Gas cock and gas stove

Abstract

The present invention provides a gas cock and a gas stove, and relates to the technical field of stoves. The gas cock comprises a valve body, a valve core and a valve stem, wherein a valve cavity is provided in the valve body, and the side of the valve cavity is connected with an inner ring channel and an outer ring channel; the valve core is rotatably embedded in the valve cavity, and a ventilation cavity is provided in the valve core, and the side wall of the ventilation cavity is provided with an inner ring vent hole and an outer ring vent hole; the inner wall of the ventilation cavity is provided with an annular boss along its circumference; the valve stem is inserted into the ventilation cavity from top to bottom, and the valve stem is provided with a baffle, and when the valve stem is pressed down, the baffle can separate the ventilation cavity into an upper chamber and a lower chamber with the annular boss, and the upper chamber and the lower chamber can be connected through a pressure relief channel. The gas stove comprises a burner and the above-mentioned gas cock, the outer ring channel is connected with the outer ring nozzle of the burner, and the inner ring channel is connected with the inner ring nozzle. When the gas cock is ignited, the inner ring fire of the burner can be stably ignited, and the ignition time when the outer ring fire needs to be used is also short, and the user experience is good.

Description

Technical Field

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

[0002] Gas stoves are widely used in kitchen cooking. The external gas supply device is generally connected to the gas cock of the gas stove. The user can open its solenoid valve and start the ignition component by pressing down the valve stem of the gas cock. The external gas supply device can supply gas to the gas cock, and the gas then flows out through the fire cover and is ignited by the ignition component to emit flames. In addition, the user can adjust the gas supply flow by rotating the valve stem, thereby adjusting the flame size.

[0003] In the prior art, in order to reduce the large amount of gas supply during ignition, after the first ignition fails, the gas mixture is not easy to dissipate instantly, and the next ignition is prone to explosion. The gas stopcock structure is improved. When the stove is ignited, the gas can only be supplied to the inner ring fire cover to reduce the gas supply during ignition. However, due to the high air pressure and fast flow rate of the inner ring gas supply, the inner ring fire is easy to flame out and the ignition time is long, and the user experience is poor. Summary of the invention

[0004] The object of the present invention is to provide a gas cock and a gas stove to alleviate the technical problems in the prior art that the inner ring fire is easy to fall out and the ignition time is long when the gas cock is ignited.

[0005] The embodiment provides a gas cock valve, comprising a valve body, a valve core and a valve stem, wherein a valve cavity is provided in the valve body, a side portion of the valve cavity is connected with an inner ring channel and an outer ring channel located above the inner ring channel, and a bottom portion of the valve cavity is connected with an air intake channel; the valve core is rotatably embedded in the valve cavity, and a ventilation cavity connected with the air intake channel is provided in the valve core, and an inner ring ventilation hole corresponding to the inner ring channel and an outer ring ventilation hole corresponding to the outer ring channel are provided on a side wall of the ventilation cavity;

[0006] The inner wall of the ventilation cavity is provided with an annular boss along its circumference, and the annular boss is located between the inner ring ventilation hole and the outer ring ventilation hole; the valve stem is inserted into the ventilation cavity from top to bottom, and the valve stem is provided with a baffle. When the valve stem is pressed downward, the baffle can work together with the annular boss to separate the ventilation cavity into an upper chamber and a lower chamber. The ventilation cavity is also provided with a pressure relief channel, and the upper chamber and the lower chamber can be connected through the pressure relief channel.

[0007] In an optional embodiment, the pressure relief channel includes a pressure relief hole provided on the side wall of the ventilation cavity, and the pressure relief hole corresponds to the inner ring channel;

[0008] And / or, when the valve stem is pressed downward, a gap is left between the baffle and the annular boss, and the gap forms the pressure relief channel.

[0009] In an optional embodiment, the minimum flow area of ​​the inner ring vent hole is smaller than the minimum flow area of ​​the inner ring channel.

