Air inlet control device of fan

Abstract

The utility model provides an air inlet control device which acts on a draught fan, the draught fan is provided with a draught fan air inlet, and the air inlet control device comprises an air inlet channel which is communicated with the draught fan air inlet of the draught fan; the air inlet channel comprises a plurality of channel assemblies; and the two ends of the narrow opening part communicate with the channel assembly so that the gas flow speed in the air inlet channel can be increased, and the air inlet control device is connected with a fan air inlet of the fan so that gas can be conveyed into the fan. The air inlet channel is provided with the narrow opening part, the two ends of the narrow opening part are communicated with the channel assembly respectively, and the narrow opening part is arranged close to the air inlet of the fan, so that the air flow speed of the fan is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal fans, and more specifically, to an air inlet control device. Background Art

[0002] With the wide application of centrifugal fans, there are also many problems in the air inlet control of centrifugal fans. For example, the air inlet speed is slow, and the use effect is not good during actual use. Therefore, it is very necessary to provide an air inlet control device to improve the air flow rate of the fan. Summary of the Utility Model

[0003] Therefore, the utility model provides an air inlet control device to improve the air flow rate of the fan.

[0004] To solve the above problems, the utility model provides an air inlet control device. The air inlet control device acts on a fan, and the fan is provided with a fan air inlet. The air inlet control device includes: an air inlet passage, and the air inlet passage is in communication with the fan air inlet of the fan; the air inlet passage includes: a passage component, and there are multiple passage components; a narrow port part, and both ends of the narrow port part are respectively in communication with the passage components to increase the gas flow rate in the air inlet passage.

[0005] Compared with the prior art, the technical effect achieved by adopting this technical solution is that the air inlet control device is connected to the fan air inlet of the fan, so as to convey gas into the fan. The air inlet passage is provided with a narrow port part, and both ends of the narrow port part are respectively in communication with the passage components, and the narrow port part is arranged close to the fan air inlet, thereby increasing the gas flow rate of the fan.

[0006] Further, the passage components can be connected to or separated from each other to adjust the length of the air inlet passage.

[0007] Compared with the prior art, the technical effect achieved by adopting this technical solution is that the air inlet passage is provided with multiple passage components, and the passage components are in communication with each other to form the air inlet passage. The passage components can be in communication with or separated from each other to adjust the length of the air inlet passage, so that the air inlet control device can be adapted to a variety of fans and improve the practicability of the air inlet control device.

[0008] Further, the passage component includes: a flange part, and the flange part is arranged on the circumferential side of the end of the passage component, and the flange part extends away from the passage component.

[0009] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: A flange portion is provided on the peripheral side of the channel component. When assembling the channel components, two adjacent channel components approach each other, enabling the flange portions of the channel components to fit together, facilitating the connection of the two channel components. Through holes are provided on the flange portion, and the two channel components are fixedly connected to each other through fasteners, increasing the reliability of the connection.

[0010] Further, the air inlet channel includes: an air inlet, which is provided at one end of the air inlet channel away from the fan; wherein, the air inlet is arranged along the horizontal direction and has an inclination angle in the vertical direction.

[0011] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: The air inlet is arranged along the horizontal direction and has an inclination angle in the horizontal direction, preventing foreign objects from falling into the air inlet channel through the air inlet and blocking the air inlet channel, and improving the stability of the use of the air inlet control device.

[0012] Further, the air inlet channel includes: an arc portion, which is arranged close to the air inlet.

[0013] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: The arc portion is arranged close to the air inlet, avoiding the generation of gas vortices at the air inlet, improving the fluidity of the gas, enhancing the stability of the air inlet control device, and being more stable during actual use.

[0014] Further, the air inlet includes: an air inlet grille, which is fixed on the air inlet and covers the air inlet.

[0015] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: An air inlet grille is provided at the air inlet to isolate foreign objects with a relatively large volume, prevent foreign objects from blocking the air inlet channel, and improve the stability of the air inlet control device.

