Air curtain device for range hood and range hood

Abstract

The present invention discloses an air curtain device for a range hood and a range hood, and relates to the technical field of range hoods. The invention is to solve the problem that the air curtain is uneven and cannot prevent the spread of oil smoke to the user. The air curtain device for the range hood comprises an air purification component, a fan and an air outlet arranged on the range hood. The air purification component and the fan are located in the air supply chamber of the range hood. An air inlet is provided on one side of the air supply chamber, and an air supply port connected to the air outlet is provided on the other side. The air outlet is strip-shaped and the air outlet direction is inclined downward. A plurality of diversion chambers are formed in the air path connected between the air supply port and the air outlet. The plurality of diversion chambers are used to divert the amount of gas transported from the air supply port to the air outlet, so that the amount of gas passing through any two diversion chambers per unit time is equal. The present invention is used for a range hood.

Description

Technical Field

[0001] The present invention relates to the technical field of range hoods, and in particular to an air curtain device for a range hood and the range hood. Background Art

[0002] With the improvement of living standards, people pay more and more attention to their health. As we all know, the fumes produced during cooking contain many substances that are harmful to the human body. If people are in an environment full of fumes for a long time, many diseases will occur. Therefore, the range hood has become an indispensable kitchen appliance in modern families. Installing it above the stove can quickly extract the waste from the stove combustion and the fumes produced during cooking and discharge them to the outside, thereby achieving the purpose of purifying the kitchen environment and protecting human health from the harm of fumes.

[0003] However, some cooking methods will continuously produce oil smoke, especially stir-frying over high heat, which will produce a large amount of oil smoke in a short period of time. Because it is difficult for the range hood to quickly remove all the oil smoke, the oil smoke can easily spread to the user and even directly hit the user's mouth and nose. It is very uncomfortable for the user to complete cooking in such an environment, and it is also very harmful to their health.

[0004] The prior art provides a wind curtain hood with plasma purification, which sucks in kitchen air, generates clean air after being processed by a plasma purification component, and then transports it to the strip slit at the air outlet through a purification fan and a connecting pipe and blows it out, so as to form a wind curtain between the user and the stove to isolate the kitchen fume. However, since the diameter of the connecting pipe is much smaller than the length of the strip slit, the clean air actually generated is mainly concentrated at the strip slit corresponding to the position of the connecting pipe. The wind curtain formed in this way is not only uneven, but also cannot cover the entire strip slit, and cannot effectively prevent the fume from spreading to the user. Summary of the invention

[0005] The embodiments of the present invention provide an air curtain device for a range hood and a range hood, which can form an air curtain with uniform air outlet to effectively prevent the oil smoke from spreading to a user.

[0006] To achieve the above-mentioned purpose, an embodiment of the present invention provides an air curtain device for a range hood, comprising an air purification component, a fan and an air outlet arranged on the range hood, the air purification component and the fan are located in an air supply chamber of the range hood, an air inlet is provided on one side of the air supply chamber, and an air supply outlet connected to the air outlet is provided on the other side, the air outlet is strip-shaped and the air outlet direction is inclined downward; a plurality of diversion chambers are formed in the air path connected between the air supply port and the air outlet, and the plurality of diversion chambers are used to divert the amount of gas transported from the air supply port to the air outlet, so that the amount of gas passing through any two of the diversion chambers per unit time is equal.

[0007] On the other hand, an embodiment of the present invention further provides a range hood, comprising the air curtain device for a range hood described in the above technical solution.