[0010] In an optional embodiment, the inner ring channel includes an outer channel and an inner channel, the inner channel is connected between the valve cavity and the outer channel, and the flow area of ​​the inner channel is smaller than the flow area of ​​the outer channel;

[0011] The inner ring vent includes an outer vent and an inner vent, the inner vent is connected between the ventilation cavity and the outer vent, the flow area of ​​the inner vent is smaller than the flow area of ​​the outer vent, and the outer vent matches the inner channel.

[0012] In an optional embodiment, the pressure relief channel includes a pressure relief hole provided on the side wall of the ventilation cavity, and the pressure relief hole corresponds to the inner ring channel; the barrier member includes a barrier boss provided along the circumference of the valve stem, and the barrier boss matches the inner ring hole of the annular boss;

[0013] Alternatively, the barrier member comprises a first sealing ring sleeved on the valve stem, and the outer diameter of the first sealing ring is larger than the aperture of the inner hole of the annular boss.

[0014] In an optional embodiment, the valve stem is provided with a blocking boss along its circumference, the blocking boss is located above the outer ring vent hole, and the blocking boss matches the vent cavity.

[0015] In an optional embodiment, the outer side wall of the blocking boss is provided with a first groove along its circumference, and a second sealing ring is embedded in the first groove;

[0016] And / or, the blocking boss is sleeved on the valve stem, the inner side wall of the blocking boss is provided with a second groove, and a third sealing ring is embedded in the second groove.

[0017] In an optional embodiment, the valve stem includes a torsion rod and a push rod fixed to the bottom of the torsion rod, and the barrier member and the sealing boss are both provided on the push rod; the push rod movable sleeve is provided with a pressure ring, the pressure ring is located above the sealing boss, and an elastic member is provided between the bottom end of the torsion rod and the pressure ring.

[0018] An embodiment also provides a gas stove, comprising a burner and the above-mentioned gas stopcock, wherein the injector of the burner comprises an outer ring nozzle and an inner ring nozzle, the outer ring channel of the gas stopcock is connected to the outer ring nozzle, and the inner ring channel of the gas stopcock is connected to the inner ring nozzle.

[0019] The beneficial effects of the gas cock and the gas stove of the present invention include:

[0020] The present invention provides a gas stopcock and a gas stove, wherein the gas stopcock includes a valve body and a valve core as a gas regulating base, and also includes a valve stem for controlling ignition and gas flow regulation, when the valve stem is pressed down, the baffle on the valve stem and the annular boss on the valve core can jointly separate the ventilation cavity inside the valve core into an upper chamber and a lower chamber, and at this time, the pressure relief channel in the gas stopcock can transport the gas in the lower chamber to the upper chamber to supply gas to the outer ring fire cover and reduce the gas pressure of the inner ring fire cover; wherein the gas stove includes a burner and the above-mentioned gas stopcock, the inner ring channel of the gas stopcock supplies gas to the inner ring nozzle of the burner, and the outer ring channel supplies gas to the outer ring nozzle.

[0021] When in use, the external air supply device is connected to the air inlet channel of the valve body, and a solenoid valve capable of controlling the on-off state of the air inlet channel is provided in the air inlet channel. Initially, the valve stem is in an upwardly popped-up state, the solenoid valve is in a closed state, and the external air supply device cannot supply air to the ventilation cavity of the valve core; the inner ring vent hole of the valve core is connected to the inner ring channel of the valve cavity, the outer ring vent hole is connected to the outer ring channel, and the baffle is located above the annular boss. When a gas stove is needed for cooking, the valve stem is pressed downward to perform the ignition operation. On the one hand, the valve stem moves downward, and the bottom end of the valve stem can open the solenoid valve, so that the external air supply device can supply air to the ventilation cavity of the valve core through the air inlet channel, and the downward movement of the valve stem can trigger the ignition assembly. On the other hand, the valve stem drives the baffle to move downward, and the baffle moves to the position of the annular boss, and together with the annular boss, divides the ventilation chamber inside the valve core into an upper chamber and a lower chamber distributed vertically. After the gas in the air intake channel enters the lower chamber, a part of the gas flows into the inner ring channel through the inner ring air hole, and then supplies gas to the inner ring nozzle of the burner. The mixed gas after being mixed with air by the inner ring nozzle then reaches the inner ring fire cover to be ignited and sprayed; another part of the gas in the lower chamber flows into the upper chamber through the pressure relief channel, and then flows into the outer ring channel through the outer ring air hole, and then supplies gas to the outer ring nozzle of the burner. The mixed gas after being mixed with air by the outer ring nozzle then reaches the outer ring fire cover to be ignited and sprayed.

