Stage valve and gas stove including the same

Abstract

The present invention discloses a sectional valve and a gas stove including the same, comprising an inner ring gas channel and an outer ring gas channel, the sectional valve further comprising a first channel and a second channel, the first channel and the second channel respectively communicating with the inner ring gas channel and the outer ring gas channel, a communicating hole being formed between the first channel and the second channel, the sectional valve further comprising a first valve, the first valve being arranged corresponding to the communicating hole and being used to open or close the communicating hole. The present invention provides the first channel and the second channel, and connects the first channel and the second channel to form a communicating hole, so that the gas in the inner ring gas channel and the outer ring gas channel can communicate with each other before flowing to the gas stove connected to the sectional valve, and the gas communicates with each other through the communicating hole, thereby ensuring that the gas volume remains consistent when the gas flows out through the inner ring gas channel and the outer ring gas channel. Accordingly, the inner ring fire cover and the outer ring fire cover of the gas stove receive the same amount of gas, and the inner ring fire cover and the outer ring fire cover will produce the same firepower when burning.

Description

Technical Field

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

[0002] With the continuous development of life, more and richer ingredients are entering people's dining tables. The different cooking methods for different ingredients have led to more and more diverse demands for gas stoves by users. These demands are mainly for the gas control needs in gas stoves. For example, in order to ensure that the ingredients are heated evenly, it is usually necessary to control the gas of the gas valve with an inner ring fire cover and an outer ring fire cover, so that different positions of the ingredients are simultaneously exposed to uniform fire during the cooking process and cooking is completed quickly.

[0003] The mechanical valve of the existing gas stove adjusts the amount of gas entering the inner ring gas channel and the outer ring gas channel as the gas knob is turned, making it difficult to achieve the same fire power for the inner ring fire cover and the outer ring fire cover. In addition, the modification of the mechanical valve to achieve the same fire power is also subject to the structural limitations and cost limitations of the mechanical valve. Moreover, the inner ring fire cover and the outer ring fire cover of the modified gas stove will take too long to enter the same fire power, causing the food to burn, thereby affecting the user experience.

[0004] Therefore, a valve body is needed that can save costs and ensure the synchronous fire power of the inner ring fire cover and the outer ring fire cover. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defect in the prior art that the inner ring fire cover and the outer ring fire cover of the gas stove cannot ensure the same fire power, and to provide a stage valve and a gas stove containing the same.

[0006] The present invention solves the above technical problems through the following technical solutions:

[0007] A sectional valve includes an inner ring gas channel and an outer ring gas channel. The sectional valve also includes a first channel and a second channel. The first channel and the second channel are respectively connected to the inner ring gas channel and the outer ring gas channel. A connecting hole is formed between the first channel and the second channel. The sectional valve also includes a first valve. The first valve is arranged corresponding to the connecting hole and is used to open or close the connecting hole.

[0008] In this solution, the first channel and the second channel are connected and a connecting hole is formed. The first valve is used to control the opening or closing of the connecting hole. When the first valve opens the connecting hole, the gas flows through the first channel and the second channel and allows the gas between the inner ring gas channel and the outer ring gas channel to circulate with each other, thereby making the amount of gas flowing through the inner ring gas channel and the outer ring gas channel to the gas stove connected to the stage valve consistent, and the inner ring fire cover and the outer ring fire cover of the gas stove achieve fire power synchronization accordingly, that is, synchronous fire. When the first valve closes the connecting hole, the gas flows separately through the inner ring gas channel and the outer ring gas channel to the inner ring fire cover and the outer ring fire cover of the gas stove. The gas stove adjusts the fire power from small to large according to the user turning the gas knob to meet the user's fire power requirements under normal cooking.

[0009] Preferably, the connection between the first channel and the inner ring gas channel is vertically arranged, and the connection between the second channel and the outer ring gas channel is vertically arranged.