[0008] The embodiment of the present invention provides a wind curtain device for a range hood and a range hood, comprising an air purification component, a fan and an air outlet, wherein the air outlet is arranged on the outside of the range hood, and the gas enters the air supply chamber from the air inlet, is purified by the air purification component, and is transported to the air outlet through the air supply port by the fan, and forms a clean air curtain that blows downward obliquely in accordance with the shape of the air outlet and the air outlet angle, so that the user feels comfortable. Among them, a plurality of diversion chambers are formed in the air path connected between the air supply port and the air outlet, and the plurality of diversion chambers can divert and guide the gas transported from the air supply port to the air outlet, and the gas flow direction is changed so that the gas enters each diversion chamber evenly, so that the amount of gas passing through any two diversion chambers per unit time is equal, and finally the gas is evenly transported to the air outlet, thereby forming a uniform wind curtain, effectively preventing the oil smoke from spreading to the user, so as to achieve the effect of isolating the oil smoke. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0010] Figure 1 A schematic structural diagram of an air curtain device for a range hood provided by an embodiment of the present invention;

[0011] Figure 2 A schematic structural diagram of an air supply chamber in an air curtain device for a range hood provided in an embodiment of the present invention;

[0012] Figure 3 A schematic diagram of the structure of the connection between the air path and the isobaric air duct in the air curtain device for a range hood provided by an embodiment of the present invention;

[0013] Figure 4 A schematic structural diagram of an air path (including a plurality of flow-dividing chambers) in an air curtain device for a range hood provided in an embodiment of the present invention;

[0014] Figure 5 A schematic structural diagram of an isobaric air duct in an air curtain device for a range hood provided in an embodiment of the present invention;

[0015] Figure 6 A schematic diagram of a part of the structure of an air curtain device for a range hood provided in an embodiment of the present invention;

[0016] Figure 7 A schematic diagram of the structure of a range hood (excluding an isobaric air duct) provided in an embodiment of the present invention;

[0017] Figure 8 A schematic diagram of the structure of a range hood (including an isobaric air duct) provided in an embodiment of the present invention;

[0018] Fig. 9 A schematic diagram of the exploded structure of a range hood (including an isobaric air duct) provided in an embodiment of the present invention;

[0019] Fig.10 A schematic diagram of the exploded structure of the range hood (including the isobaric air duct) provided in an embodiment of the present invention from another angle. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0024] On the one hand, an embodiment of the present invention provides an air curtain device for a range hood, referring to Figure 1 , Figure 4 , comprising an air purification component 100, a fan 200 and an air outlet 300 arranged on the range hood, the air purification component 100 and the fan 200 are located in an air supply chamber 400 of the range hood, an air inlet 410 is provided on one side of the air supply chamber 400, and an air supply port 420 connected to the air outlet 300 is provided on the other side, the air outlet 300 is strip-shaped and the air outlet direction is inclined downward; a plurality of diversion chambers 510 are formed in an air path 500 connected between the air supply port 420 and the air outlet 300, and the plurality of diversion chambers 510 are used to divert the amount of gas transported from the air supply port 420 to the air outlet 300, so that the amount of gas passing through any two of the diversion chambers 510 per unit time is equal.

[0025] An embodiment of the present invention provides an air curtain device for a range hood, comprising an air purification component 100, a fan 200 and an air outlet 300. The air outlet 300 is arranged on the outside of the range hood. The gas enters the air supply chamber 400 from the air inlet 410, and after being purified by the air purification component 100, it is transported to the air outlet 300 by the fan 200 through the air supply port 420. Combined with the shape and air outlet angle of the air outlet 300, a clean air curtain that is blown out obliquely downward is formed, making the user feel comfortable. Among them, a plurality of diversion chambers 510 are formed in the air path 500 connected between the air supply port 420 and the air outlet 300. The plurality of diversion chambers 510 can divert and guide the gas delivered from the air supply port 420 to the air outlet 300, and change the gas flow direction so that the gas enters each diversion chamber 510 evenly, so that the amount of gas passing through any two diversion chambers 510 per unit time is equal, and finally the gas is evenly delivered to the air outlet 300, thereby forming a uniform wind curtain, effectively preventing the fume from spreading to the user, so as to achieve the effect of isolating the fume.

