CN113983219A - Segment valve, cooker comprising segment valve and fuel gas control method - Google Patents

Abstract

The invention discloses a segment valve, a cooker comprising the segment valve and a gas control method, wherein the segment valve comprises a gas knob, a low-load gas area and a high-load gas area are sequentially arranged on the segment valve along the rotation direction of the gas knob, and the segment valve also comprises a limiting structure which is arranged corresponding to the gas knob and used for limiting the gas knob to rotate the high-load gas area from the low-load gas area; when the gas knob does non-rotation movement relative to the limiting structure, the limiting structure removes the rotation limitation of the gas knob. The section valve is convenient for users to operate as required, and partition convenience cooking of the users is achieved, so that different user use requirements are met. Meanwhile, the section valve is provided with a limiting structure, so that firepower is increased violently due to misoperation through the limiting structure, and further the control cannot be performed, unexpected consequences are generated, the operation safety and feasibility of the section valve are improved, and the whole cooking process can be carried out safely.

Description

Segment valve, cooker comprising segment valve and fuel gas control method

Technical Field

The invention relates to the technical field of gas cookers, in particular to a segment valve, a cooker comprising the segment valve and a gas control method.

Background

With the development of the cooker industry, the load and the heat efficiency of a gas stove are higher and higher, and the effective heat load during cooking is also higher and higher. However, the actual user does not need such a large load for most of the time of daily cooking, and requires a large amount of fire only in a special place such as a restaurant, for example, in quick-fry cooking. Therefore, in the prior art, most of the gas knobs can achieve high valve body flow only through rotation or light touch. However, if the maximum fire power is not desired, the operator may touch the knob by mistake or rotate the knob unintentionally, or the operator may rotate the knob unintentionally to the maximum to increase the fire power abruptly, which may result in unexpected consequences, such as an uncontrolled scene due to too much fire power.

Disclosure of Invention

The invention aims to overcome the defects that the flow of a valve body is too low and firepower is difficult to control due to misoperation in the prior art, and provides a segment valve, a cooker comprising the segment valve and a fuel gas control method.

The invention solves the technical problems through the following technical scheme:

a segment valve comprises a gas knob, wherein a low-load gas area and a high-load gas area are sequentially arranged on the segment valve along the rotation direction of the gas knob, and the segment valve further comprises a limiting structure which is arranged corresponding to the gas knob and used for limiting the gas knob to rotate from the low-load gas area to the high-load gas area; when the gas knob does non-rotation movement relative to the limiting structure, the limiting structure removes the rotation limitation of the gas knob.

In this scheme, adopt above-mentioned structural style, set up the interval of low-load gas and the interval of high load gas on the section position valve respectively, convenience of customers operates as required, and realizes user's subregion convenience culinary art to satisfy different user demands. Meanwhile, the section valve is provided with a limiting structure, so that firepower is increased violently due to misoperation through the limiting structure, and further the control cannot be performed, unexpected consequences are generated, the operation safety and feasibility of the section valve are improved, and the whole cooking process can be carried out safely.

In addition, the user switches between the cooking mode of ordinary firepower and the cooking mode of big firepower, only needs the user to keep holding the gas knob and operate just can realize, is favorable to reducing the operation degree of difficulty, to the cooking utensils, can make the button on the panel still less, promotes pleasing to the eye.

Preferably, when the gas knob moves relative to the limiting structure in a direction perpendicular to the rotation direction, the limiting structure releases the rotation limitation on the gas knob. The gas knob is controlled to move perpendicular to the rotating direction, so that the operation of a user is more refute, and the control difficulty of the user when the user consciously switches from a low-load gas interval to a high-load gas interval is reduced. Therefore, the operation scheme can better meet different requirements of users, and the firepower is easy to control.

Preferably, when the gas knob rotates in the direction away from the low-load gas section in the high-load gas section, the gas output flow of the segment valve changes from low to high, so that potential safety hazards caused by suddenly increased firepower are avoided.

Preferably, the maximum output flow of the gas knob in the high-load gas interval is greater than the maximum output flow of the gas knob in the low-load gas interval. The gas output quantity of the section valve is more in line with the daily cooking requirement of a user when the knob is positioned in a low-load gas range.

Preferably, when the gas knob is between the low-load gas range and the high-load gas range, the outer ring gas output flow of the segment valve is lower than the inner ring gas output flow.

Preferably, when the gas knob is between the low-load gas range and the high-load gas range, the outer ring gas output flow of the segment valve is 0. The structure is arranged, so that when the knob rotates to a position between a low-load gas range and a high-load gas range, the outer ring of the combustor connected with the section valve is extinguished, and the flame distribution habit of a user in daily operation is matched.

