CN214172314U - Kitchen range - Google Patents

Abstract

The utility model provides a cooking stove. The cooking utensils include: the burner comprises a burner body, the burner body is provided with a large-fire gas cavity, a small-fire gas cavity and a limit small-fire gas cavity, the burner also comprises a large-fire injection pipe, a small-fire injection pipe and a limit small-fire injection pipe which are connected to the burner body, the large-fire injection pipe is communicated to the large-fire gas cavity, the small-fire injection pipe is communicated to the small-fire gas cavity, and the limit small-fire injection pipe is communicated to the limit small-fire gas cavity; and the fire cover assembly covers the furnace end main body, forms a big fire gas channel with the big fire gas cavity, forms a small fire gas channel with the small fire gas cavity, and forms a limit small fire gas channel with the limit small fire gas cavity. The utility model discloses draw in big fire to penetrate the pipe and big fire gas chamber and the small fire draws to penetrate outside pipe and the small fire gas chamber of drawing, set up the limit small fire again on the furnace end and draw and penetrate pipe and limit small fire gas chamber to alright with supply with very little gas, thereby can support the limit small fire.

Description

Kitchen range

Technical Field

The utility model relates to a kitchen utensil's technical field specifically relates to a cooking utensils.

Background

In recent years, with the improvement of living standard of people, cookers with intelligent functions are more and more popular with users.

In the cooking process, when a user removes a pot from the cooker and then cleans the pot or holds dishes, the cooker is always in a large thermal load state. This results in energy waste and reduced safety of the cookers. In order to avoid energy waste, a user can manually turn down the fire of the cooker before moving away the cooker, for example, a valve body assembly arranged on a gas transmission pipeline on the cooker is controlled to reduce gas transmission amount, so that the fire is reduced; or a pot-leaving detection device is arranged on the stove and is electrically connected with a controller inside the stove. When a user moves the cooker away from the cooker, the cooker-leaving detection device can collect and send a cooker-leaving signal, and the controller controls the cooker to reduce firepower.

However, even if the fire power of the cooker is adjusted to be small, the magnitude of the fire power itself is the fire power for cooking. Therefore, the firepower of the cooker is relatively large when the cooker is away from the cooker, so that energy is still wasted to a certain extent, and the safety of the cooker is still low.

SUMMERY OF THE UTILITY MODEL

In order to at least partially solve the problems existing in the prior art, the utility model provides a cooker. The cooking utensils include: the burner comprises a burner body, the burner body is provided with a large-fire gas cavity, a small-fire gas cavity and a limit small-fire gas cavity, the burner also comprises a large-fire injection pipe, a small-fire injection pipe and a limit small-fire injection pipe which are connected to the burner body, the large-fire injection pipe is communicated to the large-fire gas cavity, the small-fire injection pipe is communicated to the small-fire gas cavity, and the limit small-fire injection pipe is communicated to the limit small-fire gas cavity; and the fire cover assembly covers the furnace end main body, forms a big fire gas channel with the big fire gas cavity, forms a small fire gas channel with the small fire gas cavity, and forms a limit small fire gas channel with the limit small fire gas cavity.

The utility model discloses draw in big fire to penetrate the pipe and big fire gas chamber and the small fire draws to penetrate outside pipe and the small fire gas chamber of drawing, set up the limit small fire again on the furnace end and draw and penetrate pipe and limit small fire gas chamber to alright with supply with very little gas, thereby can support the limit small fire. Therefore, the limit small-fire ejector pipe and the limit small-fire gas cavity can be specially used in the state of leaving the pot. Therefore, when the pot is separated, the limit small fire injection pipe and the limit small fire gas cavity can be switched to convey gas, and the firepower when the pot is separated can be reduced to the limit state. Therefore, the stove provided with the stove head has extremely low energy consumption in the state of being away from the pot, avoids energy waste and has higher safety. Meanwhile, flame still exists on the cooker, and the flame can be quickly adjusted to the flame during normal cooking when the cooker is cooked again.