[0026] Reference Figure 4The number of the diverter cavities 510 formed in the air path 500 is determined according to the length of the air outlet 300. In one implementation, three diverter cavities 510 (first diverter cavities 510a, second diverter cavities 510b, and third diverter cavities 510c) may be formed in the air path 500 by two partitions 520 (first partition 520a, second partition 520b), and the gas coming out of the air supply port 420 enters the air path 500, and after being diverted by the first partition 520a and the second partition 520b, enters the first diverter cavities 510a, the second diverter cavities 510b, and the third diverter cavities 510c, and then is uniformly transported to the air outlet 300, forming a uniform wind curtain. In order to further achieve uniform flow diversion, the angle between the first partition 500a and the second partition 520b can be set to be greater than 45°, and the angle between the outer wall of the air path 500 away from the second partition 520b and the first partition 520a can be set to be greater than 30°. Among them, the partition 520 can be a connected component with branches, or a component that can only be guided in one direction, and the number of partitions 520 can be increased according to actual needs. Preferably, the partition 520 can be a partition. It should be noted that since the length of the air outlet 300 is generally long, in actual situations, the length of the air outlet 300 is generally equal to the length of the front side of the smoke hood 900, and the air supply outlet 420 of the air supply chamber is shorter than the length of the air outlet 300, so the entrance of the air path 500 will be shorter accordingly. There can be many ways to connect the air path 500 and the air outlet 300. In one way, the outlet length of the air path 500 is set to be equal to the length of the air outlet 300. Such a setting will greatly increase the size of the air path 500 and increase the product cost. In another way, an air duct with the same length as the air outlet 300 can be set, so that the outlet of the air path 500 is connected to the air outlet 300 through the air duct. Although such a setting increases parts, it actually reduces materials and costs, and is also easier to process and install.

[0027] In order to further ensure the uniformity of the air curtain, that is, uniform air flow, an isobaric air duct 600 is connected between the plurality of diversion cavities 510 and the air outlet 300. Figure 3 , Figure 8 As shown. Uniform air outlet requires that the air outlet speed in the length direction of the air outlet 300 remain constant. There are many ways to achieve uniform air outlet, and changing the cross-sectional area of ​​the air duct is one of them. This is because when the cross-sectional size of the air duct and the area of ​​the air duct inlet 610 remain unchanged, the static pressure in the air duct will continue to increase. An isobaric air duct 600 is set, and the outlet 620 of the isobaric air duct is set to be the same length as the air outlet 300, and the cross-sectional area of ​​the isobaric air duct 600 in the direction perpendicular to the length of the air outlet 300 is set to be along the length direction of the air outlet 300 (i.e., as shown in FIG. 1 ). Figure 3The area of ​​the entrance 610 of the isobaric air duct remains unchanged, but as the air volume in the isobaric air duct 600 decreases, the cross-sectional size of the isobaric air duct 600 is changed, so that the static pressure in the isobaric air duct 600 can be kept constant to achieve a uniform air outlet. In this way, a uniform and stable air curtain is formed at the front section of the range hood, so that the air curtain can not only produce a comfortable wind feeling when it blows on the user's face, but also play a role in isolating oil smoke.

[0028] More preferably, referring to Figure 5 , the cross-sectional area of ​​the isobaric air duct 600 is set to gradually decrease along the direction from the inlet 610 of the isobaric air duct to the outlet 620 of the isobaric air duct (i.e. Figure 3 B direction as shown) to further ensure the uniformity of the air curtain.

[0029] In addition, a first filter screen 301 is provided at the air outlet 300. Figure 6 As shown, by arranging the first filter 301 near the air outlet 300, not only can the gas purified by the air purification component 100 be filtered for the second time, but also the air outlet 300 can be prevented from being polluted by oil smoke.

