Gas valve and gas stove having the same

Abstract

The present invention discloses a gas valve and a gas stove having the same, the gas valve comprising: a valve body, the valve body having a containing cavity, an air inlet channel, a first air outlet channel and a second air outlet channel, the first air outlet channel being suitable for connecting to the inner ring gas channel of the gas stove burner and being connected to the containing cavity through a first air vent, the second air outlet channel being suitable for connecting to the outer ring gas channel of the gas stove burner and being connected to the containing cavity through a second air vent; a valve core, the valve core being rotatably fitted in the containing cavity, the valve core having a divided air cavity and an air through hole connected to the divided air cavity, the air inlet channel being connected to the divided air cavity, the air through hole being selectively connected to the first air vent and / or the second air vent when the valve core rotates, and the air through hole being always connected to the first air outlet channel and / or the second air outlet channel when the valve core rotates. The gas valve according to the embodiment of the present invention has the advantages of a large rotation angle of the valve core, good linearity of flow regulation of the gas valve, and continuous firepower without flameout.

Description

Technical Field

[0001] The invention relates to the technical field of gas stove manufacturing, and in particular to a gas valve and a gas stove having the gas valve. Background Art

[0002] In the gas stove in the related art, the gas valve includes a valve body and a valve core rotatably fitted in the valve body, the valve body of the gas valve is provided with an air outlet channel, and the valve core is provided with an air hole suitable for communicating with the air outlet channel. Since the height of the gas valve determines the overall height of the gas stove, the height of the gas valve is inevitably limited when manufacturing an ultra-thin gas stove. This is inconvenient for setting the air hole and the air outlet channel, so that the rotation angle of the valve core is limited, resulting in the gas valve flow regulation is not linear enough, affecting the functionality and applicability of the gas valve. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a gas valve having the advantages of a large rotation angle of the valve core, good flow regulation linearity of the gas valve, and continuous fire without flameout.

[0004] The present invention also provides a gas stove having the gas valve.

[0005] To achieve the above-mentioned purpose, a gas valve is provided according to an embodiment of the first aspect of the present invention, wherein the gas valve comprises: a valve body, wherein the valve body has a accommodating cavity, an air inlet channel, a first air outlet channel and a second air outlet channel, wherein the first air outlet channel is suitable for connecting to an inner ring gas channel of a gas stove burner and is connected to the accommodating cavity through a first air vent, and the second air outlet channel is suitable for connecting to an outer ring gas channel of the gas stove burner and is connected to the accommodating cavity through a second air vent; a valve core, wherein the valve core is rotatably engaged in the accommodating cavity, the valve core has a sub-cavity and an air through hole connected to the sub-cavity, the air inlet channel is connected to the sub-cavity, the air through hole can be selectively connected to the first air vent and / or the second air vent when the valve core rotates, and the air through hole is always connected to the first air outlet channel and / or the second air outlet channel when the valve core rotates.

[0006] The gas valve according to the embodiment of the present invention has the advantages of a large rotation angle of the valve core, good flow regulation linearity of the gas valve, and continuous fire without flameout.

[0007] In addition, the gas valve according to the above embodiment of the present invention may also have the following additional technical features:

[0008] According to some embodiments of the present invention, the air hole includes a first air hole and a second air hole arranged at intervals, the first air hole is suitable for communicating with the first air hole, and the second air hole is suitable for communicating with the first air hole and the second air hole, and the gas valve has a first working state, a second working state and a third working state. In the first working state, the first air hole is connected to the first air outlet channel and the second air hole is disconnected from the first air outlet channel and the second air outlet channel; in the second working state, the first air hole is connected to the first air outlet channel and the second air hole is connected to the second air outlet channel; in the third working state, the second air hole is connected to the first air outlet channel and the first air hole is disconnected from the first air outlet channel.

[0009] According to some embodiments of the present invention, the gas valve switches sequentially between the first working state, the second working state and the third working state when the valve core rotates, and the gas output of the gas valve shows a trend of first increasing and then decreasing.

[0010] According to some embodiments of the present invention, the air hole also includes a third air hole, and the third air hole is suitable for being connected to the first air hole, and the flow area of ​​the third air hole is smaller than the flow area of ​​the first air hole and smaller than the flow area of ​​the second air hole. The gas valve also has a fifth working state. In the fifth working state, the third air hole is connected to the first air outlet channel.

[0011] According to some embodiments of the present invention, the air holes include a first air hole, a second air hole and a third air hole arranged at intervals, the first air hole is suitable for communicating with the first air hole, the second air hole is suitable for communicating with the first air hole and the second air hole, and the third air hole is suitable for communicating with the first air hole.

