A blowing and suction integrated fan

Abstract

A blower and suction integrated fan comprises: a casing, wherein the front and rear ends of the casing are respectively provided with a first air guide assembly and a second air guide assembly, and a drive unit is provided in the casing; the first air guide assembly comprises a first air guide cover and a first impeller, the first air guide cover is connected to the front end of the casing and covers the first impeller, and the first impeller is connected to the first power output end of the drive unit to obtain power; the second air guide assembly comprises: a second air guide cover and a second impeller, the second air guide cover is connected to the rear end of the casing and covers the second impeller, and the second impeller is connected to the second power output end of the drive unit to obtain power. The beneficial effect is that the blower and suction integrated fan of the present invention can be used for two purposes, and can meet the functions of blowing and sucking at the same time, and the fan material is efficiently utilized, saving material. The terminal product space is saved, thereby reducing the product volume. One machine has two purposes, that is, it can blow and suck, and is easy to use.

Description

Technical Field

[0001] The present invention belongs to the field of driving devices, and in particular relates to a blower-suction integrated fan. Background Art

[0002] Currently, most commonly used fans have one-way air outlet. They use impellers with fixed air guide directions to draw air in from the front and discharge it from the rear, forming a one-way high-speed airflow. Therefore, products equipped with such fans often only have one of the functions of suction or blowing. If a product is to achieve both blowing and suction functions, it needs to be equipped with a fan in each direction. This increases the size of the product, increases the difficulty of design and production, and also increases the cost. Summary of the Invention

[0003] In order to solve the above problems, the present invention provides an integrated blowing and suction fan.

[0004] The present invention adopts the following technical solutions:

[0005] A blowing and suction integrated fan comprises: a casing, wherein a first air guide assembly and a second air guide assembly are respectively provided at the front and rear ends of the casing, and a driving unit for driving the first air guide assembly and the second air guide assembly is provided in the casing; the first air guide assembly comprises a first air guide cover and a first impeller, the first air guide cover is connected to the front end of the casing and covers the first impeller, and the first impeller is connected to the first power output end of the driving unit to obtain power; the second air guide assembly comprises: a second air guide cover and a second impeller, the second air guide cover is connected to the rear end of the casing and covers the second impeller, and the second impeller is connected to the second power output end of the driving unit to obtain power.

[0006] Optionally, the first impeller is a centrifugal impeller.

[0007] Optionally, the second impeller is an axial flow impeller.

[0008] Optionally, a second air duct and a third air duct located outside the second air duct are provided in the second air duct.

[0009] Optionally, a plurality of inclined second guide vanes are provided in the second air duct.

[0010] Optionally, a plurality of third guide vanes are provided in the third air duct along the axial direction of the second air guide cover, and the width of the middle portion of the third guide vane is greater than the width of the end portion of the third guide vane, forming a ventilation duct that is wide at both ends and narrow in the middle.

[0011] Optionally, the casing includes: a first end cover and a second end cover cooperatively connected to the first end cover, the edge of the first end cover is provided with a first air duct, and a plurality of inclined first guide vanes are provided in the first air duct.

[0012] Optionally, a first air outlet for allowing air to enter and exit is formed on the first air guide cover.

[0013] Optionally, the drive unit includes: a stator, a rotor, a bearing and a terminal block, the rotor is inserted into the stator, the part of the rotor located in the stator is provided with a magnet, the bearings are respectively provided on the first end cover and the second end cover, the first power output end of the rotor passes through the bearing located on the first end cover and is connected to the first impeller, the second power output end of the rotor passes through the bearing located on the second end cover and is connected to the second impeller, and the terminal block is provided on the stator.

