CN107407191B - Booster silencer and booster - Google Patents

Abstract

A kind of booster silencer, cantilever support have in compressor case: cricoid the first side wall；Second sidewall, the second sidewall are located at the side opposite with compressor case relative to the first side wall, and the outside air importing space for guiding outside air to air induction port is formed between second sidewall and the first side wall；Muffler element, the muffler element are set to outside air and import space；And filter, the filter is set to the peripheral side of muffler element along the circumferentially extending that outside air imports space, the first side wall includes to the peripheral side of filter the first flange outstanding, second sidewall includes circumferentially being equipped with multiple fixation holes in the first flange and the second flange respectively with the peripheral side of the mode opposite with the first flange to filter the second flange outstanding.

Description

Booster silencer and booster

Technical field

The present invention relates to booster silencer and boosters.

Background technique

As a means of the thermal efficiency for improving internal combustion engine, there is known boosters.Patent Document 1 discloses one The booster silencer for the cylindrical shape that the air induction port side of kind and the compressor case in booster links.In the noise elimination In device, the sucking of air can be carried out from the periphery of silencer towards center.At this point, the noise and air of the compressor of booster Inhalation flow is driven in the wrong direction and is radiated from the center of silencer towards periphery.In the booster silencer documented by patent document 1, In order to eliminate the noise, between the internal diameter and outer diameter of silencer circumferentially with it is equidistant and it is radially aligned have it is multiple Acoustic splitter.

In order to reduce the temperature of the air imported to compressor, the booster silencer documented by patent document 1 On be provided with covering silencer a part muffler cover so that the air away from the farther away side of internal combustion engine (compares low temperature Air) it is preferentially imported than the air (air for comparing high temperature) of the side of close internal combustion engine.

Existing technical literature

Patent document

Patent document 1: International Publication 2013/089159

The booster documented by patent document 1 be equipped on silencer in the silencer by cylindrical shape away from compression The large-scale muffler cover of half of the farther away side wall of machine shell (plectane 31 of Fig. 2 in patent document 1) or so covering.Cause This, after booster is set, it is difficult to according to the circumferential Temperature Distribution of the air imported from silencer to the circumferential direction of silencer On the fitting limit of muffler cover be adjusted.

Summary of the invention

The technical problems to be solved by the invention

The present invention is made into view of previous technical problem as described above, and its purpose is to provide one kind to hold The booster silencer for the fitting limit for adjusting the muffler cover in circumferential direction of changing places and the increasing for having the booster silencer Depressor.

For solving the means of technical problem

(1) booster of an at least embodiment of the invention is air induction port side with compressor case with silencer The booster silencer of connection, and having: cricoid the first side wall, the first side wall around defined central axis along in this The direction that mandrel is intersected extends；Second sidewall, the second sidewall are located at and the compressor case relative to the first side wall Opposite side, and extend along the extending direction of the first side wall, the shape between the second sidewall and the first side wall Space is imported at the outside air for guiding outside air to the air induction port；Muffler element, silencer member Part is set to the outside air and imports space；And filter, the filter import the circumferential direction in space along the outside air It is extended in the peripheral side of the muffler element, the first side wall includes to the peripheral side of the filter outstanding One flange, the second sidewall include with the peripheral side of mode to the filter opposite with first flange outstanding Two flanges are circumferentially equipped with multiple bolts hole (fixation hole) in first flange and second flange respectively.

According to booster silencer documented by above-mentioned (1), muffler cover can be consolidated using bolt (secure component) Due to the bolt hole (fixation hole) of the first flange and the bolt hole (fixation hole) of the second flange, wherein above-mentioned muffler cover is to cover The mode of the range of a part in circumferential direction covered in the opening formed between the first flange and the second flange is constituted.Therefore, (there can be such as Japanese U-shaped (rectangular U-shaped, rectangular U-shaped with U) using easy structure The structure in section) muffler cover covering opening a part, in addition, can be according to the position of bolt hole (fixation hole) easily Adjust the fitting limit of the muffler cover in circumferential direction.

