Combined fan with detachable and interchangeable motor on base

Abstract

The combined fan comprises the base, an impeller, the motor, a PCB and a dustproof insulation cover ring, the size of the base is larger than that of a motor shell, the outer ring size of the dustproof insulation cover ring is matched with the base, and the inner ring size of the dustproof insulation cover ring is matched with the size of the motor shell. The center of the dustproof insulating cover ring is provided with a through hole for mounting a motor; the motor shell is arranged at the upper end of the dustproof insulating cover ring, and the dustproof insulating cover ring is arranged on the base; the capacitor is arranged on the PCB in a lying posture, and the lowest part of the capacitor is close to the bottom of the base. In this way, the motor shells of different sizes and the base of the large size can be subjected to size conversion butt joint so that motors of different sizes can be replaced, the height of the base can be made smaller, the area can be made larger, the efficiency of the driving plate and the efficiency of the fan can be made higher, and large-size elements such as a capacitor can be arranged in a flat mode so that the overall height of the fan can be remarkably reduced; therefore, the fan can be installed in equipment with limited installation height.

Description

Technical Field

[0001] The present invention relates to the technical field of blower fans, and in particular to a combined blower that can be applied to automotive air conditioners, new energy industries, industrial control, servers, game consoles, air conditioning cabinets, smart home appliances and other products. Background Art

[0002] Fans are used in many electrical products such as automotive air conditioners, new energy industries, industrial control, servers, game consoles, air conditioner cabinets, smart home appliances, etc. Figure 5 As shown, this type of fan generally includes an impeller, a base 1, a motor, a PCB board 4, etc. The motor is connected to a shaft core 8, the impeller is assembled and fixed with the motor housing 2 of the motor, the shaft core 8 is assembled with the base 1, and the PCB board 4 is installed in the base. For some EC high-power fans, the electronic components used are usually large in size, especially the capacitor 41, which is relatively long. Due to the limitations of the installation space and the power of the drive board, the motor housing 2 of the conventional fan cannot be made too large, otherwise it will not meet the driving requirements. At the same time, since the base 1 needs to be assembled with the motor housing 2, the installation space of the base 1 is limited and it must match the size of the motor housing 2 without being too high, which results in that the components such as the capacitor 41 with a larger size cannot be placed in a lying posture and can only be erected on the PCB board 4. The erection of the capacitor 41 and the like will result in a higher overall height of the motor, which will further cause the overall height of the fan to be higher after the motor is installed, and it is not possible to effectively save space, and it is not possible to adapt to some equipment with limited installation height, so only a fan with a smaller power can be selected. However, it is difficult for a low-power fan to match the heat dissipation requirements of the equipment, which will affect the normal operation of the equipment itself and reduce performance and service life. In addition, the heat dissipation module and the base 1 of the existing fan are usually integrated, and the heat of the module on the PCB board 4 is transferred to the base 1 through the heat dissipation glue to improve the heat dissipation performance. However, since the heat dissipation module cannot be disassembled, the heat dissipation module is actually idle for low power due to the small heat generation, which causes waste and increases costs. Summary of the invention

[0003] In view of the defects of the prior art, the present invention provides a combined blower and fan with a detachable base and interchangeable motor, which has a more reasonable structural design and can make the base larger and thinner in diameter so that components such as capacitors can be arranged flat, thereby reducing the overall height of the motor and blower.

[0004] In order to solve the above technical problems, the present invention adopts the following technical scheme: a combined fan with a detachable base and an interchangeable motor, comprising a base, an impeller, a motor and a PCB board, wherein the motor is installed on the middle tube of the base, the impeller is installed on the motor shell of the motor, and the PCB board is installed in the base, characterized in that: it also includes a dustproof insulating cover ring, the size of the base is larger than the size of the motor shell, the outer ring size of the dustproof insulating cover ring is adapted to the base, the inner ring size of the dustproof insulating cover ring is adapted to the size of the motor shell, and the center of the dustproof insulating cover ring has a through hole for installing the motor; the motor shell is installed on the upper end of the dustproof insulating cover ring, and the dustproof insulating cover ring is installed on the base; the capacitor or other larger-sized devices are installed on the PCB board in a flat posture, and the lowest part of the capacitor is close to the bottom of the base.

[0005] Furthermore, a circle of raised inner ring is arranged in the dustproof insulating cover ring near its central through hole, and a circle of docking ring is arranged near the outer edge of the dustproof insulating cover ring. There is a circle of docking groove between the inner ring and the docking ring, and the end of the motor housing is aligned with or inserted into the docking groove but does not contact the dustproof insulating cover ring.

[0006] Furthermore, a circle of docking edges with an L-shaped cross-section is provided on the top edge of the base, and a circle of plug-in edges protruding toward the base is provided on the outer edge of the dustproof insulating cover ring. The plug-in edges are inserted on the inner side of the docking edges and docked with the inside and outside of the docking edges to form an assembly and fixing structure of the dustproof insulating cover ring and the base.

