Segment valve, burner comprising same and gas cooker comprising same

Abstract

The utility model provides a segment position valve and a burner and a gas cooker comprising the same, the segment position valve comprises a valve body, the valve body is internally provided with a cavity for accommodating a closer, the closer comprises an inner closer and an outer closer sleeved on the peripheral side of the inner closer, the valve body at least comprises three gas channels, and the outer closer is communicated with the inner closer and the outer closer. The at least three fuel gas channels are sequentially arranged in the height direction of the cavity and all communicated with the cavity, the first end of the outer closing element is flush with the gas inlet end of the cavity, and the inner closing element is arranged away from the gas inlet end. The end portion, facing the gas inlet end, of the inner closing piece and the first end of the outer closing piece are arranged in the height direction of the cavity in a spaced mode, and the spacing distance is at least the distance between one gas channel and the gas inlet end. The end, close to the gas inlet end, of the closure is of a single-layer structure, compared with a closure of a double-layer structure, the amount of gas entering the closure at the same time is increased, and the pressure drop of the gas is small so as to meet the requirements of users.

Description

Technical Field

[0001] The utility model relates to the technical field of stoves, in particular to a stage valve and a burner and a gas stove comprising the same. Background Art

[0002] The stage valve has gradually become an important branch of burners due to its advantages such as strong fire control ability and diverse flame layout types.

[0003] Existing sectional valves are equipped with a shutter with a double-layer structure, namely, an outer shutter is sleeved on the outer periphery of an inner shutter, and both are provided with flow holes. The flow holes on the outer shutter and the flow holes on the inner shutter are of different sizes, so that the outer shutter contacts the sealing grease, while the inner shutter is not affected by the sealing grease and can achieve precise gas flow regulation during rotation. However, due to the size limitations of the sectional valve, both the double-layer and single-layer shutters are installed in a cavity of the same size, namely, the outer periphery of the shutters has the same size. On this basis, the air inlet end of the double-layer shutter is smaller than that of the single-layer shutter. That is, when gas flows from the air inlet channel into the cavity and enters the shutter through the air inlet end, the air intake of the double-layer shutter is significantly lower than that of the single-layer shutter at the same time, and the gas pressure drop increases, which seriously affects the gas flow regulation effect of the sectional valve and causes a poor user experience. Utility Model Content

[0004] The technical problem to be solved by the present invention is to overcome the defects of the prior art in that the air intake volume is insufficient and the gas pressure drop is increased due to the size limitation of the air intake end, and to provide a stage valve and a burner and a gas cooker containing the same.

[0005] The utility model solves the above technical problems through the following technical solutions:

[0006] A sectional valve, the sectional valve comprising a valve body, the valve body having a cavity for accommodating a closer, the closer comprising an inner closer and an outer closer sleeved on the outer circumference of the inner closer, the valve body comprising at least three gas channels, at least three of the gas channels being arranged in sequence along the height direction of the cavity and all being connected to the cavity, the first end of the outer closer being arranged flush with the air inlet end of the cavity, the inner closer being arranged away from the air inlet end, the end of the inner closer facing the air inlet end being spaced apart from the first end of the outer closer along the height direction of the cavity, and the spacing distance being at least the distance between one of the gas channels and the air inlet end.

[0007] In this solution, by further reducing the size of the inner closure to be smaller than the outer closure, and positioning the inner closure away from the air inlet, gas entering the closure from the air inlet only contacts the outer closure. This means that the end of the closure near the air inlet is a single-layer structure. Compared to a double-layer closure, this increases the amount of gas entering the closure at any given time, minimizing the gas pressure drop and meeting user needs. Furthermore, by providing at least three gas channels, which are arranged sequentially along the height of the cavity, and the distance from the end of the inner closure facing the air inlet to the first end of the outer closure (i.e., the air inlet) equals the distance between at least one gas channel and the air inlet along the height of the cavity, the end of the closure facing the air inlet is a single-layer structure.

[0008] Preferably, one of the at least three gas channels is an inner ring gas channel, the inner ring gas channel is connected to the air inlet end through the inner closure, and the inner ring gas channel is arranged away from the air inlet end.

