EP2407721A2

EP2407721A2 - Gas valve device and gas stove

Info

Publication number: EP2407721A2
Application number: EP11173502A
Authority: EP
Inventors: Christian Boehm; Xue Zou
Original assignee: BSH Bosch und Siemens Hausgeraete GmbH
Current assignee: BSH Hausgeraete GmbH
Priority date: 2010-07-16
Filing date: 2011-07-11
Publication date: 2012-01-18
Anticipated expiration: 2031-07-11
Also published as: TR201907510T4; EP2407721B1; CN102338233B; EP2407721A3; CN102338233A; ES2724711T3

Abstract

A gas valve device (10) and a gas stove are provided. The gas valve device (10) includes at least one gas inlet (5), gas channel, and nozzle (3), in which the gas inlet (5) is in communication with a main gas pipe, one end of the gas channel is in communication with the gas inlet, the other end of the gas channel is in communication with the nozzle (3), the nozzle (3) is used for supplying a burner with gas, a self-opening solenoid valve (1) is disposed in the gas channel, when the self-opening solenoid valve (1) is open, the gas flows to the nozzle through the self-opening solenoid valve (1); and when the self-opening solenoid valve (1) is closed, the gas is not able to flow to the nozzle (3) through the self-opening solenoid valve (1). The gas valve device (10) further includes a control module (8), and the control module (8) is used for controlling the self-opening solenoid valve (1). The intelligent control level of the gas is improved, and the service life of the gas valve device is increased.

Description

BACKGROUND OF THE INVENTION

Field of the Invention

The present invention relates to the field of stoves and stove components, and more particularly to a gas valve device and a gas stove.

Related Art

Conventional gas valves include a flow control valve and a safety valve. During use, a gas stove can ignite only when the flow control valve and the safety valve are opened at the same time. Current safety valves mostly include a solenoid valve core, which is mounted on a rear end of the flow control valve. The flow control valve is opened by pressing down a rotation shaft and then rotating such that a cam mounted on the rotation shaft rotates and pushes aside the solenoid valve by means of a push rod. It can be seen that the conventional gas valve technology has the following two disadvantages. First, the safety valve and the flow control valve are implemented separately, hence the manufacturing cost is increased and the control precision is low. Second, the conventional gas valve is mainly controlled mechanically. Thus, on the one hand, the intelligent control level is low and user requirements of high-end and/or special users are not met, and on the other hand, the mechanical or semi-mechanical control mode may easily cause wear, thereby affecting the control precision and sensitivity, reducing the service life and having safety risks of gas leakage.