Preferably, the segment valve further includes a valve body and a switch shaft, the switch shaft is mounted on the valve body, the surface of the switch shaft extends outwards to form a valve rod along the axial direction not facing the switch shaft, the valve body includes a rotation limiting surface, the axial direction of the rotation limiting surface coincides with the axial direction of the switch shaft, and the valve rod abuts against the rotation limiting surface.

Preferably, the gas knob is connected with the switch shaft and is located at one end of the switch shaft close to the rotation limiting surface. The gas knob is on the top of switch axle, and this top is outdoor user operation control's one end, is about to install the gas knob on the top of switch axle, and the user can be better operation gas knob.

Preferably, the rotation limiting surface faces a direction away from the gas knob, the segment valve further comprises an elastic member, one end of the elastic member abuts against the switch shaft, and the elastic member is used for applying acting force to the switch shaft along the axis direction of the valve rod so that the valve rod is kept in contact with the rotation limiting surface. Under normal natural state, the switch shaft can be in the state of vertical decurrent, so set up the elastic component between switch shaft and gas knob, can make the whole high-order state that keeps of switch shaft to this makes valve rod and rotatory spacing face contact always, realizes that the gas knob passes through rotatory switch shaft, and the switch shaft drives the valve rod and makes the motion of perpendicular to switch shaft circumferential direction on rotatory spacing face, makes the valve rod rotatory at the gas interval of the difference on rotatory spacing face, controls the firepower size promptly with this output different valve body flow.

Preferably, the limiting structure comprises a limiting groove, and the limiting groove is arranged on the rotary limiting surface and used for accommodating the valve rod along the axial direction of the valve rod. The limiting groove accommodates the valve rod, so that the rotation of the valve rod on the rotary limiting surface can be controlled through non-rotary motion, and the unexpected result caused by the fierce increase of firepower due to misoperation is avoided.

Preferably, when the gas knob is in an initial state, the valve rod and the limiting groove are symmetrical on the rotation limiting surface about the switch axis.

Preferably, when the gas knob is in an initial state, the valve rod and the limiting groove separate the low-load gas section and the high-load gas section on the rotation limiting surface. When the gas knob is in an initial state, the valve rod and the limiting groove form a straight line passing through the switch shaft, and the rotary limiting surface is divided into two sections with similar areas, namely a low-load gas section and a high-load gas section are separated more obviously.

Preferably, the rotation limiting surface is provided with a first protrusion and a second protrusion, the first protrusion is located in the low-load gas area, and the second protrusion is located in the high-load gas area. Set up the arch on the gas interval of difference, through the motion of valve rod on the arch for the user produces the gear sense at rotatory knob in-process, controls different firepower size in different intervals with this control.

Preferably, the highest height of the second protrusion relative to the rotation-limiting surface is equal to the highest height of the first protrusion relative to the rotation-limiting surface.

Preferably, the valve stem is cylindrical in shape. The cylinder can be more convenient for the valve rod to rotate on the rotation limiting surface.

Preferably, the second protrusion has a protrusion height with respect to the rotation-restricting surface that is greater than the diameter of the valve stem. When the valve rod rotates to a high-load gas interval from the first bulge in the low-load gas interval, the valve rod passes through the limiting groove, the valve rod is arranged in the limiting groove, and the second bulge is arranged in the high-load gas interval, so that the highest height of the second bulge relative to the rotating limiting surface is larger than the diameter of the valve rod, the limiting groove can be used for better clamping the valve rod, and the phenomenon that firepower is increased violently due to misoperation is avoided.

Preferably, the first protrusion has a slope section, the slope section includes a highest end and a lowest end, an end close to the limiting groove is the lowest end, and an end far away from the limiting groove is the highest end. Set first arch to slope section, and the one end that is close to the spacing groove is the least significant end, can realize that the valve rod rotates the protruding process spacing groove of second on first arch, can this better rotation advance the spacing groove, avoid first arch highly too high for rotatory spacing face, damage and produce the sound that abnormal operation can send when leading to the valve rod to pass through the spacing groove, and the life of reinforcing valve rod. And set first arch to the slope section, be equipped with a plurality of little recesses on the slope section, a plurality of little recess intervals set up, and the degree of depth of every recess is the same, then along with the height reduction of the spacing face of slope relative rotation on the highest end to the lowest end of slope section, the lowest end of its recess also is close rotatory spacing face gradually, the purpose of setting up these recesses is when rotatory gas knob, the gas knob and then drive the valve rod rotatory on first arch, when the recess, realize the gear and feel, and then improve user's operation and feel. And when the valve rod rotates on the first bulge, the gas knob rotates to different angles in a low-load gas interval through rotation, and different firepower is generated.

Preferably, the height of the lowest end relative to the fall of the rotation limiting surface is smaller than the radius of the valve rod.

