CN209854806U

CN209854806U - Engine compartment, power device and engineering machinery

Info

Publication number: CN209854806U
Application number: CN201822088715.3U
Authority: CN
Inventors: 王淑婧
Original assignee: Jiangsu XCMG Construction Machinery Institute Co Ltd
Current assignee: Jiangsu XCMG Construction Machinery Institute Co Ltd
Priority date: 2018-12-13
Filing date: 2018-12-13
Publication date: 2019-12-27
Anticipated expiration: 2028-12-13

Abstract

The utility model provides an engine compartment, power device and engineering machine tool. The engine compartment comprises a compartment body, the compartment body is used for containing an engine and ventilating and radiating the engine, the compartment body comprises at least one air inlet and an air outlet, the at least one air inlet is formed in the bottom of the compartment body and/or the rear part of the compartment body, and the air outlet is formed in the top of the compartment body. Through the setting position of the air inlet and the air outlet of the optimized engine compartment, the noise is prevented from radiating to the front side and the two sides of the engine compartment, and meanwhile, the noise is far away from the operation room.

Description

Engine compartment, power device and engineering machinery

Technical Field

The utility model relates to an engineering machine tool field, in particular to engine compartment, applied this engine compartment's power device and engineering machine tool.

Background

Construction machines have been commonly used in various construction sites. The engineering machinery has more and more outstanding noise problems while improving the working efficiency and reducing the labor intensity of workers, and becomes one of noise sources of urban environment. For example, when an engine, a cooling fan and the like in a power cabin of the double-wheel slot milling machine work, noise can be radiated outwards, the normal life of residents nearby a construction site can be influenced by overhigh noise, the hearing of a driver can be damaged when the double-wheel slot milling machine works in an environment with overhigh noise for a long time, the driver is accelerated to be tired, and the construction safety is threatened. The construction site of the double-wheel slot milling machine is usually located in dense residential living areas such as urban subway stations, and too high noise can also influence the lives of surrounding residents.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an engine compartment, this engine compartment are through optimizing the position that sets up of the income wind gap and the air outlet in engine compartment, avoid the noise to engine compartment front side and both sides radiation, and the control chamber is kept away from to the noise simultaneously. The utility model discloses still provide a power device and engineering machine tool of using this engine compartment simultaneously.

The utility model discloses an engine compartment, including the cabin body for it is right to hold the engine carries out ventilation cooling, the cabin body includes at least one income wind gap and air outlet, at least one income wind gap set up in cabin body bottom and/or cabin body rear portion, the air outlet is located cabin body top.

In some embodiments, the engine compartment includes at least one wind scooper, each wind scooper corresponds to one wind inlet, and the wind scooper is disposed at the corresponding wind inlet of the cabin body and is configured to guide air outside the cabin body into the cabin body through the corresponding wind inlet to dissipate heat of the engine inside the cabin body.

In some embodiments, the wind scooper comprises:

the outer air chamber is arranged on the outer side of the cabin body and comprises an air inlet which is arranged on the side wall of the outer air chamber and used for receiving air outside the cabin body;

the inner air chamber is arranged on the inner side of the cabin body, is communicated with the outer air chamber through the corresponding air inlet and comprises an air outlet which is arranged on the side wall of the inner air chamber and is used for outputting air to the inside of the cabin body.

In some embodiments, the exhaust outlet faces opposite the intake vent.

In some embodiments, the air guiding cover further includes an air guiding portion, which is disposed in the air guiding cover and between the air inlet and the air outlet, and is configured to prevent any position of the air inlet from being linearly communicated with any position of the air outlet.

In some embodiments, the air guiding portion includes a wind deflector disposed on an inner wall of the air guiding cover between the air inlet and the air outlet.

In some embodiments, the wind deflectors are spaced apart to form a serpentine flow path between the air inlet and the air outlet.

In some embodiments, the wind scooper comprises a sound absorbing material disposed on an inner wall of the wind scooper and/or the wind scooper.

In some embodiments, the wind scooper is disposed at the bottom of the cabin.

