CN100585191C - Series module of radiating fan - Google Patents

Abstract

A series module of a heat dissipation fan comprises a first axial flow fan unit, a second axial flow fan unit, at least one connecting piece and at least one side air inlet. The first and second axial fan units are respectively provided with a first axial fan wheel and a second axial fan wheel, and can be arranged in series and positioned by the connecting piece. The side air inlet is formed on the periphery of the combination surface of the frame bodies of the first axial fan unit and the second axial fan unit so as to relatively increase the air inlet amount and the air outlet amount of the second axial fan unit, and when the first axial fan wheel of the first axial fan unit abnormally operates to reduce the air driving efficiency, the second axial fan wheel of the second axial fan unit can complement the air inlet amount through the side air inlet and avoid the uneven air flow density generated in the heat dissipation fan, thereby overcoming the defects of the prior art, and enabling the series module of the heat dissipation fan to have the effects of increasing the air inlet amount, reducing the noise and improving the overall heat dissipation efficiency.

Description

Serial module of cooling fan

technical field

The invention relates to a series module of a heat dissipation fan, in particular to a heat dissipation system that forms at least one air inlet on the periphery of the joint surface of the frame of the first and second axial flow fan units to increase the air intake and output air volume. Fan series modules.

Background technique

A serial module of a conventional heat dissipation fan, as shown in FIGS. 1 and 2 , includes a first axial fan unit 10 , a second axial fan unit 20 and a guide vane 30 . The first axial fan unit 10 is located on the air inlet side, the second axial fan unit 20 is located on the air outlet side, and the guide vane 30 is arranged at the base of a frame 100 of the first axial fan unit 10 , To provide guided airflow and increase wind pressure effect. Usually, the frames 100, 200 of the first and second axial flow fan units 10, 20 are correspondingly provided with several slots 11 and several fasteners 21, so as to provide the first and second axial flow fan units tightly 10 and 20 are combined into one body to form a serial module. In this way, the first and second axial flow fan units 10, 20 can use a first axial flow fan wheel (not shown) and a second axial flow fan wheel 22 respectively provided to jointly drive the airflow, so that the airflow can quickly Blow from the air inlet side to the air outlet side. Although the series module of the above-mentioned heat dissipation fan can be used to increase the amount of driving air and the flow rate of the air flow, it still has the following defects: (1) under the normal operation of the first and second axial flow fan units 10, 20, the cooling air flow can only be made by The single air inlet of the first axial flow fan unit 10 on the air inlet side sucks in, so that the total air output of the series modules is limited; (2) when the first axial flow fan unit 10 operates abnormally, the first axial flow fan The blade rotating speed of wheel is too low and will drag down the wind-dispelling efficiency of this second axial flow fan wheel 22, affects overall cooling efficiency; The air flow velocity at the flow fan wheel and the second axial flow fan wheel 22 is different, resulting in uneven air flow density, resulting in a decrease in the static pressure/flow rate characteristic (static Dressure-flow rate characteristic, P-Q characteristic) of the series module, and resulting in Lots of wind shear noise.

The inventor of the present invention feels that the known series modules of cooling fans have the above-mentioned defects, so he starts to conceive, and finally designs a series module of cooling fans of the present invention.

Contents of the invention

The technical problem to be solved by the present invention is to provide a series module of cooling fan, which forms at least one air inlet on the periphery of the series connection surface of the frame of the two axial flow fan units, so that the air flow can be simultaneously passed through the side air inlet. And the air inlet of the first axial flow fan unit flows into the heat dissipation fan, relatively increasing the total air intake and total air output of the series modules of the heat dissipation fan, so that the present invention has the effect of improving the overall heat dissipation efficiency.

