CN107435964B - Air curtain system for preventing oil smoke from escaping - Google Patents

Abstract

The utility model provides a prevent air curtain system of oil smoke escape, includes range hood to and be located the air curtain mechanism at kitchen top, its characterized in that: the air curtain mechanism is provided with an auxiliary air outlet arranged at the top of a doorway of the kitchen, and airflow blown out from the auxiliary air outlet faces the inner side of the kitchen and is used for guiding the range hood to flow, so that the airflow flows towards the direction of the range hood, and the exhaust of oil smoke gas is facilitated. This air curtain system for preventing oil smoke escape has the air outlet of the air curtain mechanism of locating the kitchen gate, can prevent that the oil smoke from escaping from the top at kitchen gate, but also includes the range hood that carries out absorption to the oil smoke and is located the air curtain mechanism that the range hood front side formed the air curtain, not only can prevent that the oil smoke from escaping, improves range hood's oil absorption cigarette efficiency.

Description

Air curtain system for preventing oil smoke from escaping

Technical Field

The invention relates to an air curtain system for preventing oil smoke from escaping.

Background

In recent years, people pay more and more attention to the quality of ambient air, and the quality of high-quality air needs to meet the following indexes: the air purifier has the advantages of proper temperature, proper humidity, proper oxygen content, capability of controlling the content of particulate matters in the air, capability of controlling the content of bacteria in the air and capability of eliminating peculiar smell in the air. Particularly, as the kitchen with the most serious air pollution in the family, because the kitchen can generate oil smoke in cooking, although the existing range hood can solve a part of oil smoke problem, the effect of improving the household air quality is far from enough.

Because the kitchen can produce very big oil smoke usually in the culinary art in-process, consequently the oil smoke filter equipment of range hood is difficult to adopt the mesh of too fine and close, does not more adopt the structure of filter layer such as active carbon, otherwise, the greasy dirt that filters down blocks up mesh, space easily and causes the sudden decrease of range hood air volume, makes the range hood inhale oil smoke function greatly to decline. In order to improve the efficiency of absorbing oil smoke and prevent oil smoke from escaping, some range hoods are provided with an air curtain structure to prevent oil smoke from escaping, such as a range hood disclosed in chinese patent CN202125973U, which includes a range hood body, a plurality of flow dividers and an air curtain generator, each flow divider is a hollow shell, and an air outlet is formed at the bottom end of each flow divider, each flow divider is respectively disposed on the inner side wall surface of the casing of the range hood body and is disposed downward from the air outlet, the air curtain generator is communicated with each flow divider by an air flow pipeline, and can generate air flow and guide the air flow to each flow divider by the air flow pipeline to be blown out by the air outlet, so as to form an air curtain capable of isolating oil smoke from escaping, each air curtain and the wall surface form a shielding space capable of isolating oil smoke generated during cooking, so as to effectively prevent the oil smoke from diffusing laterally, so that the oil smoke can smoothly pass through an air intake fan and be exhausted from an air outlet, thereby achieving the purpose of providing a clean kitchen and preventing the oil smoke from being absorbed by the user. However, the range hood with the air curtain is large in size, the air curtain structure cannot be flexibly arranged, and the effect of preventing oil smoke from escaping is very limited. The air curtain is arranged at the periphery of the range hood, an operator is also positioned at the position during cooking, and the air curtain is influenced by actions during operation or forward and backward walking, so that the oil smoke escapes.

Disclosure of Invention

The invention aims to provide an air curtain system which can better purify kitchen air and prevent oil smoke from escaping.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an air curtain system for preventing oil smoke escape, includes range hood to and be located the air curtain mechanism at kitchen top, its characterized in that: the air curtain mechanism is provided with an auxiliary air outlet arranged at the top of a doorway of the kitchen, and airflow blown out from the auxiliary air outlet faces the inner side of the kitchen and is used for guiding the range hood to flow, so that the airflow flows towards the direction of the range hood, and the exhaust of oil smoke gas is facilitated.

Preferably, the air flow speed blown out by the auxiliary air outlet is 2 m/s-20 m/s.

Preferably, the air flow blown out from the auxiliary air outlet forms an angle A with the vertical direction, and A is 60-90 degrees.

Preferably, the air curtain mechanism further comprises an air outlet for discharging air towards the lower edge of the range hood, the speed of the air flow blown out from the air outlet is gradually reduced along with the lower edge approaching the range hood, and the speed of the air flow blown out from the air outlet is reduced to 0 within the distance of 750mm respectively in the up-down direction of the horizontal plane where the lower edge of the range hood is located.

