CN215446552U

CN215446552U - Kitchen range

Info

Publication number: CN215446552U
Application number: CN202121478781.7U
Authority: CN
Inventors: 沈文盟
Original assignee: Zhejiang Supor Kitchen and Bathroom Electrical Appliance Co Ltd
Current assignee: Zhejiang Supor Kitchen and Bathroom Electrical Appliance Co Ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2022-01-07
Anticipated expiration: 2031-06-30

Abstract

The utility model provides a stove which comprises a stove head and a gas transmission pipeline connected to the stove head. The cooking utensils still include: the gas regulating valve is arranged on the gas transmission pipeline and used for regulating the gas flow in the gas transmission pipeline, and the gas regulating valve generates a gas supply signal when in an open state; the fire detection device is arranged on the furnace end and used for generating a flameout signal when the furnace end is flameout; and the main control device is electrically connected with the fire detection device and the gas regulating valve and is used for controlling the gas regulating valve to increase the gas flow and carry out ignition and reburning on the burner according to the gas supply signal and the flameout signal. The kitchen range with the setting can judge whether flame is accidentally extinguished, automatically ignites under the condition of accidental flameout, and increases the gas flow by controlling the gas regulating valve to improve the success rate of afterburning. The flameout condition appears midway in unattended cooking, the cooker can control the flame to automatically reburn, so that the cooking is continued, the user experience is improved, and the safety is also ensured.

Description

Kitchen range

Technical Field

The utility model relates to the technical field of kitchen utensils, in particular to a stove.

Background

Cookers have been widely used as kitchen utensils, and safety issues of cookers in use have been gradually emphasized.

In the existing stove, when a user uses the stove, if flame of a burner is extinguished, the stove can normally cut off gas in a gas transmission pipeline according to flameout protection so as to avoid gas leakage.

However, after the flameout protection is finished, the flame of the burner head needs to be re-ignited manually by the user, and cannot be re-ignited automatically, so that the use experience of the user is affected.

SUMMERY OF THE UTILITY MODEL

In order to at least partially solve the problems in the prior art, according to a first aspect of the present invention, there is provided a cooking appliance comprising a burner and a gas transmission pipeline connected to the burner, characterized in that the cooking appliance further comprises; the gas regulating valve is arranged on the gas transmission pipeline and used for regulating the gas flow in the gas transmission pipeline, and the gas regulating valve generates a gas supply signal when in an open state; the fire detection device is arranged on the furnace end and used for generating a flameout signal when the furnace end is flameout; and the main control device is electrically connected with the fire detection device and the gas regulating valve and is used for controlling the gas regulating valve to increase the gas flow and carry out ignition and reburning on the burner according to the gas supply signal and the flameout signal.

Therefore, the kitchen range with the arrangement judges whether flame at the furnace end is accidentally extinguished according to the gas supply signal and the flameout signal, automatically ignites under the condition of accidental flameout, and increases the gas flow by controlling the gas regulating valve so as to improve the success rate of afterburning. Like this, when the flameout condition appears midway in unmanned on duty's culinary art, the cooking utensils just can control the automatic after combustion of furnace end for the culinary art continues to go on, and then has improved user experience, but also has improved the security.

Illustratively, the gas regulating valve has a first opening position when flameout and a second opening position after increasing the gas flow, and the main control device is further used for controlling the gas regulating valve to return to the first opening position after determining that the burner is re-fired.

Under the condition of no user operation, the stove not only can automatically reburn with high success rate after the furnace end is accidentally extinguished, but also can automatically adjust the flame to the state before the flameout, so that the new safety problem caused by overlarge flame due to the reburning of the furnace end is avoided. For cooking, safe and reliable automatic management can be realized, and no influence on cooking effect is generated.

Illustratively, the fire detection device is further configured to generate a combustion signal when the burner has a flame, and the main control device is further configured to determine a re-firing of the burner according to the combustion signal. Thus, whether the afterburning is successful or not can be judged by using the existing device of the furnace end.

Illustratively, the main control device comprises a timer for timing the time when the gas regulating valve is in the second opening position, and the main control device is further used for determining the burner after combustion when the time reaches a preset threshold value.

In order to ensure the success rate of the afterburning, after the gas regulating valve is positioned at the second opening position, the gas regulating valve is always kept at the second opening position with larger gas flow according to a preset threshold value. And when the time that the gas regulating valve is in the second opening position reaches a preset threshold value, the gas regulating valve returns to the first opening position before re-combustion.

