Exhaust mechanism and generator set

Abstract

The invention provides an exhaust mechanism and a generator set. The exhaust mechanism comprises a plurality of exhaust assemblies. The exhaust assemblies are arranged in the exhaust outlets of the power generation box, the multiple exhaust assemblies are arranged in the vertical direction, and an exhaust channel is formed between every two adjacent exhaust assemblies. The exhaust channel communicates with the inside and outside of the power generation box. The exhaust channel comprises a first channel, a second channel and a third channel. One end of the first channel communicates with an inner cavity of the power generation box. The second channel is located below the first channel and is parallel to the first channel. The upper end of the third channel communicates with one end of the first channel away from the inner cavity of the power generation box, and the lower end of the third channel communicates with one end of the second channel close to the inner cavity of the power generation box. One end of the second channel away from the third channel communicates with the outside. Air blown out of the air-cooled radiator sequentially passes through the first channel, the third channel and the second channel and then is exhausted, noise sound waves make contact with the inner wall of the channel to generate reflection when passing through the air exhaust channel composed of the three sections, part of the reflection waves return along the original path, and therefore noise transmitted out of the air exhaust opening is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of power generation equipment, in particular to an exhaust mechanism and also to a generator set. Background Art

[0002] The generator set is usually installed in a generator box. When working, the engine inside it will generate noise and heat. An air-cooled radiator is installed on the engine, and an exhaust port is opened on the generator box. The airflow driven by the air-cooled radiator passes through the surface of the engine and is discharged from the exhaust port.

[0003] In the prior art, air is discharged through the exhaust port, and noise is also transmitted from there. How to reduce the noise there is a problem that needs to be solved. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an exhaust mechanism and a generator set, which can solve or at least alleviate one or more of the above-mentioned problems and other problems in the prior art.

[0005] The present invention provides an exhaust mechanism, comprising:

[0006] An exhaust assembly is arranged in the exhaust port of the power generation box, and a plurality of exhaust assemblies are arranged vertically, and an exhaust channel is formed between two adjacent exhaust assemblies;

[0007] The exhaust passage comprises:

[0008] A first channel, one end of which is connected to the inner cavity of the generator box;

[0009] a second channel located below the first channel and parallel to the first channel; and

[0010] The third channel has an upper end connected to an end of the first channel away from the inner cavity of the generator box, and a lower end connected to an end of the second channel close to the inner cavity of the generator box.

[0011] Preferably, the upper surface of the first channel and the side of the third channel away from the inner cavity of the generator box are transitioned by setting a concave first arc surface; the side of the third channel close to the inner cavity of the generator box and the lower surface of the second channel are transitioned by setting a concave second arc surface; the first arc surface and the second arc surface are opposite to each other.

[0012] Preferably, the exhaust assembly comprises:

[0013] A strip-shaped connecting plate, which is transversely arranged in the air outlet, and one end of which is away from the inner cavity of the generator box is bent downward to form the first arc surface; and

[0014] A strip-shaped connecting block is disposed transversely in the air outlet, and its lower end is connected to the upper end of the strip-shaped connecting plate;

[0015] The first channel is formed between the upper end surface of the strip connecting block and the lower end surface of the strip connecting plate in the adjacent exhaust assembly; the third channel is formed between the end of the strip connecting block away from the inner cavity of the generator box and the curved end of the strip connecting plate; the side of the strip connecting plate away from the first curved surface is the lower surface of the second channel.

[0016] Preferably, a strip-shaped installation opening is provided on a surface of the strip-shaped connecting block that is away from the strip-shaped connecting plate and extends along its length direction; the exhaust assembly further comprises:

[0017] The sound-absorbing column is installed in the strip-shaped installation opening.

[0018] Preferably, a sound absorbing cavity is provided on the strip-shaped connecting block; a sound absorbing channel is provided on a side of the strip-shaped connecting block away from the strip-shaped connecting plate; and the sound absorbing channel is communicated with the sound absorbing cavity.

[0019] Preferably, a weight-reducing groove is provided at one end of the strip-shaped connecting block close to the inner cavity of the generator box.

[0020] Preferably, the end of the strip connecting plate away from the inner cavity of the generator box is lower than the end close to the inner cavity of the generator box; the first channel and the second channel are both inclined; the curved end of the strip connecting plate can block the entire cross-section of the first channel.

