CN216618651U - Gas control valve and gas switch control system using same - Google Patents
Gas control valve and gas switch control system using same Download PDFInfo
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- CN216618651U CN216618651U CN202122643393.6U CN202122643393U CN216618651U CN 216618651 U CN216618651 U CN 216618651U CN 202122643393 U CN202122643393 U CN 202122643393U CN 216618651 U CN216618651 U CN 216618651U
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Abstract
The utility model provides a gas control valve and a gas switch control system using the gas control valve, wherein the gas control valve, a plurality of gas switches, a gas input pipe and a gas conveying pipe form the gas switch control system; therefore, when the gas control valve operates, each gas switch cannot operate, and when each gas switch operates, the gas control valve cannot operate, so that the gas is prevented from leaking and the safety is good.
Description
Technical Field
The utility model relates to the technical field of gas stoves, in particular to a gas control valve and a gas switch control system using the gas control valve.
Background
As shown in PCT publication WO2017/060877, US publication US20150308693, US20060081236 and US6705307, conventional large outdoor gas grills typically include multiple burners (or burners) and gas switches connected to the burners to grill a large variety of foods or a large amount of foods for multiple users.
The appearance of the previously disclosed gas oven is slightly different, for example, US20150308693 and US20060081236 are further provided with a side oven (i.e. one side of the gas oven is further provided with an independent combustion unit comprising a burner and a gas switch), but the internal gas delivery systems are the same, and one gas delivery pipe is mainly used to connect all the gas switches (as shown in fig. 5 and 6 of US 6705307) so as to synchronously deliver gas to all the gas switches for ignition, and one end of the gas delivery pipe is further provided with a fluid control valve to control whether the gas flows into the gas delivery pipe, when the fluid control valve is closed, all the gas switches cannot be ignited, and only when the fluid control valve is opened, the gas switch can be activated.
Although the fluid control valve can synchronously control whether the gas flows into each gas switch or not, and has the simple effect of gas control, if the gas oven is used and all the gas switches are not closed, the gas oven is reused next time, and when the fluid control valve is opened and the burner is used for roasting food, the danger that one or some gas switches are not closed and the gas continuously leaks out may occur.
SUMMERY OF THE UTILITY MODEL
The main objective of the present invention is to provide a gas control valve and a gas switch control system using the same, wherein the gas control valve can be used to control whether each gas switch in a gas stove is activated, so that the gas can be prevented from leaking during the operation of the gas stove, the safety during the barbecue and cooking can be ensured, and the gas control valve is also a gas switch for igniting a burner, and has the dual functions of controlling the operation of each gas switch and being used as a gas ignition switch.
The gas stove comprises a plurality of burners, a plurality of gas switches and a gas control valve which are respectively connected with the burners, wherein each gas switch and each gas control valve respectively comprise a body, the body comprises an air inlet channel and a plurality of air outlet channels, a shutter is arranged inside the body, a knob group is arranged at one end of the body and connected with the shutter and comprises a rotating shaft capable of rotatably driving the shutter, a microswitch is arranged at one side of the body and corresponds to the knob group, and a driving sheet is arranged on the rotating shaft and can drive the microswitch; the gas inlet channel of the gas control valve is connected with a gas input pipe, the body of the gas control valve comprises a first gas outlet channel and a second gas outlet channel, the first gas outlet channel is connected with a burner corresponding to the gas control valve, the second gas outlet channel is connected with a gas conveying pipe, the gas conveying pipe is connected with each gas switch, the closure is in a hollow conical cylinder shape with one open end, the gas inlet channel is communicated with one end of the closure, a plurality of gas outlet holes and a gas outlet are formed in the closure, the inner diameter of the gas outlet holes is smaller than that of the gas outlet, the gas outlet corresponds to the second gas outlet channel, the extending directions of the gas outlet holes and the gas outlet are separated by a preset angle along the radial direction of the closure, and when the closure rotates to enable the gas outlet holes to correspond to the first gas outlet channel, the gas outlet does not correspond to the second gas outlet channel.
Preferably, the closing member of the gas control valve is provided with a first gas outlet hole and a second gas outlet hole, the second gas outlet hole is located between the first gas outlet hole and the gas outlet, the extending direction of the first gas outlet hole and the second gas outlet hole is separated by an included angle of 45 degrees along the radial direction of the closing member, and the extending direction of the second gas outlet hole and the axis of the gas outlet is separated by an included angle of 45 degrees along the radial direction of the closing member.
