CN108592129A - Internal-circulation type range hood - Google Patents

Abstract

The invention discloses a kind of internal-circulation type range hood, internal-circulation type range hood includes：Shell, filter chamber is limited in shell, and filter chamber has the air inlet and air outlet being connected to indoor environment；Wind wheel component, wind wheel component are rotatably arranged in filter chamber to drive air to be flowed towards air outlet by air inlet；Net-filter assembly, net-filter assembly is set in filter chamber, net-filter assembly includes the first filtration members and the second filtration members, it is discharged successively by the air outlet after the filtering of the first filtration members and the second filtration members into the air in filter chamber, wherein the first filtration members for filtering air in oil smoke steam, the second filtration members for filtering air in PM particulate matters and/or formaldehyde.Range hood according to the present invention can not only cross oil smoke, steam in air filtering, can also cross PM particulate matters and formaldehyde in air filtering, good air purification effect.

Description

Internal circulation range hood

technical field

The invention relates to the technical field of range hoods, in particular to an internal circulation type range hood.

Background technique

The range hoods in the related art are generally only capable of filtering oil fume and water vapor in the air, but cannot perform deeper filtering of the air, for example, cannot filter PM particles and formaldehyde in the air.

Contents of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art. For this reason, an object of the present invention is to propose an internal circulation type range hood, which can not only filter oil fumes and water vapor in the air, but also filter PM particles and formaldehyde in the air, and purify the air. The effect is good.

According to the internal circulation range hood of the embodiment of the present invention, the internal circulation range hood includes: a housing, the housing defines a filter cavity, and the filter cavity has an air inlet and an air outlet communicating with the indoor environment the wind wheel assembly, the wind wheel assembly is rotatably arranged in the filter chamber to drive air to flow from the air inlet to the air outlet; the filter screen assembly, the filter screen assembly is arranged in the filter chamber Inside, the filter screen assembly includes a first filter element and a second filter element, and the air entering the filter chamber is filtered by the first filter element and the second filter element in sequence and then discharged through the air outlet , wherein the first filter element is used to filter oil fume and water vapor in the air, and the second filter element is used to filter PM particles and/or formaldehyde in the air.

The internal circulation range hood according to the embodiment of the present invention can not only filter oil fumes and water vapor in the air, but also filter PM particles and formaldehyde in the air, and has a good air purification effect.

In addition, the internal circulation range hood according to the embodiment of the present invention may also have the following additional technical features:

According to an embodiment of the present invention, the first filter element is a metal filter screen or a PP filter screen.

According to an embodiment of the present invention, the second filter is an activated carbon filter or a HEPA filter.

According to an embodiment of the present invention, the air inlet and/or the air outlet are formed as a ring structure extending circumferentially around the casing, and when the air inlet is formed as a ring structure extending circumferentially around the casing In the case of an annular structure, both the first filter element and the second filter element are formed in an annular structure opposite to the air inlet, and the second filter element is arranged in the first filter element.

According to an embodiment of the present invention, the filter screen assembly is detachably arranged in the filter cavity.

According to an embodiment of the present invention, the first filter element is detachably connected to the second filter element.

According to an embodiment of the present invention, an ultraviolet lamp is also provided in the filter cavity.

According to an embodiment of the present invention, the ultraviolet lamp is arranged adjacent to the air inlet, the ultraviolet lamp includes a lamp board and an ultraviolet lamp bead arranged on the lamp board, and the ultraviolet lamp bead is arranged toward the air inlet .

According to an embodiment of the present invention, the ultraviolet lamp is arranged adjacent to the air outlet, the ultraviolet lamp includes a lamp board and an ultraviolet lamp bead arranged on the lamp board, and the ultraviolet lamp bead is arranged toward the air outlet .

According to an embodiment of the present invention, the ultraviolet lamp is a UVC-LED lamp.

According to an embodiment of the present invention, a guide assembly is provided between the wind wheel assembly and the air outlet to guide the air filtered by the filter assembly toward the air outlet.

According to an embodiment of the present invention, the air guide assembly includes an upper air channel plate and a lower air channel plate oppositely arranged in the up and down direction, a guide air channel is defined between the upper air channel plate and the lower air channel plate, the The guide air duct includes an inlet disposed toward the wind wheel assembly and an outlet connected to the air outlet, and the cross-sectional area of the guide air duct decreases in a direction from the inlet toward the outlet.

