CN115183294B

CN115183294B - Range hood

Info

Publication number: CN115183294B
Application number: CN202110359654.3A
Authority: CN
Inventors: 刘智; 曲绍鹤; 李忠华
Original assignee: Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Current assignee: Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Priority date: 2021-04-01
Filing date: 2021-04-01
Publication date: 2025-04-01
Anticipated expiration: 2041-04-01
Also published as: CN115183294A

Abstract

The present invention discloses a range hood, which comprises a casing, a purification component and an air curtain, wherein the casing is provided with a smoke exhaust duct and a smoke inlet connected to the smoke exhaust duct; the purification component is arranged in the casing, the purification component forms a purification duct, the purification duct and the smoke exhaust duct are independent of each other, and the casing is provided with a purification air inlet and a purification air outlet connected to the purification duct; the air curtain component is installed in the casing and connected to the purification duct, and the casing is provided with an air curtain outlet corresponding to the air curtain component, and part of the air in the purification duct is blown out from the air curtain outlet after passing through the air curtain component. The technical solution of the present invention reduces the pollution of oil smoke to the kitchen environment and the damage to human health.

Description

Fume exhaust fan

Technical Field

The invention relates to the technical field of kitchen appliances, in particular to a range hood.

Background

During the cooking process, oil smoke is generated, and the oil smoke not only pollutes the air environment, but also damages the health of human bodies. The traditional range hood can discharge the oil smoke to the outside rapidly, so that the pollution to the air environment in the kitchen and the damage to the health of human bodies are reduced. However, during cooking, there is always oil smoke escaping from the conventional range hood and escaping into the kitchen space. The escaped oil smoke can still cause oil smoke pollution and damage to the health of human bodies.

Disclosure of Invention

The invention aims to provide a range hood, which aims to further reduce the pollution of lampblack to the kitchen environment and the damage to the human health.

In order to achieve the above object, the present invention provides a range hood comprising:

The shell is provided with a smoke exhaust air duct and a smoke exhaust port communicated with the smoke exhaust air duct;

The purification assembly is arranged in the shell, a purification air channel is formed in the purification assembly, the purification air channel and the smoke exhaust air channel are mutually independent, and the shell is provided with a purification air inlet and a purification air outlet which are communicated with the purification air channel; and

The air curtain piece is arranged on the machine shell and communicated with the purification air duct, an air curtain air outlet corresponding to the air curtain piece is formed in the machine shell, and part of air in the purification air duct is blown out from the air curtain air outlet after passing through the air curtain piece.

According to the technical scheme, the purifying component is arranged in the shell of the range hood, the purifying component is provided with the purifying air channel which is mutually independent of the smoke exhaust air channel, the shell is provided with the purifying air inlet and the purifying air outlet which are communicated with the purifying air channel, the fume escaping to the kitchen environment can be further exhausted in the process of exhausting the smoke exhaust air channel through the effect of the purifying component, the kitchen environment can be improved, the quantity of the fume absorbed by a human body is reduced, the health of the human body is improved, the shell is further provided with the air curtain piece, the air curtain piece is communicated with the purifying air channel, the shell is provided with the air curtain air outlet which is correspondingly connected with the air curtain piece, and therefore, the air curtain can serve as a barrier effect on one hand, the escaping phenomenon of the fume in the process of leading to the smoke exhaust air channel can be reduced, and the fume can be further blocked from flowing to a cooker positioned in front of the range hood due to the fact that the air curtain is formed in front of the range hood, and the health of the human body can be further improved.

Optionally, the purifying air outlet is located on the front face of the casing, and the air curtain member is disposed adjacent to the purifying air outlet.

In this embodiment, the clean air outlet sets up in the casing openly, can be with the at least partial direct culinary art person that is located range hood the place ahead of blowing of air after the purification to advance the cooperation with the air curtain that the air curtain piece formed, make the culinary art person be in the region that is full of clean air and breathe, and then reduced the possibility of inhaling the oil smoke, promoted human health.

Optionally, the air outlet direction of the purifying air outlet is adjustable.

In this embodiment, the purge outlet may be adjusted in the direction of the air flow as desired to allow for better circulation of the air flow within the kitchen and better blowing of the purged air toward the cook.

Optionally, the range hood is movably provided with a wind direction adjusting part at the purifying air outlet, and the wind direction adjusting part can adjust the opening of the purifying air outlet, so that the air flow flowing out of the purifying air channel through the air curtain air outlet can be adjusted.

