A double-impeller heat-dissipating fan

Abstract

The utility model discloses a double -vane heat dissipation fan, including fan casing, the middle part of fan casing is equipped with double -out -shaft rotary motor, and the rotation axis on the front and back both ends of double -out -shaft rotary motor all are fixed with vane, the top plate and the bottom plate of fan casing's middle part all are shaped with the through -hole that extends to double -out -shaft rotary motor, and elastic sealing sleeve is clamped in the through -hole, and the upper portion and the lower portion of double -out -shaft rotary motor's middle part outside wall all are fixed with the locating piece, and the middle part of the outer end surface of locating piece is shaped with the locating hole, and the inboard wall of locating hole is fixed with the elastic clamping sleeve, and the locating rod is inserted in the elastic sealing sleeve. It adopts double -vane rotation, improves the heat dissipation effect, simultaneously, and its double -out -shaft rotary motor is positioned and fixed through a plurality of locating rods, and it only needs to pull out the locating rod, can make double -out -shaft rotary motor and fan casing separate, and it is convenient to clean dust etc.

Description

Technical fields:

[0001] This utility model relates to the field of chassis fan technology, and more specifically to a dual-impeller cooling fan. Background technology:

[0002] Existing chassis, such as computer cases and control cabinets, all require internal cooling fans. However, these fans are generally one-piece structures, with the fan motor fixed directly into the injection-molded fan housing during the injection molding process. These are all non-removable structures, which means that when a lot of dust and other substances adhere to the fan, cleaning can only be done by cleaning the entire fan, which is very troublesome. Moreover, some parts are not easy to reach or touch, resulting in incomplete cleaning and limited effectiveness.

[0003] Secondly, the unibody structure means that when the casing is damaged, the entire unit must be replaced, but the fan motor and impeller can still be used normally, resulting in waste.

[0004] Finally, existing fans only have a single impeller, and their heat dissipation effect is generally poor. Utility Model Content:

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a dual-impeller cooling fan. It uses dual impellers to rotate, which improves the heat dissipation effect. At the same time, its dual-output shaft rotating motor is fixed by multiple positioning rods. It is only necessary to pull out the positioning rods to separate the dual-output shaft rotating motor from the fan housing, which is convenient for cleaning dust, etc. Moreover, when the fan housing is damaged, the dual-output shaft rotating motor can be disassembled and reused separately, reducing waste.

[0006] The solution of this utility model to the aforementioned technical problem is:

[0007] A dual-impeller cooling fan includes a fan housing, wherein a dual-output shaft rotary motor is provided in the middle of the fan housing, and impellers are fixed on the rotating shafts at both ends of the dual-output shaft rotary motor.

[0008] The top and bottom plates of the fan housing are both formed with through holes extending towards the dual-output shaft rotary motor. The elastic sealing sleeve is inserted into the through holes. The upper and lower parts of the outer side wall of the middle part of the dual-output shaft rotary motor are fixed with positioning blocks. The middle part of the outer end face of the positioning block is formed with a positioning hole. The inner side wall of the positioning hole is fixed with an elastic retaining sleeve. The positioning rod is inserted into the elastic sealing sleeve, and its outer side wall is pressed against the inner side wall of the elastic sealing sleeve. The inner end of the positioning rod is inserted into the inner side wall of the corresponding elastic retaining sleeve. The outer end of the positioning rod extends out of the top or bottom surface of the fan housing. The outer end of the positioning rod is formed with a pressing part, and the inner end face of the pressing part is pressed against the top or bottom surface of the fan housing.

[0009] The left and right side plates of the fan housing are each formed with a transverse through hole extending towards the dual-output shaft rotary motor. The corresponding elastic sealing sleeve is inserted into the transverse through hole. The left and right sides of the outer side wall of the middle part of the dual-output shaft rotary motor are fixed with positioning blocks. The middle of the outer end face of the positioning block is formed with a positioning hole. The inner side wall of the positioning hole is fixed with an elastic retaining sleeve. The corresponding positioning rod is inserted into the elastic sealing sleeve, and its outer side wall is pressed against the inner side wall of the elastic sealing sleeve. The inner end of the positioning rod is inserted into the inner side wall of the corresponding elastic retaining sleeve. The outer end of the positioning rod extends out of the top or bottom surface of the fan housing. The outer end of the positioning rod is formed with a pressing part. The inner end face of the pressing part is pressed against the left or right side wall of the fan housing.

[0010] The fan housing has a cylindrical through hole running from front to back in the middle. A dual-output shaft rotary motor is inserted into the cylindrical through hole. The inner walls of the front and rear ends of the cylindrical through hole have outwardly radially extending grooves. The impeller faces the inner wall of the extending groove.

