Section valve, burner and gas cooker containing same

Abstract

The present invention discloses a sectional valve, a burner and a gas cooker including the same. The sectional valve comprises a valve body, a valve needle and a closure rotatably connected to the valve body, the valve needle is inserted into the closure, the closure has an upper closure and a lower closure which are arranged in a split manner and are located at different heights, an inner ring air supply channel and an outer ring air supply channel are arranged on the outer peripheral sides of the valve body corresponding to the upper closure and the lower closure, an inner ring flow hole and an outer ring flow hole which are connected to the inner ring air supply channel and the outer ring air supply channel are respectively arranged on the outer peripheral sides of the upper closure and the lower closure, at least one driving groove is provided on the corresponding side parts of the upper closure and the lower closure, and the two driving grooves of the upper closure and the lower closure are correspondingly arranged along the height direction; the circumferential protrusion of the valve needle is provided with a protrusion, and the two sides of the end of the protrusion respectively extend into the driving grooves provided in the upper closure and the lower closure, and the dimension of the protrusion along the height direction is not greater than the dimension of any driving groove along the height direction.

Description

Technical Field

[0001] The present invention particularly relates to a stage valve, a burner and a gas cooker comprising the same. Background Art

[0002] The section valve is a valve body that controls the firepower of the burner. The section valve realizes section adjustment (gas flow adjustment) by setting multiple flow holes of different sizes at intervals on the side of the valve body's shutter. When the valve stem is rotated to drive the shutter to rotate, the flow holes of different sizes are correspondingly connected to the gas channels of the inner ring or outer ring.

[0003] However, due to the size limitation of the closure, the number of flow holes in the existing sectional valve is relatively fixed when setting the flow holes, which results in a small number of fire power levels corresponding to the sectional valve. Nowadays, the variety of food on the user's table is increasing, and the fire power used for cooking different foods is also different. The existing fire power levels are no longer sufficient to meet the cooking needs of users. Therefore, when the fire power level is insufficient, users have to use a lower level for cooking, which not only wastes gas, but also makes the cooked food lose its original taste, thereby causing a poor user experience. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of the prior art that the stage valve has few stage adjustments and cannot meet the cooking needs of users, and to provide a stage valve, a burner and a gas cooker containing the same.

[0005] The present invention solves the above technical problems through the following technical solutions:

[0006] A sectional valve, the sectional valve comprising a valve body, a valve needle and a shutter rotatably connected to the valve body, the valve needle being inserted into the shutter, the shutter having an upper shutter and a lower shutter arranged in a split manner and located at different heights, an inner ring air supply channel and an outer ring air supply channel being provided on the outer peripheral sides of the valve body corresponding to the upper shutter and the lower shutter, an inner ring flow hole and an outer ring flow hole being respectively provided on the outer peripheral sides of the upper shutter and the lower shutter for communicating with the inner ring air supply channel and the outer ring air supply channel, at least one driving groove is provided on the corresponding side portions of the upper shutter and the lower shutter, and the two driving grooves of the upper shutter and the lower shutter are correspondingly provided along the height direction;

[0007] The valve needle is circumferentially protruded with a protrusion, and both sides of the end of the protrusion extend into the driving grooves provided in the upper closure and the lower closure respectively. The dimension of the protrusion along the height direction is not greater than the dimension of any of the driving grooves along the height direction.

[0008] In the present solution, the closure is formed into two separate upper and lower closures, and an inner ring air supply channel connected to the inner ring flow hole of the upper closure and an outer ring air supply channel connected to the outer ring flow hole of the lower closure are provided on the valve body, so that the upper and lower closures can be supplied with gas separately during the rotation process, and the two sides of the end of the protrusion of the valve needle extend into the driving groove of the upper closure and the driving groove of the lower closure respectively, so that the valve needle can drive the upper and lower closures to rotate at the same time when it rotates. In addition, the dimension of the protrusion along the height direction is not larger than the dimension of the driving groove along the height direction. That is to say, when the protrusion is separately clamped in the driving groove of the upper closure or the lower closure, the valve needle can separately drive the upper closure or the lower closure to rotate, thereby realizing the function of increasing the firepower gear of the stage valve.

[0009] Preferably, the outer circumference of the upper closer is provided with a plurality of inner ring segment holes of successively increasing sizes, the outer circumference of the lower closer is provided with a plurality of outer ring segment holes of successively increasing sizes, the size of the inner ring flow hole is larger than the inner ring segment hole, and the size of the outer ring flow hole is larger than the outer ring segment hole.

