Valve cover, plug valve and stove

Abstract

The present invention provides a valve cover, a stopcock and a stove, belonging to the technical field of kitchen and bathroom appliances. The valve cover includes a body, a center hole and a cover-shaped portion. The center hole is arranged at the center of the body. The cover-shaped portion is formed by a surface of the body extending vertically outward, and is used to match the valve body to form an installation space. In the cover-shaped portion, near the bottom, a 0-degree limit block, a 90-degree limit block and a 180-degree limit block are arranged in a clockwise direction, and a gap is provided between the roots of all the limit blocks and the bottom of the cover-shaped portion to form a groove. The groove ensures that when the stopcock is rotated to the 90-degree limit, it will not be unable to press down due to the valve cover limit when it continues to rotate downward. It can continue to press down to start stir-frying, thereby ensuring the user's downward pressure stir-frying experience. As a result, the stopcock valve with the above-mentioned valve cover and the stove with the above-mentioned stopcock valve can start the stir-frying function normally, so that the user has a good downward pressure stir-frying experience.

Description

Technical Field

[0001] The present invention relates to kitchen and bathroom electrical appliances, in particular to a valve cover, a plug valve and a stove. Background Art

[0002] Generally speaking, in order to cater to the habit of some Chinese people to stir-fry with high heat, the heat load of stoves on the market is getting larger and larger. 5.0kW or 5.2kW high load has become the standard. However, some users still feel that the firepower is too small after using high-load stoves to meet the needs of stir-frying. Therefore, some manufacturers refer to the concept or function of one-button stir-frying on range hoods and propose one-button stir-frying stoves. When the one-button stir-frying is started, the stove's instantaneous firepower will be immediately increased to meet the user's needs for stir-frying.

[0003] Currently, there are two ways to start stir-frying: one is to control the stir-frying using a touch panel, and the other is to press down on the plug valve to start the stir-frying. The plug valve is used as an example to illustrate: the plug valve consists of a valve cover, valve shaft, limit paddle, microswitch pressure plate, valve core, first microswitch, second microswitch, valve body, and magnetic encoder. The limit paddle, microswitch pressure plate, and valve core are mounted on the valve shaft, and the limit paddle and valve core rotate with the valve shaft. The limit paddle cooperates with the first microswitch to control ignition, while the microswitch pressure plate cooperates with the second microswitch to control stir-frying.

[0004] When the plug valve is rotated to 90 degrees, a structural limit is set in the valve cover according to standard requirements. If it exceeds 90 degrees, it will be impossible to press down due to the limit, resulting in the inability to realize the stir-fry function, affecting the user's press-down stir-fry experience. Summary of the Invention

[0005] The purpose of the present invention is to provide a valve cover, which can solve the problem that the rotary valve cannot be pressed down after rotating more than 90 degrees, realize the stir-frying function, and improve the user's press-down stir-frying experience.

[0006] Another object of the present invention is to provide a plug valve with the valve cover.

[0007] Another object of the present invention is to provide a cooker with the plug valve.

[0008] To achieve the purpose of the present invention, the present invention adopts the following technical solutions:

[0009] According to one aspect of the present invention, there is provided a valve cover, comprising:

[0010] ontology;

[0011] a center hole, provided at the center of the body and penetrating the body, for passing the valve shaft; and

[0012] A cover-shaped portion is formed vertically outward from a surface of the main body and is used to match the valve body to form an installation space;

[0013] Among them, at a position near the bottom of the cover-like portion, a 0-degree limit block, a 90-degree limit block and a 180-degree limit block are provided in a clockwise direction, and a gap is provided between the root of the limit block and the bottom of the cover-like portion to form a groove.

[0014] According to one embodiment of the present invention, a first limit block is provided at a local position between the 0-degree limit block and the 90-degree limit block in the cover-shaped portion, a slope is formed between the position of the starting point and the position of the end point in the first limit block, the slope of the end point position of the first limit block is 0, and the rotation surface is between the end point position of the first limit block and the 180-degree limit block.