[0021] Preferably, a first noise reduction opening extending along the length direction of the strip-shaped installation opening is provided on the inner wall of the strip-shaped installation opening.

[0022] Preferably, a second noise reduction opening extending along the length direction of the strip-shaped connecting block is provided on the inner wall of the sound absorbing cavity.

[0023] The present invention also provides a generator set, comprising any one of the exhaust mechanisms described above.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] In the technology of the present invention, the wind blown out by the air-cooled radiator passes through the first channel, the third channel and the second channel in sequence and is then discharged. When passing through the exhaust channel composed of the above three sections, the noise sound waves come into contact with the inner wall of the channel and are reflected. Part of the reflected waves return along the original path, thereby reducing the noise transmitted from the exhaust port. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0027] Figure 1 A three-dimensional diagram of a generator box of a generator set in one embodiment of the present invention;

[0028] Figure 2 for Figure 1 A three-dimensional diagram of the central exhaust mechanism;

[0029] Figure 3 for Figure 2 Another stereogram of

[0030] Figure 4 for Figure 3 Front view at A;

[0031] Figure 5 for Figure 4 Schematic diagram of the propagation path of noise waves in the central exhaust duct.

[0032] Reference numerals:

[0033] 10. Exhaust assembly; 11. Exhaust channel; 111. First channel; 112. Second channel; 113. Third channel; 114. First arc surface; 115. Second arc surface; 12. Strip connecting plate; 13. Strip connecting block; 131. Strip mounting opening; 132. Sound absorbing cavity; 133. Sound absorbing channel; 134. Weight reduction groove; 135. First noise reduction opening; 136. Second noise reduction opening; 14. Sound absorbing column; 15. Strip baffle;

[0034] 20. Generator box;

[0035] 30. Exhaust vent. DETAILED DESCRIPTION

[0036] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0037] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0038] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0039] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0040] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0042] See also Figures 1 to 5 , this embodiment provides an exhaust mechanism, including multiple exhaust components 10.

[0043] The exhaust assembly 10 is disposed in the exhaust port 30 of the power generation box 20 , and a plurality of exhaust assemblies 10 are arranged vertically, and an exhaust passage 11 is formed between two adjacent exhaust assemblies 10 . The exhaust passage 11 communicates with the inside and outside of the power generation box 20 .

[0044] The exhaust passage 11 includes a first passage 111 , a second passage 112 and a third passage 113 .

[0045] One end of the first channel 111 is in communication with the inner cavity of the generator box 20. The second channel 112 is located below the first channel 111 and is parallel to the first channel 111. The upper end of the third channel 113 is in communication with the end of the first channel 111 away from the inner cavity of the generator box 20, and the lower end of the third channel 113 is in communication with the end of the second channel 112 close to the inner cavity of the generator box 20. The end of the second channel 112 away from the third channel 113 is in communication with the outside. Specifically, the first channel 111, the third channel 113 and the second channel 112 are in a Z shape as a whole.

[0046] In this embodiment, the wind blown out by the air-cooled radiator is discharged after passing through the first channel 111, the third channel 113 and the second channel 112 in sequence. When passing through the exhaust channel 11 composed of the above three sections, the noise sound waves come into contact with the inner wall of the channel and are reflected. Part of the reflected waves return along the original path, thereby reducing the overall energy of the noise transmission, thereby reducing the noise transmitted from the exhaust port 30.

[0047] In one embodiment, the upper surface of the first channel 111 and the side of the third channel 113 away from the inner cavity of the generator box 20 are transitioned by setting a recessed first curved surface 114; the side of the third channel 113 close to the inner cavity of the generator box 20 and the lower surface of the second channel 112 are transitioned by setting a recessed second curved surface 115; the first curved surface 114 and the second curved surface 115 are opposite to each other.

[0048] In this embodiment, see Figure 5 The transmission path of the noise sound wave, after passing through the first channel 111, the noise sound wave contacts the first curved surface 114 and is reflected. Since the first curved surface 114 is a concave curved surface, the noise sound wave is gathered after passing through the first curved surface 114. The concentrated noise sound wave continues to propagate and contacts the second curved surface 115 and is reflected again. The noise sound wave passes through the second curved surface 115 and is concentrated and reflected to the first curved surface 114 and is reflected from the first channel 111 by the first curved surface 114 back to the generator box 20. In the above process, the noise sound wave is reflected multiple times, so that part of the noise returns to the generator box 20 along the original path, thereby reducing the noise transmitted outward from the exhaust port 30. In addition, the noise sound wave converges at both the first curved surface 114 and the second curved surface 115. In the transmission process of the noise sound wave, the sound wave spillover is reduced, thereby further reducing the noise transmitted outward from the exhaust port 30.

