TWI619888B - Heat-dissipating fan device and volume adjustment method - Google Patents

Abstract

The present disclosure discloses a cooling fan device for use in a computer device, and the cooling fan device includes a fan unit, a resonant cavity, and a sounding unit. The resonant cavity is combined with the fan unit, and the sounding unit is integrated into the resonant cavity. The fan unit is used for air intake to dissipate heat from the computer device. The resonant cavity is configured to generate a standing wave according to the operation of the fan unit, and amplify the sound volume of the sounding unit according to the standing wave. The resonant cavity contains a Helmholtz resonant cavity.

Description

Cooling fan device and volume adjustment method

The present invention relates to a heat dissipating device and an adjusting method, and particularly relates to a cooling fan device and a volume adjusting method.

With the rapid development of heat dissipation technology, fan units are widely used in computer devices to dissipate heat for computer devices. For example, when the operating frequency of a computer device is increased according to performance requirements, the internal temperature of the computer device will be correspondingly increased. Therefore, in order to prevent the internal temperature of the computer device from affecting its operation, or even causing damage to the computer device, The fan unit is used to adjust the internal temperature of the computer device. However, at present, the design of the fan unit is still mainly based on the heat dissipation performance, and it is not considered how to reduce the operating noise of the fan unit. For example, when the fan unit operates in the high-speed mode, the fan unit has good heat dissipation effect but high operation noise. When the fan unit operates in the low-speed mode, the fan unit has poor heat dissipation performance but low operation noise.

Therefore, how to effectively maintain the heat dissipation performance of the fan unit and reduce the operating noise of the fan unit to design the cooling fan device and the volume adjustment method is a big challenge.

One aspect disclosed in the present disclosure relates to a cooling fan device applied to a computer device, and the cooling fan device includes a fan unit, a resonant cavity, and a sounding unit. The resonant cavity is integrated with the fan unit, and the sounding unit is integrated into the resonant cavity. The fan unit is used for air intake to dissipate heat from the computer device. The resonant cavity is configured to generate a standing wave according to the operation of the fan unit, and amplify the sound volume of the sounding unit according to the standing wave. The resonant cavity contains a Helmholtz resonant cavity.

Another aspect disclosed in the present disclosure relates to a volume adjustment method applied to a cooling fan device. The cooling fan device comprises a fan unit, a resonant cavity and a sounding unit, and the resonant cavity comprises a Helmholtz resonant cavity. The resonant cavity is combined with the fan unit, and the sounding unit is integrated into the resonant cavity. The volume adjustment method includes the steps of: generating a standing wave according to the operation of the fan unit through the resonant cavity; and amplifying the sound volume of the sounding unit according to the standing wave through the resonant cavity.

In summary, the technical solution of the present invention has obvious advantages and beneficial effects compared with the prior art. With the above technical solutions, considerable technological progress can be achieved, and the utility value is widely used. The cooling fan device and the volume adjustment method disclosed in the present invention can reduce or amplify the sound by using the Helmholtz resonant cavity. Therefore, the sound generated by the fan unit and the sounding unit is respectively reduced and enlarged. For example, when the sounding unit is not operating, the Helmholtz resonant cavity can be used to reduce the operating noise of the fan unit; when the sounding unit is operating, the Helmholtz resonant cavity can be used as a speaker component of the sounding unit and used to amplify the sound. The sound volume of the unit enhances the user's auditory experience quality. Therefore, the cooling fan device and the volume adjusting method disclosed in the present invention can not only effectively maintain the heat dissipation performance of the fan unit and reduce the operating noise of the fan unit, but also enhance the user's experience quality by amplifying the sound volume of the sounding unit.

The following is a detailed description of the embodiments in order to provide a better understanding of the scope of the present invention, but the embodiments are not intended to limit the scope of the disclosure, and the description of the structural operation is not limited. The order in which they are performed, any structure that is recombined by the elements, produces equal means of function, and is covered by the disclosure. In addition, according to industry standards and practices, the drawings are only for the purpose of assisting the description, and are not drawn according to the original size. In fact, the dimensions of the various features may be arbitrarily increased or decreased for convenience of explanation. In the following description, the same elements will be denoted by the same reference numerals for convenience of understanding.

The terms used in the entire specification and the scope of the patent application, unless otherwise specified, generally have the ordinary meaning of each term used in the field, the content disclosed herein, and the particular content. Certain terms used to describe the present disclosure are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in the description of the disclosure.

In addition, the terms "including", "including", "having", "containing", etc., which are used in this case are all open terms, meaning "including but not limited to".

In this case, when an element is referred to as "connected" or "coupled", it may mean "electrically connected" or "electrically coupled". "Connected" or "coupled" can also be used to indicate that two or more components operate or interact with each other.

FIG. 1A is a schematic structural view of a cooling fan device 100 according to an embodiment disclosed in the present disclosure. As shown in FIG. 1A, the cooling fan device 100 includes a fan unit 110, a resonant cavity 120, and a sounding unit 130. In this embodiment, the resonant cavity 120 can be combined with the fan unit 110, and the sounding unit 130 can be integrated on the top or side of the resonant cavity 120. For example, the cooling fan device 100 can be applied to a computer device, and the computer device can be a desktop computer, a notebook computer, a tablet computer, or any computer module that can be used to perform computing functions.