[0010] In this solution, the upper and lower closers are respectively provided with a plurality of inner ring segment holes and outer ring segment holes, which are used to realize different segment adjustments during the rotation of the upper and lower closers. Moreover, when the upper and lower closers rotate separately, the inner ring segment holes of the upper closer and the outer ring segment holes of the lower closer can appear in different combinations, thereby increasing the firepower gear of the segment valve.

[0011] Preferably, one of the upper shutter and the lower shutter is provided with one driving groove, and the other of the upper shutter and the lower shutter is provided with a plurality of driving grooves at intervals.

[0012] In this solution, one of the upper or lower closers is provided with only one drive groove, while the other one is provided with multiple drive grooves. In the process of the protrusion driving the upper and lower closers to rotate, the protrusion can drive the upper or lower closer provided with only one drive groove to a certain angle, and can also drive the upper or lower closer provided with multiple drive grooves separately, thereby making the inner ring segment holes and outer ring segment holes of the upper and lower closers present a variety of combinations. This is a better structural setting of the present application.

[0013] Preferably, a valve stem is further included, wherein the valve stem is located above the valve needle and is coaxially connected to the valve needle.

[0014] In this solution, the end of the valve stem is coaxially connected to one end of the valve needle. The user presses or rotates the valve stem to drive the valve needle to press down or rotate. When the user pulls the valve stem upward, the protruding part of the valve needle can drive the upper closure to rotate alone, thereby increasing the combination between the inner ring section hole of the upper closure and the outer ring section hole of the lower closure.

[0015] Preferably, a baffle and an elastic member are provided in the closer, the elastic member is sleeved on the outer peripheral side of the valve needle and the upper end of the elastic member abuts against the end of the valve stem, the lower end of the elastic member abuts against the baffle, the baffle is provided with a through hole, and the valve needle is inserted into the through hole.

[0016] In this solution, the closure can be either an upper closure or a lower closure. The gap between the peripheral side of the valve needle and the closure is sealed by a baffle to ensure the airtightness of the closure and prevent gas leakage. In addition, the elastic member provides elastic force after the valve stem is pressed down, so that the upper closure and the lower closure can rotate together after rotating separately when the protrusion is reset, thereby improving the reuse rate of the segment valve.

[0017] Preferably, the upper closing member is provided with an adjusting portion on a side of the valve cover close to the valve body, and a bump is provided on the valve cover corresponding to the adjusting portion.

[0018] In this solution, an adjusting part is provided on the upper closure, and a protrusion is provided correspondingly on the valve cover. When rotating, the adjusting part contacts the protrusion, and the sense of frustration during contact is transmitted to the user's hand pressing down the valve stem, thereby realizing the user's sense of gear adjustment during the stage adjustment process.

[0019] Preferably, the adjustment portion includes an adjustment member and a telescopic member, and a mounting groove for accommodating the adjustment member is opened on the side of the upper closure. The telescopic member is located between the adjustment member and the mounting groove and provides support force for the adjustment member to extend out of the mounting groove.

[0020] In this solution, the adjustment part includes an adjustment member and a telescopic member for the adjustment member to extend out of the mounting slot set in the upper closure. The telescopic member can be compressed when the adjustment member contacts the protrusion, and can extend the adjustment member out of the mounting slot again when the adjustment member is away from the protrusion so as to provide the user with a sense of adjustment gear when it is rotated next time.

[0021] Preferably, the outer surfaces of the upper closure and the lower closure are both protrudingly provided with abutment portions, and a limiting portion is provided in the valve body corresponding to the abutment portions. When the abutment portions rotate and abut against the limiting portions, the limiting portions are used to limit the rotation of the upper closure and the lower closure within a preset angle.

[0022] In this solution, the upper closer or the lower closer is provided with a rest portion, and a corresponding limiting portion is provided on the valve body. The limiting portion is used to contact the rest portion and limit the rotation angle of the upper closer or the lower closer, so that the upper closer and the lower closer can rotate within a preset angle and accordingly combine different levels of firepower gears.

[0023] Preferably, the valve body is provided with a rotation groove corresponding to the upper closing member and the lower closing member, the limiting portion is arranged in an arc shape and is located in the rotation groove, and the abutting portion extends into the rotation groove and rotates between the two ends of the limiting portion.

[0024] In this solution, a rotation groove is provided and a limiting portion is provided in the rotation groove so that when the abutting portion rotates in the rotation groove, the limiting portion limits the rotation of the upper and lower closure members. This is a preferred structural setting of the present application.

