IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0379508
(2006-04-20)
|
등록번호 |
US-7793709
(2010-10-04)
|
우선권정보 |
JP-P2005-123432(2005-04-21) |
발명자
/ 주소 |
- Mukasa, Tomoharu
- Hori, Kazuhito
- Ishikawa, Hiroichi
- Yokomizo, Kanji
- Makino, Takuya
- Nakayama, Norikazu
|
출원인 / 주소 |
|
대리인 / 주소 |
Sonnenschein Nath & Rosenthal LLP
|
인용정보 |
피인용 횟수 :
5 인용 특허 :
5 |
초록
▼
A jet generating device includes a vibrating member which vibrates gas, a driving unit which drives the vibrating member, and a housing which has a first opening and a first chamber connected to the first opening and containing the gas. The housing supports the vibrating member, and is such that, of
A jet generating device includes a vibrating member which vibrates gas, a driving unit which drives the vibrating member, and a housing which has a first opening and a first chamber connected to the first opening and containing the gas. The housing supports the vibrating member, and is such that, of sounds generated as a result of vibrating the vibrating member, the sound having a maximum noise level has a predetermined frequency. In addition, the housing discharges the gas as pulsating gas through the first opening as a result of driving the vibrating member.
대표청구항
▼
What is claimed is: 1. A jet generating device comprising: a vibrating member which vibrates gas; a driving unit which drives the vibrating member; and a housing (a) which has at least one first opening and a first chamber containing the gas, (b) supports the vibrating member, and (c) is such that,
What is claimed is: 1. A jet generating device comprising: a vibrating member which vibrates gas; a driving unit which drives the vibrating member; and a housing (a) which has at least one first opening and a first chamber containing the gas, (b) supports the vibrating member, and (c) is such that, of sounds generated as a result of vibrating the vibrating member, the sound having a maximum noise level has a predetermined frequency, the housing discharging the gas as pulsating gas through the at least one first opening as a result of driving the vibrating member, the first chamber being connected to the at least one first opening, wherein, the housing is configured to produce the predetermined frequency utilizing a length of the at least one first opening, an opening area of the at least one first opening, and a volume of the first chamber, the length being in a direction in which the gas which is vibrated as a result of driving the vibrating member is discharged from the at least one first opening, the predetermined frequency reduces the sounds audible to a user of a device associated with the jet generating device without reducing an amount of the discharged gas, and when a sound velocity is C[m/s], a volume of the first chamber is V1 [m3], an equivalent circular radius of an opening area of the at least one first opening is r1 [m], the number of the at least one first opening is n1, and a length of the at least one first opening is L1 [m], any one of {C/(2π)}[πr12/{V1/(1.2r1·n11/2+L)}]1/2<1000 as the predetermined frequency, {C/(2π)}[πr12/{V1/(1.2r1·n11/2+L)}]1/2<500 as the predetermined frequency {C/(2π)}[πr12/{V1/(1.2r1·n11/2+L1)}]1/2<20 as the predetermined frequency, {C/(2π)}[πr12/{V1/(1.2r1·n11/2+L1)}]1/2≧6000 as the predetermined frequency, {C/(2π)}[πr12/{V1/(1.2r1·n11/2+L1)}]1/2≧10000 as the predetermined frequency, and {C/(2π)}[πr12/{V1/(1.2r1·n11/2+L1)}]1/2≧20000 as the predetermined frequency is satisfied. 2. The jet generating device according to claim 1, wherein: the predetermined frequency does not correspond to a resonant frequency of the housing and is effective to reduce the sounds audible to the user, and the predetermined frequency is any one of equal to or greater than 1 [Hz] and less than 1 [kHz], equal to or greater than 1 [Hz] and less than 500 [Hz], equal to or greater than 1 [Hz] and less than 20 [Hz], equal to or greater than 6 [kHz] and less than 40 [kHz], equal to or greater than 10 [kHz] and less than 40 [kHz], and equal to or greater than 20 [kHz] and less than 40 [kHz]. 3. The jet generating device according to claim 1, wherein: the housing further has at least one second opening and a second chamber (a) connected to the at least one second opening, (b) disposed opposite to the first chamber, and (c) containing the gas, the gas being alternately discharged as the pulsating gas through the at least one first opening and the at least one second opening by driving the vibrating member, and the sounds generated by alternatively discharging the pulsating gas through the at least one first opening and the at least one second opening destructively interfere with each other to reduce the sounds. 4. The jet generating device according to claim 3, wherein: in order for the sound having the maximum noise level to have the predetermined frequency, at least one of a length of the at least one second opening, an opening area of the at least one second opening, and a volume of the second chamber is set, the length being in a direction in which the gas which is vibrated as a result of driving the vibrating member is discharged from the at least one second opening, and sound waves from the at least one second opening are of an opposite phase of sound waves from the at least one first opening, wherein the sounds waves combine to reduce the sounds through destructive interference. 5. The jet generating device according to claim 3, wherein: the predetermined frequency does not correspond to a resonant frequency of the housing to reduce the sounds audible to the user, and the predetermined frequency is any one of equal to or greater than 1 [Hz] and less than 1 [kHz], equal to or greater than 1 [Hz] and less than 500 [Hz], equal to or greater than 1 [Hz] and less than 20 [Hz], equal to or greater than 6 [kHz] and less than 40 [kHz], equal to or greater than 10 [kHz] and less than 40 [kHz], and equal to or greater than 20 [kHz] and less than 40 [kHz]. 