In this embodiment, wind direction regulating part and purification air outlet swing joint to through its control to the aperture of purification air outlet in order to change the air current size of air curtain air outlet, make the two realize the association, so can satisfy the wind-force regulation demand through simple structure.

Optionally, at least two purifying air outlets are arranged on the front side of the casing at intervals in the transverse direction, and one purifying air outlet is correspondingly provided with one air curtain air outlet.

In this embodiment, the purge outlet is provided with at least two at a lateral interval in the front of the cabinet, so that a maximum wind sweeping range can be ensured.

Optionally, the air curtain air outlet extends in a lateral width direction of the chassis.

In this embodiment, this arrangement can be such that the air flow blown out by the air curtain member effectively blocks the escape of the oil smoke.

Optionally, the length of the air curtain air outlet extending in the transverse direction of the machine shell is greater than one half of the transverse dimension of the machine shell.

Optionally, the housing includes a fume collection hood at a bottom thereof, the purification assembly and the air curtain member being located within the fume collection hood;

The purification air outlet, the air curtain air outlet, the purification air inlet and the smoking opening are sequentially arranged in the height direction of the fume collecting hood.

In this embodiment, the purifying air outlet, air curtain air outlet and smoke suction port are offered in proper order in the direction of height of collection petticoat pipe, set up like this can let most oil smoke flow through smoke exhaust wind channel discharge earlier through the smoke suction port, and little unabsorbed oil smoke is inhaled through the purifying air intake of top, filters through purifying assembly again, and the power distribution of smoke abatement in-process is reasonable like this, and the efficiency of smoke abatement is higher.

Optionally, the collection petticoat pipe is including having the front side open-ended main cover body, connect the main cover body and splice front panel and lower apron in the front side opening, the lower apron is located the below of front panel, seted up on the front panel the purification air outlet, the lower apron include with the first apron that the front panel links to each other, first apron inclines towards the rear side and personally submits the acute angle setting with the level, wherein, seted up on the first apron the air curtain air outlet.

In this embodiment, the first apron is towards the rear side slope and personally submit the acute angle setting with the level for the wind curtain air outlet that sets up on it blows out is towards the wind curtain air current of front lower side, can be fine in this way keep apart cooking person and oil smoke, reduce the possibility that human body inhaled the oil smoke.

Optionally, the lower cover plate further comprises a second cover plate and a third cover plate, the first cover plate, the second cover plate and the third cover plate are sequentially connected from top to bottom and are arranged in an included angle mode, and the purifying air inlet is formed in the second cover plate.

In this embodiment, the layout is rational.

Optionally, the smoking port comprises an upper smoking port arranged on the second cover plate and a lower smoking port formed by the cooperation of the third cover plate and the main cover body.

In this embodiment, the setting of two upper and lower smoking mouthfuls, the overall arrangement is reasonable, can more effective oil smoke of getting rid of.

Optionally, the number of the purifying air inlets corresponds to that of the purifying air outlets, at least two purifying air inlets are formed, and the upper smoking openings are located between two adjacent purifying air inlets.

In this embodiment, the upper smoke suction port plays a main role in removing upwardly escaping smoke, and the upper smoke suction port is arranged between two adjacent purifying air inlets, so that upwardly escaping smoke is mainly removed by the smoke suction port.

Optionally, a purifying air duct in the purifying component is communicated with the purifying air inlet and the purifying air outlet, and the purifying component is arranged on two opposite sides of the smoke exhaust air duct.

In this embodiment, the number of the purge components corresponds to the number of the purge outlets, so that the control is more flexible.

Optionally, the air curtain piece is including being the air duct that rectangular set up, the air duct offered with purification wind channel intercommunication air inlet, offered the air exit that extends at its length direction on the air duct, the air exit with the air curtain air outlet corresponds the intercommunication, wherein, the air exit with the air curtain air outlet all is rectangular form.

In this embodiment, the elongate configuration of the curtain member may facilitate the formation of a wider coverage area curtain.

Optionally, the air curtain piece further comprises a mounting part connected with the air duct, and the air curtain piece is detachably connected with the fume collecting hood through the mounting part.

