CN103104515A - Negative-pressure fan - Google Patents
Negative-pressure fan Download PDFInfo
- Publication number
- CN103104515A CN103104515A CN2012105362955A CN201210536295A CN103104515A CN 103104515 A CN103104515 A CN 103104515A CN 2012105362955 A CN2012105362955 A CN 2012105362955A CN 201210536295 A CN201210536295 A CN 201210536295A CN 103104515 A CN103104515 A CN 103104515A
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- Prior art keywords
- negative
- pressure air
- air fan
- rain shade
- shade device
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Abstract
The invention provides a negative-pressure fan. The negative-pressure fan comprises an outer shell, a motor, fan blades and a transmission shaft, wherein the motor and the fan blades are respectively arranged in an air inlet and an air outlet at two ends of the outer shell and are connected through the transmission shaft. The fan blades are driven to rotate by the motor through the transmission shaft, and an effect of negative-pressure air exchange is achieved. A rain sheltering device is arranged on the upper portion of the air outlet of the outer shell, rain, snow and similar sundries are prevented from entering the fan blades and the motor, so that the fan blades and the motor are protected and can work in a normal state all the time.
Description
Technical field
The present invention relates to a kind of negative-pressure air fan, relate in particular to a kind of negative-pressure air fan with rain shade device.
Background technique
Negative-pressure air fan is the principle of utilizing cross-ventilation, negative pressure ventilation, by the subtend of infield---gate or window nature inhale fresh air, simultaneously indoor sultry gas is forced rapidly to discharge outdoor, to reach a kind of machine of cooling and cooling-down effect.Because of it has cost of investment low (disposable input only is the sixth of air-conditioning), air quantity large (ventilation rate can reach 99%), noise is low, power consumption is little (operating cost only for air-conditioning 1/10th), operate steadily, the life-span is long, the efficient high, therefore now utilized by increasing industrial and mineral factory building, it is also the excellent selection that modernization workshop cooling is ventilated.Especially safe, environmental protection, energy-conservation negative-pressure air fan will become the main flow of aeration-cooling equipment Market.
Consult shown in Figure 1, Fig. 1 is the stereogram of existing negative-pressure air fan 6, existing negative-pressure air fan 6 comprises shell 61, motor 62, flabellum 63 and transmission shaft (not embodying in the stereogram of Fig. 1), wherein said motor 62 and flabellum 63 lay respectively at shell 61 interior two ends, and be connected by transmission shaft, motor 62 drives flabellum 63 rotations by transmission shaft, reaches the effect of negative pressure ventilation.
For a long time, negative-pressure air fan 6 all is mounted on window and door frame, and its exhaust outlet 611 is all directly in the face of extraneous unfavourable weather condition.Owing to usually only being provided with filter screen 64 above shell 61 exhaust outlets 611, when running into rainstorm and other extreme weathers, the foreign matters such as sleet very easily pass the filter screen 64 at exhaust outlet 611 places, enter in negative-pressure air fan 6 shells 61, drop on flabellum 63 even the inside motor 62 on.And, due to have no occluder above shell 61 exhaust outlets 611, even in fine weather, when negative-pressure air fan 6 is not worked, the lighter foreign matter that is fallen by the top also may directly pass filter screen 64 and float in shell 61 intake grills 611, and then corrodes flabellum 63 and motor 62.If things go on like this, flabellum 63 and motor 62 are corroded by these type of article, easily go mouldy, get rusty until part is downright bad, thereby have a strong impact on utilization efficiency and the working life of negative-pressure air fan.
Summary of the invention
The object of the present invention is to provide a kind of negative-pressure air fan with rain shade device, to solve the problem that in negative-pressure air fan, part is easily corroded by foreign material such as sleet.
For achieving the above object, negative-pressure air fan of the present invention comprises: shell, motor, flabellum and transmission shaft, wherein said motor and flabellum lay respectively in the intake grill and exhaust outlet at shell two ends, and are connected by transmission shaft.Motor drives the flabellum rotation by transmission shaft, reaches the effect of negative pressure ventilation.Characteristics of the present invention are that described air outlet of casing top is provided with rain shade device, can protect flabellum and motor in negative-pressure air fan not to be subjected to the erosion of the foreign material such as sleet, thereby improve the utilization efficiency of negative-pressure air fan and increase the service life.