Illustratively, the cooking appliance further comprises a manual regulating valve electrically connected to the main control device, the manual regulating valve generating a regulating signal in response to a user's operation, and the main control device further controlling the gas regulating valve to regulate the gas flow according to the regulating signal.

The cooking utensils that have this setting can adjust the flame size of furnace end through manual control valve, convenience of customers's use, to the gas governing valve that can adjust according to the signal that main control unit sent automatically moreover, manual control valve's joining can not increase too much parts for cooking utensils, also easily realizes and the cost is lower.

Illustratively, the fire detection device includes one or more of a temperature sensor and an ion sensitive needle; or/and the gas regulating valve comprises a proportional valve. The main control device can judge the flame state at the furnace end in various ways. The temperature sensor or the ion induction needle has the advantages of accurate measurement, high temperature resistance, simple use mode, low cost and the like. The proportional valve has the advantages that the electric signal transmission is convenient, the remote control can be simply realized, and the stepless regulation on the gas flux can be realized.

Illustratively, the main control device includes controlling means and ignition circuit, examines that ignition device, gas governing valve and ignition circuit all connect electrically to controlling means, and controlling means is used for controlling gas governing valve increase gas flow and controlling ignition circuit to light a fire to the furnace end according to gas supply signal and flame-out signal to make the furnace end after fire. The main control device comprises a control device and an ignition circuit, and the integration level of the cooker can be further improved.

Illustratively, the master control device is a pulse ignition controller. Compared with the common gas stove, the pulse ignition controller is additionally provided with a pulse ignition control circuit, an electromagnetic valve control device, a fire detection device and the like.

Illustratively, the control device is implemented using a single-chip microcomputer. The main control device with the single chip microcomputer for the cooker has the advantages of high integration level, small size, high reliability, low power consumption and the like, and can reduce the cost of the cooker.

Illustratively, the ignition circuit is a pulse ignition circuit. The ignition circuit has high ignition rate, continuous discharge and strong reliability.

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. This summary 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 utility model are included to provide a further understanding of the utility model. The drawings illustrate embodiments of the utility model and, together with the description, serve to explain the principles of the utility model. In the drawings, there is shown in the drawings,

fig. 1 shows a schematic block diagram of a hob according to an embodiment of the present invention.

100. A gas regulating valve; 200. a fire detection device; 300. a main control device; 310. a control device; 320. an ignition circuit; 400. the valve is adjusted manually.

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 merely illustrates a preferred embodiment of the utility model and that the utility model may be practiced without one or more of these details. In other instances, well known features have not been described in detail so as not to obscure the utility model.

According to one aspect of the present invention, a cooking appliance is provided, including a burner and a gas line connected to the burner. The burner can be used as a combustion component of a cooker, and in the using process of the cooker, fuel gas is conveyed to the burner through a gas conveying pipeline. The gas is ignited at the burner to form a flame.

The cooker also comprises a gas regulating valve 100, a fire detection device 200 and a main control device 300. The gas regulating valve 100 is disposed on the gas transmission pipeline and used for regulating the gas flow in the gas transmission pipeline. The gas regulating valve 100 generates a gas supply signal when in an open state. The fire detection device 200 is arranged on the furnace head and used for generating a flameout signal when the furnace head is flameout. The main control device 300 electrically connects the ignition device 200 and the gas control valve 100. The main control device 300 is used for controlling the gas regulating valve 100 to increase the gas flow and to ignite and reburn the burner according to the gas supply signal and the flameout signal.

The hob may be provided with one or more burners. For example, the cooktop may be provided with left and right burners on the left and right of its deck, respectively. It will be appreciated that each burner can be fired independently, i.e. the combustion conditions of all burners are independent of each other. Therefore, for each burner of the stove, the gas regulating valve 100 and the fire detection device 200 corresponding to the burner can be provided. Therefore, the gas regulating valve 100 is disposed on the gas pipe corresponding to the burner. And the fire sensing device 200 is provided on the corresponding burner.

Illustratively, the gas regulator valve 100 may include a flow sensor. The gas flow in the gas transmission pipeline can be detected through the flow sensor, and when the gas flow is not zero, the gas regulating valve 100 can be considered to be in an open state, so that a gas supply signal is generated and sent to the main control device 300. The gas supply state is detected by using the flow sensor, and the detection result is accurate. Thereby ensuring the control accuracy of the control system. For example, a plurality of micro switches may be disposed on the gas regulating valve 100, and different micro switches may be triggered when the gas regulating valve 100 is in the closed position and the open position, so that a gas supply signal may be generated by the micro switch in the open position and sent to the main control device 300 when the gas regulating valve is in the open state. The microswitch is low in cost, gives consideration to the factors of both the accuracy and the cost of the detection of the gas supply state, and improves the cost performance of the stove. Of course, the gas regulating valve 100 may inform the main control device 300 of its operating status in other manners (e.g., providing other types of sensors, such as a position sensor, etc.).