[0015] According to another aspect of the present invention, there is provided a plug valve comprising:

[0016] The valve cover comprises a body, a center hole and a cover-shaped portion. The center hole is provided at the center of the body and passes through the body for passing the valve shaft. The cover-shaped portion is formed by a surface of the body extending vertically outward and is used to match the valve body to form an installation space. A 0-degree limit block, a 90-degree limit block and a 180-degree limit block are provided in a clockwise direction near the bottom of the cover-shaped portion. A gap is provided between the base of the limit block and the bottom of the cover-shaped portion to form a groove.

[0017] The valve shaft is installed at the center hole of the valve cover and can rotate freely relative to the center hole;

[0018] The limit paddle, the micro switch pressing piece and the valve core are installed on the valve shaft in order from top to bottom. The limit paddle and the valve core rotate with the valve shaft, so that the limit paddle rotates between the limit blocks of the valve cover, and the valve shaft drives the valve core to rotate, so as to realize the opening and closing of the plug valve;

[0019] A first micro switch is provided below the valve cover and matches the limit paddle to control ignition;

[0020] A second micro switch is provided below the valve cover and matches the micro switch pressing piece to control stir-frying;

[0021] a valve body, matched with the valve cover to form an installation space; and

[0022] The magnetic encoder is arranged below the valve body and matches the magnet in the valve core to realize angle detection.

[0023] According to one embodiment of the present invention, a first limit block is provided at a local position between the 0-degree limit block and the 90-degree limit block in the cover-shaped portion, and a slope is formed between the starting point and the end point of the first limit block. The slope of the end point of the first limit block is 0, so that the limit paddle has a smooth transition, and the rotation surface between the end point of the first limit block and the 180-degree limit block is a rotation surface, so that the limit paddle slides smoothly in the valve cover.

[0024] According to an embodiment of the present invention, the valve core further includes an air outlet hole, which is arranged along the radial direction of the valve core, is arranged at a position close to the magnet, and passes through the valve core for positioning.

[0025] According to one embodiment of the present invention, a valve shaft rubber ring is provided at the valve shaft to prevent water from entering the interior of the plug valve along the valve shaft.

[0026] According to an embodiment of the present invention, a valve cover rubber ring is provided at the center hole of the valve cover to prevent water from entering the first micro switch and the second micro switch along the valve cover.

[0027] According to one embodiment of the present invention, the magnetic encoder includes an upper shell, the size of the upper shell is larger than that of the magnetic encoder to prevent water, and ribs are provided in the upper shell to prevent insects.

[0028] According to another aspect of the present invention, a cooker is provided, comprising the above-mentioned stopcock valve.

[0029] According to one embodiment of the present invention, the stove further comprises:

[0030] Inner ring gas path, used to generate inner ring flame;

[0031] Outer ring gas path, used for generating outer ring flame;

[0032] A stir-frying air supply circuit, wherein a pressure-stabilizing valve is provided and configured to be openably and closably connected to the inner ring air circuit and / or the outer ring air circuit, so as to increase the instantaneous flow of the inner ring air circuit and / or the outer ring air circuit during stir-frying;

[0033] Wherein, the stopcock valve is arranged at the inner ring air circuit and the outer ring air circuit, and is configured to open and close the inner ring air circuit and / or the outer ring air circuit, and start stir-frying.

[0034] An embodiment of the present invention has the following advantages or beneficial effects:

[0035] The valve cover of the present invention includes a main body, a center hole and a cover-shaped portion. The cover-shaped portion is formed by a surface of the main body extending vertically outward, and is used to match the valve body to form an installation space. At a position near the bottom of the cover-shaped portion, a 0-degree limit block, a 90-degree limit block and a 180-degree limit block are provided in a clockwise direction, and a gap is provided between the roots of all the limit blocks and the bottom of the cover-shaped portion to form a groove. The groove ensures that when the plug valve is rotated to the 90-degree limit, when it continues to rotate downward, it will not be unable to press down due to the valve cover limit, and it can continue to press down to start the stir-frying, thereby ensuring the user's downward pressure stir-frying experience.

[0036] Therefore, the stopcock valve with the valve cover and the stove with the stopcock valve can normally start the stir-frying function, so that the user has a good pressure stir-frying experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the accompanying drawings.