Illustratively, the big fire gas chamber is annular, and the small fire gas chamber and the extreme small fire gas chamber are located within an inner circumference of the annular. Through the arrangement, the existing furnace end is changed slightly, so that the change amount of a manufacturing die and a production process is small, and the production and manufacturing cost is effectively controlled. Also, since the limit fire has a small fire power, it is easily disturbed by other factors. The arrangement of the limited small-fire gas cavity at the position close to the inside can prevent water stains and the like on the panel of the stove from being sputtered to the limited small-fire gas cavity, so that flameout is caused. Therefore, the flame stability is better in the limit small fire state.

Exemplarily, a central tube coaxially arranged with the ring shape is arranged on the furnace end main body, a first partition plate extending along the vertical direction is arranged in the central tube, and the first partition plate separates the space in the central tube to form a small-fire gas cavity and a limit small-fire gas cavity respectively. Through the arrangement, the structure of the furnace end main body is simple, the change of the existing furnace end structure is minimum, and therefore the production cost is low.

Illustratively, the horizontal cross-sectional area of the small fire chamber is greater than the horizontal cross-sectional area of the extremely small fire chamber. Under the condition of the small fire at the limit, the required gas quantity is lower, so that the required gas quantity can be conveyed only by a narrow gas conveying channel, in addition, the horizontal sectional area of the gas cavity with the small fire at the limit is reduced, the required gas quantity can be prevented from generating great influence when the small fire is conveyed to burn through the gas cavity with the small fire, and meanwhile, the structure and the size of the existing furnace end can be ensured to be not greatly influenced.

Exemplarily, be provided with flame out protection device on the furnace end main part, flame out protection device is closer to the fire protection hole that the little fire gas passageway of limit corresponds than the fire protection hole that little fire gas passageway corresponds. The flameout protection device is a safety guarantee device, when the gas stove is flameout accidentally (for example, when boiled water overflows to extinguish fire during cooking), the gas stove automatically closes a gas passage to stop gas supply, so that safety is guaranteed. Therefore, the safety of the furnace end is higher. This flame-out protection device can guarantee when burning with the state of limit small fire, and the temperature of flame-out protection device department still can be higher than flame-out protection temperature, can avoid flame-out protection device erroneous judgement and cut off the air feed from this, avoids the flame on furnace end and the fire lid subassembly to extinguish.

Illustratively, the fire lid subassembly can include little fire lid, and little fire is covered and is provided with first little fire lid cavity and the little fire lid cavity of second, and first little fire lid cavity is used for forming little fire gas channel with little fire gas cavity jointly, and the little fire gas channel of second is used for forming limit little fire gas channel with limit little fire gas cavity jointly, and little fire gas channel and limit little fire gas channel all communicate with the fire protection hole that little fire covered. The small fire cover is matched with the furnace end for use, so that the stove has the function of limiting small fire in a state of being away from the pot.

Illustratively, the fire cover assembly may further comprise a distributor disposed on the burner head; and the big fire cover is arranged on the fire distributor, the big fire cover and the fire distributor jointly form a big fire cover cavity, the big fire cover cavity and the big fire gas cavity form a big fire gas channel, and the big fire cover cavity is communicated between the big fire gas cavity and the fire protection hole of the big fire cover. Through the arrangement, the stove has the function of big fire.

Exemplarily, be provided with a plurality of location portions on the distributor, be provided with a plurality of location cooperation portions that correspond on the periphery wall of little fire lid, a plurality of location portions are connected with a plurality of location cooperation portions one-to-one, and a plurality of location cooperation portions set up with little fire lid central axis non-centrosymmetric. Therefore, the fool-proof function can be achieved, and the correct installation position of the small fire cover is ensured.

Exemplarily, the cooker further comprises a valve body assembly, the valve body assembly comprises a valve body and a valve core rotatably arranged in the valve body, a big fire pipeline nozzle used for being communicated with the big fire injection pipe, a small fire pipeline nozzle used for being communicated with the small fire injection pipe and a limit small fire pipeline nozzle used for being communicated with the limit small fire injection pipe are arranged on the valve body, and the valve core controls the conduction and the cut-off of the big fire pipeline nozzle, the small fire pipeline nozzle and the limit small fire pipeline nozzle. The valve body assembly is matched with the furnace end for use, so that the stove has the function of extremely small fire in a state of being away from the pot.

