Gas valve and gas stove thereof

Abstract

The utility model relates to a gas valve and a gas stove thereof, the gas valve comprises a valve body and a valve core assembly, the valve body is applied to the stove and is provided with a central fire conveying channel and an outer ring fire conveying channel, the valve core assembly is rotatably arranged on the valve body, and the valve core assembly has a zero position and a tail position; when the valve element assembly is located at the zero position, the center fire conveying channel and the outer ring fire conveying channel are closed. When the valve element assembly rotates to the tail position, the center fire small ventilation part of the valve element assembly is communicated with the center fire conveying channel, and the outer ring fire large ventilation part of the valve element assembly is communicated with the outer ring fire conveying channel, so that the center fire of the stove is in the minimum fire state, and the defect that in the prior art, when the valve element assembly rotates to the tail end angle position, the valve element assembly cannot rotate is effectively overcome. According to the valve element assembly, the defect that only center fire exists is overcome, the defect that in the one-section type adjusting process of a valve element assembly in the prior art, the center fire and outer ring fire only gradually become larger and smaller is overcome, and then the use requirement of a user is met, and cooking schemes such as soup cooking and dish frying are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas transmission, in particular to a gas valve and a gas stove thereof. Background Art

[0002] The existing gas valve only has a single-stage fire adjustment. It can be understood that the valve stem of the gas valve rotates from 0° to 180°, simply controlling the change of the fire power of the burner head from small to large, as well as opening and closing the gas passage. The single-stage fire adjustment makes the outer ring fire and the central fire of the burner head become smaller or larger at the same time. By controlling a solenoid valve, the outer ring fire delivery passage is opened or closed to use the central fire alone, and the central fire and the outer ring fire are used at the same time. Therefore, the fire adjustment of the existing gas valve is single and cannot meet the needs of users, so it needs to be further improved. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a gas valve and a gas stove thereof. When the valve core assembly rotates to the end angle position, the central fire of the cooker is in the minimum fire state and the outer ring fire is in the maximum fire state, effectively making up for the deficiency that there is only the central fire when the valve core assembly rotates to the end angle position in the prior art, and solving the defect that in the one-stage adjustment process of the valve core assembly in the prior art, the fire power of the central fire and the outer ring fire only gradually increases or decreases, thereby meeting the needs of users and realizing cooking schemes such as stewing soup and stir-frying.

[0004] The purpose of the utility model is realized as follows:

[0005] A gas valve includes a valve body applied to a cooker and provided with a central fire delivery passage and an outer ring fire delivery passage, and a valve core assembly rotatably arranged on the valve body. The valve core assembly has a zero position and a final position;

[0006] When the valve core assembly is in the zero position, the central fire delivery passage and the outer ring fire delivery passage are closed;

[0007] When the valve core assembly rotates to the final position, the small air vent part of the central fire of the valve core assembly is communicated with the central fire delivery passage, and the large air vent part of the outer ring fire of the valve core assembly is communicated with the outer ring fire delivery passage, so that the central fire of the cooker is in the minimum fire state and the outer ring fire is in the maximum fire state.

[0008] A position sensor is arranged on the valve body. When the valve core assembly rotates to the final position, the position sensor is triggered, so that the position sensor outputs a corresponding electrical signal to the electronic control board of the cooker, facilitating the user to master the rotation position of the valve core assembly and facilitating the subsequent control output of the fire power of the cooker;

[0009] A switching valve for opening and closing the outer-ring fire delivery passage is provided on the valve body. When the valve core assembly rotates to the final position, it triggers a position sensor, which transmits the corresponding electrical signal to the electronic control board. After receiving the electrical signal, the electronic control board outputs an electrical signal to control the opening and closing of the switching valve, thereby opening and closing the outer-ring fire delivery passage to control the opening and closing of the outer-ring fire of the cooker;

[0010] The position sensor is a microswitch, and the switching valve is a self-priming valve, a steady-state valve or a solenoid valve.

[0011] The angle adjustment range of the valve core assembly on the valve body is 0° - X°, where 0° is the angle corresponding to the zero position of the valve core assembly, and X° is the angle corresponding to the final position of the valve core assembly, and 200° ≤ X° ≤ 270°.

[0012] The X° is one of 220°, 230°, 240°, 250°, 260°, 270°.