[0038] Figure 1 is a schematic perspective view of a valve cover at an angle according to an exemplary embodiment;

[0039] Figure 2 is based on Figure 1 A schematic perspective view of the valve cover from another angle;

[0040] Figure 3 is based on Figure 1 A schematic front view of the valve cover is shown;

[0041] Figure 4 is a schematic assembly diagram of a plug valve according to an exemplary embodiment;

[0042] Figure 5 is based on Figure 4 A schematic exploded view of the plug valve is shown;

[0043] Figure 6 is based on Figure 5 Schematic assembly diagram of the valve cover, valve shaft, limit paddle and micro switch pressing piece when assembled together;

[0044] Figure 7 is based on Figure 4 A partial schematic diagram of a plug valve is shown;

[0045] Figure 8 yes Figure 4 A schematic perspective view of the valve core is shown;

[0046] Figure 9 FIG. 1 is a schematic cross-sectional view showing a plug valve applied to a cooker according to an exemplary embodiment.

[0047] The description of the accompanying drawings is as follows:

[0048] 1 cooktop,

[0049] 100 plug valve,

[0050] 10 valve cover, 11 body, 12 center hole, 13 valve cover rubber ring, 14 cover-shaped portion, 141 0 degree stopper, 142 90 degree stopper, 143 180 degree stopper, 144 groove, 145 first stopper, 146 slope, 147 rotating surface,

[0051] A 0 degree limit, start position, B 90 degree limit, high fire position, C 180 degree limit, low fire position,

[0052] 20 valve shaft, 21 valve shaft rubber ring,

[0053] 30 limit paddles,

[0054] 40 micro switch pressing piece,

[0055] 50 valve core, 51 magnet, 52 air outlet,

[0056] 60 first micro switch,

[0057] 70 second micro switch,

[0058] 80 valve body,

[0059] 90 magnetic encoder, 91 upper shell,

[0060] 200 inner ring gas circuit,

[0061] 300 outer ring gas line,

[0062] 400 stir-fry to replenish the air,

[0063] 500 pressure regulating valve. DETAILED DESCRIPTION

[0064] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent like or similar structures, and thus their detailed description will be omitted.

[0065] The terms "a", "an", "the", and "said" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to express an open-ended inclusive meaning and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc.

[0066] like Figure 1-Figure 3 As shown, Figure 1 FIG1 is a schematic perspective view of a valve cover at an angle according to an exemplary embodiment. Figure 2 is based on Figure 1 A schematic perspective view of the valve cover from another angle is shown. Figure 3 is based on Figure 1 A schematic front view of the valve cover is shown.

[0067] like Figure 1 See also Figure 2-Figure 3 The valve cover 10 of the embodiment of the present invention can generally include: a body 11, a center hole 12 and a cover-shaped portion 14. The center hole 12 is set at the center position of the body 11 and passes through the body 11 for passing the valve shaft. The cover-shaped portion 14 is formed by a surface of the body 11 perpendicularly outward, and is used to match the valve body to form an installation space. Among them, at a position near the bottom of the cover-shaped portion 14, a 0-degree limit block 141, a 90-degree limit block 142 and a 180-degree limit block 143 are provided in a clockwise direction, and a gap is provided between the root of the limit block and the bottom of the cover-shaped portion 14 to form a groove 144.

[0068] like Figure 3 As shown in the figure, position A indicates the 0 degree limit, the start position. Position B indicates the 90 degree limit, the high fire position. Position C indicates the 180 degree limit, the low fire position.

[0069] More specifically, the groove 144 designed on the valve cover 10 has a depth within the range of a downward pressing stroke of ±1 mm. Typically, based on a downward pressing stroke of 3.5 mm, the depth of the groove 144 is between 2.5 mm and 4.5 mm.

[0070] The function of the groove 144 is that when the stopcock is rotated to the 90-degree limit, when it continues to rotate downward, it will not be unable to press down due to the limit in the valve cover 10, and it can continue to press down to start stir-frying, thereby ensuring the user's downward pressure stir-frying experience.

