Gas valve and gas cooker comprising same

Abstract

The gas valve comprises a valve body and a valve element, when the valve element rotates to a first angle of the maximum communication area of a first gas outlet channel and a first communication channel, a first flow limiting structure is arranged at the position, corresponding to the first angle, of a second communication hole in a second communication channel, and a second flow limiting structure is arranged at the position, corresponding to the first angle, of the second communication channel. The first flow limiting structure is used for limiting the gas flow at the second communicating hole; when the valve element rotates to a second angle of the maximum communicating area of the second gas outlet channel and the second communicating channel, a second flow limiting structure is arranged at the position, corresponding to the second angle, of the first communicating hole in the first communicating channel, and the second flow limiting structure is used for limiting the gas flow at the position of the first communicating hole. According to the gas valve, the first flow limiting structure and the second flow limiting structure are arranged at the corresponding positions of the valve element of the gas valve, so that a combustor adopting the gas valve can provide different big fire configurations by rotating the valve element, different requirements of big fire cooking are met, the cost is lower, and the use reliability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of cooking utensils, in particular to a gas valve and a gas stove comprising the same. BACKGROUND

[0002] In the current gas stove, in addition to the conventional large fire mode (the gas passages of the inner ring burner and the outer ring burner are fully opened), a mode is needed to switch the firepower of the inner ring burner to the maximum and control the firepower of the outer ring burner to realize the explosive stir-frying mode to meet the needs of users who want to realize the explosive stir-frying cooking on the household stove. The current gas stove needs to add an electromagnetic valve in the gas passage to control the opening and closing of the bypass gas passage to supply more gas to the inner ring burner by opening the gas bypass passage to realize the switching to the explosive stir-frying mode. However, this design scheme has many deficiencies. On the one hand, in order to realize this function, multiple electric controls such as electromagnetic valves, control circuits, etc. need to be added, which undoubtedly increases the manufacturing cost of the product and affects the competitiveness of the product in the market. On the other hand, the starting form of the one-key explosive stir-frying function is the key operation on the panel to control the opening of the electromagnetic valve. In the actual use process, the panel is easily affected by dirt, water stains and other dirt, and these dirt may penetrate into the key gap, causing the key to malfunction or be insensitive, thereby seriously affecting the user's experience. SUMMARY

[0003] The technical problem to be solved by the utility model is to overcome the defects of the current gas stove that the structure is complex and the reliability is low to realize the large fire explosive stir-frying mode, and to provide a gas valve and a gas stove comprising the same.

[0004] The utility model solves the above technical problems through the following technical scheme:

[0005] A gas valve comprises a valve body and a valve core, the valve body has a first gas outlet passage and a second gas outlet passage, the valve core has a gas source passage, a first communication passage and a second communication passage, the valve core can rotate in a first direction from the zero position of the valve core relative to the valve body, the communication area of the first communication passage communicated with the first gas outlet passage and the second communication passage communicated with the second gas outlet passage changes to adjust the communication relationship between the gas source passage and the first gas outlet passage and the second gas outlet passage, along the first direction, the first communication passage comprises a plurality of first communication holes arranged at intervals, the first communication holes are respectively communicated inward to the gas source passage, the second communication passage comprises a plurality of second communication holes arranged at intervals, and the second communication holes are respectively communicated inward to the gas source passage.

[0006] When the valve core is rotated to a first angle at which the first gas outlet channel and the first communication channel are in a maximum communication area, a first flow limiting structure is arranged at the second communication hole corresponding to the first angle in the second communication channel, and the first flow limiting structure is used to limit the gas flow at the second communication hole.

[0007] When the valve core is rotated to a second angle at which the second gas outlet channel and the second communication channel are in a maximum communication area, a second flow limiting structure is arranged at the first communication hole corresponding to the second angle in the first communication channel, and the second flow limiting structure is used to limit the gas flow at the first communication hole.