[0013] A push-type zero-position limiting device is provided between the valve body and the valve core assembly corresponding to the zero position of the valve core assembly;

[0014] Before the valve core assembly rotates operationally, the valve core assembly moves axially up and down by pressing and disengages from the zero-position limiting device, and then the valve core assembly starts to rotate from the zero position;

[0015] A rotation limiting device is provided between the valve body and the valve core assembly;

[0016] The rotation limiting device is used to prevent the valve core assembly from directly rotating to the final position after starting to rotate from the zero position. When the valve core assembly rotates to 180°, the rotation limiting device is in limit cooperation with the valve core assembly to prevent the valve core assembly from further rotating to the final position;

[0017] Alternatively, there is no rotation limiting device between the valve body and the valve core assembly, and the valve core assembly directly rotates to the final position after starting to rotate from the zero position.

[0018] The valve core assembly is axially elastically movable up and down and circumferentially rotatably arranged on the valve body. The rotation limiting device and / or the zero-position limiting device includes a limiting portion provided on the valve body and a cooperating portion provided on the valve core assembly;

[0019] When the valve core assembly is in the zero position or the valve core assembly rotates to 180°, the cooperating portion is limited on the limiting portion to block the rotation of the valve core assembly; the valve core assembly drives the cooperating portion to disengage from the limiting portion through axial movement up and down

[0020] The valve core assembly has a position for separately closing the outer-ring fire. The rotation angles corresponding to the zero position, the position for separately closing the outer-ring fire, and the final position of the valve core assembly increase in sequence;

[0021] When the valve core assembly rotates to the position where the outer ring fire is independently closed, the large central fire ventilation part of the valve core assembly is communicated with the central fire delivery channel, and the outer ring fire delivery channel is closed, so that the central fire of the cooker is in the large fire state and the outer ring fire is in the closed state;

[0022] Between the zero position and the position where the outer ring fire is independently closed is a section of firepower adjustment interval of the valve core assembly. Between the position where the outer ring fire is independently closed and the end position is the second section of firepower adjustment interval of the valve core assembly. In the second section of firepower adjustment interval, when the valve core assembly rotates from the position where the outer ring fire is independently closed to the end position, the valve core assembly switches from the state where the large central fire ventilation part is communicated with the central fire delivery channel to the state where the small central fire ventilation part is communicated with the central fire delivery channel, so that the central fire of the cooker is in the minimum fire state of the second section of firepower adjustment interval.

[0023] The valve core assembly includes a valve core rotating on the valve body, and the large central fire ventilation part and the small central fire ventilation part are arranged in a circumferential distribution on the valve core;

[0024] When the valve core assembly is at 180°, the large central fire ventilation part is completely communicated with the central fire delivery channel, and the central fire of the cooker is in the large fire state;

[0025] When the valve core assembly is at 230°, the small central fire ventilation part is communicated with the central fire delivery channel, and the central fire of the cooker is in the minimum fire state.

[0026] The large outer ring fire ventilation part includes a first large outer ring fire ventilation part and a second large outer ring fire ventilation part arranged on the valve core. The valve core assembly further includes a small outer ring fire ventilation part arranged on the valve core. The small outer ring fire ventilation part, the first large outer ring fire ventilation part and the second large outer ring fire ventilation part are arranged in a circumferential distribution on the valve core; The small outer ring fire ventilation part is arranged between the first large outer ring fire ventilation part and the second large outer ring fire ventilation part;

[0027] When the valve core assembly is at 180°, the outer ring fire of the cooker is closed, and 180° is the position where the outer ring fire is independently closed;

[0028] When the valve core assembly is at 230°, the second large outer ring fire ventilation part is completely communicated with the outer ring fire delivery channel, and the outer ring fire of the cooker is in the maximum fire state.

[0029] The valve core assembly moves axially up and down elastically and rotates circumferentially on the valve body. The valve body is provided with a limiting part corresponding to a section of firepower adjustment interval of the valve core assembly. When the valve core assembly rotates to the end position of the section of firepower adjustment interval, the limiting part blocks the rotation of the valve core assembly; The valve core assembly disengages from the limiting part through axial up and down movement and rotates the valve core assembly. The elastic up and down movement of the valve core assembly enables the valve core assembly to be in the second section of firepower adjustment interval.

[0030] A position sensor is provided at the end position of the second-stage firepower adjustment range corresponding to the valve body. When the valve core assembly is on the rotation trajectory of the second-stage firepower adjustment range and rotates to the end position of the second-stage firepower adjustment range, the valve core assembly acts on the position sensor.