[0010] In this solution, the first channel is arranged vertically to the inner ring gas channel, so that the gas resistance from the inner ring gas channel to the first channel and from the first channel to the inner ring gas channel is roughly the same, so that when the connecting hole is opened, the first channel between the inner ring gas channel and the outer ring gas channel is more uniform when communicating gas with each other, avoiding the situation where the fire power of the inner ring fire cover and the outer ring fire cover are out of sync when the gas flows to the gas stove through the inner ring gas channel. Similarly, the second channel and the outer ring gas channel also adopt this layout to improve the uniformity of the gas flow entering the outer ring fire cover.

[0011] Preferably, the first valve is provided with a moving shaft that reciprocates along the axial direction of the communicating hole, and the end of the moving shaft is used to open or close the communicating hole.

[0012] In this solution, the end cover of the moving shaft is arranged on the communicating hole to achieve sealing of the communicating hole. When the communicating hole needs to be opened, the reciprocating motion of the moving shaft can reduce the occupation of the internal space of the stage valve and improve space utilization.

[0013] Preferably, the first valve is a bistable valve.

[0014] In this solution, the use of a bistable valve can utilize the characteristics of the bistable valve itself that it is magnetically attracted and opens the communicating hole to reduce the power consumption of the sectional valve, thereby reducing the use cost of the sectional valve during use.

[0015] Preferably, the section valve further includes a third channel, the third channel is communicated with the second channel and the first channel respectively, and the housing of the first valve is located in the third channel.

[0016] In this solution, the third channel is used to accommodate the shell of the first valve and the third channel is connected to the first channel and the second channel respectively. When the connecting hole is opened by the moving shaft of the first valve, the gas flows into the third channel through the first channel, and then flows to the second channel through the third channel, so as to realize the gas interconnection between the inner ring gas channel and the outer ring gas channel, and then realize synchronous fire with the gas stove connected to the stage valve.

[0017] Preferably, a sealing member is provided between the valve body and the cover of the section valve, and the sealing member is arranged corresponding to the opening direction of the first channel and / or the second channel.

[0018] In this solution, the seal is used to seal the gap between the valve body and the cover body covering the first channel and the second channel, thereby preventing gas from leaking through the openings of the first channel and / or the second channel, thereby improving the safety of the stage valve.

[0019] Preferably, a sealing member is provided in the third channel, and the sealing member is located between the inner wall of the third channel and the housing of the first valve.

[0020] In this solution, a seal is also provided in the third channel, which is used to seal the gap between the shell of the first valve and the inner wall of the third channel, thereby preventing the gas in the inner ring gas channel and the outer ring gas channel from communicating with each other when the connecting hole is opened, causing gas leakage, thereby improving the safety of the section valve.

[0021] Preferably, the first channel and the inner ring gas channel have the same channel cross-section size;

[0022] and / or,

[0023] The second channel has the same channel cross-section as that of the outer ring gas channel.

[0024] In this solution, the first channel has the same channel cross-section as the inner ring gas channel to ensure that the amount of gas is consistent when the gas flows from the first channel to the inner ring gas channel, or when the gas from the inner ring gas channel flows into the first channel, thereby ensuring that the fire power of the inner ring fire cover and the outer ring fire cover of the gas stove connected to the stage valve are the same. Similarly, the second channel also has the same channel cross-section as the outer ring gas channel, and its purpose is also to make the amount of gas flowing through the second channel and the inner and outer ring gas channels consistent.

[0025] Preferably, the cross-sectional sizes of the first channel, the second channel and the communicating hole are all the same.

[0026] In this solution, the first channel and the connecting hole have the same channel cross-section, and the second channel and the connecting hole have the same channel cross-section, so as to further ensure that the amount of gas is consistent when the gas is communicated between the inner ring gas channel and the outer ring gas channel. Accordingly, the fire power of the inner ring fire cover and the outer ring fire cover of the gas stove connected to the stage valve remains relatively consistent.

