Stove and furnace end and smoke stove linkage system thereof

Abstract

The utility model provides a stove and a furnace end and smoke stove linkage system thereof. The stove comprises an inner ring fire cover, an outer ring fire cover, an inner ring thermocouple, an outer ring thermocouple and a first controller, inner ring fire holes are formed in the side face of the inner ring fire cover. Outer ring fire holes are formed in the side surface of the outer ring fire cover; the inner ring thermocouple is located on the outer side of the inner ring fire cover and aligned with the inner ring fire hole, the outer ring thermocouple is located on the inner side of the outer ring fire cover and aligned with the outer ring fire hole, and the first controller is electrically connected with the inner ring thermocouple and the outer ring thermocouple. The thermocouples are arranged on the outer side of the inner ring fire cover and the inner side of the outer ring fire cover of the stove burner, and the special fire holes are respectively arranged to ensure that flames can be fully close to the thermocouples, so that the fire power state of the stove burner is accurately detected, and the problem that other detection equipment is easy to damage when detecting the fire power state is solved.

Description

Technical Field

[0001] This utility model relates to the field of household appliances, and in particular to a stove and its burner and range hood linkage system. Background Technology

[0002] Cooktops with integrated flame level detection are becoming increasingly popular. These products typically use infrared temperature sensors to detect the flame level, or pressure and flow sensors to detect the airflow in the inner and outer rings. However, infrared detection is easily affected by environmental factors, leading to inaccurate flame level readings. Pressure and flow sensors, on the other hand, need to be placed inside the burner's flow path for accurate measurements. These instruments are usually designed for operation below 85°C, while the actual operating temperature of the burner exceeds 100°C, making these devices highly susceptible to damage. Therefore, in flame level detection, inaccurate flame level readings and equipment damage are common problems due to environmental and temperature factors. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology in firepower detection, which often results in inaccurate detection of the firepower of the stove due to environmental and temperature reasons and easy damage to the detection equipment. The present invention provides a stove and its burner and range hood linkage system.

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

[0005] This utility model provides a stove burner head, including: an inner ring burner cap, an outer ring burner cap, an inner ring thermocouple, an outer ring thermocouple, and a first controller; the inner ring burner cap has an inner ring burner hole on its side; the outer ring burner cap has an outer ring burner hole on its side.

[0006] The inner ring thermocouple is located outside the inner ring flame cap and aligned with the inner ring flame hole. The outer ring thermocouple is located inside the outer ring flame cap and aligned with the outer ring flame hole. The first controller is electrically connected to the inner ring thermocouple and the outer ring thermocouple respectively.

[0007] Optionally, the number of inner ring flame holes is at least two, and each inner ring flame hole is aligned with the inner ring thermocouple;

[0008] And / or, the number of outer ring flame holes is at least two, and each outer ring flame hole is aligned with the outer ring thermocouple.

[0009] Optionally, the inclination angle of the centerline of the inner ring fire hole is a first inclination angle.

[0010] Optionally, the inclination angle of the centerline of the outer ring fire hole is a second inclination angle.

[0011] Optionally, the burner of the stove further includes: a first amplifier; the input terminal of the first amplifier is connected to the inner ring thermocouple, and the output terminal of the first amplifier is connected to the first controller.

[0012] Optionally, the burner of the stove further includes: a second amplifier; the input terminal of the second amplifier is connected to the outer ring thermocouple, and the output terminal of the corresponding first amplifier is connected to the first controller.

[0013] Optionally, the burner head of the stove further includes an insulation plate, wherein the inner ring thermocouple and the outer ring thermocouple are respectively fixed on both sides of the insulation plate.

[0014] A stove, comprising the burner head of any of the stoves described above.

[0015] A range hood and cooktop linkage system includes a second controller, a range hood, and a cooktop as described above.

[0016] Optionally, the range hood includes a fan, which is electrically connected to the second controller;

[0017] And / or, the gas pipeline of the stove is connected to the burner, and the gas pipeline is equipped with a solenoid valve, which is electrically connected to the second controller.

