Efficient heat dissipation fan

Abstract

The utility model discloses an efficient heat dissipation fan which comprises fan blades, a fan outer frame, a heat dissipation cover plate and a motor stator, the heat dissipation cover plate and the motor stator are installed in the fan blades and the fan outer frame, the heat dissipation cover plate is connected with the motor stator, and a motor rotor is arranged in the middle of the side, opposite to the heat dissipation cover plate, of the motor stator. A fan power supply is arranged on one side, facing the heat dissipation cover plate, of the motor stator; the fan power supply comprises a heat dissipation metal block and a power supply power device attached to the heat dissipation metal block. By designing the heat dissipation metal block, the power supply power device can be erected and tightly attached to the power supply power device, the internal space is fully utilized to design the structure of the power supply power device, heat is transferred to the heat dissipation cover plate, the tooth pieces of the heat dissipation cover plate accord with a fluid dynamic flow path, and the heat can be just dissipated to the maximum extent.

Description

Technical Field

[0001] The utility model relates to the technical field of fan heat dissipation, in particular to a fan with high-efficiency heat dissipation. Background Art

[0002] When a high-power fan is operating, its internal power supply components generate significant heat. Improper heat dissipation can cause component temperatures to rise excessively, leading to fan failure. Current solutions include soldering the heat sink to the control board, increasing the thickness of the PCB copper layer, and increasing the number of vias to enhance heat dissipation. Alternatively, holes can be drilled in the fan power supply housing to allow air circulation, forgoing a high-level protection design.

[0003] However, the heat dissipation power density of the PCB's enhanced heat transfer is limited. When a certain heat flux density is reached, heat dissipation becomes increasingly difficult, leading to excessive device temperatures and malfunction. Drilling holes in the fan power supply housing cannot meet the fan's high protection level design requirements. Based on this, this application proposes a fan with efficient heat dissipation to address these shortcomings. Utility Model Content

[0004] The technical problem to be solved by the utility model is: how to solve the heat dissipation problem of a high-power fan so that the operating temperature of the fan power supply device meets the use requirements.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A fan with high-efficiency heat dissipation includes fan blades and a fan frame, and a heat dissipation cover plate and a motor stator installed inside the fan blades and the fan frame. The heat dissipation cover plate and the motor stator are connected, and a motor mover is provided at a middle position on a side of the motor stator facing away from the heat dissipation cover plate. A fan power supply is provided on a side of the motor stator facing the heat dissipation cover plate; the fan power supply includes a heat dissipation metal block and a power device bonded thereto.

[0007] This application designs a heat dissipation metal block to stand up the power supply power device and fit tightly with the power supply power device, making full use of the internal space to design its structure and transfer heat to the heat dissipation cover. The teeth of the heat dissipation cover conform to the fluid dynamics flow path, which can maximize the heat dissipation.

[0008] As a further solution of the present invention: a power device fixing hole is provided on the heat dissipation metal block, and a notch is provided at the bottom of the heat dissipation metal block, and the heat conducting surface of the heat dissipation metal block contacts the heat dissipation cover plate through an interface material.

[0009] As a further solution of the present invention: the heat dissipation metal block is made of aluminum alloy.

[0010] As a further solution of the present invention: the heat dissipation metal block is made of copper.

[0011] As a further solution of the present invention: a sealing ring is installed around the motor stator for sealing the heat dissipation cover.

[0012] As a further solution of the present invention: the side of the heat dissipation cover plate facing the motor stator is provided with an inner heat conducting surface, and the side of the heat dissipation cover plate facing away from the motor stator is provided with heat dissipation fins.

[0013] As a further solution of the present invention: the heat dissipation fins are distributed radially.

[0014] As a further solution of the present invention: the side of the heat dissipation cover facing away from the motor stator is installed in the fan outer frame, the motor mover is installed on the fan blades, and the fan blades are connected to the fan outer frame.