[0071] In the process of realizing the present invention, the inventors also discovered that the existing valve cover is provided with a limit step between the 0-degree limit block and the 180-degree limit block. When the existing plug valve is turned from a low-fire position to a high-fire position, the limit paddle and the limit step in the valve cover will interfere with each other during the rotation process. The limit paddle is always tilted, and the limit paddle interferes with the microswitch pressing piece, causing the microswitch pressing piece to swing greatly, which not only causes the microswitch paddle to fluctuate, but also causes the microswitch paddle to contact the microswitch piece, causing the stir-fry microswitch to be accidentally touched, causing the stir-fry to start abnormally, affecting the user experience. Based on this,

[0072] In a preferred embodiment of the present invention, Figure 1 See also Figure 2-Figure 3 A first limit block 145 is provided at a local position between the 0-degree limit block 141 and the 90-degree limit block 142 in the cover-shaped portion 14. A slope 146 is formed between the starting point position (left position) and the end point position (right position) of the first limit block 145. The slope of the end point position of the first limit block 145 is 0, and a rotating surface 147 is formed between the end point position of the first limit block 145 and the 180-degree limit block 143.

[0073] In this embodiment, Figure 1 See also Figure 2-Figure 3 The existing valve cover's stop step is modified into a localized first stop block 145, and a slope 146 is designed within the first stop block 145. The slope 146 allows the stop paddle 30 to be initially stopped at the 0-degree position. Pressing the knob downward releases the 0-degree stop, providing a smooth transition for the stop paddle 30, ensuring the 0-degree stop function. Furthermore, after the knob is pressed downward and released, the stop paddle 30 is lifted upward by the spring, returning to its initial position.

[0074] More specifically, if Figure 1 See also Figure 2-Figure 3 The slope at the end of the first limit block 145 is zero. A rotational surface 147 is formed between the end of the first limit block 145 and the 180-degree limit block 143, eliminating the conventional limit step within this range. During the rotation process, the limit paddle 30 is flat after passing the slope 146, avoiding interference and reducing the swing of the microswitch pressing piece 40, thereby preventing the fluctuation of the microswitch pressing piece 40 when switching from the high-fire position to the low-fire position, or vice versa.

[0075] like Figure 4-Figure 8 As shown, Figure 4 is a schematic assembly diagram of a plug valve according to an exemplary embodiment. Figure 5 is based on Figure 4 A schematic exploded view of a plug valve is shown. Figure 6 is based on Figure 5 The figure shows a schematic assembly diagram of the valve cover, valve shaft, limit paddle and micro switch pressing piece when assembled together. Figure 7 is based on Figure 4 A partial schematic diagram of a plug valve is shown. Figure 8 yes Figure 4 A schematic perspective view of the valve core is shown.

[0076] When the plug valve in the prior art is rotated to 90 degrees, a structural limit is set in the valve cover according to standard requirements. If the valve is rotated beyond 90 degrees, it will not be able to be pressed down due to the limit, resulting in the inability to realize the stir-fry function, affecting the user's stir-fry experience. Based on this,

[0077] like Figure 5 See also Figure 4 、 Figure 6-Figure 8 , this embodiment provides a ball valve 100, which generally may include: a valve cover 10, a valve shaft 20, a limit paddle 30, a microswitch pressing piece 40, a valve core 50, a first microswitch 60, a second microswitch 70, a valve body 80 and a magnetic encoder 90. The valve cover 10 includes a main body 11, a center hole 12 and a cover-like portion 14. The center hole 12 is arranged at the center position of the main body 11 and passes through the main body 11 for passing the valve shaft 20. The cover-like portion 14 is formed by a surface of the main body 11 extending vertically outward and is used to match the valve body 80 to form an installation space. At a position near the bottom of the cover-like portion 14, a 0-degree limit block 141, a 90-degree limit block 142 and a 180-degree limit block 143 are provided in a clockwise direction. There is a gap between the roots of all the limit blocks and the bottom of the cover-like portion 14 to form a groove 144. The valve shaft 20 is mounted in the center hole 12 of the valve cover 10 and can rotate freely relative to the center hole 12. The limit paddle 30, microswitch pressing plate 40, and valve core 50 are mounted on the valve shaft 20 in order from top to bottom. The limit paddle 30 and valve core 50 rotate with the valve shaft 20, allowing the limit paddle 30 to rotate between the limit blocks of the valve cover 10. The valve shaft 20 drives the valve core 50 to rotate, opening and closing the plug valve 100. A first microswitch 60 is located below the valve cover 10 and mates with the limit paddle 30 to control ignition. A second microswitch 70 is located below the valve cover 10 and mates with the microswitch pressing plate 40 to control stir-frying. The valve body 80 is mounted on the valve cover 10 to form a mounting space. A magnetic encoder 90 is located below the valve body 80 and mates with the magnet 51 in the valve core 50 to detect angles.

