Hood and stove linkage control method and system, and fire state detection method and device

Abstract

The application discloses a smoke stove linkage control method and system, a firepower state detection method and device. The firepower state detection method comprises the following steps: acquiring a first air flow value of an outer ring fire cover assembly; acquiring a second air flow value of an inner ring fire cover assembly; and determining a stove firepower state according to the first air flow value and the second air flow value. According to the first air flow value of the outer ring fire cover assembly and the second air flow value of the inner ring fire cover assembly, the stove firepower state is determined, the air flow is not easily disturbed by the environment, and therefore, the firepower state detection based on the air flow can make the firepower detection result more accurate and convenient for users to use.

Description

Technical Field

[0001] This invention relates to the field of kitchen appliance technology, and in particular to a method for controlling the linkage between the range hood and the stove, a method and device for detecting the firepower status. Background Technology

[0002] Cooktops are essential appliances for daily cooking, and cooktops with flame status detection have become increasingly popular in recent years. However, current products use infrared temperature detection to determine the flame status. This method is susceptible to interference from factors such as human body temperature, which can lead to inaccurate flame status readings. Therefore, flame status detection technology still has room for improvement. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the defect that the temperature acquisition below the stove is subject to many interference factors when using infrared temperature detection to detect the fire status of the stove in the prior art, which makes it impossible to accurately detect the fire status, and to provide a fire status detection method.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] Firstly, a method for detecting flame status is provided, applied to a stove, the stove including an outer ring burner assembly and an inner ring burner assembly, the method for detecting flame status including:

[0006] Obtain the first airflow value of the outer ring flame cap assembly;

[0007] Obtain the second airflow value of the inner ring flame cap assembly;

[0008] The stove's firepower status is determined based on the first airflow value and the second airflow value.

[0009] Optionally, determining the stove's firepower state based on the first airflow value and the second airflow value includes:

[0010] When both the first air flow value and the second air flow value are greater than the first preset air flow value and the first air flow value is greater than the second air flow value, the flow difference between the first air flow value and the second air flow value is determined.

[0011] When the flow difference is greater than the second preset air flow value, it is determined that the stove firepower state is in the first firepower state;

[0012] And / or, when the flow difference is less than or equal to the second preset air flow value, the stove firepower state is determined to be the second firepower state;

[0013] Wherein, the first firepower value of the first firepower state is greater than the second firepower value of the second firepower state.

[0014] Optionally, determining the firepower state of the stove based on the first airflow value and the second airflow value further includes:

[0015] When both the first air flow value and the second air flow value are less than or equal to the first preset air flow value, it is determined that the stove's firepower is in the off state.

[0016] And / or, when the second airflow value is greater than the first preset airflow value and the first airflow value is less than the first preset airflow value, the stove's firepower state is determined to be at the third firepower value.

[0017] The third firepower value is less than the second firepower state.

[0018] Optionally, it also includes:

[0019] When the first airflow value is greater than the first preset airflow value and the second airflow value is less than the first preset airflow value, the stove is determined to be in a fault state.

[0020] Secondly, a method for controlling the linkage between a range hood and a cooktop is provided, the method comprising:

[0021] Determine the stove's firepower status;

[0022] The firepower status of the stove is determined according to any of the firepower status detection methods described above;

[0023] Adjust the fan speed of the range hood according to the firepower status of the stove.

[0024] Optionally, adjusting the fan speed of the range hood according to the firepower status of the stove includes:

[0025] When the stove's firepower is at the first firepower level, adjust the range hood's fan speed to the first fan speed value;

[0026] When the stove's firepower is at the second firepower level, adjust the range hood's fan speed to the second fan speed value;

[0027] When the stove's firepower is at the third firepower level, adjust the range hood's fan speed to the third fan speed value;

[0028] Wherein, the first firepower value of the first firepower state is greater than the second firepower value of the second firepower state, which is greater than the third firepower value of the third firepower state.