Preferably, the lowermost end is an arc-shaped curved surface, and the arc-shaped curved surface of the lowermost end and the arc-shaped curved surface of the valve rod are matched. The lowest end of the slope section is arranged in the structural form, so that the valve rod can be better rotated into the limiting groove.

Preferably, the section valve still includes the shift fork, the shift fork is located the epaxial one end of keeping away from of switch the gas knob, there is the valve body between shift fork and the switch shaft and reserves the clearance.

Preferably, the valve body reserved gap is larger than the highest height of the second protrusion relative to the rotation limiting surface. As described above, when the valve rod is rotated on the protrusion of the rotary limiting surface, the valve rod is required to be rotated on the protrusion through the operation of the axial direction of the switch shaft, so when the gas knob is operated on the axial direction of the switch shaft, the switch shaft is driven to move along the axial direction, so the switch shaft can be close to the shifting fork, when the valve rod is required to rotate out of the limiting groove to the second protrusion, the distance between the shifting fork and the switch shaft, namely the valve body reserved gap, is larger than the highest height of the second protrusion relative to the rotary limiting surface, so as to ensure that the switch shaft can not contact with the shifting fork, the shifting fork is connected with the electromagnetic valve, namely, the switch shaft is ensured not to jack the shifting fork to stop working of the electromagnetic valve.

A hob including a segment valve as described above.

This cooking utensils through setting up this section position valve for only set up a gas knob on the panel of cooking utensils, just can satisfy the user and switch between the culinary art mode of ordinary firepower and the culinary art mode of big firepower under the prerequisite of guaranteeing safety, consequently, the control button quantity on the cooking utensils panel can reduce, promotes product aesthetic measure.

A gas control method for controlling a gas flow rate by rotating a gas knob, the gas control method comprising: along the rotating direction of the gas knob, a high-load low-gas interval is arranged at the tail end of a low-load gas interval of the gas knob; the gas knob rotates from a low-load gas interval to a high-load low-gas interval, and is limited, and the limitation is unlocked through non-rotation movement of the gas knob.

According to the gas control method, under the condition that a user adjusts gas flow by rotating the gas knob, a low-load gas interval and a high-load gas interval are set, the user can operate the gas control method as required, and the partitioned convenient cooking of the user is realized, so that different user use requirements are met. Meanwhile, a user can only turn from a low-load gas range to a high-load gas range by non-rotating movement of the control knob, so that the phenomenon that firepower is increased violently due to misoperation and cannot be controlled to generate unexpected results is avoided, the operation safety and feasibility of the cooking device are improved, and the whole cooking process can be carried out safely.

In addition, the user switches between the low-load gas range and the high-load gas range, and the user only needs to hold the gas knob to operate, so that the operation difficulty is reduced, the number of buttons on the panel can be reduced for the cooker adopting the gas control method, and the attractiveness is improved.

The positive progress effects of the invention are as follows: this section position valve is equipped with between the low-load gas interval and the high-load gas interval respectively, and convenience of customers operates as required, and realizes user's subregion convenience culinary art to satisfy different user demands. Meanwhile, the section valve is provided with a limiting structure, so that firepower is increased violently due to misoperation through the limiting structure, and further the control cannot be performed, unexpected consequences are generated, the operation safety and feasibility of the section valve are improved, and the whole cooking process can be carried out safely.

Drawings

Fig. 1 is a schematic top view of a segment valve according to embodiment 1 of the present invention.

Fig. 2 is a schematic view of the overall structure of a segment valve according to embodiment 2 of the present invention.

Fig. 3 is a schematic perspective view of a segment valve according to embodiment 2 of the present invention.

Fig. 4 is a schematic structural view of a rotation-limiting surface according to embodiment 2 of the present invention.

Fig. 5 is a schematic structural view of a rotation-restricting surface and a switch shaft according to embodiment 2 of the present invention.

Fig. 6 is a partially enlarged schematic view of a portion a in fig. 5.

Description of reference numerals:

segment valve 1

Valve body 2

Gas knob 3

Switch shaft 4

Valve rod 5

Rotation limiting surface 6

Low load gas interval 7

First projection 71

Ramp segment 711

Highest end 7111

Lowest end 7112

High load gas interval 8

Second projection 81

Shifting fork 9

Valve body reserved gap 91

Limiting groove 10

Electromagnetic valve 11

Detailed Description

The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.

Example 1

Referring to fig. 1, the present embodiment provides a stage valve 1 and a cooking stove using the stage valve 1 to control cooking power. Wherein, section position valve 1 includes gas knob 3, and at the direction of rotation along gas knob 3, section position valve 1 is gone up and is had between 7 and the high load gas interval 8 of low-load gas in proper order, and when gas knob 3 rotated and was in between 7 of low-load gas, the gas flow that section position valve 1 can be exported was less relatively, and when gas knob 3 rotated and was in between 8 of high load gas, the gas flow that section position valve 1 can export was great relatively.

