Multi-pulse jet generator and air conditioner having same

1. A multi-pulsed jets generating apparatus comprising:

at least one actuator including at least one diaphragm, a plurality of cavities and a plurality of orifices, and being configured so that each actuator

includes at least two cavities that are contiguously arranged with a respective diaphragm separating each two adjacent cavities of the at least two cavities, and each cavity of the at least two cavities communicates with an outside of the actuator through a respective orifice, and

the actuator generates a respective pulsed jet in each respective orifice through which each cavity of the at least two cavities communicates, according to a volume change of the at least two cavities caused by vibration of the diaphragm separating each two adjacent cavities of the at least two cavities; and

a manifold, which is elongated, including

a plurality of inner passages which are contiguously arranged, and

a plurality of injection ports which include a respective multiple number of injection ports for each inner passage, and that are arranged so that the multiple number of injection ports for each inner passage are at different positions along an axis in which the manifold is elongated, or have different injection angles, than the multiple number of injection ports for an adjacent inner passage,

wherein each inner passage communicates with a respective cavity of the at least two cavities of each actuator through the respective orifice through which the respective cavity communicates, to receive the pulsed jet generated in the orifice, and generates a plurality of pulsed jets that are output through the multiple number of input ports for the inner passage, so that the manifold thereby generates multi-pulsed jets which are output through the plurality of injection ports.

2. The multi-pulsed jets generating apparatus of claim 1 , wherein the at least one actuator comprises a first actuator and a second actuator disposed on different ends of the manifold.

3. The multi-pulsed jets generating apparatus of claim 2 , wherein the first actuator and the second actuator generate pulsed jets by operating in the same phase.

4. The multi-pulsed jets generating apparatus of claim 2 , wherein the first actuator and the second actuator generate pulsed jets by operating in opposite phases.

5. The multi-pulsed jets generating apparatus of claim 2 , wherein the first actuator and the second actuator generate pulsed jets in opposite directions.

6. The multi-pulsed jets generating apparatus of claim 1 , wherein the manifold is elongated in an injection direction of the pulsed jets generated in the orifices.

7. The multi-pulsed jets generating apparatus of claim 1 , wherein the pulsed jets generated in the orifices are injected to the inner passages in the same direction.

8. The multi-pulsed jets generating apparatus of claim 1 , wherein the pulsed jets generated in the orifices are obliquely injected with respect to a lengthwise direction of the inner passage.

9. The multi-pulsed jets generating apparatus of claim 1 , wherein each actuator of the at least one actuator comprises a housing in which the at least two cavities included in the actuator are formed, and the respective diaphragm separating the at least two cavities is mounted in the housing.

10. The multi-pulsed jets generating apparatus of claim 9 , wherein

the at least one diaphragm comprises a first diaphragm and a second diaphragm,

the plurality of cavities comprise a first cavity, a second cavity, and a third cavity, and

the first cavity and the second cavity are partitioned by the first diaphragm, and volumes of the first cavity and the second cavity change by vibration of the first diaphragm, and

the second cavity and the third cavity are partitioned by the second diaphragm, and volumes of the second cavity and the third cavity change by vibration of the second diaphragm.

11. An air conditioner comprising:

a cabinet having an inhalation port and a discharge port;

at least one heat exchanger disposed in the cabinet; and

a multi-pulsed jets generating apparatus including:

at least one actuator including at least one diaphragm, a plurality of cavities and a plurality of orifices, and being configured so that each actuator

includes at least two cavities that are contiguously arranged with a respective diaphragm separating each two adjacent cavities of the at least two cavities, and each cavity of the at least two cavities communicates with an outside of the actuator through a respective orifice, and

the actuator generates a respective pulsed jet in each respective orifice through which each cavity of the at least two cavities communicates, according to a volume change of the at least two cavities caused by vibration of the diaphragm separating each two adjacent cavities of the at least two cavities, and