[0014] The beneficial effects of the present invention lie in the fact that the integrated blower and suction fan of the present invention can serve two purposes simultaneously, fulfilling both blowing and suction functions. In practical applications, the motor, because it integrates both blowing and suction functions, efficiently utilizes the fan material, saving space and materials compared to conventional motors. Furthermore, the integrated nature of the motor saves space in the end product, thereby reducing the product size. For users, the dual-purpose blower and suction fan are convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the split state structure of the present invention;

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0017] Figure 3 This is a schematic diagram of the first end cover structure of the present invention;

[0018] Figure 4 for Figure 3 Schematic diagram of the AA cross-section structure;

[0019] Figure 5 This is a schematic structural diagram of the second air guide cover of the present invention;

[0020] Figure 6 for Figure 5 Schematic diagram of the BB cross-section structure;

[0021] Figure 7 for Figure 5 Schematic diagram of the CC cross-section structure. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Example

[0023] like Figure 1 、 2 As shown, a blowing and suction integrated fan comprises: a casing 1, wherein the front and rear ends of the casing 1 are respectively provided with a first air guide component 2 and a second air guide component 3, and a driving unit 4 for driving the first air guide component 2 and the second air guide component 3 is provided in the casing 1; the first air guide component 2 comprises a first air guide cover 21 and a first impeller 22, the first air guide cover 21 is connected to the front end of the casing 1 and covers the first impeller 22, and the first impeller 22 is connected to the first power output end 4a of the driving unit 4 to obtain power; the second air guide component 3 comprises: a second air guide cover 31 and a second impeller 32, the second air guide cover 31 is connected to the rear end of the casing 1 and covers the second impeller 32, and the second impeller 32 is connected to the second power output end 4b of the driving unit 4 to obtain power.

[0024] Since the first impeller 22 and the second impeller 32 are driven by the driving unit 4 to rotate in the same direction, airflows in different directions can be generated according to the different rotation directions of the driving unit 4. The airflow can be sucked into the casing 1 by the first air guide component 2 and then discharged by the second air guide component 3, or sucked into the casing 1 by the second air guide component 3 and then discharged by the first air guide component 2. The rotation direction of the driving unit 4 can be adjusted according to usage needs to obtain airflow in the corresponding direction.

[0025] like Figure 1 As shown, the first air duct 21 is provided with a first air outlet 211 for air flow in and out. The first air duct 21 is located at the front end of the fan. After the air flow is sucked into the first air duct 21, the first impeller 22 rotating at high speed accelerates the air flow and flows it toward the rear end of the fan, or the air flow flowing at high speed flows out from the first air duct 21.

[0026] like Figure 1 As shown, preferably, the first impeller 22 is a centrifugal impeller, which creates a strong negative pressure to suck the air flow from the first air outlet 211.

[0027] like Figure 1 As shown, preferably, the second impeller 32 is an axial flow impeller, which accelerates the passing airflow axially to increase the air outlet / inlet efficiency.

[0028] By combining centrifugal impellers with axial flow impellers, the motor can obtain strong airflow acceleration capability in different driving directions, thus avoiding the situation where a single impeller has low efficiency or even fails in forward and reverse rotation.

[0029] like Figure 1 、 3As shown in Figures 4 and 5, the casing 1 includes: a first end cover 11 and a second end cover 12 connected to the first end cover 11. A first air duct 111 is provided at the edge of the first end cover 11. A plurality of inclined first guide vanes 112 are provided in the first air duct 111 for reducing the air intake resistance of the airflow and improving the fluid efficiency of the airflow.

[0030] like Figure 1 、 2 As shown, the drive unit 4 includes: a stator 41, a rotor 42, a bearing 43 and a terminal block 44. The rotor 42 is inserted into the stator 41. The part of the rotor 42 located in the stator 41 is provided with a magnet 45. The bearings 43 are respectively provided on the first end cover 11 and the second end cover 12. The first power output end 4a of the rotor 42 passes through the bearing 43 located on the first end cover 11 and is connected to the first impeller 22. The second power output end 4b of the rotor 42 passes through the bearing 43 located on the second end cover 12 and is connected to the second impeller 32. The terminal block 44 is provided on the stator 41 to provide the required working current for the coil in the stator 41 to generate a magnetic field, thereby driving the rotor 42 with the magnet 45 to rotate.

