Micro ceiling smoke hood

Abstract

This utility model discloses a micro-ceiling fume hood, including a hood body and an exhaust duct connected to the hood body. The bottom of the hood body has a first smoke collection chamber and a second smoke collection chamber. It also includes: a centrifugal separation unit disposed in the inlet area of ​​the first and second smoke collection chambers, used to perform primary separation of the inhaled oil fume aerosol through centrifugal force generated by rotating airflow; and a bidirectional airflow constraint unit disposed outside the hood body and surrounding it. This utility model filters oil fumes by setting up a centrifugal separation unit, generates a vertically downward airflow suppression curtain by setting up a first nozzle group to prevent oil fumes from spreading in all directions, and generates a horizontal airflow pointing towards the hood body by setting up a second nozzle group to guide the oil fumes to the exhaust area, assisting in oil fume extraction. Therefore, this micro-ceiling fume hood has the effect of improving oil fume purification efficiency.

Description

Technical Field

[0001] This application relates to the field of fume hood technology, and more particularly to micro ceiling fume hoods. Background Technology

[0002] A range hood, also known as a cooking hood or exhaust fan, is a kitchen appliance that purifies kitchen fumes. It is usually installed above the kitchen stove to quickly remove cooking fumes, purify indoor air, and reduce indoor pollution.

[0003] A search revealed that Chinese patent CN212108561U discloses a ceiling-mounted fume hood with an air curtain. Functional components are installed side-by-side on the ceiling to form a ceiling-like structure, facilitating the extraction of fumes from various parts of the kitchen and preventing the spread of fumes. A blower forms a downward-blowing air curtain through the air curtain panel to prevent the fumes from spreading. However, the blower in this fume hood only prevents the fumes from spreading and cannot assist in their extraction, resulting in low fume purification efficiency. Therefore, a micro-ceiling-mounted fume hood is proposed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a micro ceiling smoke hood to solve the problems mentioned in the background art.

[0005] The embodiments of this application adopt the following technical solutions:

[0006] A micro-ceiling fume hood includes a hood body and an exhaust duct connected to the hood body. The bottom of the hood body has a first smoke collection chamber and a second smoke collection chamber. The hood body also includes: a centrifugal separation unit disposed in the inlet area of ​​the first and second smoke collection chambers, used to perform primary separation of the inhaled oil fume aerosol by centrifugal force generated by rotating airflow; and a bidirectional airflow constraint unit disposed outside the hood body and surrounding the hood body, including a first nozzle group that generates a vertically downward airflow suppression curtain and a second nozzle group that generates a horizontal airflow pointing towards the hood body, used to constrain the oil fume diffusion path and guide it to the exhaust area.

[0007] Preferably, the bidirectional airflow constraint unit includes an airflow duct fixedly connected to the outside of the cover, the first nozzle group and the second nozzle group are both fixedly connected to the bottom of the airflow duct, the first nozzle group and the second nozzle group are both connected to the airflow duct, and the first nozzle group is located outside the second nozzle group.

[0008] Preferably, the centrifugal separation unit is a cyclone filter, and its air intake direction forms an angle with the direction of the centrifugal force.

[0009] Preferably, multiple sets of UV-C band ultraviolet lamps are fixedly connected inside both the first smoke collection chamber and the second smoke collection chamber.

[0010] Preferably, the bidirectional airflow constraint unit is externally fixedly connected to a displacement air supply unit that forms an enclosure, which is used to provide low-speed, uniform displacement fresh air to the kitchen work area and reduce turbulence intensity.

[0011] Preferably, an illumination unit is integrated at the bottom of the cover, and the illumination unit uses a light source that combines a wide beam and a focused beam.

[0012] The above-described technical solutions adopted in the embodiments of this application can achieve the following beneficial effects:

[0013] In this invention, a centrifugal separation unit is used to filter oil fumes. A first nozzle group is used to generate a vertically downward airflow suppression curtain to prevent oil fumes from spreading in all directions. A second nozzle group is used to generate a horizontal airflow pointing towards the hood to guide the oil fumes to the exhaust area and assist in the extraction of oil fumes. Thus, the micro ceiling fume hood has the effect of improving the oil fume purification efficiency. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0015] Figure 1 Here is one of the three-dimensional structural schematic diagrams of this utility model;

[0016] Figure 2 The second is a three-dimensional structural schematic diagram of this utility model;

[0017] Figure 3 This utility model is: Figure 2 Enlarged structural diagram at point A;

[0018] Figure 4 Here is a schematic diagram of the orthographic structure of this utility model.

