CN112432214B

CN112432214B - Purifier and range hood

Info

Publication number: CN112432214B
Application number: CN202011364085.3A
Authority: CN
Inventors: 李佳阳
Original assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Current assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2024-03-19
Anticipated expiration: 2040-11-27
Also published as: CN112432214A

Abstract

The invention provides a purifying device and a range hood, and relates to the technical field of kitchen appliances. The purification device comprises: the first shell is provided with an air inlet; the second shell is connected with the first shell to form an air outlet; the filter piece is filled in the air outlet to form a containing cavity which is enclosed with the first shell and the second shell, and the containing cavity is communicated with the air inlet; wherein the second shell is detachably connected with the first shell, so that the filter element is detachable. The purifying device and the range hood provided by the invention can control noise and save replacement cost.

Description

Purifier and range hood

Technical Field

The invention belongs to the technical field of kitchen appliances, and particularly relates to a purifying device and a range hood.

Background

The fume exhauster is one kitchen appliance for purifying kitchen environment, and can pump away fume, steam and other waste matter produced during cooking. The range hood comprises a fume collecting hood, a flue and a purifying device. The exhaust gas is sucked into the flue by the fume collecting hood and filtered and purified by the purifying device. Wherein, purifier includes the filter element, and the filter element is the core component that can play the filtration absorption to waste gas thing. The internal circulation type range hood adopts an indoor discharge mode, and after the oil smoke is sucked into the range hood, the oil smoke is filtered and purified and then discharged back into the room. Because the gas of the internal circulation type range hood circulates indoors, the filtering and absorbing capacity of the filtering piece in the purifying device is highly required.

In the related art, purification apparatuses using activated carbon as a filter are classified into a front purification apparatus and a rear purification apparatus. For the front-end purification device, because the water vapor in the oil smoke greatly affects the performance of the activated carbon, a water absorption structure is often required to be added to dehydrate the oil smoke, so that the noise is increased due to the increase of the air inlet resistance. For the post-purification device, the related purification device adopts an integral part and is bulky to reduce resistance to air flow, so that a bulky structure needs to be replaced when the purification device is replaced, resulting in higher cost.

Disclosure of Invention

In view of the above, the present invention provides a purifying device and a range hood to solve the technical problem of reducing the replacement cost while controlling the noise of the purifying device.

The technical scheme of the invention is realized as follows:

an embodiment of the present invention provides a purification apparatus including: the first shell is provided with an air inlet; the second shell is connected with the first shell to form an air outlet; the filter piece fills the air outlet to form a containing cavity with the first shell and the second shell, and the containing cavity is communicated with the air inlet; wherein the second shell is detachably connected with the first shell, so that the filter element is detachable.

Further, one end of the first shell is provided with the air inlet, and the other end of the first shell opposite to the one end is adjacent to the second shell and is detachably connected with the second shell; the air outlet is adjacent to the second shell.

Further, the first housing includes: the top wall is arranged at one end of the first shell and surrounds the air inlet; two side walls arranged at intervals, each side wall being connected to the top wall and extending to the other end of the first housing; the second shell is a frame-shaped component connected end to end; a first end of the second shell is detachably connected with the other ends of the two side walls, and a first opening is formed between the first end and the side walls; a second opening is arranged at a second end of the second shell opposite to the first end; wherein, at least part of the first opening and the second opening is opened to form the air outlet.

Further, the first housing and the second housing are connected in a substantially rectangular body structure, the first opening has two and is respectively disposed at two opposite sides of the rectangular body, and the second opening is disposed between the two opposite sides.

Further, the second housing includes two first end walls disposed opposite each other and a second end wall disposed between the two first end walls, the second end wall having two and being disposed opposite each other; the first end wall and the second end wall enclose the second opening; the side wall of the first shell is clamped with the first end wall of the second shell so as to detachably connect the first shell and the second shell; the second end wall and the side wall enclose the first opening.

Further, a first groove communicated with the other end is formed in the outer surface of the side wall of the first shell, and a first protrusion is arranged at the first end of the second shell in a protruding mode; or, the side wall of the first shell is provided with a first bulge connected with the other end, and the outer surface of the second shell is provided with a first groove communicated with the first end; the first protrusion is clamped with the first groove.

Further, the other ends of the side walls of the first shell are all protruded to form protruding blocks, and the free ends of the protruding blocks extend to the direction close to the accommodating cavity to form positioning blocks; the first end of the second shell forms a positioning groove; wherein, the lug is abutted with the positioning groove.

Further, the inner wall surface of the side wall, which is close to the first opening, is provided with a second groove; the filter is insertable into the second recess to fill the first opening.

