Fan module and heat dissipation device comprising same

Abstract

The utility model provides a fan module and a heat dissipation device comprising the same. The fan module comprises a frame body, an impeller and a first opening. The frame is provided with an air inlet and an air outlet. The frame body is provided with a first side wall. The impeller is connected with the frame. The impeller comprises a rotating shaft and a plurality of fan blades. The rotating shaft is provided with an upper extending line and a lower extending line, the upper extending line extends to pass through the air inlet, and the lower extending line extends to pass through the air outlet. The fan blades are connected with the rotating shaft and provided with upper edges and lower edges. The upper edge is close to the air inlet and the lower edge is close to the air outlet. The first opening is arranged on the first side wall of the frame body. The first top of the first opening is close to the air inlet, and the first bottom of the first opening is close to the air outlet. A first bottom width of the first opening is greater than a first top width of the first opening.

Description

Technical Field

[0001] The utility model relates to a fan module and a heat dissipation device comprising the same, in particular to a fan module comprising an opening and a heat dissipation device comprising the fan module. Background Art

[0002] As vehicles move toward electrification and autonomous driving, the application of automotive electronic components and electronic control units (ECUs) has increased, resulting in a corresponding increase in the overall heat generation of electronic components and electronic control units.

[0003] However, as vehicles also need to be lightweight, quiet, and energy-efficient, it is difficult for a heat dissipation device including a fan module installed in a vehicle to achieve effective heat dissipation, reduce energy consumption, and / or reduce noise while reducing volume and weight, which puts current heat dissipation devices under test.

[0004] Therefore, although the existing fan modules and heat dissipation devices including fan modules have gradually met their intended uses, they still do not fully meet the requirements in all aspects. Therefore, there are still some problems to be overcome regarding fan modules and heat dissipation devices including fan modules. Utility Model Content

[0005] The purpose of the present invention is to provide a fan module and a heat dissipation device including the same, so as to solve at least one of the above problems.

[0006] In view of the above problems, the utility model provides a fan module including a first opening, so as to achieve the effect of effective heat dissipation, reduced energy consumption and / or reduced noise by setting the first opening on the frame of the fan module. For example, since the first opening is set on the first side wall of the frame, the airflow design of the fan module can be improved. Further, since the first top of the first opening is close to the air inlet, the first bottom of the first opening is close to the air outlet. The first bottom width of the first opening can be greater than the first top width of the first opening. In addition, the first opening and the air outlet can be connected and together constitute a total air outlet. In this way, the utility model can further improve the airflow design in the fan module. Accordingly, the fan module and the heat dissipation device including the fan module of the utility model can effectively dissipate heat, reduce energy consumption and / or reduce noise.

[0007] In some embodiments, the utility model provides a fan module. The fan module includes a frame, an impeller and a first opening. The frame has an air inlet and an air outlet. The frame has a first side wall. The impeller is connected to the frame. The impeller includes a rotating shaft and a plurality of blades. The rotating shaft has an upper extension line and a lower extension line, the upper extension line extends through the air inlet, and the lower extension line extends through the air outlet. The plurality of blades are connected to the rotating shaft and have an upper edge and a lower edge. The upper edge is close to the air inlet, and the lower edge is close to the air outlet. The first opening is arranged on the first side wall of the frame. The first top of the first opening is close to the air inlet, and the first bottom of the first opening is close to the air outlet. The first bottom width of the first opening is greater than the first top width of the first opening. In addition, the first opening and the air outlet can be connected and together constitute a total air outlet.

[0008] According to one embodiment of the present invention, the first opening is located between the lower edge of the plurality of fan blades and the air outlet.

[0009] According to one embodiment of the utility model, the frame has a second side wall, and the fan module also includes: a second opening, which is arranged on the first side wall or the second side wall of the frame, and a second top of the second opening is close to the air inlet, and a second bottom of the second opening is close to the air outlet.

[0010] According to one embodiment of the present invention, the first opening and the second opening have different sizes or shapes.

[0011] According to one embodiment of the present invention, the shape of the first opening is irregular, curved or polygonal.

[0012] According to one embodiment of the present invention, a center of the first bottom width of the first opening is spaced a distance from a center of a first sidewall width of the first sidewall.

[0013] According to one embodiment of the present invention, the impeller further comprises: a base on which the impeller is disposed; and a plurality of ribs through which the base is connected to the frame.

[0014] According to one embodiment of the present invention, the first opening is connected to the air outlet and together form a main air outlet.

[0015] In some embodiments, the utility model provides a heat dissipation device. The heat dissipation device includes a fan module and a heat sink. The heat sink includes a base and a plurality of fins. The fan module is arranged on the upper surface of the base. The plurality of fins are arranged on the upper surface of the base. The angle between the extension direction of at least one fin among the plurality of fins and the first side wall of the frame of the fan module is less than 90 degrees.

[0016] According to one embodiment of the present invention, the plurality of fins are arranged on the outer side of the first side wall of the fan module.

[0017] According to one embodiment of the present invention, the upper surface has a recessed portion.

[0018] The fan module and heat dissipation device of the present invention can be applied to various types of electronic devices. In order to make the components and advantages of the present invention more obvious and easy to understand, various embodiments are given below and described in detail with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] When with Figure 1 The present invention can be more fully understood from the following detailed description when read together. It is worth noting that, according to the standard practice of the industry, the components are not shown in equal proportions. In fact, for the sake of clarity, the size of each component can be arbitrarily enlarged or reduced.

