CN217381047U - Noise reduction structure - Google Patents

Abstract

The application relates to the technical field of dust collectors, in particular to a noise reduction structure, which comprises an air suction hood, an air exhaust shell and a fan; the air exhaust shell is hollow, and the air suction cover is arranged at the opening of the air exhaust shell; a bending part is arranged inside the air exhaust shell; a bent air duct is formed between the outer wall of the bent piece and the inner wall of the exhaust shell; the tail end of the bent air duct is provided with an air outlet on the outer wall of the air exhaust shell; the air suction cover is provided with a surrounding part corresponding to the bending part; the fan is arranged on the inner wall of the exhaust shell and is positioned between the inner cavity of the bending piece and the inner cavity of the surrounding piece. This application not only is favorable to guiding the air concentration in the cover that induced drafts through the setting of surround to assemble smoothly in the inlet scoop of fan, can act as the cage of the inlet scoop department of fan, is favorable to keeping apart the noise that the fan produced when induced drafting, but also through the crooked wind channel that the crooked spare and form between the casing of airing exhaust, is favorable to increasing the length in wind channel of airing exhaust, slows down the noise that wind-force strikes and causes, plays the effect of making an uproar of falling.

Description

Noise reduction structure

Technical Field

The application relates to the technical field of dust collectors, in particular to a noise reduction structure.

Background

The dust collector mainly sucks air containing dust and sundries into the filter cup for filtering treatment, and then discharges the filtered air to the outside of the body, thereby realizing the cleaning effect. However, the existing dust collector can generate larger noise when exhausting air, and the use experience of a user is directly influenced.

SUMMERY OF THE UTILITY MODEL

In view of this, the present application aims to provide a noise reduction structure, which is used for solving the technical problem of large exhaust noise in the prior art.

In order to achieve the purpose, the application provides the following technical scheme:

a noise reduction structure comprises an air suction hood, an air exhaust shell and a fan;

the air exhaust shell is hollow, and the air suction cover is arranged at the opening of the air exhaust shell;

a bending piece is arranged inside the exhaust shell;

a bent air duct is formed between the outer wall of the bent piece and the inner wall of the exhaust shell;

the tail end of the bent air duct is provided with an air outlet on the outer wall of the air exhaust shell;

the air suction cover is provided with a surrounding piece corresponding to the bending piece;

the fan is arranged on the inner wall of the exhaust shell and is positioned between the inner cavity of the bending piece and the inner cavity of the surrounding piece.

Preferably, in the above noise reduction structure, a sealing ring is provided inside the enclosure;

the air outlet of the air suction cover is connected with the air suction port of the fan in a sealing manner through the sealing ring.

Preferably, in the above noise reduction structure, the outer wall of the exhaust casing is provided with a first connecting piece, and the outer wall of the air suction hood is provided with a second connecting piece;

the first connecting piece and the second connecting piece are provided with corresponding connecting holes.

Preferably, in the noise reduction structure, an outer wall of the exhaust casing is recessed inwards to form a mounting position of the first connector.

Preferably, in the above noise reduction structure, a first positioning assembly is disposed between the air suction hood and the air exhaust casing.

Preferably, in the above noise reduction structure, a connection between the air suction hood and the air exhaust casing is connected by a sealing structure.

Preferably, in the above noise reduction structure, the sealing structure includes a first sealing ring, a second sealing ring and a third sealing ring;

the first sealing ring is arranged inside the second sealing ring;

and a sealing groove matched with the third sealing ring is formed between the outer wall of the first sealing ring and the inner wall of the second sealing ring.

Preferably, in the above noise reduction structure, a plug-in assembly is disposed between the fan and the inner wall of the exhaust casing.

Preferably, in the noise reduction structure, a filter cup is further included;

the filter cup is connected with the air inlet of the air suction cover in a sealing way.

Preferably, in the above noise reduction structure, a second positioning assembly is disposed between the air suction hood and the filter cup.