In some embodiments of the present invention, the,

the at least one air inlet comprises a first air inlet and a second air inlet;

the at least one wind scooper comprises a first wind scooper arranged corresponding to the first wind inlet and a second wind scooper arranged corresponding to the second wind inlet.

In some embodiments, the engine compartment includes a plurality of interconnected components, with a first sealing device disposed between each of the interconnected components.

The utility model discloses a power device is disclosed to the second aspect, include:

the engine compartment is the engine compartment;

an engine located within a cabin of the engine compartment; and

and the radiator is positioned in the cabin body of the engine cabin and used for radiating heat for the engine.

In some embodiments, the engine is disposed at the rear of the cabin, the radiator is disposed above the front side of the engine, and the air outlet is disposed on the cabin directly above the radiator, wherein,

the at least one air inlet comprises a first air inlet which is arranged at the bottom of the cabin body and is positioned in front of the engine; and/or the presence of a gas in the gas,

the at least one air inlet comprises a second air inlet which is arranged at the bottom of the cabin body and is positioned below the engine; and/or the presence of a gas in the gas,

the at least one air inlet comprises a third air inlet positioned on the rear side surface of the cabin body, and the third air inlet is positioned above the engine so as to introduce air outside the cabin body to dissipate heat of the upper part of the engine.

In some embodiments, the engine compartment includes at least one wind scooper, each wind scooper is disposed corresponding to one wind inlet, and the wind scooper is disposed at the corresponding wind inlet of the cabin body and is used for guiding air outside the cabin body into the cabin body through the corresponding wind inlet to dissipate heat of the engine inside the cabin body,

the at least one air guide cover comprises a first air guide cover corresponding to the first air inlet, and an air outlet of the first air guide cover faces the engine;

the at least one wind scooper comprises a second wind scooper corresponding to the second wind inlet, and a wind outlet of the second wind scooper faces to the rear side face of the cabin body.

In some embodiments, a region of the top of the cabin near the third air inlet sinks relative to a region of the air outlet.

The utility model discloses the third aspect discloses an engineering machine tool, including arbitrary power device.

In some embodiments, the at least one air inlet includes a third air inlet located on the rear side of the cabin, the third air inlet is located above the engine to introduce air outside the cabin to dissipate heat from the upper portion of the engine, the engineering machinery further includes a counterweight located at the rear of the cabin, and a sound absorbing material is located between the counterweight and the rear side of the engine cabin.

In some embodiments, the work machine comprises a turret carrying the power plant, and a second sealing device is arranged between the engine compartment and the turret.

In some embodiments, the work machine is a two-wheel slot milling machine.

Based on the utility model provides an engine compartment, at least one income wind gap in engine compartment set up in cabin body bottom and/or cabin body rear portion, and the air outlet is located cabin body top sets up the position through the income wind gap in optimization engine compartment and air outlet, avoids the noise to engine compartment front side and both sides radiation, and the control chamber is kept away from to the noise simultaneously.

Based on the utility model provides a power device and double round slot milling machine also can have similar beneficial effect.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:

fig. 1 is a schematic structural view of an engine compartment according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of the wind scooper of the embodiment shown in FIG. 1;

fig. 3 is a schematic partial structural view of an air guiding cover according to another embodiment of the present invention;

fig. 4 is a schematic structural diagram of a power plant according to another embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The utility model discloses an in the description, the part that the cabin body is used for bearing the engine is the bottom of the cabin body, and the part relative with the bottom of the cabin body is the top of the cabin body, and the engine compartment is back after installing on engineering machine, and one side that is close to the control chamber (like the driver's cabin) is preceding, and one side of keeping away from the control chamber is the back.

As shown in fig. 1 to 4, an engine compartment according to an embodiment of the present invention includes a cabin.

The nacelle is used to house the engine 20 and to ventilate and dissipate heat from the engine 20. The cabin comprises at least one air inlet and outlet 101. The at least one air inlet is arranged at the bottom of the cabin body and/or the rear part of the cabin body, and the air outlet is positioned at the top of the cabin body. When the engine is accommodated in the cabin, the air outside the cabin flows into the cabin through the air inlet to dissipate the heat of the engine 20, and then flows out of the air outlet 101 to the outside of the cabin. The air inlets may be one or more, and as shown in fig. 1, the air inlets may include a first air inlet 501, a second air inlet 502 and a third air inlet 701 disposed on the nacelle.

