CN111140672B

CN111140672B - Gas circuit control valve structure of front pipe of water heater

Info

Publication number: CN111140672B
Application number: CN201811312251.8A
Authority: CN
Inventors: 秦刚; 涂磊; 杨开明
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2018-11-06
Filing date: 2018-11-06
Publication date: 2021-07-16
Anticipated expiration: 2038-11-06
Also published as: CN111140672A

Abstract

A gas circuit control valve structure of a front pipe of a water heater comprises a front pipe (100) and a valve component (10) arranged on a gas inlet hole (101) of the front pipe (100), and is characterized in that the front pipe (100) is provided with at least two gas cavities, the gas inlet hole (101) is arranged corresponding to each gas cavity, and each gas inlet hole (101) is arranged around a circle center; the valve component (10) comprises a sleeve component (2), a pushing component (3), a rotating component (4), a spring and an electromagnetic valve. Through the cooperation realization of single solenoid valve to the magnetism of pushing away the piece and to the cycle control of a plurality of air cavitys, reduced solenoid valve quantity, the internal line arranges also simpler with the interface setting, and the cost is realized reducing, again because the reduction of circuit and interface, fail safe nature improves greatly.

Description

Gas circuit control valve structure of front pipe of water heater

Technical Field

The invention relates to a component of a gas water heater, in particular to a control valve structure of a front pipe gas circuit of the water heater.

Background

The gas water heater generally comprises a burner, a heat exchanger, an air draft assembly, a smoke collecting hood and an air exhaust assembly, wherein a gas distribution device (also called a front pipe or a distributor) is further arranged between a gas inlet end and the burner, the gas distribution device is provided with a plurality of independent gas cavities, and each gas cavity is provided with an electromagnetic valve so as to control the firepower and further meet the requirement of adjusting the water temperature in each season.

Each air cavity is provided with an independent electromagnetic valve, and the independent line connection is adopted to be connected with the respective interface of the electric control board.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a front pipe gas circuit control valve structure of a water heater, which realizes the regulation and control of all gas cavities through one valve component, aiming at the technical current situation.

The technical scheme adopted by the invention for solving the technical problems is as follows: a structure of a gas circuit control valve of a front pipe of a water heater comprises a front pipe and a valve component arranged on a gas inlet hole of the front pipe, and is characterized in that the front pipe is provided with at least two gas cavities, a gas inlet hole is arranged corresponding to each gas cavity, and each gas inlet hole is arranged around the same circle center; the valve assembly comprises

The sleeve is formed with a circle of first helical teeth around the front port;

the pushing piece can be axially and slidably arranged in the sleeve piece, and the front end of the pushing piece is formed with ring teeth;

the rear end of the rotating piece is provided with a second helical tooth which is in contact with the annular tooth for guiding so as to realize indexing rotation, the radial outer end face of the second helical tooth protrudes out of the radial outer end face of the annular tooth, so that the second helical tooth can slide along the first helical tooth in a single direction and is limited in the first helical tooth, the rotating piece is provided with at least two plugs which are in open-close fit with the air inlet holes, and the plugs are radially arranged around a circle center;

the spring always forces the rotating piece to approach the sleeve; and

the electromagnetic valve is matched with the pushing piece in a magnetic attraction mode, and the pushing piece can be driven by the pushing piece to move towards the direction far away from the sleeve piece in a magnetic attraction mode in the power-on state.

In order to make the valve assembly as a whole assemble and disassemble as a module, the valve assembly also comprises a shell which comprises

The front end of the cylinder is open, a central hole and an adaptive hole corresponding to the air inlet are formed in the bottom surface of the cylinder, the central hole is used for the rotating piece to be arranged, and the adaptive hole is arranged around the central hole;

the rear end cover is arranged at the rear end of the cylinder body and forms a first installation cavity with the outer wall of the bottom surface of the cylinder body, and the sleeve piece and the pushing piece are arranged in the first installation cavity; and

the front end cover is arranged on the front end opening of the barrel and forms a second mounting cavity with the barrel, and the plug is located in the second mounting cavity.

Furthermore, a through hole is formed in the middle of the front end cover, the electromagnetic valve is arranged at the outer end of the through hole, the spring penetrates through the through hole, the front end of the spring abuts against the electromagnetic valve, and the rear end of the spring abuts against the rotating piece.

In consideration of the acting force of the electromagnetic valve on the pushing piece, the rotating piece is provided with a guide hole, and a rod part is axially and convexly arranged in the middle of the pushing piece and penetrates through the guide hole and is close to the arrangement of the electromagnetic valve.

The plug can be arranged in the following way: the rotating member is the tube-shape, the skewed tooth of second arrange in the outer wall of rotating member rear end, radial outside extension is equipped with two at least linking arms on the front end outer wall of rotating member, is equipped with on every linking arm the end cap.

The sleeve is integral with the rear end cap in view of ease of manufacture and component strength.

