CN221054021U - Muffler and range hood - Google Patents
Muffler and range hood Download PDFInfo
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- CN221054021U CN221054021U CN202323172650.8U CN202323172650U CN221054021U CN 221054021 U CN221054021 U CN 221054021U CN 202323172650 U CN202323172650 U CN 202323172650U CN 221054021 U CN221054021 U CN 221054021U
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- 238000003780 insertion Methods 0.000 claims abstract description 39
- 230000037431 insertion Effects 0.000 claims abstract description 39
- 230000030279 gene silencing Effects 0.000 claims abstract description 34
- 230000003584 silencer Effects 0.000 claims abstract description 20
- 239000003517 fume Substances 0.000 claims description 54
- 239000000779 smoke Substances 0.000 claims description 45
- 230000009467 reduction Effects 0.000 abstract description 11
- 230000008859 change Effects 0.000 abstract description 4
- 230000002238 attenuated effect Effects 0.000 abstract description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 9
- 239000003546 flue gas Substances 0.000 description 9
- 238000010411 cooking Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 230000035772 mutation Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
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- Exhaust Silencers (AREA)
Abstract
The utility model relates to the technical field of kitchen equipment, and particularly discloses a silencer and a range hood, wherein the silencer comprises a silencing structure, the silencing structure comprises a silencing shell and a first insertion pipe, and the silencing shell is provided with an expansion cavity, a first opening communicated with the expansion cavity and a second opening communicated with the expansion cavity; one end of the first insertion tube is fixedly connected with the silencing shell, the other end of the first insertion tube is suspended in the expansion cavity, the first insertion tube is provided with a first through hole, one end of the first through hole is communicated with the first opening, the other end of the first through hole is communicated with the expansion cavity, the sectional area of the first section of the expansion cavity is larger than that of the first through hole, abrupt change of sectional area is generated between the expansion cavity and the first through hole, a resistant silencing structure is formed, noise can be attenuated, and the purpose of noise reduction is achieved; in addition, through setting up first insert tube for the cross-section between expansion chamber and the first through-hole is abrupt to be located the expansion intracavity portion, so can promote the amortization volume of amortization structure.
Description
Technical Field
The utility model relates to the technical field of kitchen equipment, in particular to a muffler and a range hood.
Background
At present, the noise of the range hood is mainly generated by the fan during operation, the noise of the fan during operation can be radiated through the fume collecting hood air passage, and the middle-low frequency duty ratio within 1000Hz is maximum from the working noise frequency spectrum.
In this regard, in the prior art, a silencer is disposed at the air inlet of the step of the range hood to reduce noise radiated through the fume collecting hood air passage. Specifically, the muffler includes the first air vent, expansion chamber and the second air vent of intercommunication in proper order, and the cross sectional area of at least one of first air vent and the second air vent is less than the cross sectional area of expansion chamber, and the in-process that the noise business turn over expansion chamber, the cross sectional area of cavity has changed, can form very big resistance to effectively carry out amortization and fall the noise, but the amortization volume of current muffler is limited, still has the space that further promotes.
Therefore, there is a need to design a muffler to improve the above problems.
Disclosure of utility model
The utility model aims at: a muffler and a range hood are provided to improve the sound-absorbing capacity of the muffler of the existing range hood.
In one aspect, the present utility model provides a muffler including a silencing structure, the silencing structure comprising:
The silencer comprises a silencing shell, a first opening and a second opening, wherein the silencing shell is provided with an expansion cavity, the first opening is communicated with the expansion cavity, and the second opening is communicated with the expansion cavity; and
The first insertion tube, the one end and the amortization casing fixed connection of first insertion tube, the unsettled setting of the other end of first insertion tube in expansion chamber, first insertion tube has first through-hole, the one end and the first opening intercommunication of first through-hole, the other end and the expansion chamber intercommunication of first through-hole, the cross-sectional area of the first cross-section of expansion chamber is greater than the cross-sectional area of the cross-section of first through-hole.