At least one air inlet of the engine compartment is arranged at the bottom of the compartment body and/or the rear part of the compartment body, and an air outlet is arranged at the top of the compartment body. In a construction machine using an engine room, such as a two-wheel slot milling machine, a worker usually moves on both sides of the engine room, and the front side of the engine room is close to a cab. By optimizing the arrangement positions of the air inlet and the air outlet of the engine compartment, the noise is prevented from radiating to the front side and the two sides of the engine compartment, so that the noise is far away from surrounding operators and the noise is far away from an operation room.

As shown in fig. 1 and 4, the engine compartment includes at least one wind scooper 4, and each wind scooper 4 is disposed corresponding to one wind inlet, that is, each wind scooper corresponds to a wind inlet, but the wind scooper may be disposed at the wind inlet or the wind scooper 4 may not be disposed at the wind inlet. The wind scooper 4 is disposed at the corresponding wind inlet of the cabin and is used for guiding the air outside the cabin into the cabin through the corresponding wind inlet to dissipate the heat of the engine 20 inside the cabin.

The arrangement of the wind scooper facilitates the introduction of air outside the cabin into a proper position in the engine compartment in a proper flow direction, thereby facilitating the control of the flow path inside the engine compartment and ensuring that the heat dissipation of the engine 20 is sufficient.

In some embodiments, the wind scooper 4 includes an outer plenum 42, an inner plenum 41. The external air chamber 42 is disposed outside the enclosure and includes an air inlet disposed in a sidewall of the external air chamber 42 for receiving external air from the enclosure. The inner air chamber 41 is arranged at the inner side of the cabin body, is communicated with the outer air chamber 42 through corresponding air inlets, and comprises an air outlet which is arranged on the side wall of the inner air chamber 41 and is used for outputting air to the interior of the cabin body. The air guide cover 4 is simple in structure, and the air inlet and the air outlet are arranged to enable air entering the air guide cover 4 from the air inlet to flow to the air outlet in a non-linear mode, so that noise is prevented from being directly transmitted from the air inlet of the cabin body while the air enters the inner side of the cabin body, and noise emission is reduced.

As shown in fig. 1 and 4, the wall surface of the inner air chamber 41 protruding toward the cabin inner side and facing the corresponding air inlet is the top wall of the inner air chamber 41, and the wall surface of the outer air chamber 42 protruding toward the cabin outer side and facing the corresponding air inlet is the top wall of the outer air chamber 42.

In some embodiments, the exhaust outlet is oriented opposite the intake vent. For example, the air intake may face forward and the air exhaust rearward. In an embodiment not shown, the air outlet and the air inlet may be disposed at other relative positions, for example, the air outlet and the air inlet may be oriented at an angle smaller than 180 degrees.

In some embodiments, the wind scooper 4 further comprises a wind scooper portion. The air guide part is arranged in the air guide cover 4 and positioned between the air inlet and the air outlet, and is used for preventing any position of the air inlet from being linearly communicated with any position of the air outlet. This setting can realize flowing into the cabin body through the non-linear flow mode from the air of air intake and dispel the heat to the engine that is located the cabin body, simultaneously, the noise that produces in the cabin body can be blockked by wind-guiding portion when spreading to the external world through the wind scooper to can not be sharp pass to the air intake in order to pass to cabin body outside from the air exit, thereby the noise that passes into the external world can be weakened.

The engine compartment of the present embodiment can achieve heat dissipation of the engine 20, and at the same time, can help to reduce the transmission of noise generated in the engine to the outside.

In some embodiments, the air guide portion comprises an air baffle 43 disposed on the inner wall of the air guide 4 between the air inlet and the air outlet. The wind shield 43 is arranged to prevent any position of the air inlet from being communicated with any position of the air outlet in a straight line mode, and the air inlet structure is simple in structure and easy to achieve. For example, the air guiding portion may include a wind shielding plate 43, and the wind shielding plate 43 is disposed to extend from the inner top wall of the inner air chamber 41 to the outer air chamber 42 and to reach the outer air chamber 42 to achieve the above-mentioned solution. The air guiding part can also be a baffle 43 arranged on the air inlet corresponding to the air guiding cover 4.