a manifold, which is elongated, including

a plurality of inner passages which are contiguously arranged, and

a plurality of injection ports which include a respective multiple number of injection ports for each inner passage, and that are arranged so that the multiple number of injection ports for each inner passage are at different positions along an axis in which the manifold is elongated, or have different injection angles, than the multiple number of injection ports for an adjacent inner passage,

wherein each inner passage communicates with a respective cavity of the at least two cavities of each actuator through the respective orifice through which the respective cavity communicates, to receive the pulsed jet generated in the orifice, and generates a plurality of pulsed jets that are output through the multiple number of input ports for the inner passage, so that the manifold thereby generates multi-pulsed jets which are output through the plurality of injection ports.

12. The air conditioner of claim 11 , wherein the at least one actuator comprises a first actuator and a second actuator disposed on different ends of the manifold.

13. The air conditioner of claim 12 , wherein the first actuator and the second actuator generate pulsed jets by operating in the same phase.

14. The air conditioner of claim 12 , wherein the first actuator and the second actuator generate pulsed jets by operating in opposite phases.

15. The air conditioner of claim 11 , wherein the manifold comprises a plurality of manifolds.

16. An apparatus comprising:

a first actuator including

first and second cavities that are adjacent to each other;

a first diaphragm separating the first and second cavities,

a first orifice through which the first cavity communicates to an outside of the first actuator, and

a second orifice through which the second cavity communicates to an outside of the first actuator,

wherein the first actuator is configured so that the first actuator generates a first pulsed jet in the first orifice and a second pulsed jet in the second orifice according to a volume change of the first and second cavities caused by vibration of the first diaphragm; and

a manifold, which is elongated, including

first and second inner passages that are adjacent to each other,

a first plurality of injection ports for the first inner passage, and

a second plurality of injection ports for the second inner passage, wherein

the first plurality of injection ports are at different positions along an axis in which the manifold is elongated, or have different injection angles, than the second plurality of injection ports, and

the first inner passage communicates with the first cavity through the first orifice to receive the pulsed jet generated in the first orifice, and generates a plurality of pulsed jets that are output through the first plurality of injection ports, and

the second inner passage communicates with the second cavity through the second orifice to receive the pulsed jet generated in the second orifice, and generates a plurality of pulsed jets that are output through the second plurality of injection ports,

so that the manifold thereby generates multi-pulsed jets which are output through the first and second plurality of injection ports.

17. The apparatus of claim 16 , wherein

the first actuator further comprises:

a third cavity adjacent to the second cavity,

a second diaphragm separating the second and third cavities, and

a third orifice through which the third cavity communicates to an outside of the first actuator,

wherein the first actuator is configured so that the first actuator generates a third pulsed jet in the third orifice according to a volume change of the second and third cavities caused by vibration of the second diaphragm, and

the manifold includes

a third inner passage that is adjacent to the second inner passage, and

a third plurality of injection ports for the third inner passage and that are at different positions along the axis in which the manifold is elongated, or have different injection angles, than the second plurality of injection ports,

wherein the third inner passage communicates with the third cavity through the third orifice to receive the pulsed jet generated in the third orifice, and generates a plurality of pulsed jets that are output through the third plurality of injection ports.

18. The apparatus of claim 16 , further comprising:

a second actuator including

first and second cavities that are adjacent to each other;

a first diaphragm separating the first and second cavities,

a first orifice through which the first cavity communicates to an outside of the second actuator, and

a second orifice through which the second cavity communicates to an outside of the second actuator, wherein

the second actuator is configured so that the second actuator generates a first pulsed jet in the first orifice and a second pulsed jet in the second orifice according to a volume change of the first and second cavities caused by vibration of the first diaphragm,

the first inner passage of the manifold communicates with the first cavity of the second actuator through the first orifice of the second actuator to receive the pulsed jet generated in the first orifice of the second actuator, and

the second inner passage of the manifold communicates with the second cavity of the second actuator through the second orifice of the second actuator to receive the pulsed jet generated in the second orifice of the second actuator.