[0049] In one embodiment, the exhaust assembly 10 includes a strip-shaped connecting plate 12 and a strip-shaped connecting block 13 .

[0050] The strip connecting plate 12 is disposed transversely in the air outlet 30, and one end of the strip connecting plate 12 away from the inner cavity of the generator box 20 is bent downward to form a first arc surface 114. The strip connecting block 13 is disposed transversely in the air outlet 30, and the lower end of the strip connecting block 13 is connected to the upper end of the strip connecting plate 12.

[0051] A first channel 111 is formed between the upper end surface of the strip connection block 13 and the lower end surface of the strip connection plate 12 in the adjacent exhaust assembly 10. A third channel 113 is formed between the end of the strip connection block 13 away from the inner cavity of the generator box 20 and the curved end of the strip connection plate 12. The side of the strip connection plate 12 away from the first curved surface 114 is the lower surface of the second channel 112. In addition, the second channel 112 has only a lower surface and no upper surface. The lower surface of the second channel 112 and the straight line of the end surface of the strip connection block 13 away from the inner cavity of the generator box 20 are the second curved surface 115.

[0052] In this embodiment, the air flows out from the exhaust channel 11 formed between the strip-shaped connecting plate 12 and the strip-shaped connecting block 13. Figure 5 The direction of the arrow is the propagation direction of the noise sound wave, and the noise sound wave is reflected back to the generator box 20 in the exhaust channel 11. In addition, due to the existence of the first curved surface 114 and the second curved surface 115, the airflow flows out of the exhaust channel 11 more smoothly and the heat dissipation effect is better.

[0053] In one embodiment, a strip-shaped installation opening 131 is provided along the length direction of the strip-shaped connection block 13 on a side facing away from the strip-shaped connection plate 12. The exhaust assembly 10 further includes a sound-absorbing column 14, which is clamped in the strip-shaped installation opening 131. Specifically, the sound-absorbing column 14 is made of a flame-retardant polyester sound-absorbing material, and the sound-absorbing column 14 can directly absorb noise, and can also absorb vibrations of the strip-shaped connection block 13 and the strip-shaped connection plate 12, thereby reducing the noise emitted by the strip-shaped connection block 13 and the strip-shaped connection plate 12.

[0054] In one embodiment, a sound absorbing cavity 132 is provided on the strip connecting block 13. A sound absorbing channel 133 is provided on the side of the strip connecting block 13 away from the strip connecting plate 12; the sound absorbing channel 133 is connected to the sound absorbing cavity 132. Specifically, the sound absorbing cavity 132 and the sound absorbing channel 133 correspond one to one, and the number of the sound absorbing cavity 132 and the number of the sound absorbing channel 133 can be one or more.

[0055] In this embodiment, the sound absorbing channel 133 and the sound absorbing cavity 132 together form a Helmholtz resonator. The noise is absorbed when passing through the sound absorbing channel 133, thereby reducing the noise transmitted from the air outlet 30.

[0056] In one embodiment, a weight-reducing groove 134 is formed at one end of the strip-shaped connecting block 13 close to the inner cavity of the generator box 20 .

[0057] In one embodiment, the end of the strip connecting plate 12 away from the inner cavity of the generator box 20 is lower than the end thereof close to the inner cavity of the generator box 20; the first channel 111 and the second channel 112 are both inclined; the curved end of the strip connecting plate 12 can block the entire cross section of the first channel 111. Specifically, the cross-sectional dimension of the first channel 111 is tentatively set as S1, and the projection of the curved end of the strip connecting plate 12 on the cross section of the first channel 111 is S2, and S1 is smaller than S2, so that the curved end of the strip connecting plate 12 can block the entire cross section of the first channel 111.

[0058] In this embodiment, the curved end of the strip connecting plate 12 can prevent external dust or water droplets from entering the power generation box 20. The curved end of the strip connecting plate 12 can provide a better blocking effect.