In some embodiments, a plurality of air deflectors 43 are spaced apart to form a serpentine flow path between the intake and exhaust vents. As shown in FIG. 3, the air guiding part comprises a plurality of baffles 43 which are arranged at intervals and extend from the inner top wall of the outer air chamber 42 to the inner air chamber 41 and baffles 43 which are arranged at the inner top wall 2 of the inner air chamber 41 and extend to the outer air chamber 42, and the baffles 43 extending from the inner top wall of the outer air chamber 42 and the baffles 43 extending from the inner top wall 2 of the inner air chamber 41 are staggered at intervals to form a serpentine flow passage, so that the external air is guided into the cabin body in a mode of multiple turns. The serpentine flow channel is arranged to help increase the attenuation of noise generated inside the cabin when the noise propagates to the outside through the wind scooper 4.

In some embodiments, the wind scooper 4 comprises a sound absorbing material arranged on the inner wall of the wind scooper 4 and/or on the wind scooper. The noise reduction and absorption effects can be effectively improved by arranging the sound absorption material on the inner wall and/or the air guide part of the air guide cover 4 and matching with the blocking effect of the air guide part on the noise transmission, for example, the noise can be directly absorbed by the sound absorption material on the air guide part or absorbed by the sound absorption material after being reflected to the inner wall of the air guide cover by the air guide part, so that the noise transmission to the outside can be effectively reduced.

In some embodiments, the wind scooper 4 is disposed at the bottom of the cabin and the wind outlet 101 is disposed at the top of the cabin. In a construction machine using an engine compartment, such as a two-wheel slot milling machine, a worker usually moves on both sides of the engine compartment, and the side of the engine compartment is also close to the cab. The air inlet with the air guide cover 4 of the engine compartment is arranged at the bottom of the engine compartment, so that noise pollution to nearby operators and drivers is further reduced. Meanwhile, the distance between the air inlet and the air outlet 101 of the engine compartment is larger in the embodiment, so that the influence on the heat dissipation effect of the engine in the compartment when the distance between the air inlet and the air outlet is too close is avoided, and the absorption of noise in the compartment body in the interior of the compartment body before the noise is transmitted to the outside through the wind scooper is enhanced.

In some embodiments, the at least one air inlet includes a first air inlet 501 and a second air inlet 502. The at least one wind scooper 4 includes a first wind scooper disposed corresponding to the first wind inlet 501 and a second wind scooper disposed corresponding to the second wind inlet 502. The arrangement helps to improve the introduction of air volume outside the cabin to enhance heat dissipation to the engines within the cabin.

In some embodiments, the engine compartment includes a plurality of interconnected components, and a first sealing device may be disposed between each of the interconnected components. The first sealing arrangement facilitates reducing noise leakage from the interior of the engine compartment.

The embodiment of the utility model also discloses a power device, this power device includes the engine compartment, engine 20 and the radiator 30 of above-mentioned embodiment. The engine 20 is located within the engine compartment. The radiator 30 is located in a cabin body of the engine compartment, and serves to radiate heat from the engine 20. The power device of the present embodiment, to which the engine compartment of the above-described embodiment is applied, also has advantageous effects corresponding to the engine compartment of the above-described embodiment.

As shown in fig. 4, the engine 20 is provided at the rear portion (left side in fig. 4) of the cabin, the radiator 30 is provided above the front side of the engine 20, and the air outlet 101 is provided on the cabin directly above the radiator 30. The at least one air inlet includes a first air inlet 501 disposed at the bottom of the nacelle and located in front of the engine 20. The at least one wind scooper 4 includes a first wind scooper corresponding to the first wind inlet 501, and a wind outlet of the first wind scooper faces the engine 20. The at least one air inlet includes a second air inlet 502 disposed at the bottom of the nacelle and below the engine 20. The at least one wind scooper 4 comprises a second wind scooper corresponding to the second wind inlet 502, and a wind outlet of the second wind scooper faces to the rear side of the cabin.

