Ejector Mixer
AssigneeCarrier Corporation
InventorsMiad Yazdani, Abbas A. Alahyari, Thomas D. Radcliff, Parmesh Verma
Life of this patent
Estimating the term…
Abstract
An ejector (200; 300; 400; 600) has a primary inlet (40), a secondary inlet (42), and an outlet (44). A primary flowpath extends from the primary inlet to the outlet. A secondary flowpath extends from the secondary inlet to the outlet. A mixer convergent section (114) is downstream of the secondary inlet. A motive nozzle (100) surrounds the primary flowpath upstream of a junction with the secondary flowpath. The motive nozzle has an exit (110). The mixer has a downstream divergent section down-stream of the convergent section and having a divergence half angle of 0.1-2.0 over a first span of at least 3.0 times a minimum diameter of the mixer.
Claims17
An ejector (200;
- 300;
- 400;
- 600) comprising:
- a primary inlet (40);
- a secondary inlet (42);
- an outlet (44);
- a primary flowpath from the primary inlet to the outlet;
- a secondary flowpath from the secondary inlet to the outlet;
- a mixer having a convergent section (204) downstream of the secondary inlet;
- a diffuser downstream of the mixer;
- and
- a motive nozzle (100) surrounding the primary flowpath upstream of a junction with the secondary flowpath and having an exit (110),
- wherein:
- the mixer comprises a downstream divergent section (206) downstream of the convergent section and having a divergence half angle (θ2) of 0.1-2.0° over a first span of at least 3.0 times a minimum diameter (DMIN) of the mixer;
- and
- the diffuser has a divergence half angle of greater than 2.0° over a span of at least 3.0 times the minimum diameter of the mixer.
(canceled)
An ejector comprising:
- a primary inlet (40);
- a secondary inlet (42);
- an outlet (44);
- a primary flowpath from the primary inlet to the outlet;
- a secondary flowpath from the secondary inlet to the outlet;
- a convergent section (114) downstream of the secondary inlet;
- a motive nozzle (222) surrounding the primary flowpath upstream of a junction with the secondary flowpath and having:
- a throat (106);
- and
- an exit (110);
- and
- means for limiting efficiency sensitivity to off-design operating conditions.
Dependencies are inferred from the claim text.