Compared with the prior art, the beneficial effect of this application is:

the application provides a structure of making an uproar falls, on the one hand set up through the surrounding part be favorable to guiding the air concentration in the cover that induced drafts to assemble smoothly in the inlet scoop of fan, can act as the cage of the inlet scoop department of fan, be favorable to keeping apart the noise that the fan produced when induced drafting, on the other hand passes through the crooked wind channel that forms between the outer wall of crooked piece and the inner wall of the casing of airing exhaust, be favorable to increasing the length in wind channel of airing exhaust, slow down the noise that wind-force strikes and cause, play the effect of making an uproar.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a cross-sectional view of a noise reducing structure according to an embodiment of the present disclosure;

fig. 2 is a schematic wind direction diagram of a curved wind channel of a noise reduction structure according to an embodiment of the present disclosure;

fig. 3 is a disassembled schematic view of a noise reduction structure provided in the embodiment of the present application;

fig. 4 is a schematic view illustrating a connection between an air suction hood and a filter cup of a noise reduction structure according to an embodiment of the present application.

In the figure:

100. an air suction hood; 110. an enclosure; 120. a seal ring; 200. an air exhaust housing; 210. a bending member; 220. a curved duct; 230. an air outlet; 240. mounting positions; 250. a plug-in assembly; 260. a spacer; 300. a fan; 410. a first connecting member; 420. a second connecting member; 510. a first positioning assembly; 520. a second positioning assembly; 610. a first seal ring; 620. a second seal ring; 630. a third seal ring; 700. and (4) a filter cup.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected" and "connected" should be interpreted broadly, and may be, for example, a fixed connection, an exchangeable connection, an integrated connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 to 4, an embodiment of the present application provides a noise reduction structure, which includes an air suction hood 100, an air exhaust casing 200, and a fan 300; the inside of the air exhaust shell 200 is hollow, and the air suction hood 100 is covered at the opening of the air exhaust shell 200; the inside of the exhaust case 200 is provided with a bending member 210; a curved air duct 220 is formed between the outer wall of the curved member 210 and the inner wall of the exhaust casing 200; an air outlet 230 is arranged on the outer wall of the air exhaust shell 200 at the tail end of the curved air duct 220; the suction hood 100 is covered with a surrounding member 110 corresponding to the bending member 210; the fan 300 is mounted on the inner wall of the exhaust housing 200 between the inner cavity of the curved member 210 and the inner cavity of the enclosure 110.

More specifically, referring to fig. 2, an arrow in the figure is a flow direction of the air in the curved air duct 220, the curved member 210 is disposed on the inner end surface of the exhaust casing 200, the curved air duct 220 is formed between the curved member 210 and the inner side wall of the exhaust casing 200, and the curved air duct 220 is preferably disposed around the fan 300; a spacing part 260 parallel to the inner end surface of the air exhaust shell 200 is arranged at the position, close to the air outlet 230, of the air exhaust shell 200, the spacing part 260 is connected with the bending part 210 and the inner side wall of the air exhaust shell 200, the spacing part 260 can prevent the opening of the bending part 210 from being directly communicated with the air outlet 230, the air exhausted by the fan 300 can be smoothly exhausted from the air outlet 230 along the bent air duct 220, and the length of the air exhaust air duct can be prolonged; the enclosure 110 is preferably in the form of a cylinder disposed around the fan 300.

This embodiment is favorable to guiding the gas concentration in the suction hood 100 through setting up of surrounding part 110 on the one hand and assembles smoothly in the inlet scoop of fan 300, can act as the cage of the inlet scoop department of fan 300, be favorable to keeping apart the noise that fan 300 produced when induced drafting, on the other hand passes through the crooked wind channel 220 that forms between the outer wall of curved member 210 and the inner wall of the casing 200 of airing exhaust, be favorable to increasing the length in wind channel of airing exhaust, slow down the noise that wind-force strikes and cause, play the effect of making an uproar.

Further, in the present embodiment, referring to fig. 1, a sealing ring 120 is disposed inside the surrounding element 110; the air outlet of the air suction hood 100 is hermetically connected with the air suction inlet of the fan 300 through a sealing ring 120. The sealing ring 120 can enhance the sealing performance between the air outlet of the air suction hood 100 and the air suction opening of the fan 300, thereby avoiding the gas leakage between the air suction hood 100 and the fan 300 and also being beneficial to avoiding the noise generated during the gas leakage.