[0012] According to some embodiments of the present invention, in the axial direction of the valve core, the heights of the first air hole and the third air hole are higher than the height of the second air hole.

[0013] According to some embodiments of the present invention, the first air hole, the second air hole and the third air hole are arranged adjacent to each other in the circumferential direction of the valve core, and the second air hole is located between the first air hole and the third air hole.

[0014] According to some embodiments of the present invention, the first ventilation hole includes a first opening portion and a second opening portion that are connected in sequence in the extension direction of the accommodating cavity, the first opening portion is suitable for being connected to the first air hole or the third air hole, and the second opening portion is suitable for being connected to the second air hole or the third air hole.

[0015] According to some embodiments of the present invention, the first vent hole is disposed on a side wall of the accommodating cavity, and the first vent hole is obliquely disposed along a thickness direction of the side wall.

[0016] According to some embodiments of the present invention, in the circumferential direction of the accommodating cavity, the angle between the second vent hole and the first vent hole is less than or equal to 90 degrees, and in the axial direction of the accommodating cavity, the height of the first vent hole is higher than the height of the second vent hole.

[0017] According to some embodiments of the present invention, the air inlet of the air inlet channel, the air outlet of the first air outlet channel and the air outlet of the second air outlet channel have the same opening direction, and the center lines of the air inlet channel, the first air outlet channel and the second air outlet channel are located in the same plane.

[0018] According to some embodiments of the present invention, the thickness of the valve body is less than or equal to 18 mm.

[0019] According to an embodiment of a second aspect of the present invention, a gas stove is provided. The gas stove comprises the gas valve according to the embodiment of the first aspect of the present invention.

[0020] The gas stove according to the embodiment of the present invention utilizes the gas valve according to the embodiment of the first aspect of the present invention, and the gas valve has the advantages of a large rotation angle of the valve core, good flow regulation linearity of the gas valve, and continuous firepower without flameout.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 Schematic diagram of the structure of a gas valve according to an embodiment of the present invention.

[0024] Figure 2 is a cross-sectional view of a gas valve according to some embodiments of the present invention.

[0025] Figure 3 is a cross-sectional view of a gas valve according to some embodiments of the present invention.

[0026] Figure 4 are cross-sectional views of gas valves according to other embodiments of the present invention.

[0027] Figure 5 are cross-sectional views of gas valves according to other embodiments of the present invention.

[0028] Figure 6 are cross-sectional views of gas valves according to other embodiments of the present invention.

[0029] Figure 7 are cross-sectional views of gas valves according to yet other embodiments of the present invention.

[0030] Figure 8 are cross-sectional views of gas valves according to yet other embodiments of the present invention.

[0031] Fig. 9 4 is a cross-sectional view of a gas valve according to some further embodiments of the present invention.

[0032] Fig.10 4 is a cross-sectional view of a gas valve according to some further embodiments of the present invention.

[0033] Fig.11 4 is a cross-sectional view of a gas valve according to some further embodiments of the present invention.

[0034] Fig.12 are cross-sectional views of gas valves according to other embodiments of the present invention.

[0035] Fig.13 are cross-sectional views of gas valves according to other embodiments of the present invention.

[0036] Fig.14 are cross-sectional views of gas valves according to other embodiments of the present invention.

[0037] Fig.15 Schematic diagram of the structure of a valve core of a gas valve according to an embodiment of the present invention.

[0038] Fig.16 is a cross-sectional view of a valve body of a gas valve according to an embodiment of the present invention.

[0039] Figure numerals: gas valve 1, valve body 100, accommodating cavity 101, air inlet channel 110, first air outlet channel 120, first vent hole 121, first opening portion 122, second opening portion 123, second air outlet channel 130, second vent hole 131, air storage chamber 140, guide slope 141, valve core 200, air cavity 201, air hole 210, first air hole 211, second air hole 212, third air hole 213, inner hole section 214, outer hole section 215. DETAILED DESCRIPTION

[0040] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0041] The following describes a gas valve 1 according to an embodiment of the present invention with reference to the accompanying drawings.

[0042] like Figure 1-Figure 16 As shown, the gas valve 1 according to the embodiment of the present invention includes a valve body and a valve core.