According to an embodiment of the present invention, the wind wheel assembly includes a wind wheel and a motor that drives the wind wheel to rotate, at least a part of the upper air duct plate forms a downwardly protruding arc structure, and the arc structure The lowest point is lower than the highest point of the wind wheel.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and comprehensible from the description of the embodiments in conjunction with the following drawings, wherein:

Fig. 1 is a schematic diagram of an internal circulation range hood according to an embodiment of the present invention;

Fig. 2 is a partial structural sectional view of an internal circulation range hood according to an embodiment of the present invention;

Fig. 3 is a partial structural sectional view of an internal circulation range hood according to another embodiment of the present invention;

4 is a schematic diagram of a screen assembly according to an embodiment of the present invention;

Figure 5 is an exploded view of the screen assembly shown in Figure 4;

6 is a schematic diagram of an ultraviolet lamp according to an embodiment of the present invention.

Reference signs:

Smoke machine 100; filter cavity 101; air inlet 102; air outlet 103; hoisting piece 104;

Shell 1; upper shell assembly 11; upper cover 111; air intake grill 112;

Lower shell assembly 12; Lower casing 121; Decorative plate 122;

Wind wheel assembly 2; Wind wheel 21; Motor 22;

Filter screen assembly 3; first filter element 31; second filter element 32;

Ultraviolet lamp 4; lamp board 41; ultraviolet UVC-LED lamp bead 42;

lighting assembly 5;

Upper installation cover 61; lower installation cover 62; installation cavity 601;

The upper air channel plate 71; the lower air channel plate 72; the diversion air channel 701.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

This application is based on the inventor's discovery and recognition of the following facts and problems:

The range hoods in the related art are generally only capable of filtering oil fume and water vapor in the air, but cannot perform deeper filtering of the air, for example, cannot filter PM particles and formaldehyde in the air.

In order to further filter the air, it is usually necessary to install an air cleaner indoors to remove PM particles and formaldehyde, thereby increasing the cost of air purification.

In addition, most of the current air purifiers are desktop-based, and it is inconvenient to use due to the large footprint of the desktop air purifier.

Furthermore, the range hood 100 will breed bacteria, produce peculiar smell and mildew during its long-term use, thus endangering people's health.

In order to solve at least one of the technical problems in the above-mentioned prior art, the present application proposes an internal circulation range hood 100, which can not only filter the oil smoke and water vapor in the air, but also Filter PM particles and formaldehyde in the air, and the air purification effect is good. Therefore, it is no longer necessary to separately install an air purifier for purifying PM particulate matter and formaldehyde, thereby not only reducing the cost of air purification, but also saving the space for installing the air purifier.

The following describes an internal circulation range hood 100 according to an embodiment of the present invention with reference to FIGS. 1-6 .

Referring to FIGS. 1-6 , an internal circulation range hood 100 according to an embodiment of the present invention includes: a housing 1 , a wind wheel assembly 2 and a filter screen assembly 3 .

The housing 1 defines a filter chamber 101. The filter chamber 101 has an air inlet 102 and an air outlet 103 communicating with the indoor environment. The wind wheel assembly 2 is rotatably arranged in the filter chamber 101 to drive air from the air inlet 102 toward the air outlet. 103 flow, the filter assembly 3 is set in the filter cavity 101, the filter assembly 3 includes a first filter element 31 and a second filter element 32, the air entering the filter cavity 101 passes through the first filter element 31 and the second filter element in sequence 32 is filtered and discharged through the air outlet 103, wherein the first filter 31 is used to filter oil fume and water vapor in the air, and the second filter 32 is used to filter PM particles and/or formaldehyde in the air.

Specifically, the wind wheel assembly 2 rotates in the filter cavity 101 to form a negative pressure draft, and the air enters the filter cavity 101 through the air inlet 102, and the air passes through the first filter element 31 and the second filter element 32 in the filter cavity 101 in sequence. After being filtered to form clean air, it is discharged through the air outlet 103 . Specifically, the first filter element 31 filters oil fume and water vapor in the air, and the second filter element 32 filters PM particles and/or formaldehyde in the air.

From the above, the internal circulation range hood 100 of the present application sucks the indoor air into the filter chamber 101, and in the filter chamber 101, the filter screen assembly 3 filters and removes the soot, water vapor, PM particles and/or formaldehyde in the air Afterwards, the air is sent back to the indoor environment through the air outlet 103, and there is no need to set a smoke pipe communicating with the external environment, thereby making the kitchen more beautiful and the space layout more flexible.

The internal circulation range hood 100 according to the embodiment of the invention can not only filter oil fume and water vapor in the air, but also filter PM particles and/or formaldehyde in the air, and has a good air purification effect. Therefore, there is no need to separately set up an air purifier for purifying PM particulate matter and/or formaldehyde, thereby not only reducing the cost of air purification, but also saving space for installing the air purifier. The internal circulation range hood 100 of the present application is particularly suitable for being hoisted on an installation base (such as a ceiling) through a hoisting piece 104 , thereby saving space.