Preferably, the edge of the air outlet is separated from the extending direction of the shaft center by an included angle of 35 degrees, so that when the closure rotates by 125 degrees, the air outlet does not correspond to the second air outlet flow channel any more.
Preferably, the gas control valve further includes an electromagnetic valve disposed at one side of the body and corresponding to the first gas outlet flow passage for controlling whether the gas is outputted from the first gas outlet flow passage, and a pressing piece disposed on the rotating shaft for driving the electromagnetic valve.
Preferably, the gas control valve further comprises a start switch disposed at one side of the body and corresponding to the knob set, a driving plate disposed on the rotating shaft and driving the start switch, and the electromagnetic valve thermocouple type electromagnetic valve electrically connected to the start switch and a start switch disposed on each gas switch to form an electrical circuit, so that when all the gas switches are not closed, the electromagnetic valve of the gas control valve cannot be actuated, and when the gas control valve is actuated, each gas switch cannot be actuated.
Preferably, each gas switch further includes an electromagnetic valve disposed at one side of the body and corresponding to the gas outlet flow channel for controlling whether gas is output from the gas outlet flow channel, and a pressing piece disposed on the rotating shaft for driving the electromagnetic valve, and the gas control valve and the electromagnetic valve thermocouple type electromagnetic valve of each gas switch.
In addition, the utility model further provides a gas switch control system using the gas control valve, which is used for controlling the operation of a plurality of gas switches of a gas stove and comprises the gas input pipe, the gas conveying pipe and the gas control valve, wherein the gas input pipe is connected with an air inlet pipeline of the gas control valve, one end of the gas conveying pipe is connected with a second air outlet pipeline of the gas control valve, and the other end of the gas conveying pipe is connected with the air inlet pipeline of each gas switch; therefore, when all the gas switches are not closed, the electromagnetic valve of the gas control valve can not be actuated, and when the gas control valve is operated, all the gas switches can not be operated.
In addition, the utility model also provides a gas switch control system using the gas control valve, which is used for controlling the operation of a plurality of gas switches of a gas stove and comprises the gas input pipe, the gas conveying pipe and the gas control valve, wherein the gas input pipe is connected with an air inlet pipeline of the gas control valve, one end of the gas conveying pipe is connected with a second air outlet pipeline of the gas control valve, and the other end of the gas conveying pipe is connected with the air inlet pipeline of each gas switch; therefore, when the gas control valve operates, the gas outlet does not correspond to the second gas outlet flow channel, so that each gas switch cannot operate.
In addition, the utility model further provides a gas switch control system, which comprises a gas input pipe, a gas conveying pipe, a gas control valve and a plurality of gas switches, wherein the gas input pipe is connected with the gas conveying pipe, the gas conveying pipe is connected with the gas control valve and each gas switch, the gas control valve and each gas switch are respectively connected with a burner and respectively comprise a body, the body comprises an air inlet channel and a plurality of air outlet channels, a shutter is arranged in the body, a knob group is arranged at one end of the body and connected with the shutter and comprises a rotating shaft capable of rotatably driving the shutter, a starting switch is arranged at one side of the body and corresponds to the knob group, and a driving sheet is arranged on the rotating shaft and can drive the starting switch; the gas conveying pipe is connected with a gas control valve and an air inlet flow channel of each gas switch, an air outlet flow channel of the gas control valve is connected with a burner, the closure is in a hollow conical cylinder shape with an opening at one end, the air inlet flow channel is communicated with one end of the closure, and a plurality of air outlet holes are formed in the closure; the gas control valve and each gas switch further respectively comprise an electromagnetic valve which is arranged on one side of the body and corresponds to the gas outlet flow passage and is used for controlling whether gas can be output from the gas outlet flow passage, a pressing sheet which is arranged on the rotating shaft and can drive the electromagnetic valve, and each electromagnetic valve thermocouple type electromagnetic valve is electrically connected with the starting switch and the starting switch arranged on each gas switch to form an electric loop.
Drawings
Fig. 1 is a perspective view of a gas control valve according to a preferred embodiment of the present invention.