[0020] Figure 1 A three-dimensional schematic diagram showing a fan module according to an embodiment of the present invention.

[0021] Figure 2 An exploded schematic diagram showing a fan module according to an embodiment of the present invention.

[0022] Figure 3 A schematic side view of a fan module according to an embodiment of the present invention is shown.

[0023] Figure 4 A schematic side view of a fan module according to an embodiment of the present invention is shown.

[0024] Figure 5 A schematic side view of a fan module according to an embodiment of the present invention is shown.

[0025] Figure 6 A schematic side view of a fan module according to an embodiment of the present invention is shown.

[0026] Figure 7 The three-dimensional schematic diagram shows the frame, base and ribs of the fan module according to the embodiment of the present invention.

[0027] Figure 8 The three-dimensional schematic diagram shows the frame, base and ribs of the fan module according to the embodiment of the present invention.

[0028] Fig. 9 The schematic top view shows the frame, base and ribs of the fan module according to the embodiment of the present invention.

[0029] Fig.10 The bottom view shows the frame, base and ribs of the fan module according to the embodiment of the present invention.

[0030] Fig.11 A three-dimensional schematic diagram showing a heat dissipation device according to an embodiment of the present invention.

[0031] Fig.12 An exploded schematic diagram showing a heat dissipation device according to an embodiment of the present invention.

[0032] The reference numerals are as follows:

[0033] 1: Heat dissipation device

[0034] 10: Fan module

[0035] 11: Frame

[0036] 111: The first outlet

[0037] 112: The second outlet

[0038] 113: first side wall

[0039] 113W: first side wall width

[0040] 113C, 13BC, 114C, 14BC, 15BC, 16BC, 17C: Center

[0041] 114: Second side wall

[0042] 114W: Second side wall width

[0043] 115: Third side wall

[0044] 116: Fourth side wall

[0045] 12: Impeller

[0046] 121: Shaft

[0047] 122,122a,122b,122c,122d,122e: fan blades

[0048] 122E1: Upper edge

[0049] 122E2,122aE2,122bE2,122cE2,122dE2,122eE2: Lower edge

[0050] 13: First Opening

[0051] 13B: First bottom

[0052] 13BW: First bottom width

[0053] 13H,14H,H:Height

[0054] 13T: First Top

[0055] 13TW: First top width

[0056] 14: Second opening

[0057] 14B: Second bottom

[0058] 14BW: Second bottom width

[0059] 14T: Second top

[0060] 14TW: Second top width

[0061] 15: The third opening

[0062] 15T: Third Top

[0063] 16: The fourth opening

[0064] 16T: 4th top

[0065] 17: Base

[0066] 18,18a,18b,18c,18d: Ribs

[0067] 20: Radiator

[0068] 21: Base

[0069] 21TS: Top surface

[0070] 211: concave part

[0071] 22,22a,22b1,22b2,22b3,22b4,22b5,22b6,22c,22d: fins

[0072] 23: Connectors

[0073] a1,a2,a3,a4,a5,a6,a7,a8,a9,a10,a11: Angle

[0074] d1,d2: distance

[0075] D1: First direction

[0076] D2: Second direction

[0077] D3: Third direction

[0078] D113, D18a, D18b, D18c, D18d, D22b1, D22b2, D22b6: Extension direction

[0079] H1: First Height

[0080] H2: Second Height

[0081] L1: Upper extension line

[0082] L2: Lower extension line

[0083] OP: Opening DETAILED DESCRIPTION

[0084] The fan module and the heat dissipation device of each embodiment of the utility model are described in detail below. It should be understood that the following description provides many different embodiments for implementing different ways of some embodiments of the utility model. The specific elements and arrangements described below are only for simple and clear description of some embodiments of the utility model. Of course, these are only used for example and not for limitation of the utility model. In addition, similar and / or corresponding element symbols may be used in different embodiments to indicate similar and / or corresponding elements to clearly describe the utility model. However, the use of these similar and / or corresponding element symbols is only for simple and clear description of some embodiments of the utility model, and does not represent any correlation between the different embodiments and / or structures discussed.

[0085] In addition, it should be understood that the ordinal numbers used in the specification and claims, such as "first", "second", etc., to modify the elements, are not intended to imply any previous ordinal numbers of the (or multiple) elements, nor do they represent the order of one element and another element, or the order of the manufacturing method. The use of multiple ordinal numbers is only used to make a component with a certain name clearly distinguishable from another component with the same name. The claims and the specification may not use the same words, for example, the first element in the specification may be the second element in the claims.

[0086] In some embodiments of the present invention, terms such as "connect", "interconnect", "bond", etc., unless otherwise defined, may refer to two structures being in direct contact, or may refer to two structures not being in direct contact, with another structure disposed between the two structures. Such terms may also include situations where both structures are movable or both structures are fixed.

[0087] In the present invention, the terms "substantially", "approximately", and "about" generally mean within 10%, within 5%, within 3%, within 2%, within 1%, or within 0.5% of a given value or range. The quantity given here is an approximate quantity, that is, in the absence of specific instructions for "about", "approximately", and "substantially", the meanings of "about", "approximately", and "substantially" may still be implied. The term "range is between a first value and a second value" means that the range includes the first value, the second value, and other values ​​therebetween. Furthermore, there may be a certain error between any two values ​​or directions used for comparison.