Preferably, the air blown out from the edge of the air outlet of the air curtain mechanism, which is close to one side of the range hood, forms an angle alpha with the vertical direction, and the air blown out from the edge of the air outlet, which is far from the range hood, forms an angle beta with the vertical direction, wherein the angle alpha is-75 degrees, and the angle beta is-75 degrees.

Preferably, the air blown out from the edges at the two ends of the air outlet forms an angle gamma with the vertical direction, wherein the angle gamma is-80 to 80 degrees.

As an alternative embodiment of the air outlet, the air outlet is a strip-shaped outlet which is positioned near the top of the range hood and extends transversely; or the air outlet is an annular outlet positioned at the top part near the range hood; or the air outlet is an arc-shaped outlet positioned at the top part near the range hood, and the circle center of the arc is positioned at one side of the range hood; or the air outlet can also be in a wave shape positioned at the top part near the range hood, or the air outlet is a plurality of air outlets arranged at intervals.

In order to better purify indoor air and prevent oil smoke from escaping, the indoor air purifier further comprises an air purifying device, wherein the air purifying device comprises at least one air inlet communicated with the indoor space, and the air purifying device further comprises at least one air outlet communicated with the indoor space.

In order to better purify the oil smoke, the air purification device also comprises at least one air inlet communicated with the range hood.

Preferably, the air outlet of the range hood is communicated to a first end of a three-way valve, a second end of the three-way valve is connected to an external flue, and a third end of the three-way valve is connected to a communication pipeline and is connected to an air purification device through the communication pipeline.

In order to better purify oil smoke and prevent the oil smoke from escaping, the air purification device comprises a shell and an air purification unit positioned in the shell, wherein the shell is provided with an air inlet and an air outlet, the air inlet is communicated to an air inlet of the air purification unit, an air outlet of the air purification unit is vertical to the air inlet of the air purification unit, and the inner side of the shell is provided with a fan.

Preferably, other functional modules are arranged on an air duct between the air outlet of the air purification unit and the shell fan.

Preferably, the other functional modules comprise at least one of a sterilization module, a refrigeration and heating module, a smell elimination module and a humidification module.

Preferably, the air purification unit comprises a coarse filtration unit and/or a fine filtration unit.

As an optional implementation manner of the air purification device, openings are respectively formed in the upper surface and/or the lower surface of the housing to form the air inlets, the air inlets of the air purification unit are exposed out of the air inlets, two air outlets of the air purification unit respectively face two opposite peripheral surfaces of the housing, air outlets are arranged on the peripheral surface of the housing, and the sterilization module, the refrigeration and heating module, the odor removal module and the humidification module are sequentially arranged along the transverse direction of the housing from the air outlets to the air outlets of the air purification unit.

As another optional implementation manner of the air purification device, air inlets are arranged on the peripheral surface and the upper surface of the casing, an air outlet is arranged on the lower surface of the casing, the coarse filtration unit is arranged in a circle on the inner side of the peripheral surface of the casing, the fine filtration unit is arranged below the air inlet on the upper surface, other functional modules and a fan are arranged in the middle position below the fine filtration unit, the side surfaces of the other functional modules are separated from the coarse filtration unit, and the air discharged by the coarse filtration unit upwards enters the fine filtration unit and then enters the other functional modules after passing through the fine filtration unit.

Preferably, as another optional embodiment of the air purification apparatus, the air inlets are located on the upper surface and the lower surface of the housing, the air outlets are located on the circumferential surface of the housing, a blower is disposed in the middle of the housing, the air outlet of the blower is connected to the air outlets on the circumferential surface of the housing, the air inlet of the blower is respectively disposed upward and downward and communicated to the air inlets on the upper surface and the lower surface of the housing, and an air purification unit is further disposed between the blower and the air inlets.

Compared with the prior art, the air curtain system for preventing the oil smoke from escaping has the advantages that the air curtain system is provided with the air outlet of the air curtain mechanism arranged at the kitchen doorway, the oil smoke can be prevented from escaping from the top of the kitchen doorway, the air curtain system also comprises a range hood for adsorbing the oil smoke and the air curtain mechanism which is positioned at the front side of the range hood and forms the air curtain, the oil smoke can be prevented from escaping, and the oil smoke absorption efficiency of the range hood is improved.

Drawings

Fig. 1 is a schematic view of an air curtain system for preventing oil smoke from escaping according to an embodiment of the present invention.

Fig. 2 is a side view of an air curtain system for preventing oil smoke from escaping according to an embodiment of the present invention.

Fig. 3 is a top view of an air outlet of an air curtain mechanism of an air curtain system for preventing oil smoke from escaping according to a first embodiment of the present invention.

