Cross-flow fan for PC (Personal Computer) case

Abstract

The utility model provides a cross-flow fan for a PC (Personal Computer) case, which comprises fan blades, an air duct shell and a flow guide cover, the air duct shell is arranged around the fan blades, and an air duct is formed between the inner wall of the air duct shell and the fan blades; the air inlet end of the air duct shell and the first end of the flow guide cover are spaced to form an air inlet, the air outlet end of the air duct shell and the second end of the flow guide cover are spaced to form an air outlet, the second end of the flow guide cover is provided with a protruding part, and the protruding part protrudes towards the fan blades. According to the cross-flow fan for the PC case, through cooperation of the air inlet grid plate, the air duct shell and the flow guide cover, the air outlet efficiency can be effectively controlled, and the heat dissipation performance of the cross-flow fan applied to the PC case is improved.

Description

Technical Field

[0001] This utility model belongs to the field of computer chassis technology, specifically relating to a cross-flow fan for PC chassis. Background Technology

[0002] The computer case is an important component of a computer, mainly used to house and secure the various parts. To ensure the proper functioning of the core circuitry components inside the computer case, a cooling system is usually installed.

[0003] Existing cooling devices for computer cases include cross-flow fans and axial fans. For example, Chinese utility model patent CN222337555U discloses a case structure with parallel cooling channels, including a case body and a cross-flow fan. The front end of the case body has a front panel, and the front panel or the side wall of the case body has an air inlet. The front panel and the front wall of the case body form a positioning area. At least one cross-flow fan is located within the positioning area. The cross-flow fan includes a pivot seat spaced apart and an impeller mounted on the pivot seat. One of the pivot seats has a rotating device that drives the impeller to rotate. The pivot seat is installed within the positioning area. The impeller is vertically arranged along the height direction of the case body. The impeller can drive fluid to flow from the air inlet towards the rear panel of the case body. The cross-flow fan disclosed in this patent has problems such as low airflow efficiency and poor adaptability. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a cross-flow fan for PC chassis that improves airflow efficiency.

[0005] To solve the above-mentioned technical problems, this utility model provides a cross-flow fan for PC chassis. Its main feature is that the cross-flow fan includes fan blades, a duct housing, and a guide shroud. The duct housing surrounds the fan blades and forms a duct between the inner wall of the duct housing and the fan blades. An air inlet is formed between the air inlet end of the duct housing and the first end of the guide shroud, and an air outlet is formed between the air outlet end of the duct housing and the second end of the guide shroud. The second end of the guide shroud has a protrusion that protrudes towards the fan blades.

[0006] Preferably, the protrusion is U-shaped, and the air inlet, air outlet, and protrusion all extend along the axial direction of the cross-flow fan.

[0007] Preferably, the duct housing is L-shaped, and the duct housing has a first housing, a second housing, and an arc-shaped housing connecting the first housing and the second housing. The air inlet of the duct housing is located in the first housing, and the air outlet of the duct housing is located in the second housing.

[0008] Preferably, the cross-flow fan includes an air inlet grid plate, which is installed at the air inlet. The air inlet grid plate is arranged parallel to the second housing and perpendicular to the first housing and the air guide shroud.

[0009] Preferably, the protrusion has a first end plate, a second end plate, and a connecting portion connecting the first end plate and the second end plate. The second end plate is connected to the main body of the air guide. The first end plate and the second end plate are both arranged parallel to the second housing. The air outlet is formed by a gap between the first end plate and the second housing.

[0010] Preferably, the main body of the flow guide is provided with several perforations.

[0011] Preferably, the cross-flow fan includes a main body frame, the duct housing is located on the main body frame and forms an inner cavity, the fan blades are installed in the inner cavity, the air guide is detachably installed on the main body frame, a receiving shell for accommodating the motor is provided below the inner cavity of the main body frame, the receiving shell has a lower cover, and an upper cover is provided at the top of the main body frame.

[0012] Preferably, the motor is equipped with a PWM speed control circuit module.