Thus, it is set in surrounding by booster there are in the case where the environment of the heat sources such as internal combustion engine, to such as flange Between opening circumferential direction on Temperature Distribution be measured, being capable of the relatively high range of temperature in circumferential direction only in the openings The muffler cover for having circumferential lengths corresponding with the range is installed.Thereby, it is possible to the installations by muffler cover effectively Making the temperature of the air imported to compressor reduces.

In addition, capableing of the muffler cover of the structure of simple to install as described above, therefore, even if installation muffler cover, disappears The center of gravity of sound device is also difficult to far from compressor case.Therefore, even if installation muffler cover, the vibration of silencer in booster operating It is dynamic to be also difficult to become larger.Thus, load is difficult to be applied to the installation of linking part, muffler cover between silencer and compressor case Portion's (bolt), so as to inhibit the breakage of the linking part, mounting portion.

(2) in several embodiments, the booster silencer according to documented by above-mentioned (1), wherein the booster is used Silencer is also equipped with muffler cover, which will be in the opening that formed between first flange and second flange Circumferential direction on a part range covering, the muffler cover is fixed on the bolt hole of first flange using multiple bolts With the bolt hole of second flange.

It is relatively high by the temperature in circumferential direction only in the opening according to booster silencer documented by above-mentioned (2) Range installation have circumferential lengths corresponding with the range muffler cover, can effectively make to compressor import sky The temperature of gas reduces.In addition, even if installation muffler cover, the center of gravity of silencer is also difficult to separate as recorded in above-mentioned (1) Therefore compressor case is able to suppress the increase of the vibration of the silencer when operating of booster.

(3) in several embodiments, the booster silencer according to documented by above-mentioned (2), wherein the silencer Cover the peripheral side that the filter is set in a manner of with the filter interval.

According to booster silencer documented by above-mentioned (3), can by air from by muffler cover circumferential one end, One end side opening that filter, the first flange and the second flange are formed is to convex by muffler cover, filter, the first flange and second The space that edge surrounds imports.In addition, can by air from by circumferential the other end of muffler cover, filter, the first flange and The another side that second flange is formed is open to be led to the space surrounded by muffler cover, filter, the first flange and the second flange Enter.Thus, silencer can import well air from circumferential whole region, therefore, be able to suppress air to the total of silencer The reduction of import volume inhibits the air of the high temperature generated by heat sources such as internal combustion engines to be imported into simultaneously.

(4) in several embodiments, the booster silencer according to documented by any one of above-mentioned (1) to (3), In, if the distance between the central axis and filter are set as R0, by the outer peripheral edge of the central axis and first flange The distance between be set as R1, and the distance between the outer peripheral edge of the central axis and second flange is set as R2, then met R1 > 1.1R0 and R2 > 1.1R0.

According to booster silencer documented by above-mentioned (4), be mounted with will be between the first flange and the second flange A part in circumferential direction in the opening of formation range covering muffler cover when, can make by muffler cover, filter, The space that first flange and the second flange surround to broaden to a certain degree.Therefore, in the state of being mounted with muffler cover, increase Depressor also can import well air from circumferential whole region with silencer, eliminate the noise to air to booster so as to improve The effect that the reduction of total import volume of device is inhibited.

(5) in several embodiments, the booster silencer according to documented by any one of above-mentioned (1) to (4), In, first flange is arranged on the complete cycle of the first side wall, and second flange is on the complete cycle of the second sidewall Setting.

It, being capable of opening between the flange for being set to circumferential whole region according to booster silencer documented by above-mentioned (5) The muffler cover of the desired circumferential lengths of installation in desired circumferential range in mouthful.Thus, it is possible in view of circumferential whole The Temperature Distribution in a region and only temperature it is relatively high range installation have circumferential lengths corresponding with the range noise elimination Device cover.

(6) in several embodiments, the booster silencer according to documented by any one of above-mentioned (1) to (4), In, first flange is only set to the range of described circumferential a part of the first side wall, and second flange is only set to The range of described circumferential a part of the second sidewall.

