CN212155227U - Novel high negative pressure variable frequency fan for building cultivation - Google Patents
Novel high negative pressure variable frequency fan for building cultivation Download PDFInfo
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- CN212155227U CN212155227U CN202020742910.8U CN202020742910U CN212155227U CN 212155227 U CN212155227 U CN 212155227U CN 202020742910 U CN202020742910 U CN 202020742910U CN 212155227 U CN212155227 U CN 212155227U
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- wind collector
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- butterfly door
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Abstract
The invention provides a novel high-negative-pressure variable-frequency fan for building cultivation, which comprises a wind collector, wherein the wind collector is provided with a wind collecting opening, the back surface of the wind collector is square, the front surface of the wind collector is provided with an annular rectifying ring, four edges of the back surface of the wind collector are streamline-shaped, gathered and extend to the edge of the rectifying ring, the center of the interior of the wind collector is fixedly connected with a variable-frequency motor, an output shaft of the variable-frequency motor is connected with a fan blade, the edge of one tilted side of the fan blade is provided with sawteeth, the rectifying ring of the wind collector is connected with an annular shell, the upper part of the annular shell is connected with a circular-table-shaped annular frame, the top of the annular frame is connected with a butterfly-shaped door, and the. The utility model discloses can solve current product noise big, resistant negative pressure ability not enough, the not enough scheduling problem of leakproofness.
Description
Technical Field
The invention relates to the technical field of fans, in particular to a novel high-negative-pressure variable-frequency fan for building cultivation.
Background
The resistant negative pressure ability of traditional fan is poor, increases to when a certain point when breeding the inside and outside static pressure difference of house, and the amount of wind can attenuate sharply, causes to breed the whole ventilation of house not enough. The traditional fan has high rotating speed and large noise when running in a high negative pressure region. The traditional fan is not sealed enough, and the air current backward flow is big, and the air current backward flow is more obvious in high negative pressure environment.
Disclosure of Invention
In order to solve the technical problems, the invention is realized by the following technical scheme:
a novel high-negative-pressure variable-frequency fan for building cultivation comprises a wind collector, wherein the wind collector is provided with a wind collecting opening, the back surface of the wind collector is square, the front surface of the wind collector is an annular rectifying ring, four edges of the back surface of the wind collector are all in a streamline shape and are gathered together to extend to the edge of the rectifying ring, a variable-frequency motor is fixedly connected to the center inside the wind collector, an output shaft of the variable-frequency motor is connected with a fan blade, sawteeth are arranged on the edge of one tilted side of the fan blade, a plurality of fixing fins are uniformly distributed on the variable-frequency motor in a circular shape, a plurality of threaded holes are formed in the vertical direction of the top of each fixing fin, through holes are reserved at corresponding positions of the wind collector, bolts penetrate through the through holes to be in threaded connection with the threaded holes, the rectifying ring of the wind collector is connected with an annular shell, the upper part of the annular shell is connected with a circular platform-shaped ring frame, two butterfly door plant both ends fixed connection is on the ring frame, two the butterfly door plant articulates together, each butterfly door plant middle part all connects the one end of a extension spring, the other end of extension spring all fixed connection is at the ring frame edge.
Preferably, the material of the wind collector is glass fiber reinforced plastic.
Preferably, the butterfly door plate is made of a PP honeycomb plate.
Compared with the prior art, the invention has the beneficial effects that: 1. due to the fact that the cultivation density of the building cultivation with the super-strong negative pressure resistance is large, the cultivation requirement can be met only by needing larger ventilation quantity, the larger ventilation quantity means that higher negative pressure is needed, and a fan of the building is specially designed to meet the requirement of high negative pressure; 2. the structure of the wind collector is specially designed, and the noise-reducing sawtooth fan blades meet the requirements of large wind quantity and low noise; 3. the butterfly door made of special PP honeycomb plate material is adopted for preventing airflow from flowing back, and a special tension spring is arranged on the butterfly door in the structure to prevent the butterfly door from falling to one side to influence the tightness.
Drawings
The invention is described in further detail below with reference to the following figures and embodiments:
FIG. 1 is a schematic perspective view of the present invention;
fig. 2 is a schematic diagram of the explosive structure of the present invention.