As the preferred technical scheme of muffler, the amortization structure still includes the second insert tube, the one end and the amortization casing fixed connection of second insert tube, the unsettled setting of the other end of second insert tube is in the expansion chamber, the second insert tube has the second through-hole, the one end and the second opening intercommunication of second through-hole, the other end and the expansion chamber intercommunication of second through-hole, the sectional area of the second cross-section of expansion chamber is greater than the sectional area of the cross-section of second through-hole, the second cross-section of expansion chamber is perpendicular to the central line of second through-hole, the cross-section of second through-hole is perpendicular to the central line of second through-hole.
As the preferred technical scheme of the silencer, the center line of the first through hole and the center line of the second through hole form an included angle; or alternatively
The center line of the first through hole is parallel to the center line of the second through hole and is positioned on the same straight line; or alternatively
The center line of the first through hole is parallel to the center line of the second through hole and is arranged at intervals.
As the preferable technical scheme of the silencer, the ratio of the sectional area of the first section of the expansion cavity to the sectional area of the first through hole is m 1, and m 1 is more than or equal to 3; and/or the number of the groups of groups,
The ratio of the sectional area of the second section of the expansion cavity to the sectional area of the second through hole is m 2, and m 2 is more than or equal to 3.
As the preferred technical scheme of muffler, the muffler includes a plurality of amortization structures, and the amortization casing of a plurality of amortization structures is connected gradually along setting for the direction.
The utility model also provides a range hood, which comprises the silencer in any scheme, the range hood further comprises a range hood body and a fan, the range hood body is provided with a smoke channel and a smoke inlet communicated with the smoke channel, the fan is provided with an air inlet, a fan air channel communicated with the air inlet and a smoke outlet communicated with the fan air channel, the air inlet is communicated with the smoke channel, the silencer is arranged in the smoke channel, and the first opening is communicated with the smoke channel.
As the preferable technical scheme of the range hood, the range hood body comprises a main case and a fume collecting hood, the fume channel comprises a fume collecting hood air flue arranged on the fume collecting hood and a main case air flue arranged on the main case, the fume collecting hood air flue is communicated with the main case air flue, the fume inlet is arranged on the fume collecting hood, and the fume inlet is communicated with the fume collecting hood air flue;
the fan sets up in the mainframe box, and air intake and mainframe box air flue intercommunication, and the muffler sets up in collection petticoat pipe air flue, and first opening and collection petticoat pipe air flue intercommunication.
As a preferred technical scheme of the range hood, the fume collecting hood comprises a first side wall and a second side wall which are parallel and are arranged at intervals;
The first opening faces the first side wall, the first opening is arranged at intervals from the first side wall, and the second opening faces the second side wall;
the second opening is spaced apart from the second sidewall or the second opening is shielded by the second sidewall.
As the preferable technical proposal of the range hood, the first opening is communicated with the fume collecting hood air passage, and the second opening is communicated with the fume inlet; or alternatively
The muffler separates the fume collecting hood air flue into a first air flue and a second air flue, the first air flue is communicated with the main machine box air flue, the fume inlet is communicated with the second air flue, the first opening is communicated with the first air flue, and the second opening is communicated with the second air flue.
As the preferable technical scheme of the range hood, the cross section of the fume collecting hood air channel is larger than the cross section of the first opening, and the cross section of the fume collecting hood air channel is vertical to the central line of the first opening.
The silencer provided by the utility model has at least the following beneficial effects:
The muffler comprises a silencing structure, wherein the silencing structure comprises a silencing shell and a first insertion pipe, and the silencing shell is provided with an expansion cavity, a first opening communicated with the expansion cavity and a second opening communicated with the expansion cavity; one end of the first insertion tube is fixedly connected with the silencing shell, the other end of the first insertion tube is suspended in the expansion cavity, the first insertion tube is provided with a first through hole, one end of the first through hole is communicated with the first opening, the other end of the first through hole is communicated with the expansion cavity, the cross section area of the first cross section of the expansion cavity is larger than that of the first through hole, and the cross section area of the first cross section of the expansion cavity is set to be larger than that of the first through hole, so that abrupt change of cross section area is generated between the expansion cavity and the first through hole, a resistant silencing structure is formed, noise can be attenuated, and the purpose of noise reduction is achieved; meanwhile, by arranging the first insertion tube, the abrupt change of the cross section between the expansion cavity and the first through hole is positioned in the expansion cavity, so that the volume of the silencing structure can be increased.
