Range hood

Abstract

The range hood comprises an air outlet pipe, an independent purification device is movably inserted in an air outlet of the air outlet pipe, and the independent purification device comprises a machine shell, a purification filter sieve, an ionization ozone generator and a UV lamp; oil fume passes through the first filter sieve, ozone, sulfur dioxide and ammonia gas are oxidized and separated, then peculiar smell is removed, after the oil fume enters the air duct, the ionization ozone generator removes harmful substances, bacteria and peculiar smell in air, the oil fume passes through the ultraviolet lamp, toxic substances and bacteria in the air are supplemented and removed, and the air quality is improved. Finally, the oil smoke passes through a second filter sieve, redundant odor molecules such as ozone, sulfur dioxide and ammonia gas in the air are further oxidized and separated, then clean and fresh air is exhausted, and a good filtering and purifying effect is achieved; after long-time use, the independent purification device can be conveniently detached and replaced, so that the purification effect is improved, and the user experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, in particular to a range hood. Background Art

[0002] Range hoods are commonly used appliances in kitchens. Fume purifiers can purify oil fumes to remove harmful substances in the oil fumes. For example, substances such as PM2.5, benzene and bacteria in the oil fumes can be purified by the oil fume purifier, making the gas exhausted from the oil fume purifier cleaner and safer. However, existing oil fume purifiers are usually integrated with range hoods. After long-term use, the oil fume purifiers cannot be replaced, which affects the purification effect and reduces the user experience. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the first embodiment of the utility model proposes an independent purification device, including a housing, a purification filter screen, an ionized ozone generator, and a UV lamp; the housing is provided with an air inlet end and an air outlet end, and an air duct is provided between the air inlet end and the air outlet end; the purification filter screen is divided into a first filter screen and a second filter screen, the first filter screen is installed at the air inlet end, and the second filter screen is installed at the air outlet end; the ionized ozone generator is installed in the housing, and the ionized ozone generator is used to release ozone into the inner cavity of the housing; the UV lamp is installed in the housing, and the UV lamp is used to irradiate ultraviolet rays into the inner cavity of the housing.

[0004] The utility model has at least the following beneficial effects:

[0005] The oil fume passes through the first filter screen to concentrate the ozone, sulfur dioxide, ammonia and other odor molecules in the air on the surface of the molecular sieve, and oxidize and separate them to remove the odor. After the oil fume enters the air duct, the ionization ozone generator removes harmful substances, bacteria and odor in the air. The oil fume then passes through an ultraviolet lamp with a wavelength of 254nm to additionally remove toxic substances and bacteria in the air, and simultaneously decomposes the excess ozone produced by the high-voltage ionization generator. Finally, the oil fume passes through the second filter screen to further concentrate the excess ozone, sulfur dioxide, ammonia and other odor molecules in the air on the surface of the molecular sieve, and oxidize and separate them, and then discharge clean and fresh air with good filtering and purification effects.

[0006] According to some embodiments of the utility model, a wind pressure sensor is further included. The wind pressure sensor extends toward the air duct. The wind pressure sensor is installed at one side of the air inlet end. The wind pressure sensor is controllably connected to the ionization ozone generator and the UV lamp.

[0007] According to some embodiments of the utility model, the wind pressure sensor, the ionization ozone generator, and the UV lamp are installed in an electric control protection box, and the electric control protection box is arranged on one side of the air duct.

[0008] According to some embodiments of the utility model, the electric control protection box includes a first installation chamber and a second installation chamber, the first installation chamber is provided with a first window facing the air duct, and the second installation chamber is provided with a second window facing the air duct.

[0009] According to some embodiments of the present invention, an ionized ozone generator is installed in the first installation chamber.

[0010] According to some embodiments of the present invention, a UV lamp is installed in the second installation chamber.

[0011] According to some embodiments of the present invention, connecting ears are symmetrically arranged on the second filter screen, and the connecting ears are located at the air outlet end.

[0012] According to some embodiments of the present invention, the first filter screen is filled with zeolite filter molecular sieve.

[0013] According to some embodiments of the present invention, the second filter screen is filled with honeycomb activated carbon molecular sieve.

[0014] The second embodiment of the utility model provides a range hood, comprising an air outlet pipe, wherein an independent purification device is movably inserted into the air outlet of the air outlet pipe, and the independent purification device adopts the above-mentioned independent purification device.

[0015] The utility model has at least the following beneficial effects:

[0016] The independent purification device is movably inserted into the air outlet of the air outlet duct. After long-term use, it can be easily disassembled and replaced to improve the purification effect and enhance the user experience.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 This is an explosion diagram of the independent purification device of the utility model in use Figure 1 ;

[0020] Figure 2 This is an explosion diagram of the independent purification device of the utility model in use Figure 2 ;

[0021] Figure 3 This is a schematic diagram of an independent purification device according to an embodiment of the utility model;

[0022] Figure 4 This is a schematic diagram of an electric control protection box according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0024] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and 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, and therefore cannot be understood as a limitation on the present invention.

