A U-shaped three-side partition gas curtain device installed in a range hood

Abstract

This invention discloses a U-shaped three-sided partition air curtain device installed in a range hood, including a blower installed inside the range hood, multiple evenly distributed air blowing pipes, a U-shaped air curtain pipe, and U-shaped air curtain nozzles arranged on the air curtain panel. The blower connects to the U-shaped air curtain pipe and the U-shaped air curtain nozzles on the air curtain panel installed under the hood through the air blowing pipes to form a U-shaped three-sided partition air curtain device. When the blower is activated, compressed air is sprayed downwards through the U-shaped air curtain pipe from the U-shaped air curtain nozzles to form a U-shaped three-sided vertical partition air curtain. Compared with the prior art, the U-shaped three-sided partition air curtain device installed in the range hood of this invention forms a U-shaped three-sided vertical partition air curtain by spraying air downwards from under the hood. It forms a closed air curtain chamber with the wall, which can confine the oil fumes generated during cooking within this air curtain chamber, preventing the oil fumes from escaping and preventing the disturbance of the outside air from affecting the oil fume extraction effect, reducing the passive inhalation of oil fumes by users, and avoiding adverse health effects.

Description

Technical Field

[0001] This invention relates to the technical field of range hoods, specifically to a U-shaped three-sided partition air curtain device installed in a range hood. Background Technology

[0002] Every day, cooking in homes or restaurants produces a large amount of oily fumes, which are harmful substances. Long-term inhalation of these fumes can be detrimental to health. Traditional range hoods create a negative pressure zone at the air intake under the hood when activated. Under this negative pressure, the cooking fumes are drawn into the exhaust duct and expelled outside the kitchen. However, due to variations in the size, shape, and height of cooking utensils, air disturbances caused by cooking, and changes in airflow within the kitchen, a significant amount of fumes escapes the negative pressure zone and is not drawn into the exhaust duct. This causes the fumes to permeate the kitchen and be inhaled by the user, negatively impacting their health. Summary of the Invention

[0003] To better address the adverse health effects of cooking fumes escaping during kitchen cooking, this invention provides a U-shaped three-sided partition air curtain device installed in a range hood to solve the aforementioned technical problem of cooking fume escape.

[0004] The specific technical solution adopted in this invention is as follows: a blower, multiple evenly distributed air ducts, a U-shaped air curtain pipe, and U-shaped air curtain nozzles arranged on the air curtain panel are installed inside the range hood. The blower connects the U-shaped air curtain pipe and the U-shaped air curtain nozzles arranged on the air curtain panel installed below the range hood through the multiple evenly distributed air ducts to form a U-shaped three-sided isolation air curtain device. When the range hood is started, the internal blower also starts simultaneously. The blower blows compressed air through the multiple evenly distributed air ducts into the U-shaped air curtain pipe. The compressed air is then sprayed downwards from the U-shaped air curtain nozzles arranged on the air curtain panel, which is tightly attached to the U-shaped air curtain pipe, forming a U-shaped three-sided vertical isolation air curtain. This U-shaped three-sided vertical isolation air curtain and the wall form a closed air curtain chamber. This closed air curtain chamber can confine the oil fumes generated during cooking within this air curtain chamber, preventing the oil fumes from escaping and also preventing air disturbance outside the air curtain from affecting the oil fume extraction effect.

[0005] The beneficial effects of this invention are that it provides a new technical solution for purifying kitchen fumes. Using this technical solution, the diffusion and escape of fumes can be significantly reduced, the kitchen can be purified, users can reduce the inhalation of fumes, and adverse health effects can be avoided. At the same time, the presence of the air curtain also helps to isolate the heat radiation generated during cooking from the user. Attached Figure Description

[0006] Figure 1This is a common shape of the range hood described in this invention, serving as an example of the implementation of this invention.

[0007] Figure 2 This is a bottom view of the range hood described in this invention, showing the hood, the air intake, and the U-shaped air curtain nozzles arranged on the air curtain panel.

[0008] Figure 3 This describes the U-shaped three-sided partition air curtain device of the present invention installed in a range hood.

[0009] Figure 4 This is a disassembly diagram of the main components of the range hood equipped with a U-shaped three-sided partition air curtain device according to the present invention.

[0010] Figure 5 This is a disassembly diagram of the main components of the U-shaped three-sided partition air curtain device described in this invention.

[0011] Figure 6 This is an assembly diagram of the U-shaped three-sided partition air curtain device described in this invention.

[0012] Figure 7 This refers to one type of U-shaped air curtain nozzle (small circular holes) on the air curtain panel described in this invention.

[0013] Figure 8 for Figure 7 A magnified view of the lower left corner.

[0014] Figure 9 This is another type (long, narrow slit) of the U-shaped air curtain nozzles on the air curtain panel described in this invention.

[0015] Figure 10 for Figure 9 A magnified view of the lower left corner.

[0016] Figure 11 The U-shaped air curtain tube described in this invention.

[0017] Figure 12 for Figure 11 A magnified view of the lower left corner.

[0018] In the picture: 1. Exhaust pipe, 2. Fume extractor, 3. Blower, 4. Air blowing duct, 5. Cover, 6. U-shaped air curtain nozzles on the air curtain panel, 7. Air intake, 8. U-shaped air curtain pipe. Detailed Implementation

[0019] The implementation and advantages of the present invention will be further described below with reference to the accompanying drawings and embodiments. It should be understood that the shape and size of the range hood and these embodiments are only for illustrating the present invention and do not constitute a limitation on the scope of the present invention. Any modifications, equivalent substitutions, or improvements made within the spirit and principle of the present invention shall fall within the scope of the claims defined in this application.

