Range hood with fireproof and lampblack purification functions

Abstract

The invention relates to a range hood with fireproof and lampblack purification functions and a fire extinguishing control system, and belongs to the technical field of range hoods. Comprising an air collecting cover which is internally provided with oil smoke purifying equipment; the oil fume purification equipment comprises a spray washing chamber and a core purifier; a water mist nozzle is arranged at a smoke inlet of the spray washing chamber; the water mist nozzle is mounted on the water spraying pipe; the spray pipe communicates with a water source; the lampblack purification equipment is communicated with the reaction water tank through a water return pipe, and a fireproof electromagnetic valve for controlling on-off is arranged on the water return pipe; and a flame detector is arranged at a smoke inlet of the spray washing chamber. The range hood disclosed by the invention has an oil smoke purification function and a fire extinguishing function, and cyclone oil-liquid separation is carried out on a mixture of oil smoke and water mist by arranging the water mist spray head and cooperating with the core purifier. The range hood has a good lampblack purification effect. According to the range hood, the water return pipe can be cut off when flames enter the oil smoke purification equipment, and the safety is improved by arranging the fire extinguishing control system and the fire extinguishing assembly.

Description

Technical Field

[0001] The invention relates to a range hood with fire prevention and oil fume purification functions and a fire extinguishing control system, belonging to the technical field of range hoods. Background Art

[0002] The range hood is a necessary kitchen appliance in people's kitchens and hotels and restaurants. The range hood exhausts the oil smoke into the room to maintain a good indoor environment. The oil smoke contains a large amount of smoke and dust, which will cause certain harm to the environment. In order to reduce the harm of oil smoke, an oil fume purification device can usually be installed in the range hood. However, the oil fume purification device installed in the existing range hood is relatively simple and its purification effect is limited.

[0003] In addition, when using a gas stove for cooking, especially when stir-frying, a large flame may be generated. This flame may enter the range hood. If the fire cannot be extinguished in time, it will damage the range hood and easily cause a fire. Summary of the invention

[0004] The purpose of the present invention is to provide a range hood with fire prevention and oil fume purification functions to solve the above technical problems.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is: A range hood with fire prevention and oil fume purification functions comprises an air collecting hood in which an oil fume purification device is installed; the oil fume purification device comprises a spray washing chamber and a core purifier; a water mist nozzle is arranged at the smoke inlet of the spray washing chamber; the water mist nozzle is installed on a water spray pipe; the water spray pipe is connected to a water source; the core purifier has an air outlet and a liquid outlet; the oil fume purification device is connected to a reaction water tank through a return pipe, and a fire prevention solenoid valve for controlling on and off is arranged on the return pipe; a flame detector is installed at the smoke inlet of the spray washing chamber.

[0006] A further improvement of the technical solution of the present invention is as follows: the spray washing chamber is arranged outside the core purifier to surround the core purifier; the air inlet and liquid outlet of the core purifier are located in the spray washing chamber; and the return pipe is connected to the lower part of the spray washing chamber.

[0007] A further improvement of the technical solution of the present invention is that the reaction water tank is connected to the water spray pipe through a pipeline.

[0008] A further improvement of the technical solution of the present invention is that the air outlet of the core purifier is connected to the smoke exhaust duct through a one-way smoke exhaust fire damper.

[0009] A further improvement of the technical solution of the present invention is that the core purifier has a cyclone separation structure for separating gas and liquid.

[0010] A fire extinguishing control system for a range hood with fire prevention and oil fume purification functions controls the above range hood. When a flame enters a core purifier, the control system automatically closes the fire prevention solenoid valve on the return pipe; the water level inside the core purifier rises rapidly due to the normal operation of the water mist nozzle; when the water level reaches the flooding position, the smoke exhaust channel will be flooded by the liquid; the flue ventilation is forcibly cut off to isolate the oxygen supply of the outside air to the fire point.

[0011] A further improvement of the above technical solution of the present invention is that the control system is linked with the fire alarm system and also has a mobile phone APP client, which sends alarms to the mobile phone APP client and each platform end through a wireless transmission function.

[0012] Due to the adoption of the above technical solution, the technical effects achieved by the present invention are as follows: The range hood of the present invention has the functions of oil fume purification and fire extinguishing. It purifies the oil fume preliminarily by arranging a water mist nozzle, cools and purifies the oil fume preliminarily in the spray washing chamber, and then cooperates with the core purifier to perform cyclonic oil-liquid separation on the mixture of oil fume and water mist to achieve fume purification. The range hood has a good effect on oil fume purification.

[0013] The range hood of the present invention is provided with a water return pipe to recycle water. At the same time, by providing a fire-proof electromagnetic valve on the water return pipe, the water return pipe can be cut off when a flame enters the oil fume purification device, thereby allowing water to accumulate in the oil fume purification device. When the water accumulates to a certain extent, the air entering the flue is cut off, and the flame is extinguished at the same time. The fire extinguishing control system and the fire extinguishing assembly are provided to improve safety.