[0078] This embodiment specifically improves the valve cover of the existing plug valve. No other components are improved in this embodiment. The working principles of other components are the same as those of the plug valve in the prior art. The working principles of other components are not further described in this embodiment.

[0079] More specifically, if Figure 1 See also Figure 2-Figure 3 The groove 144 designed on the valve cover 10 has a depth within the range of ±1 mm in the downward stroke. Usually, according to the downward stroke of 3.5 mm, the depth of the groove 144 is between 2.5 mm and 4.5 mm.

[0080] The function of the groove 144 is that when the stopcock 100 is rotated to the 90-degree limit, when it continues to rotate downward, it will not be unable to press down due to the limit in the valve cover 10, and it can continue to press down to start stir-frying, thereby ensuring the user's downward pressure stir-frying experience.

[0081] In the process of realizing the present invention, the inventors also discovered that the existing valve cover is provided with a limit step between the 0-degree limit block and the 180-degree limit block. When the existing plug valve is turned from a low-fire position to a high-fire position, the limit paddle and the limit step in the valve cover will interfere with each other during the rotation process. The limit paddle is always tilted, and the limit paddle interferes with the microswitch pressing piece, causing the microswitch pressing piece to swing greatly, which not only causes the microswitch paddle to fluctuate, but also causes the microswitch paddle to contact the microswitch piece, causing the stir-fry microswitch to be accidentally touched, causing the stir-fry to start abnormally, affecting the user experience. Based on this,

[0082] In a preferred embodiment of the present invention, Figure 1 See also Figure 2-Figure 3 、 Figure 6-Figure 7 A first limit block 145 is provided at a local position between the 0-degree limit block 141 and the 90-degree limit block 142 in the cover-shaped portion 14. A slope 146 is formed between the starting point and the end point of the first limit block 145. The slope of the end point of the first limit block 145 is 0, so that the limit paddle 30 has a smooth transition. A rotating surface 147 is formed between the end point of the first limit block 145 and the 180-degree limit block 143, so that the limit paddle 30 slides smoothly in the valve cover 10.

[0083] In this embodiment, Figure 1 See also Figure 2-Figure 3 ,, Figure 6-Figure 7 , the limiting step of the valve cover in the prior art is transformed into a local first limiting block 145, and a slope 146 is designed in the first limiting block 145. Figure 6 As shown, the slope 146 acts, the limit paddle 30 is limited at the initial 0 degree position, and after the knob is pressed down, it leaves the 0 degree limit, giving the limit paddle 30 a smooth transition, ensuring the 0 degree limit effect. At the same time, after the knob is pressed down to leave the limit, the limit paddle 30 is lifted up under the action of the spring, so that the limit paddle 30 returns to the initial position.

[0084] More specifically, if Figure 1 See also Figure 2-Figure 3 、 Figure 6-Figure 7 The slope of the end position of the first limit block 145 is 0, and the area between the end position of the first limit block 145 and the 180-degree limit block 143 is the rotation surface 147, that is, the limit step in the prior art is eliminated within this range. Figure 6 As shown, during the rotation process, the limit paddle 30 is flat after the slope 146, avoiding interference, reducing the swing of the micro switch pressing piece 40, and avoiding the problem of fluctuation of the micro switch pressing piece 40 when rotating from the high fire position to the low fire position, or from the low fire position to the high fire position.

[0085] The inventors discovered during the process of implementing the present invention that the control part of the plug valve in the prior art is generally controlled by assembling a magnet on the valve core, and an inductive encoder is set at the bottom of the valve body. When assembling the magnet, due to the influence of the magnetic poles N and S, there is a sudden voltage change in a small interval, causing an error in the stir-frying angle, making it impossible for users to stir-fry at the original stir-frying angle, affecting the user experience. Based on this,

[0086] In a preferred embodiment of the present invention, Figure 8 As shown, the valve core 50 further includes an air outlet 52 , which is arranged along the radial direction of the valve core 50 , close to the magnet 51 , and passes through the valve core 50 for positioning.