[0016] Further, the air inlet control device further includes: a flow velocity detection device, which is arranged on the air inlet channel to detect the gas flow velocity in the air inlet channel.

[0017] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: The flow velocity detection device is arranged on the air inlet channel to detect the gas flow velocity in the air inlet channel, facilitating the staff to master the gas flow velocity in the air inlet control device and facilitating the control of the gas flow velocity during actual application.

[0018] Further, the air inlet control device further includes: a channel support, which abuts against the air inlet channel to support the air inlet channel.

[0019] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: The channel support abuts against the air inlet channel, enabling the channel support to support the air inlet channel and prevent the air inlet channel from tipping over, enhancing the safety of the air inlet control device and preventing danger during use.

[0020] Furthermore, the air inlet control device includes: a fan support, and the motor support is detachably connected to the fan.

[0021] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: The fan support is detachably connected to the fan, enabling the fan to be fixed on the fan support, facilitating the determination of the fan's installation position, and making the fan more stable, avoiding displacement of the fan and affecting the air inlet effect of the fan.

[0022] After adopting the technical solution of the present utility model, the following technical effects can be achieved:

[0023] (1) The air inlet control device is connected to the air inlet of the fan, thereby delivering gas into the fan. The air inlet channel is provided with a narrow mouth part, and both ends of the narrow mouth part are respectively connected to the channel components. Moreover, the narrow mouth part is arranged close to the air inlet of the fan, thereby increasing the air inlet flow rate of the fan;

[0024] (2) The air inlet channel is provided with multiple channel components, which are interconnected to form the air inlet channel. The channel components can be interconnected or separated from each other, thereby adjusting the length of the air inlet channel, enabling the air inlet control device to adapt to various fans and enhancing the practicality of the air inlet control device;

[0025] (3) The circumferential side of the channel component is provided with a flange part. When assembling the channel components, two adjacent channel components approach each other, enabling the flange parts of the channel components to fit together, facilitating the connection of the two channel components to each other. The flange part is provided with through holes, and the two channel components are fixedly connected to each other through fasteners, increasing the reliability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 FIG. is a schematic structural diagram of an air inlet control device provided by an embodiment of the present utility model;

[0027] Figure 2 FIG. is a schematic structural diagram of the second perspective of the air inlet control device;

[0028] Figure 3 FIG. is Figure 2 an enlarged view of area A in FIG.

[0029] Figure 4 FIG. is a schematic structural diagram of the third perspective of the air inlet control device;

[0030] Figure 5It is a partial schematic diagram of the air intake control device.

[0031] Explanation of reference numerals:

[0032] 100: Fan; 200: Air intake control device; 210: Air intake channel; 211: Channel assembly; 211a: Flange part; 212: Narrow opening part; 213: Air intake port; 213a: Air intake grille; 214: Arc part; 215: Flow velocity detection device; 215a: Upstream detection part; 215b: Downstream detection part; 220: Channel support; 230: Fan support. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0034] An embodiment of the present invention provides an air intake control device 200, which acts on a fan 100. The fan 100 is provided with a fan air intake port. The air intake control device 200 includes: an air intake channel 210, and the air intake channel 210 is in communication with the fan air intake port of the fan 100; the air intake channel 210 includes: a channel assembly 211, and a plurality of channel assemblies 211 are provided; a narrow opening part 212, and both ends of the narrow opening part 212 are respectively in communication with the channel assembly 211 to increase the gas flow velocity in the air intake channel 210.

[0035] For example, as shown in the attached Figure 1 figure, the air intake control device 200 is connected to the fan air intake port of the fan 100, so as to convey gas into the fan 100. The air intake channel 210 is provided with a narrow opening part 212. Both ends of the narrow opening part 212 are respectively in communication with the channel assembly 211, and the narrow opening part 212 is arranged close to the fan air intake port of the fan 100, thereby increasing the gas velocity of the fan 100.

