Dual venturi

Patent metadata

Field	Value
Publication number	US-12435874-B2
Application number	US-202318525913-A
Country	US
Kind code	B2
Filing date	Dec 1, 2023
Priority date	Dec 5, 2022
Publication date	Oct 7, 2025
Grant date	Oct 7, 2025

Abstract

Provided is a dual venturi. The dual venturi includes a housing including a housing body opened in a reference direction so that a gas or air flows, an inner partition wall through which an inner space of the housing body is divided into a first conduit and a second conduit, and a gas providing part provided with a first gas conduit passing through the first conduit to allow the first conduit to communicate with the outside therein and a second gas conduit configured to allow the second conduit to communicate with the outside, an opening/closing unit disposed in the inner space to open and close the first gas conduit and the second conduit, and a driver connected to the opening/closing unit to provide driving force to the opening/closing unit.

First claim

What is claimed is:

1. A dual venturi comprising:
a housing comprising a housing body opened in a reference direction, an inner partition wall through which an inner space of the housing body is divided into a first conduit and a second conduit, and a gas providing part provided with a first gas conduit passing through the first conduit to allow the first conduit to communicate with the outside of the housing and a second gas conduit configured to allow the second conduit to communicate with the outside of the housing;

an opening/closing unit disposed in the inner space of the housing body to open and close the second gas conduit and the second conduit; and
a driver connected to the opening/closing unit to provide driving force to the opening/closing unit,
wherein the second gas conduit comprises:
a (second-1)th gas conduit configured to communicate with the outside of the housing and opened and closed by the opening/closing unit; and
a (second-2)th gas conduit configured to allow the (second-1)th gas conduit to communicate with the second conduit,
wherein the opening/closing unit comprises a damper configured to control a flow of gas flowing through the second gas conduit,
wherein the damper moves in a longitudinal direction of the (second-1)th gas conduit inside the (second-1)th gas conduit by the driver to control the flow of gas,
wherein one end of the second gas conduit comprises an opening that is exposed to the outside of the housing,
the damper moves along the longitudinal direction of the (second-1)th toward the opening by the driver to open the (second-1)th gas conduit, and
the damper moves in a direction opposite to the direction facing the opening to close the (second-1)th gas conduit.

2. The dual venturi of claim 1 , wherein the (second-1)th gas conduit extends in a first direction crossing the reference direction, and
the (second-2)th gas conduit extends from one end of the (second-1)th gas conduit along a direction that is inclined to the reference direction with respect to the first direction to allow the (second-1)th gas conduit to communicate with the second conduit.

3. The dual venturi of claim 2 , wherein the first gas conduit extends in the first direction, and
the first gas conduit and the second gas conduit are sequentially disposed along the reference direction.

4. The dual venturi of claim 1 , wherein the opening/closing unit further comprises a spring disposed between the damper and the opening,
when the damper moves toward the opening, the spring is compressed, and
when the damper moves in a direction away from the opening, the compressed spring is configured to allow the damper to be in close contact with an opening/closing hole defined in the (second-1)th gas conduit by restoring force.

5. The dual venturi of claim 1 , wherein the opening/closing unit further comprises a cam assembly configured to connect the damper to the driver,
wherein the cam assembly comprises:
a cam body disposed inside the second gas conduit and the second conduit; and
a cam guide passing through the cam body to connect the damper to the driver.

6. The dual venturi of claim 5 , wherein the opening/closing unit further comprises a blade assembly coupled to the cam body,
wherein the blade assembly rotates inside the second conduit to control a flow of air flowing in the second conduit.

7. A dual venturi comprising:
a housing comprising a housing body opened in a reference direction, an inner partition wall through which an inner space of the housing body is divided into a first conduit and a second conduit, and a gas providing part provided with a first gas conduit passing through the first conduit to allow the first conduit to communicate with the outside of the housing and a second gas conduit configured to allow the second conduit to communicate with the outside of the housing;

an opening/closing unit disposed in the inner space of the housing body to open and close the second gas conduit and the second conduit; and
a driver connected to the opening/closing unit to provide driving force to the opening/closing unit,
wherein the second gas conduit comprises:
a (second-1)th gas conduit configured to communicate with the outside of the housing and opened and closed by the opening/closing unit; and
a (second-2)th gas conduit configured to allow the (second-1)th gas conduit to communicate with the second conduit,
wherein the opening/closing unit comprises a damper configured to control a flow of gas flowing through the second gas conduit,
wherein the damper moves in a longitudinal direction of the (second-1)th gas conduit inside the (second-1)th gas conduit by the driver to control the flow of gas,
wherein one end of the second gas conduit comprises an opening that is exposed to the outside of the housing,
the damper moves along the longitudinal direction of the (second-1)th toward the opening by the driver to open the (second-1)th gas conduit, and
the damper moves in a direction opposite to the direction facing the opening to close the (second-1)th gas conduit,
wherein the opening/closing unit further comprises a cam assembly configured to connect the damper to the driver,
wherein the cam assembly comprises:
a cam body disposed inside the second gas conduit and the second conduit; and
a cam guide passing through the cam body to connect the damper to the driver,
wherein the opening/closing unit further comprises a blade assembly coupled to the cam body,
wherein the blade assembly rotates inside the second conduit to control a flow of air flowing in the second conduit,
wherein the blade assembly comprises:
a blade body connected to the driver and disposed inside the second conduit; and
a wing part disposed on an outer surface of the blade body to open and close the second conduit,
the cam body comprises:
a first cam body disposed inside the second gas conduit; and
a second cam body connected to the first cam body and being in contact with the blade assembly of the opening/closing unit,
the second cam body moves in the direction facing the opening or an opposite direction by allowing the blade body to rotate by the driver so that convex portions of each of the second cam body and the blade body are in contact with each other to correspond to each other or are engaged with each other, and
the cam guide connected to the second cam body passes through the first cam body to allow the damper to move in the direction facing the opening or the opposite direction.

8. The dual venturi of claim 7 , wherein the (second-1)th gas conduit comprises:
a (second-1-1)th gas conduit having one end communicating with the outside of the housing and including the opening; and
a (second-1-2)th gas conduit having a portion communicating with the other end of the (second-1-1)th gas conduit and the other portion communicating with the (second-2)th gas conduit,
wherein the damper is disposed inside the (second-1-1)th gas conduit to cover a portion of a contact surface of the first cam body disposed inside the (second-1-2)th gas conduit.

9. The dual venturi of claim 8 , wherein an opening/closing hole through which the inside of the (second-1-1)th gas conduit and the inside of the (second-1-2)th gas conduit are connected to each other is defined in the portion of the contact surface, and
the damper is configured to cover the opening/closing hole so as to block a flow of gas flowing through the (second-1-2)th gas conduit in the (second-1-1)th gas conduit.

10. A dual venturi comprising:
a housing comprising a housing body opened in a reference direction, an inner partition wall through which an inner space of the housing body is divided into a first conduit and a seco

Assignees

• Kyungdong Navien Co Ltd

Inventors

• Lee Kyu Hong
• Lee Choong Gon
• Park Jun Kyu

Classifications

• F23N2237/10

  High or low fire · CPC title

• F23N2235/24

  Valve details · CPC title

• F23D14/60 Primary

  Devices for simultaneous control of gas and combustion air · CPC title

• F23D14/62

  Mixing devices; Mixing tubes · CPC title

• F23D14/04

  induction type, e.g. Bunsen burner · CPC title