[0011] The upper and lower parts of both sides of the fan housing are formed with through holes running from front to back.

[0012] The rear part of the top plate of the fan housing is formed with a wire through hole, and the elastic sealing block is stuck on the inner side wall of the wire through hole.

[0013] The outstanding effect of this utility model is:

[0014] It uses a dual-impeller rotation to improve heat dissipation. At the same time, its dual-output shaft rotary motor is fixed by multiple positioning rods. Simply pull out the positioning rods to separate the dual-output shaft rotary motor from the fan housing, which is convenient for cleaning dust, etc. Moreover, when the fan housing is damaged, the dual-output shaft rotary motor can be disassembled and reused separately, reducing waste. Attached image description:

[0015] Figure 1 This is a partial front view of the present invention;

[0016] Figure 2 This is a partial sectional view of the present invention. Detailed implementation method:

[0017] For example, see below. Figures 1 to 2 As shown, a dual-impeller cooling fan includes a fan housing 10, a dual-output shaft rotary motor 11 is provided in the middle of the fan housing 10, and impellers 12 are fixed on the rotating shafts at both the front and rear ends of the dual-output shaft rotary motor 11.

[0018] The top and bottom plates of the fan housing 10 are each formed with through holes extending toward the dual-output-shaft rotary motor 11 in their middle portions, and the left and right side plates of the fan housing 10 are each formed with transverse through holes extending toward the dual-output-shaft rotary motor 11 in their middle portions.

[0019] The elastic sealing sleeve 13 is inserted into the through hole or the transverse through hole. The upper, lower, left and right parts of the middle outer side wall of the dual-output shaft rotary motor 11 are all fixed with positioning blocks 14. The middle part of the outer end face of the positioning block 14 is formed with a positioning hole. The inner side wall of the positioning hole is fixed with an elastic retaining sleeve 15. The positioning rod 20 is inserted into the elastic sealing sleeve 13. Its outer side wall is pressed against the inner side wall of the elastic sealing sleeve 13. The inner end of the positioning rod 20 is inserted into the inner side wall of the corresponding elastic retaining sleeve 15. The outer end of the positioning rod 20 extends out of the top or bottom surface of the fan housing 10. The outer end of the positioning rod 20 is formed with a pressing part 21. The inner end face of the pressing part 21 is pressed against the top surface, bottom surface, left side wall or right side wall of the fan housing 10.

[0020] Furthermore, the fan housing 10 has a cylindrical through hole 16 formed in the middle, and the dual-output shaft rotary motor 11 is inserted into the cylindrical through hole 16. The inner sidewalls of the front and rear ends of the cylindrical through hole 16 are formed with outwardly radially extending grooves 161, and the impeller 12 faces the inner sidewall of the extending grooves 161.

[0021] The upper and lower parts of both sides of the fan housing 10 are formed with through holes 1. The through holes 1 are used to fix the fan housing 10 in the corresponding positions after the fixing bolts are inserted into the through holes 1.

[0022] Furthermore, a wire through hole 2 is formed at the rear of the top plate of the fan housing 10, and an elastic sealing block 18 is fitted on the inner side wall of the wire through hole 2. The bottom end of the elastic sealing block 18 extends out of the bottom surface of the top plate of the fan housing 10, and a radial extension edge 181 is formed on its outer side wall. The top surface of the radial extension edge 181 presses against the bottom surface of the top plate of the fan housing 10.

[0023] The center of the elastic sealing block 18 is formed with a vertically extending mounting through hole.

[0024] The transverse through hole and the inner sidewall of the outer end of the through hole are both formed with radially extending annular grooves, and the outer sidewall of the outer end of the elastic sealing sleeve 13 is formed with a radially extending portion, which is nested in the corresponding annular groove.

[0025] The fan housing 10 is a plastic housing, and the elastic sealing sleeve 13, elastic sealing block 18 and elastic retaining sleeve 15 are all silicone or rubber parts.

[0026] In this embodiment, when in use, the electrical connection wire of the dual-output shaft rotary motor 11 can be inserted into the through hole formed in the middle of the elastic sealing block 18, and its outer end extends out of the outer end of the elastic sealing block 18.

[0027] This embodiment uses two rotating impellers 12 to achieve air blowing, which has a large air volume and good effect.

[0028] When a large amount of dust and other substances adhere to the impeller 12 and the fan housing 10, cleaning is required. All positioning rods 20 can be pulled out to separate the dual-output shaft rotary motor 11 from the fan housing 10. Then, the elastic sealing block 18 can be pulled out from the wire through hole 2, allowing the electrical connection wire of the dual-output shaft rotary motor 11 and the elastic sealing block 18 to enter the cylindrical through hole 16. Then, the dual-output shaft rotary motor 11 and other components can be removed from the cylindrical through hole 16 for individual cleaning, such as blowing air or wiping with a wet wipe. This is very convenient as it does not require disassembling the fan housing 10. Dust and other substances on the fan housing 10 can also be directly blown away or wiped with an alcohol wet wipe.