It should be noted that the internal circulation range hood 100 of the present application can be installed in the kitchen (for example, suspended on the ceiling of the kitchen) to purify the air in the kitchen. The tube makes the kitchen more beautiful and the space layout more flexible. Of course, it can also be used in a closed kitchen. In addition, the internal circulation range hood 100 of the present application is not limited to be installed in the kitchen, and it can also be installed in other places that need to purify the air.

For example, when a user eats, especially when eating hot pot, a large amount of fume or steam will be generated in the restaurant, so the internal circulation range hood 100 can also be installed in the restaurant (such as hanging on the ceiling of the restaurant) to purify The atmosphere in the restaurant.

In the chessboard room or mahjong room, second-hand smoke is usually produced, so the internal circulation range hood 100 can also be installed in the chessboard room or mahjong room (for example, hoisted on the ceiling of the chessboard room or mahjong room) to purify the chessboard room or mahjong room. The air in the mahjong room.

In one embodiment of the present invention, the first filter element 31 is a metal filter or PP filter, through which oil smoke and water vapor in the air are filtered out, the structure is simple, the cost is low, and the filtering effect is good.

Preferably, the first filter 31 is a high-density metal filter or a high-density PP filter, so that the first filter 31 has a better filtering effect on cooking fume and water vapor.

In one embodiment of the present invention, the second filter 32 is an activated carbon filter or a HEPA high-efficiency filter. When the second filter 32 is an activated carbon filter, the second filter 32 can not only filter out PM particles in the air , It can also filter out formaldehyde in the air, and the air purification effect is good. When the second filter element 32 is a HEPA high-efficiency filter, it can remove the PM particles in the air well. The diameter of the PM particles in the air is generally within the range of 0.1 micron to 10 microns, and the HEPA high-efficiency filter is for 0.1 micron and The effective removal efficiency of 0.3 micron PM particles reaches 99.7%, and the air filtered by the HEPA high-efficiency filter can be regarded as absolutely clean air without PM particles.

Advantageously, the second filter element 32 includes an activated carbon filter screen and a HEPA high-efficiency filter screen, that is, when the air is filtered through the second filter element 32, it is not only filtered through the activated carbon filter screen, but also filtered through the HEPA high-efficiency filter screen, that is, The activated carbon filter and the HEPA high-efficiency filter filter the air together, which makes the air purification effect better.

In one embodiment of the present invention, the air inlet 102 and/or the air outlet 103 is formed as a ring structure extending along the circumference of the housing 1 , that is, in some examples, only the air inlet 102 is formed to extend along the circumference of the housing 1 In some examples, only the air outlet 103 forms an annular structure extending in the circumferential direction of the casing 1; in some examples, as shown in FIGS. The shell 1 is an annular structure extending in the circumferential direction. By configuring the air inlet 102 as an annular structure extending along the circumferential direction of the housing 1, it is beneficial to expand the area of the air inlet 102, thereby increasing the area of the smoke cage, thereby speeding up the circulation speed of the air and improving the purification efficiency of the air. By configuring the air outlet 103 as an annular structure extending along the circumferential direction of the housing 1, it is beneficial to expand the area of the air outlet 103, thereby increasing the air volume, facilitating the circulation of the air, and improving the purification efficiency of the air. Advantageously, as shown in FIGS. 2-3 , the air inlet 102 is arranged on the side of the casing 1, and the air outlet 103 is arranged above the air inlet 102 (for example, it can be arranged on the top of the casing 1). 100 air intake from the side and air exit from the top, which is convenient to further accelerate the flow of air.

Further, referring to FIGS. 1-5 , when the air inlet 102 is formed as a ring structure extending circumferentially around the casing 1, the first filter element 31 and the second filter element 32 are both formed opposite to the air inlet 102 The ring structure, the second filter element 32 is located in the first filter element 31, so that the air entering by the air inlet 102 passes through the first filter element 31 and the second filter element 32 sequentially along the radial direction of the air inlet 102, and then Driven by the wind wheel assembly 2, it is discharged to the air outlet 103. Specifically, when the air passes through the first filter element 31, the first filter element 31 performs primary filtration on the air to filter out oil fume and water vapor in the air; when the air passes through the second filter element 32, the second filter element 32 The air undergoes secondary filtration to remove PM particles and/or formaldehyde from the air. The filter screen assembly 3 has a simple structure, is convenient to manufacture, and has high filtering efficiency.