SUMMARY OF THE INVENTION

In order to solve the foregoing technical problems, the present invention is directed to an electronically controlled gas valve device with long service life and a gas stove.
Embodiments of the present invention provide a gas valve device, which includes at least one gas inlet, gas channel, and nozzle, wherein the gas inlet is in communication with a main gas pipe, one end of the gas channel is in communication with the gas inlet, the other end of the gas channel is in communication with the nozzle, the nozzle is used for supplying a burner with gas, a self-opening solenoid valve is arranged in the gas channel such that, when the self-opening solenoid valve is open, the gas flows to the nozzle through the self-opening solenoid valve, and when the self-opening solenoid valve is closed, the gas is not able to flow to the nozzle through the self-opening solenoid valve. The gas valve device further includes a control module, and the control module is implemented to control the self-opening solenoid valve.
Preferably, the gas valve device, and in particular the self-opening solenoid valve, is provided with a thermocouple for closing the self-opening solenoid valve when accidental extinguishing of a fire is detected.
Preferably, an adjustment unit is provided in the gas channel between the self-opening solenoid valve and the nozzle for adjusting a gas output flow.
Preferably, the adjustment unit is an adjustment screw.
Preferably, the gas valve device further includes a valve body, wherein the gas inlet is disposed on or at the valve body, the gas channel is disposed inside the valve. Mounting holes of the nozzle, the self-opening solenoid valve, and the adjustment unit are preferably realized in the valve body.
Preferably, the valve is integrally formed. E.g. the valve body is a solid body.
Preferably, the gas channel is a part of the structure of the valve body.
Preferably, the valve device includes a first nozzle and a second nozzle, the first nozzle is used for supplying a small central fire cover of the burner with the gas, and the second nozzle is used for supplying an outer ring fire cover air-mixing chamber of the burner with the gas. A first set of self-opening solenoid valves and a second set of self-opening solenoid valves are provided, the first set of self-opening solenoid valves is used for controlling the gas flowing to the first nozzle, and the second set of self-opening solenoid valves is used for controlling the gas flowing to the second nozzle. The first set of self-opening solenoid valves includes more than one self-opening solenoid valves, and the gas passes through each of the self-opening solenoid valves of the first set of self-opening solenoid valves respectively, converges, and is delivered to the first nozzle. The second set of self-opening solenoid valves includes more than one self-opening solenoid valves, the gas passes through each of the self-opening solenoid valves of the second set of self-opening solenoid valves respectively, converges, and is delivered to the second nozzle.
Preferably, the gas channel between the self-opening solenoid valves of the first set of self-opening solenoid valves and the first nozzle includes gas tributaries and a gas convergence channel, each of the gas tributaries corresponds to one of the self-opening solenoid valves of the first set of self-opening solenoid valves respectively, each of the gas tributaries is disposed with an adjustment unit respectively, one end of the gas convergence channel is in communication with each of the gas tributaries respectively, and the other end of the gas convergence channel is connected to the first nozzle. The gas channel between the self-opening solenoid valves of the second set of self-opening solenoid valves and the second nozzle includes gas tributaries and a gas convergence channel, each of the gas tributaries corresponds to one of the self-opening solenoid valves of the second set of self-opening solenoid valves respectively, each of the gas tributaries is disposed with an adjustment unit respectively, one end of the gas convergence channel is in communication with each of the gas tributaries respectively, and the other end of the gas convergence channel is connected to the second nozzle. The adjustment unit is an adjustment screw.
Preferably, the number of the gas inlet is one.
Preferably, the number of the gas inlets is two, and the two gas inlets are used for supplying the first nozzle and the second nozzle with gas, respectively.
Preferably, the number of the self-opening solenoid valves of the second set of self-opening solenoid valves is greater than the number of the self-opening solenoid valves of the first set of self-opening solenoid valves.
Preferably, the first set of self-opening solenoid valves includes two self-opening solenoid valves, and the second set of self-opening solenoid valves includes three self-opening solenoid valves.
Preferably, the cross-sections of the gas tributary of a respective gas channel or set of solenoid valves are different in diameter.
Preferably, both cross-sections of the two gas tributaries corresponding to the two self-opening solenoid valves of the first set of self-opening solenoid valves are round, and diameters of the cross-sections of the two gas tributaries are 1.5 mm and 1.2 mm, respectively.
Preferably, all cross-sections of the three gas tributaries corresponding to the three self-opening solenoid valves of the second set of self-opening solenoid valves are round, and diameters of the cross-sections of the three gas tributaries are 1.8 mm, 1.5 mm, and 1.2 mm, respectively.
Preferably, the first set of self-opening solenoid valves includes one self-opening solenoid valve, and the second set of self-opening solenoid valves includes two self-opening solenoid valves.
Preferably, the first set of self-opening solenoid valves includes three self-opening solenoid valves, and the second set of self-opening solenoid valves includes five self-opening solenoid valves.
Preferably, the control module includes a touch screen structure or device.
Preferably, the control module includes a button structure or device.
Preferably, the control module includes a knob structure or device.
Preferably, the control module includes a wireless remote controller structure or device.
Preferably, the control module includes an intelligent control unit, and the intelligent control unit has several pre-set modes for controlling the self-opening solenoid valves for an operator to choose.
Preferably, the gas valve device, and in particular the control module, includes a sensor for detecting a cooking state, a gas content in the air, or a size of a flame for feeding back a detection result to the intelligent control unit; and the intelligent control unit controls the self-opening solenoid valves according to the information sent by the sensor.
Preferably, the control module is also implemented to control an ignition device.
Preferably, the number of the nozzles is greater than three; more than three sets of self-opening solenoid valves are included corresponding to each of the nozzles respectively for controlling the gas flowing to the corresponding nozzles; and each set of self-opening solenoid valves includes more than one self-opening solenoid valves.
Preferably, the number of the gas inlets is greater than three, and each of the gas inlets corresponds to each set of self-opening solenoid valves and each of the nozzles respectively.
The present invention further provides a gas stove comprising a base casing frame, pipelines, a panel, a cooker rack, a burner, an ignition device, and the gas valve device according to the foregoing description.
The beneficial effects of embodiments of the present invention are as follows.

