Fan applying double-end output motor

Abstract

The utility model relates to the field of centrifugal fans, in particular to a fan applying a double-end output motor, the fan applying the double-end output motor comprises a motor and an impeller, and the impeller comprises a main wheel and an auxiliary wheel; the main wheel comprises a first side plate and a first blade, and the first blade is located on one side of the first side plate and fixedly connected with the first side plate. The auxiliary wheel comprises a second side plate and a second blade, and the second blade is located on one side of the second side plate and fixedly connected with the second side plate. The first blade is arranged on the second side plate in a penetrating manner, and the second blade is arranged on the first side plate in a penetrating manner; the first side plate and the second side plate are detachably connected, and a through hole allowing the first blade to penetrate through is formed in the second side plate; a hub fixedly connected with an output shaft of the motor is arranged on the first side plate. By means of the design, load balance of the output shaft of the motor is guaranteed, flexible regulation and control of energy consumption are achieved, and economical efficiency and practicability of the draught fan are improved.

Description

Technical Field

[0001] The present application relates to the field of centrifugal fans, and in particular to a fan using a double-end output motor. Background Art

[0002] Centrifugal fans are a type of ventilation equipment widely used in industrial, commercial and civil buildings. Centrifugal fans accelerate air through rotating impellers and direct it to the outside of the fan housing, thereby generating wind pressure and air volume.

[0003] Common centrifugal fans usually use a motor to drive the impeller to rotate at high speed to achieve air delivery. However, when the motor drives the wind wheel to rotate, the output shaft will be subjected to unidirectional force. Therefore, when the weight of the wind wheel is too large, the output shaft load is too large, or after a certain period of use, it is easy to cause structural fatigue deformation of the motor shaft, affecting the service life. At present, there are also fans that use double-end output motors, that is, impellers are connected to both ends of the motor output shaft to balance the load on both ends of the output shaft.

[0004] However, for fans with double-ended output motors, the impellers installed on both sides of the motor will work synchronously, generating a higher air volume. This will also cause the motor to consume more power. When only a smaller air volume is required, the cost of using the motor is high and the economy is poor. Utility Model Content

[0005] The present application provides a fan using a double-end output motor, which can avoid fatigue deformation caused by unidirectional force on the output shaft, and when only a small air volume is required, the fan also has lower energy consumption, thereby reducing the cost of use.

[0006] The fan using the double-end output motor provided in this application adopts the following technical solution:

[0007] A fan using a double-end output motor comprises a motor and an impeller, wherein the impeller comprises a main wheel and a secondary wheel;

[0008] The main wheel comprises a first side plate and a first blade, wherein the first blade is located at one side of the first side plate and is fixedly connected to the first side plate; the secondary wheel comprises a second side plate and a second blade, wherein the second blade is located at one side of the second side plate and is fixedly connected to the second side plate;

[0009] The first blade is inserted into the second side plate, and the second blade is inserted into the first side plate; the first side plate and the second side plate are detachably connected, and a through hole for the first blade to pass through is provided on the second side plate;

[0010] The first side plate is provided with a hub fixedly connected to the motor output shaft.

[0011] By adopting the above technical solution, due to the detachable connection design of the main wheel and the auxiliary wheel, when only a small amount of air is needed, one impeller is kept delivering air, and the first side plate and the second side plate of the other impeller are separated, and the main wheel and the auxiliary wheel slide relative to each other so that the first blade and the second blade are located between the first side plate and the second side plate, so that the impeller is in a "folded" state. In this state, the two sides of the impeller are blocked by the first side plate and the second side plate, so the air volume of the impeller will be greatly reduced, and the rotation resistance will also be reduced, thereby reducing the load and energy consumption of the motor. This design not only ensures the load balance of the motor output shaft, but also realizes the flexible regulation of energy consumption, and improves the economy and practicality of the fan.