[0019] In the diagram: 1. Cover; 2. First smoke collection chamber; 3. Second smoke collection chamber; 4. Centrifugal separation unit; 5. Two-way airflow constraint unit; 51. First nozzle group; 52. Second nozzle group; 53. Airflow pipeline; 6. UV-C band ultraviolet lamp tube; 7. Displacement air supply unit; 8. Lighting unit. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] The technical solutions provided by the various embodiments of this application are described in detail below with reference to the accompanying drawings.

[0022] Please see Figure 1-4 This utility model provides a micro ceiling smoke hood technical solution:

[0023] A micro-ceiling fume hood includes a hood body 1 and an exhaust duct connected to the hood body 1. The bottom of the hood body 1 has a first smoke collection chamber 2 and a second smoke collection chamber 3. The hood body 1 also includes: a centrifugal separation unit 4, which is disposed in the inlet area of ​​the first smoke collection chamber 2 and the second smoke collection chamber 3, for performing primary separation of the inhaled oil fume aerosol by using the centrifugal force generated by the rotating airflow; and a bidirectional airflow constraint unit 5, which is disposed outside the hood body 1 and surrounds the hood body 1, including a first nozzle group 51 that generates a vertically downward airflow suppression curtain and a second nozzle group 52 that generates a horizontal airflow pointing towards the hood body 1, for constraining the oil fume diffusion path and guiding it to the exhaust area.

[0024] Specifically, the oil fumes are filtered by the centrifugal separation unit 4, and a vertically downward airflow suppression curtain is generated by the first nozzle group 51 to prevent the oil fumes from spreading to the surroundings. The second nozzle group 52 generates a horizontal airflow pointing towards the hood 1 to guide the oil fumes to the exhaust area and assist in the extraction of oil fumes. Thus, the micro ceiling fume hood has the effect of improving the oil fume purification efficiency.

[0025] The bidirectional airflow constraint unit 5 includes an airflow duct 53 fixedly connected to the outside of the hood 1. Air is supplied to the airflow duct 53 by an outer shell air supply device such as a fan. The first nozzle group 51 and the second nozzle group 52 are both fixedly connected to the bottom of the airflow duct 53. The first nozzle group 51 and the second nozzle group 52 are both connected to the airflow duct 53. The first nozzle group 51 is located outside the second nozzle group 52. The first nozzle group 51 generates a vertically downward airflow suppression curtain, and the second nozzle group 52 generates a horizontal airflow pointing towards the hood 1, which is used to constrain the diffusion path of oil fumes and guide them to the exhaust area.

[0026] The centrifugal separation unit 4 is a cyclone filter, whose air intake direction forms an angle with the direction of the centrifugal force. The cyclone filter effectively collects oil fumes and water vapor, which then reach the first smoke collection chamber 2 and the second smoke collection chamber 3, and are then discharged from the exhaust duct, which is not shown in the figure.

[0027] The interiors of both the first smoke collection chamber 2 and the second smoke collection chamber 3 are fixedly connected to multiple sets of UV-C band ultraviolet lamps 6, which minimize oil stain accumulation, improve sanitation conditions, maximize fire safety, control emissions, significantly reduce odor emissions, and neutralize oil fume particles, vapors, and organic compounds that are not captured by the cyclone filter. By increasing the number of UV-C band ultraviolet lamps 6 to an appropriate level, they photolyze and oxidize oil fume molecules and VOCs.

[0028] The bidirectional airflow constraint unit 5 is externally fixedly connected to a displacement air supply unit 7 that forms an enclosure, which is used to provide low-speed uniform displacement fresh air to the kitchen work area, reduce turbulence intensity, and significantly reduce airflow in the kitchen. By reducing the flow rate of the fresh air introduced by the air supply duct, it is evenly distributed inside the device and the airflow is "layered". The fresh air is evenly dispersed at a very low speed without producing any airflow effect.

