A linkage control device based on current detection

Abstract

The application relates to a linkage control device based on current detection, which comprises a kitchen cooking device and a smoke hood arranged above the kitchen cooking device, an executing mechanism is arranged on the smoke hood; further comprising: a current detection module which is inductively matched with a power supply circuit of the kitchen cooking device, and is used for inductively detecting a current signal without being directly electrically connected with the power supply circuit; the utility model discloses that the on-off state of the kitchen cooking device is monitored in real time through the current detection module, signal processing and wireless communication are combined, automatic opening and closing control of the executing mechanism is realized, an efficient linkage relationship between the kitchen cooking device and the smoke exhaust system is constructed, the smoke exhaust can be automatically controlled according to equipment start and stop without manual intervention, the intelligentialization and convenience of kitchen environment management are effectively improved. Compared with the traditional sensor-dependent or timing control mode, the application has the advantages of rapid response and accurate identification, is suitable for various kitchen appliances and complex working conditions, and significantly improves the energy saving and practicability of the smoke exhaust system.

Description

Technical Field

[0001] This application relates to the field of kitchen ventilation and smoke control technology, and in particular to a linkage control device based on current detection. Background Technology

[0002] With the increasing electrification of commercial kitchens and large canteens, electrically heated kitchen equipment such as stoves, steamers, ovens, fryers, and microwave ovens are widely used in daily cooking operations. These cooking devices typically release large amounts of fumes, steam, or odorous gases during operation. If these are not effectively and promptly discharged, they can easily cause kitchen air pollution, equipment corrosion, increased ambient temperature, and discomfort for workers, and even pose safety hazards. Therefore, exhaust systems have become an indispensable component of modern kitchens.

[0003] Currently, common smoke extraction systems typically consist of a fume hood, exhaust duct, and fan, with some systems also equipped with dampers to control smoke flow. However, in traditional smoke extraction systems, the opening and closing of dampers or fans often relies on manual operation or timer controllers, making it impossible to detect the on / off status of kitchen cooking equipment in real time, resulting in poor smoke extraction coordination. For example, if kitchen cooking equipment is on but the damper does not open in time, smoke may remain trapped inside the fume hood; conversely, if the damper remains open for an extended period after the cooking equipment is turned off, it may lead to energy waste and unnecessary air disturbance.

[0004] To achieve more intelligent smoke control, some technologies have attempted to use sensors (such as temperature sensors and smoke sensors) to automatically determine smoke exhaust demand. However, such solutions are often limited by the response speed, sensitivity, and installation location of the sensors, resulting in problems such as untimely response, high false trigger rate, and complex maintenance. Furthermore, they are poorly adaptable to multi-device and complex kitchen environments. Utility Model Content

[0005] To address the problems of untimely linkage control and low level of intelligence in existing smoke and exhaust systems mentioned in the background art, this application provides a linkage control device based on current detection.

[0006] The linkage control device based on current detection provided in this application adopts the following technical solution:

[0007] A linkage control device based on current detection includes kitchen cooking equipment and a fume hood installed above the kitchen cooking equipment, wherein an actuator is mounted on the fume hood; it also includes:

[0008] The current detection module works in conjunction with the power supply line of the kitchen cooking equipment to detect current signals without being directly electrically connected to the power supply line, thereby determining whether the kitchen cooking equipment is powered on and outputting an electrical signal.

[0009] The signal processing module, connected to the current detection module, is used to process the electrical signal, identify whether it meets the current characteristics for starting the kitchen cooking equipment, and output a start-up trigger signal.

[0010] A signal transmitting module, connected to the signal processing module, is used to send a control signal when the corresponding kitchen cooking equipment is detected to be powered on.

[0011] A signal receiving module is disposed on the actuator and is used to receive control signals emitted by the signal transmitting module;

[0012] The control module, connected to the signal receiving module, is used to drive the actuator to open or close according to the received control signal.