1. The mechanical or semi-mechanical gas control mode conventionally used in the field of gas stoves is changed, and the intelligent control level of the gas is improved.
2. Mechanical wear is reduced to a maximum extent, the safety risks are reduced while the service life of the gas valve device is increased.
3. The flow control valve and the safety valve are integrated, thereby reducing the manufacturing cost.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded view of a valve device according to an embodiment of the present invention;
FIG. 2 is a three-dimensional view of a valve device according to an embodiment of the present invention;
FIG. 3 is another three-dimensional view of a valve device according to an embodiment of the present invention;
FIG. 4 is a front view of a valve device according to an embodiment of the present invention;
FIG. 5 is a sectional view along line A-A in FIG. 4;
FIG. 6 is a schematic view of device of an embodiment of the present invention;
FIG. 7 is a three-dimensional view of a valve device according to another embodiment of the present invention; and
FIG. 8 is another three-dimensional view of a valve device according to another embodiment of the present invention.

The meanings of the reference numbers in the drawings are as follows: 1, 11 self-opening solenoid valve, 2, 12 adjustment screw, 3, 13 nozzle, 4 valve body, 5, 15 gas inlet, 6, 16 gas tributary, 7, 17 gas convergence channel, 8 control module, 9 connection, 10 valve device.

DETAILED DESCRIPTION OF THE INVENTION

In order to make the objectives, solutions, and beneficial effects of the present invention more comprehensible, the present invention is described further below with reference to the accompanying drawings and preferred embodiments.
The present invention provides an embodiment of a gas valve device 10 as shown in FIG. 1 to FIG. 6, which includes a gas inlet 5, a gas channel, and at least one nozzle 3. The gas inlet 5 is in communication with a main gas pipe that delivers gas to the gas inlet 5, one end of the gas channel is in communication with the gas inlet 5, the other end of the gas channel is in communication with the nozzle 3, the gas flowing in through the gas inlet 5 is delivered to the nozzle 3 through the gas channel, and the nozzle 3 is used for supplying a burner with the gas. The device includes a first nozzle 3 and a second nozzle 13, the first nozzle 3 is used for supplying a small central fire cover of the burner with the gas, and the second nozzle 13 is used for supplying an outer ring fire cover air-mixing chamber of the burner with the gas. Two sets of self-opening solenoid valves, namely, a first set of self-opening solenoid valves 1, 1' and a second set of self-opening solenoid valves 11, 11', 11", are disposed in the gas channel. The first set of self-opening solenoid valves 1, 1' is used for controlling the gas flowing to the first nozzle 3, and the second set of self-opening solenoid valves 11, 11', 11" is used for controlling the gas flowing to the second nozzle 13. The first set of self-opening solenoid valves includes two self-opening solenoid valves 1, 1', and the gas passes through each of the two self-opening solenoid valves 1, 1' respectively, converges, and is delivered to the first nozzle 3. The second set of self-opening solenoid valves includes three self-opening solenoid valves 11, 11', 11", and the gas passes through each of the three self-opening solenoid valves 11, 11', 11" respectively, converges, and is delivered to the second nozzle 13.
The gas channel between the two self-opening solenoid valves 1, 1' of the first set of self-opening solenoid valves and the first nozzle 3 includes at least two gas tributaries 6, 6' and at least one gas convergence channel 7, and each of the gas tributaries 6, 6' corresponds to each of the two self-opening solenoid valves 1, 1' of the first set of self-opening solenoid valves, respectively. Both cross-sections of the two gas tributaries 6, 6' are round, but the diameters of the two circles are different, which are 1.5 mm and 1.2 mm, respectively. Since the diameters of the cross-sections are different, gas delivery efficiencies of the two gas tributaries 6, 6' are different. The larger the diameter the more gas is delivered per time unit. The two gas tributaries 6, 6' are respectively disposed with two adjustment units 2, 2', one end of the gas convergence channel 7 is in communication with the two gas tributaries 6, 6', respectively, and the other end of the gas convergence channel 7 is in communication with the first nozzle 3. When the two self-opening solenoid valves 1, 1' of the first set of self-opening solenoid valves are closed, no gas flows into the two gas tributaries 6, 6', and no gas flows out from the first nozzle 3. When one self-opening solenoid valve 1 is open, the gas passes through the self-opening solenoid valve 1, flows into the corresponding gas tributary 6, further flows into the gas convergence channel 7, and then flows out from the first nozzle 3. When the other self-opening solenoid valve 1' is also open, the gas flows into the corresponding gas tributary 6', further flows into the gas convergence channel 7, and then flows out from the first nozzle 3. It can be seen that, by controlling the two self-opening solenoid valves 1,1' of the first set of the self-opening solenoid valves, not only the opening and closing of the gas but also the gas supplying amount can be controlled.
