Patent ID: 11899032
Assignee: LECO CORPORATION
Field: Measurement (Instruments)
Classification: CPC F  G | IPC F  G

Claim 5:
6. The molar transfer device of claim 1, wherein the valve of the valve device is a rotary valve, wherein the valve body includes a cylindrical bore in communication with the upstream gas port, the midstream gas port, and the downstream gas port, and wherein the rotary valve comprises:
a rotating cylindrical chamber positioned in the cylindrical bore so as to rotate therein, the rotating cylindrical chamber having a first port, a second port, a third port, a fourth port in communication with the first port, a fifth port in communication with the second port, and a sixth port in communication with the third port, the rotating cylindrical chamber having a first end and a second end at the opposite end of the rotating cylindrical chamber, the first, second and third ports opening at the first end and the fourth, fifth and sixth ports opening at the second end, the second end having a first annular groove in communication with the fourth port and one of the upstream gas port, the midstream gas port, and the downstream gas port regardless of the rotated position of the rotating cylindrical chamber, the second end further comprising a second annular groove in communication with the fifth port and another one of the upstream gas port, the midstream gas port, and the downstream gas port regardless of the rotated position of the rotating cylindrical chamber, the sixth port opens in a center of the second end and is in communication with yet another one of the upstream gas port, the midstream gas port, and the downstream gas port;
a first valve end cap including a first cap port extending internally to align with one of the first port, the second port, and the third port depending on the rotational position of the rotating cylindrical chamber, and a second cap port extending internally to align with another one of the first port, the second port, and the third port depending on the rotational position of the rotating cylindrical chamber, wherein the first cap port is connected to the first ballast port and the second cap port is connected to the second ballast port; and
a motor for rotating the rotating cylindrical chamber to different rotational positions in order to alter which of the first port, the second port, and the third port is aligned with the first cap port and the second cap port such that each of the first cap port and the second cap port is sequentially connected to the upstream gas port, the midstream gas port, and the downstream gas port whereby each of the first and second ballast chambers is sequentially filled with gas from the upstream gas stream, equilibrated with the midstream gas stream, and emptied into the downstream gas stream, wherein as the first ballast chamber is filled, the second ballast chamber is emptied and as the second ballast chamber is filled, the first ballast chamber is emptied.