Valve element and plug valve with same

Abstract

The invention provides a valve element and a plug valve with the valve element, and belongs to the technical field of gas stoves, the valve element comprises a valve element body, the side wall of the valve element body is provided with a first air inlet hole set used for air inflow when the valve element body is started in the forward direction, and the first air inlet hole set comprises a plurality of first air inlet holes distributed in the circumferential direction of the valve element body; the central axes of every two adjacent first air inlet holes are arranged in an up-down staggered mode. According to the valve element, an air inlet path is added, in the gear shifting process, the variable flow speed is slowed down, the stable air inlet flow speed is achieved, and stable combustion is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of gas stoves, and in particular to a valve core and a plug valve having the same. Background Art

[0002] In household gas stoves, plug valves are usually used to control the opening and closing of the stove, the on and off of gas, and the adjustment of the firepower. As an important part of the plug, the valve core can be used to control the gas flow rate, thereby achieving the purpose of adjusting the firepower. However, as the valve core is changed from stepless adjustment to precise gear control, the firepower of each gear has also changed from the previous continuous change to intermittent change. That is, in the process of gear switching, the firepower is affected by the size of the front and rear apertures. As the aperture suddenly becomes smaller, the instantaneous gas flow rate increases, that is, the instantaneous time difference between gears causes obvious changes in firepower, resulting in unstable flame transmission, easy flame separation or instantaneous deflagration, affecting user experience. Summary of the invention

[0003] The first technical problem to be solved by the present invention is to provide a valve core that increases the intake path, slows down the changing flow rate, achieves a stable intake flow rate, and achieves stable combustion in the process of shifting gears, with the aim of solving the problems of the prior art.

[0004] The second technical problem to be solved by the present invention is to provide a plug valve applied to the valve core.

[0005] The technical solution adopted by the present invention to solve the above-mentioned first technical problem is: a valve core, the valve core includes a valve core body, and the side wall of the valve core body is provided with a first air inlet hole group for air intake when the valve core body is positively started, the first air inlet hole group includes a plurality of first air inlet holes distributed along the circumference of the valve core body, and the central axes of two adjacent first air inlet holes are staggered up and down.

[0006] According to an embodiment of the present invention, as the forward angle of the valve core body increases, the apertures of the plurality of first air inlet holes all tend to increase first and then decrease.

[0007] According to one embodiment of the present invention, the valve core body has a valve core cavity, at least one of the multiple first air inlet holes is a blind hole, and the other first air inlet holes are through holes, and the hole wall of each of the blind holes is respectively provided with an air through hole, and each of the blind holes is connected to the through hole closest to it through the air through hole, so that the gas enters the valve core cavity through the air through hole and the through hole connected thereto.

[0008] According to an embodiment of the present invention, there are a plurality of the air holes, and the apertures of the plurality of air holes decrease as the rotation angle increases.

[0009] According to an embodiment of the present invention, there are a plurality of air holes, central axes of the plurality of air holes are not coplanar, and an air outlet end of each air hole partially overlaps with an air inlet end of an adjacent air hole.

[0010] According to one embodiment of the present invention, the valve core also includes a second air inlet hole group for air intake when the valve core body is started in reverse, the second air inlet hole group includes a plurality of second air inlet holes distributed along the circumference of the valve core body, and the apertures of the plurality of second air inlet holes decrease as the forward rotation angle of the valve core body increases.

[0011] According to an embodiment of the present invention, the central axes of adjacent second air inlet holes are arranged in a vertically staggered manner.

[0012] According to one embodiment of the present invention, the valve core body further includes

[0013] A first air outlet group is arranged on the side wall of the valve core body, and includes a plurality of first air outlets arranged circumferentially along the side wall of the valve core body;

[0014] The second air outlet is provided on the bottom wall of the valve core body.

[0015] Wherein, the plurality of first air outlet holes and the second air outlet holes are connected to the first air inlet hole group and the second air inlet hole group through the valve core cavity.

[0016] According to an embodiment of the present invention, the diameters of the plurality of first air outlet holes increase first and then decrease as the positive rotation angle of the valve core body increases.

[0017] According to an embodiment of the present invention, the number of the first air inlet holes is greater than the number of the first air outlet holes.

