Variable air ratio fan

Abstract

The utility model discloses a fan fan of variable inlet air ratio relates to fan fan technical field, it includes fan base, fan blade subassembly, limiting component, fixed component, the fan base includes bottom plate, first fan connecting block, second fan connecting block, pivot connecting block, pivot connecting hole, connecting round hole, anti -motion post, fan connecting hole and dovetail groove. Through above -mentioned structure, through the establishment of different position's dovetail groove, make the fan blade in with different position dovetail groove cooperation, present different angle, through limiting component to fan blade subassembly and carry out the limiting, through fixed component to fan blade subassembly and carry out the fixed, make it when rotating not fall, adjust the fan blade angle in this way, reach the effect of change inlet air ratio.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, specifically a fan with a variable air intake ratio. Background Technology

[0002] A fan is a device that uses rotating blades to propel airflow for ventilation, cooling, or enhancing air circulation. Driven by an electric motor, it rotates the blades, causing airflow to move in a directional or diffused manner. Fans are widely used in homes, industries, and for cooling electronic equipment. There are various types of fans, including household table fans, ceiling fans, industrial blowers, and computer cooling fans, whose performance depends on the blade design, rotation speed, and angle. Modern fans also feature intelligent control, energy-saving, and quiet operation technologies to meet the needs of different scenarios.

[0003] Existing fan blades typically have a fixed air intake angle during use, which cannot be adjusted according to actual needs, resulting in low air intake efficiency. This makes it difficult to achieve ideal ventilation, especially in complex environments. To address this, we provide a fan with a variable air intake ratio. Summary of the Invention

[0004] This utility model provides a variable air intake ratio fan. By setting dovetail grooves at different positions, the fan blades can be at different angles when they are engaged with the dovetail grooves at different positions. The fan blade assembly is limited by a limiting component and fixed by a fixing component to prevent it from falling off during rotation. In this way, the fan blade angle can be adjusted to change the air intake ratio.

[0005] To achieve the above objectives, a variable air intake ratio fan is provided, comprising a fan base, a fan blade assembly, a limiting assembly, and a fixing assembly. The fan base includes a base plate, a first fan connecting block, a second fan connecting block, a rotating shaft connecting block, a rotating shaft connecting hole, a connecting round hole, an anti-moving post, a fan connecting hole, and a dovetail groove. The rotating shaft connecting hole is used to connect an external rotating component, thereby driving the device to rotate. The first fan connecting block is fixedly connected to the upper surface of the base plate, the second fan connecting block is fixedly connected to the upper surface of the first fan connecting block, the rotating shaft connecting block is fixedly connected to the upper surface of the second fan connecting block, the rotating shaft connecting hole is formed on the surface of the rotating shaft connecting block, the connecting round hole is formed on the surface of the rotating shaft connecting block and is located outside the rotating shaft connecting hole, the anti-moving post is fixedly connected to the upper surface of the second fan connecting block, the fan connecting hole is formed on the outer surfaces of the first and second fan connecting blocks, and the dovetail groove is formed on the outer surfaces of the first and second fan connecting blocks.

[0006] According to the aforementioned variable air intake ratio fan, the dovetail groove is connected to the fan connection hole.

[0007] According to the variable air intake ratio fan, the dovetail groove is located outside the fan connection hole.

[0008] According to the aforementioned variable air intake ratio fan, the fan blade assembly includes a connecting shaft, a dovetail block, a limiting groove, and a fan blade body. The connecting shaft is slidably connected inside the fan connecting hole, the dovetail block is fixedly connected to the outer surface of the connecting shaft, the dovetail block is slidably connected inside the dovetail groove, the limiting groove is formed on the outer surface of the connecting shaft, and the fan blade body is fixedly connected to the end face of the connecting shaft away from the dovetail block. Multiple fan blade assemblies are provided.

[0009] According to the variable air intake ratio fan, the limiting component includes a limiting arc plate, an opening, a positioning block, and a first bolt. The limiting arc plate is disposed on the outer surface of the first fan connecting block and the second fan connecting block. The opening is formed on the outer surface of the limiting arc plate. The positioning block is fixedly connected to the side surface of the limiting arc block. The first bolt is threadedly connected to the positioning plate and the interior of the first fan connecting block and the second fan connecting block.

[0010] According to the variable air intake ratio fan, the fixing component includes a fixing block, a limiting pin, a limiting block and a second bolt, and the fixing block is fixedly connected to the upper surface of the first fan connecting block and the second fan connecting block.