FIG. 2 is a bottom view of a gas control valve according to a preferred embodiment of the present invention.
Fig. 3 is a sectional view of the second drawing.
FIG. 4 is a front view (in the direction of the knob set) of a gas control valve according to a preferred embodiment of the present invention.
FIG. 5 is a side view (without the body) of a gas control valve according to a preferred embodiment of the present invention.
FIG. 6 is a system diagram of a gas switch control system according to a preferred embodiment of the present invention.
FIG. 7 is a system diagram of a gas switch control system according to another preferred embodiment of the present invention.
FIG. 8 is a system diagram of a gas switch control system according to yet another preferred embodiment of the present invention.
Description of the symbols:
the utility model comprises the following steps:
The pressing sheet 14 starts the switch 15
First outlet flow channel 24 and second outlet flow channel 26
The rotary plate 36 actuates the nubs 38
Recess 40 projection 42
Gas switch control system 100, 200, 300
The prior structure is as follows:
Closure 3 knob group 4
Detailed Description
The following description will be made in detail with reference to the accompanying drawings, in which preferred embodiments of the present invention are illustrated:
first, referring to fig. 1 to 5, a gas control valve 10 according to a preferred embodiment of the present invention can control the operation of a gas switch in a gas stove, which is an existing gas barbecue stove but not limited to, and includes a plurality of burners (not shown in the drawings) and a plurality of gas switches 1 and gas control valves 10 respectively connected to the burners, wherein each of the gas switches 1 and the gas control valves 10 is formed as an existing gas switch, and includes a body 2, a closure 3, a knob set 4, and an electronic ignition device (not shown in the drawings), the body 2 includes an inlet channel and a plurality of outlet channels, the closure 3 is disposed in the body 2, the knob set 4 is disposed at one end of the body 2 and connected to the closure 3, and includes a rotating shaft 5 for rotatably driving the closure 3; the above-mentioned body 2, the closure 3 and the knob set 4 are all prior art, and detailed structure and function thereof will not be described herein, and the gas control valve 10 of the present invention is characterized in that:
the body 2 of the gas control valve 10 comprises an inlet flow channel 22, a first outlet flow channel 24 and a second outlet flow channel 26, wherein the inlet flow channel 22 is connected with a gas input pipe 6, the first outlet flow channel 24 is connected with a burner corresponding to the gas control valve, the second outlet flow channel 26 is connected with a gas delivery pipe 7, the inlet flow channel of each gas switch 1 is connected with the gas delivery pipe 7, the shutter 3 is in a hollow conical cylinder shape with one end open (communicated with the inlet flow channel 22), the shutter 3 is provided with a first outlet hole 28, a second outlet hole 30 and a gas outlet 32, the inner diameters of the first and second outlet holes 28, 30 are smaller than the gas outlet 32, the second outlet hole 30 is arranged between the first outlet hole 28 and the gas outlet 32, the extension directions of the first outlet hole 28 and the second outlet hole 30 are separated by an included angle of 45 degrees along the radial direction of the shutter 3, the extension directions of the second outlet hole 30 and the gas outlet 32 are separated by an included angle of 45 degrees along the radial direction of the shutter, the edge of the gas outlet 32 is separated from the extending direction of the shaft center by an included angle of about 35 degrees, and corresponds to the second gas outlet flow channel 26, and when the shutter 3 is rotated (driven by the rotation shaft 5 rotating counterclockwise) to make the first gas outlet hole 28 correspond to the first gas outlet flow channel 24, the gas can be delivered from the first gas outlet flow channel 24 to the burner for combustion, the gas outlet 32 still corresponds to the second gas outlet flow channel 26, so that the gas can be delivered to each gas switch 1 through the second gas outlet flow channel 26 for combustion by other burners, and when the shutter 3 is rotated to make the second gas outlet hole 30 correspond to the first gas outlet flow channel 24 (about rotating the shutter by 125 degrees), the gas can still be delivered to the burner for combustion from the first gas outlet flow channel 24, but the gas outlet 32 no longer corresponds to the second gas outlet flow channel 26, and the gas cannot be delivered to each gas switch 1 through the second gas outlet flow channel 26.
