Centrifugal fan fixtures and air conditioning equipment

Abstract

The present invention provides a centrifugal fan fixing device and air conditioning equipment. The centrifugal fan fixing device includes a mounting member and a fixing member. The mounting member is used to fix the centrifugal fan's air outlet flange; the centrifugal fan housing is fixedly connected to the mounting member via the fixing member. The fixed connection between the centrifugal fan housing and the mounting member via the fixing member significantly improves the stress conditions on the centrifugal fan's motor and volute, effectively enhancing the centrifugal fan's vibration resistance.

Description

Technical Field

[0001] The present invention belongs to the technical field of air-conditioning equipment, and in particular relates to a fixing device for a centrifugal fan and air-conditioning equipment. Background Art

[0002] Centrifugal fans have the characteristics of high static pressure and large air volume, so centrifugal fans are widely used in air-conditioning equipment. However, in some special air conditioners, in addition to meeting basic performance requirements, centrifugal fans also need to have sufficient vibration resistance. Taking into account the production cost, centrifugal fans currently on the market generally do not have the vibration resistance under harsh working environments. The common installation method of centrifugal fans on the market now is to connect the air outlet flange 2 and the mounting plate 1 with bolts. This fixing method makes the weight of the entire centrifugal fan concentrated on the air outlet flange 2, and its force-bearing method is a cantilever beam method, which cannot withstand vibrations in harsh working environments. During operation, it is very easy for the air outlet flange 2 to fail, thereby shortening the life of the fan.

[0003] Therefore, in special air-conditioning equipment, in order to ensure the service life and reliability of the air-conditioning equipment, some methods need to be used to improve the vibration resistance of the centrifugal fan. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to provide a fixing device for a centrifugal fan and an air-conditioning device, which can improve the stability of the centrifugal fan and enhance the anti-vibration performance of the centrifugal fan.

[0005] In order to solve the above problems, the present invention provides a fixing device for a centrifugal fan, including a mounting member and a fixing member, wherein the mounting member is used to fix the air outlet flange of the centrifugal fan; the casing of the centrifugal fan is fixedly connected to the mounting member via the fixing member.

[0006] Preferably, the fixing member and the mounting member form an annular bracket, and the centrifugal fan is arranged in the annular bracket.

[0007] Preferably, the fixing member includes a plurality of fixing plates, and the plurality of fixing plates are connected in sequence to form a bending structure. The annular bracket is formed by connecting both ends of the bending structure to the mounting member; and both sides of the bending structure are connected to the outer shell.

[0008] Preferably, the fixing member further includes a reinforcing plate, and the reinforcing plate is fixedly connected between the side of the bending structure, the fixing surface of the air outlet flange on the mounting member, and the outer shell.

[0009] Preferably, the outer shell includes a volute, and a vibration-damping pad is provided between the volute and the bending structure.

[0010] Preferably, the mounting member includes a mounting plate and a support plate, and both the mounting plate and the support plate are fixedly connected to the fixing member; and the air outlet flange is fixed on the mounting plate.

[0011] Preferably, the support plate is perpendicular to the air outlet flange fixing surface of the mounting plate.

[0012] Preferably, there are multiple support plates, which are spaced apart from each other and arranged in parallel.

[0013] According to another aspect of the present invention, an air-conditioning device is provided, comprising the fixing device for the centrifugal fan as described above.

[0014] The present invention provides a centrifugal fan fixing device comprising a mounting member and a fixing member. The mounting member is used to fix the centrifugal fan's air outlet flange; the centrifugal fan housing is fixedly connected to the mounting member via the fixing member. This fixing of the centrifugal fan housing and the mounting member via the fixing member significantly improves the stress conditions on the centrifugal fan's motor and volute, effectively enhancing the centrifugal fan's vibration resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the installation of a centrifugal fan in a traditional air-conditioning device;

[0016] Figure 2 Schematic diagram of a three-dimensional fixing device for a centrifugal fan according to an embodiment of the present invention;

[0017] Figure 3 A front view of a fixing device for a centrifugal fan according to an embodiment of the present invention;

[0018] Figure 4 2 is a top view of a fixing device for a centrifugal fan according to an embodiment of the present invention.