[0025] In the description of the present utility model, the meaning of "a plurality" is more than two, and "greater than", "less than", "exceed" etc. are understood to exclude the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0026] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0027] Reference Figure 3 An independent purification device includes a housing 100, a purification filter screen 200, an ionized ozone generator 300, and a UV lamp 400; the housing 100 is provided with an air inlet end 101 and an air outlet end 102, and an air duct 103 is provided between the air inlet end 101 and the air outlet end 102; the purification filter screen 200 is divided into a first filter screen 210 and a second filter screen 220, the first filter screen 210 is installed at the air inlet end 101, and the second filter screen 220 is installed at the air outlet end 102; the ionized ozone generator 300 is installed in the housing 100, and the ionized ozone generator 300 is used to release ozone into the inner cavity of the housing 100; the UV lamp 400 is installed in the housing 100, and the UV lamp 400 is used to irradiate ultraviolet rays into the inner cavity of the housing 100.

[0028] The oil fume passes through the first filter screen 210 to concentrate the ozone, sulfur dioxide, ammonia and other odor molecules in the air on the surface of the molecular sieve, and oxidize and separate them to remove the odor. After the oil fume enters the air duct 103, the ionization ozone generator 300 removes harmful substances, bacteria and odor in the air. The oil fume then passes through an ultraviolet lamp with a wavelength of 254nm to further remove toxic substances and bacteria in the air, and simultaneously decomposes the excess ozone produced by the high-voltage ionization generator. Finally, the oil fume passes through the second filter screen 220 to further concentrate the excess ozone, sulfur dioxide, ammonia and other odor molecules in the air on the surface of the molecular sieve, and oxidize and separate them to discharge clean and fresh air, which has a good filtering and purification effect.

[0029] Reference Figure 3 As shown, a wind pressure sensor 500 is installed on one side of the air inlet end 101, and the wind pressure sensor 500 is controlled and connected with the ionization ozone generator 300 and the UV lamp 400. When the range hood is turned on, the wind pressure sensor 500 detects that the wind pressure increases, and the ionization ozone generator 300 and the UV lamp 400 are automatically turned on.

[0030] Specifically, the wind pressure sensor 500 , the ionization ozone generator 300 , and the UV lamp 400 are installed in an electric control protection box 600 , and the electric control protection box 600 is arranged at one side of the air duct 103 .

[0031] Specifically, the electric control protection box 600 includes a first installation chamber 610 and a second installation chamber 620 . The first installation chamber 610 is provided with a first window 611 facing the air duct 103 , and the second installation chamber 620 is provided with a second window 621 facing the air duct 103 .

[0032] Reference Figure 3 , 4 As shown, the first installation chamber 610 is loaded with an ionized ozone generator 300, and the ozone generated by the ionized ozone generator 300 enters the air duct 103 through the first window 611. Ozone is a strong oxidant that can destroy the cell walls of decomposed bacteria, thereby diffusing into the interior of the cells and oxidizing and decomposing the glucose oxidase necessary for the bacteria to oxidize glucose, etc. It can also directly react with bacteria and viruses, thereby destroying the metabolism and reproduction process of the bacteria; in addition, ozone can decompose odorous gases such as ammonia, benzene, hydrogen sulfide, etc., thereby playing a deodorizing role. The sterilization, disinfection and deodorization of ozone are short in time and strong in effect.

[0033] The second installation chamber 620 is filled with a UV lamp 400, which generates ultraviolet rays that are irradiated into the air duct 103 through the second window 621; ultraviolet rays are easily absorbed by organisms, act on the DNA of the organisms, cause the DNA to be damaged and cause the death of bacteria, and can effectively kill bacteria; therefore, ultraviolet rays can concentrate very high intensity to kill bacteria and viruses in a short time, and the ultraviolet sterilization is a purely physical disinfection method without secondary pollution.

[0034] In addition, ultraviolet rays can also accelerate the decomposition rate of ozone and enhance its oxidation capacity. After the air flow passes through the ozone generator for high-voltage ionization and deodorization, the ozone-containing gas, under the synergistic application of ultraviolet light, effectively destroys the molecular structure of organic matter and ultimately decomposes ozone due to the formation of hydroxyl free radicals.

[0035] Secondly, the normal working temperature of UV lamp 400 is 60℃, which is effective for drying air that has passed through grease and can effectively remove moisture and oil from the air.

[0036] In order to facilitate the fixed installation of the device, connecting ears 221 are symmetrically arranged on the second filter screen 220 , and the second filter screen 220 is connected to the range hood via the connecting ears 221 . The connecting ears 221 are located at the air outlet end 102 .

