Packaging structure of backward-inclined centrifugal fan

Abstract

The packaging structure comprises a paper box, a positioning piece and a supporting piece, the positioning piece is folded and placed in the paper box, the positioning piece is of a double-layer structure, positioning holes are formed in the centers of the upper layer and the lower layer of the positioning piece respectively, and the size of the lower positioning hole is matched with that of the supporting piece. The size of the upper positioning hole is matched with that of a motor end cover of the backward inclined centrifugal fan; the supporting piece is placed in a positioning hole below the positioning piece and is used for supporting a rotor part of the fan; the lower-layer space of the positioning piece is used for placing a motor and a wind wheel of the backward inclined centrifugal fan which are connected, and the upper-layer space is used for placing wind guide accessories. The motor, the wind wheel and the wind guide accessories of the backward-inclined centrifugal fan are positioned and placed in a separated mode through the positioning piece and the supporting piece, collision between parts is prevented, and collision between all the parts and a packaging box body is also prevented; the paper piece is used for external packing, so that the cost is saved; the packaging and assembling procedures are simple, and the packaging efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging, in particular to a packaging structure of a backward inclined centrifugal fan. Background Art

[0002] Centrifugal fans are widely used in ventilation, refrigeration and other industries. When centrifugal fans are working, the motor drives the fan to rotate at high speed, which will generate a large centrifugal force. The application products have high requirements for the dynamic balance of the fan. If the dynamic balance is not up to standard, the fan will produce a lot of vibration, damaging the fan and other related equipment. There is a great risk of damaging the balance and appearance of the fan during transportation, such as the vibration caused by the shaking of the vehicle due to the bumpy road, the inertial deviation of the fan due to turning and speed change, and the pressure caused by the stacking of fans, which will cause the fan wheel to be damaged during transportation.

[0003] The backward inclined centrifugal fan includes an air guide accessory, a motor and a wind wheel. The motor is connected to the wind wheel and drives the wind wheel to rotate. The air guide accessory is coaxially arranged with the wind wheel and can guide external air into the wind wheel.

[0004] When packaging the existing backward-inclined centrifugal fan, the motor, the impeller and the air guide accessories need to be fixed separately to prevent collisions between the components during transportation and to prevent collisions between the components and the packaging box.

[0005] Chinese patent publication number CN215476726U, publication date January 11, 2022, discloses a packaging box for a backward-inclined centrifugal fan. Although it solves the problem of preventing collisions between the components of the backward-inclined centrifugal fan after packaging, it requires fixing the motor and the wind wheel with wooden boards and bolts, and isolating the air guide accessories with wooden boards. There are problems of increased costs and complicated packaging procedures. Utility Model Content

[0006] In order to solve the above technical problems, the utility model designs a packaging structure of a backward inclined centrifugal fan.

[0007] The utility model adopts the following technical solutions:

[0008] A packaging structure for a backward-inclined centrifugal fan comprises a carton, a positioning piece and a supporting piece, wherein the positioning piece is folded and placed inside the carton, the positioning piece is a double-layer structure, and positioning holes are respectively arranged at the centers of the upper and lower layers of the positioning piece, the size of the lower positioning hole matches that of the supporting piece, and the size of the upper positioning hole matches that of the motor end cover of the backward-inclined centrifugal fan; the supporting piece is placed in the lower positioning hole of the positioning piece to support the rotor part of the fan; the upper structure of the positioning piece is isolated to form an upper space and a lower space, the lower space is used to place the motor and impeller of the connected backward-inclined centrifugal fan, and the upper space is used to place air guide accessories.

[0009] Preferably, the positioning member is composed of two symmetrical halves.

[0010] Preferably, the positioning piece is a double-layer cardboard structure.

[0011] Preferably, the positioning piece fits tightly against the inside of the carton after being folded.

[0012] Preferably, the support member is in a cylindrical shape and is formed by pressing multiple layers of fiberboard.

[0013] Preferably, the height of the support member needs to ensure that the lowest point of the backward inclined centrifugal fan does not touch the bottom of the carton.

[0014] Preferably, the carton is of an up-and-down swing-lid style.