[0027] Preferably, the communication position between the first channel and the inner ring gas channel is close to the inlet side of the inner ring gas channel;

[0028] And / or, the communication position between the second channel and the outer ring gas channel is close to the inlet side of the inner ring gas channel.

[0029] In this solution, the first channel and / or the second channel are arranged close to the inlet side of the inner ring gas channel so that the connecting hole is opened before the gas flows out of the inner ring gas channel, and the gas is evenly mixed with the gas in the outer ring gas channel before the gas flows out of the inner ring gas channel, so that the gas volume remains consistent when the gas flows out of the inner ring gas channel and the outer ring gas channel.

[0030] Preferably, the first channel and the second channel are arranged in parallel, the first channel and the second channel have relatively overlapping tube walls, and the communicating hole is opened on the relatively overlapping tube walls.

[0031] In this solution, the first channel and the second channel are arranged in parallel so that the gas resistance encountered by the gas when flowing in the first channel and the second channel remains the same, thereby improving the uniformity of the gas flowing between the inner ring gas channel and the outer ring gas channel.

[0032] A gas stove comprises the above-mentioned stage valve.

[0033] In this solution, the gas stove adopts the above-mentioned stage valve so that the gas stove can ensure the user's normal fire needs while providing an additional cooking mode with synchronized fire power of the inner ring fire cover and the outer ring fire cover, thereby increasing the user's fire adjustment range to improve the user's cooking experience.

[0034] Preferably, the gas stove also includes an inner ring fire cover, an outer ring fire cover and an angle detection mechanism. The angle detection mechanism is arranged corresponding to the gas knob of the stage valve. The angle detection mechanism is electrically connected to the first valve. When the fire hole on the inner ring fire cover is not completely burned, the first valve cannot open the connecting hole.

[0035] In this solution, the fire holes on the inner ring fire cover are not completely burned, that is, the fire power of the inner ring fire cover is in a "medium fire" or "low fire" state. At this time, opening the connecting hole will cause the inner ring fire cover to fail to transfer fire to the outer ring fire cover. When the fire holes on the inner ring fire cover are not completely burned, the first valve cannot open the connecting hole to avoid the above-mentioned fire transfer failure, thereby improving the fire transfer success rate and user experience.

[0036] The positive progressive effect of the present invention is that: the present invention sets a first channel and a second channel, and connects the first channel and the second channel to form a connecting hole, so that the gas in the inner ring gas channel and the outer ring gas channel can communicate with each other before flowing to the gas stove connected to the stage valve. The gas communicates with each other through the connecting hole, so that the amount of gas when flowing out through the inner ring gas channel and the outer ring gas channel remains consistent. Accordingly, the inner ring fire cover and the outer ring fire cover of the gas stove receive the same amount of gas, and the inner ring fire cover and the outer ring fire cover will have the same fire power when burning, that is, synchronous fire, so as to evenly heat the pot and different positions of the food in the pot are evenly heated, thereby increasing the fire power range of the gas stove and improving the user's cooking experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 FIG. 4 is a perspective view of a stage valve according to an embodiment of the present invention.

[0038] Figure 2 Schematic diagram of the third channel of the section valve according to an embodiment of the present invention.

[0039] Figure 3 FIG. 1 is a top view of a section valve according to an embodiment of the present invention.

[0040] Figure 4 for Figure 3 AA partial cross-sectional view.