Fig. 4 is a top view of an air outlet of an air curtain mechanism of an air curtain system for preventing oil smoke from escaping according to a second embodiment of the present invention.

Fig. 5 is a top view of an air outlet of an air curtain mechanism of an air curtain system for preventing lampblack from escaping according to a third embodiment of the present invention.

Fig. 6 is a top view of an air outlet of an air curtain mechanism of an air curtain system for preventing lampblack from escaping according to a fourth embodiment of the present invention.

Fig. 7 is a top view of an air outlet of an air curtain mechanism of an air curtain system for preventing lampblack from escaping according to a fifth embodiment of the invention.

Fig. 8 is a schematic view of an air cleaning device of a kitchen air cleaning system according to an embodiment of the present invention.

Fig. 9 is a schematic view of an air cleaning device of a kitchen air cleaning system according to another aspect of the present invention.

Fig. 10 is a sectional view taken along line E-E of fig. 8.

Fig. 11 is a plan sectional view taken along line E-E in fig. 8.

Fig. 12 is an exploded view of an air cleaning device according to an embodiment of the present invention.

Fig. 13 is a sectional view taken along line F-F in fig. 8.

Fig. 14 is a schematic view of an air purification unit in the air purification apparatus of the embodiment of the present invention.

Fig. 15 is a partially enlarged view of fig. 14.

FIG. 16 is a schematic view of a cyclone tube in an air cleaning apparatus according to an embodiment of the present invention.

FIG. 17 is a cross-sectional view of the cyclone tube of FIG. 16.

Fig. 18 is a cross-sectional view of the cyclone tube of fig. 16 in another direction.

Fig. 19 is a schematic view of another embodiment of an air cleaning device according to an embodiment of the present invention.

Fig. 20 is a plan view of another embodiment of the air cleaning device according to the embodiment of the present invention.

Fig. 21 is a schematic view of an air cleaning apparatus according to still another embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the following examples of the drawings.

As shown in fig. 1-3, the air curtain system for preventing oil smoke from escaping according to the embodiment of the present invention includes a range hood 10, and an air curtain mechanism 70 located at the top of the front side of the range hood 10, that is, at a position adjacent to a ceiling of the top of the range hood 10 near a user.

The air curtain mechanism 70 is provided with an air outlet 71 for blowing air towards the lower edge of the range hood 10, and the air curtain mechanism 70 further comprises an auxiliary air outlet 72 for blowing air downwards towards the kitchen, which is arranged at the top of the doorway position of the kitchen. The air flow blown out from the auxiliary air outlet 72 is blown to the air suction position of the range hood 10 to guide the flow of the range hood 10, so that the air flow flows in the direction of the range hood 10, which is beneficial to the discharge of the oil smoke gas.

The air curtain mechanism 70 may be a whole, and the air outlet 71 and the auxiliary air outlet 72 are disposed at the front side of the range hood 10 and the doorway of the kitchen, or may be two independently disposed components, that is, a main mechanism and the air outlet 71 are disposed at the front side of the range hood 10 of the kitchen for air outlet, and another auxiliary mechanism and the auxiliary air outlet 72 are disposed at the doorway of the kitchen for auxiliary air outlet.

The air flow blown out from the auxiliary air outlet 72 forms an included angle A with the vertical direction, and the included angle A is 60-90 degrees. The speed of the air flow blown out from the auxiliary air outlet 72 is in the range of 2m/s to 20m/s, preferably 5m/s to 15m/s.

The auxiliary outlet 72 may be in the shape of a strip extending along the doorway of the kitchen, or may be in the shape of a single strip formed by a plurality of individual outlets, or may be in the shape of an arc or a wave.

Because the oil smoke in the kitchen is filtered by the range hood, even if escaping oil smoke is generated, the escaping oil smoke can spread along the roof of the kitchen and spread to other rooms from the top of the doorway of the kitchen along the roof, therefore, the air curtain blowing towards the interior of the kitchen is arranged at the top of the doorway of the kitchen, so that the escaping oil smoke can be controlled within the range of the kitchen and possibly sucked and purified by the range hood for the second time.