Further, reinforcing ribs are arranged in the second grooves.

Further, the purification device further comprises a filter screen located in the accommodating cavity, and the filter screen is arranged around the air inlet.

Further, the filter screen includes: one end of the first filter screen surrounds the air inlet and is fixedly connected with the top wall; the second filter screen is fixedly connected to the other end of the first filter screen so as to form a filter space with the first filter screen, and the second filter screen is provided with a through hole; the dirt collecting box is connected to the outer surface of the second filter screen and is communicated with the through hole.

Further, the purification device further comprises a guide vane positioned in the accommodating cavity, and the guide vane is connected to the outer surface of the first filter screen.

The invention also provides a range hood, which comprises the purifying device of any one of the above.

The purifying device comprises a first shell, a second shell and a filtering piece, wherein the second shell is detachably connected with the first shell, so that the filtering piece is detachable. According to the embodiment of the invention, the shells are connected in a detachable mode, the filter element can be taken out only by detaching one of the shells, and the filter element of the purification device can be replaced conveniently without changing the whole volume and structure of the purification device, so that the whole purification device is not required to be replaced, and the replacement cost is effectively saved while the noise is controlled.

Drawings

Fig. 1 is a schematic diagram of the working principle of a related internal circulation type range hood;

FIG. 2 is an exploded view of a purification device according to an embodiment of the present invention;

FIG. 3 is an assembly view of a purification device according to an embodiment of the present invention at one viewing angle;

fig. 4 is a schematic perspective view of a first housing of a purifying apparatus according to an embodiment of the present invention;

FIG. 5a is a schematic perspective view of another first housing;

FIG. 5b is a schematic perspective view of another first housing;

FIG. 5c is a schematic perspective view of another first housing;

FIG. 6 is an assembly view of a purification device according to an embodiment of the present invention at another view angle;

FIG. 7 is a schematic perspective view of a second housing of the purification apparatus according to the embodiment of the present invention;

fig. 8 is a schematic perspective view of a first housing of a purifying apparatus according to an embodiment of the present invention at another view angle;

FIG. 9 is an enlarged partial schematic view of FIG. 8 at A;

fig. 10 is a schematic perspective view of a first housing and a filter screen according to an embodiment of the present invention;

fig. 11 is a schematic perspective view of a filter screen according to an embodiment of the present invention;

fig. 12 is a schematic cross-sectional view of a purification apparatus according to an embodiment of the present invention.

Reference numerals illustrate:

1-range hood, 10-fume collecting hood, 20-upstream fume pipe, 30-purification device, 30A-air outlet, 30B-first opening, 30C-second opening, 30D-reinforcing rib, 31-first housing, 311-air inlet, 312-top wall, 313-side wall, 313A-first groove, 313B-projection, 313C-positioning block, 313D-slot, 313E-second groove, 32-second housing, 321-first end wall, 321A-first projection, 321B-positioning groove, 321C-bolt, 322-second end wall, 33-filter, 34-upstream fume pipe, 35-filter, 351-first filter, 352-second filter, 3521-through hole, 353-fume collecting box, 36-deflector, 40-exhaust duct

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

The individual features described in the specific embodiments can be combined in any suitable manner, without contradiction, for example by combination of different specific features, to form different embodiments and solutions. Various combinations of the specific features of the invention are not described in detail in order to avoid unnecessary repetition.

In the following description, references to the term "first/second/are merely to distinguish between different objects and do not indicate that the objects have the same or a relationship therebetween. It will be understood that references to orientations are intended to refer to orientations in normal use.

It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. The term "coupled," unless specifically indicated otherwise, includes both direct and indirect coupling.

The invention provides a purifying device which has the function of filtering and purifying oil smoke, air or other gases and can be applied to equipment such as a range hood or a gas purifier. It should be noted that the application scenario of the present invention is not limited to the purification apparatus of the present invention.

The following is an example of the operation principle of the range hood, taking the application of the purification device to the range hood as an example. The range hood may be classified into an external exhaust type and an internal exhaust type. The external exhaust type range hood filters and purifies the oil smoke gas pumped away and discharges the oil smoke gas to the external environment. The internal-exhaust type range hood is used for filtering and purifying the oil smoke gas which is pumped out and then exhausting the oil smoke gas back to the room through a circulating channel, and is also called as an internal-circulating type range hood, and is suitable for places without a public flue or incapable of exhausting the oil smoke. Therefore, compared with the external exhaust type, the internal exhaust type range hood has higher purifying capacity and requirements on the range hood so as to ensure that the indoor air environment is not polluted by oil smoke. The purification device in the internal exhaust type range hood can be divided into a front purification device and a rear purification device according to the self position, the front purification device and the rear purification device are defined according to the direction from the oil smoke inlet to the oil smoke outlet, the front purification device is relatively close to the oil smoke inlet and is positioned at the front part of the flue, and the corresponding rear purification device is relatively far away from the oil smoke inlet and is positioned at the rear part of the flue. The working principle of the internal exhaust type range hood with a rear purification device will be described approximately below.