[0013] This utility model discloses a cross-flow fan for PC chassis. Through the cooperation of an air inlet mesh plate, an air duct shell, and a guide shroud, it can effectively control the air outlet efficiency and improve the heat dissipation performance of the cross-flow fan when applied to a PC chassis. Attached Figure Description

[0014] Figure 1 This is a front view of the cross-flow fan for PC chassis according to this utility model.

[0015] Figure 2 This is a side view of the cross-flow fan for PC chassis according to the present invention.

[0016] Figure 3 This is an exploded view of the cross-flow fan for PC chassis according to this utility model.

[0017] Figure 4 This is a cross-sectional view of the cross-flow fan for PC chassis according to this utility model. Detailed Implementation

[0018] To make the technical problem solved by this utility model clearer, the present utility model is further described below with reference to embodiments and accompanying drawings. The specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model.

[0019] like Figures 1 to 4 The diagram illustrates an embodiment of the cross-flow fan for a PC chassis according to this utility model. It relates to computer hardware heat dissipation, and is particularly suitable for mechatronic devices that improve heat dissipation efficiency through optimized airflow guidance and fan blade layout. The cross-flow fan includes fan blades 3, an airflow duct housing 4, and a guide shield 2. The airflow duct housing 4 surrounds the fan blades 3, forming an airflow duct between the inner wall of the airflow duct housing 4 and the fan blades 3.

[0020] like Figure 2 and Figure 4 As shown, the air inlet end of the duct housing 4 and the first end of the guide shroud 2 are spaced apart to form an air inlet. In this embodiment, the cross-flow fan also includes an air inlet grid plate 1, which is installed at the air inlet. The air inlet end of the duct housing 4 is connected to one side of the air inlet grid plate, and the opposite side of the air inlet grid plate is connected to the first end of the guide shroud 2. An air outlet 15 is formed between the air outlet end of the duct housing 4 and the second end of the guide shroud 2. The second end of the guide shroud 2 has a protrusion 5 that protrudes towards the fan blade 3. Figure 4 As shown, the protrusion 5 is U-shaped. On the one hand, the design of the protrusion 5, together with the air duct shell and the air guide, forms an air guiding structure, which better guides and intercepts the airflow, increases the air outlet speed, and improves the airflow guiding efficiency; on the other hand, the internal cavity of the protrusion 5 can be used to assemble light strips, and the light strips can be disassembled and assembled according to actual needs.

[0021] like Figures 1 to 3 As shown, the air inlet, air outlet 15, and protrusion 5 all extend along the axial direction of the cross-flow fan.

[0022] like Figure 4 As shown, the duct housing 4 is generally L-shaped. Specifically, the duct housing 4 has a first housing 11, a second housing 10, and an arc-shaped housing 12 connecting the first housing 11 and the second housing 10. The air inlet of the duct housing 4 is located in the first housing 11, and the air outlet of the duct housing 4 is located in the second housing 10.

[0023] The air inlet mesh plate 1 is arranged parallel to the second housing 10, and perpendicular to the first housing 11 and the air guide shroud 2. The air inlet mesh plate serves as the air inlet, thus the air inlet direction is perpendicular to the air outlet direction.

[0024] like Figure 4As shown, the protrusion 5 has a first end plate 14, a second end plate 13, and a connecting part that connects the first end plate 14 and the second end plate 13. The second end plate 13 is connected to the main body of the air guide shroud 2. The first end plate 14 and the second end plate 13 are both arranged parallel to the second housing 10. The air outlet 15 is formed between the first end plate 14 and the second housing 10 at intervals.

[0025] like Figures 1 to 3 As shown, the main body of the flow guide 2 has several perforations distributed along the axial direction.

