CN210986337U

CN210986337U - Heat pipe and speaker device

Info

Publication number: CN210986337U
Application number: CN201922227882.6U
Authority: CN
Inventors: 刘鹏辉
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-07-10
Anticipated expiration: 2029-12-11

Abstract

The utility model provides a heat pipe, wherein a plurality of condensing runners are arranged in a condensing end, and each condensing runner comprises a condensing inlet end and a condensing outlet end; a plurality of evaporation flow channels are arranged in the evaporation end, and are sequentially communicated end to form an evaporation flow channel unit, and the evaporation flow channel unit comprises an evaporation inlet end and an evaporation outlet end; the two ends of the conduction part are respectively connected with the condensation end and the evaporation end; a first conduction flow channel and a second conduction flow channel are arranged in the conduction part, the condensation outlet end is communicated with the head end of the first conduction flow channel, the evaporation inlet end is communicated with the tail end of the first conduction flow channel, and the equivalent diameter of the first conduction flow channel is gradually reduced from the head end to the tail end; two ends of the second conduction flow channel are respectively communicated with the condensation inlet end and the evaporation outlet end; the heat exchange working medium is filled in the heat pipe. The utility model also provides a speaker device. Compared with the prior art, the utility model discloses heat pipe and speaker device's radiating effect is good.

Description

Heat pipe and speaker device

[ technical field ] A method for producing a semiconductor device

The utility model relates to an acoustoelectric field especially relates to a heat pipe and utilize speaker device of this heat pipe.

[ background of the invention ]

With the advent of the mobile internet age, the number of smart mobile devices is increasing. Among the mobile devices, the mobile phone is undoubtedly the most common and portable mobile terminal device. A large number of sound generating units for playing sound are used in smart mobile devices such as mobile phones.

The mobile terminal in the related art comprises a shell, a screen, a heat source, a loudspeaker box and a heat pipe, wherein the screen is covered on the shell and forms an accommodating space together with the shell; the heat pipe is filled with a heat exchange working medium and comprises a condensation end, an evaporation end and a transmission part for connecting the condensation end and the evaporation end, the evaporation end is attached to the heat source, and the condensation end is attached to the loudspeaker box and connected with the front cavity of the loudspeaker box; the loudspeaker is taken as a sound production part of an electronic product, the vibration sound production process of the loudspeaker is accompanied with rapid flow of air flow in the front cavity, the loudspeaker device with the heat radiation effect besides sound production is formed when the loudspeaker device is combined with the heat pipe, a forced convection heat exchange scene can be manufactured, compared with natural convection, the total heat exchange coefficient between a heat exchange working medium and air can be improved in the heat exchange process of forced convection, the higher turbulence degree of an air end is more favorable for thinning a boundary layer, more violent energy transfer can be caused in the air due to the improvement of the turbulence degree, heat radiation is realized, and the heat radiation effect of a condensation end of the heat pipe can be improved.

However, in the related art, in the heat dissipation process of the speaker device formed by combining the heat pipe and the speaker, the heat flow density of the heat source is relatively equal to the heat exchange coefficient of the heat exchange working medium, after the heat is rapidly conducted to the heat exchange working medium, the heat exchange working medium is required to be rapidly condensed and evaporated by the efficient heat transfer efficiency, and the phase change of the heat exchange working medium instantly causes the magnitude order of the heat exchange coefficient of the heat exchange working medium to be improved. The phase change will inevitably cause the change of the volume of the heat exchange working medium, the volume is reduced during condensation, and the volume is increased during evaporation. But the inside passageway of hot pipe is mostly equivalent diameter in the correlation technique, and during heat transfer working medium physical state changed, its torrent effect greatly reduced at the condensation zone, causes worsening of heat transfer effect, carries out the heat exchange with the outside air at the condensation end of hot pipe moreover, and the heat transfer effect of air this moment is very poor, and this has just caused condensation end and evaporation end both ends heat transfer inhomogeneous, and the lower heat transfer effect of final air has restricted whole heat transfer performance.

Therefore, there is a need to provide a new heat pipe and speaker device to solve the above-mentioned problems.