In this embodiment, when the rotation angle of the gas knob 3 is 0 ° to 240 °, the gas knob 3 is located in the low-load gas range 7, specifically, when the gas knob 3 rotates from 0 °, the flow output by the stage valve 1 gradually increases from 0, reaches the maximum 4.5KW at 90 °, then gradually decreases, and reaches the minimum 400W at 240 ° (for example, the output flow is 0), so as to match the gas manipulation habit of the user during the conventional cooking. When gas knob 3 begins to be restarted, the gas flow size that produces in the twinkling of an eye that pushes down is 400W, when the rotation angle of gas knob 3 is at 240 ~ 275 deg, gas knob 3 is located high load gas interval 8, the output flow size of gas knob 3 when from 240 deg is 500W, gas knob 3 continues to rotate, when it rotates to 275 deg, the output flow has reached the biggest 5.2KW, can realize the function of "one key explodes the stir-fry" in high load gas interval, in order to satisfy different users' different demands. (the specific values of the interval size and the output gas flow rate size in this embodiment are variable, and are specific to the specific situation.)

In addition, still include limit structure on the stage valve 1, this limit structure is located between 180 ~ 200, and limit structure corresponds the gas knob 3 setting, and this limit structure's effect lies in restricting the gas knob 3 and rotates the interval 8 of high load gas from the interval 7 of low load gas, and limit structure's structure should be set up as: only when the gas knob 3 does non-rotational movement relative to the limit structure, the limit structure can remove the rotation limitation of the gas knob 3, so that the gas knob 3 can smoothly rotate from the low-load gas section 7 to the high-load gas section 8. Through set up the interval 7 of low-load gas and the interval 8 of high-load gas on this section position valve 1 respectively, convenience of customers is operated as required through the mode of rotatory gas knob, realizes user's subregion convenience culinary art to satisfy different user demands. Meanwhile, the segment valve 1 is provided with a limiting structure, so that a user cannot switch from a low-load gas range 7 to a high-load gas range 8 through simple rotating operation, and the situation that firepower is increased violently and cannot be controlled due to misoperation when the user rotates a knob and the unexpected result is generated is avoided through the limiting structure. Therefore, the structure of the section valve is convenient for a user to simply operate to control cooking firepower, the operation safety and the feasibility of the section valve can be improved, and the whole cooking process is ensured to be carried out in a safe state.

In addition, the user switches between the cooking mode of ordinary firepower and the cooking mode of big firepower, only needs the user to keep holding gas knob 3 and operate just can realize, is favorable to reducing the operation degree of difficulty, to the cooking utensils, can make the button on the panel less, promotes pleasing to the eye.

The specific structural arrangement of the above-mentioned limit structure can be realized by adopting the related structural arrangement scheme existing in the prior art, for example, a sensor is arranged to detect the movement state of the gas knob 3 between the low-load gas section 7 and the high-load gas section 8, and only when the gas knob 3 performs non-rotation operation (such as up-translation, down-translation, and the like) at the position, the sensor generates a signal to release the limit on the gas knob 3, so that the gas knob 3 can be smoothly rotated into the high-load gas section 8.

In all the categories of "non-rotational operation", it is relatively preferable for the gas knob 3 to move in a direction perpendicular to the rotational direction, and for example, the gas knob 3 is pushed or pulled to release the rotational restriction of the gas knob 3 by the stopper structure. The motion vertical to the rotation direction is more convenient for the user to implement, can better meet different requirements of the user, and is easy to control the fire power.

In the present embodiment, the description of the gas output of the stepped valve 1 in the low-load gas range 7 and the high-load gas range 8 of the gas knob 3 is only an example. That is, when the gas knob 3 is in the low-load gas range 7, the highest gas flow rate that can be output by the stage valve 1 is a, and when the gas knob 3 is in the high-load gas range 8, the highest gas flow rate that can be output by the stage valve 1 is B, and for achieving the above purpose, B > a is only required.

Example 2

The present embodiment further provides a segment valve and a cooker using the segment valve to control cooking fire, wherein the structure of the segment valve is substantially the same as that of the segment valve provided in embodiment 1, except that a preferred structural arrangement scheme of a limiting structure of the segment valve is provided in this embodiment: as shown in fig. 2 to 6, the limiting structure in this embodiment is configured as follows: only when the gas knob 3 is pressed relative to the limiting structure, the limiting structure can be contacted to limit the rotation of the gas knob 3.

Specifically, when the gas knob 3 rotates in the direction away from the low-load gas section 7 in the high-load gas section 8, the gas output flow of the staged valve 1 changes from low to high. The low-load gas section 7 and the high-load gas section 8 are arranged on the segment valve 1, so that different valve bodies 2 can be adopted to output flow in different sections, namely different firepower is controlled.