[0019] The reference numerals indicate:

[0020] 1. Mounting plate; 11. Support plate; 2. Air outlet flange; 3. Motor bracket; 4. Volute; 51. Front fixing plate; 52. Rear fixing plate; 53. Upper fixing plate; 54. Middle fixing plate; 6. Vibration damping pad. DETAILED DESCRIPTION

[0021] See also Figures 2 to 4 As shown, according to an embodiment of the present invention, a fixing device for a centrifugal fan includes a mounting member and a fixing member, wherein the mounting member is used to fix the air outlet flange 2 of the centrifugal fan; the casing of the centrifugal fan is fixedly connected to the mounting member via the fixing member.

[0022] The centrifugal fan is fixed to the mounting part via the air outlet flange 2, and then fixedly connected to the mounting part via the fixing part in combination with the casing of the centrifugal fan, so that the entire centrifugal fan is fixedly connected to the mounting part at least at two places, avoiding the centrifugal fan casing and the motor inside it being in a cantilever beam state, improving the fixing firmness of the centrifugal fan casing and the motor inside it on the mounting part, greatly improving the stress condition of the centrifugal fan, and effectively improving the vibration resistance of the centrifugal fan.

[0023] The fixing part and the mounting part form an annular bracket, and the centrifugal fan is arranged in the annular bracket.

[0024] The annular bracket composed of fixing parts and mounting parts surrounds the entire centrifugal fan, making it convenient to fix the shell in all directions and ensure the stability of the centrifugal fan.

[0025] The fixing member includes a plurality of fixing plates, which are sequentially connected to form a bending structure. The annular bracket is formed by connecting both ends of the bending structure with the mounting member; and both sides of the bending structure are connected to the shell.

[0026] The fixed plate itself can be a straight plate structure, with multiple straight plates connected at the bend to form a bent structure; or the fixed plate itself can be a bent plate structure, with multiple bent plates connected to form a structure; or the fixed plate can include a straight plate and a bent plate, with the two types of plates connected in sequence; the use of multiple fixed plate structures facilitates processing and assembly, and effectively covers the outer periphery of the centrifugal fan.

[0027] The fixing member further includes a reinforcing plate, which is fixedly connected between the side of the bending structure, the fixing surface of the air outlet flange 2 on the mounting member, and the outer shell.

[0028] A reinforcing plate is used to further strengthen the connection strength between the bending structure, the mounting parts and the housing, thereby improving the fixing firmness and vibration resistance of the centrifugal fan.

[0029] The outer shell includes a volute 4 , and a vibration-damping pad 6 is provided between the volute 4 and the bending structure.

[0030] A vibration damping pad 6 is provided in the gap between the volute 4 and the bent structure. This pad can, on the one hand, act as a buffer to absorb vibrations and improve vibration resistance; on the other hand, it can absorb noise and reduce the noise of the centrifugal fan. The vibration damping pad 6 can be made of sponge or other similar vibration damping materials.

[0031] The mounting member includes a mounting plate 1 and a support plate 11 , and both the mounting plate 1 and the support plate 11 are fixedly connected to the fixing member; the air outlet flange 2 is fixed on the mounting plate 1 .

[0032] The mounting parts distribute the weight of the entire centrifugal fan through the air outlet flange 2 and the fixing parts through the mounting plate 1 and the support plate 11 structure, which greatly alleviates the stress condition of the fan flange and greatly improves the stress mode of the entire centrifugal fan, thereby improving the vibration resistance of the entire centrifugal fan.

[0033] The support plate 11 is perpendicular to the fixing surface of the air outlet flange 2 of the mounting plate 1 .

[0034] The connection between the support plate 11 and the fixing member is parallel to the fixing surface of the air outlet flange 2, ensuring that the force of the entire centrifugal fan is dispersed.

[0035] There are multiple support plates 11 , which are spaced apart and arranged in parallel.

[0036] The provision of multiple support plates 11 facilitates the installation of the product with multiple other components during actual assembly, thereby achieving good force dispersion and improving the anti-vibration performance of the centrifugal fan.

