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CN-116336196-B - Water-gas linkage valve and gas appliance

CN116336196BCN 116336196 BCN116336196 BCN 116336196BCN-116336196-B

Abstract

The invention relates to the technical field of gas appliances, and discloses a water-gas linkage valve and a gas appliance. The air valve assembly of the water-air linkage valve comprises an air valve body and a fire and pressure regulating structure, an air inlet cavity and an air outlet cavity are arranged in the air valve body, and the air inlet cavity is communicated with the air outlet cavity through an air passing port. The fire and pressure regulating structure is arranged at the gas passing port and comprises a valve core, a diaphragm and a regulating rod, wherein the valve core is arranged in a gas valve body, a pressure stabilizing part is arranged on the valve core, the valve core can move along the axial direction to enable the pressure stabilizing part to regulate a flow gap between the valve core and the gas passing port, the diaphragm is sleeved on the valve core, the outer end of the diaphragm is connected with the gas valve body, the diaphragm can drive the valve core to move, the regulating rod is movably arranged on the gas valve body and is connected with the valve core through a first elastic piece, and the regulating rod is used for regulating the mounting position of the regulating rod along the axial direction of the valve core so as to enable the gas outlet pressure of the gas valve assembly to continuously change between the minimum gas outlet pressure and the maximum gas outlet pressure. The water-gas linkage valve can not only ensure the constant water temperature, but also avoid the rapid cooling and the rapid heating of the water temperature.

Inventors

  • LU YUFAN
  • LIU HUA
  • YUAN JINKUI
  • ZHANG YI

Assignees

  • 广东万和热能科技有限公司

Dates

Publication Date
20260505
Application Date
20221230

Claims (9)