The range hood provided by the utility model has at least the following beneficial effects:
The range hood comprises a range hood body, a fan and the silencer, wherein the range hood body is provided with a smoke channel and a smoke inlet communicated with the smoke channel, and the smoke inlet is used for collecting cooking fume generated by cooking. The fan is provided with the air intake, with the fan air flue of air intake intercommunication to and the exhaust port of air flue intercommunication, air intake and flue gas passageway intercommunication, the muffler sets up in flue gas passageway, and first opening and flue gas passageway intercommunication, through set up the muffler in flue gas passageway, partial sound wave can pass through the first opening and the first through-hole of amortization structure and transmit to the expansion chamber, and then accessible amortization structure carries out noise reduction to the sound wave and handles, can effectively reduce the noise in radiating to the kitchen from the air collecting port, and then promotes user experience.
Drawings
FIG. 1 is a schematic view of a muffler according to an embodiment of the present utility model;
FIG. 2 is a front view of a muffler according to an embodiment of the present utility model;
FIG. 3 is a cross-sectional view of the muffler of FIG. 2 taken along the direction A-A;
FIG. 4 is a cross-sectional view of the muffler of FIG. 2 taken along the B-B direction;
FIG. 5 is an enlarged view of FIG. 3 at C;
FIG. 6 is a cross-sectional view of a sound attenuating structure in accordance with an embodiment of the present utility model;
Fig. 7 is a schematic structural diagram of a range hood according to an embodiment of the present utility model.
In the figure:
10. A muffler; 20. a smoke machine body; 30. a blower; 40. a flue gas channel; 50. a smoke inlet;
1. A sound deadening structure;
11. A sound deadening housing; 111. a first opening; 112. a second opening; 113. expanding the cavity;
12. A first insertion tube; 121. A first through hole;
13. a second insertion tube; 131. a second through hole;
2. a mounting plate;
201. A main chassis; 202. a fume collecting hood; 2021. a first sidewall; 2022. a second sidewall;
301. an air inlet; 302. a fan air passage; 303. a smoke outlet;
401. a fume collecting hood air passage; 402. and an air passage of the main machine box.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first location" and "second location" are two distinct locations and wherein the first feature is "above," "over" and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is level above the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
The current muffler is including the first air vent, expansion chamber and the second air vent that communicate in proper order, and at least one cross sectional area in first air vent and the second air vent is less than the cross sectional area in expansion chamber, and the in-process that the noise business turn over expansion chamber, the cross sectional area of cavity has changed, can form very big resistance to carry out the amortization effectively and fall the noise, but the amortization volume of current muffler is limited, still has the space that further promotes.
In view of this, referring to fig. 1 to 5, the present embodiment provides a muffler 10 including a muffler structure 1, the muffler structure 1 including a muffler shell 11 and a first insertion tube 12. Wherein the sound-deadening housing 11 is provided with an expansion chamber 113, a first opening 111 communicating with the expansion chamber 113, and a second opening 112 communicating with the expansion chamber 113; one end of the first insertion tube 12 is fixedly connected with the silencing shell 11, the other end of the first insertion tube 12 is suspended in the expansion cavity 113, the first insertion tube 12 is provided with a first through hole 121, one end of the first through hole 121 is communicated with the first opening 111, the other end of the first through hole 121 is communicated with the expansion cavity 113, and the sectional area of the first section of the expansion cavity 113 is larger than that of the section of the first through hole 121.