[0029] The first wind force value is greater than the second wind force value, which is greater than the third wind force value.

[0030] Optionally, adjusting the fan speed of the range hood according to the firepower of the stove further includes:

[0031] When the stove is turned off, the range hood is turned off.

[0032] Thirdly, a firepower status detection device is provided for use in stoves, the device comprising:

[0033] A first flow sensor is deployed at the air inlet of the outer ring burner assembly of the stove to obtain the first air flow value of the outer ring burner assembly;

[0034] The second flow sensor is deployed at the air inlet of the inner ring burner assembly of the stove to obtain the second air flow value of the inner ring burner assembly.

[0035] A first controller is electrically connected to the first flow sensor and the second flow sensor, and the first controller is used to execute any of the above-mentioned fire status detection methods.

[0036] Optionally, the interval between the first flow sensor and the first flow sensor is between one-third and one-third of the length of the opening in the stove base.

[0037] Fourthly, a range hood and stove linkage control system is provided, the system including the above-mentioned firepower status detection device;

[0038] The communication module connects the first controller and the second controller;

[0039] The second controller is used to receive the stove's firepower status through the communication module and adjust the range hood's fan speed according to the stove's firepower status.

[0040] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this disclosure.

[0041] The positive and progressive effects of the present invention are as follows: In the embodiments of the present invention, the firepower status of the stove is determined based on the first air flow value of the outer ring burner assembly and the second air flow value of the inner ring burner assembly. The air flow is not easily affected by environmental interference, so the firepower status detection based on the air flow can make the firepower detection results more accurate. Attached Figure Description

[0042] Figure 1 A flowchart of a fire status detection method provided as an exemplary embodiment of the present invention;

[0043] Figure 2 A flowchart of a range hood and stove linkage control method provided as an exemplary embodiment of the present invention;

[0044] Figure 3 A flowchart illustrating another method for controlling the linkage between the range hood and stove, as provided in an exemplary embodiment of the present invention;

[0045] Figure 4 A schematic diagram of a fire status detection device provided as an exemplary embodiment of the present invention;

[0046] Figure 5 This is a schematic diagram of a stove-and-range linkage control system provided as an exemplary embodiment of the present invention. Detailed Implementation

[0047] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments.

[0048] Example 1

[0049] In order to accurately detect the firepower status of a stove, this invention provides a firepower status detection method. Figure 1 A flowchart of a fire status detection method provided as an exemplary embodiment of the present invention is included, the fire status detection method comprising the following steps:

[0050] Step 101: Obtain the first airflow value of the outer ring fire cap assembly.

[0051] In one embodiment, see Figure 3 A first air flow sensor is deployed at the air intake of the outer ring fire cap assembly to obtain a first air flow value.

[0052] Using a first air flow sensor to obtain a first air flow value can make the flow value more accurate.

[0053] Step 102: Obtain the second airflow value of the inner ring flame cap assembly.

[0054] In one embodiment, a second airflow sensor is deployed at the air intake of the inner ring flame cap assembly to obtain a second airflow value.

[0055] Using a second air flow sensor to obtain a second air flow value can make the flow value more accurate.

[0056] Step 103: Determine the stove's firepower status based on the first airflow value and the second airflow value.

[0057] In this embodiment of the invention, the firepower status of the stove is determined based on the first airflow value of the outer ring burner assembly and the second airflow value of the inner ring burner assembly. Since the airflow is not easily affected by environmental interference, firepower status detection based on airflow can make the firepower detection results more accurate.

[0058] In one embodiment, when both the first airflow value and the second airflow value are greater than the first preset airflow value, the flow difference between the first airflow value and the second airflow value is determined. When the flow difference is greater than the second preset airflow value, the stove's firepower state is determined to be in the first firepower state.

