Fan capable of increasing air volume by utilizing injection effect

Abstract

The utility model relates to the technical field of fans, and discloses a fan capable of increasing air volume by utilizing injection effect, which comprises a base and a bottom plate, four heat dissipation ports are arranged outside the base, a connector is arranged on the front side of the left end of the base, a ring block is fixedly connected inside the base, through holes are arranged at four corners of the top end of the ring block, and the through holes are communicated with the through holes. Balls are fixedly connected to the interiors of the through holes, supports are fixedly connected to the top ends of the exteriors of the four balls, fans are fixedly connected to the bottom ends of the supports, fixing blocks are fixedly connected to the four corners of the interior of the base, first holes are formed in the four corners of the top end of the bottom plate, and a plurality of second holes are formed in the top end of the bottom plate. According to the utility model, after the air flow with different flow speeds provided by the fan is matched with the air flow in the air, the air volume can be adjusted, and the air flowing direction and range can be changed by adjusting the top air pipe, so that the fan started on the bracket can be buffered, and the influence of vibration on the whole fan is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a fan that increases the air volume by using the ejector effect. Background Technique

[0002] A fan is an electrical device used to generate an air flow and reduce the temperature of the surrounding air. It usually consists of one or more rotating blades, which are driven by an electric motor to rotate at high speed, thereby generating an air flow. The design of the fan aims to discharge the hot air from around the human body, bringing a cool feeling.

[0003] Traditional fans usually change the air volume by adjusting the motor speed. Although this method can adjust the air volume, there are some problems. First, the speed adjustment range of the motor is limited, so the air volume adjustment range is also limited. Second, the speed adjustment of the motor will affect the service life of the motor. Long-term high-speed operation will shorten the service life of the motor. In addition, the speed adjustment of the motor will also affect the noise and energy consumption of the fan. When running at high speed, the noise is large and the energy consumption is high. For this reason, in view of the above problems, a fan that increases the air volume by using the ejector effect is proposed to solve the above problems. Summary of the Utility Model

[0004] In order to make up for the above deficiencies, the utility model provides a fan that increases the air volume by using the ejector effect, aiming to improve the problems that the traditional fan in the existing technology affects the service life of the motor by adjusting the air flow and cannot adjust the air flow of the fan from multiple angles.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A fan that increases the air volume by using the ejector effect includes a base and a bottom plate. Four heat dissipation openings are provided on the outside of the base. An interface is provided on the front side of the left end of the base. A ring block is fixedly connected inside the base. Through holes are provided at the four corners of the top of the ring block. Balls are fixedly connected inside the through holes. The outer tops of the four balls are fixedly connected with brackets. A fan is fixedly connected to the bottom end of the bracket. Fixed blocks are fixedly connected to the four corners inside the base. Through holes one are provided at the four corners of the top of the bottom plate. A plurality of through holes two are provided on the top of the bottom plate. Four curved blocks are fixedly connected to the top of the bottom plate. An outer cylinder is fixedly connected to the top of the curved block. A plurality of grooves are provided on the outside of the outer cylinder. Air windows are provided at the four corners of the bottom end of the outer cylinder. A ring groove is provided at the outer top of the outer cylinder. An inner air cylinder is fixed in the middle of the bottom plate. A rotating assembly for adjusting the air volume is arranged outside the inner air cylinder;

[0007] As a further description of the above technical solution:

[0008] The rotating assembly includes a plurality of limiting rods, a plurality of first rotating rods, a plurality of blades, a plurality of second rotating rods, a plurality of control rings, a plurality of limiting blocks, a plurality of sliders, and six connecting blocks. A plurality of limiting rods are fixedly connected to the outside of the inner air duct. The inner wall of the top end of the limiting rod is rotatably connected to a first rotating rod. The top end of the first rotating rod is fixedly connected to a blade. The bottom end of the first rotating rod is rotatably connected to a second rotating rod. A control ring is slidably connected to the outside of the plurality of limiting rods. A plurality of limiting blocks are fixedly connected to the inside of the control ring. A plurality of sliders are fixedly connected to the outside of the control ring. Six connecting blocks are fixedly connected to the bottom end of the control ring. An adjustment switch is fixedly arranged on the front side of the top end of the bottom plate. The left end of one of the connecting blocks penetrates through the outer cylinder and is fixedly connected to a second knob a;

