Pressurized cooling fan and instructions for use

Abstract

A pressurized cooling fan and instructions for use, which is designed specifically to solve poor cooling effect due to poor effect of pressurizing of existing similar products and the technical issues of inconvenience of production, and high production cost. The fan frame of this cooling fan is provided with inner blades, a motor assembly is provided in the guard of inner blades. Airflow enters into the fan frame through the gap between outer blades and inner blades, and is guided out through the hollow hole in the rear of the fan frame, the top plane of inner blades is lower than the frame plane of the fan frame; outer blades and inner blades are integrally connected and relatively rotate when the motor assembly rotates, the air passes through the rear part of the fan frame that is guided by the gap between the fan frame, outer blades and inner blades.

Claims

1. A pressurized cooling fan, comprising: a fan frame; a plurality of inner blades; and a plurality of outer blades, wherein the plurality of inner blades are disposed on an inner blades guard and together form an inner blades structure, and the inner blades guard is provided with a motor assembly, wherein the plurality of outer blades are disposed on an outer blades guard and together form an outer blades structure, wherein a diameter of the inner blades structure is larger than a diameter of the outer blades structure, wherein airflow is configured to enter into the fan frame through a gap between the outer blades and the inner blades, and is configured to be guided out through a hollow hole in a rear of the fan frame, wherein a top portion of the inner blades structure is disposed to be lower than a top portion of the fan frame, wherein the outer blades and the inner blades are integrally connected and relatively rotate when the motor assembly rotates, wherein the outer blades guard projects outside of an outermost surface of the fan frame, and the outer blades are provided outside of the outermost surface of the fan frame, wherein the outer blades guard is disposed within a ring of the inner blades guard, and the outer blades structure and the inner blades structure are connected to each other.

2. The pressurized cooling fan according to claim 1, wherein the outer blades are coaxially connected with the inner blades through the motor assembly.

3. The pressurized cooling fan according to claim 1, wherein the inner blades are single-rotor blades, the outer blades are pressurized blades, and an area of the outer blades is less than an area of the inner blades.

4. The pressurized cooling fan according to claim 3, wherein the inner blades are 5-blade vanes, and the outer blades are 7-blade vanes.

5. The pressurized cooling fan according to claim 1, wherein the inner blades guard includes a flat surface, the outer blades guard is provided at a center of the outer blades and is conical and convex, and the blades are provided on an outer diameter bevel of the outer blades guard.

6. The pressurized cooling fan according to claim 5, wherein the inner blades guard is a bevel.

7. A method of cooling with the pressurized cooling fan according to claim 1, the method comprising: driving, using the motor assembly, the inner blades, to cause the inner blades to rotate while the outer blades and inner blades relatively rotate, wherein the airflow passes through a rear part of the fan frame that is guided by the gap between the outer blades and the inner blades, so that the airflow is driven from the fan frame in an outer side of outer blades to one side of the inner blades in the fan frame.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a schematic view showing the mounting structure of the present invention, in which the arrow indicates the mounting direction.

(2) FIG. 2 is a schematic perspective view of the present invention.

(3) FIG. 3 is a schematic view of inner fans structure of the present invention.

(4) FIG. 4 is a partial cross-sectional structural view of the working principle of the present invention and the arrow indicates the airflow direction.

DESCRIPTION OF THE EMBODIMENT

(5) The structure and use of the present invention is now further described with reference to the attached drawings. As shown in FIG. 1-4, the fan frame 1 of this cooling fan is provided with inner blades 2, a motor assembly is provided in the inner blades guard 2a; in addition, the outer diameter of the top of the inner blades guard 2a is provided with outer blades 3 smaller than the diameter of inner blades 2, inner blades 2 are 5-blade single-rotor vanes, outer blades 3 are 7-blade pressurizing vanes, the area of outer blades 3 is smaller than that of inner blades 2, the top plane of inner blades 2 is lower than the frame plane of the fan frame 1, the top plane of inner blades 2 is lower than that of the frame opening of the fan frame 1. The top of the inner blades guard has a flat surface, the center of outer blades is provided with a outer blades guard 3a that is conical and convex, and the outer blades 3 are provided on the outer diameter bevel of the outer blades guard 3a; the diameter of the top of the inner blades guard 2a is smaller than the diameter of the rear part of the inner blades guard 2a, namely the inner blades guard 2a is bevel; the hollow hole of the fan frame is located in the outer side of the rear guard corresponding to the central axis of the guard.

(6) In the structure, outer blades 3 are integrally connected with inner blades 2 and relatively rotate when the motor assembly rotates, the connection between outer blades 3 and inner blades 2 is achieved by two methods: Scheme 1, the bottom part of the guard of outer blades 3 is relatively engaged with the top plane of the inner blades guard 2a through the ring 2b, when the motor assembly drives inner blades 2 to rotate, outer blades 3 rotate on inner blades 2 and keep integrally engaged; Scheme 2, outer blades 3 are coaxially connected with inner blades 2 through the motor assembly, the motor assembly drives inner and outer blades 2, 3 to rotate simultaneously, outer and inner blades 2, 3 relatively rotate through the motor assembly. In addition, the bottom part of the outer blades guard is engaged with the top plane of the inner blades guard, because the friction arising from the engagement between outer blades 3 and inner blades 2 is greater or smaller than the rotation of the motor assembly, outer and inner blades 3, 2 will also relatively rotate through the motor assembly.

(7) Its working principles are described below: the airflow enters into the fan frame through the gap between outer blades 3 and inner blades 2, and is guided out through the hollow hole in the rear of the fan frame 1. The motor assembly drives inner blades 2 to rotate, while outer blades 3 and inner blades 2 relatively rotate, the air passes through the rear part of the fan frame 1 that is guided by the gap between the fan frame, outer blades 3 and inner blades 2, so that the air is driven from the fan frame 1 in the outer side of outer blades 3 to one side of inner blades 2 in the fan frame 1.