[0018] The technical solution adopted by the present invention to solve the above second technical problem is: a plug valve, the plug valve comprising;

[0019] A valve core as described in any of the above items;

[0020] A valve body having an air inlet pipe, a first air outlet pipe and a second air outlet pipe;

[0021] Wherein, the first air outlet group and the second air outlet are always connected to the second air outlet pipe;

[0022] When the valve core rotates in the reverse direction, the air inlet pipe, the first air inlet hole group, the first air outlet hole group and the second air outlet hole are connected, and the first air outlet hole group is connected or disconnected with the first air outlet pipe; when the valve core rotates in the forward direction, the air inlet pipe, the second air inlet hole group, the second air outlet hole and the second air outlet pipe are connected in sequence.

[0023] Compared with the prior art, the present invention has the following advantages or beneficial effects:

[0024] In the present invention, the first plurality of air inlet holes are axially staggered in the side wall of the valve core body, thereby increasing the air intake path, slowing down the changing flow rate, achieving a stable air intake flow rate, and realizing stable combustion on the stove during the gear shifting process.

[0025] The stopcock valve described in the present invention can be started in a forward direction and a reverse direction, which is convenient for users to directly start the stove with a low fire, avoiding the process of switching to a high fire and then adjusting to a low fire in the prior art, and making it convenient for users to achieve the desired load firepower by turning the knob once, thereby improving the user's cooking experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] 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 attached drawings.

[0027] Figure 1 is a schematic diagram of a valve core according to an exemplary embodiment.

[0028] Figure 2 is a right side view of a valve core shown according to an exemplary embodiment.

[0029] Figure 3 is a front view of a valve core shown according to an exemplary embodiment.

[0030] Figure 4 yes Figure 3 Section view in the AA direction.

[0031] Figure 5 yes Figure 3 Cross-sectional view in the BB direction.

[0032] Figure 6 is a schematic diagram showing the relative positions of a valve core and a gear position according to an exemplary embodiment.

[0033] Figure 7 is a schematic diagram of a plug valve shown according to an exemplary embodiment.

[0034] Figure 8 is an exploded view of a plug valve shown according to an exemplary embodiment. Description of the drawings:

[0036] 1. valve body; 10. valve body cavity; 11. air inlet pipe; 12. first air outlet pipe; 13. second air outlet pipe;

[0037] 2. Valve core; 20. Valve core cavity; 21. First air inlet hole group; 211. First air inlet hole; 212. Air passage hole; 22. Second air inlet hole group; 221. Second air inlet hole; 23. First air outlet hole group; 231. First air outlet hole; 24. Second air outlet hole. DETAILED DESCRIPTION

[0038] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0039] The terms "a", "an", "the", "" 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.

[0040] An embodiment of the present invention provides a valve core, such as Figure 1-6 As shown, the valve core includes a valve core body 2, and a first air inlet hole group 21 for air intake when the valve core body 2 rotates in the reverse direction is opened on the side wall of the valve core body 2. The first air inlet hole group 21 includes a plurality of first air inlet holes 211 distributed along the circumference of the valve core body 2, and the central axes of two adjacent first air inlet holes 211 are arranged in an up-down staggered manner. In this embodiment, as Figure 1-3 The multiple first air inlet holes 211 are arranged in an axially staggered manner along the side wall of the valve core body 2, so that in the process of switching gears, that is, the air inlet hole diameter becomes smaller or larger, the air inlet path is increased, the flow rate change is slowed down, the air inlet flow rate is stabilized, and stable combustion is achieved on the stove. Positive start means that the valve core 2 is in a state such as Figure 6 The OFF gear is indicated and the valve stem 3 rotates counterclockwise to achieve ignition, and after ignition, the required gear is selected for cooking; the first air inlet hole group 21 in the present application can provide the user with a firepower range from high fire to low fire, and the user can choose to start the stove in the forward direction when stir-frying or medium fire cooking is required.

[0041] In a preferred embodiment of the present invention, Figure 1-6 As shown in FIG. 1 , as the positive angle of the valve core body 2 increases, the apertures of the plurality of first air inlet holes 211 increase first and then decrease. Figure 1-6The firepower precision control of the five forward gears and the three reverse gears is illustrated, wherein the firepower of the multiple first air inlet holes 211 increases first and then decreases, wherein the first forward gear is a specific firepower adjustment point that is not the maximum fire, and is usually set to a commonly used non-high-fire cooking mode. This design can match the medium-temperature cooking mode by setting the aperture size; the second forward gear is the maximum load position, that is, the commonly used stir-fry mode; the third forward gear has a double-ring firepower reduction relative to the second forward gear, realizing firepower reduction control; the fourth forward gear has a double-ring firepower reduction relative to the third forward gear, realizing firepower reduction control; the fifth forward gear only has the inner ring to vent air, with the minimum firepower load; this design satisfies the user's need to switch to a low fire after cooking at a high fire to avoid the problem of excessive angle rotation, thereby improving the user's cooking experience. Of course, the number of forward gears can also be 3, 4, 5, 6, 7, 8, 9, 10 or even more, which can be designed according to user needs, and this application is not limited here.