Specifically, the maximum output flow of the gas knob 3 in the high-load gas section 8 is greater than the maximum output flow of the gas knob 3 in the low-load gas section 7. Different fire control is realized in different sections, and the required fire can be better controlled within a clear output flow range.

Specifically, when the gas knob 3 is between the low-load gas range 7 and the high-load gas range 8, the outer ring gas output flow of the segment valve 1 is lower than the inner ring gas output flow. When the gas knob 3 is between the low-load gas section 7 and the high-load gas section 8, the outer ring gas output flow of the segment valve 1 is 0.

As shown in fig. 2, segment valve 1 still includes valve body 2 and switch shaft 4, switch shaft 4 installs on valve body 2, switch shaft 4 is located the center axis that runs through whole valve body 2, along the axis direction that does not towards switch shaft 4, specifically be in this embodiment outside extension in the ascending surface in the radial direction of switch shaft 4 forms valve rod 5, valve body 2 still includes rotatory spacing face 6, when following up looking up whole valve body 2, can observe rotatory spacing face 6, rotatory spacing face 6 is circular mostly, so the axis direction of its centre of a circle of rotatory spacing face 6 and the coincidence of the axis direction of switch shaft 4, valve rod 5 supports on rotatory spacing face 6. The gas knob 3 is connected with the switch shaft 4, and the gas knob 3 is located the switch shaft 4 and is close to the one end of rotatory spacing face 6, from last down overlook whole valve body 2 time, can observe to obtain the gas knob 3 but can't see rotatory spacing face 6. Switch shaft 4 runs through valve body 2, is equipped with gas knob 3 on the up portion face of valve body 2, and gas knob 3 is on switch shaft 4's up portion face, and gas knob 3 is on switch shaft 4's top, and this top is outdoor user operation control's one end, is about to install gas knob 3 on switch shaft 4's top, operation gas knob 3 that the user can be better. The specific implementation manner is as follows: the user is through the gas knob 3 of manipulating the upper portion face of rotary valve body 2, and gas knob 3 and then drives the rotation of switch shaft 4, and switch shaft 4 drives the rotation of valve rod 5 on rotatory spacing face 6 again, makes valve rod 5 be located different gas intervals, then and then adjusts and control different firepower sizes.

Specifically, the rotation limiting surface 6 is arranged in a direction departing from the gas knob 3, and under normal conditions, any part is in a vertically downward state, so the segment valve 1 further comprises an elastic member (not shown in the figure), one end of the elastic member abuts against the switch shaft 4, and the elastic member is used for applying acting force to the switch shaft 4 along the axial direction of the valve rod 5, so that the valve rod 5 is kept in full contact with the rotation limiting surface 6. The elastic component is located the inside of ooff axle 4 and gas knob 3, so set up the elastic component between ooff axle 4 and gas knob 3, can make 4 whole high-order states of ooff axle that keep, so that valve rod 5 and rotatory spacing face 6 contact always, realize that gas knob 3 passes through rotary switch axle 4, as mentioned above, ooff axle 4 drives valve rod 5 and is the motion of perpendicular to 4 circumferential direction of ooff axle on rotatory spacing face 6, make the valve rod 5 the interval rotations of the gas of difference on rotatory spacing face 6, 2 flows of the different valve body of output with this are control the firepower size promptly.

As shown in fig. 4-6, the limiting structure (not shown) includes a limiting groove 10, the limiting groove 10 is disposed in the region where the limiting structure is located, and the limiting groove 10 is disposed on the rotation limiting surface 6 and is used for accommodating the valve rod 5 along the axial direction of the valve rod 5. The limiting groove 10 is positioned on the surface of the rotation limiting surface 6, so that the gas knob 3 can be limited by contacting the limiting structure during pressing operation. The limiting groove 10 is used for accommodating the valve rod 5, so that the valve rod 5 can be controlled to directly rotate on the rotation limiting surface 6 through pressing operation, and unexpected consequences caused by strong fire increase due to misoperation are avoided.

Specifically, when the gas knob 3 is in an initial state, that is, the valve rod 5 is located at 0 ° of the rotation limiting surface 6, the valve rod 5 and the limiting groove 10 are symmetrical on the rotation limiting surface 6 about the switch shaft 4, and the three form a straight line, and in other embodiments, the positions of the valve rod 5, the switch shaft 4 and the limiting groove 10 may be set according to the layout structure of different gas intervals on the rotation limiting surface 6 without adopting a symmetrical form. When the gas knob 3 is in an initial state, the valve rod 5 and the limiting groove 10 separate a low-load gas section 7 from a high-load gas section 8 on the rotary limiting surface 6, so that the layout mechanism of the high-load gas section 8 and the low-load gas section 7 is more obvious, the operation is convenient, and the situation that the valve rod 5 is positioned in the wrong gas section due to slight error when the gas knob 3 is rotated due to too close of the low-load gas section 7 and the high-load gas section 8 is avoided.