As shown in fig. 1, the related range hood 1 includes a hood 10, an upstream smoke pipe 20, a purification device 30, and an exhaust duct 40. The fume collecting hood 10 is arranged above a cooking range, after the power supply of the fume collecting hood 1 is connected, an impeller in a volute is driven to rotate by a motor in a machine body, a negative pressure area is formed above the cooking range within a certain range, so that the fume collecting hood 10 can suck fume and/or water vapor and the like generated in the cooking process into a flue, most of greasy dirt particles are filtered and separated through a first filtering device arranged in the flue, the rest of gas enters a centrifugal fan system, the fume is thrown out of the impeller under the action of centrifugal force through the high-speed rotation of the impeller of the fan, the fume is separated again, the separated oil flows into an oil cup through an oil guiding system, the separated fume enters a purifying device 30 along an upstream fume pipe 20 for filtering and purifying treatment again, and harmful substances in the fume are further filtered, so that the emission standard is reached, and the purified clean gas is directly discharged to the indoor environment through an exhaust pipeline 40. The purifying device 30 is one of the core components of the range hood 1, plays a vital role in filtering and purifying the gas discharged to the indoor environment, and needs to ensure the filtering and adsorbing capacity of the filtering element in the purifying device 30 to ensure the purifying effect of the smoke.

In the embodiment of the present invention, as shown in fig. 2 and 3, the purifying device 30 includes a first housing 31, a second housing 32, and a filter 33. The first housing 31 has an air inlet 311. Specifically, the first housing 31 may be a thin-walled member, and has any structure and shape, the first housing 31 is provided with an air inlet 311 in communication with the channel of the upstream flue pipe 34, and the air inlet 311 is connected with the upstream flue pipe 34 to allow the oil smoke from the upstream flue pipe 34 to enter. The air inlet 311 may have any shape, and may be a substantially rectangular air inlet, a substantially circular arc air inlet, or a shaped air inlet. The area of the air inlets 311 may be set according to the power of the range hood 1 and the amount of the oil smoke, and the number of the air inlets 311 may also be set according to actual needs, and in an exemplary embodiment, one air inlet 311 is used to continue the following description.

As shown in fig. 3, the second housing 32 is connected to the first housing 31 to form the air outlet 30A, and the second housing 32 is detachably connected to the first housing 31. Specifically, the second housing 32 may be a thin-walled member, and its structure and shape may be arbitrary. The second housing 32 is assembled with the first housing 31 to form a housing of the purifying device 30, which not only protects other components inside the purifying device 30, but also forms an air flow passage through which the oil smoke gas passes. The second housing 32 and the first housing 31 may be connected by a fastener, mortise and tenon, glued or electrically connected, or the like.

Through the assembly of the second casing 32 and the first casing 31, a part of the outer edge of the second casing 32 is connected with a part of the outer edge of the first casing 31, another part of the outer edge of the second casing 32 and another part of the outer edge of the first casing 31 form an air outlet 30A, and the oil fume is guided to the air outlet 30A through a flow channel, and the air outlet 30A is used for discharging the clean gas after filtration and purification. The number of the air outlets 30A may be any, and may be one or a plurality, and specifically may be set according to actual needs, and the shape or the size of each air outlet 30A may be the same or different for a plurality of air outlets 30A. The air outlet 30A may have any shape, and may be substantially rectangular, circular arc, or irregular. The size of the air outlet 30A may be determined according to the actual air output.