[0022] After ignition is completed, the solenoid valve can be in an open state under the action of the thermocouple, and the user can rotate the valve stem, which drives the valve core to rotate to adjust the gas supply flow. After the adjustment is completed, the valve stem is released, and the valve stem returns to its original position, and the baffle returns to its original position. The ventilation cavity is connected through the inner hole of the annular boss to form a large chamber, and the gas in the intake channel enters the ventilation cavity and supplies gas to the inner ring channel through the inner ring ventilation hole, and supplies gas to the outer ring channel through the outer ring ventilation hole.

[0023] When the gas cock valve is ignited, the valve stem can drive the baffle and the annular boss to separate the ventilation cavity into an upper cavity and a lower cavity, and the upper cavity and the lower cavity can be connected through the pressure relief channel, so that the gas entering the lower cavity can be diverted to flow to the inner ring channel and the outer ring channel. On the one hand, the pressure relief channel can relieve the gas pressure of the lower cavity, thereby reducing the gas pressure flowing into the inner ring channel, and then reducing the gas pressure flowing to the inner ring fire cover, correspondingly reducing the flameout phenomenon caused by the fast flow rate of the inner ring fire, and improving the ignition stability of the inner ring fire; on the other hand, compared with the prior art, the ignition operation only ignites the inner ring fire, After the valve stem needs to be adjusted, the inner ring fire will ignite the outer ring fire. In the present application, the gas flowing into the upper chamber through the pressure relief channel can be supplied to the outer ring fire cover. This part of the gas can be ignited by the inner ring fire during the ignition operation, thereby reducing the ignition time when the outer ring fire is needed, thereby improving the user experience accordingly. On the other hand, since the flow area of ​​the pressure relief channel is smaller than the flow area of ​​the valve core, the amount of gas entering the upper chamber during the ignition process is less, and the corresponding output gas amount is also less. Even if the first ignition fails, the second ignition will less likely produce deflagration, thereby further improving the user experience and improving the safety of the gas stove. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic diagram of the structure of a gas cock provided in an embodiment of the present invention;

[0026] Figure 2 A cross-sectional schematic diagram of a gas cock provided in an embodiment of the present invention when the baffle member is a baffle boss;

[0027] Figure 3 A schematic cross-sectional view of another cross section when the barrier member in the gas cock provided by the embodiment of the present invention is a barrier boss;

[0028] Figure 4 A cross-sectional schematic diagram of a gas cock provided in an embodiment of the present invention when the barrier member is a first sealing ring;

[0029] Figure 5 A schematic cross-sectional view of a gas cock provided in an embodiment of the present invention when a pressure relief channel is formed by a gap between a baffle and an annular boss.

