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US 11,808,453 B2Granted
Gas mixing device and gas water heating device
AssigneeA.O. Smith Corporation
InventorsYanli Duan, Ziwen Fu, Xin Cao
Life of this patent
Estimating the term…
Abstract
A gas-mixing device includes: a shell, where the shell is provided with an air channel for conveying air, a fuel gas channel for conveying fuel gas, and a mixing-gas channel connecting downstream of the air channel and the fuel gas channel. The fuel gas channel includes a first sectional flow area and the air channel includes a second section flow area; which are located on the movable part of the shell. The movable part is provided with a flexible separation component which hermetically separates the air channel and the fuel gas channel. The movable part penetrates through the flexible separation component and enters the air channel and the fuel gas channel and performs a movement to change the first and second sectional flow area.
Claims20
A gas-mixing device, comprising:
- a shell, wherein the shell is provided with an air channel for conveying air, a fuel gas channel for conveying fuel gas, and a mixing-gas channel communicating with lower reaches of the air channel and the fuel gas channel, wherein the fuel gas channel comprises a first cut-off portion having a changable flow area and the air channel comprises a second cut-off portion having a changeable flow area;
- a movable mechanism arranged in the shell, and
- a flexible separation component which separates the air channel and the fuel gas channel,
- wherein the movable mechanism penetrates through the flexible separation component and enters the air channel and the fuel gas channel and performs a motion to change the flexible area of the first cut-off portion and the flow area of the second cut-off portion, and the flexible separation component is able to deform as the movable mechanism performs the motion,
- wherein the movable mechanism comprises an air cut-off plate which is driven to move axially, a fuel gas valve core, and a linkage rod, wherein the linkage rod connects with the air cut-off plate and the fuel gas valve core so as to link the fuel gas valve core and the air cut-off plate, and
- wherein the linkage rod and the fuel gas valve core are connected via a connecting spring.
3 more elements
A gas-mixing device, comprising:
- a shell, wherein the shell is provided with an air channel for conveying air, a fuel gas channel for conveying fuel gas, and a mixing-gas channel communicating with lower reaches of the air channel and the fuel gas channel, wherein the fuel gas channel comprises a first cut-off portion having a changable flow area and the air Channel comprises a second cut-off portion having a changeable flow area;
- a movable mechanism arranged in the shell, and
- a flexible separation component which separates the air channel and the fuel gas channel,
- wherein the movable mechanism penetrates through the flexible separation component and enters the air channel and the fuel gas channel and performs a motion to change the flexible area of the first cut-off portion and the flow area of the second cut-off portion, and the flexible separation component is able to deform as the movable mechanism performs the motion,
- wherein the movable mechanism comprises an air cut-off plate which is driven to move axially, a fuel gas valve core, and a linkage rod, wherein the linkage rod connects with the air cut-off plate and the fuel gas valve core so as to link the fuel gas valve core and the air cut-off plate, and
- wherein an air valve port is provided in the air channel, the air cut-off plate has an air blocking position to block the air valve port, wherein in response to the air cut-off plate being located at the air blocking position, the gas-mixing device also includes a first connection portion which communicates the air channel located at lower reach of the air valve port with the air channel located at upper reach of the air valve port.
3 more elements
A gas-mixing device, comprising:
- a shell, wherein the shell is provided with an air channel for conveying air, a fuel gas channel for conveying fuel gas, and a mixing-gas channel communicating with lower reaches of the air channel and the fuel gas channel, wherein the fuel gas channel comprises a first cut-off portion having a changable flow area and the air Channel comprises a second cut-off portion having a changeable flow area;
- a movable mechanism arranged in the shell, and
- a flexible separation component which separates the air channel and the fuel gas channel,
- wherein the movable mechanism penetrates through the flexible separation component and enters the air channel and the fuel gas channel and performs a motion to change the flexible area of the first cut-off portion and the flow area of the second cut-off portion, and the flexible separation component is able to deform as the movable mechanism performs the motion,
- wherein the movable mechanism comprises an air cut-off plate which is driven to move axially, a fuel gas valve core, and a linkage rod, wherein the linkage rod connects with the air cut-off plate and the fuel gas valve core so as to link the fuel gas valve core and the air cut-off plate, and
- wherein a fuel gas valve port is provided in the fuel gas channel, the fuel gas valve core has a fuel gas blocking position at which the fuel gas valve port is blocked, wherein in response to the fuel gas valve core being located at the fuel gas blocking position, the gas-mixing device also includes a connection portion which communicates the fuel gas channel located at lower reach of the fuel gas valve port with the fuel gas channel located at upper reach of the fuel gas valve port.
3 more elements
Dependencies are inferred from the claim text.