As a further improvement on the present invention, the cross section of described rain shade device is circular arc.
As a further improvement on the present invention, the length of described rain shade device is not less than the radius of exhaust outlet.
As a further improvement on the present invention, the arc length of described rain shade device and air outlet of casing bound fraction is not less than 1/3rd of exhaust outlet girth.
As a further improvement on the present invention, the shell of described rain shade device and negative-pressure air fan is one of the forming.
As a further improvement on the present invention, described rain shade device also can fit together after moulding respectively with negative-pressure air fan.
As a further improvement on the present invention, the shell of described rain shade device and negative-pressure air fan fits together after moulding respectively, and wherein the hardness of rain shade device is not less than the hardness of negative-pressure air fan shell.
As a further improvement on the present invention, the shell of described rain shade device and negative-pressure air fan fits together after moulding respectively, and wherein rain shade device is the thickening material, with prevent more greatly, harder foreign material smash it.
Compared with prior art, the invention has the beneficial effects as follows: rain shade device has effectively blocked outside foreign material to the impact of negative-pressure air fan.When especially running into the severse weathers such as wind and frost sleet, described rain shade device can stop the external foreign material such as rainwater effectively, prevent that it from entering the enclosure of negative-pressure air fan, thereby all parts that guarantee enclosure can and then not affect flabellum and the utilization efficiency of motor and operating life by foreign matters from being blocked, corrosion.
Description of drawings
Fig. 1 is the stereogram of existing negative-pressure air fan;
Fig. 2 is the stereogram of negative-pressure air fan of the present invention;
Fig. 3 is the side sectional view of negative-pressure air fan of the present invention.
Embodiment
The present invention is described in detail below in conjunction with each mode of execution shown in the drawings; but should be noted that; these mode of executions are not limitation of the present invention; those of ordinary skills are according to these mode of executions institutes work energy, method or structural equivalent transformation or substitute, within all belonging to protection scope of the present invention.
Fig. 2 and Fig. 3 are respectively stereogram and the side sectional view of negative-pressure air fan of the present invention, consult Fig. 2 and shown in Figure 3, and negative-pressure air fan 10 of the present invention comprises: shell 1, motor 2, flabellum 3, transmission shaft 4 and rain shade device 5.Wherein said motor 2 and flabellum 3 lay respectively in the intake grill 11 and exhaust outlet 12 at shell 1 two ends, and are connected by transmission shaft 4.During negative-pressure air fan 10 work, motor 2 starts, and drives flabellum 3 rotations by transmission shaft 4, reaches the effect of negative pressure ventilation.
As shown in Figure 2, rain shade device 5 involved in the present invention is arranged at negative-pressure air fan 10 shell 1 exhaust outlet 12 tops, and its cross section is circular arc.So, there is foreign matter to invade daily, and when running into the severse weathers such as wind and frost sleet, described rain shade device 5 can stop the external foreign material such as rainwater effectively, prevent that it from entering shell 1 inside of negative-pressure air fan 10 from exhaust outlet 12, thereby all parts, the especially flabellum 3 and the motor 2 that guarantee shell 1 inside can be by foreign matters from being blocked, corrosions, thereby guaranteed utilization efficiency and the operating life of flabellum 3 and motor 2, so whole negative-pressure air fan 10 can be worked steadily in the long term.
Further, rain shade device 5 involved in the present invention is one-body molded with negative-pressure air fan 10 shell 1 exhaust outlets 12.
Further, the length of rain shade device 5 involved in the present invention is not less than the radius size of exhaust outlet 12, to guarantee occlusion effect.
Further, rain shade device 5 involved in the present invention is not less than 1/3rd of shell 1 exhaust outlet 12 girths with the arc length of the bound fraction of negative-pressure air fan 10 shell 1 exhaust outlets 12, to guarantee occlusion effect.
Further, rain shade device 5 involved in the present invention can be screwed after moulding respectively with negative-pressure air fan 10 or closing-up together, be convenient to thereby have the good characteristic dismantling, clean, change.
Further, rain shade device 5 involved in the present invention separates moulding with negative-pressure air fan 10 shell 1 exhaust outlets 12, and described rain shade device 5 can adopt the larger rigid material of intensity to make, thereby improves to a greater degree its mechanical strength, increases the service life.