[0025] A burner comprises the section valve as described in any one of the above items.

[0026] The burner includes an upper closure and a lower closure arranged in a split manner. The ends of the protrusion of the valve needle extend on both sides into the drive groove of the upper closure and the drive groove of the lower closure, thereby synchronously driving the upper closure and the lower closure to rotate and correspondingly connecting the inner ring air supply channel and the outer ring air supply channel. In addition, the height dimension of the protrusion is not larger than the height dimension of the drive groove, so that the protrusion can be embedded in the drive groove of the upper closure or the lower closure and drive the upper closure or the lower closure to rotate independently, so as to increase the number of segment combinations between the upper closure and the lower closure.

[0027] A gas cooker comprises the burner described above.

[0028] The gas cooker includes an upper shutter and a lower shutter arranged in a split manner. Both sides of the end portion of the protrusion of the valve needle extend into the driving groove of the upper shutter and the driving groove of the lower shutter, thereby synchronously driving the upper shutter and the lower shutter to rotate and correspondingly connecting the inner ring gas supply channel and the outer ring gas supply channel. In addition, the height dimension of the protrusion is not larger than the height dimension of the driving groove, so that the protrusion can be embedded in the driving groove of the upper shutter or the lower shutter and independently drive the upper shutter or the lower shutter to rotate, thereby increasing the number of segment combinations between the upper shutter and the lower shutter.

[0029] The positive progressive effect of the present invention is that the present invention arranges the upper closure and the lower closure in a split manner, and arranges the inner ring air supply channel and the outer ring air supply channel on the valve body accordingly. The inner ring flow hole of the upper closure can be connected to the inner ring air supply channel, and the outer ring flow hole of the lower closure can be connected to the outer ring air supply channel. The upper closure and the lower closure can supply gas independently during the rotation process, and the upper closure and the lower closure are synchronously driven to rotate by the protrusion, so as to realize the adjustment of the fire power gear of the section valve under normal circumstances. By setting the dimension of the protrusion along the height direction to be no greater than the dimension of the driving groove along the height direction, the protrusion can be separately embedded in the driving groove of the upper closure or the lower closure, and then the valve needle can separately drive the upper closure or the lower closure to rotate. On the basis of the fire power gear under normal circumstances, the combination of the fire power gear of the section valve is increased, so as to realize the supply of different fire powers according to different cooking needs of users and save gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a three-dimensional diagram of a section valve according to a preferred embodiment of the present invention.

[0031] Figure 2 This is a top view of a sectional valve according to a preferred embodiment of the present invention.

[0032] Figure 3 for Figure 2 AA section view

[0033] Figure 4 This is a diagram showing the positional relationship between the upper and lower closers of a preferred embodiment of the present invention.

[0034] Figure 5 Schematic diagram of the structure of the adjustment part of a preferred embodiment of the present invention.

[0035] Figure 6 Schematic diagram of the structure of the protrusion on the valve cover of a preferred embodiment of the present invention.

[0036] Figure 7 This is a diagram showing the positional relationship between the telescopic member and the mounting slot according to a preferred embodiment of the present invention.

[0037] Figure 8 Schematic diagram of the structure of the upper closure of a preferred embodiment of the present invention.

[0038] Figure 9 Schematic diagram of the structure of the lower closure of a preferred embodiment of the present invention.

[0039] Figure 10 2. This is a diagram showing the positional relationship between the abutting portion and the limiting portion of the upper closure of a preferred embodiment of the present invention.

[0040] Figure 11 2. This is a diagram showing the positional relationship between the supporting portion and the limiting portion of the lower closure of a preferred embodiment of the present invention.

[0041] Figure 12 This is a diagram showing the positional relationship between the driving groove of the upper closure, the driving groove of the lower closure, and the protrusion of the valve needle in a preferred embodiment of the present invention.