[0009] In this solution, the inner ring gas channel is set away from the air inlet end so that when the amount of gas entering the cavity at the air inlet end is large, the inner and outer closers of the double-layer structure cooperate to regulate the gas in the inner ring gas channel. The double-layer structure and the setting away from the air inlet end can reduce the impact of the gas regulation on the inner ring gas channel when the amount of gas entering the cavity at the air inlet end is large.

[0010] Preferably, two of the at least three gas channels are a middle ring gas channel and an outer ring gas channel, and the middle ring gas channel is arranged close to the gas inlet end;

[0011] Or the outer ring gas channel is arranged close to the air inlet end.

[0012] In this solution, compared to the traditional valve body arrangement where the inner ring gas channel is positioned closer to the intake end, positioning the middle and outer ring gas channels closer to the intake end reduces the impact on the middle and outer ring gas channels when a large amount of gas enters the cavity at the intake end. Furthermore, the requirement for sufficient intake volume can be met.

[0013] Preferably, the distance between the end of the inner closer facing the air inlet end and the first end of the outer closer is the sum of the distances from the middle ring gas channel and the outer ring gas channel to the air inlet end.

[0014] In this solution, through the above arrangement, a double-layer structure is formed with the outer closure at the portion of the inner closure corresponding only to the inner ring gas channel, thereby reducing the size of the inner closure, thereby further increasing the amount of gas entering the closure and further reducing the pressure drop.

[0015] Preferably, both the outer closer and the inner closer are provided with flow holes, and the size of the flow hole on the outer closer is larger than the size of the flow hole on the inner closer.

[0016] In this solution, the above arrangement allows the sealing grease in the cavity to only contact the outer closer without blocking the flow holes on the inner closer, so that the size of the flow holes on the inner closer can be reduced accordingly without the need for special-shaped holes.

[0017] Preferably, the flow hole of the inner stopper corresponding to the inner ring gas channel is a circular hole or an elliptical hole.

[0018] In this solution, the above-mentioned setting is used to accurately adjust the amount of gas in the inner ring gas channel, so that the flow range of the inner ring gas channel is large enough to adapt to different Chinese cooking fire power adjustment problems.

[0019] Preferably, when the closer rotates 90° from the zero position, the closer is only connected to the inner ring gas channel and the middle ring gas channel; when the closer rotates 135° from the zero position, the closer is connected to the inner ring gas channel, the middle ring gas channel and the outer ring gas channel.

[0020] In this solution, the above-mentioned setting is used to further increase the firepower adjustment range of the stage valve.

[0021] Preferably, the valve body further includes a valve stem connected to the shutter, the valve stem is provided with a clamping portion along the radial direction, and the cover plate of the valve body is provided with a groove corresponding to the clamping portion.

[0022] In this solution, through the above-mentioned setting, when the clamping part cooperates with the groove, the gear position feel of the stage valve under the change of angle when the firepower is adjusted is fed back to the user through the closing member and the stage valve stem, so as to enhance the user experience.

[0023] A burner comprises the above-mentioned section valve.

[0024] In this solution, the burner includes the above-mentioned stage valve to increase the air intake into the stage valve and reduce the gas pressure drop, so that the burner can meet the needs of users.

[0025] A gas cooker comprises the burner as described above.

[0026] In this solution, the gas stove includes the above-mentioned burner, so that the gas stove meets the requirements of high firepower and high-efficiency combustion performance, while also meeting the requirements of large-area uniform fire distribution, thereby meeting the requirements of different types of Chinese cooking for firepower and flame distribution.

[0027] The positive and progressive effects of the present invention are as follows: by further reducing the size of the inner closure to be smaller than that of the outer closure, when the inner closure is positioned away from the air inlet end, gas entering the closure from the air inlet end only contacts the outer closure, i.e., the end of the closure near the air inlet end is a single-layer structure. Compared to a double-layer closure, the amount of gas entering the closure at any one time is increased, and the gas pressure drop is reduced to meet user needs. Furthermore, by providing at least three gas channels, which are arranged sequentially along the height of the cavity, and the distance from the end of the inner closure facing the air inlet end to the first end of the outer closure, i.e., the air inlet end, is the distance between at least one gas channel and the air inlet end along the height of the cavity, the end of the closure facing the air inlet end is achieved as a single-layer structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a three-dimensional diagram of a stage valve according to a preferred embodiment of the present invention.

