Ventilation device with adjustable blade angle

Abstract

The blade angle adjustable ventilation device comprises a ventilation frame, positioning plates are vertically installed on the two sides of the ventilation frame, a supporting plate is fixedly installed on the upper portion of an inner cavity of the ventilation frame, blades are transversely installed below the supporting plate at equal intervals, a supporting shaft is fixedly installed at the center of the top of each blade, and the supporting shaft is fixedly installed on the lower portion of the inner cavity of the ventilation frame. The upper end of the supporting shaft penetrates through the supporting plate and extends to the position above the supporting plate to be fixedly provided with a gear, a gear ring is installed outside the gear in a meshed mode, and an adjusting block is fixedly installed in the middle of the front face of the gear ring. The angle of the blades can be conveniently and quickly adjusted by rotating the adjusting rotating disc, so that the ventilation quantity and the ventilation direction are flexibly controlled according to actual requirements, the practicability and the applicability of the ventilation device are greatly improved, the adjusting rotating disc with the adjusted angle can be locked and fixed through the arrangement of a locking rod and an annular fixing groove, and the practicability is high. The threaded rod is prevented from rotating under the influence of external force, and the ventilation effect stability is ensured.

Description

Technical Field

[0001] This invention relates to the field of ventilation equipment technology, specifically to a ventilation device with adjustable blade angle. Background Technology

[0002] In existing ventilation devices, most have fixed blade angles, making it difficult to flexibly adjust the ventilation volume and direction according to actual usage scenarios and ventilation needs. When indoor air circulation is poor, fixed-angle blades cannot effectively enhance air convection, and when it is necessary to control the ventilation intensity, they cannot be precisely adjusted, resulting in poor ventilation effects and failing to meet diverse usage needs. Summary of the Invention

[0003] The purpose of this invention is to provide a ventilation device with adjustable blade angle, which has the advantage of adjustable blade angle.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a ventilation device with adjustable blade angle, comprising a ventilation frame, positioning plates vertically installed on both sides of the ventilation frame, a support plate fixedly installed above the inner cavity of the ventilation frame, blades horizontally and equidistantly installed below the support plate, a support shaft fixedly installed at the center of the top of the blades, a gear fixedly installed above the support plate at the upper end of the support shaft, a gear ring meshing with the gear, an adjusting block fixedly installed in the center of the front of the gear ring, a threaded rod threadedly installed in the center of the adjusting block, and an adjusting turntable fixedly installed at the right end of the threaded rod extending to the outside of the ventilation frame.

[0005] As a preferred embodiment, a guide rod is horizontally installed on the front side of the top of the support plate, and the protrusion of the guide rod is embedded in the lower end of the adjusting block and slidably installed.

[0006] As a preferred embodiment, a fixing plate is fixedly installed on the right side of the ventilation frame at the location where the threaded rod passes through. A locking rod is locked inside the fixing plate, and the right end of the locking rod passes through the adjusting turntable and extends to the right side.

[0007] As a preferred embodiment, the fixed plate has an annular fixing groove inside, and one end of the locking rod is located inside the annular fixing groove and is securely connected.

[0008] As a preferred embodiment, a ventilation grille is snapped onto the rear end of the ventilation frame, and the blades inside the ventilation frame are arranged at equal intervals with their lower ends in contact with the interior of the ventilation frame.

[0009] As a preferred embodiment, the upper end of the support shaft installed at the center of the gear is rotatably mounted to the top of the ventilation frame cavity via a bearing, and the bottom of the gear ring is designed to rotate on the top of the support plate.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention allows for convenient and quick adjustment of the blade angle by rotating the adjustment dial, thereby flexibly controlling the ventilation volume and direction according to actual needs, greatly improving the practicality and applicability of the ventilation device. The locking rod and annular fixing groove can lock and fix the adjusted dial after the angle is adjusted, preventing the threaded rod from being affected by external forces and ensuring the stability of the ventilation effect.

[0011] 2. In this invention, the guide rod is embedded in the lower end of the adjusting block and slidably installed, which is like defining a precise track for the movement of the adjusting block. When the adjusting turntable is rotated to drive the threaded rod to rotate and cause the adjusting block to move, the guide rod can effectively limit the movement direction of the adjusting block and prevent it from deviating or shaking in the horizontal direction. This avoids the misalignment of the gear ring and gear due to unstable movement of the adjusting block, which would affect the accuracy of the blade angle adjustment and ensure that the entire adjustment process is smooth and orderly. Attached Figure Description

[0012] Figure 1 This is a first-view perspective structural perspective view of the present invention; Figure 2 This is a second-view perspective structural perspective view of the present invention; Figure 3 This is a rear view of the structure of the present invention; Figure 4 This is a partial structural cross-sectional view of the present invention.

