CN206346953U

CN206346953U - A kind of noise reduction spiral case

Info

Publication number: CN206346953U
Application number: CN201621454395.3U
Authority: CN
Inventors: 左伟
Original assignee: ZHONGSHAN WEISHI GAS APPLIANCE Co Ltd
Current assignee: ZHONGSHAN WEISHI GAS APPLIANCE Co Ltd
Priority date: 2016-12-28
Filing date: 2016-12-28
Publication date: 2017-07-21
Anticipated expiration: 2026-12-28

Abstract

The utility model discloses a kind of noise reduction spiral case, include air outlet, snail tongue and inner chamber, snail tongue is located at air outlet lower end and inner chamber link position, it is characterized in that, the outer molded line of the inner chamber includes the first paragraph circular arc line being sequentially connected, second segment circular arc line, 3rd section of circular arc line and four arcses line, the first area of uniform bloop is provided with the medial surface of the air outlet, the second area of uniform bloop is provided with the snail tongue, the 3rd region of uniform bloop is provided with the outer wall of the inner chamber, the first area, second area and the 3rd region are rectangular after being sequentially connected and deploying, the length of the rectangle is 215mm to 218mm, width is 175mm to 180mm.

Description

A kind of noise reduction spiral case

Technical field

The utility model is related to a kind of noise reduction spiral case, belongs to ventilation equipment technical field.

Background technology

Ventilation equipment, such as range hood etc, the main generating means of noise be in ducting system, ducting system again It is maximum with the noise that spiral case is produced.Blower fan reaches balanced ventilation by spiral case effect, this air-supply for causing blower fan generation and spiral case Contact and produce noise.On the premise of ventilation equipment power is continuously increased, air output is consequently increased, and spiral case produce make an uproar Sound also increases, and has a strong impact on the comfort of user.

Utility model content

The purpose of this utility model is to overcome the shortcomings of in background technology that, there is provided a kind of noise reduction spiral case, it can reduce sound Make an uproar.

To achieve these goals, the technical solution adopted in the utility model：

A kind of noise reduction spiral case, includes air outlet, snail tongue and inner chamber, and snail tongue is located at air outlet lower end and inner chamber connection position Put, the outer molded line of the inner chamber includes the first paragraph circular arc line, second segment circular arc line, the 3rd section of circular arc line and the 4th that are sequentially connected Section circular arc line, the first area of uniform bloop is provided with the medial surface of the air outlet, is provided with the snail tongue The second area of uniform bloop, is provided with the 3rd region of uniform bloop, firstth area on the outer wall of the inner chamber Domain, second area and the 3rd region are rectangular after being sequentially connected and deploying, and the length of the rectangle is 215mm to 218mm, width For 175mm to 180mm.

Among one or more embodiments of the present utility model, the length of the rectangle is 216mm, and width is 178mm, its The length of middle first area is 128.7mm, and the length of second area is 19.2mm, and the length in the 3rd region is 68.2mm.

Among one or more embodiments of the present utility model, the molded line of the snail tongue is by transversal, circle on the inside of air outlet Arc transition wire and first paragraph circular arc line are connected in sequence, and the radius of the arc transition line is 6.3mm to 6.7mm.

Among one or more embodiments of the present utility model, the radius of the first paragraph circular arc line for 145.0mm extremely 147.0mm, the radius of the second segment circular arc line is 160.0mm to 165.0mm, and the radius of the 3rd section of circular arc line is 178.0mm to 182.0mm, the radius of the four arcses line is 196.0mm to 200.0mm.

Among one or more embodiments of the present utility model, transversal is pacified with the inner chamber level on the inside of the air outlet The angle of wiring is 50 ° to 55 °, and the angle of transversal and the air outlet end face is 96 ° to 98 ° on the outside of the air outlet.

Among one or more embodiments of the present utility model, the termination of the air outlet end face and four arcses line The distance of position is 190mm to 195mm.

Among one or more embodiments of the present utility model, the height of the noise reduction spiral case for 178.0mm extremely 182.0mm。

The utility model beneficial effect produced compared with background technology：

Noise reduction spiral case of the present utility model, may be such that blower fan when running at high speed, excess air flow can pass through noise reduction in spiral case Hole is discharged rapidly, is reduced the generation of vortex in spiral case, and then is reduced sound and make an uproar, improves the comfort of user.