[0009] As a further description of the above technical solution:

[0010] The inner wall of the annular groove is slidably connected to an outer ring. A second knob b is arranged on the front side of the outside of the outer ring. The top end of the outer ring is fixedly connected to a top air duct. The left end of the top air duct is fixedly connected to a square frame. Installation holes are formed in both the front and rear sides of the square frame. Two of the installation holes are internally rotatably connected to rotating blades. The front and rear sides of the right end of the rotating blade are rotatably connected to connecting plates. The front side of the bottom rotating blade is fixedly connected to a third knob;

[0011] As a further description of the above technical solution:

[0012] The bottom end of the bracket is in contact with the bottom end of the bottom plate. The outside of the blower is engaged with the inner wall of the annular block;

[0013] As a further description of the above technical solution:

[0014] The bottom end of the outer cylinder is in contact with the top end of the bottom plate. The outside of the bottom plate is engaged with the inner wall of the top end of the base;

[0015] As a further description of the above technical solution:

[0016] The bottom end of the blade is slidably connected to the top end of the inner air duct. The bottom end of the second rotating rod is rotatably connected to the outside of the slider;

[0017] As a further description of the above technical solution:

[0018] The outside of the slider is slidably connected to the inner wall of the limiting rod. The adjustment switch is electrically connected to the blower;

[0019] As a further description of the above technical solution:

[0020] The rear side of the third knob is rotatably connected to the front side of the outside of the square frame. The left and right sides of the rotating blade are slidably connected to the inner walls of the front and rear sides of the square frame.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, the fan is started by rotating the adjustment switch. Then, by sliding the second knob a in the groove, the connecting block is driven to pull the control ring to slide up and down outside the limiting rod. The control ring drives the second rotating rod to rotate through the limiting block. The second rotating rod drives the first rotating rod to rotate, pulling the blades to rotate and expand or contract with the top end of the inner air cylinder as the center, changing the high-speed air flow at the outlet of the inner air cylinder. At this time, the external air flow entering the inner air cylinder through the air window will be driven by the high-speed air flow of the inner air cylinder, and the two air flows are mixed to produce an entrainment reaction, changing the flow rate of the air flow. Finally, the mixed air flow will be sent to the top air duct and flow out together, realizing that the high-speed flowing air flow drives the external low-speed air flow to be mixed and condensed into a large air flow to flow out, changing the flow rate of the air flow generated by the fan, rather than relying on the rotation speed adjustment of the motor, and ensuring that the fan provides air flows with different flow rates to match the air flow in the air and then adjusts the air volume.

[0023] 2. In the utility model, by loosening the second knob b, the outer ring can rotate, so that the user can hold the top air duct to adjust the angle. After adjustment, tighten the second knob b to fix the rotation angle of the top air duct, thus realizing that by adjusting the angle of the fan, the direction and range of air flow can be changed more effectively.

[0024] 3. In the utility model, the four corners of the bracket are fixed to the ball, and the ball is fixed to the four corners of the ring block. The ball itself is elastic, so that the elastic potential energy of the ball itself can buffer the vibration transmitted by the fan through the bracket, thereby reducing the influence of the vibration during the operation of the fan on the overall fan and effectively reducing the noise. Description of the Drawings

[0025] Figure 1 A three-dimensional schematic diagram of a fan for increasing air volume by using the entrainment effect proposed by the utility model;

[0026] Figure 2 A structural schematic diagram of a fan for increasing air volume by using the entrainment effect proposed by the utility model;