[0012] Preferably, the main wheel further comprises a first connecting ring, which is located at an end of the first blade away from the first side plate and is fixedly connected to the first blade;

[0013] The secondary wheel also includes a second connecting ring, which is located at an end of the second blade away from the second side plate and is fixedly connected to the second blade.

[0014] By adopting the above technical solution, the provision of the first and second connecting rings can improve the integrity of the first blade and the second blade.

[0015] Preferably, a first annular groove for snap-fitting with the second connecting ring is provided on a side of the first side plate facing away from the first blade; and a second annular groove for snap-fitting with the first connecting ring is provided on a side of the second side plate facing away from the second blade.

[0016] By adopting the above technical solution, the snap-fit ​​design makes the connection between the main wheel and the secondary wheel tighter and more stable, while also improving the stability of the connection between the main wheel and the secondary wheel, facilitating the stable rotation of the impeller.

[0017] Preferably, the first side plate is fixed to the end of the motor output shaft and the first blade is located on the side of the first side plate facing the motor; the second side plate is provided with a center hole through which the power supply motor output shaft passes, and the second side plate is located on the side of the first side plate facing the motor, and the second blade is located on the side of the second side plate facing away from the motor.

[0018] By adopting the above technical solution, when the impeller is folded, the secondary wheel moves towards the direction close to the motor, thereby reducing the footprint of the fan and also helping to reduce the bending moment on the motor output shaft.

[0019] Preferably, a plurality of the first blades and a plurality of the second blades are provided and are arranged alternately.

[0020] By adopting the above technical solution, after the main wheel and the auxiliary wheel are folded, the distance between the first blade and the second blade is relatively low, thereby reducing the rotation resistance of the impeller and reducing energy consumption.

[0021] Preferably, a lock hole is formed on the first side plate, and a lock column is provided on the second side plate. The lock column passes through the lock hole and extends to a side of the first side plate facing away from the second side plate, and a locking piece is also provided on the lock column.

[0022] By adopting the above technical solution, this locking structure can ensure a tight connection between the main wheel and the secondary wheel, preventing loosening or falling off during the operation of the fan, thereby improving the stability and safety of the fan.

[0023] Preferably, the lock hole is located at an edge of the first side plate, and the lock column is located at an edge of the second side plate.

[0024] By adopting the above technical solution, the connection strength between the first side plate and the second side plate can be effectively improved, so as to facilitate the use of a higher rotation speed.

[0025] Preferably, the locking member is configured as a locking rod and is disposed perpendicularly to the locking column, and the locking rod is rotatably connected to the locking column.

[0026] By adopting the above technical solution, when the main wheel and the secondary wheel need to be locked, the locking rod only needs to be rotated to a position abutting against the side wall of the first side plate, and the locking effect is achieved through the friction between the locking rod and the side wall. This locking method is also simple and easy to operate, and has a reliable locking effect.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. By placing the impeller in a folded or unfolded state, the air supply and energy consumption of the fan can be flexibly adjusted, thereby improving the practicality and economy of the fan, and also maintaining load balance at both ends of the motor output shaft;

[0029] 2. The main wheel and the secondary wheel are relatively fixed by setting a locking column, a locking rod and a locking hole, which can ensure the convenience of folding and unfolding the impeller and the stability of the main wheel and the secondary wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of a fan using a double-end output motor in an embodiment of the present application;

[0031] Figure 2 It is a schematic diagram of the exploded structure of the impeller in the embodiment of the present application;

[0032] Figure 3 It is a schematic diagram of the structure of the impeller in the "folded" state in the embodiment of the present application.

[0033] Markings in the accompanying drawings: 1, motor; 2, impeller; 21, main wheel; 211, first side plate; 212, first blade; 213, first connecting ring; 214, hub; 215, first ring groove; 216, lock hole; 217, avoidance hole; 22, secondary wheel; 221, second side plate; 222, second blade; 223, second connecting ring; 224, second ring groove; 225, lock column; 226, locking piece. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-3 This application is described in further detail.