In the silencer 10 provided in this embodiment, on one hand, the sectional area of the first section of the expansion cavity 113 is set to be larger than the sectional area of the section of the first through hole 121, so that a sectional area mutation is generated between the expansion cavity 113 and the first through hole 121, and a resistive silencing structure is formed, which can cause impedance mismatch of the acoustic propagation channel, so that acoustic waves with certain frequencies are reflected, interfered, counteracted and the like when passing through the sectional area mutation, and noise is further attenuated, thereby realizing a noise reduction effect; on the other hand, by providing the first insertion tube 12 such that the abrupt change in cross section between the expansion chamber 113 and the first through hole 121 is located inside the expansion chamber 113, the sound deadening quantity of the sound deadening structure 1 can be raised. Specifically, in the present embodiment, the length of the first insertion tube 12, the frequency of noise and the amount of noise reduction have a correspondence relationship in which the amount of noise reduction of the noise reduction structure 1 is significantly improved at least in certain frequency ranges when the length of the first insertion tube 12 is greater than zero, compared to when the length of the first insertion tube 12 is equal to zero.
In this embodiment, the first section of the expansion chamber 113 is perpendicular to the center line of the first through hole 121, and the section of the first through hole 121 is perpendicular to the center line of the first through hole 121.
As shown in fig. 1, 4 and 5, in the present embodiment, the expansion chamber 113 has a cubic structure, the depth direction of the expansion chamber 113 is in the direction indicated by the arrow ab in fig. 1, the length direction of the expansion chamber 113 is in the direction indicated by the arrow cd in fig. 1, the width direction of the expansion chamber 113 is in the direction indicated by the arrow ef in fig. 1, and the depth direction of the expansion chamber 113, the length direction of the expansion chamber 113 and the width direction of the expansion chamber 113 are perpendicular to each other. The first insertion tube 12 is inserted into the expansion cavity 113 along the depth direction of the expansion cavity 113, the length H 1 of the first insertion tube 12, and the depth of the expansion cavity 113 is H, wherein H 1 is less than H. The values of H 1 and H can be set according to actual needs.
In the present embodiment, the cross section of the first through hole 121 is rectangular, the length direction of the cross section of the first through hole 121 is along the cd direction, and the width direction of the cross section of the first through hole 121 is along the ef direction. The length of the cross section of the first through hole 121 is L 1, the width of the cross section of the first through hole 121 is W 1, and the cross section of the first through hole 121 is S 1,S1＝L1*W1. The first section of the expansion chamber 113 is also rectangular, and the length direction of the first section of the expansion chamber 113 is along the cd direction, and the width direction of the first section of the expansion chamber 113 is along the ef direction. The length of the first section of the expansion chamber 113 is L 2, the width of the first section of the expansion chamber 113 is W 2, and the sectional area of the first section of the expansion chamber 113 is S 2,S2＝L2*W2.S2＞S1. The value of L 1、W1、L2、W2 may be set according to the actual requirement.
In addition, the ratio of the cross-sectional area S 2 of the first section of the expansion chamber 113 to the cross-sectional area S 1 of the section of the first through hole 121 is m 1, that is, m 1＝S2/S1.m1 is the first expansion ratio, wherein in this embodiment, m 1 is equal to or greater than 3. By this arrangement, the silencing structure 1 can be ensured to have a high silencing volume.
Wherein m 1 may be set to 3、3.05、3.1、3.15、3.2、3.25、3.3、3.35、3.4、3.45、3.5、3.55、3.6、3.65、3.7、3.75、3.8、3.85、3.9、3.95、4、4.05、4.1、4.15、4.2、4.25、4.3、4.35、4.4、4.45、4.5、4.55、4.6、4.65、4.7、4.75、4.8、4.85、4.9、4.95 or 5. In other embodiments, m 1 may be set to other values as desired.