[0029] Figure 2 This is a diagram showing the positional relationship between the inner and outer closers of a preferred embodiment of the present invention.

[0030] Figure 3 This is a three-dimensional diagram of an inner closure according to a preferred embodiment of the present invention.

[0031] Figure 4 This is a structural schematic diagram of a valve body cover plate in a preferred embodiment of the present invention.

[0032] Description of reference numerals:

[0033] Valve body 1, cavity 11, air inlet end 111, gas channel 12, inner ring gas channel 121, valve stem 13, cover plate 14, groove 141

[0034] Closer 2, inner closeer 21, outer closeer 22, snap-fit groove 221

[0035] Flow hole 3 DETAILED DESCRIPTION

[0036] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0037] This embodiment provides a segment valve, the specific structure of which is as follows Figure 1 、 Figure 2 and Figure 3As shown, the stage valve includes a valve body 1, which has a cavity 11 for accommodating a closure 2. The closure 2 includes an inner closure 21 and an outer closure 22 sleeved on the outer peripheral side of the inner closure 21. The valve body 1 includes at least three gas channels 12, which are sequentially arranged along the height direction of the cavity 11 and are all connected to the cavity 11. The first end of the outer closure 22 is arranged flush with the air inlet end 111 of the cavity 11, and the inner closure 21 is arranged away from the air inlet end 111. The end of the inner closure 21 facing the air inlet end 111 is spaced apart from the first end of the outer closure 22 along the height direction of the cavity 11, and the spacing distance is at least the distance between one gas channel 12 and the air inlet end 111.

[0038] Specifically, the cavity 11 is a conical structure, and the shutter 2 is also a conical structure and cooperates with the inner wall of the cavity 11, wherein the outer shutter 22 is used to cooperate with the inner wall of the cavity 11, and the inner shutter 21 is arranged in the outer shutter 22. The air inlet end 111 of the cavity 11 is located at the bottom of the valve body 1, and the gas is supplied from the bottom of the valve body 1 to the shutter 2 along the height direction of the cavity 11 through the air inlet end 111. The outer shutter 22 and the inner shutter 21 have different heights along the height direction of the cavity 11. The inner shutter 21 is arranged away from the air inlet end 111, and the end of the inner shutter 21 close to the air inlet end 111 is spaced apart from the first end of the outer shutter 22 along the height direction of the cavity 11. When the first end of the outer shutter 22 is arranged flush with the air inlet end 111, the end of the inner shutter 21 close to the air inlet end 111 is spaced apart from the air inlet end 111, so that the size of the inner shutter 21 is smaller than that of the outer shutter 22. When the closure 21 is set away from the air inlet end 111, the gas only contacts the outer closure 22 when entering the closure 2 from the air inlet end 111, that is, the end of the closure 2 close to the air inlet end 111 is a single-layer structure. Compared with the double-layer structure of the closure 2, without changing the outer peripheral size of the closure 2, the amount of gas entering the closure 2 at the same time increases accordingly due to the increase in the space of the single-layer structure. In addition, due to the increase in space, the gas pressure drop after entering the closure 2 changes less, thereby meeting user needs.