[0007] Furthermore, a heat dissipation module which is independent of the base is arranged in the base, and a detachable fixing structure is adopted between the heat dissipation module and the base.

[0008] Furthermore, the heat dissipation module includes a first heat dissipation module, both ends of the heat dissipation module are respectively provided with fixing ears, and a screw column is provided in the base, and the first heat dissipation module is installed in the base by screwing the screws through the fixing ears and screwing them into the screw columns.

[0009] Furthermore, the heat dissipation module also includes a second heat dissipation module, and fixing ears are respectively arranged on both sides of the second heat dissipation module, and a screw column is arranged in the base, and the second heat dissipation module is installed in the base by screwing the screws through the fixing ears and screwing them into the screw columns.

[0010] Furthermore, the base is made of aluminum alloy material or metal coated with rubber, and a heat dissipation hole is arranged on the bottom surface of the base at a position aligned with the first heat dissipation module.

[0011] Wherein, the dustproof insulating cover ring is made of insulating material.

[0012] Preferably, the dustproof insulating cover ring is formed in one piece by injection molding using plastic material.

[0013] The present invention can perfectly combine the motor shell of a smaller motor with the base of a larger size by designing an interchangeable base size middle tube and a dustproof insulating cover ring as an intermediate transition piece, so as to achieve size conversion docking to replace motors of different sizes, so that the base diameter can be made larger without changing the size of the motor shell, and the efficiency of the drive plate and the fan can be made higher. In this way, large-sized electronic components such as capacitors can be arranged flat, so that the overall height of the motor fan can be significantly reduced, and the height reduction can reach 20-30mm. After the height of the motor is reduced, the overall height of the fan can be reduced, so that the fan can be installed in some equipment with limited installation height, and a fan with higher power can be installed under the same conditions, which significantly improves the heat dissipation performance of the equipment, and improves the working stability and service life. In addition, by making the heat dissipation module and the base into a separate structure, two base structures can be used, which are convenient to use and disassemble: that is, it can be used as a DC or conventional power base structure without the heat dissipation module, and it can be used as an EC or high-power structure base after the heat dissipation module is installed, thereby achieving the effect of reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the main part of the present invention; Figure 2 It is a three-dimensional structural schematic diagram of the main part of the present invention from another angle; Figure 3 It is a schematic diagram of the decomposition structure of the present invention; Figure 4 It is a schematic diagram of the cross-sectional structure of the main part of the present invention; Figure 5 It is a cross-sectional schematic diagram of the main part of the fan in the prior art.

[0015] In the figure, 1 is a base, 11 is a middle tube, 12 is a screw column, 13 is a docking edge, 14 is a heat dissipation hole, 2 is a motor housing, 3 is a dustproof insulating cover ring, 31 is a docking ring, 32 is a docking groove, 33 is a plug-in edge, 4 is a PCB board, 41 is a capacitor, 5 is a first heat dissipation module, 51 is a fixing ear, 6 is a second heat dissipation module, 61 is a fixing ear, 7 is an impeller, and 8 is a shaft core. DETAILED DESCRIPTION

[0016] In this embodiment, refer to Figure 1-Figure 4The combined fan with a detachable base and interchangeable motor includes a base 1, an impeller 7, a motor and a PCB board 4, which are installed on the middle tube 11 of the base 1, the impeller 7 is installed on the motor shell 2 of the motor, and the PCB board 4 is installed in the base 1; it also includes a dustproof insulating cover ring 3, the size of the base 1 is larger than the size of the motor shell 2, the outer ring size of the dustproof insulating cover ring 3 is adapted to the base 1, the inner ring size of the dustproof insulating cover ring 3 is adapted to the size of the motor shell 2, the center of the dustproof insulating cover ring 3 has a through hole for installing the motor, and dustproof insulating cover rings 3 of different specifications and middle tubes of different sizes can be prepared to adapt to motors of different specifications; the motor shell 2 is installed on the upper end of the dustproof insulating cover ring 3, and the dustproof insulating cover ring 3 is installed on the base 1, so that a smaller motor is adapted to a larger base 1; the capacitor 41 or a larger device is installed on the PCB board 4 in a lying posture, and the lowest part of the capacitor 41 is close to the bottom of the base 1, so that the height space occupied by the capacitor 41 can be reduced by about half, and the maximum can reach two or three centimeters.

[0017] A raised inner ring (not shown) is arranged near the central through hole of the dustproof insulating cover ring 3, and a butt joint ring 31 is arranged near the outer edge of the dustproof insulating cover ring 3. A butt joint groove 32 is formed between the inner ring and the butt joint ring 31. The end of the motor housing 2 is inserted into the butt joint groove 32 but does not contact the dustproof insulating cover ring 3. This not only serves the purpose of assembly, but also provides an effective dustproof effect.

