CN206429440U - One kind is without spiral case air-conditioning draught fan - Google Patents
One kind is without spiral case air-conditioning draught fan Download PDFInfo
- Publication number
- CN206429440U CN206429440U CN201720040194.7U CN201720040194U CN206429440U CN 206429440 U CN206429440 U CN 206429440U CN 201720040194 U CN201720040194 U CN 201720040194U CN 206429440 U CN206429440 U CN 206429440U
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- China
- Prior art keywords
- impeller
- blade
- spiral case
- draught fan
- case air
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Abstract
The utility model is related to one kind without spiral case air-conditioning draught fan, including base, panel, panel reinforcing plate, motor cabinet, impeller and motor, the motor base is fixed on the base, the motor is fixed on the motor cabinet, the impeller is arranged on the axle of the motor, the panel is located in front of the impeller and is fixed on base, the panel reinforcing plate is arranged on the panel two ends and is fixed on the base, the impeller adds the design of vaneless diffuser, the total head and efficiency of blower fan is enhanced.
Description
Technical field
The utility model is related to air-conditioning draught fan technical field, and in particular to one kind is without spiral case air-conditioning draught fan.
Background technology
Existing conventional without spiral case air-conditioning draught fan, impeller is usually design when using single air intake with spiral case, due to without snail
Shell blower fan does not have spiral case, and leaving whirl velocity kinetic energy can not be utilized, and exit flow is diffused too quickly, and cause kinetic energy to static pressure
The conversion ratio that can be converted is relatively low, and blower pressure can not reach perfect condition.
Utility model content
Based on this, the purpose of this utility model is to provide a kind of total head, efficiency has a distinct increment without spiral case air-conditioning
Blower fan.
One kind is without spiral case air-conditioning draught fan, including base, panel, motor cabinet, impeller and motor, and the motor base is fixed on
On the base, the motor is fixed on the motor cabinet, and the impeller is arranged on the axle of the motor, the panel position
In front of the impeller and be fixed on base, the impeller includes shroud, hub disk and blade, the blade be arranged on it is described before
Between disk and hub disk, the shroud and hub disk are extended radially out in the blade, the blade exit end to the impeller outlet end
Between form no leaf diffusion region, the shroud stretch out in the blade part and blade exit end axial direction angle it is big
In or equal to 90 °.The impeller adds the design of vaneless diffuser, makes the total head and efficiency of blower fan and has larger carry
It is high.
Further, the angle that the shroud stretches out in the part and blade exit end axial direction of the blade is 90 °
To 100 °.Impeller is preferable using the blower press and efficiency of this scope diffusion angle.
Further, the angle that the shroud stretches out in the part and blade exit end axial direction of the blade is 93 °.
This Voluteless fan is optimal using the diffusion angle performance of this angle.
Further, the blade exit end is set to impeller outlet end and impeller diameter equal proportion.The setting of equal proportion
Blower fan volume and performance is set to reach preferably equalization point.
Further, the blade exit end to impeller outlet end and impeller diameter ratio be 1:15.This is without spiral case wind
Machine reaches appropriate state using the blower fan volume and performance of this ratio.
Further, the motor cabinet front is trapezoidal.Just more preferable supporting role is served with trapezoidal motor cabinet.
Further, the panel strengthening version side view is in up-narrow and down-wide.The setting makes panel more firm, is difficult pine
It is dynamic.
In order to more fully understand and implement, the utility model is described in detail below in conjunction with the accompanying drawings.
Compared to prior art, there is the impeller described in the utility model without spiral case air-conditioning draught fan vaneless diffuser to set
Count, and one 93 ° of diffusion angle is formed between the shroud and blade, blade exit end brings out to form one to impeller outlet
It is individual with impeller diameter equal proportion without leaf diffusion region, blower fan is had comprehensively in performances such as total pressure efficiency, total head, static pressure
Lifting.
Brief description of the drawings
Fig. 1 is side schematic view of the present utility model；
Fig. 2 is front schematic view of the present utility model；
Fig. 3 is the side schematic view of impeller described in the utility model.
Embodiment
A kind of spiral case air-conditioning draught fan, including impeller 1, motor 2, panel 3, panel reinforcing plate 4, motor cabinet 5 and base 6.Institute
State motor cabinet 5 to be fixed on the base 6 using screw, the motor 2 is fixed on the motor cabinet 5 using screw, described
Impeller 1 is arranged on the axle of the motor 2, and the panel 3 is located at the front of impeller 1 and is fixed on using screw on base 6,
The panel reinforcing plate 4 is arranged on the two ends of panel 3 and is fixed on using screw on the base 6.The impeller 1 takes nothing
Leaf diffuser Design, including blade 11, shroud 12 and hub disk 13, the blade 11 be arranged on the shroud 12 and hub disk 13 it
Between, the shroud 12 and hub disk 13 are extended radially out in blade 11, and the blade exit end is formed between the impeller outlet end
Without leaf diffusion region, the angle that the shroud stretches out in the part and blade exit end axial direction of the blade is diffusion angle β,
The diffusion angle β is more than or equal to 90 °.