[0030] Icon: 100-valve body; 110-valve cavity; 120-inner ring channel; 121-outer channel; 122-inner channel; 123-connecting channel; 130-outer ring channel; 140-intake channel; 200-valve core; 210-venting cavity; 211-upper chamber; 212-lower chamber; 220-inner ring vent hole; 221-outer vent hole; 222-inner vent hole; 230-outer ring vent hole Air hole; 240-annular boss; 241-inner hole of the ring; 250-pressure relief hole; 260-gap; 300-valve stem; 310-torsion rod; 320-top rod; 330-blocking boss; 340-first sealing ring; 350-blocking boss; 351-second sealing ring; 352-third sealing ring; 360-pressure ring; 370-elastic member; 380-retaining ring; 400-micro switch. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] In the description of the present invention, it should be noted that the terms "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the invention is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply 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 limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0035] In addition, the terms "horizontal" and "vertical" do not mean that the components must be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0036] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0038] This embodiment provides a gas cock valve, such as Figure 1-Figure 3 As shown, the valve body 100, the valve core 200 and the valve stem 300 are included. The valve body 100 is provided with a valve cavity 110. The side of the valve cavity 110 is connected with an inner ring channel 120 and an outer ring channel 130 located above the inner ring channel 120. The bottom of the valve cavity 110 is connected with an air inlet channel 140. The valve core 200 is rotatably embedded in the valve cavity 110, and the valve core 200 is provided with a ventilation cavity 210 connected with the air inlet channel 140. The side wall of the ventilation cavity 210 is provided with an inner ring ventilation hole 220 corresponding to the inner ring channel 120 and an outer ring ventilation hole 220 corresponding to the outer ring channel 130. The outer ring vent hole 230 corresponds to the inner ring vent hole 230; the inner wall of the vent cavity 210 is provided with an annular boss 240 along its circumference, and the annular boss 240 is located between the inner ring vent hole 220 and the outer ring vent hole 230; the valve stem 300 is inserted into the vent cavity 210 from top to bottom, and the valve stem 300 is provided with a baffle. When the valve stem 300 is pressed downward, the baffle can work together with the annular boss 240 to separate the vent cavity 210 into an upper chamber 211 and a lower chamber 212. The vent cavity 210 is also provided with a pressure relief channel, and the upper chamber 211 and the lower chamber 212 can be connected through the pressure relief channel.

[0039] This embodiment also provides a gas stove, including a burner and the above-mentioned gas stopcock, the injector of the burner includes an outer ring nozzle and an inner ring nozzle, the outer ring channel 130 of the gas stopcock is connected to the outer ring nozzle, and the inner ring channel 120 of the gas stopcock is connected to the inner ring nozzle.

[0040] The present embodiment provides a gas stopcock and a gas stove, wherein the gas stopcock includes a valve body 100 and a valve core 200 as a gas regulating base, and also includes a valve stem 300 for controlling ignition and gas flow regulation. When the valve stem 300 is pressed down, the baffle on the valve stem 300 and the annular boss 240 on the valve core 200 can jointly separate the ventilation cavity 210 inside the valve core 200 into an upper chamber 211 and a lower chamber 212, and at this time, the pressure relief channel in the gas stopcock can transport the gas in the lower chamber 212 to the upper chamber 211 to supply gas to the outer ring fire cover and reduce the gas pressure of the inner ring fire cover; wherein, the gas stove includes a burner and the above-mentioned gas stopcock, the inner ring channel 120 of the gas stopcock supplies gas to the inner ring nozzle of the burner, and the outer ring channel 130 supplies gas to the outer ring nozzle.

[0041] When in use, the external air supply device is connected to the air inlet passage 140 of the valve body 100, and an electromagnetic valve capable of controlling the on and off state of the air inlet passage 140 is provided in the air inlet passage 140. Initially, the valve stem 300 is in an upward pop-up state, and the electromagnetic valve is in a closed state, and the external air supply device cannot supply air to the ventilation cavity 210 of the valve core 200; the inner ring air hole 220 of the valve core 200 is connected to the inner ring channel 120 of the valve cavity 110, and the outer ring air hole 230 is connected to the outer ring channel 130, and the barrier member is located above the annular boss 240. When it is necessary to use a gas stove for cooking, press the valve stem 300 downward to perform the ignition operation. On the one hand, the valve stem 300 moves downward, and the bottom end of the valve stem 300 can open the solenoid valve, so that the external air supply device can supply air to the ventilation cavity 210 of the valve core 200 through the air inlet channel 140, and the downward movement of the valve stem 300 can trigger the ignition component (specifically, the valve stem 300 can open the ignition needle and thermocouple and other components of the burner through the micro switch 400 on the valve body 100). On the other hand, the valve stem 300 drives the baffle to move downward, and the baffle moves to the position of the annular boss 240, and together with the annular boss 240, the ventilation cavity 210 inside the valve core 200 is divided into an upper chamber 211 and a lower chamber 212 distributed vertically. After the gas in the air intake channel 140 enters the lower chamber 212, a part of the gas flows into the inner ring channel 120 through the inner ring air hole 220, and then supplies gas to the inner ring nozzle of the burner. The mixed gas after being mixed with air by the inner ring nozzle then reaches the inner ring fire cover to be ignited and sprayed; the other part of the gas flows into the upper chamber 211 through the outer channel 121 and the pressure relief channel, and then flows into the outer ring channel 130 through the outer ring air hole 230, and then supplies gas to the outer ring nozzle of the burner. The mixed gas after being mixed with air by the outer ring nozzle then reaches the outer ring fire cover to be ignited and sprayed.