[0008] In the gas valve, when the valve core is rotated to a first angle at which the first gas outlet channel and the first communication channel of the valve core are in a maximum communication area, a first flow limiting structure is arranged at the second communication hole of the valve core corresponding to the first angle to limit the gas flow of the second communication hole relative to the second gas outlet channel, so as to control the gas flow of the second gas outlet channel when the first gas outlet channel of the gas valve delivers the maximum gas flow. Meanwhile, when the valve core is rotated to a second angle at which the second gas outlet channel and the second communication channel of the valve core are in a maximum communication area, a second flow limiting structure is arranged at the first communication hole of the valve core corresponding to the second angle to limit the gas flow of the first communication hole relative to the first gas outlet channel, so as to control the gas flow of the first gas outlet channel when the second gas outlet channel of the gas valve delivers the maximum gas flow. Therefore, the burner using the gas valve can provide different large fire configurations by rotating the valve core, so as to meet different needs of large fire cooking. Meanwhile, the mechanical valve has a simple and reliable structure, and compared with the prior art in which an electromagnetic valve is used to open a bypass channel to increase the gas supply and switch to a stir-frying mode, the number of required parts is smaller, and the cost is lower. In addition, the mechanical valve does not need additional electric control parts, and has high use reliability.

[0009] Preferably, the valve core comprises an inner valve core unit and an outer valve core unit, the inner valve core unit and the outer valve core unit are sleeved with each other, the inner valve core unit is located at the inner side of the outer valve core unit, and each of the first communication hole and the second communication hole penetrates the inner valve core unit and the outer valve core unit in the direction from the inner side to the outer side.

[0010] By dividing the valve core into the inner valve core unit and the outer valve core unit, and making each of the first communication hole and the second communication hole penetrate the inner valve core unit and the outer valve core unit in the direction from the inner side to the outer side, the opening shape and size of each communication hole on the inner valve core unit and the outer valve core unit can be adjusted to realize independent control of each gas passage. Specifically, the inner valve core unit and the outer valve core unit can be respectively provided with communication holes of different sizes and sizes to realize independent control of the gas flow passing through the communication holes, and the split arrangement scheme is also convenient for processing.

[0011] Preferably, the first flow-limiting structure is arranged at the second communication hole of the inner valve core unit; and / or,

[0012] The second flow-limiting structure is arranged at the first communication hole of the inner valve core unit.

[0013] Since the inner valve core unit is located at the inner side, the space for arranging the passage is relatively limited, so the first flow-limiting structure or the second flow-limiting structure is arranged at the inner valve core unit to effectively limit the flow of gas.

[0014] Preferably, the thickness of the first flow-limiting structure is smaller than the opening depth of the second communication hole in the direction of gas flow.

[0015] By controlling the thickness of the first flow-limiting structure in the direction of gas flow, the gas pressure at the first flow-limiting structure can be avoided from being too large due to the excessive thickness of the first flow-limiting structure, so that the gas can flow relatively smoothly at the second communication hole while meeting the flow limiting requirement.

[0016] Preferably, the thickness of the second flow-limiting structure is smaller than the opening depth of the first communication hole in the direction of gas flow.

[0017] By controlling the thickness of the second flow-limiting structure in the direction of gas flow, the gas pressure at the first flow-limiting structure can be avoided from being too large due to the excessive thickness of the second flow-limiting structure, so that the gas can flow relatively smoothly at the first communication hole while meeting the flow limiting requirement.

[0018] Preferably, the first angle is smaller than the second angle, and the first gas outlet passage is arranged to communicate with the outer ring of the burner, and the second gas outlet passage is arranged to communicate with the inner ring of the burner.

[0019] By this arrangement, when the valve core of the gas valve is rotated from zero position to the first angle, the first gas outlet passage communicating with the outer ring of the burner is in the maximum communication area to provide the maximum gas flow, and the second gas outlet passage communicating with the inner ring of the burner is in the flow-limiting state to meet the daily cooking demand of large area and large firepower. Then continue to rotate to the second angle, the second gas outlet passage communicating with the inner ring of the burner is in the maximum communication area to provide the maximum gas flow, and the first gas outlet passage communicating with the outer ring of the burner is in the flow-limiting state to provide concentrated firepower to meet the demand of stir-frying cooking.

[0020] The second angle is set after the first angle, so that the user can be prevented from rotating to the second angle (intensive stir-frying mode) by mistake, and the user experience is improved.

[0021] To improve the sealing effect between the valve core and the valve body, the peripheral surface of the valve core is in the shape of a circular truncated cone that increases from bottom to top.

[0022] Preferably, the channel inlet of the gas source channel is arranged at the bottom of the valve core.

[0023] The gas source channel is arranged at the bottom of the valve core, so that the vertical height of the valve core is not excessively high due to the arrangement of the gas source channel on the peripheral surface of the valve core, and the sealing difficulty between the valve core and the valve body is avoided.