[0013] By adopting the above technical solution and setting up a current detection module, a signal processing module, and a signal transmission and reception module, automatic linkage control between the actuator and the kitchen cooking equipment is realized. Compared with the traditional timed or manual control method, this technical solution can sense the working status of the kitchen cooking equipment in real time, drive the corresponding actuator to open in time when the equipment starts, and close the actuator in time when the equipment stops. This significantly improves the response speed and automation level of the smoke exhaust system, reduces manual operation, and improves the safety of the kitchen environment and energy utilization efficiency.

[0014] Optionally, the current detection module is a high-precision current sensor.

[0015] By adopting the above technical solutions, the use of high-precision current sensors can ensure the accuracy and real-time performance of current detection; this enables precise identification of the power-on and power-off states of equipment, avoiding misjudgments or omissions, thereby providing a stable and reliable basic signal input for subsequent signal processing and linkage control, and improving the overall system's safety, reliability, and adaptability in complex power environments.

[0016] Optionally, the signal processing module includes a filtering circuit, an amplification circuit, and an analog-to-digital conversion circuit, and identifies the start-up characteristic signal based on a preset algorithm.

[0017] By employing the above technical solution, the signal processing module filters, amplifies, and performs analog-to-digital conversion on the received electrical signal to remove noise interference and extract effective current characteristic signals. Then, a preset algorithm analyzes the characteristic signals to determine whether the range hood is in the start-up state. When the detected current signal meets the preset range hood start-up current threshold and its change characteristics, the range hood is determined to be started, and the signal processing module outputs a start-up trigger signal to the signal transmitting module.

[0018] Optionally, the kitchen cooking equipment is one or a combination of at least two of the following: stove, steamer, rice steamer, fryer, and griddle.

[0019] By adopting the above technical solutions, it is possible to adapt to a variety of kitchen cooking equipment, including stoves, steamers, rice steamers, fryers, griddles and other main smoke exhaust source equipment, and also supports combined applications to expand its adaptability. It is suitable for kitchen scenarios of different sizes and equipment structures. In particular, in environments such as large canteens, chain restaurants and central kitchens, it can realize multi-source unified management and automatic control, reduce smoke exhaust blind spots and omissions, and significantly improve the overall smoke exhaust system's operating efficiency and intelligence level.

[0020] Optionally, the actuator is a damper, and it also includes a main pipe connected to the damper, with a power device connected to the end of the main pipe.

[0021] By adopting the above technical solution, the flue gas generated by multiple fume hoods can be uniformly collected and discharged, effectively improving space utilization and flue gas treatment efficiency.

[0022] Optionally, it also includes a branch pipe, which is connected in parallel to the main pipe and whose inner cavity is connected to the inner cavity of the main pipe, and the branch pipe is connected to the air valve.

[0023] By adopting the above technical solution, a branch pipe is set between the actuator and the main pipeline as a transition, so that the flue gas can be discharged more smoothly.

[0024] Optionally, the power equipment is an exhaust fan located at the end of the main pipeline.

[0025] By adopting the above technical solution, the exhaust fan at the end of the main duct serves as the power equipment, providing continuous and powerful suction power for the entire exhaust duct. This ensures that the exhaust gas from each branch duct can be efficiently collected into the main duct and discharged in a timely manner, effectively preventing backflow or residue of exhaust gas. It also ensures the stable operation of the system under conditions such as multi-point exhaust and long-distance ventilation, improves exhaust efficiency, and ensures a clean and refreshing kitchen environment.

[0026] Optionally, the actuator is an integrated machine.

[0027] By adopting the above technical solution, the start-up or shutdown of the integrated machine can be directly controlled through the linkage control device, which is convenient and quick.

[0028] Optionally, the current detection module, signal processing module, and signal transmission module are integrated on the same circuit board to form an integrated control unit.

[0029] By adopting the above technical solutions, the system size is significantly reduced, the wiring process is simplified, the data interaction efficiency between modules is improved, and the risk of signal interference is reduced.

[0030] Optionally, the signal transmitting module is a wireless transmitting module, and the signal receiving module is a wireless receiving module.