In this embodiment, the mounting portion is provided by the air curtain member to be detachably connected with the fume collecting hood, so that the disassembly and assembly are more convenient.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of a range hood according to an embodiment of the present invention;

Fig. 2 is a perspective view of the range hood of fig. 1 from a top view;

fig. 3 is an exploded view of the range hood of fig. 1, showing the hidden part of the main hood;

FIG. 4 is a schematic view of the range hood of FIG. 1 in a hood portion with the lower cover plate and front panel removed;

FIG. 5 is a schematic diagram of the structure of FIG. 4 from another perspective;

FIG. 6 is a schematic top view of the structure of FIG. 4;

FIG. 7 is a schematic view of the structure of FIG. 6 with the lower cover plate removed;

Fig. 8 is a schematic front view of the range hood of fig. 1;

FIG. 9 is a cross-sectional view taken at A-A of FIG. 8, showing the purge outlet directed obliquely upward;

FIG. 10 is a cross-sectional view taken at A-A of FIG. 8, showing the purge outlet directed obliquely downward for air delivery;

FIG. 11 is a cross-sectional view taken at B-B in FIG. 8, showing the purge outlet directed obliquely downward for air outflow;

Fig. 12 is a schematic view illustrating air circulation of the range hood of fig. 1 in a view angle state;

Fig. 13 is a schematic view illustrating air circulation of the range hood of fig. 1 in another view angle state.

Reference numerals illustrate:

Reference numerals	Name of the name	Reference numerals	Name of the name
				1	Casing of machine	1251	Purifying air inlet
11	Fan cover	126	Third cover plate
				12	Fume collecting hood	20	Purification assembly
121	Main cover body	21	Purifying fan
				122	Front panel	22	Filter element
1221	Purifying air outlet	30	Air curtain piece
				123	Lower cover plate	301	Air duct
1231	Lower smoking mouth	302	Mounting part
				1232	Upper smoking mouth	303	Air outlet
124	First cover plate	40	Wind direction adjusting piece
				1241	Air curtain air outlet	50	Oil receiving box
125	Second cover plate	200	Kitchen

The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that all the directional indicators in the embodiments of the present invention are only used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicators are correspondingly changed.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between the embodiments can be mutually combined, but are necessary to be based on the realization that a person of ordinary skill in the art can realize, and when the combination of the technical solutions contradicts or cannot be realized, the combination of the technical solutions is not considered to exist and is not within the protection scope required by the invention.

The invention provides a range hood.

Referring to fig. 1 to 3, in the embodiment of the invention, the range hood includes a housing 1, a purifying assembly 20 and an air curtain member 30, the housing 1 is provided with a smoke exhaust duct and a smoke suction port communicating with the smoke exhaust duct, the purifying assembly 20 is disposed in the housing 1, the purifying assembly 20 is formed with a purifying duct (not labeled), the purifying duct and the smoke exhaust duct (not labeled) are independent from each other, the housing 1 is further provided with a purifying air inlet 1251 and a purifying air outlet 1221 communicating with the purifying duct, the air curtain member 30 is mounted on the housing 1 and is communicated with the purifying duct, the housing 1 is provided with an air curtain air outlet 1241 corresponding to the air curtain member 30, and part of air in the purifying duct is blown out from the air curtain air outlet 1241 after passing through the air curtain member 30.

The purifying air duct and the smoke exhaust air duct in the range hood are mutually independent, so that the range hood has the function of the traditional range hood, and in the use process, a smoke exhaust port is communicated with indoor installation environments such as a kitchen 200 where the range hood is positioned, wherein the range hood also comprises a smoke exhaust port which is communicated with the smoke exhaust air duct and is communicated with the outside, and a smoke exhaust fan which drives air flow to be sucked into the smoke exhaust air duct through the smoke exhaust port and is discharged through the smoke exhaust port is arranged, and the smoke exhaust fan can be a centrifugal fan, an axial flow fan and the like. In the use, the range hood is installed in the top of a kitchen range, and the oil smoke that produces during the culinary art will be mostly through the suction flue of smoking mouth to outside through the discharge port discharge chamber, in whole use, can also exist a small amount of oil smoke escape to in the kitchen environment, can't all exhaust circumstances. Therefore, the application further provides a purifying component 20 in the casing 1 of the range hood, so that the oil smoke scattered around the range hood or dissipated into the environment of the kitchen 200 can enter the purifying air duct through the purifying air inlet 1251, fresh air is formed through the purifying and filtering actions of the purifying component 20, and then is discharged to the indoor environment of the kitchen 200 through the purifying air outlet 1221. Meanwhile, because the air curtain piece 30 is communicated with the purifying air duct, part of the purified air can also blow out an air curtain (or an air curtain) in front of the range hood through the effect of the air curtain piece 30, the air curtain can block the fume in the fume dissipation process, and a barrier can be provided to separate a cooking person from a cooking bench which is used as a fume generation source, so that the amount of fume sucked by a human body can be reduced, and the health of the human body is ensured.