More specifically, a through hole for communicating the air outlet of the air suction hood 100 with the air suction opening of the fan 300 is formed in the middle of the sealing ring 120, the sealing ring 120 can be arranged on the air suction opening of the fan 300 in a covering manner, the sealing ring 120 is in grounding contact with the inner wall of the air suction hood 100, and the specific shape of the sealing ring 120 is designed according to the specific shape of the fan 300; in addition, the outer circumferential wall of the sealing ring 120 may contact and abut against the inner circumferential wall of the surrounding member 110, which is beneficial to ensuring the stability of the fixation of the sealing ring 120.

Further, in the present embodiment, the outer wall of the exhaust casing 200 is provided with a first connecting member 410, and the outer wall of the air suction hood 100 is provided with a second connecting member 420; the first and second connection members 410 and 420 are provided with corresponding connection holes. The arrangement can not only utilize the fastener to pass through the connecting hole of the first connecting piece 410 and the connecting hole of the second connecting piece 420 to accurately fix the exhaust casing 200 and the air suction cover 100 together, but also can be provided with the third connecting piece corresponding to the first connecting piece 410, so that the exhaust casing 200 and the air suction cover 100 can be fixedly arranged in the motor box body, the detachability between the air suction cover 100 and the exhaust casing 200 is also ensured, and the subsequent disassembly and maintenance are convenient.

More specifically, referring to fig. 3, the first connecting member 410 is a connecting column disposed on the exhaust casing 200, the second connecting member 420 is a connecting column disposed on the exhaust hood 100, and the first connecting member 410 and the second connecting member 420 have corresponding connecting holes along the central line; the number of the first connectors 410 and the second connectors 420 is not limited to one set, and more than three sets of the first connectors 410 and the second connectors 420 are preferably used.

Further, in the present embodiment, the outer wall of the discharge casing 200 is recessed inward to form the mounting position 240 of the first connector 410. The mounting position 240 formed by the recess can enable the first connecting piece 410 to be compactly mounted on the outer wall of the exhaust casing 200, which is beneficial to saving space, and can vacate the position combined with the motor box, which is convenient for the exhaust casing 200 to be mounted inside the motor box.

More specifically, referring to fig. 3, the mounting locations 240 are embodied as grooves provided on the outer circumferential wall of the exhaust casing 200; referring to fig. 2, the installation position 240 may make the curved air channel 220 narrower, which is also beneficial to prolong the staying time of air in the curved air channel 220, and further reduce noise caused by wind impact; the second connector 420 is also mounted in a recess formed in the outer peripheral wall of the suction hood 100.

Further, in the present embodiment, a first positioning component 510 is disposed between the air suction hood 100 and the air exhaust casing 200. When the exhaust housing 200 is fixedly connected with the air suction hood 100, the connecting hole of the first connecting piece 410 and the connecting hole of the second connecting piece 420 are required to be in the same straight line, and the air suction hood 100 and the exhaust housing 200 can be preliminarily fixed through the first positioning assembly 510, so that the connecting hole of the first connecting piece 410 is aligned with the connecting hole of the second connecting piece 420, and thus, an operator can conveniently install a fastener between the first connecting piece 410 and the second connecting piece 420.

More specifically, referring to fig. 3, the first positioning component 510 may adopt a positioning and matching manner of a fastening groove and a fastening member, and preferably two groups of fastening grooves and fastening members are adopted, and of course, the first positioning component 510 may also adopt other positioning structures as long as the requirement of realizing the positioning effect between the air intake cover 100 and the exhaust casing 200 can be met.

Further, in the present embodiment, the connection between the suction hood 100 and the exhaust housing 200 is connected by a sealing structure. The sealing structure can prevent the gas leakage at the joint between the suction hood 100 and the exhaust casing 200, ensure that the gas can smoothly flow from the suction hood 100 to the fan 300, and then be discharged through the exhaust outlet 230 along the curved air duct 220.

Further, in the present embodiment, the sealing structure includes a first sealing ring 610, a second sealing ring 620, and a third sealing ring 630; the first seal ring 610 is disposed inside the second seal ring 620; a sealing groove matched with the third sealing ring 630 is formed between the outer wall of the first sealing ring 610 and the inner wall of the second sealing ring 620. The sealing groove formed by the first sealing ring 610 and the second sealing ring 620 can simultaneously seal the inner wall and the outer wall of the third sealing ring 630, thereby greatly improving the sealing performance between the air suction cover 100 and the exhaust casing 200 and being beneficial to preventing the gas leakage at the joint between the air suction cover 100 and the exhaust casing 200.