[0042] In a preferred embodiment of the present invention, Figure 1-6 As shown, the valve core body 2 has a valve core cavity 10, at least one of the multiple first air inlet holes 211 is a blind hole, and the other first air inlet holes 211 are through holes. The hole wall of each blind hole is provided with an air hole 222, and each blind hole is connected to the through hole closest to it through the air hole 222, so that the gas transported by the air inlet pipe 11 enters the valve core cavity 10 through the air hole 222 and the through hole connected thereto. With the positive rotation of the valve core 2, the air outlet aperture of the first air inlet hole 211 first increases and then decreases. Especially when the air outlet aperture is small, there will be an instantaneous change in firepower in the interval between gears. At this time, some of the first air inlet holes 211 can be designed as blind holes, and the air holes 212 can be used to ensure the gradual reduction of the air intake during the gear switching process, so as to ensure a smooth conversion process and no instantaneous change in firepower due to the interval between gears. For example Figure 5-6 In the forward 2 gear high fire position, the forward 1 gear, forward 2 gear and forward 3 gear are all through holes and the corresponding apertures increase first and then decrease. The forward 4 gear and forward 5 gear are blind holes, and there is an air hole 212 between the forward 4 gear and the forward 5 gear for gear switching. The forward 4 gear and the forward 3 gear are designed with air holes 212. When the forward 3 gear is switched to the forward 4 gear, the firepower needs to be gradually reduced. If there is no air hole 212, since the interval section between the forward 4 gear and the forward 3 gear cannot take in air, the airflow will first become very small, then become larger, and then to a small process. The firepower will also have an instantaneous firepower change, affecting the user experience. The air hole 212 can realize the aperture size conversion between the gears and realize the smooth conversion of the firepower size.

[0043] In a preferred embodiment of the present invention, Figure 1-6As shown, there are multiple air holes 222, and the apertures of the multiple air holes 222 decrease as the rotation angle increases. For some applications where the gear position needs to be precisely controlled within a small range, when the aperture of the first air inlet 211 decreases, it is necessary to design multiple blind holes and air holes 212, such as the attached Figure 1-6 It illustrates a situation in which the forward 1st gear, the forward 2nd gear and the forward 3rd gear are all through holes and the corresponding apertures increase first and then decrease, while the forward 4th gear and the positive 5th gear are blind holes. As the firepower gradually decreases, the aperture of the air hole 212 also gradually becomes smaller, realizing the switching of the firepower reduction from the forward 4th gear to the positive 5th gear.

[0044] In a preferred embodiment of the present invention, Figure 1-6 As shown, there are multiple air holes 222, the central axes of the multiple air holes 222 are not coplanar, and the outlet end of each air hole 222 partially overlaps with the inlet end of the adjacent air hole 222. That is, there is a certain misalignment between two adjacent air holes to prevent the air flow from suddenly increasing or decreasing, and the certain misalignment between the two is used to achieve buffering of air flow changes.

[0045] In a preferred embodiment of the present invention, Figure 1-6 As shown, the valve core also includes a second air inlet hole group 22 for air intake when the valve core body 2 is reversely started. The second air inlet hole group 22 includes a plurality of second air inlet holes 221 distributed along the circumference of the valve core body 2. The apertures of the plurality of second air inlet holes 221 decrease as the positive rotation angle of the valve core body 2 increases. In this embodiment, reverse start refers to the valve core 2 being turned from Figure 6 The OFF gear is shown and the valve stem 3 rotates clockwise to achieve ignition, and after ignition, one of the reverse gears 1-3 is selected for cooking. Among them, as the reverse rotation angle of the valve core 2 increases, the apertures of the multiple second air inlet holes 221 gradually become smaller, and the multiple second air inlet holes 221 and the second air outlet holes 24 are used to cooperate to form a second firepower adjustment channel for delivering gas only to the second air outlet pipe 13. In the present application, the multiple second air inlet holes 221 all correspond to a low fire, and the firepower decreases as the reverse rotation angle increases. That is, the reverse start only sets the low fire gear firepower, and the user can directly start the low fire by directly reverse starting, eliminating the process of switching to a high fire and then adjusting to a low fire, thereby improving the user's cooking experience.