[0036] For example, the channel assemblies 211 can be connected to or separated from each other to adjust the length of the air intake channel 210.

[0037] For example, as shown in the attached Figure 1 figure, the air intake channel 210 is composed of a plurality of channel assemblies 211. The channel assemblies 211 can be in communication with or separated from each other, so as to adjust the length of the air intake channel 210, so that the air intake control device 200 can be adapted to a variety of fans 100 and improve the practicability of the air intake control device 200.

[0038] For example, the channel component 211 includes a flange portion 211a. The flange portion 211a is provided on the circumferential side of the end of the channel component 211, and the flange portion 211a extends away from the channel component 211.

[0039] For illustration, as shown in the Figure 1 drawing, flange portions 211a are provided at both ends of the channel component 211, and the flange portions 211a extend away from the channel component 211. When assembling the channel component 211, two connected channel components 211 approach each other, so that the flange portions 211a of the channel components 211 can fit together, facilitating the connection of the two channel components 211. Through holes are provided on the flange portions 211a, and the two channel components 211 are fixedly connected to each other through fasteners, increasing the reliability of the connection.

[0040] Specifically, the air inlet channel 210 includes an air inlet 213. The air inlet 213 is provided at one end of the air inlet channel 210 away from the fan 100. Among them, the air inlet 213 is arranged in the horizontal direction, and the air inlet 213 has an inclination angle in the horizontal direction.

[0041] Specifically, as shown in the Figure 1 drawing, the air inlet channel 210 is provided with an air inlet 213. And, as shown in the Figure 4 drawing, the air inlet 213 is arranged in the horizontal direction and has an inclination angle in the horizontal direction. The inclination angle is α, which prevents foreign objects from falling into the air inlet channel 210 through the air inlet 213 and blocking the air inlet channel 210, improving the stability of the air inlet control device 200 during use.

[0042] For example, the air inlet channel 210 includes an arc portion 214. The arc portion 214 is arranged close to the air inlet 213.

[0043] For illustration, as shown in the Figure 1 drawing, the arc portion 214 is arranged close to the air inlet 213, avoiding the generation of gas vortices at the air inlet 213, improving the fluidity of the gas, and improving the stability of the air inlet control device 200, making it more stable during actual use.

[0044] For example, the air inlet 213 includes an air inlet grille 213a. The air inlet grille 213a is fixed on the air inlet 213, and the air inlet grille 213a covers the air inlet 213.

[0045] For illustration, as shown in the Figure 2 drawing and the Figure 3 drawing, an air inlet grille 213a is provided at the air inlet 213. The air inlet grille 213a covers the air inlet 213, used to isolate foreign objects with larger volumes, prevent foreign objects from blocking the air inlet channel 210, and improve the stability of the air inlet control device 200.

[0046] Specifically, the air inlet passage 210 further includes a flow velocity detection device 215 disposed on the air inlet passage 210 to detect the gas flow velocity in the air inlet passage 210.

[0047] Specifically, as shown in the appendix Figure 1 The air inlet passage 210 is provided with a flow velocity detection device 210 to detect the gas flow velocity in the air inlet passage 210, facilitating the staff to master the gas flow velocity in the air inlet control device 200 and facilitating the control of the gas flow velocity during actual application.

[0048] Preferably, the flow velocity detection device 215 is a flow velocity sensor for detecting the gas flow velocity in the air inlet passage 210.

[0049] Supplementary explanation, as shown in the appendix Figure 5 As shown, V represents the air volume, A1 is the upstream cross-sectional area, A2 is the downstream cross-sectional area, ρ represents the air density, k is a calculation constant, and ΔP is the pressure difference between the upstream detection element 215a and the downstream detection element 215b. Then the air volume calculation formula is: ;

[0050] The calculation formula for the calculation constant k is: .

