Radiator fan and radiator

Abstract

The utility model provides a radiator fan and a radiator, and relates to the technical field of electronic products, the radiator fan comprises a mounting frame, a first fan blade and a second fan blade; wherein the mounting frame is provided with an air inlet end far away from the heat dissipation fins and an air outlet end close to the heat dissipation fins; the first fan blade is rotationally arranged at the air outlet end of the mounting frame, and the working surface faces the direction of the cooling fins; the second fan blade is rotationally arranged at the air inlet end of the mounting frame, and the working surface faces the direction of the cooling fins; the first fan blade and the second fan blade are coaxially arranged and are the same in air outlet direction, and the axial size of the first fan blade is larger than that of the second fan blade. Therefore, the fan has the advantages of being large in air pressure at the air outlet end, large in air volume, good in heat dissipation effect and appropriate in total volume.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic products, in particular to a radiator fan and a radiator. Background Art

[0002] As the functions of chips become more and more powerful, the heat generated by chips is also getting higher and higher. Therefore, a heat sink is usually set up to dissipate the heat generated by the chip into the air to achieve heat dissipation of the chip. The heat sink usually includes a base, a heat pipe, heat dissipation fins and a fan; the heat generated by the chip is transferred from the base of the heat sink to the heat pipe, and then transferred to the heat dissipation fins by the heat pipe. The fan blows room temperature air to the heat dissipation fins to speed up the air flow rate between the heat dissipation fins to improve the heat dissipation efficiency. In the prior art, the fan usually adopts a single-blade structure. Although it can meet the basic heat dissipation requirements, the heat dissipation efficiency still needs to be improved under high load or high temperature environment.

[0003] To this end, some inventors have designed a technical solution to increase the air supply volume by arranging two blades of the same size in parallel. However, this technical solution also has some shortcomings. For example, if two blades of the same original size are configured, the overall volume of the radiator will increase significantly, which is not conducive to the utilization of space; if two identical blades are set to keep the size change small, the size of the original blade must be reduced. In this way, the measured air volume and wind pressure are limited compared with the original single-blade fan.

[0004] Therefore, a radiator fan and a radiator with large wind pressure at the air outlet, large wind volume, good heat dissipation effect, and appropriate total volume need to be designed. Utility Model Content

[0005] The purpose of the utility model is to provide a radiator fan and a radiator to address the defects and shortcomings of the prior art, and to solve at least one of the above-mentioned technical problems. The radiator fan and the radiator have the advantages of high wind pressure and large air volume at the air outlet, good heat dissipation effect, and appropriate total volume.

[0006] In order to achieve the above-mentioned object, the utility model provides a radiator fan including:

[0007] The mounting frame has an air inlet end away from the heat sink fins and an air outlet end close to the heat sink fins;

[0008] A first fan blade is rotatably disposed at the air outlet end of the mounting frame, with a working surface facing the heat dissipation fins;

[0009] A second fan blade is rotatably disposed at the air inlet end of the mounting frame, with a working surface facing the heat dissipation fins;

[0010] The first fan blade and the second fan blade are coaxially arranged and have the same air outlet direction, and the axial dimension of the first fan blade is greater than the axial dimension of the second fan blade.

[0011] Optionally, the first fan blade and the second fan blade rotate in opposite directions.

[0012] Optionally, the first blade and the second blade have the same blade airfoil profile.

[0013] Optionally, the first blade and the second blade have different blade airfoils.

[0014] Optionally, the non-driving end of the first impeller hub faces the cooling fins, and the non-driving end of the second impeller hub faces away from the cooling fins.

[0015] Optionally, the mounting frame includes an outer frame, and a mounting frame coaxially configured with the outer frame, the outer frame and the mounting frame are connected by connecting ribs, and the first fan blade and the second fan blade are both rotatably configured on the mounting frame.

[0016] Optionally, four corner regions of the outer frame are axially provided with assembly holes for assembling the mounting frame onto the heat dissipation fins.

[0017] Optionally, the radiator fan also includes a driving member which is arranged in the mounting frame and has an output end drivingly connected to the first fan blade and the second fan blade for driving the first fan blade and the second fan blade to rotate.