[0030] Considering the later cleaning and maintenance issues, in order to reduce the impact on other components during disassembly, the isobaric air duct 600 and the air outlet 300 can be detachably connected together through a connector 700, such as Figure 6 Therefore, when cleaning or maintaining the air outlet 300, it is only necessary to remove the air outlet 300 assembly from the connecting piece 700 without affecting the isobaric air duct 600, thereby reducing deformation and damage of the isobaric air duct 600 caused by frequent disassembly; similarly, when the isobaric air duct 600 fails, it can also be disassembled and maintained without affecting the air outlet 300 assembly.

[0031] It should be noted that if Figure 6 As shown, the air outlet 300 can be formed by the angle between the upper air plate 310 and the lower air plate 320. In order to meet the personalized needs of users, the connection between the upper air plate 310 and the lower air plate 320 and the connecting member 700 can be hinged, and the width and the air outlet angle of the air outlet 300 can be adjusted by driving the driving member or manually by the user. Preferably, the width of the air outlet 300 can be 1 to 5 mm, and the angle between the air outlet angle and the horizontal direction can be 25° to 35°.

[0032] As is known to all, it is difficult to clean the oil stains on the range hood thoroughly. These oil stains and grease stains will firmly adhere to the surface of the range hood after being catalyzed by high temperature. By arranging the first filter 301 between the upper plate 310 and the lower plate 320 on the side away from the air outlet 300, that is, the first filter 301 is located on the inner side of the air outlet 300, as shown in FIG. Figure 6 As shown. After being blocked by the air outlet 300, the amount of oil smoke that the first filter 301 contacts is greatly reduced, while still being able to prevent the air outlet 300 from being polluted by oil smoke, thereby extending the cleaning cycle of the first filter 301, and further extending the service life of the first filter 301. In addition, the first filter 301 can be fixed between the upper wind plate 310 and the lower wind plate 320 in a snap-on manner, which is convenient for installation and disassembly. If the first filter 301 is covered on the air outlet 300 from the outside, the following problems will arise: first, the first filter 301 is directly exposed to the oil smoke environment for a long time, and will be stuck with a lot of oil stains in a short time, and if it is not cleaned in time, it will affect the air outlet 300; then, since the air outlet 300 is strip-shaped and has a small width, it is relatively troublesome to firmly set the first filter 301 on the outside of the air outlet 300 and facilitate later disassembly and replacement.

[0033] It is understandable that in order to purify the air that produces negative ions, a second filter 401 may be provided on the air inlet 410, such as Figure 2 As shown, before the kitchen air and / or part of the oil smoke enters the air inlet 410, it first passes through the second filter 401, which can intercept and filter larger particles of pollutants, that is, the air that generates negative ions is equivalent to being pre-treated. In this way, the load of the negative ion generator to purify the air can be reduced and the purification efficiency can be improved.

[0034] Specifically, the air purification component 100 can be a negative ion generator. The negative ions released by the negative ion generator can charge particles such as smoke, germs, spores, pollen, and hair in the air, and then be adsorbed by the discharge integrated device. Its effect is far greater than the effect produced by pure physical methods such as filtration (even with very fine filter materials, solid particles smaller than the filter holes cannot be filtered, let alone gaseous pollutants) or adsorption (such as activated carbon and other materials only have selective adsorption functions). Therefore, the negative ion generator can soften and purify the kitchen air well, effectively improve the air in front of the range hood, so that the user can breathe beneficial air during the cooking process, thereby reducing the harm of oil smoke to the user's body.

[0035] On the other hand, referring to Figure 7 , Fig.10 An embodiment of the present invention further provides a range hood, comprising the air curtain device for the range hood described in the above technical solution.

[0036] The range hood provided in the embodiment of the present invention, because it adopts the air curtain device for the range hood described in any of the above embodiments, can also achieve the effect of forming a uniform air curtain, effectively preventing the oil smoke from spreading to the user, and thus isolating the oil smoke.

