CN109441883A - A kind of spiral case - Google Patents
A kind of spiral case Download PDFInfo
- Publication number
- CN109441883A CN109441883A CN201811387101.3A CN201811387101A CN109441883A CN 109441883 A CN109441883 A CN 109441883A CN 201811387101 A CN201811387101 A CN 201811387101A CN 109441883 A CN109441883 A CN 109441883A
- Authority
- CN
- China
- Prior art keywords
- spiral case
- back plate
- section
- foreboard
- spiral
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
- F04D29/4233—Fan casings with volutes extending mainly in axial or radially inward direction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of spiral case, including spiral case back plate and spiral case foreboard, spiral case back plate and spiral case foreboard are all scroll casing shape, and spiral case hole is all arranged on spiral case back plate and spiral case foreboard, spiral case hole is eccentrically set in spiral case back plate and spiral case foreboard, and motor mounting rack is fixedly installed on the spiral case hole of spiral case back plate；In order to install motor mounting rack, increases the intensity of spiral case back plate, reinforcing rib is set in spiral case back plate, reinforcing rib is bulk, and reinforcing rib is arranged along the spiral case hole of spiral case back plate, so that motor mounting rack is consolidated and be mounted in spiral case back plate；Spiral case coaming plate is fixedly mounted in the periphery of spiral case back plate and spiral case foreboard, spiral case back plate, spiral case foreboard and spiral case coaming plate form an air outlet, volute flange disk is fixedly installed on air outlet, volute flange disk is attached for spiral case in external device (ED), provided with lower convex section, the setting of lower convex section increases spiral case hole lower edge to the height of the distance A of spiral case lower surface, increases the air quantity of air outlet.
Description
Technical field
The ventilation equipment technical field that the invention belongs to drive air to flow is related to one kind and is used cooperatively with centrifugation blade
Spiral case.
Background technique
For the spiral case and centrifugation blade in ventilation equipment, the inner cavity molded line of quality, performance and spiral case, match centrifugation
Fan blade blade profile shape is closely related, and the inner cavity molded line for how designing spiral case is most important, the interior lumen type of the spiral case of ideal scheme
Line design, the air quantity that will lead to ventilation equipment increases, but level of noise reduces；At present with the matched spiral case of centrifugation blade, inner cavity
Molded line selects that section spiral line generally using gradually opening helix, for interception, and parameter is again thousand poor hundred different, causes service performance
It is irregular；
Chinese invention patent ZL201510843424.9 discloses a kind of " spiral case for range hood " structure；It is public
Spiral case has been opened, five spiral case inlet pressures, respectively the first spiral case inlet pressure, the second spiral case inlet pressure, third volute type are equipped with using volute tongue
Volute tongue is divided into four sections of regions, respectively the first spiral case by line, the 4th spiral case inlet pressure, the 5th spiral case inlet pressure, five spiral case inlet pressures
The front face area of section, the second spiral case section, third spiral case section, the 4th spiral case section, the second spiral case section is greater than the first spiral case section windward
Area, the front face area of third spiral case section is greater than the front face area of the 4th spiral case section, therefore it can effectively improve the pulse of volute tongue
Vibration reduces the air-swirl at air outlet, and then makes that the noise of range hood is lower, vortex is less；The disadvantage is that: although this
The structure of sample can reduce the noise of centrifugal blower, but such structure can also reduce the air output of centrifugal blower.Do not have also at present
Develop that a kind of structure is simple, and air output is big, the low spiral case of noise.
Summary of the invention
The present invention mainly solves technical problem present in the above-mentioned prior art, provides a kind of spiral case.
