阅读说明：本技术 进水接头及包含其的燃气热水器 (Water inlet joint and gas water heater comprising same ) 是由 王雲涛 朱海龙 魏苗苗 于 2021-01-12 设计创作，主要内容包括：本发明公开了一种进水接头及包含其的燃气热水器。该进水接头包括：外壳以及设于外壳内部的第一阀塞、第二阀塞、第一磁性组、第二磁性组和联结构件；第一磁性组分别设于第一阀塞和第一阀座,并使得第一阀塞和第一阀座相互靠近；第二磁性组分别设于第二阀塞和第二阀座,并使得第二阀塞和第二阀座相互远离；联结构件连接于第一阀塞和第二阀塞,并将第一阀塞的远离第一阀座的动作转化为第二阀塞的靠近第二阀座的动作。如果流体入口侧的流体压力过大,则会带动第一阀塞远离第一阀座,从而导致第二阀塞靠近第二阀座,从而最终封闭流体通道,使得流体出口侧的流体压力不会超过阈值。(The invention discloses a water inlet joint and a gas water heater comprising the same. This water supply connector includes: the valve comprises a shell, a first valve plug, a second valve plug, a first magnetic group, a second magnetic group and a coupling member, wherein the first valve plug, the second valve plug, the first magnetic group, the second magnetic group and the coupling member are arranged in the shell; the first magnetic group is respectively arranged on the first valve plug and the first valve seat, and enables the first valve plug and the first valve seat to be close to each other; the second magnetic group is respectively arranged on the second valve plug and the second valve seat, and enables the second valve plug and the second valve seat to be far away from each other; the coupling member is coupled to the first valve plug and the second valve plug and translates movement of the first valve plug away from the first valve seat into movement of the second valve plug toward the second valve seat. If the fluid pressure on the fluid inlet side is too high, it will pull the first valve plug away from the first valve seat, causing the second valve plug to approach the second valve seat, eventually closing the fluid passage so that the fluid pressure on the fluid outlet side will not exceed the threshold value.)

1. A water inlet joint, characterized in that it comprises: the valve comprises a shell, a first valve plug, a second valve plug, a first magnetic group, a second magnetic group and a coupling member, wherein the first valve plug, the second valve plug, the first magnetic group, the second magnetic group and the coupling member are arranged in the shell;

the housing having a fluid inlet, a fluid outlet, and a fluid passageway;

the first valve plug is abuttable with a first valve seat of a fluid inlet side within the housing to close the fluid passage;

the second valve plug is abuttable with a second valve seat of a fluid outlet side inside the housing to close the fluid passage;

the first magnetic component is respectively arranged on the first valve plug and the first valve seat, and enables the first valve plug and the first valve seat to be close to each other;

the second magnetic group is respectively arranged on the second valve plug and the second valve seat, and enables the second valve plug and the second valve seat to be far away from each other;

the coupling member is coupled to the first valve plug and the second valve plug and translates movement of the first valve plug away from the first valve seat into movement of the second valve plug toward the second valve seat.

2. The water inlet joint as recited in claim 1 wherein the coupling member comprises a gear rotating about a fixed axis and first and second racks engaged with opposite sides of the gear, respectively, the first rack being connected to the first valve plug and the second rack being connected to the second valve plug.

3. The water inlet joint of claim 2, wherein the first valve plug moves a predetermined distance in a second direction away from the first valve seat to push against the first rack.

4. The water inlet joint as recited in claim 3 wherein a sleeve is disposed at an end of the first rack adjacent to the first valve plug, and a first valve stem is disposed at an end of the first valve plug adjacent to the first rack, the valve stem being inserted into the sleeve.

5. The water inlet joint as claimed in claim 4, wherein the sleeve has a first position-limiting portion and a second position-limiting portion disposed along the second direction on an inner wall thereof, and an end of the valve stem away from the first valve seat is capable of freely moving between the first position-limiting portion and the second position-limiting portion.

6. The water inlet joint of claim 1, wherein the first valve plug is a tapered structure that converges toward a first direction proximate the first valve seat.

7. The water inlet joint as recited in claim 1 wherein one or more sliding rods are fixed to an outer peripheral side of the second valve plug, the sliding rods are slidably inserted into the second valve seat, and the second magnetic assembly is a spring and is disposed between the second valve plug and the second valve seat in a compressed state.