[0088] In the present invention, each direction is not limited to three axes of a rectangular coordinate system such as the X-axis, the Y-axis, and the Z-axis, and can be interpreted in a broader sense. For example, the X-axis, the Y-axis, and the Z-axis may be perpendicular to each other, or may represent different directions that are not perpendicular to each other, but are not limited thereto. For ease of explanation, in the following, the X-axis direction is the first direction D1, the Y-axis direction is the second direction D2, and the Z-axis direction is the third direction D3 (height / thickness direction). In some embodiments, the bottom view schematic diagram is a view of the plane formed by the first direction D1 and the second direction D2 observed along the third direction D3, and the top view schematic diagram is a view of the plane formed by the first direction D1 and the second direction D2 observed along the direction opposite to the third direction D3.

[0089] Certain words are used throughout the specification and claims of this utility model to refer to specific components. It should be understood by those skilled in the art that electronic device manufacturers may refer to the same components by different names. This document does not intend to distinguish between components that have the same function but different names. In the following specification and claims, words such as "comprise", "contain", and "have" are open-ended words, so they should be interpreted as "including but not limited to...". Therefore, when the terms "comprise", "contain" and / or "have" are used in the description of the utility model, they specify the existence of corresponding parts, areas, steps, operations and / or elements, but do not exclude the existence of one or more corresponding parts, areas, steps, operations and / or elements.

[0090] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meanings as commonly understood by those skilled in the art. It is understood that these terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning consistent with the background or context of the relevant technology and the present invention, and should not be interpreted in an idealized or overly formal manner unless specifically defined in the embodiments of the present invention.

[0091] It should be understood that the following embodiments may replace, reorganize, or combine components in different embodiments to complete other embodiments without departing from the spirit of the present invention. Components between embodiments may be used in any combination as long as they do not violate the spirit of the present invention or conflict with each other.

[0092] Reference Figure 1 and Figure 2 , which respectively show a three-dimensional schematic diagram and an exploded schematic diagram of the fan module 10 of an embodiment of the present utility model. Figure 1 and Figure 2 As shown, in some embodiments, the fan module 10 may include a frame 11 , an impeller 12 , and an opening OP.

[0093] like Figure 1 and Figure 2 As shown, in some embodiments, the frame 11 may have a first air outlet 111 and a second air outlet 112. In some embodiments, the first air outlet 111 and the second air outlet 112 may be arranged along the third direction D3. In some embodiments, the first air outlet 111 and the second air outlet 112 may be arranged relative to each other to form a flow channel for gas to flow through. In some embodiments, depending on the shape of the impeller 12, the first air outlet 111 may be used as an air inlet, and the second air outlet 112 may be used as an air outlet, but the utility model is not limited thereto. In some embodiments, in a top view, the shape of the frame 11 may be a rectangle, a polygon, an arc, a combination thereof, or other similar shapes. In some embodiments, the frame 11 may have a plurality of side walls to form a housing space for accommodating the impeller 12. For example, the frame 11 may have 3, 4, 5, 6, 7, 8, 9, 10 or more side walls, but the utility model is not limited thereto.

[0094] In the following description, the frame body 11 is in a rectangular shape and has four side walls as an example, but the present invention is not limited thereto.

[0095] like Figure 1 and Figure 2 As shown, in some embodiments, the frame 11 may have a first side wall 113, a second side wall 114, a third side wall 115, and a fourth side wall 116 to form an accommodation space for accommodating the impeller 12. In some embodiments, the first side wall 113 and the third side wall 115 may be opposite to each other in the second direction D2, and the second side wall 114 and the fourth side wall 116 may be opposite to each other in the first direction D1. In some embodiments, the first side wall 113 may be disposed between the second side wall 114 and the fourth side wall 116, and the second side wall 114 may be disposed between the first side wall 113 and the third side wall 115.

[0096] like Figure 1 and Figure 2As shown, in some embodiments, the impeller 12 may be connected to the frame 11. In some embodiments, the impeller 12 may be sleeved on the frame 11. In some embodiments, the impeller 12 may include a rotating shaft 121 and a plurality of blades 122.

[0097] like Figure 1 and Figure 2 As shown, in some embodiments, the rotating shaft 121 may have an upper extension line L1 and a lower extension line L2. In some embodiments, the upper extension line L1 and the lower extension line L2 may be virtual extension lines, wherein the upper extension line L1 may extend through the first air outlet 111, and the lower extension line L2 may extend through the second air outlet 112. In this document, the "upper extension line L1" may be defined as the axis of the rotating shaft 121 extending along the third direction D3, and the "lower extension line L2" may be defined as the axis of the rotating shaft 121 extending in the direction opposite to the third direction D3.