[0024] Preferably, the first angle is in the range of 80° to 100°.

[0025] Preferably, the second angle is in the range of 115° to 145°.

[0026] A gas stove, characterized in that it comprises the gas valve as described above.

[0027] The positive progress effect of the utility model lies in:

[0028] The gas valve is provided with the first flow limiting structure and the second flow limiting structure at the corresponding positions of the valve core, so that the burner using the gas valve can provide different large fire configurations by rotating the valve core, and meet different needs of large fire cooking. Meanwhile, the mechanical valve has a simple and reliable structure, and compared with the prior art scheme of opening a bypass channel by using an electromagnetic valve to increase the gas supply amount and switching to a stir-frying mode, the number of required parts is smaller, and the cost is lower. The gas valve does not need additional electric control parts, and has high use reliability. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 FIG. 1 is a structural schematic view of a gas valve according to an embodiment of the utility model.

[0030] Figure 2Structure schematic view of the valve core of the embodiment 1 of the utility model.

[0031] Figure 3 Structure schematic view of the valve body of the embodiment 1 of the utility model.

[0032] Figure 4a Structure schematic view of the communication relation when the valve core of the embodiment 1 of the utility model rotates to 90 DEG.

[0033] Figure 4b Structure schematic view of the communication relation when the valve core of the embodiment 1 of the utility model rotates to 125 DEG.

[0034] Figure 5a Structure schematic view (one) of the inner valve core unit of the embodiment 1 of the utility model.

[0035] Figure 5b Structure schematic view (two) of the inner valve core unit of the embodiment 1 of the utility model.

[0036] Figure 6 For Figure 4a The first flow limiting structure is at the local enlarged view.

[0037] Mark explanation:

[0038] Gas valve 10

[0039] Valve body 1, first gas outlet channel 11, second gas outlet channel 12

[0040] Valve stem 2

[0041] Valve core 3

[0042] First communication channel 31

[0043] First communication hole 310

[0044] Second communication channel 32

[0045] Second communication hole 320

[0046] Gas source channel 33

[0047] First flow limiting structure 34

[0048] Second flow limiting structure 35

[0049] Inner valve core unit 301

[0050] Outer valve core unit 302

[0051] First direction A Specific implementation

[0052] The utility model will be described below with a preferred embodiment, and in conjunction with the drawings to be more complete and clear.

[0053] Embodiment 1

[0054] The utility model provides a kind of gas valve 10 and gas cooking utensil comprising the gas valve 10. As Figure 1 And Figure 2 Indicated, the gas valve 10 includes valve body 1, valve stem 2 and valve core 3, valve core 3 is arranged in valve body 1, valve stem 2 is connected with valve core 3 and extends valve body 1, by rotating valve stem 2 to drive the valve core 3 in valve body 1 inside synchronous rotation, to adjust the opening of gas valve 10, realize the purpose of adjusting gas output flow.

[0055] Specifically, as Figure 3 Indicated, valve body 1 has first gas outlet passage 11 and second gas outlet passage 12, respectively to the inner ring and outer ring of the burner of gas cooking utensil. As Figure 4a And Figure 4b Indicated, valve core 3 has gas source passage 33, first communication passage 31 and second communication passage 32 communicated with external gas source, valve core 3 can rotate along first direction A (i.e. counterclockwise direction) from the zero of valve core 3 to valve body 1, by the communication area variation of first communication passage 31 communicated with first gas outlet passage 11 and the second communication passage 32 communicated with second gas outlet passage 12, to adjust the communication relationship of gas source passage 33 and first gas outlet passage 11 and second gas outlet passage 12.

[0056] Specifically, in the embodiment, as Figure 2 Indicated, along first direction A, first communication passage 31 includes a plurality of interval arranged first communication hole 310, these first communication hole 310 are respectively communicated to gas source passage 33, second communication passage 32 includes a plurality of interval arranged second communication hole 320, these second communication hole 320 are respectively communicated in gas source passage 33.

[0057] As Figure 4a Indicated, when valve core 3 rotates to the first angle of the maximum communication area of first gas outlet passage 11 and first communication passage 31, first flow limiting structure 34 is arranged at the second communication hole 320 corresponding to the first angle in second communication passage 32, and first flow limiting structure 34 is used to limit the gas flow at second communication hole 320.