[0041] Description of reference numerals:

[0042] Inner ring gas channel 1

[0043] Outer ring gas channel 2

[0044] First channel 3

[0045] Second channel 4

[0046] Communication hole 5

[0047] First valve 6

[0048] Motion axis 61

[0049] Third channel 7

[0050] Cover 8 DETAILED DESCRIPTION

[0051] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0052] This embodiment provides a segment valve, the specific structure of which is as follows Figure 1 、 Figure 2 and Figure 3 As shown, it includes an inner ring gas channel 1 and an outer ring gas channel 2, which are respectively connected to the closure of the section valve and are connected to different positions of the closure along the height direction of the closure. After the gas enters the section valve, it is connected to the inner ring gas channel 1 and the outer ring gas channel 2 in sequence through the closure. The connection between the inner ring gas channel 1 and the outer ring gas channel 2 by the closure is determined according to the rotation angle of the closure and the valve stem of the section valve to meet the user's normal fire adjustment needs during the cooking process. This is the existing technology and will not be described in detail here. Among them, the section valve also includes a first channel 3 and a second channel 4, the first channel 3 and the second channel 4 are both arranged in the valve body of the section valve, and are processed by the opening method in the prior art. The first channel 3 is connected to the inner ring gas channel 1, and the second channel 4 is connected to the outer ring gas channel 2. The first channel 3 and the second channel 4 are connected and a connecting hole 5 is formed at the connection. The section valve is also provided with a first valve 6, which is provided corresponding to the connecting hole 5 and is used to open or close the connecting hole 5. When the first valve 6 opens the connecting hole 5, the gas in the inner ring gas channel 1 and the outer ring gas channel 2 The first channel 3 and the second channel 4 and the connecting hole 5 can be interconnected, that is, the gas can flow between the inner ring gas channel 1 and the outer ring gas channel 2. At this time, the rotation of the shutter cannot affect the gas flowing to the gas stove connected to the stage valve. After the gas is mixed from the inner ring gas channel 1 and the outer ring gas channel 2, the amount of gas flowing to the gas stove remains consistent. Accordingly, the inner ring fire cover and the outer ring fire cover of the gas stove have the same thermal efficiency when burning due to the consistent amount of gas, that is, the inner ring fire cover and the outer ring fire cover achieve synchronous firepower. Under synchronous firepower, the thermal efficiency received by each position of the bottom of the pot when the gas stove heats the pot is consistent, and the food in the pot also receives consistent thermal efficiency at each position in contact with the pot, so the food is heated more evenly. By setting the first channel 3, the second channel 4 and the connecting hole 5, the fire adjustment range of the section valve is further increased. Accordingly, the fire usage scenarios of the gas stove are increased accordingly, which not only expands the fire adjustment range of the section valve, but also can meet the user's cooking method of uniform heating of ingredients according to the user's actual needs, thereby improving the user's experience.

[0053] When the first valve 6 closes the connecting hole 5, the gas is connected to the inner ring gas channel 1 and the outer ring gas channel 2 in sequence according to the rotation angle of the closure, and flows to the inner ring fire cover and the outer ring fire cover of the gas stove through the inner ring gas channel 1 or the outer ring gas channel 2 separately. At this time, the gas stove can adjust the fire power from small to large according to the user's rotation of the valve stem and the gas knob to meet the user's fire power requirements under normal cooking.

[0054] Furthermore, if Figure 3 and Figure 4 As shown, the connection between the first channel 3 and the inner ring gas channel 1 is vertically arranged, and the connection between the second channel 4 and the outer ring gas channel 2 is vertically arranged.

[0055] Specifically, the first channel 3 and the second channel 4 are rectangular grooves opened on the valve body. The connection between the first channel 3 and the inner ring gas channel 1 is vertically arranged, and the connection between the second channel 4 and the outer ring gas channel 2 is vertically arranged. When the gas flows from the inner ring gas channel 1 to the outer ring gas channel 2 through the first channel 3 and the second channel 4, the gas flows vertically at the first channel 3 and the inner ring gas channel 1 or the second channel 4 and the outer ring gas channel 2. The resistance it encounters is affected by the vertical connection between the first channel 3 and the inner ring gas channel 1 and the second channel 4 and the outer ring gas channel 2. The resistance is affected by the gas in the flow process. The resistance is kept consistent by vertically arranging the first channel 3 with the inner ring gas channel 1 and the second channel 4 with the outer ring gas channel 2, so that when the connecting hole 5 is opened, the first channel 3 between the inner ring gas channel 1 and the outer ring gas channel 2 is more uniform when the gas is communicated with each other, avoiding uneven mixing when the gas flows through the inner ring gas channel 1 to the gas stove due to the different resistances encountered by the inner ring gas channel 1 and the outer ring gas channel 2 when they are communicated with each other, resulting in a situation where the fire power of the inner ring fire cover and the outer ring fire cover are out of sync. Similarly, the second channel 4 and the outer ring gas channel 2 also adopt this layout to improve the uniformity of the gas flow entering the outer ring fire cover.

