| 摘要 |
FIELD: personal use articles. ^ SUBSTANCE: invention refers to refrigeratory or freezing devices and can be used in household refrigerator. Sonic cold device has a body, acoustic radiation element in case, cavity produced in a case and filled with working fluid, resonator and built in regenerative chamber. Heat-exchanging apparatus are adjusted to end planes of regenerative chamber. Acoustic radiation element is built in exciting device. Resonator cavity is made of a stepped configuration with size reduction in the direction of radiator backed to every step of lead in the shape of conic frustum. Heat-exchanging apparatus is made in the shape of aluminium perforated disk. Helium - krypton is used as working environment under the pressure 2Ç3 atmorpheres. Exciter of the acoustic radiation element is characterised as ringed: voltage-controlled generator, shaping amplifier of switching pulse, phase transformer, filter, acoustic radiation element, current sensor, high-speed operational amplifier block controlled by phase detector by voltage-controlled generator. Exciter is characterised by charged power converter and charged low-energy supply. ^ EFFECT: increase of effectiveness, heat transmission rate gaining of more than 30 W and rate of temperature change of more than 30C. ^ 4 cl, 4 dwg |