[0058] As Figure 4b Indicated, when valve core 3 rotates to the second angle of the maximum communication area of second gas outlet passage 12 and second communication passage 32, second flow limiting structure 35 is arranged at the first communication hole 310 corresponding to the second angle in first communication passage 31, and second flow limiting structure 35 is used to limit the gas flow at first communication hole 310.

[0059] In the gas valve 10, when the valve core 3 is rotated to the first angle and the first gas outlet passage 11 is in the maximum communication area with the first communication passage 31 of the valve core 3, the first flow limiting structure 34 is arranged at the second communication hole 320 of the valve core 3 corresponding to the first angle to limit the gas flow of the second communication hole 320 relative to the second gas outlet passage 12, so as to control the gas flow of the second gas outlet passage 12 when the first gas outlet passage 11 of the gas valve 10 delivers the maximum gas flow. At the same time, when the valve core 3 is rotated to the second angle and the second gas outlet passage 12 is in the maximum communication area with the second communication passage 32 of the valve core 3, the second flow limiting structure 35 is arranged at the first communication hole 310 of the valve core 3 corresponding to the second angle to limit the gas flow of the first communication hole 310 relative to the first gas outlet passage 11, so as to control the gas flow of the first gas outlet passage 11 when the second gas outlet passage 12 of the gas valve 10 delivers the maximum gas flow. In this way, the gas valve 10 can provide different large fire configurations by rotating the valve core 3, so as to meet different needs of large fire cooking.

[0060] At the same time, the mechanical valve has simple and reliable structure, and compared with the prior art scheme of opening the bypass passage by using the electromagnetic valve to increase the gas supply and switch to the stir-frying mode, the number of required parts is smaller and the cost is lower. The mechanical valve does not need additional electric control parts and has high use reliability.

[0061] Specifically, in this embodiment, the first angle is 90° and the second angle is 125°. At the same time, the first gas outlet passage 11 is used to communicate with the outer ring of the burner, and the second gas outlet passage 12 is used to communicate with the inner ring of the burner. Therefore, by this specific structural arrangement scheme, when the valve core 3 of the gas valve 10 is rotated from the zero position to the first angle of 90°, the first gas outlet passage 11 communicating with the outer ring of the burner is in the maximum communication area to provide the maximum gas flow, and the second gas outlet passage 12 communicating with the inner ring of the burner is in the flow limiting state to meet the daily cooking demand of large area and large fire heating. Then, the valve rod 2 is continuously rotated to rotate the valve core 3 to the second angle of 125°, so that the second gas outlet passage 12 communicating with the inner ring of the burner is in the maximum communication area to provide the maximum gas flow, and the first gas outlet passage 11 communicating with the outer ring of the burner is in the flow limiting state to provide concentrated large fire to meet the demand of stir-frying cooking. By improving the structure of the gas valve 10 to provide different large fire configurations respectively, different cooking demands of users can be effectively met.

[0062] The fire configuration of the gas stove in this embodiment is as follows:

[0063]

[0064] Specifically, setting the second angle (125°) of the stir-frying mode after the first angle (90°) can avoid the user from rotating to the second angle by mistake to turn on the stir-frying mode, and can improve the user experience. In the embodiment, the first angle is 90° to be compatible with the large fire position of the conventional gas stove. In other embodiments, other angles in the range of 80°-100° are relatively more preferred. The second angle is 125° to be apart from the traditional large fire position of 90° by a certain angle, to avoid the user from rotating to the second angle (i.e., the large fire stir-frying position) by mistake. In other embodiments, other angles in the range of 115°-145° are relatively more preferred.

[0065] As shown in Figure 2 , the shape of the peripheral surface of the valve core 3 in the embodiment is a circular truncated cone, specifically, a circular truncated cone that increases from bottom to top. The first communication passage 31 for supplying gas to the outer ring is located at the upper part of the peripheral surface of the valve core 3, and the second communication passage 32 for supplying gas to the inner ring is located at the lower part of the peripheral surface of the valve core 3. The circular truncated cone is used to improve the sealing effect between the valve core 3 and the valve body 1. The first communication passage 31 for communicating with the outer ring of the burner is arranged at the upper part of the peripheral surface of the valve core 3, and the second communication passage 32 for communicating with the inner ring of the burner is arranged at the lower part of the peripheral surface of the valve core 3, to reasonably distribute the setting space of each communication passage, so that the passage cross-sectional size of the first communication passage 31 can be relatively larger, to meet the characteristic that the gas flow of the outer ring of the burner is relatively larger than that of the inner ring.