[0043] The valve body 100 has a housing chamber 101, an air inlet passage 110, a first air outlet passage 120 and a second air outlet passage 130. The first air outlet passage 120 is adapted to be connected to the inner ring gas passage of the gas stove burner and is connected to the housing chamber 101 through a first air vent 121. The second air outlet passage 130 is adapted to be connected to the outer ring gas passage of the gas stove burner and is connected to the housing chamber 101 through a second air vent 131. The valve core 200 is rotatably fitted in the housing chamber 101. The valve core 200 has a sub-gas chamber 201 and an air hole 210 connected to the sub-gas chamber 201. The air inlet passage 110 is connected to the sub-gas chamber 201. The air hole 210 can be selectively connected to the first air hole 121 and / or the second air hole 131 when the valve core 200 rotates. The air hole is always connected to the first air outlet passage 120 and / or the second air outlet passage 130 when the valve core 200 rotates.

[0044] What needs to be understood here is that "the air hole 210 can be selectively connected with the first air hole 121 and / or the second air hole 131 when the valve core 200 rotates" means that during the rotation of the valve core 200, the air hole 210 can be connected with the first air hole 121, or the air hole 210 can be connected with the second air hole 131, or the air hole 210 can be connected with the first air hole 121 and the second air hole 131 at the same time.

[0045] For example, the gas valve 1 is a valve structure for manually adjusting and controlling the on and off of gas and adjusting the gas flow rate. The gas valve 1 includes a valve body 100, a valve core 200, a valve stem, a micro switch, and other additional devices such as a solenoid valve. Specifically, the gas valve 1 can be a gas cock valve, and its main working principle is: the gas of the gas source enters the gas valve 1 through the air inlet channel 110 of the valve body 100, passes through the solenoid valve in sequence, and then enters the valve core 200, and finally passes through the air hole 210 of the valve core 200 to communicate with the first air outlet channel 120 and / or the second air outlet channel 130, and then provides gas to the gas stove burner through the air outlet channel.

[0046] According to the gas valve 1 of the embodiment of the present invention, the valve body 100 and the valve core 200 are provided so that the valve core 200 can be rotatably fitted in the accommodating cavity 101 of the valve body 100. In this way, the gas supply of the gas stove can be adjusted by rotating the valve core 200, so as to adjust the fire power of the gas stove burner.

[0047] Furthermore, by making the air hole 210 selectively communicate with the first air hole 121 and / or the second air hole 131 when the valve core 200 rotates, when the valve core 200 is rotated to make the air hole 210 communicate with the first air hole 121, the gas can flow to the inner ring gas channel of the gas stove burner through the first gas outlet channel 120, so that the gas can be burned at the inner ring gas channel of the gas stove burner; when the valve core 200 is rotated to make the air hole 210 communicate with the second air hole 131, the gas can flow to the inner ring gas channel of the gas stove burner through the second gas outlet channel 120, so that the gas can be burned at the inner ring gas channel of the gas stove burner; The channel 130 flows to the outer ring gas channel of the gas stove burner, so that the gas can be burned in the outer ring gas channel of the gas stove burner; when the valve core 200 is rotated to connect the air hole 210 with the first air hole 121 and the second air hole 131, the gas can flow to the inner ring gas channel of the gas stove burner through the first air outlet channel 120 and flow to the outer ring gas channel of the gas stove burner through the second air outlet channel 130, so that the gas can be burned in the inner ring gas channel and the outer ring gas channel of the gas stove burner.

[0048] Thus, the air hole 210 can be connected with both the first air hole 121 and the second air hole 131. Compared with the method of independently setting the air hole connected with the first air hole 121 and the air hole connected with the second air hole 131 on the valve core 200, it is convenient to process and set the air hole 210, and it is convenient to set the air hole 210 into any desired shape, and there can be a sufficient sealing distance around the air hole 210. This not only facilitates the reasonable use of the space of the gas valve 1, and facilitates the thickness of the valve body 100 to be very thin, thereby reducing the overall height of the gas valve 1, but also makes the flow curve of the gas valve 1 more linear, and makes the firepower adjustment performance of the inner and outer rings of the gas stove burner better, and is convenient to increase the rotation adjustment angle of the valve core 200, so that users can more easily capture the desired firepower when using the gas stove.

[0049] In addition, the air hole 210 is arranged to be always connected with the first air outlet channel 120 and / or the second air outlet channel 130 when the valve core 200 rotates. In this way, the fire of the gas stove can be ensured to be continuous and not to be extinguished during the process of adjusting the fire power. Therefore, it is convenient to improve the fire power stability and reliability of the gas stove, avoid the phenomenon of extinguishing during the process of adjusting the fire power, avoid the user from needing to ignite the gas stove twice during use, and improve the user's comfort and convenience.