It can be understood that large particles such as water droplets, grease, PM particles and dust in the air are intercepted in the filter screen assembly 3. As the use time increases, more and more particles accumulate in the filter screen assembly 3. The holes on the component 3 will be blocked by large particles such as oil fumes, PM particles, dust, etc., or the adsorption material in the filter component 3 will reach a saturated state, that is, the filter capacity of the filter component 3 will gradually decrease as the usage time increases. . Therefore, the filter screen assembly 3 needs to be cleaned or replaced regularly. However, the disassembly process of the filter screen assembly 3 in the related art is relatively cumbersome, which makes it difficult to clean and replace the filter screen assembly 3 .

In order to solve the above problems, the filter screen assembly 3 of the present application is detachably arranged in the filter cavity 101 , thereby facilitating the cleaning and replacement of the filter screen assembly 3 .

Wherein, the first filter element 31 and the second filter element 32 can be separately assembled in the filter cavity 101 and separately disassembled from the filter cavity 101 respectively, and of course the first filter element 31 and the second filter element 32 can also be assembled and connected in the filter cavity 101. Together to form a whole, the first filter element 31 and the second filter element 32 are integrally assembled in the filter cavity 101 or the first filter element 31 and the second filter element 32 are disassembled from the filter cavity 101 as a whole, which is convenient for disassembly and assembly .

Further, the first filter element 31 is detachably connected to the second filter element 32 , so that the first filter element 31 and the second filter element 32 can be separated for cleaning or replacement separately.

Since the range hood 100 is used for a long time, it will breed bacteria, produce peculiar smell and mildew, which will endanger people's health. In order to solve this problem, an ultraviolet lamp 4 is also provided in the filter cavity 101 of the internal circulation range hood 100 of the present application. The ultraviolet lamp 4 can emit ultraviolet rays. When ultraviolet rays irradiate odor molecules, they can change the odor of inorganic or organic molecules. The chain structure degrades the odor molecules into low-molecular compounds, so that the odor can be eliminated, and under the irradiation of ultraviolet rays, microorganisms such as molds and bacteria will lose their activity, that is, the ultraviolet lamp 4 has the functions of sterilizing and disinfecting, removing odors, and preventing product aging. Time uses the function of breeding bacteria. By setting the ultraviolet lamp 4 in the filter cavity 101, the air entering the filter cavity 101 can be sterilized and purified by radiation, so as to avoid bacterial growth and mildew in the filter cavity 101, and at the same time remove the bacteria in the filter cavity 101. odor, thereby making the air discharged by the air outlet 103 cleaner.

In an optional embodiment of the present invention, as shown in FIG. 2 and FIG. 3 , the ultraviolet lamp 4 is arranged adjacent to the air inlet 102, and the ultraviolet lamp 4 includes a lamp board 41 and an ultraviolet lamp bead arranged on the lamp board 41. The lamp bead is set toward the air inlet 102 . Therefore, after the indoor air enters the filter chamber 101 from the air inlet 102, it is first sterilized and purified by the ultraviolet lamp 4 and then filtered by the filter assembly 3, so that the sterilization and purification effect is good.

In an optional embodiment of the present invention, as shown in FIG. 2 and FIG. 3 , the ultraviolet lamp 4 is arranged adjacent to the air outlet 103, and the ultraviolet lamp 4 includes a lamp board 41 and an ultraviolet lamp bead arranged on the lamp board 41. The lamp beads are arranged towards the air outlet 103, so that the air in the filter chamber 101 is sterilized and purified by the radiation of the ultraviolet lamp 4 before being discharged from the air outlet 103, and the sterilization and purification effect is good.

In a preferred embodiment of the present invention, as shown in FIG. 2 and FIG. 3 , ultraviolet lamps 4 are arranged in the filter cavity 101 adjacent to the air inlet 102 and adjacent to the air outlet 103 in the filter cavity 101, so that When the machine 100 is in operation, the wind wheel assembly 2 rotates to form a negative pressure draft, and the indoor air enters the filter chamber 101 through the air inlet 102. After the air in the filter chamber 101 first passes through the radiation sterilization and purification of the ultraviolet lamp 4 adjacent to the air inlet 102, Then filter through the filter assembly 3 to filter out other harmful substances such as soot, PM particles and formaldehyde in the air, and then flow back to the indoor environment by the air outlet 103 after being sterilized by the ultraviolet lamp 4 adjacent to the air outlet 103. In this way, bacteria breeding and moldy phenomena at the air outlet 103 and the air inlet 102 can be well avoided, and peculiar smell can be removed well, and the air purification effect of the hood 100 is good.

