CN114754026A - Ceiling fan and flow guide device for ceiling fan - Google Patents
Ceiling fan and flow guide device for ceiling fan Download PDFInfo
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- CN114754026A CN114754026A CN202210514414.0A CN202210514414A CN114754026A CN 114754026 A CN114754026 A CN 114754026A CN 202210514414 A CN202210514414 A CN 202210514414A CN 114754026 A CN114754026 A CN 114754026A
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- cavity
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- 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
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially adapted for elastic fluid pumps
- F04D29/545—Ducts
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- General Engineering & Computer Science (AREA)
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Abstract
The invention relates to a ceiling fan which comprises a fan body, wherein the fan body comprises an upper air inlet, a lower air inlet and a flow guide device, the flow guide device comprises an air inlet cavity, an accelerating cavity, an air outlet lower cavity and an air outlet upper cavity, the lower end of the air inlet cavity is a first cavity opening, the upper end of the air inlet cavity is a second cavity opening, the first cavity opening is positioned above the upper air inlet, and the cross section of the air inlet cavity is gradually reduced from the first cavity opening to the second cavity opening; the lower end of the accelerating cavity is provided with a third cavity opening, the upper end of the accelerating cavity is provided with a fourth cavity opening, the third cavity opening is communicated with the second cavity opening, and the side wall of the accelerating cavity is provided with a plurality of adsorption air holes; the lower end of the air outlet lower cavity is a fifth cavity opening, the upper end of the air outlet lower cavity is a sixth cavity opening, the fifth cavity opening is communicated with the fourth cavity opening, and the cross section of the air outlet lower cavity is gradually increased from the fifth cavity opening to the sixth cavity opening; the air outlet upper cavity is of a cone-shaped structure, the air outlet upper cavity is arranged above the sixth cavity, and the cone top of the air outlet upper cavity is opposite to the sixth cavity. Compared with the prior art, the ceiling fan has high circulation efficiency.
Description
Technical Field
The invention relates to the technical field of fans, in particular to a ceiling fan and a flow guide device for the ceiling fan.
Background
Along with the popularization of the environmental protection concept, a plurality of families and public places can be provided with ceiling fans to assist the air conditioner to improve the air flow. A ceiling fan is provided with a positive and negative switch. In summer, the forward and reverse switches are set to be in the forward direction, so that the ceiling fan blades rotate in the forward direction, air can be supplied downwards, and the wind sense is warm, soft and cool; an air conditioner may be assisted in an air conditioned room to increase the flow of cool air. In winter, the forward and reverse switches are set to be reverse, the ceiling fan blades rotate reversely, the cold air sinking indoors can be pumped upwards, the rising hot air is pressed downwards, the air circulation is increased, and indoor people cannot feel windy.
However, when the furred ceiling fan was established to the reverse direction, furred ceiling fan flabellum antiport, bloied towards the ceiling, and the furred ceiling fan is nearer from the ceiling usually, and then the air that the furred ceiling fan sent out receives blockking of ceiling easily, leads to certain loss to appear in the air of backward flow, and the air that the furred ceiling fan sent out moves towards the ceiling perpendicularly, and the wind of following the ceiling backward flow is because the angle undersize of reflection, is difficult to spread indoor space all around to lead to the circulation inefficiency.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the ceiling fan which can effectively guide air and improve the air circulation efficiency.
The invention is realized by the following technical scheme: a ceiling fan comprises a fan body, wherein the fan body comprises an upper air inlet, a lower air inlet and a flow guide device, the flow guide device comprises an air inlet cavity, an accelerating cavity, an air outlet lower cavity and an air outlet upper cavity, the lower end of the air inlet cavity is a first cavity opening, the upper end of the air inlet cavity is a second cavity opening, the first cavity opening is positioned above the upper air inlet, and the cross section of the air inlet cavity is gradually reduced from the first cavity opening to the second cavity opening; the lower end of the acceleration cavity is provided with a third cavity opening, the upper end of the acceleration cavity is provided with a fourth cavity opening, the third cavity opening is communicated with the second cavity opening, and the side wall of the acceleration cavity is provided with a plurality of adsorption air holes; the lower end of the air outlet lower cavity is a fifth cavity opening, the upper end of the air outlet lower cavity is a sixth cavity opening, the fifth cavity opening is communicated with the fourth cavity opening, and the cross section of the air outlet lower cavity is gradually increased from the fifth cavity opening to the sixth cavity opening; the air outlet upper cavity is of a cone-shaped structure, the air outlet upper cavity is arranged above the sixth cavity, and the cone top of the air outlet upper cavity is opposite to the sixth cavity.