Another technical problem to be solved by the present invention is to provide a series module of cooling fans, which forms at least one air inlet on the periphery of the series joint surface of the frames of the two axial flow fan units, so that the first axial flow fan unit When the unit is operating abnormally, the axial flow fan wheel of the second axial flow fan unit can supplement the air intake not immediately provided by the air inlet of the first axial flow fan unit through the side air inlet, and avoid generating airflow density inside the cooling fan unevenness, so as to reduce wind shear noise, so that the present invention has the effect of improving the overall heat dissipation efficiency.

The technical solution of the present invention is: a series module of cooling fan, which comprises,

A first axial flow fan unit, which is located on the air inlet side, and a first axial flow fan wheel is accommodated by a frame;

A second axial flow fan unit, which is located on the air outlet side, and a second axial flow fan wheel is accommodated by a frame;

at least one coupling member, which enables the first and second axial flow fan units to form a series arrangement and joint positioning; and

At least one side of the air inlet is formed between the first and second axial flow fan unit frames to relatively increase the air intake and air output of the second axial flow fan unit.

The series module of the above-mentioned cooling fan is additionally provided with at least one guide vane to guide the air flow and increase the wind pressure. The guide vane can be formed on the first axial flow fan unit and the second axial flow fan unit. The air inlet side and air outlet side of the frame of the fan unit.

As mentioned above in the serial module of the heat dissipation fan, the side air inlet is arranged on the joint surface of the frame of one of the axial flow fan units.

As for the series module of the heat dissipation fan, the side air inlets are provided on the joint surface of the frames of the first axial flow fan unit and the second axial flow fan unit at the same time.

As mentioned above in the serial module of the cooling fan, the combination parts are a plurality of slots and a plurality of fasteners.

As for the serial module of the above-mentioned cooling fan, the bottom of each fastener extends to form a spacer. When the first and second axial flow fan units are combined with the fastener through the slot, the The partition of the spacer enables the side air inlet to be formed between the joint surfaces of the frames of the first and second axial flow fan units.

As for the series module of the above-mentioned heat dissipation fan, the said combining parts are several screws and several spacers. The side air inlet is formed between the joining surfaces of the frames of the first and second axial flow fan units.

As for the tandem module of the heat dissipation fan as described above, the combination part is integrally formed to form several spacers between the first and second axial flow fan units, and the integrally formed spacers make the first and second The side air inlet is formed between the frames of the two axial flow fan units.

As for the serial module of the heat dissipation fan as described above, the connecting member is a connecting plate, which is arranged in series and combined and positioned on the connecting plate by the sides of the frames of the first and second axial flow fan units, and makes the one The axial flow fan units are spaced apart to form the side air inlets.

As mentioned above in the serial module of the cooling fan, the first axial flow fan unit and the second axial flow fan unit can connect more than one axial flow fan unit in series on the air inlet side and the air outlet side.

The characteristics and advantages of the present invention are: the series module of the cooling fan of the present invention forms at least one air inlet on the periphery of the joint surface of the frames of the first and second axial flow fan units. The side air inlet relatively increases the total air intake and total air output of the series modules of the cooling fan, and when the axial flow fan wheel of the first axial flow fan unit is running abnormally, the side air inlet can also supplement the first axial flow The air inlet of the fan unit does not immediately supply the air intake of the axial flow fan wheel of the second axial flow fan unit, and avoids uneven air flow density inside the cooling fan, thereby overcoming the defects of the prior art, and has the function of improving the cooling fan in series. The overall heat dissipation efficiency of the module and the effect of reducing wind shear noise are simple in structure and easy to implement.

Description of drawings

Fig. 1 is an exploded perspective view of a serial module of a known cooling fan;

Fig. 2 is a combined perspective view of the serial modules of the known cooling fan:

Fig. 3 is an exploded perspective view of the serial modules of the cooling fan according to the first embodiment of the present invention:

Fig. 4 is a combined perspective view of the series modules of the cooling fan according to the first embodiment of the present invention:

Fig. 5 is an exploded perspective view of the serial modules of the cooling fan according to the second embodiment of the present invention;

6 is a combined perspective view of the serial modules of the cooling fan according to the second embodiment of the present invention:

FIG. 7 is an exploded main view of the series modules of the cooling fan according to the third embodiment of the present invention;

8 is a combined perspective view of the serial modules of the cooling fan according to the third embodiment of the present invention;

9 is an exploded perspective view of a serial module of a cooling fan according to a fourth embodiment of the present invention;

Fig. 10 is a combined perspective view of the serial modules of the cooling fan according to the fourth embodiment of the present invention:

11 is an assembled perspective view of serial modules of a cooling fan according to a fifth embodiment of the present invention.