Advantageously, the ultraviolet lamp 4 is a UVC-LED lamp, and the UVC-LED lamp can generate UVC ultraviolet rays in a stable band, which has good performance in sterilization, deodorization and prevention of bacteria breeding, so that the air purification effect of the hood 100 is better. In addition, it is non-hazardous to the environment and has little corrosion to plastic products. Of course, the present application is not limited thereto, and the ultraviolet lamp 4 may also be an ultraviolet mercury lamp.

In a specific embodiment of the present invention, as shown in FIG. 6, the ultraviolet lamp 4 is a UVC-LED lamp, and the ultraviolet lamp 4 includes a lamp board 41 and an ultraviolet UVC-LED lamp bead 42 arranged on the lamp board 41. The wavelength of UVC-LED lamp beads 42 is 265nm-275nm, the radiation angle of ultraviolet UVC-LED lamp beads 42 is 120°, the number and arrangement of ultraviolet UVC-LED lamp beads 42 are according to the shape of air inlet 102 or air outlet 103 Advantageously, the radiation range of the ultraviolet lamp 4 covers all the air inlet 102 or the air outlet 103, and at this time, the hood 100 has a better sterilization and purification effect on the air. Advantageously, the distance between the ultraviolet UVC-LED lamp bead 42 and the air outlet 103 or the air inlet 102 is in the range of 10 mm to 100 mm, and the sterilization effect is better at this time.

Further, in the examples shown in FIGS. 1-3 , both the air inlet 102 and the air outlet 103 are formed as annular structures extending circumferentially around the housing 1 , and at this time the lamp board 41 can be formed to be connected with the air inlet 102 or the air outlet. On the annular plate opposite to the tuyere 103, the ultraviolet UVC-LED lamp bead 42 includes a plurality, and a plurality of ultraviolet UVC-LED lamp beads 42 are arranged on the lamp plate 41 at intervals along the circumferential direction, so that the radiation range of the ultraviolet lamp 4 is equal to that of the air inlet. 102 or air outlet 103 cover, good sterilization and purification.

Of course, the lamp board 41 can also be formed into an arc plate shape or a plane plate shape, and the lamp board 41 includes a plurality of spaced along the circumferential direction, and each lamp board 41 is provided with at least one (three as shown in FIG. 6 ). ) Ultraviolet UVC-LED lamp beads 42, so that the radiation range of the ultraviolet lamp 4 covers the air inlet 102 or the air outlet 103, and the sterilization and purification are good.

In one embodiment of the present invention, as shown in Fig. 2-Fig. lead. Therefore, it is convenient to speed up the flow of the air, thereby improving the purification efficiency of the air.

Further, referring to Fig. 2-Fig. 3, the air guide assembly includes an upper air channel plate 71 and a lower air channel plate 72 which are oppositely arranged in the up and down direction, and a flow guiding air channel is defined between the upper air channel plate 71 and the lower air channel plate 72 701, the guide air channel 701 includes an inlet set toward the wind wheel assembly 2 and an outlet connected to the air outlet 103, the cross-sectional area of the guide air channel 701 decreases in the direction from the inlet to the outlet, and the structure of the guide assembly is simple, The diversion effect is good. Preferably, referring to Fig. 2-shown in Fig. 3, the ultraviolet lamp 4 is arranged in the guide air duct 701, so that all the air coming out from the wind wheel 21 is discharged from the air outlet 103 after being sterilized and purified by the ultraviolet lamp 4, The air purification effect of the hood 100 is better.

Further, as shown in FIG. 3 , the wind wheel assembly 2 includes a wind wheel 21 and a motor 22 that drives the wind wheel 21 to rotate. At least a part of the upper air channel plate 71 forms a downwardly protruding arc structure, and the arc structure The lowest point is lower than the highest point of the wind wheel 21 . As a result, the air flow comes out from the wind wheel 21 and flows to the air outlet 103 against the wall surface of the upper air duct plate 71 , so that the air diversion effect is better.

Referring to Fig. 2-Fig. 3, the lower air channel plate 72 forms an arc structure to guide the air flow from the wind wheel 21 to the air outlet 103, and the air diversion effect is good.

In one embodiment of the present invention, as shown in Fig. 2-Fig. 3, the hood 100 also includes a lighting assembly 5. By setting the lighting assembly 5, it not only has the function of removing oily smoke and purifying the air, but also has the function of lighting Integrating the range hood 100 and the indoor lighting into one, the range hood 100 can be used as a general indoor lighting, so that there is no need to separately install lighting in the room.