[0046] Preferably, in some designs, some of the second air inlet holes 221 with smaller apertures are designed as blind holes and air holes are designed on the hole walls of the blind holes.

[0047] An embodiment of the present invention provides a valve core, such as Figure 1-6As shown, the central axes of adjacent second air inlet holes 221 are arranged in an up-and-down staggered manner. The plurality of second air inlet holes 221 are arranged in an up-and-down staggered manner along the axial direction of the side wall of the valve core body 2, so that in the process of switching gears, that is, the air inlet aperture becomes smaller or larger, the air inlet path is increased, the changing flow rate is slowed down, a stable air inlet flow rate is achieved, and stable combustion is achieved on the cooker.

[0048] An embodiment of the present invention provides a valve core, such as Figure 1-6 As shown, the valve core body 2 further includes a first air outlet group 23 and a second air outlet 24. The first air outlet group 23 is arranged on the side wall of the valve core body 2, including a plurality of first air outlets 231 arranged circumferentially along the side wall of the valve core body 2; the second air outlet 24 is arranged on the bottom wall of the valve core body 2, wherein the plurality of first air outlets 231 and the second air outlet 24 are connected to the first air inlet group 21 and the second air inlet group 22 through the valve core cavity 10. Preferably, when the valve core is started in the forward direction, the air inlet pipe 11 of the valve body 1 is connected to the first air inlet group 21, and the gas in the first air inlet group 21 can be output through the first air outlet group 23 and the second air outlet 24 or the second air outlet 24. When the valve core is started in the reverse direction, the air inlet pipe 11 of the valve body 1 is connected to the second air inlet group 22 and the second air outlet 24, and as the clockwise rotation angle of the valve core increases, the air flow rate of the second firepower adjustment channel gradually decreases. In this way, the user can directly start the stove by reverse start, and start the stove directly to low heat, eliminating the process of turning to high heat and then adjusting to low heat, thereby improving the user's cooking experience.

[0049] In a preferred embodiment of the present invention, Figure 1-6 As shown, the apertures of the multiple first air outlet holes 231 increase first and then decrease as the positive rotation angle of the valve core body 2 increases. The positive rotation angle of this embodiment refers to the angle at which the valve core 2 rotates from the 0-degree position to the corresponding positive gear position, that is, the apertures of the multiple first air outlet holes 231 follow the same change pattern as the apertures of the multiple first air inlet holes 211, which first increase and then decrease. In this way, the consistent pattern of the gas inlet and outlet apertures can ensure accurate control of firepower, precise firepower control, and improve the user experience.

[0050] In a preferred embodiment of the present invention, Figure 1-6 As shown, the number of the first air inlet holes 211 is greater than the number of the first air outlet holes 231. Since the firepower of the first firepower adjustment channel increases first and then decreases, when its firepower is low, only the inner ring corresponding to the second air outlet pipe 13 needs to be fired. Therefore, the first air outlet pipe 12 needs to be disconnected at this time. Therefore, the number of the first air outlet holes 231 is less than the number of the first air inlet holes 211, and the first firepower adjustment channel is connected to the second firepower adjustment channel through the valve core cavity 20, which can meet the above requirements. The structure is ingenious and reasonable, and the gear shift is convenient.

[0051] The embodiment of the present invention provides a plug valve, such as Figure 7-8 The plug valve shown includes: the above-mentioned valve core and valve body 1, the valve body 1 has a valve body cavity 10 and an air inlet pipe 11, a first air outlet pipe 12 and a second air outlet pipe 13 connected to the valve body cavity 10; wherein the first air outlet hole group 23 and the second air outlet hole 24 are always connected to the second air outlet pipe 13; when the valve core rotates in the reverse direction, the air inlet pipe 11, the first air inlet hole group 21, the first air outlet hole group 23 and the second air outlet hole 24 are connected, and the first air outlet hole group 23 is connected or disconnected with the first air outlet pipe 12; when the valve core rotates in the forward direction, the air inlet pipe 11, the second air inlet hole group 22, the second air outlet hole 24 and the second air outlet pipe 13 are connected in sequence. The aperture of the first air inlet group 21 meets the needs of the stove from high fire to low fire, and the second air inlet group 22 is for the stove low fire. In this way, when cooking, the user only needs to make a choice. For example, when a low fire is needed, it is only necessary to drive the valve stem 3 to drive the valve core 2 to rotate clockwise for reverse start, which is convenient for the user to directly start the stove with a low fire, and go through the process of first turning to a high fire and then adjusting to a low fire; similarly, if a medium fire or a high fire is needed, it is only necessary to drive the valve stem 3 to drive the valve core 2 to rotate counterclockwise. The valve core can be started in both directions in the forward and reverse directions. It is convenient for users to achieve the desired load firepower by rotating the knob once, which improves the user's cooking experience.