As shown in fig. 4 to 6, the rotation-restricting surface 6 is provided with a first protrusion 71 and a second protrusion 81, the first protrusion 71 is located in the low-load gas range 7, and the second protrusion 81 is located in the high-load gas range 8. When the integral segment valve 1 is viewed, the downward protruding protrusions are formed on the surface of the rotation limiting surface 6, and are divided into different protrusions, namely the first protrusion 71 and the second protrusion 81, in different sections, as described above, the first protrusion 71 and the second protrusion 81 form the limiting groove 10 on the rotation limiting surface 6 corresponding to the valve rod 5 and the switch shaft 4, so that the smoothness and the integrity of the rotation limiting surface 6 are maintained, and no other recessed structures exist, and in this embodiment, the gas knob 3 needs to be rotated and pressed to control the rotation of the valve rod 5 on the rotation limiting surface 6. Set up the arch on the gas interval of difference, drive the motion of valve rod 5 on the arch through gas knob 3 to this control controls different firepower sizes in different intervals.

Specifically, the highest height of the second projection 81 with respect to the rotation-restricting surface 6 is equal to the highest height of the first projection 71 with respect to the rotation-restricting surface 6. The valve stem 5 may be cylindrical or spherical in shape.

As shown in fig. 4, the second projection 81 has a projection height with respect to the rotation restricting surface 6 larger than the diameter of the valve stem 5. When the valve rod 5 is rotated to the high-load gas interval 8 from the first protrusion 71 of the low-load gas interval 7, the valve rod 5 passes through the limiting groove 10, the valve rod 5 is arranged in the limiting groove 10, and the second protrusion 81 is arranged on the high-load gas interval 8, so that the highest height of the second protrusion 81 relative to the rotation limiting surface 6 is larger than the diameter of the valve rod 5, the limiting groove 10 can be used for better clamping the valve rod 5, when the gas knob 3 is rotated to the high-load gas interval 8, the gas knob 3 needs to be pressed to rotate the valve rod 5 out of the limiting groove 10 to the high-load gas interval 8, and the phenomenon that firepower is increased due to operation errors is avoided.

As shown in fig. 6, the first protrusion 71 has a slope section 711, the slope section 711 includes a highest end 7111 and a lowest end 7112, one end close to the limiting groove 10 is the lowest end 7112, and one end far away from the limiting groove 10 is the highest end 7111, that is, the first protrusion 71 gradually decreases in slope from the initial position of the valve rod 5 to the limiting groove 10; set first arch 71 to slope section 711, and the drop height of lower extreme 7112 for rotatory spacing face 6 is less than valve rod 5's radius, and lower extreme 7112 is an arc curved surface, the arc curved surface of lower extreme 7112 and valve rod 5's arc curved surface suit, spacing groove 10 is advanced in the rotation that can be better, avoid first arch 71 highly too high for rotatory spacing face 6, damage and send the sound that abnormal operation can produce when leading to valve rod 5 to pass through spacing groove 10, and the life of reinforcing valve rod 5. As shown in fig. 6, the first protrusion 71 is set as a slope section 711, a plurality of small grooves (not marked in the drawing) are arranged on the slope section 711, the small grooves are arranged at intervals, and the depth of each groove is the same, so that the height of the limiting surface 6 relatively rotating along with the slope from the highest end 7111 to the lowest end 7112 of the slope section 711 is reduced, the lowest end of the groove is also gradually close to the rotating limiting surface 6, the purpose of setting the grooves is that when the gas knob 3 is rotated, the gas knob 3 further drives the valve rod 5 to rotate on the first protrusion 71, and when the grooves pass through, gear feeling is realized, and further, the operation hand feeling of a user is improved. When the valve rod 5 rotates on the first protrusion 71, the gas knob 3 rotates to rotate to different angles in the low-load gas section 7, and different fire power is generated, that is, as described above, when the gas knob 3 rotates from 0 °, the flow output by the stage valve 1 gradually increases from 0, reaches the maximum value at 90 °, then gradually decreases, and reaches the minimum value at 240 °.

