Plug valve and infrared gas stove

Abstract

The utility model discloses a plug valve and an infrared gas stove. The plug valve comprises a valve seat, a valve cavity is formed in the valve seat, and a first air inlet hole, a first inner ring air outlet hole and a first outer ring air outlet hole which are communicated with the valve cavity and the exterior of the valve seat are formed in the valve seat. The valve element is arranged in the valve cavity, a ventilation cavity is formed in the valve element, and a second air inlet hole, a second inner ring air outlet hole and a second outer ring air outlet hole are formed in the inner wall of the ventilation cavity; the upper portion of the valve rod extends out of the valve seat and is in sliding connection with the valve seat, the lower portion of the valve rod is in sliding connection with the valve element, the valve rod can slide between a first position and a second position in the vertical direction relative to the valve element and the valve seat at the same time, and a groove position structure arranged in the vertical direction is arranged at the connecting position of the lower portion of the valve rod and the valve element. The valve rod can slide in the vertical direction along the groove position structure and drives the valve element to rotate in the horizontal direction through the groove position structure. The plug is arranged at the lower end of the valve rod, and when the valve rod is located at the first position, the plug blocks part of or all the second outer ring air outlet holes.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to a cock valve and an infrared gas stove. Background Art

[0002] At present, the combustion area of the infrared energy-gathering combustion plate of the infrared gas stove on the market is much larger than that of the ordinary atmospheric gas stove. Therefore, the flame transmission distance of the infrared burner is also longer than that of the atmospheric burner. So when the infrared gas stove performs hot ignition operation, since the ignition point is in the inner ring and there is a considerable distance from the outer ring, when the flame is transmitted to the outer ring along with the ignition point, it takes about 0.5 s. During this time, due to the simultaneous supply of gas to the inner ring and the outer ring, when the inner ring meets the combustion conditions and then after 0.5 s when the flame is transmitted to the outer ring, the gas concentration in the outer ring has been in an excessive state, resulting in deflagration of the outer ring fire.

[0003] Therefore, there is an urgent need for a cock valve to solve the above problems. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the problems existing in the related art to some extent. For this purpose, the utility model provides a cock valve, which can prevent deflagration of the outer ring fire of the infrared burner.

[0005] The above object is achieved by the following technical solutions:

[0006] A cock valve, comprising:

[0007] A valve seat, in which a valve cavity is provided. The valve seat is provided with a first air inlet hole, a first inner ring air outlet hole and a first outer ring air outlet hole that communicate the valve cavity with the outside of the valve seat;

[0008] A valve core, which is arranged in the valve cavity. An air passage cavity is arranged in the valve core. Second air inlet holes, second inner ring air outlet holes and second outer ring air outlet holes are arranged on the inner wall of the air passage cavity. The second air inlet hole communicates with the first air inlet hole to form an air inlet passage. The second inner ring air outlet hole corresponds to the first inner ring air outlet hole to form an inner ring air outlet passage. The second outer ring air outlet hole corresponds to the first outer ring air outlet hole to form an outer ring air outlet passage;

[0009] A valve rod, the upper part of which extends out of the valve seat and is slidably connected with the valve seat. The lower part of the valve rod is slidably connected with the valve core. The valve rod can simultaneously slide between a first position and a second position in the vertical direction relative to the valve core and the valve seat. A slot structure is arranged at the connection between the lower part of the valve rod and the valve core in the vertical direction. The valve rod can slide in the vertical direction along the slot structure and drive the valve core to rotate in the horizontal direction through the slot structure;

[0010] A plug is provided at the lower end of the valve stem and is located within the ventilation cavity. When the valve stem is in the first position, the plug blocks some or all of the second outer ring air outlets. When the valve stem is in the second position, the plug opens the second outer ring air outlets.

[0011] Optionally, the valve stem and the plug are integrally formed.

[0012] Optionally, the second inner ring air outlet is formed at the bottom of the ventilation cavity, and the first inner ring air outlet is formed at the lower part of the valve seat and is located below the second inner ring air outlet.

[0013] Optionally, a sealing ring is further included. The sealing ring is sleeved on the outside of the plug and abuts against the inner wall of the ventilation cavity. The sealing ring is located above the second outer ring air outlet, and the sealing ring is used to seal the gap between the ventilation cavity and the plug.

[0014] Optionally, it further includes:

[0015] An air intake part, which is provided on the outside of the valve seat and is communicated with the air intake channel;

[0016] An inner ring air outlet part, which is provided on the outside of the valve seat and is communicated with the inner ring air outlet channel;

[0017] An outer ring air outlet part, which is provided on the outside of the valve seat and is communicated with the outer ring air outlet channel.

