Ceiling fan and flow guiding device for a ceiling fan

Abstract

The present application relates to a kind of ceiling fan, including fan body, fan body includes upper air port and lower air port, also include flow guide device, flow guide device includes air inlet chamber, acceleration chamber, air outlet lower chamber and air outlet upper chamber, wherein, the lower end of air inlet chamber is first chamber mouth, upper end is second chamber mouth, first chamber mouth is located above the upper air port, the cross section of air inlet chamber gradually reduces from first chamber mouth to second chamber mouth;The lower end of acceleration chamber is third chamber mouth, upper end is fourth chamber mouth, third chamber mouth is communicated with the second chamber mouth, and the side wall of acceleration chamber is equipped with several adsorption air hole;The lower end of air outlet lower chamber is fifth chamber mouth, upper end is sixth chamber mouth, fifth chamber mouth is communicated with the fourth chamber mouth, and the cross section of air outlet lower chamber gradually increases from fifth chamber mouth to sixth chamber mouth;Air outlet upper chamber is conical body structure, air outlet upper chamber is set above the sixth chamber mouth, and the top of air outlet upper chamber is opposite to the sixth chamber mouth.Relative to prior art, the circulation efficiency of the ceiling fan of the present application is high.

Description

Technical Field

[0001] This invention relates to the field of fan technology, and in particular to a ceiling fan and a flow guiding device for the ceiling fan. Background Technology

[0002] With the promotion of environmental protection concepts, many homes and public places install ceiling fans to assist air conditioners in improving air circulation. One type of ceiling fan has a forward / reverse switch. In summer, setting the switch to forward causes the fan blades to rotate clockwise, blowing air downwards with a gentle, cool breeze; in air-conditioned rooms, this can assist the air conditioner in increasing the flow of cool air. In winter, setting the switch to reverse causes the fan blades to rotate counter-clockwise, drawing down cool air and pushing down warm air, increasing air circulation without the occupants feeling a draft.

[0003] However, when the ceiling fan is set to reverse, the fan blades rotate in the opposite direction and blow air towards the ceiling. Since the ceiling fan is usually close to the ceiling, the air delivered by the ceiling fan is easily blocked by the ceiling, resulting in some loss of the returning air. In addition, the air delivered by the ceiling fan moves vertically towards the ceiling, and the air returning from the ceiling is difficult to diffuse into the surrounding indoor space due to the small reflection angle, resulting in low circulation efficiency. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings and deficiencies of the prior art and provide a ceiling fan that can effectively guide airflow and improve air circulation efficiency.

[0005] This invention is achieved through the following technical solution: a ceiling fan, comprising a fan body, the fan body including an upper air outlet and a lower air outlet, and a flow guiding device, the flow guiding device including an air inlet chamber, an acceleration chamber, a lower air outlet chamber, and an upper air outlet chamber, wherein the lower end of the air inlet chamber is a first cavity opening and the upper end is a second cavity opening, the first cavity opening is located above the upper air outlet, and the cross-section of the air inlet chamber gradually decreases from the first cavity opening to the second cavity opening; the lower end of the acceleration chamber is a third cavity opening and the upper end is a fourth cavity opening, the third cavity opening is connected to the second cavity opening, and the side wall of the acceleration chamber is provided with a plurality of adsorption pores; the lower end of the lower air outlet chamber is a fifth cavity opening and the upper end is a sixth cavity opening, the fifth cavity opening is connected to the fourth cavity opening, and the cross-section of the lower air outlet chamber gradually increases from the fifth cavity opening to the sixth cavity opening; the upper air outlet chamber has a cone-shaped structure, the upper air outlet chamber is located above the sixth cavity opening, and the cone apex of the upper air outlet chamber is opposite to the sixth cavity opening.

[0006] Compared to existing technologies, the ceiling fan provided by this invention uses a flow guiding device to achieve dual air circulation, thereby improving the indoor air circulation efficiency. Furthermore, the gas entering the acceleration chamber flows towards the outlet chamber. The inverted cone-shaped space formed by the upper and lower outlet chambers is adapted to fluid dynamics, facilitating gas flow and diffusion in the outlet chamber, thus aiding the gas to return to the indoor space in a horizontal direction and increasing the gas diffusion range.

[0007] Furthermore, the adsorption pores are covered with a protective net.

[0008] Furthermore, the acceleration chamber is a folded tube.

[0009] Furthermore, the adsorption pores are evenly distributed around the acceleration chamber.