[0018] The positive and progressive effects of this utility model are as follows: by setting thermocouples on the outer side of the inner ring burner cap and the inner side of the outer ring burner cap of the stove burner, and setting special fire holes to ensure that the flame can fully approach the thermocouples, the firepower status of the stove burner is accurately detected, which solves the problem that other detection devices are easily damaged when detecting firepower status. Attached Figure Description

[0019] Figure 1 This is a structural diagram of the burner head of a stove provided as an exemplary embodiment of the present invention.

[0020] Figure 2 A circuit connection diagram of a range hood and stove linkage system provided for an exemplary embodiment of this utility model.

[0021] Figure 3 A control flowchart of a range hood and stove linkage system is provided as an exemplary embodiment of this utility model. Detailed Implementation

[0022] The present invention will be described more clearly and completely below with reference to the accompanying drawings, but this does not limit the present invention to the scope of the described embodiments.

[0023] In this embodiment of the invention, prefixes such as "first" and "second" are used merely to distinguish different descriptive objects and do not limit the position, order, priority, quantity, or content of the described objects. The use of ordinal numbers and other prefixes to distinguish descriptive objects in this embodiment of the invention does not constitute a limitation on the described objects. The description of the described objects is found in the claims or the context of the embodiments, and the use of such prefixes should not constitute unnecessary limitations. Furthermore, in the description of this embodiment, unless otherwise stated, "multiple" means two or more.

[0024] Figure 1 A structural diagram of the burner head of a stove provided for an exemplary embodiment of the present utility model includes: an inner ring burner cap 1, an outer ring burner cap 2, an inner ring thermocouple 3, an outer ring thermocouple 4, and a first controller; the inner ring burner cap 1 has an inner ring burner hole 5 on its side; the outer ring burner cap has an outer ring burner hole 6 on its side;

[0025] The inner ring thermocouple 3 is located outside the inner ring burner cap 1 and aligned with the inner ring burner hole 5. The outer ring thermocouple 4 is located inside the outer ring burner cap 2 and aligned with the outer ring burner hole 6. The first controller is electrically connected to the inner ring thermocouple 3 and the outer ring thermocouple 4 respectively.

[0026] After ignition, the burner of the gas stove is divided into an inner flame and an outer flame. The inner ring burner cap 1 and the outer ring burner cap 2 guide the gas to form a stable flame and protect it from external wind interference. An inner ring thermocouple 3 is installed on the outside of the inner ring burner cap 1, and an inner ring flame hole 5 is provided on the inner ring burner cap 1. An outer ring thermocouple 4 is installed on the inside of the outer ring burner cap 2. During combustion, the inner ring flame approaches the inner ring thermocouple 3 through the inner ring flame hole 5, and the outer ring flame approaches the outer ring thermocouple 4 through the outer ring flame hole 6. The inner ring thermocouple 3 and the outer ring thermocouple 4 are composed of two conductors of different materials, which can be metal or alloy. The two conductors are connected at one end and heated, and separated at the other end. Since the thermoelectric potential coefficients of the two conductors are different, a thermoelectric potential is generated when the temperature of the heated end changes. By detecting the thermoelectric potential, the current flame status can be determined.

[0027] The specific method for judgment is as follows: When a gas stove is cooking normally, it has a stable high-power electromotive force (EMF) V1 and other EMFs at different flame levels. The greater the power, the greater the EMF. The conversion formula between power and EMF can be expressed as: P3 = P1 + P2 = K1 * V1 * A1 + K2 * V2 * A2

[0028] Where P3 is the total power, P1 is the inner ring power, P2 is the outer ring power, K1 is the inner ring power conversion factor, K2 is the outer ring power conversion factor, V1 is the measured value of the inner ring electromotive force, V2 is the measured value of the outer ring electromotive force, A1 is the inner ring burner area, and A2 is the outer ring burner area. Higher power indicates stronger firepower.