[0027] Figure 3 A structural schematic diagram of a fan for increasing air volume by using the entrainment effect proposed by the utility model;

[0028] Figure 4 A structural schematic diagram of a fan for increasing air volume by using the entrainment effect proposed by the utility model;

[0029] Figure 5 A structural schematic diagram of a fan for increasing air volume by using the entrainment effect proposed by the utility model;

[0030] Figure 6 Schematic structural diagram of a fan that increases air volume by using the ejector effect proposed by the present utility model;

[0031] Figure 7 Schematic structural diagram of a fan that increases air volume by using the ejector effect proposed by the present utility model;

[0032] Figure 8 Schematic structural diagram of a fan that increases air volume by using the ejector effect proposed by the present utility model.

[0033] Legend description:

[0034] 1. Base; 2. Heat dissipation port; 3. Interface; 4. Ring block; 5. Through hole; 6. Ball; 7. Bracket; 8. Fan; 9. Fixed block; 10. Bottom plate; 11. Hole 1; 12. Hole 2; 13. Curved block; 14. Outer cylinder; 15. Groove; 16. Air window; 17. Ring groove; 18. Inner air cylinder; 19. Limit rod; 20. Rotating rod 1; 21. Blade; 22. Rotating rod 2; 23. Control ring; 24. Limit block; 25. Slide block; 26. Connecting block; 27. Adjustment switch; 28. Knob 2a; 29. Outer ring; 30. Knob 2b; 31. Top air duct; 32. Square frame; 33. Mounting hole; 34. Rotating blade; 35. Connecting plate; 36. Knob 3. Specific implementation manners

[0035] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0036] Referring to Figures 1 - 3 , an embodiment provided by the present utility model: A fan that increases air volume by using the ejector effect includes a base 1 and a bottom plate 10. Four heat dissipation ports 2 are opened on the outside of the base 1. An interface 3 is opened on the front side of the left end of the base 1. The interface 3 is an external power supply interface and can be externally connected to a power supply. A ring block 4 is fixedly connected inside the base 1. The external holes of the ring block correspond to the heat dissipation ports 2. Through holes 5 are opened at the four corners of the top of the ring block 4. Balls 6 are fixedly connected inside the through holes 5. The through holes 5 can install the balls 6. The external tops of the four balls 6 are fixedly connected with brackets 7. The bottom ends of the brackets 7 are in contact with the bottom end of the bottom plate 10.

[0037] The bottom end of the bracket 7 is fixedly connected with a fan 8, and the outside of the fan 8 is engaged with the inner wall of the ring block 4. The elastic potential energy of the ball 6 itself will buffer the vibration transmitted from the bracket 7, thereby reducing the impact of the vibration of the fan 8 on the base 1 when it is in operation. The four corners of the base 1 are fixedly connected with fixed blocks 9, and the outside of the bottom plate 10 is engaged with the top of the inner wall of the base 1. The four corners of the top of the bottom plate 10 are provided with holes 11, and the top of the bottom plate 10 is provided with multiple holes 2 12. The holes 11 correspond to the holes of the fixed blocks 9, and the bottom plate 10 can be fixed to the base 1 by bolts.

[0038] refer to Figures 4 to 6 Four curved blocks 13 are fixedly connected to the top of the bottom plate 10, and an outer cylinder 14 is fixedly connected to the top of the curved block 13. The curved block 13 is fixed to the outer edge of the bottom end of the outer cylinder 14, and holes are provided at both ends of the curved block 13, which correspond to the second hole 12 and can be fixed by bolts. The bottom end of the outer cylinder 14 contacts the top of the bottom plate 10, and a plurality of grooves 15 are provided on the outside of the outer cylinder 14. The grooves 15 are located in the middle of the outer cylinder, and the grooves have a guiding function, so that the internal components can be connected to the external components.

