Vacuum ejector pump
AssigneeVtec Co., Ltd.
InventorHo-Young Cho
Life of this patent
Estimating the term…
Abstract
Provided is a vacuum ejector pump that operates through high-speed compressed air. The ejector pump includes an external ‘C’-shaped clip for securely fixing a casing assembled to a nozzle body, an internal fastening groove and protrusion to prevent arbitrary rotation of the casing relative to the body, and a guide groove and protrusion to indicate the assembly orientation of the body and the casing. Additionally, a check valve that is organically coupled to the body is further included. Accordingly, when using the vacuum ejector pump, the entire structure may be maintained in a robust and stable manner. As a result, vacuum leakage may be minimized.
Claims6
A vacuum ejector pump, which operates through compressed air introduced or discharged at a high speed to generate a negative pressure in an outer surrounding space, the vacuum ejector pump comprising:
- a body (11) comprising:
- a frame (14) having a structure in which an air inlet pipe (18), discs (19) and (20), and an outlet pipe (21) are sequentially spaced apart and integrally connected by a spacer (22);
- and
- nozzles (15, 16, and 17) mounted by passing through centers of the discs (19 and 20);
- a cylindrical casing (12), which has a sidewall through-hole (24) defined in a position corresponding to a flexible check valve (23) mounted on a portion of the spacer (22) and configured to accommodate the body (11) in a close contact manner so as to provide chambers (25, 26, and 27) in sections of each spacer (22), respectively;
- and
- a C-shaped clip (13) fitted into an outer circumferential surface of the inlet pipe (18) of the body (11) and having one end that presses the other end of the casing (12) supported by a hook protrusion (29) of the outlet pipe (21) toward the inlet pipe 18 so that the casing (12) is fixed in the close contact manner;
- wherein the check valve (23) is provided with a ring-shaped fixing part (23a) and a flap valve part (23b), which are integrated with each other, wherein the ring-shaped fixing part (23a) is fitted into and fixed to an annular groove defined in an outer circumferential surface of each of the discs (19 and 20), and the flap valve part (23b) extends from the fixing part (23a) and is configured to open and close the through-hole (24) by an air pressure,
- wherein the valve part (23b) is provided in a pair at left and right sides and has a groove or hole (23c) defined at a boundary with the fixing part (23a) to facilitate movement of the valve part (23b).
Dependencies are inferred from the claim text.