[0010] Based on the same concept, the present invention also provides a flow guiding device for a ceiling fan, the flow guiding device comprising an air inlet chamber, an acceleration chamber, a lower air outlet chamber, and an upper air outlet chamber, wherein the lower end of the air inlet chamber is a first cavity opening and the upper end is a second cavity opening, and the cross-section of the air inlet chamber gradually decreases from the first cavity opening to the second cavity opening; the lower end of the acceleration chamber is a third cavity opening and the upper end is a fourth cavity opening, the third cavity opening is connected to the second cavity opening, and the side wall of the acceleration chamber is provided with a plurality of adsorption pores; the lower end of the lower air outlet chamber is a fifth cavity opening and the upper end is a sixth cavity opening, the fifth cavity opening is connected to the fourth cavity opening, and the cross-section of the lower air outlet chamber gradually increases from the fifth cavity opening to the sixth cavity opening; the upper air outlet chamber has a conical structure, the upper air outlet chamber is disposed above the sixth cavity opening, and the cone apex of the upper air outlet chamber is opposite to the sixth cavity opening.

[0011] Furthermore, the adsorption pores are covered with a protective net.

[0012] Furthermore, the acceleration chamber is a folded tube.

[0013] Furthermore, the adsorption pores are evenly distributed around the acceleration chamber. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the ceiling fan in the embodiment;

[0015] Figure 2 This is a schematic diagram of gas movement when the ceiling fan in the embodiment is performing reverse airflow.

[0016] The technical solution of the present invention will now be described in detail with reference to the accompanying drawings. Detailed Implementation

[0017] This invention modifies the gas flow velocity through channels with different cross-sectional areas, utilizing the high-velocity gas sections to adsorb surrounding air, thereby promoting a secondary air circulation and achieving a high-efficiency improvement in air circulation rate with low energy consumption. Specific examples are provided below.

[0018] Please see Figure 1 This is a structural schematic diagram of the ceiling fan in this embodiment. The ceiling fan includes a fan body 10, a suspension rod 20, and an air guiding device 30. The fan body 10 is fixedly connected to one end of the suspension rod 20, and the other end of the suspension rod 20 is perpendicular to the ceiling of the indoor environment and fixedly connected to the ceiling. The fan body 10 is suspended from the ceiling of the room by the suspension rod 20. The air guiding device 30 is disposed between the fan body 10 and the ceiling and is used to guide the air delivered by the fan body 10 and form a dual circulation of indoor air flow.

[0019] Specifically, the end of the fan body 10 facing the ceiling is the upper air inlet, and the end of the fan body 10 facing the ground is the lower air inlet. The fan body 10 is equipped with a forward / reverse switch (not shown). When the forward / reverse switch is set to forward, the blades of the fan body 10 rotate in the forward direction, causing the air in the indoor space to flow from top to bottom. The 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 / reverse switch is set to reverse, the blades of the fan body 10 rotate in the reverse direction, causing the air in the indoor space to flow from bottom to top. The air in the indoor space enters from the lower air inlet of the fan body 10 and is sent out through the upper air inlet of the fan body 10, and then returns to the indoor space through the air guide device 30.

[0020] The airflow guiding device 30 includes an air inlet chamber 31, an acceleration chamber 32, and an air outlet chamber 33 arranged sequentially from bottom to top. The air inlet chamber 31 is used to receive the flowing air delivered from the upper air outlet of the fan body 10. The acceleration chamber 32 is connected to the air inlet chamber 31 and is used to receive the flowing air delivered from the air inlet chamber 31 and increase the flow speed of the flowing air delivered from the air inlet chamber 31. The air outlet chamber 33 is connected to the acceleration chamber 32 and is used to receive the flowing air delivered from the acceleration chamber 32 and direct the received flowing air back to the indoor space.

[0021] More specifically, the air inlet cavity 31 can be a frustum-shaped cavity. The lower end of the air inlet cavity 31 facing the ground is the first cavity opening, and the upper end opposite to its lower end is the second cavity opening. The area of ​​the first cavity opening of the air inlet cavity 31 is larger than the area of ​​the second cavity opening, or the cross-sectional area of ​​the air inlet cavity 31 gradually decreases from the first cavity opening to the second cavity opening. The first cavity opening is located above the upper air outlet of the fan body 10 and is opposite to the upper air outlet of the fan body 10, so that the air delivered by the upper air outlet of the fan body 10 can enter the air inlet cavity 31 through the first cavity opening.