[0039] The outer tube 14 is provided with air windows 16 at the four corners of the bottom end. The air windows 16 are provided at the edge of the bottom curved block 13 of the outer tube, and are used to attract external air into the interior of the outer tube 14. The outer top end of the outer tube 14 is provided with an annular groove 17 for connecting with the upper end component. An inner wind tube 18 is fixed in the middle of the bottom plate 10, and the airflow of the packaging fan 8 can flow upward through the inner wind tube.

[0040] The outside of the inner air cylinder 18 is provided with a rotating component for adjusting the air volume, and the rotating component includes multiple limit rods 19, multiple rotating rods 1 20, multiple blades 21, multiple rotating rods 22, multiple control rings 23, multiple limit blocks 24, multiple sliders 25, and six connecting blocks 26. The outside of the inner air cylinder 18 is fixedly connected with multiple limit rods 19, and the inner wall of the top end of the limit rod 19 is rotatably connected with a rotating rod 1 20. The top end of the rotating rod 1 20 is fixedly connected with a blade 21, and the bottom end of the blade 21 is slidably connected to the top end of the inner air cylinder 18. The bottom end of the rotating rod 1 20 is rotatably connected with a rotating rod 22. The rotating rod 22 drives the rotating rod 1 20 to rotate and pull the blade 21 to rotate and expand or contract with the top end of the inner air cylinder 18 as the center, and the blade 21 has two types of blades 21 of different sizes, which are staggered around the top end of the inner air cylinder 18.

[0041] The expansion or contraction of the blade 21 will change the high-speed air flow at the outlet of the inner air duct 18, and the external air flow entering the inner air duct through the air window will be driven by the high-speed air flow of the inner air duct 18. The two air flows are mixed to produce an entrainment reaction, changing the flow velocity of the air flow. Finally, the mixed air flow will be sent out together at the position of the top component. The entrainment effect (also known as the entrainment or jet effect) mentioned here is a hydrodynamic phenomenon that uses a high-speed flowing fluid to introduce or drive a low-speed fluid to achieve the effect of mixing or accelerating.

[0042] A control ring 23 is slidably connected to the outside of a plurality of limit rods 19. A plurality of limit blocks 24 are fixedly connected to the inside of the control ring 23. A plurality of sliders 25 are fixedly connected to the outside of the control ring 23. The outside of the sliders 25 is slidably connected to the inner wall of the limit rods 19. The stable sliding of the control ring 23 is realized by the sliders 25 sliding in the grooves of the limit rods 19. The bottom end of the second rotating rod 22 is rotatably connected to the outside of the sliders 25. Six connecting blocks 26 are fixedly connected to the bottom end of the control ring 23. The connecting blocks 26 are aligned with the grooves 15 and fixed to the bottom end of the control ring 23. An adjustment switch 27 is fixedly arranged on the front side of the top end of the bottom plate 10. The left end of one of the connecting blocks 26 penetrates through the outer cylinder 14 and is fixedly connected to a second knob a 28.

[0043] Sliding the second knob a 28 in the groove 15 will drive the connecting block 26 to pull the control ring 23 to slide up and down outside the limit rod 19, and the control ring 23 will drive the second rotating rod 22 to rotate through the limit block 24. The rotation of the second rotating rod 22 will drive the first rotating rod 20 rotatably fixed to the limit block 24 to rotate. After the first rotating rod 20 rotates, it will rotate around the top end of the limit rod 19 and pull the blade 21 to rotate and expand or contract around the top end of the inner air duct 18, so that the air flow after the fan 8 is started passes through the opening of the inner air duct 18 and cooperates with the rotation of the blade 21 to open and close, adjusting the size of the air flow at the top opening of the inner air duct 18. The adjustment switch 27 is electrically connected to the fan 8, and the adjustment switch 27 controls the start of the fan 8.