The first wind scooper is disposed at the bottom of the cabin and located in front of the engine, and the air outlet of the first wind scooper faces the engine 20, so that in addition to the above effects of reducing noise pollution to surrounding operators and drivers, as indicated by the airflow flow direction arrow shown in fig. 4, the airflow discharged from the first wind scooper can contact with most of the front side surface of the engine, and then the airflow is discharged from the air outlet 101 after the heat of the radiator is dissipated, which is beneficial to improving the heat dissipation effect. The second air inlet 502 and the second air guiding cover are arranged below the engine 20, and the air outlet faces the rear side face of the cabin body, so that the bottom and the rear side face of the engine can be cooled, and meanwhile, the top of the engine can be cooled. When the first air guide cover and the second air guide cover are arranged at the same time, the engine can be surrounded by airflow entering the cabin body, and the heat dissipation effect on the engine is increased.

In some embodiments, the at least one air inlet includes a third air inlet 701 located on the rear side of the nacelle, the third air inlet 701 being located above the engine 20 to introduce air outside the nacelle to dissipate heat from the upper portion of the engine 20. The third air inlet 701 is arranged to contribute to enhancing the heat dissipation effect on the top of the engine, and when the third air inlet 701 and the second air guiding cover are arranged at the same time, the air entering from the third air inlet 701 can also drive the air exhausted from the second air guiding cover to flow to the top of the engine, so that the fluidity of the air in the cabin and the heat dissipation effect on the engine are increased.

In some embodiments, the area of the top of the nacelle near the third air inlet 701 sinks relative to the area where the air outlet 101 is located. This arrangement facilitates the contact of the wind entering from the third wind inlet 701 with the top of the engine, further increasing the heat radiation effect to the engine.

The embodiment of the utility model provides a still disclose an engineering machine tool, including foretell power device. The working machine is, for example, a two-wheel slot milling machine.

In some embodiments, the at least one air inlet includes a third air inlet 701 located on the rear side of the nacelle, the third air inlet 701 is located above the engine 20 to introduce air outside the nacelle to dissipate heat from the upper portion of the engine 20, the construction machine further includes a counterweight 11 located at the rear of the nacelle, and a sound absorbing material is disposed between the counterweight 11 and the rear side of the engine. The arrangement is beneficial to absorbing the noise propagated from the rear side surface of the engine compartment and the third air inlet 701, so that the heat dissipation effect of the engine can be improved, and meanwhile, the influence of the noise generated in the cabin on operators and drivers can be reduced.

In some embodiments, the work machine comprises a turret carrying the power plant, and a second sealing device 10 is arranged between the nacelle and the turret.

The technical solution of the present invention is further explained with reference to fig. 1 to 4.

As shown in fig. 1 and 4, the present embodiment discloses an engine compartment of a two-wheel slot milling machine, which mainly includes a compartment body fixed on a turntable 9 of the two-wheel slot milling machine. The bottom and the rear part of the cabin body are provided with air inlets, and the top of the cabin body is provided with an air outlet; an air inlet at the bottom is provided with an air guide cover 4; the upper rear sealing plate 12 near the air inlet of the rear part sinks relative to the upper sealing plate 1 at which the air outlet is positioned; sound-absorbing materials are pasted inside the cabin body; the bottom and the side surfaces of the cabin body are sealed.

The cabin body comprises an upper sealing plate 1, a side door 2, a front sealing plate 3, a first air guide cover, a bottom plate 5, a second air guide cover, a rear sealing plate 7, a sealing device 8, a sealing device 9 and an upper rear sealing plate 12.