[ Utility model ] content

An object of the utility model is to provide a heat pipe and speaker device that the radiating effect is good.

To achieve the above object, the present invention provides a heat pipe, including:

the condensation end is internally provided with a plurality of condensation channels, and each condensation channel comprises a condensation inlet end and a condensation outlet end;

the evaporation end is internally provided with a plurality of evaporation flow channels which are sequentially communicated end to form an evaporation flow channel unit, and the evaporation flow channel unit comprises an evaporation inlet end and an evaporation outlet end;

the two ends of the conduction part are respectively connected with the condensation end and the evaporation end; a first conduction flow channel and a second conduction flow channel are arranged in the conduction part, the condensation outlet end is communicated with the head end of the first conduction flow channel, the evaporation inlet end is communicated with the tail end of the first conduction flow channel, and the equivalent diameter of the first conduction flow channel is gradually reduced from the head end to the tail end; both ends of the second conduction flow channel are respectively communicated with the condensation inlet end and the evaporation outlet end; and the number of the first and second groups,

the heat exchange working medium is filled in the heat pipe, heat generated by the evaporation end is transferred to the condensation end along with the heat exchange working medium through the second conduction flow channel and is released by the condensation end, and the heat exchange working medium circularly flows in the evaporation flow channel, the second conduction flow channel, the condensation flow channel and the first conduction flow channel.

Preferably, the equivalent diameters of the plurality of evaporation flow channels increase in sequence from the evaporation inlet end to the evaporation outlet end.

Preferably, the plurality of condensing flow channels are uniformly arranged.

Preferably, a plurality of the evaporation flow channels are arranged in parallel with each other.

Preferably, the equivalent diameter of the tail end of the first flow guide channel is the same as the equivalent diameter of the evaporation flow channel communicated with the tail end of the first flow guide channel.

Preferably, the condensation end, the evaporation end and the conduction part are of an integrally formed structure.

The utility model also provides a loudspeaker device, which comprises a loudspeaker box and a heat source device which is separated from the loudspeaker box, wherein the loudspeaker box is provided with a front cavity for sounding; the speaker device includes the utility model provides an above-mentioned heat pipe, the condensation end with the front chamber is connected, the evaporation end with the heat source device is connected.

Preferably, the speaker box comprises a housing having a first accommodating space, a sound generating unit accommodated in the first accommodating space, and a sound guiding channel formed in the housing; the sound-producing monomer comprises a vibrating diaphragm for vibrating and producing sound, the vibrating diaphragm divides the first accommodating space into a front sound cavity and a rear cavity, and the sound guide channel communicates the front sound cavity with the outside and forms the front cavity together with the front sound cavity; the condensation end is embedded in the shell, and two opposite sides of the condensation end are respectively connected with the outside and the front sound cavity.

Preferably, the condensation end and the shell are integrally formed by injection molding.

Preferably, the heat source device is any one of a processor and a battery.

Compared with the prior art, in the heat pipe and speaker device, the condensation outlet end of the heat pipe is communicated with the head end of the first conducting channel, the evaporation inlet end is communicated with the tail end of the first conducting channel, and the equivalent diameter of the first conducting channel is gradually reduced from the head end to the tail end; and two ends of the second conduction flow channel are respectively communicated with the condensation inlet end and the evaporation outlet end. The structure ensures that when the heat exchange working medium is liquefied from the condensation end and flows back to the evaporation end through the first conduction flow channel, the equivalent diameter at the evaporation inlet end is rapidly reduced compared with that at the condensation outlet end, at the moment, the flow velocity of the liquid heat exchange working medium is increased, the flow turbulence degree is enhanced, and the exchange of substances in the heat exchange working medium is violent; meanwhile, the degree of flocculation is improved, the thickness of a boundary layer for heat exchange is greatly reduced, the thermal resistance is further reduced, and the heat transfer effect is effectively improved by combining the two aspects. In addition, in a plurality of evaporation flow passages of the evaporation end, the equivalent diameters of the plurality of evaporation flow passages are sequentially increased from the evaporation inlet end to the evaporation outlet end, and the design can provide an expansion space for the heat exchange working medium when the heat exchange working medium is evaporated into gas, so that the flow rate of the heat exchange working medium is uniform, the pressure is average, and the heat exchange with a heat source is quicker and more stable.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:

FIG. 1 is a schematic structural view of a heat pipe of the present invention;

FIG. 2 is a schematic view showing the flow direction of the heat exchange medium at the evaporation end of the heat pipe of the present invention;

fig. 3 is a schematic perspective view of the speaker device of the present invention;

fig. 4 is a schematic view of a partial three-dimensional structure of the speaker device of the present invention;

fig. 5 is a schematic structural view of the novel speaker device applied to the mobile terminal.

