Valve element and plug valve with same

Abstract

The utility model 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. An air inlet path is added, in the gear shifting process, the flow speed change can be slowed down, the air inlet flow speed can be stabilized, and stable combustion is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas -cooker technical field especially a valve core and the plug valve with it. BACKGROUND

[0002] In domestic gas stove, plug valve is usually used for controlling the opening and closing of the stove, gas on-off, fire size adjustment and the like. As an important component of plug valve, valve core can control the flow of gas, so as to achieve the purpose of adjusting the fire. However, with the change of valve core from stepless adjustment to precision control, the fire of each gear also changes from continuous change to discontinuous change. That is, during the gear switching process, the fire is affected by the size of the front and rear hole diameters. With the sudden decrease of the hole diameter, the instantaneous gas flow rate increases, that is, the instantaneous time difference between gears leads to obvious change of fire, causing unstable flame transmission, easy to off flame or instantaneous deflagration, affecting user experience. SUMMARY

[0003] The first technical problem to be solved by the utility model is to provide a valve core that can increase the air inlet path, slow down the flow rate change, stabilize the air inlet flow rate and realize stable combustion during gear conversion.

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

[0005] The technical scheme adopted by the utility model to solve the above-mentioned first technical problem is: a valve core, the valve core comprises a valve core body, a first air inlet hole group for air inlet when the valve core body is started in a forward direction is arranged on the side wall of the valve core body, the first air inlet hole group comprises a plurality of first air inlet holes distributed in the circumferential direction of the valve core body, and the central axes of adjacent two first air inlet holes are arranged in up-down staggered mode.

[0006] According to an embodiment of the utility model, with the increase of the forward angle of the valve core body, the hole diameters of the plurality of first air inlet holes all show the trend of first increasing and then decreasing.

[0007] According to an embodiment of the utility model, the valve core body has a valve core cavity, at least one of the plurality of first air inlet holes is a blind hole, and the rest of the first air inlet holes are through holes, a gas passing hole is arranged on the hole wall of each blind hole, and each blind hole is communicated with the nearest through hole through the gas passing hole, so that the gas enters the valve core cavity through the gas passing hole and the through hole communicated therewith.

[0008] According to an embodiment of the utility model, the gas passing hole is a plurality of gas passing holes, and the hole diameters of the plurality of gas passing holes decrease with the increase of the rotation angle.

[0009] According to one embodiment of the present invention, there are multiple air passages, the central axes of the multiple air passages are not coplanar, and the air outlet end of each air passage and the air inlet end of the adjacent air passage partially overlap.

[0010] According to one embodiment of the present invention, the valve core further 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 inlets distributed circumferentially along the valve core body. The diameter of the plurality of second air inlets decreases as the forward rotation angle of the valve core body increases.

[0011] According to one embodiment of the present invention, the central axes of adjacent second air inlets are staggered vertically.

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

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

[0014] The second vent is located on the bottom wall of the valve core body.

[0015] The first air outlet and the second air outlet are connected to the first air inlet group and the second air inlet group through the valve core cavity.

[0016] According to one embodiment of the present invention, the diameter of the plurality of first air outlet holes first increases and then decreases as the forward rotation angle of the valve core body increases.

[0017] According to one embodiment of the present invention, the number of the first air inlets is greater than the number of the first air outlets.

[0018] The technical solution adopted by this utility model to solve the second technical problem mentioned above is: a plug valve, the plug valve comprising:

[0019] Valve core as described in any of the preceding items;

[0020] The valve body has an inlet pipe, a first outlet pipe, and a second outlet pipe;

[0021] 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 to or disconnected from 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 utility model has the advantages or beneficial effects as follows:

[0024] The utility model discloses a plurality of first air inlet holes are arranged axially in the side wall of the valve core body upside down, so that in the process of gear conversion, the air inlet path can be increased, the flow rate change is slowed down, the stable air inlet flow rate is realized, and stable combustion is realized on the cooker.