[0037] Specifically, the first filter screen 210 is filled with zeolite filter molecular sieve, such as ZSM-5; and the second filter screen 220 is filled with honeycomb activated carbon molecular sieve.

[0038] First of all, zeolite molecular sieve is an inorganic crystal material with regular pore structure, strong acidity and high hydrothermal stability. There are many holes of uniform size distributed in the middle of zeolite molecular sieve, which can screen various fluid molecules according to their effective pore size. When the gas with ozone and odor flows through, some ozone and odor molecules in the gas will make irregular movements and collide with its surface and be adsorbed on its surface, resulting in molecular concentration on the surface. At the same time, under the application of catalyst, they are decomposed and catalyzed, thereby achieving the purpose of eliminating ozone and removing odor. At the same time, it has the characteristics of water resistance, acid and alkali resistance, corrosion resistance, high temperature resistance, etc. It can be used in various environments, and can also be removed with water and detergents of various ingredients to remove oil, dust, dirt, etc. It can be dried naturally in a ventilated sunny place, or baked at high temperature. There are no restrictions on baking temperature, time, and equipment. Consumers can do it according to their actual situation. For example, they can use a household oven with a constant temperature of 50°C to 200°C and a timing of 10 to 120 minutes. Moreover, the zeolite filter molecular sieve after baking will have an enhanced ability to adsorb, decompose, catalyze, and regenerate odor molecules, so the ability to remove odor will also be enhanced, thereby achieving the effect of repeated and permanent use, which is very convenient and environmentally friendly.

[0039] Secondly, the honeycomb activated carbon molecular sieve can also effectively remove harmful gases, odors and pollutants in the air, such as sulfide, ammonia, formaldehyde, etc.; secondly, the second filter screen 220 can be detachably installed on the air outlet end 102, so that the air outlet end 102 can be quickly removed. The honeycomb activated carbon molecular sieve in the second filter screen 220 can be cleaned, baked, etc. to extend its service life, and can also be replaced from time to time. It is very convenient to operate, cleaner and fresher, and meets the needs of consumers.

[0040] Reference Figure 1 , 2 As shown, a range hood is an integrated range hood or an embedded range hood, including an air outlet duct 700, in which an independent purification device is movably installed at the air outlet of the air outlet duct 700, and the independent purification device adopts one of the above-mentioned independent purification devices; the independent purification device is movably installed in the air outlet of the air outlet duct 700, and after long-term use, it is convenient to disassemble and replace it to improve the purification effect and enhance the user experience.

[0041] The air inlet end 101 of the independent purification device can be designed and adapted according to the shape and size of the air outlet of the air outlet duct 700, and the air outlet end 102 of the independent purification device can also be designed and adapted according to the needs of the cabinet.

[0042] In the description of this specification, the description with reference to the terms "some embodiments" or "it is conceivable that" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0043] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A range hood, characterized in that: It comprises an air outlet pipe (700), wherein an independent purification device is movably inserted in the air outlet of the air outlet pipe (700), and the independent purification device comprises: A casing (100), wherein the casing (100) is provided with an air inlet end (101) and an air outlet end (102), and an air duct (103) is provided between the air inlet end (101) and the air outlet end (102); A purification filter screen (200), the purification filter screen (200) being divided into a first filter screen (210) and a second filter screen (220), the first filter screen (210) being filled with a zeolite filter molecular sieve, the first filter screen (210) being installed at the air inlet end (101), the second filter screen (220) being filled with a honeycomb activated carbon filter molecular sieve, and the second filter screen (220) being installed at the air outlet end (102); an ionized ozone generator (300), the ionized ozone generator (300) being installed in the housing (100), and the ionized ozone generator (300) being used to release ozone into the inner cavity of the housing (100); A UV lamp (400), the UV lamp (400) being installed in the housing (100), and the UV lamp (400) being used to irradiate ultraviolet rays into the inner cavity of the housing (100); A wind pressure sensor (500), the wind pressure sensor (500) extending toward the air duct (103), the wind pressure sensor (500) being installed on one side of the air inlet end (101), and the wind pressure sensor (500) being controllably connected to the ionization ozone generator (300) and the UV lamp (400); An electric control protection box (600), wherein the wind pressure sensor (500), the ionization ozone generator (300), and the UV lamp (400) are installed in the electric control protection box (600), and the electric control protection box (600) is arranged on one side of the air duct (103); the electric control protection box (600) comprises a first installation chamber (610) and a second installation chamber (620), wherein the first installation chamber (610) is provided with a first window (611) facing the air duct (103), and the second installation chamber (620) is provided with a second window (621) facing the air duct (103), the first installation chamber (610) is provided with the ionization ozone generator (300), and the second installation chamber (620) is provided with the UV lamp (400).

2. A range hood according to claim 1, characterized in that: The second filter screen (220) is symmetrically provided with connecting ears (221), and the connecting ears (221) are located at the air outlet end (102).

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