The cabin upper sealing plate 1 is provided with an air outlet 101, and the air outlet 101 is located above the front side of the engine 20 and directly above the radiator 30. The bottom plate 5 of the cabin body is provided with a first air inlet 501 and a second air inlet 502, the first air inlet 501 is positioned at the bottom of the front side of the engine, and the second air inlet 502 is positioned at the bottom of the engine. The rear sealing plate 7 of the cabin body is provided with a third air inlet 701, and the third air inlet 701 is positioned above the rear side of the engine. A first air guiding cover is arranged at the first air inlet 501, and a second air guiding cover is arranged at the second air inlet 502. The first air inlet 501, the second air inlet 502, the third air inlet 701 and the air outlet 101 form a heat dissipation air duct around the engine in the cabin.

As shown in fig. 2, the inner wind chamber 41 and the outer wind chamber 42 of the first wind scooper at the first wind inlet 501 are rectangular, one end of the inner wind chamber is open, the other end of the inner wind chamber is closed, and sound absorbing material is attached to the inner part of the inner wind chamber. The inner air chamber 41 and the outer air chamber 42 are respectively positioned right above and right below the first air inlet 501, the rear end of the inner air chamber 41 positioned right above the first air inlet 501 is opened and the front end is closed, and the front end of the outer air chamber 42 positioned right below the first air inlet 501 is opened and the rear end is closed. The inner air chamber 41 and the outer air chamber 42 are respectively connected to the bottom plate 5, and form an S-shaped air duct at the first air inlet 501 under the action of the air guiding part.

The inner wind chamber 41 and the outer wind chamber 42 of the second wind scooper at the second wind inlet 502 are rectangular structures, one end of the inner wind chamber is open, the other end of the inner wind chamber is closed, and sound-absorbing materials are attached to the inner parts of the inner wind chamber and the outer wind chamber. The inner air chamber 41 and the outer air chamber 42 are respectively positioned right above and right below the second air inlet 502, the rear end of the inner air chamber 41 positioned right above the second air inlet 502 is opened, the front end of the inner air chamber is closed, and the front end of the outer air chamber 42 positioned right below the second air inlet 502 is opened, and the rear end of the outer air chamber is closed. The inner air chamber 41 and the outer air chamber 42 are respectively connected to the bottom plate 5, and form an S-shaped air duct at the second air inlet 502 under the action of the air guiding part.

The third air inlet 701 is located at the upper part of the rear sealing plate 7 and is a mesh air inlet. The rear sealing plate 12 on the cabin body is positioned above the engine, is vertical to the rear sealing plate 7 in the horizontal direction, sinks relative to the upper sealing plate 1 where the air outlet 101 is positioned, and the inner side of the upper rear sealing plate 12 is pasted with sound absorption materials. Sound-absorbing materials are adhered to the periphery of the outer side of the rear sealing plate 7. The sound absorbing material fills the gap between the rear sealing plate 7 and the counterweight 11.

The joint of the bottom plate 5 and the rotary table 9 is provided with a sealing device 8. The joint of the side door 2, the front sealing plate 3, the rear sealing plate 7 and the rotary table 9 is provided with a sealing device 10. The inside of the side door 2 is fully pasted with sound absorption materials, and sealing devices are arranged among all door gaps of the side door 2.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.

Claims

1. An engine compartment is characterized by comprising a compartment body, wherein the compartment body is used for accommodating an engine (20) and ventilating and radiating the engine (20), the compartment body comprises at least one air inlet and an air outlet (101), the at least one air inlet is arranged at the bottom of the compartment body and/or the rear part of the compartment body, and the air outlet is positioned at the top of the compartment body.

2. The nacelle according to claim 1, characterized in that it comprises at least one wind scooper (4), each wind scooper (4) being arranged in correspondence with one air inlet, the wind scooper (4) being arranged at the corresponding air inlet of the nacelle for guiding air outside the nacelle into the nacelle through the corresponding air inlet for dissipating heat from the engine (20) inside the nacelle.

3. Nacelle according to claim 2, wherein said wind scooper (4) comprises:

the outer air chamber (42) is arranged on the outer side of the cabin body and comprises an air inlet which is arranged on the side wall of the outer air chamber (42) and is used for receiving air outside the cabin body;

the inner air chamber (41) is arranged on the inner side of the cabin body, is communicated with the outer air chamber (42) through the corresponding air inlet and comprises an air outlet which is arranged on the side wall of the inner air chamber (41) and is used for outputting air to the inside of the cabin body.