[0029] This embodiment accurately detects the firepower status of the stove burner by installing thermocouples on the outer side of the inner ring burner cap and the inner side of the outer ring burner cap, and by setting dedicated flame holes to ensure that the flame can fully approach the thermocouples. This solves the problem that other detection devices are easily damaged when detecting firepower status.

[0030] In one embodiment, the number of inner ring flame holes 5 is at least two, and each inner ring flame hole 5 is aligned with the inner ring thermocouple 3.

[0031] And / or, the number of outer ring flame holes 6 is at least two, and each outer ring flame hole 6 is aligned with the outer ring thermocouple 4.

[0032] In this embodiment, there are at least two inner ring flame holes and two outer ring flame holes. The number of flame holes determines the contact area between the inner and outer flames and the thermocouple. The larger and more complete the contact area, the higher the detection accuracy of the thermocouple. Alignment between the flame holes and the thermocouple further improves the detection accuracy. The specific number of flame holes can be determined according to the structure of the stove's burner.

[0033] This embodiment improves the reliability and accuracy of thermocouple detection by setting the number of inner and outer ring flame holes and aligning the flame holes with the thermocouple.

[0034] In one embodiment, the inclination angle of the centerline of the inner ring fire hole 5 is a first inclination angle.

[0035] The first tilt angle in this embodiment was obtained through multiple experiments.

[0036] In this embodiment, the tilt angle of the inner ring flame hole is limited. A flame hole with a certain tilt angle can make it easier for the flame to pass through the flame hole and thus better approach the thermocouple, accurately control the flame combustion direction, improve the accuracy of detection, reduce carbon buildup on the inner ring flame cap, keep the inner ring flame cap clean, extend its service life, and the tilt angle of the flame hole can also ensure that the flame is not disturbed by wind or other environmental factors during combustion.

[0037] In one embodiment, the inclination angle of the centerline of the outer ring fire hole 6 is a second inclination angle.

[0038] The second tilt angle in this embodiment was obtained through multiple experiments.

[0039] In this embodiment, the tilt angle of the outer ring flame hole is limited. A flame hole with a certain tilt angle can make it easier for the flame to pass through the flame hole and thus better approach the thermocouple, accurately control the flame combustion direction, improve the accuracy of detection, reduce carbon buildup on the outer ring flame cap, keep the outer ring flame cap clean, extend its service life, and the tilt angle of the flame hole can also ensure that the flame is not disturbed by wind or other environmental factors during combustion.

[0040] In one embodiment, the burner of the stove further includes: a first amplifier; the input of the first amplifier is connected to an inner ring thermocouple 3, and the output of the first amplifier is connected to a first controller.

[0041] In this embodiment, the potential difference generated by the thermocouple is usually converted into a very weak voltage signal, in the millivolt (mV) range. In order to make the voltage signal strong enough for easy processing and reading, a first amplifier is added to the circuit between the inner ring thermocouple 3 and the first controller to amplify the generated voltage signal.

[0042] This embodiment adds a first amplifier to the circuit of the inner ring thermocouple and the first controller, so that the voltage signal can resist external electromagnetic interference and improve the accuracy of detection.

[0043] In one embodiment, the burner of the stove further includes: a second amplifier; the input of the second amplifier is connected to an outer ring thermocouple 4, and the output of the first amplifier is connected to a first controller.

[0044] In this embodiment, the potential difference generated by the thermocouple is usually converted into a very weak voltage signal, in the millivolt (mV) range. In order to make the voltage signal strong enough for easy processing and reading, a second amplifier is added to the circuit between the outer ring thermocouple 4 and the first controller to amplify the generated voltage signal.

[0045] This embodiment adds a second amplifier to the circuit between the inner ring thermocouple and the first controller, enabling the voltage signal to resist external electromagnetic interference and improving the accuracy of detection.

[0046] In one embodiment, the burner head of the stove further includes: an insulation plate, with an inner ring thermocouple and an outer ring thermocouple fixed to both sides of the insulation plate.