[0018] Optionally, a stir-fry solenoid valve is installed on the outer ring air outlet part.

[0019] Optionally, the solenoid valve includes a valve body part and a connecting part that are connected to each other. The connecting part is provided at the front of the valve body part and is connected to the outer ring air outlet part.

[0020] Optionally, it further includes:

[0021] An inner ring nozzle, which is provided at one end of the inner ring air outlet part away from the valve seat;

[0022] An outer ring nozzle, which is provided at one end of the outer ring air outlet part away from the valve seat.

[0023] On the other hand, the present utility model provides an infrared gas stove, which includes a burner and the above-mentioned cock. The burner includes an outer ring fire structure and an inner ring fire structure. The outer ring fire structure is communicated with the outer ring air outlet channel, and the inner ring fire structure is communicated with the inner ring air outlet channel.

[0024] Compared with the prior art, the present utility model has at least the following beneficial effects:

[0025] The cock valve provided by the present utility model is provided with a plug corresponding to the second outer ring air outlet at the lower end of the original valve stem of the existing cock valve. When the valve stem is pressed down by the user to the first position to perform the ignition operation, the plug can move downward to the second outer ring air outlet to partially block the second outer ring air outlet, thereby reducing the gas discharged from the ventilation cavity to the outer ring fire gas passage of the burner during ignition, or the plug can move downward to the second outer ring air outlet to completely block the second outer ring air outlet, so that no gas can be discharged from the ventilation cavity to the outer ring fire gas passage during ignition, preventing the outer ring fire from deflagrating. When the valve stem is released and the ignition is successful, the gas in the ventilation cavity will be delivered to the outer ring fire gas passage in a preset amount to achieve normal combustion. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a three-dimensional structural schematic diagram of the cock valve provided by a specific embodiment of the present utility model;

[0027] Figure 2 is a sectional structural schematic diagram of the cock valve provided by a specific embodiment of the present utility model (when the valve stem is in the second position);

[0028] Figure 3 is a sectional structural schematic diagram of the cock valve provided by a specific embodiment of the present utility model (when the valve stem is in the first position).

[0029] In the figure:

[0030] 111, valve seat; 112, valve core; 12, valve stem; 13, air inlet part; 14, inner ring air outlet part; 141, inner ring nozzle; 15, outer ring air outlet part; 151, outer ring nozzle; 161, plug; 160, ventilation cavity; 17, sealing ring; 1011, second inner ring air outlet; 1012, first inner ring air outlet; 1021, second outer ring air outlet; 1022, first outer ring air outlet;

[0031] 2, stir-fry solenoid valve; 21, valve body part; 22, connecting part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The following embodiments are used to illustrate the present utility model, but the present utility model is not limited by these embodiments. Modifying the specific implementation manner of the present utility model or equivalently replacing some technical features without departing from the spirit of the present utility model scheme shall all be covered within the scope of the technical solution claimed by the present utility model.

[0033] Please refer to Figures 1 - 3, the present utility model provides a plug valve, which includes a valve seat 111, a valve core 112, a valve rod 12 and a plug 161. A valve cavity is provided inside the valve seat 111, and a first air inlet hole, a first inner ring air outlet hole 1012 and a first outer ring air outlet hole 1022 are formed on the valve seat 111 and communicate the valve cavity with the outside of the valve seat 111. The valve core 112 is arranged inside the valve cavity, and an air vent cavity 160 is arranged inside the valve core 112. A second air inlet hole, a second inner ring air outlet hole 1011 and a second outer ring air outlet hole 1021 are formed on the inner wall of the air vent cavity 160. The second air inlet hole communicates with the first air inlet hole to form an air inlet passage. The second inner ring air outlet hole 1011 corresponds to the first inner ring air outlet hole 1012 to form an inner ring air outlet passage. The second outer ring air outlet hole 1021 corresponds to the first outer ring air outlet hole 1022 to form an outer ring air outlet passage. The upper part of the valve rod 12 extends out of the valve seat 111 and is slidably connected with the valve seat 111. The lower part of the valve rod 12 is slidably connected with the valve core 112. The valve rod 12 can slide between a first position and a second position in the vertical direction relative to the valve core 112 and the valve seat 111 at the same time. A slot structure is arranged at the connection between the lower part of the valve rod 12 and the valve core 112 in the vertical direction. The valve rod 12 can slide in the vertical direction along the slot structure and drive the valve core 112 to rotate in the horizontal direction through the slot structure, so that the valve core 112 can rotate with the rotation of the valve rod 12, thereby adjusting the size of the inner ring air outlet passage and / or the outer ring air outlet passage, and thus realizing the control of the amount of gas of the inner ring fire and / or the outer ring fire. When the valve rod 12 is in the second position, the valve rod 12 is separated from the valve core 112. The plug 161 is arranged at the lower end of the valve rod 12 and is located inside the air vent cavity 160. When the valve rod 12 is in the first position, the plug 161 blocks part or all of the second outer ring air outlet holes 1021. When the valve rod 12 is in the second position, the plug 161 opens the second outer ring air outlet holes 1021.