[0018] On the other hand, the utility model provides a radiator, comprising: a base, a heat pipe, cooling fins, and a fan; the base is connected in contact with the surface of a heat source and is used to absorb heat generated by the heat source; one end of the heat pipe is connected to the base, and the other end is connected to the cooling fins and is used to transfer the heat generated by the heat source from the base to the cooling fins; the fan is the radiator fan as described above, and the air outlet end of the radiator fan is assembled and connected to the cooling fins to accelerate the heat dissipation of the cooling fins.

[0019] Compared with the prior art, the advantages of this application are:

[0020] Since the radiator fan includes a first blade and a second blade that are coaxially arranged, have the same air outlet direction, and have working surfaces facing the direction of the heat sink fins, the first blade is located at one end close to the heat sink fins, and the second blade is located at one end away from the heat sink fins, and since the axial dimension of the first blade is larger than the axial dimension of the second blade. In this way, the total volume of the radiator fan can be controlled to be not much changed or unchanged, and the second blade as an auxiliary blade can be used to assist the flow of the first blade as the main blade, and the superimposed and overlapping air volume can be used to increase the wind pressure and air volume at the air outlet end of the first blade, thereby improving the heat dissipation effect; thus, it has the advantages of high wind pressure and air volume at the air outlet end, good heat dissipation effect, and appropriate total volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0022] Figure 1 This is a front view of the radiator fan of the utility model embodiment;

[0023] Figure 2 This is a rear view of the radiator fan of the utility model embodiment;

[0024] Figure 3 A schematic structural diagram of a radiator fan from one perspective of an embodiment of the utility model;

[0025] Figure 4 This is a schematic diagram of the exploded structure of the radiator fan of the utility model embodiment;

[0026] Figure 5 This is a side view of the exploded structure of the radiator fan of the embodiment of the utility model;

[0027] Figure 6 This is a front view of the first fan blade of the embodiment of the utility model;

[0028] Figure 7 This is an axonometric view of the first fan blade of the embodiment of the utility model;

[0029] Figure 8 This is a front view of the second fan blade of the embodiment of the utility model;

[0030] Fig. 9 This is an axonometric view of the second fan blade of the embodiment of the utility model;

[0031] Fig.10 An axonometric view of a mounting frame of an embodiment of the utility model from one perspective;

[0032] Fig.11 An axonometric view of another perspective of the installation frame of the embodiment of the utility model;

[0033] Description of Reference Numerals

[0034] 100- Radiator fan;

[0035] 1-installation frame; 11-outer frame; c-assembly hole; d-concave-convex structure; e-weight reduction groove; 12-installation frame; 13-connecting rib;

[0036] 2- first fan blade;

[0037] 3- Second fan blade;

[0038] a-working surface;

[0039] b-air outlet direction;

[0040] 4-wheel hub; f-non-drive end face. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0042] It should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "back", "side", "circumferential" and the like in the present invention indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. In addition, the words "first", "second" and the like are only used to distinguish multiple components or structures with the same or similar structures, and do not represent any special limitation on the setting order or connection relationship.

[0043] Please refer to Figures 1 to 5On the one hand, an embodiment of the utility model provides a radiator fan 100, including: a mounting frame 1, a first blade 2, and a second blade 3. Among them, the mounting frame 1 has an air inlet end away from the heat dissipation fins (not shown in the figure) and an air outlet end close to the heat dissipation fins; the first blade 2 is rotatably configured at the air outlet end of the mounting frame 1, and the working surface a is facing the heat dissipation fins; the second blade 3 is rotatably configured at the air inlet end of the mounting frame 1, and the working surface a is facing the heat dissipation fins; it should be pointed out that the working surface a of the blade refers to the blade surface in the same direction as the air flow direction, and the non-working surface refers to the blade surface opposite to the air flow direction. Taking this embodiment as an example, please refer to Figure 4 The first blade 2 and the right blade surface of the second blade 3 are working surfaces a, and the back surface is a non-working surface a (not shown in the figure). The first blade 2 and the second blade 3 are coaxially arranged and have the same air outlet direction b. The axial dimension h1 of the first blade 2 is greater than the axial dimension h2 of the second blade 3.