The gas channel between the three self-opening solenoid valves 11, 11', 11" of the second set of self-opening solenoid valves and the second nozzle 13 includes three gas tributaries 16, 16', 16" and one gas convergence channel 17, and each of the gas tributaries 16, 16', 16" corresponds to each of the three self-opening solenoid valves 11, 11', 11 " of the second set of self-opening solenoid valves, respectively. All cross-sections of the three gas tributaries 16, 16', 16" are round, but the diameters of the three circles are different, which are 1.8 mm, 1.5 mm, and 1.2 mm, respectively. Since the diameters of the cross-sections are different, the gas delivery efficiencies of the three gas tributaries 16, 16', 16" are different. The larger the diameter the more gas is delivered in a unit time. The three gas tributaries 16, 16', 16" are respectively disposed with three adjustment units 12, 12', 12", one end of the gas convergence channel 17 is in communication with the three gas tributaries 16, 16', 16", respectively, and the other end of the gas convergence channel 17 is in communication with the second nozzle 13. The operating principle of the second set of the self-opening solenoid valves is the same as that of the first set of the self-opening solenoid valves, through which not only the opening and closing of the gas but also the gas supplying amount can be controlled.
It should be noted that, the assigned number of self-opening solenoid valves 1, 1', 11, 11ʹ, 11 ʺ in the first set of self-opening solenoid valves and the second set of self-opening solenoid valves is just one preferred solution, and the specific number may be chosen according to the actual requirements. Generally, the number of the self-opening solenoid valves 11, 11', 11" in the second set of self-opening solenoid valves should be greater than the number of the self-opening solenoid valves 1, 1ʹ in the first set of self-opening solenoid valves. For example, one self-opening solenoid valve may be set in the first set of self-opening solenoid valves, and two self-opening solenoid valves may be set in the second set of self-opening solenoid valves. For another example, three self-opening solenoid valves may be set in the first set of self-opening solenoid valves, and five self-opening solenoid valves may be set in the second set of self-opening solenoid valves.
In contrast to solenoid valves used in conventional safety valve arrangements that require to be opened under the action of an external mechanical force, the self-opening solenoid valves 1, 1', 11, 11ʹ, 11 " used in embodiments of the present invention may be opened under the action of a self-electromagnetic force. The self-opening solenoid valves 1, 1ʹ, 11, 11ʹ, 11ʺ can be disposed with a charging circuit, a discharge circuit, and a holding circuit. Before the operation starts, an external power source first charges a capacitor in the charging circuit, and at an instant when the operation starts, the fully charged capacitor begins to discharge, so that a load voltage on a coil of the self-opening solenoid valve instantly reaches a high value, and then the self-opening solenoid valve is opened by using an instant electromagnetic force generated by the voltage. During normal operation, the voltage generated by a thermocouple is fed to the self-opening solenoid valve through the holding circuit, so that the self-opening solenoid valve is maintained in an open state.
When a respective self-opening solenoid valve 1, 1ʹ, 11, 11ʹ, 11ʺ is open, the gas flows to the respective nozzle 3, 13 through the self-opening solenoid valve 1, 1ʹ, 11, 11ʹ, 11ʺ; and when the self-opening solenoid valve 1, 1ʹ, 11, 11ʹ, 11ʺ is closed, the gas is not able to flow to the nozzle 3, 13 through the self-opening solenoid valve 1, 1ʹ, 11, 11ʹ, 11ʺ. The opening and closing of the self-opening solenoid valves 1, 1ʹ, 11, 11ʹ, 11" is controlled by a control module 8 coupled to the valves 1', 11, 11ʹ, 11" by a line 9. The self-opening solenoid valves, 1ʹ, 11, 11ʹ, 11" can be provided with a thermocouple for closing the self-opening solenoid valve 1, 1ʹ, 11, 11ʹ, 11" when accidental extinguishing of a fire is detected, so as to prevent a user from being poisoned by the gas. It can be seen that, the respective self-opening solenoid valve 1, 1ʹ, 11, 11ʹ, 11" is a flow control valve as well as a safety valve. A respective adjustment unit 2, 2', 12, 12', 12" is disposed in the gas channel between the self-opening solenoid valves 1, 1ʹ, 11, 11ʹ, 11" and the nozzle 3, 13, for adjusting a gas output flow. The adjustment unit is preferably an adjustment screw.
As shown in the figures, this embodiment of the gas valve device 10 further includes a solid valve body 4, and the valve body 4 is integrally formed. The gas inlet 5 is disposed at or on the valve body 4, the gas channel 7, 17 is disposed inside the valve body 4, the gas channel is a part of the structure of the valve body 4, and mounting holes for the nozzles 3, 13, the self-opening solenoid valves 1, 1ʹ, 11, 11ʹ, 11ʺ, and the adjustment units 2, 2ʹ, 12, 12ʹ, 12" are arranged inside of the valve body 4, respectively. The valve body 4 used in this embodiment is approximately cuboid-shaped, but is not limited to such a shape in the actual application. The valve body 4 may be adjusted according to the requirements for the actual use. For example, the valve 4 may also have a shape of a cube, a sphere, a cone, a cylinder, an irregular body, or other shapes.