The circumferential Temperature Distribution of booster silencer in the setting environment of booster can be in setting booster Before to be subject to prediction to a certain degree in the case where, can also be by the first flange and the second flange as recorded in above-mentioned (6) It is only set to the range of a part in circumferential direction respectively.In this case, for example, it can be in the setting environment of booster Temperature be easy to become relatively high circumferential range the first flange and the second flange be set, and after booster is set, be based on The circumferential Temperature Distribution actually measured is finely adjusted the fitting limit of the muffler cover in circumferential direction.As a result, and by One flange and the second flange compare the case where being arranged on complete cycle respectively, can simplify structure while inhibit by internal combustion engine etc. The importing for the high temperature air that heat source generates.

(7) booster of an at least embodiment of the invention has: compressor, the compressor include compressor case； The air induction port side of booster silencer, the booster silencer and the compressor case links, and cantilever support In the compressor case, wherein the booster with silencer be any one of above-mentioned (1) to (6) documented by booster Use silencer.

According to booster documented by above-mentioned (7), by having booster documented by any one of above-mentioned (1) to (6) With silencer, the temperature of the air imported to compressor can effectively be made to reduce by the installation of muffler cover, it therefore, can Workload needed for reducing the compression of compressor.In addition, as recorded in above-mentioned (1), even if installation muffler cover, silencer Center of gravity be also difficult to far from compressor case, therefore, in the operating of booster, the vibration of silencer is difficult to become larger.Thus, it bears Lotus is difficult to be applied to the mounting portion (bolt) of linking part between silencer and compressor case, muffler cover, so as to press down Make the breakage of the linking part, mounting portion.Thereby, it is possible to realize the stable operating of booster.

The effect of invention

At least one embodiment according to the present invention provides a kind of muffler cover that can be easily adjusted in circumferential direction The booster silencer of fitting limit and the booster for having the booster silencer.

Detailed description of the invention

Fig. 1 is the side view for indicating the outline structure of booster 100 of an embodiment.

Fig. 2 is the longitudinal section view by the booster of embodiment silencer 8 (along the axis of booster silencer 8 The cross-sectional view of line O) figure that is indicated together with a part of booster 100.

Fig. 3 is that the partial sectional view of the muffler element 28 of an embodiment (hangs down with the axes O of booster silencer 8 Straight cross-sectional view).

Fig. 4 is to indicate the booster of the configuration example as booster silencer 8 shown in Fig. 2 with silencer 8 (8A) Outline structure perspective view.

Fig. 5 is the solid for indicating for muffler cover 58 to be installed on the state after booster silencer 8 (8A) shown in Fig. 4 Figure.

Fig. 6 is to indicate the booster of the configuration example as booster silencer 8 shown in Fig. 2 with silencer 8 (8B) Outline structure perspective view.

Fig. 7 is the solid for indicating for muffler cover 58 to be installed on the state after booster silencer 8 (8B) shown in fig. 6 Figure.

Fig. 8 is the longitudinal section view by the booster of embodiment silencer 8 (along the axis of booster silencer 8 The cross-sectional view of line O) figure that is indicated together with a part of booster 100, be indicate for muffler cover 58 to be installed on it is shown in Fig. 2 The figure of state of the booster after silencer 8.

Fig. 9 is the side view for indicating one with reference to the outline structure of the booster of form.

Specific embodiment

Hereinafter, being illustrated referring to attached drawing to several embodiments of the invention.But, be recorded as embodiment or attached The purport of size, material, shape, its opposite configuration of constituent parts shown in figure etc. does not limit the scope of the present invention In this, only illustrate example.

For example, " in one direction ", " along a direction ", " parallel ", " orthogonal ", "center", " concentric " or " same The statement of the opposite or absolute configuration of the expressions such as axis " not only closely indicates such configuration, also illustrate that with tolerance or Person, the angle of left and right that identical function can be obtained, distance and the state relatively conjugated.

