FIELD: acoustics.
SUBSTANCE: disclosed is method of dynamic sirens power increase. It is characterised by that rotor of horn is made in form of hollow cylinder between walls of which there are blades, front edges of which are oriented in direction of rotor rotation. Converging peripheral surface of blades, base and walls of the rotor form inter blade space and rotor.
EFFECT: working medium flow coming from external blower (pump) or internal centrifugal wheel, is directed towards rotor rotation, and enters inter blade space with sum and average flow velocity vectors tangent rotation speed of rotor openings.
6 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| ALERTER | 2007 |
|
RU2351994C1 |
| SINGLE-TONE SIREN FOR COUNTER-PROPAGATING WAVES | 2009 |
|
RU2408439C1 |
| MULTITONE HARMONIC HORN OF BACK WAVES | 2009 |
|
RU2395349C1 |
| 0 |
|
SU521594A1 | |
| SIREN-DISPERSANT | 2007 |
|
RU2351406C1 |
| ACOUSTIC GENERATOR | 0 |
|
SU1760539A1 |
| SIREN OF OPPOSITE RESONANT WAVES PICKED UP FROM SINGLE ROTOR, WHICH IS HOMOGENEOUS IN LENGTH | 2008 |
|
RU2361683C1 |
| COMPRESSOR FAN STAGE (VERSIONS) | 2005 |
|
RU2294461C1 |
| REVERSIBLE CROSS-FLOW FAN | 2001 |
|
RU2205987C1 |
| METHOD OF FORMING REACTIVE FORCES OF MOTION FROM AIR-DYNAMIC PART OF JET AND DEVICE FOR REALIZATION OF THIS METHOD | 2016 |
|
RU2641178C1 |