In one embodiment, the cooling fan device 100 further includes a ventilation cavity 140, and the ventilation cavity 140 is combined with the fan unit 110 and the resonant cavity 120. For example, the fan unit 110 is used for air intake to dissipate heat from the computer device and through the ventilation cavity 140 for air outlet. As shown in FIG. 1A, it can be seen from a partial cross-sectional view of the venting cavity 140 that the venting cavity 140 is a hollow cavity. Therefore, the fan unit 110 can pass through the hollow venting cavity 140 for air outlet. The resonant cavity 120 is configured to generate a standing wave according to the operation of the fan unit 110, and amplify the sound volume of the sounding unit 130 according to the standing wave, and the resonant cavity 120 is a Helmholtz resonant cavity. In another embodiment, the heat dissipation fan device 100 further includes a heat dissipation fin 150 , and the heat dissipation fins 150 are integrated into the air outlet of the ventilation cavity 140 to increase the heat dissipation area, so that the heat dissipation performance of the heat dissipation fan device 100 can be effectively improved.

In one embodiment, when the fan unit 110 passes through the ventilation chamber 140 to perform the air discharge, the resonant cavity 120 is configured to generate a standing wave according to the vibration energy of the air generated when the fan unit 110 is out of the air. In another embodiment, as shown in FIG. 1B, FIG. 1B is a schematic structural view of a cooling fan device 100 according to an embodiment disclosed in the present disclosure. The resonant cavity 120 includes a resonant film 160, and the resonant film 160 is used to introduce air vibration energy generated when the fan unit 110 is out of the air into the resonant cavity 120. In this way, the resonant cavity 120 can generate standing waves according to the vibration energy of the air. In this embodiment, the resonant cavity 120 may be a rigid body structure except for the resonant film 160. For example, the resonant cavity 120 may be made of a metal material, a ceramic material, a plastic material, a wood material, or any solid material that neglects significant deformation. Further, the resonance film 160 may be composed of a pulp diaphragm, a plastic diaphragm, a metal diaphragm or a synthetic fiber diaphragm or any diaphragm that can transmit air vibration energy.

In another embodiment, the resonant cavity 120 is configured to amplify the sound volume of the corresponding frequency segment of the sounding unit 130 according to the frequency of the standing wave. For example, when the sounding element 130 is not activated, the resonant cavity 120 can reduce the operating noise of the fan unit 110 by the characteristics of the Helmholtz resonant cavity (ie, the characteristic of the sound reduction); when the sounding element 130 is activated The resonant cavity 120 can be used as a speaker component of the sounding element 130. When the fan element 110 passes through the ventilation cavity 140 to perform the air discharge, the resonance film 160 introduces the air vibration energy generated when the fan unit 110 is out of the air into the resonance cavity 120. Subsequently, the resonant cavity 120 generates a standing wave having a specific frequency according to the air vibration energy, and amplifies the sound volume of the corresponding frequency section of the sounding unit 130 according to the standing wave having the specific frequency.

In one embodiment, when the resonant cavity 120 is a Helmholtz resonant cavity, the resonant cavity 120 can be designed according to the following relationship:

For example, f ₀ represents the resonance frequency of the Helmholtz resonator, c represents the sound velocity, S represents the cross-sectional area of the resonance film 160, d represents the diameter length of the resonance film 160, and V represents the internal volume of the resonance cavity 120, L represents the thickness of the resonant cavity 120 corresponding to the joint between the resonant cavity 120 and the resonant film 160. By setting the resonance frequency f _{0 in} accordance with the actual demand in advance, the numerical correspondence between all the above parameters can be obtained, thereby constructing the resonant cavity 120. In this embodiment, the resonant frequency f ₀ can be set according to the frequency of the operating noise of the fan unit 110. Thus, the resonant cavity 120 can be characterized by the Helmholtz resonant cavity (ie, the characteristic of the sound reduction). The operating noise of the fan unit 110 is effectively reduced.

2 is a flow chart of a volume adjustment method 200 drawn in accordance with an embodiment disclosed herein. In one embodiment, the volume adjustment method 200 can be applied to the above-described cooling fan device 100, but the present invention is not limited thereto. In order to facilitate understanding of the volume adjustment method 200, the cooling fan device 100 will be exemplified as an exemplary implementation of the volume adjustment method 200. As shown in FIG. 2, the volume adjustment method 200 includes the following steps: S201: generating a standing wave according to the operation of the fan unit 110 through the resonant cavity 120; and S202: amplifying the sounding unit 130 according to the standing wave through the resonant cavity 120. Sound volume.