[ detailed description ] embodiments

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The utility model provides a heat pipe and loudspeaker device of application this heat pipe.

Referring to fig. 1-2, the present invention provides a heat pipe 100, including: condensation end 1, evaporation end 2, conduction portion 3 and heat transfer working medium 4.

In the present embodiment, the condensation end 1, the evaporation end 2, and the conduction part 3 are formed integrally.

A plurality of condensing channels 11 are disposed inside the condensing end 1, and each condensing channel 11 includes a condensing inlet 111 and a condensing outlet 112.

A plurality of evaporation flow channels 21 are arranged in the evaporation end 2, the evaporation flow channels 21 are sequentially communicated end to form an evaporation flow channel unit 20, and the evaporation flow channel unit 20 comprises an evaporation inlet end 201 and an evaporation outlet end 202.

In the present embodiment, the plurality of evaporation flow channels 21 are arranged in parallel to each other, so that the path of the evaporation flow channel unit 20 is longer in the space having the same volume, thereby improving the heat transfer effect.

The two ends of the conduction part 3 are respectively connected with the condensation end 1 and the evaporation end 2 and are used for transferring the heat of the evaporation end 2 to the condensation end 1.

The conduction part 3 is provided therein with a first conduction flow channel 31 and a second conduction flow channel 32.

The condensation outlet end 112 of the condensation flow channel 11 is communicated with the head end 311 of the first flow channel 31, the evaporation inlet end 201 of the evaporation flow channel unit 20 is communicated with the tail end 312 of the first flow channel 31, and the equivalent diameter of the first flow channel 31 is gradually reduced from the head end 311 to the tail end 312.

Both ends of the second conduction flow path 32 are respectively communicated with the condensation inlet end 111 and the evaporation outlet end 202.

The heat exchange working medium 4 is filled in the heat pipe 100, and heat generated by the evaporation end 2 is transferred to the condensation end 1 along with the heat exchange working medium 4 through the second conduction flow channel 32 and is released by the condensation end 1, so that heat transfer is realized. The heat exchange working medium exchanges heat with air at the condensation end 1 of the heat pipe 100, the gaseous heat exchange working medium is changed into liquid, the volume is reduced, and the gaseous heat exchange working medium flows back to the evaporation end 2 under the pushing of the evaporation pressure of the evaporation end 2; the liquid heat exchange working medium absorbs heat from heat sources such as processors, evaporates into a gas state and flows to the condensation end 1, so as to form a circulation, that is, the liquid heat exchange working medium circularly flows in the evaporation flow channel 21, the second conduction flow channel 32, the condensation flow channel 11 and the first conduction flow channel 31, thereby realizing heat dissipation of the heat sources.

The equivalent diameter of the first conducting channel 31 is gradually reduced from the head end 311 to the tail end 312, and the arrangement enables the first conducting channel 31 to form a channel structure with gradually-changed equivalent diameter at the two ends of the condensation end 1 and the evaporation end 2, so that the flow velocity of the liquid heat exchange working medium at the condensation end 1 is increased, the degree of flow disorder is enhanced, and the material exchange in the heat exchange working medium is severe; meanwhile, the degree of flocculation is improved, the thickness of a boundary layer for heat exchange is greatly reduced, the thermal resistance is further reduced, and the heat transfer effect is effectively improved by combining the two aspects.

Preferably, in the present embodiment, the plurality of condensing channels 11 are uniformly arranged; the equivalent diameters of the plurality of evaporation flow channels 21 increase in order from the evaporation inlet end 201 toward the evaporation outlet end 202 (the direction in which the heat exchange medium flows). The equivalent diameter of the same evaporation channel 21 is a fixed value.