[0044] Since the radiator fan 100 includes a first blade 2 and a second blade 3 which are coaxially arranged, have the same air outlet direction b, and have working surfaces a facing the direction of the heat sink fins, the first blade 2 is located at one end close to the heat sink fins, and the second blade 3 is located at one end away from the heat sink fins, and since the axial dimension h1 of the first blade 2 is greater than the axial dimension h2 of the second blade 3. In this way, the total volume of the radiator fan 100 can be controlled to be not much changed or unchanged, and the second blade 3 as an auxiliary blade can be used to assist the flow of the first blade 2 as the main blade, and the air volume can be superimposed and overlapped to increase the wind pressure and air volume at the air outlet end of the first blade 2, thereby improving the heat dissipation effect; thus, it has the advantages of high wind pressure and air volume at the air outlet end, good heat dissipation effect, and appropriate total volume.

[0045] In order to further increase the air volume of the radiator fan 100 and thus improve the air outlet effect, the total volume of the radiator fan 100 remains unchanged. Figure 4 In the present embodiment, the first blade 2 is configured to rotate counterclockwise, and correspondingly, the second blade 3 is configured to rotate clockwise. Of course, in other embodiments, the first blade 2 may also be configured to rotate counterclockwise, and correspondingly, the second blade 3 is configured to rotate counterclockwise. That is, the rotation directions of the first blade 2 and the second blade 3 are configured in opposite directions. With such a configuration, under the flow-aiding effect of the second blade 3, more air can directly contact the working surface a of the first blade 2, thereby increasing the air output of the first blade 2, and then accelerating the air flow rate between the heat dissipation fins, thereby improving the heat dissipation efficiency.

[0046] Optionally, see Figures 6 to 9In the present embodiment, the first blade 2 and the second blade 3 may both be forward-swept wings. That is, the blade airfoil bends forward along the direction of fan rotation. And the bending direction of the first blade 2 is opposite to the bending direction of the second blade 3. Of course, in other embodiments, the first blade 2 and the second blade 3 may both be backward-swept wings. That is, the blade airfoil bends backward along the direction of fan rotation. And the bending direction of the first blade 2 is opposite to the bending direction of the second blade 3. That is, it is only necessary that the airfoil of the first blade 2 and the second blade 3 is the same, and it is ensured that the bending direction of the first blade 2 is opposite to the bending direction of the second blade 3.

[0047] It can be understood that in other embodiments, one of the first blade 2 and the second blade 3 is a forward-swept wing, and the other is a backward-swept wing, and the bending directions of the two are the same.

[0048] In order to make the assembly of the radiator fan 100 more compact and reasonable, optionally, please refer to FIG. Figure 6 and Figure 8 In this embodiment, the non-driving end face f of the hub 4 of the first blade 2 faces the cooling fins, and the non-driving end of the hub 4 of the second blade 3 faces away from the cooling fins.

[0049] Optionally, see Figure 4 , Fig.10 and Fig.11 In this embodiment, the mounting frame 1 includes an outer frame 11 and a mounting frame 12, wherein the mounting frame 12 is coaxially arranged with the outer frame 11, and the outer frame 11 and the mounting frame 12 are connected by a connecting rib 13, and the first blade 2 and the second blade 3 are both rotatably arranged on the mounting frame 12. Specifically, the first blade 2 is rotatably arranged at one end of the mounting frame 12 facing the heat dissipation fins; the second blade 3 is rotatably arranged at one end of the mounting frame 12 facing away from the heat dissipation fins. Further, the radiator fan 100 also includes a driving member (not shown in the figure) arranged in the mounting frame 1, whose output end is transmission-connected with the first blade 2 and the second blade 3, and is used to drive the first blade 2 and the second blade 3 to rotate. Optionally, the driving member is two motors arranged on the mounting frame 12. Of course, the driving member can also be a dual-axis motor with dual output shafts and reverse rotation arranged on the mounting frame 12, and no specific limitation is made here.