For example, " identical ", " equal " and " uniform " etc. indicates that the statement of the equal state of things not only closely indicates Equal state also illustrates that the state of the difference there are tolerance or the degree that can obtain identical function.

For example, quadrilateral shape, cylindrical shape etc. indicate that the statement of shape not only indicates the four of geometrically strict meaning The shapes such as side shape, cylindrical shape are also illustrated in the shape including bump, corner portion etc. in the range of capable of obtaining identical effect Shape.

On the other hand, " having ", " equipment ", " setting ", " comprising " or " having " constituent element are such states not It is the exclusive statement except the presence by other constituent elements.

Fig. 1 is the side view for indicating the outline structure of booster 100 of an embodiment.As shown in Figure 1, booster 100 Have turbine 2, compressor 4, pedestal 6 and booster silencer 8.

Turbine 2 has: turbine rotor 10, which is revolved using the exhaust of internal combustion engine discharge (not shown) Turn；And turbine casing 12, the turbine casing 12 accommodate turbine rotor 10.Above-mentioned internal combustion engine is also possible to such as argosy Oceangoing ship diesel engine.

Compressor 4 is that have the impeller 14 compressed by the rotation driving of turbine rotor 10 and the air inlet of opposite internal combustion engine With the centrifugal compressor of the compressor case 16 of receiving impeller 14.

Pedestal 6 is set between turbine 2 and compressor 4, and contains rotary shaft 18 being supported to the axis that can be rotated Bearing apparatus 20, the rotary shaft 18 link the impeller 14 of the turbine rotor 10 of turbine 2 and compressor 4.Pedestal 6 is configured to carry It is placed in ground g and supports at least part of the load of booster 100.

Fig. 2 is the longitudinal section view by the booster of embodiment silencer 8 (along the axis of booster silencer 8 The cross-sectional view of line O) figure that is indicated together with a part of booster 100.

As shown in Fig. 2, 22 side of air induction port of booster silencer 8 and compressor case 16 links, and cantilever branch It holds in compressor case 16.Booster silencer 8 includes the first side wall 24, second sidewall 26, muffler element 28 and mistake Filter 30.

The first side wall 24 is (to be in the form of diagram along the direction intersected with central axis O around defined central axis O The direction orthogonal with central axis O) the circular plate that extends.In the form of the illustration of diagram, in cricoid the first side wall 24 inner circumferential side is connected with the first side wall 24 is in the cylinder 7 that is arranged concentrically, in cylinder 7 by 16 side of compressor case Top is extended towards radial outside flange 32.Flange 32 with compressor case 16 22 side of air induction port formed Flange 34 links.Multiple radial reinforcers 36 are fixed in the range of the first side wall 24, cylinder 7 and flange 32, the One side wall 24, cylinder 7 and flange 32 are integrated securely by the radial reinforcer 36.

Second sidewall 26 is to be located at the side opposite with compressor case 16 relative to the first side wall 24 and along first The plectane that the extending direction of side wall 24 extends.Be formed between second sidewall 26 and the first side wall 24 for by outside air to The outside air that the air induction port 22 of compressor case 16 guides imports space 38.

Muffler element 28 is set to outside air and imports space 38, and be configured to make outside air import in space 38 with The noise of the retrograde compressor 4 of the inhalation flow of air is reduced.In the form of the illustration of diagram, muffler element 28 includes: Circular plate 40,42, the plate 40,42 are relative to each other；Sound-absorbing material 44, the sound-absorbing material 44 are sandwiched in plate 40 and Between one side wall 24；Sound-absorbing material 46, the sound-absorbing material 46 are sandwiched between plate 42 and second sidewall 26；And multiple partials Device 48, multiple acoustic splitter 48 imported along outside air space 38 circumferential direction (hereinafter, in the case where being abbreviated as " circumferential direction ", Refer to that outside air imports the circumferential direction in space 38.) be arranged between plate 40 and plate 42 at spaced intervals (referring to Fig. 3).

Filter 30 is circumferentially extended in the peripheral side of muffler element 28 on complete cycle.Filter 30 can also be with Including being for example circumferentially extended on complete cycle in the metal mesh of the peripheral side of muffler element 28 and circumferentially whole The dust-proof filter in the peripheral side of metal mesh is extended on week.