As shown in fig. 3, the filter 33 fills the air outlet 30A to form a receiving chamber with the first and second cases 31 and 32, and the receiving chamber communicates with the air inlet 311. The filling indicates that the filter 33 is disposed entirely in the area of the tuyere 30A. The filter 33 is a member that can filter, absorb, and purify gases such as oil smoke and water vapor. Specifically, the filter element 33 may be activated carbon or a high-efficiency air filter, and of course, the filter element may also be other filter devices capable of filtering oil smoke gas impurities to achieve the effect of purifying air. In the exemplary embodiment, filter element 33 is activated carbon. The structural shape and the size of the filter element 33 can be set with reference to the structural shape and the size of the air outlet 30A, so that the utilization rate of the filter element 33 can be effectively improved, and the assembly difficulty between all the components can be simplified. For example, for the air outlet 30A with a substantially rectangular shape, the filter element 33 may be a substantially rectangular body, and the cross-sectional area of the filter element 33 may be slightly larger than the area of the air outlet 30A, so that the filter element 33 may better cover the whole air outlet 30A, and gaps between the filter element 33 and the edges of the air outlet 30A are effectively avoided, thereby effectively reducing the direct escape of unfiltered and purified oil smoke gas from the gaps and polluting indoor air. For the purification apparatus 30 having a plurality of air outlets 30A, each air outlet 30A is filled with a filter 33. The filter 33 fills the air outlet 30A and encloses a cavity, i.e. the receiving cavity, with the first housing 31 and the second housing 32. The accommodating cavity is communicated with the air inlet 311, so that the air flowing into the air inlet 311 can enter the accommodating cavity, and the accommodating cavity provides a flowing space for the flowing of the air. By providing the filter 33 at the air outlet 30A of the purification apparatus 30, the gas such as oil smoke, water vapor, etc. is filtered, absorbed, purified, and then discharged to the indoor environment through the filter 33.

The filter element 33 is removable. Specifically, as shown in fig. 2, the connection between the first housing 31 and the second housing 32 is detachable, and when the user needs to replace the filter element 33, the first housing 31 and the second housing 32 can be detached, so that the filter element 33 that needs to be replaced is taken out, a new filter element 33 is placed, and then the first housing 31 and the second housing 32 are reassembled.

In some embodiments, as shown in fig. 3, one end of the first housing 31 has an air inlet 311, and the other end of the first housing 31 opposite to the one end is adjacent to and detachably connected with the second housing 32. Specifically, the first housing 31 has opposite ends, one of which is the air inlet 311 (the upper end shown in fig. 3) of the purification apparatus 30, and the other end (the lower end shown in fig. 3) of the first housing 31 is detachably connected to the second housing 32, that is, the second housing 32 is located at one end of the first housing 31 and forms an assembly with the first housing 31. The detachable end is provided with one end of the first shell 31, so that the integrity of the first shell 31 can be kept in a detached state, and the detachable end is opposite to one end where the air inlet 311 is located, thereby better dividing the functional area of the first shell 31 and improving the convenience of use.

As shown in fig. 3, the air outlet 30A is adjacent to the second housing 32. Specifically, when the second housing 32 is described as forming at least a portion of the side wall of the air outlet 30A, the air outlet 30A is formed in a state that the side wall is opened or the air outlet 30A is limited only by the second housing 32 in a state that the second housing 32 is separated from the first housing 31 by separating the connection between the second housing 32 and the first housing 31, so that the filter 33 mounted on the air outlet 30A can be removed and replaced conveniently.

The detachable end of the purification device is arranged at the end opposite to the air inlet, so that the convenience of use is improved; and the air outlet is arranged adjacent to the second shell, so that the air outlet can be opened by disassembling the second shell, and the filter element can be conveniently disassembled and installed.

In some embodiments, as shown in fig. 4, the first housing 31 includes a top wall 312 and two spaced apart side walls 313. The top wall 312 is disposed at one end of the first housing 31 and encloses the air inlet 311. Specifically, the top wall 312 may be a circumferentially continuous frame member surrounding the air inlet 311 as a wall surface defining the air inlet 311. The dimensions of the top wall 312 in the length direction and the width direction of the air inlet 311 may be the same as those of the side wall 313 in the length direction and the width direction of the air inlet 311, or the dimensions of the top wall 312 in the length direction of the air inlet 311 may be smaller than those of the side wall 313 in the length direction of the air inlet 311, that is, the frame-shaped top wall 311 forms a neck portion for connecting the upstream flue pipe 34, and the neck portion forms an inlet channel for gas, that is, the air inlet 311. The top wall 312 may be substantially rectangular, circular, or any other shape, as desired.

As shown in fig. 4, two side walls 313 are provided at intervals, each side wall 313 being connected to the top wall 312 and extending to the other end of the first housing 31. Specifically, the structures and shapes of the two side walls 313 may be substantially the same, the two side walls 313 may be substantially planar, may be substantially curved as shown in fig. 5a, or may be substantially planar, and may be substantially curved, and the specific structure of the side walls 313 may be determined according to the actual space requirement. In the exemplary embodiment, the two side walls 313 each have a substantially planar shape, and each side wall 313 may have any shape, for example, a substantially rectangular shape as shown in fig. 4, a polygonal shape as shown in fig. 5b, or a circular shape as shown in fig. 5 c. The two side walls 313 may be spaced apart a distance substantially the same as the width of the top wall 312. One end of each sidewall 313 is fixedly connected or integrally formed with the outer edge of the top wall 312 and extends from one end to the opposite end to form the sidewall 313. The extending direction of the side wall 313 is substantially perpendicular to the outer wall surface of the top wall 312.