[0042] Description of reference numerals:

[0043] Valve body 1

[0044] Valve cover 11

[0045] Bump 111

[0046] Valve needle 2

[0047] protrusion 21

[0048] closed child 3

[0049] Shangguizi 31

[0050] Xia Guazi 32

[0051] Inner ring flow hole 311

[0052] Outer ring flow hole 321

[0053] Inner ring segment hole 3111

[0054] Outer ring segment hole 3211

[0055] Drive slot 4

[0056] Valve stem 5

[0057] Baffle 6

[0058] Elastic member 7

[0059] Adjustment unit 8

[0060] Adjustment member 81

[0061] Telescopic parts 82

[0062] Abutment portion 9

[0063] Limiting portion 10

[0064] Rotating trough 100 DETAILED DESCRIPTION

[0065] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0066] This embodiment provides a segment valve, the specific structure of which is as follows Figure 1 、 Figure 2 and Figure 3As shown, the sectional valve includes a valve body 1, a valve needle 2 and a closure 3 rotatably connected to the valve body 1, the valve needle 2 is inserted into the closure 3, and the closure 3 has a split arrangement and an upper closure 31 and a lower closure 32 located at different heights. The upper closure 31 is located above the lower closure 32, wherein the outer peripheral side of the closure 3 formed by the upper closure 31 and the lower closure 32 overlapping is conical, and the side close to the upper closure 31 and the lower closure 32 is flat and arranged parallel to the side away from each other of the upper closure 31 or the lower closure 32. Due to the separately arranged upper closure 31 and lower closure 32, in order to realize the upper closure 31 and the valve body 1 being connected separately, or the lower closure 32 and the valve body 1 being connected separately to increase the sectional valve In order to understand the combination of firepower gears, the outer peripheral sides of the valve body 1 corresponding to the upper closure 31 and the lower closure 32 are provided with an inner ring air supply channel and an outer ring air supply channel. At the same time, the outer peripheral sides of the upper closure 31 and the lower closure 32 are respectively provided with an inner ring flow hole 311 and an outer ring flow hole 321 for communicating with the inner ring air supply channel and the outer ring air supply channel. When the inner ring flow hole 311 of the upper closure 31 is connected with the inner ring air supply channel, the outer ring flow hole 321 of the lower closure 32 can be connected with the outer ring air supply channel or not. Compared with the integrated closure 3, the combination of firepower gears of the stage valve has increased, thereby meeting the user's demand for diversified firepower gears.

[0067] Furthermore, if Figure 12 As shown, the corresponding sides of the upper closure 31 and the lower closure 32 are each provided with at least one driving groove 4, and the driving groove 4 of the upper closure 31 and the driving groove 4 of the lower closure 32 are arranged correspondingly in the height direction, and the part of the valve needle 2 extending into the closure 3 is circumferentially protruded with a protrusion 21, and the protrusion 21 can be welded to the valve needle 2 or can be integrally formed with the valve needle 2. The end of the protrusion 21 extends outward along the side close to the upper closure 31 and the lower closure 32 and does not extend out of the outer surface of the upper closure 31 or the lower closure 32 to prevent scratching the valve body 1. The upper and lower ends of the protrusion 21 are The two sides extend into the driving groove 4 of the upper closer 31 and the driving groove 4 of the lower closer 32 respectively. That is to say, a connected driving space is formed between the driving groove 4 of the upper closer 31 and the driving groove 4 of the lower closer 32 which are arranged correspondingly along the height direction. The protrusion 21 is located in the driving space and the two sides of the end of the protrusion 21 are simultaneously engaged with the driving groove 4 of the upper closer 31 and the driving groove 4 of the lower closer 32. When the valve needle 2 rotates circumferentially, the protrusion 21 can simultaneously drive the upper closer 31 and the lower closer 32 to rotate synchronously, so as to meet the normal firepower gear conversion requirements of the stage valve.

[0068] In addition, the height dimension of the protrusion 21 in this embodiment is not greater than the height dimension of any one of the driving grooves 4, that is, the overall height H1 of the protrusion 21 is not greater than the groove depth H2 of the driving groove 4 of the upper closure 31 or the driving groove 4 of the lower closure 32 (see FIG. Figure 12 ). It should be clearly stated that Figure 12 The groove depth H2 of the driving groove 4 of the middle upper closer 31 is the same as the groove depth H2 of the driving groove 4 of the lower closer 32, but this is only for the convenience of illustration in the specification. In other embodiments, the groove depth H2 of the driving groove 4 of the upper closer 31 and the groove depth H2 of the driving groove 4 of the lower closer 32 may be different, but both need to be greater than or equal to the overall height H1 of the protrusion 21.