Detailed Description
The invention is described in further detail below with reference to the following detailed description and accompanying drawings:
a novel high negative pressure variable frequency fan for building cultivation comprises a wind collector 1, wherein the wind collector 1 is provided with a wind collecting opening 101, the back surface of the wind collector 1 is square, an annular rectifying ring 102 is arranged on the front surface of the wind collector 1, four edges of the back surface of the wind collector 1 are streamline and gathered to extend to the edge of the rectifying ring 102, a variable frequency motor 2 is fixedly connected to the center of the inside of the wind collector 1, an output shaft of the variable frequency motor 2 is connected with a fan blade 3, sawteeth 301 are arranged on the edge of one tilted side of the fan blade 3, the arrangement of the sawteeth 301 can reduce noise and meet the requirements of large air volume and low noise, a plurality of fixed fins 201 are circularly and uniformly distributed on the variable frequency motor 2, a plurality of threaded holes 202 are arranged in the vertical direction of the top of each fixed fin 201, through holes 103 are reserved at corresponding positions of the wind collector 1, bolts pass through the through holes 103 and are in threaded connection with the threaded holes, circular truncated cone form ring frame 5 is connected on 4 upper portions of cyclic annular shell, butterfly door 6 is connected at 5 tops of ring frame, butterfly door 6 is two semicircle butterfly door plant 601 and pieces together can be with the sealed circle in 5 tops of ring frame, two butterfly door plant 601 both ends fixed connection is on ring frame 5, two butterfly door plant 601 articulates together, each butterfly door plant 601 middle part all connects the one end of an extension spring 602, the equal fixed connection of the other end of extension spring 602 is at 5 edges of ring frame.
Furthermore, the wind collector 1 is made of glass fiber reinforced plastic, and only 1/4-1/5 of carbon steel is used according to the relative density of the glass fiber reinforced plastic being 1.5-2.0, but the tensile strength is close to or even exceeds that of carbon steel, and the specific strength can be compared with high-grade alloy steel. The glass fiber reinforced plastic composite material is also a good corrosion-resistant material, and has good resistance to atmosphere, water, acid, alkali and salt with common concentration, and various corrosive gases and liquids.
Furthermore, the butterfly door plates 601 are made of PP cellular boards, the PP cellular boards are light and thin, when the fan works, the butterfly door is blown open under the action of wind force, the two butterfly door plates 601 are attached together, the ventilation volume of the fan is ensured to the maximum extent, the efficiency of the fan is improved, and the waste of mechanical energy is reduced; the butterfly door closes the state under furthest separation air backward flow, plays the heat preservation effect winter, and when negative-pressure air fan stopped working, under the effect of extension spring 602, butterfly door 6 self-closing.
The above detailed description of the embodiments of the present invention is provided as an example, and the present invention is not limited to the above described embodiments, and equivalent modifications of the present invention are within the scope of the present invention.
Claims (3)
1. The novel high-negative-pressure variable-frequency fan for building cultivation is characterized by comprising a wind collector (1), wherein the wind collector (1) is provided with a wind collecting opening (101), the back surface of the wind collector (1) is square, the front surface of the wind collector (1) is an annular rectifying ring (102), four edges of the back surface of the wind collector (1) are streamline and gathered to extend to the edge of the rectifying ring (102), the center of the interior of the wind collector (1) is fixedly connected with a variable-frequency motor (2), an output shaft of the variable-frequency motor (2) is connected with a fan blade (3), sawteeth (301) are arranged on the edge of the upwarping side of the fan blade (3), a plurality of fixing fins (201) are uniformly distributed on the variable-frequency motor (2) in a circular manner, a plurality of threaded holes (202) are arranged in the vertical direction at the top of each fixing fin (201), through holes (103) are reserved at corresponding positions of the wind collector (1), and bolts pass through, annular shell (4) is located to connect in collection wind ware (1) fairing (102), round platform form ring frame (5) is connected on annular shell (4) upper portion, butterfly door (6) are connected at ring frame (5) top, butterfly door (6) are two half-circle butterfly door plant (601) piece together can be with the sealed circle in ring frame (5) top, two butterfly door plant (601) both ends fixed connection is on ring frame (5), two butterfly door plant (601) articulate together, each the one end of an extension spring (602) is all connected at butterfly door plant (601) middle part, the equal fixed connection in other end of extension spring (602) is at ring frame (5) edge.
2. The novel high-negative-pressure variable-frequency fan for building cultivation according to claim 1, wherein the wind collector (1) is made of glass fiber reinforced plastic.
3. The novel high-negative-pressure variable-frequency fan for building cultivation according to claim 1, wherein the butterfly door panel (601) is made of a PP cellular board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020742910.8U CN212155227U (en) | 2020-05-08 | 2020-05-08 | Novel high negative pressure variable frequency fan for building cultivation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020742910.8U CN212155227U (en) | 2020-05-08 | 2020-05-08 | Novel high negative pressure variable frequency fan for building cultivation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212155227U true CN212155227U (en) | 2020-12-15 |
Family
ID=73709755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020742910.8U Active CN212155227U (en) | 2020-05-08 | 2020-05-08 | Novel high negative pressure variable frequency fan for building cultivation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212155227U (en) |
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2020
- 2020-05-08 CN CN202020742910.8U patent/CN212155227U/en active Active
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