[0013] In the diagram: 1. Ventilation frame; 2. Positioning plate; 3. Support plate; 4. Blade; 5. Gear; 6. Gear ring; 7. Adjusting block; 8. Guide rod; 9. Threaded rod; 10. Adjusting turntable; 11. Fixed plate; 12. Locking rod; 13. Ventilation grille; 14. Support shaft. Detailed Implementation

[0014] The technical solutions of 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 some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments. Example 1

[0016] Please see Figure 1 As shown, the present invention provides a ventilation device with adjustable blade angle, including a ventilation frame 1. Positioning plates 2 are vertically installed on both sides of the ventilation frame 1. A support plate 3 is fixedly installed above the inner cavity of the ventilation frame 1. Blades 4 are installed horizontally at equal intervals below the support plate 3. A support shaft 14 is fixedly installed at the center of the top of the blade 4. A gear 5 is fixedly installed above the support plate 3 through the upper end of the support shaft 14. A gear ring 6 is meshed on the outside of the gear 5. An adjusting block 7 is fixedly installed in the middle of the front of the gear ring 6. A threaded rod 9 is threadedly installed in the middle of the adjusting block 7. An adjusting turntable 10 is fixedly installed on the right end of the threaded rod 9 through the outside of the ventilation frame 1.

[0017] This technical solution allows for convenient and quick adjustment of the blade angle 4 by rotating the adjustment dial 10, thereby flexibly controlling the ventilation volume and direction according to actual needs, greatly improving the practicality and applicability of the ventilation device. The locking rod 12 and the annular fixing groove can lock and fix the adjusted dial 10 after the angle is adjusted, preventing the threaded rod 9 from being affected by external forces and ensuring the stability of the ventilation effect. Example 2

[0018] Based on Embodiment 1, the present invention is as follows: Figure 4 As shown, a guide rod 8 is horizontally mounted on the front side of the top of the support plate 3. The protrusion of the guide rod 8 is embedded in the interior of the lower end of the adjusting block 7 and is slidably mounted.

[0019] Adopting such Figure 1 The technical solution shown has a guide rod 8 embedded in the lower end of the adjusting block 7 and slidably installed, which is like defining a precise track for the movement of the adjusting block 7. When the adjusting turntable 10 is rotated to drive the threaded rod 9 to rotate and cause the adjusting block 7 to move, the guide rod 8 can effectively limit the movement direction of the adjusting block 7 and prevent it from deviating or shaking in the horizontal direction. This avoids the misalignment of the gear ring 6 and gear 5 due to the unstable movement of the adjusting block 7, which would affect the accuracy of the blade 4 angle adjustment and ensure that the entire adjustment process is smooth and orderly.

[0020] Secondly, in the technical solution, a fixing plate 11 is fixedly installed on the right side of the ventilation frame 1 and at the part through which the threaded rod 9 passes. A locking rod 12 is locked inside the fixing plate 11. The right end of the locking rod 12 passes through the adjusting turntable 10 and extends to the right side. An annular fixing groove is opened inside the fixing plate 11. One end of the locking rod 12 is located inside the annular fixing groove and is fastened.

[0021] Its adoption is as follows Figure 1The technical solution shown allows for the mechanical limitation of the adjusting turntable 10 after the blade 4 angle is adjusted by adjusting the turntable 10. The locking rod 12 is inserted into the annular fixing groove inside the fixing plate 11, which prevents the adjusting turntable 10 from rotating freely. Since the locking rod 12 is tightly connected to the annular fixing groove, it generates sufficient friction and constraint force to firmly fix the adjusting turntable 10, thereby ensuring that the blade 4 is maintained at the set angle. This ensures that the ventilation device operates stably according to the predetermined ventilation volume and direction, and avoids changes in the blade angle due to external vibration or accidental contact, which would affect the ventilation effect. Example 3

[0022] The present invention is as follows Figures 1-4 As shown, a ventilation grille 13 is snapped onto the rear end of the ventilation frame 1. The blades 4 inside the ventilation frame 1 are arranged at equal intervals and are inclined, with their lower ends in contact with the interior of the ventilation frame 1. The upper end of the support shaft 14 installed at the center of the gear 5 is rotatably mounted to the top of the inner cavity of the ventilation frame 1 via a bearing. The bottom of the gear ring 6 is designed to rotate on the top of the support plate 3.