Fig. 4 is to indicate the booster of the configuration example as booster silencer 8 shown in Fig. 2 with silencer 8 (8A) Outline structure perspective view.Fig. 5 is after indicating for muffler cover 58 to be installed on booster silencer 8 (8A) shown in Fig. 4 State perspective view.Fig. 6 is to indicate that the booster of the configuration example as booster silencer 8 shown in Fig. 2 is eliminated the noise The perspective view of the outline structure of device 8 (8B).Fig. 7 is to indicate for muffler cover 58 to be installed on booster silencer 8 shown in fig. 6 The perspective view of state after (8B).In addition, for conveniently, the internal junction of booster silencer 8 is omitted in Fig. 4~Fig. 7 The structure of structure and the linking portion between compressor case 16.

In several embodiments, as shown in Figure 4 to 7, the first side wall 24 has prominent to the peripheral side of filter 30 Flange 54 (the first flange), second sidewall 26 has to the peripheral side of filter 30 flange 56 (the second flange) outstanding, Flange 54 and flange 56 are respectively along being circumferentially with multiple bolt hole 54a, 56a.

As a result, as shown in figure 5 and figure 7, muffler cover 58 can be fixed on the multiple of flange 54 using multiple bolts 62 A part of bolt hole in multiple bolt hole 56a of a part of bolt hole and flange 56 in bolt hole 54a, wherein above-mentioned to disappear Sound device cover 58 is configured to the range covering of a part in the circumferential direction in the opening 60 that will be formed between flange 54 and flange 56. Therefore, can using easy structure (such as with as represented by Fig. 8 Japanese U-shaped (with U U-shaped at right angle, Rectangular U-shaped) section structure) muffler cover 58 covering opening 60 a part, in addition, being capable of root The fitting limit of the muffler cover 58 in circumferential direction is easily adjusted according to the circumferential position of bolt hole 54a, 56a.

Thus, it is set in surrounding by booster 100 there are in the case where the environment of the heat sources such as internal combustion engine, for example, energy Temperature Distribution in enough circumferential directions to opening 60 is measured, only in the relatively high range of the temperature in the circumferential direction in opening 60 The muffler cover 58 for having circumferential lengths corresponding with the range is installed.For example, can also install the circumferential direction in opening 60 On 90 degree of range (opening 60 in circumferential direction on a quarter range) covering muffler cover 58, can also install by The muffler cover 58 of 120 degree range (range of the one third in circumferential direction in opening 60) covering.

In addition, as shown in figure 9, booster with 008 cantilever support of silencer in the case where compressor case 016, with The silencer center of gravity C far from compressor case (as the center of gravity of silencer is far from the pedestal 006 of booster), be pressurized The vibration of silencer is easy to become larger when the operating of device 0100.This point, the booster silencer documented by patent document 1 In, the side wall (plectane 31 of Fig. 2 in patent document 1) of the separate compressor case in silencer to cover cylindrical shape The mode of half or so is equipped with muffler cover, and the center of gravity of muffler cover is located remotely from compressor when being mounted with muffler cover The position of shell.Therefore, the center of gravity for being equipped with the silencer of muffler cover is also easy to far from compressor case, in the fortune of booster The vibration of silencer is easy to become larger when turning.If the vibration of the silencer when operating of booster becomes larger, for example, to silencer with The mounting portion of linking part, muffler cover between compressor case applies biggish load, and existing leads to the linking part, mounting portion A possibility that damaged.

In contrast, booster shown in Fig. 4 silencer 8 (8A) and booster shown in fig. 6 silencer 8 (8B) In, therefore the muffler cover 58 for capableing of the structure of simple to install as described above is used with booster documented by patent document 1 Silencer compares, even if installation muffler cover 58, the center of gravity of silencer 8 are also difficult to far from compressor case 16.Therefore, even if Muffler cover 58 is installed, the vibration of silencer 8 is also difficult to become larger in the operating of booster 100.Thus, load is difficult to be applied to The mounting portion (bolt 62) of linking part (flange 32 and flange 34), muffler cover 58 between silencer 8 and compressor case 16, So as to inhibit the breakage of the linking part, mounting portion.