Above-mentioned technical problem of the invention is mainly to be addressed by following technical proposals: a kind of spiral case, including snail
Shell back plate and spiral case foreboard, spiral case back plate and spiral case foreboard are all scroll casing shape, and spiral case is all arranged on spiral case back plate and spiral case foreboard
Hole, spiral case hole are eccentrically set in spiral case back plate and spiral case foreboard, and motor mounting rack is fixedly installed on the spiral case hole of spiral case back plate；
In order to install motor mounting rack, increases the intensity of spiral case back plate, reinforcing rib is set in spiral case back plate, reinforcing rib is bulk, is reinforced
Muscle is arranged along the spiral case hole of spiral case back plate, so that motor mounting rack is consolidated and is mounted in spiral case back plate；Spiral case back plate and spiral case
Spiral case coaming plate is fixedly mounted in the periphery of foreboard, and spiral case back plate, spiral case foreboard and spiral case coaming plate form an air outlet, and air outlet is
Volute flange disk is fixedly installed on air outlet for rectangle, and volute flange disk is attached for spiral case in external device (ED), and feature exists
In:
Spiral case back plate is consistent with the shape of spiral case foreboard, and the shape of spiral case back plate and spiral case foreboard is by the first spiral case section,
Successively the first connection forms for two spiral case sections, third spiral case section and the 4th spiral case section, the first spiral case section, the second spiral case section, third snail
Smooth Nature Link between shell section and each section of the 4th spiral case section, it is convex under being arranged between two sections of third spiral case section and the 4th spiral case section
Section, the setting of lower convex section increase spiral case hole lower edge to the height of the distance A of spiral case lower surface, prove by repetition test,
At identical conditions, spiral case hole lower edge to spiral case lower surface distance A height length to the big of the air quantity of air outlet
Small to have direct relation, the height of the distance A of increase spiral case hole lower edge to spiral case lower surface can increase the air quantity of air outlet；For
4th spiral case section and air outlet more smooth must can connect, the setting changeover portion at the 4th spiral case section section tail.
Further, the length of lower convex section is the height of distance A of the spiral case hole lower edge of former spiral case to spiral case lower surface
4-11%；When the length of lower convex section is too long, connection between third spiral case section inconvenient first and the 4th spiral case section makes third
It cannot smoothly be connected between spiral case section and the 4th spiral case section, will increase wind-dryness in this way, and the length of lower convex section is too long for wind
The increase of amount does not help, also will affect the overall beautiful of spiral case.
Further, due to the setting of lower convex section, increase the whole height of spiral case, and the space in the equipment such as integrated kitchen range
It is very limited, in order not to increase the volume of the equipment such as integrated kitchen range, in the first spiral case section of spiral case back plate and the company of the second spiral case section
Place's setting back plate flat-top is connect, foreboard flat-top is arranged in the first spiral case section of spiral case foreboard and the junction of the second spiral case section, and spiral case encloses
Coaming plate flat-top is set on plate, and spiral case back plate, spiral case foreboard and spiral case coaming plate form a spiral case flat-top, snail after holding together
Shell flat-top can reduce the height of entire spiral case, relatively the installation of spiral case.
Further, due to the setting of spiral case flat-top, the height of the distance C of spiral case hole top edge to spiral case upper surface subtracts
It is small, proved by repetition test, at identical conditions, the height of the distance C of spiral case hole top edge to spiral case upper surface it is big
The height of small size and noise with the air output of spiral case is without obviously contacting, the distance C of spiral case hole top edge to spiral case upper surface
The reduction of height will not reduce the air output of centrifugal blower, the noise of centrifugal blower will not be increased.
Further, the fixed bracket of spiral case is fixedly installed in spiral case back plate and spiral case foreboard in appearance, and the fixed bracket of spiral case is used
In spiral case is fixed in the equipment such as integrated kitchen range.
Further, hot cover stent is locked in two sections of fixed settings of spiral case coaming plate, locks and lock heat cover is fixedly mounted on hot cover stent,
Heat insulating reflecting layer is set in the hot one side for covering the electric spiral case of direction of lock, and heat insulating reflecting layer, which can prevent from being installed on, locks hot cover between spiral case
Electric heater unit issue heat by lock heat cover distribute, guarantee electric heater unit issue heat can be absorbed by spiral case；Lock
Hot cover flat-top is locked in the upper surface setting of heat cover, is locked hot cover flat-top and is used cooperatively with spiral case flat-top, for reducing the whole high of spiral case
Degree.
Further, also it is fixedly mounted air-ducting ring on spiral case foreboard, air-ducting ring can must be imported extraneous air is more smooth
In spiral case, increase the air output of spiral case, and wind-dryness can be reduced.
Compared with prior art, the present invention having the following characteristics that
(1) lower convex section is set between two sections of third spiral case section and the 4th spiral case section, and the setting of lower convex section keeps spiral case hole following
Edge to spiral case lower surface distance A height increase, increase spiral case hole lower edge to spiral case lower surface distance A height, energy
Increase the air quantity of air outlet；
(2) spiral case flat-top is set, and the height of the distance C of spiral case hole top edge to spiral case upper surface reduces, spiral case flat-top
The whole height that spiral case can be reduced is set, and the reduction of height of distance C of spiral case hole top edge to spiral case upper surface will not subtract
The air output of small centrifugal blower will not increase the noise of centrifugal blower.