In addition, the gas control valve 10 further includes an electromagnetic valve 12, a thermocouple type electromagnetic valve including a thermocouple (or referred to as an inductive needle) is disposed at one side of the body 2 and corresponds to the first outlet flow channel 24, so that the gas control valve 10 has a safety effect of flameout protection, and a pressing piece 14 is disposed on the rotating shaft 5 and can drive the electromagnetic valve 12. The electromagnetic valve 12 and the pressing piece 14 are similar to the electromagnetic valve and the driving piece of the conventional gas switch for controlling whether the gas is output or not. A start switch 15, a conventional micro switch or contact switch, in this embodiment, a micro switch, which is disposed at one side of the main body 2 and corresponds to the knob set 4, and is electrically connected to the electronic ignition device, a driving assembly 16, which is disposed inside the main body 2, and is composed of a push rod 34 and a rotating piece 36, the push rod 34 corresponds to the start bump 38 of the start switch 15, the rotating plate 36 is sleeved on the rotating shaft 5, the edge of the shaft is provided with a concave portion 40 and a protruding portion 42, the concave portion 40 corresponds to one end of the push rod 34, when the shaft 5 rotates, the rotary plate 36 can rotate along with it, and the protrusion 42 is used to push the push rod 34, so that the push rod 34 pushes against the start bump 38 to drive the start switch 15, the electromagnetic valve 12 is further electrically connected to the start bump 38 of the start switch 15 and a start switch of each gas switch 1 to form an electrical circuit, and the start switch 8 of each gas switch 1 is the same as the start switch 15.
Therefore, the gas control valve 10 can not only control whether the gas is output from the first gas outlet channel 24 to each gas switch 1, but also form an electrical circuit by the electromagnetic valve 12, the start switch 15 and the start switch 8 of each gas switch 1. In this way, the gas supply of each gas switch 1 and the start of the ignition circuit are collectively controlled by the gas control valve 10:
first, when the gas control valve 10 is used for ignition and actuation, if all the gas switches 1 are not closed, the electromagnetic valve 12 of the gas control valve 10 cannot be actuated (when the start switch of a certain gas switch 1 is driven, it indicates that the closure 3 of the gas switch 1 is not returned to the original position, and the gas switch 1 is not closed), the gas control valve 10 cannot be ignited and actuated, and gas leakage can be prevented.
When the gas control valve 10 can be ignited and activated (the rotation shaft 5 rotates counterclockwise), since the gas outlet 32 no longer corresponds to the second gas outlet channel 26, the gas can not be transported to each gas switch 1 through the second gas outlet channel 26, and each gas switch 1 can not be operated without supplying gas. On the contrary, when the gas control valve 10 is closed and stopped, the gas switch 1 is supplied with gas and the electrical circuit can be ignited and activated.
As can be seen from the above, the gas control valve 10, the gas input pipe 4, the gas transmission pipe 7 and each gas switch 1 can form a gas switch control system 100, as shown in fig. 6, the gas switch control system 100 can control the operation of each gas switch 1, and when each gas switch 1 is not completely closed, the electromagnetic valve 12 of the gas control valve 10 can not be actuated, and when the gas control valve 10 is operated, each gas switch 1 can not be operated, which has the safety effect of preventing gas from leaking.
As shown in fig. 7, another gas switching control system 200 using the gas control valve 10 according to the present invention is substantially the same as the gas switching control system 100 except that: each gas switch 1 further includes the electromagnetic valve 12 (thermocouple type electromagnetic valve) and a pressing piece (not shown, the same as the pressing piece 14) for controlling the electromagnetic valve 14, and the electromagnetic valve 12 of the gas control valve 10 is not electrically connected to the electromagnetic valve 12 of each gas switch 1 and does not form an electrical circuit. Therefore, although the gas control valve 10 of the gas switch control system 200 has no circuit loop for controlling each gas switch 1, it can still control whether the gas is output to each gas switch 1, that is, when the gas control valve 10 operates, each gas switch 1 has no gas for the ignition method to operate, but each gas switch 1 has the safety effect of flameout protection and no gas leakage risk through the electromagnetic valve 12.