Explanation of reference numbers:

Detailed ways

In order to make the technical solutions, features, and advantages of the present invention more clearly understood, the preferred embodiments of the present invention will be specifically cited below, together with the accompanying drawings, and detailed descriptions are as follows:

Figure 3 discloses an exploded perspective view of the series module of the cooling fan according to the first embodiment of the present invention; Figure 4 discloses an assembled perspective view of the series module of the cooling fan according to the first embodiment of the present invention; Figure 5 discloses the second embodiment of the present invention An exploded perspective view of the serial modules of the cooling fan; FIG. 6 discloses a combined perspective view of the serial modules of the cooling fan according to the second embodiment of the present invention; FIG. 7 discloses an exploded perspective view of the serial modules of the cooling fan according to the third embodiment of the present invention; Figure 8 discloses a combined perspective view of the series module of the cooling fan of the third embodiment of the present invention; Figure 9 discloses an exploded perspective view of the series module of the cooling fan of the fourth embodiment of the present invention; Figure 10 discloses the fourth embodiment of the present invention An assembled perspective view of the serial modules of the cooling fan; and FIG. 11 discloses an assembled perspective view of the serial modules of the cooling fan according to the fifth embodiment of the present invention. Some components of the series module of the cooling fan of the present invention are the same as those of the known series module of the cooling fan in FIGS.

Please refer to FIGS. 3 and 4, the serial module of the cooling fan according to the first embodiment of the present invention includes a first axial flow fan unit 10, a second axial flow fan unit 20, at least one binding piece and at least one side inlet Tuyere 101. The first axial flow fan unit 10 is located at the air inlet side. The second axial flow fan unit 20 is located at the air outlet side. The first and second axial flow fan units 10, 20 respectively accommodate a first axial flow fan wheel (not shown) and a second axial flow fan wheel 22 by a frame body 100, 200, while the first and second axial flow fan units In the second axial flow fan unit 10 , 20 , the joint part and the side air inlet 101 are formed by the peripheries of the opposite joint surfaces of the frames 100 , 200 . The connecting parts of the first embodiment are preferably several slots 11 and several fasteners 21, which can arrange and combine the first and second axial flow fan units 10, 20 in series and position. The side air inlet 101 is selected to be recessed on the periphery of the joint surface of the frame body 100, 200 of one of the axial flow fan units 10, 20, and the side air inlet 101 can make an air flow channel 12 inside the cooling fan and the outside of the cooling fan connected. Thereby, the side air inlet 101 can relatively increase the air intake and air output of the second axial flow fan unit 20 . In particular, when the first axial fan unit 10 operates abnormally and reduces the wind driving efficiency of the first axial fan wheel, the axial fan wheel 22 of the second axial fan unit 20 can also enter through the side The air inlet 101 complements the air intake originally provided by the air inlet of the first axial flow fan unit 10 . At this time, the amount of air inhaled by the side air inlet 101 can also compensate for the uneven airflow density temporarily formed in the airflow channel 12 due to the inconsistency of the driving air volume of the first axial flow fan wheel and the second axial flow fan wheel 22 Therefore, the side air inlet 101 can also relatively reduce the probability of generating noise when the first axial flow fan unit 10 operates abnormally.

Furthermore, in the first embodiment of the present invention, at least one guide vane 30 can also be provided for guiding the airflow and increasing the wind pressure. The guide vane 30 can be selected to be formed on the air inlet side and the air outlet side of the frames 100 , 200 of the first axial fan unit 10 and/or the second axial fan unit 20 according to product requirements.