Exemplarily, the cooking utensil further comprises a pot leaving detection device and a controller, the controller is electrically connected to the pot leaving detection device and the valve body assembly, the pot leaving detection device is used for collecting a pot leaving signal and sending the pot leaving signal to the controller, and the controller controls the valve body assembly based on the pot leaving signal so as to enable the big fire pipeline nozzle and the small fire pipeline nozzle to be cut off and the limit small fire pipeline nozzle to be conducted. Through this kind of setting, after leaving the pot, the user need not manual regulation valve body subassembly, reduces working strength, uses and experiences better.

Illustratively, the pot detection device is disposed on a panel of the cooktop and spaced apart from the fire lid assembly. Therefore, the detection device can be relatively far away from the flame, the ambient temperature is relatively low, and the service life of the detection device is relatively long.

Illustratively, the pot-leaving detection device comprises an infrared transmitter and an infrared receiver, the infrared transmitter is used for transmitting infrared rays, and the infrared receiver is used for receiving the infrared rays reflected by the pot, generating a pot-leaving signal and sending the pot-leaving signal to the controller. The pot-leaving detection device has high precision, can not cause performance reduction after long-term use, and has high stability.

A series of concepts in a simplified form are introduced in the disclosure, which will be described in further detail in the detailed description section. The summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

The advantages and features of the present invention are described in detail below with reference to the accompanying drawings.

Drawings

The following drawings of the present invention are used herein as part of the present invention for understanding the present invention. There are shown in the drawings, embodiments and descriptions thereof, which are used to explain the principles of the invention. In the drawings, there is shown in the drawings,

fig. 1 is a perspective view of a cooking appliance according to an exemplary embodiment of the present invention;

FIG. 2 is a control schematic of the cooktop shown in FIG. 1;

FIG. 3 is an exploded view of the burner shown in FIG. 2;

fig. 4 is a perspective view of the burner shown in fig. 3;

FIG. 5 is a top view of the valve body assembly shown in FIG. 2; and

fig. 6 is a bottom view of the small fire lid shown in fig. 3.

Wherein the figures include the following reference numerals:

100. a furnace end; 110. a burner body; 111. a central tube; 112. a first separator; 113. a flame-out protection device mounting section; 121. a big fire gas cavity; 122. a small-fire gas chamber; 123. a limit small-fire gas chamber; 131. a high fire ejector tube; 132. a small fire ejector tube; 133. a limit small fire ejector tube; 140. a flame-out protection device; 200. a small fire cover; 212. a first small fire cover cavity; 213. a second small fire cover cavity; 220. a fire protection hole; 230. a positioning and matching part; 240. a second separator; 310. a fire divider; 311. a positioning part; 320. a big fire cover; 321. a fire protection hole; 400. a valve body assembly; 410. a valve body; 411. a fire line nozzle; 412. a small fire pipe nozzle; 413. a limited small fire tube nozzle; 420. a valve core; 500. a cooker; 510. a pot exit detection device; 511. an infrared emitter; 512. an infrared receiver; 520. a controller; 530. a panel.

Detailed Description

In the following description, numerous details are provided to provide a thorough understanding of the present invention. One skilled in the art, however, will understand that the following description illustrates only a preferred embodiment of the invention and that the invention may be practiced without one or more of these details. In addition, some technical features that are well known in the art are not described in detail in order to avoid obscuring the present invention.

In order to better solve the problems, the utility model provides a cooker. The cookers include, but are not limited to, natural gas cookers, artificial gas cookers, liquefied petroleum gas cookers, and the like.

As shown in fig. 1-4, cooktop 500 may include a burner 300. The burner 300 may include, among other things, a burner head 100 and a burner cap assembly. Some of the components described above will be described in detail below with reference to specific embodiments.