Further, as shown in FIGS. 2-3 , the air inlet 102 is arranged on the side of the housing 1, and the air outlet 103 is arranged above the air inlet 102 (for example, it can be arranged on the top of the housing 1), and the lighting assembly 5 is arranged at the bottom of the housing 1, so that the size and installation position of the lighting assembly 5 are not restricted by the air inlet 102 and the air outlet 103, and the installation of the lighting assembly 5 is flexible. At the same time, it can avoid the problem of shadows under the range hood 100 due to the high installation height and large volume of the range hood 100 and affecting the line of sight.

In one embodiment of the present invention, as shown in FIGS. 2-3 , the hood 100 is provided with an installation cover assembly, and an installation cavity 601 is defined inside the installation cover assembly, and the lighting assembly 5 is disposed in the installation cavity 601 . By arranging the lighting assembly 5 in the installation cover assembly, oil droplets, dust or water droplets in the air can be prevented from adhering to the lighting assembly 5 and affecting the lighting effect of the lighting assembly 5 and damaging the lighting assembly 5 .

Further, as shown in FIGS. 2-3 , at least a part of the installation cover assembly extends into the filter chamber 101 and this part is configured: the air filtered by the filter screen assembly 3 is guided towards the wind wheel assembly 2, and then Driven by the wind wheel assembly 2, it is discharged to the air outlet 103. This not only makes the overall structure of the range hood 100 more compact, which is conducive to the miniaturization of the range hood 100, but also the installation of the cover assembly has a guiding effect on the air in the filter cavity 101, thereby speeding up the air purification efficiency of the range range 100. .

Further, referring to FIGS. 2-3 , the air inlet 102 is formed as an annular structure extending circumferentially along the casing 1, the filter screen assembly 3 is formed as an annular structure opposite to the air inlet 102, and at least a part of the cover assembly is installed Located in the filter screen assembly 3 and opposite to the wind wheel assembly 2, the part of the installation cover assembly located in the filter screen assembly 3 forms an arc shape protruding towards the wind wheel assembly 2, and the air filtered by the filter screen assembly 3 is installed Guided by the arc-shaped outer wall surface of the cover assembly, the flow moves toward the wind wheel assembly 2 . The layout of the smoke machine 100 inside the smoke machine 100 is reasonable and compact, the structure of the installation cover assembly is simple, and the flow diversion effect is good.

The following describes an internal circulation range hood 100 according to a specific embodiment of the present invention with reference to FIGS. 1-6 .

Referring to Figures 1-6, a smoke machine 100 according to a specific embodiment of the present invention includes: a casing 1, a wind wheel assembly 2, a filter assembly 3, an ultraviolet lamp 4, a lighting assembly 5, an installation cover assembly and a guide stream components.

Wherein, the housing 1 includes an upper housing assembly 11 and a lower housing assembly 12, the upper housing assembly 11 includes an upper casing 111 with an open bottom, an annular central bracket and an annular air intake grille 112, and the lower housing assembly 12 It includes an annular lower case 121 and an annular decorative plate 122 arranged at the center of the bottom of the lower case 121 , and the decorative plate 122 is provided with grill bars. The upper casing 111 is spaced above the lower casing 121, and an annular air inlet 102 is defined between the upper casing 111 and the lower casing 121, and the air outlet 103 is also formed in a ring structure, and the air outlet 103 is located at the air inlet 102. above, and the air outlet 103 is formed on the upper cover 111, the air outlet 103 can also be provided with an outlet grille, the air inlet grille 112 is located at the air inlet 102 and covers the air inlet 102, and the air inlet grille 112 is set Between the upper case 111 and the lower case 121 , the upper case 111 , the air intake grill 112 and the lower case 121 jointly define the filter chamber 101 , and the central bracket is arranged between the upper case 111 and the air intake grill 112 between.

The wind wheel assembly 2 includes a wind wheel 21 and a motor 22, the wind wheel 21 is arranged in the filter chamber 101, the motor 22 is connected with the wind wheel 21 to drive the wind wheel 21 to rotate, the wind wheel 21 rotates to form a negative pressure draft, and the driving air is driven by the inlet The air outlet 102 flows to the air outlet 103 . The rotation axis of the wind wheel 21 extends vertically, and the wind wheel 21 is a centrifugal wind wheel 21 . The wind wheel assembly 2 is disposed in the upper casing 111 and adjacent to the air outlet 103 .

The filter screen assembly 3 is arranged in the filter cavity 101 and between the wind wheel assembly 2 and the air intake grille 112 , and the filter screen assembly 3 is formed into an annular structure opposite to the air intake port 102 . The filter screen assembly 3 includes the above-mentioned first filter element 31 and second filter element 32 .

