A pneumatic fresh air circulating fan

Abstract

The application discloses a kind of pneumatic fresh air circulation fans, including pneumatic rotator, pneumatic rotator bottom installs multiple hollow type fan blade, top rotation installation stabilizing column;Stabilizing column has an air inlet, stabilizing column is installed in fresh air system side, and the air inlet of stabilizing column is towards fresh air outlet setting;More than one hollow type fan blade, fan blade inside all have airflow channel, airflow enters each fan blade and is discharged through the air inlet of stabilizing column, gas in the pneumatic rotator of the present application enters hollow fan blade directly through the opening in bottom side face;Pneumatic rotator hollow airfoil fan blade structure, upper fan blade lower end is grid type air outlet, and airfoil fan blade middle is connected by guide vane;Fresh air enters fan blade from airfoil front end, passes through guide vane, and is discharged from grid outlet;Airflow outflow reverse action force promotes fan blade rotation, to rotate movement is thus promoted to multiple fan blades;Utilize the airflow of fresh air machine to drive fan blade rotation, provide a kind of comfortable and safe cooling method.

Description

Technical Field

[0001] This invention relates to the field of indoor air quality treatment, and specifically to a pneumatic fresh air circulation fan. Background Technology

[0002] Traditional ceiling fans are driven by motors to rotate the blades. These fans rotate quickly, have strong airflow, and are particularly noisy. The direct airflow onto the body can feel uncomfortable, especially when air conditioning is running.

[0003] When people are indoors, especially in crowded places, they need to inhale oxygen and exhale carbon dioxide, which requires the introduction of fresh air from the outside. There are two main ways to introduce fresh air: one is to open the window directly; the other is to introduce outdoor fresh air in an organized manner. The first method, opening the window directly, will cause serious leakage of air conditioning cold air and is not energy-efficient, so this method is gradually being discouraged. The second method, mechanical fresh air supply, is the preferred choice, which provides a usage scenario for using fresh air as the power to drive the fan to rotate. Summary of the Invention

[0004] To address the aforementioned issues, this invention provides a pneumatic fresh air circulation fan that uses fresh air as power to drive the fan blades to rotate, resulting in a more even temperature distribution throughout the room, enhancing comfort, and effectively overcoming the shortcomings of existing technologies.

[0005] This invention is achieved through the following technical solution: a pneumatic fresh air circulation fan, comprising:

[0006] A pneumatic rotator, wherein multiple hollow fan blades are installed at the bottom of the pneumatic rotator and a pressure stabilizing column is rotatably installed at the top;

[0007] The pressure stabilizing column has an air inlet and is installed at the bottom of the fresh air system, with the air inlet facing the fresh air outlet.

[0008] The fan blade has one or more hollow blades, each with an airflow channel inside. The airflow enters each blade through the air inlet of the pressure stabilizing column and is then discharged. The reverse force of the outflowing airflow drives the fan blade to rotate.

[0009] As a preferred technical solution, the pneumatic rotator has an air intake chamber inside, an opening at the top, and a pressure stabilizing column inserted into the air intake chamber from the top.

[0010] As a preferred technical solution, concave rings are provided on both the upper and lower sides of the pneumatic rotator, and a rotary bearing is installed inside the concave ring; the pressure stabilizing column passes through the inner ring of the rotary bearing and is inserted into the bottom of the pneumatic rotator;

[0011] Multiple pressure stabilizing chamber outlet holes are provided around the lower part of the pressure stabilizing column; the pressure stabilizing chamber inside the pressure stabilizing column is connected to the air inlet chamber on the pneumatic rotator through the multiple pressure stabilizing chamber outlet holes.

[0012] As a preferred technical solution, the root of the fan blade is formed with a first assembly part facing outward and a second assembly part protruding upward.

[0013] The first assembly part that is spliced ​​outward is an arc-shaped connector; the inner diameter of the arc-shaped connector matches the outer edge of the protruding rotary bearing of the pneumatic rotator.

[0014] The arc-shaped connectors on the multiple hollow fan blades form a complete 360-degree ring; this ring is arranged around the outside of the pneumatic rotator; the upward-protruding second assembly is tightly connected to the outside of the pneumatic rotator.