[0098] like Figure 1 and Figure 2 As shown, in some embodiments, a plurality of blades 122 may be connected to the rotating shaft 121. In some embodiments, the number of blades 122 may be a positive integer greater than or equal to 2. For example, the number of blades 122 may be 2, 3, 4, 5, 6, 7, 8, 9, 10 or more. In the following, the number of blades 122 is 5 as an example for explanation, but the utility model is not limited to this. In some embodiments, a plurality of blades 122 may include blades 122a, 122b, 122c, 122d and 122e arranged in a counterclockwise direction. In some embodiments, the spacing between each blade in the plurality of blades 122 may be equidistant or unequally spaced. In some embodiments, a plurality of blades 122 may be bionic blades to improve the efficiency of the blades 122 and reduce the noise emitted when the blades 122 rotate. Accordingly, the fan module 10 of the utility model can effectively dissipate heat, reduce energy consumption and / or reduce noise.

[0099] like Figure 1 and Figure 2 As shown, in some embodiments, in the third direction D3, the plurality of blades 122 may have an upper edge 122E1 and a lower edge 122E2. In some embodiments, the upper edge 122E1 may be close to the first air outlet 111, and the lower edge 122E2 may be close to the second air outlet 112. In this document, the "upper edge 122E1" may be defined as the edge of the plurality of blades 122 that is closest to the first air outlet 111 and farthest from the second air outlet 112, and the "lower edge 122E2" may be defined as the edge of the plurality of blades 122 that is closest to the second air outlet 112 and farthest from the first air outlet 111. Therefore, the range of rotation of the plurality of blades 122 may be defined by the upper edge 122E1 and the lower edge 122E2 of the plurality of blades 122.

[0100] like Figure 1 and Figure 2 As shown, in some embodiments, the number of openings OP in the fan module 10 may be a positive integer equal to or greater than 1. For example, the number of openings OP in the fan module 10 may be 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 or more. Accordingly, compared to not setting an opening on the frame 11, since the opening OP of the utility model is set on the side wall of the frame 11, the fan module 10 of the utility model can effectively dissipate heat, reduce energy consumption and / or reduce noise. For example, the opening OP of the utility model can avoid the problem of pressure relief during operation of the fan module 10, thereby maintaining the wind pressure of the fan module 10 and increasing the air volume. When the same air volume is achieved, the fan module 10 of the utility model can effectively dissipate heat, reduce energy consumption and / or reduce noise.

[0101] like Figure 1 and Figure 2 As shown, in some embodiments, when the fan module 10 includes a plurality of openings OP, one of the plurality of openings OP may have the same or different sizes or shapes as another. Accordingly, when the size or shape of at least one opening OP in the fan module 10 is different from that of at least another opening OP, the fan module 10 can further reduce energy consumption and / or reduce noise.

[0102] In some embodiments, at least one of the multiple side walls of the frame body 11 is provided with one or more openings OP. In some embodiments, each of the multiple side walls of the frame body 11 is provided with one or more openings OP. In some embodiments, the number of openings OP provided on one side wall of the frame body 11 may be the same as or different from the number of openings OP provided on another side wall of the frame body 11. In some embodiments, some of the multiple side walls of the frame body 11 are provided with one or more openings OP, and other of the multiple side walls of the frame body 11 are not provided with openings OP.

[0103] In the following description, an example is taken in which the fan module 10 includes four openings OP, and the four openings OP are respectively disposed on four side walls, but the present invention is not limited thereto.

[0104] like Figure 1 and Figure 2 As shown, in some embodiments, the opening OP of the fan module 10 may include a first opening 13. In some embodiments, the first opening 13 may be disposed at the bottom of the first side wall 113 of the frame 11. In some embodiments, the first top 13T of the first opening 13 may be close to the first air outlet 111, and the first bottom 13B of the first opening 13 may be close to the second air outlet 112. In some embodiments, the first opening 13, the first air outlet 111, and the second air outlet 112 may be fluidically connected to each other. Furthermore, the first opening 13 may be connected to the second air outlet 112 and together constitute a total air outlet.

[0105] like Figure 1 and Figure 2 As shown, in some embodiments, in the first direction D1, the first top 13T may have a first top width 13TW, and the first bottom 13B may have a first bottom width 13BW. In some embodiments, the first bottom width 13BW of the first bottom 13B of the first opening 13 may be greater than the first top width 13TW of the first top 13T of the first opening 13. In some embodiments, the first opening 13 may have a width that gradually decreases along the third direction D3. In some embodiments, the first opening 13 may have a shape that is narrow at the top and wide at the bottom. Accordingly, when the bottom width of at least one opening OP in the fan module 10 is greater than the top width, it is possible to avoid pressure relief, increase air volume, maintain the integrity of the flow channel, and further reduce energy consumption and / or noise of the fan module 10.

[0106] In some embodiments, the shape of the first opening 13 may be an irregular shape, a curved shape including a curve, a polygon, a combination thereof, or other similar shapes, but the present invention is not limited thereto. For example, in a side view, the shape of the upper surface of the first opening 13 may be an arc shape, an elliptical arc shape, a hill shape, a platform shape, a wave shape, a combination thereof, or other similar shapes, but the present invention is not limited thereto.

[0107] like Figure 1 and Figure 2 As shown, in some embodiments, the opening OP of the fan module 10 may also include a second opening 14. In some embodiments, the second opening 14 may be disposed on the second side wall 114 of the frame 11. In other embodiments, the second opening 14 may be disposed on the first side wall 113, the third side wall 115, or the fourth side wall 116 of the frame 11. In other words, the first opening 13 and the second opening 14 may be disposed on the same side wall of the frame 11, or on different side walls. In some embodiments, the first opening 13, the second opening 14, the first air outlet 111, and the second air outlet 112 may be fluidically connected to each other. In some embodiments, the second top 14T of the second opening 14 may be close to the first air outlet 111, and the second bottom 14B of the second opening 14 may be close to the second air outlet 112.