[0025] The plug valve can be started in the positive direction and the reverse direction, the user can directly start the cooker with small fire, the process of turning to large fire and then adjusting to small fire in the prior art is avoided, the user can achieve the desired load fire by rotating the knob once, and the cooking experience of the user is improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] The above and other features and advantages of the present utility model will become more apparent by describing in detail example embodiments thereof with reference to the attached drawings.

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

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

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

[0030] Figure 4 is Figure 3 is a sectional view in the AA direction.

[0031] Figure 5 is Figure 3 is a sectional view in the BB direction.

[0032] Figure 6 is a schematic view of the relative position of a valve core and a gear according to an example embodiment.

[0033] Figure 7 is a schematic view of a plug valve according to an example embodiment.

[0034] Figure 8 is an exploded view of a plug valve according to an example embodiment. BRIEF DESCRIPTION OF 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 group; 211. First air inlet; 212. Air outlet; 22. Second air inlet group; 221. Second air inlet; 23. First air outlet group; 231. First air outlet; 24. Second air outlet. Detailed Implementation

[0038] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many 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 thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0039] The terms “a,” “one,” “the,” and “” are used to indicate the existence of one or more elements / components / etc.; the terms “include” and “have” are used to indicate an open-ended meaning of inclusion and that there may be other elements / components / etc. in addition to the listed elements / components / etc.

[0040] This utility model embodiment provides a valve core, such as Figures 1-6 As shown, the valve core includes a valve core body 2. The side wall of the valve core body 2 has a first air inlet hole group 21 for air intake when the valve core body 2 rotates in the reverse direction. The first air inlet hole group 21 includes a plurality of first air inlets 211 distributed circumferentially along the valve core body 2, with the central axes of adjacent first air inlets 211 staggered vertically. In this embodiment, as... Figures 1-3 The multiple first air inlets 211 shown are staggered vertically along the side wall of the valve core body 2. This increases the air intake path and slows down the flow rate change during gear shifting (i.e., when the air inlet diameter decreases or increases), achieving a stable air intake speed and ensuring stable combustion in the stove. Forward start refers to the valve core 2 being in the forward position... Figure 6 The OFF position is indicated and the valve stem 3 rotates counterclockwise to achieve ignition. After ignition, the desired level can be selected for cooking. The first air inlet group 21 in this application can provide the user with a range of firepower from high to low. When the user needs to stir-fry or cook over medium heat, they can choose to start the stove in the forward direction.

[0041] In a preferred embodiment of this utility model, such as Figures 1-6 As shown, as the positive angle of the valve core body 2 increases, the diameters of the multiple first air inlets 211 all show a trend of first increasing and then decreasing. For example... Figures 1-6The fire power fine control conditions of forward five gears and reverse three gears are illustrated, wherein the fire power of the plurality of first air inlet holes 211 is first increased and then decreased, the forward first gear is a specific fire power adjustment point and is not the maximum fire, and is usually set as a commonly used non-large fire cooking mode, the design can match the medium temperature cooking mode by setting the hole diameter size, the forward second gear is the maximum load position, that is, a commonly used explosive stir-frying mode, the forward third gear has double-ring fire power reduction relative to the forward second gear, so as to realize fire power reduction control, the forward fourth gear has double-ring fire power reduction again relative to the forward third gear, so as to realize fire power reduction control, and the forward fifth gear only has inner-ring outlet gas, that is, the minimum fire load; the design can meet the problem that the user avoids excessive angle rotation after high fire cooking, and improves the cooking experience of the user. Of course, the number of forward gears can also be 3, 4, 5, 6, 7, 8, 9 or 10 or even more, and the design can be made according to the needs of the user, which is not limited in the application.