As shown in FIG. 6, the gas valve device 10 further includes a control module 8 for controlling the self-opening solenoid valve 1. The control module 8 may include various different structures, and may specifically comprise a touch screen device, a button device, a knob device, or a wireless remote controller device. For example, when the control module 8 includes a button device, a microprocessor control unit (MCU) can be used to preset three levels of power, namely, high, medium and low, or more levels of power for the user to self-adjust. Further, a fine adjustment function can be implemented, so as to enable the user to perform fine adjustments among the levels. As another example, the control module 8 may employ a continous adjustment mode similar to that used in electromagnetic cookers, so that the user can steplessly adjust the power of the flame.
In addition, the control module 8 may further implement an intelligent control mode. Specifically, the control module 8 can include an intelligent control unit, wherein the intelligent control unit has several pre-set modes for controlling the self-opening solenoid valves 1, 1ʹ, 11, 11ʹ, 11" for an operator to choose. Preferably, the control module 8 is further provided or coupled with/to a sensor for detecting a cooking state, a gas content in the air, or a size of a flame, wherein a detection result is sent to the intelligent control unit; and the intelligent control unit controls the self-opening solenoid valves 1, 1ʹ, 11, 11ʹ, 11ʺ according to the information sent by the sensor.
The control module 8 may also be implemented to control an ignition device.
Although the ignition device is not a part of the gas valve device 10, the control module 8 may be used for controlling the gas valve device 10 and the ignition device at the same time, thereby reducing the cost on the one hand, and improving the control efficiency on the other hand.
Another embodiment 10' of the present invention is as shown in FIG. 7 and FIG. 8, which is a slight modification on the basis of the technical solution of the foregoing embodiment. The main differences are as follows. First, the two self-opening solenoid valves 1, 1ʹ of the first set of self-opening solenoid valves and the three self-opening solenoid valves 11, 11ʹ, 11 " of the second set of self-opening solenoid valves are all disposed on the same surface of the valve body 4, so that the self-opening solenoid valves 1, 1ʹ, 11, 11ʹ, 11" are more easily controlled. Second, the gas inlet 5 is designed as a protrusive structure.
The foregoing description is merely related to preferred embodiments of the present invention, and other embodiments may be obtained by modifying some technical features. For example, the first nozzle, the second nozzle, the first set of self-opening solenoid valves, and the second set of self-opening solenoid valves are implemented in the foregoing embodiments because, generally, a small central fire cover and an outer ring fire cover of the burner are supplied with gas in current mainstream gas stoves. However, the application of the technical solution of the present invention is not limited to such a conventional mode. In the case that the burner is not divided into the small central fire cover and the outer ring fire cover but is supplied with gas in a uniform fashion, the technical solution of the present invention is also applicable. When the burner adopts a more complicated gas supply mode, e.g. the burner is divided into more than three different areas for respective gas supply, the technical solution of the present invention is still applicable. As another example, the control mode of the self-opening solenoid valves may be extended to more than two control modes such as opening and closing. Instead, the opening level may be adjusted continuously thereby implementing a more precise control of the gas supplying amount. According to another example, in the foregoing embodiments, the first nozzle and the second nozzle are supplied with the gas through the same gas inlet, i.e. the gas flowing in through the gas inlet passes through the first set of self-opening solenoid valves and the second set of self-opening solenoid valves respectively, and is then delivered to the first nozzle and the second nozzle. Alternatively, the number of the gas inlets may be set to two, and the two gas inlets are then used for supplying the first nozzle and the second nozzle with the gas, respectively. When the burner is divided into more than three different areas for a respective gas supply, the number of the gas inlets may be adjusted accordingly to more than three inlets, and the more than three gas inlets are then used for supplying the corresponding set of self-opening solenoid valves and nozzle with the gas.
The present invention further provides embodiments for a gas stove, which includes a base casing frame, pipelines, a panel, a cooker rack, a burner, an ignition device, and the gas valve device according to the foregoing embodiments.
It should be noted that, the present invention should not be construed as being limited to the implementation described above, but should be construed as covering all possible implementation situations determined from the claims in combination with the disclosure of the specification of the present invention.