As shown in fig. 8, a gas switching control system 300 according to still another preferred embodiment of the present invention is substantially the same as the gas switching control system 100 except that: the gas input pipe 6 of the gas switch control system 300 is connected to the gas delivery pipe 7, the gas delivery pipe 7 is connected to the gas control valve 10 and the inlet flow passage 22 of each gas switch 1, the gas control valve 10 is not provided with the gas outlet 32 and the second outlet flow passage 26, the gas control valve 20 and each gas switch 1 are also provided with the start switch 15 and the driving plate 16, the gas control valve 20 is further provided with the electromagnetic valve 12 (thermocouple type electromagnetic valve) and the pressing plate 14, and the electromagnetic valve 12 is electrically connected to each start switch 15 to form an electrical circuit. Therefore, the gas control valve 10 of the gas switch control system 300 can not control whether the gas can be delivered to each gas switch 1, but still can control the operation of each gas switch 1 by using the circuit formed by the electromagnetic valve 12 and each start switch 15, that is, when each gas switch 1 is not completely closed, the electromagnetic valve 12 of the gas control valve 10 can not be ignited and operated, when the gas control valve 10 is ignited and actuated, each gas switch 1 can not be ignited and operated, and when the gas control valve 10 is stopped to be actuated, each gas switch 1 can be ignited and operated (the gas is from the gas delivery pipe 7, but not the control of the gas control valve 10).
In summary, the gas control valve and the gas switch control system using the gas control valve provided by the present invention can control whether the gas transmission and/or ignition circuit of each gas switch can be started or not through the cooperation of the gas control valve with the gas input pipe, the gas transmission pipe and each gas switch, so that each gas switch can not operate when the gas control valve is opened, each gas switch can operate after the gas control valve is closed, gas leakage can be avoided when the gas cooker adopting the gas control valve and the gas switch control system is operated, the safety during barbecue and cooking can be ensured, and the gas control valve is also a gas switch capable of igniting a burner, and has the dual functions of controlling the gas transmission and/or ignition of each gas switch and serving as a gas ignition switch; therefore, the present invention is in accordance with the requirements of the utility model patent, and the application is made in accordance with the law.
However, the above description is only a few preferred embodiments of the present invention, and the scope of the present invention should not be limited by the above description, and all the modifications and substitutions made by the claims and the contents of the specification should be included within the scope of the present invention.
Claims (9)
1. A gas control valve can control the operation of a gas switch in a gas stove, the gas stove comprises a plurality of burners, a plurality of gas switches and the gas control valve which are respectively connected with the burners, each gas switch and the gas control valve respectively comprise a body, the body comprises an air inlet channel and a plurality of air outlet channels, a closer is arranged in the body, a knob group is arranged at one end of the body and is connected with the closer and comprises a rotating shaft which can rotatably drive the closer; the method is characterized in that:
the gas inlet channel of the gas control valve is connected with a gas input pipe, the body of the gas control valve comprises a first gas outlet channel and a second gas outlet channel, the first gas outlet channel is connected with a burner corresponding to the gas control valve, the second gas outlet channel is connected with a gas conveying pipe, the gas conveying pipe is connected with each gas switch, the closure is in a hollow conical cylinder shape with one open end, the gas inlet channel is communicated with one end of the closure, the closure is provided with a plurality of gas outlet holes and a gas outlet, the inner diameter of the gas outlet holes is smaller than that of the gas outlet, the gas outlet corresponds to the second gas outlet channel, the extending directions of the gas outlet holes and the gas outlet are separated by a preset angle along the radial direction of the closure, and when the closure rotates to enable the gas outlet holes to correspond to the first gas outlet channel, the gas outlet does not correspond to the second gas outlet channel;
thus, the gas control valve can control whether the gas is delivered to each gas switch.
2. The gas control valve according to claim 1, wherein the valve body has a first outlet hole and a second outlet hole, the second outlet hole is disposed between the first outlet hole and the outlet hole, the first outlet hole and the second outlet hole extend in a direction along the radial direction of the valve body at an included angle of 45 degrees, and the second outlet hole extends in a direction along the axial center of the outlet hole at an included angle of 45 degrees along the radial direction of the valve body.
3. A gas control valve according to claim 2, wherein the edge of the gas outlet is spaced from the axis by an angle of 35 degrees, so that when the closure is rotated by 125 degrees, the gas outlet no longer corresponds to the second gas outlet channel.