The air curtain mechanism 70 is further provided with an air outlet 71 positioned on the front side of the range hood 10, air blown out from the air outlet 71 has a certain angle range, the air blown out from the edge of the air outlet 71 close to one side of the range hood forms an angle alpha with the vertical direction, the air blown out from the edge of the air outlet 71 far away from the range hood forms an angle beta with the vertical direction, the angle alpha is-75 degrees, wherein the angle alpha is a positive angle towards one side of the range hood, the angle beta is a negative angle towards one side of the range hood, and the angle beta is-75 degrees. The wind blown out by the wind curtain mechanism 70 has a certain wind speed, which gradually decreases with the approach of the lower edge of the range hood 10, and the wind speed becomes 0 within a range of 750mm in the up-down direction of the horizontal plane of the lower edge of the range hood 10, preferably within a range of 300mm in the up-down direction of the horizontal plane of the lower edge of the range hood 10. The distance between the air outlet 71 of the air curtain mechanism 70 and the lower edge of the range hood is about d, wherein d is 300-1500 mm. And the wind blown out from the two end edges of the air outlet 71 forms an angle gamma with the vertical direction, wherein the angle gamma is-80 to 80 degrees.

Therefore, the range hood can play a role in preventing oil smoke from escaping, and the normal suction of the range hood is not influenced by the air generated by the air curtain, the flame generated by the cooker is not influenced, and further the cooking is not influenced.

The air curtain mechanism 70 further includes a fan within its housing for generating an air flow of the air curtain.

The air outlet 71 of the air curtain mechanism 70 may be in a shape surrounding three sides of the range hood, as shown in fig. 3, or the air outlet 71 may be a strip-shaped outlet extending transversely and located at the top near the range hood 10, as shown in fig. 4; the air outlet 71 is an annular outlet located at the top of the range hood 10, as shown in fig. 5, so that when cooking, an operator is surrounded in the air curtain, and even if the operator disturbs the effect of controlling the oil smoke by the air curtain, the effect of preventing the oil smoke from escaping is better because of the air curtains in the front and the back of the range hood 10. As shown in fig. 6, the air outlet 71 is an arc-shaped outlet located at the front side of the range hood 10, and the center of the arc-shaped outlet is located at one side of the range hood. As shown in fig. 7, the air outlet 71 may also be in a wave shape located at the front side of the range hood 10.

The front side of the air outlet 71 of the air curtain mechanism 70, i.e. the side of the air outlet 71 opposite to the range hood, is further provided with an air purifying device 50, i.e. the air purifying device 50 is arranged between the air outlet 71 and the auxiliary air outlet 72. In the air curtain system for preventing oil smoke from escaping, the openings of the air outlet 71 and the auxiliary air outlet 72 are provided with baffles which can be opened and closed. For generating an air curtain when required.

The air curtain mechanism 70 may be integrally formed with the air purification apparatus 50, i.e., located in the same housing, or may be formed separately from the air purification apparatus 50 and located in different housings.

For example, the distance between the air curtain mechanism 70 and the lower edge of the range hood 10 is 700mm, the air blown out from the air outlet 71 of the air curtain mechanism is 2.2m/s, the air speed blown out from the air outlet 71 is gradually reduced, and the air speed is reduced to 0 when the distance from the air outlet 71 is 1000 mm. Namely, the wind speed is reduced to 0 when the position of 300mm below the lower edge of the range hood 10 is reached.

Or, the distance between the air curtain mechanism 70 and the lower edge of the range hood 10 is 700mm, the air blown out from the air outlet 71 of the air curtain mechanism is 1.5m/s, the air speed blown out from the air outlet 71 is gradually reduced, and when the distance reaches a distance of 71400mm from the air outlet, the air speed is reduced to 0. Namely, the wind speed is reduced to 0 when the position of 300mm above the lower edge of the range hood 10 is reached.

Or, the distance between the air curtain mechanism 70 and the lower edge of the range hood 10 may be 700mm, the air blown out from the air outlet 71 of the air curtain mechanism is 1.8m/s, and the air speed blown out from the air outlet 71 gradually decreases, and when the distance is 700mm from the air outlet 71700mm, the air speed decreases to 0, that is, when the distance is to the lower edge of the range hood 10, the air speed decreases to 0.

The air outlet 71 near the top of the range hood can be a plurality of air outlets which separately surround the range hood at intervals, or a single air outlet surrounds the range hood, or surrounds part of the range hood or is only positioned on one side of the range hood facing a user, and the size of the air outlet 71 can be adjusted, and the size of the air speed can be adjusted by adjusting the size. Moreover, the air outlet 71 may also be provided with a panel capable of opening and closing for controlling the opening or closing of the air outlet, or may be provided with an air deflector capable of swinging left and right or back and forth for adjusting the direction of the outlet air, such as an air outlet of an air conditioner.