[0015] As a preferred technical solution, the second assembly part is fixed to the pneumatic rotator with screws on the side, and the first assembly part is fixed to the pneumatic rotator with screws at the bottom.

[0016] As a preferred technical solution, each fan blade is equipped with a guide vane inside. Each fan blade includes an upper part and a lower part. One end of the airflow channel of the fan blade is the airflow inlet end, and the other end is the airflow outlet end. The angle of attack of each fan blade is between 10 and 25 degrees.

[0017] As a preferred technical solution, a first hollow annular outer cover and a second hollow annular outer cover are respectively installed at the upper and lower ends of the pneumatic rotator; a connecting piece is provided on the first assembly part;

[0018] The second hollow annular outer cover is mounted on the connecting piece of the first assembly part by fastening bolts;

[0019] The pressure stabilizing column passes through the first hollow annular outer cover, and a gap is formed between the outer wall of the pressure stabilizing column and the first hollow annular outer cover; the first hollow annular outer cover is connected to the outside of the pneumatic rotator by fastening bolts.

[0020] As a preferred technical solution, a circulating fan hanging ring is provided at the top of the voltage stabilizing column.

[0021] The beneficial effects of this invention are as follows: This invention uses the indoor airflow introduced by the fresh air unit as the driving force to drive the fan blades to rotate. The main features and advantages of this design are as follows:

[0022] 1. Air-driven, zero energy consumption: The fresh air circulation fan adjusts the fan blade rotation speed by controlling and regulating the airflow speed. Compared with traditional motors, the pneumatic circulation fan does not require electric drive and has less torque. This not only eliminates the safety issues caused by traditional motor fans, but also achieves zero energy consumption, making it an ultra-energy-saving product.

[0023] 2. Comfortable breeze: The pneumatic rotation of the fan blades causes the airflow in the room to circulate, giving people a feeling of a gentle breeze, which solves the discomfort caused by the direct blowing of traditional ceiling fans.

[0024] 3. Use of air conditioner and fresh air circulator: Fresh air circulator is especially suitable for use in combination with split air conditioner. The cool air produced by split air conditioner is circulated in the indoor micro-environment by the pneumatic fan, which can make the whole room cool and hot evenly and improve the comfort.

[0025] In summary, the fresh air circulator fan is an environmentally friendly and energy-saving solution that provides a comfortable and safe cooling method by using the airflow of a fresh air unit to drive the fan blades to rotate. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic cross-sectional view of the present invention;

[0028] Figure 2 This is a top view of the assembled fan blades of the present invention;

[0029] Figure 3 This is a cross-sectional view of the hollow fan blade in this invention;

[0030] Figure 4 This is a plan view of the fan blade of the present invention; Detailed Implementation

[0031] All features disclosed in this specification, or steps in all methods or processes disclosed herein, may be combined in any way, except for mutually exclusive features and / or steps.

[0032] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0033] In the description of this invention, it should be understood that the terms "one end", "the other end", "outer side", "upper", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0034] Furthermore, in the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] The terms used in this invention, such as “above,” “over,” “below,” and “under,” indicating spatial relative position, are for illustrative purposes to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. The terms of spatial relative position may be intended to include different orientations of the device in use or operation other than those shown in the figures. For example, if the device in the figures is flipped, a unit described as being “below” or “under” other units or features would be located “above” other units or features. Therefore, the exemplary term “under” can encompass both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or otherwise) and the spatially related descriptive terms used herein shall be interpreted accordingly.

[0036] In this invention, unless otherwise explicitly specified and limited, the terms "set," "socket," "connect," "through," and "plug-in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0037] like Figure 1 As shown, the present invention provides a pneumatic fresh air circulation fan, including a pneumatic rotator 7. The pneumatic rotator 7 has multiple hollow fan blades installed at its bottom and a pressure stabilizing column 2 rotatably installed at its top. The pressure stabilizing column 2 is fixed at its top and can be suspended. The fan blades drive the pneumatic rotator 7 to rotate around the pressure stabilizing column 2. The pneumatic rotation causes the fan blades to drive the indoor airflow to circulate, giving people a feeling of a breeze. This solves the discomfort caused by traditional ceiling fans blowing directly on people and is especially suitable for use in combination with split air conditioners.