[0047] In this embodiment, an insulation plate is provided between the inner ring thermocouple 3 and the outer ring thermocouple 4. The insulation plate can isolate the heat generated by the inner ring thermocouple 3 and the outer ring thermocouple 4, ensuring that each thermocouple only measures the temperature of its own location, avoiding mutual interference and affecting the test results.

[0048] This embodiment improves the accuracy and reliability of the detection by placing an insulation plate between the inner and outer ring thermocouples to avoid mutual interference between the inner and outer flames in the detection of the corresponding thermocouples.

[0049] A stove, comprising the burner head of any of the stoves described in the above embodiments.

[0050] A range hood and cooktop linkage system includes a second controller, a range hood, and a cooktop as described in the above embodiments.

[0051] Figure 2A circuit connection diagram of a range hood and stove linkage system is provided as an exemplary embodiment of the present invention. The range hood includes a fan, which is electrically connected to a second controller.

[0052] And / or, the gas pipeline of the stove is connected to the burner, and a solenoid valve is installed on the gas pipeline, which is electrically connected to the second controller.

[0053] In this embodiment, the inner and outer ring thermocouples in the burner of the stove are electrically connected to the second controller, which is also electrically connected to the fan and the solenoid valve. During stir-frying, a large amount of oil fumes are generated. To prevent the fumes from escaping and to fully capture them, the stove-hood linkage system needs to increase the airflow and delay shutting off the range hood for a certain period. When not stir-frying, less oil fumes are generated, so the airflow of the range hood can be reduced to decrease power consumption.

[0054] This embodiment sets up the circuit connection relationship of the range hood and stove linkage system so that the system can prevent oil fumes from escaping and fully capture oil fumes in stir-frying scenarios, and save power consumption in non-stir-frying scenarios.

[0055] Figure 3 The present invention provides a control flowchart for a stove-range hood linkage system as an exemplary embodiment. First, the stove is started. A thermocouple detects the current heat level and sends the detection result to a second controller. The fan starts at standard airflow. The second controller calculates the real-time power using the thermocouple detection result and determines the current heat level based on the real-time power. High heat ranges from (0.8 to 1) times the maximum power, medium heat ranges from (0.4 to 0.8) times the maximum power, and low heat ranges from (0 to 0.4) times the maximum power. When the system is determined to be in high heat mode, the cooking duration T is recorded. 1. When the cooking mode is determined to be medium heat, record the cooking duration T2; when the cooking mode is determined to be low heat, record the cooking duration T3; the second controller determines the cooking scenario based on the heat level and duration. When the cooking scenario is determined to be stir-fry, the fan output air volume is adjusted to the maximum air volume, and the fan is delayed in turning off for 5 minutes after the stove is turned off; when the cooking scenario is determined to be other scenarios, the fan maintains the standard air volume, and is delayed in turning off for 2 minutes after the stove is turned off; when the cooking scenario is determined to be steaming or boiling, the fan output air volume is reduced to the low air volume, and the fan is turned off immediately after the stove is turned off.

[0056] For example, in a stir-fry scenario, the calculation for the delay in turning off the fan is as follows:

[0057] When the stir-frying time T4 is ≥ 6 minutes, the delayed closing time T5 is 5 minutes.

[0058] When the stir-frying time T4 is less than 6 minutes, the delayed shutdown time T5 = 5 * T4 / 6 minutes. T5 ≥ 2 minutes. The reason for setting the delayed shutdown time T5 to 5 minutes is as follows: The standard airflow is 20 cubic meters per minute. A 5-minute delay can purify 100 cubic meters (20 * 5 = 100 cubic meters). Based on a typical residential floor height of 2.2 meters, this purifies 45.5 square meters (100 / 2.2 = 45.45 square meters). This includes a standard kitchen area of ​​6 square meters, a standard dining room of 8 square meters, and a standard living room of 20 square meters, considering ventilation escape at 2 cubic meters per minute. Therefore, 6 + 8 + 20 + 2 * 5 = 44 square meters, close to 45.5 square meters. The specific delayed shutdown time can be customized by the user.