Specifically, gas flow rate can be caused excessive if diffusion angle β is too small, causes friction loss to increase, conversely, gas can be made
The diffusion loss increase of body outflow impeller 1, draws the diffusion angle β in 90 ° to 100 ° scope inner blowers after test of many times
Total head and efficiency preferably, in the present embodiment, diffusion angle β is preferably 93 °.The design of vaneless diffuser makes kinetic energy turn to static energy
The conversion ratio of change is greatly improved, moreover it is possible to increase pressure by improve the operating efficiency of impeller 1.
The a diameter of D of the impeller 1, is d from the port of export of blade 11 to the distance of the port of export of impeller 1, the region is to expand without leaf
Intermediate pressure section, the region is also referred to as vaneless diffuser, with the increase without leaf diffusion region, blower press and efficiency can on
Rise, to make blower fan volume and performance reach preferably equalization point, the exit of blade 11 to the exit of impeller 1 apart from d and
The diameter D of the impeller 1 takes equal proportion to design, and is preferably in a proportion of 1:15, in the present embodiment, by further experiment,
The ratio is set to 18:291.
Its front is trapezoidal in the welding fabrication of motor cabinet 5, the present embodiment；The panel reinforcing plate 4 is along vertical described
The side in the direction of panel 3 is up-narrow and down-wide, serves more preferable supporting role；The panel 3 offers air inlet.
Operation principle：It is described in the utility model to be additionally arranged vaneless diffuser at impeller outlet end without spiral case air-conditioning draught fan,
The shroud 12 and hub disk 13 stretch out in the blade, form one without leaf diffusion region, in this region, air flow area
Increase, flow velocity declines, static pressure height, and flowing becomes uniform, improves total head and efficiency.
Compared to prior art, the impeller 1 described in the utility model without spiral case air-conditioning draught fan is set with vaneless diffuser
Meter, and form between the shroud 12 and blade 11 one 93 ° of diffusion angle, the port of export of blade 11 to the port of export of impeller 1
One is formed with the diameter equal proportion of impeller 1 without leaf diffusion region, blower fan is had in performances such as total pressure efficiency, total head, static pressure
Comprehensive lifting.
Embodiment described above only expresses several embodiments of the present utility model, and it describes more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent scope.It should be pointed out that for the common skill of this area
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
Protection domain of the present utility model.
Claims (8)
1. one kind is without spiral case air-conditioning draught fan, including base, panel, motor cabinet, impeller and motor, it is characterised in that：The motor
Base is fixed on the base, and the motor is fixed on the motor cabinet, and the impeller is arranged on the axle of the motor,
The panel is located in front of the impeller and is fixed on base, and the impeller includes shroud, hub disk and blade, and the blade is set
Put between the shroud and hub disk, the shroud and hub disk are extended radially out in the blade, and the shroud stretches out in the leaf
The angle of the part of piece and blade exit end axial direction is more than or equal to 90 °.
2. it is according to claim 1 without spiral case air-conditioning draught fan, it is characterised in that：The shroud stretches out in the portion of the blade
It is 90 ° to 100 ° to divide the angle axial with the blade exit end.
3. it is according to claim 2 without spiral case air-conditioning draught fan, it is characterised in that：The shroud stretches out in the portion of the blade
It is 93 ° to divide the angle axial with the blade exit end.
4. it is according to claim 2 without spiral case air-conditioning draught fan, it is characterised in that：The blade exit end to impeller outlet end
Distance and impeller diameter equal proportion set.
5. it is according to claim 2 without spiral case air-conditioning draught fan, it is characterised in that：The blade exit end to impeller outlet end
Distance and impeller diameter ratio be 1:15.
6. it is according to claim 2 without spiral case air-conditioning draught fan, it is characterised in that：The motor cabinet front is trapezoidal.
7. it is according to claim 2 without spiral case air-conditioning draught fan, it is characterised in that：Also include panel reinforcing plate, the panel
Reinforcing plate abuts against the panel two ends and is fixed on the base.
8. it is according to claim 2 without spiral case air-conditioning draught fan, it is characterised in that：The panel strengthening version side view is presented
Narrow lower width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720040194.7U CN206429440U (en) | 2017-01-13 | 2017-01-13 | One kind is without spiral case air-conditioning draught fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720040194.7U CN206429440U (en) | 2017-01-13 | 2017-01-13 | One kind is without spiral case air-conditioning draught fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206429440U true CN206429440U (en) | 2017-08-22 |
Family
ID=59583128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720040194.7U Active CN206429440U (en) | 2017-01-13 | 2017-01-13 | One kind is without spiral case air-conditioning draught fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206429440U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109931289A (en) * | 2019-03-29 | 2019-06-25 | 上海理工大学 | A kind of vaneless diffuser of Voluteless fan |
-
2017
- 2017-01-13 CN CN201720040194.7U patent/CN206429440U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109931289A (en) * | 2019-03-29 | 2019-06-25 | 上海理工大学 | A kind of vaneless diffuser of Voluteless fan |
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