Compared with the prior art, the ceiling fan provided by the invention has the advantages that air is subjected to double circulation through the flow guide device, and the circulation efficiency of indoor air is improved. In addition, the gas entering the accelerating cavity flows towards the air outlet cavity, and the inverted cone space formed by the air outlet upper cavity and the air outlet lower cavity adapts to hydromechanics, so that the gas in the air outlet cavity flows and diffuses towards the periphery, the auxiliary gas returns to the indoor space in the horizontal movement direction, and the diffusion range of the gas can be enlarged.
Furthermore, a protective net is covered on the adsorption air hole.
Further, the accelerating cavity is a folded tube.
Furthermore, the adsorption air holes are uniformly distributed on the accelerating cavity in a surrounding mode.
Based on the same conception, the invention also provides a flow guide device for the ceiling fan, wherein the flow guide device comprises an air inlet cavity, an accelerating cavity, an air outlet lower cavity and an air outlet upper cavity, wherein the lower end of the air inlet cavity is provided with a first cavity opening, the upper end of the air inlet cavity is provided with a second cavity opening, and the cross section of the air inlet cavity is gradually reduced from the first cavity opening to the second cavity opening; the lower end of the acceleration cavity is provided with a third cavity opening, the upper end of the acceleration cavity is provided with a fourth cavity opening, the third cavity opening is communicated with the second cavity opening, and the side wall of the acceleration cavity is provided with a plurality of adsorption air holes; the lower end of the air outlet lower cavity is a fifth cavity opening, the upper end of the air outlet lower cavity is a sixth cavity opening, the fifth cavity opening is communicated with the fourth cavity opening, and the cross section of the air outlet lower cavity is gradually increased from the fifth cavity opening to the sixth cavity opening; the air outlet upper cavity is of a conical structure, the air outlet upper cavity is arranged above the sixth cavity, and the conical top of the air outlet upper cavity is opposite to the sixth cavity.
Furthermore, a protective net is covered on the adsorption air hole.
Further, the accelerating cavity is a folded tube.
Furthermore, the adsorption air holes are uniformly distributed on the accelerating cavity in a surrounding mode.
Drawings
Fig. 1 is a schematic structural view of a ceiling fan of an embodiment;
fig. 2 is a schematic diagram of the movement of air when the pending fan of the embodiment performs reverse air supply.
The technical scheme of the invention is described in detail in the following with reference to the accompanying drawings.
Detailed Description
The invention changes the gas flow speed through the channels with different cross-sectional areas, and utilizes the part with high gas flow speed to adsorb the air around the channel to promote the second circulation of the air, thereby realizing the improvement of the air circulation rate with low energy and high efficiency. The following examples are intended to illustrate the details.
Please refer to fig. 1, which is a schematic structural diagram of the ceiling fan of the present embodiment. The ceiling fan comprises a fan body 10, a suspension rod 20 and a flow guide device 30, wherein the fan body 10 is fixedly connected with one end of the suspension rod 20, the other end of the suspension rod 20 is perpendicular to a ceiling of an indoor environment and is fixedly connected with the ceiling, and the fan body 10 is suspended on the indoor ceiling through the suspension rod 20; the air guide device 30 is disposed between the fan body 10 and the ceiling, and guides air sent by the fan body 10 and forms a dual cycle of indoor air flow.