That is, according to the technical scheme of the invention, the purification assembly 20 is arranged in the casing 1 of the range hood, the purification assembly 20 is provided with the purification air channel independent of the smoke exhaust air channel, the casing 1 is provided with the purification air inlet 1251 and the purification air outlet 1221 which are communicated with the purification air channel, the fume escaping to the environment of the kitchen 200 can be further exhausted in the process of exhausting the smoke exhaust air channel through the effect of the purification assembly 20, the environment of the kitchen 200 can be improved, the quantity of the fume absorbed by a human body is reduced, the health of the human body is improved, the air curtain piece 30 is further arranged in the casing 1, the purification air channel is communicated with the air curtain piece 30, the casing 1 is provided with the air curtain air outlet 1241 which is correspondingly connected with the air curtain piece 30, therefore, the air curtain forms the air curtain of the purified clean air flow outside the range hood by the effect of the air curtain 1241, on one hand, the air curtain can serve as a barrier effect, the escape phenomenon of the fume in the process of leading to the smoke exhaust air channel can be reduced, and the fume can be further blocked from the cooking fume located in front of the range hood, so that the health of the human body can be further improved.

In an embodiment, referring to fig. 3 to 6, the above-mentioned purifying assembly 20 includes a purifying fan 21 and a filtering member 22, wherein the filtering member 22 may be located in front of the purifying fan 21 in the airflow flowing direction, and the airflow enters from the purifying air inlet 1251 under the driving of the purifying fan 21, flows through the purifying fan 21 under the filtering action of the filtering member 22, and finally is discharged from the purifying air outlet 1221 and the air curtain air outlet 1241, and the purifying fan 21 may be a centrifugal fan, an axial flow fan, a cross flow fan, etc., which is not limited in this application, and the purifying fan 21 may be selected as a centrifugal fan based on the consideration of cost, volume, etc. In the cooking process, edible oil and food undergo a series of chemical reactions such as oxidation, cracking, polymerization and the like at high temperature, a large amount of organic smoke is evaporated, and part of decomposed substances are dispersed into air in the form of oil mist to form oil smoke. The oil fume includes edible oil and its heated decomposed or cracked product, and includes the products of physical and chemical reaction of protein, polymer and other seasoning in food, and is one kind of matter in gas, liquid and solid state. Generally, the emission (Particulate Matter Emissions) of particulates, which are composed of liquids and solids, in the soot emission (Volatile Organic Compounds Emissions) of volatile organic compounds, which are referred to as PME, is defined as VOCs. The fume consists of the two substances, wherein VOCs can be regarded as fume smell. In order to effectively filter and remove the oil smoke, the filter 22 of the present application may be, for example, a HEPA filter, where the HEPA filter may include PP filter paper (polypropylene filter paper), glass fiber, PTFE filter paper (polytetrafluoroethylene filter paper), nanofiber, melt-blown polyester non-woven fabric, etc., and has the characteristics of large dust holding capacity and high filtering precision, the filtering efficiency of the oil smoke particulate matter may exceed 90%, and the oil smoke particulate matter may be processed into a required size and shape according to the model, and it is understood that the material selection of the filter 22 may also be adjusted according to the needs, which is not limited in the present application.

In order to better direct the cleaned air toward the cook, in some embodiments, the cleaned air outlet 1221 is positioned on the front side of the cabinet 1, and the air curtain member 30 and the air curtain air outlet 1241 are positioned adjacent the air outlet. Through setting up clean air outlet 1221 in the front of casing 1, can be with the at least partial air current of air after purifying can directly blow the culinary art person that is located range hood the place ahead, and air curtain air outlet 1241 sets up adjacent clean air outlet 1221, the air that so clean air outlet 1221 blown out can advance the cooperation with the air curtain that forms through air curtain air outlet 1241 blows out, thereby limit a region covered by clean air, make the culinary art person breathe in the region that is full of clean air, namely clean air outlet 1221 is located the front of casing 1 and air curtain air outlet 1241 sets up two means adjacent the air outlet, make the region covered by the air current that both blow out more match the respiratory region of culinary art person, and then reduce the culinary art person and inhale the possibility of oil smoke, promoted human health.