[0108] In some embodiments, the first opening 13 and the second opening 14 may have the same or different sizes or shapes. For example, the size may include area, height, width, other similar parameters or combinations thereof, but the present invention is not limited thereto. In other embodiments, the second opening 14 may be omitted.

[0109] like Figure 1 and Figure 2As shown, in some embodiments, the opening OP may further include a third opening 15. In some embodiments, the third opening 15 may be disposed on the third sidewall 115 of the frame body 11. In other embodiments, the third opening 15 may be disposed on the first sidewall 113, the second sidewall 114, or the fourth sidewall 116 of the frame body 11. In some embodiments, the opening OP may further include a fourth opening 16. In some embodiments, the fourth opening 16 may be disposed on the fourth sidewall 116 of the frame body 11. In other embodiments, the fourth opening 16 may be disposed on the first sidewall 113, the second sidewall 114, or the third sidewall 115 of the frame body 11.

[0110] Reference Figure 3 , showing a side view schematic diagram of a fan module 10 according to an embodiment of the present utility model. Figure 3 As shown, in some embodiments, in the first direction D1, the first side wall 113 may have a first side wall width 113W. In some embodiments, in the first direction D1, the center 13BC of the first bottom width 13BW of the first opening 13 is spaced a distance d1 from the center 113C of the first side wall width 113W of the first side wall 113. In this document, the "center" of the "bottom width" may be defined as half of the bottom width, and the "center" of the "side wall width" may be defined as half of the side wall width. In other words, in the first direction D1, the center 13BC of the first bottom width 13BW does not overlap with the center 113C of the first side wall width 113W, so that the center 13BC of the first bottom width 13BW will not be located at half of the first side wall width 113W. Accordingly, when the center of the bottom width of at least one opening OP in the fan module 10 is spaced a distance from the center of the side wall on which the opening is disposed, the fan module 10 can reduce energy consumption and / or reduce noise.

[0111] like Figure 3 As shown, in some embodiments, in the third direction D3, the first sidewall 113 may have a height H, and the first opening 13 may have a height 13H. In some embodiments, the height 13H may be less than or equal to one-half of the height H. In some embodiments, the ratio of the height 13H to the height H (height 13H / height H) may be less than or equal to 0.5. For example, the ratio of the height 13H to the height H may be 0.5, 0.45, 0.4, 0.35, 0.3, 0.25, 0.2, 0.15, 0.1, or any value between the aforementioned values ​​or a numerical range consisting of any values, but the utility model is not limited thereto.

[0112] like Figure 3As shown, in some embodiments, in the side view, the area of ​​the first opening 13 may be less than or equal to one third of the area of ​​the first sidewall 113. In some embodiments, in the side view, the product of the first bottom width 13BW and the height 13H (first bottom width 13BW x height 13H) may be less than or equal to one third of the product of the first sidewall width 113W and the height H (first sidewall width 113W x height H). For example, the ratio of the product of the first bottom width 13BW and the height 13H to the product of the first sidewall width 113W and the height H ((first bottom width 13BW x height 13H) / (first sidewall width 113W x height H)) may be 0.33, 0.3, 0.25, 0.2, 0.15, 0.1, or any value between the aforementioned values ​​or a numerical range consisting of any values, but the utility model is not limited thereto. Accordingly, by adjusting the relative relationship between the first opening 13 and the first side wall 113 , the problem of the opening being too small or too large, which results in the inability to effectively maintain the wind pressure, is avoided, thereby increasing the wind volume.

[0113] like Figure 3 As shown, in some embodiments, the first opening 13 may be located between the lower edge 122E2 of the plurality of blades 122 and the second air outlet 112. In some embodiments, in the side view, the first opening 13 may not expose the plurality of blades 122. In some embodiments, in the third direction D3, the first top 13T of the first opening 13 may be lower than the lower edge 122aE2 of the blade 122a and the lower edge 122bE2 of the blade 122b. Accordingly, when the opening in the fan module 10 is below the lower edge of the blade, it is possible to avoid pressure relief, increase air volume, maintain the integrity of the flow channel, and further reduce energy consumption and / or noise of the fan module 10.

[0114] In some embodiments, the shape of the first opening 13 may be substantially bilaterally symmetrical with respect to a symmetry axis parallel to the third direction D3. For example, the shape of the left half of the first opening 13 may be substantially symmetrical with the shape of the right half of the first opening 13.

[0115] Hereinafter, the second opening 14 , the third opening 15 and / or the fourth opening 16 may be the same as or similar to the first opening 13 , and thus similar definitions or descriptions may be omitted.

[0116] Reference Figure 4 , showing a side view schematic diagram of a fan module 10 according to an embodiment of the present utility model. Figure 4As shown, in some embodiments, in the second direction D2, the second top 14T may have a second top width 14TW, and the second bottom 14B may have a second bottom width 14BW. In some embodiments, the second bottom width 14BW of the second bottom 14B of the second opening 14 may be greater than the second top width 14TW of the second top 14T of the second opening 14. In some embodiments, the second opening 14 may have a width that gradually decreases along the third direction D3. In some embodiments, the second opening 14 may have a shape that is narrow at the top and wide at the bottom. Accordingly, when the bottom width of at least two openings OP in the fan module 10 is greater than the top width, it is possible to avoid pressure relief, increase air volume, maintain the integrity of the flow channel, and further reduce energy consumption and / or noise of the fan module 10.