[0022] The acceleration chamber 32 can be a cylindrical cavity. The lower end of the acceleration chamber 32 facing the ground is the third opening, and the upper end opposite it is the fourth opening. The third opening is connected to the second opening of the air inlet chamber 31, allowing the flowing air from the air inlet chamber 31 to enter the acceleration chamber 32 through the third opening. The cross-sectional area of ​​the acceleration chamber 32 is smaller than the second opening of the air inlet chamber 31, narrowing the flow channel for the incoming air. This causes the gas molecules in the flowing air to compress against each other, increasing the gas velocity. Several adsorption pores 321 are provided on the side wall of the acceleration chamber 32. These adsorption pores 321 serve as inlets for the external air. When the air in the acceleration chamber 32 flows at a higher velocity, the internal air pressure is lower than the external air pressure. Therefore, the external air moves towards the area of ​​lower pressure and can enter the acceleration chamber 32 through the adsorption pores 321. In one specific embodiment, four adsorption pores 321 are provided and evenly distributed around the acceleration chamber 32 along its axial direction, and can be located in the middle of the acceleration chamber 32. The number and distribution of the adsorption pores 321 are not limited in this embodiment and can be set according to the actual gas flow rate requirements in any specific embodiment.

[0023] In a preferred embodiment, a protective net (not shown) is provided at the adsorption pores 321 on the side wall of the acceleration chamber 32. The protective net covers the adsorption pores 321 to prevent flying insects, large dust particles and other particles from being sucked into the acceleration chamber 32. Particles sucked into the acceleration chamber 32 may return to the indoor space with the flowing air and then fall onto indoor items, damaging the environmental hygiene. Furthermore, the interior of the acceleration chamber 32 is difficult to clean.

[0024] In a preferred embodiment, the acceleration chamber 32 is a metal folded tube. When the fan body 10 is used for forward airflow, the air guide device 30 is not required for airflow guidance. At this time, the acceleration chamber 32 can be folded to compress the acceleration chamber 32, shortening the height of the air guide device 30 upwards, and providing sufficient space at the upper airflow inlet of the fan body 10 to increase the amount of air entering. When the fan body 10 is used for reverse airflow, the acceleration chamber 32 can be unfolded to extend the acceleration chamber 32, lengthening the height of the air guide device 30 downwards, bringing the first cavity opening of the air inlet chamber 31 closer to the upper airflow inlet of the fan body 10, thereby increasing the amount of air entering the air inlet chamber 31.

[0025] The air outlet cavity 33 includes a lower air outlet cavity 331 and an upper air outlet cavity 332 arranged from bottom to top. The lower air outlet cavity 331 is a frustum-shaped cavity. The lower end of the lower air outlet cavity 331 facing the ground is the fifth cavity opening, and the upper end opposite to its lower end is the sixth cavity opening. The area of ​​the fifth cavity opening is smaller than the area of ​​the sixth cavity opening, or the cross-sectional area of ​​the lower air outlet cavity 331 gradually increases from the fifth cavity opening to the sixth cavity opening. The fifth cavity opening is connected to the fourth cavity opening of the acceleration cavity 32 so that the air delivered by the acceleration cavity 32 can enter the lower air outlet cavity 331 from the fifth cavity opening. The upper air outlet cavity 332 has a cone-shaped structure. The cone apex of the upper air outlet cavity 332 is opposite to the sixth cavity opening of the lower air outlet cavity 331. The cone sidewall of the upper air outlet cavity 332 and the cavity sidewall of the lower air outlet cavity 331 together form the air flow channel of the air outlet cavity 33. The bottom edge of the cone of the upper air outlet cavity 332 and the sixth cavity opening of the lower air outlet cavity 331 together form the air outlet of the air outlet cavity 33.

[0026] Please see Figure 2 This is a schematic diagram of the gas movement of the ceiling fan in this embodiment when it performs reverse airflow. When the ceiling fan in this embodiment performs reverse airflow, the air in the room enters the fan body 10 from the lower air inlet. The fan body 10 then sends the air out from its upper air inlet. The flowing air flowing out from the upper air inlet of the fan body 10 enters the air inlet 31 through the first cavity of the air inlet 31 of the guide device 30, then moves to the second cavity of the air inlet 31, and then enters the acceleration cavity 32 through the third cavity connected to the second cavity. It then moves to the fourth cavity of the acceleration cavity 32, and then enters the lower air outlet cavity 331 of the air outlet cavity 33 through the fifth cavity connected to the fourth cavity. Then, under the guidance of the lower air outlet cavity 331 and the upper air outlet cavity 332, the flowing air moves to the air outlet of the air outlet cavity 33 and returns to the room in a horizontal direction, forming the first cycle of airflow in this process.