Detailed description of the invention
Fig. 1 is a kind of perspective view of the invention.
Fig. 2 is a kind of explosive view of the invention.
Fig. 3 is a kind of profile diagram of the invention.
In figure: 1, motor mounting rack；2, spiral case back plate；3, spiral case foreboard；4, spiral case coaming plate；5, the fixed bracket of spiral case；6,
Spiral case flat-top；7, volute flange disk；8, changeover portion；9, lock heat cover；10, air-ducting ring；11, hot cover stent is locked；12, lower convex section；13,
First spiral case section；14, the second spiral case section；15, third spiral case section；16, the 4th spiral case section；17, spiral case hole；18, air outlet；20,
Back plate flat-top；21, reinforcing rib；30, foreboard flat-top；40, coaming plate flat-top；90, hot cover flat-top is locked.
Specific embodiment
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
Embodiment: a kind of as shown in Figure 1 to Figure 3, spiral case, including spiral case back plate and spiral case foreboard, spiral case back plate and spiral case
Foreboard is all scroll casing shape, and spiral case hole is all arranged in spiral case back plate and spiral case foreboard, and spiral case hole is eccentrically set on spiral case back plate and snail
On shell foreboard, motor mounting rack is fixedly installed on the spiral case hole of spiral case back plate；In order to install motor mounting rack, increase spiral case back plate
Intensity, reinforcing rib is set in spiral case back plate, and reinforcing rib is bulk, and reinforcing rib is arranged along the spiral case hole of spiral case back plate, makes electricity
Machine mounting rack, which can consolidate, to be mounted in spiral case back plate；Spiral case coaming plate, spiral case is fixedly mounted in the periphery of spiral case back plate and spiral case foreboard
Back plate, spiral case foreboard and spiral case coaming plate form an air outlet, and air outlet is rectangle, and volute flange is fixedly installed on air outlet
Disk, volute flange disk are attached for spiral case in external device (ED), it is characterised in that:
Spiral case back plate is consistent with the shape of spiral case foreboard, and the shape of spiral case back plate and spiral case foreboard is by the first spiral case section,
Successively the first connection forms for two spiral case sections, third spiral case section and the 4th spiral case section, the first spiral case section, the second spiral case section, third snail
Smooth Nature Link between shell section and each section of the 4th spiral case section, it is convex under being arranged between two sections of third spiral case section and the 4th spiral case section
Section, the setting of lower convex section increase spiral case hole lower edge to the height of the distance A of spiral case lower surface, prove by repetition test,
At identical conditions, spiral case hole lower edge to spiral case lower surface distance A height length to the big of the air quantity of air outlet
Small to have direct relation, the height of the distance A of increase spiral case hole lower edge to spiral case lower surface can increase the air quantity of air outlet；For
4th spiral case section and air outlet more smooth must can connect, the setting changeover portion at the 4th spiral case section section tail.
Further, the length of lower convex section is the height of distance A of the spiral case hole lower edge of former spiral case to spiral case lower surface
4-11%；When the length of lower convex section is too long, connection between third spiral case section inconvenient first and the 4th spiral case section makes third
It cannot smoothly be connected between spiral case section and the 4th spiral case section, will increase wind-dryness in this way, and the length of lower convex section is too long for wind
The increase of amount does not help, also will affect the overall beautiful of spiral case.