As shown in fig. 2 and 3, the second housing 32 is a frame-shaped member connected end to end, a first end of the second housing 32 is detachably connected to the other ends of the two side walls 313, the first end and the side walls 313 form a first opening 30B, and a second end of the second housing 32 opposite to the first end is provided with a second opening 30C. Specifically, the shape of the second housing 32 may be varied, and the second housing 32 may be a frame-shaped member having a substantially rectangular shape, or may be a frame-shaped member having a substantially circular shape, and may be set according to the specific structural shape of the first housing 31. The second housing 32 also has opposite ends, one of which is coupled to one end of the two side walls 313 of the first housing 31 remote from the air inlet 311, and the outer edge of one end of the second housing 32 forms a first opening 30B communicating with the receiving chamber with the outer edges of the two side walls 313 and the outer edge of the top wall 312. The number of the first openings 30B is two, and they are respectively located on the left and right sides of the first housing 31 as shown in fig. 3. As shown in fig. 2, the other end of the second housing 32 has a second opening 30C communicating with the accommodation chamber.

At least a part of the first opening 30B and the second opening 30C is opened to form an air outlet 30A. The open means that the opening communicates the accommodating chamber with the external environment. Specifically, the first opening 30B and the second opening 30C may be all opened as the air outlet 30A of the purification apparatus 30, so that the purification apparatus 30 forms three-side air outlet; the second opening 30C may be closed, and only the first opening 30B may be opened as the air outlet 30A of the purifying device 30, so that the purifying device 30 forms double-sided air outlet; the first opening 30B may be closed, and only the second opening 30C may be opened as the air outlet 30A of the purification apparatus 30, so that the purification apparatus 30 may form a single-side air outlet. The specific closing manner of the opening may be that the plugging plate is fixedly connected with the first housing 31 or the plugging plate is integrally formed with the first housing 31, and of course, other manners capable of closing the opening may also be used. The specific air outlet mode can be set according to actual needs. Therefore, the number of the air outlets 30A and the positions of the air outlets 30A can be flexibly adjusted, different installation environments are adapted, and different installation requirements of users are met.

The first opening and the second opening are formed by arranging the first shell into a specific structure form of two side walls which are arranged at intervals and forming the first opening and the second opening with the second shell. The first opening and the second opening can be closed or opened to flexibly adjust the air outlet form of the purification device, so that three-side, double-side or single-side air outlet is formed.

In some embodiments, as shown in fig. 6, the first housing 31 and the second housing 32 are connected in a substantially rectangular body structure. By substantially rectangular body, it is meant that the assembly formed by the first housing 31 and the second housing 32 is rectangular or approximately rectangular. Specifically, the side wall 313 of the first housing 31 may be a substantially rectangular thin plate, and the second housing 32 may be a frame member having a substantially rectangular shape, so that the first housing 31 and the second housing 32 may be assembled to form a substantially rectangular body structure. And the side wall 313 of the housing of the purification device 30 can lean against the plane of the wall, so that the space occupation is small and the structure is compact.

As shown in fig. 6, the first opening 30B has two and is provided on opposite sides of the rectangular parallelepiped, respectively, and the second opening 30C is provided between the opposite sides. Specifically, the first openings 30B are located at two sides of the first housing 31 in the length direction, and there is one first opening 30B at each side. The second opening 30C is located between the two first openings 30B. The opening and closing of the first opening 30B and the second opening 30C may be determined according to the user's demand for the air-out, so that the purification apparatus 30 is formulated as three-side air-out in a left-right lower form or two-side air-out in a left-right form or one-side air-out in a bottom form. In the use state, all three air-out forms are discharged from the periphery side of the purification device 30 to the indoor environment, and the air-out forms are not discharged from the front, so that poor body feeling caused by air-out from the front can be effectively reduced.

By arranging the assembled bodies of the first shell and the second shell into a structure which is basically rectangular, the purifying device with the rectangular structure can improve the application range and the application environment of the purifying device.

