Oil fume capturing and purifying system

Abstract

The utility model provides a kind of oil fume capture net discharge system, it includes: first flue duct, the end of the first flue duct is connected to outdoor, and its end is provided with net discharge integrated equipment;Multiple second flue ducts, the second flue duct is communicated with first flue duct, and each branch pipe is connected on the second flue duct, and the air inlet of each branch pipe is equipped with exhaust fan. The oil fume capture net discharge system, not only can accurately capture the oil fume of each pollution point, use exhaust fan to carry out single exhaust, but also can selectively adjust the flow area of each pollution point corresponding branch pipe. Also can control the on-off of each second exhaust duct and first exhaust duct according to need, not only can realize the overall treatment and removal of oil fume but also can prevent the accumulation of oil fume in pipeline, more can adjust air volume according to actual need, realize energy saving and emission reduction.

Description

Technical Field

[0001] This utility model relates to the field of kitchen exhaust, and in particular to an oil fume capture and purification system. Background Technology

[0002] In existing commercial kitchen exhaust systems, centralized terminal purification fans are commonly used as the core power source, providing a fixed air volume output through constant frequency operation. Front-end exhaust branch ducts typically only have simple metal filters or lack pre-filtration devices, and all exhaust branch ducts operate in a normally open mode. Terminal purification equipment treats VOCs gases using activated carbon adsorption or electrostatic devices, without any tiered purification measures. The overall system operation logic is a constant air volume mode throughout the day, making it impossible to adjust operating parameters based on the actual usage of the stoves. Due to inadequate vibration and noise reduction measures by businesses, the vibration and noise generated by the equipment can severely impact the daily operations of businesses and the operation of surrounding residents and facilities. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide an oil fume capture and purification system.

[0004] This utility model solves the above-mentioned technical problems through the following technical solution: an oil fume capture and purification system, comprising:

[0005] The first exhaust duct is connected to the outside at its end, and a clean exhaust device is installed at its end.

[0006] Multiple second exhaust ducts are provided, each of which is connected to the first exhaust duct. Each second exhaust duct is connected to a branch pipe, and each branch pipe is equipped with an auxiliary exhaust fan at its air inlet.

[0007] Optionally, each branch pipe is equipped with a solenoid valve to control the flow area of ​​each branch pipe.

[0008] Optionally, a rotating cleaning mesh is provided at the air inlet of the auxiliary exhaust fan.

[0009] Optionally, the integrated purification and exhaust equipment includes at least one of an activated carbon module, a volatile organic compound (VOCs) treatment module, and an oil fume and odor treatment module, and the integrated purification and exhaust equipment also includes a fan.

[0010] Optionally, it also includes a control device, which includes a display module for displaying operating parameters, a wireless communication device, and control buttons.

[0011] Optionally, the air inlet of each branch pipe is set corresponding to the stove, and the stove is equipped with an opening detection device, the opening detection device being connected to the control device.

[0012] Optionally, a solenoid valve is provided at the connection between the second exhaust pipe and the first exhaust pipe to control the opening and closing of the second exhaust pipe.

[0013] The significant advantages of this invention are as follows: This oil fume capture and purification system can not only accurately capture oil fumes from various pollution points and use auxiliary exhaust fans for individual exhaust, but also selectively adjust the flow area of ​​the branch pipes corresponding to each pollution point. Furthermore, it can control the connection and disconnection between the second and first exhaust ducts as needed. This not only achieves overall treatment and removal of oil fumes, but also prevents the accumulation of oil fumes in the ducts, and allows for airflow adjustment according to actual needs, thus achieving energy conservation and emission reduction. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the fume capture and purification system according to an embodiment of the present invention.

[0015] Figure 2 This is a schematic diagram of each branch pipe of the oil fume capture and purification system according to an embodiment of the present invention. Detailed Implementation

[0016] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment as an example.

[0017] like Figure 1 As shown, the oil fume capture and purification system disclosed herein includes a first exhaust duct 10, the end of which is connected to the outside, and an integrated purification and purification device 30 is installed at the end of which;

[0018] Multiple second exhaust pipes 20 are provided, each of which is connected to a first exhaust pipe 10. Each second exhaust pipe is connected to a branch pipe 40, and each branch pipe 40 is equipped with an auxiliary exhaust fan at its air inlet.

[0019] like Figure 1 , 2 As shown, in this exhaust system, all air inlets are directed at a single point of pollution generating oil fumes, such as the stove 100. All the oil fumes are then collected through a second exhaust duct and converged into a first exhaust duct, from which the treated fumes are discharged outdoors. The second exhaust duct connects to various branch pipes, each with an auxiliary exhaust fan at its air inlet. These fans effectively capture and absorb the oil fumes from each pollution point, and the treated fumes are then discharged to the outside using the integrated exhaust system 30 at the end of the first exhaust duct.

[0020] Each branch pipe 40 is equipped with a solenoid valve 41 to control the flow area of ​​each branch pipe. When the stove corresponding to the branch pipe 40 is ignited, the solenoid valve of that branch pipe opens the branch pipe, and the auxiliary exhaust fan starts working.

[0021] Furthermore, a rotating cleaning mesh is installed at the air inlet of the exhaust fan. The exhaust fan is, for example, a small fan with a maximum speed of 2600 r / min. The rotating mesh performs preliminary interception of particulate matter in the oil fume pollutants generated during cooking, avoiding the situation where pollutants adhere to the pipe and cannot be purified by the downstream purification device in a long pipe.