Specifically, one end of the fan body 10 facing the ceiling is an upper air inlet, one end of the fan body 10 facing the ground is a lower air inlet, the fan body 10 is provided with a forward-reverse switch (not shown), when the forward-reverse switch is set to be in a forward direction, the blades of the fan body 10 rotate in the forward direction to drive air in the indoor space to flow from top to bottom, and flowing air in the indoor space enters from the upper air inlet of the fan body 10 and is sent out through the lower air inlet of the fan body 10; when the forward and reverse switches are set to be in reverse directions, the blades of the fan body 10 rotate in reverse directions to drive the air in the indoor space to flow from bottom to top, and the flowing air in the indoor space enters from the lower air inlet of the fan body 10, is sent out through the upper air inlet of the fan body 10, and then returns to the indoor space through the flow guide device 30.
The flow guide device 30 comprises an air inlet cavity 31, an accelerating cavity 32 and an air outlet cavity 33 which are sequentially arranged from bottom to top, wherein the air inlet cavity 31 is used for receiving flowing air sent out by an air inlet of the fan body 10; the acceleration cavity 32 is communicated with the air inlet cavity 31, and the acceleration cavity 32 is used for receiving the flowing air sent by the air inlet cavity 31 and increasing the flowing speed of the flowing air sent by the air inlet cavity 31; the air outlet cavity 33 is communicated with the acceleration cavity 32, and the air outlet cavity 33 is used for receiving the flowing air sent out by the acceleration cavity 32 and enabling the received flowing air to be directionally returned to the indoor space.
More specifically, the air inlet cavity 31 may be a truncated cone-shaped cavity, the lower end of the air inlet cavity 31 facing the ground is a first cavity opening, the upper end opposite to the lower end is a second cavity opening, the area of the first cavity opening of the air inlet cavity 31 is larger than that of the second cavity opening, or the cross-sectional area of the cavity of the air inlet cavity 31 is gradually reduced from the first cavity opening to the second cavity opening, the first cavity opening is arranged above the upper air opening of the fan body 10 and is opposite to the upper air opening of the fan body 10, so that the air sent out from the upper air opening of the fan body 10 can enter the air inlet cavity 31 from the first cavity opening.
The accelerating cavity 32 can be a cylindrical cavity, the lower end of the accelerating cavity 32 facing the ground is a third cavity, the upper end opposite to the lower end is a fourth cavity, and the third cavity is communicated with the second cavity of the air inlet cavity 31, so that the flowing air sent by the air inlet cavity 31 can enter the accelerating cavity 32 from the third cavity. The cavity cross-sectional area of the accelerating cavity 32 is smaller than the second opening of the air inlet cavity 31, so that the flow channel of the flowing air is narrowed, and the gas molecules of the flowing air are mutually squeezed, so that the gas flow speed is increased. The sidewall of the cavity of the acceleration cavity 32 is provided with a plurality of adsorption air holes 321, the adsorption air holes 321 are used as moving inlets of the air outside the acceleration cavity 32, when the air in the acceleration cavity 32 flows at a relatively high moving speed, the air pressure inside the acceleration cavity 32 is lower than the air pressure outside the acceleration cavity 32, and the air outside the acceleration cavity 32 moves in a direction of low air pressure, and can enter the acceleration cavity 32 through the adsorption air holes 321. In one embodiment, the number of the adsorption air holes 321 is 4, and the adsorption air holes are uniformly distributed around the axial direction of the acceleration cavity 32, and may be disposed in the middle of the cavity of the acceleration cavity 32. The number and distribution positions of the adsorption air holes 321 are not limited in this embodiment, and may be set according to the actual gas flow rate requirement in any specific implementation.
In a preferred embodiment, a protective net (not shown) is disposed at the adsorption air holes 321 on the sidewall of the acceleration chamber 32, and the protective net covers the adsorption air holes 321 to prevent particles such as flying insects and large particles of dust from being sucked into the acceleration chamber 32, and the particles sucked into the acceleration chamber 32 may return to the indoor space with the flowing air and then fall down onto indoor articles, which damages environmental sanitation and makes the inside of the acceleration chamber 32 difficult to clean.