Referring to fig. 2 to 5, the silencing structure 1 further includes a second insertion tube 13, one end of the second insertion tube 13 is fixedly connected with the silencing shell 11, the other end of the second insertion tube 13 is suspended in the expansion cavity 113, the second insertion tube 13 has a second through hole 131, one end of the second through hole 131 is communicated with the second opening 112, the other end of the second through hole 131 is communicated with the expansion cavity 113, a cross-sectional area of a second cross section of the expansion cavity 113 is larger than a cross-sectional area of a cross section of the second through hole 131, the second cross section of the expansion cavity 113 is perpendicular to a center line of the second through hole 131, and the cross section of the second through hole 131 is perpendicular to the center line of the second through hole 131. By the arrangement, sectional area mutation can be generated between the expansion cavity 113 and the second through hole 131, and a resistance silencing structure is formed, so that noise can be reduced through sound waves, and the noise reduction effect of the silencing structure 1 can be further improved.
As shown in fig. 1, 4 and 5, in the present embodiment, the center line of the first through hole 121 is parallel to and in the same line with the center line of the second through hole 131, the second insertion tube 13 is inserted into the expansion chamber 113 along the depth direction of the expansion chamber 113, and the length H 2,h2 of the second insertion tube 13 is less than H. The value of h 2 can be set according to actual requirements.
As an alternative, as shown in fig. 6D 1 and D2, the center line of the first through hole 121 and the center line of the second through hole 131 may be disposed at an angle, or as shown in fig. 6D 3, the center line of the first through hole 121 and the center line of the second through hole 131 may be disposed in parallel and spaced apart. By the arrangement, the center line of the first through hole 121 and the center line of the second through hole 131 are not on the same straight line, when noise enters the expansion cavity 113 from one of the first through hole 121 and the second through hole 131, the noise can be separated from the expansion cavity 113 from the other of the first through hole 121 and the second through hole 131 only through a plurality of reflections in the expansion cavity 113, and the noise reflection times can also play a role in silencing and noise reduction.
Referring to fig. 4 and 5, in the present embodiment, the cross section of the second through hole 131 is also rectangular, the length direction of the cross section of the second through hole 131 is along the cd direction, and the width direction of the cross section of the second through hole 131 is along the ef direction. The length of the cross section of the second through hole 131 is L 3, the width of the cross section of the second through hole 131 is W 3, and the cross section of the second through hole 131 is S 3,S3＝L3*W3. The value of L 3、W3 may be set according to the actual requirement. The second cross-section of the expansion chamber 113 has a cross-sectional area S 4. Illustratively, in the present embodiment, the second cross-section of the expansion chamber 113 is the same shape and the same area as the first cross-section of the expansion chamber 113, and therefore, the cross-sectional area S 4 of the second cross-section of the expansion chamber 113 is the same as the cross-sectional area S 2 of the first cross-section of the expansion chamber 113, that is, S 4＝S2. Of course, in other embodiments, the cross-sectional area S 4 of the second cross-section of the expansion chamber 113 may be set to be different from the cross-sectional area S 2 of the first cross-section of the expansion chamber 113, as desired.
In addition, the ratio of the cross-sectional area S 4 of the second section of the expansion chamber 113 to the cross-sectional area S 3 of the section of the second through hole 131 is m 2, that is, m 2＝S4/S3.m2 is the second expansion ratio, wherein in this embodiment, m 2 is equal to or greater than 3. By this arrangement, the silencing structure 1 can be ensured to have a high silencing volume.
Wherein m 2 may be set to 3、3.05、3.1、3.15、3.2、3.25、3.3、3.35、3.4、3.45、3.5、3.55、3.6、3.65、3.7、3.75、3.8、3.85、3.9、3.95、4、4.05、4.1、4.15、4.2、4.25、4.3、4.35、4.4、4.45、4.5、4.55、4.6、4.65、4.7、4.75、4.8、4.85、4.9、4.95 or 5. In other embodiments, m 2 may be set to other values as desired.
It should be noted that, in other embodiments, the first expansion ratio m 1 and the second expansion ratio m 2 may also be set such that only one of them has a value of 3 or more, and the other is not limited.