  1. 1. The water-gas linkage valve comprises a water valve assembly (200), a linkage valve assembly (300) and a gas valve assembly (100), wherein two ends of the linkage valve assembly (300) are respectively connected with the water valve assembly (200) and the gas valve assembly (100), and the gas valve assembly (100) is characterized in that: an air inlet cavity (111) and an air outlet cavity (112) are arranged in the air valve body (1), and the air inlet cavity (111) is communicated with the air outlet cavity (112) through an air passing port (14); The fire and pressure regulating structure is arranged at the air passing port (14) and comprises a valve core (2), a diaphragm (3) and an adjusting rod (4), wherein the valve core (2) is arranged in the air valve body (1), a pressure stabilizing part (21) is arranged on the valve core (2), the valve core (2) can move along the axial direction so that the pressure stabilizing part (21) can regulate a circulation gap between the valve core (2) and the air passing port (14), the diaphragm (3) is sleeved on the valve core (2) and the outer end of the diaphragm is connected with the air valve body (1), the diaphragm (3) can drive the valve core (2) to move, the adjusting rod (4) is movably arranged on the air valve body (1) and is connected with the valve core (2) through a first elastic piece (71), and the adjusting rod (4) is used for adjusting the mounting position of the valve core (2) along the axial direction of the valve core so that the air pressure of the air valve assembly (100) continuously changes between the minimum air outlet pressure and the maximum air outlet pressure; The fire adjusting and pressure adjusting structure further comprises a second adjusting piece (6) and a second elastic piece (72), wherein the second adjusting piece (6) is arranged at one end, far away from the adjusting rod (4), of the air valve body (1), the second adjusting piece (6) is movably connected with the air valve body (1), the second adjusting piece (6) is connected with the valve core (2) through the second elastic piece (72), the position of the second adjusting piece (6) is adjusted to enable the second elastic piece (72) to be abutted with the valve core (2), after the second elastic piece (72) is abutted with the valve core (2), the position of the second adjusting piece (6) is continuously adjusted to compress the second elastic piece (72), and the second elastic piece (72) drives the valve core (2) to move so as to adjust the position of the pressure stabilizing part (21) to enable the maximum air outlet pressure to be adjustable; The fire-regulating and pressure-regulating structure further comprises a first regulating part (5), a minimum air-out pressure limiting surface (411) is arranged along the axis direction of the regulating rod (4), the first regulating part (5) is movably connected with the air valve body (1), the first regulating part (5) comprises a first limiting surface (511), the regulating rod (4) regulates the position of the regulating rod along the axis direction of the valve core (2) so as to regulate the minimum air-out pressure, and after the minimum air-out pressure is regulated, the first regulating part (5) is moved so that the first limiting surface (511) is abutted to the minimum air-out pressure limiting surface (411).
  2. 2. The water-gas linkage valve according to claim 1, wherein a first installation channel (22) is arranged at one end of the valve core (2), the adjusting rod (4) partially extends into the first installation channel (22), and the first elastic piece (71) is connected between the valve core (2) and the adjusting rod (4).
  3. 3. The water-gas linkage valve according to claim 1, wherein the gas valve body (1) comprises a first end cover (12), the first end cover (12) is provided with first external threads, the first adjusting piece (5) comprises a first cavity (51), first internal threads are arranged in the first cavity (51), the first internal threads are in threaded engagement with the first external threads, the bottom of the first cavity (51) is provided with a first limiting surface (511), and when the position of the adjusting rod (4) along the axial direction of the valve core (2) is adjusted to the minimum gas outlet pressure, the first adjusting piece (5) is screwed so that the first limiting surface (511) is in butt joint with the minimum gas outlet pressure limiting surface (411).
  4. 4. A water-gas linkage valve according to claim 3, wherein a maximum air outlet pressure limiting surface (421) is further arranged along the axial direction of the adjusting rod (4), the maximum air outlet pressure limiting surface (421) is located on one side, close to the valve core (2), of the minimum air outlet pressure limiting surface (411), a second limiting surface (121) is arranged in the first end cover (12), the adjusting rod (4) is moved, so that the maximum air outlet pressure limiting surface (421) abuts against the second limiting surface (121), and the air outlet pressure of the air valve assembly (100) reaches the maximum air outlet pressure.
  5. 5. The water-gas linkage valve according to claim 4, wherein a second installation channel (23) is arranged at one end of the valve core (2) close to the second adjusting piece (6), the second adjusting piece (6) partially stretches into the second installation channel (23), and the second elastic piece (72) is connected between the second adjusting piece (6) and the valve core (2).
  6. 6. The water-gas linkage valve according to claim 5, wherein the valve body (1) further comprises a second end cover (13), the second end cover (13) comprises a second cavity (131), a second internal thread is arranged in the second cavity (131), the second adjusting piece (6) is arranged in the second cavity (131) and is provided with a second external thread matched with the second internal thread, the second adjusting piece (6) passes through the second cavity (131) to be connected with the second elastic piece (72), and the screw joint length of the second adjusting piece (6) and the second end cover (13) is adjusted, so that the second adjusting piece (6) can drive the second elastic piece (72) to be abutted with the valve core (2) and drive the valve core (2) to move to adjust the position of the pressure stabilizing part (21).
  7. 7. The water-gas linkage valve according to claim 4, wherein a first limiting portion (41) and a second limiting portion (42) are arranged on the adjusting rod (4) at intervals, the second limiting portion (42) is arranged between the first limiting portion (41) and the valve core (2), an end face of one end, away from the second limiting portion (42), of the first limiting portion (41) is the minimum air outlet pressure limiting face (411), and an end face of one end, away from the first limiting portion (41), of the second limiting portion (42) is the maximum air outlet pressure limiting face (421).
  8. 8. The water-gas linkage valve according to claim 7, wherein a third external thread (43) is provided on the adjusting rod (4), the third external thread (43) is provided on one side of the second limiting portion (42) away from the first limiting portion (41), a third internal thread is provided in the first end cover (12), the third external thread (43) is matched with the third internal thread, and the adjusting rod (4) is screwed to adjust the position of the adjusting rod (4) along the axial direction of the valve core (2).
  9. 9. A gas appliance comprising a water gas linkage valve as claimed in any one of claims 1 to 8.