In some embodiments, as shown in fig. 7, the second housing 32 includes two first end walls 321 disposed opposite each other and a second end wall 322 disposed between the two first end walls 321, the second end wall 322 having two and being disposed opposite each other. Specifically, the two first end walls 321 are each substantially identical in structure and shape and are disposed at a relative interval in the same direction and distance as the two side walls 313 of the first housing 31. The two second end walls 322 are located between the two first end walls 321 and are respectively and correspondingly arranged at two ends of the extending direction of the first end walls 321, the first end walls 321 and the second end walls 322 are fixedly connected or integrally formed, and the extending direction of the second end walls 322 is approximately perpendicular to the extending direction of the first end walls 321, so that the two first end walls 321 and the two second end walls 322 can be enclosed to form a frame-shaped component with approximately rectangular shape.

As shown in fig. 7, the first end wall 321 and the second end wall 322 enclose the second opening 30C. Specifically, the outer edges of the two first end walls 321 and the two second end walls 322 are connected end to form the second opening 30C. The enclosed space may be used for placement of the filter element 33.

As shown in fig. 6, the side wall 313 of the first housing 31 is engaged with the first end wall 321 of the second housing 32 to detachably connect the first housing 31 and the second housing 32. Specifically, the first end wall 321 and the side wall 313 are connected in a flat transition manner by the first end wall 321 and the side wall 313, so that the first housing 31 and the second housing 32 are formed as a whole. The second end wall 322 and the side wall 313 enclose the first opening 30B. Specifically, the outer edge of the second end wall 322 forms the first opening 30B with the outer edge of the side wall 313 and the top wall 312.

As shown in fig. 6, the height of the first end wall 321 (the length in the up-down direction as shown in fig. 6) may be much smaller than the height of the side wall 313, so that the space occupied by the detached second housing 32 can be effectively reduced, and the handling operation of the user is also facilitated.

The second shell is detachably connected with the first shell through the specific structural forms of the first end wall and the second end wall, and the structure is simple and effective.

In some embodiments, as shown in fig. 7 and 8, the outer surface of the sidewall 313 of the first housing 31 is provided with a first groove 313A communicating with the other end, and the first end of the second housing 32 is provided with a first protrusion 321A protruding, and the first protrusion 321A is engaged with the first groove 313A. Specifically, as shown in fig. 7, the first end wall 321 of the second housing 32 is formed with a first protrusion 321A protruding near the outer edge of the first housing 31, and the shape and structure of the first protrusion 321A may be arbitrary, and the number of the first protrusions 321A may be one or plural. In an exemplary embodiment, the outer edge of each first end wall 321 is provided with two first protrusions 321A. As shown in fig. 8, the first recess 313A is provided near one end of the second housing 32, and the first recess 313A extends along the sidewall 313 near the outer edge of the second housing 32 to form an open end so that the first protrusion 321A can extend into the first recess 313A. The structure, shape and number of the first grooves 313A are approximately matched with those of the first protrusions 321A, so that the first housing 31 and the second housing 32 can be relatively accurately clamped to form an assembly as shown in fig. 6. Through holes may be prefabricated at corresponding positions of the first protrusion 321A and the first groove 313A, and then the first protrusion 321A is engaged with the first groove 313A by a fastener, thereby achieving detachable connection of the first housing 31 and the second housing 32.

Of course, in other embodiments, the first protrusion 321A may be disposed on the side wall 313 of the first housing 31, and the first end wall 321 of the second housing 32 may be disposed with the first recess 313A adapted thereto.

Through set up the concrete structural style of arch and recess on first casing and second casing, realize the detachable connection of first casing and second casing, simple structure easily realizes, also makes things convenient for user's dismouting simultaneously.

In some embodiments, as shown in fig. 9, the other ends of the side walls 313 of the first housing 31 each protrude to form a protrusion 313B, and the free ends of the protrusions 313B extend to a direction approaching the receiving cavity to form a positioning block 313C. Specifically, the outer edge of the side wall 313 near one end of the second housing 32 protrudes to form a protruding block 313B, and one end of the protruding block 313B near the second housing 32 extends to a direction near the accommodating cavity (downward direction as shown in fig. 9) to form a positioning block 313C, where the positioning block 313C can play a role in pressing and fixing the filter element 33. The first end of the second housing 32 forms a positioning groove 321B. Specifically, the first end wall 321 of the second housing 32 is recessed near the outer edge of the first housing to form a positioning groove 321B, and the positioning groove 321B is shaped and sized to substantially fit the protrusion 313B. The bump 313B abuts against the positioning groove 321B. The abutment means contact between the two, and there is no relative displacement. Specifically, the bump 313B can extend into the positioning groove 321B to form a tight connection, and the bump 313B abuts against the positioning groove 321B, so as to further enhance the reliability of the connection between the first housing 31 and the second housing 32.

