Split type multi-point suction type oil fume system

Abstract

The utility model relates to range hood technical field, concretely is a kind of split type multi-point suction type oil fume system, including exhaust fan and the air distribution box with one air outlet end and multiple air suction end, exhaust fan is connected with the air outlet end of air distribution box by air pipe, and the one end of the multiple air suction end of air distribution box is respectively connected with the one end of smoke pipe, and the other end of smoke pipe is connected with smoke cover.The utility model is through split structure, kitchen is divided into multiple local suction area, by being installed with smoke cover in each local suction area, and being gathered in air distribution box place by smoke pipe, and being discharged to outdoor by air pipe, the layout of multi-point suction type is formed, the oil fume in kitchen is suctioned in all directions, effectively solve the problem of oil fume diffusion, with the effect of single exhaust fan multi-region suction, reduce product cost, user can control the on-off state of oil fume suction function in each area by air volume regulating valve, improve the practicability and flexibility of product.

Description

Technical Field

[0001] This utility model relates to the field of range hood technology, specifically a split-type multi-point suction range hood system. Background Technology

[0002] As one of the three major kitchen appliances, range hoods are extremely common; it's safe to say that wherever there's a kitchen stove, there's a range hood. Currently, the main structure of a range hood on the market consists of a high-powered exhaust fan and a large hood, connected by ductwork. From a structural design and installation perspective, current range hoods can only extract fumes from the area above the stove using the hood. However, due to user movement and the influence of hot oil, the speed at which fumes diffuse far exceeds the extraction speed of the range hood. Some fumes cannot be extracted by the hood above the stove, and these unextracted fumes spread throughout the kitchen, leaving a large amount of grease on the kitchen walls and the range hood itself. In open kitchens, fumes can even spread throughout the entire house, eventually leaving a layer of grease on the floors, walls, and furniture.

[0003] After a period of use, the range hood's smoke extraction effect becomes unsatisfactory, mainly because grease accumulates on the fan impeller, affecting its suction performance. Therefore, to maintain consistent suction performance, the fan impeller needs to be frequently disassembled and cleaned. However, the cleaning process is very cumbersome. As a result, many range hoods with self-cleaning functions have emerged on the market, but these products are much more expensive than ordinary range hoods, and their cleaning effect is limited; even after cleaning, the range hood's suction performance remains poor.

[0004] Some apartment types have both Chinese and Western kitchens. While Western kitchens focus on cooking methods such as boiling, baking, and mixing, their countertops are often combined with islands or dining tables. Although Western kitchens do not have the high-oil-smoke cooking methods of Chinese kitchens such as frying, stir-frying, and deep-frying, open-air grilling, hot pot, and toasting still produce oil fumes. At the same time, the smells produced during the cooking process are also very strong, making it difficult to quickly and effectively remove the smells from the apartment. Utility Model Content

[0005] The purpose of this invention is to provide a split-type multi-point suction fume extraction system to address the shortcomings of existing technologies. Through its split structure, the kitchen is divided into multiple local suction zones. By installing corresponding fume extraction hoods in multiple directions, including the top, sides, and bottom, a multi-point suction system is formed in the kitchen, which comprehensively extracts and exhausts as much of the fumes dispersed throughout the kitchen as possible, thus solving the problems in the aforementioned existing technologies.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A split-type multi-point suction fume extraction system includes an exhaust fan and an air distribution box having one air outlet and multiple air intakes. The exhaust fan is connected to the air outlet of the air distribution box via an air duct. The multiple air intakes of the air distribution box are each connected to one end of a smoke extraction pipe, and the other end of the smoke extraction pipe is connected to a smoke hood.

[0008] Furthermore, the fumigation hood is provided with a smoke exhaust port and a smoke inlet, the smoke exhaust port is connected to the smoke pipe, and the smoke inlet is detachably connected to an oil fume filter.

[0009] Furthermore, a baffle plate is provided inside the smoke hood between the smoke outlet and the oil fume filter.

