency of the engine 5 is prevented from being influenced.

According to a second aspect of the present disclosure, there is provided a vehicle including the heating apparatus for an engine compartment described above. Based on the function that above-mentioned heating device can heat the engine compartment, this vehicle can adapt to cold environment, and energy-concerving and environment-protective.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims (10)

1. A heating device for an engine compartment, characterized in that the heating device (1) has an air outlet (11) and an air inlet (12) that communicate with each other and are arranged opposite to each other, the air inlet (12) communicates with an exhaust emission device of an engine (5) in a blockable manner, the air outlet (11) is arranged at an air inlet at the front end of the engine compartment (2), and the air outlet (11) faces rearward, so that part of the exhaust can be discharged from the air outlet (11) and enter the engine compartment (2) by using the venturi principle.

2. The heating device for an engine compartment according to claim 1, characterized in that the position of connection of the air intake (12) to the exhaust emission device is located behind a three-way catalyst (3).

3. The heating device for an engine compartment according to claim 2, characterized in that the air inlet (12) is connected to a muffler (4) close to the three-way catalyst (3).

4. The heating device for an engine compartment according to claim 3, wherein a multi-segment channel is provided in the muffler (4), the exhaust gas flowing along a path defined by the multi-segment channel, wherein the exhaust gas flows from back to front in at least one segment of the channel, and the air inlet (12) communicates with the segment of the channel.

5. The heating device for the engine room according to claim 4, wherein the multi-sectional passage includes a first air chamber (41), a second air chamber (42), and a third air chamber (43) which are arranged in this order from front to rear, and a first duct (44), a second duct (45), and a third duct (46) which extend in the front-rear direction and are arranged at intervals, wherein,

the inlet of the first pipeline (44) is connected with a front exhaust gas discharge pipeline, the outlet of the first pipeline (44) is arranged in the second air chamber (42),

an inlet of the second duct (45) is arranged in the second plenum (42), an outlet of the second duct (45) is arranged in the first plenum (41),

the inlet of the third duct (46) is arranged in the first plenum (41) and the outlet of the third duct (46) is arranged in the third plenum (43);

and a recovery pipe (47) is arranged on the silencer (4), an inlet of the recovery pipe (47) is positioned in the first air chamber and is arranged close to an outlet of the second pipeline (45), and an outlet of the recovery pipe (47) is communicated with the air inlet (12) in a blocking manner.

6. The heating device for an engine compartment according to claim 5, characterized in that said recovery duct (47) is fixed on the front side wall of said muffler (4), the axis of the inlet of said recovery duct (47) is collinear with the axis of the outlet of said second duct (45), and the inlet of said recovery duct (47) is spaced from the outlet of said second duct (45).

7. The heating device for an engine compartment according to claim 5, characterised in that the outlet of the recovery duct (47) is removably connected hermetically to the air intake (12).

8. The heating device for an engine compartment according to claim 1, characterised in that the air outlet (11) is remote from the inlet of an air intake (51) of the engine (5).

9. The heating device for an engine compartment according to claim 8, characterised in that the air outlet (11) is located behind the inlet of the air intake duct (51).

10. A vehicle characterized by comprising the heating device for an engine compartment of any one of claims 1 to 9.

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