The air purification device 50 comprises at least one upward air inlet 11, is used for being connected with the range hood 10, and comprises at least one air inlet 11 communicated with the indoor space and at least one air outlet 12 communicated with the indoor space. The air cleaning apparatus 50 includes a housing 1, and an air cleaning unit 2 provided in the housing 1. The housing 1 is flat and square as shown in fig. 8 and 9, and the housing 1 is provided with an air inlet 11 and an air outlet 12. An air outlet of the range hood 10 is communicated to a first end of a three-way valve, a second end of the three-way valve is connected to an external flue, and a third end of the three-way valve is connected to a communication pipeline and is connected to an air purification device 50 through the communication pipeline. The communicating pipeline can be internally provided with an additional oil smoke removing device, such as a filter screen oil smoke removing device or an electrostatic oil smoke removing device, so that oil smoke can be better purified.

As shown in fig. 8 and 9, the air inlet 11 of the housing 1 is located on the upper surface and the lower surface of the housing 1, and the air outlet 12 is located on the circumferential surface of the housing 1. The air inlet of the air purification unit 2 faces the air inlet 11, and the air outlet of the air purification unit 2 may or may not face the air outlet 12 of the housing 1.

As shown in fig. 8 and 9, the housing 1 has two air inlets 11 on the upper surface and the lower surface, and two air outlets 12 are respectively disposed on two opposite peripheral surfaces of the housing 1. And the air outlet of the air cleaning unit 2 is arranged towards the air outlet 12 and the air inlet of the air cleaning unit 2 is arranged towards the air inlet 11. Therefore, two air purification units 2 are provided in the air purification apparatus. In particular, the upper surface and the lower surface of the housing 1 are respectively provided with openings to form the air inlet 11, the air inlet 11 exposes the air inlet of the air purification unit 2, and the air inlet of the air purification unit 2 is located at the position of the air inlet 11. The inner side of the air outlet 12 of the casing 1 is provided with a fan 5, so that the air flow in the casing 1 is guided to the air outlet 12 and discharged, and the air flow is guided to the air outlet 12 and discharged. Namely, the air purification unit 2 and the fan 5 are sequentially arranged in an air flow channel between the air inlet 11 and the air outlet 12 of the casing 1, and other functional units can be arranged between the air purification unit 2 and the fan 5. The fan 5 is a vortex fan. When the air curtain mechanism 70 is integrally formed with the air purification device 50, the fan 5 may be used to generate the air curtain, or may be used only for the air purification device 50, and the air flow of the air curtain mechanism 70 is generated by other fans.

As shown in fig. 8, 9 and 10, the air inlets of the two air cleaning units 2 are respectively disposed downward and upward, and the air outlets thereof are two and respectively disposed toward the air outlets on two opposite peripheral walls of the housing 1. The external oil smoke gas enters the air purification unit 2 from the air inlet 11 of the housing 1, that is, the air inlet of the air purification unit 2, and is discharged from the air outlet of the air purification unit 2 after oil smoke separation is performed by the air purification unit 2, and the air outlet of the air purification unit 2 is perpendicular to the air inlet thereof, and then is discharged to the outside of the housing 1 from the air outlet 12 of the housing 1. A sterilization module 3 and a refrigeration and heating module 4 can be sequentially arranged on an air channel from an air outlet of the air purification unit 2 to the fan 5 of the air outlet 12 of the shell 1. Other functional modules such as a smell removal module and a dehumidification module can be arranged. Therefore, the soot gas passing through the air purifier can be purified and filtered into a clean gas, and further directly discharged from the outlet 12 of the casing 1. The air purification device can be installed on a suspended ceiling of a kitchen, is similar to the position and the structure of an air conditioner or a bathroom ventilator, is small in size and attractive in appearance, can discharge gas indoors instead of outdoors, and is more environment-friendly and free of environmental pollution.

As shown in fig. 19 and 20, which are schematic diagrams of a second embodiment of an air purification apparatus 50 according to the present invention, a housing 1 of the air purification apparatus in this embodiment is a flat circular shape, an air inlet 11 is disposed on a peripheral surface of the housing 1, an air outlet 12 is disposed on a lower surface of the housing 1, and an air inlet 11 is also disposed on an upper surface of the housing 1, for connecting a range hood 10 in a kitchen.

An oil smoke filtering unit 2, other functional modules and a fan 5 are sequentially arranged in an air flow channel from the air inlet 11 to the air outlet 12, the oil smoke filtering unit 2 may be the structure of the oil smoke filtering unit 2 as described in the above embodiments, or may include a coarse filtering unit 100 and a fine filtering unit 200, the coarse filtering unit 100 may be the structure of the air purifying unit 2, or may be other oil smoke purifying structures, and is used for filtering oil smoke with larger particles; the fine filtering unit 200 may be a filter screen structure as shown in fig. 11, or may be another oil smoke filtering unit for filtering oil smoke with small particles.