The fire detection device 200 is used for detecting whether the corresponding burner is actually burning with flame or not so as to generate a flameout signal indicating that the burner is in a flameout state. The fire detection device can detect whether the burner of the stove is really burning with flame or not, but cannot detect the specific firepower of the burner. For example, in the above embodiment, the gas regulating valve 100 is already in the open state, and the gas pipe conveys gas to the burner, but the burner may be accidentally extinguished, and the flame is not actually ignited on the burner, and the flame detecting device 200 generates an extinguishing signal. Of course, when the gas control valve 100 is in the closed state, the flame detector 200 detects that there is no flame at the burner, and generates a flame-out signal.

The main control device 300 may control the gas regulating valve 100 to increase the gas flow rate and ignite and reburn the burner according to the gas supply signal from the gas regulating valve 100 and the misfire signal from the fire detecting device 200. In one embodiment, the flame at the burner is normally burned, the gas regulating valve 100 is in an open state, and the gas flow is not zero, and the main control device 300 can receive the gas supply signal sent by the gas regulating valve 100. If the flame at the burner is extinguished, the fire detection device 200 will send a flameout signal to the main control device 300 according to the burner being extinguished. The main control device can judge that the flame at the furnace end is accidentally extinguished according to the received gas supply signal and the flameout signal, namely the flame is extinguished in a non-manual operation mode. The main control means 300 will perform an ignition operation to achieve the re-combustion of the burner. In order to improve the success rate of the afterburning, the main control device 300 can also control the gas regulating valve 100 to increase the gas flow. When the fire is accidentally extinguished, if the burner is in a low-fire state (i.e., the gas flow supplied by the gas regulating valve 100 is small), when the indoor ventilation is good or the suction flow of the range hood is large, the burner may not be ignited again. By controlling the gas regulating valve 100 to increase the gas flow when the accidental fire is cut off, the success rate of the burner reigniting again can be improved.

Therefore, the kitchen range with the arrangement judges whether flame at the furnace end is accidentally extinguished according to the gas supply signal and the flameout signal, automatically ignites under the condition of accidental flameout, and increases the gas flow by controlling the gas regulating valve 100 so as to improve the success rate of afterburning. Like this, when the flameout condition appears midway in unmanned on duty's culinary art, the cooking utensils just can control the automatic after combustion of furnace end for the culinary art continues to go on, and then has improved user experience, but also has improved the security.

Illustratively, the gas regulator valve 100 is in a first open position when de-energized and a second open position after increasing gas flow. The main control means 300 is also used to control the gas regulating valve 100 to return to the first open position after the burner re-firing is determined. In one embodiment, the first open position may be any position of the gas regulating valve 100 before the flame at the burner is extinguished. Take the first open position as the position where the burner flame is a small fire as an example. The second open position may be a position of the gas regulating valve 100 at which the gas flow is maximum, i.e., a position where the burner flame is a big fire. When the flame of the burner is accidentally extinguished and the stove is reburning, the stove can control the gas regulating valve 100 to be regulated to the second opening position, namely the position with the maximum gas flow in the embodiment, while the stove is ignited, so as to improve the success rate of the reburning. After the completion of the reignition, the main control device 300 can also return the gas regulating valve 100 to the low fire position in this embodiment. Meanwhile, the gas regulating valve 100 can also generate a position signal to be fed back to the main control device 300, so as to realize the positioning of the gas regulating valve 100. Therefore, under the condition of no user operation, the stove not only can automatically reburn with high success rate after the furnace end is accidentally extinguished, but also can automatically adjust the flame to the state before the flameout, so that the new safety problem caused by overlarge flame due to the reburning of the furnace end is avoided. For cooking, safe and reliable automatic management can be realized, and no influence on cooking effect is generated.