[0042] In one preferred embodiment of the present application, as shown in Figures 1-6 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 remaining first air inlet holes 211 are through holes, a gas passing hole 222 is formed in the hole wall of each blind hole, and each blind hole is communicated with the nearest through hole through the gas passing hole 222, so that the gas delivered by the gas inlet pipe 11 enters the valve core cavity 10 through the gas passing hole 222 and the through hole communicated therewith. With the forward rotation of the valve core 2, the outlet hole diameter of the first air inlet hole 211 is first increased and then decreased, and especially when the outlet hole diameter is small, instantaneous fire power change will occur in the interval between the gears. At this time, part of the first air inlet hole 211 can be designed as a blind hole, and the gas passing hole 212 is used to ensure that the air inlet amount gradually decreases during gear switching, so that the conversion process is smooth, and the instantaneous fire power change in the interval between the gears will not occur. For example Figures 5-6 The forward second gear is a large fire position, the forward first gear, the forward second gear and the forward third gear are through holes and the corresponding hole diameters are first increased and then decreased, the forward fourth gear and the forward fifth gear are blind holes, and the gas passing hole 212 is arranged between the forward fourth gear and the forward fifth gear to switch gears, and the gas passing hole 212 is designed between the forward fourth gear and the forward third gear. When the forward third gear is switched to the forward fourth gear, the fire power needs to be gradually reduced. If there is no gas passing hole 212, the gas flow will first become very small, then become large, and then become small, and the fire power will also have instantaneous fire power change, which affects the user experience. The gas passing hole 212 can realize the conversion of the hole diameters between the gears and the smooth conversion of the fire power.

[0043] In one preferred embodiment of the present application, as shown in Figures 1-6As shown, there are multiple vent holes 222, and the diameter of each vent hole 222 decreases as the rotation angle increases. For some applications requiring precise gear shifting within a very small range, when the diameter of the first air inlet 211 decreases, multiple blind holes and vent holes 212 need to be designed, such as in the attached diagram. Figures 1-6 The illustration shows a scenario where forward gear 1, forward gear 2, and forward gear 3 are all through holes with corresponding hole diameters that first increase and then decrease, while forward gear 4 and forward gear 5 are blind holes. As the firepower gradually decreases, the diameter of the air passage 212 also gradually decreases, thus achieving the switching from forward gear 4 to forward gear 5 with reduced firepower.

[0044] In a preferred embodiment of this utility model, such as Figures 1-6 As shown, there are multiple air passages 222, and the central axes of the multiple air passages 222 are not coplanar. Moreover, the air outlet end of each air passage 222 and the air inlet end of its adjacent air passage 222 partially overlap. That is, there is a certain misalignment between two adjacent air passages to prevent the airflow from suddenly increasing or decreasing. The misalignment between the two air passages is used to buffer changes in airflow.

[0045] In a preferred embodiment of this utility model, such as Figures 1-6 As shown, the valve core also includes a second air inlet group 22 for air intake during reverse start-up of the valve core body 2. The second air inlet group 22 includes a plurality of second air inlets 221 distributed circumferentially along the valve core body 2. The diameter of the plurality of second air inlets 221 decreases as the forward rotation angle of the valve core body 2 increases. In this embodiment, reverse start-up refers to the valve core 2 rotating from a position such as... Figure 6 The OFF position is indicated by rotating the valve stem 3 clockwise to ignite the flame. After ignition, cooking can be performed at one of the reverse positions 1-3. As the reverse rotation angle of the valve core 2 increases, the diameter of the multiple second air inlets 221 gradually decreases. These multiple second air inlets 221 cooperate with the second air outlet 24 to form a second heat adjustment channel for supplying gas only to the second air outlet pipe 13. In this application, all the multiple second air inlets 221 correspond to low heat, and the heat decreases as the reverse rotation angle increases. This means that reverse activation only sets the heat to low, allowing users to directly start low heat by simply reversing the direction, eliminating the need to first switch to high heat and then adjust to low heat, thus improving the user's cooking experience.

[0046] Preferably, in some designs, the smaller portion of the second air inlet 221 is designed as a blind hole, and air passages are designed on the wall of the blind hole. Alternatively, additional...