As shown in fig. 3-4, the burner 100 may include a burner body 110, a high fire ejector tube 131, a low fire ejector tube 132, and a limited low fire ejector tube 133. The burner body 110 may have a large fire gas chamber 121, a small fire gas chamber 122, and a limit small fire gas chamber 123. The large fire injection pipe 131, the small fire injection pipe 132, and the limit small fire injection pipe 133 may be connected to the burner body 110 by any suitable means, such as welding, integral molding, and the like. The big fire ejector pipe 131 may be connected to the big fire gas chamber 121, the small fire ejector pipe 132 may be connected to the small fire gas chamber 122, and the limit small fire ejector pipe 133 may be connected to the limit small fire gas chamber 123. The arrangement of the big fire injection pipe 131, the small fire injection pipe 132 and the limit small fire injection pipe 133 shown in the figure is only exemplary and does not limit the present invention. The arrangement of the large fire ejector pipe 131, the small fire ejector pipe 132 and the limit small fire ejector pipe 133 can be selected by those skilled in the art according to the arrangement of the large fire gas chamber 121, the small fire gas chamber 122 and the limit small fire gas chamber 123.

The fire cover assembly covers the burner main body 110, forms a big fire gas passage with the big fire gas chamber 121, a small fire gas passage with the small fire gas chamber 122, and a limit small fire gas passage with the limit small fire gas chamber 123. Generally, the fire lid assembly may include a small fire lid 200 and a large fire lid 320. Optionally, the fire lid assembly may also include a distributor 310. A preferred set of embodiments of the fire lid assembly will be described in detail hereinafter.

In the case of a big fire, the big fire induction pipe 131 and the small fire induction pipe 132 supply gas to the big fire gas passage and the small fire gas passage, respectively, to form a big fire. A large fire generally refers to a double ring fire comprising an inner flame and an outer flame. In the small fire state, the small fire induction pipe 132 supplies gas to the small fire gas passage to form a small fire. A small fire generally refers to a single ring fire that includes only an inner flame. The construction and implementation of the components that form both of the above-described flames are well known in the art and, for the sake of brevity, are not described in detail herein. In the limit small fire state, the limit small fire ejecting pipe 133 supplies gas to the limit small fire gas passage to form the limit small fire. The "extreme small fire" refers to a fire that is smaller than the firepower of a small fire. The traditional small fire is still used for cooking in nature although the firepower is small. Therefore, the fire power of the cooker is still relatively large for the state that the user removes the cooker from the cooker (hereinafter referred to as leaving the cooker). The limit small fire can be used in the state of being away from the pot, the fire power can be small enough, and the fire can be ensured not to be extinguished. Therefore, the situation that the flame is extinguished and the user is re-ignited after the pot is removed can be avoided.

For the burner 100, the structure of the limit small fire ejector pipe 133 and the limit small fire gas chamber 123 can be set smaller and smaller than the large fire ejector pipe 131, the large fire gas chamber 121, the small fire ejector pipe 132, and the small fire gas chamber 122, because the limit small fire ejector pipe 133 and the limit small fire gas chamber 123 only need to convey a very small amount of gas, and support a limit small fire. The extreme small fire ejector tube 133 and the extreme small fire gas chamber 123 may be dedicated for use in the off-pot state. Therefore, when the pot is taken off, the limit small fire injection pipe 133 and the limit small fire gas cavity 123 can be switched to convey gas, so that the firepower when the pot is taken off can be reduced to a limit state. Therefore, the cooker 500 provided with the burner 100 has extremely low energy consumption in the state of being away from the pot, avoids energy waste, and has higher safety of the cooker 500.

The manner of switching to the gas supply by the limit small fire ejecting pipe 133 and the limit small fire gas channel may be any, and for example, the switching may be manually performed by an ignition knob on the panel 530 of the cooker 500, manually performed by a separately provided limit small fire button, or automatically performed by the pan leaving detection device 510, or the like.

It should be noted that although the pilot burner 133 and pilot burner channel can be used in the off-pot condition, the pilot burner 132 and pilot burner channel can be used to supply air during the normal cooking phase to provide minimal fire for cooking. The setting can be made as required by those skilled in the art.