[0052] In the embodiments of the present invention, the term "plurality" refers to two or more than two, unless otherwise clearly defined. The terms "installation", "connection", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0053] In the description of the embodiments of the present invention, it needs to be understood that the directions or positional relationships indicated by the terms "upper" and "lower" are 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 orientation. Therefore, it cannot be understood as a limitation on the embodiments of the present invention.

[0054] In the description of this specification, the description of the terms "one embodiment", "a preferred embodiment", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0055] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A valve core, characterized in that: The invention comprises a valve core body (2), wherein a first air inlet hole group (21) for air intake when the valve core body (2) is positively started is provided on a side wall of the valve core body (2), wherein the first air inlet hole group (21) comprises a plurality of first air inlet holes (211) distributed along the circumference of the valve core body (2), and the central axes of two adjacent first air inlet holes (211) are arranged in an offset manner up and down.

2. The valve core according to claim 1, characterized in that: As the forward angle of the valve core body (2) increases, the apertures of the plurality of first air inlet holes (211) tend to first increase and then decrease.

3. The valve core according to claim 1, characterized in that: The valve core body (2) has a valve core cavity (10), at least one of the plurality of first air inlet holes (211) is a blind hole, and the other first air inlet holes (211) are through holes, each of the blind holes is provided with a through hole (222) on its wall, and each of the blind holes is connected to the through hole closest to it through the through hole (222), so that the gas enters the valve core cavity (10) through the through hole (222) and the through hole connected thereto.

4. The valve core according to claim 3, characterized in that: There are a plurality of air holes (222), and the apertures of the plurality of air holes (222) decrease as the rotation angle increases.

5. The valve core according to claim 3, characterized in that: There are a plurality of air holes (222), the central axes of the plurality of air holes (222) are not coplanar, and the air outlet end of each air hole (222) partially overlaps with the air inlet end of the adjacent air hole (222).

6. The valve core according to any one of claims 1 to 5, characterized in that: It also includes a second air inlet hole group (22) for air intake when the valve core body (2) is started in reverse, the second air inlet hole group (22) includes a plurality of second air inlet holes (221) distributed along the circumference of the valve core body (2), and the apertures of the plurality of second air inlet holes (221) decrease as the positive rotation angle of the valve core body (2) increases.

7. The valve core according to claim 6, characterized in that: The central axes of adjacent second air inlet holes (221) are arranged in an offset manner up and down.

8. The valve core according to claim 6, characterized in that: The valve core body (2) also includes A first air outlet hole group (23) is arranged on the side wall of the valve core body (2), comprising a plurality of first air outlet holes (231) arranged circumferentially along the side wall of the valve core body (2); The second air outlet (24) is arranged on the bottom wall of the valve core body (2). Wherein, the plurality of first air outlet holes (231) and the second air outlet holes (24) are connected to the first air inlet hole group (21) and the second air inlet hole group (22) through the valve core cavity (10).

9. The valve core according to claim 8, characterized in that: The apertures of the plurality of first air outlet holes (231) tend to first increase and then decrease as the positive rotation angle of the valve core body (2) increases.

10. The valve core according to claim 8, characterized in that: The number of the first air inlet holes (211) is greater than the number of the first air outlet holes (231).

11. A plug valve, characterized in that: include: The valve core as described in claims 8-10; A valve body (1) having an air inlet pipe (11), a first air outlet pipe (12) and a second air outlet pipe (13); Wherein, the first air outlet hole group (23) and the second air outlet hole (24) are always connected to the second air outlet pipe (13); When the valve core rotates in the reverse direction, the air inlet pipe (11), the first air inlet hole group (21), the first air outlet hole group (23) and the second air outlet hole (24) are connected, and the first air outlet hole group (23) is connected to or disconnected from the first air outlet pipe (12); when the valve core rotates in the forward direction, the air inlet pipe (11), the second air inlet hole group (22), the second air outlet hole (24) and the second air outlet pipe (13) are connected in sequence.

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