[0038] It also includes a pressure stabilizing column 2, which has an air inlet 3. The pressure stabilizing column 2 is installed on one side of the fresh air system, and the air inlet 3 of the pressure stabilizing column 2 is set towards the fresh air outlet. In this way, when the fresh air is vented, the airflow introduced into the room by the fresh air unit is used as the driving force to drive the fan blades to rotate. The rotation speed of the fan blades can be adjusted by controlling and regulating the airflow speed. For example, the cold air produced by the split air conditioner circulates in the indoor microenvironment through the pneumatic fan, which can make the entire room cool and warm evenly and improve the comfort.

[0039] In this embodiment, the pneumatic circulating fan is driven by reverse thrust based on the principles of aerodynamics, and is driven passively without a motor.

[0040] It also includes one or more hollow fan blades. In this embodiment, there are three hollow fan blades. Each fan blade has an airflow channel inside. The airflow enters into each fan blade through the air inlet 3 of the pressure stabilizing column 2 and is discharged. The reverse force of the airflow drives the fan blade to rotate. Specifically, each hollow fan blade can be an airfoil structure with replaceable fluidity to disperse the airflow. In other embodiments, the number of hollow fan blades can be more or less, depending on the actual needs.

[0041] The pneumatic rotator 7 has an air intake chamber inside, and the top of the pneumatic rotator 7 is open. The pressure stabilizing column 2 is inserted into the air intake chamber of the pneumatic rotator 7 from the top.

[0042] In order to achieve better positioning, docking and rotation of the pressure stabilizing column 2 and the pneumatic rotator 7, so that the pneumatic rotator 7 can rotate better around the pressure stabilizing column 2 and achieve the purpose of rotation, thereby better dispersing the surrounding airflow; in this embodiment, the upper and lower sides of the pneumatic rotator 7 are provided with concave rings 10, and the concave rings 10 are equipped with rotary bearings 5; the pressure stabilizing column 2 passes through the inner ring of the rotary bearing 5 and is inserted into the bottom of the pneumatic rotator 7;

[0043] The lower part of the pressure stabilizing column 2 is provided with multiple pressure stabilizing chamber air outlets 9. These outlets 9 can be rectangular or other shapes. The pressure stabilizing chambers and air inlet chambers in the pressure stabilizing column 2 are connected and communicated through these outlets 9. External fresh air enters the pressure stabilizing column 2 through the air inlet 3, meaning the airflow enters from the top and exits from the bottom. A certain amount of air can be stored in the pressure stabilizing chamber to stabilize the airflow.

[0044] like Figures 2-4 As shown, each fan blade root has an outward-facing first assembly part and an upward-protruding second assembly part. The outward-facing first assembly part is an arc-shaped connector. The inner diameter of the arc-shaped connector matches the outer edge of the protruding rotary bearing of the pneumatic rotator. The arc-shaped connectors on multiple hollow fan blades form a complete 360-degree ring. This ring surrounds the outside of the pneumatic rotator. The upward-protruding second assembly part is tightly connected to the outside of the pneumatic rotator, reducing the stress on the fan blade connection points during rotation. The sealing capability after assembly can be increased by adding an external sealing ring, achieving the purpose of a sealed assembly.

[0045] The second assembly part is fixed to the pneumatic rotator with screws on the side, and the first assembly part is fixed to the pneumatic rotator with screws at the bottom to increase the strength of the assembly connection.

[0046] In this embodiment, each fan blade is provided with a guide vane inside. Each fan blade includes an upper part and a lower part. One end of the airflow channel of the fan blade is the airflow inlet end, and the other end is the airflow outlet end. The angle of attack of each fan blade is between 10 and 25 degrees.