[0056] In this embodiment, if Figure 2 As shown, the first valve 6 is equipped with a motion shaft 61 that reciprocates along the axis of the connecting hole 5. A circular structure is provided at the end of the motion shaft 61 near the connecting hole 5. The annular structure is larger than the connecting hole 5. The reciprocating motion shaft 61 covers the circular structure on the connecting hole 5, thereby closing the connecting hole 5 and ensuring the sealing of the stage valve. Furthermore, when opening the connecting hole 5, the reciprocating motion shaft 61 only needs to connect the first valve 6. The motion direction of the motion shaft 61 remains consistent with the axial direction of the connecting hole 5. This reduces the internal space occupied by the motion shaft 61 when opening or closing the connecting hole 5, thereby improving space utilization.

[0057] In this embodiment, the first valve 6 selects a bistable valve in the prior art. The bistable valve has a magnetic structure so that when it is opened, it only needs to be powered by a battery, thereby reducing the power consumption of the section valve when it is continuously powered on, saving energy consumption, and reducing the cost of using the section valve during use.

[0058] The sectional valve also includes a third channel 7. The first channel 3 is connected to the inner ring gas channel 1 and is perpendicularly arranged. The second channel 4 is connected to the outer ring gas channel 2 and is perpendicularly arranged. The first channel 3 and the second channel 4 are adjacent to each other, and the third channel 7 is further provided within the sectional valve body. The third channel 7 is connected to the second channel 4 and the connecting hole 5. The opening of the third channel 7 is perpendicular to the direction in which the first and second channels 3 and 4 extend. The third channel 7 is used to accommodate part of the housing of the first valve 6. The opening of the third channel 7 is a stepped hole. In other words, the cross-sectional dimension of the third channel 7 away from the first valve 6 is smaller than the cross-sectional dimension of the third channel 7 near the first valve 6. The partial housing of the first valve 6 is embedded in the third channel 7, and the stepped hole improves the sealing performance at the connection between the third channel 7 and the first valve 6. Furthermore, because the third channel 7 is perpendicular to the direction in which the first and second channels 3 and 4 extend, the gas resistance remains consistent when the gas flows from the connecting hole 5 through the third channel 7, or when the gas flows from the third channel into the connecting hole 5, similar to the gas resistance described above. When the first valve 6 opens the connecting hole 5, the gas in the outer ring gas channel 2 flows into the connecting hole 5 through the second channel 4, and the gas in the inner ring gas channel 1 flows into the connecting hole 5 through the first channel 3 and is fully mixed, thereby achieving gas interconnection between the inner ring gas channel 1 and the outer ring gas channel 2, thereby achieving synchronous combustion with the gas stove connected to the stage valve. When the first valve 6 closes the connecting hole 5, the gas in the outer ring gas channel 2 only remains in the second channel 4 and the third channel 7. At this time, the stage valve adjusts the flame as needed based on the angle of the valve stem and the gas knob rotated by the user, and the outer ring flame cover and inner ring flame cover of the gas stove connected to the stage valve burn accordingly and provide different flames.