Please refer to FIGS. 5 and 6 again, which disclose the serial module of the cooling fan according to the second embodiment of the present invention. Compared with the first embodiment, in the second embodiment, one side air inlets 101, 201 are respectively formed on the periphery of the joint surfaces of the frame bodies 100, 200 of the first and second axial flow fan units 10, 20, so that the present invention The invention can further increase the suction range of the side air inlets 101 , 201 , and relatively increase the amount of air sucked by the side air inlets 101 , 201 by the axial fan wheel 22 of the second axial fan unit 20 .

Please refer to FIGS. 7 and 8 , which disclose the serial module of the cooling fan according to the third embodiment of the present invention. Compared with the first and second embodiments, the combination parts of the third embodiment are also several slots 11 and several fasteners 21 , but the bottom of each fastener 21 is further extended to form a spacer 211 . In this way, when the first and second axial flow fan units 10, 20 are arranged in series and combined and positioned by using the slot 11 and the fastener 21, the first and second axial flow fan units can be separated by the spacer 211. The side air inlet 101 ′ is formed between the joining surfaces of the frames 100 , 200 of the second axial flow fan units 10 , 20 . The side air inlet 101' can also relatively increase the air intake and air output of the second axial flow fan unit 20, and at the same time, the way of forming the side air inlet 101' by using the spacer 211 does not need to greatly redesign the second axial flow fan unit. Advantages of the frame body 100 , 200 basic structure of the first and second axial flow fan units 10 , 20 .

Please refer to FIGS. 9 and 10 again, which disclose the serial modules of the cooling fan according to the fourth embodiment of the present invention. Compared with the first to third embodiments, the coupling elements of the fourth embodiment are replaced by several screws 40 and several spacers 41 . The screw 40 sequentially passes through several through holes 23 of the second axial fan unit 20, spacers 41 and several screw holes 13 of the first axial fan unit 10, so that the first and second axial fan units 10 and 20 form a series arrangement and combined positioning. At the same time, at least one side of the air inlet 101' is formed between the joint surfaces of the frame bodies 100, 200 of the first and second axial flow fan units 10, 20 through the partition of the spacer 41, so as to relatively expand the air inlet 101'. The air intake and air output of the second axial flow fan unit 20 . The method of forming the side air inlet 101' by using the screw 40 and the spacer 41 in the fourth embodiment also has the advantage of not needing to redesign the basic structure of the frames 100, 200 of the first and second axial flow fan units 10, 20 advantage.

Furthermore, the combining member of the fourth embodiment of the present invention can also form a plurality of spacers 41 between the first and first axial flow fan units 10 , 20 integrally. That is, in the present invention, the first axial fan unit 10 , the plurality of spacers 41 and the second axial fan unit 20 can be directly formed by integral molding by injection molding. In this way, the present invention does not need to use the screw 40, and at least one air inlet 101' can be formed between the frames 100, 200 of the first and second axial flow fan units 10, 20 by the integrally formed spacer 41.

Please refer to FIG. 11 again, which discloses a series module of a cooling fan according to a fifth embodiment of the present invention. Compared with the first to fourth embodiments, the fifth embodiment expands the number of axial flow fan units in series to more than three, that is, the first axial flow fan unit 10 and the second axial flow fan unit 20 can be selected. A third axial flow fan unit 50 is connected in series on the wind inlet side and the wind outlet side. As shown in FIG. 11 , in the present invention, a third axial fan unit 50 is connected in series on the air inlet side of the first axial fan unit 10 . The frames 100, 200, 500 of the axial flow fan units 10, 20, 50 can be combined with the above-mentioned connecting parts, for example, the slot 11 and the fastener 21 in FIG. 3, the slot 11 and the spacer 211 in FIG. 7 The fastener 21 or the screw 40 and the spacer 41 of FIG. 9 . Simultaneously, the combination part of the fifth embodiment can also be replaced by a combination plate 60 of any form, so that not only can the side sides of the frames 100, 200, 500 of the axial flow fan units 10, 20, 50 utilize appropriate combination methods ( Such as bonding, fastening, screwing and welding) are arranged in series and combined to be positioned on the connecting plate 60 , and the air inlet 501 on one side can be directly formed by keeping the two axial flow fan units 10 , 50 at an appropriate distance. The side air inlet 501 can also increase the air intake and air output of the second axial flow fan unit 20 relatively, and the formation of the side air inlet 501 does not affect the first and second axial flow fan units 10,20. The basic structure of the original module.