Referring to fig. 1 to 4, in the present embodiment, the muffler 10 includes a plurality of muffler structures 1, and muffler shells 11 of the plurality of muffler structures 1 are sequentially connected along a set direction. With this arrangement, the overall silencing ability of the silencer 10 can be further enhanced. In addition, the silencing cases 11 of the silencing structures 1 may be integrally provided, and the overall structural strength of the silencer 10 may be enhanced. In other embodiments, the silencing structures 1 may be arranged in M rows and N columns, where M and N are positive integers not less than 2.
Muffler 10 also includes a mounting plate 2 coupled to muffler housing 11, mounting plate 2 being used to secure muffler 10 to other devices requiring muffler.
The embodiment also provides a range hood. The range hood can be arranged in a kitchen and is used for collecting and discharging cooking fume generated by cooking. The side-suction type range hood is specifically taken as an example for illustration. In other embodiments, the range hood may also be a top-mounted range hood, or other type of range hood.
Referring to fig. 4 and 7, the range hood includes a hood body 20, a fan 30, and the muffler 10. The smoke machine body 20 is provided with a smoke channel 40 and a smoke inlet 50 communicated with the smoke channel 40, wherein the smoke inlet 50 is used for collecting cooking fume. The fan 30 is provided with an air inlet 301, an air passage of the fan 30 communicated with the air inlet 301, and a smoke outlet 303 communicated with the air passage of the fan 30, the air inlet 301 is communicated with the smoke passage 40, the smoke outlet 303 is used for connecting an exhaust pipe (not shown in the drawing), the muffler 10 is arranged on the smoke passage 40, and the first opening 111 is communicated with the smoke passage 40. When fan 30 during operation, the noise that fan 30 produced can transmit to flue gas passageway 40 to continue to follow and advance in the mouth 50 of cigarette and go out the radiation to the kitchen, through set up muffler 10 in flue gas passageway 40, partial sound wave can pass through the first opening 111 and the first through-hole 121 of amortization structure 1 and transmit to expansion chamber 113, and then accessible amortization structure 1 carries out the noise reduction to the sound wave and handles, can effectively reduce the noise of following the mouth 50 of cigarette and radiating to the kitchen in, and then promote user experience.
With continued reference to fig. 4 and 7, in the present embodiment, the smoke machine body 20 includes a main case 201 and a smoke collecting hood 202, the smoke channel 40 includes a smoke collecting hood air flue 401 disposed on the smoke collecting hood 202, and a main case air flue 402 disposed on the main case 201, the smoke collecting hood air flue 401 is communicated with the main case air flue 402, the smoke inlet 50 is disposed on the smoke collecting hood 202, and the smoke inlet 50 is communicated with the smoke collecting hood air flue 401; the fan 30 is arranged in the main case 201, the air inlet 301 is communicated with the air passage 402 of the main case, the silencer 10 is arranged in the air passage 401 of the fume collecting hood, and the first opening 111 is communicated with the air passage 401 of the fume collecting hood. So configured, the blower 30 may be installed through the main cabinet 201, the fume may be collected through the fume collecting hood 202, and the muffler 10 may be installed through the cavity wall of the fume collecting hood air duct 401. After the noise generated by the operation of the fan 30 is transferred to the fume collecting hood air duct 401, a part of the noise can be eliminated through the silencer 10, so that the noise transferred to the kitchen is reduced. In other embodiments, muffler 10 may also be disposed in main housing air duct 402, or where main housing air duct 402 communicates with hood air duct 401.
In addition, in this embodiment, the cross-sectional area of the fume collecting hood air duct 401 is larger than the cross-sectional area of the first opening 111, and the cross-section of the fume collecting hood air duct 401 is perpendicular to the center line of the first opening 111. So set up, produce the sectional area between collection petticoat pipe air flue 401 and the first opening 111 and break up to form expansion amortization structure, when noise from collection petticoat pipe air flue 401 entering first opening 111, also can produce the noise reduction effect.