[0059] Furthermore, the sectional valve is also provided with a sealing member (not shown in the figure). The openings of the first channel 3 and the second channel 4 are located on the valve body of the sectional valve. The opening of the first channel 3 can be located on the same side of the valve body as the opening direction of the second channel 4, and of course, can also be located on different sides of the valve body. When the opening direction of the first channel 3 and the opening direction of the second channel 4 are located on the same side of the valve body, the sectional valve only needs to be provided with a cover body 8 for sealing the openings of the first channel 3 and the second channel 4. In this case, the sealing member is located on the side of the valve body corresponding to the opening of the first channel 3 and the second channel 4. The cover body 8 is provided to cover the openings of the first channel 3 and the second channel 4 to improve the sealing performance of the sectional valve through the sealing member, thereby preventing gas leakage and the resulting safety problems.

[0060] When the opening direction of the first channel 3 and the opening direction of the second channel 4 are located on different sides of the valve body, two cover bodies 8 are correspondingly provided, and two seals are also correspondingly provided. Similarly, the seals are provided at the opening of the valve body corresponding to the first channel 3 or the second channel 4, and the cover body 8 is used to cover the opening of the first channel 3 or the second channel 4 to improve the sealing performance of the section valve through the seal.

[0061] At the same time, a seal is also provided in the third channel 7. The shape of the seal in the third channel 7 is consistent with the cross-sectional shape of the third channel 7. The seal is located between the inner wall of the third channel 7 and the shell of the first valve 6. The first valve 6 and the valve body of the section valve are fixedly connected by bolts. At the same time as the bolt connection, the shell of the first valve 6 extends into the third channel 7 and presses the seal to improve the sealing performance of the section valve.

[0062] In one implementation of this embodiment, the channel cross-sectional size of the first channel 3 is the same as the channel cross-sectional size of the inner ring gas channel 1. When the gas flows into the first channel 3 through the inner ring gas channel 1, the amount of gas flowing in remains the same as the amount of gas in the inner ring gas channel 1. At the same time, the channel cross-sectional size of the second channel 4 is the same as the channel cross-sectional size of the outer ring gas channel 2. When the gas flows into the second channel 4 through the outer ring gas channel 2, the amount of gas flowing in also remains the same as the amount of gas in the outer ring gas channel 2. When the first valve 6 opens the connecting hole 5, the gas Whether the first channel 3 flows to the second channel 4 or flows from the second channel 4 to the first channel 3, the amount of gas flowing therethrough always remains the same, that is, when the gas communicates between the inner ring gas channel 1 and the outer ring gas channel 2, the amount of gas communicated therethrough remains the same, and further, when the inner ring gas channel 1 and the outer ring gas channel 2 flow to the gas stove, the amount of gas flowing to the inner ring fire cover or the outer ring fire cover always remains the same, and the gas pressure is also the same, and further, when the gas stove burns, the thermal efficiency generated by the combustion of the inner ring fire cover and the outer ring fire cover is the same, and the inner ring fire cover and the outer ring fire cover achieve synchronous firepower, i.e., synchronous fire.

[0063] Furthermore, the cross-sectional dimensions of the connecting hole 5 are identical to those of the first channel 3 and the second channel 4. Compared to a situation where the connecting hole 5, the first channel 3, and the second channel 4 have different dimensions, the cross-sectional dimensions of the connecting hole 5 being identical to those of the first channel 3 and the second channel 4 is equivalent to the first channel 3, the second channel 4, and the connecting hole 5 forming a passage of equal dimensions, which is opened or closed by the first valve 6. Only when the first valve 6 is open can gas flow from the inner ring gas passage 1 through this passage to communicate with the outer ring gas passage 2. At this time, the amount of gas in the inner ring gas passage 1 and the outer ring gas passage 2 of the stage valve remains consistent, and the amount of gas delivered to the gas stove through the stage valve also remains consistent.