[0035] This embodiment discloses a fan using a double-end output motor, including a double-end output motor 1 and an impeller 2. Figure 1 and Figure 2 , two impellers 2 are provided and are respectively located at both ends of the double-end output motor 1. The impeller 2 is composed of a main wheel 21 and a secondary wheel 22. The main wheel 21 includes a first side plate 211 and a first blade 212 fixed on one side thereof, and the secondary wheel 22 includes a second side plate 221 and a second blade 222 fixed on one side thereof. The first blade 212 is inserted on the second side plate 221, and the second blade 222 is inserted on the first side plate 211. The first blade 212 and the second blade 222 are interlaced, and the first side plate 211 is located on the side of the second side plate 221 facing the second blade 222, and the second side plate 221 is located on the side of the first side plate 211 facing the second blade 222. The first side plate 211 and the second side plate 221 are detachably connected.

[0036] The first side plate 211 is provided with a hub 214 fixedly connected to the output shaft of the motor 1 to achieve stable rotation of the impeller 2. The second side plate 221 is provided with a central hole through which the output shaft of the power supply machine 1 passes, and the second side plate 221 is located on the side of the first side plate 211 facing the motor 1, and the second blade 222 is located on the side of the second side plate 221 facing away from the motor 1.

[0037] Reference Figure 1 and Figure 3 Due to the detachable connection design of the main wheel 21 and the secondary wheel 22, when only a small amount of air is needed, one impeller 2 is kept delivering air, and the first side plate 211 and the second side plate 221 of the other impeller 2 are separated, and the main wheel 21 and the secondary wheel 22 slide relative to each other so that the first blade 212 and the second blade 222 are located between the first side plate 211 and the second side plate 221, so that the impeller 2 is in a "folded" state. In this state, both sides of the impeller 2 are blocked by the first side plate 211 and the second side plate 221, so the air volume of the impeller 2 will be greatly reduced, and the rotation resistance will also be reduced, thereby reducing the load and energy consumption of the motor 1. This design not only ensures the load balance of the output shaft of the motor 1, but also realizes the flexible regulation of energy consumption, thereby improving the economy and practicality of the fan.

[0038] In order to improve the stability of the connection between the main wheel 21 and the secondary wheel 22 in the folded state of the impeller 2. The main wheel 21 also includes a first connecting ring 213, and the secondary wheel 22 also includes a second connecting ring 223. The first connecting ring 213 is located at one end of the first blade 212 away from the first side plate 211 and is fixedly connected to the first blade 212, and the second connecting ring 223 is located at one end of the second blade 222 away from the second side plate 221 and is fixedly connected to the second blade 222. A first annular groove 215 that is snap-fitted with the second connecting ring 223 is provided on the side of the first side plate 211 facing away from the first blade 212, and a second annular groove 224 that is snap-fitted with the first connecting ring 213 is provided on the side of the second side plate 221 facing away from the second blade 222. This snap-fit ​​design makes the connection between the main wheel 21 and the secondary wheel 22 tighter and more stable, and also improves the stability of the connection between the main wheel 21 and the secondary wheel 22, which is convenient for the stable rotation of the impeller 2.

[0039] When a large air volume is required, the first side plate 211 and the second side plate 221 can be relatively moved to fit and fix the two to each other, thereby realizing the "unfolding" of the impeller 2, that is, the impeller 2 can deliver air normally.

[0040] At the same time, in order to ensure the stability of the connection between the first side plate 211 and the second side plate 221, so that the impeller 2 can rotate at a high speed, the impeller 2 also includes a locking structure. Specifically, the locking structure includes a locking hole 216 opened at the edge of the first side plate 211, and a locking column 225 arranged at the edge of the second side plate 221. The locking column 225 passes through the locking hole 216 and extends to the side of the first side plate 211 facing away from the second side plate 221. The locking column 225 is also provided with a locking member 226. The locking member 226 achieves the relative fixation of the first side plate 211 and the second side plate 221 by limiting the position of the first side plate 211. This locking structure can ensure the tight connection between the main wheel 21 and the secondary wheel 22, prevent loosening or falling off during the operation of the fan, thereby improving the stability and safety of the fan.