[0010] Furthermore, the smoke hood has an installation opening on one side wall at the smoke inlet, and a groove for installing a fume filter is provided on the inner wall at the smoke inlet.

[0011] Furthermore, the smoke hood and the oil fume filter are connected by bolts.

[0012] Furthermore, an airflow regulating valve is provided at the connection between the air intake end of the air distribution box and the smoke extraction pipe.

[0013] Furthermore, the exhaust fan is a centrifugal fan.

[0014] Furthermore, the duct is a plastic duct or a sound-absorbing duct.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This utility model utilizes a split structure to divide the kitchen into multiple localized extraction zones, such as a stove extraction zone, a side extraction zone, and a top extraction zone. Each localized extraction zone is equipped with a corresponding fume hood, and the fumes are collected at a distribution box via fume extraction pipes and then exhausted outdoors through ductwork, forming a multi-point suction layout. This comprehensively extracts cooking fumes from the kitchen, effectively solving the problem of fume diffusion. Furthermore, it can be expanded to include independent fume hoods in open-plan western-style kitchen areas, island areas, and dining areas, providing the effect of a single exhaust fan connecting multiple fume hoods for multi-area extraction. This reduces product manufacturing and installation costs. Users can control the on / off status of the fume extraction function in each area via an airflow regulating valve, improving the product's practicality and flexibility.

[0017] In addition, by installing the exhaust fan near the opening of the building's flue, away from the source of the fumes, and by using a fume filter to filter the inhaled fumes, the contamination of the fan blades by the grease in the fumes is reduced. This ensures that the exhaust fan's suction power remains stable while greatly reducing the frequency of cleaning the fan blades, further reducing the product's operating costs. At the same time, the noise of the exhaust fan is eliminated through the silencer duct, effectively reducing indoor sound pollution. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure of a split-type multi-point suction fume system provided by this utility model;

[0019] Figure 2 A schematic diagram of the structure of a square smoke hood and a smoke filter element in a split-type multi-point intake fume system provided by this utility model;

[0020] Figure 3 A cross-sectional view of a square fume hood and fume filter element in a split-type multi-point intake fume system provided by this utility model;

[0021] Figure 4 A schematic diagram of the bottom structure of a square smoke hood in a split-type multi-point suction fume system provided by this utility model;

[0022] Figure 5 A schematic diagram of the structure of a conical smoke hood and a smoke filter element in a split-type multi-point intake fume system provided by this utility model;

[0023] Figure 6 A cross-sectional view of a conical smoke hood and a smoke filter element in a split-type multi-point intake fume system provided by this utility model;

[0024] Figure 7 A schematic diagram of the bottom structure of a conical smoke hood in a split-type multi-point suction fume system provided by this utility model;

[0025] Figure 8 A schematic diagram illustrating the usage state of a split-type multi-point suction fume extraction system provided by this utility model.

[0026] The attached figures are labeled as follows:

[0027] 1. Exhaust fan; 2. Air distribution box; 21. Air outlet; 22. Air intake; 3. Fume hood; 31. Smoke exhaust port; 32. Smoke intake port; 33. Guide plate; 34. Installation port; 35. Groove; 4. Air duct; 5. Smoke pipe; 51. Air volume regulating valve; 6. Oil fume filter; 61. Frame; 62. Filter cotton; 7. Building flue. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0029] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0030] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0032] For easier understanding, please refer to Figure 1 and Figure 8 This embodiment provides a split-type multi-point suction fume extraction system, including an exhaust fan 1, an air distribution box 2, and fume extraction hoods 3. The air distribution box 2 includes an air outlet 21 and multiple air intakes 22 connected in parallel. The positive pressure end of the exhaust fan 1 is connected to the building flue 7 via an air duct 4, and the negative pressure end of the exhaust fan 1 is connected to the air outlet 21 of the air distribution box 2 via an air duct 4. The multiple air intakes 22 of the air distribution box 2 are each connected to a fume extraction hood 3 via a fume extraction pipe 5. The multiple fume extraction hoods 3 are all fixedly installed in the smoking area, and each fume extraction hood 3 corresponds to a local suction area. When the fan is turned on, a negative pressure is generated at the air intake 22 of the air distribution box 2, and the fume in the corresponding area is sucked in by the multiple fume extraction hoods 3 distributed in the smoking area. The sucked-in fume is collected at the air outlet 21 of the air distribution box 2 through the fume extraction pipe 5, and finally discharged into the building flue 7 through the exhaust fan 1 and the air duct 4, completing the smoking action in the smoking area.