[0014] The water mist nozzle provided in the range hood of the present invention not only has the function of preliminary cooling and purification of the oil fume, but also realizes the function of injecting water into the oil fume purification equipment through the control of the return pipe and the fireproof solenoid valve, thereby realizing the fire extinguishing function. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The structure of the present invention is schematically shown Figure 1 ; Figure 2 The structure of the present invention is schematically shown Figure 2 ; Among them, 1. Wind hood, 2. Spray washing room, 3. Core purifier, 4. Return pipe, 5. Fire solenoid valve, 6. Water spray pipe, 7. One-way smoke exhaust fire damper, 8. Smoke inlet, 9. Flame detector. DETAILED DESCRIPTION

[0016] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0017] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0018] The invention discloses a range hood with fire prevention and oil fume purification functions. The range hood can purify oil fume and also has a fire extinguishing function.

[0019] like Figure 1 , Figure 2 As shown, the range hood has an air collecting hood 1, and the air collecting hood 1 is arranged corresponding to the gas stove and is used to collect oil fume. An oil fume purification device is installed in the air collecting hood 1 to purify the oil fume. Specifically, the oil fume purification device includes a spray washing chamber 2 and a core purifier 3. The spray washing chamber 2 is a hollow structure with a certain space. The spray washing chamber 2 is provided with a smoke inlet 8, and a water mist nozzle is arranged at the smoke inlet 8 of the spray washing chamber 2. Under the action of the negative pressure fan, the oil fume can enter the range of the air collecting hood 1, and then enter the spray washing chamber 2 through the smoke inlet 8. When passing through the smoke inlet 8, the oil fume is mixed with a large amount of water mist, and then can be preliminarily cooled and purified in the spray washing chamber 2.

[0020] The range hood sprays water mist to the oil smoke through the water mist nozzle, so that the water mist is combined with the tiny smoke dust in the oil smoke, which is convenient for subsequent purification. The water mist nozzle is installed on the water spray pipe 6, and the water spray pipe 6 is connected to the water source. Under the action of the water pump, water is sprayed from the water mist nozzle.

[0021] The oil fume purification device of the range hood is provided with a core purifier 3, through which oil and liquid are separated and oil fume is thoroughly purified. The core purifier 3 has an air inlet, an air outlet and a liquid outlet. After the oil fume and water mist are combined, they continue to flow and enter the interior of the core purifier 3 from the air inlet of the core purifier 3, and oil and liquid separation and purification are performed inside the core purifier 3. Among them, the separated clean air is discharged into the flue; the separated liquid falls into the lower part of the oil fume purification device; a return pipe 4 is connected to the lower part of the oil fume purification device, and the oil fume purification device is connected to the reaction water tank through the return pipe 4, so that the separated liquid flows back into the reaction water tank through the return pipe. A fireproof electromagnetic valve 5 is provided on the return pipe 4, and the return pipe is controlled by the fireproof electromagnetic valve 5. When a flame occurs, the fireproof electromagnetic valve 5 controls the return pipe 4 to be closed, so that a large amount of water will accumulate in the oil fume purification device, which plays a role in extinguishing the flame.

[0022] In order to monitor the flame, a flame detector 9 is usually installed at the smoke inlet of the spray washing chamber 2. When flames enter with smoke, it can be detected in time, and then corresponding fire extinguishing measures can be initiated.

[0023] like Figure 1 , Figure 2 As shown, the oil fume purification device provided in the range hood is the main component for oil fume purification, and the oil fume purification device mainly includes a spray washing chamber 2 and a core purifier 3. Among them, the spray washing chamber 2 is a part with a cavity structure, and the spray washing chamber 2 is arranged on the periphery of the core purifier 3 to surround the core purifier 3, that is, the main body of the core purifier 3 is located in the spray washing chamber 2. The air inlet and the liquid outlet of the core purifier 3 are located in the spray washing chamber 2; the air outlet of the core purifier 3 is connected to the smoke exhaust duct, and more specifically, the air outlet of the core purifier 3 is connected to the smoke exhaust duct through a one-way smoke exhaust fire damper 7. Here, the return pipe 4 is connected to the lower part of the spray washing chamber 2, and the liquid falls into the lower part of the spray washing chamber 2, and then flows back to the reaction water tank through the return pipe 4, and the liquid is further separated from the oil in the reaction water tank, and discharged after the treatment reaches the standard. The water in the reaction water tank can be recycled, so the reaction water tank can also be connected to the water spray pipe 6 through a pipeline. The water supply for the water mist nozzle can be a clean original water source, or water from a reaction water tank, or better yet, a combination of the two water supply methods.

[0024] The core purifier 3 in the oil fume purification equipment preferably uses a purifier with a cyclone separation structure for separating gas and liquid. The core purifier 3 has spiral blades inside to make the combination of oil fume and water mist form a spiral cyclone flow, thereby realizing cyclonic oil-liquid separation.