[0011] According to the variable air intake ratio fan, the limiting pin is slidably connected inside the fixing block, the limiting block is fixedly connected to the upper surface of the limiting pin, the limiting block is located inside the limiting groove, and the second bolt is threadedly connected inside the limiting pin and the fixing block.

[0012] The beneficial effects of this utility model are as follows: by setting dovetail grooves at different positions, the fan blades are at different angles when they are engaged with the dovetail grooves at different positions. The fan blade assembly is limited by the limiting component and fixed by the fixing component, so that it will not fall off when rotating. In this way, the angle of the fan blades can be adjusted to change the air intake ratio.

[0013] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a schematic diagram of the overall structure of a variable air intake ratio fan according to the present invention; Figure 2 This is a schematic diagram of the fan base structure of a variable air intake ratio fan according to the present invention; Figure 3This is an enlarged view of point A of a variable air intake ratio fan according to this utility model; Figure 4 This is a schematic diagram of the fan blade assembly structure of a variable air intake ratio fan according to the present invention; Figure 5 This is a schematic diagram of the limiting component structure of a variable air intake ratio fan according to the present invention; Figure 6 This is a schematic diagram of the fixing component structure of a variable air intake ratio fan according to the present invention; Figure 7 This is a schematic diagram of the internal structure of the fixing component of a variable air intake ratio fan according to this utility model.

[0015] Legend: 1. Fan base; 101. Base plate; 102. First fan connecting block; 103. Second fan connecting block; 104. Shaft connecting block; 105. Shaft connecting hole; 106. Connecting round hole; 107. Anti-moving column; 108. Fan connecting hole; 109. Dovetail groove; 2. Fan blade assembly; 201. Connecting shaft; 202. Dovetail block; 203. Limiting groove; 204. Fan blade body; 3. Limiting assembly; 301. Limiting arc plate; 302. Opening; 303. Positioning block; 304. First bolt; 4. Fixing assembly; 401. Fixing block; 402. Limiting pin; 403. Limiting block; 404. Second bolt. Detailed Implementation

[0016] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0017] Reference Figures 1 to 7This utility model discloses a variable air intake ratio fan, which includes a fan base 1, a fan blade assembly 2, a limiting assembly 3, and a fixing assembly 4. The fan base 1 includes a base plate 101, a first fan connecting block 102, a second fan connecting block 103, a shaft connecting block 104, a shaft connecting hole 105, a connecting round hole 106, an anti-moving post 107, a fan connecting hole 108, and a dovetail groove 109. The first fan connecting block 102 is fixedly connected to the upper surface of the base plate 101, the second fan connecting block 103 is fixedly connected to the upper surface of the first fan connecting block 102, and the shaft connecting block 104 is fixedly connected to the second fan connecting block 103. On the surface, a shaft connection hole 105 is formed on the surface of the shaft connection block 104, a connecting round hole 106 is formed on the surface of the shaft connection block 104, the connecting round hole 106 is located outside the shaft connection hole 105, an anti-movement post 107 is fixedly connected to the upper surface of the second fan connection block 103, a fan connection hole 108 is formed on the outer surface of the first fan connection block 102 and the second fan connection block 103, a dovetail groove 109 is formed on the outer surface of the first fan connection block 102 and the second fan connection block 103, the dovetail groove 109 is connected to the fan connection hole 108, the dovetail groove 109 is located outside the fan connection hole 108, and multiple dovetail grooves 109 are provided.

[0018] The fixing component 4 includes a fixing block 401, a limiting pin 402, a limiting block 403, and a second bolt 404. The fixing block 401 is fixedly connected to the upper surfaces of the first fan connecting block 102 and the second fan connecting block 103. The limiting pin 402 is slidably connected inside the fixing block 401. The limiting block 403 is fixedly connected to the upper surface of the limiting pin 402 and is located inside the limiting groove 203. The second bolt 404 is threadedly connected to the limiting pin 402 and the fixing block 401. The fixing block 401, the limiting pin 402, and the limiting block 403 are all made of stainless steel.

[0019] The limiting component 3 includes a limiting arc plate 301, an opening 302, a positioning block 303, and a first bolt 304. The limiting arc plate 301 is disposed on the outer surface of the first fan connecting block 102 and the second fan connecting block 103. The opening 302 is formed on the outer surface of the limiting arc plate 301. The positioning block 303 is fixedly connected to the side surface of the limiting arc plate. The first bolt 304 is threadedly connected to the positioning plate and the inside of the first fan connecting block 102 and the second fan connecting block 103.