[0117] like Figure 4 As shown, in some embodiments, in the second direction D2, the center 14BC of the second bottom width 14BW of the second opening 14 is spaced from the center 114C of the second sidewall width 114W of the second sidewall 114 by a distance d2. In other words, in the second direction D2, the center 14BC of the second bottom width 14BW does not overlap with the center 114C of the second sidewall width 114W, so that the center 14BC of the second bottom width 14BW will not be located at half of the second sidewall width 114W. In some embodiments, the distance d2 may be the same as or different from the distance d1. For example, the distance d2 may be smaller than the distance d1. Accordingly, when the center of the bottom width of at least two openings in the fan module 10 is spaced from the center of the sidewall on which the opening is disposed by different distances, the fan module 10 can be further reduced in noise.

[0118] like Figure 4 As shown, in some embodiments, in the third direction D3, the second side wall 114 may have a height H, and the second opening 14 may have a height 14H. In some embodiments, the height 14H may be less than or equal to one-half of the height H. In some embodiments, the ratio of the height 14H to the height H (height 14H / height H) may be less than or equal to 0.5. In some embodiments, in a side view, the area of ​​the second opening 14 may be less than or equal to one-third of the area of ​​the second side wall 114. In some embodiments, in a side view, the product of the second bottom width 14BW and the height 14H (second bottom width 14BW x height 14H) may be less than or equal to one-third of the product of the second side wall width 114W and the height H (second side wall width 114W x height H). Accordingly, by adjusting the relative relationship between the second opening 14 and the second side wall 114, the problem of being unable to effectively maintain wind pressure due to the opening being too small or too large, thereby increasing the wind volume, is avoided.

[0119] like Figure 4As shown, in some embodiments, in the third direction D3, the second top 14T of the second opening 14 may be lower than the lower edge 122bE2 of the blade 122b and the lower edge 122cE2 of the blade 122c. Accordingly, when the opening in the fan module 10 is below the lower edge of the blade, it is possible to avoid pressure relief, increase air volume, maintain the integrity of the flow channel, and further reduce energy consumption and / or noise of the fan module 10.

[0120] In some embodiments, the shape of the second opening 14 may be substantially asymmetrical with respect to the axis of symmetry parallel to the third direction D3. For example, the shape of the left half of the second opening 14 may be substantially asymmetrical with the shape of the right half of the second opening 14. Accordingly, when the shape of at least one opening in the fan module 10 is asymmetrical, the fan module 10 can be further reduced in noise. For example, the shape of the opening may be adjusted as required to reduce noise of a specific frequency.

[0121] Reference Figure 5 , showing a side view schematic diagram of a fan module 10 according to an embodiment of the present utility model. Figure 5 As shown, in some embodiments, in the third direction D3, the third top 15T of the third opening 15 may be lower than the lower edge 122cE2 of the blade 122c and the lower edge 122dE2 of the blade 122d. In some embodiments, the shape of the third opening 15 may be substantially asymmetrical. Accordingly, when the shapes of at least two openings in the fan module 10 are asymmetrical, the fan module 10 can be further noise-reduced. In other embodiments, the third opening 15 may be omitted.

[0122] Reference Figure 6 , showing a side view schematic diagram of a fan module 10 according to an embodiment of the present utility model. Figure 6 As shown, in some embodiments, in the third direction D3, the fourth top 16T of the fourth opening 16 may be lower than the lower edge 122eE2 of the blade 122e. In some embodiments, the shape of the fourth opening 16 may be substantially asymmetrical. Accordingly, when the shapes of at least three openings in the fan module 10 are asymmetrical, the fan module 10 can be further noise-reduced. In other embodiments, the fourth opening 16 may be omitted.

[0123] For the sake of explanation, the following Figures 7 to 10 The impeller 12 in the fan module 10 is omitted.

[0124] Reference Figure 7 and Figure 8 , which respectively show the three-dimensional schematic diagrams of the frame 11, the base 17 and the ribs 18 of the fan module 10 of the embodiment of the utility model. Figure 7As shown, in some embodiments, the fan module 10 may further include a base 17 and a plurality of ribs 18. In some embodiments, the impeller 12 may be disposed on the base 17 to support the impeller 12 through the base 17. In some embodiments, the base 17 may have a center 17C, and the center 17C may correspond to the axis of the impeller 12. For example, when the base 17 may substantially have a disc shape, the center 17C may be the center of the base 17.

[0125] In some embodiments, the base 17 may be connected to the frame 11 via a plurality of ribs 18. In some embodiments, the number of ribs 18 may be a positive integer greater than 2. For example, the number of ribs 18 may be 2, 3, 4, 5, 6, 7, 8, 9, 10 or more. In the following, the number of ribs 18 is 4 as an example for explanation, but the utility model is not limited thereto. In some embodiments, the ribs 18 may be arranged corresponding to the opening OP. For example, the ribs 18 may be arranged at the frame 11 where the opening OP is not arranged. In other words, the opening OP may not expose the ribs 18.