[0018] A circle of docking edges 13 with an L-shaped cross-section is arranged on the top edge of the base 1, and a circle of plug-in edges 33 protruding toward the base 1 is arranged on the outer edge of the dustproof insulating cover ring 3. The plug-in edges 33 are inserted on the inner side of the docking edges 13 and docked with the docking edges 13 inside and outside to form an assembly and fixing structure of the dustproof insulating cover ring 3 and the base 1.

[0019] A heat dissipation module independent of the base is provided in the base 1, and a detachable fixing structure is adopted between the heat dissipation module and the base 1. For some fans with a small heat output, the heat dissipation module can be removed, which can save costs and avoid waste.

[0020] The heat dissipation module includes a first heat dissipation module 5, both ends of which are respectively provided with fixing ears 51, and a screw column 12 is provided in the base 1. The first heat dissipation module 5 is installed in the base 1 by screwing through the fixing ears 51 and screwing into the screw column 12.

[0021] The heat dissipation module also includes a second heat dissipation module 6, and fixing ears 61 are respectively arranged on both sides of the second heat dissipation module 6. A screw column is arranged in the base 1, and the second heat dissipation module 6 is installed in the base 1 by screwing the screws through the fixing ears 61 and screwing them into the screw columns.

[0022] The base 1 is made of aluminum alloy or metal coated with rubber, and a heat dissipation hole 14 is provided on the bottom surface of the base 1 at a position aligned with the first heat dissipation module 5 .

[0023] The dustproof insulating cover ring 3 is made of insulating material, and can be integrally formed by injection molding of plastic material, such as ABS, PA66, etc.

[0024] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made within the scope of this application should still fall within the scope of the present invention.

Claims

1. A combined fan with a detachable base and an interchangeable motor, comprising a base, an impeller, a motor and a PCB board, wherein the motor is mounted on a middle tube of the base, the impeller is mounted on a motor housing of the motor, and the PCB board is mounted in the base, characterized in that: It also includes a dustproof insulating cover ring, the size of the base is larger than the size of the motor shell, the outer circle size of the dustproof insulating cover ring is adapted to the base, the inner circle size of the dustproof insulating cover ring is adapted to the size of the motor shell, and the center of the dustproof insulating cover ring has a through hole for installing the motor; the motor shell is installed on the upper end of the dustproof insulating cover ring, and the dustproof insulating cover ring is installed on the base; the capacitor is installed on the PCB board in a flat posture, and the lowest part of the capacitor is close to the bottom of the base.

2. The combined fan with a detachable base and interchangeable motor according to claim 1, characterized in that: A circle of raised inner ring is arranged in the dustproof insulating ring near its central through hole, a circle of docking ring is arranged near the outer edge of the dustproof insulating ring, a circle of docking groove is formed between the inner ring and the docking ring, and the end of the motor housing is aligned with or inserted into the docking groove but does not contact the dustproof insulating cover ring.

3. The combined fan with a detachable base and interchangeable motor according to claim 1, characterized in that: A circle of butt joint edges with an L-shaped cross section is arranged on the top edge of the base, and a circle of plug-in edges protruding toward the base is arranged on the outer edge of the dustproof insulating cover ring. The plug-in edges are inserted into the inner side of the butt joint edges and butt joint with the inner and outer sides of the butt joint edges to form an assembly and fixing structure of the dustproof insulating cover ring and the base.

4. The combined fan with a detachable base and interchangeable motor according to claim 1, characterized in that: A heat dissipation module which is independent of the base is arranged in the base, and a detachable fixing structure is adopted between the heat dissipation module and the base.

5. The combined fan with a detachable base and interchangeable motor according to claim 4, characterized in that: The heat dissipation module comprises a first heat dissipation module. Both ends of the heat dissipation module are respectively provided with fixing ears. A screw column is provided in the base. The first heat dissipation module is installed in the base by screwing the screws through the fixing ears and screwing them into the screw columns.

6. The combined fan with a detachable base and interchangeable motor according to claim 5, characterized in that: The heat dissipation module also includes a second heat dissipation module. The second heat dissipation module is respectively provided with fixing ears on both sides. A screw column is provided in the base. The second heat dissipation module is installed in the base by screwing the screws through the fixing ears and screwing them into the screw columns.

7. The combined fan with a detachable base and interchangeable motor according to claim 5, characterized in that: The base is made of aluminum alloy material or metal coated with rubber, and a heat dissipation hole is arranged on the bottom surface of the base at a position aligned with the first heat dissipation module.

8. The combined fan with a detachable base and interchangeable motor according to claim 1, characterized in that: The dustproof insulating cover ring is made of insulating material.

9. The combined fan with a detachable base and interchangeable motor according to claim 1 or 8, characterized in that: The dustproof insulating cover ring is made of plastic material and is integrally formed by injection molding.

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