It should be noted that, it is also possible that the equivalent diameter of the same evaporation flow channel 21 is increased in the direction from the evaporation inlet end 201 to the evaporation outlet end 202 of the evaporation flow channel unit 20 (the direction of the heat exchange medium flow).

In this structural setting, because of the even isobaric dispersion in condensation runner 11 of gaseous state heat transfer working medium of condensation end 1, consequently, condensation runner 11 evenly spreads the setting, and is carrying out the heat exchange in-process more evenly with the outside air, and the radiating effect is stable.

The evaporation ends 2 are different, when the heat exchange working medium is liquefied by the condensation end 1 and flows back to the evaporation end 2 through the first conduction channel, the equivalent diameter at the evaporation inlet end 201 is reduced rapidly compared with that at the condensation outlet end 112, at the moment, the flow velocity of the liquid heat exchange working medium is increased, the flow turbulence degree is enhanced, and the exchange of substances in the heat exchange working medium is severe; meanwhile, the degree of flocculation is improved, the thickness of a boundary layer for heat exchange is greatly reduced, the thermal resistance is further reduced, and the heat transfer effect is effectively improved by combining the two aspects. Meanwhile, the above structural design of the evaporation flow channel 21 can provide an expansion space for the heat exchange working medium when the heat exchange working medium is evaporated into gas, so that the flow rate of the heat exchange working medium is uniform, the pressure is average, and the heat exchange with a heat source is quicker and more stable.

In this embodiment, the equivalent diameter of the tail end 312 of the first flow guiding channel 31 is the same as the equivalent diameter of the evaporation flow channel 21 communicated with the tail end 312, or at least not larger than the equivalent diameter of the evaporation flow channel 21 communicated with the tail end 312, so as to avoid increasing the flow resistance of the heat exchange medium and improve the transfer effect.

Referring to fig. 3 and 4, the present invention also provides a speaker device 200, which includes a speaker box 300 and a heat source unit 400 spaced apart from the speaker box 300.

The loudspeaker enclosure 300 has a front cavity 310 for sound production; the speaker device 200 further includes the above heat pipe 100 provided by the present invention, the condensation end 1 is connected to the front cavity 310, and the evaporation end 2 is connected to the heat source device 400.

The evaporation end 2 conducts heat of the heat source device 400 to the condensation end 1 through the conduction part 3, the condensation end 1 is connected with the front cavity 310, active airflow exchange is formed when the front cavity 310 of the loudspeaker box 300 occurs, and therefore heat of the condensation end 1 is rapidly dissipated through the airflow exchange.

Specifically, the speaker box 300 includes a housing 301 having a first receiving space, a sound generating unit 302 received in the first receiving space, and a sound guiding channel 303 formed in the housing 301. The sound generating unit 302 includes a diaphragm 3021 for generating sound by vibration, the diaphragm 3021 divides the first accommodating space into a front sound cavity 304 and a rear cavity (not shown), and the sound guiding channel 303 communicates the front sound cavity 304 with the outside and forms the front cavity 310 together with the front sound cavity 304.

The condensation end 1 is embedded in the housing 301, and two opposite sides of the condensation end 1 are respectively connected with the outside and the front cavity 310. Preferably, the condensation end 1 and the housing 310 are integrally formed by injection molding.

This arrangement allows one side of the condensation terminal 1 to be in direct contact with the air in the front chamber 310 and the other side to be in direct contact with the outside air of the speaker box 300 or the case of the mobile terminal, and one side heat conduction and heat radiation are combined to dissipate heat and the other side heat radiation is dissipated heat. The evaporation end 2 is connected with the heat source device 400, heat of the heat source device 400 is transferred to the heat exchange working medium inside the heat pipe 100 and conducted to the condensation end 1, and the heat exchange working medium is evaporated and condensed inside the heat pipe 100 to transfer and transfer heat, so that the purpose of heat dissipation is achieved.