The installation cover assembly includes an upper installation cover 61 and a lower installation cover 62. The upper installation cover 61 is fixed in the filter cavity 101 and is located in the filter screen assembly 3. The lower installation cover 62 is located below the upper installation cover 61 and is connected to the upper installation cover 61. Together define an installation cavity 601, the lighting assembly 5 is arranged in the installation cavity 601, the lower installation cover 62 is arranged at the center of the ring-shaped decorative plate 122 and at least part of it protrudes downwards from the filter cavity 101, and the lower installation cover 62 is formed as a lampshade. The upper mounting cover 61 is located below the wind wheel assembly 2, and is formed in a curved shape protruding toward the wind wheel assembly 2 to guide the air filtered by the filter screen assembly 3 towards the direction of the wind wheel assembly 2, and can also play a role. To achieve a certain rectification (avoid eddy current) effect, the lower mounting cover 62 is formed into a downwardly protruding arc shape.

The upper air channel plate 71 and the lower air channel plate 72 of the air guide assembly define a guide air channel 701 between the upper air channel plate 71 and the lower air channel plate 72, and the guide air channel 701 includes an inlet and an air outlet arranged toward the wind wheel assembly 2 103 connected to the outlet, the cross-sectional area of the diversion air channel 701 decreases in the direction from the inlet to the outlet, and the diversion effect is good. At least a part of the upper air channel plate 71 forms a downwardly protruding arcuate structure, and the lowest point of the arcuate structure is lower than the highest point of the wind wheel 21, so that the airflow comes out of the wind wheel 21 and sticks to the upper air channel plate 71. The wall surface flows to the air outlet 103 to form a diversion effect. The lower air channel plate 72 forms an arc structure to guide the airflow from the wind wheel 21 to the air outlet 103 .

Ultraviolet lamps 4 are provided in the filter chamber 101 adjacent to the air inlet 102 and adjacent to the air outlet 103 , and the ultraviolet lamps 4 adjacent to the air outlet 103 are arranged in the guide air duct 701 .

The air purification process of the hood 100 in the above embodiment is as follows (wherein the airflow direction is shown in FIG. 3 ):

The smoke machine 100 is hoisted on the ceiling by the hoisting piece 104. The wind wheel assembly 2 works to form a negative pressure draft, and the smoke flows towards the smoke machine 100. During the upward flow of the smoke, the lower installation cover 62 forms a downward protruding Arc-shaped, after the smoke reaches the bottom of the hood 100 from bottom to top, it diffuses along the arc surface of the lower installation cover 62 to the decorative panel 122, and after being initially filtered by the grille strips on the decorative panel 122, it The arc-shaped outer surface of the lower casing 121 rises around the side of the range hood 100, and then is drawn into the filter chamber 101 from the air inlet 102 on the side of the range hood 100, and when the smoke flows through the inlet 102, the smoke will After the secondary filtration of the air intake grille 112.

The flue gas enters the filter chamber 101 after being filtered by the air inlet grille 112, and in the filter chamber 101, it is first sterilized and purified by the ultraviolet lamp 4 adjacent to the air inlet 102, and then filtered and purified by the filter screen assembly 3 to enter the filter screen The inside of the assembly 3 then enters the wind wheel assembly 2 under the guidance of the arc-shaped outer surface of the upper mounting cover 61, and then the air coming out of the wind wheel assembly 2 flows to the air outlet 103 under the guidance of the air guide duct 701 and Return to the indoor environment through the air outlet 103. And when the air flows through the guide air duct 701 , the ultraviolet lamp 4 near the air outlet 103 sterilizes and purifies the air again.

From the above, the hood 100 according to the embodiment of the present invention adopts a variety of purification composite methods, which can not only remove oil fume, water vapor and harmful substances in the air, but also remove PM particles and formaldehyde in the air, and also have the functions of sterilization and odor removal. , The function of preventing the growth of bacteria, and its air purification effect is good. In addition, the range hood 100 of the present application is hoisted on the installation base (such as the ceiling) through the hoisting piece 104 , which is convenient for users to use and does not take up space.

Both the air inlet 102 and the air outlet 103 are formed into a ring structure arranged around the casing 1 of the cigarette machine 100, and the air inlet 102 is arranged on the side wall of the casing 1, and the air outlet 103 is arranged above the air inlet 102, thereby improving the The air purification efficiency of the hood 100.