4. The gas control valve according to any one of claims 1 to 3, further comprising an electromagnetic valve disposed at one side of the body and corresponding to the first outlet flow passage for controlling whether gas is outputted from the first outlet flow passage, and a pressing piece disposed on the shaft for driving the electromagnetic valve.
5. The gas control valve according to claim 4, further comprising a start switch disposed at one side of the body and corresponding to the knob set, a driving plate disposed on the shaft for driving the start switch, the solenoid valve thermocouple type solenoid valve electrically connecting the start switch and the start switch of each gas switch to form an electrical circuit, so that when the gas switches are not completely closed, the solenoid valve of the gas control valve cannot be actuated, and when the gas control valve is actuated, each gas switch cannot be actuated.
6. The gas control valve as claimed in claim 4, wherein each gas switch further comprises an electromagnetic valve disposed at one side of the body and corresponding to the gas outlet passage for controlling whether gas is output from the gas outlet passage, a pressing piece disposed on the shaft for driving the electromagnetic valve, and the gas control valve and the electromagnetic valve thermocouple type electromagnetic valve of each gas switch.
7. A gas switch control system using the gas control valve as claimed in claim 5, for controlling the operation of a plurality of gas switches of a gas stove, comprising the gas input pipe, the gas delivery pipe and the gas control valve, wherein the gas input pipe is connected to the gas inlet channel of the gas control valve, one end of the gas delivery pipe is connected to the second gas outlet channel of the gas control valve, and the other end is connected to the gas inlet channel of each gas switch; therefore, when all the gas switches are not closed, the electromagnetic valve of the gas control valve can not be actuated, and when the gas control valve is operated, all the gas switches can not be operated.
8. A gas switch control system using the gas control valve as claimed in claim 6, for controlling the operation of a plurality of gas switches of a gas stove, comprising the gas input pipe, the gas delivery pipe and the gas control valve, wherein the gas input pipe is connected to the gas inlet channel of the gas control valve, one end of the gas delivery pipe is connected to the second gas outlet channel of the gas control valve, and the other end is connected to the gas inlet channel of each gas switch; therefore, when the gas control valve operates, the gas outlet does not correspond to the second gas outlet flow channel, so that each gas switch cannot operate.
9. A gas switch control system comprises a gas input pipe, a gas delivery pipe, a gas control valve and a plurality of gas switches, wherein the gas input pipe is connected with the gas delivery pipe, the gas delivery pipe is connected with the gas control valve and each gas switch, the gas control valve and each gas switch are respectively connected with a burner and respectively comprise a body, the body comprises an air inlet channel and a plurality of air outlet channels, a shutter arranged in the body, a knob group arranged at one end of the body and connected with the shutter and comprising a rotating shaft capable of rotatably driving the shutter, a starting switch arranged at one side of the body and corresponding to the knob group, and a driving sheet arranged on the rotating shaft and capable of driving the starting switch; the method is characterized in that:
the gas conveying pipe is connected with a gas control valve and an air inlet flow channel of each gas switch, an air outlet flow channel of the gas control valve is connected with a burner, the closure is in a hollow conical cylinder shape with an opening at one end, the air inlet flow channel is communicated with one end of the closure, and a plurality of air outlet holes are formed in the closure; and
the gas control valve and each gas switch further respectively comprise an electromagnetic valve which is arranged on one side of the body and corresponds to the gas outlet flow passage and is used for controlling whether gas can be output from the gas outlet flow passage, a pressing sheet which is arranged on the rotating shaft and can drive the electromagnetic valve, and each electromagnetic valve thermocouple type electromagnetic valve is electrically connected with the starting switch and the starting switch arranged on each gas switch to form an electric loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122643393.6U CN216618651U (en) | 2021-11-01 | 2021-11-01 | Gas control valve and gas switch control system using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122643393.6U CN216618651U (en) | 2021-11-01 | 2021-11-01 | Gas control valve and gas switch control system using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216618651U true CN216618651U (en) | 2022-05-27 |
Family
ID=81692696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122643393.6U Active CN216618651U (en) | 2021-11-01 | 2021-11-01 | Gas control valve and gas switch control system using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216618651U (en) |
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2021
- 2021-11-01 CN CN202122643393.6U patent/CN216618651U/en active Active
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