The coarse filter unit 100 is arranged in a circle around the circumference of the casing 1, that is, a circle of cyclone tubes 21 is arranged in a circle around the casing 1, air inlets 212 of the cyclone tubes 21 face the outer side of the circumference of the casing 1, the fine filter unit 200 is positioned above the middle of the casing 1, another air inlet 11 is arranged above the fine filter unit 200, other functional modules and a fan 5 are arranged in the middle of the lower part of the fine filter unit 200, that is, the middle of the coarse filter unit 100, and the sterilization module 3 and the refrigeration and heating module 4 are other functional modules. The side surfaces of the other functional modules are spaced from the coarse filter unit 100, that is, the airflow enters the housing 1 from the air inlet 11 on the peripheral surface of the housing 1, passes through the coarse filter unit 100, goes upward, enters the fine filter unit 200 and the other functional modules from above, then passes through the fine filter unit 200 and the other functional modules in sequence, and is discharged from the air outlet 12 in the middle of the lower part.

As shown in fig. 21, which is a schematic view of a third embodiment of the air purification apparatus 50 of the present invention, the housing 1 in this embodiment is cylindrical, and the air inlet 11 is located on the upper surface and the lower surface of the housing 1, and the air outlet 12 is located on the peripheral surface of the housing 1. The middle position of the shell 1 is provided with a fan 5, the air outlet of the fan 5 is connected to the air outlets 12 on the peripheral surface of the periphery of the shell 1, the air inlet of the fan 5 is respectively arranged upwards and downwards to be communicated to the air inlets 11 on the upper surface and the lower surface of the shell 1, and a coarse filtering unit 100, a fine filtering unit 200 and other functional modules are arranged between the fan 5 and the air inlets 11.

Namely, the air purification unit 2, other functional modules and the fan 5 are sequentially arranged on the air flow channel between the air inlet 11 and the air outlet 12, the air purification unit 2 includes a coarse filtration unit 100 and a fine filtration unit 200, or only the coarse filtration unit 100 or the fine filtration unit 200 may be provided, and the other functional modules may include at least one of the sterilization module 3, the refrigeration and heating module 4, the odor removal module and the humidification module. Other functional modules may not be provided.

As shown in fig. 13 to 18, the air purification units 2 are of two sets, each set of air purification unit 2 includes at least two side-by-side cyclone tubes 21 extending in the same direction, the cyclone tubes 21 are of a hollow cylindrical structure, and both ends of the cyclone tubes 21 are provided with openings to form air outlets 213, and the middle part of the side wall 211 of the cyclone tube 21 is provided with an opening extending along the axial direction of the cyclone tube 21 to form an air inlet 212. The periphery of the air inlet 212 is formed with a circle of wind scoops 214 extending outward, and the wind scoops 214 include two opposite first guide surfaces 2141 and second guide surfaces 2142 extending in the axial direction of the cyclone tube 1, wherein the first guide surfaces 2141 extend perpendicularly to the side wall 211 of the cyclone tube 21 from the outer side of the air inlet 212, and the second guide surfaces extend away from the first guide surfaces 2141 from the outer side of the air inlet 212. Therefore, under the action of the fan, the oil smoke entering the cyclone tube 21 from the air inlet 212 can rotate and accelerate in the cyclone tube 21, and further the oil smoke gas collides with the sidewall of the cyclone tube 21, because there is friction between the oil droplets and the sidewall of the cyclone tube 21, the oil droplet molecules will remain in the sidewall of the cyclone tube 21, and the gas separated from the oil droplet molecules gradually moves towards both ends and is discharged from the air outlet 213.

In order to further separate oil droplets from gas, a wire 22 is provided inside the cyclone tube 21 extending along the axial direction thereof, preferably, the wire 22 extends along the center of the cyclone tube 21, and the air cleaning unit further includes a high voltage electrostatic generator (not shown), one of the positive and negative poles of which is connected to the sidewall 211 of the cyclone tube 21, and the other of the positive and negative poles of which is connected to the wire 22. When the high voltage electrostatic generator is operated, a cylindrical electric field is formed inside the cyclone tube 21, free electrons in the air move to two poles under the action of the cylindrical electric field, and after the voltage of the electric field rises to a certain value, most oil smoke molecules are combined with negative electrons to form negative ions when the air containing the oil smoke molecules spirally passes through the cyclone tube 21, and the negative ions are deposited on one pole of the side wall 211 of the cyclone tube 21 under the action of the electric field. The separation rate of oil smoke gas is improved more, and the gas passing through the air purification unit is cleaned better.

