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CN-116816981-B - Valve device and gas water heater comprising same

CN116816981BCN 116816981 BCN116816981 BCN 116816981BCN-116816981-B

Abstract

The invention discloses a valve device and a gas water heater comprising the same, wherein the valve device comprises a valve seat, a driven valve rod, a driving valve rod, a valve pad and a tilting component, a medium outlet is arranged on the valve seat, the driven valve rod, the valve pad and the tilting component are all positioned in the valve seat, the valve pad is sealed and abutted against the medium outlet, one end of the tilting component is connected with the driving valve rod, the other end of the tilting component is connected with the edge of the valve pad, the driving valve rod extends into the valve seat, the driving valve rod moves in the valve seat and has a tilting state and an opening state, one end of the driven valve rod is connected with the valve pad, and the other end of the driven valve rod is connected with the driving valve rod in a sliding manner. The driving valve rod moves on the driven valve rod to drive the acting force of the warping component to form a gap at the edge of the valve pad, so that the pressure of medium on the upper surface and the lower surface of the valve pad is the same, and the problem that the valve is difficult to open due to overlarge back pressure is solved.

Inventors

  • ZHU HAILONG

Assignees

  • 宁波方太厨具有限公司

Dates

Publication Date
20260508
Application Date
20230728

Claims (10)

  1. 1. The valve device is characterized by comprising a valve seat, a driven valve rod, a driving valve rod, a valve pad and a tilting component, wherein the valve seat is provided with a medium outlet, the driven valve rod, the valve pad and the tilting component are all positioned in the valve seat, the valve pad is sealed and abutted against the medium outlet, one end of the tilting component is connected with the driving valve rod, the other end of the tilting component is connected with the edge of the valve pad, the driving valve rod stretches into the valve seat, the driving valve rod moves in the valve seat and has a tilting state and an opening state, one end of the driven valve rod is connected with the valve pad, and the other end of the driven valve rod is connected with the driving valve rod in a sliding manner; When the valve seat is in the tilting state, the driving valve rod moves on the driven valve rod, and the driving valve rod drives the tilting part to tilt the edge of the valve gasket so as to form a tilting opening between the valve gasket and the valve seat; In the open state, movement of the drive valve stem drives the driven valve stem and the valve pad away from the media outlet to separate the valve pad from the valve seat and open the media outlet.
  2. 2. The valve assembly of claim 1, wherein the lift member comprises a lift lever and a connecting member, the lift lever comprising a hinge portion, a connecting portion and a lift portion connected in sequence, the hinge portion being rotatably connected to the valve seat, the connecting portion being connected to one end of the connecting member, the active valve stem acting on the other end of the connecting member and driving the lift lever to swing to effect the lift portion acting on the edge of the valve pad.
  3. 3. The valve assembly of claim 2, wherein the tilting member further comprises a fixing rod, the connecting member comprises a first connecting rod and a second connecting rod hinged to each other, one end of the fixing rod is fixed in the valve seat, the other end of the fixing rod is hinged to the hinge portion, the first connecting rod is hinged to the connecting portion, the second connecting rod is hinged to the fixing rod, a four-bar mechanism is formed among the fixing rod, the tilting rod, the first connecting rod and the second connecting rod, and the active valve rod acts on the second connecting rod and drives the tilting rod to swing.
  4. 4. The valve assembly of claim 1, wherein said actuator stem moves in a direction away from said valve pad to achieve said cocked state and said open state, said valve assembly further comprising an elastic member having opposite ends acting against said valve seat and said actuator stem, respectively, to apply a force to said actuator stem in a direction toward said valve pad.
  5. 5. The valve assembly of claim 4, wherein the resilient member is a spring, the spring being disposed about the active valve stem.
  6. 6. The valve device according to claim 4, wherein the outer peripheral surface of the active valve rod has a boss portion protruding outward, the boss portion abuts against the raising member, and the elastic member is pressed between the boss portion and the valve seat.
  7. 7. The valve assembly of claim 1, wherein the end of the drive valve stem has a slot into which the follower valve stem extends and moves, the slot of the slot having an inwardly extending limit portion that abuts the follower valve stem to limit the follower valve stem from exiting the slot.
  8. 8. The valve assembly of claim 1, wherein the inner wall surface of the valve seat has an inwardly recessed relief groove, the edge of the valve seat extending into the notch of the relief groove, the rocker member extending into the relief groove.
  9. 9. The valve assembly of claim 1, wherein the rocker member is a flexible connector having one end connected to the active valve stem and the other end connected to the edge of the valve pad.
  10. 10. A gas water heater comprising a valve arrangement as claimed in any one of claims 1 to 9.