[0026] like Figure 3 As shown, the cross-flow fan includes a main frame 8, with the duct housing 4 and the inlet mesh plate 1 integrally formed on the main frame 8 to form an inner cavity. The fan blades 3 are installed in the inner cavity, and the air guide shroud 2 is detachably installed on the main frame 8. A housing for accommodating the motor 6 is provided at the bottom of the inner cavity of the main frame 8, and the housing has a lower cover 7. An upper cover 9 is provided at the top of the main frame 8. The fan blades 3 are fixed to the main frame 8, the brushless motor passes through the shaft at the lower end of the main frame and is installed in the housing, and the air guide shroud 2 is locked to the chassis bracket by snaps. The upper and lower covers are then fastened together, thus assembling the cross-flow fan of this utility model. The fan blades can be made of aluminum alloy, and the air guide shroud and main frame can be made of resin plastic.

[0027] In this embodiment, the main body fixing frame 8 integrally forms the air duct shell 4 and the air inlet grid plate 1. Alternatively, the air inlet grid plate can be omitted from the main body fixing frame 8, that is, the cross-flow fan may not have an air inlet grid plate.

[0028] The motor is equipped with a PWM speed control circuit module. As temperature increases, the speed increases accordingly; as temperature decreases, the speed decreases accordingly, effectively controlling noise and achieving adaptive airflow adjustment based on temperature. The motor's output connector can be connected to the main control board of the chassis.

[0029] After multiple actual tests, when the cross-flow fan of this utility model is applied to a PC chassis, its heat dissipation performance, noise control, intelligent adaptation, and reliability are significantly improved.

[0030] This utility model discloses a cross-flow fan for PC chassis. Through the cooperation of an air inlet mesh plate, an air duct shell, and a guide shroud, it can effectively control the air outlet efficiency and improve the heat dissipation performance of the cross-flow fan when applied to a PC chassis.

[0031] The above descriptions are specific embodiments of this utility model and do not constitute a limitation on the scope of protection of this utility model. Any modifications and variations made to the technical concept of this utility model should be included within the scope of protection of this utility model.

Claims

1. A cross-flow fan for PC chassis, characterized in that, The cross-flow fan includes fan blades, a duct housing, and a guide shroud. The duct housing surrounds the fan blades and forms a duct between the inner wall of the duct housing and the fan blades. An air inlet is formed between the air inlet end of the duct housing and the first end of the guide shroud, and an air outlet is formed between the air outlet end of the duct housing and the second end of the guide shroud. The second end of the guide shroud has a protrusion that protrudes toward the fan blades.

2. The cross-flow fan for a PC chassis according to claim 1, characterized in that, The protrusion is U-shaped, and the air inlet, air outlet, and protrusion all extend along the axial direction of the cross-flow fan.

3. The cross-flow fan for a PC chassis according to claim 1, characterized in that, The air duct housing is L-shaped and has a first housing, a second housing, and an arc-shaped housing connecting the first housing and the second housing. The air inlet of the air duct housing is located in the first housing, and the air outlet of the air duct housing is located in the second housing.

4. The cross-flow fan for a PC chassis according to claim 3, characterized in that, The cross-flow fan includes an air inlet grid plate, which is installed at the air inlet. The air inlet grid plate is arranged parallel to the second housing and perpendicular to the first housing and the air guide shroud.

5. The cross-flow fan for a PC chassis according to claim 3, characterized in that, The protrusion has a first end plate, a second end plate, and a connecting part that connects the first end plate and the second end plate. The second end plate is connected to the main body of the air guide. The first end plate and the second end plate are both arranged parallel to the second housing. The air outlet is formed by a gap between the first end plate and the second housing.

6. The cross-flow fan for a PC chassis according to claim 5, characterized in that, The main body of the aforementioned air deflector has several perforations.

7. The cross-flow fan for a PC chassis according to claim 1, characterized in that, The cross-flow fan includes a main body frame, the duct housing is located on the main body frame and forms an inner cavity, the fan blades are installed in the inner cavity, the air guide is detachably installed on the main body frame, a receiving shell for accommodating the motor is provided below the inner cavity of the main body frame, the receiving shell has a lower cover, and an upper cover is provided on the top of the main body frame.

8. The cross-flow fan for a PC chassis according to claim 7, characterized in that, The motor is equipped with a PWM speed control circuit module.

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