[0037] The specific structure of the product in this embodiment is as follows: Figure 2-4 As shown, the fixing parts include a front fixing plate 51, a rear fixing plate 52, a middle fixing plate 54, and an upper fixing plate 53. The front fixing plate 51 and the rear fixing plate 52 are connected by bolts. The front fixing plate 51 and the rear fixing plate 52 are fixed to the mounting plate 1. The middle fixing plate 54 and the upper fixing plate 53 are also tightly fixed to the mounting plate 1. In this way, the front fixing plate 51, the rear fixing plate 52, the middle fixing plate 54, the upper fixing plate 53, and the mounting plate 1 form an annular bracket.

[0038] The centrifugal fan housing includes a volute 4 and a motor bracket 3. The volute 4 is screwed to the front, rear, and upper mounting plates 51, 52, and 53. The motor bracket 3 is also bolted to the fan volute 4 and rear mounting plate 52. The fan volute 4 is fixed to the front, rear, and middle mounting plates 51, 52, and 54 of the annular bracket. This installation distributes the weight of the entire centrifugal fan onto the annular bracket. The motor bracket 3 is fixed to the fan volute 4 and the annular bracket, which bears some of the weight of the motor, increasing the reliability of the motor bracket 3.

[0039] Compared to the traditional assembly structure, this embodiment adds two support plates 11, which are tightly fixed to the annular bracket. The mounting plate 1 and the two support plates 11 are then secured to the other components of the air conditioner. This effectively distributes the weight of the entire fan to the other components of the air conditioner via the annular bracket. This significantly reduces the stress on the fan flange and significantly improves the stress distribution of the entire centrifugal fan, thereby enhancing the vibration resistance of the entire centrifugal fan.

[0040] According to another embodiment of the present invention, an air conditioning device includes the fixing device for the centrifugal fan as described above.

[0041] It is easy for those skilled in the art to understand that the above embodiments can be freely combined and superimposed without conflict.

[0042] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention. The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and variations without departing from the technical principles of the present invention, and such improvements and variations shall also be considered within the scope of protection of the present invention.

Claims

1. A fixing device for a centrifugal fan, characterized in that: It comprises a mounting part and a fixing part, wherein the mounting part is used to fix the air outlet flange (2) of the centrifugal fan; the housing of the centrifugal fan is fixedly connected to the mounting part via the fixing part; The fixing member comprises a front fixing plate (51), a rear fixing plate (52), a middle fixing plate (54) and an upper fixing plate (53); the front fixing plate (51) and the rear fixing plate (52) are fixed on the mounting plate (1), and the middle fixing plate (54) and the upper fixing plate (53) are also fixed to the mounting plate (1); the outer shell of the centrifugal fan comprises a volute (4) and a motor bracket (3); the volute (4) is fixed on the front fixing plate (51), the rear fixing plate (52) and the middle fixing plate (54), and the motor bracket (3) is fixed to the volute (4) and the rear fixing plate (52).

2. The fixing device for a centrifugal fan according to claim 1, characterized in that: The fixing member and the mounting member form an annular bracket, and the centrifugal fan is arranged in the annular bracket.

3. The fixing device for a centrifugal fan according to claim 2, characterized in that: The multiple fixing plates of the fixing member are connected in sequence to form a bending structure. The annular bracket is formed by connecting both ends of the bending structure to the mounting member; and both sides of the bending structure are connected to the housing.

4. The fixing device for a centrifugal fan according to claim 3, characterized in that: The fixing member further comprises a reinforcing plate, which is fixedly connected between the side of the bending structure, the fixing surface of the air outlet flange (2) on the mounting member and the outer shell.

5. The fixing device for a centrifugal fan according to claim 3 or 4, characterized in that: A vibration-damping pad (6) is provided between the volute (4) and the bending structure.

6. The fixing device for a centrifugal fan according to claim 1, characterized in that: The mounting member comprises a mounting plate (1) and a support plate (11), and both the mounting plate (1) and the support plate (11) are fixedly connected to the fixing member; the air outlet flange (2) is fixed on the mounting plate (1).

7. The fixing device for a centrifugal fan according to claim 6, characterized in that: The support plate (11) is perpendicular to the air outlet flange (2) fixing surface of the mounting plate (1).

8. The fixing device for a centrifugal fan according to claim 6 or 7, characterized in that: The support plates (11) are provided in plurality and are spaced apart from each other and arranged in parallel.

9. An air conditioning device, characterized in that: A fixing device for a centrifugal fan comprising any one of claims 1-8.

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