Further, the spiral case and not the spiral case air quantity of lower convex section, wind-dryness data comparison for increasing lower convex section, such as following table institute
Show:
Increasing lower convex section spiral case, (increased length is the spiral case hole lower edge of former spiral case to the distance A of spiral case lower surface
The 6% of height) air quantity, wind-dryness data:
| Gear | Voltage | Power supply | Input power | Revolving speed | Noise | Air quantity |
| SH (quick-fried) | 220V | 1.68A | 368W | 1232rpm | 71dB | 15.093m3/min |
| H (height) | 220V | 1.45A | 320W | 1100rpm | 68dB | 12.359m3/min |
| M (in) | 220V | 1.22A | 267W | 910rpm | 64dB | 9.125m3/min |
| L (low) | 220V | 1.01A | 222W | 775rpm | 61dB | 7.236m3/min |
There is no air quantity, the wind-dryness data of lower convex section spiral case:
Further, due to the setting of lower convex section, increase the whole height of spiral case, and the space in the equipment such as integrated kitchen range
It is very limited, in order not to increase the volume of the equipment such as integrated kitchen range, in the first spiral case section of spiral case back plate and the company of the second spiral case section
Place's setting back plate flat-top is connect, foreboard flat-top is arranged in the first spiral case section of spiral case foreboard and the junction of the second spiral case section, and spiral case encloses
Coaming plate flat-top is set on plate, and spiral case back plate, spiral case foreboard and spiral case coaming plate form a spiral case flat-top, snail after holding together
Shell flat-top can reduce the height of entire spiral case, relatively the installation of spiral case.
Further, due to the setting of spiral case flat-top, the height of the distance C of spiral case hole top edge to spiral case upper surface subtracts
It is small, proved by repetition test, at identical conditions, the height of the distance C of spiral case hole top edge to spiral case upper surface it is big
The height of small size and noise with the air output of spiral case is without obviously contacting, the distance C of spiral case hole top edge to spiral case upper surface
The reduction of height will not reduce the air output of centrifugal blower, the noise of centrifugal blower will not be increased.
Further, the spiral case and spiral case air quantity, the wind-dryness data comparison without spiral case flat-top for increasing spiral case flat-top, it is as follows
Shown in table:
Increase air quantity, the wind-dryness data of spiral case flat-top spiral case:
| Gear | Voltage | Power supply | Input power | Revolving speed | Noise | Air quantity |
| SH (quick-fried) | 220V | 1.68A | 368W | 1232rpm | 71dB | 15.096m3/min |
| H (height) | 220V | 1.45A | 320W | 1100rpm | 68dB | 12.357m3/min |
| M (in) | 220V | 1.22A | 267W | 910rpm | 64dB | 9.119m3/min |
| L (low) | 220V | 1.01A | 222W | 775rpm | 61dB | 7.229m3/min |
There is no air quantity, the wind-dryness data of spiral case flat-top spiral case:
| Gear | Voltage | Power supply | Input power | Revolving speed | Noise | Air quantity |
| SH (quick-fried) | 220V | 1.68A | 363W | 1240rpm | 70dB | 15.101m3/min |
| H (height) | 220V | 1.45A | 314W | 1119rpm | 68dB | 12.360m3/min |
| M (in) | 220V | 1.20A | 259W | 928rpm | 65dB | 9.130m3/min |
| L (low) | 220V | 1.00A | 210W | 789rpm | 61dB | 7.241m3/min |
Further, the fixed bracket of spiral case is fixedly installed in spiral case back plate and spiral case foreboard in appearance, and the fixed bracket of spiral case is used
In spiral case is fixed in the equipment such as integrated kitchen range.
Further, hot cover stent is locked in two sections of fixed settings of spiral case coaming plate, lock hot cover stent for be fixedly mounted lock it is hot
Cover, lock heat cover can prevent from being installed on lock heat cover and spiral case towards setting heat insulating reflecting layer in the one side of electric spiral case, heat insulating reflecting layer
Between electric heater unit issue heat by lock heat cover distribute, guarantee electric heater unit issue heat can be inhaled by spiral case
It receives, hot cover flat-top is locked in the upper surface setting for locking heat cover, is locked hot cover flat-top and is used cooperatively with spiral case flat-top, for reducing the whole of spiral case
Body height.
Further, also it is fixedly mounted air-ducting ring on spiral case foreboard, air-ducting ring can must be imported extraneous air is more smooth
In spiral case, increase the air output of spiral case, and wind-dryness can be reduced.
Finally it is pointed out that above embodiments are only the more representational examples of the present invention.It is clear that the invention is not restricted to
Above-described embodiment, acceptable there are many deformations.Any letter to the above embodiments according to the technical essence of the invention
Single modification, equivalent variations and modification, are considered as belonging to the scope of protection of the present invention.