[0047] In this embodiment, a first hollow annular outer cover 4 and a second hollow annular outer cover 17 are respectively installed at the upper and lower ends of the pneumatic rotator 7; a connecting piece 14 is provided on the first assembly part 15; the second hollow annular outer cover 17 is installed on the connecting piece 14 of the first assembly part 15 by fastening bolts; the pressure stabilizing column 2 passes through the first hollow annular outer cover 4, and a gap is formed between the outer wall surface of the pressure stabilizing column 2 and the first hollow annular outer cover 4; to ensure that there is no friction between the pressure stabilizing column 2 and the outer cover 4, free rotation is achieved, and the gap should not be too large, preferably 1mm. The shape of the outer cover 4 can also be a circular arc structure. Of course, the outer cover 4 can also adopt other shapes; the first hollow annular outer cover 4 is connected to the outside of the pneumatic rotator by fastening bolts.

[0048] In this embodiment, a circulating fan hanging ring 1 is provided on the top of the voltage stabilizing column 2, and the circulating fan hanging ring 1 can be used to achieve the purpose of installation.

[0049] To improve assembly strength, in this embodiment, the upper and lower parts of the fan blade root are integrally formed, and a reinforcing rib 11 is provided at the joint to improve the strength of the fan blade and prevent damage.

[0050] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A pneumatic fresh air circulation fan, characterized in that, include: A pneumatic rotator (7) is provided with multiple hollow fan blades (8) installed at the bottom and a pressure stabilizing column (2) rotatably installed at the top. The pressure stabilizing column (2) has an air inlet (3) and is installed at the lower end of the fresh air system. The air inlet (3) of the pressure stabilizing column (2) is set towards the fresh air outlet. There are one or more hollow fan blades (8), each with an airflow channel inside. The airflow enters into each fan blade through the air inlet (3) of the pressure stabilizing column (2) and is discharged. The reverse force of the airflow drives the fan blades to rotate. The pneumatic rotator (7) has an air intake chamber inside, and the top of the pneumatic rotator (7) is open. The pressure stabilizing column (2) is inserted into the air intake chamber of the pneumatic rotator (7) from the top. The pneumatic rotator (7) has concave rings (10) on both the upper and lower sides, and a rotary bearing (5) is installed inside the concave rings (10); the pressure stabilizing column (2) passes through the inner ring of the rotary bearing (5) and is inserted into the bottom of the pneumatic rotator (7); Multiple pressure stabilizing chamber outlet holes (9) are provided around the lower part of the pressure stabilizing column (2); the pressure stabilizing chamber inside the pressure stabilizing column (2) is connected to the air inlet chamber on the pneumatic rotator (7) through the multiple pressure stabilizing chamber outlet holes (9); The root of each fan blade has an outward-facing first assembly part (15) and an upward-protruding second assembly part (11); The first assembly part (15) that splices outward is an arc-shaped connector; the inner diameter of the arc-shaped connector matches the outer edge of the protruding rotary bearing (5) of the pneumatic rotator (7); the arc-shaped connectors on the multiple hollow fan blades form a complete 360-degree ring; the ring is arranged around the outside of the pneumatic rotator (7); the second assembly part (11) that protrudes upward is tightly connected to the outside of the pneumatic rotator (7); The second assembly part (11) is fixed to the pneumatic rotator (7) by screws at the side position, and the first assembly part (15) is fixed to the pneumatic rotator (7) by screws at the bottom position. Each fan blade is equipped with a guide vane. Each fan blade includes an upper part (12) and a lower part (13). One end of the airflow channel of the fan blade is the airflow inlet, and the other end is the airflow outlet (83). The angle of attack of each fan blade is between 10 and 25 degrees. The pneumatic rotator (7) is equipped with a first hollow annular outer cover (4) and a second hollow annular outer cover (17) at its upper and lower ends respectively; a connecting piece (14) is provided on the first assembly part (15); the second hollow annular outer cover (17) is installed on the connecting piece (14) of the first assembly part (15) by fastening bolts; the pressure stabilizing column (2) passes through the first hollow annular outer cover (4), and a gap is formed between the outer wall of the pressure stabilizing column (2) and the first hollow annular outer cover (4); the first hollow annular outer cover (4) is connected to the outside of the pneumatic rotator by fastening bolts; A circulating fan hanging ring (1) is set on the top of the voltage stabilizing column (2).

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