8. The water inlet joint of claim 7, wherein a third limiting portion is disposed in the housing and is disposed on a fluid outlet side of the second valve plug to limit movement of the second valve plug in a second direction away from the second valve seat.

9. The water intake joint of claim 1, wherein the coupling member includes a first gear and a second gear that rotate about a fixed axis, and a first rack that is engaged with the first gear and a second rack that is engaged with the second gear, the first gear and the second gear rotate synchronously, and a pitch diameter of the second gear is larger than a pitch diameter of the first gear.

10. The water inlet joint of claim 1, wherein the first magnetic group comprises two first magnets that attract each other; the second magnetic group includes two second magnets that repel each other.

11. A gas water heater characterized in that it comprises a water inlet joint according to any one of claims 1-10.

Technical Field

The invention relates to the field of water heaters, in particular to a water inlet joint and a gas water heater comprising the same.

Background

Along with the increasing occupation ratio of the gas water heater in the market, the problems are more and more, for example, the water pressure fluctuation causes the continuous fluctuation of the water flow, so that the user is not good in experience; and when the water pressure of the water inlet joint is too high, the water pipe can be burst, so that the life safety and property loss are caused to users.

Disclosure of Invention

The invention aims to overcome the defect that water pipes are fractured due to overlarge water pressure in a water inlet joint in the prior art, and provides the water inlet joint capable of avoiding the overlarge pressure and the gas water heater comprising the water inlet joint.

The invention solves the technical problems through the following technical scheme:

a water inlet fitting, comprising: the valve comprises a shell, a first valve plug, a second valve plug, a first magnetic group, a second magnetic group and a coupling member, wherein the first valve plug, the second valve plug, the first magnetic group, the second magnetic group and the coupling member are arranged in the shell;

the housing having a fluid inlet, a fluid outlet, and a fluid passageway;

the first valve plug is abuttable with a first valve seat of a fluid inlet side within the housing to close the fluid passage;

the second valve plug is abuttable with a second valve seat of a fluid outlet side inside the housing to close the fluid passage;

the first magnetic component is respectively arranged on the first valve plug and the first valve seat, and enables the first valve plug and the first valve seat to be close to each other;

the second magnetic group is respectively arranged on the second valve plug and the second valve seat, and enables the second valve plug and the second valve seat to be far away from each other;

the coupling member is coupled to the first valve plug and the second valve plug and translates movement of the first valve plug away from the first valve seat into movement of the second valve plug toward the second valve seat.

In this solution, if the fluid pressure on the fluid inlet side is too high, the first valve plug is driven away from the first valve seat, so that the second valve plug is close to the second valve seat, thereby finally closing the fluid passage, so that the fluid pressure on the fluid outlet side does not exceed the threshold value.

Preferably, the coupling member includes a gear rotating about a fixed shaft, and first and second racks respectively engaged with opposite sides of the gear, the first rack being connected to the first valve plug, and the second rack being connected to the second valve plug.

In the scheme, the linkage between the first valve plug and the second valve plug is realized through the meshing of the gear and the rack.

Preferably, the first valve plug moves a predetermined distance in a second direction away from the first valve seat to push against the first rack.

In this embodiment, the first valve plug moves the first rack in the second direction by a predetermined distance, so that the fluid pressure is kept at a fixed value before the threshold value.

Preferably, one end of the first rack close to the first valve plug is provided with a sleeve, one end of the first valve plug close to the first rack is provided with a first valve rod, and the valve rod is inserted into the sleeve.

In this scheme, through the cup joint of sleeve and valve rod realize moving behind the predetermined distance in the first direction just the top move first rack.

Preferably, the inner wall of the sleeve is provided with a first limiting part and a second limiting part which are arranged along the first direction, and the end part of the valve rod, which is far away from the first valve seat, can freely move between the first limiting part and the second limiting part.

Preferably, the first valve plug is a tapered structure, and the first valve plug converges toward a first direction near the first valve seat.

Preferably, one or more sliding rods are fixed to the outer peripheral side of the second valve plug, the sliding rods are slidably inserted into the second valve seat, and the second magnetic group is a spring, sleeved on the sliding rods, and arranged between the second valve plug and the second valve seat in a compressed state.