[0031] By adopting the above technical solution, signal transmission can be achieved through wireless signal transmission and structure. The wireless signal transmission method eliminates the need for wiring, does not require modification of kitchen cooking equipment, especially stoves, meets the safety standards for stove use, and improves the system's installation flexibility and on-site adaptability.

[0032] In summary, this application includes at least one of the following beneficial technical effects:

[0033] This invention uses a current detection module to monitor the on / off status of kitchen cooking equipment in real time. Combined with signal processing and wireless communication, it achieves automatic start-stop control of the actuator, establishing a highly efficient linkage between the kitchen cooking equipment and the exhaust system. Exhaust can be automatically controlled based on equipment start-stop without manual intervention, effectively improving the intelligence and convenience of kitchen environment management. Compared to traditional sensor- or timed control methods, it has the advantages of fast response, accurate identification, and simple installation. It is suitable for various kitchen appliances and complex operating conditions, significantly improving the energy efficiency and practicality of the exhaust system. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of this utility model;

[0035] Figure 2 This is a system flowchart of this utility model;

[0036] Figure 3 This is a schematic diagram illustrating the working principle of this utility model;

[0037] Figure 4 This is a structural diagram of another embodiment of the present invention.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Kitchen cooking equipment; 2. Fume hood; 3. Actuator; 4. Branch pipe; 5. Main pipe; 6. Exhaust fan; 7. Current detection module; 8. Signal processing module; 9. Signal transmitting module; 10. Signal receiving module; 11. Actuator control module. Detailed Implementation

[0040] The present application will be further described in detail below with reference to the accompanying drawings.

[0041] like Figure 1-3As shown, this application discloses a linkage control device based on current detection, including a kitchen cooking appliance 1 and a fume hood 2 installed above the kitchen cooking appliance 1. An actuator 3 is installed on the top of the fume hood 2. In this example, the actuator 3 is a damper. More specifically, the fume hood 2 is connected to a branch pipe 4, and the damper is installed inside the branch pipe 4. When the damper is open, the fume hood 2 is connected to the branch pipe 4. Alternatively, in other embodiments, the fume hood 2 can be directly connected to the main pipe 5 (e.g., ...) via the damper. Figure 4 (As shown).

[0042] In this example, kitchen cooking equipment 1 is a stove. However, kitchen cooking equipment 1 can also be a steamer, rice steamer, fryer, griddle, or other electric cooking equipment that generates oil fumes and steam, or a combination of multiple cooking equipment. A main pipe 5 is connected to the top of the branch pipe 4 above the fume hood 2, and a power device, an exhaust fan 6, is connected to the end of the main pipe 5. Multiple branch pipes 4 are connected in parallel to the main pipe 5, so that a single exhaust fan 6 can be used as a power source to achieve the smoke extraction effect. Understandably, in a large kitchen, multiple main pipes 5 can be installed, and the number of exhaust fans 6 can also be designed differently according to actual working conditions.

[0043] It also includes a current detection module 7, a signal processing module 8, a signal transmission module 9, a signal receiving module 10, and a control module 11.

[0044] In this example, the current detection module 7 works in conjunction with the power supply line of the kitchen cooking equipment 1 to detect current signals without direct electrical connection to the power supply line, thereby determining whether the kitchen cooking equipment 1 is powered on and outputting an electrical signal. Specifically, the current detection module 7 is a high-precision current sensor. A wire is connected in parallel from the power supply line (live wire) of the kitchen cooking equipment 1, and its end is connected to the screw of the current detection module 7 distribution box. When powered on, the high-precision current sensor can detect the current signal, specifically based on an inductor coil, detecting alternating current through magnetic field induction. It is a non-contact sensing device. This structure will not cause any interference to the kitchen cooking equipment 1, i.e., there is no regulatory risk from stove supervision departments. It can monitor the current signal of the kitchen cooking equipment 1 in real time and convert the current signal into an electrical signal output. It can accurately capture the current changes of the kitchen cooking equipment 1 at the moment of startup and during operation, and can effectively distinguish the normal startup current of the kitchen cooking equipment 1 from other abnormal current fluctuations.