In some embodiments, referring to fig. 8 to 13, the air outlet direction of the purge air outlet 1221 is adjustable. Because the kitchen 200 provided with the range hood is different in space size, the height of a cooker and other factors, the range of the breathing zone matched with the cooker and the airflow direction capable of disturbing the airflow in the environment of the kitchen 200 are different, and therefore, the air outlet direction can be adjusted according to actual needs by setting the air outlet direction of the purifying air outlet 1221 in an adjustable mode, so that better airflow circulation can be realized in the kitchen 200 and purified air can be better blown to the cooker. For example, taking the air circulation diagram shown in fig. 12 as an example, when the range enclosed by the dashed frame schematically represents the kitchen 200 space, when the purified air outlet 1221 can blow the air flow obliquely upward (as shown in fig. 9, α may be less than 90 degrees), the air flow blown out obliquely upward can effectively disturb the air in the upper region of the kitchen 200 space, and sink under the action of gravity, and flow back to the smoke exhaust port of the extractor hood from the lower region of the kitchen 200 space, so that the oil smoke escaping into the kitchen 200 environment can be effectively removed, and from the air flows upward in fig. 12 and 13, we can see that under the suction effect of the smoke exhaust port, the air flow blown upward from the lower region of the kitchen 200 environment can attract the air flow blown out by the air curtain air outlet 1241, so that the direction of the air curtain blown out by the air curtain 1241 is changed to form a shape, and in front of the extractor hood, the air curtain in front of the vortex shape can be directly in front of the extractor hood, so that the air curtain in front of the vortex shape can be fully aligned with the air curtain 1241, and the human body can breathe out together with the air curtain air flow of the upper region of the kitchen 200 can be reduced, so that the human body can breathe out in a large region and clean.

In order to realize the adjustable air outlet direction of the purge air outlet 1221, please refer to fig. 3 to 5 again, in an embodiment, the range hood is movably installed with a wind direction adjusting member 40 at the purge air outlet 1221, and the wind direction adjusting member 40 can adjust the opening of the purge air outlet 1221, so that the air flow of the purge air duct flowing out through the air curtain air outlet 1241 can be adjusted. The wind direction adjusting member 40 of the present application may be installed at the purified air outlet 1221 in a grid structure, wherein two ends of the grid are rotatably connected with the purified air outlet 1221, and in the wind direction adjusting process, the wind direction adjusting member may be manually adjusted, or may be provided with a driving motor, and the grid is automatically adjusted in a gear transmission manner through the driving motor. Meanwhile, the wind direction adjusting member 40 of the present application is in the form of a grille, and the air flow size of the air curtain air outlet 1241 is changed by controlling the opening of the purified air outlet 1221, so that the two are associated, and thus the wind direction adjusting member can meet the wind force adjusting requirement through a simple structure. For example, in the use process, it is found that more oil smoke escapes to the environment of the kitchen 200, the flow of the air flow in the environment of the kitchen 200 needs to be quickened, the air flow blown out from the purifying air outlet 1221 can be made larger, the air flow blown out from the air curtain air outlet 1241 is made smaller, or in the cooking process, under the condition that the suddenly generated oil smoke is found to be larger, the air quantity of the air curtain air outlet 1241 can be increased by reducing the air quantity of the purifying air outlet 1221 through the adjustment of the air direction adjusting piece 40, so that a large amount of oil smoke generated by a cooking bench can be better blocked from directly upwelling and reaching the breathing zone of a cooking person, in the adjustment process of the air curtain air outlet 1241 and the purifying air outlet 1221, the oil smoke absorbing device can be further provided with a sensor for detecting the oil smoke concentration, the opening degree of the purifying air outlet 1221 is automatically controlled through the oil smoke concentration information and the set control logic, and the air outlet size of the air curtain air outlet 1241 is automatically adjusted, so that the range hood is more intelligent and is more convenient to use.

In an embodiment, at least two purifying air outlets 1221 are disposed at a front side of the casing 1 at intervals, the purifying air inlets 1251 correspond to the number of purifying air outlets 1221, and an air curtain member 30 and an air curtain air outlet 1241 are disposed at a purifying air outlet 1221. In the scheme shown in the drawings, one purifying air outlet 1221 is respectively arranged on the left side and the right side of the front surface of the casing 1, and the number of the purifying assemblies 20 is also two which are matched with the number of the purifying air outlets 1221, so that in the operation process, air enters through one purifying air inlet 1251 and is blown out from one purifying air outlet 1221 by driving the purifying assemblies 20, and at least two purifying air outlets 1221 are transversely arranged at intervals on the front surface of the casing 1, so that the maximum air sweeping range can be ensured. Further, the present application sets the smoke exhaust duct in the middle of the casing 1, and sets a purifying component 20 on each of the left and right sides of the smoke exhaust duct to form a purifying duct, and the purifying duct is connected to a purifying air inlet 1251 and a purifying air outlet 1221, so that reasonable layout is realized in a limited space, and the structure is relatively compact under the condition of strong overall smoke exhaust function. The number of the purifying assemblies 20 corresponds to the number of the purifying air outlets 1221, so that in the use process, the operation of the purifying assemblies 20 on the left side and the right side of the casing 1 and the purifying power in the operation process can be controlled according to the needs by controlling the independent purifying assemblies 20, so that the use is more flexible, for example, in the case of double cooking tops, the purifying air inlets 1251 on the left side and the right side generally correspond to one cooking top respectively, and when one cooking top is used, the purifying assemblies 20 corresponding to the cooking top positions can be independently controlled to be started, so that energy sources can be saved, and the use requirements can be met.

