Fan capable of discharging air from two sides and recycling air

Abstract

A fan capable of discharging air from two sides and recycling air comprises a body, an air blowing fan wheel and an axial flow fan wheel, a first containing space is formed in the body, the air blowing fan wheel is arranged in the first containing space and comprises a first end and a second end which are perpendicularly intersected with the axis of the air blowing fan wheel, and the body is provided with an air inlet corresponding to the first end. A first air outlet is formed in the side portion corresponding to the blowing fan wheel, a second air outlet is formed in the second end portion corresponding to the blowing fan wheel, the axial flow fan wheel is connected to the second end portion and used for generating air from the outer side of the second air outlet to the interior of the first containing space, and an air return plate is arranged on the outer side, corresponding to the second air outlet, of the body. The fan can generate radial flow wind and outward axial flow wind, and therefore the fan can be used for two purposes at the same time. Moreover, the air return plate, the second air outlet, the axial flow fan wheel and the blowing fan wheel are combined, so that the outward axial flow air can be blown out from the first air outlet after being recycled, and the air volume of the radial flow air can be increased.

Description

Technical Field

[0001] This invention relates to fans, and more particularly to a fan that emits air from both sides and can recycle air. Background Technology

[0002] Fans are divided into axial fans and radial fans, with radial fans also known as centrifugal fans. Existing fans typically only exhaust air from one side, resulting in low airflow efficiency.

[0003] Therefore, the present invention provides a fan with air outlets on both sides and the ability to recycle air. Summary of the Invention

[0004] The purpose of this invention is to provide a fan with air outlets on both sides and recyclable airflow, wherein the air generated by the fan can be used for two purposes simultaneously, and one airflow can be recycled to increase the airflow from the other airflow.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A fan with side-mounted air outlets and recirculating air includes a body, a blower fan impeller, and an axial fan impeller. A first accommodating space is formed within the body, and the blower fan impeller is disposed within the first accommodating space. The blower fan impeller includes a first end and a second end perpendicular to its axis. The body has an air inlet corresponding to the first end, a first air outlet on the side of the body corresponding to the blower fan impeller, and a second air outlet corresponding to the second end. When the blower fan impeller rotates, it generates radial airflow from the air inlet to the first air outlet and outward axial airflow from the air inlet to the second air outlet. The axial fan impeller is connected to the second end and generates airflow from the outside of the second air outlet into the first accommodating space. A return air plate perpendicular to the axis is provided on the outside of the body corresponding to the second air outlet.

[0006] In some embodiments, the return air plate includes a front side and a back side, the front side being opposite to the main body, the back side being provided with a heat-conducting plate, a second accommodating space being formed between the heat-conducting plate and the return air plate, the second accommodating space being provided with a semiconductor cooling chip, the semiconductor cooling chip including a cold end and a hot end, the cold end being attached to the heat-conducting plate, and the hot end being attached to the return air plate.

[0007] In some embodiments, the front of the return air plate includes a reflective portion, which is a concave spherical surface.

[0008] In some embodiments, a gap is provided between the return air plate and the main body, and the gap is connected to the second air outlet.

[0009] In some embodiments, the blades of the axial fan wheel extend into the interval.

[0010] In some embodiments, the blower fan impeller includes a hub and blower fan blades surrounding the outer periphery of the hub, the axis of the axial fan impeller coincides with the axis of the blower fan impeller, and the outer diameter of the axial fan impeller is smaller than the outer diameter of the blower fan impeller hub.

[0011] In some embodiments, the axial fan wheel is formed at the hub end of the blower fan wheel.

[0012] In some embodiments, the return air plate is provided with multiple connecting rods, which are detachably connected to the main body.

[0013] Compared with the prior art, the present invention has at least the following beneficial effects: The aforementioned fan can generate both radial and outward axial airflow, thus enabling it to be used for both purposes simultaneously. Furthermore, the combination of the return air plate, the second air outlet, the axial fan impeller, and the blower fan impeller allows the outward axial airflow to be collected and blown out from the first air outlet, thereby increasing the volume of the radial airflow. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a fan in one embodiment; Figure 2 This is a schematic diagram showing the fan from another perspective. Figure 3 An exploded view of the fan; Figure 4 This is a bottom view of the fan; Figure 5 for Figure 4 AA section view; Figure 6 A schematic diagram showing the outer diameter of the axial fan impeller and the outer diameter of the hub of the blower fan impeller; Attached image description: 100. Body; 101. Second air outlet; 102. First air outlet; 103. First accommodating space; 104. Air inlet; 105. Upper shell; 106. Lower shell; 200. Blower fan wheel; 201. First hub; 202. Blower fan blade; 203. Second end; 204. First end; 300. Axial fan wheel; 301. Second hub; 302. Axial fan blade; 303. Second shaft; 400. Air return plate; 401. Front; 402. Connecting rod; 403. Reflector; 404. Back; 500. Heat-conducting plate; 501. Second accommodating space; 600. Semiconductor cooling chip; 700. Spacing; d1. First outer diameter; d2. Second outer diameter; L. Centerline. Detailed Implementation