Further, rain shade device 5 involved in the present invention separates moulding with negative-pressure air fan 10 shell 1 exhaust outlets 12, and it is the thickening material, thereby guarantee more greatly, harder foreign matter can not damage it and then enter by pressure negative-pressure air fan 10 shell 1 inside, corrode its inner body, especially motor 2 and flabellum 3.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and in the situation that do not deviate from spirit of the present invention or essential characteristic, can realize the present invention with other concrete form.Therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, scope of the present invention is limited by claims rather than above-mentioned explanation, therefore is intended to include in the present invention dropping on the implication that is equal to important document of claim and all changes in scope.Any reference character in claim should be considered as limit related claim.
In addition, be to be understood that, although this specification is described according to mode of execution, but be not that each mode of execution only comprises an independently technological scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should make specification as a whole, and the technological scheme in each embodiment also can through appropriate combination, form other mode of executions that it will be appreciated by those skilled in the art that.
Claims (8)
1. negative-pressure air fan, comprise: shell, motor, flabellum and transmission shaft, wherein said motor and flabellum lay respectively in the intake grill and exhaust outlet at shell two ends, and are connected by transmission shaft, it is characterized in that: described air outlet of casing top is provided with rain shade device.
2. negative-pressure air fan according to claim 1, it is characterized in that: the cross section of described rain shade device is circular arc.
3. negative-pressure air fan according to claim 2, it is characterized in that: the length of described rain shade device is not less than the radius of exhaust outlet.
4. negative-pressure air fan according to claim 1, it is characterized in that: described rain shade device and negative-pressure air fan air outlet of casing are one-body molded.
5. negative-pressure air fan according to claim 1, it is characterized in that: described rain shade device and negative-pressure air fan fit together after moulding respectively.
6. negative-pressure air fan according to claim 5, it is characterized in that: the arc length of described rain shade device and air outlet of casing bound fraction is not less than 1/3rd of exhaust outlet girth.
7. negative-pressure air fan according to claim 5, it is characterized in that: described rain shade device is thickened material.
8. negative-pressure air fan according to claim 5, it is characterized in that: the hardness of described rain shade device material is greater than the hardness of negative-pressure air fan shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105362955A CN103104515A (en) | 2012-12-13 | 2012-12-13 | Negative-pressure fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105362955A CN103104515A (en) | 2012-12-13 | 2012-12-13 | Negative-pressure fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103104515A true CN103104515A (en) | 2013-05-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105362955A Pending CN103104515A (en) | 2012-12-13 | 2012-12-13 | Negative-pressure fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103104515A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103924542A (en) * | 2014-05-12 | 2014-07-16 | 苗润琪 | Snow clearing device used for preventing road snow accumulation |
| CN111997921A (en) * | 2020-07-31 | 2020-11-27 | 江苏久高电子科技有限公司 | High-temperature fan with air circulation cooling function |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60142098A (en) * | 1983-12-28 | 1985-07-27 | Toshiba Corp | Motor fan |
| CN2051686U (en) * | 1989-08-15 | 1990-01-24 | 周心贤 | High efficiency, low pressure axial flow ventilator |
| CN2499604Y (en) * | 2001-06-29 | 2002-07-10 | 曾家丰 | Struture improvement of exhaust fan |
| CN2864176Y (en) * | 2005-12-26 | 2007-01-31 | 潘玉明 | Exhaust fan for kitchen |
-
2012
- 2012-12-13 CN CN2012105362955A patent/CN103104515A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60142098A (en) * | 1983-12-28 | 1985-07-27 | Toshiba Corp | Motor fan |
| CN2051686U (en) * | 1989-08-15 | 1990-01-24 | 周心贤 | High efficiency, low pressure axial flow ventilator |
| CN2499604Y (en) * | 2001-06-29 | 2002-07-10 | 曾家丰 | Struture improvement of exhaust fan |
| CN2864176Y (en) * | 2005-12-26 | 2007-01-31 | 潘玉明 | Exhaust fan for kitchen |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103924542A (en) * | 2014-05-12 | 2014-07-16 | 苗润琪 | Snow clearing device used for preventing road snow accumulation |
| CN111997921A (en) * | 2020-07-31 | 2020-11-27 | 江苏久高电子科技有限公司 | High-temperature fan with air circulation cooling function |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130515 |