CN201065855Y - Fan frame structure, fan adopting the fan frame and cooling device equipped with the fan - Google Patents

Abstract

The utility model discloses a fan frame structure for a cooling fan, the cooling fan and a heating device including the cooling fan. The fan frame structure includes a body with an air inlet and an air outlet, and at least one set of installation holes are arranged at intervals on both sides of the inner periphery or the outer edge of the air outlet of the body. The fan frame structure further includes at least one movable dust shield, which has two pin shafts, which can be arranged in the installation hole, so that when the cooling fan stops running, the movable dust shield can automatically rotate to a closed position to effectively Prevent foreign matter from entering the machine equipment.

Description

Fan frame structure, fan adopting the fan frame and cooling device equipped with the fan

technical field

The utility model relates to a fan frame structure of a heat dissipation device, the heat dissipation fan and a heating device including the heat dissipation fan, and more particularly relates to a fan frame structure with the function of preventing foreign objects from entering a heat dissipation device, the heat dissipation fan and A heating device including the cooling fan.

Background technique

Please refer to Figure 1. Figure 1 shows the common heat dissipation system in electromechanical equipment at present. It mainly uses an independent fan cooling module, which is installed on the air duct where the electromechanical equipment structure needs heat dissipation, and is located on the electromechanical equipment machine at the position opposite to the fan cooling module. On the shell, there is an air outlet with a honeycomb hole baffle. Through the operation of the fan cooling module, the high heat generated inside the electromechanical equipment is discharged outside through the air outlet (as shown by the arrow in the figure). The honeycomb hole baffle, in addition to being used for the conduction of internal and external airflow, also needs to take into account the prevention of foreign matter falling into the electromechanical equipment to prevent damage to the electromechanical equipment and the fan cooling module.

However, when the fan cooling module stops running, small foreign objects such as dust, paper and leaves outside the electromechanical equipment will enter the system of the electromechanical equipment through the small holes of the honeycomb hole baffle and the gap between the fan blades of the fan cooling module , resulting in different degrees of damage; larger foreign matter, if it does not enter the system, is also easy to adhere to the honeycomb hole baffle, resulting in lower heat dissipation efficiency during the next operation. In addition, in electromechanical equipment with multiple fan cooling modules, if a fan cooling module fails and stops running, because other fans are still running, the faulty fan cooling module will still be connected to the outside world, which is extremely difficult. It is easy to naturally absorb the exhausted heat flow back, and the so-called "heat flow backflow" phenomenon occurs, which affects the overall heat dissipation effect of the electromechanical equipment system.

In view of this, the current common improvement method is to install a sponge-like filter in front of the air outlet of the heat dissipation system of the electromechanical equipment to increase the airtightness of the air outlet and prevent the invasion of small-sized foreign objects. However, the sponge-like filter will increase the impedance of the air flow of the heat dissipation system, thereby reducing the heat dissipation effect of the system, and the sponge-like filter also has disadvantages such as not being resistant to high temperatures. Therefore, it is necessary to redesign the fan cooling module for electromechanical equipment that is prone to high heat, so as to improve the protection function of preventing foreign objects from intruding.

Utility model content

The purpose of this utility model is to provide a fan frame structure that can effectively prevent dust and will not generate excessive resistance to thermal airflow when applied to a cooling fan.

To achieve the above object, the utility model provides a fan frame structure for a cooling fan, which includes a body, the body includes an air inlet and an air outlet, the improvement is that the fan frame structure further includes at least one movable baffle The dust plate is suitable for moving to a closed position when the heat dissipation fan is stopped, so as to at least partially cover the movable dust plate of the air outlet.

Another object of the present invention is to provide a cooling fan for a heating device, wherein the cooling fan includes the aforementioned fan frame structure.

Another object of the present invention is to provide a heating device, which includes a heat dissipation fan, and the heat dissipation fan includes the aforementioned fan frame structure.

The fan frame structure provided by the utility model can make when the rotor in the cooling fan stops running, the dust shield on the fan frame structure can automatically close the air outlet by relying on its own gravity, or by means of external force such as electric power and manpower, which can effectively prevent Dust enters the electromechanical equipment; when several cooling fans are used together, and one or more of the cooling fans fails, the dust baffle on the failed cooling fan can also be automatically closed, and the other cooling fans can operate normally. When working, it will not cause the heat flow generated by the system to flow back into the system through the faulty fan, reducing the heat dissipation function of the system.