6. The jet generating device according to claim 3, wherein, when a sound velocity is C[m/s], the volume of the second chamber is V2 [m3], an equivalent circular radius of the opening area of the at least one second opening is r2 [m], the number of the at least one second opening is n2, and the length of the at least one second opening is L2 [m], any one of {C/(2π)}[πr22/{V2/(1.2r29·n21/2+L2)}]1/2<1000, {C/(2π)}[πr22/{V2/(1.2r2·n21/2+L2)}]1/2<500, {C/(2π)}[πr22/{V2/(1.2r2·n21/2+L2)}]1/2<20, {C/(2π)}[πr22/{V2/(1.2r2·n21/2+L2)}]1/2≧6000, {C/(2π)}[πr22/{V2/(1.2r2·n21/2+L2)}]1/2≧10000, and {C/(2π)}[πr22/{V2/(1.2r2·n21/2+L2)}]1/2≧20000 is satisfied. 7. The jet generating device according to claim 3, wherein: the housing further has a partition plate disposed at a surface of the housing between the at least one first opening and the at least one second opening, and the partition prevents a same volume of the gas from simultaneously leaving and entering the at least first opening and the at least second opening to maximize the gas utilized to cool a heating element. 8. The jet generating device according to claim 3, wherein, when an equivalent circular radius of an opening area of the at least one first opening and an equivalent circular radius of an opening area of the at least one second opening, which are substantially the same, are r[m], a distance between the at least one first opening and the at least one second opening is d[m], and a wavelength of the sound having the maximum noise level is λ[m], 3r≦d<λ/2 is satisfied. 9. The jet generating device according to claim 3, wherein the at least one first opening has a first end which is disposed adjacent to the first chamber so that an opening area of the at least one first opening increases towards the first chamber. 10. The jet generating device according to claim 3, wherein the at least one second opening has a second end which is disposed adjacent to the second chamber so that an opening area of the at least one second opening increases towards the second chamber. 11. The jet generating device according to claim 3, wherein the at least one first opening has a first end which is disposed at an outer side of the housing so that an opening area of the at least one first opening increases at a sloped angle towards the outer side of the housing. 12. The jet generating device according to claim 11, wherein the at least one second opening has a second end which is disposed at the outer side of the housing so that an opening area of the at least one second opening increases at a sloped angle towards the outer side of the housing. 13. The jet generating device according to claim 3, wherein the at least one first opening has a first end and a second end, the first end being disposed adjacent to the first chamber so that an opening area of the at least one first opening increases towards the first chamber, the second end being disposed at an outer side of the housing so that the opening area of the at least one first opening increases towards the outer side of the housing. 14. The jet generating device according to claim 13, wherein the at least one second opening has a third end and a fourth end, the third end being disposed adjacent to the second chamber so that an opening area of the at least one second opening increases towards the second chamber, the fourth end being disposed at the outer side of the housing so that the opening area of the at least one second opening increases towards the outer side of the housing. 15. The jet generating device according to claim 3, wherein: the housing further has a first nozzle for forming the at least one first opening therein, the first nozzle having a first inclined surface which is such as to reduce a width of the first nozzle towards an outer side of the housing, and the housing further has a second nozzle for forming the at least one second opening therein, the second nozzle having a second inclined surface which is such as to reduce a width of the second nozzle towards the outer side of the housing. 16. The jet generating device according to claim 1, wherein the at least one first opening has an end which is disposed adjacent to the first chamber so that an opening area of the at least one first opening increases towards the first chamber. 17. The jet generating device according to claim 1, wherein the at least one first opening has an end which is disposed at an outer side of the housing so that an opening area of the at least one first opening increases towards the outer side of the housing. 18. The jet generating device according to claim 1, wherein the at least one first opening has a first end and a second end, the first end being disposed adjacent to the first chamber so that an opening area of the at least one first opening increases towards the first chamber, the second end being disposed at an outer side of the housing so that the opening area of the at least one first opening increases towards the outer side of the housing. 19. The jet generating device according to claim 1, wherein the housing further has a first nozzle for forming the at least one first opening therein, the first nozzle having a first inclined surface which is such as to reduce a width of the first nozzle towards an outer side of the housing. 