[0050] What needs to be understood here is that "the air hole 210 is always connected with the first air outlet channel 120 and / or the second air outlet channel 130 when the valve core 200 rotates" means that during the rotation of the valve core 200, the air hole 210 is always connected with at least one of the first air outlet channel 120 and the second air outlet channel 130. In other words, the gas stove burner is always in a state of gas burning.

[0051] Therefore, the gas valve 1 according to the embodiment of the present invention has the advantages of a large rotation angle of the valve core 200, good flow regulation linearity of the gas valve 1, and continuous fire without flameout.

[0052] The following describes a gas valve 1 according to a specific embodiment of the present invention with reference to the accompanying drawings.

[0053] In some specific embodiments of the present invention, Figure 1-Figure 16 As shown, the gas valve 1 according to the embodiment of the present invention includes a valve body 100 and a valve core 200 .

[0054] Specifically, the air hole 210 includes a first air hole 211 and a second air hole 212 arranged at intervals, the first air hole 211 is suitable for communicating with the first air hole 121, and the second air hole 212 is suitable for communicating with the first air hole 121 and the second air hole 131, and the gas valve 1 has a first working state, a second working state and a third working state. In the first working state, the first air hole 211 is connected to the first air outlet channel 120 and the second air hole 212 is disconnected from the first air outlet channel 120 and the second air outlet channel 130. In the second working state, the first air hole 211 is connected to the first air outlet channel 120 and the second air hole 212 is connected to the second air outlet channel 130. In the third working state, the second air hole 212 is connected to the first air outlet channel 120 and the first air hole 211 is disconnected from the first air outlet channel 120. In this way, the gas flow of the gas valve 1 can be adjusted by changing the communication state between the gas hole 210 and the first gas outlet channel 120 and the second gas outlet channel 130, thereby adjusting the fire power of the gas stove.

[0055] Optionally, during the rotation of the valve core 200 , the gas valve 1 sequentially experiences a first working state, a second working state and a third working state.

[0056] More specifically, the gas valve 1 also has a fourth working state, in which the second air hole 212 is connected to the first gas outlet channel 120 and the second gas outlet channel 130. This further facilitates adjusting the firepower of the gas stove, and in the fourth working state, the gas stove has the maximum firepower.

[0057] Optionally, during the rotation of the valve core 200 of the gas valve 1, the gas valve 1 switches between the first working state, the second working state and the third working state in sequence, and the gas output of the gas valve 1 shows a trend of first increasing and then decreasing.

[0058] In some embodiments, the air hole 210 further includes a third air hole 213, the third air hole 213 is adapted to communicate with the first air hole 121, and the flow area of ​​the third air hole 213 is smaller than the flow area of ​​the first air hole 211 and smaller than the flow area of ​​the second air hole 212. The gas valve 1 also has a fifth working state, in which the third air hole 213 is communicated with the first gas outlet channel 120. Specifically, the third air hole 213 can be formed as a micro-fire hole. Thus, it is convenient to realize the small fire power adjustment of the gas stove, thereby facilitating the increase of the fire power adjustment range of the gas stove.

[0059] Optionally, during the rotation of the valve core 200 of the gas valve 1, the gas valve 1 switches among the first working state, the second working state, the fourth working state, the third working state and the fifth working state in sequence, and the gas output of the gas valve 1 shows a trend of first increasing and then decreasing, with the maximum firepower appearing in the fourth working state and the minimum firepower appearing in the fifth working state.

[0060] The specific structure of the gas valve according to some embodiments of the present invention is described below.

[0061] Specifically, Fig.15 As shown, the air hole 210 includes an inner hole section 214 and an outer hole section 215 which are connected in sequence in the radial direction of the valve core 200, and the span of the outer hole section 215 along the circumference of the valve core 200 is greater than the span of the inner hole section 214 along the circumference of the valve core 200. Among them, the outer hole section 215 with a larger span along the circumference of the valve core 200 can increase the maximum rotation angle of the valve core 200 to adjust the flow rate, and the inner hole section 214 with a smaller span along the circumference of the valve core 200 cooperates with the outer hole section 215 with a larger span along the circumference of the valve core 200 to improve the linear transformation of the flow rate adjustment and the continuity of the flow rate change. In this way, it is convenient to change the matching area of ​​the air hole 210 and the first vent hole 121 and / or the second vent hole 131 during the rotation of the valve core 200 to change the flow area of ​​the gas, so as to adjust the gas supply and make the flow curve of the gas valve 1 more linear.