[0031] The central fire delivery channel and the outer ring fire delivery channel are arranged at left and right intervals and vertically staggered in the valve body. The valve core assembly includes a valve core that rotates around the axis of the valve stem. The valve core is provided with a central fire gas channel and an outer ring fire gas channel that are vertically spaced apart.

[0032] The number of the central fire gas channels and the outer ring fire gas channels is more than two. More than two central fire gas channels and outer ring fire gas channels are arranged in a circular distribution on the outer surface of the valve core.

[0033] An installation cavity is provided on the valve body. The valve core of the valve core assembly is limitedly installed on the installation cavity and connected to the valve stem. The valve stem drives the valve core to rotate limitedly in the installation cavity.

[0034] An upper cover is provided above the installation cavity of the valve body. The valve stem passes through the upper cover and is inserted into the installation cavity.

[0035] When the valve core assembly is on the rotation trajectory of the first-stage firepower adjustment range, a clamping groove or clamping rib forming a limiting part is provided in the upper cover. A positioning piece is provided on the valve stem, and a matching part acting on the limiting part is provided on the positioning piece. When the valve stem rotates to the end position of the first-stage firepower adjustment range, the matching part acts on the limiting part.

[0036] A cover plate covering the opening of the installation cavity is provided on the valve body. A position sensor is provided on the cover plate, and a contact part is provided on the valve stem.

[0037] When the valve core assembly is on the rotation trajectory of the second-stage firepower adjustment range, the contact part rotates with the valve stem to the end position of the second-stage firepower adjustment range, and the contact part acts on the position sensor.

[0038] An outer ring fire delivery section communicating with the outer ring fire delivery channel is provided on the valve body. A switch valve for opening and closing the outer ring fire delivery section is provided on the valve body, and the switch valve is fixed to the outside of the outer ring fire delivery section of the valve body through a connecting piece.

[0039] A gas stove further includes the above gas valve, and the gas valve is arranged on the stove body.

[0040] When the burner works, an outer ring fire and a central fire are formed on the burner head.

[0041] The burner includes a central fire ejector tube and an outer ring fire ejector tube. The central fire ejector tube communicates with the central fire delivery channel, and the outer ring fire ejector tube communicates with the outer ring fire delivery channel.

[0042] The gas stove further includes a control device. The gas valve includes a switching valve disposed in the valve body and used to open and close the outer-ring fire delivery channel, and the switching valve is electrically connected to the control device;

[0043] The switching valve is a self-priming valve, a steady-state valve or a solenoid valve.

[0044] The beneficial effects of the present utility model are as follows:

[0045] When the valve core assembly rotates to the end angle position, the center fire of the cooker is in the minimum fire state and the outer-ring fire is in the maximum fire state, effectively making up for the deficiency in the prior art that when the valve core assembly rotates to the end angle position, there is only the center fire, and solving the defect in the prior art that in the one-stage adjustment process of the valve core assembly, the fire powers of the center fire and the outer-ring fire only gradually increase or decrease, thereby meeting the user's use and realizing cooking schemes such as making soup and stir-frying.

[0046] The gas valve additionally adds a section of rotation trajectory (two-stage fire power adjustment interval) on the rotation trajectory of the valve core assembly, meets the user experience, and increases the fire power adjustment change of the center fire and the outer-ring fire. Meets the user's use and realizes cooking schemes such as making soup and stir-frying. Description of the Drawings

[0047] Figure 1 It is a schematic structural diagram of the center-fire delivery channel and the outer-ring fire delivery channel according to an embodiment of the present utility model.

[0048] Figure 2 It is a three-dimensional structural diagram of the gas valve according to an embodiment of the present utility model.

[0049] Figure 3 It is a partial assembly and disassembly structural diagram of the gas valve according to an embodiment of the present utility model.

[0050] Figure 4 It is a three-dimensional structural diagram of the valve body according to an embodiment of the present utility model.

[0051] Figure 5 It is a three-dimensional structural diagram of the valve core assembly according to an embodiment of the present utility model.

[0052] Figure 6 It is another three-dimensional structural diagram of the valve core assembly according to an embodiment of the present utility model.

[0053] Figure 7 It is a schematic diagram of the change of the center-fire power according to an embodiment of the present utility model.

[0054] Figure 8 It is a schematic diagram of the change of the outer-ring fire power according to an embodiment of the present utility model.