As shown in fig. 2, the segment position valve 1 further comprises a shifting fork 9, the shifting fork 9 is located at one end of the switch shaft 4 far away from the gas knob 3, and a valve body reserved gap 91 is formed between the shifting fork 9 and the switch shaft 4; the valve body allowance clearance 91 is larger than the highest height of the second projection 81 with respect to the rotation restricting surface 6. As described above, when the valve rod 5 is rotated on the first projection 71 and the second projection 81 of the rotation restricting surface 6, the valve rod 5 needs to be rotated thereon by the operation of the axial direction of the switch shaft 4, so that when the gas knob 3 is operated in the axial direction of the switch shaft 4, that is, when the gas knob 3 is pressed in a pressing operation manner, the valve rod 5 is pressed on the first projection 71 by pressing the gas knob 3, the switch shaft 4 is also moved in the axial direction when the gas knob 3 is pressed, so that the switch shaft 4 approaches the fork 9, and when the gas knob 3 is rotated to the high-load gas range 8 again, the valve rod 5 needs to be rotated out of the restricting groove 10 onto the second projection 81, so that the switch shaft 4 approaches the fork 9 for the second time, and therefore, the distance between the fork 9 and the switch shaft 4, that is, the valve body clearance 91, is larger than the highest height of the second projection 81 with respect to the rotation restricting surface 6, with this assurance make switch shaft 4 can not contact shift fork 9 when pressing rotatory gas knob 3, and shift fork 9 is connected with solenoid valve 11 again, guarantee switch shaft 4 promptly and can not back open shift fork 9, and lead to solenoid valve 11 stop work, or produce the gas and leak.

In addition, the embodiment further provides a gas control method, specifically, the gas flow is controlled by rotating the gas knob 3, and the gas control method specifically includes: along the rotating direction of the gas knob 3, a high-load low-gas interval is arranged at the tail end of a low-load gas interval 7 of the gas knob 3; the gas knob 3 is limited when rotating from the low-load gas area 7 to the high-load low-gas area, and the limitation is unlocked through non-rotation movement of the gas knob 3, so that the gas knob can rotate from the low-load gas area to the high-load low-gas area.

The control method can be implemented as follows: when the valve rod 5 is installed in the radial direction of the switch shaft 4 in the first direction of the rotation-limiting surface 6, the first protrusion 71 is located in a section rotated clockwise by 180 ° from the first direction to the first direction, the second protrusion 81 is located in a section rotated clockwise by 200 ° from the first direction to 275 ° from the first direction, and the limiting groove 10 is located in a section rotated clockwise by 180 ° from the first direction to 200 ° from the clockwise, between the first protrusion 71 and the second protrusion 81. The gas knob 3 is rotated clockwise, the valve rod 5 is driven to rotate on the first bulge 71, the valve rod 5 passes through the low-load gas interval 7, when the valve rod is rotated to 180 degrees clockwise in the first direction, the valve rod 5 is arranged in the limiting groove 10, the valve rod 5 is enabled to leave the limiting groove 10 between the low-load gas interval 7 and the high-load low-load gas interval by pressing the rotating gas knob 3 and other operation modes, the gas knob 3 is further rotated continuously, the valve rod 5 is driven to rotate on the second bulge 81 from 200 degrees clockwise rotating in the first direction to 275 degrees clockwise, and the valve rod 5 is moved to the high-load gas interval 8, so that the gas output quantity is switched to a higher level, and the fire requirements of users on quick-frying and other cooking are met.

The angle of the gas knob 3 corresponding to the operation method of this embodiment is limited to this embodiment, and the specific rotation angle may be specifically set according to the specific layout structures of the low-load gas interval 7, the high-load gas interval 8 and the limiting structure.

Example 3

The present embodiment further provides a segment valve and a cooker using the segment valve to control cooking fire, wherein the structure of the segment valve is substantially the same as that of the segment valve provided in embodiment 2, except that a preferred structural arrangement scheme of a limiting structure of the segment valve is provided in this embodiment: as shown in fig. 1-2, the limiting structure in this embodiment is configured as follows: only when the gas knob is lifted relative to the limiting structure, the gas knob can be contacted with the limiting structure to limit the rotation of the gas knob.

Specifically, limit structure includes the spacing groove, and the interval at limit structure place is provided with the spacing groove, and the spacing groove sets up on rotatory spacing face for the axis direction along the valve rod holds the valve rod. The limiting structure is sunken on the rotary limiting surface, namely, the limiting groove cannot be seen when the segment valve is viewed rightly. Set up the spacing groove and be used for holding the valve rod, alright through pressing the rotation of operation control valve rod directness on rotatory spacing face, avoided leading to the firepower to increase suddenly because of misoperation, produce the result that is difficult to expect.

Specifically, the first protrusion and the second protrusion on the rotation limiting surface are in the following structural forms: when the segment valve is overall viewed, any other structure on the rotary limiting surface cannot be seen, namely, the formed first bulge and the second bulge are arranged in the rotary limiting surface in a concave mode, and the first bulge and the second bulge form a limiting groove relative to the switch shaft and corresponding to the valve rod, so that no other redundant structure exists on the rotary limiting surface, and the segment valve has the advantage of saving the space of the segment valve. This embodiment requires a rotary pull gas knob to rotate the commanding stem on the rotation limiting surface. Set up the arch on the gas interval of difference, drive the motion of valve rod on the arch through the gas knob to this control is in different firepower sizes of interval control of difference.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.