[0066] In addition, as shown in Figure 4a and 4b , in the embodiment, the channel entrance of the gas source passage 33 is arranged at the bottom of the valve core 3, to arrange the gas source passage 33 by using the space at the bottom of the valve core 3, to avoid arranging the gas source passage 33 on the peripheral surface of the valve core 3 to cause the vertical height of the valve core 3 to be too high, and to avoid increasing the sealing difficulty between the valve core 3 and the valve body 1.

[0067] As shown in Figure 4a and 4bAs shown, the valve core 3 comprises an inner valve core unit 301 and an outer valve core unit 302, the inner valve core unit 301 and the outer valve core unit 302 are sleeved with each other, the inner valve core unit 301 is arranged at the inner side of the outer valve core unit 302, and each first communication hole 310 and second communication hole 320 penetrates the inner valve core unit 301 and the outer valve core unit 302 in the direction from inside to outside, respectively. By dividing the valve core 3 into two parts of the inner valve core unit 301 and the outer valve core unit 302, and making each first communication hole 310 and second communication hole 320 penetrate the inner valve core unit 301 and the outer valve core unit 302 in the direction from inside to outside, respectively, the independent control of each gas passage can be realized by adjusting the size of the opening shape of each communication hole on the inner valve core unit 301 and the outer valve core unit 302. Specifically, the inner valve core unit 301 and the outer valve core unit 302 can be provided with communication holes of different sizes, respectively, to realize the independent control of the gas flow passing through the communication holes, and the split arrangement scheme is also convenient for processing.

[0068] Specifically, in the embodiment, the first flow limiting structure 34 is arranged at the second communication hole 320 of the inner valve core unit 301, and the second flow limiting structure 35 is arranged at the first communication hole 310 of the inner valve core unit 301. Figure 5a and Figure 5b As can be seen from the above, the first flow limiting structure 34 is arranged at the second communication hole 320 of the inner valve core unit 301, and the second flow limiting structure 35 is arranged at the first communication hole 310 of the inner valve core unit 301. The arrangement scheme is due to the fact that the inner valve core unit 301 is located at the inner side, and the space for the supply passage is relatively limited, so the first flow limiting structure 34 and the second flow limiting structure 35 are arranged at the inner valve core unit 301 to effectively limit the flow of gas passing through the inner valve core unit 301.

[0069] In addition, as shown in the above, Figure 6 the thickness D1 of the first flow limiting structure 34 is smaller than the opening depth D2 of the second communication hole 320 in the direction of gas flow, so as to avoid the excessive thickness of the first flow limiting structure 34 causing the excessive gas pressure at the first flow limiting structure 34, and to enable the gas to flow relatively smoothly at the second communication hole 320 while meeting the flow limiting requirement. Meanwhile, in the embodiment, the thickness of the second flow limiting structure 35 is also smaller than the opening depth of the first communication hole 310, so as to enable the gas to flow relatively smoothly at the first communication hole 310.

[0070] Embodiment 2

[0071] The embodiment also provides a gas valve 10, which has the same structure as the gas valve 10 provided in Embodiment 1, except that in the embodiment, the setting positions of the first flow-limiting structure 34 and the second flow-limiting structure 35 on the valve core 3 are adjusted, so that when the valve core 3 is rotated to the first angle (90°), the gas valve 10 is in a full-open state for supplying gas to the inner ring of the burner and in a flow-limiting state for supplying gas to the outer ring of the burner, that is, when the valve core 3 is rotated to the first angle (90°), the inner ring is in a maximum firepower state, and the outer ring is flow-limited, which can meet the needs of users to concentrate on large firepower for stir-frying. When the valve core 3 is continuously rotated to the second angle (125°), the gas valve 10 is in a flow-limiting state for supplying gas to the inner ring of the burner and in a full-open state for supplying gas to the outer ring of the burner, which can meet the needs of users for large-area large-firepower daily cooking.

[0072] The firepower configuration of the gas stove in the embodiment is as follows:

[0073]

[0074] Embodiment 3

[0075] The embodiment also provides a gas valve 10, which has the same structure as the gas valve 10 provided in Embodiment 1, except that in the embodiment, the first angle is greater than the second angle, the first angle corresponds to a full-open state of the passage of the inner ring, and the angle is 90°, and the second angle corresponds to a full-open state of the passage of the outer ring, and the angle is 50°. That is, in the gas valve 10 provided in the embodiment, as the valve rod 2 rotates, the zero position of the valve core 3 is first rotated to the second angle (50°) in the first direction A, so that the outer ring is in a maximum firepower state, and the inner ring is flow-limited, and then continuously rotated to the first angle (90°), so that the inner ring is in a maximum firepower state, and the outer ring is flow-limited.