Preferably, a third limiting portion is further disposed in the housing, and the third limiting portion is disposed on a fluid outlet side of the second valve plug to limit the second valve plug from moving away from the second valve seat in a second direction.

Preferably, the coupling member includes a first gear and a second gear rotating around a fixed shaft, the first gear and the second gear rotate synchronously, the first gear is engaged with the first rack, the second gear is engaged with the second rack, and a pitch circle diameter of the second gear is larger than a pitch circle diameter of the first gear.

In this scheme, because the reference circle diameter of second gear is greater than the reference circle diameter of first gear, can convert the less movement stroke of first valve plug into the great movement stroke of second valve plug.

Preferably, the first magnetic group comprises two first magnets that attract each other; the second magnetic group includes two second magnets that repel each other.

A gas water heater comprising a water inlet fitting as described above.

The positive progress effects of the invention are as follows: the water inlet joint can stabilize the water flow at a fixed value when the water pressure is not high and can cut off the water flow when the water pressure is too high, so that the machine is not started, and the water flow can be stabilized at a fixed value or so along with the continuous increase of the water pressure after a set pressure stabilizing point is reached; if the water pressure exceeds the maximum value of the pressure stabilizing range, the water flow is cut off, so that the water flow does not flow into the water heater, and the water pipe can be prevented from expanding and cracking under the condition of overlarge pressure.

Drawings

Fig. 1 is a schematic structural view of a gas water heater according to an embodiment of the present invention.

Fig. 2 is a perspective view illustrating a water inlet joint according to an embodiment of the present invention.

Fig. 3 is a side view schematically illustrating a structure of a water inlet joint according to an embodiment of the present invention.

Fig. 4 is a schematic cross-sectional view taken along line a-a of fig. 3.

Fig. 5 is a schematic cross-sectional view taken along line B-B of fig. 3.

Fig. 6 is a schematic sectional view taken along line C-C of fig. 3.

Fig. 7 is a schematic sectional structure view taken along line C-C of fig. 3 when viewed from a direction opposite to that of fig. 6.

Fig. 8 is a schematic cross-sectional structure view of a water inlet joint in a second state according to an embodiment of the present invention.

Fig. 9 is a schematic cross-sectional view of a water inlet joint in a third state according to an embodiment of the present invention.

Description of reference numerals:

water inlet joint 100

Outer casing 101

Fluid inlet 103

Fluid outlet 104

Fluid channel 105

First valve seat 107

Second valve seat 108

First valve plug 111

First valve stem 112

Second valve plug 114

First magnet 116

Second magnet 117

Coupling member 120

Fixed shaft 121

First gear 122

Second gear 123

First rack 124

Second rack 125

Sleeve 126

Sliding bar 127

First position-limiting part 131

The second position-limiting portion 132

Third position-limiting portion 133

First direction X

Second direction Y

Detailed Description

The present invention is further illustrated by way of example and not by way of limitation in the scope of the embodiments described below in conjunction with the accompanying drawings.

As shown in fig. 1, the gas water heater 200 includes: the gas water heater comprises a water inlet connector 100, a gas inlet connector 201, a water outlet connector 203, a proportional valve assembly 204, a water quantity valve assembly 205, a fan assembly 206, a gas distributor 207, a combustion chamber box 208, an electric controller assembly 209, a heat exchanger assembly 210 and a gas collecting hood assembly 211.

The proportional valve assembly 204 is used for controlling the on-off of gas and the magnitude of gas flow, the water quantity valve assembly 205 is used for detecting water flow signals and transmitting the water flow signals to the electric controller assembly 209, the fan assembly 206 is used for controlling the air intake, the gas distributor 207 is used for distributing and adjusting the gas flow, the electric controller assembly 209 is used for detecting signals and outputting control signals to control the whole machine, the heat exchanger assembly 210 is used for absorbing the heat of flue gas to heat cold water in the flue gas into hot water, and the gas collecting hood assembly 211 is used for discharging the flue gas.

Cold water enters from the water inlet connection 100 and flows through the heat exchanger assembly 210 and exits from the water outlet connection 203. The gas enters from the gas inlet connector 201, passes through the proportional valve assembly 204, enters the gas distribution chamber, is sprayed into the combustion chamber box 208 through the nozzle 123 of the gas distribution chamber, meanwhile, the fan component 206 conveys air to the interior of the combustion chamber box 208, the gas and the air are mixed and combusted in the interior of the combustion chamber box 208, the generated flue gas flows upwards and flows through the heat exchanger component 210, and finally the flue gas flows out from the gas collecting hood component 211.