[0069] Specifically in this embodiment, the driving groove 4 is a rectangular groove. Of course, in other embodiments, grooves of other shapes can also be used. Accordingly, in order to realize the clamping of the driving groove 4, the end of the protrusion 21 is rectangular, and the height of the protrusion 21 is not greater than the height from the groove bottom to the groove mouth of the driving groove 4. That is to say, when the protrusion 21 moves downward with the pressure of the valve needle 2 and is integrally embedded in the driving groove 4 of the lower closure 32, by continuing to rotate the valve needle 2, the protrusion 21 can independently drive the lower closure 32 to rotate, while the upper closure 31 remains in a relatively non-rotating state. At this time, There are three situations between the outer ring flow hole 321 of the lower closer 32 and the outer ring air supply channel. One is the connected state, the other is the semi-connected state formed by the outer ring flow hole 321 being partially blocked by the inner wall of the valve body 1, and the last one is the closed state. When the inner ring flow hole 311 of the upper closer 31 and the valve body 1 remain relatively fixed, the outer ring flow hole 321 of the lower closer 32 and the valve body 1 are connected more frequently, thereby realizing a more diversified gear position of the firepower gear of the section valve, thereby meeting the user's demand for an increase in the firepower gear position of the section valve.

[0070] For the integrated shutter existing in the prior art, holes are usually punched on the surface of the shutter to realize different fire power gears of the stage valve. Due to the size and structural limitations of the shutter, in order to effectively distinguish different fire power gears and the sealing requirements of the shutter, the angle between two adjacent holes is about 30°. This results in the fire power gears of the integrated shutter generally being 9 gears or less. Reducing the interval angle to increase the fire power gears will affect the stage accuracy of the stage valve and the sealing of the shutter.

[0071] like Figure 4 、 Figure 5 and Figure 6 As shown, in this embodiment, the outer peripheral side of the upper closer 31 is provided with a plurality of inner ring segment holes 3111 of successively increasing sizes, and the outer peripheral side of the lower closer 32 is provided with a plurality of outer ring segment holes 3211 of successively increasing sizes. The size of the inner ring flow hole 311 is larger than the size of the inner ring segment hole 3111, and the size of the outer ring flow hole 321 is larger than the size of the outer ring segment hole 3211.

[0072] like Figure 8 、 Figure 9As shown, in this embodiment, the inner ring segment hole 3111 and the outer ring segment hole 3211 provided on the split upper closure 31 and the lower closure 32 are circular holes. Taking the inner ring segment hole 3111 as an example, a plurality of inner ring segment holes 3111 are arranged in order from small to large on the outer circumference of the upper closure 31, and the inner ring flow hole 311 is located next to the inner ring segment hole 3111 with the largest size. The size of the inner ring flow hole 311 is larger than the inner ring segment hole 3111, that is, when the inner ring segment hole 3111 with the largest size of the upper closure 31 is connected to the inner ring supply hole 3111, the inner ring flow hole 311 is larger than the inner ring segment hole 3111. When the upper closure 31 rotates, the power level of the upper closure 31 is not at its maximum level. Only when the inner ring flow hole 311 is connected to the inner ring air supply channel does the power level of the upper closure 31 reach its maximum level. The multiple inner ring segment holes 3111 are connected to the inner ring air supply channel during the rotation of the upper closure 31. This allows the inner ring segment holes 3111 of the upper closure 31 and the outer ring segment holes 3211 of the lower closure 32 to form different combinations when the upper closure 31 rotates alone, compared to an integrated closure. This increases the power level of the segment valve. The outer ring segment holes 3211 of the lower closure 32 are similar to the inner ring segment holes 3111 of the upper closure 31 and will not be described in detail here.

[0073] In this embodiment, the fire power gear formed by the inner ring segment hole 3111 and the inner ring flow hole 311 of the upper shutter 31 is 6 gears as an example, that is, the inner ring segment hole 3111 is five circular holes from small to large, and the inner ring flow hole 311 is a hole larger than the inner ring segment hole 3111. Similarly, the outer ring segment hole 3211 and the outer ring flow hole 321 of the lower shutter 32 are also composed of six holes. When the valve needle 2 drives the upper shutter 31 and the lower shutter 32 to rotate separately, since the upper shutter 31 has 6 fire power gears and the lower shutter 32 has 6 fire power gears, rotating the upper shutter 31 or the lower shutter 32 separately can recombine the fire power gears between the upper shutter 31 and the lower shutter 32 and increase them to 36 fire power gears, so that the gas supplied in the outer ring gas supply channel has more changes while the gas supply in the inner ring gas supply channel remains unchanged.

[0074] In a preferred embodiment, one of the upper closing member 31 and the lower closing member 32 is provided with a driving groove 4, and the other of the upper closing member 31 and the lower closing member 32 is provided with a plurality of driving grooves 4 at intervals. Figure 5 As shown, in this embodiment, a plurality of driving grooves 4 are provided on the lower side of the upper closing member 31 , and a driving groove 4 is provided on the upper side of the lower closing member 32 .