Claims (23)

1. A segment valve comprises a gas knob and is characterized in that a low-load gas interval and a high-load gas interval are sequentially arranged on the segment valve along the rotation direction of the gas knob,

the segment valve also comprises a limiting structure, the limiting structure is arranged corresponding to the gas knob and is used for limiting the gas knob to rotate from the low-load gas interval to the high-load gas interval;

when the gas knob does non-rotation movement relative to the limiting structure, the limiting structure removes the rotation limitation of the gas knob.

2. The staged valve as defined in claim 1, wherein the stop structure releases the rotational restriction of the gas knob when the gas knob moves relative to the stop structure in a direction perpendicular to the rotational direction.

3. The staged valve as defined in claim 1, wherein when said gas knob is rotated in a direction away from said low load gas section within said high load gas section, the gas output flow of said staged valve changes from low to high.

4. The segment valve of claim 3, wherein a maximum output flow of the gas knob in the high load gas interval is greater than a maximum output flow of the gas knob in the low load gas interval.

5. The staged valve as defined in claim 1, wherein when said gas knob is between said low load gas section and said high load gas section, an outer ring gas output flow rate of said staged valve is lower than an inner ring gas output flow rate.

6. The staged valve as defined in claim 5, wherein when said gas knob is between said low load gas section and said high load gas section, an outer ring gas output flow of said staged valve is 0.

7. The staged valve as defined in claim 1, wherein the staged valve further comprises a valve body and a switching shaft,

the switch shaft is arranged on the valve body,

a valve rod is formed by extending outwards on the surface of the switch shaft along the axial direction which is not towards the switch shaft,

the valve body comprises a rotary limiting surface, the axial direction of the rotary limiting surface is overlapped with the axial direction of the switch shaft, and the valve rod is abutted against the rotary limiting surface.

8. The staged valve as defined in claim 7, wherein the gas knob is coupled to the switch shaft at an end of the switch shaft adjacent to the rotation limiting surface.

9. The segment position valve according to claim 7, wherein the rotation limiting surface is disposed in a direction away from the gas knob, the segment position valve further comprises an elastic member, one end of the elastic member abuts against the switch shaft, and the elastic member is configured to apply an acting force to the switch shaft along an axial direction of the valve stem, so that the valve stem is kept in contact with the rotation limiting surface.

10. The staged valve as defined in claim 7, wherein the stop structure comprises a stop groove disposed on the rotational stop surface for receiving the valve stem in an axial direction of the valve stem.

11. The staged valve as defined in claim 10, wherein, when the gas knob is in the initial state, the valve stem and the retainer groove are symmetrical about the switch axis on the rotation-retaining surface.

12. The staged valve as defined in claim 11, wherein when said gas knob is in the initial state, said valve stem and said retainer groove separate said low load gas section from said high load gas section on said rotation retainer surface.

13. The staged valve as defined in claim 7, wherein a first protrusion and a second protrusion are provided on said rotation-limiting surface, said first protrusion is located in said low-load gas range, and said second protrusion is located in said high-load gas range.

14. The staged valve as defined in claim 13, wherein a maximum height of the second projection relative to the rotation limiting surface is equal to a maximum height of the first projection relative to the rotation limiting surface.

15. The staged valve as defined in claim 7, wherein the valve stem is cylindrical in shape.

16. The staged valve as defined in claim 13, wherein the second projection has a projection height relative to the rotation stop surface that is greater than the diameter of the valve stem.

17. The staged valve as defined in claim 13, wherein the first projection has a ramp section, the ramp section including a lowermost end and a lowermost end, the lowermost end being located at an end adjacent to the retainer groove, and the uppermost end being located at an end remote from the retainer groove.

18. The staged valve as defined in claim 17, wherein the lowermost end has a drop height relative to the rotation-limiting surface that is less than the radius of the valve stem.

19. The segment valve of claim 18 wherein the lowermost end has an arcuate surface, the arcuate surface of the lowermost end conforming to the arcuate surface of the valve stem.

20. The segment valve of claim 1, further comprising a shifting fork, wherein the shifting fork is located at one end of the switch shaft far away from the gas knob, and a valve body reserved gap exists between the shifting fork and the switch shaft.

21. The staged valve as defined in claim 20, wherein the valve body clearance gap is greater than the maximum height of the second projection relative to the rotation limiting surface.

22. A hob, characterized in that it comprises a segment valve according to any one of the claims 1 to 21.

23. A gas control method for controlling gas flow by rotating a gas knob, the gas control method comprising:

along the rotating direction of the gas knob, a high-load low-gas interval is arranged at the tail end of a low-load gas interval of the gas knob;

the gas knob rotates from a low-load gas interval to a high-load low-gas interval, and is limited, and the limitation is unlocked through non-rotation movement of the gas knob.

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