It will be appreciated that in other embodiments, the number of purge air inlets 1251, purge air outlets 1221, air curtain air outlets 1241, purge assemblies 20, and air curtain members 30 may be adjusted as desired. For example, in the present application, 1 or 3 purge outlets 1221 may be provided, even if one purge outlet 1221 is provided on each of the left and right sides in the drawing, 1 air curtain member 30 and 1 air curtain outlet 1241 may be provided, two air curtain outlets 1241 may be provided by providing 1 air curtain member 30, or 1 air curtain outlet 1241 may be provided on each of the air curtain members 30 and the air curtain outlets 1241 in the case where two purge outlets 1221 are provided at a left and right interval, and the air curtain outlets 1241 extend continuously from one purge outlet 1221 to the other purge outlet 1221, and in addition, the purge unit 20 may be provided with 1 and two sub-air ducts to communicate with one purge outlet 1221, so that the manufacturing cost may be reduced, and other combinations of the two purge outlets may not be listed.

In the present application, the air curtain air outlet 1241 extends in the transverse width direction of the casing 1, and in the case that the number of the purge air outlets 1221 and the air curtain air outlets 1241 is set, the length of the air curtain air outlet 1241 extending in the transverse direction of the casing 1 is greater than or equal to the length of the purge air outlet 1221 extending in the transverse direction of the casing 1. And as a preferred mode, the length of the air curtain air outlet 1241 extending in the transverse direction of the casing 1 is greater than one half of the transverse dimension of the casing 1, so that the air flow width blown out by the air curtain air outlet 1241 can effectively cover the area range of the front side of the range hood, the generated air curtain width is enough to effectively block the escape of oil smoke, and the possibility of human body sucking the oil smoke is reduced.

In some embodiments, please refer to fig. 3, 5, and fig. 6 and 7 again, the air curtain member 30 includes an air duct 301 disposed in a long shape, the air duct 301 is provided with an air inlet communicated with the purifying air duct, the air duct 301 is provided with an air outlet 303 extending in a length direction thereof, and the air outlet 303 is correspondingly communicated with the air curtain air outlet 1241, wherein the air outlet 303 and the air curtain air outlet 1241 are both in a long shape. The air curtain member 30 of this embodiment may be made of plastic or metal, and in one embodiment, the cross-sectional shape of the air curtain member 30 may be trapezoidal, but it may also be elliptical, rectangular, etc., which is not limited in this application. The air curtain member 30 is of an air duct 301 which is arranged in a long shape, and the air curtain member 301 is beneficial to forming an air curtain with larger coverage range in front of the range hood, so that the aims of effectively preventing oil smoke from escaping and preventing the oil smoke from rushing to a cooking person are fulfilled. Further, the air curtain member 30 further includes a mounting portion 302 connected to the air duct 301, and the air curtain member 30 is detachably connected to the casing 1 through the mounting portion 302. In this embodiment, the mounting portion 302 may be a connection ear structure, the connection ear is provided with a threaded hole, the mounting portion 302 is connected with the casing 1 by a screw, and of course, the mounting portion 302 and the casing 1 may be detachably fixed in a manner of, for example, fastening connection pins, and may be detachably connected, so that the later assembly, disassembly and maintenance are more convenient.

The casing 1 of the application comprises a fan cover 11 and a fume collecting hood 12, wherein the fume collecting hood 12 is connected with the bottom of the fan cover 11 and is integrally arranged at the bottom of the casing 1, and the fume collecting hood 12 is closer to a cooking bench. The purification assembly 20 and the air curtain member 30 are all located in the fume collecting hood 12, wherein the purification air outlet 1221, the air curtain air outlet 1241, the purification air inlet 1251 and the fume suction opening are sequentially opened in the height direction of the fume collecting hood 12. In this embodiment, the purifying air outlet 1221, the air curtain air outlet 1241 and the smoke suction opening are sequentially arranged in the height direction of the smoke collecting hood 12, so that most of the smoke is sucked by the smoke suction opening and flows through the smoke exhaust duct to be exhausted, and a small part of the non-absorbed smoke is sucked through the purifying air inlet 1251 above and filtered by the purifying component 20, so that the power distribution in the smoke removing process is reasonable, the purifying component 20 cannot excessively suck the smoke, the service life of the filtering piece 22 is shortened, the replacement is too frequent, and the use cost is increased.