[0025] The range hood can be provided with a plurality of oil fume purification devices along the extension direction of the wind collecting hood, in particular, a plurality of core purifiers 3 are provided, and the plurality of core purifiers 3 are arranged in a spray washing chamber 2. The spray washing chamber 2 is a large hood structure, and a plurality of water mist nozzles are provided at the smoke inlet 8 of the spray washing chamber. Arranging the plurality of core purifiers 3 in the spray washing chamber 2 can make full use of the space in the spray washing chamber 2, and providing the plurality of core purifiers 3 can improve the purification effect.

[0026] The range hood is also provided with a fire extinguishing control system for controlling the fire extinguishing of the range hood with fire prevention and oil fume purification functions. The control system receives the signal of the flame detector 9. When a flame enters the core purifier 3 or the spray washing chamber 2, the control system will send a signal to automatically close the fire prevention solenoid valve 5 on the return pipe 4. At this time, the water mist nozzle is in a normal working state. Therefore, the water level inside the core purifier 3 rises rapidly due to the normal working of the water mist nozzle; when the water level reaches a higher submerged position, the smoke exhaust channel will be submerged by liquid; the flue ventilation is forcibly cut off to isolate the oxygen supply of the outside air to the fire point.

[0027] The control system can also be linked with the fire alarm system and has a mobile phone APP client, which can send alarms to the mobile phone APP client and various platform terminals through wireless transmission function.

[0028] The fume purification equipment is installed in the kitchen's wind hood, located above the stove. When the smoke is inhaled, it starts to mix with a large amount of high-pressure water mist, and is initially cooled and purified in the spray washing chamber 2. Then it enters the core purifier 3 together with the water mist for thorough purification. At the same time, the gas and liquid are completely separated therein. The clean low-temperature gas after purification is discharged from the smoke exhaust duct through the one-way smoke exhaust fire damper 7. The grease-containing liquid flows into the reaction box with the water circulation system. The liquid after oil-liquid separation participates in the next circulation. The purification equipment is installed at the inlet of the air duct, isolating the ignition source of the frying stove below. With its powerful purification ability, it eliminates the oil and combustibles in the smoke, completely preventing the occurrence of flue fires.

[0029] The range hood of the present invention has the functions of oil fume purification and fire extinguishing. By arranging a water mist nozzle, the oil fume is initially cooled and purified in the spray washing chamber. The core purifier can perform cyclonic oil-liquid separation on the mixture of oil fume and water mist to achieve smoke purification. The range hood of the present invention is provided with a return pipe to recycle water, and by arranging a fireproof solenoid valve on the return pipe, the return pipe can be cut off when a flame enters the oil fume purification device, thereby allowing water to accumulate in the oil fume purification device, cutting off the air entering the flue, and extinguishing the flame at the same time. By arranging a fire extinguishing control system and a fire extinguishing component, the safety of use is improved.

[0030] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A range hood with fire prevention and oil fume purification functions, comprising an air collecting hood (1), characterized in that: An oil fume purification device is installed in the air collecting hood (1); the oil fume purification device comprises a spray washing chamber (2) and a core purifier (3); a water mist nozzle is arranged at the smoke inlet (8) of the spray washing chamber (2); the water mist nozzle is installed on a water spray pipe (6); the water spray pipe (6) is connected to a water source; the core purifier (3) has an air outlet and a liquid outlet; the oil fume purification device is connected to a reaction water tank through a return pipe (4), and a fire-proof electromagnetic valve (5) for controlling on and off is arranged on the return pipe (4); and a flame detector (9) is installed at the smoke inlet of the spray washing chamber (2).

2. The range hood with fire prevention and oil fume purification functions according to claim 1, characterized in that: The spray washing chamber (2) is arranged outside the core purifier (3) to surround the core purifier (3); the air inlet and liquid outlet of the core purifier (3) are located in the spray washing chamber (2); and the return pipe (4) is connected to the lower part of the spray washing chamber (2).

3. The range hood with fire prevention and oil fume purification functions according to claim 1, characterized in that: The reaction water tank is connected to the water spray pipe (6) through a pipeline.

4. The range hood with fire prevention and oil fume purification functions according to claim 1, characterized in that: The air outlet of the core purifier (3) is connected to the smoke exhaust duct via a one-way smoke exhaust fire damper (7).

5. The range hood with fire prevention and oil fume purification functions according to claim 1, characterized in that: The core purifier (3) has a cyclone separation structure for separating gas and liquid.

6. A fire extinguishing control system for a range hood with fire prevention and oil fume purification functions, characterized in that: Control the range hood as described in any one of claims 1 to 5, when a flame enters the core purifier (3), the control system automatically closes the fire-proof solenoid valve (5) on the return pipe (4); the water level inside the core purifier (3) rises rapidly due to the normal operation of the water mist nozzle; when the water level reaches the submerged position, the smoke exhaust channel will be submerged by the liquid; the flue ventilation is forcibly cut off, isolating the oxygen supply of the outside air to the fire point.

7. The fire extinguishing control system of a range hood with fire prevention and oil fume purification functions according to claim 5, characterized in that: The control system is linked to the fire alarm system and also has a mobile APP client, which sends alarms to the mobile APP client and various platform terminals through wireless transmission function.

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