[0042] After ignition is completed, the solenoid valve can be in an open state under the action of the thermocouple, and the user can rotate the valve stem 300, and the valve stem 300 drives the valve core 200 to rotate to adjust the gas supply flow. After the adjustment is completed, the valve stem 300 is released, the valve stem 300 returns to its original position, and the baffle returns to its original position. The ventilation cavity 210 is connected through the inner hole of the annular boss 240 to form a large chamber, and the gas in the intake channel 140 enters the ventilation cavity 210 and supplies gas to the inner ring channel 120 through the inner ring ventilation hole 220, and supplies gas to the outer ring channel 130 through the outer ring ventilation hole 230.

[0043] When the gas cock valve is ignited, the valve stem 300 can drive the baffle and the annular boss 240 to separate the ventilation chamber 210 into two chambers, an upper chamber 211 and a lower chamber 212, and the upper chamber 211 and the lower chamber 212 can be connected through the pressure relief channel, so that the gas entering the lower chamber 212 can be diverted to flow to the inner ring channel 120 and the outer ring channel 130. On the one hand, the pressure relief channel can relieve the gas pressure of the lower chamber 212, thereby reducing the gas pressure flowing into the inner ring channel 120, and then reducing the gas pressure flowing to the inner ring fire cover, correspondingly reducing the flameout phenomenon caused by the fast gas flow rate of the inner ring fire, and improving the ignition stability of the inner ring fire; on the other hand, compared with the prior art In the present application, the gas flowing into the upper chamber 211 through the pressure relief channel can be supplied to the outer ring fire cover, and this part of the gas can be ignited by the inner ring fire during the ignition operation, thereby reducing the ignition time when the outer ring fire is required, thereby improving the user experience accordingly; on the other hand, since the flow area of ​​the pressure relief channel is smaller than the flow area of ​​the valve core 200, during the ignition process, the amount of gas entering the upper chamber 211 is small, and the corresponding output gas amount is also small. Even if the first ignition fails, the second ignition will rarely produce a deflagration phenomenon, thereby further improving the user experience and improving the safety of the gas stove.

[0044] Optionally, in this embodiment, the minimum flow area of ​​the inner ring vent hole 220 may be smaller than the minimum flow area of ​​the inner ring channel 120. The minimum flow area of ​​the inner ring vent hole 220 determines the ventilation volume between the gas in the lower chamber 212 and the inner ring channel 120. The minimum flow area of ​​the inner ring vent hole 220 is smaller than the minimum flow area of ​​the inner ring channel 120, which can effectively reduce the gas supply volume from the lower chamber 212 to the inner ring channel 120, and correspondingly reduce the gas pressure and flow rate of the inner ring fire cover, further reduce the de-ignition phenomenon of the inner ring fire, and improve the ignition stability of the inner ring fire.