Preferably, as shown in fig. 4, the big fire gas chamber 121 may have a ring shape. The small fire gas chamber 122 and the limit small fire gas chamber 123 may be located within the inner circumference of the ring shape. Through the arrangement, the existing furnace end is changed slightly, so that the change amount of a manufacturing die and a production process is small, and the production and manufacturing cost is effectively controlled. Also, since the limit fire has a small fire power, it is easily disturbed by other factors. The placement of the limit small fire gas chamber 123 near the inside may prevent water stains and the like on the panel 530 of the cooktop 500 from being splashed to the limit small fire gas chamber 123, thereby causing a misfire. Therefore, the flame stability is better in the limit small fire state.

Optionally, the large-fire gas cavity 121, the small-fire gas cavity 122 and the limit small-fire gas cavity 123 may also be disposed on the burner main body 110 in any other manner, and those skilled in the art may manufacture different structures as needed, which is not described herein again.

Further, as shown in fig. 4, a central tube 111 may be provided on the burner body 110. The central tube 111 may be arranged coaxially with the annular big fire gas chamber 121. A first partition 112 extending in a vertical direction may be disposed in the center pipe 111. The first partition 112 may partition the space inside the center pipe 111 to form the small flame chamber 122 and the limit small flame chamber 123, respectively. Through the arrangement, the structure of the furnace end main body 110 is simple, the change of the existing furnace end structure is minimum, and therefore the production cost is low.

Further, as shown in fig. 4, the horizontal cross-sectional area of the small fire gas chamber 122 may be larger than that of the limit small fire gas chamber 123. Under the condition of the small fire at the limit, the required gas quantity is lower, so the required gas quantity can be conveyed only by a narrow gas conveying channel, in addition, the horizontal sectional area of the gas cavity 123 with the small fire at the limit can be reduced, the required gas quantity can be prevented from generating great influence when the small fire is conveyed through the gas cavity 122 with the small fire for combustion, and meanwhile, the structure and the size of the existing burner head can be ensured to be not greatly influenced.

Preferably, as shown in fig. 2 and 4, a flameout protector mounting part 113 may be provided on the burner body 110. The extinguisher mounting section 113 may have any configuration as long as it can mount the extinguisher 140 (shown in fig. 2 and 3). Accordingly, the burner 100 may also include a flameout protection device 140. The extinguisher protector 140 may be mounted on the extinguisher mounting portion 113. Flame arrestor 140 may take the form of various types of flame arrestors known in the art or that may occur in the future, such as thermocouple flame arrestors, ion-sensitive flame arrestors, and the like. The flame-out protection device 140 is a safety device, and when the gas stove is accidentally flamed out (for example, when boiled water overflows to extinguish fire during cooking), the gas stove 500 automatically closes the gas passage to stop gas supply, thereby ensuring safety. The safety of the burner 100 is high.

The flame arrestor device 140 may be closer to the fire protection orifice corresponding to the threshold low fire gas passage than to the fire protection orifice corresponding to the low fire gas passage. In the embodiment shown in the drawings, the small fire cover 200 covers the small fire gas chamber 122 and the limit small fire gas chamber 123 of the burner body 110, forming a small fire gas channel and a limit small fire gas channel, respectively. The misfire-guard mounting section 113 is provided on the side where the extremely small flame chamber 123 is located, as shown in fig. 4. When assembled, the extinguisher protection device 140 may be placed closer to the corresponding fire protection apertures 220 of the minimal fire gas passageway, as shown in FIG. 3. As described above, the limit flare-up is low in fire power, and the purpose thereof is mainly to maintain the flame on the burner 300. When the gas is combusted in the mode of the limit small fire, the gas is not supplied to the small fire injection pipe 132 and the small fire gas channel, so that no flame exists at the fire protection hole on the small fire cover 200 corresponding to the small fire gas channel. Therefore, the flameout protection device 140 is arranged closer to the corresponding flame protection hole of the limit small fire gas channel, so that the temperature of the flameout protection device 140 can still be higher than the flameout protection temperature when the limit small fire is in a combustion state, thereby preventing the flameout protection device 140 from misjudging and cutting off the gas supply, and preventing the flame on the burner 100 and the burner cap assembly from being extinguished.

