Centrifugal fan box with noise reduction function

Abstract

The utility model relates to a centrifugal fan case with a noise reduction function, which belongs to the technical field of centrifugal fans and comprises a case body, and a bottom shell is arranged below the case body. A noise reduction structure is arranged on the bottom shell; the noise reduction structure comprises a water bag placed in the bottom shell and a water tank installed on the bottom shell, a water pump is installed at the top of the water tank, a first water pipe communicated with the interior of the water tank is installed at the input end of the water pump, and a second water pipe communicated with the interior of the water bag is installed at the output end of the water pump. And a chassis is mounted at the bottom of the case body and is mounted on the water bag. The noise reduction structure is arranged, the water pump is started to fill the water in the water tank into the water bag, so that the water bag is pressurized, the effect of supporting the case body is achieved, then the driving motor on the centrifugal fan is started for normal operation, friction noise generated between the case body and the ground is avoided as much as possible, and the purpose of noise reduction is achieved.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal fan technology, and specifically to a centrifugal fan box with noise reduction function. Background Technology

[0002] Centrifugal fans are machines that rely on input mechanical energy to increase gas pressure and discharge gas. They operate on the principle of converting kinetic energy into potential energy, using a high-speed rotating impeller to accelerate the gas, then decelerate and change its flow direction, thus converting kinetic energy into potential energy.

[0003] During the operation of the centrifugal fan, the start-up drive motor causes the fan blades to rotate at high speed. During this process, the centrifugal fan is subjected to high-frequency vibration, which causes the bottom of the centrifugal fan box to rub against the ground continuously, thus generating a large amount of noise.

[0004] To address the aforementioned issues, this application proposes a centrifugal fan box with noise reduction functionality. Utility Model Content

[0005] This utility model addresses the technical problems existing in the prior art by providing a centrifugal fan box with noise reduction function.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: a centrifugal fan box with noise reduction function, including a box body, and a bottom shell is provided below the box body;

[0007] The bottom shell is equipped with a noise reduction structure;

[0008] The noise reduction structure includes a water bladder placed inside the bottom shell and a water tank installed on the bottom shell. A water pump is installed on the top of the water tank. A first water pipe connected to the inside of the water tank is installed at the input end of the water pump. A second water pipe connected to the inside of the water bladder is installed at the output end of the water pump. A chassis is installed at the bottom of the chassis body and the chassis is installed on the water bladder.

[0009] A support structure is provided on the bottom shell.

[0010] The top of the water tank is connected to a water inlet pipe, and a threaded cap is threaded onto the water inlet pipe. The water inlet pipe facilitates the filling of water into the water tank, and the threaded cap is used to seal the top of the water inlet pipe.

[0011] The support structure includes a slot on the chassis and a hydraulic rod mounted on the bottom shell. The telescopic end of the hydraulic rod is equipped with a plug, which is adapted to the slot. By setting up the support structure, the chassis and the centrifugal fan box are supported.

[0012] The bottom shell has a sliding groove, and a slider is slidably connected to the bottom shell through the sliding groove. The insert is installed on the slider. The sliding groove and the slider are used to support the insert.

[0013] The slider is convex in shape.

[0014] The system includes four slots, four hydraulic rods, four inserts, four sliding grooves, and four sliders, designed to facilitate easier support of the chassis and centrifugal fan housing.

[0015] The beneficial effects of this utility model are:

[0016] By setting up a noise reduction structure and starting the water pump, the water in the water tank is filled into the water bladder, thereby pressurizing the water bladder and supporting the main body of the machine. Then, the drive motor on the centrifugal fan is started for normal operation, which minimizes the friction noise between the main body of the machine and the ground and achieves the purpose of noise reduction.

[0017] By setting up a support structure, when the water pump is started to gradually extract water from the water bladder and gradually reduce the pressure inside the water bladder, the hydraulic rod is activated, causing its telescopic end to drive the insert block to re-insert into the slot, thereby achieving the effect of supporting the chassis and the main body of the chassis. Attached Figure Description

[0018] Figure 1 This is a schematic diagram illustrating the overall structure of the device.

[0019] Figure 2 This utility model is a cross-sectional schematic diagram showing the internal structure of the bottom shell;

[0020] Figure 3 This utility model is shown as a cross-sectional schematic diagram of the supporting structure;

[0021] Figure 4 This utility model Figure 3 Enlarged view of point A in the middle.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Chassis body;

[0024] 2. Bottom shell;

[0025] 3. Noise reduction structure; 301. Water bladder; 302. Water tank; 303. Water pump; 304. First water pipe; 305. Second water pipe; 306. Inlet pipe; 307. Threaded cap; 308. Chassis;

[0026] 4. Support structure; 401. Hydraulic rod; 402. Insert block; 403. Slot; 404. Slide groove; 405. Slider. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0029] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to implement and use the present invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the present invention can be implemented without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the present invention with unnecessary detail. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0030] Reference Figure 1 and Figure 2A centrifugal fan casing with noise reduction function includes a casing body 1, a bottom shell 2 located below the casing body 1, and a noise reduction structure 3 mounted on the bottom shell 2. The noise reduction structure 3 includes a water bladder 301 placed inside the bottom shell 2 and a water tank 302 mounted on the bottom shell 2. The water tank 302 is filled with water, and a water pump 303 is mounted on the top of the water tank 302. The input end of the water pump 303 is connected to a first water pipe 304 communicating with the inside of the water tank 302, and the output end of the water pump 303 is connected to a second water pipe 305 communicating with the inside of the water bladder 301. A chassis 3 is mounted on the bottom of the casing body 1. 08. The chassis 308 is mounted on the water bladder 301. It should be noted that the water bladder 301 is filled with water for a long time. According to the above technical solution, specifically, by starting the water pump 303, the water in the water tank 302 is transferred to the second water pipe 305 through the first water pipe 304, and then the second water pipe 305 fills the water bladder 301, thereby pressurizing the water bladder 301 and thus achieving the effect of supporting the chassis body 1. Subsequently, the drive motor on the centrifugal fan is started for normal operation, which minimizes the friction noise between the chassis body 1 and the ground and achieves the purpose of noise reduction.