[0059] In one embodiment, a first noise reduction opening 135 extending along the length direction of the strip-shaped installation opening 131 is provided on the inner wall thereof. A second noise reduction opening 136 extending along the length direction of the strip-shaped connecting block 13 is provided on the inner wall of the sound absorbing cavity 132. Specifically, the cross-sections of the first noise reduction opening 135 and the second noise reduction opening 136 are both cylindrical, which can achieve a better noise reduction effect.

[0060] In this embodiment, the first noise reduction port 135 and the second noise reduction port 136 are provided to facilitate the self-dissipation of noise after the noise enters the ports through reflection, thereby reducing the noise.

[0061] This embodiment provides a generator set, including any one of the above-mentioned exhaust mechanisms.

[0062] In the description of the present invention, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. An exhaust mechanism, characterized in that: include: An exhaust assembly (10) is disposed in an exhaust port (30) of a power generation box (20), and a plurality of exhaust assemblies (10) are arranged in a vertical arrangement, with an exhaust passage (11) formed between two adjacent exhaust assemblies (10); The exhaust passage (11) comprises: A first channel (111), one end of which is in communication with the inner cavity of the power generation box (20); a second channel (112), located below the first channel (111) and parallel to the first channel (111); and The third channel (113) has an upper end connected to an end of the first channel (111) away from the inner cavity of the generator box (20), and a lower end connected to an end of the second channel (112) close to the inner cavity of the generator box (20).

2. An exhaust mechanism according to claim 1, characterized in that: The upper surface of the first channel (111) and the side of the third channel (113) away from the inner cavity of the generator box (20) are transitioned by providing a concave first curved surface (114); the side of the third channel (113) close to the inner cavity of the generator box (20) and the lower surface of the second channel (112) are transitioned by providing a concave second curved surface (115); the first curved surface (114) and the second curved surface (115) are opposite to each other.

3. An exhaust mechanism according to claim 1, characterized in that: The exhaust assembly (10) comprises: A strip-shaped connecting plate (12) is transversely arranged in the air outlet (30), and one end of the strip-shaped connecting plate away from the inner cavity of the power generation box (20) is bent downward to form the first curved surface (114); and A strip-shaped connecting block (13) is transversely arranged in the air outlet (30), and its lower end is connected to the upper end of the strip-shaped connecting plate (12); The first channel (111) is formed between the upper end surface of the strip connecting block (13) and the lower end surface of the strip connecting plate (12) in the adjacent exhaust assembly (10); the third channel (113) is formed between an end of the strip connecting block (13) away from the inner cavity of the generator box (20) and the bent end of the strip connecting plate (12); and the side of the strip connecting plate (12) away from the first curved surface (114) is the lower surface of the second channel (112).

4. An exhaust mechanism according to claim 3, characterized in that: A strip-shaped installation opening (131) is provided on a surface of the strip-shaped connection block (13) which faces away from the strip-shaped connection plate (12) along its length direction; the exhaust assembly (10) further comprises: The sound absorbing column (14) is installed in the strip-shaped installation opening (131).

5. An exhaust mechanism according to claim 3, characterized in that: A sound absorbing cavity (132) is provided on the strip-shaped connecting block (13); a sound absorbing channel (133) is provided on a side of the strip-shaped connecting block (13) away from the strip-shaped connecting plate (12); and the sound absorbing channel (133) is in communication with the sound absorbing cavity (132).

6. An exhaust mechanism according to claim 3, characterized in that: A weight-reducing groove (134) is provided at one end of the strip-shaped connecting block (13) close to the inner cavity of the power generation box (20).

7. An exhaust mechanism according to claim 3, characterized in that: One end of the strip connecting plate (12) away from the inner cavity of the generator box (20) is lower than the end thereof close to the inner cavity of the generator box (20); the first channel (111) and the second channel (112) are both arranged at an inclination; and the bent end of the strip connecting plate (12) can cover the entire cross section of the first channel (111).

8. An exhaust mechanism according to claim 4, characterized in that: The inner wall of the strip-shaped installation opening (131) is provided with a first noise reduction opening (135) extending along its length direction.

9. The exhaust mechanism according to claim 5, characterized in that: A second noise reduction opening (136) extending along the length direction of the strip-shaped connecting block (13) is provided on the inner wall of the sound absorbing cavity (132).

10. A generator set, characterized in that: Comprising the exhaust mechanism as described in any one of claims 1-9.

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