[0055] Figure 9Schematic diagram of the valve core assembly of an embodiment of the present utility model rotating to the 230° trigger position sensor.

[0056] Figure 10 Schematic diagram of the valve core assembly of an embodiment of the present utility model rotating to the 180° trigger limit structure.

[0057] Figure 11 When the valve core assembly of an embodiment of the present utility model is in the 0° position, the central flame is in the closed state.

[0058] Figure 12 When the valve core assembly of an embodiment of the present utility model is in the 0° position, the outer ring flame is in the closed state.

[0059] Figure 13 When the valve core assembly of an embodiment of the present utility model is in the 180° position, the central flame is in the high fire state.

[0060] Figure 14 When the valve core assembly of an embodiment of the present utility model is in the 180° position, the outer ring flame is in the closed state.

[0061] Figure 15 When the valve core assembly of an embodiment of the present utility model is in the 230° position, the central flame is in the minimum fire state.

[0062] Figure 16 When the valve core assembly of an embodiment of the present utility model is in the 230° position, the outer ring flame is in the maximum fire state.

[0063] Figure 17 Schematic diagram of the structure of a gas stove of an embodiment of the present utility model. Detailed implementation mode

[0064] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0065] See Figures 1-16 , a gas valve, comprising a valve body 1 applied to a cooker and provided with a central flame delivery channel 2 and an outer ring flame delivery channel 3, and a valve core assembly 4 rotatably arranged on the valve body 1, the valve core assembly 4 having a zero position and a final position;

[0066] When the valve core assembly 4 is in the zero position, the central flame delivery channel 2 and the outer ring flame delivery channel 3 are closed;

[0067] When the valve core assembly 4 rotates to the final position, the central flame small ventilation part 26 of the valve core assembly 4 is communicated with the central flame delivery channel 2, and the outer ring flame large ventilation part of the valve core assembly 4 is communicated with the outer ring flame delivery channel 3, so that the central flame of the cooker is in the minimum fire state and the outer ring flame is in the maximum fire state.

[0068] A position sensor 10 is provided on the valve body 1. When the valve core assembly 4 rotates to the end position, the position sensor 10 is triggered, so that the position sensor 10 outputs a corresponding electrical signal to the electronic control board of the cooker.

[0069] A switching valve 20 for opening and closing the outer ring fire delivery channel 3 is provided on the valve body 1.

[0070] The position sensor 10 is a microswitch, and the switching valve 20 is a self-priming valve, a steady-state valve or a solenoid valve.

[0071] The angle adjustment range of the valve core assembly 4 on the valve body 1 is 0° - X°, where 0° is the angle corresponding to the zero position of the valve core assembly 4, and X° is the angle corresponding to the end position of the valve core assembly 4, and 200° ≤ X° ≤ 270°.

[0072] The X° is one of 220°, 230°, 240°, 250°, 260°, 270°.

[0073] A push-type zero position limiting device is provided between the valve body 1 and the valve core assembly 4 corresponding to the zero position of the valve core assembly 4.

[0074] Before the valve core assembly 4 starts to rotate, the valve core assembly 4 moves axially up and down by pressing and disengages from the zero position limiting device, and then the valve core assembly 4 starts to rotate from the zero position.

[0075] A rotation limiting device is provided between the valve body 1 and the valve core assembly 4.

[0076] The rotation limiting device is used to prevent the valve core assembly 4 from directly rotating to the end position after starting to rotate from the zero position. When the valve core assembly 4 rotates to 180°, the rotation limiting device is in limit cooperation with the valve core assembly 4 to prevent the valve core assembly 4 from further rotating to the end position.

[0077] Alternatively, there is no rotation limiting device between the valve body 1 and the valve core assembly 4, and the valve core assembly 4 directly rotates to the end position after starting to rotate from the zero position.

[0078] The valve core assembly 4 has a position where the outer ring fire is closed separately. The rotation angles corresponding to the zero position, the position where the outer ring fire is closed separately, and the end position of the valve core assembly 4 increase in sequence.

[0079] When the valve core assembly 4 rotates to the position where the outer ring fire is closed separately, the large air vent part 27 of the center fire of the valve core assembly 4 is communicated with the center fire delivery channel 2, and the outer ring fire delivery channel 3 is closed, so that the center fire of the cooker is in the large fire state and the outer ring fire is in the closed state.