Claims (6)
1. a kind of spiral case, including spiral case back plate and spiral case foreboard, spiral case back plate and spiral case foreboard are all scroll casing shape, spiral case back plate and
Spiral case hole is all set on spiral case foreboard, and spiral case hole is eccentrically set in spiral case back plate and spiral case foreboard, the spiral case hole of spiral case back plate
Upper fixed setting motor mounting rack；Reinforcing rib is set in spiral case back plate, and reinforcing rib is arranged along the spiral case hole of spiral case back plate；Spiral case
Spiral case coaming plate is fixedly mounted in the periphery of back plate and spiral case foreboard, and spiral case back plate, spiral case foreboard and spiral case coaming plate form an outlet air
Mouthful, air outlet is rectangle, and volute flange disk is fixedly installed on air outlet, it is characterised in that:
Spiral case back plate is consistent with the shape of spiral case foreboard, and the shape of spiral case back plate and spiral case foreboard is by the first spiral case section, the second snail
Successively the first connection forms for shell section, third spiral case section and the 4th spiral case section, the first spiral case section, the second spiral case section, third spiral case section
Lower convex section is arranged between two sections of third spiral case section and the 4th spiral case section in the smooth Nature Link between each section of the 4th spiral case section, under
The setting of convex-segment increases spiral case hole lower edge to the height of the distance A of spiral case lower surface, is arranged at the 4th spiral case section section tail
Changeover portion.
2. a kind of spiral case according to claim 1, it is characterised in that the length of the lower convex section is under the spiral case hole of former spiral case
Edge to spiral case lower surface distance A height 4-11%.
3. a kind of spiral case according to claim 1, it is characterised in that the first spiral case section and the second spiral case of the spiral case back plate
Back plate flat-top is arranged in the junction of section, and foreboard flat-top is arranged in the first spiral case section of spiral case foreboard and the junction of the second spiral case section,
Coaming plate flat-top is set on spiral case coaming plate, and spiral case back plate, spiral case foreboard and spiral case coaming plate form a spiral case after holding together
Flat-top.
4. a kind of spiral case according to claim 1, it is characterised in that fixation is set in appearance for the spiral case back plate and spiral case foreboard
Set the fixed bracket of spiral case.
5. a kind of spiral case according to claim 1, it is characterised in that two sections of fixed settings lock heat cover branch of the spiral case coaming plate
Frame is locked and lock heat cover is fixedly mounted on hot cover stent, and hot cover flat-top is locked in the upper surface setting for locking heat cover, locks hot cover flat-top and spiral case is flat
Top is used cooperatively.
6. a kind of spiral case according to claim 1, it is characterised in that air-ducting ring is also fixedly mounted on the spiral case foreboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811387101.3A CN109441883A (en) | 2018-11-21 | 2018-11-21 | A kind of spiral case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811387101.3A CN109441883A (en) | 2018-11-21 | 2018-11-21 | A kind of spiral case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109441883A true CN109441883A (en) | 2019-03-08 |
Family
ID=65553302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811387101.3A Pending CN109441883A (en) | 2018-11-21 | 2018-11-21 | A kind of spiral case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109441883A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110273861A (en) * | 2019-05-24 | 2019-09-24 | 浙江工业大学 | A kind of auxiliary thermal of centrifugal blower volute tongue used for range hood |
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| CN207864255U (en) * | 2018-02-08 | 2018-09-14 | 浙江帅康电气股份有限公司 | A kind of spiral case with surge bunker and the kitchen ventilator comprising the spiral case |
| CN209430487U (en) * | 2018-11-21 | 2019-09-24 | 浙江板川电器有限公司 | A kind of spiral case |
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2018
- 2018-11-21 CN CN201811387101.3A patent/CN109441883A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2924364Y (en) * | 2006-07-05 | 2007-07-18 | 浙江帅康电气股份有限公司 | Range hood shell and range hood mounted with same |
| CN102345889A (en) * | 2010-07-30 | 2012-02-08 | 博西华电器（江苏）有限公司 | Protective cover of heating device, and volute and range hood with protective cover |
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| CN103711730A (en) * | 2012-09-29 | 2014-04-09 | 芜湖美的厨卫电器制造有限公司 | Volute, fan with same and exhaust hood |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110273861A (en) * | 2019-05-24 | 2019-09-24 | 浙江工业大学 | A kind of auxiliary thermal of centrifugal blower volute tongue used for range hood |
| CN110273861B (en) * | 2019-05-24 | 2024-05-07 | 浙江工业大学 | Centrifugal fan volute tongue auxiliary heating device for range hood |
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