In an embodiment, referring to step S201, when the cooling fan device 100 passes through the fan unit 110 to perform air blowing, the volume adjustment method 200 can be executed through the resonant cavity 120 and generated according to the fan unit 110 when the air is discharged. The air vibrates energy to generate standing waves. In another embodiment, when the cooling fan device 100 passes through the fan unit 110 to perform air blowing, the volume adjustment method 200 can be executed by the resonant film 160 in the resonant cavity 120 and generated when the fan unit 110 is ventilated. The air vibration energy is introduced into the resonant cavity 120. Thus, the resonant cavity 120 can generate standing waves according to the vibrational energy of the air introduced by the resonant film 160.

In another embodiment, referring to step S202, after the standing wave is generated by the vibration energy generated by the fan cavity 110 according to the air generated by the fan unit 110, the volume adjustment method 200 can be performed through the resonant cavity 120. And the sound volume of the corresponding frequency section of the sounding unit 130 is amplified according to the frequency of the standing wave. For example, when the sounding element 130 is not activated, the resonant cavity 120 can be transmitted to reduce the operating noise of the fan unit 110 (ie, by the characteristics of the Helmholtz resonant cavity); when the sounding element 130 is activated, the resonant cavity The body 120 can be used as a speaker component of the sounding element 130. When the cooling fan device 100 passes through the fan unit 110 to perform the air discharge, the air vibration energy generated when the fan unit 110 is ventilated through the resonance film 160 is transmitted to the resonance cavity 120. Subsequently, a standing wave having a specific frequency is generated by the resonant cavity 120 according to the air vibration energy, and the sound volume of the corresponding frequency section of the sounding unit 130 is amplified according to the standing wave having the specific frequency.

In the above embodiment, the cooling fan device and the volume adjusting method disclosed in the present invention use the Helmholtz resonant cavity to reduce or amplify the sound, thereby respectively reducing and amplifying the sound generated by the fan unit and the sounding unit. . For example, when the sounding unit is not operating, the Helmholtz resonant cavity can be used to reduce the operating noise of the fan unit; when the sounding unit is operating, the Helmholtz resonant cavity can be used as a speaker component of the sounding unit and used to amplify the sound. The sound volume of the unit enhances the user's auditory experience quality. Therefore, the cooling fan device and the volume adjusting method disclosed in the present invention can not only effectively maintain the heat dissipation performance of the fan unit and reduce the operating noise of the fan unit, but also enhance the user's experience quality by amplifying the sound volume of the sounding unit.

Those skilled in the art will readily appreciate that the disclosed embodiments achieve the advantages of one or more of the foregoing examples. After reading the foregoing description, those skilled in the art will be able to make various modifications, substitutions, equivalents, and various other embodiments. Therefore, the scope of protection of this case is mainly based on the scope of the patent application and its equal scope.

100‧‧‧Distribution fan unit

110‧‧‧Fan unit

120‧‧‧Resonant cavity

130‧‧‧ Sounding unit

140‧‧‧Inlet air chamber

150‧‧‧ Heat sink fins

160‧‧‧Resonance film

200‧‧‧Volume adjustment method

S201, S202‧‧‧ steps

1A and 1B are schematic diagrams showing the structure of a heat dissipation fan device according to an embodiment disclosed in the present disclosure; and FIG. 2 is a flow chart showing a volume adjustment method according to an embodiment disclosed in the present disclosure.

Claims (6)

A cooling fan device is applied to a computer device, comprising: a fan unit for introducing air to dissipate heat for the computer device; and a resonant cavity body combined with the fan unit for generating according to the operation of the fan unit a standing wave, and the resonant cavity includes a Helmholtz resonant cavity and a resonant film; a venting cavity is coupled to the fan unit and the resonant cavity, wherein the fan unit passes through the venting cavity When the body is in the air, the resonant film of the resonant cavity is used to generate the standing wave when the air vibration energy generated by the fan unit is discharged into the resonant cavity; and a sounding unit is integrated The resonant cavity, wherein the resonant cavity is configured to amplify the sound volume of the sounding unit according to the standing wave. The heat dissipation fan device of claim 1, wherein the resonant cavity is configured to amplify a sound volume of a corresponding frequency section of the sounding unit according to a frequency of the standing wave. The cooling fan device of claim 1, wherein the resonant cavity comprises a rigid body structure. The cooling fan device of claim 3, wherein the resonant cavity comprises one of a metal material, a ceramic material, a plastic material, and a wood material. A volume adjustment method is applied to a cooling fan device, wherein the cooling fan device comprises a fan unit, a resonant cavity and a sounding unit, and the resonant cavity comprises a Helmholtz resonant cavity and a resonant film, wherein The resonant cavity is coupled to the fan unit, and the sounding unit is integrated in the resonant cavity. The volume adjustment method includes: when the fan unit is ventilated to transmit air, the resonant film in the resonant cavity is passed to The air vibration energy generated when the fan unit is out of the air is transmitted into the resonant cavity to generate a standing wave; and the sound volume of the sounding unit is amplified according to the standing wave through the resonant cavity. The volume adjustment method of claim 5, wherein amplifying the sound volume of the sounding unit according to the standing wave through the resonant cavity comprises: amplifying, by the resonant cavity, a corresponding frequency of the sounding unit according to a frequency of the standing wave The volume of the sound of the section.