In several embodiments, for example, as shown in figure 5 and figure 7, muffler cover 58 with 30 interval d of filter Mode be set to filter 30 peripheral side.

It as a result, as indicated by arrows f1, can be by air from by the circumferential one end 58a of muffler cover 58, filter 30, convex One end side opening 52 that edge 54 and flange 56 are formed is surrounded to by muffler cover 58, filter 30, flange 54 and flange 56 Space 50 (referring to Fig. 8) import.In addition, as indicated by arrows f2, it also can be another from the circumferential direction by muffler cover 58 by air The another side opening 53 that end 58b, filter 30, flange 54 and flange 56 are formed to by muffler cover 58, filter 30, The space 50 (referring to Fig. 8) that flange 54 and flange 56 surround imports.Thus, booster silencer 8 can be entire from circumferential direction Region imports air well, therefore, as long as rightly setting the circumferential fitting limit of the muffler cover 58 in opening 60, It is able to suppress the reduction for being imported into while inhibiting total import volume of air by the air of the high temperature of the heat sources such as internal combustion engine generation.

In several embodiments, for example, as shown in figure 8, if the distance between central axis O and filter 30 are set as The distance between the outer peripheral edge of central axis O and flange 54 is set as R1 by R0, and will be between central axis O and the outer peripheral edge of flange 56 Distance be set as R2, then meet R1 > 1.1R0 and R2 > 1.1R0.

Thereby, it is possible to make the space 50 surrounded by muffler cover 58, filter 30, flange 54 and flange 56 with certain journey Degree broadens, and therefore, can carry out importing from air to space 50 F1, F2 well (referring to Fig. 5 and Fig. 7).Thus, booster is used Silencer 8 can import well air from circumferential whole region, can be improved always the leading to booster silencer 8 to air Enter the effect that the reduction of amount is inhibited.

In addition, in order to make subtracting to the import volume of booster silencer 8 for the high temperature air generated from heat sources such as internal combustion engines It is few, it is desirable to using muffler cover 58 it is circumferential to a certain degree in the range of covering opening 60, but exist with by eliminating the noise The range that device cover 58 covers becomes larger and causes the tendency of total import volume reduction of air.Therefore, muffler cover 58 also may be constructed For 60 degree of ranges more than and less than 180 degree (90 degree more than and less than 120 degree) in the circumferential direction in covering opening 60.But, The fitting limit of muffler cover 58 is not limited to above-mentioned angular range.It i.e., being capable of basis in above-mentioned booster in silencer 8 Setting environment freely selects whether install muffler cover 58 and be installed on opening 60 in the case where installing muffler cover 58 Circumferential direction on which range.

In one embodiment, in booster for example shown in Fig. 4 in silencer 8 (8A), flange 54 is in the first side wall It is arranged on 24 complete cycle, flange 56 is arranged on the complete cycle of second sidewall 26.

Thereby, it is possible to the muffler cover 58 of desired circumferential lengths is installed on to opening of being arranged in circumferential whole region The desired circumferential range of mouth 60.Thus, it is possible to only relatively high in temperature in view of the Temperature Distribution of circumferential whole region In the range of installation have circumferential lengths corresponding with the range muffler cover 58.

In one embodiment, in booster for example shown in fig. 6 in silencer 8 (8B), flange 54 is only set to first The range of a part in the circumferential direction of side wall 24, flange 56 are only set to the circumferential direction of second sidewall 26 in the mode opposite with flange 54 On a part range.