[0029] The bottom of the cover 1 is integrated with a lighting unit 8. The lighting unit 8 uses a combination of wide beam and focused beam light source, which is close to sunlight, providing better visual comfort and safety. It maintains a good balance between direct and diffuse light source. The concentration and diffusion of these light sources limit the generation of shadows, making objects more three-dimensional, while making the food being prepared clearer. It can provide uniform and comfortable lighting for all kitchen countertops while saving a lot of energy.

[0030] It also includes the EMS intelligent variable frequency energy-saving system, which is an intelligent demand control ventilation system. Through a non-contact temperature probe, it detects the temperature of the stove and then determines its working status. When the stove is off, it closes the corresponding exhaust vent above the stove, reduces the speed of the exhaust fan and the air supply fan, thereby reducing fan energy consumption and reducing the loss of air conditioning cooling. It can identify the current status of the cooking equipment and automatically adjust the exhaust volume of the fume hood according to actual needs to match the above status.

[0031] Working Principle: When this micro ceiling fume hood is in use, the centrifugal separation unit 4 first filters the oil fumes. The first nozzle group 51 generates a vertically downward airflow suppression curtain to prevent the oil fumes from spreading in all directions. The second nozzle group 52 generates a horizontal airflow pointing towards the hood 1, guiding the oil fumes to the exhaust area and assisting in the extraction of oil fumes. Multiple UV-C band ultraviolet lamps 6 reduce oil accumulation, improve hygiene conditions, and enhance fire safety. They control emissions, significantly reduce odor emissions, and neutralize oil fume particles, vapors, and organic compounds that are not captured by the cyclone filter. The lighting unit 8 provides better visual comfort and safety, maintaining a good balance between direct and diffused light sources. The concentration and diffusion of these light sources limit the generation of shadows, making objects more three-dimensional and making food being prepared clearer. While saving a lot of energy, it can provide uniform and comfortable lighting for all kitchen countertops, thus enabling the micro ceiling fume hood to improve the efficiency of oil fume purification.

[0032] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A micro-cornice smoke hood, comprising a hood body (1) and an exhaust duct connected to the hood body (1), a first smoke collecting cavity (2) and a second smoke collecting cavity (3) are formed at the bottom of the hood body (1) respectively, characterized in that, Also include: Centrifugal separation unit (4), provided in the entrance area of the first smoke collection cavity (2) and the second smoke collection cavity (3), used for primary separation of the inhaled oil smoke aerosol by the centrifugal force generated by the rotating airflow; The bidirectional airflow restriction unit (5) is arranged outside the cover body (1) and forms an enclosure for the cover body (1), which includes a first nozzle group (51) for generating a vertical downward airflow inhibition curtain and a second nozzle group (52) for generating a horizontal airflow directed to the cover body (1), which is used to restrict the oil smoke diffusion path and guide to the exhaust area.

2. The microcylinder ceiling cowl according to claim 1, characterized in that: The bidirectional airflow restriction unit (5) includes an airflow pipeline (53) fixedly connected to the outside of the cover body (1), the first nozzle group (51) and the second nozzle group (52) are fixedly connected to the bottom of the airflow pipeline (53), the first nozzle group (51) and the second nozzle group (52) are in communication with the airflow pipeline (53), and the first nozzle group (51) is located outside the second nozzle group (52).

3. The microcylinder ceiling cowl according to claim 1, characterized in that: The centrifugal separation unit (4) is a cyclone filter, and the air inlet direction forms an angle with the direction of the rotating centrifugal force.

4. The microcylinder smoke hood according to claim 1, wherein: The inside of the first smoke collection cavity (2) and the second smoke collection cavity (3) is fixedly connected with a plurality of UV-C wave band ultraviolet lamp tubes (6).

5. The microcylinder smoke hood according to claim 1, wherein: The outside of the bidirectional airflow restriction unit (5) is fixedly connected with a surrounding replacement air unit (7) for providing low-speed uniform replacement fresh air to the kitchen work area and reducing the turbulence intensity.

6. The micro-cornice smoke hood according to claim 1, wherein: The bottom of the cover body (1) is integrally provided with a lighting unit (8), and the lighting unit (8) adopts a combination of wide beam and focused beam light source.

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