[0034] The plug valve provided by the present utility model is provided with a plug 161 corresponding to the second outer ring air outlet hole 1021 at the lower end of the original valve rod 12 of the existing plug valve. When the valve rod 12 is pressed down by the user to the first position to perform the ignition operation, the plug 161 can move downward to the second outer ring air outlet hole 1021 to partially block the second outer ring air outlet hole 1021, thereby reducing the gas discharged from the air vent cavity 160 to the outer ring fire gas passage of the burner during the ignition process, or the plug 161 can move downward to the second outer ring air outlet hole 1021 to completely block the second outer ring air outlet hole 1021, so that no gas can be discharged from the air vent cavity 160 to the outer ring fire gas passage during the ignition process, and the outer ring fire will not explode. When the valve rod 12 is released and the ignition is successful, the gas in the air vent cavity 160 will be delivered to the outer ring fire gas passage in a preset amount to realize normal combustion.

[0035] Specifically, the slot structure includes a sliding groove and a sliding block. The sliding groove is arranged vertically on one of the valve stem 12 and the valve core 112, and the sliding block is arranged on the other of the valve stem 12 and the valve core 112. The sliding block extends into the sliding groove and can slide along the sliding groove.

[0036] Optionally, the valve stem 12 and the plug 161 are integrally formed, which is convenient for the preparation of the structure and improves the strength of the structure, and the structure is simpler and conducive to installation.

[0037] Optionally, the second inner ring air outlet 1011 is opened at the bottom of the ventilation cavity 160, and the first inner ring air outlet 1012 is opened at the lower part of the valve seat 111 and is located below the second inner ring air outlet 1011. The valve core 112 does not block the first inner ring air outlet 1012, so that the firepower of the inner ring fire only has one gear.

[0038] Optionally, the second air inlet holes are all arranged lower than the second outer ring air outlet holes, so that when the plug slides relative to the ventilation cavity from top to bottom, only the second outer ring air outlet holes will be blocked, and the second air inlet holes will not be blocked, affecting the air intake of the air intake passage.

[0039] Optionally, it further includes a sealing ring 17. The sealing ring 17 is sleeved on the outside of the plug 161 and abuts against the inner wall of the ventilation cavity 160. The sealing ring 17 is located above the second outer ring air outlet 1021. The sealing ring 17 is used to seal the gap between the ventilation cavity 160 and the plug 161 to prevent gas from flowing out of the ventilation cavity 160 through the gap between the ventilation cavity 160 and the plug 161.

[0040] Optionally, it further includes an air intake part 13, an inner ring air outlet part 14 and an outer ring air outlet part 15. The air intake part 13 is arranged on the outside of the valve seat 111 and is communicated with the air intake passage. The plug valve is communicated with the air supply pipeline outside the plug valve through the air intake part 13. The inner ring air outlet part 14 is arranged on the outside of the valve seat 111 and is communicated with the inner ring air outlet passage to supply gas for the inner ring fire. The outer ring air outlet part 15 is arranged on the outside of the valve seat 111 and is communicated with the outer ring air outlet passage to supply gas for the outer ring fire.

[0041] Optionally, a stir-fry solenoid valve 2 is installed on the outer ring air outlet part 15. By setting the stir-fry solenoid valve 2, when the user turns on the stir-fry function, the stir-fry solenoid valve 2 opens, thereby increasing the gas volume of the outer ring fire, improving the combustion intensity, and realizing the stir-fry effect.

[0042] Optionally, the solenoid valve includes a valve body part 21 and a connecting part 22 which are connected to each other. The connecting part 22 is arranged at the front part of the valve body part 21 and is connected to the outer ring air outlet part 15. In this way, the valve body part 21 is arranged on the side close to the plug valve, reducing the high-temperature influence of the burner on the solenoid valve and being beneficial to ensuring the service life of the solenoid valve.

[0043] Optionally, it further includes an inner ring nozzle 141 and an outer ring nozzle 151. The inner ring nozzle 141 is arranged at one end of the inner ring air outlet part 14 away from the valve seat 111. The outer ring nozzle 151 is arranged at one end of the outer ring air outlet part 15 away from the valve seat 111.