[0045] The signal processing module 8, connected to the current detection module 7, processes the electrical signal, identifies whether it meets the current characteristics required for starting the kitchen cooking equipment 1, and outputs a start-up trigger signal. The signal processing module 8 includes a filter circuit, an amplifier circuit, and an analog-to-digital converter circuit, and identifies the start-up characteristic signal based on a preset algorithm. That is, the signal processing module 8 can extract effective characteristic signals that characterize the start-up state of the kitchen cooking equipment 1, and analyze and judge the processed signal using a preset algorithm. When a signal that meets the start-up characteristics of the kitchen cooking equipment 1 is detected, a start-up trigger signal is output.

[0046] The signal transmitting module 9, connected to the signal processing module 8, is used to send a control signal when the corresponding kitchen cooking device 1 is detected to be powered on; that is, the signal transmitting module 9 receives the start trigger signal output by the signal processing module 8 and transmits the signal wirelessly via radio frequency; the signal transmitting module 9 uses a low-power, high-interference-resistant radio frequency chip, operates in a specific frequency band, and can achieve stable and reliable signal transmission, and the transmission distance meets the requirements of kitchen use scenarios.

[0047] The signal receiving module 10 is disposed on the actuator 3 and is used to receive the control signal sent by the signal transmitting module 9 and convert the received wireless signal into an electrical signal for output. The module has high sensitivity receiving performance, can accurately capture weak wireless signals, and process them effectively.

[0048] The control module 11 is connected to the signal receiving module 10 and is used to drive the actuator 3 to open or close according to the received control signal. That is, the control module 11 receives the electrical signal output by the signal receiving module 10 and controls the opening action of the air valve on the fume hood 2 according to the received signal. When a start trigger signal is received, the control module 11 drives the motor to drive the air valve to open quickly to a preset angle to ensure that the oil fumes can be discharged smoothly.

[0049] The current detection module 7, signal processing module 8, and signal transmission module 9 are integrated on the same circuit board to form an integrated control unit.

[0050] Signal transmitting module 9 is a wireless transmitting module, and signal receiving module 10 is a wireless receiving module, enabling signal transmission wirelessly. Furthermore, it is understood that in other embodiments, wired transmission may also be used.

[0051] This current-detection-based linkage control device, when in operation, includes the following steps:

[0052] Step 1: Current detection: The current detection module 7 monitors the current in the power supply circuit of the kitchen cooking equipment 1 in real time, acquires the current signal, and converts it into an electrical signal to be transmitted to the signal processing module 8.

[0053] Step 2: Signal Processing and Judgment: The signal processing module 8 filters, amplifies, and performs analog-to-digital conversion on the received electrical signal to remove noise interference and extract the effective current characteristic signal. Then, it analyzes the characteristic signal using a preset algorithm to determine whether the kitchen cooking equipment 1 is in the start-up state. When the detected current signal meets the preset start-up current threshold and change characteristics of the kitchen cooking equipment 1, it is determined that the kitchen cooking equipment 1 is started, and the signal processing module 8 outputs a start-up trigger signal to the signal transmitting module 9.

[0054] Step 3, Wireless Signal Transmission: After receiving the start trigger signal, the signal transmission module 9 modulates it into a wireless radio frequency signal and transmits it into the surrounding space according to the set frequency and power.

[0055] Step 4: Wireless signal reception and processing: After receiving the wireless radio frequency signal sent by the signal transmitting module 9, the signal receiving module 10 converts it into an electrical signal and transmits it to the control module 11.

[0056] Step 5, Linkage Control: The control module 11 analyzes the received electrical signal. When it confirms that the signal is a valid start-up trigger signal, the drive motor opens the range hood's air valve, causing the air valve to rotate to the preset opening angle, and the range hood starts working. When the kitchen cooking equipment 1 stops working, the current detection module 7 detects that the current signal is lower than the preset stop threshold. The signal processing module 8 outputs a stop signal, and the signal transmitting module 9 sends the stop signal to the signal receiving module 10. After receiving the stop signal, the control module 11 closes the air valve.