[0087] During the assembly process of the valve core 50 and the magnet 51, since the magnet 51 has an N pole and an S pole, the N pole or the S pole is attracted by the tooling during assembly and positioned through the air outlet 52 of the valve core 50 to ensure that when the valve core 50 is turned to the stir-fry position, usually defined as the 90-degree high-fire position, the N pole ±30 degree range is not within this interval, avoiding falling into the intersection interval of 0 degrees and 360 degrees, causing stir-fry angle errors.

[0088] The inventors also discovered during the process of implementing the present invention that the existing plug valve, when in use, has a short sensing distance of 1mm-10mm between the magnet and the magnetic encoder due to the magnetic sensing distance requirement. This makes it difficult to achieve waterproofing and insect-proofing within this sensing distance, causing the entire encoder to easily be infiltrated by water or insects, resulting in overall functional failure. Based on this,

[0089] In a preferred embodiment of the present invention, Figure 4 As shown, a valve shaft rubber ring 21 is provided at the valve shaft 20 to prevent water from entering the interior of the plug valve 100 along the valve shaft 20 .

[0090] More specifically, if Figure 4 As shown, a valve cover rubber ring 13 is provided at the center hole 12 of the valve cover 10 to prevent water from entering the first micro switch 60 and the second micro switch 70 along the valve cover 10 .

[0091] More specifically, if Figure 4As shown, the magnetic encoder 90 includes an upper shell 91. The size of the upper shell 91 is larger than that of the magnetic encoder 90 to prevent water. Ribs are provided in the upper shell 91 to prevent insects.

[0092] In this embodiment, the entire plug valve 100 is designed with a triple waterproof structure in its structural design to ensure reliable micro-switch connection and micro-movement of the magnetic encoder 90 during use.

[0093] like Figure 9 As shown, Figure 9 FIG. 1 is a schematic cross-sectional view showing a plug valve applied to a cooker according to an exemplary embodiment.

[0094] A stove 1 according to an embodiment of the present invention includes the aforementioned stopcock valve 100. The structure of the stopcock valve 100 in this embodiment is identical to that of the previous embodiment, and the structural details of the stopcock valve 100 will not be further described in this embodiment. The stove 1 in this embodiment includes the aforementioned stopcock valve 100, so the stir-fry function can be properly activated using the stopcock 100, providing the user with a pleasant stir-fry experience.

[0095] More specifically, if Figure 9 As shown, the cooker 1 generally includes an inner air circuit 200, an outer air circuit 300, and a stir-fry air supply circuit 400. The inner air circuit 200 is used to generate an inner flame. The outer air circuit 300 is used to generate an outer flame. A pressure-stabilizing valve 500 is provided in the stir-fry air supply circuit 400. The pressure-stabilizing valve 500 is configured to be openably and closably connected to the inner air circuit 200 and / or the outer air circuit 300 to increase the instantaneous flow rate of the inner air circuit 200 and / or the outer air circuit 300 during stir-frying. Plug valves 100 are provided in the inner air circuit 200 and the outer air circuit 300 and are configured to open and close the inner air circuit 200 and / or the outer air circuit 300, as well as to initiate stir-frying.

[0096] Among them, the control principles of the plug valve 100 and the control principles of the pressure-stabilizing valve 500 are the same as those of the plug valve and the pressure-stabilizing valve in the prior art. Regarding the above control principles, this embodiment will not elaborate on them.

[0097] In the embodiments of the present invention, the term "plurality" refers to two or more, unless otherwise specified. Terms such as "installed," "connected," and "fixed" should be interpreted broadly. For example, "connected" can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art will understand the specific meanings of these terms in the embodiments of the present invention based on specific circumstances.

[0098] In the description of the embodiments of the present invention, it should be understood that the terms "upper" and "lower" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the embodiments of the present invention.

[0099] Throughout this specification, terms such as "one embodiment" and "a preferred embodiment" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0100] The above is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations are possible in the present invention. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A valve cover, characterized in that: include: Ontology(11); a center hole (12), which is provided at the center of the body (11) and passes through the body (11) for passing the valve shaft; and A cover-shaped portion (14) is formed vertically outward from a surface of the body (11) and is used to match the valve body to form an installation space; Wherein, at a position near the bottom of the cover-shaped portion (14), a 0-degree limit block (141), a 90-degree limit block (142) and a 180-degree limit block (143) are provided in a clockwise direction, and a gap is provided between the root of the limit block and the bottom of the cover-shaped portion (14) to form a groove (144); a first limit block (145) is provided at a local position between the 0-degree limit block (141) and the 90-degree limit block (142) in the cover-shaped portion (14), and a slope (146) is formed between the starting point position and the end point position of the first limit block (145), the slope of the end point position of the first limit block (145) is 0, and a rotation surface (147) is formed between the end point position of the first limit block (145) and the 180-degree limit block (143).