[0047] This utility model embodiment provides a valve core, such as Figures 1-6As shown, the central axes of the adjacent second air inlet holes 221 are arranged in up-down staggered manner. The plurality of second air inlet holes 221 are arranged in up-down staggered manner along the side wall of the valve core body 2 in the axial direction, so that in the process of switching the gear, that is, the air inlet hole diameter is reduced or increased, the air inlet path is increased, the flow rate change is slowed down, the stable air inlet flow rate is realized, and stable combustion is realized on the stove.

[0048] The utility model embodiment provides a valve core, such as Figures 1-6 As shown, the valve core body 2 further includes a first air outlet hole group 23 and a second air outlet hole 24. The first air outlet hole group 23 is arranged on the side wall of the valve core body 2 and includes a plurality of first air outlet holes 231 arranged in a circumferential direction along the side wall of the valve core body 2. The second air outlet hole 24 is arranged on the bottom wall of the valve core body 2. The plurality of first air outlet holes 231 and the second air outlet hole 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. Preferably, when the valve core is started in a forward direction, the air inlet pipe 11 of the valve body 1 is connected to the first air inlet hole group 21, and the gas in the first air inlet hole group 21 can be output through the first air outlet hole group 23 and the second air outlet hole 24 or the second air outlet hole 24. When the valve core is started in a reverse direction, the air inlet pipe 11 of the valve body 1 is connected to the second air inlet hole group 22 and the second air outlet hole 24, and as the clockwise rotation angle of the valve core increases, the gas flow rate of the second firepower adjustment channel gradually decreases. In this way, the user can directly start the stove to ignite by starting in a reverse direction, and the stove is directly started to a small fire, which saves the process of first switching to a large fire and then adjusting to a small fire, and improves the user's cooking experience.

[0049] In a preferred embodiment of the utility model, as shown in the drawings, Figures 1-6 The hole diameters of the plurality of first air outlet holes 231 increase first and then decrease with the increase of the forward rotation angle of the valve core body 2. The forward rotation angle of the embodiment refers to the angle of rotation of the valve core 2 from the 0-degree position to the corresponding forward gear, that is, the hole diameters of the plurality of first air outlet holes 231 and the hole diameters of the plurality of first air inlet holes 211 change in the same way, that is, they first increase and then decrease. In this way, the gas inlet and outlet hole diameter law remains consistent, which can ensure accurate control of firepower, improve the user's use experience, and realize precise control of firepower.

[0050] In a preferred embodiment of the utility model, as shown in the drawings, Figures 1-6 The number of first air inlet holes 211 is greater than the number of first air outlet holes 231. Since the firepower of the first firepower adjustment channel first increases and then decreases, when the firepower is small, only the inner ring fire of the second air outlet pipe 13 is needed, therefore, at this time, the first air outlet pipe 12 needs to be disconnected, therefore, the number of first air outlet holes 231 is less than the number of 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 conversion is convenient.

[0051] The utility model discloses an embodiment provides a plug valve, such as Figures 7-8 The plug valve shown in the figure comprises the valve core and the valve body 1, the valve body 1 has the valve body cavity 10 and the air inlet pipe 11, the first air outlet pipe 12 and the second air outlet pipe 13 that communicate the valve body cavity 10, wherein the first air outlet hole group 23, the second air outlet hole 24 are always communicated with the second air outlet pipe 13, when the valve core reversely rotates, 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 communicated, the first air outlet hole group 23 is communicated or disconnected with the first air outlet pipe 12, when the valve core positively rotates, 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 communicated in turn, the hole diameter of the first air inlet hole group 21 meets the demand in the range from big fire to small fire of the cooker, the second air inlet hole group 22 is small fire of the cooker, so that the user only needs to select when cooking, for example, when needing small fire, only needs to drive the valve rod 3 to drive the valve core 2 to rotate clockwise to start reversely, the user can directly start the cooker with small fire, and the process of first rotating to big fire and then adjusting to small fire is not needed, and if needing medium fire or big fire, only needs to drive the valve rod 3 to drive the valve core 2 to rotate counterclockwise, the valve core can be started in the positive and negative direction, and the process is convenient, the user can achieve the desired load fire by rotating the knob once, and the cooking experience of the user is improved.