[0027] Since the cross-section of the air inlet cavity 31 is larger than that of the acceleration cavity 32, the flowing air is accelerated when it enters the acceleration cavity 32 due to the rapid narrowing of the channel. The gas pressure decreases as the gas flow speed increases, so the gas pressure inside the acceleration cavity 32 is less than the gas pressure outside the cavity. As a result, the adsorption pores 321 on the side wall of the acceleration cavity 32 adsorb the air outside the acceleration cavity 32, causing the outside air to move into the acceleration cavity 32 through the adsorption pores 321. Then, it moves to the fourth cavity opening of the acceleration cavity 32, and then enters the lower air outlet cavity 331 of the air outlet cavity 33 through the fifth cavity opening connected to the fourth cavity opening. Then, under the guidance of the lower air outlet cavity 331 and the upper air outlet cavity 332, the flowing air moves to the air outlet of the air outlet cavity 33 and returns to the indoor space in a horizontal direction. In this process, a second circulation of air flow is formed.

[0028] Compared to existing technologies, the ceiling fan of this invention uses a flow guide device 30 to achieve dual air circulation, improving the indoor air circulation efficiency. Furthermore, the gas entering the acceleration chamber 32 flows towards the outlet chamber 33. The inverted cone-shaped space formed by the upper outlet chamber 332 and the lower outlet chamber 331 is adapted to fluid dynamics, facilitating the flow of gas in the outlet chamber 33 and its diffusion in all directions. This helps the gas return to the indoor space in a horizontal direction, thereby increasing the gas diffusion range.

[0029] This invention is not limited to the above-described embodiments. If any modifications or variations to this invention do not depart from the spirit and scope of this invention, and if such modifications and variations fall within the scope of the claims and equivalent technologies of this invention, then this invention also intends to include such modifications and variations.

Claims

1. A ceiling fan, comprising a fan body, the fan body including an upper air outlet and a lower air outlet, characterized in that: It also includes a flow guiding device, which comprises an air inlet chamber, an acceleration chamber, a lower air outlet chamber, and an upper air outlet chamber. The lower end of the air inlet chamber is a first opening, and the upper end is a second opening. The first opening is located above the upper air outlet, and the cross-section of the air inlet chamber gradually decreases from the first opening to the second opening. The lower end of the acceleration chamber is a third opening, and the upper end is a fourth opening. The third opening is connected to the second opening, and the sidewall of the acceleration chamber has several adsorption pores. The lower end of the lower air outlet chamber is a fifth opening, and the upper end is a sixth opening. The fifth opening is connected to the fourth opening, and the cross-section of the lower air outlet chamber gradually increases from the fifth opening to the sixth opening. The upper air outlet chamber has a cone-shaped structure, is located above the sixth opening, and the cone apex of the upper air outlet chamber is opposite to the sixth opening.

2. The ceiling fan according to claim 1, characterized in that: The adsorption pores are covered with a protective net.

3. The ceiling fan according to claim 1, characterized in that: The acceleration chamber is a folded tube.

4. The ceiling fan according to claim 1, characterized in that: The adsorption pores are evenly distributed around the acceleration chamber.

5. A flow guiding device for a ceiling fan, characterized in that: The air guiding device includes an air inlet chamber, an acceleration chamber, a lower air outlet chamber, and an upper air outlet chamber. The lower end of the air inlet chamber is a first opening, and the upper end is a second opening; the cross-section of the air inlet chamber gradually decreases from the first opening to the second opening. The lower end of the acceleration chamber is a third opening, and the upper end is a fourth opening; the third opening is connected to the second opening, and the sidewall of the acceleration chamber has several adsorption pores. The lower end of the lower air outlet chamber is a fifth opening, and the upper end is a sixth opening; the fifth opening is connected to the fourth opening, and the cross-section of the lower air outlet chamber gradually increases from the fifth opening to the sixth opening. The upper air outlet chamber has a conical structure, is located above the sixth opening, and the apex of the upper air outlet chamber is opposite to the sixth opening.

6. The flow guiding device according to claim 5, characterized in that: The adsorption pores are covered with a protective net.

7. The flow guiding device according to claim 5, characterized in that: The acceleration chamber is a folded tube.

8. The flow guiding device according to claim 5, characterized in that: The adsorption pores are evenly distributed around the acceleration chamber.

Images