20. An electronic apparatus comprising: a heating element; a vibrating member which vibrates gas; a driving unit which drives the vibrating member; and a housing which (a) has at least one first opening and a first chamber containing the gas, (b) supports the vibrating member, and (c) is such that, of sounds generated as a result of vibrating the vibrating member, the sound having a maximum noise level has a predetermined frequency, the housing discharging the gas as pulsating gas towards the heating element through the at least one first opening as a result of driving the vibrating member, the first chamber being connected to the at least one first opening, wherein, the housing is configured to produce the predetermined frequency utilizing a length of the at least one first opening, an opening area of the at least one first opening, and a volume of the first chamber, the length being in a direction in which the gas which is vibrated as a result of driving the vibrating member is discharged from the at least one first opening, the maximum noise level of the sound having the predetermined frequency is reduced without reducing an amount of the discharged gas, the predetermined frequency reduces the sounds audible to a user of a device associated with the jet generating device without reducing an amount of the discharged gas, the predetermined frequency does not correspond to a Helmholtz resonant frequency of the housing to reduce the sounds audible to the user, when a sound velocity is C[m/s] a volume of the first chamber is V1 [m3], an equivalent circular radius of an opening area of the at least one first opening is r1[m] the number of the at least one first opening is n1 and a length of the at least one first opening is L1 [m], any one of {C/(2π}πr12/{V1/(1.2r1·n11/2+L)}1/2<1000 as the predetermined frequency, {C/(2π)}[πr12/{V1/(1.2r1·n11/2+L}]1/2<500 as the predetermined frequency, {C/(2π)}[πr12/{V1/(1.2r1·n11/2+L1)}]1/2<20 as the predetermined frequency, {C/(2π)}[πr12/{V1/(1.2r1·n11/2+L1)}]1/2≧6000 as the predetermined frequency, {C/(2π)}[πr12/{V1/(1.2r1·n11/2+L1)}]1/2≧10000 as the predetermined frequency, and {C/(2π)}[πr12/{V1/(1.2r1·n11/2+L1)}]1/2≧20000 as the predetermined frequency is satisfied, the predetermined frequency is effective to reduce the sounds audible to the user, and the predetermined frequency is any one of equal to or greater than 1 [Hz] and less than 1 [kHz], equal to or greater than 1 [Hz] and less than 500 [Hz], equal to or greater than 1 [Hz] and less than 20 [Hz] equal to or greater than 6 [kHz] and less than 40 [kHz], equal to or greater than 10 [kHz] and less than 40 [kHz] and equal to or greater than 20 [kHz] and less than 40 [kHz]. 21. An electronic apparatus comprising: a heating element; a vibrating member which vibrates gas; a driving unit which drives the vibrating member; and a housing which (a) has at least one first opening and a first chamber containing the gas, (b) supports the vibrating member, and (c) is such that, of sounds generated as a result of vibrating the vibrating member, the sound having a maximum noise level has a predetermined frequency, the first chamber being connected to the at least one first opening, the housing further includes at least one second opening and a second chamber connected to the at least one second opening, disposed opposite to the first chamber, and containing the gas, the gas being alternately discharged as a pulsating gas through the at least one first opening and the at least one second opening by driving the vibrating member, and wherein sound waves generated by alternatively discharging the pulsating gas through the at least one first opening and the sounds waves of the at least one second opening are of an opposite phase to destructively interfere with each other to reduce the sounds, wherein, the housing is configured to produce the predetermined frequency utilizing a length of the at least one first opening and the at least second opening, an opening area of the at least one first opening and the at least second opening, and a volume of the first chamber and the second chamber, the length being in a direction in which the gas which is vibrated as a result of driving the vibrating member is discharged from the at least one first opening and the at least one second opening to cool the heating element, and the maximum noise level of the sound having the predetermined frequency is reduced without reducing an amount of the discharged gas, wherein the predetermined frequency reduces the sounds audible to a user of a device associated with the jet generating device-without reducing an amount of the discharged gas, and wherein the predetermined frequency does not correspond to a resonant frequency of the housing, when a sound velocity is C[m/s], a volume of the first chamber is V1 [m3], an equivalent circular radius of an opening area of the at least one first opening is r1[m], the number of the at least one first opening is n1 and a length of the at least one first opening is L1 [m], any one of {C/(2π)}[πr12/{V1/(1.2r1·n11/2+L)}]1/2<1000 as the predetermined frequency, {C/(2π)}[πr12/{V1/(1.2r1·n11/2+L)}]1/2<500 as the predetermined frequency, {C/(2π)}[πr12/{V1/(1.2r1·n11/2+L1)}]1/2<20 as the predetermined frequency, {C/(2π)}[πr12/{V1/(1.2r1·n11/2+L1)}]1/2≧6000 as the predetermined frequency, {C/(2π)}[πr12/{V1/(1.2r1·n11/2+L1)}]1/2≧10000 as the predetermined frequency, and {C/(2π)}[πr12/{V1/(1.2r1·n11/2+L1)}]1/2≧20000 as the predetermined frequency is satisfied, the predetermined frequency is effective to reduce the sounds audible to the user, and the predetermined frequency is any one of equal to or greater than 1 [Hz] and less than 1 [kHz], equal to or greater than 1 [Hz] and less than 500 [Hz], equal to or greater than 1 [Hz] and less than 20 [Hz] equal to or greater than 6 [kHz] and less than 40 [kHz], equal to or greater than 10 [kHz] and less than 40 [kHz], and equal to or greater than 20 [kHz] and less than 40 [kHz].
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