As shown in fig. 9, an end of the bump 313B near the first opening 30B is provided with a slot 313D. As shown in fig. 7, the first end wall 321 is provided with a plug 321C near the inner wall surface of the positioning groove 321B. The latch 321C can be inserted into the slot 313D to further improve the tightness of the connection between the first housing 31 and the second housing 32.

Through set up the lug at the outer fringe of first casing, the outer fringe of second casing forms the constant head tank to through the butt of lug and constant head tank, further improve the reliability of first casing and second casing assembly connection.

In some embodiments, as shown in fig. 8, the sidewall 313 has a second groove 313E near the inner wall of the first opening 30B. Specifically, the second groove 313E is disposed at an end of the sidewall 313 near the first opening 30B, so that a larger space for flowing gas can be reserved. The second recess 313E may extend along the second opening 30C toward the air inlet 311. Alternatively, the second groove 313E may extend to the top wall 312 of the first housing 31. The width of the second groove 313E is substantially the same as the thickness of the filter 33. The filter 33 can be inserted into the second groove 313E to fill the first opening 30B. Specifically, the second groove 313E can position the filter element 33, so that the filter element 33 is stably connected with the first housing 31, and the risk of shaking or loosening the filter element 33 relative to the first housing 31 is effectively reduced. In the use process, the user can take down the second housing 32 first, then pull out the filter element 33 located in the second groove 313E along the second groove 313E, and complete the disassembly of the old filter element 33, and the process is simple and easy to operate. Through setting up the second recess at the internal face of first casing lateral wall, the filter is arranged in the second recess with the block mode, both can fix a position the filter, make things convenient for the dismouting of filter again.

In some embodiments, as shown in fig. 8, a stiffener 30D is disposed within the second groove 313E. Specifically, the specific structural form of the reinforcing rib 30D is arbitrary, the reinforcing rib 30D can strengthen the strength of the positioning surface of the second groove 313E, and can also improve the friction between the filter element 33 and the first housing 31, so that the installation state of the filter element 33 is more stable. Similarly, as shown in fig. 7, the inner wall surface of the second housing 32 may be provided with a reinforcing rib 30D to increase the strength of the second housing 32. Through setting up the strengthening rib at purifier's shells inner wall surface, effectively improve purifier's shell strength.

In some embodiments, as shown in fig. 10, the purifying device 30 further includes a filter screen 35 located in the accommodating chamber, and the filter screen 35 is disposed around the air inlet 311. Specifically, the filter screen 35 is disposed in the accommodating cavity and near the air inlet 311, so as to filter oil in the air, thereby effectively reducing contact between the grease and the filter element 33, and avoiding poor purifying effect. Through setting up the filter screen in purifier, the filter screen is accomplished the primary filtration to gaseous such as oil smoke, vapor, and the filter element is accomplished the secondary filtration purification to gaseous again, and multistage purification's mode can effectively promote purifying effect and extension filter element's life.

In some embodiments, as shown in fig. 11, filter 35 includes a first filter 351 and a second filter 352. One end of the first filter 351 surrounds the air inlet 311 and is fixedly connected with the top wall 312. Specifically, the specific structure of the first filter 351 may be determined according to the shape of the actual air inlet 311, for example, the first filter 351 may be formed by surrounding a substantially planar shape, or may be formed by surrounding a substantially cambered surface shape, and in an exemplary embodiment, the first filter 351 formed by surrounding a substantially planar shape is further described below. The first filter screen 351 has two inclined planes which are oppositely arranged, and in a use state, the inclined planes and the horizontal direction have a certain inclination angle, so that the whole first filter screen 351 is funnel-shaped. The inclined plane is the windward side of the first filter screen 351 and is also the main filtering surface of grease, and accumulated grease can continuously flow downwards and downstream along the inclined plane under the action of self gravity.

As shown in fig. 10, the second filter screen 352 is fixedly connected to the other end of the first filter screen 351 to form a filtering space with the first filter screen 351, and the second filter screen 352 is provided with a through hole 3521. Specifically, the second filter screen 352 is connected to one end of the first filter screen 351 far away from the air inlet 311, so that the first filter screen 351 and the second filter screen 352 enclose a filtering space, and the second filter screen 352 is provided with a through hole 3521 for discharging accumulated grease.

As shown in fig. 11, a dirt collection box 353 is attached to the outer surface of the second filter mesh 352 and communicates with the through-hole 3521. The outer surface means a surface outside the filtering space. Specifically, the dirt collection box 353 has a collection chamber open at one end for collecting grease dripping from the through-hole 3521. The area of the opening is larger than the area of the through hole 3521 so as to be able to fully receive all grease dropped from the through hole. The dirt collecting box 353 may be connected to the outer surface of the second filter mesh 352, or may be suspended below the through hole 3521.