The circumferential Temperature Distribution of booster silencer 8 in the setting environment of booster 100 can increase from setting Before depressor 100 to be subject to prediction to a certain degree in the case where, as described above, only can also be respectively arranged on flange 54,56 week In the range of upward a part.In this case, it is also possible to for example, being easy in the temperature of the setting environment of booster 100 Flange 54,56 is set in relatively high circumferential range, after booster 100 is arranged, based on the circumferential direction actually measured Temperature Distribution is finely adjusted the fitting limit of the muffler cover 58 in circumferential direction.As a result, with by flange 54,56 respectively in complete cycle The case where upper setting, compares, and can simplify structure while inhibit the importing of the high temperature air generated by heat sources such as internal combustion engines.

The present invention is not limited to above-mentioned embodiments, also include applying shape made of deformation to above-mentioned embodiment State, by these forms it is appropriately combined made of form.

Symbol description

2 turbines

4 compressors

6 pedestals

7 cylinders

8 booster silencers

10 turbine rotors

12 turbine casings

14 impellers

16 compressor cases

18 rotary shafts

20 bearing arrangements

22 air induction ports

24 the first side walls

26 second sidewalls

28 muffler elements

30 filters

32 flanges

34 flanges

36 radial reinforcers

38 outside airs import space

40 plates

42 plates

44 sound-absorbing materials

46 sound-absorbing materials

48 acoustic splitters

50 spaces

52 one end side openings

53 another sides opening

54 flanges (the first flange)

54a bolt hole

56 flanges (the second flange)

56a bolt hole

58 muffler covers

58a circumferential direction one end

58b circumferential direction the other end

60 openings

62 bolts

100 boosters

Claims (8)

1. a kind of booster silencer links, which is characterized in that have with the air induction port side of compressor case:

Cricoid the first side wall, the first side wall extend around defined central axis along the direction intersected with the central axis；

Second sidewall, the second sidewall are located at the side opposite with the compressor case, and edge relative to the first side wall The extending direction of the first side wall extend, be formed between the second sidewall and the first side wall for will be external empty The outside air that gas is guided to the air induction port imports space；

Muffler element, the muffler element are set to the outside air and import space；And

Filter, the filter are set to the outer of the muffler element along the circumferentially extending that the outside air imports space Side,

The first side wall include to the peripheral side of the filter the first flange outstanding,

The second sidewall includes the peripheral side outstanding second with mode to the filter opposite with first flange Flange,

Multiple fixation holes are circumferentially with along described in first flange and second flange respectively,

It is also equipped with muffler cover, which will be in the opening that formed between first flange and second flange The range of a part in the circumferential direction covers,

The muffler cover is fixed on the fixation hole of first flange and consolidating for second flange using multiple secure components Determine hole.

2. booster silencer according to claim 1, which is characterized in that

The muffler cover is set to the peripheral side of the filter in a manner of with the filter interval.

3. booster silencer according to claim 1 or 2, which is characterized in that

If the distance between the central axis and the filter are set as R0, by the outer of the central axis and first flange The distance between periphery is set as R1, and the distance between the outer peripheral edge of the central axis and second flange is set as R2, then Meet R1 > 1.1R0 and R2 > 1.1R0.

4. booster silencer according to claim 1 or 2, which is characterized in that

First flange is arranged on the complete cycle of the first side wall,

Second flange is arranged on the complete cycle of the second sidewall.

5. booster silencer according to claim 3, which is characterized in that

First flange is arranged on the complete cycle of the first side wall,

Second flange is arranged on the complete cycle of the second sidewall.

6. booster silencer according to claim 1 or 2, which is characterized in that

First flange is only set to the range of a part in the circumferential direction in the first side wall,

Second flange is only set in the circumferential direction in the second sidewall in the mode opposite with first flange The range of a part.

7. booster silencer according to claim 3, which is characterized in that

First flange is only set to the range of a part in the circumferential direction in the first side wall,

Second flange is only set in the circumferential direction in the second sidewall in the mode opposite with first flange The range of a part.

8. a kind of booster, has:

Compressor, the compressor include compressor case；And

The air induction port side of booster silencer, the booster silencer and the compressor case links, and cantilever It is supported on the compressor case,

The booster is characterized in that,

The booster with silencer be any one of claims 1 to 7 described in booster silencer.