Brief description of the drawings

Fig. 1 is the overlooking surface view of noise reduction spiral case in embodiment；

Fig. 2 is the lateral plan of noise reduction spiral case in embodiment；

Fig. 3 is the expanded schematic diagram of first area, second area and the 3rd region in embodiment.

Embodiment

Embodiment of the present utility model is described below in detail, described embodiment example is shown in the drawings, wherein from beginning Same or similar element or element with same or like function are represented to same or similar label eventually.

, it is necessary to explanation in description of the present utility model, for the noun of locality, if any term " " center ", " transverse direction ", " longitudinal direction ", " length ", " width ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", The indicating position such as " bottom ", " interior ", " outer ", " clockwise ", " counterclockwise " and position relationship are based on orientation shown in the drawings or position Relation is put, narration the utility model is for only for ease of and simplifies description, rather than indicate or imply signified device or element There must be specific orientation, construct and operate with particular orientation, it is impossible to be interpreted as limitation specific protection model of the present utility model Enclose.

In addition, be only used for describing purpose if any term " first ", " second ", and it is not intended that indicating or implying relatively heavy The property wanted or the implicit quantity for indicating technical characteristic.Thus, defining " first ", " second " feature can express or implicit include One or more this feature, in the utility model description, " at least " is meant that one or more, unless otherwise bright It is really specific to limit.

In the utility model, except as otherwise clear stipulaties and restriction, if any term " assembling ", " connected ", " connection " term It should go to understand as broad sense, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；It can also be machine Tool is connected；Can be joined directly together or be connected by intermediary, can be that two element internals are connected.For For those of ordinary skill in the art, it can understand that specific in the utility model of above-mentioned term containing as the case may be Justice.

In utility model, unless otherwise prescribed and limit, fisrt feature second feature it " on " or it " under " can be with Directly contacted including the first and second features, it is not direct contact but by it that can also include fisrt feature and second feature Between other characterisation contact.Moreover, fisrt feature includes fisrt feature second in second feature " on " and " above " Directly over feature and oblique upper, or be only to represent that fisrt feature level height is higher than the height of second feature.Fisrt feature exists Second feature " under " and " following " fisrt feature that includes immediately below second feature or obliquely downward, or to be merely representative of first special Level height is levied less than second feature.

With reference to the accompanying drawing of specification, by being further described to embodiment of the present utility model, make The technical solution of the utility model and its advantage are clearer, clear and definite.It is to show to describe embodiment below with reference to accompanying drawing Example property, it is intended to explain the utility model, and it is not intended that to limitation of the present utility model.

It refer to shown in Fig. 1, Fig. 2 and Fig. 3, the utility model provides a kind of noise reduction spiral case, includes air outlet 1, snail Tongue 2 and inner chamber 3, snail tongue 2 are located at the lower end of air outlet 1 and the link position of inner chamber 3, and the outer molded line of the inner chamber 3 includes being sequentially connected First paragraph circular arc line 301, second segment circular arc line 302, the 3rd section of circular arc line 303 and four arcses line 304, in the air-out The first area 101 of uniform bloop 100 is provided with the medial surface of mouth 1, uniform bloop is provided with the snail tongue 2 100 second area 201, is provided with the 3rd region 300 of uniform bloop 100, described first on the outer wall of the inner chamber 3 Region 101, the region 300 of second area 201 and the 3rd are rectangular after being sequentially connected and deploying, and the length L of the rectangle is 215mm To 218mm, width L0 is 175mm to 180mm.Blower fan so be may be such that when running at high speed, excess air flow can pass through in spiral case Bloop 100 is discharged rapidly, is reduced the generation of vortex in spiral case, and then is reduced sound and make an uproar, improves the comfort of user.

Specifically, the length L of the rectangle is 216mm, and width L0 is 178mm, and the length L1 of wherein first area 101 is 128.7mm, the length L2 of second area is 19.2mm, and the length L3 in the 3rd region is 68.2mm.

Preferably, the molded line of the snail tongue 2 is by transversal 102, arc transition line 202 and first paragraph circular arc on the inside of air outlet Line 301 is connected in sequence, and the radius R0 of the arc transition line 202 is 6.3mm to 6.7mm, it is preferable that R0 is 6.5mm.Snail The dissection for the high velocity air that tongue is discharged to centrifugation blade impeller is small, reduces level of noise.