[0039] It can be understood that in this embodiment, three gas channels 12 are arranged in sequence along the height direction of the cavity 11, the gas channels 12 are cylindrical channels 12, and two adjacent gas channels 12 are arranged at intervals along the height direction of the cavity 11. Compared with the three gas channels 12 being located at the same height of the shutter 2, the three gas channels 12 arranged along the height direction of the cavity 11 can be provided with multiple flow holes on the outer peripheral side of the shutter 2 corresponding to the three gas channels 12 at different heights to achieve a wider firepower range. Moreover, the distance between the end of the inner closure 21 facing the air inlet end 111 and the first end of the outer closure 22 along the height direction of the cavity 11 is at least the distance between one gas channel 12 and the air inlet end 111, thereby realizing that the end of the closure 2 facing the air inlet end 111 is a single-layer structure, and when the gas enters the closure 2 from the air inlet end 111, the amount of gas in at least one gas channel 12 is sufficient and the gas pressure drop is reduced. In other embodiments, the number of gas channels 12 can also be four or more. At the same time, the distance between the end of the inner closure 21 facing the air inlet end 111 and the first end of the outer closure 22 along the height direction of the cavity 11 can also be the distance between two gas channels 12 and the air inlet end 111, so that the amount of gas in the two gas channels 12 is sufficient and the gas pressure drop is reduced.

[0040] Furthermore, in this embodiment, one of the at least three gas channels 12 is an inner ring gas channel 121 , which is connected to the air inlet end 111 through the inner shutter 21 , and is arranged away from the air inlet end 111 .

[0041] Specifically, the inner ring gas channel 121 is located in at least three gas channels 12, away from the gas inlet end 111, that is, the inner ring gas channel 121 is located above the remaining two gas channels 12 along the height direction of the cavity 11. The closure 2 corresponding to the inner ring gas channel 121 includes, in addition to the outer closure 22, an inner closure 21 arranged in the outer closure 22. The inner closure 21 cooperates with the outer closure 22 to supply gas to the inner ring gas channel 121. It should be noted that, since a large amount of gas enters the inner ring gas channel 121, it has a great impact on the inner ring fire cover connected to the inner ring gas channel 121. In order to eliminate this impact, the inner ring gas channel 121 is set away from the air inlet end 111, so that when the amount of gas entering the cavity 11 from the air inlet end 111 is large, the inner closer 21 and the outer closer 22 of the double-layer structure cooperate to regulate the gas in the inner ring gas channel 121. The double-layer structure and the setting away from the air inlet end 111 can reduce the gas regulation impact on the inner ring gas channel when the amount of gas entering the cavity 11 from the air inlet end 111 is large.

[0042] In this embodiment, two of the at least three gas channels 12 are a middle ring gas channel and an outer ring gas channel, respectively. The middle ring gas channel is disposed close to the gas inlet end 111 .

[0043] Specifically, the remaining two gas channels 12 of the three gas channels 12 are respectively a middle ring gas channel and an outer ring gas channel, the middle ring gas channel is used to communicate with the middle ring fire cover, and the outer ring gas channel is used to communicate with the outer ring fire cover, wherein the inner ring gas channel 121 is located above the middle ring gas channel and the outer ring gas channel along the height direction of the cavity 11, and by setting the middle ring gas channel close to the air inlet end 111, compared with the traditional valve body setting the inner ring gas channel 121 close to the air inlet end 111, setting the middle ring close to the air inlet end 111 has less impact on the middle ring when the amount of gas entering the cavity 11 at the air inlet end 111 is large, and can meet the user's firepower requirements for the middle ring fire cover.

[0044] In other embodiments, the outer ring gas channel is disposed near the gas inlet end 111. It is understood that the middle ring gas channel and the outer ring gas channel have relatively little impact on large gas volumes. Disposing the middle ring gas channel between the inner ring gas channel 121 and the outer ring gas channel along the height direction of the cavity 11 allows the valve body 1, which originally had the middle ring gas channel disposed between the three gas channels 12, to be modified with minimal modification and lower modification costs. The valve body 1 can even be used across different models, thereby improving its versatility.

[0045] Furthermore, in this embodiment, the distance between the end of the inner closer 21 facing the air inlet end 111 and the first end of the outer closer 22 is the sum of the distances from the middle ring gas channel and the outer ring gas channel to the air inlet end 111 .

