CN112432214A

CN112432214A - Purifier and range hood

Info

Publication number: CN112432214A
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: 2021-03-02
Anticipated expiration: 2040-11-27
Also published as: CN112432214B

Abstract

The invention provides a purifying device and a range hood, and relates to the technical field of kitchen utensils. This purifier includes: a first housing having an air inlet; the second shell is connected with the first shell to form an air outlet; the filtering piece is used for filling the air outlet to form an accommodating cavity by enclosing the air outlet with the first shell and the second shell, and the accommodating cavity is communicated with the air inlet; wherein, the connection of second casing and first casing is for detachably connecting to make filtering piece detachable. The purifying device and the range hood of 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 utensils, and particularly relates to a purifying device and a range hood.

Background

The fume exhauster is a kitchen appliance for purifying kitchen environment, and can quickly exhaust waste burnt by a stove and waste gas such as oil fume, water vapor and the like generated in the cooking process, and then perform filtering, purifying and discharging. The range hood comprises a fume collecting hood, a flue and a purifying device. The exhaust fume collecting hood sucks the exhaust fume into the flue, and the exhaust fume is filtered and purified by the purifying device. The purification device comprises a filter element which is a core component capable of filtering and absorbing the waste gas. The internal circulation type range hood adopts an indoor discharge mode, and after being sucked into the range hood, oil smoke is filtered, purified and then discharged back to the indoor. 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 higher.

In the related art, a purification apparatus using activated carbon as a filter member is divided into a front purification apparatus and a rear purification apparatus. For the preposed purifying device, because the water vapor in the oil smoke has great influence on the performance of the active carbon, a water absorption structure is often needed to be added to dehydrate the oil smoke, so that the noise is increased due to the increase of air inlet resistance. For the post-purification device, the related purification device employs an integral component and is bulky to reduce resistance to air flow, so that the bulky structure needs to be replaced when the purification device is replaced, resulting in high cost.

Disclosure of Invention

In view of this, the present invention provides a purifying device and a range hood to solve the technical problem of how to reduce 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: a first housing having an air inlet; the second shell is connected with the first shell to form an air outlet; the filter element fills the air outlet to form an accommodating cavity by being enclosed with the first shell and the second shell, and the accommodating cavity is communicated with the air inlet; wherein the second housing is detachably connected to the first housing to allow the filter element to be detached.

Further, one end of the first shell is provided with the air inlet, and the other end, opposite to the one end, of the first shell 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 encloses the air inlet; two spaced apart side walls, each of the side walls connecting 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; the first end of the second shell is detachably connected with the other ends of the two side walls, and the first end and the side walls form a first opening; a second opening is formed in a second end, opposite to the first end, of the second shell; 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 to form a substantially rectangular structure, the first opening has two portions and is disposed on two opposite sides of the rectangular parallelepiped, respectively, and the second opening is disposed between the two opposite sides.

Further, 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 comprises two first 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.

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 bulge 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; wherein, the first bulge is clamped with the first groove.

Furthermore, the other end of the side wall of the first shell protrudes to form a bump, and the free end of the bump extends to the direction close to the accommodating cavity to form a positioning block; 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 close to the first opening is provided with a second groove; the filter element is insertable into the second recess to fill the first opening.

Further, a reinforcing rib is arranged in the second groove.

Further, purifier still including being located hold the filter screen in the chamber, the filter screen centers on the air intake sets up.

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

Further, purifier still including being located hold the water conservancy diversion piece in the chamber, the water conservancy diversion piece is connected the surface of first filter screen.

The invention also provides a range hood, which comprises the purification device.

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

Drawings

FIG. 1 is a schematic view of the operation principle of a related internal circulation range hood;

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

FIG. 3 is an assembly view of a purification apparatus according to an embodiment of the present invention from one perspective;

FIG. 4 is a schematic perspective view of a first housing of a purification 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 the purification apparatus of the embodiment of the present invention from another perspective;

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 purification apparatus according to an embodiment of the present invention from another perspective;

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.