As shown in fig. 6, the small fire lid 200 may be provided with a first small fire lid cavity 212 and a second small fire lid cavity 213. In the embodiment shown in the drawings, a second partition 240 extending in a vertical direction may be provided in the small fire lid 200. The second partition 240 may separate the first small fire lid chamber 212 and the second small fire lid chamber 213 on the small fire lid 200. Through the arrangement, the small fire cover 200 is simple in structure and low in production cost. On this basis, the horizontal cross-sectional area of the first small fire lid cavity 212 may be larger than that of the second small fire lid cavity 213. In other embodiments not shown in the figures, the first small fire lid cavity 212 and the second small fire lid cavity 213 can be disposed on the small fire lid 200 by any other suitable method.

The first small cap cavity 212 may form a small fire gas channel together with the small fire gas chamber 122. The second small cap cavity 213 may form a limit small fire gas passage together with the limit small fire gas chamber 123. Both the small fire gas channel and the limit small fire gas channel can be communicated with the fire protection hole 220 on the small fire cover 200. When the gas is supplied through the limit small fire gas channel, only the flame is arranged at the flame-protecting holes corresponding to the second small fire cover cavity 213 on the small fire cover 200, so as to form the limit small fire mode. When a small fire mode needs to be formed, air can be supplied through the small fire gas channel, and flames are arranged at the fire protection holes on the small fire cover 200 and corresponding to the first small fire cover cavity 212; alternatively, the gas can be supplied through the limit small fire gas channel and the small fire gas channel together, and then the small fire cover 200 has flames at all the fire protection holes. The small fire cover 200 is used in cooperation with the burner 100, so that the cooker 500 has a function of limiting small fire in a state of being away from the cooker.

In the embodiment shown in fig. 2-3, the fire lid assembly includes a distributor 310. The distributor 310 may be disposed on the burner 100 in any suitable manner. The small fire lid 200 may be disposed on the distributor 310 in any suitable manner. Preferably, the distributor 310 may be provided with a plurality of positioning portions 311. Referring to fig. 6 in combination, the outer peripheral wall of the small fire lid 200 may be provided with a corresponding plurality of positioning engagement portions 230. The plurality of positioning portions 311 and the plurality of positioning engagement portions 230 may be connected in one-to-one correspondence. In the embodiment shown in the drawings, the plurality of positioning portions 311 are positioning holes, and the plurality of positioning engagement portions 230 are positioning pins, and the small fire lid 200 is set on the distributor 310 by inserting the positioning pins into the positioning holes. In the embodiment not shown in the drawings, the structures of the positioning portions 311 and the positioning matching portions 230 may be interchanged, or any other suitable structures may be adopted. The plurality of position fitting parts 230 are disposed non-centrosymmetrically with respect to the central axis of the small fire lid 200. Thus, the fool-proof function can be achieved, and the correct installation position of the small fire cover 200 is ensured. This is particularly true in embodiments where the horizontal cross-sectional area of the first small fire lid cavity 212 is greater than the horizontal cross-sectional area of the second small fire lid cavity 213. The large fire cover 320 may be disposed on the distributor 310 in any suitable manner. The large fire lid 320 and the distributor 310 may together form a large fire lid cavity. The large cap cavity is inside the large cap 320 and distributor 310 shown in fig. 3. When the two are assembled on the burner 100, the big fire cover cavity and the big fire gas cavity 121 together form a big fire gas channel. The big fire cover cavity can be communicated between the big fire gas cavity 121 and the fire protection hole 321 of the big fire cover 320.