As shown in fig. 2-9, the water inlet joint 100 includes: the valve comprises a housing 101, and a first valve plug 111, a second valve plug 114, a first magnetic group, a second magnetic group and a coupling member 120 which are arranged in the housing 101.

The housing 101 has a fluid inlet 103, a fluid outlet 104 and a fluid channel 105.

The first valve plug 111 can abut against the first valve seat 107 on the fluid inlet 103 side in the housing 101 to close the fluid passage 105.

The second valve plug 114 can abut against the second valve seat 108 on the fluid outlet 104 side in the housing 101 to close the fluid passage 105.

The first magnetic member is provided on the first valve plug 111 and the first valve seat 107, respectively, and causes the first valve plug 111 and the first valve seat 107 to approach each other.

The second magnetic set is disposed on the second valve plug 114 and the second valve seat 108, respectively, and keeps the second valve plug 114 and the second valve seat 108 away from each other.

The coupling member 120 is coupled to the first valve plug 111 and the second valve plug 114 and translates movement of the first valve plug 111 away from the first valve seat 107 into movement of the second valve plug 114 toward the second valve seat 108.

In the present embodiment, the casing 101 is a cylindrical member, but the present invention is not limited thereto, and the shape of the casing 101 may be set as needed.

The first valve plug 111 and the second valve plug 114 are each a truncated cone shaped member converging toward the respective valve seat, i.e., converging toward the respective valve seat. Thus, as the distance between the valve plug and the valve seat changes, the opening degree between the valve plug and the valve seat also changes.

The first valve seat 107 and the second valve seat 108 are each an annular protrusion protruding inward from the inner wall of the housing 101.

The coupling member 120 includes a first gear 122 and a second gear 123 rotating around a fixed shaft 121, and a first rack 124 engaged with the first gear 122 and a second rack 125 engaged with the second gear 123, the first gear 122 and the second gear 123 rotating in synchronization, and the second gear 123 having a reference circle diameter larger than that of the first gear 122.

The first gear 122 and the second gear 123 rotate synchronously, which means that the angular speed and the angle of rotation are the same. The first gear 122 and the second gear 123 may be fixed on the same sleeve, and then the sleeve is rotatably sleeved on the fixing shaft 121. The fixed shaft 121 is fixed with respect to the housing 101.

Since the pitch circle diameter of the second gear 123 is larger than that of the first gear 122, a smaller movement stroke of the first valve plug 111 can be converted into a larger movement stroke of the second valve plug 114. When the ratio of the pitch circle diameters of the first gear 122 and the second gear 123 is large, as long as the first valve plug 111 moves a small distance in the first direction X, the second valve plug 114 immediately abuts against the second valve seat 108, so that the fluid passage 105 is closed.

The moving stroke ratio of the first valve plug 111 to the second valve plug 114 is equal to the square of the ratio of the reference circle diameters of the first gear 122 and the second gear 123.

In other embodiments, the coupling member 120 may also include a single gear rotating about a fixed axis and first and second racks respectively engaged to opposite sides of the gear, the first rack being coupled to the first valve plug and the second rack being coupled to the second valve plug. At this time, the moving strokes of the first valve plug and the second valve plug are the same.

The first valve plug 111 moves a predetermined distance in the first direction X and then pushes the first rack 124.

A sleeve 126 is disposed at an end of the first rack 124 close to the first valve plug 111, and a first valve stem 112 is disposed at an end of the first valve plug 111 close to the first rack 124, and the valve stem is inserted into the sleeve 126.

The sleeve 126 and the valve stem are sleeved to move a predetermined distance in the first direction X to push the first rack 124.

The inner wall of the sleeve 126 is provided with a first limiting portion 131 and a second limiting portion 132 arranged along the first direction X, and the end of the valve rod far away from the first valve seat 107 can freely move between the first limiting portion 131 and the second limiting portion 132.

Alternatively, a sleeve may be provided on the first stem 112, and an end of the first rack 124 near the first valve plug 111 may be inserted into the sleeve.