[0080] Between the zero position and the position where the outer-ring flame is separately turned off is a section of the flame adjustment range of the valve core assembly 4. Between the position where the outer-ring flame is separately turned off and the end position is the second section of the flame adjustment range of the valve core assembly 4. In the second section of the flame adjustment range, when the valve core assembly 4 rotates from the position where the outer-ring flame is separately turned off to the end position, the valve core assembly 4 switches from the state where the large central-fire ventilation part 27 is connected to the central-fire delivery channel 2 to the state where the small central-fire ventilation part 26 is connected to the central-fire delivery channel 2, so that the central flame of the cooking appliance is in the smallest fire state in the second section of the flame adjustment range.

[0081] The valve core assembly 4 includes a valve core 6 that rotates on the valve body 1. The large central-fire ventilation part 27 and the small central-fire ventilation part 26 are arranged in a circumferential distribution on the valve core 6.

[0082] When the valve core assembly 4 is at 180°, the large central-fire ventilation part 27 is completely connected to the central-fire delivery channel 2, and the central flame of the cooking appliance is in the large fire state.

[0083] When the valve core assembly 4 is at 230°, the small central-fire ventilation part 26 is connected to the central-fire delivery channel 2, and the central flame of the cooking appliance is in the smallest fire state.

[0084] The outer-ring flame large ventilation part includes a first outer-ring flame large ventilation part 28 and a second outer-ring flame large ventilation part 30 arranged on the valve core 6. The valve core assembly 4 further includes an outer-ring flame small ventilation part 29 arranged on the valve core 6. The outer-ring flame small ventilation part 29, the first outer-ring flame large ventilation part 28 and the second outer-ring flame large ventilation part 30 are arranged in a circumferential distribution on the valve core 6; the outer-ring flame small ventilation part 29 is arranged between the first outer-ring flame large ventilation part 28 and the second outer-ring flame large ventilation part 30.

[0085] When the valve core assembly 4 is at 180°, the outer-ring flame of the cooking appliance is turned off; 180° is the position where the outer-ring flame is separately turned off.

[0086] When the valve core assembly 4 is at 230°, the second outer-ring flame large ventilation part 30 is completely connected to the outer-ring flame delivery channel 3, and the outer-ring flame of the cooking appliance is in the largest fire state.

[0087] The valve core assembly 4 is axially elastically moved up and down and is circumferentially rotatably arranged on the valve body 1. The valve body 1 is provided with a limiting part 7 corresponding to a section of the flame adjustment range of the valve core assembly 4. When the valve core assembly 4 rotates to the end position of the first section of the flame adjustment range, the limiting part 7 blocks the rotation of the valve core assembly 4; the valve core assembly 4 axially moves up and down to disengage from the limiting part 7 and by rotating the valve core assembly 4, the valve core assembly 4 elastically moves up and down so that the valve core assembly 4 is in the second section of the flame adjustment range.

[0088] A position sensor 10 is provided at the end position of the two-stage firepower adjustment range of the valve body 1 corresponding to the valve core assembly 4. When the valve core assembly 4 is on the rotation trajectory of the two-stage firepower adjustment range and the valve core assembly 4 rotates to the end position of the two-stage firepower adjustment range, the valve core assembly 4 acts on the position sensor 10.

[0089] The central fire delivery channel 2 and the outer ring fire delivery channel 3 are arranged at left and right intervals and are arranged in a vertically staggered manner in the valve body 1. The valve core assembly 4 includes a valve core 6 that rotates around the axis of the valve stem 5; the valve core 6 is provided with a central fire gas channel 8 and an outer ring fire gas channel 9 that are arranged at upper and lower intervals;

[0090] The number of the central fire gas channels 8 and the outer ring fire gas channels 9 is more than two; more than two central fire gas channels 8 and outer ring fire gas channels 9 are arranged in a circumferential distribution on the outer surface of the valve core 6;

[0091] The valve body 1 is provided with an installation cavity 11. The valve core 6 of the valve core assembly 4 is limitedly installed on the installation cavity 11 and is connected to the valve stem 5; the valve stem 5 drives the valve core 6 to rotate in a limited manner in the installation cavity 11;

[0092] An upper cover 12 is provided above the installation cavity 11 of the valve body 1. The valve stem 5 penetrates through the upper cover 12 and is inserted into the installation cavity 11;

