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US 2004/0055653 A1Published application
Water flow control valve
AssigneeWahler Metalurgica Ltda
InventorJoao Jose Cardinali Ieda
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AssigneeWahler Metalurgica Ltda
InventorJoao Jose Cardinali Ieda
Estimating the term…
Used in the automobile industry, and more specifically in the driver's cab heating system, the valve is installed between the link between the engine and the radiator and the cab's heating system. It consists of a housing unit (1) which has a circular compartment (2) which houses the rotor (25) which has a side wall which protrudes a few millimeters (28) and has attached to it, by means of an “8”-shaped lever (36), a sealing unit, consisting of an O ring (33) and its support (34). This sealing unit and the side wall (28) are responsible for blocking off the flow of liquid to the cab's heating system and the by-pass, respectively. The previously mentioned compartment has a tubular inlet (3) and outlet (5) and is attached by a linking channel (14) to the adjacent cavity (10), to which is attached an outlet tube (11) and a return opening (13) and the rotor (25) is operated manually by means of an external lever (42).
The WATER FLOW CONTROL VALVE used in the automobile industry, or more precisely in the driver's cab heating system, is installed between the link between the engine and the radiator and the vehicle cab's heating system. It is characterized as consisting of a unit (1) in which there is a circular compartment (2) made for housing a rotor (25) and to which is attached an inlet tube (3) and on the other side an outlet tube (5). In the bottom of the housing unit there is a central hole (6) which extends via a short external pipe (7), also a cavity for the upper guide (8) and a metal strip or upper top. There is also an adjacent cavity (10) to which is linked a an outlet tube extension, opposite which there is a return inlet. The compartment (2) is linked to the adjacent cavity (10) by means of a linking channel for auxiliary flow or the by-pass of liquid. Both the compartment (2) and the adjacent cavity (10) have their respective covers (15 and 16), with clamps (17 and 18), cover (15) having on its inner surface two concentric circular walls, the middle one (19) for helping in the centralization of the rotor when it is being assembled and the intermediate one (20), which as it is at some distance from the edge of the cover provides a space for fitting the compartment (2) opening, with the help of a sealing ring (22). On the edge of this intermediate wall (20) is a protuberance which forms a metal strip or upper top (23).
2) The WATER FLOW CONTROL VALVE, in accordance with claim (1), is characterized as housing, inside a compartment (2), a rotor (25) which consists of two disc-shaped end elements (26), joined by a lateral wall (28) which protrudes a few millimeters, the inner surface of which has several fins which are at different levels across and opposite this lateral wall (28). These same end elements (26) have a part cut out of them (30) which are joined on the bottom edges by a vertical strip (31) to which has been soldered a sectional-shaped, lengthwise piece which goes to make up the fixing system (32) for attaching the sealing unit, which consists of an O ring (33) and its support (34). Together with the side wall, these form the means by which the flow of liquid is blocked from entering the vehicle cab's heating system. This same fixing system (32) also has a housing (35) which contains part of the “8”-shaped lever (36), part of which has extending ends (37) for fixing into and moving within the upper (8) and lower (24) guide cavities. On the top of the rotor (25) there is also a stout, axle-like pin (40) with a square extension (41) This pin passes through the central hole (6) in such a way as to expose the square extension (41), to which is attached a manually operated lever (42). The lower part of the rotor (25) has a small tubular extension (43) which, when assembling the interior of the compartment (2), is fitted by means of a screwing motion to the circular central wall (19) of the cover (15).
Dependencies are inferred from the claim text.