More specifically, the first sealing ring 610 and the second sealing ring 620 may be disposed on the suction hood 100, and the third sealing ring 630 may be disposed on the discharge casing 200; the first sealing ring 610 and the second sealing ring 620 can also be arranged on the exhaust casing 200, and the third sealing ring 630 is arranged on the air suction hood 100; the sealing structure may also adopt other structures that can generate a sealing effect on the ventilation openings of the air intake cover 100 and the exhaust housing 200, and the description of this embodiment is omitted.

Further, in the present embodiment, a plug assembly 250 is disposed between the blower 300 and the inner wall of the exhaust housing 200. Satisfy the requirement that fan 300 installs on the interior terminal surface of exhaust casing 200 through grafting subassembly 250, the dismouting is also convenient moreover, conveniently carries out dismouting maintenance or change to fan 300.

Further, in the present embodiment, a filter cup 700 is further included; the filter cup 700 is hermetically connected with the air inlet of the air suction hood 100. The suction hood 100 serves as a communicating component between the filter cup 700 and the fan 300, and dust and impurities sucked by the dust collector can be filtered through the filter cup 700, so that the dust and impurities carried by gas are prevented from flowing to the fan 300 and further interfering with the normal operation of the fan 300.

Further, in the present embodiment, a second positioning assembly 520 is disposed between the suction hood 100 and the filter cup 700. The second positioning assembly 520 may allow for accurate positioning of the filter cup 700 with respect to the suction hood 100.

More specifically, referring to fig. 4, the second positioning component 520 may adopt a positioning and matching manner of a clamping groove and a clamping piece, and certainly, the second positioning component 520 may also adopt other positioning structures as long as the requirement of realizing the positioning effect between the air suction cover 100 and the filter cup 700 can be met.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A noise reduction structure is characterized by comprising an air suction hood, an air exhaust shell and a fan;

the air exhaust shell is hollow, and the air suction cover is arranged at the opening of the air exhaust shell;

a bending piece is arranged inside the exhaust shell;

a bent air duct is formed between the outer wall of the bent piece and the inner wall of the exhaust shell;

the tail end of the bent air duct is provided with an air outlet on the outer wall of the air exhaust shell;

the air suction cover is provided with a surrounding piece corresponding to the bending piece;

the fan is arranged on the inner wall of the exhaust shell and is positioned between the inner cavity of the bending piece and the inner cavity of the surrounding piece.

2. Noise reducing structure according to claim 1, characterized in that the enclosure is provided with a sealing ring inside;

the air outlet of the air suction cover is connected with the air suction port of the fan in a sealing manner through the sealing ring.

3. The noise reduction structure according to claim 1, wherein the outer wall of the exhaust casing is provided with a first connecting member, and the outer wall of the suction hood is provided with a second connecting member;

the first connecting piece and the second connecting piece are provided with corresponding connecting holes.

4. A noise reducing structure according to claim 3, characterized in that the outer wall of the air exhaust casing is recessed inwards to form a mounting location for the first connector.

5. The noise reducing structure of claim 1, wherein a first positioning assembly is disposed between the suction hood and the exhaust housing.

6. The noise reducing structure of claim 1, wherein the connection between the suction hood and the exhaust housing is connected by a sealing structure.

7. The noise reducing structure of claim 6, wherein the sealing structure comprises a first seal ring, a second seal ring, and a third seal ring;

the first sealing ring is arranged inside the second sealing ring;

and a sealing groove matched with the third sealing ring is formed between the outer wall of the first sealing ring and the inner wall of the second sealing ring.

8. The noise reduction structure according to claim 1, wherein a plug-in assembly is provided between the fan and the inner wall of the exhaust casing.

9. A noise reducing construction according to any of claims 1-8, further comprising a filter cup;

the filter cup is connected with the air inlet of the air suction cover in a sealing way.

10. The noise reducing structure of claim 9, wherein a second positioning assembly is disposed between the suction hood and the filter cup.

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