[0015] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0016] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0017] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0018] Combination Figures 1-6 The fan with side-exit and recirculating air in this embodiment includes a body 100, a blower fan impeller 200, and an axial fan impeller 300. A first accommodating space 103 is formed within the body 100. The blower fan impeller 200 is disposed within the first accommodating space 103. The blower fan impeller 200 includes a first end 204 and a second end 203 perpendicularly intersecting its axis L. Figure 1 , Figure 3 and Figure 5 In the middle, the lower end of the blower fan wheel 200 is the first end 204, and the upper end of the blower fan wheel 200 is the second end 203. Figure 2Conversely, the upper end of the blower fan impeller 200 is the first end 204, and the lower end of the blower fan impeller 200 is the second end 203. The body 100 has an air inlet 104 corresponding to the first end 204 of the blower fan impeller 200, a first air outlet 102 corresponding to the side of the body 100 corresponding to the blower fan impeller 200, and a second air outlet 101 corresponding to the second end 203 of the body 100. When the blower fan impeller 200 rotates, it generates wind from the air inlet 104 to the first air outlet 102, i.e., runoff wind, and simultaneously produces… The airflow from the air inlet 104 to the second air outlet 101 is outward axial flow. The axial flow fan wheel 300 is connected to the second end 203 of the blower fan wheel 200, so that when the blower fan wheel 200 rotates, it drives the axial flow fan wheel 300 to rotate synchronously. In addition, the fan blades of the axial flow fan wheel 300 are configured to generate airflow from the outside of the second air outlet 101 into the first accommodating space 103, i.e., inward axial flow. The body 100 is provided with a return air plate 400 perpendicular to the axis L of the blower fan wheel 200 on the outside of the second air outlet 101.

[0019] In the terms "outward axial flow" and "inward axial flow," "inward" and "outward" are relative to the first accommodating space 103. Outward axial flow is axial flow that flows from the inside of the first accommodating space 103 to the outside. Inward axial flow is axial flow that flows from the outside of the first accommodating space 103 to the inside.

[0020] In the term “outside of the second air outlet 101”, “outside” is relative to the first accommodating space 103.

[0021] The working principle of the above-mentioned fan is as follows: During operation, the blower fan wheel 200 and the axial fan wheel 300 rotate synchronously under the drive of the motor. The air in the environment enters the first accommodating space 103 from the air inlet 104 under the action of the blower fan wheel 200. Then, part of it is blown out from the first air outlet 102 to form a radial airflow, and the other part is blown out from the second air outlet 101 to form an outward axial airflow. After the outward axial airflow is blown to the return air plate 400, it is reflected by the return air plate 400. The reflected air returns to the first accommodating space 103 under the action of the axial fan wheel 300 to form an inward axial airflow. The inward axial airflow is blown out from the first air outlet 102 under the action of the blower fan wheel 200.

[0022] Figure 5 In the diagram, dashed lines represent wind, and arrows on the dashed lines indicate the direction of flow. The upward-pointing dashed line at the second air outlet 101 indicates outward axial flow, the downward-pointing dashed line at the second air outlet 101 indicates inward axial flow, and the rightward-pointing dashed line at the first air outlet 102 indicates runoff.

[0023] As can be seen, the generated runoff and outward axial airflow are two winds with different directions. The runoff is unobstructed and can act on the human body or object surface, while the outward axial airflow blows towards the return air plate 400, which can dissipate heat from the device on the return air plate 400. In one embodiment, the return air plate 400 is equipped with a semiconductor cooling chip 600, and the outward axial airflow is used to dissipate heat from the semiconductor cooling chip 600. It can be seen that the above-mentioned fan can generate both runoff and outward axial airflow, and can be used for both purposes simultaneously. Furthermore, the combination of the return air plate 400, the second air outlet 101, the axial fan wheel 300, and the blower fan wheel 200 allows the outward axial airflow to be recycled into the first accommodating space 103 and blown out from the first air outlet 102, which can increase the airflow volume of the runoff.