[0015] As a further solution of the present invention: a blade center shaft sleeve is provided at the middle position of the inner side of the fan blade, and the inner diameter of the blade center shaft sleeve is larger than the diameter of the motor stator.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] This application designs a heat dissipation metal block to stand up the power supply power device and fit closely with the power supply power device, making full use of the internal space to design its structure, transferring heat to the heat dissipation cover, and the teeth of the heat dissipation cover conform to the fluid dynamics flow path, which can maximize the heat dissipation; this application can greatly improve the power usage of the fan within a certain size range, increase the fan speed, air volume and air pressure, increase the ambient temperature of the fan, improve the protection level of the fan, and thus enhance the competitiveness of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a high-efficiency heat dissipation fan according to an embodiment of the present utility model;

[0019] Figure 2 This is a structural diagram of the high-efficiency heat dissipation fan from another perspective of an embodiment of the utility model;

[0020] Figure 3 This is an exploded view of the high-efficiency heat dissipation fan according to an embodiment of the present utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the motor stator and fan power supply according to an embodiment of the present utility model;

[0022] Figure 5 This is a structural diagram of a heat dissipation cover plate according to an embodiment of the present utility model;

[0023] Figure 6 This is a structural schematic diagram of the heat dissipation cover plate from another perspective of an embodiment of the utility model;

[0024] Figure 7 This is a schematic structural diagram of a heat dissipation metal block according to an embodiment of the present utility model;

[0025] Description of reference numerals:

[0026] 1. Fan blade; 11. Blade center sleeve;

[0027] 2. Fan frame;

[0028] 3. Heat dissipation cover; 31. Heat dissipation fins; 32. Inner heat conduction surface;

[0029] 4. Sealing ring;

[0030] 5. Motor stator;

[0031] 6. Motor mover;

[0032] 7. Fan power supply; 71. Heat dissipation metal block; 711. Power device fixing hole; 712. Notch; 713. Heat conduction surface; 72. Power supply device. DETAILED DESCRIPTION

[0033] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0034] Reference Figure 3 A fan with high-efficiency heat dissipation includes a fan blade 1, a fan outer frame 2, a heat dissipation cover 3, a sealing ring 4, a motor stator 5, a motor mover 6 and a fan power supply 7. The heat dissipation cover 3 is arranged on the upper part of the motor stator 5, the sealing ring 4 is arranged between the heat dissipation cover 3 and the motor stator 5, the motor mover 6 is arranged at the middle position of the lower part of the motor stator 5, and the fan power supply 7 is arranged on the top of the motor stator 5 and inside the heat dissipation cover 3;

[0035] Reference Figure 1 、 Figure 2 and Figure 3 The heat dissipation cover 3, sealing ring 4, motor stator 5, motor mover 6 and fan power supply 7 are located between the fan blade 1 and the fan outer frame 2. The top of the heat dissipation cover 3 is connected to the fan outer frame 2, the motor mover 6 and the motor stator 5 are connected to the fan blade 1, and then the fan blade 1 is fixed to the fan outer frame 2.

[0036] Furthermore, a blade center sleeve 11 is provided at the middle position of the inner side of the fan blade 1, the motor mover 6 is inserted in the middle of the motor stator 5, and is installed in the blade center sleeve 11, and the protruding part of the motor mover 6 is fixed to the fan blade 1. When working, the motor mover 6 rotates to drive the fan blade 1 to rotate; and the inner diameter of the blade center sleeve 11 is larger than the diameter of the motor stator 5, and the motor stator 5 can be partially located in the blade center sleeve 11, so the motor stator 5 will not affect the rotation of the fan blade 1.

[0037] Reference Figure 3 、 Figure 5 and Figure 6 The heat dissipation cover 3 is provided with heat dissipation fins 31 on the side facing away from the motor stator 5, wherein the heat dissipation fins 31 are designed in a radial shape as a whole, matching the path of air flowing into the fan blades, and the heat dissipation cover 3 is provided with an inner heat conduction surface 32 on the side facing the motor stator 5, wherein the inner heat conduction surface 32 can contact the heat conduction surface 713 in the fan power supply 7 through the interface material. The interface material here is generally made of thermal grease or thermal silicone pad, which is not limited in this application, so as to achieve the purpose of transferring heat to the outside of the heat dissipation cover 3.

[0038] Reference Figure 3 、 Figure 4 and Figure 7 The fan power supply 7 is installed at the end of the motor stator 5, that is, the end of the motor stator 5 facing the heat dissipation cover 3. The overall layout of the fan power supply 7 adapts to the circular shape of the motor stator 5. The sealing ring 4 installed around the motor stator 5 and the heat dissipation cover 3 form a high-protection seal inside the cavity.