[0041] In one implementation of the present application, the locking member 226 can be configured as a nut, and a threaded portion is provided on the locking column 225. The nut cooperates with the threaded portion, and the locking and unlocking operations are achieved by rotating the nut. This locking method is simple and easy to implement, and the locking effect is reliable.

[0042] In another embodiment, the locking member 226 can also be configured as a locking rod, which is vertically arranged with the locking column 225 and rotatably connected thereto. The first side plate 211 is also provided with an avoidance hole 217 for the locking rod to pass through, and the locking rod is also provided with a top block 227 for abutting against the side wall of the first side plate 211. When the main wheel 21 and the secondary wheel 22 need to be locked, the locking rod only needs to be rotated to a position abutting against the side wall of the first side plate 211, and the locking effect is achieved through the friction between the top block 227 and the side wall. This locking method is also simple and easy to use, and has a reliable locking effect.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fan using a double-ended output motor, characterized in that: It comprises a motor (1) and an impeller (2), wherein the impeller (2) comprises a main wheel (21) and a secondary wheel (22); The main wheel (21) comprises a first side plate (211) and a first blade (212), wherein the first blade (212) is located on one side of the first side plate (211) and is fixedly connected to the first side plate (211); the secondary wheel (22) comprises a second side plate (221) and a second blade (222), wherein the second blade (222) is located on one side of the second side plate (221) and is fixedly connected to the second side plate (221); The first blade (212) is inserted into the second side plate (221), and the second blade (222) is inserted into the first side plate (211); the first side plate (211) and the second side plate (221) are detachably connected, and the second side plate (221) is provided with a through hole for the first blade (212) to pass through; The first side plate (211) is provided with a wheel hub (214) fixedly connected to the output shaft of the motor (1).

2. The fan using a double-end output motor according to claim 1, characterized in that: The main wheel (21) further comprises a first connecting ring (213), the first connecting ring (213) being located at an end of the first blade (212) away from the first side plate (211) and being fixedly connected to the first blade (212); The secondary wheel (22) further comprises a second connecting ring (223), the second connecting ring (223) being located at an end of the second blade (222) away from the second side plate (221) and being fixedly connected to the second blade (222).

3. The fan using a double-end output motor according to claim 2, characterized in that: A first annular groove (215) that is snap-fitted with the second connecting ring (223) is provided on a side of the first side plate (211) that is away from the first blade (212); and a second annular groove (224) that is snap-fitted with the first connecting ring (213) is provided on a side of the second side plate (221) that is away from the second blade (222).

4. The fan using a double-end output motor according to claim 1, characterized in that: The first side plate (211) is fixed to the end of the output shaft of the motor (1), and the first blade (212) is located on the side of the first side plate (211) facing the motor (1); the second side plate (221) is provided with a central hole through which the output shaft of the power supply machine (1) passes, and the second side plate (221) is located on the side of the first side plate (211) facing the motor (1), and the second blade (222) is located on the side of the second side plate (221) facing away from the motor (1).

5. The fan using a double-end output motor according to claim 1, characterized in that: A plurality of the first blades (212) and the second blades (222) are provided and are arranged in a staggered manner.

6. The fan using a double-end output motor according to claim 1, characterized in that: A lock hole (216) is provided on the first side plate (211), and a lock column (225) is provided on the second side plate (221). The lock column (225) passes through the lock hole (216) and extends to a side of the first side plate (211) facing away from the second side plate (221). A locking piece (226) is also provided on the lock column (225).

7. The fan using a double-end output motor according to claim 6, characterized in that: The locking hole (216) is located at the edge of the first side plate (211), and the locking column (225) is located at the edge of the second side plate (221).

8. The fan using a double-end output motor according to claim 6, characterized in that: The locking member (226) is configured as a locking rod and is arranged perpendicularly to the locking column (225); the locking rod is rotatably connected to the locking column (225).

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