Description

Water-gas linkage valve and gas appliance Technical Field The invention relates to the technical field of gas appliances, in particular to a water-gas linkage valve and a gas appliance. Background The gas appliances such as the gas water heater and the wall hanging stove all use gas as fuel, provide domestic hot water or heating hot water for users, generally rely on the opening and the gas pressure of the gas valve of aqueous vapor linkage valve control to provide the water of different heat loads for users. The water-gas linkage valve is provided with a pressure stabilizing valve and has a pressure stabilizing function. The valve assembly of the water-gas linkage valve in the prior art adopts the valve core to adjust big fire and small fire, and when the big hole on the valve core rotates to be right opposite to the gas channel, the gas flow is maximum, and the water heater is in a big fire state. When the small hole on the valve core rotates to be opposite to the gas channel, the gas flow is minimum, and the water heater is in a small fire state. When the valve core rotates at an angle between the big hole and the small hole, the water heater is positioned between big fire and small fire. However, when the valve core is adjusted from the big hole to the big hole and the small hole or from the big hole to the small hole, the change of the air outlet flow is discontinuous and has abrupt change, so that the water temperature has the phenomenon of quenching and rapid heating when the water-air linkage valve in the prior art adjusts the air outlet pressure. Disclosure of Invention The invention aims to provide the water-gas linkage valve which can effectively solve the problems that the water temperature is not constant due to unstable air flow of the existing water-gas linkage valve and the water temperature is suddenly cooled and suddenly heated due to sudden change in air flow adjustment, so that the air outlet pressure is stable, the water temperature is ensured to be constant, the air outlet pressure is continuously changed when the water temperature is adjusted, and the water temperature is ensured to be gradually increased or gradually decreased. The invention aims to provide a gas appliance which can effectively solve the problems of inconstant water temperature and rapid quenching and heating during water temperature adjustment of the existing gas appliance, and realize that constant water temperature is provided and the water temperature is gradually changed during water temperature adjustment. The first technical problem is solved by the following technical scheme: The water-gas linkage valve comprises a water valve assembly, a linkage valve assembly and a gas valve assembly, wherein two ends of the linkage valve assembly are respectively connected with the water valve assembly and the gas valve assembly, and the gas valve assembly comprises: The air valve body is internally provided with an air inlet cavity and an air outlet cavity, and the air inlet cavity is communicated with the air outlet cavity through an air passing port; The fire adjusting and pressure adjusting structure is arranged at the gas passing port and comprises a valve core, a diaphragm and an adjusting rod, wherein the valve core is arranged in the gas valve body, a pressure stabilizing part is arranged on the valve core, the valve core can move along the axis direction to enable the pressure stabilizing part to adjust the circulation gap between the valve core and the gas passing port, the diaphragm is sleeved on the valve core, the outer end of the diaphragm is connected with the gas valve body, the diaphragm can drive the valve core to move, the adjusting rod is movably arranged on the gas valve body and is connected with the valve core through a first elastic piece, and the adjusting rod is used for adjusting the mounting position of the adjusting rod along the axis direction of the valve core so that the gas outlet pressure of the gas valve assembly continuously changes between the minimum gas outlet pressure and the maximum gas outlet pressure. Compared with the background technology, the air valve has the following beneficial effects: According to the invention, the valve core of the air valve assembly is provided with the pressure stabilizing part, the valve core is connected with the air valve body through the diaphragm in the air valve body, the air inlet cavity in the air valve body is communicated with the air outlet cavity through the air passing port, and the valve core moves along the axial direction so that the pressure stabilizing part can adjust the circulation gap between the valve core and the air passing port. If the pressure of the air inlet is increased, the force acting on the diaphragm is increased, the diaphragm drives the valve core to move away from the air outlet cavity, and the circulation gap between the valve core and the air passing port is reduced, so that the flow of the air entering the air out