[0045] Specifically, in this embodiment, Figure 2As shown, the inner ring channel 120 may include an outer channel 121 and an inner channel 122, the inner channel 122 is connected between the valve cavity 110 and the outer channel 121, and the flow area of ​​the inner channel 122 is smaller than the flow area of ​​the outer channel 121; the inner ring vent 220 includes an outer vent 221 and an inner vent 222, the inner vent 222 is connected between the ventilation cavity 210 and the outer vent 221, the flow area of ​​the inner vent 222 is smaller than the flow area of ​​the outer vent 221, and the outer vent 221 matches the inner channel 122. This is a specific form of the inner ring channel 120 and the inner ring air vent 220. During ignition, the gas in the lower chamber 212 flows through the inner air vent 222 and the outer air vent 221 of the inner ring air vent 220 in sequence, enters the inner channel 122 of the inner ring channel 120, and then enters the outer channel 121, thereby supplying gas to the inner ring nozzle; wherein, the outer air vent 221 of the inner ring air vent 220 and the inner channel 122 of the inner ring channel 120 serve as connecting holes between the valve core 200 and the valve body 100, and the apertures of the two are approximately equal, which can improve the connection sealing between the inner ring air vent 220 and the inner ring channel 120 and reduce the occurrence of gas leakage through the connection between the two. In addition, the flow area of ​​the inner air hole 222 is smaller than that of the outer air hole 221, and the flow area of ​​the outer air hole 221 is smaller than that of the outer channel 121. Therefore, the flow area of ​​the inner air hole 222 is significantly different from that of the outer channel 121, thereby further limiting the gas supply from the lower chamber 212 to the inner ring channel 120, reducing the gas pressure and flow rate of the inner ring fire cover, further reducing the flameout phenomenon of the inner ring fire, and improving the ignition stability of the inner ring fire.

[0046] Optionally, in this embodiment, if Figure 2 As shown, the pressure relief channel may include a pressure relief hole 250 provided on the side wall of the ventilation cavity 210, and the pressure relief hole 250 corresponds to the inner ring channel 120. This is a specific form of the pressure relief channel. During the ignition operation, the gas in the lower chamber 212 flows into the inner ring channel 120 through the inner ring vent hole 220, a part of the gas flows to the inner ring nozzle to supply gas for the inner ring fire cover, and the other part of the gas flows into the upper chamber 211 through the pressure relief hole 250, and then flows into the outer ring channel 130 through the outer ring vent hole 230, and then flows to the outer ring nozzle to supply gas for the outer ring fire cover. Specifically, when the inner ring channel 120 includes the inner channel 122 and the outer channel 121, a connecting channel 123 may also be connected to the inner side of the outer channel 121, and the flow area of ​​the connecting channel 123 is smaller than that of the outer channel 121, and preferably, the flow area of ​​the pressure relief hole 250 may be consistent with the flow area of ​​the connecting channel 123.

[0047] In addition to the above-mentioned forms, in this embodiment, the pressure relief channel Figure 5As shown, when the valve stem 300 is pressed down, a gap 260 may be left between the baffle and the annular boss 240, and the gap 260 forms a pressure relief channel. During the ignition operation, the baffle blocks the inner ring hole 241 of part of the annular boss 240, and a part of the gas in the lower chamber 212 can flow into the inner ring channel 120 through the inner ring vent 220, and the other part of the gas can flow into the upper chamber 211 through the gap 260 between the baffle and the annular boss 240, and then supply gas to the outer ring channel 130 through the outer ring vent 230, thereby playing a role in pressure relief and diversion. It should be noted that the pressure relief channel may include one of the pressure relief hole 250 and the gap 260, or both of them.

[0048] Specifically, in this embodiment, Figure 2 As shown, the baffle member may include a baffle boss 330 arranged along the circumference of the valve stem 300, and the baffle boss 330 matches the inner ring hole 241 of the annular boss 240. This is a specific form of the baffle member when the pressure relief channel adopts the form of the pressure relief hole 250. During the ignition operation, the valve stem 300 drives the baffle boss 330 to move downward, and the baffle boss 330 completely blocks the inner ring hole 241 of the annular boss 240, and separates the ventilation cavity 210 into an upper chamber 211 and a lower chamber 212. Preferably, the baffle boss 330 can be integrally formed with the valve stem 300. It should be pointed out that when the pressure relief channel adopts the form of the gap 260, it can also be the above-mentioned baffle boss 330, and the outer dimensions of the baffle boss 330 are smaller than the inner ring hole 241 of the annular boss 240.