[0093] When the valve core assembly 4 is on the rotation trajectory of the first-stage firepower adjustment range, a clamping groove or a clamping rib forming a limiting portion 7 is provided in the upper cover 12; a positioning piece 13 is provided on the valve stem 5, and a matching portion 14 acting on the limiting portion 7 is provided on the positioning piece 13; when the valve stem 5 rotates to the end position of the first-stage firepower adjustment range, the matching portion 14 acts on the limiting portion 7;

[0094] The valve body 1 is provided with a cover plate 16 covering the opening of the installation cavity 11. A position sensor 10 is provided on the cover plate 16, and a contact member 15 is provided on the valve stem 5;

[0095] When the valve core assembly 4 is on the rotation trajectory of the two-stage firepower adjustment range, the contact member 15 rotates with the valve stem 5 to the end position of the two-stage firepower adjustment range, and the contact member 15 acts on the position sensor 10;

[0096] The valve body 1 is provided with an outer ring fire delivery section 19 communicating with the outer ring fire delivery channel 3; the valve body 1 is provided with a switching valve 20 for opening and closing the outer ring fire delivery section 19, and the switching valve 20 is fixed to the outside of the outer ring fire delivery section 19 of the valve body 1 through a connecting member 21;

[0097] The matching portion 14 and the limiting portion 7 form a rotation limiting device;

[0098] In this embodiment, two symmetrical limiting portions 7 are provided inside the upper cover 12, and two symmetrical mating portions 14 are provided on the positioning piece 13. One of the limiting portions 7 corresponds to the 180° rotation position of the valve element assembly 4, and the other limiting portion 7 corresponds to the zero position of the valve element assembly 4, so as to form a zero position limiting device.

[0099] A switching valve 20 for opening and closing the outer ring fire conveying section 19 is provided on the valve body 1, and the switching valve 20 is fixed to the outside of the outer ring fire conveying section 19 of the valve body 1 through a connecting piece 21;

[0100] In this embodiment, the cover plate 16 can be fixed to the valve body 1 by screws, the upper cover 12 is fixed to the cover plate 16 by screws, and the position sensor 10 and the detecting member 17 are respectively fixed to the cover plate 16 by screws.

[0101] In this embodiment, the valve stem 5 penetrates through the cover plate 16.

[0102] The valve element assembly 4 includes a valve stem 5 that is axially elastically movable up and down and rotatable circumferentially on the valve body 1. A detecting member 17 is provided on the valve body 1 corresponding to the downward movement of the valve stem 5. A pressing piece 18 is provided on the valve stem 5. When the valve element assembly 4 rotates to an angle corresponding to the detecting member 17, the valve stem 5 drives the pressing piece 18 to press down and act on the detecting member 17;

[0103] In this embodiment, a compression spring is provided on the valve stem 5.

[0104] In this embodiment, the pressing piece 18 is located below the mating portion 14, the contact member 15 is supported on the cover plate 16, the compression spring is sleeved on the valve stem 5, and the compression spring is located between the pressing piece 18 and the contact member 15, and the contact member 15 is located below the pressing piece 18.

[0105] In this embodiment, a long strip-shaped opening groove 22 is provided on the top of the valve element 6, and a long strip block 23 inserted into the opening groove is provided at the bottom of the valve stem 5. When the valve stem 5 moves axially up and down, the long strip block 23 moves up and down along the opening groove 22. The valve element 6 is limited on the opening groove 22 through the long strip block 23 to drive the valve element 6 to rotate.

[0106] In this embodiment, the connecting piece 21 is fixed to the outer ring fire conveying section 19 by screws.

[0107] In this embodiment, the central fire conveying channel 2 is opened and a central fire gas conveying opening interval 24 communicating with the central fire conveying channel 2 is formed between the central fire conveying channel 2 and the valve element 6;

[0108] In this embodiment, the outer ring fire conveying channel 3 is opened and an outer ring fire gas conveying opening interval 25 communicating with the outer ring fire conveying channel 3 is formed between the outer ring fire conveying channel 3 and the valve element 6.

[0109] See Figure 17, a gas stove, including a stove body 31, and further including the above-mentioned gas valve, the gas valve is arranged on the stove body 31.