[0024] In this embodiment, the main body 100 is composed of a lower shell 106 and an upper shell 105, see Figure 3 The lower shell 106 and the upper shell 105 form a first accommodating space 103. The end of the blower fan wheel 200 facing the lower shell 106 constitutes the first end 204 of the blower fan wheel 200, and the end of the blower fan wheel 200 facing the upper shell 105 constitutes the second end 203 of the blower fan wheel 200. The shaft of the blower fan wheel 200 is rotatably connected to the lower shell 106. This shaft is connected to a drive motor, which drives the shaft to rotate, and the shaft drives the blower fan wheel 200 and the axial fan wheel 300 to rotate synchronously.

[0025] Please refer to Figure 5 In one embodiment, the return air plate 400 includes a front side 401 and a back side 404. The front side 401 is opposite to the body 100, and the back side 404 is provided with a heat-conducting plate 500. A second accommodating space 501 is formed between the heat-conducting plate 500 and the return air plate 400. A semiconductor cooling chip 600 is provided in the second accommodating space 501. The semiconductor cooling chip 600 includes a cold end and a hot end. The cold end is attached to the heat-conducting plate 500, and the hot end is attached to the return air plate 400.

[0026] The heat-conducting plate 500 is made of heat-conducting material. The preferred heat-conducting material is metal sheet such as aluminum sheet or copper sheet, but non-metallic sheet such as plastic sheet or silicone sheet can also be used. The sheet thickness is generally less than 1mm.

[0027] The return air plate 400 is made of a preferred thermally conductive material.

[0028] Understandably, the second accommodating space 501 also needs to be equipped with a power supply and switch for the semiconductor cooling chip 600, with the switch exposed outside the second accommodating space 501 to control the power supply.

[0029] In this embodiment, the fan can cool the body by blowing air onto it through the first air outlet 102, or by contacting the body with the heat-conducting plate 500. The principle behind the heat-conducting plate 500 contacting the body is as follows: when the thermoelectric cooler 600 is powered on, its cold end generates cooling, lowering the temperature of the heat-conducting plate 500. Contacting the heat-conducting plate 500 with the body provides a better cooling experience than blowing air. Furthermore, the heat generated at the hot end is conducted to the return air plate 400, and the outward axial airflow acting on the return air plate 400 accelerates heat dissipation, resulting in better cooling performance from the thermoelectric cooler 600.

[0030] In one embodiment, the reflective portion 403 of the front surface 401 of the return air plate 400 is designed as a concave spherical surface, see... Figure 5 The concave spherical surface is opposite to the hub end of the blower fan wheel 200. After adopting the reflector 403 of the concave spherical surface, the outward axial airflow is reflected by the concave spherical surface and returns to the center of the second air outlet 101, which can reduce the interference between the outward axial airflow and the inward axial airflow.

[0031] In one embodiment, the return air plate 400 is substantially parallel to the body 100, and a gap 700 is provided between the return air plate 400 and the body 100. Figure 5 The interval 700 is connected to the second air outlet 101. Under the action of the axial fan wheel 300, ambient air can flow from the second air outlet 101 into the first accommodating space 103 through the interval 700, and then be blown out from the first air outlet 102 by the blower fan wheel 200, thereby obtaining a larger volume of runoff wind.

[0032] The blades of the axial fan wheel 300 extend within the interval 700, which can better recover the air returned by the return air plate 400.

[0033] In one embodiment, each of the four corners of the return air plate 400 is provided with a connecting rod 402, see Figure 5 The connecting rod 402 is detachably connected to the body 100. Specifically, an external thread can be provided on the connecting rod 402, and a corresponding threaded hole can be provided on the body 100. The connecting rod 402 and the body 100 are detachably connected through threaded engagement, or a tight fit can be used to detachably connect the connecting rod 402 and the body 100. In this embodiment, the return air plate 400 and the body 100 are combined together by the connecting rod 402, which facilitates the forming of the return air plate 400 and the body 100, and also facilitates the maintenance of the fan.

[0034] Understandably, the return air plate 400 can also be integrally formed with the main body 100.

[0035] Please refer to Figure 3 The blower fan wheel 200 includes a hub, hereinafter referred to as the first hub 201.

[0036] The blower fan wheel 200 also includes a shaft, hereinafter referred to as the first shaft.

[0037] The blower fan wheel 200 also includes a plurality of blower fan blades 202, which are respectively connected to the outer periphery of the first hub 201 and surround the outer periphery of the first hub 201. The first shaft is located at the center of the first hub 201. When the motor drives the first shaft to rotate, the first shaft drives the first hub 201 to rotate, and the first hub 201 drives the blower fan blades 202 to rotate.

[0038] Please refer to Figure 3 The axial fan wheel 300 includes a hub, hereinafter referred to as the second hub 301.

[0039] The axial fan wheel 300 also includes a shaft, hereinafter referred to as the second shaft 303.