[0059] The stir-frying process involves simple calculations as follows:

[0060] First step: Heat the pan from 25℃ to 180℃

[0061] From Q=P*T=c*m*△t (P represents power, T represents time, c represents specific heat capacity, m represents mass, and △t represents time), we know that the heating time of the pot is T=c*m*△t / (P*U1); in this formula, c and m are the specific heat capacity and mass of the pot, and U1 is the conduction loss coefficient of the pot. The heating time is about 30s.

[0062] The second process: the oil is heated from 25℃ to 200℃; the heating time T = c*m*△t / (P*U2); in this formula, c and m are the specific heat capacity and mass of the oil, and U2 is the oil conduction loss coefficient. The heating time is about 30 seconds.

[0063] The third step: The ingredients are cooked from 25℃ to 100℃, which takes about 3-4 minutes, and the pot is cooled for 1 minute.

[0064] This process involves a continuous supply of heat; the food absorbs heat from the system, causing its temperature to rise. Simultaneously, some oil absorbs more heat than it loses, continuing to heat up until it reaches its smoke point (approximately 220°C) and evaporates. Oil fumes are produced throughout the entire cooking process, until the cookware cools to 220°C. Some of these fumes escape during the extraction process by the range hood, and in severe cases, may even reach the living room. Therefore, after turning off the heat during stir-frying, delay turning off the range hood for several minutes to allow it to thoroughly purify the indoor oil fumes.

[0065] In this embodiment, the second controller calculates the real-time power using the thermocouple detection results, determines the current firepower status based on the real-time power, determines the cooking scenario based on the firepower status, and calculates the fan shutdown time, so as to prevent the oil fumes from escaping and fully capture the oil fumes during cooking.

[0066] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model 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 this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A stove burner, characterized in that, include: The device includes an inner ring flame cap, an outer ring flame cap, an inner ring thermocouple, an outer ring thermocouple, and a first controller; the inner ring flame cap has an inner ring flame hole on its side; the outer ring flame cap has an outer ring flame hole on its side. The inner ring thermocouple is located outside the inner ring flame cap and aligned with the inner ring flame hole. The outer ring thermocouple is located inside the outer ring flame cap and aligned with the outer ring flame hole. The first controller is electrically connected to the inner ring thermocouple and the outer ring thermocouple respectively.

2. The burner head of the stove as described in claim 1, characterized in that, The number of inner ring flame holes is at least two, and each inner ring flame hole is aligned with the inner ring thermocouple. And / or, the number of outer ring flame holes is at least two, and each outer ring flame hole is aligned with the outer ring thermocouple.

3. The burner head of the stove as described in claim 1, characterized in that, The inclination angle of the centerline of the inner ring fire hole is the first inclination angle.

4. The burner head of the stove as described in claim 1, characterized in that, The inclination angle of the centerline of the outer ring fire hole is the second inclination angle.

5. The burner head of the stove as described in claim 1, characterized in that, The stove burner also includes: a first amplifier; the input terminal of the first amplifier is connected to the inner ring thermocouple, and the output terminal of the first amplifier is connected to the first controller.

6. The burner head of the stove as described in claim 1, characterized in that, The stove burner also includes a second amplifier; the input of the second amplifier is connected to the outer ring thermocouple, and the output of the first amplifier is connected to the first controller.

7. The burner head of the stove as described in claim 1, characterized in that, The stove burner also includes an insulation plate, with the inner ring thermocouple and the outer ring thermocouple fixed to both sides of the insulation plate.

8. A stove, characterized in that, Includes the burner head of the stove as described in any one of claims 1 to 7.

9. A range hood and stove linkage system, characterized in that, It includes a second controller, a range hood, and a cooktop as described in claim 8.

10. The range hood and stove linkage system as described in claim 9, characterized in that, The range hood includes a fan, which is electrically connected to the second controller; And / or, the gas pipeline of the stove is connected to the burner, and the gas pipeline is equipped with a solenoid valve, which is electrically connected to the second controller.

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