With continued reference to fig. 4 and 7, in the present embodiment, the fume collecting hood 202 includes a first sidewall 2021 and a second sidewall 2022 disposed in parallel and spaced apart from each other, the first opening 111 faces the first sidewall 2021, the first opening 111 is spaced apart from the first sidewall 2021, the second opening 112 faces the second sidewall 2022, and the second opening 112 is shielded by the second sidewall 2022. So set up, noise accessible first opening 111 and first through-hole 121 transmit to expansion intracavity 113 in collection petticoat pipe air flue 401 to carry out the amortization through expansion amortization structure, simultaneously, still can avoid transmitting the noise in the expansion chamber 113 and return collection petticoat pipe air flue 401 through the second opening 112, in addition, muffler 10 does not cut off collection smoke passage, can not increase the resistance of discharging fume, and then can not influence the flow of flue gas in collection petticoat pipe 202 passageway.
As an alternative thereto, the fume collecting hood 202 comprises a first side wall 2021 and a second side wall 2022 arranged in parallel and spaced apart, the first opening 111 is directed towards the first side wall 2021, the first opening 111 is spaced apart from the first side wall 2021, the second opening 112 is directed towards the second side wall 2022, and the second opening 112 is spaced apart from the second side wall 2022. So set up, noise can pass through first opening 111 and first through-hole 121 simultaneously in collection petticoat pipe air flue 401 and transmit to expansion chamber 113 in, still accessible second opening 112 and second through-hole 131 transmit to expansion chamber 113 in to both modes accessible expansion amortization structure carries out amortization, can effectively increase the amortization effect, and simultaneously, muffler 10 does not cut off collection smoke passage, can not increase the resistance of discharging fume, and then can not influence the flow of flue gas in collection petticoat pipe 202 passageway.
As an alternative thereto, the first opening 111 communicates with the fume collection hood air duct 401 and the second opening 112 communicates with the fume inlet 50. So set up, the noise will all get into expansion chamber 113 through the first opening 111 and the first through-hole 121 of each amortization structure 1 at album smoke chamber air flue to amortize through expansion amortization structure, so noise in the kitchen that can furthest reduce and transmit.
As an alternative, muffler 10 divides fume collection hood air duct 401 into a first air duct and a second air duct, the first air duct communicates with main cabinet air duct 402, fume inlet 50 communicates with the second air duct, first opening 111 communicates with the first air duct, and second opening 112 communicates with the second air duct. So set up, the noise can all get into expansion chamber 113 through the first opening 111 and the first through-hole 121 of each amortization structure 1 equally at collection smoke chamber air flue to carry out the amortization through the expansion amortization structure, so can the furthest noise that reduces and transmit to in the kitchen.
It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.
Claims (10)
1. A muffler, characterized in that the muffler (10) comprises a sound attenuating structure (1), the sound attenuating structure (1) comprising:
-a sound-deadening housing (11), the sound-deadening housing (11) being provided with an expansion chamber (113), a first opening (111) communicating with the expansion chamber (113), and a second opening (112) communicating with the expansion chamber (113); and
The silencer comprises a first insertion tube (12), wherein one end of the first insertion tube (12) is fixedly connected with the silencer casing (11), the other end of the first insertion tube (12) is suspended in the expansion cavity (113), the first insertion tube (12) is provided with a first through hole (121), one end of the first through hole (121) is communicated with the first opening (111), the other end of the first through hole (121) is communicated with the expansion cavity (113), and the sectional area of a first section of the expansion cavity (113) is larger than that of a section of the first through hole (121).
2. The silencer according to claim 1, wherein the silencing structure (1) further comprises a second insertion tube (13), one end of the second insertion tube (13) is fixedly connected with the silencing shell (11), the other end of the second insertion tube (13) is suspended in the expansion cavity (113), the second insertion tube (13) is provided with a second through hole (131), one end of the second through hole (131) is communicated with the second opening (112), the other end of the second through hole (131) is communicated with the expansion cavity (113), the cross section of a second cross section of the expansion cavity (113) is larger than that of the second through hole (131), the second cross section of the expansion cavity (113) is perpendicular to the center line of the second through hole (131), and the cross section of the second through hole (131) is perpendicular to the center line of the second through hole (131).