In order to ensure that the pushing piece can move axially without rotating, the inner wall of the sleeve piece is provided with an axial sliding groove, and correspondingly, the peripheral wall of the pushing piece is convexly provided with a convex strip matched with the axial sliding groove.

Preferably, the number of the air cavities is three, correspondingly, the number of the plugs is also three, and the three plugs are all spaced at an angle of 60 degrees.

Compared with the prior art, the invention has the advantages that: through the cooperation realization of single solenoid valve to the magnetism of pushing away the piece and to the cycle control of a plurality of air cavitys, reduced solenoid valve quantity, the internal line arranges also simpler with the interface setting, and the cost is realized reducing, again because the reduction of circuit and interface, fail safe nature improves greatly.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment.

Fig. 2 is an exploded assembly view of fig. 1.

Fig. 3 is an enlarged view of the barrel of fig. 2 from another perspective.

Fig. 4 is an enlarged view of the rotating member of fig. 2 from another perspective.

Fig. 5 is an initial state view of the valve assembly.

FIG. 6 is a state diagram of the valve assembly after the solenoid is energized.

FIG. 7 is a state diagram of the valve assembly after the solenoid is de-energized.

Fig. 8 is a final state view of the valve assembly.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 and fig. 2, the air passage control valve structure of the front pipe of the water heater in this embodiment includes a front pipe 100 and a valve assembly 10 disposed on an air inlet 101 of the front pipe 100, the front pipe 100 has three air chambers, an air inlet 101 is opened corresponding to each air chamber, and each air inlet 101 is disposed around the same center of circle.

The valve assembly 10 comprises a sleeve 2, a pushing piece 3, a rotating piece 4, a spring 5, a solenoid valve 6 and a shell 1, wherein the sleeve 2 is formed with a circle of first helical teeth 21 around a front port. The pushing piece 3 is arranged in the sleeve piece 2 in an axially sliding manner, and the front end of the pushing piece is formed with a ring gear 31; the middle part of the pushing part 3 is provided with a rod part 33 in an axial direction in a protruding mode, the rod part 33 penetrates through the guide hole 44 and is close to the arrangement of the electromagnetic valve 6, and the rod part 33 is made of iron or other magnetic materials so as to be capable of achieving magnetic attraction with the electromagnetic valve.

The rear end of the rotating member 4 is formed with a second helical tooth 41 which is in contact with the ring tooth 31 for guiding to realize indexing rotation, the radial outer end face of the second helical tooth 41 protrudes out of the radial outer end face of the ring tooth 31, so that the second helical tooth 41 can slide along the first helical tooth 21 in a single direction and is limited in the first helical tooth 21, the rotating member 4 is provided with three plugs 42 which are in open-close fit with the air inlet hole 101, the three plugs 42 are radially arranged around a circle center, and the interval angles of the three plugs 42 are all 60 degrees. Referring to fig. 3, the rotating member 4 has a guiding hole 44, the rotating member 4 in this embodiment has a cylindrical shape, the second helical tooth 41 is disposed on an outer wall of the rear end of the rotating member 4, three connecting arms 43 extend radially outward from an outer wall of the front end of the rotating member 4, and each connecting arm 43 is provided with a plug 42.

The spring 5 always forces the rotating piece 4 to approach the sleeve 2; the electromagnetic valve 6 is matched with the pushing piece 3 in a magnetic attraction manner, and the pushing piece 3 can be driven by the pushing piece 3 to move towards the direction far away from the sleeve piece 2 by the magnetic attraction manner in the power-on state.

The housing 1 includes a barrel 11, a rear end cap 12 and a front end cap 13, as shown in fig. 4, the front end of the barrel 11 is open, a central hole 111 and an adaptive hole 112 corresponding to the air inlet 101 are opened on the bottom surface, the central hole 111 is provided for the rotating member 4, and the adaptive hole 112 is disposed around the central hole 111.

The rear end cover 12 is arranged at the rear end of the cylinder body 11 and forms a first installation cavity with the outer wall of the bottom surface of the cylinder body 11, and the sleeve member 2 and the pushing member 3 are arranged in the first installation cavity. The sleeve 2 in this embodiment is integral with the rear end cap 12.

The front end cover 13 is arranged on the front end opening of the barrel 11 and forms a second installation cavity with the barrel 11, and the plug 42 is located in the second installation cavity. The middle part of the front end cover 13 is provided with a through hole 131, the outer end of the through hole 131 is provided with an electromagnetic valve 6, a spring 5 penetrates through the through hole 131, the front end of the through hole abuts against the electromagnetic valve 6, and the rear end of the through hole abuts against the rotating piece 4.

In order to ensure that the pushing element can move axially without rotating, the inner wall of the sleeve 2 is provided with an axial sliding groove 22, and correspondingly, the outer peripheral wall of the pushing element 3 is convexly provided with a convex strip 32 matched with the axial sliding groove 22.