[0076] In the embodiment, the setting angle of the second angle (50°) is adjusted relative to other embodiments (Embodiments 1 or 2), and the adjustment is achieved by adjusting the circumferential setting positions of the first communication passage 31 and the second communication passage 32 on the peripheral side surface of the valve core 3. Specifically, in the embodiment, the first gas outlet passage 11 and the first communication hole 310 corresponding to the maximum communication area of the first communication passage 31 are communicated at the second angle (50°), so that the outer ring is in a full-open state at 50°, and the second communication hole 320 with the first flow-limiting structure 34 is communicated with the second gas outlet passage 12 at the second angle (50°), so that the inner ring is in a flow-limiting state at 50°.

[0077] The firepower configuration of the gas stove in the embodiment is as follows:

[0078]

[0079] Although the specific embodiments of the present application are described above, those skilled in the art should understand that this is only an example, the protection scope of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present application, but these changes and modifications all fall within the protection scope of the present application.

Claims

1. A gas valve comprising a valve body having a first gas outlet passage and a second gas outlet passage therein, and a valve core having a gas source passage, a first communication passage and a second communication passage, the valve core being rotatable relative to the valve body in a first direction from a zero position of the valve core, the communication area of the first communication passage communicating with the first gas outlet passage and the second communication passage communicating with the second gas outlet passage being varied to adjust the communication relationship between the gas source passage and the first gas outlet passage and the second gas outlet passage, characterized in that, In the first direction, the first communication passage comprises a plurality of first communication holes arranged at intervals, each of which communicates inwardly with the gas source passage, and the second communication passage comprises a plurality of second communication holes arranged at intervals, each of which communicates inwardly with the gas source passage; When the valve core is rotated to a first angle at which the first gas outlet passage and the first communication passage have a maximum communication area, a first flow-limiting structure is arranged at the second communication hole corresponding to the first angle in the second communication passage, and the first flow-limiting structure is used to limit the flow of gas at the second communication hole; When the valve core is rotated to a second angle at which the second gas outlet passage and the second communication passage have a maximum communication area, a second flow-limiting structure is arranged at the first communication hole corresponding to the second angle in the first communication passage, and the second flow-limiting structure is used to limit the flow of gas at the first communication hole.

2. The gas valve of claim 1, wherein The valve core comprises an inner valve core unit and an outer valve core unit, the inner valve core unit and the outer valve core unit are sleeved with each other, the inner valve core unit is located on the inner side of the outer valve core unit, and each of the first communication hole and the second communication hole penetrates the inner valve core unit and the outer valve core unit in the direction from inside to outside.

3. A gas valve as claimed in claim 2, characterised in that The first flow-limiting structure is arranged at the second communication hole of the inner valve core unit; and / or, The second flow-limiting structure is arranged at the first communication hole of the inner valve core unit.

4. The gas valve of claim 1, wherein In the direction of gas flow, the thickness of the first flow-limiting structure is smaller than the opening depth of the second communication hole; and / or, In the direction of gas flow, the thickness of the second flow-limiting structure is smaller than the opening depth of the first communication hole.

5. The gas valve of claim 1, wherein The first angle is smaller than the second angle, the first gas outlet passage is used to communicate with the outer ring of the burner, and the second gas outlet passage is used to communicate with the inner ring of the burner.

6. A gas valve as claimed in claim 5, characterised in that The shape of the circumferential surface of the valve core in the direction from bottom to top is a frustum of a cone with the size from small to large, the first communication passage is located at the upper part of the circumferential surface of the valve core, and the second communication passage is located at the lower part of the circumferential surface of the valve core.

7. A gas valve as claimed in claim 6, characterised in that The passage inlet of the gas source passage is arranged at the bottom of the valve core.

8. The gas valve of claim 5, wherein The angle value of the first angle ranges from 80° to 100°.

9. The gas valve of claim 5, wherein The angle value of the second angle ranges from 115° to 145°.

10. A gas hob, characterized in that The gas valve comprises the valve core as claimed in any one of claims 1 to 9.

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