[0031] Reference Figure 1 The top of the water tank 302 is connected to a water inlet pipe 306, which facilitates the filling of water into the water tank 302. A threaded cap 307 is threadedly connected to the water inlet pipe 306, which is used to seal the top of the water inlet pipe 306.

[0032] Reference Figure 1 , Figure 3 and Figure 4 A support structure 4 is provided on the bottom shell 2. The support structure 4 includes slots 403 opened on the chassis 308 and hydraulic rods 401 installed on the bottom shell 2. The telescopic end of the hydraulic rod 401 is equipped with a plug 402. The plug 402 is adapted to the slot 403. There are four slots 403, four hydraulic rods 401, four plugs 402, four slides 404, and four sliders 405. After the noise reduction structure 3 is activated, the hydraulic rod 401 is activated, so that its telescopic end drives the plug 402 to move, so that the plug 402 is disengaged from the slot 403 and moves away from the chassis 308. Then, the water pump 303 is activated to gradually extract the water in the water bag 301. During the process of gradually depressurizing the water bag 301, the hydraulic rod 401 is activated, so that its telescopic end drives the plug 402 to re-insert into the slot 403, thereby achieving the effect of supporting the chassis 308 and the chassis body 1.

[0033] Reference Figure 3The bottom shell 2 has a sliding groove 404, and a slider 405 is slidably connected to the bottom shell 2 through the sliding groove 404. The insert block 402 is installed on the slider 405. The slider 405 is convex in shape and slides in the sliding groove 404 to support the insert block 402. This will reduce the force on the hydraulic rod 401 when the insert block 402 supports the chassis 308.

[0034] Working principle:

[0035] The centrifugal fan housing with noise reduction function works by starting the water pump 303, which transfers water from the water tank 302 to the second water pipe 305 through the first water pipe 304, and then fills the water bladder 301 through the second water pipe 305, thereby pressurizing the water bladder 301 and supporting the housing body 1. Then, the drive motor on the centrifugal fan is started for normal operation, minimizing friction noise between the housing body 1 and the ground, thus achieving the purpose of noise reduction.

[0036] The centrifugal fan housing with noise reduction function, after the noise reduction structure 3 is activated, activates the hydraulic rod 401, causing its telescopic end to move the insert 402, so that the insert 402 disengages from the slot 403 and moves away from the chassis 308. Then, the water pump 303 is activated to gradually extract the water from the water bladder 301. During the process of gradually reducing the pressure in the water bladder 301, the hydraulic rod 401 is activated, causing its telescopic end to move the insert 402 back into the slot 403, thereby achieving the effect of supporting the chassis 308 and the housing body 1.

[0037] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0038] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A centrifugal fan casing with noise reduction function, comprising a casing body (1), characterized in that, A bottom shell (2) is provided below the chassis body (1); A noise reduction structure (3) is provided on the bottom shell (2); The noise reduction structure (3) includes a water bladder (301) placed inside the bottom shell (2) and a water tank (302) installed on the bottom shell (2). A water pump (303) is installed on the top of the water tank (302). A first water pipe (304) connected to the inside of the water tank (302) is installed at the input end of the water pump (303). A second water pipe (305) connected to the inside of the water bladder (301) is installed at the output end of the water pump (303). A chassis (308) is installed at the bottom of the chassis body (1). The chassis (308) is installed on the water bladder (301). A support structure (4) is provided on the bottom shell (2).

2. A centrifugal fan casing with noise reduction function according to claim 1, characterized in that, The top of the water tank (302) is connected to a water inlet pipe (306), and a threaded cap (307) is threadedly connected to the water inlet pipe (306).

3. A centrifugal fan casing with noise reduction function according to claim 1, characterized in that, The support structure (4) includes a slot (403) opened on the chassis (308) and a hydraulic rod (401) installed on the bottom shell (2). The telescopic end of the hydraulic rod (401) is equipped with a plug (402), which is adapted to the slot (403).

4. A centrifugal fan casing with noise reduction function according to claim 3, characterized in that, The bottom shell (2) is provided with a sliding groove (404), and the bottom shell (2) is slidably connected to a slider (405) through the sliding groove (404). The insert (402) is installed on the slider (405).

5. A centrifugal fan casing with noise reduction function according to claim 4, characterized in that, The slider (405) is convex in shape.

6. A centrifugal fan casing with noise reduction function according to claim 3, characterized in that, The slot (403) has four openings, the hydraulic rod (401) has four openings, and the insert (402) has four openings.

7. A centrifugal fan casing with noise reduction function according to claim 4, characterized in that, The slide groove (404) has four openings, and the slider (405) has four openings.

Images