Description of drawings

Fig. 1 is a schematic diagram of an electromechanical device with a cooling fan in the prior art;

Figure 2A is a schematic diagram of a cooling fan with a fan frame structure in a preferred embodiment of the invention;

Fig. 2B is a side view of a cooling fan with a fan frame structure in a preferred embodiment of the invention;

Fig. 3 is a preferred embodiment of the invention, a schematic diagram of several movable dust panels with different outlines

Figure 4A is a schematic diagram of the operation of a cooling fan with a fan frame structure in a preferred embodiment of the invention;

Fig. 4B is a schematic diagram of another viewing angle of Fig. 4A; and

Fig. 5 is a preferred embodiment of the invention, a schematic diagram of a heating device including a plurality of cooling fans.

Description of main component symbols:

10: Cooling fan 20: Fan frame structure

22: Body 24: Air inlet

26: Air outlet 28: Movable dust shield

30: Mounting hole 32: Pin shaft

40: Chassis 41: Side wall

Detailed ways

Please refer to FIG. 2A and FIG. 2B together, which shows a fan frame structure 20 for a cooling fan 10 disclosed in this creation, wherein the fan frame structure 20 includes a body 22, and is used to accommodate the cooling fan 10 An accommodating space in the main body 22; the main body 22 includes an air inlet 24 and an air outlet 26, which are respectively located on two sides of the cooling fan, and serve as passages for discharging hot air.

Please refer to FIG. 3 , the fan frame structure 20 further includes at least one movable dust shield 28 disposed adjacent to the air outlet 26 . In a preferred embodiment of the present invention, the body 22 has at least one set of mounting holes 30 located on a periphery adjacent to the air outlet 26, wherein the periphery is an inner periphery or an outer periphery adjacent to the air outlet 26 can be. If the installation hole 30 is arranged on the inner periphery of the adjacent air outlet 26, the body 22 of the fan frame structure 20 will be closer to the air outlet 26 (as shown by the BB line in Fig. 2A and Fig. 2B) than the adjacent The air inlet 24 (as shown by the AA line in Figure 2A and Figure 2B ) has a wider peripheral structure to facilitate the installation of the installation hole 30 and facilitate the accommodation of the movable dust shield 28 in the air outlet hole 26 years ago.

In addition, the fan frame structure 20 can include a plurality of movable dust baffles according to actual needs (for example, conforming to the outline of the fan frame structure 20 in the air outlet 26), such as two, three or four movable dust baffles (as shown in the embodiment of Figure 3, all designated by number 28), wherein each movable dust shield 28 all comprises two pin shafts 32, which are located at the upper end of the movable dust shield 28 two sides, and the lengths of the pin shafts 32 are different , the appropriate length can be adjusted according to the actual application situation, so that the movable dust shields 28 can be respectively fixed in the two opposite mounting holes 30 of the fan frame structure 20, so that each movable dust shield 28 can be positioned according to the pin shaft 32 Air outlet 26 places freely rotate.

In addition, there are no restrictions on the materials for the movable dust shield 28, but it is better to use materials that are light in weight, not easily deformed, and have a small surface friction coefficient. Adjust it so that the contours of its two end edges substantially match the peripheral contours of the fan frame structure 20 adjacent to the air outlet 26 . Please refer to FIG. 4A and FIG. 4B , which show a schematic view of the movable dust shield 28 installed on the fan frame structure 20 . When the cooling fan 10 was in operation, the movable dust shield 28 could be opened by the thrust of the airflow (as shown by the arrow in the figure) generated by the operation of the cooling fan 10 toward the outer side of the air outlet 26, so that the cooling fan 10 would The hot air is discharged to the outside of the air outlet 26 so that the cooling fan 10 can operate normally. On the other hand, when the cooling fan 10 stops running, the movable dust shield 28 can be moved to a closed position, so as to at least partially cover the air outlet 26 and reduce the chance of intrusion of tiny foreign matter from the outside.

In the preferred embodiment of this creation, the movable dust plate 28 is suitable for carrying out a gravity type mechanical movement. When the cooling fan 10 stops running, the movable dust plate 28 can automatically move to the closed position by its own gravity, and the outer shape of the movable file dust plate 28 can cover the air outlet 26 of the fan frame structure 20. . To be more specific, the gravitational mechanical movement of the movable dust shield 28 is a rotary motion; when the cooling fan stops running, the movable dust shield 28 is no longer subjected to the thrust of the airflow discharged by the cooling fan 10, so by its own gravity , The movable dust shield plate 28 is suitable for automatically turning to the expected closed position.