In order to confirm the successful re-ignition of the burner, in one embodiment, the fire detection device 200 is further configured to generate a combustion signal when the burner has a flame, and the main control device 300 is further configured to determine the re-ignition of the burner based on the combustion signal. Thus, whether the afterburning is successful or not can be judged by using the existing device of the furnace end. In another embodiment, the master control device 300 may include a timer. A timer may be used to time when the gas regulating valve 100 is in the second open position. The timer may start timing when the main control device 300 adjusts the gas regulating valve 100 to the second open position. The main control means 300 may also be used to determine the burner re-ignition when said time reaches a preset threshold. That is, in order to ensure the success rate of the afterburning, after the gas regulating valve 100 is in the second opening position, a preset threshold value may be set, within which the gas regulating valve 100 will always be maintained in the second opening position where the gas flow rate is large. When the time that the gas regulating valve 100 is in the second opening position reaches the preset threshold value, the gas regulating valve 100 returns to the first opening position before the re-combustion. Wherein the preset threshold is too short, the flame may extinguish again due to still being in an unstable state; the preset threshold value is too long, which may cause safety problems due to too large flames, and thus may preferably be set within 1-10 seconds.

Exemplarily, the hob may further comprise a manual regulating valve 400. The manual regulating valve 400 may be electrically connected to the main control device 300. The manual regulating valve 400 generates a regulating signal in response to a user's operation, and the main control device 300 may also control the gas regulating valve 100 to regulate the gas flow according to the regulating signal. The manual regulating valve 400 may control the gas regulating valve 100 to regulate the gas flow rate in response to an active operation of a user. In one embodiment, the manual adjustment valve 400 may be a signal transmission device, the manual adjustment valve 400 generates an adjustment signal in response to a manual adjustment by a user and transmits the adjustment signal to the main control device 300, and the main control device controls the gas adjustment valve 100 according to the adjustment signal to change the fire of the burner during cooking.

The cooking utensils that have this setting can adjust the flame size of furnace end through manual regulation valve 400, convenience of customers's use, to the gas governing valve 100 that can adjust automatically according to the signal that main control unit 300 sent, manual regulation valve 400's joining can not increase too much parts for cooking utensils moreover, also easily realizes and the cost is lower.

Illustratively, the fire detection device 200 includes one or more of a temperature sensor and an ion sensitive needle. Temperature sensor can detect the temperature around the furnace end, and main control unit can judge the state of furnace end department flame according to the height of temperature. The temperature sensor may comprise a thermocouple, for example. The thermocouple is formed by combining two different alloy materials. Different alloy materials generate different thermoelectric potentials under the action of temperature. The ion induction needle works by utilizing the principle of flame conduction, so that current can pass between the ion induction needle and the ground as long as flame exists, and whether the flame exists can be judged by detecting the existence of the current. The main control device can judge the flame state at the furnace end in various ways. The temperature sensor or the ion induction needle has the advantages of accurate measurement, high temperature resistance, simple use mode, low cost and the like.

Illustratively, main control device 300 may include a control device 310 and an ignition circuit 320. The ignition detecting device 200, the gas adjusting valve 100 and the ignition circuit 320 are electrically connected to the control device 310. The control device 310 is used for controlling the gas regulating valve 100 to increase the gas flow and controlling the ignition circuit 320 to ignite the burner according to the gas supply signal and the flameout signal, so as to reburn the burner.

The ignition circuit 320 may be implemented using any ignition circuit 320 known in the art or developed in the future, such as a piezo ceramic type ignition circuit or an electrical impulse type ignition circuit, and the operation principle and the use method thereof are well known to those skilled in the art. For example, when the main control device 300 receives the gas supply signal and the fire-off signal, the ignition circuit 320 of the corresponding burner may be controlled to ignite.

The main control device 300 comprises a control device 310 and an ignition circuit 320, and the integration level of the cooker can be further improved.

Illustratively, the main control device 300 may be a pulse ignition controller. The pulse ignition controller mainly can realize the functions of ignition control, flameout protection, fault alarm and the like. Taking the existing pulse ignition controller as an example, when a user presses an ignition switch, namely an ignition knob on a stove, an ignition needle generates high-voltage sparks, and whether ignition is successful or not is judged through an ignition detection device. If the main control device 300 receives the flame signal, the ignition is stopped, and simultaneously, the feedback detection function, that is, the function of the main control device 300 for monitoring the combustion condition of the flame in real time, is started.

Compared with the common gas stove, the pulse ignition controller is additionally provided with a pulse ignition control circuit, an electromagnetic valve control device, a fire detection device and the like.