[0046] Specifically, the size of the inner closure 21 is smaller than that of the outer closure 22, and the inner closure 21 is arranged away from the air inlet end 111 along the height direction of the cavity 11. The distance between the end of the inner closure 21 facing the air inlet end 111 and the air inlet end 111 or the first end of the outer closure 22 is the sum of the distances between the middle ring gas channel and the outer ring gas channel and the air inlet end 111. That is to say, on the basis that the distance between the end of the inner closure 21 facing the air inlet end 111 and the first end of the outer closure 22 along the height direction of the cavity 11 is the distance between one gas channel 12 and the air inlet end 111, the size of the inner closure 21 is further reduced, and the size of the part of the closure 2 forming the double-layer structure corresponds only to the inner ring gas channel 121 along the radial direction of the closure 2, while the part of the closure 2 forming the single-layer structure corresponds to the middle ring gas channel and the outer ring gas channel respectively along the radial direction of the closure 2, that is, the two gas channels 12 close to the air inlet end 111. By reducing the size of the inner closure 21, the amount of gas entering the closure 2 is further increased and the pressure drop is further reduced, thereby meeting the user's demand for high firepower and high efficiency combustion performance.

[0047] In this embodiment, both the outer closer 22 and the inner closer 21 are provided with flow holes 3 , and the size of the flow hole 3 on the outer closer 22 is larger than the size of the flow hole 3 on the inner closer 21 .

[0048] Specifically, flow holes 3 are provided on the outer stopper 22 at different heights corresponding to the three gas passages 12. Since the cavity 11 is filled with sealing grease to ensure the tightness of the valve body 1, when the outer stopper 22 contacts the inner wall of the cavity 11, the flow holes 3 on the outer stopper 22 are designed as waist-shaped holes or other irregularly shaped holes as used in the prior art to prevent clogging of the flow holes 3 by the sealing grease. It is understood that, while the outer stopper 22 prevents clogging by the sealing grease, the flow holes 3 on the inner stopper 21 disposed within the outer stopper 22 can be correspondingly reduced in size and configured as regular holes. This eliminates the concern that the flow holes 3 on the inner stopper 21 will be clogged by the sealing grease. The smaller flow holes 3 on the inner stopper 21 can be configured in a variety of sizes to meet the user's varying heat requirements, thereby increasing the heat adjustment range of the stage valve and meeting the heat and flame distribution requirements of various Chinese cooking styles.

[0049] In this embodiment, the flow hole 3 of the inner stopper 21 corresponding to the inner ring gas channel 121 is a circular or elliptical hole. This allows for precise regulation of the gas flow in the inner ring gas channel 121, resulting in a wide flow range within the inner ring gas channel 121 to accommodate various heat adjustment requirements for Chinese cooking. For example, the circular hole can be a φ1 hole. Compared to the flow hole 3 on the inner stopper 21 in conventional stopper structures, this smaller hole allows for a wider range of heat adjustment.

[0050] In this embodiment, when the closer 2 rotates 90° from the zero position, the closer 2 is connected only to the inner ring gas channel 121 and the middle ring gas channel. When the closer 2 rotates 135° from the zero position, the closer 2 is connected to the inner ring gas channel 121, the middle ring gas channel and the outer ring gas channel.

[0051] Specifically, this embodiment uses a stage valve that can be stopped at 0°, 45°, 65°, 90°, 135°, 175°, 210°, 235°, 260°, and 285°. At 90°, only the inner ring gas channel 121 and the middle ring gas channel are connected, meeting the user's need for concentrated high-power cooking. Furthermore, at 135°, the inner ring gas channel 121, the middle ring gas channel, and the outer ring gas channel are simultaneously connected to form a large-area heating zone, meeting the user's needs for concentrated high-power cooking and large-area high-power cooking.

[0052] like Figure 4 As shown, in this embodiment, the valve body 1 further includes a valve stem 13 connected to the closer 2. The valve stem 13 is provided with a clamping portion (not shown in the figure) in the radial direction, and the cover plate 14 of the valve body 1 is provided with a groove 141 corresponding to the clamping portion.