[0059] When the flow difference is greater than the second preset air flow value, that is, when the first air flow value of the outer ring burner assembly is much greater than the second air flow value of the inner ring burner assembly, it indicates that the gas in the stove is flowing at a high flow rate, and the stove's firepower state is determined to be the first firepower state, which is the high firepower state.

[0060] In one embodiment, when both the first airflow value and the second airflow value are greater than the first preset airflow value, the flow difference between the first airflow value and the second airflow value is determined. When the flow difference is less than or equal to the second preset airflow value, the stove's firepower state is determined to be the second firepower state.

[0061] When the flow difference is less than or equal to the second preset air flow value, that is, when the first air flow value of the outer ring burner assembly is much less than or equal to the second air flow value of the inner ring burner assembly, it indicates that the gas in the stove is flowing at a medium flow rate, and the stove's firepower state is determined to be the second firepower state, which is the medium firepower state.

[0062] The first firepower value in the first firepower state is greater than the second firepower value in the second firepower state.

[0063] The working mechanism of the embodiments of the present invention will be further explained below:

[0064] A typical stove burner consists of an inner ring and an outer ring. The inner ring has a lower load and a smaller nozzle orifice, resulting in a lower gas flow rate. The outer ring has a higher load and a larger nozzle orifice, resulting in a higher gas flow rate. The first air flow rate value corresponds to the air flow rate of the outer ring, and the second air flow rate value corresponds to the air flow rate of the inner ring. Stove ignition is generally achieved by pressing down and rotating 90 degrees. When ignition is successful, gas flows through both the inner and outer rings, and both the first and second air flow rate values ​​are greater than the first preset air flow rate value. The outer ring has a much higher load and its ejector capacity is also greater than that of the inner ring. Therefore, when both the first and second air flow rate values ​​are greater than the first preset air flow rate value, and the first air flow rate value is greater than the second air flow rate value, it indicates that gas flows through both the inner and outer rings, meaning ignition has occurred. This also indicates that neither the inner nor outer ring is malfunctioning. The difference between the first and second air flow rate values ​​needs to be compared to further determine the flame strength. When the difference is greater than the second preset air flow rate value, the stove is determined to be in a high-power state. When the flow difference is less than or equal to the second preset air flow value, the stove's firepower is determined to be medium firepower.

[0065] The first preset airflow rate is between 0 and 0.05 L / min, and the second preset airflow rate is between 12.05 and 17.15 L / min.

[0066] In this embodiment of the invention, the firepower is effectively detected based on the first air flow value, the second air flow value, and the difference between the two. This eliminates the influence of outer and inner ring faults on the detection results and improves the detection accuracy.

[0067] In one embodiment, the firepower state is determined based on the ratio of the first airflow value to the second airflow value. The specific implementation process is similar to that based on the flow difference, except that the second preset airflow value needs to be adaptively adjusted according to the actual situation.

[0068] In one embodiment, when the second airflow value is greater than the first preset airflow value and the first airflow value is less than the first preset airflow value, the stove's firepower state is determined to be in the third firepower state.

[0069] Among them, the third firepower value of the third firepower state is less than the second firepower value of the second firepower state.

[0070] When the second air flow rate is greater than the first preset air flow rate and the first air flow rate is less than the first preset air flow rate, that is, there is gas in the inner ring and no gas or very little gas in the outer ring, it indicates that the gas in the stove is flowing at a low flow rate, and the stove's firepower state is determined to be the third firepower state, which is the low firepower state.

[0071] In this embodiment of the invention, by combining the first air flow value and the second air flow value, the low-firepower state of the stove can be effectively and accurately detected.

[0072] In one embodiment, when both the first air flow value and the second air flow value are less than or equal to the first preset air flow value, it indicates that there is no gas or very little gas in either the inner or outer ring, and the stove's firepower is determined to be in the off state.

[0073] In one embodiment, when the first airflow value is greater than the first preset airflow value and the second airflow value is less than the first preset airflow value, the stove is determined to be in a faulty state.