[0057] This linkage control device has the following advantages:

[0058] 1. High degree of automation: No need for users to manually turn on the range hood and air valve. Automatic wireless linkage is achieved through current detection of kitchen cooking equipment, improving the convenience and comfort of users.

[0059] 2. High Reliability: Based on current detection, the system can accurately determine the operating status of the kitchen cooking equipment 1, avoiding false triggering caused by other interference factors. The wireless communication module adopts a low-power, high anti-interference design to ensure stable and reliable signal transmission, unaffected by the complex kitchen environment.

[0060] 3. Easy installation: It adopts a wireless linkage method, eliminating the need to lay complicated connecting cables between the kitchen cooking equipment 1 and the range hood, reducing installation difficulty and cost, and making it suitable for various kitchen environments.

[0061] 4. Energy Saving and Consumption Reduction: Both the wireless transmitter and receiver modules adopt a low-power design, reducing the equipment's energy consumption while ensuring normal operation, thus meeting energy conservation and environmental protection requirements. Simultaneously, the air damper automatically opens and closes according to the operating status of the kitchen cooking equipment 1, avoiding unnecessary prolonged opening and further saving energy.

[0062] Understandably, the actuator 3 can be either the aforementioned air valve or a kitchen exhaust hood (used for collecting and exhausting fumes). It does not have an internal air valve structure, and the control module 11 can directly control the exhaust fan of the exhaust hood to achieve exhaust and thus achieve the effect of linkage control.

[0063] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A linkage control device based on current detection, characterized in that, Includes kitchen cooking equipment (1) and actuators (3); also includes: The current detection module (7) is in synergy with the power supply line of the kitchen cooking equipment (1) to detect current signals without direct electrical connection with the power supply line, thereby determining whether the kitchen cooking equipment (1) is powered on and outputting an electrical signal. The signal processing module (8) is connected to the current detection module (7) and is used to process the electrical signal, identify whether the current characteristics of the kitchen cooking equipment (1) are met, and output the start-up trigger signal. The signal transmitting module (9) is connected to the signal processing module (8) and is used to send a control signal when the corresponding kitchen cooking equipment (1) is detected to be powered on. A signal receiving module (10) is disposed on the actuator (3) and is used to receive control signals emitted by the signal transmitting module (9); The control module (11) is connected to the signal receiving module (10) and is used to drive the actuator (3) to open or close according to the received control signal.

2. The linkage control device based on current detection according to claim 1, characterized in that, The current detection module (7) is a high-precision current sensor.

3. The linkage control device based on current detection according to claim 1, characterized in that, The signal processing module (8) is equipped with a filter circuit, an amplifier circuit and an analog-to-digital converter circuit, and identifies the start-up characteristic signal based on a preset algorithm.

4. The linkage control device based on current detection according to claim 1, characterized in that, The kitchen cooking equipment (1) is one or a combination of at least two of the following: stove, steamer, rice steamer, fryer, and griddle.

5. The linkage control device based on current detection according to claim 1, characterized in that, The actuator (3) is a wind valve. A fume hood (2) is provided above the kitchen cooking equipment (1). It also includes a main pipe (5), which is connected to the wind valve. A power device is connected to the end of the main pipe (5).

6. The linkage control device based on current detection according to claim 5, characterized in that, It also includes a branch pipe (4), which is connected in parallel to the main pipe (5) and its inner cavity is connected to the inner cavity of the main pipe (5). The branch pipe (4) is connected to the air valve.

7. The linkage control device based on current detection according to claim 5, characterized in that, The power equipment is an exhaust fan (6) located at the end of the main pipeline (5).

8. The linkage control device based on current detection according to claim 1, characterized in that, The actuator (3) is an all-in-one machine.

9. The linkage control device based on current detection according to claim 1, characterized in that, The current detection module (7), signal processing module (8) and signal transmission module (9) are integrated on the same circuit board to form an integrated control unit.

10. The linkage control device based on current detection according to claim 1, characterized in that, The signal transmitting module (9) is a wireless transmitting module, and the signal receiving module (10) is a wireless receiving module.

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