![]() Low-frequency tone generator
专利摘要:
A low-frequency sound generator for generating intense sound. It comprises a resonator (10). Pressurized gas is supplied to the resonator as pulses through a feeder (13). The sound generator comprises means for positive feedback of the sound pressure in the resonator to the feeder at a predetermined resonance frequency of the resonator but not at other frequencies. 公开号:SU1240370A3 申请号:SU792787208 申请日:1979-07-02 公开日:1986-06-23 发明作者:Сандстрем Роланд 申请人:Матс Олссон Консулт Аб (Фирма); IPC主号:
专利说明:
The invention relates to devices for sounding signals, in particular to low-frequency sound generators. The purpose of the invention / is to increase the efficiency of sound generation. FIG. 1 - 3 shows variants of the pre-proposal low-frequency sound generator. The low-frequency sound generator contains a resonator made in the form of pipe 1, open on one side and equipped with another on its side fixed by a cover 2 fixed on its end, in which the tubular feeder 3 is concentrically reinforced .. The low-frequency sound generator also contains a membrane 4, provided with annular gaskets 5, after which it is fixed in pipe 1, and a tubular golden slider 6, mounted on a pipe feeder 3, having through-holes along its circumference. ty 7, with the possibility of axial movement on it and overlapping the latter. In doing so, the membrane 4 is mounted on a tubular slide valve & with the possibility of providing their own frequency more resonant frequency of the resonator and less than the frequency of the first harmonic of the generated signal. In addition, the generator contains circular cylindrical sleeves 8, mounted on the Z-cap and equipped with round cylindrical glass-like caps 9 of larger diameter, in which they are placed. . . At the same time, the generator has a pipeline 10, through which the space between the membrane 4 and the cover 2 connect the space inside the pipe 1 from its open side. Also the generator contains between. a membrane 4 and a cap 2 pulsator 11 In addition, it contains a reservoir 12 connected to a tubular feeder 3 and located in the space between the membrane 4 and the cover 2. At the same time, the generator has a valve element 13 connected to the tubular feeder 3 connected to the timer, 14. In addition, the pouch contains a probe 15, kinematically mid-centered 1 st with a membrane 4 and connected to timer 14. Low-frequency sound generator operates as follows. Compressed gas, such as compressed air, passes through a tubular feeder 3 and its through holes 7 and the pipe 1 from its open side, which leads to excitation of a low-frequency sound due to turbulence and friction of the gas flow. When this occurs, the reciprocating movement of the tubular spool slide 6 occurs with a frequency equal to the fundamental frequency of the generated signal, which is determined by the length of the pipe 1. It is; leads to the periodic blocking of the through holes 7 and the reciprocating movement of the membrane 4 with the same frequency. . The circular cylindrical sleeves 8, mounted on the cap 2, ensure that the static pressure is equalized on both sides of the membrane, which is necessary when operating under conditions when the ambient pressure, the environment is not equal to atmospheric. At the same time, round cylindrical glass-shaped caps 9 ensure that foreign particles do not enter the space between the membrane 4 and the cap 2. Pipeline 10 can also provide equalization of static pressure on both sides of the membrane 4, which ensures a reduction in communication with external pressure; medium, since the pipeline ends in pipe 1 in the region of the sound pressure unit. The pulsator 11 ensures that a low-frequency sound generator starts up in the case of the coupling of the tubular slide valve 6 to the tubular feeder 3, which is especially important in the case of intermittent operation, for example, when soot is removed from the boilers. . . In the operating mode, the valve element 13 is closed, and in the non-operating mode, Open. The latter provides in idle mode cooling of the tubular zoloty sovogo slider 6 a weak stream of gas. . Compressed gas in the operating mode passes into the tubular feeder 3 through the reservoir; Vouar 12j provides a reduction ripple compressed gas. The probe 15 detects the movement of the membrane 4. The readings of the probe 15 are indicated by timer 14.. PtjeJ / 2 X UUCHACHH UU LLLU 2 -0-0 I, j. h / -7 Editor 0. Golovach Compiled by Yu.-K.V. Rosenkrantz Tehred VCHKadar; Proofreader M. Samborska Order 3416/60 Circulation 358 Subscription VNIIPI USSR State Committee according to inventions and discoveries; 113035, Moscow, Z-ZZ; Rauska Ha6, js. 4/5 Production and Printing Enterprise, Uzhgorod, st. Design, & 3
权利要求:
Claims (7) [1] 1. A LOW FREQUENCY SOUND GENERATOR, comprising a resonator made in the form of a tube open on one side and provided on the other with a lid mounted on its end, in which a tubular feeder is concentrically mounted, that, in order to increase the efficiency of sound generation, a membrane is inserted into it, which is fixed in the pipe, and a tubular slide valve mounted on a tubular feeder having through holes located around its circumference, with the possibility of axial movement along it and cross yvaniya last, with reinforced membrane 'on a tubular spool ^ slider to provide a <their own frequencies greater than the resonant frequency of the resonator, and lower than the frequency of the first harmonic generating a direct signal. [2] 2. The generator according to claim 1, on the basis of the fact that round cylindrical couplings are mounted in it, mounted on the lid and equipped with round cylindrical glass-shaped caps of a larger diameter in which they are placed. [3] 3. The generator according to claim 1, characterized in that a pipe is introduced into it by means of which the space between the membrane and the cap is connected to the space inside the pipe from its open side. [4] 4. The generator according to claim 1, wherein the pulsator is inserted into it between the membrane and the cover. . [5] 5. The generator according to claim 1, characterized in that it has a reservoir connected to a tubular feeder. [6] 6. The generator according to claim 1, characterized. the fact that a valve element connected to the tubular [7] 7. to "u and probe, membrane WITH a feeder. The generator according to claim 1, with the fact that a kinematically connected to> (I
类似技术:
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同族专利:
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引用文献:
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