Referring to fig. 5, in an initial state, the solenoid valve is not energized, the pushing member is pressed down under the action of the spring, and the plugs block the corresponding air inlets respectively; referring to fig. 6, when the solenoid valve is powered on, the rod part is attracted by the solenoid valve to drive the pushing part 3, and meanwhile, the pushing part pushes the rotating part, at this time, the second helical teeth slide down along the annular tooth surface of the pushing part under the action of the elastic force of the spring and rotate for a small angle; as shown in fig. 7, when the electromagnetic valve is powered off, the pushing member loses the adsorption force, and the second helical tooth is pressed on the first helical tooth and slides down obliquely under the action of the spring, so that the unidirectional rotation and the axial translation of the rotating member are realized; finally, as shown in fig. 8. One on-off operation of the electromagnetic valve realizes that the rotating piece rotates by 60 degrees, and one air inlet hole is opened. This operation can be cycled to open a different number of air holes.

Claims

1. A gas circuit control valve structure of a front pipe of a water heater comprises a front pipe (100) and a valve component (10) arranged on a gas inlet hole (101) of the front pipe (100), and is characterized in that the front pipe (100) is provided with at least two gas cavities, the gas inlet hole (101) is arranged corresponding to each gas cavity, and each gas inlet hole (101) is arranged around the same circle center; the valve assembly (10) comprises

A sleeve (2) formed with a ring of first helical teeth (21) around the front port;

the pushing piece (3) is axially slidably arranged in the sleeve piece (2), and the front end of the pushing piece is formed with a ring gear (31);

the rear end of the rotating piece (4) is provided with a second helical tooth (41) which is in contact with the ring tooth (31) for guiding so as to realize indexing rotation, the radial outer end face of the second helical tooth (41) protrudes out of the radial outer end face of the ring tooth (31), so that the second helical tooth (41) can slide along the first helical tooth (21) in a single direction and is limited in the first helical tooth (21), the rotating piece (4) is provided with at least two plugs (42) which are in open-close fit with the air inlet holes (101), and the plugs (42) are radially arranged around a circle center;

a spring (5) which always forces the rotating member (4) to approach the sleeve member (2); and

and the electromagnetic valve (6) is matched with the pushing piece (3) in a magnetic attraction manner, and can magnetically attract the pushing piece (3) in a power-on state so that the pushing piece (3) drives the rotating piece (4) to move towards the direction far away from the sleeve piece (2).

2. The structure of the air passage control valve for the head pipe of the water heater according to claim 1, wherein the valve assembly (10) further comprises a housing (1), and the housing (1) comprises

The front end of the cylinder body (11) is opened, the bottom surface of the cylinder body is provided with a central hole and an adaptive hole corresponding to the air inlet hole (101), the central hole is used for arranging the rotating piece (4), and the adaptive hole is arranged around the central hole;

the rear end cover (12) is arranged at the rear end of the cylinder body (11) and forms a first installation cavity with the outer wall of the bottom surface of the cylinder body (11), and the sleeve member (2) and the pushing member (3) are arranged in the first installation cavity; and

the front end cover (13) is arranged on the front end opening of the barrel body (11) and forms a second installation cavity with the barrel body (11), and the plug (42) is located in the second installation cavity.

3. The air passage control valve structure of the front pipe of the water heater according to claim 2, characterized in that a through hole (131) is opened in the middle of the front end cover (13), the electromagnetic valve (6) is arranged at the outer end of the through hole (131), the spring (5) is arranged in the through hole (131) in a penetrating manner, the front end of the spring abuts against the electromagnetic valve (6), and the rear end of the spring abuts against the rotating member (4).

4. The air passage control valve structure of the front pipe of the water heater according to claim 3, characterized in that the rotating member (4) is provided with a guide hole (44), a rod part (33) is axially protruded at the middle part of the pushing member (3), and the rod part (33) penetrates through the guide hole (44) and is close to the arrangement of the electromagnetic valve (6).

5. The air passage control valve structure of the front pipe of the water heater according to claim 4, wherein the rotating member (4) is cylindrical, the second helical teeth (41) are arranged on the outer wall of the rear end of the rotating member (4), at least two connecting arms (43) extend radially outwards on the outer wall of the front end of the rotating member (4), and each connecting arm (43) is provided with the plug (42).

6. The gas circuit control valve structure of the front pipe of the water heater according to claim 2, characterized in that the sleeve (2) and the rear end cover (12) are a single piece.

7. The structure of the air passage control valve of the front pipe of the water heater according to claim 1, characterized in that the inner wall of the sleeve (2) is provided with an axial sliding groove (22), and correspondingly, the outer peripheral wall of the pushing piece (3) is convexly provided with a convex strip (32) matched with the axial sliding groove (22).

8. The air passage control valve structure of the front pipe of the water heater according to claim 1, characterized in that the number of the air chambers is three, correspondingly, the number of the plugs (42) is three, and the three plugs (42) are all spaced at an angle of 60 °.