Built-in centrifugal fan box capable of being disassembled for maintenance

Abstract

The utility model relates to the technical field of fan equipment, in particular to a built-in centrifugal fan box capable of being disassembled and maintained. The utility model discloses a centrifugal fan which comprises a fan shell and a volute-free centrifugal fan arranged in the fan shell. The draught fan shell comprises a draught fan box sealing shell U-shaped plate, a draught fan box top cover plate and an air inlet guide plate, wherein the draught fan box top cover plate is connected with the draught fan box sealing shell U-shaped plate and forms a square shell with the draught fan box sealing shell U-shaped plate, and the air inlet guide plate is arranged on one side of the draught fan box sealing shell U-shaped plate. And the air supply volute plate is arranged on the other side of the fan box sealing shell U-shaped plate. The hidden ventilation device has the advantages that the problem that a fan in the hidden ventilation device cannot be maintained and detached is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of fan equipment, in particular to an internally-mounted centrifugal fan box that can be disassembled for maintenance. Background Art

[0002] A centrifugal fan is a mechanical device that uses an electric motor to drive an impeller to rotate. By generating a huge centrifugal force, it compresses gas to the periphery of the impeller and transports it to the fan outlet through a volute.

[0003] In the prior art, the centrifugal fan box plays a core role in the operation of mechanical equipment and is widely used in the cooling and ventilation of air conditioning equipment and household electrical appliances. Especially for some concealed ventilation and air exchange equipment, it cannot meet the convenience of installation and maintenance.

[0004] Therefore, it is necessary to design an internally-mounted centrifugal fan box that can be disassembled for maintenance to solve the above problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an internally-mounted centrifugal fan box that can be disassembled for maintenance to overcome the above-mentioned deficiencies in the current prior art.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An internally-mounted centrifugal fan box that can be disassembled for maintenance, which includes a fan housing and a volute-less centrifugal fan placed inside the fan housing. The fan housing includes a U-shaped plate of the fan box sealing housing, a top cover plate of the fan box that is connected to the U-shaped plate of the fan box sealing housing and forms a square housing with the U-shaped plate of the fan box sealing housing, an air inlet guide plate placed on one side of the U-shaped plate of the fan box sealing housing, and a blowing volute plate arranged on the other side of the U-shaped plate of the fan box sealing housing. The blowing volute plate and the air inlet guide plate are arranged opposite to each other, and an air inlet guide opening is provided on the air inlet guide plate; a groove for installing the centrifugal fan is provided on the blowing volute plate, and the groove is placed inside the fan housing. A guide air opening that communicates with the air inlet guide opening of the air inlet guide plate is provided at the end of the groove. A fan installation support plate is arranged on the back of the centrifugal fan. The fan installation support plate is fixed to the centrifugal fan through a fixing member, and both ends of the fan installation support plate are fixed to the blowing volute plate through nuts and screws.

[0008] Preferably, the U-shaped plate of the fan box sealing housing, the top cover plate of the fan box, the air inlet guide plate, and the blowing volute plate form a square structural housing.

[0009] Preferably, the centrifugal fan is placed in the groove. The centrifugal fan is connected to a driving motor, and the driving motor is externally connected to a power cord, and a power plug is provided at the end of the power cord.

[0010] Preferably, fixing holes are provided at both ends of the fan mounting bracket plate, and the fixing holes are respectively located on the plate surface of the air supply volute plate.

[0011] Preferably, a handle is further provided on the top cover plate of the fan box.

[0012] The beneficial effects of the present utility model are as follows: The structure of the present utility model is simple and reasonably designed. The air inlet guide plate and the air supply volute plate formed by integral spinning or stamping and cutting are used to internally place the centrifugal fan, which is convenient for assembly and use. It ensures that under the drive of the centrifugal fan, an effective and reasonable air flow organization is formed. And through the provided pluggable, detachable and lifting device, the problem that the fan in the concealed installation ventilation and air change equipment cannot be maintained and is non-detachable is effectively solved. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of a detachable and repairable built-in centrifugal fan box of the present utility model;

[0014] Figure 2 is an exploded view of a detachable and repairable built-in centrifugal fan box of the present utility model;

[0015] Figure 3 is a side view of the air flow direction of a detachable and repairable built-in centrifugal fan box of the present utility model;

[0016] Figure 4 is a schematic diagram of the air supply volute plate of a detachable and repairable built-in centrifugal fan box of the present utility model;

[0017] Figure 5 is a schematic diagram of the air inlet guide plate of a detachable and repairable built-in centrifugal fan box of the present utility model;

[0018] Figure 6 is a schematic diagram of the use of a detachable and repairable built-in centrifugal fan box of the present utility model;

[0019] In the figure: 1. Air supply volute plate; 11. Groove; 12. Air guide port; 2. Air inlet guide plate; 21. Air inlet guide port; 3. U-shaped plate of the fan box sealing outer shell; 4. Second adjustment component; 41. Fixing hole; 5. Top cover plate of the fan box; 6. Handle; 7. Centrifugal fan; 8. Power cord; 9. Power plug. Detailed Embodiments

[0020] 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0022] Refer to Figures 1 to 5 , a detachable and repairable built-in centrifugal fan box, which includes a fan housing and a volute-less centrifugal fan 7 placed inside the fan housing;