The filter screen is arranged into the specific structural form of the first filter screen, the second filter screen and the dirt collecting box, so that the structure is simple.

In some embodiments, as shown in fig. 12, the purifying device 30 further includes a guide vane 36 disposed in the receiving cavity, and the guide vane 36 is connected to an outer surface of the first filter 351. The outer surface means a surface outside the filtering space. Specifically, the guide vane 36 is fixed on the outer surface of the first filter screen 351 to position the first filter screen, the guide vane 36 may be a smoothly transitional curved surface, so that resistance of airflow passing through can be reduced, and for a multi-side air outlet mode, for example, three-side air outlet as shown in fig. 12, a plurality of guide vanes 36 may be disposed in the accommodating cavity so as to orderly guide airflow in the accommodating cavity to the air outlets 30A on each side, thereby avoiding turbulence of airflow in the accommodating cavity, and simultaneously enabling flow of each air outlet 30A to be relatively uniform, and improving air outlet efficiency.

The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. A purification apparatus, comprising:

the first shell is provided with an air inlet;

the second shell is connected with the first shell to form an air outlet, and the air outlet is adjacent to the first shell and the second shell;

the filter piece fills the air outlet to form a containing cavity with the first shell and the second shell, and the containing cavity is communicated with the air inlet; the filter element is a component which can filter, absorb and purify oil smoke or water vapor;

wherein the second shell is detachably connected with the first shell, so that the filter element is detachable; the second shell is assembled and connected with the first shell to form a shell of the purifying device;

the first housing includes: the top wall is arranged at one end of the first shell and surrounds the air inlet; two oppositely arranged side walls, each of which is connected with the top wall and extends to the other end of the first shell;

the second shell is a frame-shaped component connected end to end; the first ends of the second shell are detachably connected with the other ends of the two side walls, and the first ends and the side walls form two oppositely arranged first openings; a second opening is arranged at a second end of the second shell opposite to the first end;

at least part of the first opening and the second opening are opened to form the air outlet, and the first opening and the second opening can be closed and opened to adjust the air outlet form of the purification device.

2. The purification apparatus of claim 1, wherein one end of the first housing has the air inlet, and the other end of the first housing opposite the one end is adjacent to and removably connected to the second housing.

3. The purification apparatus of claim 1, wherein the first housing and the second housing are connected in a substantially rectangular body configuration, the first opening having two and being disposed on opposite sides of the rectangular body, respectively, and the second opening being disposed between the opposite sides.

4. A purification apparatus as claimed in claim 1 or 3, wherein,

the second shell comprises two first end walls which are oppositely arranged and a second end wall which is arranged between the two first end walls, and the second end wall is provided with two second end walls which are oppositely arranged; the first end wall and the second end wall enclose the second opening;

the side wall of the first shell is clamped with the first end wall of the second shell so as to detachably connect the first shell and the second shell; the second end wall and the side wall enclose the first opening.

5. The purification apparatus of claim 4,

the outer surface of the side wall of the first shell is provided with a first groove communicated with the other end, and the first end of the second shell is provided with a first protrusion in a protruding mode;

or, the side wall of the first shell is provided with a first bulge connected with the other end, and the outer surface of the second shell is provided with a first groove communicated with the first end;

the first protrusion is clamped with the first groove.

6. The purification apparatus of claim 5,

the other ends of the side walls of the first shell are protruded to form protruding blocks, and the free ends of the protruding blocks extend to the direction close to the accommodating cavity to form positioning blocks;

the first end of the second shell forms a positioning groove;

wherein, the lug is abutted with the positioning groove.

7. A purification apparatus as claimed in claim 1 or claim 3, wherein the side wall has a second recess adjacent the inner wall of the first opening; the filter is insertable into the second recess to fill the first opening.

8. The purification apparatus of claim 7, wherein a stiffener is disposed within the second recess.

9. A purification apparatus according to claim 1 or claim 3, further comprising a filter screen located in the receiving chamber, the filter screen being disposed around the air inlet.

10. The purification apparatus of claim 9, wherein the filter screen comprises:

one end of the first filter screen surrounds the air inlet and is fixedly connected with the top wall;

the second filter screen is fixedly connected to the other end of the first filter screen so as to form a filter space with the first filter screen, and the second filter screen is provided with a through hole;

the dirt collecting box is connected to the outer surface of the second filter screen and is communicated with the through hole.

11. The purification apparatus of claim 10, further comprising a deflector positioned within the receiving chamber, the deflector being attached to an outer surface of the first filter screen.

12. A range hood comprising a purification apparatus as claimed in any one of claims 1 to 11.