3. The muffler as claimed in claim 2, characterized in that the center line of the first through hole (121) is disposed at an angle to the center line of the second through hole (131); or alternatively
The center line of the first through hole (121) is parallel to the center line of the second through hole (131) and is positioned on the same straight line; or alternatively
The center line of the first through hole (121) is parallel to and spaced from the center line of the second through hole (131).
4. The muffler as claimed in claim 2, wherein a ratio of a cross-sectional area of the first cross-section of the expansion chamber (113) to a cross-sectional area of the first through hole (121) is m 1, and m 1 is equal to or greater than 3; and/or the number of the groups of groups,
The ratio of the sectional area of the second section of the expansion cavity (113) to the sectional area of the second through hole (131) is m 2, and m 2 is more than or equal to 3.
5. A muffler according to any one of claims 1-4, characterized in that the muffler (10) comprises several muffler structures (1), the muffler shells (11) of several muffler structures (1) being connected in sequence in a set direction.
6. A range hood, characterized by comprising the silencer of any one of claims 1-5, further comprising a range hood body (20) and a fan (30), wherein the range hood body (20) is provided with a smoke channel (40), and a smoke inlet (50) communicated with the smoke channel (40), the fan (30) is provided with an air inlet (301), an air channel of the fan (30) communicated with the air inlet (301), and a smoke outlet (303) communicated with the air channel of the fan (30), the air inlet (301) is communicated with the smoke channel (40), and the silencer (10) is arranged in the smoke channel (40), and the first opening (111) is communicated with the smoke channel (40).
7. The range hood according to claim 6, wherein the hood body (20) comprises a main chassis (201) and a fume collecting hood (202), the fume channel (40) comprises a fume collecting hood air channel (401) arranged on the fume collecting hood (202), and a main chassis air channel (402) arranged on the main chassis (201), the fume collecting hood air channel (401) is communicated with the main chassis air channel (402), the fume inlet (50) is arranged on the fume collecting hood (202), and the fume inlet (50) is communicated with the fume collecting hood air channel (401);
the fan (30) set up in mainframe (201), air intake (301) with mainframe air flue (402) intercommunication, muffler (10) set up in collection petticoat pipe air flue (401), first opening (111) with collection petticoat pipe air flue (401) intercommunication.
8. The range hood according to claim 7, wherein the fume collection hood (202) comprises a first side wall (2021) and a second side wall (2022) arranged in parallel and spaced apart relation;
The first opening (111) faces the first side wall (2021), the first opening (111) is arranged at a distance from the first side wall (2021), and the second opening (112) faces the second side wall (2022);
The second opening (112) is spaced apart from the second sidewall (2022), or the second opening (112) is shielded by the second sidewall (2022).
9. The range hood according to claim 7, wherein the first opening (111) communicates with the fume collection hood air duct (401) and the second opening (112) communicates with the fume inlet (50); or alternatively
The muffler (10) divides the fume collecting hood air passage (401) into a first air passage and a second air passage, the first air passage is communicated with the main cabinet air passage (402), the fume inlet (50) is communicated with the second air passage, the first opening (111) is communicated with the first air passage, and the second opening (112) is communicated with the second air passage.
10. A range hood according to claim 8 or 9, wherein the cross-sectional area of the fume collection hood air duct (401) is larger than the cross-sectional area of the first opening (111), the cross-section of the hood air duct being perpendicular to the centre line of the first opening (111).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323172650.8U CN221054021U (en) | 2023-11-23 | 2023-11-23 | Muffler and range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323172650.8U CN221054021U (en) | 2023-11-23 | 2023-11-23 | Muffler and range hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221054021U true CN221054021U (en) | 2024-05-31 |
Family
ID=91201955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323172650.8U Active CN221054021U (en) | 2023-11-23 | 2023-11-23 | Muffler and range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221054021U (en) |
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2023
- 2023-11-23 CN CN202323172650.8U patent/CN221054021U/en active Active
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