Therefore, the structure of the cyclone tube can enable the gas to rotate, has the capability of filtering large particles, effectively increases the probability of capturing and decomposing substances, and makes up the function that static plasma cannot complete; and the charged wire is added in the middle of the cyclone tube, so that the defect that the structure of the cyclone tube is insufficient in capturing small particles is overcome, oil drop molecules can be removed, other space and volume are not occupied, a structure is not required to be additionally arranged, and the electric field can be realized by utilizing the structure of the cyclone tube. Compared with the existing filter screen filtering structure, the cyclone tube has large inner diameter, is not easy to block, greatly prolongs the cleaning period, does not need to be replaced for permanent use, and greatly reduces the use cost.

As shown in fig. 13 and 14, the air cleaning apparatus includes two sets of air cleaning units arranged up and down, and each set of air cleaning unit includes a plurality of cyclone tubes 21 arranged side by side, the extending directions of the cyclone tubes 21 in the two sets of air cleaning units are the same, the air inlets 212 of each cyclone tube 21 in each set of air cleaning unit are the same, the air inlets of the cyclone tubes 21 in the two sets of air cleaning units are opposite, that is, the air inlets 212 of the cyclone tubes 21 in the lower set of air cleaning unit are arranged downward, the air inlets 212 of the cyclone tubes 21 in the upper set of air cleaning unit are arranged upward, and the air inlets 212 of the cyclone tubes 21 in each set of air cleaning units 2 are respectively opposite to the air inlet 11 on the upper surface of the housing 1 and the air inlet 11 on the lower surface of the housing 1. The air outlets 213 of at least two cyclone tubes 21 in the air purification unit 2 are air outlets of the air purification unit 2, in this embodiment, the two air purification units 2 include air outlets on two sides.

The air cleaning unit further comprises a fixing frame 23 for fixing at least two cyclone tubes, a support 231 with a flat plate shape of the fixing frame 23, and an opening 232 which is positioned on the support 231 and is matched with the shape of the wind scooper 214 of the cyclone tube 21, wherein the periphery of the opening 232 is provided with a fixing edge 233 which extends towards the wind scooper 214 and is respectively positioned on the inner side of the wind scooper 214. The fixing frame 23 can guide and position the cyclone tube 21 to form a whole. The fixing frames 23 of the two air purification units may be integrally formed or may be separately formed and fixed to each other. The cyclone pipes in each air purification unit group can be integrally formed with the wind scooper, so that the structure is simple, the processing is convenient, the integrity of the oil fume filtering part is improved, and the oil fume is prevented from escaping. The holder 23 further includes a side plate 235 perpendicular to the plate-shaped holder 231, the side plate 235 being used to hold the end of the cyclone tube 21, and the wires 22 are connected to the high voltage electrostatic generator through the side plate 235. In the two sets of air purification units shown in fig. 6 and 7, the cyclone tubes 21 of each set of air purification units share the side plates 235 at two sides, i.e., the side plates 235 in each set of air purification units are connected or integrally formed. The outlet 12 of the housing 1 may be provided with a guide vane for adjusting the direction of the wind, so that the direction of the blown gas can be adjusted.

This air curtain system for preventing oil smoke escape has the air outlet of the air curtain mechanism of locating the kitchen gate, can prevent that the oil smoke from escaping from the top at kitchen gate, but also includes the range hood that carries out absorption to the oil smoke and is located the air curtain mechanism that the range hood front side formed the air curtain, not only can prevent that the oil smoke from escaping, improves range hood's oil absorption cigarette efficiency.

Although preferred embodiments of the present invention have been described in detail hereinabove, it should be clearly understood that modifications and variations of the present invention are possible to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides an air curtain system for preventing oil smoke escape, includes range hood (10) to and be located air curtain mechanism (70) at kitchen top, its characterized in that: the air curtain mechanism (70) is provided with an auxiliary air outlet (72) arranged at the top of a doorway of the kitchen, airflow blown out of the auxiliary air outlet (72) is directed towards the inner side of the kitchen to guide the range hood (10) to flow towards the direction of the range hood, so that the exhaust of oil smoke gas is facilitated, and the airflow speed blown out of the auxiliary air outlet (72) is 5-15 m/s;

the air purification device (50) comprises at least one air inlet (11) communicated with the indoor space, and the air purification device (50) further comprises at least one air outlet (12) communicated with the indoor space;

the air purification device (50) comprises a shell (1) and an air purification unit (2) positioned in the shell (1), wherein the shell (1) is provided with an air inlet (11) and an air outlet (12), the air inlet (11) is communicated with an air inlet of the air purification unit (2), the air outlet of the air purification unit (2) is vertical to the air inlet of the air purification unit (2), and a fan (5) is arranged on the inner side of the shell (1);

the air purification unit (2) comprises a coarse filtration unit (100) and/or a fine filtration unit (200);

other functional modules are arranged on an air channel between an air outlet of the air purification unit (2) and the fan (5) of the shell (1);

the upper surface and/or the lower surface of the shell (1) are/is provided with openings to form the air inlet (11), the air inlet of the air purification unit (2) is exposed out of the air inlet (11), the number of the air outlets of the air purification unit (2) is two, the two air outlets face to two opposite peripheral surfaces of the shell (1), and the peripheral surface of the shell (1) is provided with an air outlet (12); or alternatively