Description of reference numerals:

1-a range hood, 10-a smoke collecting hood, 20-an upstream smoke pipe, 30-a purifying device, 30A-an air outlet, 30B-a first opening, 30C-a second opening, 30D-a reinforcing rib, 31-a first shell, 311-an air inlet, 312-a top wall, 313-a side wall, 313A-a first groove, 313B-a bump, 313C-a positioning block, 313D-a slot, 313E-a second groove, 32-a second shell, 321-a first end wall, 321A-a first bulge, 321B-a positioning groove, 321C-a bolt, 322-a second end wall, 33-a filtering piece, 34-an upstream smoke pipe, 35-a filtering net, 351-a first filtering net, 352-a second filtering net, 3521-a through hole and 353-a dirt collecting box, 36-guide vane, 40-exhaust duct

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The individual features described in the embodiments can be combined in any suitable manner without departing from the scope, for example different embodiments and aspects can be formed by combining different features. In order to avoid unnecessary repetition, various possible combinations of the specific features of the invention will not be described further.

In the following description, the term "first/second/so" is used merely to distinguish different objects and does not mean that there is a common or relationship between the objects. It should be understood that the references to "above" and "below" are to be interpreted as referring to the orientation during 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 an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. The term "coupled", where not otherwise specified, includes both direct and indirect connections.

The invention provides a purification 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 type of application scenario of the present invention does not limit the purification apparatus of the present invention.

The following description is given by taking the example that the purification device is applied to the range hood, and the working principle of the range hood is exemplarily explained. The range hood can be divided into an outer exhaust type and an inner exhaust type. The outer-discharging type range hood filters, purifies and discharges the pumped oil smoke gas to the external environment. The internal-exhaust type range hood is used for filtering and purifying the exhausted oil fume and then exhausting the oil fume back to the room through a circulating channel, is also called as an internal-circulating type range hood, and is suitable for places without a public flue or where the oil fume cannot be exhausted outside. Therefore, compared with an external exhaust type range hood, the internal exhaust type range hood has higher purification capacity and requirement 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 position of the purification device, the front purification device is relatively close to the oil fume inlet and is positioned in the front of the flue before and after being defined according to the direction from the oil fume inlet to the oil fume outlet of the airflow, and correspondingly, the rear purification device is relatively far away from the oil fume inlet and is positioned in the rear of the flue. The working principle of the internal exhaust type range hood with the rear purification device is generally explained below by taking an example.

As shown in fig. 1, the related range hood 1 includes a smoke collecting hood 10, an upstream smoke pipe 20, a purification apparatus 30, and an exhaust duct 40. The fume collecting hood 10 is arranged above the cooking range, after the range hood 1 is connected with a power supply, the motor in the machine body drives the impeller in the volute to rotate, so that a negative pressure area is formed in a certain range above the cooking range, therefore, the fume collecting cover 10 can suck the fume and/or water vapor and the like generated in the cooking process into the flue, firstly, most of oil stain particles are filtered and separated by the first filtering device arranged in the flue, the rest gas enters the centrifugal fan system, the oil smoke gas is thrown out of the impeller by the centrifugal force through the high-speed rotation of the fan impeller, the oil smoke is separated again, the separated oil flows into the oil cup through the oil guiding system, the separated smoke enters the purifying device 30 along the upstream smoke tube 20 for secondary filtering and purifying treatment so as to further filter harmful substances in the smoke, thereby reaching the emission standard, and the purified clean gas is directly discharged to the indoor environment through the exhaust pipeline 40. Wherein, purifier 30 is as one of range hood 1's core component, plays crucial effect to the filtration purification of the gas of discharging to the indoor environment, needs to guarantee the filter and the adsorption efficiency of the interior filter piece of purifier 30 in order to guarantee the purifying effect of flue gas.

