Cooling device of variable speed motor control system

Abstract

A heat dissipation and cooling device of a variable-speed motor control system is mainly composed of a hood (1), fan blades (2), a variable-frequency upper cover (3), an axial flow cooling fan (4), a shaft sleeve (5), a circuit board (6), a variable-frequency middle cover (7) and a motor shaft (8), the motor shaft (8) drives the fan blades (2) to operate through the variable-frequency upper cover (3), the shaft sleeve (5), an electric circuit board sub-component circuit board (6) and the variable-frequency middle cover (7), a ventilation air channel is formed in the hood (1), and the variable-speed motor control system is cooled through the ventilation air channel. Air outside the motor is sucked into the frequency conversion upper cover (3) through an air inlet of the air cap (1) and flows out of the frequency conversion middle cover (7), the air circularly flows, and when the motor stops running, the axial flow fan cooling fan (4) is started to carry out heat dissipation on the circuit board sub-component circuit board (6) of the frequency conversion upper cover (3). By adopting the device, the cost of independently installing a heat dissipation and cooling device on the variable-speed motor is saved, and the heat dissipation efficiency of the heat dissipation and cooling control module of the variable-speed motor control system is greatly improved.

Description

Technical Field

[0001] The utility model relates to a variable speed motor control system cooling device, in particular to a variable speed motor cooling device which is easy to use, has high heat dissipation efficiency, reliable performance and can effectively ensure the safe operation of the motor. Background Art

[0002] At present, the heat dissipation problem of the cooling device of the variable speed motor control system is the biggest problem of the variable speed motor. The quality of the heat dissipation device of the variable speed motor control module directly affects the quality, efficiency and performance of the variable speed motor. At present, the heat dissipation of most variable speed motors on the market does not meet the requirements, resulting in excessively high temperature of the variable speed motor operation control module, serious reduction in efficiency and performance, and long-term operation may cause damage to the variable speed motor control module. Utility Model Content

[0003] In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides an intelligent variable speed motor with low failure rate, simple assembly, high performance and convenient maintenance.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A variable speed motor control system cooling device mainly comprises a hood (1), a fan blade (2), a variable frequency upper cover (3), a cooling fan (4), a shaft sleeve (5), a circuit board (6), a variable frequency middle cover (7), and a motor shaft (8), and is characterized in that all components are coaxial and concentric, the fan blade (2) can inhale circulating air from above, and when the motor stops running, the cooling fan (4) can dissipate heat from the circuit board (6) in the variable frequency upper cover (3).

[0006] The beneficial effects of the utility model are as follows: when the variable speed motor is running, the motor shaft drives the fan blades, and the motor shaft drives the operation of the fan blades through the frequency conversion upper cover, the shaft sleeve, the circuit board, and the frequency conversion middle cover. The ventilation duct formed in the hood draws the air outside the motor into the frequency conversion upper cover through the hood air inlet and flows out from the frequency conversion middle cover, allowing the air to circulate. When the motor stops running, the cooling fan starts to cool the circuit board inside the frequency conversion upper cover. This saves the cost of separately installing a cooling device for the variable speed motor control part and greatly improves the cooling efficiency of the variable speed motor control system module. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Attached Figure 1 It is a schematic diagram of the process structure of the utility model.

[0008] In the figure, there are a hood (1), a fan blade (2), a frequency conversion upper cover (3), a cooling fan (4), a shaft sleeve (5), a circuit board (6), a frequency conversion middle cover (7), and a motor shaft (8). DETAILED DESCRIPTION

[0009] The following will be combined with the attached Figure 1 , the specific implementation methods of the utility model are further described in detail:

[0010] As attached Figure 1 As shown, a variable speed motor control system cooling device mainly comprises a hood (1), a fan blade (2), a frequency conversion upper cover (3), a cooling fan (4), a shaft sleeve (5), a circuit board (6), a frequency conversion middle cover (7), and a motor shaft (8). The variable speed motor control part cooling device drives the fan blade (2) through the motor shaft (8), and the motor shaft (8) drives the fan blade (2) to operate through the frequency conversion upper cover (3), the shaft sleeve (5), the circuit board (6), and the frequency conversion middle cover (7). The ventilation duct formed in the hood (1) sucks the air outside the motor into the frequency conversion upper cover (3) through the air inlet of the hood (1) and flows out from the frequency conversion middle cover (7), so that the air circulates. When the motor stops running, the cooling fan (4) starts running to dissipate heat from the circuit board (6) of the frequency conversion upper cover (3). The use of this device saves the cost of installing a cooling device separately for the variable speed motor and greatly improves the cooling efficiency of the variable speed motor control module.

[0011] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Modifications or equivalent substitutions of the technical solution of the utility model without departing from the spirit and scope of the technical solution of the utility model should be included in the scope of the claims of the utility model.

Claims

1. A variable speed motor control system cooling device, mainly composed of a hood (1), a fan blade (2), a variable frequency upper cover (3), a cooling fan (4), a shaft sleeve (5), a circuit board (6), a variable frequency middle cover (7), and a motor shaft (8), characterized in that: All parts are coaxial and concentric.

2. A variable speed motor control system cooling device according to claim 1, characterized in that: The fan blades (2) can draw in circulating air from above, and when the motor stops running, the cooling fan (4) can dissipate heat and cool the circuit board (6) in the frequency conversion upper cover (3).

3. The variable speed motor control system cooling device according to claim 1, characterized in that: The fan blade (2) is driven to rotate by the motor shaft (8) to realize the function of the fan blade (2) to suck in circulating air, and when the motor stops running, the cooling fan (4) can dissipate heat from the circuit board (6) in the frequency conversion upper cover (3).

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