The fume collecting hood 12 includes a main hood body 121 having a front opening, a front panel 122 connected to the main hood body 121 and spliced in the front opening, and a lower cover 123, wherein the lower cover 123 is located below the front panel 122, and the connection manner between the front panel 122 and the lower cover 123 and the main hood body 121 may be a detachable fixed connection manner, such as screw connection, snap connection, or a non-detachable fixed connection manner, such as welding, riveting, or the like, and the connection manner between the front panel 122 and the lower cover 123 and the main hood body 121 is preferably a detachable fixed connection manner in view of disassembly and maintenance. The front panel 122 is provided with a purifying air outlet 1221, the lower cover plate 123 includes a first cover plate 124 connected to the front panel 122, the first cover plate 124 is inclined towards the rear side and forms an acute angle with the horizontal plane, wherein the first cover plate 124 is provided with the air curtain air outlet 1241.

The main cover 121 of the present application comprises a rear wall plate, an upper wall plate connected to the upper side of the rear wall plate, and side wall plates connected to two opposite sides of the rear wall plate, the lower end of the rear wall plate is provided with an oil receiving box 50, the front panel 122 and the lower cover plate 123 are capped in front of the rear wall plate, and two opposite sides of the front panel 122 and the lower cover plate 123 are respectively connected with two side wall plates, the upper side of the front panel 122 is connected with the upper wall plate, the lower side of the front panel 122 is connected with the lower cover plate 123, in this embodiment, the first cover plate 124 is inclined from top to bottom towards the rear side, and the first cover plate 124 and the horizontal surface are disposed at an acute angle, so that the air curtain air outlet 1241 opened on the first cover plate is blown out towards the front lower side, and the upper side is combined with the upper side.

Further, the lower cover 123 further includes a second cover 125 and a third cover 126, the first cover 124, the second cover 125 and the third cover 126 are sequentially connected from top to bottom and are disposed at an included angle, and the purifying air inlet 1251 is opened in the second cover 125. The first cover plate 124, the second cover plate 125 and the third cover plate 126 gradually form a bending trend towards the rear side of the range hood, and the structure is provided in this embodiment, so that the layout is reasonable, the structure is more consistent with the hydrodynamic characteristics, and meanwhile, the plate body of the three-section bending structure of the lower cover plate 123 is also beneficial to condensing grease in the oil smoke when the oil smoke passes through the flow guide of the lower cover plate 123, and converging the grease into the oil receiving box 50 through the action of gravity.

In some embodiments, the smoking openings include an upper smoking opening 1232 formed in the second cover plate 125 and a lower smoking opening 1231 formed by the cooperation of the third cover plate 126 and the main housing 121. Through the setting of two upper and lower smoke absorbing mouthfuls, rationally distributed, be located the lower smoke absorbing mouthfuls 1231 of below and be close to the top of a kitchen range and inhale the flue that discharges fume and discharge, the flue that discharges fume that the minority upwards surges then mainly inhales the flue that discharges fume again through last smoke absorbing mouthfuls 1232, and the fume that does not get into the flue that discharges fume then gets into the purification wind channel through purifying air intake 1251 and filters to under the condition that can effectually get rid of the oil fume through multiple suction effect, also can not make purifying assembly 20 operation burden overweight.

In the above-described embodiments, the purge air outlet 1221, the air curtain air outlet 1241, the purge air inlet 1251, and the smoke suction port are all disposed on the front surface of the smoke collection hood 12, and it is to be understood that the positions of the purge air outlet 1221, the air curtain air outlet 1241, the purge air inlet 1251, and the smoke suction port may be adjusted as needed, for example, the purge air inlet 1251 may be disposed on a side surface of the smoke collection hood 12 or on a top surface of the smoke collection hood 12, which is not limited to this embodiment.

Optionally, the smoke exhaust fan in the smoke exhaust duct and the purifying fan 21 in the purifying component 20 are connected to the same controller, that is, the smoke exhaust ventilator controls the smoke exhaust duct and the purifying duct through the same controller, the controller is usually arranged on the fan cover 11, and in other embodiments, the smoke exhaust ventilator can be provided with two different controllers 3 to respectively control the smoke exhaust fan and the purifying fan 21.