[0033] For easier understanding, please refer to Figures 2 to 7One end of the fume hood 3 is a smoke exhaust port 31, and the other end is a smoke intake port 32. The smoke exhaust port 31 is connected to the smoke extraction pipe 5 for smoke exhaust. A fume filter 6 is detachably connected to the smoke intake port 32. The fume filter 6 is used to intercept and filter the grease in the fumes that are drawn into the fume hood 3 by negative pressure from the smoke intake port 32, preventing the grease in the fumes from entering the interior of the fume hood 3. A guide plate 33 is fixedly installed inside the fume hood 3. Multiple guide plates 33 are spaced apart between the smoke exhaust port 31 and the fume filter 6. The guide plates 33 divide the internal cavity of the fume hood 3 into multiple guide channels to reduce the wind resistance inside the fume hood 3 and improve the negative pressure suction force of the fume hood 3. An installation port 34 is opened on one side wall of the fume hood 3 near the smoke intake port 32, and a groove 35 is provided on the inner wall of the smoke intake port 32. The fume hood 3 is bolted to the fume filter 6. The fume filter 6 is aligned with the mounting opening 34 of the fume hood 3 and inserted into the fume hood 3 along the groove 35. Finally, the fume hood 3 and the fume filter 6 are fixedly connected by bolts. Specifically, the fume filter 6 includes a hollow frame 61 and filter cotton 62 fixedly connected inside the frame 61. The width of the mounting opening 34 and the groove 35 is the same as the thickness of the frame 61. During installation, one side wall of the frame 61 is aligned with the mounting opening 34 of the fume hood 3 and inserted into the fume hood 3 along the groove 35 until the frame 61 abuts the deepest part of the groove 35 (i.e., the frame 61 cannot be inserted further into the fume hood 3). The fume hood 3 and the frame 61 are fixedly connected by four bolts located around the perimeter of the frame 61.

[0034] A flow rate regulating valve 51 is provided at the connection between the suction end 22 of the air distribution box 2 and the smoke extraction pipe 5. The flow rate regulating valve 51 is used to control the on / off state of the smoke extraction pipe 5 and the amount of air extracted. Preferably, the flow rate regulating valve 51 is electrically controlled. The exhaust fan 1 is preferably a centrifugal fan. The centrifugal fan can generate strong negative pressure through high-speed rotating centrifugal blades, providing sufficient air pressure and suction volume to effectively draw the oil fumes into the smoke hood 3 and sequentially through the oil fume filter 6, the smoke extraction pipe 5, the air distribution box 2, and finally discharge them to the building flue 7 through the duct 4. The duct 4 is a plastic pipe or a sound-absorbing duct, which can reduce the noise generated by the airflow and the exhaust fan 1 while ensuring the negative pressure suction effect, making the oil fume system quieter during operation and improving the user comfort of the oil fume system.