Description

Valve device and gas water heater comprising same Technical Field The invention relates to a valve device and a gas water heater comprising the same. Background With the rapid development of the economy in China, the living conditions of people are continuously improved, the market scale of the water heater is gradually increased year by year, and particularly, the gas water heater which is rapid in heating, low in price and convenient to install is widely applied and has higher requirements on the service performance. The gas valve of the existing gas water heater cannot be opened smoothly due to overlarge back pressure in the valve, so that the energy consumption is increased, and the service life of the valve is reduced. Disclosure of Invention The invention aims to overcome the defects that in the prior art, the valve cannot be opened smoothly due to overlarge back pressure of the valve, the energy consumption is increased and the service life of the valve is shortened, and provides a valve device and a gas water heater comprising the valve device. The invention solves the technical problems by the following technical scheme: the valve device is characterized by comprising a valve seat, a driven valve rod, a driving valve rod, a valve pad and a tilting component, wherein the valve seat is provided with a medium outlet, the driven valve rod, the valve pad and the tilting component are all positioned in the valve seat, the valve pad is sealed and abutted against the medium outlet, one end of the tilting component is connected with the driving valve rod, the other end of the tilting component is connected with the edge of the valve pad, the driving valve rod stretches into the valve seat, the driving valve rod moves in the valve seat and has a tilting state and an opening state, one end of the driven valve rod is connected with the valve pad, and the other end of the driven valve rod is connected with the driving valve rod in a sliding manner; When the valve seat is in the tilting state, the driving valve rod moves on the driven valve rod, and the driving valve rod drives the tilting part to tilt the edge of the valve gasket so as to form a tilting opening between the valve gasket and the valve seat; In the open state, movement of the drive valve stem drives the driven valve stem and the valve pad away from the media outlet to separate the valve pad from the valve seat and open the media outlet. In this solution, the valve gasket seals against the medium outlet, and the valve device is in a closed state, where the medium pressure inside the valve seat is greater than the medium pressure at the medium outlet, and a large force is required to open the valve device. The driving valve rod moves on the driven valve rod to drive the warping component to act on the edge of the valve pad to form a gap, and the pressure of medium on the upper surface and the lower surface of the valve pad is the same. Through the continued motion of initiative valve rod, drive driven valve rod and valve pad motion, because valve pad upper and lower surface pressure is the same this moment, solved the problem that is difficult to open the valve because of the back pressure is too big. Preferably, the tilting component comprises a tilting rod and a connecting piece, the tilting rod comprises a hinge part, a connecting part and a tilting part which are sequentially connected, the hinge part is rotatably connected in the valve seat, the connecting part is connected to one end of the connecting piece, and the acting force of the driving valve rod is in the other end of the connecting piece and drives the tilting rod to swing so as to realize that the acting force of the tilting part is in the edge of the valve pad. In this scheme, when initiative valve rod moves on driven valve rod, drive connecting portion motion, the articulated portion articulates and is fixed in the disk seat, utilizes lever principle, and initiative valve rod just can produce the required force of perk valve pad with less power this moment. Preferably, the tilting component further comprises a fixing rod, the connecting piece comprises a first connecting rod and a second connecting rod which are mutually hinged, one end of the fixing rod is fixed in the valve seat, the other end of the fixing rod is hinged to the hinge part, the first connecting rod is hinged to the connecting part, the second connecting rod is hinged to the fixing rod, a four-bar mechanism is formed between the fixing rod, the tilting rod, the first connecting rod and the second connecting rod, and the active valve rod acting force is in the second connecting rod and drives the tilting rod to swing. In this scheme, initiative valve rod effort is in the second connecting rod, and the second connecting rod articulates with first connecting rod, and first connecting rod articulates in connecting portion, drives the perk pole motion, adopts the structure of four connecting rods, and the structure is m