[0062] Specifically, the inner hole section 214 may be a circular hole, and the outer hole section 215 may be an oval hole extending along the circumference of the valve core 200. The circular hole and the oval hole structure are easier to process, and the oval hole extending along the circumference of the valve core 200 is easier to control the maximum rotation angle of the flow regulation.

[0063] Optionally, the valve core 200 can rotate within an angle range of 0-225 degrees. By making the air hole 210 communicate with the first air hole 121 and the second air hole 131, the valve core 200 can rotate within a range of 0-225 degrees, thereby increasing the rotation range of the valve core 200, making it easier to finely adjust the firepower of the gas stove burner to capture the firepower that the user wants to obtain.

[0064] Of course, the rotatable angle of the valve core 200 can be 180 degrees, 220 degrees or 225 degrees.

[0065] In some embodiments, Fig.15 As shown, the air holes 210 include a first air hole 211, a second air hole 212, and a third air hole 213 arranged at intervals, the first air hole 211 is suitable for communicating with the first air hole 121, the second air hole 212 is suitable for communicating with the first air hole 121 and the second air hole 131, and the third air hole 213 is suitable for communicating with the first air hole 121. Thus, the valve core 200 can be communicated with the inner ring gas channel of the gas stove burner through the first air hole 211, the second air hole 212, and the third air hole 213, and can be communicated with the outer ring gas channel of the gas stove burner through the second air hole 212, so as to facilitate switching and adjusting the fire power between the inner and outer rings of the gas stove burner.

[0066] Specifically, Fig.15 As shown, in the axial direction of the valve core 200, the heights of the first air hole 211 and the third air hole 213 are higher than the height of the second air hole 212 (the vertical direction is as shown in FIG. Fig.15 As shown by arrow A in FIG. 1 ). Thus, the second air hole 212 can be staggered with the first air hole 211 and the third air hole 213, which not only facilitates the design and processing of the shapes of the first air hole 211, the second air hole 212 and the third air hole 213, but also ensures that there is a sufficient sealing distance between the first air hole 211, the second air hole 212 and the third air hole 213.

[0067] Alternatively, if Fig.15 As shown, the first air hole 211, the second air hole 212 and the third air hole 213 are arranged adjacent to each other in the circumferential direction of the valve core 200, and the second air hole 212 is located between the first air hole 211 and the third air hole 213. In this way, the continuous change of the firepower can be achieved during the rotation of the valve core 200.

[0068] Specifically, Figure 6As shown, the first vent hole 121 includes a first opening portion 122 and a second opening portion 123 which are connected in sequence in the extension direction of the accommodating cavity 101. The first opening portion 122 is suitable for being directly connected to the first air hole 211 or the third air hole 213, and the second opening portion 123 is suitable for being directly connected to the second air hole 212 or the third air hole 213. Since the heights of the first air hole 211 and the third air hole 213 are higher than the height of the second air hole 212, the first opening portion 122 and the second opening portion 123 can be respectively arranged to correspond to the arrangement heights of the first air hole 211, the second air hole 212 and the third air hole 213, so as to realize reliable communication between the first vent hole 121 and the first air hole 211, the second air hole 212 and the third air hole 213 during the rotation of the valve core 200, and adjust the flow of the gas.

[0069] Alternatively, if Figure 6 As shown, the first vent hole 121 is provided on the side wall of the accommodating cavity 101, and the first vent hole 121 is inclined along the thickness direction of the side wall of the accommodating cavity 101. This facilitates the reasonable arrangement of the gas hole 210 and the first gas outlet channel 120, and facilitates making the structure of the gas valve 1 more reasonable and compact.

[0070] Specifically, in the circumferential direction of the accommodating cavity 101, the angle between the second vent hole 131 and the first vent hole 121 is less than or equal to 90 degrees, and in the axial direction of the accommodating cavity 101, the height of the first vent hole 121 is higher than the height of the second vent hole 131. Specifically, the second vent hole 131 can be located within a range of 90 degrees clockwise from the first vent hole 121. In this way, the second vent hole 131 is conveniently connected with the second air hole 212.

[0071] In some embodiments, Figure 1 As shown, the air inlet of the air inlet channel 110, the air outlet of the first air outlet channel 120 and the air outlet of the second air outlet channel 130 have the same opening direction, and the center lines of the air inlet channel 110, the first air outlet channel 120 and the second air outlet channel 130 are located in the same plane. This is conducive to reducing the length of the gas distribution pipe, making the structure of the gas stove more reasonable and compact, and improving the assembly performance of the gas stove.