In a preferred embodiment, the acceleration chamber 32 is a metal pleated tube. When the fan body 10 is used for forward air supply, the flow guide device 30 is not needed for air flow guide, and at the moment, the accelerating cavity 32 can be folded to enable the accelerating cavity 32 to be in a compressed state, so that the height of the flow guide device 30 is shortened upwards, and a sufficient space is reserved at an upper air inlet of the fan body 10 to increase the air inlet amount; when the fan body 10 is used for reverse air supply, the accelerating cavity 32 can be unfolded to enable the accelerating cavity 32 to be in an unfolded state, the height of the flow guide device 30 is extended downwards, and the first cavity opening of the air inlet cavity 31 is close to the upper air inlet of the fan body 10 to increase the air entering the air inlet cavity 31.
The air outlet cavity 33 includes an air outlet lower cavity 331 and an air outlet upper cavity 332 arranged from bottom to top, the air outlet lower cavity 331 is a truncated cone shaped cavity, the lower end of the air outlet lower cavity 331 facing the ground is a fifth cavity, the upper end opposite to the lower end is a sixth cavity, the area of the fifth cavity is smaller than that of the sixth cavity, or the cross-sectional area of the air outlet lower cavity 331 is gradually increased from the fifth cavity to the sixth cavity, and the fifth cavity is communicated with the fourth cavity of the acceleration cavity 32, so that the air sent out by the acceleration cavity 32 can enter the air outlet lower cavity 331 from the fifth cavity. The air outlet upper chamber 332 is of a cone-shaped structure, a cone top of the air outlet upper chamber 332 is opposite to the sixth cavity of the air outlet lower chamber 331, an air flow channel of the air outlet chamber 33 is formed by a cone side wall of the air outlet upper chamber 332 and a cavity side wall of the air outlet lower chamber 331 together, and an air outlet of the air outlet chamber 33 is formed by a cone bottom edge of the air outlet upper chamber 332 and the sixth cavity of the air outlet lower chamber 331 together.
Please refer to fig. 2, which is a schematic diagram of the air movement of the pending fan of the present embodiment when performing the reverse air supply. When the ceiling fan of this embodiment is used for reverse air supply, air in an indoor space enters the fan body 10 from a lower air inlet of the fan body 10, the fan body 10 sends out air in the indoor space from an upper air inlet of the fan body 10, flowing air flowing out from an upper air inlet of the fan body 10 enters the air inlet cavity 31 through the first cavity opening of the air inlet cavity 31 of the flow guide device 30, then moves to the second cavity opening of the air inlet cavity 31, then enters the acceleration cavity 32 through the third cavity opening communicated with the second cavity opening, then moves to the fourth cavity opening of the acceleration cavity 32, and then enters the air outlet lower cavity 331 of the air outlet cavity 33 through the fifth cavity opening communicated with the fourth cavity opening, and then under the guiding action of the air outlet lower cavity 331 and the air outlet upper cavity 332, the flowing air moves to an air outlet of the air outlet cavity 33 and returns to the indoor space in a horizontal movement direction, thereby forming a first circulation of air flow.
Because the cavity cross section of the air inlet cavity 31 is larger than the cavity cross section of the acceleration cavity 32, when the flowing air enters the acceleration cavity 32, the flowing air is accelerated due to the rapid narrowing of the channel, the air pressure of the air is reduced along with the increase of the flowing speed of the air, and the air pressure in the cavity of the acceleration cavity 32 is smaller than the air pressure outside the cavity, so that the adsorption air hole 321 on the side wall of the acceleration cavity 32 performs an adsorption action on the air outside the acceleration cavity 32, so that the external air moves towards the acceleration cavity 32 through the adsorption air hole 321, then moves to the fourth cavity opening of the acceleration cavity 32, then enters the air outlet lower cavity 331 of the air outlet cavity 33 through the fifth cavity opening communicated with the fourth cavity opening, and then under the guiding action of the air outlet lower cavity 331 and the air outlet upper cavity 332, the flowing air moves to the air outlet of the air outlet cavity 33 and returns to the indoor space in the horizontal moving direction, thereby forming a second circulation of air flow.
Compared with the prior art, the ceiling fan provided by the invention has the advantages that the air is subjected to double circulation through the flow guide device 30, and the circulation efficiency of indoor air is improved. In addition, the gas entering the accelerating cavity 32 flows towards the air outlet cavity 33, and the inverted cone space formed by the air outlet upper cavity 332 and the air outlet lower cavity 331 adapts to hydromechanics, so that the gas in the air outlet cavity 33 flows and diffuses around, and the auxiliary gas returns to the indoor space in the horizontal movement direction, thereby enlarging the diffusion range of the gas.