[0049] In addition to the above forms, the barrier member may also be Figure 4 As shown, the barrier member may also include a first sealing ring 340 sleeved on the valve stem 300, and the outer diameter of the first sealing ring 340 is larger than the aperture of the inner ring hole 241 of the annular boss 240. The valve stem 300 drives the first sealing ring 340 to move downward, and the first sealing ring 340 is blocked between the valve stem 300 and the annular boss 240, dividing the ventilation cavity 210 into an upper chamber 211 and a lower chamber 212.

[0050] In this embodiment, Figure 2 As shown, the valve stem 300 can be provided with a blocking boss 350 along its circumference, the blocking boss 350 is located above the outer ring vent hole 230, and the blocking boss 350 matches the vent cavity 210. This is a specific form of blocking the upper part of the vent cavity 210 of the valve core 200 in the gas cock (other forms may also be used), the blocking boss 350 acts as a blocking member to block the gap between the side wall of the vent cavity 210 and the valve stem 300, and during the up and down movement of the valve stem 300, the blocking boss 350 is always located above the outer ring vent hole 230, thereby effectively blocking the top of the upper chamber 211.

[0051] In this embodiment, Figure 2 As shown, a first groove can be provided along the circumference of the outer wall of the blocking boss 350, and a second sealing ring 351 is embedded in the first groove. The second sealing ring 351 can block the gap between the blocking boss 350 and the side wall of the ventilation cavity 210, and improve the sealing performance of the blocking boss 350 on the top of the upper chamber 211 while ensuring that the blocking boss 350 can move up and down smoothly with the valve stem 300.

[0052] When the blocking boss 350 is sleeved on the valve stem 300, Figure 2 As shown, a second groove may be provided on the inner side wall of the blocking boss 350, and a third sealing ring 352 may be embedded in the second groove. The third sealing ring 352 can block the gap between the blocking boss 350 and the valve stem 300 to improve the connection sealing between the two and reduce gas leakage.

[0053] In this embodiment, Figure 2 As shown, the valve stem 300 includes a torsion rod 310 and a mandrel 320 fixed at the bottom of the torsion rod 310, and the barrier and the blocking boss 350 are both arranged on the mandrel 320; the mandrel 320 is provided with a pressing ring 360, which is located above the blocking boss 350, and an elastic member 370 is provided between the bottom end of the torsion rod 310 and the pressing ring 360. The elastic member 370 drives the pressing ring 360 to push the blocking boss 350 downward, so as to limit the position where the blocking boss 350 is installed on the mandrel 320, and reduce the occurrence of the blocking boss 350 sliding up and down relative to the mandrel 320; specifically, the bottom of the blocking boss 350 can be limited to the mandrel 320 by a retaining ring 380. In addition, when the third sealing ring 352 is disposed on the top of the blocking boss 350, the elastic member 370 can also push the pressing ring 360 downward to press the third sealing ring 352, so that the third sealing ring 352 can be tightly sealed between the blocking boss 350 and the ejector rod 320. Specifically, the elastic member 370 can be a compression spring.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A gas cock valve, comprising a valve body (100), a valve core (200) and a valve stem (300), wherein a valve cavity (110) is provided in the valve body (100), a side portion of the valve cavity (110) is connected with an inner ring channel (120) and an outer ring channel (130) located above the inner ring channel (120), and a bottom portion of the valve cavity (110) is connected with an air intake channel (140); the valve core (200) is rotatably embedded in the valve cavity (110), and a ventilation cavity (210) is provided in the valve core (200) and is connected with the air intake channel (140), and a side wall of the ventilation cavity (210) is provided with an inner ring ventilation hole (220) corresponding to the inner ring channel (120) and an outer ring ventilation hole (230) corresponding to the outer ring channel (130); It is characterized in that The inner wall of the ventilation cavity (210) is provided with an annular boss (240) along its circumference, and the annular boss (240) is located between the inner ring ventilation hole (220) and the outer ring ventilation hole (230); the valve stem (300) is inserted into the ventilation cavity (210) from top to bottom, and the valve stem (300) is provided with a baffle, and when the valve stem (300) is pressed downward, the baffle can work together with the annular boss (240) to block the ventilation cavity (210) into an upper chamber (211) and a lower chamber (212); the ventilation cavity (210) is also provided with a pressure relief channel, and the upper chamber (211) and the lower chamber (212) can be connected through the pressure relief channel; The minimum flow area of ​​the inner ring vent hole (220) is smaller than the minimum flow area of ​​the inner ring channel (120); The valve stem (300) is provided with a blocking boss (350) along its circumference, the blocking boss (350) is located above the outer ring vent hole (230), and the blocking boss (350) matches the vent cavity (210).