[0072] Alternatively, if Fig.16 As shown, the valve body 100 further includes a gas storage chamber 140, which is connected between the air inlet channel 110 and the accommodating chamber 101. In this way, the gas storage chamber 140 can have a pressure stabilizing effect, so that the outlet pressure of the gas valve 1 is more stable and does not change with the inlet pressure.

[0073] Furthermore, the gas storage chamber 140 is provided with a guide slope 141 suitable for guiding the gas to flow into the gas distribution cavity 201. Therefore, the guide slope 141 in the gas storage chamber 140, on the one hand, leaves a certain margin for the screw processing hole, and on the other hand, it is easy to demold, and the guide slope has less resistance to the gas, and the pressure loss of the gas is smaller.

[0074] Specifically, the thickness of the valve body 100 is less than or equal to 18 mm, which not only saves the material cost of the gas valve 1 but also facilitates the installation of the gas valve 1 .

[0075] Specifically, the gas valve 1 exhausts gas through the second gas outlet channel 130 of the valve body 100 by means of the second gas hole 212 of the valve core 200, and the first gas hole 211, the second gas hole 212 and the third gas hole 213 are arranged alternately in the axial direction of the valve core 200 to achieve reasonable use of space, thereby reducing the overall height of the gas valve 1. The thickness of the valve body 100 can be made very thin. The thinnest thickness is the diameter of a standard solenoid valve plus a certain wall thickness, which is also the maximum thickness of the valve body 100 and can be 18 mm.

[0076] In some specific embodiments, Figure 2 and Figure 3 As shown, the rotation angle of the valve core 200 is 0 degrees, that is, the valve core 200 does not rotate, at this time, the first gas outlet channel 120 and the second gas outlet channel 130 are both disconnected, and no gas passes; Figure 4-Figure 6 As shown, the rotation angle of the valve core 200 is 40 degrees, the first air outlet channel 120 has been exhausted, and the second air outlet channel 130 is still disconnected; Figure 7 and Figure 8 As shown, the rotation angle of the valve core 200 is 90 degrees. At this time, the gas valve 1 is in the high-fire position, that is, the fire power of the gas valve 1 is the largest, and the first gas outlet channel 120 and the second gas outlet channel 130 are both connected to the valve core 200 to discharge gas; Figure 9-11 As shown, the rotation angle of the valve core 200 is 170 degrees, at this time, the first air outlet channel 120 is outlet, and the second air outlet channel 130 is in a disconnected state; Figure 12-14 As shown, the rotation angle of the gas valve 1 is 225 degrees. At this time, the gas valve 1 is in the low-fire position, that is, the firepower of the gas valve 1 is the smallest, and only the first gas outlet channel 120 is left to discharge gas. The firepower of the minimum fire is determined by the micro-fire aperture of the third gas hole 213. Of course, the angle of the low-fire position is not fixed and can be set arbitrarily. For example, the rotation angle of the gas valve 1 can be 225 degrees, and the rotation angle of the gas valve 1 can also be 220 degrees.

[0077] Specifically, the valve stem of the gas valve 1 is rotated, thereby driving the valve core 200 to rotate, and first the first air hole 211 on the valve core 200 is connected to the first air hole 121 on the valve body 100 to discharge gas, and then the valve core 200 is rotated continuously, and the second air hole 212 on the valve core 200 is connected to the second air hole 131 on the valve body 100 to discharge gas. When the first air hole 211 on the valve core 200 and the first air hole 121 on the valve body 100 are about to be offset, the second air hole 212 on the valve core 200 is connected to the first air hole 121 on the valve body 100 to discharge gas, thereby achieving the effect of connecting fire, and at this time, gas comes out of both the first outlet channel 120 and the second outlet channel 130 on the valve body 100. Then continue to rotate the valve core 200, the second air hole 212 on the valve core 200 is disconnected from the second air hole 131 on the valve body 100, the outer ring gas channel of the gas stove burner is closed, and only the inner ring gas channel is left to provide gas combustion and ignition. At this time, the second air hole 131 of the valve body 100 can borrow the third air hole 213 or not borrow the third air hole 213, and the third air hole 213 is formed as a micro-fire hole. If the third air hole 213 is borrowed, the gas outlet range of the second outlet channel 130 can be extended. If the third air hole 213 is not borrowed, the fire range of the outer ring gas channel will be reduced. Both solutions are feasible. Then continue to rotate the valve core 200, when the second air hole 212 on the valve core 200 is about to be disconnected from the first air hole 121 on the valve body 100, the first air hole 121 will be connected to the third air hole 213 (i.e., micro-fire hole) on the valve core 200 again, so as to achieve fire connection and minimum fire. The staggered layout of the holes of the valve core 200 cleverly realizes the connection transition with the first air outlet channel 120 and the second air outlet channel 130 of the valve body 100, making the flow regulation more linear.