The present invention is not limited to the above-described embodiments, and various modifications and variations of the present invention are intended to be included within the scope of the claims and the equivalent technology of the present invention if they do not depart from the spirit and scope of the present invention.
Claims (8)
1. The utility model provides a ceiling fan, includes the fan body, the fan body includes wind gap and lower wind gap, its characterized in that: the air inlet device comprises an air inlet cavity, an acceleration cavity, an air outlet lower cavity and an air outlet upper cavity, wherein the lower end of the air inlet cavity is provided with a first cavity opening, the upper end of the air inlet cavity is provided with a second cavity opening, the first cavity opening is positioned above the upper air opening, and the cross section of the air inlet cavity is gradually reduced from the first cavity opening to the second cavity opening; the lower end of the acceleration cavity is provided with a third cavity opening, the upper end of the acceleration cavity is provided with a fourth cavity opening, the third cavity opening is communicated with the second cavity opening, and the side wall of the acceleration cavity is provided with a plurality of adsorption air holes; the lower end of the air outlet lower cavity is a fifth cavity opening, the upper end of the air outlet lower cavity is a sixth cavity opening, the fifth cavity opening is communicated with the fourth cavity opening, and the cross section of the air outlet lower cavity is gradually increased from the fifth cavity opening to the sixth cavity opening; the air outlet upper cavity is of a cone-shaped structure, the air outlet upper cavity is arranged above the sixth cavity, and the cone top of the air outlet upper cavity is opposite to the sixth cavity.
2. The ceiling fan of claim 1, wherein: and a protective net is covered on the adsorption air hole.
3. The ceiling fan of claim 1, wherein: the accelerating cavity is a folding tube.
4. The ceiling fan of claim 1, wherein: the adsorption air holes are uniformly distributed on the accelerating cavity in a surrounding mode.
5. The utility model provides a guiding device for furred ceiling fan which characterized in that: the flow guide device comprises an air inlet cavity, an acceleration cavity, an air outlet lower cavity and an air outlet upper cavity, wherein the lower end of the air inlet cavity is provided with a first cavity opening, the upper end of the air inlet cavity is provided with a second cavity opening, and the cross section of the air inlet cavity is gradually reduced from the first cavity opening to the second cavity opening; the lower end of the acceleration cavity is provided with a third cavity opening, the upper end of the acceleration cavity is provided with a fourth cavity opening, the third cavity opening is communicated with the second cavity opening, and the side wall of the acceleration cavity is provided with a plurality of adsorption air holes; the lower end of the air outlet lower cavity is a fifth cavity opening, the upper end of the air outlet lower cavity is a sixth cavity opening, the fifth cavity opening is communicated with the fourth cavity opening, and the cross section of the air outlet lower cavity is gradually increased from the fifth cavity opening to the sixth cavity opening; the air outlet upper cavity is of a conical structure, the air outlet upper cavity is arranged above the sixth cavity, and the conical top of the air outlet upper cavity is opposite to the sixth cavity.
6. The flow directing device of claim 5, wherein: and a protective net is covered on the adsorption air hole.
7. The flow directing device of claim 5, wherein: the accelerating cavity is a folding tube.
8. The flow directing device of claim 5, wherein: the adsorption air holes are uniformly distributed on the accelerating cavity in a surrounding mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210514414.0A CN114754026A (en) | 2022-05-12 | 2022-05-12 | Ceiling fan and flow guide device for ceiling fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210514414.0A CN114754026A (en) | 2022-05-12 | 2022-05-12 | Ceiling fan and flow guide device for ceiling fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114754026A true CN114754026A (en) | 2022-07-15 |
Family
ID=82334315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210514414.0A Pending CN114754026A (en) | 2022-05-12 | 2022-05-12 | Ceiling fan and flow guide device for ceiling fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114754026A (en) |
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2022
- 2022-05-12 CN CN202210514414.0A patent/CN114754026A/en active Pending
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