2. The gas cock valve according to claim 1, characterized in that: The pressure relief channel comprises a pressure relief hole (250) provided on a side wall of the ventilation cavity (210), and the pressure relief hole (250) corresponds to the inner ring channel (120); And / or, when the valve stem (300) is pressed downward, a gap (260) is left between the barrier and the annular boss (240), and the gap (260) forms the pressure relief channel.

3. The gas cock valve according to claim 1, characterized in that: The inner ring channel (120) comprises an outer channel (121) and an inner channel (122), the inner channel (122) being connected between the valve cavity (110) and the outer channel (121), and the flow area of ​​the inner channel (122) is smaller than the flow area of ​​the outer channel (121); The inner ring vent hole (220) comprises an outer vent hole (221) and an inner vent hole (222); the inner vent hole (222) is connected between the vent cavity (210) and the outer vent hole (221); the flow area of ​​the inner vent hole (222) is smaller than the flow area of ​​the outer vent hole (221); and the outer vent hole (221) matches the inner channel (122).

4. The gas cock valve according to claim 1, characterized in that: The pressure relief channel comprises a pressure relief hole (250) arranged on the side wall of the ventilation cavity (210), and the pressure relief hole (250) corresponds to the inner ring channel (120); the barrier member comprises a barrier boss (330) arranged along the circumference of the valve stem (300), and the barrier boss (330) matches the inner ring hole (241) of the annular boss (240); Alternatively, the barrier member comprises a first sealing ring (340) sleeved on the valve stem (300), and the outer diameter of the first sealing ring (340) is larger than the aperture of the inner ring hole (241) of the annular boss (240).

5. The gas cock valve according to claim 1, characterized in that: The outer side wall of the blocking boss (350) is provided with a first groove along its circumference, and a second sealing ring (351) is embedded in the first groove; And / or, the blocking boss (350) is sleeved on the valve stem (300), and the inner side wall of the blocking boss (350) is provided with a second groove, and a third sealing ring (352) is embedded in the second groove.

6. The gas cock valve according to claim 5, characterized in that: The valve stem (300) includes a torsion rod (310) and a push rod (320) fixed to the bottom of the torsion rod (310), and the baffle and the sealing boss (350) are both arranged on the push rod (320); the push rod (320) is movably sleeved with a pressure ring (360), and the pressure ring (360) is located above the sealing boss (350), and an elastic member (370) is provided between the bottom end of the torsion rod (310) and the pressure ring (360).

7. A gas stove, characterized in that: It comprises a burner and a gas stopcock as claimed in any one of claims 1 to 6, wherein the ejector of the burner comprises an outer ring nozzle and an inner ring nozzle, the outer ring channel (130) of the gas stopcock is connected to the outer ring nozzle, and the inner ring channel (120) of the gas stopcock is connected to the inner ring nozzle.

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