The gas filter is characterized in that gas inlets (11) are formed in the peripheral surface and the upper surface of the shell (1), a gas outlet (12) is formed in the lower surface of the shell (1), the coarse filter unit (100) is arranged on the inner side of the peripheral surface of the shell (1) in a circle, the fine filter unit (200) is arranged below the gas inlet (11) in the upper surface, other functional modules and a fan (5) are arranged in the middle position below the fine filter unit (200), the side surfaces of the other functional modules are separated from the coarse filter unit (100), gas discharged by the coarse filter unit (100) upwards enters the fine filter unit (200), passes through the fine filter unit (200) and then enters the other functional modules; or

Air inlet (11) are located the upper surface and the lower surface of casing (1), and gas outlet (12) are located casing (1) all around global, and the intermediate position of casing (1) is equipped with fan (5), and the air outlet of fan (5) is connected to gas outlet (12) on casing (1) all around global, and the income wind gap of fan (5) upwards and sets up respectively downwards and communicates to air inlet (11) on casing (1) upper and lower surface to be equipped with air purification unit (2) between fan (5) and air inlet (11).

2. The air curtain system for preventing oil smoke from escaping as claimed in claim 1, wherein: the air flow blown out from the auxiliary air outlet (72) forms an angle A with the vertical direction, and the angle A is 60-90 degrees.

3. The air curtain system for preventing oil smoke from escaping as claimed in any one of claims 1-2, wherein: the air curtain mechanism (70) further comprises an air outlet (71) for exhausting air towards the lower edge of the range hood (10), the speed of air flow blown out of the air outlet (71) is gradually reduced along with the speed of the air flow close to the lower edge of the range hood (10), and the speed of the air flow blown out of the air outlet (71) is reduced to 0 within the range of 750mm in the vertical direction of the horizontal plane where the lower edge of the range hood (10) is located.

4. The air curtain system for preventing the escape of oil smoke according to claim 3, wherein: the air blown out from the edge of the air outlet (71) of the air curtain mechanism (70) close to one side of the range hood forms an alpha angle with the vertical direction, and the air blown out from the edge of the air outlet (71) far away from the range hood forms a beta angle with the vertical direction, wherein the alpha is-75 degrees, and the beta is-75 degrees.

5. The air curtain system for preventing the escape of oil smoke according to claim 4, wherein: the air blown out from the edges of the two ends of the air outlet (71) forms an angle gamma with the vertical direction, wherein the angle gamma is-80 to 80 degrees.

6. The air curtain system for preventing the escape of oil smoke according to claim 3, wherein: the air outlet (71) is a strip-shaped outlet which is positioned near the top of the range hood (10) and extends transversely; or the air outlet (71) is an annular outlet positioned at the top part near the range hood (10); or the air outlet (71) is an arc-shaped outlet positioned at the top part near the range hood (10), and the center of the arc is positioned at one side of the range hood; or the air outlet (71) can also be in a wave shape positioned at the top part near the range hood (10); or the air outlet (71) is a plurality of air outlets arranged at intervals.

7. The air curtain system for preventing the escape of oil smoke according to claim 3, wherein: the air purification device (50) further comprises at least one air inlet (11) communicated with the range hood (10).

8. The air curtain system for preventing the escape of oil smoke according to claim 3, wherein: the air outlet of the range hood (10) is communicated to the first end of the three-way valve, the second end of the three-way valve is connected to an external flue, and the third end of the three-way valve is connected to the communicating pipeline and is connected to the air purifying device (50) through the communicating pipeline.

9. The air curtain system for preventing the escape of oil smoke according to claim 1, wherein: the other functional modules comprise at least one of a sterilization module (3), a refrigeration and heating module (4), a smell removal module and a humidification module.

10. The air curtain system for preventing the escape of oil smoke of claim 9, wherein: the sterilizing module (3), the refrigerating and heating module (4), the odor removing module and the humidifying module are arranged from the air outlet to the air outlet of the air purifying unit and are arranged on the shell (1) in sequence.

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