By arranging the lighting assembly 5, it not only has the functions of removing oil fume and purifying the air, but also has the lighting function, and integrates the range hood 100 and the indoor lamp, and the range hood 100 can be used as a general indoor lighting lamp, so that There is no need to install lighting fixtures separately indoors, and at the same time, it can avoid the problem of affecting the line of sight caused by shadows under the range hood 100 due to the high installation height and large volume of the range range ranger 100 . In addition, the lighting assembly 5 can be installed flexibly without being affected by the air inlet 102 and the air outlet 103 .

In addition, during the working process of the above-mentioned hood 100, the flue gas is filtered by the filter screen assembly 3 after being filtered twice by the grille, thereby reducing the load on the filter screen assembly 3, prolonging the service life of the filter screen assembly 3, reducing Frequency of filter screen assembly 3 replacement and cleaning.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", "circumferential" etc. are based on The orientation or positional relationship shown in the drawings is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as Limitations on the Invention.

In the description of the present invention, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features.

In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connection, or integral connection; it may be mechanical connection or electrical connection; it may be direct connection or indirect connection through an intermediary, and it may be the internal communication of two elements or the interaction relationship between two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the description of the present invention, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, and may also include the first and second features. The second features are not in direct contact but through another feature between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Below", "beneath" and "under" the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

In the description of this specification, references to the terms "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific examples," or "some examples" are intended to mean that the implementation A specific feature, structure, material, or characteristic described by an embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the invention is defined by the claims and their equivalents.

Claims (13)

1. An internal circulation range hood, characterized in that it comprises: A housing, the housing defines a filter cavity, and the filter cavity has an air inlet and an air outlet communicating with the indoor environment; a wind wheel assembly, the wind wheel assembly is rotatably arranged in the filter cavity to drive air to flow from the air inlet toward the air outlet; A filter screen assembly, the filter screen assembly is arranged in the filter cavity, the filter screen assembly includes a first filter element and a second filter element, the air entering the filter cavity passes through the first filter element and the second filter element in sequence After being filtered by the second filter element, it is discharged through the air outlet, wherein the first filter element is used to filter the soot and water vapor in the air, and the second filter element is used to filter PM particles and/or formaldehyde in the air . 2. The internal circulation range hood according to claim 1, wherein the first filter element is a metal filter or a PP filter. 3. The internal circulation range hood according to claim 1, wherein the second filter is an activated carbon filter or a HEPA filter. 4. The internal circulation range hood according to claim 1, characterized in that, the air inlet and/or the air outlet are formed as a ring structure extending along the circumference of the housing, and when the air inlet When the tuyere is formed as an annular structure extending circumferentially around the housing, both the first filter element and the second filter element are formed as an annular structure opposite to the air inlet, and the second filter element is located at Inside the first filter element. 5 . The internal circulation range hood according to claim 1 , wherein the filter screen assembly is detachably arranged in the filter chamber. 6 . 6. The internal circulation range hood according to claim 1, wherein the first filter element is detachably connected to the second filter element. 7. The internal circulation type range hood according to any one of claims 1-6, characterized in that an ultraviolet lamp is also provided in the filter cavity. 8. The internal circulation range hood according to claim 7, wherein the ultraviolet lamp is arranged adjacent to the air inlet, and the ultraviolet lamp comprises a lamp board and ultraviolet lamp beads arranged on the lamp board , the ultraviolet lamp bead is arranged toward the air inlet. 9. The internal circulation range hood according to claim 7, wherein the ultraviolet lamp is arranged adjacent to the air outlet, and the ultraviolet lamp comprises a lamp board and ultraviolet lamp beads arranged on the lamp board , the ultraviolet lamp bead is arranged toward the air outlet. 10. The internal circulation range hood according to claim 7, wherein the ultraviolet lamp is a UVC-LED lamp. 11. The internal circulation range hood according to claim 1, characterized in that, a guide assembly is provided between the wind wheel assembly and the air outlet to direct the air filtered by the filter assembly toward The air outlet guides. 12. The internal circulation range hood according to claim 11, characterized in that, the air guiding assembly comprises an upper air channel plate and a lower air channel plate oppositely arranged in the vertical direction, the upper air channel plate and the lower air channel A guide air channel is defined between the plates, and the guide air channel includes an inlet arranged toward the wind wheel assembly and an outlet connected to the air outlet, and the cross-sectional area of the guide air channel is determined by the inlet decreases towards the outlet. 13. The internal circulation range hood according to claim 12, wherein the wind wheel assembly includes a wind wheel and a motor driving the wind wheel to rotate, at least a part of the upper air channel plate forms a downward convex The curved surface structure, and the lowest point of the curved surface structure is lower than the highest point of the wind wheel.