Claims

A gas valve device (10) comprising
at least one gas inlet (5), gas channel, and nozzle (3), wherein the gas inlet (5) is in communication with a main gas pipe, one end of the gas channel is in communication with the gas inlet (5), the other end of the gas channel is in communication with the nozzle (3), and the nozzle (3) is used for supplying a burner with gas, wherein:
a self-opening solenoid valve (1) is arranged in the gas channel such that, when the self-opening solenoid valve (1) is open, the gas flows to the nozzle (3) through the self-opening solenoid valve (3), and when the self-opening solenoid valve (3) is closed, the gas is not able to flow to the nozzle (3) through the self-opening solenoid valve (3); and wherein

the gas valve device (10) further comprises a control module (8) for controlling the self-opening solenoid valve (1).
The gas valve device (10) according to claim 1, further comprising a thermocouple for closing the self-opening solenoid valve (1) when accidental extinguishing of a fire is detected.
The gas valve device (10) according to claim 1 or 2, further comprising an adjustment unit (2) disposed in the gas channel between the self-opening solenoid valve (1) and the nozzle (3) for adjusting a gas output flow.
The gas valve device (10) according to any one of claims 1 - 3, further comprising a valve body (4),
wherein the gas inlet (5) is disposed at the valve body (4), and the gas channel (7) is disposed inside the valve body (4), and
wherein mounting holes for the nozzle (3), the self-opening solenoid valve (1), and/or the adjustment unit (2) are arranged in or at the valve body (4).
The gas valve device (10) according to any one of claims 1 - 4, comprising
a first nozzle (3) for supplying a small central fire cover of the burner with gas, and a second nozzle (13) for supplying an outer ring fire cover air-mixing chamber of the burner with gas,
wherein a first set of self-opening solenoid valves (1, 1') is provided for controlling the gas flowing to the first nozzle (3), and a second set of self-opening solenoid valves (11, 11ʹ, 11 ") is provided for controlling the gas flowing to the second nozzle (13),
wherein the first set of self-opening solenoid valves comprises at least two self-opening solenoid valves (1, 1') arranged such that the gas passes through each of the self-opening solenoid valves (1, 1') of the first set of self-opening solenoid valves, converges, and is delivered to the first nozzle (3); and
wherein the second set of self-opening solenoid valves comprises at least two self-opening solenoid valves (11, 11ʹ, 11ʺ) arranged such that the gas passes through each of the self-opening solenoid valves (11, 11ʹ, 11ʺ) of the second set of self-opening solenoid valves, converges, and is delivered to the second nozzle (13).
The gas valve device (10) according to claim 5, characterized in that
a gas channel between the self-opening solenoid valves (1, 1ʹ) of the first set of self-open solenoid valves and the first nozzle comprises gas tributaries (6, 6') and a gas convergence channel (7), each of the gas tributaries (6, 6') corresponds to one of the self-opening solenoid valves (1, 1ʹ) of the first set of self-opening solenoid valves, and each of the gas tributaries (6, 6') is provided with an adjustment unit (2, 2'), one end of the gas convergence channel (7) is in communication with each of the gas tributaries (6, 6'), and the other end of the gas convergence channel (7) is connected to the first nozzle (3); and