[0020] The fan blade assembly 2 includes a connecting shaft 201, a dovetail block 202, a limiting groove 203, and a fan blade body 204. The connecting shaft 201 is slidably connected inside the fan connecting hole 108. The dovetail block 202 is fixedly connected to the outer surface of the connecting shaft 201. The dovetail block 202 is slidably connected inside the dovetail groove 109. The limiting groove 203 is formed on the outer surface of the connecting shaft 201. The fan blade body 204 is fixedly connected to the end face of the connecting shaft 201 away from the dovetail block 202.

[0021] Working principle: By sliding the dovetail block 202, which is fixedly connected to the outer surface of the connecting shaft 201, into the dovetail groove 109 at different positions, the angle of the fan blade body 204 is adjusted. After the connecting shaft 201 is inserted into the fan connecting hole 108, two limiting arc plates 301 are placed on the left and right sides of the connecting shaft 201, and the opening 302 is used to hold the outer surface of the connecting shaft 201. Then, the positioning block 303, which is fixedly connected to the side surface of the limiting arc plate 301, is fixed with the first bolt 304. Then, the limiting pin 402 is inserted into the hole opened on the upper surface of the fixing block 401. After insertion, the limiting block 403, which is fixedly connected to the upper surface of the limiting pin 402, should be located inside the limiting groove 203. Then, the limiting pin 402 is fixed with the second bolt 404, thereby fixing the position of the fan blade assembly 2.

[0022] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A fan with a variable air intake ratio, characterized in that, The fan base includes a fan base (1), a fan blade assembly (2), a limiting assembly (3), and a fixing assembly (4). The fan base (1) includes a base plate (101), a first fan connecting block (102), a second fan connecting block (103), a shaft connecting block (104), a shaft connecting hole (105), a connecting round hole (106), an anti-moving post (107), a fan connecting hole (108), and a dovetail groove (109). The first fan connecting block (102) is fixedly connected to the upper surface of the base plate (101), and the second fan connecting block (103) is fixedly connected to the upper surface of the first fan connecting block (102). The shaft connecting block (104) is fixedly connected to the upper surface of the first fan connecting block (102). The shaft is fixedly connected to the upper surface of the second fan connecting block (103). The shaft connecting hole (105) is opened on the surface of the shaft connecting block (104). The connecting round hole (106) is opened on the surface of the shaft connecting block (104). The connecting round hole (106) is located outside the shaft connecting hole (105). The anti-moving post (107) is fixedly connected to the upper surface of the second fan connecting block (103). The fan connecting hole (108) is opened on the outer surface of the first fan connecting block (102) and the second fan connecting block (103). The dovetail groove (109) is opened on the outer surface of the first fan connecting block (102) and the second fan connecting block (103).

2. The variable air intake ratio fan according to claim 1, characterized in that, The dovetail groove (109) is connected to the fan connection hole (108).

3. A variable air intake ratio fan according to claim 1, characterized in that, The dovetail groove (109) is located outside the fan connection hole (108).

4. A variable air intake ratio fan according to claim 1, characterized in that, The fan blade assembly (2) includes a connecting shaft (201), a dovetail block (202), a limiting groove (203), and a fan blade body (204). The connecting shaft (201) is slidably connected inside the fan connecting hole (108). The dovetail block (202) is fixedly connected to the outer surface of the connecting shaft (201). The dovetail block (202) is slidably connected inside the dovetail groove (109). The limiting groove (203) is opened on the outer surface of the connecting shaft (201). The fan blade body (204) is fixedly connected to the end face of the connecting shaft (201) away from the dovetail block (202).

5. A variable air intake ratio fan according to claim 1, characterized in that, The limiting component (3) includes a limiting arc plate (301), an opening (302), a positioning block (303), and a first bolt (304). The limiting arc plate (301) is disposed on the outer surface of the first fan connecting block (102) and the second fan connecting block (103). The opening (302) is opened on the outer surface of the limiting arc plate (301). The positioning block (303) is fixedly connected to the side surface of the limiting arc block. The first bolt (304) is threadedly connected to the positioning plate and the inside of the first fan connecting block (102) and the second fan connecting block (103).

6. A variable air intake ratio fan according to claim 1, characterized in that, The fixing component (4) includes a fixing block (401), a limiting pin (402), a limiting block (403), and a second bolt (404). The fixing block (401) is fixedly connected to the upper surface of the first fan connecting block (102) and the second fan connecting block (103).

7. A variable air intake ratio fan according to claim 6, characterized in that, The limiting pin (402) is slidably connected inside the fixing block (401), the limiting block (403) is fixedly connected to the upper surface of the limiting pin (402), the limiting block (403) is located inside the limiting groove (203), and the second bolt (404) is threadedly connected inside the limiting pin (402) and the fixing block (401).

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