[0053] The second end of the outer closure 22 is provided with a snap-fit groove 221, which extends to the inner closure 21 to drive the double-layer structure of the closure 2 to rotate synchronously. The snap-fit groove 221 is used to cooperate with the snap-fit portion provided in the radial direction of the valve stem 13. The snap-fit portion can be a rod or a protrusion provided in the radial direction on the outer surface of the valve stem 13. The valve stem 13 and the closure 2 cooperate with the snap-fit portion and the snap-fit groove to drive the closure 2 to rotate, and the cover plate 14 is provided on the top of the valve body 1 to seal the cavity 11 through the cover plate 14 to prevent gas leakage. The cover plate 14 is provided with a groove 141 on the side facing the cavity 11. The grooves 141 are arranged at intervals so that when the valve stem 13 rotates, the snap-fit portion cooperates with the groove 141, and then the user is fed back to the user through the closure 2 and the valve stem 13 to adjust the gear feel of the lower stage valve as the angle changes, so as to improve the user experience.

[0054] This embodiment also provides a burner, which includes the above-mentioned stage valve.

[0055] Specifically, the burner includes at least three fire covers, namely the inner ring fire cover, the middle ring fire cover and the outer ring fire cover, which are connected to the inner ring gas channel 121, the middle ring gas channel and the outer ring gas channel respectively. Gas is supplied to the three fire covers through the above-mentioned stage valve. On the basis of increasing the air intake entering the stage valve and reducing the gas pressure drop, the burner can meet the needs of users.

[0056] This embodiment also provides a gas cooker including the aforementioned burner. Based on the burner having the aforementioned stage valve, the gas cooker achieves high-power, high-efficiency combustion performance while also achieving uniform fire distribution over a large area, thereby meeting the power and flame distribution requirements of various Chinese cooking styles.

[0057] 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 protection 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 protection of the present invention.

Claims

1. A sectional valve, comprising a valve body, wherein the valve body has a cavity for accommodating a stopper, wherein the stopper comprises an inner stopper and an outer stopper sleeved on the outer circumference of the inner stopper, characterized in that: The valve body includes at least three gas channels, which are arranged in sequence along the height direction of the cavity and are all connected to the cavity. The first end of the outer closure is arranged flush with the air inlet end of the cavity, and the inner closure is arranged away from the air inlet end. The end of the inner closure facing the air inlet end is spaced apart from the first end of the outer closure along the height direction of the cavity, and the spacing distance is at least the distance between one gas channel and the air inlet end.

2. The sectional valve according to claim 1, characterized in that: One of the at least three gas channels is an inner ring gas channel, the inner ring gas channel is connected to the air inlet end through the inner closure, and the inner ring gas channel is arranged away from the air inlet end.

3. The sectional valve according to claim 2, characterized in that: Two of the at least three gas channels are respectively a middle ring gas channel and an outer ring gas channel, and the middle ring gas channel is arranged close to the gas inlet end; Or the outer ring gas channel is arranged close to the air inlet end.

4. The sectional valve according to claim 3, characterized in that: The distance between the end of the inner closer facing the air inlet end and the first end of the outer closer is the sum of the distances from the middle ring gas channel and the outer ring gas channel to the air inlet end.

5. The sectional valve according to claim 2, characterized in that: The outer closer and the inner closer are both provided with flow holes, and the size of the flow hole on the outer closer is larger than the size of the flow hole on the inner closer.

6. The sectional valve according to claim 5, characterized in that: The flow hole of the inner stopper corresponding to the inner ring gas channel is a circular hole or an elliptical hole.

7. The sectional valve according to claim 3, characterized in that: When the closer rotates 90° from the zero position, the closer is only connected to the inner ring gas channel and the middle ring gas channel. When the closer rotates 135° from the zero position, the closer is connected to the inner ring gas channel, the middle ring gas channel and the outer ring gas channel.

8. The sectional valve according to claim 1, characterized in that: The valve body further includes a valve stem connected to the shutter, the valve stem is provided with a clamping portion along the radial direction, and the cover plate of the valve body is provided with a groove corresponding to the clamping portion.

9. A burner, characterized in that: The burner comprises the section valve according to any one of claims 1 to 8.

10. A gas cooker, characterized in that: The gas cooker comprises the burner according to claim 9.

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