The cooktop can also include a valve body assembly 400. The valve body assembly 400 may be used with the burner 100. As shown in fig. 2 and 5, the valve body assembly 400 may include a valve body 410 and a valve spool 420. The valve spool 420 is rotatably disposed within the valve body 410. The valve body 410 may be provided with a large fire pipe nozzle 411, a small fire pipe nozzle 412, and a limit small fire pipe nozzle 413. The high-fire pipeline nozzle 411 can be used for being communicated with the high-fire injection pipe 131, and the valve core 420 can control the on and off of the high-fire pipeline nozzle 411. The small fire pipe nozzle 412 may be used to communicate with the small fire injection pipe 132, and the valve core 420 may control the on and off of the small fire pipe nozzle 412. The limit small fire pipe nozzle 413 can be used for being communicated with the limit small fire injection pipe 133, and the valve core 420 can control the on and off of the limit small fire pipe nozzle 413. When the cooker 500 is in an off-pot state, the valve core 420 can control the limit small fire pipe nozzle 413 to be turned on, and the big fire pipe nozzle 411 and the small fire pipe nozzle 412 to be turned off, so that the cooker 500 is in a limit small fire state. Therefore, the valve body assembly 400 is used with the burner 100, so that the cooker 500 has a function of a minimum small fire in a state of being away from the pot. The valve core 420 may control the on/off of the limit small fire pipe nozzle 413 in any way, for example, a user may manually rotate an ignition knob on the panel 530 to rotate the valve core 420, through a separately provided limit small fire button or through the pan leaving detection device 510.

In a preferred embodiment, as shown in fig. 1-2, the cooktop 500 can further include an off-pot detection device 510 and a controller 520. The controller 520 may be electrically connected to the departure pot detection apparatus 510 and the valve body assembly 400. The off-pot detection means 510 may comprise any suitable off-pot detection means as long as it is capable of collecting and sending an off-pot signal to the controller when a pot is on and/or off the pot holder. Illustratively, the out-of-pot detection means 510 may comprise an out-of-pot detection means with a trigger switch that is triggered when a pot is on and/or off the pot holder. Of course, the pan-out detection device 510 may have other various structures as long as the functions thereof can be realized. Preferably, the out-of-pot detection device 510 may be provided on a panel 530 of the hob 500. The pot exit detection device 510 is disposed spaced apart from the burner 300, that is, the fire cover assembly of the burner 300, as shown in fig. 1. Thus, the detection device 510 can be relatively far away from the flame, the ambient temperature is relatively low, and the service life of the detection device 510 is relatively long.

Based on this, the off-pan detection device 510 may include an infrared transmitter 511 and an infrared receiver 512, as shown in fig. 1. Infrared emitter 511 may be used to emit infrared light. When the cookware is positioned on the cookware support, the infrared rays can be reflected by the cookware, and the infrared receiver 512 can be used for receiving the infrared rays reflected by the cookware and generating a pan-leaving signal. The pan-out signal is then sent to the controller 520. In the case of a mechanical pot-leaving detection device, after a long-term use of an elastic member (such as a spring), the sensitivity is reduced, which may result in a reduction in the performance of the pot-leaving detection device. This leave pot detection device 510 precision is higher to after long-term the use, also can not lead to the performance degradation, stability is higher.

The pan-out detection device 510 is used for collecting a pan-out signal and sending the pan-out signal to the controller 520. The controller 520 may control the valve body assembly 400 based on the off-pot signal to turn off the large fire pipe nozzle 411 and the small fire pipe nozzle 412 and turn on the limit small fire pipe nozzle 413. Through this kind of setting, after leaving the pot, the user need not manual regulation valve body subassembly 400, reduces working strength, uses and experiences better.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front", "rear", "upper", "lower", "left", "right", "horizontal", "vertical", "horizontal" and "top", "bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner" and "outer" refer to the interior and exterior relative to the contours of the components themselves.

For ease of description, relative terms of regions such as "above … …", "above … …", "above … …", "above", and the like may be used herein to describe the regional positional relationship of one or more components or features with other components or features as illustrated in the figures. It is to be understood that the relative terms of the regions are intended to encompass not only the orientation of the element as depicted in the figures, but also different orientations in use or operation. For example, if an element in the drawings is turned over in its entirety, the articles "over" or "on" other elements or features will include the articles "under" or "beneath" the other elements or features. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". Further, these components or features may also be positioned at various other angles (e.g., rotated 90 degrees or other angles), all of which are intended to be encompassed herein.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, elements, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many more modifications and variations are possible in light of the teaching of the present invention and are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (12)