[0023] The fan housing includes a U-shaped plate 3 of the fan box sealing housing, a top cover plate 5 of the fan box that is connected to the U-shaped plate 3 of the fan box sealing housing and forms a square housing with the U-shaped plate 3 of the fan box sealing housing, an air inlet guide plate 2 placed on one side of the U-shaped plate 3 of the fan box sealing housing, and an air supply volute plate 1 arranged on the other side of the U-shaped plate 3 of the fan box sealing housing;

[0024] The U-shaped plate 3 of the fan box sealing housing, the top cover plate 5 of the fan box, the air inlet guide plate 2, and the air supply volute plate 1 form a square structure housing. And for the convenience of fitting and assembling, the corners of the U-shaped plate 3 of the fan box sealing housing, the top cover plate 5 of the fan box, the air inlet guide plate 2, and the air supply volute plate 1 are all provided with curled edges, which is convenient for assembly through nuts or later using equipment such as nail guns; it is convenient for disassembly and assembly.

[0025] The top cover plate 5 of the fan box and the air inlet guide plate 2 are both integrally spun or stamped and cut and processed, with reasonable air flow organization and in line with the principles of aerodynamics; the air supply volute plate 1 and the air inlet guide plate 2 are arranged opposite to each other, and an air inlet guide opening 21 is opened on the air inlet guide plate 2; a groove 11 for installing the centrifugal fan 7 is provided on the air supply volute plate 1, and the groove is placed inside the fan housing, and an opening 12 communicating with the air inlet guide opening 21 of the air inlet guide plate 2 is opened at the end of the groove;

[0026] The centrifugal fan 7 is placed in the groove 11. The centrifugal fan 7 is connected to a driving motor, and the driving motor is externally connected with a power cord 8, and a power plug 9 is arranged at the end of the power cord;

[0027] In order to install the centrifugal fan 7 into the groove 11, a fan installation support plate 4 is arranged on the back of the centrifugal fan 7, i.e., the side that is not the air inlet. The fan installation support plate 4 is fixed to the centrifugal fan 7 through fixing parts. Fixing holes 41 are opened at both ends of the fan installation support plate 4, and the ends of the fixing holes are respectively placed on the plate surface of the air supply volute plate 1. Both ends of the fan installation support plate 4 are respectively fixed to the air supply volute plate 1 through nuts and screws;

[0028] In order to facilitate the removal of the entire fan box body, a handle 6 is further arranged on the top cover plate 5 of the fan box, which is convenient for taking during later maintenance;

[0029] Implementation case, refer to Figure 6 , this device is a ceiling-mounted concealed ventilation and air purification device. The built-in fan box of the present utility model that can be disassembled and maintained is used as the core power component inside the device and is installed in parallel front and back to play a pressurizing role; after the maintenance door panel of the device is opened, the fan box can be extracted for maintenance

[0030] The beneficial effects of the present utility model are as follows: The structure of the present utility model is simple and reasonably designed. The air inlet guide plate and the air supply volute plate of the present utility model are formed by integral spinning or stamping and then cutting and processing, with the centrifugal fan built-in, which is convenient for assembly and use, ensuring that under the drive of the centrifugal fan, an effective and reasonable air flow organization is formed, and through the provided pluggable, detachable and lifting devices, the problem that the fan in the concealed ventilation and air purification device cannot be maintained and disassembled is effectively solved.

[0031] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A detachable and repairable built-in centrifugal fan box, which comprises a fan housing and a volute-less centrifugal fan placed inside the fan housing, and is characterized in that: The blower housing includes a U-shaped plate of the blower box sealed housing, a top cover plate of the blower box that is interconnected with the U-shaped plate of the blower box sealed housing and forms a square housing with the U-shaped plate of the blower box sealed housing, an air inlet guide plate disposed on one side of the U-shaped plate of the blower box sealed housing, and a blower air volute plate disposed on the other side of the U-shaped plate of the blower box sealed housing. The blower air volute plate and the air inlet guide plate are oppositely arranged, and an air inlet guide opening is provided on the air inlet guide plate. A groove for installing a centrifugal blower is provided on the blower air volute plate, and the groove is disposed inside the blower housing. A guide air opening communicating with the air inlet guide opening of the air inlet guide plate is provided at the end of the groove. A blower mounting bracket plate is provided on the back of the centrifugal blower. The blower mounting bracket plate is fixed to the centrifugal blower through a fixing member, and both ends of the blower mounting bracket plate are respectively fixed to the blower air volute plate by nuts and screws.

2. The built-in centrifugal fan box with detachable maintenance according to claim 1, characterized in that: The U-shaped plate of the blower box sealed housing, the top cover plate of the blower box, the air inlet guide plate, and the blower air volute plate form a square structural housing.

3. A detachable and repairable built-in centrifugal fan box according to claim 1, characterized in that: The centrifugal blower is disposed in the groove. The centrifugal blower is connected to a driving motor, and a power cord is externally connected to the driving motor. A power plug is provided at the end of the power cord.

4. A detachable and repairable built-in centrifugal fan box according to claim 1, characterized in that: Fixing holes are provided at both ends of the blower mounting bracket plate, and the fixing holes are respectively disposed on the plate surface of the blower air volute plate.

5. A detachable and repairable built-in centrifugal fan box according to claim 1, characterized in that: A handle is further provided on the top cover plate of the blower box.

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