[0029] Once the cleaning is complete, you can then install it.

[0030] Meanwhile, when the fan housing 10 is damaged, it can be disassembled in the above manner, so that the dual-output shaft rotary motor 11 can be reused without having to be thrown away with the fan housing 10, thus reducing waste.

[0031] The above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, all equivalent technical solutions also fall within the scope of the present utility model. The patent protection scope of the present utility model should be defined by the claims.

Claims

1. A dual-impeller cooling fan, comprising a fan housing (10), characterized in that: The fan housing (10) is provided with a dual-output shaft rotary motor (11) in the middle, and impellers (12) are fixed on the rotating shafts at both the front and rear ends of the dual-output shaft rotary motor (11). The top and bottom plates of the fan housing (10) are both formed with through holes extending toward the dual-output shaft rotary motor (11). The elastic sealing sleeve (13) is inserted into the through hole. The upper and lower parts of the outer side wall of the middle part of the dual-output shaft rotary motor (11) are fixed with positioning blocks (14). The outer end face of the positioning block (14) is formed with a positioning hole. The inner side wall of the positioning hole is fixed with an elastic retaining sleeve (15). The positioning rod (20) is inserted into the elastic sealing sleeve (13). Its outer side wall is pressed against the inner side wall of the elastic sealing sleeve (13). The inner end of the positioning rod (20) is inserted into the inner side wall of the corresponding elastic retaining sleeve (15). The outer end of the positioning rod (20) extends out of the top or bottom surface of the fan housing (10). The outer end of the positioning rod (20) is formed with a pressing part (21). The inner end face of the pressing part (21) is pressed against the top or bottom surface of the fan housing (10).

2. The dual-impeller cooling fan according to claim 1, characterized in that: The left and right side plates of the fan housing (10) are each formed with a transverse through hole extending toward the dual-output shaft rotary motor (11) in the middle. The corresponding elastic sealing sleeve (13) is inserted into the transverse through hole. The left and right sides of the middle outer side wall of the dual-output shaft rotary motor (11) are each fixed with a positioning block (14). The outer end face of the positioning block (14) is formed with a positioning hole. An elastic retaining sleeve (15) is fixed on the inner side wall of the positioning hole. The corresponding positioning rod ( 20) The insert is placed in the elastic sealing sleeve (13), and its outer side wall is pressed against the inner side wall of the elastic sealing sleeve (13). The inner end of the positioning rod (20) is locked on the inner side wall of the corresponding elastic locking sleeve (15). The outer end of the positioning rod (20) extends out of the top or bottom surface of the fan housing (10). The outer end of the positioning rod (20) is formed with a pressing part (21). The inner end face of the pressing part (21) is pressed against the left or right side wall of the fan housing (10).

3. A dual-impeller cooling fan according to claim 1, characterized in that: The fan housing (10) has a cylindrical through hole (16) that runs from front to back in the middle. The dual-output shaft rotary motor (11) is inserted into the cylindrical through hole (16). The inner walls of the front and rear ends of the cylindrical through hole (16) have outwardly radially extending grooves (161). The impeller (12) faces the inner wall of the extending groove (161).

4. A dual-impeller cooling fan according to claim 1, characterized in that: The upper and lower parts of the left and right sides of the fan housing (10) are each formed with a through-hole (1) that runs from front to back.

5. A dual-impeller cooling fan according to claim 1, characterized in that: The rear part of the top plate of the fan housing (10) is formed with a wire through hole (2), and the elastic sealing block (18) is stuck on the inner side wall of the wire through hole (2). The bottom end of the elastic sealing block (18) extends out of the bottom surface of the top plate of the fan housing (10), and a radial extension edge (181) is formed on the outer side wall of its bottom end. The bottom surface of the radial extension edge (181) presses against the bottom surface of the top plate of the fan housing (10). The center of the elastic sealing block (18) is formed with a vertically extending mounting through hole.

6. A dual-impeller cooling fan according to claim 2, characterized in that: The transverse through hole and the inner sidewall of the outer end of the through hole are both formed with radially extending annular grooves, and the outer sidewall of the outer end of the elastic sealing sleeve (13) is formed with a radially extending portion, which is nested in the corresponding annular groove.

7. A dual-impeller cooling fan according to claim 5, characterized in that: The fan housing (10) is a plastic housing, and the elastic sealing sleeve (13), elastic sealing block (18) and elastic retaining sleeve (15) are all silicone or rubber parts.

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