[0126] like Figure 7 As shown, in some embodiments, the angle a1 between the virtual connecting line between the center 13BC of the first opening 13 and the center 17C of the base 17 and the virtual connecting line between the center 14BC of the second opening 14 and the center 17C of the base 17 may not be equal to 90 degrees. In some embodiments, the angle a2 between the virtual connecting line between the center 14BC of the second opening 14 and the center 17C of the base 17 and the virtual connecting line between the center 15BC of the third opening 15 and the center 17C of the base 17 may not be equal to 90 degrees. In some embodiments, the angle a3 between the virtual connecting line between the center 15BC of the third opening 15 and the center 17C of the base 17 and the virtual connecting line between the center 16BC of the fourth opening 16 and the center 17C of the base 17 may not be equal to 90 degrees. In some embodiments, the angle a4 between the virtual connecting line between the center 16BC of the fourth opening 16 and the center 17C of the base 17 and the virtual connecting line between the center 13BC of the first opening 13 and the center 17C of the base 17 may not be equal to 90 degrees. In some embodiments, at least one of the angles a1, a2, a3, and a4 may not be equal to 90 degrees. In other words, at least one of the angles a1, a2, a3, and a4 may be less than 90 degrees, and at least another of the angles a1, a2, a3, and a4 may be greater than 90 degrees. Accordingly, when the plurality of openings in the fan module 10 are asymmetric (e.g., eccentric) to each other, the fan module 10 can be further noise-reduced.

[0127] Reference Fig. 9 and Fig.10, which respectively show a schematic top view and a schematic bottom view of the frame 11, the base 17 and the rib 18 of the fan module of an embodiment of the utility model. In some embodiments, in the top view, the plurality of ribs 18 may include ribs 18a, 18b, 18c and 18d arranged in a counterclockwise direction. In some embodiments, the angle a5 between the extension direction D18a of the rib 18a and the extension direction D18b of the rib 18b; the angle a6 between the extension direction D18b of the rib 18b and the extension direction D18c of the rib 18c; the angle a7 between the extension direction D18c of the rib 18c and the extension direction D18d of the rib 18d; or the angle a8 between the extension direction D18d of the rib 18d and the extension direction D18a of the rib 18a may not be equal to 90 degrees.

[0128] In the following, the same or similar element numbers and descriptions are omitted.

[0129] Reference Fig.11 and Fig.12 , which shows a three-dimensional schematic diagram and an exploded schematic diagram of the heat dissipation device 1 of an embodiment of the utility model. Fig.11 and Fig.12 As shown, in some embodiments, the heat dissipation device 1 may include a fan module 10 and a heat sink 20. In some embodiments, the heat sink 20 may include a base 21 and a plurality of fins 22. In some embodiments, the fan module 10 may be disposed on the upper surface 21TS of the base 21.

[0130] In some embodiments, the upper surface 21TS of the base 21 may have a recess 211. In some embodiments, the recess 211 of the base 21 may be replaced by a cavity, a concave platform, a groove, the like, or a combination thereof. Since the recess 211 can increase the contact area between the wind flowing through the fan module 10 and the fins 22, the recess 211 can provide a passive heat dissipation effect. In some embodiments, an external heat source (not shown) may be disposed outside the recess 211 of the base 21. In some embodiments, in the third direction D3, the first height H1 of the base 21 may be greater than the second height H2 of the base 21 where the recess 211 is disposed, thereby facilitating the stacking of the fins 22 and increasing the total area of ​​the fins 22 disposed on the base 21. Accordingly, the recess 211 of the base 21 can improve the heat dissipation uniformity of the fan module 10 and / or further reduce the noise of the fan module 10. In some other embodiments, in the third direction D3, the first height H1 of the base 21 may be substantially equal to the second height H2 of the base 21 where the recess 211 is disposed. In other words, the base 21 may have a substantially uniform height. Therefore, the flexibility of disposing the base 21 may be improved. For example, an external element may be disposed below the base 21 where the recess 211 is disposed.

[0131] In some embodiments, a plurality of fins 22 may be disposed on the upper surface 21TS of the base 21. In some embodiments, a plurality of fins 22 may be disposed on the outside of the first side wall 113 of the fan module 10. In some embodiments, in the third direction D3, the fan module 10 and the fins 22 do not overlap. In some embodiments, the projection of the plurality of fins 22 on the base 21 may surround the projection of the fan module 10 on the base. In some embodiments, the projection area of ​​the plurality of fins 22 on the base 21 does not overlap with the projection area of ​​the fan module 10 on the base. In some embodiments, no fins 22 are disposed under the fan module 10. Accordingly, the fins 22 may enhance the flow guiding effect and / or heat dissipation efficiency of the fan module 10, and may further reduce the noise of the fan module 10.

[0132] In some embodiments, the angle a9 between the extension direction of at least one of the plurality of fins 22 and the extension direction D113 of the first side wall 113 of the frame 11 may be less than 90 degrees. In this document, the "extension direction" may be defined as the extension direction of a plane. In some embodiments, the plurality of fins 22 may include fins 22a, 22b1, 22b2, 22b3, 22b4, 22b5, 22b6, 22c and 22d arranged in a counterclockwise direction, but the present invention is not limited thereto. In some embodiments, the fin 22a is disposed adjacent to the first side wall 113, the fins 22b1 to 22b6 are disposed adjacent to the second side wall 114, the fin 22c is disposed adjacent to the third side wall 115, and the fin 22d is disposed adjacent to the fourth side wall 116, but the present invention is not limited thereto.