2. A plug valve, characterized in that: include: A valve cover (10) comprises a body (11), a center hole (12) and a cover-shaped portion (14), wherein the center hole (12) is provided at the center position of the body (11) and passes through the body (11) for passing the valve shaft (20), and the cover-shaped portion (14) is formed by perpendicularly extending a surface of the body (11) outwards and is used to match the valve body (80) to form an installation space, and a 0-degree limit block (141), a 90-degree limit block (142) and a 180-degree limit block (143) are provided in a clockwise direction at a position near the bottom of the cover-shaped portion (14), and a gap is provided between the base of the limit block and the bottom of the cover-shaped portion (14) to form a groove (144); A valve shaft (20) is mounted on the center hole (12) of the valve cover (10) and is freely rotatable relative to the center hole (12); The limit paddle (30), the micro switch pressing piece (40) and the valve core (50) are installed on the valve shaft (20) in order from top to bottom. The limit paddle (30) and the valve core (50) rotate with the valve shaft (20), so that the limit paddle (30) rotates between the limit blocks of the valve cover (10), and the valve shaft (20) drives the valve core (50) to rotate, so as to realize the opening and closing of the plug valve (100); A first micro switch (60) is provided below the valve cover (10) and matches the limit paddle (30) to control ignition; A second micro switch (70) is provided below the valve cover (10) and matches the micro switch pressing piece (40) to control stir-frying; A valve body (80) is matched with the valve cover (10) to form an installation space; as well as A magnetic encoder (90) is provided below the valve body (80) and matches the magnet (51) in the valve core (50) to achieve angle detection; A first limiting block (145) is provided at a local position between the 0-degree limiting block (141) and the 90-degree limiting block (142) in the cover-shaped portion (14). A slope (146) is formed between the starting point and the end point of the first limiting block (145). The slope of the end point of the first limiting block (145) is 0, so that the limiting paddle (30) transitions smoothly. A rotating surface (147) is formed between the end point of the first limiting block (145) and the 180-degree limiting block (143), so that the limiting paddle (30) slides smoothly in the valve cover (10).

3. The plug valve according to claim 2, characterized in that The valve core (50) further comprises an air outlet hole (52), which is arranged along the radial direction of the valve core (50), is arranged at a position close to the magnet (51), and passes through the valve core (50) for positioning.

4. The plug valve according to claim 2, characterized in that A valve shaft rubber ring (21) is provided at the valve shaft (20) to prevent water from entering the interior of the plug valve (100) along the valve shaft (20).

5. The plug valve according to claim 2, characterized in that A valve cover rubber ring (13) is provided at the center hole (12) of the valve cover (10) to prevent water from entering the first micro switch (60) and the second micro switch (70) along the valve cover (10).

6. The plug valve according to any one of claims 2 to 5, characterized in that: The magnetic encoder (90) comprises an upper shell (91), the size of the upper shell (91) being larger than the size of the magnetic encoder (90) to prevent water, and ribs are provided in the upper shell (91) to prevent insects.

7. A stove, characterized in that: A plug valve (100) comprising any one of claims 2 to 6.

8. The cooker according to claim 7, characterized in that: The cooker (1) further comprises: An inner ring gas path (200) for generating an inner ring flame; An outer ring gas path (300) for generating an outer ring flame; A stir-frying air supply circuit (400) is provided with a pressure-stabilizing valve (500) configured to be openably and closably connected to the inner ring air circuit (200) and / or the outer ring air circuit (300) to increase the instantaneous flow of the inner ring air circuit (200) and / or the outer ring air circuit (300) during stir-frying; The stopcock valve (100) is arranged at the inner ring gas circuit (200) and the outer ring gas circuit (300), and is configured to open and close the inner ring gas circuit (200) and / or the outer ring gas circuit (300), and to start stir-frying.

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