As mentioned above, compared with the series axial flow fan of the known heat dissipation fan in Fig. 1, the airflow is sucked only by the air inlet of a single axial flow fan unit, so that the abnormal operation of the first axial flow fan unit often causes defects such as reduced wind driving efficiency and noise generation. 3, the present invention of Fig. 3 can indeed set at least one side air inlet 101 on the periphery of the joint surface of the frame body 100, 200 of the first and second axial flow fan unit 10, 20, so that the serial module of the cooling fan has an increased The effect of air intake, noise reduction and overall improvement of cooling efficiency.

Although the present invention has been disclosed with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make replacements of equivalent components without departing from the concept and scope of the present invention, or replace them according to the present invention. The equivalent changes and modifications made in the scope of patent protection shall still fall within the scope of this patent.

Claims (10)

1. A tandem module of a cooling fan, characterized in that: the tandem module of the cooling fan includes a first axial flow fan unit, which is located on the air inlet side, and a first shaft is accommodated by a frame Flow fan wheel; a second axial flow fan unit, which is located on the air outlet side, and a second axial flow fan wheel is accommodated by a frame; at least one joint, which makes the first and second axial flow fan units Forming series arrangement and combined positioning; and at least one air inlet, which is formed between the frames of the first and second axial flow fan units, so as to relatively increase the air intake and air output of the second axial flow fan unit. 2. The series module of cooling fans according to claim 1, characterized in that: there is also at least one guide vane to guide the airflow and increase the wind pressure, and the guide vane can be formed on the first The air inlet side or the air outlet side of the frame of the axial flow fan unit or the second axial flow fan unit. 3. The serial module of the heat dissipation fan according to claim 1, wherein the side air inlet is provided on the joint surface of the frame of one of the axial flow fan units. 4 . The serial module of cooling fans according to claim 1 , wherein the side air inlets are provided on the joint surfaces of the frames of the first axial flow fan unit and the second axial flow fan unit. 5. The serial module of the heat dissipation fan according to claim 1, wherein the connecting parts are several slots and several fasteners. 6. The series module of cooling fan according to claim 5, characterized in that: the bottom of each fastener extends to form a spacer, when the first and second axial flow fan units use the slot and the fastener to connect When combined, the side air inlet is formed between the joint surfaces of the frames of the first and second axial flow fan units through the partition of the spacer of the fastener. 7. The serial module of cooling fan according to claim 1, characterized in that: the said connecting parts are several screws and several spacers, when said first and second axial flow fan units use the screws and spacers When combined, the side air inlet is formed between the joint surfaces of the frame bodies of the first and second axial flow fan units through the division of the spacer. 8. The serial module of the heat dissipation fan according to claim 1, characterized in that: the combination part is integrally formed to form several spacers between the first and second axial flow fan units, and the integrally formed The spacer forms the side air inlet between the frames of the first and second axial flow fan units. 9. The serial module of the heat dissipation fan according to claim 1, wherein the connecting member is a connecting plate, which is arranged in series and combined and positioned by the frame sides of the first and second axial flow fan units On the connecting plate, keep the axial flow fan unit at a distance to form the side air inlet. 10. The serial module of cooling fans according to claim 1, characterized in that: the first axial fan unit and the second axial fan unit can be connected in series with more than one axial fan on the air inlet side and the air outlet side unit.

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