[0040] The axial fan wheel 300 also includes a plurality of axial fan blades 302, which are respectively connected to the second hub 301, and the second shaft 303 is located at the center of the second hub 301.

[0041] The axial fan wheel 300 is connected to the second end 203 of the blower fan wheel 200, and the axis of the axial fan wheel 300 coincides with the axis of the blower fan wheel 200.

[0042] The outer diameter of the first hub 201 is called the first outer diameter d1, and the outer diameter of the axial flow fan wheel 300 is called the second outer diameter d2. The second outer diameter d2 is smaller than the first outer diameter d1. Figure 6 As shown.

[0043] In one approach, the axial fan wheel 300 and the blower fan wheel 200 can be formed separately. Connecting holes are provided in the second shaft 303 and the first shaft. A screw is inserted into the connecting hole in the shaft and connected, thus connecting the first shaft and the second shaft 303 together, thereby connecting the axial fan wheel 300 to the second end 203 of the blower fan wheel 200. Alternatively, the shaft of the blower fan wheel 200 can extend outward from the second end 203 of the blower fan wheel 200 to form an extension. The hub of the axial fan wheel 300 is connected to this extension, which serves as the shaft of the axial fan wheel 300, thereby connecting the axial fan wheel 300 to the second end 203 of the blower fan wheel 200. In this embodiment, the axial fan wheel 300 and the blower fan wheel 200 are integrally formed, with the axial fan wheel 300 formed at the hub end of the blower fan wheel 200. This integral forming eliminates the need for assembly, facilitating rapid fan assembly.

[0044] The present invention has been described in detail above through specific embodiments. These detailed descriptions are only intended to help those skilled in the art understand the content of the present invention and should not be construed as limiting the scope of protection of the present invention. Various modifications and equivalent transformations made by those skilled in the art to the above solutions under the concept of the present invention should be included within the scope of protection of the present invention.

Claims

1. A fan with air outlets on both sides and capable of reclaiming air, characterized in that: The device includes a body (100), a blower fan (200), and an axial fan (300). A first accommodating space (103) is formed within the body (100). The blower fan (200) is disposed within the first accommodating space (103). The blower fan (200) includes a first end (204) and a second end (203) perpendicularly intersecting its axis (L). The body (100) has an air inlet (104) corresponding to the first end (204), and a first air outlet (102) corresponding to the side of the blower fan (200). The second end (203) is provided with a second air outlet (101). When the blower fan wheel (200) rotates, it generates a radial airflow from the air inlet (104) to the first air outlet (102) and an outward axial airflow from the air inlet (104) to the second air outlet (101). The axial fan wheel (300) is connected to the second end (203) and is used to generate airflow from the outside of the second air outlet (101) into the first accommodating space (103). The body (100) is provided with a return air plate (400) perpendicular to the axis line (L) on the outside of the second air outlet (101).

2. The fan with air outlets on both sides and capable of air recirculation according to claim 1, characterized in that: The return air plate (400) includes a front side (401) and a back side (404). The front side (401) is opposite to the main body (100). The back side (404) is provided with a heat-conducting plate (500). A second accommodating space (501) is formed between the heat-conducting plate (500) and the return air plate (400). A semiconductor cooling chip (600) is provided in the second accommodating space (501). The semiconductor cooling chip (600) includes a cold end and a hot end. The cold end is attached to the heat-conducting plate (500), and the hot end is attached to the return air plate (400).

3. The fan with air outlets on both sides and capable of air recirculation according to claim 2, characterized in that: The front side (401) of the return air plate (400) includes a reflective part (403), which is a concave spherical surface.

4. The fan with air outlets on both sides and capable of air recirculation according to claim 1, characterized in that: A gap (700) is provided between the return air plate (400) and the main body (100), and the gap (700) is connected to the second air outlet (101).

5. The fan with air outlets on both sides and capable of air recirculation according to claim 4, characterized in that: The blades of the axial flow fan wheel (300) extend into the interval (700).

6. The fan with air outlets on both sides and capable of air recirculation according to claim 1, characterized in that: The blower fan wheel (200) includes a hub and blower fan blades (202) surrounding the outer periphery of the hub. The axis of the axial flow fan wheel (300) coincides with the axis of the blower fan wheel (200). The outer diameter of the axial flow fan wheel (300) is smaller than the outer diameter of the hub of the blower fan wheel (200).

7. The fan with air outlets on both sides and capable of air recovery according to claim 6, characterized in that: The axial flow fan wheel (300) is formed at the hub end of the blower fan wheel (200).

8. The fan with air outlets on both sides and capable of air recirculation according to claim 1, characterized in that: The return air plate (400) is provided with multiple connecting rods (402), and the connecting rods (402) are detachably connected to the body (100).

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