Preferably, the radius R1 of the first paragraph circular arc line 301 be 145.0mm to 147.0mm, the second segment circular arc line 302 radius R2 is 160.0mm to 165.0mm, and the radius R3 of the 3rd section of circular arc line 303 is 178.0mm to 182.0mm, The radius R4 of the four arcses line 304 is 196.0mm to 200.0mm.Preferably, R1 is 146.1mm, and R2 is 162.5mm, R3 is 180.3mm, and R4 is 198mm.Such noise reduction spiral case of appearance structure, its air quantity can improve 5%.

Preferably, the included angle A that transversal 102 is horizontally mounted line L1 with the inner chamber on the inside of the air outlet is 50 ° to 55 °, The included angle B of transversal 103 and the end face of air outlet 1 is 96 ° to 98 ° on the outside of the air outlet, it is preferable that included angle A is 52 °, folder Angle B is 97 °, and it can use wind to heat exchanger middle part, cause heat exchange uniform.

Preferably, the final position of the end face of air outlet 1 and four arcses line 304 apart from d be 190mm extremely 195mm, it is preferable that d is 193mm.

Preferably, the height h of the noise reduction spiral case is 178.0mm to 182.0mm, and specifically, h is 180mm.

In the description of specification, reference term " conjunction one embodiment ", " preferably ", " example ", " specific example " or The description of " some examples " etc. means specific features, structure, material or the feature for combining the embodiment or example description, comprising In at least one embodiment of the present utility model or example, differ in this manual for the schematic representation of above-mentioned term Surely identical embodiment or example are referred to.Moreover, specific features, structure, material or the feature of description can be any Combined in a suitable manner in one or more embodiments or example.

From the foregoing description of structures and principles it should be understood by those skilled in the art that, the utility model Above-mentioned embodiment is not limited to, it is equal using the improvement and replacement of techniques well known on the basis of the utility model Fall in protection domain of the present utility model, it should be limited by each claim.

Claims

1. a kind of noise reduction spiral case, includes air outlet, snail tongue and inner chamber, snail tongue is located at air outlet lower end and inner chamber link position, Characterized in that, the outer molded line of the inner chamber includes first paragraph circular arc line, second segment circular arc line, the 3rd section of circular arc being sequentially connected Line and four arcses line, are provided with the first area of uniform bloop on the medial surface of the air outlet, in the snail tongue On be provided with the second area of uniform bloop, the 3rd region of uniform bloop, institute are provided with the outer wall of the inner chamber State it is rectangular after first area, second area and the 3rd region are sequentially connected and deployed, the length of the rectangle for 215mm extremely 218mm, width is 175mm to 180mm.

2. a kind of noise reduction spiral case according to claim 1, it is characterised in that the length of the rectangle is 216mm, width is 178mm, wherein first area length are 128.7mm, and the length of second area is 19.2mm, and the length in the 3rd region is 68.2mm。

3. a kind of noise reduction spiral case according to claim 1 or 2, it is characterised in that the molded line of the snail tongue is in air outlet Side transversal, arc transition line and first paragraph circular arc line are connected in sequence, the radius of the arc transition line for 6.3mm extremely 6.7mm。

4. a kind of noise reduction spiral case according to claim 1 or 2, it is characterised in that the radius of the first paragraph circular arc line is 145.0mm to 147.0mm, the radius of the second segment circular arc line is 160.0mm to 165.0mm, the 3rd section of circular arc line Radius is 178.0mm to 182.0mm, and the radius of the four arcses line is 196.0mm to 200.0mm.

5. a kind of noise reduction spiral case according to claim 1 or 2, it is characterised in that on the inside of the air outlet transversal with it is described The angle that inner chamber is horizontally mounted line is 50 ° to 55 °, and the angle of transversal and the air outlet end face is 96 ° on the outside of the air outlet To 98 °.

6. a kind of noise reduction spiral case according to claim 1 or 2, it is characterised in that the air outlet end face and the 4th section of circle The distance of the final position of camber line is 190mm to 195mm.

7. a kind of noise reduction spiral case according to claim 1 or 2, it is characterised in that the height of the noise reduction spiral case is 178.0mm to 182.0mm.