[0035] For easier understanding, please refer to Figures 2 to 8The fume hood 3 comes in various shapes. In this embodiment, the fume hood 3 is square and conical, and the corresponding fume filter 6 is square and round. During installation, the exhaust fan 1 is fixedly installed near the building flue 7. If the apartment does not have a building flue 7, it is installed near the exhaust port used to exhaust fumes. The positive pressure end of the exhaust fan 1 is connected to the building flue 7 or the exhaust port used to exhaust fumes through one duct 4, and the negative pressure end of the exhaust fan 1 is connected to the air outlet 21 of the air distribution box 2 through another duct 4. Two conical smoke hoods 3 are fixedly installed above the stove in the kitchen (the number of conical smoke hoods 3 can be freely selected according to the number of stoves). The smoke inlets 32 of the conical smoke hoods 3 face vertically downwards towards the stove, mainly for sucking up the fumes and heat generated in the stove area. A square smoke hood 3 is fixedly installed on each of the left and right sides of the stove, with the smoke inlets 32 facing horizontally into the kitchen, mainly for sucking up the fumes and heat drifting from the left and right sides of the stove. A square smoke hood 3 is fixedly installed above the conical smoke hoods 3, with the smoke inlets 32 facing horizontally into the kitchen, mainly for sucking up the fumes and heat floating on the kitchen ceiling. By sucking up fumes from multiple directions, a comprehensive fume extraction effect is achieved. In addition to the kitchen, which is essential in every household, when there are other areas in the house that require fume extraction, such as the western kitchen, island, or dining room, simply install the corresponding smoke hood 3 in that area and connect the exhaust outlet 31 of the smoke hood 3 to the suction end 22 of the air distribution box 2 through the smoke pipe 5. When fumes are present in the area and need to be extracted, the airflow regulating valve 51 controls the opening of the corresponding smoke extraction pipe 5 and adjusts the required airflow. When fumes are not needed in the area, the airflow regulating valve 51 controls the closing of the corresponding smoke extraction pipe 5. The fume hood 3, smoke extraction pipe 5, air distribution box 2, and air duct 4 are all equipped with dedicated mounting brackets for fixed installation on walls or wall cabinets. The fume filter 6 needs to be replaced promptly after a period of use to ensure effective fume filtration; the replacement procedure is simple and easy to follow.

[0036] Although the present invention has been described using the above preferred embodiments, it is not intended to limit the scope of protection of the present invention. Any changes and modifications made by those skilled in the art to the above embodiments without departing from the spirit and scope of the present invention shall still fall within the scope of protection of the present invention.

Claims

1. A split-type multi-point suction fume extraction system, characterized in that, It includes an exhaust fan (1) and an air distribution box (2) having one air outlet (21) and multiple air intakes (22). The exhaust fan (1) is connected to the air outlet (21) of the air distribution box (2) through an air duct (4). The multiple air intakes (22) of the air distribution box (2) are respectively connected to one end of a smoke pipe (5), and the other end of the smoke pipe (5) is connected to a smoke hood (3).

2. The split-type multi-point suction fume extraction system according to claim 1, characterized in that, The smoke hood (3) is provided with a smoke exhaust port (31) and a smoke inlet (32). The smoke exhaust port (31) is connected to the smoke pipe (5), and the smoke inlet (32) is detachably connected to an oil fume filter (6).

3. The split-type multi-point suction fume extraction system according to claim 2, characterized in that, Inside the smoke hood (3), there is a baffle plate (33) between the smoke outlet (31) and the oil fume filter (6).

4. The split-type multi-point suction fume extraction system according to claim 2, characterized in that, The smoking hood (3) has an installation opening (34) on one side wall at the smoking opening (32), and a groove (35) for installing the oil fume filter (6) is provided on the inner wall at the smoking opening (32).

5. The split-type multi-point suction fume extraction system according to claim 2, characterized in that, The fume hood (3) and the oil fume filter (6) are connected by bolts.

6. The split-type multi-point suction fume extraction system according to claim 1, characterized in that, The air volume regulating valve (51) is provided at the connection between the air intake end (22) of the air distribution box (2) and the smoke extraction pipe (5).

7. The split-type multi-point suction fume extraction system according to claim 1, characterized in that, The exhaust fan (1) is a centrifugal fan.

8. The split-type multi-point suction fume extraction system according to claim 1, characterized in that, The air duct (4) is a plastic pipe or a sound-absorbing air duct.

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