1. A hob, characterized in that it comprises:

the burner comprises a burner body, the burner body is provided with a large-fire gas cavity, a small-fire gas cavity and a limit small-fire gas cavity, the burner further comprises a large-fire injection pipe, a small-fire injection pipe and a limit small-fire injection pipe, the large-fire injection pipe is connected to the burner body, the small-fire injection pipe is connected to the small-fire gas cavity, and the limit small-fire injection pipe is connected to the limit small-fire gas cavity; and

the fire cover assembly covers the furnace end main body, forms a big fire gas channel with the big fire gas cavity, forms a small fire gas channel with the small fire gas cavity, and forms a limit small fire gas channel with the limit small fire gas cavity.

2. The cooking appliance of claim 1, wherein the big fire gas cavity is annular and the small fire gas cavity and the extreme small fire gas cavity are located within an inner circumference of the annular shape.

3. The cooktop of claim 2, wherein a center tube is disposed coaxially with the ring, and a first partition is disposed in the center tube and extends in a vertical direction, the first partition separating a space in the center tube to form the small-flame gas chamber and the limit small-flame gas chamber, respectively.

4. The cooktop of claim 3, wherein the horizontal cross-sectional area of the small fire gas cavity is greater than the horizontal cross-sectional area of the ultimate small fire gas cavity.

5. The cooking appliance of claim 1, wherein a flameout protection device is disposed on the burner body, and the flameout protection device is closer to the flame-holding hole corresponding to the limit small-fire gas channel than to the flame-holding hole corresponding to the small-fire gas channel.

6. The cooking appliance of claim 1, wherein the fire lid assembly comprises a small fire lid, a first small fire lid cavity and a second small fire lid cavity are arranged on the small fire lid, the first small fire lid cavity and the small fire gas cavity jointly form the small fire gas channel, the second small fire lid cavity and the limit small fire gas cavity jointly form the limit small fire gas channel, and the small fire gas channel and the limit small fire gas channel are both communicated with a fire protection hole in the small fire lid.

7. The cooktop of claim 6, wherein the fire lid assembly further comprises:

the fire distributor is arranged on the furnace head, and the small fire cover is arranged on the fire distributor; and

big fire lid, big fire lid sets up on the distributor, big fire lid with the distributor forms big fire lid cavity jointly, big fire lid cavity with big fire gas chamber forms big fire gas passageway, wherein, big fire lid cavity intercommunication is in big fire gas chamber with between the fire protection hole of big fire lid.

8. The cooking utensil as claimed in claim 7, characterized in that the distributor is provided with a plurality of positioning parts, the outer peripheral wall of the small fire cover is provided with a corresponding plurality of positioning matching parts, the plurality of positioning parts are connected with the plurality of positioning matching parts in a one-to-one correspondence, and the plurality of positioning matching parts are arranged non-centrosymmetrically with respect to the central axis of the small fire cover.

9. The cooking appliance according to claim 1, further comprising a valve body assembly, wherein the valve body assembly comprises a valve body and a valve core rotatably disposed in the valve body, a big fire pipeline nozzle communicated with the big fire injection pipe, a small fire pipeline nozzle communicated with the small fire injection pipe and a limit small fire pipeline nozzle communicated with the limit small fire injection pipe are disposed on the valve body, and the valve core controls the on and off of the big fire pipeline nozzle, the small fire pipeline nozzle and the limit small fire pipeline nozzle.

10. The cooktop of claim 9, further comprising a pot exit detection device and a controller, the controller electrically connected to the pot exit detection device and the valve body assembly, the pot exit detection device configured to collect a pot exit signal and send the pot exit signal to the controller, the controller controlling the valve body assembly based on the pot exit signal to turn off the large fire pipe nozzle and the small fire pipe nozzle and turn on the limit small fire pipe nozzle.

11. The cooktop of claim 10, wherein the pot detection device is disposed on a panel of the cooktop and spaced apart from the fire lid assembly.

12. The cooktop of claim 11, wherein the pot detection device comprises an infrared emitter to emit infrared light and an infrared receiver to receive infrared light reflected from a pot and generate the pot exit signal and send the pot exit signal to the controller.

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