[0110] The burner 34 includes a central fire ejector tube 35 and an outer ring fire ejector tube 36. The central fire ejector tube 35 is communicated with the central fire delivery channel 2, and the outer ring fire ejector tube 36 is communicated with the outer ring fire delivery channel 3;

[0111] The gas stove further includes a control device 33. The gas valve includes a switch valve 20 arranged on the valve body 1 and used for opening and closing the outer ring fire delivery channel 3. The switch valve 20 is electrically connected with the control device 33;

[0112] When the burner works, an outer ring fire and a central fire are formed on the burner head 32;

[0113] The stove body 31 is also provided with a control device 33. The gas valve includes a switch valve 20 arranged on the valve body 1 and used for opening and closing the outer ring fire delivery channel 3. The switch valve 20 is electrically connected with the MCU of the control device 33. The control device 33 outputs an electrical signal to the switch valve 20. When the switch valve 20 is in the open state, the outer ring fire delivery channel 3 is opened, and the outer ring fire of the burner head 32 is in the combustion state; when the switch valve 20 is in the closed state, the outer ring fire delivery channel 3 is closed, and the outer ring fire of the burner head 32 is in the extinguished pending state;

[0114] The switch valve 20 is a self-suction valve, a steady-state valve or a solenoid valve.

[0115] In this embodiment, the valve body 1 is provided with a damper adjusting device corresponding to the central fire delivery channel 2 and the outer ring fire delivery channel 3. The air outlet of the damper adjusting device abuts against the air inlet of the ejector tube.

[0116] The above is the preferred solution of the present invention, which shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas valve, characterized in that: It comprises a valve body (1) applied to a stove and provided with a central fire delivery channel (2) and an outer ring fire delivery channel (3), and a valve core assembly (4) rotatably arranged on the valve body (1), wherein the valve core assembly (4) has a zero position and a terminal position; When the valve core assembly (4) is at the zero position, the central fire delivery channel (2) and the outer ring fire delivery channel (3) are closed; When the valve core assembly (4) rotates to the final position, the center fire small vent (26) of the valve core assembly (4) is connected to the center fire delivery channel (2), and the outer ring fire large vent (4) of the valve core assembly (4) is connected to the outer ring fire delivery channel (3), so that the center fire of the stove is in a minimum fire state and the outer ring fire is in a maximum fire state.

2. The gas valve according to claim 1, characterized in that: The valve body (1) is provided with a position sensor (10), and when the valve core assembly (4) rotates to the final position, the position sensor (10) is triggered, so that the position sensor (10) outputs a corresponding electrical signal to the electric control board of the cooker; the valve body (1) is provided with a switch valve (20) for opening and closing the outer ring fire delivery channel (3); The position sensor (10) is a micro switch, and the switch valve (20) is a self-priming valve, a steady-state valve or a solenoid valve.

3. The gas valve according to claim 1, characterized in that: The angle adjustment range of the valve core assembly (4) on the valve body (1) is 0°-X°, 0° is the angle corresponding to the zero position of the valve core assembly (4), X° is the angle corresponding to the final position of the valve core assembly (4), and 200°≤X°≤270°.

4. The gas valve according to claim 3, characterized in that: The X° is one of 220°, 230°, 240°, 250°, 260°, and 270°.

5. The gas valve according to claim 1, characterized in that: A press-type zero position limit device is provided between the valve body (1) and the valve core assembly (4) corresponding to the zero position of the valve core assembly (4); Before the valve core assembly (4) is operated and rotated, the valve core assembly (4) is pressed to move up and down axially and is released from the zero position limit device, and then the valve core assembly (4) starts to rotate from the zero position; A rotation limiting device is provided between the valve body (1) and the valve core assembly (4); The rotation limit device is used to limit the valve core assembly (4) from rotating directly to the final position after starting to rotate from the zero position. When the valve core assembly (4) rotates to 180 degrees, the rotation limit device cooperates with the valve core assembly (4) to prevent the valve core assembly (4) from further rotating to the final position. Alternatively, there is no rotation limit device between the valve body (1) and the valve core assembly (4), and the valve core assembly (4) directly rotates to the final position after starting to rotate from the zero position; The valve core assembly (4) is arranged on the valve body (1) to elastically move axially up and down, and to rotate circumferentially, and the rotation limit device and / or the zero position limit device comprises a limit portion (7) arranged on the valve body (1), and a matching portion (14) arranged on the valve core assembly (4); When the valve core assembly (4) is in the zero position or the valve core assembly (4) is rotated to 180 degrees, the matching portion (14) is limited on the limiting portion (7) to prevent the valve core assembly (4) from rotating; the valve core assembly (4) drives the matching portion (14) to separate from the limiting portion (7) through up and down axial movement.