[0050] Optionally, see Fig.10In the present embodiment, the outer cross-section of the outer frame 11 of the mounting frame 1 is square as a whole, and the four corner regions of the outer frame 11 are axially provided with assembly holes c for assembling the mounting frame 1 on the heat sink fins, and a concave-convex structure d is provided around the assembly hole c for facilitating docking with the heat sink fins. That is, when the mounting frame 1 and the heat sink fins are assembled, quick docking is achieved through the concave-convex structure d of the outer frame 11 and the corresponding concave-convex structure d on the heat sink fins, and then fixed connection is achieved through fasteners and assembly holes c. Of course, in other embodiments, the outer cross-section of the outer frame 11 of the mounting frame 1 is circular as a whole, or other shapes. And the outer frame 11 of the mounting frame 1 can also be assembled with the heat sink fins by snap-on or other connection methods, which is not specifically limited here. In order to reduce the material used in the heat sink fan and reduce the production cost, optionally, please refer to Fig.10 In this embodiment, weight-reducing grooves e are formed at four corner regions of the outer frame 11, and the circumference of each weight-reducing groove e is located on the same circular circumference.

[0051] On the other hand, the embodiment of the utility model provides a radiator (not shown in the figure), including a base (not shown in the figure), a heat pipe (not shown in the figure), a heat dissipation fin (not shown in the figure), and a fan; the base is connected to the surface of a heat source (not shown in the figure) in contact with each other, and is used to absorb the heat generated by the heat source; one end of the heat pipe is connected to the base, and the other end is connected to the heat dissipation fin, and is used to transfer the heat generated by the heat source from the base to the heat dissipation fin; wherein the fan is the radiator fan 100 as described above, and the air outlet end of the radiator fan 100 is assembled and connected to the heat dissipation fin, and is used to accelerate the heat dissipation of the heat dissipation fin. Since the radiator has all the structures and connection relationships of the radiator fan 100, it has all the advantages of the radiator fan 100, so it will not be repeated here.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A radiator fan, characterized in that: include: A mounting frame (1) having an air inlet end away from the heat sink fins and an air outlet end close to the heat sink fins; A first fan blade (2) is rotatably disposed at the air outlet end of the mounting frame (1), with a working surface (a) facing the heat dissipation fins; A second fan blade (3) is rotatably disposed at the air inlet end of the mounting frame (1), with a working surface (a) facing the heat dissipation fins; The first fan blade (2) and the second fan blade (3) are coaxially arranged and have the same air outlet direction (b), and the axial dimension of the first fan blade (2) is greater than the axial dimension of the second fan blade (3).

2. The radiator fan according to claim 1, characterized in that: The first fan blade (2) and the second fan blade (3) rotate in opposite directions.

3. The radiator fan according to claim 2, characterized in that: The first blade (2) and the second blade (3) have the same blade airfoil profile.

4. The radiator fan according to claim 2, characterized in that: The first blade (2) and the second blade (3) have different blade airfoil profiles.

5. The radiator fan according to claim 2, characterized in that: The non-driving end surface (f) of the hub (4) of the first blade (2) faces the heat dissipation fins, and the non-driving end of the hub (4) of the second blade (3) faces away from the heat dissipation fins.

6. The radiator fan according to claim 1, wherein: The mounting frame (1) comprises an outer frame (11) and a mounting frame (12) coaxially arranged with the outer frame (11); the outer frame (11) and the mounting frame (12) are connected via a connecting rib (13); and the first fan blade (2) and the second fan blade (3) are both rotatably arranged on the mounting frame (12).

7. The radiator fan according to claim 6, characterized in that: Four corner regions of the outer frame (11) are axially provided with assembly holes (c) for assembling the mounting frame (1) on the heat dissipation fins.

8. The radiator fan according to claim 1, wherein: It also includes a driving member which is arranged in the installation frame (1) and has an output end which is drivingly connected to the first fan blade (2) and the second fan blade (3) and is used to drive the first fan blade (2) and the second fan blade (3) to rotate.

9. A radiator, comprising: Base, heat pipes, cooling fins, and fans; The base is in contact with the surface of the heat source and is used to absorb the heat generated by the heat source; One end of the heat pipe is connected to the base, and the other end is connected to the cooling fins, so as to transfer the heat generated by the heat source from the base to the cooling fins; the fan is a radiator fan as described in any one of claims 1 to 8, and the air outlet end of the radiator fan is assembled and connected to the cooling fins, so as to accelerate the heat dissipation of the cooling fins.

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