[0022] Furthermore, the integrated purification and exhaust equipment includes at least one of an activated carbon module, a VOCs treatment module, and an oil fume and odor treatment module, and also includes a fan. This tiered purification scheme can alleviate the purification pressure on end-point purification equipment, extend the cleaning and maintenance cycle, and the rotating mesh at the air inlet of the front-end auxiliary exhaust fan can be disassembled and cleaned regularly by staff, for example, once every two weeks, before reuse, thus reducing the cost of purification consumables.

[0023] The system also includes a control device 50, which includes a display module 51 for displaying operating parameters, a wireless communication device 52, and control buttons 53. The solenoid valves of each branch pipe are connected to the control device via the wireless communication module.

[0024] A solenoid valve 11 is installed at the connection between the second and first exhaust ducts to control the opening and closing of the second exhaust duct. This solenoid valve at the connection between the second and first exhaust ducts is also connected to the control device via a wireless communication module.

[0025] Furthermore, the air inlets of each branch pipe are set corresponding to the stove, and the stove is equipped with an opening detection device 110, which is connected to the control device.

[0026] The control device is used to acquire the signal of the stove being turned on, and flexibly select the opening degree of the corresponding branch solenoid valve and the opening and closing of the solenoid valve at the connection between the second exhaust pipe and the first exhaust pipe.

[0027] During use, when the stove is ignited, the detection device, such as a time-displacement sensor, is activated, transmitting the ignition start signal wirelessly to the control device. The control device then controls the motor and network disk in the corresponding branch pipe to receive the signal and start at the set power. The control device also counts the number N of ignition start signals from the front end and calculates the required air volume using the formula Q=K×∑(Qn×αn), where Qn is the required air volume for a single stove; K is the redundancy coefficient, for example, 1.2; and αn is the stove status coefficient, i.e., 0 for off and 1 for on. Simultaneously, because the stove is working, the control device sends a signal to the solenoid valve at the connection between the second and first exhaust ducts in the kitchen. The second exhaust duct opens to ensure ventilation. The fan of the integrated ventilation system achieves stepless frequency adjustment from 10% to 100% based on the variable frequency controller and algorithm, with a response time of less than 2 seconds.

[0028] In large commercial complexes, star-rated hotels, and hospitals, where multiple kitchens exist on different floors and share a single terminal fan power source, the primary vertical control of the main kitchen pipe is prioritized during daily use. Kitchen branch pipes that are not in use are kept closed to ensure airflow to the kitchens where cooking has begun. Then, the secondary horizontal control of the branch pipes corresponding to the stoves is implemented. Only the branch pipes corresponding to the stoves that are cooking are activated with small fans to assist in exhaust. The airflow can be adjusted according to demand, minimizing airflow waste.

[0029] Compared to traditional multi-point control solutions, when the control device detects the start-up signal of the stove at the front end, it can also prioritize the detection of the start-up status of the kitchen branch pipe, reducing the time required to calculate the operating status of all stoves, resulting in faster response of the fan equipment and a better experience of coordinated operation between the range hood and the stove.

[0030] Within large commercial complexes, each business is an independent catering shop. The hotel's catering department is also divided into breakfast, lunch, and dinner kitchens, each with different working hours and closing times. Tiered control can directly control the opening and closing of ventilation at each stage, ensuring that the opening or closing of ventilation by a single business will not affect other catering businesses.

[0031] Moreover, when the front-end auxiliary exhaust fan needs cleaning, maintenance, or repair, traditional multi-point control solutions cannot affect the cooking of other kitchens or businesses. In such cases, the air duct is still ventilating during maintenance, which is not conducive to maintenance or cleaning work. It is necessary to wait until all the stoves in the system are turned off, and maintenance cannot be completed in time. This type of solution directly cuts off the branch pipe or the second exhaust pipe, and the overall operation and maintenance environment is not affected by the overall system ventilation, which is more convenient and faster.

Claims

1. A fume capture and purification system, characterized in that, It includes: The first exhaust duct is connected to the outside at its end, and a clean exhaust device is installed at its end. Multiple second exhaust ducts are provided, each of which is connected to the first exhaust duct. Each second exhaust duct is connected to a branch pipe, and each branch pipe is equipped with an auxiliary exhaust fan at its air inlet.

2. The fume capture and purification system as described in claim 1, characterized in that, Each branch pipe is equipped with a solenoid valve to control the flow area of ​​each branch pipe.

3. The fume capture and purification system as described in claim 1, characterized in that, A rotating cleaning mesh is installed at the air inlet of the auxiliary exhaust fan.

4. The oil fume capture and purification system as described in claim 1, characterized in that, The integrated purification and exhaust equipment includes at least one of an activated carbon module, a volatile organic compound treatment module, and an oil fume and odor treatment module, and also includes a fan.

5. The oil fume capture and purification system as described in claim 1, characterized in that, It also includes a control device, which includes a display module for displaying operating parameters, a wireless communication device, and control buttons.

6. The oil fume capture and purification system as described in claim 5, characterized in that, The air inlets of each branch pipe are set to correspond to the stove, and the stove is equipped with an opening detection device, the signal of which is connected to the control device.

7. The oil fume capture and purification system as described in claim 1, characterized in that, A solenoid valve is provided at the connection between the second exhaust duct and the first exhaust duct to control the opening and closing of the second exhaust duct.

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