[0051] For example, ΔP = P 1 -P 2 , where P 1 is the pressure value measured by the upstream detection element 215a, and P 2 is the pressure value measured by the downstream detection element 215b; for example, the pressure value of P 1 is 517 Pa, and the pressure value of P 2 is 70.5 Pa. Therefore, ΔP is equal to 446.5 Pa.

[0052] According to the above air volume calculation formula, .

[0053] For example, the air inlet control device 200 further includes a channel support 220. The channel support 220 abuts against the air inlet passage 210 so that the channel support 220 supports the air inlet passage 210.

[0054] For example, as shown in the appendix Figure 1 The air inlet control device 200 is provided with a channel support 220. The channel support 220 abuts against the air inlet passage 210 so that the channel support 220 can support the air inlet passage 210, prevent the air inlet passage 210 from tipping over, increase the safety of the air inlet control device 200, and prevent danger during use.

[0055] For example, the air inlet control device 200 includes a fan bracket 230, and the motor bracket 230 is detachably connected to the fan 100.

[0056] For example, as shown Figure 1 in the figure, the air inlet control device 200 is provided with a fan bracket 230. The fan bracket 230 is detachably connected to the fan 100. The fan 100 can be fixed on the fan bracket 230, which is convenient for determining the installation position of the fan 100. Moreover, the fan 100 is fixed more stably, avoiding displacement of the fan 100 and affecting the air inlet effect of the fan 100.

[0057] Supplementary description: The air inlet control device 200 is provided with an air inlet 213. The gas enters the air inlet passage 210 through the air inlet 213. The gas passes through the narrow part 212, which increases the flow rate of the gas, and then enters the fan 100 through the fan air inlet, and finally flows out through the fan air outlet.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An air intake control device, characterized in that: The air inlet control device (200) acts on the fan (100), the fan (100) is provided with a fan air inlet, and the air inlet control device (200) comprises: An air inlet channel (210), the air inlet channel (210) being in communication with a fan air inlet of the fan (100); The air inlet channel (210) comprises: A channel assembly (211), wherein a plurality of the channel assemblies (211) are provided; A narrow mouth portion (212), wherein both ends of the narrow mouth portion (212) are respectively connected to the channel assembly (211), so as to increase the gas flow rate in the air inlet channel (210).

2. The air inlet control device according to claim 1, characterized in that: The channel components (211) can be connected to or separated from each other to adjust the length of the air inlet channel (210).

3. The air inlet control device according to claim 2, characterized in that: The channel component (211) comprises: A flange portion (211a) is provided on the peripheral side of the end portion of the channel assembly (211), and the flange portion (211a) extends in a direction away from the channel assembly (211).

4. The air inlet control device according to claim 1, characterized in that: The air inlet channel (210) comprises: An air inlet (213), the air inlet (213) being arranged at an end of the air inlet channel (210) away from the fan (100); The air inlet (213) is arranged in a horizontal direction, and the air inlet (213) has an inclination angle in the horizontal direction.

5. The air inlet control device according to claim 4, characterized in that: The air inlet channel (210) comprises: An arc portion (214), wherein the arc portion (214) is arranged close to the air inlet (213).

6. The air inlet control device according to claim 4, characterized in that: The air inlet (213) comprises: An air inlet grille (213a), wherein the air inlet grille (213a) is fixed on the air inlet (213), and the air inlet grille (213a) covers the air inlet (213).

7. The air inlet control device according to claim 2, characterized in that: The air inlet channel (210) further comprises: A flow rate detection device (215), wherein the flow rate detection device (215) is arranged on the air inlet channel (210) to detect the gas flow rate in the air inlet channel (210).

8. The air inlet control device according to claim 1, characterized in that: The air intake control device (200) further comprises: A channel support (220), wherein the channel support (220) and the air inlet channel (210) abut against each other, so that the channel support (220) supports the air inlet channel (210).

9. The air inlet control device according to claim 8, characterized in that: The air intake control device (200) comprises: A fan bracket (230), wherein the fan bracket (230) is detachably connected to the fan (100).

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