[0015] The beneficial effects of the utility model are as follows: (1) the utility model adopts positioning members and supporting members to separate and position the motor, impeller and air guide accessories of the backward-inclined centrifugal fan, thereby preventing collisions between components and between components and the packaging box; (2) the utility model adopts cartons and paper positioning members and supporting members for the outer packaging of the fan, thereby saving costs and eliminating the environmental problems caused by the use of foam packaging; (3) the packaging assembly process of the utility model is simple and the packaging efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model when it is used;

[0017] Figure 2 yes Figure 1 A cross-sectional view in the AA direction;

[0018] Figure 3 It is an exploded diagram when the utility model is used;

[0019] In the figure: 100. Packaging structure of backward-inclined centrifugal fan, 200. Backward-inclined centrifugal fan, 1. Positioning member, 2. Carton, 3. Support member, 4. Air guide accessory. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0021] Example: Figure 1-Figure 3As shown, a packaging structure of a backward-inclined centrifugal fan comprises a positioning member 1, a carton 2, and a support member 3. The positioning member is folded and placed inside the carton. The positioning member is a double-layer cardboard structure. Positioning holes are respectively arranged at the centers of the upper and lower layers of the positioning member. The size of the lower positioning hole matches that of the support member, and the size of the upper positioning hole matches that of the motor end cover of the backward-inclined centrifugal fan. The support member is placed in the lower positioning hole of the positioning member to support the rotor part of the fan. The upper structure of the positioning member is isolated to form an upper space and a lower space. The lower space is used to place the motor and the impeller of the connected backward-inclined centrifugal fan, and the upper space is used to place the air guide accessory 4.

[0022] The positioning piece is made up of two symmetrical halves. After being folded, the positioning piece fits tightly inside the carton. The support piece is a round tube made of multiple layers of fiberboard. The height of the support piece must ensure that the lowest point of the backward centrifugal fan does not touch the bottom of the carton. The carton is a swing-cover style.

[0023] When the utility model is used, the carton 2 is folded to close the bottom and then placed horizontally; the two halves of the positioning members 1 are folded according to the designed creases and placed in the carton 2, one on each side, so that the positioning members fit the bottom and sides of the carton; the support member 3 is placed in the lower positioning hole to fix the support member, so that the structure is more stable; the rotor part of the backward-inclined centrifugal fan 200 is placed on the support member, and the upper half of the positioning member is folded so that the positioning hole above the positioning member is stuck in the motor end cover of the backward-inclined centrifugal fan; finally, the air guide accessory 4 is placed in the upper space between the upper part of the folded positioning member and the carton, and the upper cover of the carton is closed, and the packaging structure 100 of the backward-inclined centrifugal fan is completed to package the product.

[0024] The above-described embodiment is only a preferred solution of the present invention and does not limit the present invention in any form. There are other variations and modifications without exceeding the technical solution described in the claims.

Claims

1. A packaging structure for a backward-inclined centrifugal fan, characterized in that: It includes a carton, a positioning piece and a supporting piece. The positioning piece is folded and placed inside the carton. The positioning piece is a double-layer structure. Positioning holes are respectively arranged in the centers of the upper and lower layers of the positioning piece. The size of the lower positioning hole matches that of the supporting piece, and the size of the upper positioning hole matches that of the motor end cover of the backward-inclined centrifugal fan. The supporting piece is placed in the lower positioning hole of the positioning piece to support the rotor part of the fan. The upper structure of the positioning piece is isolated to form an upper space and a lower space. The lower space is used to place the motor and impeller of the connected backward-inclined centrifugal fan, and the upper space is used to place air guide accessories.

2. The packaging structure of a backward-inclined centrifugal fan according to claim 1 is characterized in that: The positioning piece is composed of two symmetrical halves.

3. The packaging structure of a backward-inclined centrifugal fan according to claim 1 is characterized in that: The positioning piece is a double-layer paperboard structure.

4. The packaging structure of a backward-inclined centrifugal fan according to claim 1 is characterized in that: The positioning piece is tightly attached to the inside of the carton after being folded.

5. The packaging structure of a backward-inclined centrifugal fan according to claim 1 is characterized in that: The support member is in the shape of a round tube and is formed by pressing multiple layers of fiber paperboard.

6. The packaging structure of a backward inclined centrifugal fan according to claim 1, characterized in that: The height of the support member must ensure that the lowest point of the backward-inclined centrifugal fan does not touch the bottom of the carton.

7. The packaging structure of a backward inclined centrifugal fan according to claim 1, characterized in that: The carton is of the type with upper and lower swing covers.

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