[0064] In this embodiment, the connecting position of the first channel 3 and the inner ring gas channel 1 is close to the inlet side of the inner ring gas channel 1. Compared with the connecting position of the first channel 3 and the inner ring gas channel 1 being close to the outlet side of the inner ring gas channel 1, when the connecting hole 5 is opened, the gas can first enter the first channel 3 and the connecting hole 5 and the second channel 4 to communicate with the outer ring gas channel 2. That is to say, before the gas flows out of the inner ring gas channel 1, the gas volume of the inner ring gas channel 1 and the outer ring gas channel 2 of the section valve is kept consistent, thereby avoiding the situation where the inconsistent gas volume caused by the short interconnection time affects the fire power synchronization of the inner ring fire cover and the outer ring fire cover of the gas stove connected to the section valve.

[0065] Of course, in other embodiments, the connecting position between the second channel 4 and the outer ring gas channel 2 is close to the inlet side of the inner ring gas channel 1. Its purpose is also to achieve mutual communication when the connecting hole 5 is opened before the gas flows out of the inner ring gas channel 1 or the outer ring gas channel 2, that is, the gas volume remains consistent, thereby ensuring that the synchronous fire of the inner ring fire cover and the outer ring fire cover of the gas stove is not affected.

[0066] In this embodiment, the first channel 3 is arranged perpendicular to the inner ring gas channel 1, the second channel 4 is arranged perpendicular to the outer ring gas channel 2, and the first channel 3 and the second channel 4 are arranged in parallel. On the basis of ensuring that the gas resistance when the gas flows in the first channel 3 and the second channel 4 is the same, a connecting hole 5 is provided in the overlapping part of the tube wall of the first channel 3 and the second channel 4. At this time, the connecting hole 5 is arranged perpendicular to the first channel 3, and the connecting hole 5 is also arranged perpendicular to the second channel 4. The resistance encountered by the gas when flowing into the connecting hole 5 through the first channel 3 or when flowing into the connecting hole 5 through the second channel 4 remains consistent, and the uniformity of the gas when flowing between the inner ring gas channel 1 and the outer ring gas channel 2 is correspondingly improved.

[0067] In addition, this embodiment also provides a gas stove including the aforementioned stage valve. During use, the gas stove using the stage valve can not only rotate the valve stem and closer of the stage valve by turning the gas knob, but also sequentially open the inner and outer ring flame covers of the gas stove from small to large to adjust the flame, thereby meeting user needs. The connecting hole 5 can also be opened by opening the first valve 6 of the section valve, so that the gas flows into the outer ring gas channel 2 through the inner ring gas channel 1, or flows into the inner ring gas channel 1 through the outer ring gas channel 2, and the gas in the inner ring gas channel 1 and the outer ring gas channel 2 are interconnected. Accordingly, the amount of gas flowing out through the inner ring gas channel 1 and the outer ring gas channel 2 is kept consistent. The inner ring fire cover and the outer ring fire cover of the gas stove have the same thermal efficiency due to the consistent amount of gas during combustion, and the fire power of the inner ring fire cover and the outer ring fire cover is kept consistent, that is, synchronous fire, which not only meets the user's normal fire demand for the gas stove, but also can additionally improve the fire adjustment mode with a wider range than the normal fire demand. In this mode, the inner ring fire cover and the outer ring fire cover maintain synchronous fire power, so that when heating the pot and the ingredients in the pot, the temperature of different positions of the ingredients is consistent, the ingredients are heated more evenly, and the cooking experience of the user is improved.