[0074] Under normal ignition (on) conditions, there should be gas flow in the inner ring. If the first air flow value is greater than the first preset air flow value and the second air flow value is less than the first preset air flow value, that is, there is no gas flow in the inner ring or the gas flow is very small, it means that there is no gas in the inner ring but there is gas in the outer ring. It is highly likely that there is a fault such as nozzle blockage or gas leakage in the inner ring.

[0075] When a malfunction is detected in the stove, an alarm can be generated to prompt the user or maintenance personnel to perform timely repairs. The notification methods may include, but are not limited to, voice, audible and visual alarms, SMS, and telephone calls.

[0076] In the process of detecting the fire status, the present invention realizes the fault detection of the stove based on the first air flow value and the second control flow value, which can detect faults in time and ensure the safe use of the stove.

[0077] In one embodiment, fire status detection can be achieved based on a parameter derived from a first airflow rate value. Specifically:

[0078] When the first air flow value is less than or equal to the first preset flow value, it indicates that there is no gas flow, and the stove's firepower is determined to be off.

[0079] When the first air flow value is greater than the first preset flow value, it is determined that the stove firepower is in the on state.

[0080] When the stove is on, the flame level can also be detected. Specifically:

[0081] When the first airflow value is greater than the third preset airflow value, the stove is determined to be in a high-power state. When the first airflow value is less than or equal to the third preset airflow value but greater than the fourth preset airflow value, the stove is determined to be in a medium-power state. When the first airflow value is less than or equal to the fourth preset airflow value but greater than or equal to the first preset airflow value, the stove is determined to be in a low-power state.

[0082] Among them, the third preset flow rate value > the fourth preset flow rate value > the first preset flow rate value, the third preset air flow rate value ranges from 36.8 to 50.5 L / min, and the fourth preset air flow rate value ranges from 17.5 to 26.3 L / min.

[0083] In one embodiment, the fire status can also be detected based on a second airflow parameter. The specific implementation process is similar to that of the fire status detection based on the first airflow. The difference is that the preset airflow value for different fire statuses needs to be adjusted according to the actual situation. The specific implementation process will not be described here.

[0084] Because the firepower of the stove is controlled by the valve body, the valve body, whether it is infinitely adjustable or has a gear adjustment, is basically in the above states, namely, high firepower, medium firepower, low firepower, closed, and open.

[0085] In one embodiment, if the solenoid valve of the flameout valve body closes and gas flow ceases, the air volume is essentially zero, meaning both the first and second air flow values ​​are less than or equal to the first preset air flow value. Gas leakage can be determined by comparing the first and second air flow values ​​with relevant preset values. Furthermore, if the leakage is significant, the stove will not burn stably, similar to flameout, and the thermocouple or ionizing needle will cause the solenoid valve to close.

[0086] Example 2

[0087] Figure 2 A flowchart of a range hood and stove linkage control method provided as an exemplary embodiment of the present invention is included, the control method comprising the following steps:

[0088] Step 201: Determine the stove's firepower status.

[0089] In one embodiment, the stove's firepower status is determined according to the firepower status detection method provided in any of the above embodiments.

[0090] Step 202: Adjust the fan speed of the range hood according to the firepower of the stove.

[0091] In this embodiment of the invention, the firepower status of the stove is determined based on the first airflow value of the outer ring burner assembly and the second airflow value of the inner ring burner assembly. Since the airflow is not easily affected by environmental interference, firepower status detection based on airflow can make the firepower detection results more accurate, thereby improving the precision of the stove-stove linkage control.

[0092] In one embodiment, when the stove's firepower is at the first firepower state, the range hood's fan speed is adjusted to the first fan speed value; when the stove's firepower is at the second firepower state, the range hood's fan speed is adjusted to the second fan speed value; and when the stove's firepower is at the third firepower state, the range hood's fan speed is adjusted to the third fan speed value.

