CN205297982U - Exhaust fan - Google Patents
Exhaust fan Download PDFInfo
- Publication number
- CN205297982U CN205297982U CN201620031259.7U CN201620031259U CN205297982U CN 205297982 U CN205297982 U CN 205297982U CN 201620031259 U CN201620031259 U CN 201620031259U CN 205297982 U CN205297982 U CN 205297982U
- Authority
- CN
- China
- Prior art keywords
- fan
- snail tongue
- utility
- model
- casing
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses an exhaust fan, including the casing, the casing is center pin symmetry setting, and the bottom axis department of casing is equipped with the fan, and inside center pin department of casing and the outside end that is located the fan are equipped with the snail tongue, and the snail tongue is also that the center pin symmetry sets up and one side of being close to the fan is protruding circular arc setting, the center pin of snail tongue and the coincidence of the center pin of casing. The beneficial effect of the utility model: the utility model discloses an end sets up the snail tongue in the outside of fan to reduce the turbine loss of fan in the casing, increased exhaust fan's the amount of wind.
Description
Technical field
The utility model relates to fan technical field, specifically, relates to a kind of ventilating fan.
Background technology
In fan technical field, for the ventilating fan of rotating, often need the housing of ventilating fan to be symmetrical set. But also there is following technical problem in this class ventilating fan: in the course of the work, the wind that fan produces collides on the sidewall of housing fan, and then can produce eddy current, and then can lose a large amount of air quantity, and then has influence on the service efficiency of fan, has wasted resource.
For the problem in above-mentioned correlation technique, effective solution is not yet proposed at present.
Utility model content
The purpose of this utility model is to provide a kind of ventilating fan, to overcome currently available technology above shortcomings.
For realizing above-mentioned technical purpose, the technical solution of the utility model is achieved in that
A kind of ventilating fan, comprise housing, described housing is central shaft and is symmetrical arranged, the axis place, bottom of described housing is provided with fan, described enclosure interior central axis and the outboard end that is positioned at fan are provided with snail tongue, described snail tongue is also that central shaft is symmetrical arranged and is protruding circular arc setting near a side of fan, and the central shaft of described snail tongue overlaps with the central shaft of housing.
Further, the distance of described snail tongue and fan is 10cm ~ 20cm.
Further, the angle of the arc-shaped edges of described snail tongue is 45 degree ~ 60 degree.
The beneficial effects of the utility model: the utility model, by the outboard end of fan, snail tongue being set, loses thereby reduced the turbine of fan in housing, has increased the air quantity of ventilating fan.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is according to the structural representation of the ventilating fan described in the utility model embodiment;
Fig. 2 is according to the structural representation one of the snail tongue described in the utility model embodiment;
Fig. 3 is according to the structural representation two of the snail tongue described in the utility model embodiment.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment. Based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art obtain, belongs to the scope that the utility model is protected.
As shown in Figure 1, according to a kind of ventilating fan described in embodiment of the present utility model, comprise housing 1, described housing 1 is central shaft and is symmetrical arranged, the axis place, bottom of described housing 1 is provided with fan 2, described housing 1 inside center axle place and the outboard end that is positioned at fan 2 are provided with snail tongue 3, and described snail tongue 3 is also that central shaft is symmetrical arranged and be protruding circular arc setting near a side of fan 2, and the central shaft of described snail tongue 3 overlaps with the central shaft of housing 1.
In the present embodiment, described snail tongue 3 is 10cm ~ 20cm with the distance of fan 2.
In the present embodiment, the angle of the arc-shaped edges of described snail tongue 3 is 45 degree ~ 60 degree.
As shown in Figure 2, be a kind of snail tongue structure of the present utility model.
As shown in Figure 3, be another kind of snail tongue structure of the present utility model.
In sum, by means of technique scheme of the present utility model, the utility model, by the outboard end of fan, snail tongue being set, loses thereby reduced the turbine of fan in housing, has increased the air quantity of ventilating fan.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (3)
1. a ventilating fan, comprise housing (1), described housing (1) is central shaft and is symmetrical arranged, the axis place, bottom of described housing (1) is provided with fan (2), it is characterized in that, described housing (1) inside center axle place and the outboard end that is positioned at fan (2) are provided with snail tongue (3), and described snail tongue (3) is also that central shaft is symmetrical arranged and be protruding circular arc setting near a side of fan (2), and the central shaft of described snail tongue (3) overlaps with the central shaft of housing (1).
2. ventilating fan according to claim 1, is characterized in that, described snail tongue (3) is 10cm ~ 20cm with the distance of fan (2).
3. ventilating fan according to claim 2, is characterized in that, the angle of the arc-shaped edges of described snail tongue (3) is 45 degree ~ 60 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620031259.7U CN205297982U (en) | 2016-01-12 | 2016-01-12 | Exhaust fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620031259.7U CN205297982U (en) | 2016-01-12 | 2016-01-12 | Exhaust fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205297982U true CN205297982U (en) | 2016-06-08 |
Family
ID=56475803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620031259.7U Expired - Fee Related CN205297982U (en) | 2016-01-12 | 2016-01-12 | Exhaust fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205297982U (en) |
-
2016
- 2016-01-12 CN CN201620031259.7U patent/CN205297982U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160608 Termination date: 20180112 |