[0133] In some embodiments, the angle a9 between the extension direction D22b1 of the fin 22b1 and the extension direction D113 of the first side wall 113 of the frame 11 may be less than 90 degrees. In some embodiments, the angle a10 between the extension direction D22b2 of the fin 22b2 and the extension direction D113 of the first side wall 113 of the frame 11 may be less than 90 degrees. In some embodiments, the angle a10 may be less than the angle a9. Accordingly, when the angle between at least one of the plurality of fins 22 and at least one side wall of the frame 11 is an acute angle, the contact area between the wind flowing through the fan module 10 and the fin 22 can be increased, the wind shear noise can be reduced, and the fan module 10 can be further reduced in noise.

[0134] In some embodiments, the fins 22a may be arranged parallel to each other, and the fins 22c may be arranged parallel to each other. In some embodiments, the angle a11 between the extension direction D22b1 of the fin 22b1 and the extension direction D22b6 of the fin 22b6 may be greater than 90 degrees and less than 180 degrees. For example, the angle a11 may be 91 degrees, 105 degrees, 120 degrees, 135 degrees, 150 degrees, 179 degrees or any numerical value between the aforementioned numerical values ​​or a numerical range composed of any numerical values, but the utility model is not limited thereto. In some embodiments, the fins 22b1 to fins 22b6 may be arranged in a fan shape. Accordingly, when the fins 22 disposed on at least one side wall adjacent to the frame 11 are arranged in a fan shape, the contact area between the wind flowing through the fan module 10 and the fins 22 can be increased, the wind shear noise can be reduced, and the fan module 10 can be further reduced in noise.

[0135] In some embodiments, the heat sink 20 may include a connector 23 disposed on the upper surface 21TS of the base 21. Therefore, the heat sink 1 may be connected to external elements through the connector 23. In some embodiments, the number of the connectors 23 may be 4, but the present invention is not limited thereto. In some embodiments, the connector 23 may include a convex portion, a concave portion, a tenon, a groove, a slot, a screw, a screw hole, the like, or a combination thereof, but the present invention is not limited thereto.

[0136] Accordingly, compared to the current fan module, which has problems of poor heat dissipation, excessive energy consumption and excessive noise regardless of whether it has an opening, the utility model sets a first opening on the first side wall of the frame and makes the first bottom width of the first opening larger than the first top width of the first opening, so that the fan module and the heat dissipation device including the fan module can effectively dissipate heat, reduce energy consumption and / or reduce noise.

[0137] Several embodiments are summarized above so that those skilled in the art can better understand the concepts of the embodiments of the present invention. Those skilled in the art should understand that they can design or modify other processes and structures based on the embodiments of the present invention to achieve the same purposes and / or advantages as the embodiments introduced herein. Those skilled in the art should also understand that such equivalent processes and structures do not deviate from the spirit and scope of the present invention, and they can make various changes, substitutions and replacements without violating the spirit and scope of the present invention.

Claims

1. A fan module, characterized in that: include: A frame body having an air inlet and an air outlet, and having a first side wall; An impeller connected to the frame, comprising: a rotating shaft having an upper extension line and a lower extension line, the upper extension line extending through the air inlet, and the lower extension line extending through the air outlet; and A plurality of fan blades connected to the rotating shaft, having an upper edge and a lower edge, the upper edge being close to the air inlet, and the lower edge being close to the air outlet; and a first opening, disposed on the first side wall of the frame, with a first top of the first opening close to the air inlet, and a first bottom of the first opening close to the air outlet, A first bottom width of the first opening is greater than a first top width of the first opening.

2. The fan module according to claim 1, characterized in that: The first opening is located between the lower edges of the plurality of fan blades and the air outlet.

3. The fan module according to claim 1, characterized in that: The frame has a second side wall, and the fan module further includes: A second opening is arranged on the first side wall or the second side wall of the frame, and a second top of the second opening is close to the air inlet, and a second bottom of the second opening is close to the air outlet.

4. The fan module according to claim 3, characterized in that: The first opening and the second opening have different sizes or shapes.

5. The fan module according to claim 1, wherein: The shape of the first opening is irregular, curved or polygonal.

6. The fan module according to claim 1, wherein: A center of the first bottom width of the first opening is spaced a distance from a center of a first sidewall width of the first sidewall.

7. The fan module according to claim 1, wherein: Also includes: a base, on which the impeller is disposed; as well as A plurality of ribs are provided, and the base is connected to the frame through the plurality of ribs.

8. The fan module according to claim 1, characterized in that: The first opening is connected to the air outlet and together form a main air outlet.

9. A heat dissipation device, characterized in that: include: The fan module according to any one of claims 1 to 8; as well as A radiator, comprising: A base, the fan module is arranged on an upper surface of the base; as well as A plurality of fins are disposed on the upper surface of the base, and an angle between an extension direction of at least one fin among the plurality of fins and the first side wall is less than 90 degrees.

10. The heat dissipation device according to claim 9, characterized in that: The plurality of fins are arranged on the outer side of the first side wall of the fan module.

11. The heat dissipation device according to claim 9, characterized in that: The upper surface has a recessed portion.

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