[0052] In the embodiments of the present application, the term "a plurality of" refers to two or more, unless otherwise explicitly limited. The terms "mounting", "connecting", "fixing" and the like should be understood in a broad sense, for example, "connecting" can be fixed connection, can also be detachable connection, or integral connection. For ordinary skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0053] In the description of the embodiments of the present application, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as a limitation on the embodiments of the present application. The device or unit indicated by the terms "upper", "lower" and the like 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 application.

[0054] In the description of the present application, the description of the terms "one embodiment", "one preferred embodiment" and the like 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 present application. In the present application, the illustrative description 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 merely describes preferred embodiments of the present application, and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A valve core characterized in that, The valve core body (2) includes a side wall, and a first air inlet hole group (21) is arranged on the side wall of the valve core body (2) and used for air inlet when the valve core body (2) is started in a forward direction, the first air inlet hole group (21) includes a plurality of first air inlet holes (211) distributed in a circumferential direction of the valve core body (2), and the central axes of adjacent two first air inlet holes (211) are arranged in an up-down staggered manner.

2. The valve core according to claim 1, characterized in that With an increase of a forward angle of the valve core body (2), the diameters of the plurality of first air inlet holes (211) all have a trend of first increasing and then decreasing.

3. The valve core of claim 1, wherein 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 remaining first air inlet holes (211) are through holes, a gas passing hole (222) is arranged on a hole wall of each blind hole, and each blind hole is communicated with the nearest through hole through the gas passing hole (222), so that the gas enters the valve core cavity (10) through the gas passing hole (222) and the through hole communicated with the gas passing hole (222).

4. The valve core according to claim 3, characterized in that The gas passing hole (222) is a plurality of gas passing holes, and the diameters of the plurality of gas passing holes (222) decrease with an increase of a rotation angle.

5. The valve core of claim 3, wherein The gas passing hole (222) is a plurality of gas passing holes, the central axes of the plurality of gas passing holes (222) are not coplanar, and a gas outlet end of each gas passing hole (222) partially overlaps with a gas inlet end of the gas passing hole (222) adjacent to the gas outlet end.

6. A valve core according to any one of claims 3-5, characterised in that The valve core body (2) further includes a second air inlet hole group (22) used for air inlet when the valve core body (2) is started in a reverse direction, the second air inlet hole group (22) includes a plurality of second air inlet holes (221) distributed in a circumferential direction of the valve core body (2), and the diameters of the plurality of second air inlet holes (221) decrease with an increase of a forward rotation angle of the valve core body (2).

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 up-down staggered manner.

8. The valve core of claim 6, wherein, The valve core body (2) further includes a first air outlet hole group (23) arranged on the side wall of the valve core body (2) and including a plurality of first air outlet holes (231) arranged in a circumferential direction of the side wall of the valve core body (2); a second air outlet hole (24) arranged on a bottom wall of the valve core body (2), wherein the plurality of first air outlet holes (231) and the second air outlet hole (24) communicate 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 of claim 8, wherein, With an increase of a forward rotation angle of the valve core body (2), the diameters of the plurality of first air outlet holes (231) have a trend of first increasing and then decreasing.

10. The valve core of claim 8, wherein, The number of the first air inlet holes (211) is greater than the number of the first air outlet holes (231).

11. A stopcock valve characterised in that, The valve core includes: The valve core according to any one of 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 communicated with the second air outlet pipe (13); When the valve core rotates reversely, 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 communicated, and the first air outlet hole group (23) is communicated with or disconnected from the first air outlet pipe (12); when the valve core rotates forwardly, 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 communicated in sequence.

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