4. The engine compartment of claim 3, wherein said exhaust outlet is oriented opposite said intake opening.

5. The nacelle according to claim 3, wherein the air guiding cover (4) further comprises an air guiding portion, which is disposed in the air guiding cover (4) and between the air inlet and the air outlet, and is configured to prevent any position of the air inlet from being in linear communication with any position of the air outlet.

6. An engine compartment according to claim 5, characterised in that the air guiding portion comprises a wind deflector (43) arranged on the inner wall of the air guiding hood (4) between the air intake and the air outlet.

7. The nacelle according to claim 6, wherein a plurality of wind deflectors (43) are arranged at intervals to form a serpentine flow path between the air intake opening and the air exhaust opening.

8. Nacelle according to claim 5, wherein the air scoop (4) comprises a sound-absorbing material arranged on the inner wall of the air scoop (4) and/or on the air scoop.

9. Nacelle according to claim 2, wherein the wind scooper (4) is arranged at the bottom of the nacelle.

10. The engine compartment of any one of claims 2 to 9,

the at least one air inlet comprises a first air inlet (501) and a second air inlet (502);

the at least one wind scooper (4) comprises a first wind scooper arranged corresponding to the first wind inlet (501) and a second wind scooper arranged corresponding to the second wind inlet (502).

11. Nacelle according to any one of claims 1 to 9, characterised in that it comprises a plurality of interconnected components, between each of which a first sealing means is provided.

12. A power plant, comprising:

an engine compartment according to any one of claims 1 to 11;

an engine (20) located within a cabin of the engine compartment; and

a radiator (30) located within a cabin of the engine compartment for dissipating heat from the engine (20).

13. The power plant according to claim 12, characterized in that the engine (20) is arranged at the rear part of the cabin, the radiator (30) is arranged above the front side of the engine (20), the air outlet (101) is arranged on the cabin and is positioned right above the radiator (30), wherein,

the at least one air inlet comprises a first air inlet (501) which is arranged at the bottom of the cabin body and is positioned in front of the engine (20); and/or the presence of a gas in the gas,

the at least one air inlet comprises a second air inlet (502) which is arranged at the bottom of the cabin body and is positioned below the engine (20); and/or the presence of a gas in the gas,

the at least one air inlet comprises a third air inlet (701) positioned on the rear side surface of the cabin, and the third air inlet (701) is positioned above the engine (20) so as to introduce air outside the cabin to dissipate heat of the upper part of the engine (20).

14. The power plant according to claim 13, wherein the engine compartment comprises at least one wind scooper (4), each wind scooper (4) is disposed corresponding to one wind inlet, the wind scooper (4) is disposed at the corresponding wind inlet of the cabin for guiding air outside the cabin into the cabin through the corresponding wind inlet to dissipate heat of the engine (20) inside the cabin,

the at least one air guide cover (4) comprises a first air guide cover corresponding to the first air inlet (501), and an air outlet of the first air guide cover faces the engine (20);

the at least one wind scooper (4) comprises a second wind scooper corresponding to the second wind inlet (502), and a wind outlet of the second wind scooper faces to the rear side face of the cabin body.

15. The power plant according to claim 13, characterized in that the area of the top of the cabin close to the third air inlet (701) is sunk with respect to the position of the area where the air outlet (101) is located.

16. A working machine, characterized by comprising a power unit according to any one of claims 12-15.

17. The working machine according to claim 16, wherein the at least one air inlet includes a third air inlet (701) located on a rear side of the cabin, the third air inlet (701) is located above the engine (20) to introduce air outside the cabin to dissipate heat from an upper portion of the engine (20), the working machine further includes a counterweight (11) disposed at a rear portion of the cabin, and a sound absorbing material is disposed between the counterweight (11) and the rear side of the engine cabin.

18. A working machine according to claim 16, characterized in that the working machine comprises a turntable carrying the power means, and that a second sealing device is arranged between the engine compartment and the turntable.

19. The work machine of claim 16, wherein the work machine is a two-wheel slot milling machine.