Please refer to Figure 5, which shows that in specific applications, several cooling fan modules with the fan frame structure of the present invention can be jointly assembled in a machine device (such as a projector, a data access device, or a personal computer/ server). If when cooling fan is running, one or several cooling fans break down, the movable dust baffle 28 of its fan frame structure of the cooling fan that breaks down will be closed automatically, and other cooling fans will maintain normal operation to discharge hot air (such as As indicated by the arrow in the illustration), and avoid the problems of heat flow backflow reducing heat dissipation effect and the like in the prior art.

It should be noted that the aforementioned movable dust shield can be returned to the closed position by using other technical means. For example, there can be an electrical linkage between the movable dust shield and the heat dissipation fan; when the heat dissipation fan stops running, the movable document dust shield will automatically move to the closed position by means of an electric control device (not shown). In addition, in another embodiment, the movable dust shield can also be manually operated; when the cooling fan stops running, the movable dust shield can be returned to the closed position through manual operation.

In addition, the above-mentioned fan frame structure of this invention can be applied to various devices. For example, after the fan frame structure can be directly combined with a cooling fan as mentioned above, this modular cooling fan with the function of blocking foreign objects can be applied. In any mechanical equipment that needs heat dissipation, it can keep the internal system of the mechanical equipment clean and prolong its service life.

On the other hand, depending on actual needs, the aforementioned fan frame structure can also be directly integrated with a heating device with a heat source inside (such as a high-heat light bulb, a high-speed hard disk, or a central processing unit) instead of integrating the fan frame structure. It is an integrated module with the cooling fan. Specifically, the fan frame structure is arranged relative to the position of the cooling fan in the heating device, so that the cooling fan can still use the wind to open the movable file dust plate on the fan frame structure when it is running; When the fan stops running, the movable file dust plate on the fan frame structure returns to the closed position. For example: if the heating device further includes a casing 40, and when the casing 40 has a side wall 41, the heat dissipation fan system can be located in the casing 40 adjacent to the side wall 41, so that it is located on the casing 40. The movable dust shield 28 can coordinately play the functions of exhausting waste heat and blocking foreign matter.

The above-mentioned embodiments are only illustrative to illustrate the construction principle and effect of the present invention, and are not intended to limit the present invention. Any person who is familiar with this technique can modify and change the above-mentioned embodiments without violating the technical principle and spirit of this creation. Therefore, the protection scope of the rights of this creation should be listed in the scope of the patent application mentioned later.

Claims (9)

1. fan frame structure that is used for radiation fan comprises: a body, comprise an intake grill and an exhaust outlet, and it is characterized in that: this fan frame structure more comprises at least one movable dust board, part at least to cover the movable dust board of this exhaust outlet.

2. fan frame structure according to claim 1, its feature exists, and wherein this at least one movable dust-blocking plate system and this radiation fan are the electric power interlock.

3. fan frame structure according to claim 1, it is characterized in that, wherein this body has at least one group of mounting hole, be located at one of this exhaust outlet periphery, this at least one movable dust board comprises two bearing pins, is located at end on its two side, and this at least one movable dust board is fixedly arranged on respectively in this at least one group of mounting hole, make respectively and should must rotate freely in this exhaust outlet about this bearing pin by the activity dust board.

4. fan frame structure according to claim 3 is characterized in that, wherein should periphery, and be one of this exhaust outlet inner periphery.

5. fan frame structure according to claim 3 is characterized in that, wherein should periphery, and be one of this exhaust outlet outer periphery.

6. the fan frame structure according to claim 1 is characterized in that, wherein the profile of two end margins of this at least one movable dust board respectively is in fact to be fit to peripheral profile within this exhaust outlet.

7. one kind is used for one of electro-heat equipment radiation fan, it is characterized in that, comprises fan frame structure according to claim 1.

8. a sink comprises a radiation fan, it is characterized in that, this radiation fan comprises as fan frame structure according to claim 1.

9. sink according to claim 8, other comprises a casing, it is characterized in that, and it has wall on one side, and this radiation fan system is located at and abuts this limit wall in this casing, and this at least one movable dust board is to be located on this casing.

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