[0078] Optionally, one side of the accommodating cavity has an opening, and the valve core is adapted to fit into the accommodating cavity through the opening. The cross section of the accommodating cavity gradually decreases from the opening side to the side away from the opening. In other words, at least a portion of the inner peripheral wall of the accommodating cavity is formed as a conical surface, and at least a portion of the outer peripheral wall of the valve core is formed as a conical surface that fits with the inner peripheral wall of the accommodating cavity.

[0079] According to a specific embodiment of the present invention, a gas valve 1 includes a valve body and a valve core. The valve body has a receiving cavity, an air inlet channel, a first air outlet channel and a second air outlet channel. The first air outlet channel is suitable for connecting to the inner ring gas channel of the gas stove burner and is connected to the receiving cavity through the first air vent. The second air outlet channel is suitable for connecting to the outer ring gas channel of the gas stove burner and is connected to the receiving cavity through the second air vent. The valve core is rotatably fitted in the receiving cavity. The valve core has a sub-gas cavity and an air through hole connected to the sub-gas cavity. The air inlet channel is connected to the sub-gas cavity. The air through hole can be selectively connected to the first air vent and / or the second air vent when the valve core rotates.

[0080] The air hole includes a connected inner hole section and an outer hole section in sequence in the radial direction of the valve core, and the opening area of ​​the inner hole section is smaller than the opening area of ​​the outer hole section. The valve core can rotate in an angle range of 0-225 degrees. The air hole includes a first air hole, a second air hole and a third air hole arranged at intervals, the first air hole is suitable for communicating with the first air hole, the second air hole is suitable for communicating with the first air hole and the second air hole, and the third air hole is suitable for communicating with the first air hole. In the axial direction of the valve core, the heights of the first air hole and the third air hole are higher than the height of the second air hole. In the circumferential direction of the valve core, the first air hole, the second air hole and the third air hole are arranged adjacent to each other, and the second air hole is located between the first air hole and the third air hole.

[0081] The first vent hole includes a first opening portion and a second opening portion that are connected in sequence in the extension direction of the accommodating cavity, the first opening portion is suitable for being connected to the first air hole or the third air hole, and the second opening portion is suitable for being connected to the second air hole. The first vent hole is inclined from the side wall of the accommodating cavity to the first air outlet channel. In the circumferential direction of the accommodating cavity, the first vent hole is arranged adjacent to the second vent hole, and the height of the first vent hole is higher than the height of the second vent hole.

[0082] The air inlet of the air inlet channel, the air outlet of the first air outlet channel and the air outlet of the second air outlet channel have the same opening direction, and the center lines of the air inlet channel, the first air outlet channel and the second air outlet channel are located in the same plane.

[0083] The valve body also includes a gas storage chamber, which is connected between the air inlet channel and the accommodating chamber. The gas storage chamber is provided with a guide slope suitable for guiding the gas to flow into the gas distribution chamber. The thickness of the valve body is less than or equal to 18 mm.

[0084] Further, the gas valve 1 has a first working state, a second working state, a third working state, a fourth working state and a fifth working state. In the first working state, the first gas hole 211 is connected to the first gas outlet channel 120 and the second gas hole 212 is disconnected from the first gas outlet channel 120 and the second gas outlet channel 130. In the second working state, the first gas hole 211 is connected to the first gas outlet channel 120 and the second gas hole 212 is connected to the second gas outlet channel 130. In the third working state, the second gas hole 212 is connected to the first gas outlet channel 120 and the first gas hole 211 is disconnected from the first gas outlet channel 120 and the second gas outlet channel 130. In the fourth working state, the second gas hole 212 is connected to the first gas outlet channel 120 and the second gas outlet channel 130. In the fifth working state, the third gas hole 213 is connected to the first gas outlet channel 120. Specifically, the third gas hole 213 can be formed as a micro-fire hole.

[0085] During the rotation of the valve core 200 of the gas valve 1, the gas valve 1 switches among the first working state, the second working state, the fourth working state, the third working state and the fifth working state in sequence, and the gas output of the gas valve 1 shows a trend of first increasing and then decreasing, with the maximum firepower appearing in the fourth working state and the minimum firepower appearing in the fifth working state.

[0086] The following describes a gas stove according to an embodiment of the present invention. The gas stove according to the embodiment of the present invention comprises a gas valve 1 according to the above embodiment of the present invention.