[0039] Furthermore, the fan power supply 7 is composed of a PCB board, a power device 72, a heat dissipation metal block 71, resistors, capacitors and other circuit devices, which play the role of controlling the operation of the motor; the fan power supply 7 includes a heat dissipation metal block 71 and a power supply power device 72, wherein the power supply power device 72 is in contact with the heat dissipation metal block 71 through an interface material and is fixed through a power device fixing hole 711. The interface material here generally uses thermal grease or ceramic gasket, which is not limited in this application.

[0040] Furthermore, the bottom of the heat dissipation metal block 71 is provided with fixing holes for fixing to the fan power PCB. The heat dissipation metal block 71 is provided with power device fixing holes 711 and a notch 712. The notch 712 is provided at the bottom of the heat dissipation metal block 71 to avoid the short components on the fan power PCB. The heat dissipation metal block 71 is designed to be of a special shape. The present application designs two, one with an "L"-shaped structure and the other with a trapezoidal structure. This is to avoid some components and the rounded edge of the heat dissipation cover 3, so as to adapt to the inner heat conduction surface 32. The heat dissipation metal block 71 is generally made of aluminum alloy 6063 or copper with stronger thermal conductivity.

[0041] The specific operation principle of the application is as follows:

[0042] In use, the power supply power device 72 generates heat, which is then transferred to the heat dissipation metal block 71 through the interface material. The heat dissipation metal block 71 is designed to have a certain thickness and an irregular extension, so that it can diffuse the heat. Then, the heat is transferred to the heat dissipation fin 31 through the heat dissipation surface 713 of the heat dissipation metal block 71, the interface material and the inner heat conduction surface 32. When the fan is running, air flows through the heat dissipation fin 31 to take away the heat and blow it out of the other side of the fan. Thus, the design of the power supply power device generating a large amount of heat is achieved.

[0043] The above embodiments are only used to illustrate the technical solutions of the application, rather than limit them; although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the application.

Claims

1. A fan with high efficiency heat dissipation, characterized in that: The invention comprises a fan blade (1) and a fan outer frame (2), and a heat dissipation cover plate (3) and a motor stator (5) installed inside the fan blade (1) and the fan outer frame (2); the heat dissipation cover plate (3) and the motor stator (5) are connected, and a motor mover (6) is provided at the middle position of the side of the motor stator (5) facing away from the heat dissipation cover plate (3); a fan power supply (7) is provided on the side of the motor stator (5) facing the heat dissipation cover plate (3); and the fan power supply (7) comprises a heat dissipation metal block (71) and a power supply device (72) attached thereto.

2. The high-efficiency heat dissipation fan according to claim 1, characterized in that: A power device fixing hole (711) is provided on the heat dissipation metal block (71), and a notch (712) is provided at the bottom of the heat dissipation metal block (71). The heat conduction surface (713) of the heat dissipation metal block (71) contacts the heat dissipation cover plate (3) through an interface material.

3. The high-efficiency heat dissipation fan according to claim 2, characterized in that: The heat dissipation metal block (71) is made of aluminum alloy.

4. The high-efficiency heat dissipation fan according to claim 2, characterized in that: The heat dissipation metal block (71) is made of copper.

5. The high-efficiency heat dissipation fan according to claim 1, characterized in that: The motor stator (5) is surrounded by a sealing ring (4) for sealing the heat dissipation cover plate (3).

6. The high-efficiency heat dissipation fan according to claim 1, characterized in that: The heat dissipation cover plate (3) is provided with an inner heat conduction surface (32) on the side facing the motor stator (5), and the heat dissipation cover plate (3) is provided with heat dissipation fins (31) on the side facing away from the motor stator (5).

7. The high-efficiency heat dissipation fan according to claim 6, characterized in that: The heat dissipation fins (31) are distributed in a radial shape.

8. The high-efficiency heat dissipation fan according to claim 6, characterized in that: The side of the heat dissipation cover plate (3) facing away from the motor stator (5) is installed in the fan outer frame (2), the motor mover (6) is installed on the fan blade (1), and the fan blade (1) is connected to the fan outer frame (2).

9. The high-efficiency heat dissipation fan according to claim 8, characterized in that: A blade middle shaft sleeve (11) is provided at the middle position of the inner side of the fan blade (1), and the inner diameter of the blade middle shaft sleeve (11) is larger than the diameter of the motor stator (5).

Images