[0075] Specifically, taking the lower closure 32 of the present embodiment as an example in which one driving groove 4 is provided and the upper closure 31 is provided with eleven driving grooves 4, the driving grooves 4 provided in the upper closure 31 are not in a one-to-one correspondence with the inner ring segment holes 3111 of the upper closure 31. The number of driving grooves 4 provided is greater than the number of firepower gears of the inner ring segment holes 3111 only for rotating the inner ring segment holes 3111 to different positions, thereby increasing the contact between the inner ring segment holes 3111 and the inner ring air supply channel; in addition, the driving groove 4 of the upper closure 31 is also provided with a guide surface from the notch of the driving groove 4 to the inside of the driving groove 4, and the guide surface slides upward from the protrusion 21 to the upper closure 31 after each individual adjustment of the lower closure 32. The driving groove 4 plays a guiding role. When the user drives the protrusion 21 to rotate, the protrusion 21 can tend to slide into the driving groove 4 of the adjacent upper closure 31 corresponding to the driving groove 4 of the lower closure 32 along the height direction. By setting 11 driving grooves 4 of the upper closure 31, it is ensured that when the upper closure 31 is located at any of the firepower gears 1-6, by embedding the protrusion 21 into a driving groove 4 set in the lower closure 32, the gear adjustment of the lower closure 32 from the smallest outer ring segment hole 3211 to the outer ring flow hole 321 can also be achieved. Of course, the upper closure 31 is provided with one driving groove 4 and the lower closure is provided with multiple driving grooves 4 in the same way, which will not be repeated here.

[0076] In this embodiment, the valve stem 5 of the stage valve is located above the valve needle 2 and is coaxially connected to the valve needle 2. The end of the valve stem 5 connected to the valve needle 2 is larger than the end of the valve needle 2. In other words, the end of the valve stem 5 connected to the valve needle 2 extends outward along the outer surface of the valve needle 2. A user can press or rotate the valve stem 5 to push the valve needle 2 downward or rotate it. When the user pulls the valve stem 5 upward, the protrusion 21 of the valve needle 2 can independently engage with the driving groove 4 of the upper closure member 31, driving the upper closure member 31 to rotate. When the user presses the valve stem 5 downward, the protrusion 21 of the valve needle 2 can independently engage with the driving groove 4 of the lower closure member 32, driving the lower closure member 32 to rotate.

[0077] In other implementations of this embodiment, the protrusion 21 of the valve needle 2 can also be located in the driving groove 4 of the upper closure 31 in the initial state, that is, the user does not pull up or press down the valve stem 5, and the protrusion 21 is embedded in the driving groove 4 of the upper closure 31. At this time, the valve stem 5 is rotated, and the protrusion 21 drives the upper closure 31 to rotate alone. After slightly pressing down the valve stem 5, the two sides of the end of the protrusion 21 extend into the driving groove 4 of the upper closure 31 and the driving groove 4 of the lower closure 32 respectively. When the valve stem 5 is rotated, the upper closure 31 and the lower closure 32 rotate synchronously, which can not only increase the fire power level of the stage valve, but also conform to the stage adjustment method of the existing integrated closure, making it easier for users to adapt when using it, which is the same as the existing ignition logic.

[0078] Of course, the protrusion 21 can also be initially located in the driving groove 4 of the lower closure 32. The principle is the same as that of the protrusion 21 being initially located in the driving groove 4 of the upper closure 31, and will not be repeated here.

[0079] like Figure 3 、 Figure 7 As shown, a baffle 6 and an elastic member 7 are disposed within the closure 3. The baffle 6 can be disposed within either the upper closure 31 or the lower closure 32. In this embodiment, the baffle 6 is a circular ring and is located within the upper closure 31 along the width of the closure 3. A through hole is provided in the center of the baffle 6 to accommodate the valve needle 2. The baffle 6 seals the gap between the circumference of the valve needle 2 and the closure 3 to ensure airtightness of the closure 3 and prevent gas leakage. The protrusion 21 of the valve needle 2 is located above the baffle 6 to facilitate assembly of the valve needle 2. The elastic member 7 is a spring, one end of which abuts the baffle 6 and the other end abuts the end of the valve stem 5. The elastic member 7 provides elastic force when the valve stem 5 is depressed, allowing the upper and lower closures 31 and 32 to rotate together after independent rotation when the protrusion 21 returns to its original position, thereby increasing the reuse rate of the stage valve. Furthermore, after the valve stem 5 is depressed, the spring causes the protrusion 21 to rebound to its initial position.