[0020] All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terms and names of components used herein are for the purpose of describing particular embodiments only and are not intended to limit the scope of this application. For clarity, details of some structures or components are not explicitly shown but are illustrated in simplified diagrams; these practical arrangements should not be construed as limiting the implementation of this invention.

[0021] Cooking in homes and restaurants produces a large amount of harmful cooking fumes. Therefore, households typically install range hoods above gas stoves to extract these fumes. When a range hood is turned on, a negative pressure zone is created at the air intake. Under this negative pressure, the fumes are drawn into the exhaust duct and expelled outside the kitchen. However, in reality, the size, shape, and height of the cookware used vary each time, resulting in different directions and ways of fumes escaping. Furthermore, cooking methods vary, leading to diverse fumes formation and turbulence around the gas stove and range hood. Additionally, the kitchen structure and airflow significantly influence the direction of fume escape. All these factors greatly affect the effectiveness and efficiency of the range hood, often resulting in a significant amount of fumes escaping and spreading throughout the kitchen, ultimately being inhaled by the user. Therefore, if a vertical partition is installed on the left, right, and front sides of the range hood, it can prevent the cooking fumes from escaping and also prevent external airflow from disturbing them. It is based on this consideration that the technical solution of this invention was developed.

[0022] This invention provides a U-shaped three-sided partition air curtain device installed in a range hood. Please refer to [link / reference]. Figure 1 , Figure 2 , Figure 3 , Figure 4 When the range hood is working, the blower (3) inside the range hood (5) starts to blow compressed air through multiple evenly distributed air blowing pipes (4) to the U-shaped air curtain pipe (8), and sprays it downward from the U-shaped air curtain nozzles (6) on the air curtain panel installed under the hood (5) that is closely attached to it, forming a U-shaped three-sided vertical partition air curtain, thereby confining the oil fumes in the closed chamber formed by the U-shaped three-sided air curtain and the wall, so that they can no longer drift away and escape. The various disturbances in the external airflow will not affect the extraction of oil fumes due to the presence of the air curtain.

[0023] Please see Figure 5 , Figure 6 , Figure 11 , Figure 12 The U-shaped three-sided partition air curtain device of the present invention is installed in the range hood. Multiple evenly distributed air blowing pipes (4) connected to the blower (3) are evenly connected to the U-shaped air curtain pipe (8), so that compressed air can be evenly blown to the U-shaped air curtain pipe (8) and evenly sprayed out from the U-shaped air curtain nozzles (6) on the air curtain panel.

[0024] Please see Figure 7 , Figure 8 , Figure 9 , Figure 10 The U-shaped three-sided partition air curtain device of the present invention, installed in a range hood, has U-shaped air curtain nozzles (6) arranged on the air curtain panel, which can be a row of evenly distributed small holes (see...). Figure 7 , Figure 8 It can also be a row of long, narrow slit nozzles (see...) Figure 9 , Figure 10 This allows compressed air, which is evenly blown into the U-shaped air curtain pipe (8) through multiple evenly distributed air blowing pipes (4), to be ejected from the small hole nozzle or narrow slit nozzle at a certain pressure, forming a vertical airflow curtain with a certain pressure and length. This vertical airflow curtain can play its due role in blocking the escape of oil fumes.

[0025] In the practical application of the technical solution of this invention, the power selection and air volume of the blower (3), the determination of whether the multiple evenly distributed air blowing pipes (4) are circular pipes or flat thin cavity parts, the number of pipes and their diameter, the aperture of the small holes or the size of the narrow slit nozzles of the U-shaped air curtain nozzles (6) on the air curtain panel, and other parameters will be further calculated and tested according to the specific application scenario. The specific numerical parameters are not given in the implementation examples of this invention, but this will not affect the establishment of the principle of this invention and the feasibility of its practical application.

Claims

1. A U-shaped three-sided partitioning air curtain device installed in a range hood, comprising a cover body (5) of the range hood, a blower (3) installed in the cover body (5), a plurality of uniformly distributed air blowing pipes (4), a U-shaped air curtain pipe (8), and air curtain nozzles (6) arranged in a U-shape on an air curtain panel installed below the cover body (5), characterized in that, The blower (3) in the cover (5) starts to blow compressed air into the U-shaped air curtain pipe (8) through the multiple evenly distributed blowing air pipes (4), and the air is sprayed downward from the U-shaped air curtain nozzles (6) on the air curtain panel installed below the cover and closely attached to the U-shaped air curtain pipe (8), forming a U-shaped three-sided vertical partition air curtain.

2. A U-shaped three-sided partitioning air curtain device installed in a range hood according to claim 1, characterized in that, The U-shaped air curtain pipe (8) and the U-shaped air curtain nozzles (6) on the air curtain panel are closely attached and arranged downward around the left and right sides and the front side of the cover (5) of the range hood.

3. A U-shaped three-sided partitioning air curtain device installed in a range hood according to claim 1, characterized in that, The blower (3) and the multiple evenly distributed blowing air pipes (4) are in uniform communication with the U-shaped air curtain pipe (8) and the U-shaped air curtain nozzles (6) on the air curtain panel, and the blower (3) evenly divides the compressed air into the U-shaped air curtain pipe (8) through the multiple evenly distributed blowing air pipes (4).

4. A U-shaped three-sided partitioning air curtain device installed in a range hood according to claim 1, characterized in that, The U-shaped air curtain nozzles (6) on the air curtain panel can be a row of small holes arranged in a U-shape, or a row of long and narrow slits arranged in a U-shape.

5. A U-shaped three-sided partitioning air curtain device installed in a range hood according to claim 1, characterized in that, The multiple evenly distributed blowing air pipes (4) can be round pipes or flat and thin cavity type parts.

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