One or more slide bars 127 are fixed to an outer peripheral side of the second valve plug 114, and the slide bars 127 are slidably inserted into the second valve seat 108.

A third position-limiting portion 133 is further disposed in the casing 101, and the third position-limiting portion 133 is disposed on the fluid outlet 104 side of the second valve plug 114 to limit the second valve plug 114 from moving in the first direction X.

In this embodiment, the first magnetic group includes two first magnets 116 that attract each other. The first magnet 116 disposed on the first valve seat 107 is an annular member attached to the surface of the first valve seat 107, and the first magnet 116 disposed on the first valve plug 111 is an annular member disposed on an end of the first valve plug 111 away from the first valve seat 107. Alternatively, the first magnet 116 may not be an annular member, but a discrete plurality of plate-like members or block-like members. Alternatively, the first magnet 116 may be integrally formed with the first valve seat 107 or the first valve plug 111, that is, a portion of the first valve seat 107 close to the first valve plug 111 is made into a magnetic body, and an end of the first valve plug 111 far from the first valve seat 107 is made into a magnetic body, and the magnetic properties are opposite. The second magnetic group comprises two second magnets 117 that repel each other. The second magnet 117 provided on the second valve seat 108 is an annular member attached to the surface of the second valve seat 108, and the second magnet 117 provided on the second valve plug 114 is an annular member provided on an end of the second valve plug 114 away from the second valve seat 108. Alternatively, the second magnet 117 may not be an annular member but a discontinuous plurality of sheet-like members or block-like members. Alternatively, the second magnet 117 may be integrally formed with the second valve seat 108 or the second valve plug 114, that is, a portion of the second valve seat 108 close to the second valve plug 114 is made into a magnetic body, and an end of the second valve plug 114 far from the second valve seat 108 is made into a magnetic body, so that the magnetic properties thereof are the same.

Although not shown in the drawings, the first rack 124, the second rack 125, the first valve stem 112, and the like are respectively provided with a support guide structure so that they can move only linearly in the axial direction of the housing 101.

In order to avoid affecting the functions of the first magnetic group and the second magnetic group, other components of the water inlet connector 100 are preferably made of plastic or other materials that cannot be magnetically attracted.

The operation of the water inlet fitting 100 is described below with reference to figures 7-9.

Fig. 7 illustrates a first state of the water inlet joint 100, in which the gas water heater is not on, and the user is not using water, and the water inlet joint 100 is in a closed state.

Fig. 8 illustrates a second state of the water inlet joint 100, in which a user starts to use water, the water inlet joint 100 is opened, the pressure on the fluid inlet 103 side of the water inlet joint 100 is greater than the pressure on the fluid outlet 104 side, and at this pressure difference, the first valve plug 111 moves toward the second direction Y against the attraction force of the first magnetic set to open the fluid passage 105, in this case, the pressure difference between the fluid inlet 103 side and the fluid outlet 104 side does not exceed the threshold value, and the first valve rod 112 moves in the sleeve 126 along with the first valve plug 111, but the movement range is between the first limiting portion 131 and the second limiting portion 132, and does not push against the sleeve 126.

Fig. 9 illustrates a third state of the water inlet joint 100, at this time, a pressure difference between the fluid inlet 103 side and the fluid outlet 104 side exceeds a threshold value, which may possibly cause a water pipe in the gas water heater to break, at this time, the first valve plug 111 further overcomes the suction force of the first magnetic set to move toward the second direction Y and abut against the second limiting portion 132, the pushing sleeve 126 also moves toward the second direction Y, the first rack 124 moves toward the second direction Y to drive the first gear 122 to rotate, and simultaneously the second gear 123 synchronously rotates to drive the second rack 125 to move toward the first direction X, and the second rack 125 drives the second valve plug 114 to overcome the repulsion force of the second magnetic set to move toward the first direction X and abut against the second valve seat 108 to close the fluid passage 105, thereby preventing the water pressure at the fluid outlet 104 side from being too high.

After the water pressure is lower than the threshold value again, the first valve plug 111 moves toward the first direction X under the action of the attraction force of the first magnetic assembly and does not abut against the second limiting portion 132 any more, and the second valve plug 114 moves toward the second direction Y under the action of the repulsion force of the second magnetic assembly to open the fluid passage 105 again.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.