[0080] like Figure 5 、 Figure 6 and Figure 7 As shown, an adjusting portion 8 is provided on the side of the upper closing member 31 close to the valve cover 11 of the valve body 1 , and a protrusion 111 is provided on the valve cover 11 corresponding to the adjusting portion 8 .

[0081] Specifically, the valve cover 11 is a plate covering the valve body 1. The valve cover 11 is located above the upper closure 31. A protrusion 111 is provided on the lower surface of the valve cover 11. The protrusion 111 is an arc-shaped protrusion arranged around the circumference of the upper closure 31. There can be multiple protrusions 111, and an adjustment part 8 is provided on the side of the upper closure 31 close to the valve cover 11. The adjustment part 8 can contact with the protrusion 111 in the height direction when the upper closure 31 rotates, and transmits the sense of frustration during contact to the user's hand pressing down the valve stem 5, thereby realizing the user's sense of gear adjustment during the stage adjustment process.

[0082] Among them, when the protrusion 21 switches from the driving groove 4 of one upper closure 31 to the driving groove 4 of another upper closure 31, it can also transmit the sense of frustration during contact to the user's hand pressing down the valve stem 5 by first embedding into the driving groove 4 of the lower closure 32 and then embedding into the driving groove 4 of the other upper closure 31, thereby realizing the user's demand for gear sense, that is, operating texture.

[0083] Furthermore, the adjustment portion 8 includes an adjustment member 81 and a telescopic member 82. A mounting groove for accommodating the adjustment member 81 is opened on the side of the upper closure 31. The telescopic member 82 is located between the adjustment member 81 and the mounting groove and provides support for the adjustment member 81 to extend out of the mounting groove.

[0084] Specifically, the mounting groove is a cylindrical groove, the notch of the cylindrical groove is set close to the cover plate 11, the adjusting member 81 is a spherical member, of course, it can also be a cylindrical protrusion, which is used to cooperate with the mounting groove, the telescopic member 82 is a spring, and the adjusting member 81 is supported by the spring and extends out of the mounting groove. The adjusting member 81 contacts and squeezes the protrusion 111 during the rotation of the upper closure 31 to transmit the gear adjustment feeling of the user during the stage adjustment process, and the adjusting member 81 is squeezed by the protrusion 111 to compress the spring and partially or completely shrink into the mounting groove to prevent the protrusion 111 or the adjusting member 81 from being severely worn after multiple trials, resulting in the disappearance of the gear feeling, thereby improving the reuse rate of the stage valve.

[0085] In this embodiment, the outer surfaces of the upper closure 31 and the lower closure 32 are both protrudingly provided with a supporting portion 9, and a limiting portion 10 is provided in the valve body 1 corresponding to the supporting portion 9. When the supporting portion 9 rotates and abuts against the limiting portion 10, the limiting portion 10 is used to limit the rotation of the upper closure 31 and the lower closure 32 within a preset angle.

[0086] like Figure 10 、 Figure 11 As shown, specifically, the valve body 1 is provided with a rotation groove 100 corresponding to both the upper closure member 31 and the lower closure member 32. The rotation groove 100 is a circular groove. The rotation groove 100 corresponding to the upper closure member 31 is located on the outer periphery of the upper closure member 31. The outer periphery of the upper closure member 31 is provided with an outwardly extending abutment portion 9 protruding therefrom. The abutment portion 9 extends into the rotation groove 100 and rotates within the rotation groove 100 as the upper closure member 31 rotates. The limiting portion 10 is an arc-shaped block and is located within the rotation groove. The size of the limiting portion 10 is determined by the setting angle of the inner ring flow hole 311 and the inner ring segment hole 3111 of the upper closure member 31, and includes the angle at which neither the inner ring flow hole 311 nor the inner ring segment hole 3111 is connected to the inner ring air supply channel during the rotation of the upper closure member 31. This is a prior art and will not be described in detail here. The limiting portion 10 limits the rotation angle of the upper closure member 31 by restricting the abutment portion 9 during the rotation of the upper closure member 31.

[0087] The rotation groove 100 of the valve body 1 corresponding to the lower closure 32 can not only be set in the same manner as the rotation groove 100 of the valve body 1 corresponding to the upper closure 31, but the rotation groove 100 can also be set below the lower closure 32. The abutment portion of the lower closure 32 extends downward in the height direction from the side of the lower closure 32 away from the upper closure 31 and extends into the rotation groove 100 below, which can also achieve the purpose of limiting the rotation angle of the lower closure 32.