[0044] Optionally, it further includes an elastic reset structure and a limit structure. The elastic reset structure is installed between the valve stem 12 and the valve seat 111 or the valve core 112. The valve stem 12 can be reset from the first position to the second position under the elastic force of the elastic reset structure. The limit structure is arranged between the valve stem 12 and the valve seat 111 or the valve core 112. The limit structure is used to limit the sliding range of the valve stem 12 relative to the valve seat 111. The elastic reset structure and the limit structure are both prior arts and will not be elaborated here.

[0045] On the other hand, the present utility model provides an infrared gas stove, which includes a burner and the above-mentioned cock. The burner includes an outer ring fire structure and an inner ring fire structure. The outer ring fire structure is communicated with the outer ring air outlet channel, and the inner ring fire structure is communicated with the inner ring air outlet channel.

[0046] The above are only some embodiments of the present utility model. For those of ordinary skill in the art, without departing from the creative concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model.

Claims

1. A plug valve, characterized in that: include: A valve seat (111) having a valve cavity disposed therein, the valve seat (111) being provided with a first air inlet hole, a first inner ring air outlet hole (1012) and a first outer ring air outlet hole (1022) communicating with the valve cavity and the outside of the valve seat (111); A valve core (112) is arranged in the valve cavity, and a ventilation cavity (160) is arranged in the valve core (112). A second air inlet hole, a second inner ring air outlet hole (1011) and a second outer ring air outlet hole (1021) are opened on the inner wall of the ventilation cavity (160). The second air inlet hole is connected with the first air inlet hole to form an air inlet channel, the second inner ring air outlet hole (1011) and the first inner ring air outlet hole (1012) correspond to form an inner ring air outlet channel, and the second outer ring air outlet hole (1021) and the first outer ring air outlet hole (1022) correspond to form an outer ring air outlet channel; A valve stem (12), the upper portion of which extends out of the valve seat (111) and is slidably connected to the valve seat (111), the lower portion of the valve stem (12) is slidably connected to the valve core (112), the valve stem (12) can simultaneously slide relative to the valve core (112) and the valve seat (111) in a vertical direction between a first position and a second position, a groove structure arranged in a vertical direction is provided at a connection between the lower portion of the valve stem (12) and the valve core (112), the valve stem (12) can slide in a vertical direction along the groove structure and drive the valve core (112) to rotate in a horizontal direction through the groove structure; A plug (161) is arranged at the lower end of the valve stem (12) and is located in the ventilation cavity (160). When the valve stem (12) is in the first position, the plug (161) blocks part or all of the second outer ring air outlet holes (1021). When the valve stem (12) is in the second position, the plug (161) opens the second outer ring air outlet holes (1021).

2. The plug valve according to claim 1, characterized in that: The valve stem (12) and the plug (161) are integrally formed.

3. The plug valve according to claim 1, characterized in that: The second inner ring air outlet hole (1011) is opened at the bottom of the ventilation cavity (160), and the first inner ring air outlet hole (1012) is opened at the lower part of the valve seat (111) and is located below the second inner ring air outlet hole (1011).

4. The plug valve according to claim 1, characterized in that: It also includes a sealing ring (17), which is sleeved on the outer side of the plug (161) and abuts against the inner wall of the ventilation cavity (160), and the sealing ring (17) is located above the second outer ring air outlet (1021). The sealing ring (17) is used to seal the gap between the ventilation cavity (160) and the plug (161).

5. The plug valve according to any one of claims 1 to 4, characterized in that: Also includes: An air intake portion (13) is arranged outside the valve seat (111) and communicated with the air intake passage; An inner ring air outlet portion (14) is arranged outside the valve seat (111) and communicates with the inner ring air outlet channel; The outer ring air outlet portion (15) is arranged outside the valve seat (111) and is in communication with the outer ring air outlet channel.

6. The plug valve according to claim 5, characterized in that: A stir-fry solenoid valve (2) is installed on the outer ring air outlet portion (15).

7. The plug valve according to claim 6, characterized in that The solenoid valve (2) comprises a valve body portion (21) and a connecting portion (22) which are connected to each other. The connecting portion (22) is arranged at the front portion of the valve body portion (21) and is connected to the outer ring air outlet portion (15).

8. The plug valve according to claim 5, characterized in that: Also includes: An inner ring nozzle (141) is arranged at an end of the inner ring air outlet portion (14) away from the valve seat (111); The outer ring nozzle (151) is arranged at an end of the outer ring air outlet portion (15) away from the valve seat (111).

9. An infrared gas stove, characterized in that: It comprises a burner and the plug valve according to any one of claims 1 to 8, wherein the burner comprises an outer ring fire structure and an inner ring fire structure, the outer ring fire structure is connected to the outer ring air outlet channel, and the inner ring fire structure is connected to the inner ring air outlet channel.

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