[0044] Reference Figure 7 、 Figure 8 On the inner wall of the annular groove 17, an outer ring 29 is slidably connected. A second knob b 30 is arranged on the front side of the outside of the outer ring 29. A top air duct 31 is fixedly connected to the top end of the outer ring 29. A square frame 32 is fixedly connected to the left end of the top air duct 31. By loosening the second knob b 30, the outer ring 29 can be rotated, so that the user can hold the top air duct 31 to adjust the angle. After adjustment, tighten the second knob b 30 to fix the left and right rotation angles of the top air duct 31.

[0045] Mounting holes 33 are provided on both the front and rear sides of the square frame 32. Two of the mounting holes 33 are internally rotatably connected with rotating blades 34. The left and right sides of the rotating blades 34 are slidably connected to the front and rear sides of the inner wall of the square frame 32. The front and rear sides of the right end of the rotating blades 34 are rotatably connected with connecting plates 35. The front side of the bottom rotating blade 34 is fixedly connected with a knob three 36. Rotating the knob three 36 at the bottom of the rotating blade 34, because the connecting plates 35 connect multiple rotating blades 34, so when the knob three 36 is rotated, the rotating blades 34 can be driven to rotate the blades 21, adjusting the up and down angle of the air flow. The rear side of the knob three 36 is rotatably connected to the front side outside the square frame 32 to keep the knob three 36 rotating stably.

[0046] Working principle: When in use, start the fan 8 in the base 1 by rotating the adjustment switch 27 through the support 7, and then cooperate with the sliding of the knob two a 28 in the groove 15, so as to drive the connecting block 26 to pull the control ring 23 to slide up and down outside the limiting rod 19, and let the control ring 23 drive the rotating rod two 22 to rotate through the limiting block 24. The rotation of the rotating rod two 22 will drive the rotating rod one 20 fixedly connected to the limiting block 24 to rotate, and after the rotating rod one 20 rotates, it will rotate around the top end of the limiting rod 19, and pull the blade 21 to rotate and expand or contract around the top end of the inner air duct 18, so that the air flow after the fan 8 is started passes through the opening of the inner air duct 18 and cooperates with the rotation of the blade 21 to open and close, adjusting the size of the air flow at the top opening of the inner air duct 18. And at the same time, because the opening and closing of the blade 21 will change the high-speed air flow at the outlet of the inner air duct 18, and the air flow entering the outside of the inner air duct from the air window will be driven by the high-speed air flow of the inner air duct 18, the two air flows are mixed and an entrainment reaction occurs, thereby changing the flow rate of the air flow. Finally, the mixed air flow will be sent to the position of the top air duct 31 at the top and flow out, effectively increasing the adjustment of the wind speed and air volume.

[0047] When the direction of the fan needs to be adjusted, the user can loosen the knob two b 30 to make the outer ring 29 rotatable, so that the user can hold the top air duct 31 to adjust the angle. After adjustment, tighten the knob two b 30 to fix the rotation angle of the top air duct 31, thereby realizing the adjustment of the blowing direction of the fan.

[0048] During the start-up process of the fan 8, during the operation of the fan 8, it will generate vibration by itself, which will drive the support 7 fixed to the top of the fan 8 to slide up and down. At this time, since the four corners of the support 7 are fixed to the balls 6, the balls 6 are fixed to the four corners of the ring block 4, and the balls 6 are elastic by themselves, so when the fan 8 generates vibration, the vibration of the fan 8 will be transmitted to the balls 6 through the support 7, and the elastic potential energy of the balls 6 themselves will buffer the vibration transmitted by the support 7, thereby reducing the influence of the vibration during the operation of the fan 8 on the base 1 and effectively reducing the noise.