[0093] Specifically, the first firepower value in the first firepower state is greater than the second firepower value in the second firepower state, and the second firepower value is greater than the third firepower value in the third firepower state. The first wind force value is greater than the second wind force value, and the second wind force value is greater than the third wind force value.

[0094] In this embodiment of the invention, the range hood's airflow is controlled in conjunction with the heat output, ensuring that the airflow and heat output are always matched, thus improving the user experience.

[0095] In one embodiment, the range hood is turned off when the stove is off. In this embodiment, promptly turning off the range hood when the stove is off prevents it from operating ineffectively and saves energy.

[0096] In one embodiment, when the stove is off, the range hood is turned off after a certain delay. In this embodiment, turning off the range hood after a certain delay when the stove is off ensures that kitchen fumes are effectively removed, improving the user experience.

[0097] The following is combined Figure 3 The working mechanism of the stove-range linkage will be further explained.

[0098] After the stove is started, the first flow sensor and the second flow sensor acquire the first air flow value Q1 and the second air flow value Q2, respectively.

[0099] When both the first airflow value Q1 and the second airflow value Q2 are greater than the first preset airflow value Qa1 and the first airflow value Q1 is greater than the second airflow value Q2, the flow difference ΔQ between the first airflow value Q1 and the second airflow value Q2 is calculated.

[0100] When the flow difference ΔQ is greater than the second preset air flow value Qb1, it indicates that the gas is in the first flow state, and the stove's firepower state is determined to be in the first firepower state.

[0101] When the flow difference ΔQ is less than or equal to the second preset air flow value Qb1, it indicates that the gas is in the second flow state, and the stove firepower state is determined to be the second firepower state.

[0102] When both the first air flow value Q1 and the second air flow value Q2 are less than or equal to the first preset air flow value Qa1, it indicates that the air flow change is small and there is no gas flow in the stove, thus confirming that the stove is in the off state at this time.

[0103] When the second air flow value Q2 is greater than the first preset air flow value Qa1 and the first air flow value Q1 is less than the first preset air flow value Qa1, it indicates that the gas in the stove is in the third flow state, and it is determined that the stove is in the third firepower state at this time.

[0104] The stove's operating status information is sent to the range hood via the communication module, and the range hood adjusts the corresponding fan speed.

[0105] Among them, the first flow rate is greater than the second flow rate, which is greater than the third flow rate; the first firepower value of the first firepower state is greater than the second firepower value of the second firepower state, which is greater than the third firepower value of the third firepower state.

[0106] Example 3

[0107] Corresponding to the aforementioned embodiments of the firepower status detection method, the present invention also provides a firepower status detection device.

[0108] Figure 4This is a schematic diagram of a fire status detection device provided in an embodiment of the present invention. The device includes:

[0109] The first flow sensor 20 is deployed at the air inlet of the outer ring burner assembly to obtain the first air flow value of the outer ring burner assembly.

[0110] The second flow sensor 21 is deployed at the air inlet of the inner ring burner assembly to obtain the second air flow value of the inner ring burner assembly.

[0111] The first controller 31 is electrically connected to the first flow sensor 20 and the second flow sensor 21. The first controller 31 is used to execute the fire status detection method provided in any of the above embodiments.

[0112] In one embodiment, the interval between the first flow sensor 20 and the second flow sensor 21 is between one-third and one-third of the length of the opening in the cooktop chassis 11.

[0113] Example 4

[0114] Figure 5 This is a schematic diagram of a stove-range linkage control system provided in an embodiment of the present invention. The system includes a communication module 32, a second controller 33, and a fire status detection device provided in any of the above embodiments.

[0115] The firepower status detection device is used to detect the firepower status of the stove.

[0116] The communication module 32 connects the first controller 31 and the second controller 33 and is used for communication between the first controller 31 and the second controller 32.

[0117] The second controller 33 is used to receive the stove's firepower status through the communication module and adjust the range hood's fan speed according to the stove's firepower status.