6. The gas valve according to claim 1, characterized in that: The valve core assembly (4) has an outer ring fire single closed position, and the zero position, the outer ring fire single closed position and the final position correspond to the rotation angles of the valve core assembly (4) increasing in sequence; When the valve core assembly (4) is rotated to the outer ring fire separate closed position, the center fire high vent (27) of the valve core assembly (4) is connected to the center fire delivery channel (2), and the outer ring fire delivery channel (3) is closed, so that the center fire of the stove is in a high fire state and the outer ring fire is in a closed state; The first fire power adjustment range of the valve core assembly (4) is between the zero position and the outer ring fire separate closing position, and the second fire power adjustment range of the valve core assembly (4) is between the outer ring fire separate closing position and the final position. In the second fire power adjustment range, when the valve core assembly (4) rotates from the outer ring fire separate closing position to the final position, the valve core assembly (4) switches from the state where the center fire large ventilation part (27) is connected to the center fire delivery channel (2) to the state where the center fire small ventilation part (26) is connected to the center fire delivery channel (2), so that the center fire of the stove is in the minimum fire state in the second fire power adjustment range. The valve core assembly (4) comprises a valve core (6) which rotates on the valve body (1), and a central fire large vent portion (27) and a central fire small vent portion (26) which are arranged on the valve core (6) in a circumferentially distributed manner; The valve core assembly (4) is at 180 degrees, the center fire high vent (27) is completely connected to the center fire delivery channel (2), and the center fire of the stove is in a high fire state; The valve core assembly (4) is at 230°, the center fire small vent (26) is connected to the center fire delivery channel (2), and the center fire of the stove is in a minimum fire state.

7. The gas valve according to claim 1, characterized in that: The outer ring large fire vent portion comprises a first outer ring large fire vent portion (28) and a second outer ring large fire vent portion (30) arranged on the valve core (6); the valve core assembly (4) further comprises an outer ring small fire vent portion (29) arranged on the valve core (6); the outer ring small fire vent portion (29), the first outer ring large fire vent portion (28) and the second outer ring large fire vent portion (30) are arranged on the valve core (6) in a circumferentially distributed manner; the outer ring small fire vent portion (29) is arranged between the first outer ring large fire vent portion (28) and the second outer ring large fire vent portion (30); When the valve core assembly (4) is at 180°, the outer ring fire of the cooker is closed. 180° is the outer ring fire single closed position; The valve core assembly (4) is at 230 degrees, the second outer ring fire high vent (30) is completely connected to the outer ring fire delivery channel (3), and the outer ring fire of the stove is in a maximum fire state.

8. The gas valve according to claim 1, characterized in that: The central fire delivery channel (2) and the outer ring fire delivery channel (3) are arranged in a left-right interval arrangement and in a staggered arrangement up and down in the valve body (1); the valve core assembly (4) includes a valve core (6) that rotates around the axis of the valve stem (5); The valve body (1) is provided with a mounting cavity (11); the valve core (6) of the valve core assembly (4) is limitedly mounted on the mounting cavity (11) and connected to the valve stem (5); the valve stem (5) drives the valve core (6) to rotate within the mounting cavity (11) in a limited manner; An upper cover (12) is provided above the mounting cavity (11) of the valve body (1), and the valve stem (5) passes through the upper cover (12) and is inserted into the mounting cavity (11); The valve body (1) is provided with a cover plate (16) covering the opening of the installation cavity (11); the cover plate (16) is provided with a position sensor (10); the valve stem (5) is provided with a contact piece (15); when the valve core assembly (4) rotates to the final position, the contact piece (15) contacts the position sensor (10).

9. A gas stove, characterized in that: A gas valve comprising the gas valve according to any one of claims 1 to 8.

10. The gas stove according to claim 9, characterized in that: including a burner (34); The burner (34) comprises a central fire ejector pipe (35) and an outer ring fire ejector pipe (36); the central fire ejector pipe (35) is in communication with the central fire delivery channel (2), and the outer ring fire ejector pipe (36) is in communication with the outer ring fire delivery channel (3); The gas stove further comprises a control device (33); the gas valve comprises a switch valve (20) arranged on the valve body (1) and used for opening and closing the outer ring fire delivery channel (3); the switch valve (20) is electrically connected to the control device (33); The switch valve (20) is a self-priming valve, a steady-state valve or a solenoid valve.

Images