Optionally, the purifying fan 21 shares a control switch, so when the smoke exhaust fan is turned on to work through the control switch, the purifying assembly 20 is automatically turned on to work at the same time, that is, the cooperative work of turning on the smoke exhaust fan and the purifying assembly 20 by one key can be realized. The control switch is typically electrically connected to the controller to effect control of the on and off. When sharing a single control switch, the control switch is typically provided on the hood 12.

However, the present design is not limited thereto, and in other embodiments, the smoke exhaust fan and the purification assembly 20 may also use different control switches, so as to realize independent on/off control of the smoke exhaust fan and the purification assembly 20, so that the user can use the respective functions of the smoke exhaust fan and the purification assembly 20 more flexibly. When different control switches are used, the two control switches may be both disposed on the fume collecting hood 12, typically, a control panel is disposed on the front of the fume collecting hood 12, and when the fume extractor and the purification assembly 20 share one control switch, the control switch is typically integrated on the control panel, i.e., the control switch is disposed on the front of the fume collecting hood 12, which is more convenient for the user to operate.

The foregoing description is only of the optional embodiments of the present invention, and is not intended to limit the scope of the invention, and all the equivalent structural changes made by the description of the present invention and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the invention.

Claims

1. A range hood, comprising:

The air curtain piece is arranged on the machine shell and is communicated with the purification air duct, an air curtain air outlet corresponding to the air curtain piece is formed in the machine shell, and part of air in the purification air duct is blown out from the air curtain air outlet after passing through the air curtain piece;

The shell comprises a fume collecting hood positioned at the bottom of the shell, the purification assembly and the air curtain piece are positioned in the fume collecting hood, the fume collecting hood comprises a main hood body with a front side opening, a front panel and a lower cover plate, wherein the front panel is connected with the main hood body and spliced in the front side opening, the lower cover plate is positioned below the front panel, the front panel is provided with the purification air outlet, the lower cover plate comprises a first cover plate connected with the front panel, the first cover plate is inclined towards the rear side and is arranged at an acute angle with the horizontal plane, and the air curtain air outlet is formed in the first cover plate;

The range hood is characterized in that a wind direction adjusting piece is movably arranged at the purification air outlet, and the wind direction adjusting piece can adjust the opening of the purification air outlet, so that the air flow flowing out of the purification air channel through the air curtain air outlet can be adjusted.

2. The range hood of claim 1 wherein said purge outlet is located on a front face of said housing and said air curtain member is disposed adjacent said purge outlet.

3. The range hood of claim 2, wherein the purge outlet has an adjustable air outlet direction.

4. The range hood of claim 2, wherein at least two of said purge outlets are disposed at a lateral interval on a front side of said housing, and one of said purge outlets is correspondingly disposed with one of said air curtain outlets.

5. The range hood of claim 2, wherein the air curtain outlet extends in a lateral width direction of the cabinet.

6. The range hood of claim 5 wherein the air curtain outlet extends in the transverse direction of the housing for a length greater than one-half the transverse dimension of the housing.

7. The range hood according to any one of claims 2 to 6, wherein the purge air outlet, the air curtain air outlet, the purge air inlet, and the smoke suction port are opened in this order in a height direction of the smoke collecting hood.

8. The range hood of claim 1, wherein the lower cover plate further comprises a second cover plate and a third cover plate, the first cover plate, the second cover plate and the third cover plate are sequentially connected from top to bottom and are arranged in an included angle, and the purifying air inlet is formed in the second cover plate.

9. The range hood of claim 8 wherein the smoke exhaust includes an upper smoke exhaust opening in the second cover plate and a lower smoke exhaust opening formed by the cooperation of the third cover plate and the main housing.

10. The range hood of claim 9 wherein the number of said purge air intakes corresponds to the number of said purge air outlets and at least two are provided, said upper smoke intake being located between two adjacent purge air intakes.

11. The range hood of claim 10 wherein a purge air duct in the purge assembly communicates with a purge air inlet and a purge air outlet, and the purge assembly is disposed on opposite sides of the exhaust air duct.

12. The range hood of claim 1, wherein the air curtain member comprises an air duct which is arranged in a long shape, the air duct is provided with an air inlet which is communicated with the purifying air duct, the air duct is provided with an air outlet which extends in the length direction, and the air outlet is correspondingly communicated with the air curtain air outlet, wherein the air outlet and the air curtain air outlet are both in a long shape.

13. The range hood of claim 12 wherein the air curtain member further comprises a mounting portion coupled to the duct, the air curtain member being removably coupled to the hood by the mounting portion.