[0118] For the apparatus embodiments, since they basically correspond to the method embodiments, the relevant parts can be referred to in the description of the method embodiments. The apparatus embodiments described above are merely illustrative and can be used to achieve the purpose of the present invention according to actual needs. Those skilled in the art can understand and implement them without creative effort.

[0119] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A method of detecting a state of a fire, characterized by, The application is applied to a stove, the stove comprises an outer ring fire cover assembly and an inner ring fire cover assembly, and the fire state detection method comprises the following steps: obtaining a first air flow value of the outer ring fire cover assembly; obtaining a second air flow value of the inner ring fire cover assembly; determining a stove fire state according to the first air flow value and the second air flow value; determining the stove fire state according to the first air flow value and the second air flow value, comprising: when the first air flow value and the second air flow value are both greater than a first preset air flow value and the first air flow value is greater than the second air flow value, determining a flow difference value of the first air flow value and the second air flow value; when the flow difference value is greater than a second preset air flow value, determining that the stove fire state is a first fire state; when the flow difference value is less than or equal to the second preset air flow value, determining that the stove fire state is a second fire state; wherein a first fire value of the first fire state is greater than a second fire value of the second fire state; when the second air flow value is greater than the first preset air flow value and the first air flow value is less than the first preset air flow value, determining that the stove fire state is in a third fire state; wherein a third fire value of the third fire state is less than the second fire value.

2. The method of claim 1, wherein, determining the stove fire state according to the first air flow value and the second air flow value, further comprising: when the first air flow value and the second air flow value are both less than or equal to the first preset air flow value, determining that the stove fire state is in an off fire state.

3. The method of any one of claims 1 or 2, wherein, further comprising: when the first air flow value is greater than the first preset air flow value and the second air flow value is less than the first preset air flow value, determining that the stove is in a fault state.

4. A method for controlling a cooking range in conjunction with a smoke, the method comprising the steps of: the smoke stove linkage control method comprises: determining a stove fire state; the stove fire state is determined according to the fire state detection method in any one of claims 1-3; adjusting a wind power state of an extractor hood according to the stove fire state.

5. The method of claim 4, wherein, adjusting the wind power state of the extractor hood according to the stove fire state, comprising: when the stove fire is in a first fire state, adjusting the wind power state of the extractor hood to a first wind power value; when the stove fire is in a second fire state, adjusting the wind power state of the extractor hood to a second wind power value; when the stove fire is in a third fire state, adjusting the wind power state of the extractor hood to a third wind power value; wherein a first fire value of the first fire state is greater than a second fire value of the second fire state, and the second fire value is greater than a third fire value of the third fire state; the first wind power value is greater than the second wind power value, and the second wind power value is greater than the third wind power value.

6. The method of claim 4, wherein, adjusting the wind power state of the extractor hood according to the stove fire state, further comprising: when the stove fire is in an off fire state, turning off the extractor hood.

7. A fire status detection device, characterized by comprising: the application is applied to a stove, and the device comprises: a first flow sensor arranged at an air inlet of an outer ring fire cover assembly of the stove, for obtaining a first air flow value of the outer ring fire cover assembly; a second flow sensor disposed at an air inlet of an inner ring flame cap assembly of the cooktop for obtaining a second air flow value of the inner ring flame cap assembly; a first controller electrically connected with the first flow sensor and the second flow sensor, the first controller being configured to execute the fire state detection method of any one of claims 1-3.

8. The fire state detection device of claim 7, wherein a distance between the first flow sensor and the second flow sensor is between one third and one of a length of a cooktop bottom plate opening.

9. A smoke range linkage control system, characterized by, the system comprises the fire state detection device of claim 7 or 8; a communication module connecting the first controller and the second controller; the second controller is configured to receive the fire state of the cooktop through the communication module and adjust a wind state of the range hood according to the fire state of the cooktop.

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