The condensation end 1 conducts heat to the front sound cavity 304 (which may be a sound guiding channel 303), and the diaphragm 3021 vibrates to push air in the front sound cavity 304 to circulate with the outside through the sound guiding channel 303. Specifically, the volume of the front acoustic cavity 304 changes when the diaphragm 121 vibrates: when the volume of the front sound cavity 304 becomes smaller, the diaphragm 3021 discharges part of the air in the front sound cavity 304 to the outside through the sound guide channel 303; when the volume of the front sound cavity 304 becomes larger, the diaphragm 3021 sucks the external space into the front sound cavity 304 through the sound guide channel 303; the above process convects the air in the front acoustic chamber 304 with the air in the outside. The vibration of the diaphragm 3021 causes the heat in the front acoustic cavity 304 to be dissipated out of the housing 301 along with the circulation of air, so that the heat dissipation of the heat source device 400 is realized, and the heat dissipation effect of the speaker apparatus 200 is good.

In the present embodiment, the heat source device 400 is any one of a processor and a battery, but is not limited thereto.

It should be noted that the vibration of the diaphragm 3021 may be in a sound mode or a non-sound mode, and the heat conducted into the front sound cavity 304 may be dissipated to the outside along with the air circulation. So that the speaker box 300 can exclusively perform the work of dissipating heat.

Specifically, a pulse signal of a lower frequency is input to the speaker box 300, and a low frequency sound generated in the speaker box 300 is not heard by human ears. In this embodiment, the input lower frequency is below 1000 Hz. In a specific application, the speaker box 300 can play the pulse signal alone when not performing a music playing task; the speaker box 300 may also superimpose the pulse signal into the music signal while performing the music play task. Because the signal is an ultra-low frequency pulse signal, the signal can not be heard by human ears and the normal listening effect is not influenced.

As shown in fig. 5, when the speaker device 200 is applied to the mobile terminal 500, the mobile terminal 500 includes a housing 502 having a second receiving space 501 and the speaker device 200, and the speaker device 200 is mounted in the second receiving space 501. The housing 502 is provided with a sound outlet channel 503 penetrating therethrough, and the sound outlet channel 503 is in air communication with the front sound cavity 304 through the sound guide channel 303 so as to radiate heat of the heat source device 400 conducted to the front sound cavity 304 through the heat pipe 100 to the outside of the housing 502.

The above embodiments of the present invention are only described, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept, but these all fall into the protection scope of the present invention.

Claims

1. A heat pipe, comprising:

2. A heat pipe as claimed in claim 1 wherein said plurality of evaporation channels have successively larger equivalent diameters from said evaporation inlet end toward said evaporation outlet end.

3. A heat pipe as claimed in claim 2 wherein said plurality of condensing flow passages are uniformly arranged.

4. A heat pipe as claimed in claim 2 wherein a plurality of said evaporation flow paths are arranged in parallel with each other.

5. A heat pipe as claimed in claim 2 wherein the equivalent diameter of the trailing end of said first flow conduit is the same as the equivalent diameter of said evaporator flow conduit communicating with the trailing end thereof.

6. A heat pipe as claimed in claim 1 wherein said condensing end, said evaporating end and said conducting portion are of an integrally formed construction.

7. A loudspeaker device comprising a loudspeaker enclosure having a front volume for generating sound and a heat source means spaced from the loudspeaker enclosure, wherein the loudspeaker device further comprises a heat pipe according to any of claims 1-6, the condenser end being connected to the front volume and the evaporator end being connected to the heat source means.

8. The speaker device according to claim 7, wherein the speaker box comprises a housing having a first receiving space, a sound generating unit received in the first receiving space, and a sound guiding channel formed in the housing; the sound-producing monomer comprises a vibrating diaphragm for vibrating and producing sound, the vibrating diaphragm divides the first accommodating space into a front sound cavity and a rear cavity, and the sound guide channel communicates the front sound cavity with the outside and forms the front cavity together with the front sound cavity; the condensation end is embedded in the shell, and two opposite sides of the condensation end are respectively connected with the outside and the front sound cavity.

9. The speaker device of claim 8, wherein the condenser end is injection molded integrally with the housing.

10. The speaker device according to claim 7, wherein the heat source means is any one of a processor and a battery.