[0049] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A fan that increases the air volume by means of entrainment, comprising a base (1) and a bottom plate (10), characterized in that: Four heat dissipation ports (2) are provided on the outside of the base (1). An interface (3) is provided on the front side of the left end of the base (1). A ring block (4) is fixedly connected inside the base (1). Through holes (5) are provided at the four corners of the top end of the ring block (4). Balls (6) are fixedly connected inside the through holes (5). A support (7) is fixedly connected to the outer top ends of the four balls (6). A fan (8) is fixedly connected to the bottom end of the support (7). Fixed blocks (9) are fixedly connected to the four corners inside the base (1). Holes one (11) are provided at the four corners of the top end of the bottom plate (10). A plurality of holes two (12) are provided on the top end of the bottom plate (10). Four curved blocks (13) are fixedly connected to the top end of the bottom plate (10). An outer cylinder (14) is fixedly connected to the top end of the curved block (13). A plurality of grooves (15) are provided on the outside of the outer cylinder (14). Air windows (16) are provided at the four corners of the bottom end of the outer cylinder (14). A ring groove (17) is provided on the outer top end of the outer cylinder (14). An inner air cylinder (18) is fixed in the middle of the bottom plate (10). A rotating assembly for adjusting the air volume is provided on the outside of the inner air cylinder (18).

2. The fan for increasing air volume by using the ejector effect according to claim 1, wherein: The rotating assembly includes a plurality of limiting rods (19), a plurality of first rotating rods (20), a plurality of blades (21), a plurality of second rotating rods (22), a plurality of control rings (23), a plurality of limiting blocks (24), a plurality of sliders (25), and six connecting blocks (26). A plurality of limiting rods (19) are fixedly connected to the outside of the inner air cylinder (18). The inner wall of the top end of the limiting rod (19) is rotatably connected to a first rotating rod (20). A blade (21) is fixedly connected to the top end of the first rotating rod (20). The bottom end of the first rotating rod (20) is rotatably connected to a second rotating rod (22). A control ring (23) is slidably connected to the outside of the plurality of limiting rods (19). A plurality of limiting blocks (24) are fixedly connected to the inside of the control ring (23). A plurality of sliders (25) are fixedly connected to the outside of the control ring (23). Six connecting blocks (26) are fixedly connected to the bottom end of the control ring (23). An adjustment switch (27) is fixedly arranged on the front side of the top end of the bottom plate (10). The left end of one of the connecting blocks (26) penetrates through the outer cylinder (14) and is fixedly connected to a knob two a (28).

3. The fan for increasing air volume by using the ejector effect according to claim 1, wherein: An outer ring (29) is slidably connected to the inner wall of the ring groove (17). A knob two b (30) is provided on the front side of the outside of the outer ring (29). A top air duct (31) is fixedly connected to the top end of the outer ring (29). A square frame (32) is fixedly connected to the left end of the top air duct (31). Mounting holes (33) are provided on the front and back sides of the square frame (32). Two of the mounting holes (33) are rotatably connected to rotating blades (34). Connecting plates (35) are rotatably connected to the front and back sides of the right end of the rotating blade (34). A knob three (36) is fixedly connected to the front side of the bottom rotating blade (34).

4. A fan that increases the air volume by means of entrainment according to claim 1, characterized in that: The bottom end of the bracket (7) is in contact with the bottom end of the bottom plate (10), and the outside of the fan (8) is engaged with the inner wall of the ring block (4).

5. The fan for increasing air volume by means of entrainment according to claim 1, wherein: The bottom end of the outer cylinder (14) is in contact with the top end of the bottom plate (10), and the outside of the bottom plate (10) is engaged with the inner wall top end of the base (1).

6. The fan for increasing air volume by means of entrainment according to claim 2, characterized in that: The bottom end of the blade (21) is slidably connected to the top end of the inner air cylinder (18), and the bottom end of the second rotating rod (22) is rotatably connected to the outside of the slider (25).

7. The fan for increasing air volume by ejector action according to claim 2, wherein: The outside of the slider (25) is slidably connected to the inner wall of the limiting rod (19), and the adjustment switch (27) is in telecommunication connection with the fan (8).

8. The fan for increasing air volume by using the ejector effect according to claim 3, wherein: The rear side of the third knob (36) is rotatably connected to the front side outside of the square frame (32), and the left and right sides of the rotating blade (34) are slidably connected to the front and rear sides of the inner wall of the square frame (32).

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