a gas channel between the self-opening solenoid valves (11, 11ʹ, 11ʺ) of the second set of self-opening solenoid valves and the second nozzle (13) comprises gas tributaries (16, 16,', 16") and a gas convergence channel (17), each of the gas tributaries (16, 16', 16") corresponds to one of the self-open solenoid valves (11, 11ʹ, 11ʺ) of the second set of self-open solenoid valves, each of the gas tributaries (16, 16ʹ, 16") is provided with an adjustment unit (12, 12ʹ, 12"), one end of the gas convergence channel (17) is in communication with each of the gas tributaries (16, 16ʹ, 16ʺ), and the other end of the gas convergence channel (17) is connected to the second nozzle (13).
The gas valve device (10) according to claim 3 or 6, characterized in that the adjustment unit (2, 2ʹ, 12, 12ʹ, 12ʺ) is an adjustment screw.
The gas valve device (10) according to any one of claims 5 - 7, characterized in that the number of the gas inlets (5) is two, and the two gas inlets are used for independently supplying the first nozzle (3) with gas and the second nozzle (13) with the gas.
The gas valve device (10) according to claim any one of claims 5 - 8, characterized in that the number of the self-opening solenoid valves (11, 11ʹ, 11ʺ) of the second set of self-opening solenoid valves is greater than the number of the self-opening solenoid valves (1, 1ʹ) of the first set of self-opening solenoid valves.
The gas valve device (10) according to any one of claims 6 - 9, characterized in that the cross-sections of the gas tributaries (6, 6ʹ, 16, 16ʺ, 16") corresponding to the self-opening solenoid valves (1, 1,ʹ, 11, 11ʹ, 11ʺ) of the first set and/or the second set of self-opening solenoid valves are round, and the gas tributaries (6, 6ʹ, 16, 16ʹ, 16") of at least one set have different cross-section diameters.
The gas valve device (10) according to any one of claims 1 - 10, characterized in that the control module (8) includes at least one of the group of: a touch screen device, a button device, a knob device, a wireless remote controller device, and/or an intelligent control unit for controlling the self-open solenoid valves according to several pre-set modes according to an operator's input.
The gas valve device (10) according to any one of claims 1-11, further comprising a sensor for detecting a cooking state, a gas content in the air, and/or a size of a flame, and for providing a detection result to the control unit (8), wherein the control unit (8) is implemented to control the self-opening solenoid valves as a function of the detection result.
The gas valve device (10) according to any one of claims 1-12, characterized in that the control module (8) is implemented to control an ignition device.
The gas valve device (10) according to any one of claims 1-13, characterized in that
the number of the nozzles (3, 13) and/or inlets (5) is greater than three;
the gas valve device (10) includes more than three sets of self-opening solenoid valves, wherein each set corresponds to one of the nozzles (3, 13) for controlling the gas flowing to the corresponding nozzle (3, 13); and wherein
each set of self-opening solenoid valves comprises at least two self-opening solenoid valves (1, 1ʹ, 11, 11ʹ, 11ʺ).
A gas stove, comprising a base casing frame, pipelines, a panel, a cooker rack, a burner, an ignition device, and a gas valve device (10) according to any one of claims 1 to 14.