[0088] This embodiment provides a burner, comprising the above-mentioned stage valve.

[0089] The burner includes an upper shutter 31 and a lower shutter 32 arranged in a split manner, and both sides of the end of the protrusion 21 of the valve needle 2 extend into the drive groove 4 of the upper shutter 31 and the drive groove 4 of the lower shutter 32, so as to synchronously drive the upper shutter 31 and the lower shutter 32 to rotate and connect the inner ring air supply channel and the outer ring air supply channel accordingly. In addition, the height dimension of the protrusion 21 is not larger than the height dimension of the drive groove 4, so that the protrusion 21 can be embedded in the drive groove 4 of the upper shutter 31 or the lower shutter 32 and drive the upper shutter 31 or the lower shutter 32 to rotate separately, so as to increase the number of segment combinations between the upper shutter 31 and the lower shutter 32.

[0090] This embodiment also provides a gas cooker, comprising the above-mentioned burner.

[0091] The gas cooker can add a new fire power level on the basis of the original fire power level by the user pressing down the valve stem 5 or pulling up the valve stem 5 to meet different level requirements during actual cooking and save gas consumption.

[0092] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of the present invention.

Claims

1. A sectional valve, comprising a valve body, a valve needle and a stopper rotatably connected to the valve body, wherein the valve needle is inserted into the stopper, characterized in that: The closer has an upper closer and a lower closer that are separately arranged and located at different heights. An inner ring air supply channel and an outer ring air supply channel are provided on the outer peripheral sides of the valve body corresponding to the upper closer and the lower closer. An inner ring flow hole and an outer ring flow hole are provided on the outer peripheral sides of the upper closer and the lower closer respectively for communicating with the inner ring air supply channel and the outer ring air supply channel. The corresponding side portions of the upper closer and the lower closer are each provided with at least one driving groove, and the two driving grooves of the upper closer and the lower closer are correspondingly arranged along the height direction. The valve needle is provided with a protruding portion on its circumference, and both sides of the end of the protruding portion extend into the driving grooves provided in the upper closing member and the lower closing member respectively, and the height dimension of the protruding portion is not greater than the height dimension of any of the driving grooves; The outer circumference of the upper closure is provided with a plurality of inner ring segment holes of successively increasing sizes, and the outer circumference of the lower closure is provided with a plurality of outer ring segment holes of successively increasing sizes, the size of the inner ring flow hole is larger than the inner ring segment hole, and the size of the outer ring flow hole is larger than the outer ring segment hole. The outer surfaces of the upper closure and the lower closure are both protrudingly provided with abutment parts, and a limiting part is provided in the valve body corresponding to the abutment part. When the abutment part rotates and abuts against the limiting part, the limiting part is used to limit the rotation of the upper closure and the lower closure within a preset angle.

2. The sectional valve according to claim 1, characterized in that: One of the upper closing member and the lower closing member is provided with one driving groove, and the other of the upper closing member and the lower closing member is provided with a plurality of driving grooves at intervals.

3. The sectional valve according to claim 1, characterized in that: A valve stem is also included, which is located above the valve needle and coaxially connected to the valve needle.

4. The sectional valve according to claim 3, characterized in that: A baffle and an elastic member are provided in the closure. The elastic member is sleeved on the outer peripheral side of the valve needle and the upper end of the elastic member abuts against the end of the valve stem. The lower end of the elastic member abuts against the baffle. The baffle is provided with a through hole, and the valve needle is inserted into the through hole.

5. The sectional valve according to claim 1, characterized in that: The upper closing member is provided with an adjusting portion on one side of the valve cover close to the valve body, and the valve cover is provided with a protruding block corresponding to the adjusting portion.

6. The sectional valve according to claim 5, characterized in that: The adjusting portion includes an adjusting member and a telescopic member. A mounting groove for accommodating the adjusting member is provided on the side of the upper closure. The telescopic member is located between the adjusting member and the mounting groove and provides support for the adjusting member to extend out of the mounting groove.

7. The sectional valve according to claim 1, characterized in that: The valve body is provided with a rotation groove corresponding to the upper closing member and the lower closing member. The limiting portion is arranged in an arc shape and is located in the rotation groove. The abutting portion extends into the rotation groove and rotates between the two ends of the limiting portion.

8. A burner, characterized in that: It comprises the segment valve as described in any one of claims 1 to 7.

9. A gas cooker, characterized in that: A burner comprising the burner according to claim 8.

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