[0023] Using the above technical solution, the ventilation grille 13 is installed at the rear end of the ventilation frame 1 using a snap-fit ​​method. This installation method is simple and quick to operate, making it easy for staff to quickly disassemble and install the ventilation grille 13. When it is necessary to clean or maintain the inside of the ventilation device, or replace the damaged ventilation grille 13, no complicated tools are needed, saving maintenance time and labor costs. At the same time, the ventilation grille 13 can effectively block larger debris and dust from entering the ventilation device, preventing these foreign objects from getting tangled in the blades 4 and affecting the normal operation of the gears 5 and gear ring 6. It plays a protective role for the precision components inside the ventilation device, extends the service life of the equipment, and also prevents debris from entering the ventilation system and polluting the air, ensuring ventilation quality.

[0024] The working principle of this invention is as follows: When it is necessary to adjust the angle of the blade 4 of the ventilation device, the adjusting turntable 10 is rotated. Since the adjusting turntable 10 is fixedly connected to the threaded rod 9, the rotation of the adjusting turntable 10 drives the threaded rod 9 to rotate. According to the principle of thread transmission, the rotation of the threaded rod 9 will cause the adjusting block 7 to move along the axial direction of the threaded rod 9. The movement of the adjusting block 7 drives the gear ring 6 to move. The movement of the gear ring 6 will drive the gear 5 to rotate through meshing transmission. In turn, the rotation of the gear 5 will drive the blade 4 to rotate around the support shaft 14, thereby realizing the adjustment of the blade 4 angle. After the blade 4 angle is adjusted to the appropriate position, the locking rod 12 is passed through the adjusting turntable 10 and inserted into the annular fixing groove inside the fixing plate 11. Rotating the locking rod 12 will lock the adjusting turntable 10 in place, preventing the adjusting turntable 10 from rotating accidentally, thereby keeping the blade 4 at the adjusted angle and stably achieving the corresponding ventilation volume and ventilation direction.

[0025] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0026] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A blade angle adjustable ventilation device, comprising a ventilation frame (1), characterized in that: Positioning plates (2) are vertically installed on both sides of the ventilation frame (1). A support plate (3) is fixedly installed above the inner cavity of the ventilation frame (1). Blades (4) are installed horizontally at equal intervals below the support plate (3). A support shaft (14) is fixedly installed at the center of the top of the blade (4). A gear (5) is fixedly installed above the support plate (3) through the upper end of the support shaft (14). A gear ring (6) is meshed with the outside of the gear (5). An adjusting block (7) is fixedly installed in the middle of the front of the gear ring (6). A threaded rod (9) is threaded in the middle of the adjusting block (7). An adjusting turntable (10) is fixedly installed at the right end of the threaded rod (9) through the outside of the ventilation frame (1).

2. The blade angle adjustable ventilation device according to claim 1, characterized in that: A guide rod (8) is horizontally installed on the front side of the top of the support plate (3). The protrusion of the guide rod (8) is embedded in the lower end of the adjusting block (7) and is slidably installed.

3. The blade angle adjustable ventilation device according to claim 1, characterized in that: A fixing plate (11) is fixedly installed on the right side of the ventilation frame (1) at the part through which the threaded rod (9) passes. A locking rod (12) is locked inside the fixing plate (11). The right end of the locking rod (12) passes through the adjusting turntable (10) and extends to the right side.

4. The blade angle adjustable ventilation device according to claim 3, characterized in that: The fixed plate (11) has an annular fixing groove inside, and one end of the locking rod (12) is located inside the annular fixing groove and is fastened.

5. The blade angle adjustable ventilation device according to claim 1, characterized in that: The ventilation frame (1) is fitted with a ventilation grille (13) at its rear end. The blades (4) inside the ventilation frame (1) are arranged at equal intervals and their lower ends are in contact with the interior of the ventilation frame (1).

6. The blade angle adjustable ventilation device according to claim 1, characterized in that: The upper end of the support shaft (14) installed at the center of the gear (5) is rotatably mounted to the top of the inner cavity of the ventilation frame (1) via a bearing, and the bottom of the gear ring (6) is designed to rotate on the top of the support plate (3).

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