It is understood that the main control device 300 may be implemented by using electronic components or hardware circuits. For example, a timer may also be provided within the main control device 300, as described above, whereby the time that the gas regulating valve 100 is in the second open position may be timed. Illustratively, the main control device 300 may be implemented by using electronic components such as a comparator, a timer, a register, and a digital logic circuit, or by using a processor chip such as a microprocessor, a Programmable Logic Controller (PLC), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), a Programmable Logic Array (PLA), and an Application Specific Integrated Circuit (ASIC), and peripheral circuits thereof. Illustratively, the main control device 300 may be implemented using a single chip microcomputer. The main control device with the single chip microcomputer for the cooker has the advantages of high integration level, small size, high reliability, low power consumption and the like, and can reduce the cost of the cooker.

Illustratively, the ignition circuit 320 may be a pulse ignition circuit. The pulse ignition circuit may include a pulse high frequency oscillator, and the high frequency voltage generated by the oscillator generates a high voltage through a booster to perform tip discharge, and the gas at the burner is ignited by the discharged spark. The ignition circuit has high ignition rate, continuous discharge and strong reliability.

The ignition circuit 320 may also be implemented using any ignition circuit known in the art or developed in the future, such as a piezo ceramic type ignition circuit, etc., the principles of operation and methods of use of which are well known to those skilled in the art.

Illustratively, the gas regulator valve 100 may comprise a proportional valve. The proportional valve can control the gas flux in the gas transmission pipeline according to the electric signal sent by the main control device. The proportional valve has the advantages that the electric signal transmission is convenient, the remote control can be simply realized, and the stepless regulation on the gas flux can be realized.

Although the illustrative embodiments have been described herein with reference to the accompanying drawings, it is to be understood that the foregoing illustrative embodiments are merely exemplary and are not intended to limit the scope of the utility model thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the scope or spirit of the present invention. All such changes and modifications are intended to be included within the scope of the present invention as set forth in the appended claims.

In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the utility model may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Similarly, it should be appreciated that in the description of exemplary embodiments of the utility model, various features of the utility model are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the method of the present invention should not be construed to reflect the intent: that the utility model as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.

It will be understood by those skilled in the art that all of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where such features are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.

Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the utility model and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.

It should be noted that the above-mentioned embodiments illustrate rather than limit the utility model, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The utility model may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.

The above description is only for the specific embodiment of the present invention or the description thereof, and the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the protection scope of the present invention. The protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a cooking utensils, includes the furnace end and is connected to the gas transmission pipeline of furnace end, its characterized in that, cooking utensils still include:

the gas regulating valve is arranged on the gas transmission pipeline and used for regulating the gas flow in the gas transmission pipeline, and the gas regulating valve generates a gas supply signal when in an open state;

the fire detection device is arranged on the furnace end and used for generating a flameout signal when the furnace end is flameout;

the main control device is electrically connected with the fire detection device and the gas regulating valve and is used for controlling the gas regulating valve to increase gas flow and carry out ignition and re-combustion on the burner according to the gas supply signal and the flameout signal.

2. The cooktop of claim 1, wherein the gas regulator valve has a first open position when de-energized and a second open position after increased gas flow, the main control means further for controlling the gas regulator valve to return to the first open position after determining that the burner is re-fired.

3. The cooktop of claim 2, wherein the master control device comprises a timer for timing a time that the gas regulating valve is in the second open position, the master control device further being configured to determine the burner re-firing when the time reaches a preset threshold.

4. The cooktop of claim 1, wherein the flame detector is further configured to generate a combustion signal when the burner has a flame, the master control device further configured to determine a afterburning of the burner based on the combustion signal.

5. The cooktop of claim 1, further comprising a manual adjustment valve electrically connected to the main control, the manual adjustment valve generating an adjustment signal in response to user operation, the main control further for controlling the gas adjustment valve to adjust gas flow in accordance with the adjustment signal.

6. The cooktop of claim 1, wherein the flame detection device comprises one or more of a temperature sensor and an ion sensing needle; or/and the gas regulating valve comprises a proportional valve.

7. The cooking appliance according to claim 1, wherein the main control device comprises a control device and an ignition circuit, the fire detection device, the gas regulating valve and the ignition circuit are electrically connected to the control device, and the control device is used for controlling the gas regulating valve to increase gas flow and controlling the ignition circuit to ignite the burner according to the gas supply signal and the flameout signal so as to reignite the burner.

8. The cooktop of claim 7, wherein the master control device is a pulse ignition controller.

9. The cooktop of claim 7, wherein the control device is implemented with a single-chip microcomputer.

10. Hob according to claim 7, characterized in that the ignition circuit is a pulse ignition circuit.