[0087] Since the thickness of the gas valve 1 determines the thickness of the gas stove, an ultra-thin valve is a necessary condition for an ultra-thin stove.

[0088] The gas stove according to the embodiment of the present invention utilizes the gas valve 1 according to the above embodiment of the present invention, and the gas valve 1 has the advantages of large valve core rotation angle, good flow regulation linearity of the gas valve, and continuous fire without flameout.

[0089] Other structures and operations of the gas stove according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0090] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more. In the description of the present invention, the first feature "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features not being in direct contact but being in contact through another feature between them.

[0091] In the description of the present invention, “on”, “over” and “above” a first feature from a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0092] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0093] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0094] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A gas valve, characterized in that: include: A valve body, the valve body having an accommodating cavity, an air inlet channel, a first air outlet channel and a second air outlet channel, the first air outlet channel being adapted to be connected to an inner ring gas channel of a gas stove burner and being connected to the accommodating cavity through a first air vent, the second air outlet channel being adapted to be connected to an outer ring gas channel of the gas stove burner and being connected to the accommodating cavity through a second air vent; a valve core, the valve core is rotatably fitted in the accommodating cavity, the valve core has a sub-cavity and an air hole communicating with the sub-cavity, the air inlet channel is communicated with the sub-cavity, the air hole can be selectively communicated with the first air hole and / or the second air hole when the valve core rotates, and the air hole is always communicated with the first air outlet channel and / or the second air outlet channel when the valve core rotates; The gas holes include a first gas hole and a second gas hole arranged at intervals, the first gas hole is suitable for communicating with the first vent hole, the second gas hole is suitable for communicating with the first vent hole and the second vent hole, the gas valve has a first working state, a second working state and a third working state, In the first working state, the first air hole is connected to the first air outlet channel and the second air hole is disconnected from the first air outlet channel and the second air outlet channel; In the second working state, the first air hole is communicated with the first air outlet channel and the second air hole is communicated with the second air outlet channel; In the third working state, the second air hole is connected to the first air outlet channel and the first air hole is disconnected from the first air outlet channel; The gas valve also has a fourth working state, in which the second gas hole is connected with the first gas outlet channel and the second gas outlet channel; The gas hole further includes a third gas hole, the third gas hole is adapted to communicate with the first gas hole, the flow area of ​​the third gas hole is smaller than the flow area of ​​the first gas hole and smaller than the flow area of ​​the second gas hole, and the gas valve further has a fifth working state, in which the third gas hole is communicated with the first gas outlet channel; During the rotation of the valve core, the gas valve switches among the first working state, the second working state, the fourth working state, the third working state and the fifth working state in sequence, and the gas output of the gas valve shows a trend of first increasing and then decreasing.

2. The gas valve according to claim 1, characterized in that: The air holes include a first air hole, a second air hole and a third air hole arranged at intervals, the first air hole is suitable for communicating with the first air hole, the second air hole is suitable for communicating with the first air hole and the second air hole, and the third air hole is suitable for communicating with the first air hole.

3. The gas valve according to claim 2, characterized in that: In the axial direction of the valve core, the heights of the first air hole and the third air hole are higher than the height of the second air hole.

4. The gas valve according to claim 2, characterized in that: The first air hole, the second air hole and the third air hole are arranged adjacent to each other in the circumferential direction of the valve core, and the second air hole is located between the first air hole and the third air hole.

5. The gas valve according to claim 2, characterized in that: The first ventilation hole includes a first opening portion and a second opening portion that are connected in sequence in the extension direction of the accommodating cavity, the first opening portion is suitable for connecting with the first air hole or the third air hole, and the second opening portion is suitable for connecting with the second air hole or the third air hole.

6. The gas valve according to claim 1, characterized in that: The first vent hole is arranged on the side wall of the accommodating cavity, and the first vent hole is arranged obliquely along the thickness direction of the side wall.

7. The gas valve according to claim 1, characterized in that: In the circumferential direction of the accommodating cavity, the angle between the second vent hole and the first vent hole is less than or equal to 90 degrees, and in the axial direction of the accommodating cavity, the height of the first vent hole is higher than the height of the second vent hole.

8. The gas valve according to claim 1, characterized in that: The air inlet of the air inlet channel, the air outlet of the first air outlet channel and the air outlet of the second air outlet channel have the same opening direction, and the center lines of the air inlet channel, the first air outlet channel and the second air outlet channel are located in the same plane.

9. The gas valve according to claim 1, characterized in that: The thickness of the valve body is less than or equal to 18 mm.

10. A gas stove, characterized in that: The invention comprises a gas valve according to any one of claims 1 to 9.

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