[0031] like Figure 5 、 6 As shown in Figures 7 and 8, the second air duct 31 is provided with a second air duct 311 and a third air duct 312 located outside the second air duct 311. The second air duct 311 is provided with a plurality of second guide vanes 313 arranged at an angle, and the third air duct 312 is provided with a plurality of third guide vanes 314 arranged along the axial direction of the second air duct 31. The width of the middle portion of the third guide vanes 314 is greater than the width of the ends of the third guide vanes 314, forming a ventilation duct that is wide at both ends and narrow in the middle. This causes the incoming airflow to be compressed when passing through the narrow middle portion, and then generates accelerated airflow at the wider outlet to increase the outlet speed.

[0032] The second air guide cover 31 is configured with a third air duct 312 outside the second air duct 311 to meet the air flow requirements of the first impeller 22 and the second impeller 32 when they generate different flow rates. Its purpose is to compensate for the air volume and wind speed generated by the first impeller 22 and the second impeller 32 to reduce the loss in the air guide system, and give full play to and efficiently utilize the air volume and wind speed generated by the impeller.

[0033] The first guide vane 112 and the second guide vane 313 are tilted in a manner that they are arranged at a certain angle to the central axis of the fan or have a varying arc.

[0034] The beneficial effects of the present invention lie in the fact that the integrated blower and suction fan of the present invention can serve two purposes simultaneously, fulfilling both blowing and suction functions. In practical applications, the motor, because it integrates both blowing and suction functions, efficiently utilizes the fan material, saving space and materials compared to conventional motors. Furthermore, the integrated nature of the motor saves space in the end product, thereby reducing the product size. For users, the dual-purpose blower and suction fan are convenient to use.

Claims

1. A blower and suction integrated fan, characterized in that: include: A casing (1), wherein the front and rear ends of the casing (1) are respectively provided with a first air guide assembly (2) and a second air guide assembly (3); a driving unit (4) for driving the first air guide assembly (2) and the second air guide assembly (3) is provided in the casing (1); the first air guide assembly (2) comprises a first air guide cover (21) and a first impeller (22); the first air guide cover (21) is connected to the front end of the casing (1) and covers the first impeller (22); the first impeller (22) is connected to the first power output end (4a) of the driving unit (4) to obtain power; the second air guide assembly (3) comprises a second air guide cover (31) and a second impeller (32); the second air guide cover (31) is connected to the rear end of the casing (1) and covers the second impeller (32); the second impeller (32) is connected to the second power output end (4b) of the driving unit (4) to obtain power; The first impeller (22) is a centrifugal impeller; The second air guide cover (31) is provided with a second air duct (311) and a third air duct (312) located outside the second air duct (311); A plurality of third guide vanes (314) are arranged in the third air duct (312) along the axial direction of the second air guide cover (31), and the width of the middle portion of the third guide vanes (314) is greater than the width of the end portion of the third guide vanes (314), forming a ventilation duct that is wide at both ends and narrow in the middle.

2. The integrated blowing and suction fan according to claim 1, characterized in that: The second impeller (32) is an axial flow impeller.

3. The integrated blowing and suction fan according to claim 1, characterized in that: A plurality of second guide vanes (313) arranged obliquely are provided in the second air duct (311).

4. The integrated blowing and suction fan according to claim 1, characterized in that: The casing (1) comprises: a first end cover (11) and a second end cover (12) cooperatively connected to the first end cover (11); a first air duct (111) is provided at the edge of the first end cover (11); and a plurality of inclined first guide vanes (112) are provided in the first air duct (111).

5. The integrated blowing and suction fan according to claim 1, characterized in that: The first air guide cover (21) is provided with a first air outlet (211) for air flow in and out.

6. The integrated blowing and suction fan according to claim 4, characterized in that: The drive unit (4) comprises: a stator (41), a rotor (42), a bearing (43) and a terminal block (44); the rotor (42) is arranged in the stator (41); a magnet (45) is provided on the portion of the rotor (42) located in the stator (41); the bearing (43) is respectively arranged on the first end cover (11) and the second end cover (12); a first power output end (4a) of the rotor (42) passes through the bearing (43) located on the first end cover (11) and is connected to the first impeller (22); a second power output end (4b) of the rotor (42) passes through the bearing (43) located on the second end cover (12) and is connected to the second impeller (32); and the terminal block (44) is arranged on the stator (41).

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