[0068] In this embodiment, the gas stove also includes an angle detection mechanism, which is provided corresponding to the gas knob of the section valve and is used to detect the rotation angle of the gas knob, wherein the angle detection mechanism is electrically connected to the first valve 6. When the user does not need synchronous fire, the angle detection mechanism is not connected to the first valve 6. When the user turns on the synchronous fire, the first valve 6 needs to detect the angle of the valve stem and the gas knob of the section valve at this time through the angle detection mechanism before opening the connecting hole 5. When the angle of the valve stem and the gas knob of the section valve is rotated, only the inner ring gas channel is connected. 1 and the outer ring gas channel 2 is not connected, the angle detection mechanism further judges the angle of the valve stem and the gas knob of the stage valve at this time. That is to say, when all the fire holes in the multiple holes of the inner ring fire cover of the gas stove connected to the stage valve are not burning, that is, the fire power of the inner ring fire cover is in the "medium fire" or "low fire" state, since the fire power of the inner ring fire cover is relatively weak at this time, the fire transmission performance between the inner ring fire cover and the fire transmission mechanism of the gas stove is relatively poor. The fire transmission mechanism and the fire transmission principle are the same as those of the gas stove in the prior art, and will not be described in detail here. At this time, opening the connecting hole 5 makes the gas of the inner ring gas channel 1 and the outer ring gas channel 2 interconnected, and the amount of gas flowing into the outer ring gas channel 2 is less, and correspondingly the amount of gas transmitted to the outer ring fire cover is also less. Opening the connecting hole 5 and transmitting the fire to the outer ring fire cover through the fire transmission mechanism will cause the inner ring fire cover to fail to transmit the fire to the outer ring fire cover due to the low gas volume of the outer ring fire cover or insufficient fire power of the inner ring fire cover. In order to avoid the failure of fire transmission, the angle detection mechanism is set to disconnect the first valve 6 in this case, and the first valve 6 cannot open the connecting hole 5. The user cannot turn on the synchronous fire mode in this case, so as to avoid the failure of the user to enter the synchronous fire of the inner ring fire cover and the outer ring fire cover when the fire power of the inner ring fire cover is low, thereby improving the user experience on the basis of ensuring the success rate of fire transmission of the gas stove.

[0069] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of the present invention.

Claims

1. A sectional valve comprising an inner ring gas channel and an outer ring gas channel, characterized in that: The sectional valve further includes a first channel and a second channel, the first channel and the second channel respectively communicating with the inner ring gas channel and the outer ring gas channel, a communicating hole being formed between the first channel and the second channel, and a first valve being provided corresponding to the communicating hole and used to open or close the communicating hole, the first channel being perpendicular to the inner ring gas channel at its connection, and the second channel being perpendicular to the outer ring gas channel at its connection, the first valve being provided with a motion shaft that reciprocates along the axis of the communicating hole, the end of the motion shaft being used to open or close the communicating hole; The cross-sectional size of the first channel is the same as that of the inner ring gas channel, and the cross-sectional size of the second channel is the same as that of the outer ring gas channel; The cross-sectional sizes of the first channel, the second channel and the communicating hole are all the same; The communication position between the first channel and the inner ring gas channel is close to the inlet side of the inner ring gas channel, and the communication position between the second channel and the outer ring gas channel is close to the inlet side of the inner ring gas channel; The first channel and the second channel are arranged in parallel, and the first channel and the second channel have relatively overlapping tube walls, and the communicating hole is opened on the relatively overlapping tube walls.

2. The sectional valve according to claim 1, characterized in that: The first valve is a bistable valve.

3. The sectional valve according to claim 1, characterized in that: The section valve further includes a third channel, which is communicated with the second channel and the first channel respectively. The housing of the first valve is located in the third channel.

4. The sectional valve according to claim 1, characterized in that: A sealing member is provided between the valve body and the cover of the section valve, and the sealing member is arranged corresponding to the opening direction of the first channel and / or the second channel.

5. The sectional valve according to claim 3, characterized in that: A sealing member is provided in the third channel, and the sealing member is located between the inner wall of the third channel and the housing of the first valve.

6. A gas stove, characterized in that: The gas stove comprises the stage valve according to any one of claims 1 to 5.

7. The gas stove according to claim 6, characterized in that: The gas stove also includes an inner ring fire cover, an outer ring fire cover and an angle detection mechanism. The angle detection mechanism is arranged corresponding to the gas knob of the stage valve. The angle detection mechanism is electrically connected to the first valve. When the fire hole on the inner ring fire cover is not completely burned, the first valve cannot open the connecting hole.

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