[0037] The range hood provided in the embodiment of the present invention further includes a main unit 800 and a fume collecting hood 900. Fig. 9 As shown, a motor and a wind wheel are provided in the main unit 800, and an air duct is provided in the fume hood 900. The oil smoke generated during the cooking process is sucked into the air duct by the motor and the wind wheel and discharged to the outside. In addition, there are many ways to set the air curtain device for the range hood described in the above technical solution on the range hood. In one implementation, all components in the air curtain device for the range hood can be integrated in the fume hood 900, that is, the air supply chamber 400 of the range hood is located in the fume hood 900, and a strip slit corresponding to the air outlet 300 is provided on the front side of the fume hood 900 (that is, the side facing the user), so that the air outlet 620 can be discharged normally. The range hood realized in this way has a compact and beautiful appearance, with fewer components exposed outside, and correspondingly, the contact area with oil smoke is also small, which is easy to clean. However, there are also problems such as high requirements for the internal space of the smoke hood 900 and difficulty in maintenance and repair in the later stage. In another implementation, the smoke hood 900 can be used as a support, and each component in the air curtain device for the range hood is arranged on the upper side of the smoke hood 900, that is, the air supply chamber 400 of the range hood is separately arranged and located outside the smoke hood 900. The range hood realized in this way is easy to install and maintain, but there are many components exposed outside, and oil stains are easily attached during long-term contact with oil smoke, which is troublesome to clean. In addition, there is another implementation, according to the service life and maintenance cycle of each component, some components in the air curtain device for the range hood are arranged in the smoke hood 900, and the remaining components are arranged outside the smoke hood 900. The range hood realized in this way has low requirements for the space inside the smoke hood 900 and is easy to repair in the later stage, and has the above advantages. In addition, both ends of the air outlet 300 can also extend from the front side of the smoke hood 900 to the left and right sides to form a three-sided enclosed wind curtain to further block the diffusion of oil smoke, thereby facilitating the range hood to quickly draw smoke to the outdoors.

[0038] It should be noted that the range hood of the embodiment of the present application may be a Chinese-style range hood, a European-style range hood, a side-suction range hood, a multimedia smart range hood, etc., and is not limited here.

[0039] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An air curtain device for a range hood, characterized in that: The invention comprises an air purification component, a fan and an air outlet arranged on the range hood, wherein the air purification component and the fan are located in an air supply chamber of the range hood, an air inlet is provided on one side of the air supply chamber, and an air supply port connected to the air outlet is provided on the other side, the air outlet is strip-shaped and the air outlet direction is inclined downward; a plurality of diverter cavities are formed in an air path connected between the air supply port and the air outlet, and the plurality of diverter cavities are used to divert the amount of gas transported from the air supply port to the air outlet, so that the amount of gas passing through any two of the diverter cavities per unit time is equal; An isobaric air duct is also connected between the plurality of diversion cavities and the air outlet, one end of the isobaric air duct connected to the air outlet is equal in length to the air outlet, and a cross-sectional area of ​​the isobaric air duct in a direction perpendicular to the length of the air outlet gradually decreases along the length of the air outlet as it moves away from the entrance of the isobaric air duct; The cross-sectional area of ​​the isobaric air duct gradually decreases along the direction from the inlet of the isobaric air duct to the outlet of the isobaric air duct; The outlet of the isobaric air duct is detachably connected to the air outlet via a connecting piece.

2. The air curtain device for a range hood according to claim 1, characterized in that: The air outlet is formed by the angle between the upper wind plate and the lower wind plate; the upper wind plate and the lower wind plate are connected to the connecting member in a hinged manner so that the upper wind plate and the lower wind plate can rotate.

3. The air curtain device for a range hood according to claim 1 or 2, characterized in that: A second filter is arranged at the air inlet.

4. The air curtain device for a range hood according to claim 3, characterized in that: The air purification component is a negative ion generator.

5. A range hood, characterized in that: The invention comprises an air curtain device for a range hood according to any one of claims 1 to 4.

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