In the embodiment of the present invention, as shown in fig. 2 and 3, the purification apparatus 30 includes a first housing 31, a second housing 32, and a filter member 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 communicated with the passage of the upstream smoke tube 34, and the air inlet 311 is connected with the upstream smoke tube 34 to allow the smoke gas from the upstream smoke tube 34 to enter. The shape of the air inlet 311 is arbitrary, and may be a substantially rectangular air inlet, a substantially circular arc air inlet, or a special-shaped air inlet. The area of the air inlet 311 can be set according to the power of the range hood 1 and the amount of the oil smoke, the number of the air inlets 311 can also be set according to actual needs, and in an exemplary embodiment, one air inlet 311 is adopted for further explanation.

As shown in fig. 3, the second housing 32 is connected to the first housing 31 to form the air outlet 30A, and the connection between the second housing 32 and the first housing 31 is detachable. Specifically, the second housing 32 may be a thin-walled member having any structure and shape. The second housing 32 and the first housing 31 are assembled to form a housing of the purifying device 30, which not only can protect other components inside the purifying device 30, but also can form an airflow channel for passing the lampblack gas. The second housing 32 and the first housing 31 may be connected by a fastener, a mortise and tenon joint, or by gluing or electrical connection.

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, the oil fume is guided to the air outlet 30A through the flow channel, and the air outlet 30A is used for discharging the filtered and purified clean air. The number of the air outlets 30A is arbitrary, and may be one or multiple, and may be specifically set according to actual needs, and for a plurality of air outlets 30A, the shape or size of each air outlet 30A may be the same or different. The shape of the outlet 30A is arbitrary, and may be a substantially rectangular shape, a circular arc shape, or a special-shaped outlet 30A. The size of the air outlet 30A can be determined according to the actual air output requirement.

As shown in fig. 3, the filter member 33 fills the air outlet 30A to enclose with the first and

second cases

31 and 32 to form a housing chamber, which communicates with the air inlet 311. Note that the filling means that the filter 33 is provided in the entire area of the region of the outlet 30A. The filter 33 is a member that can filter, absorb, and purify gas such as soot or steam. Specifically, the filtering element 33 may be activated carbon, or may be a high-efficiency air filter, or of course, the filtering element may be another filtering device capable of filtering oil smoke gas impurities to achieve an air purifying effect. In the exemplary embodiment, filter element 33 is activated carbon. The structural shape and size of the filter element 33 can be set by referring to the structural shape and size of the air outlet 30A, so that the utilization rate of the filter element 33 can be effectively improved, and the assembly difficulty among the components can be simplified. For example, for the air outlet 30A with a substantially rectangular shape, the filtering member 33 may also be a substantially rectangular body, and the cross-sectional area of the filtering member 33 may be slightly larger than the area of the air outlet 30A, so that the filtering member 33 can better cover the whole air outlet 30A, and a gap between the filtering member 33 and the edge of the air outlet 30A is effectively avoided, thereby effectively reducing the pollution to indoor air caused by the direct escape of the unfiltered and purified oil smoke gas from the gap. For a purification apparatus 30 having a plurality of outlets 30A, each outlet 30A is filled with a filter 33. The filter member 33 fills the air outlet 30A and forms a cavity with the first housing 31 and the second housing 32, i.e., the accommodating chamber. The accommodating chamber is communicated with the air inlet 311, so that the air flowing into the air inlet 311 can enter the accommodating chamber, and the accommodating chamber provides a flowing space for the flowing of the air. By arranging the filter 33 at the air outlet 30A of the purification device 30, the gas such as oil smoke, water vapor and the like is filtered, absorbed, purified and then discharged to the indoor environment through the filter 33.

The filter member 33 is detachable. Specifically, as shown in fig. 2, the connection between the first housing 31 and the second housing 32 is detachable, and when a user needs to replace the filter element 33, the first housing 31 and the second housing 32 can be detached, so as to take out the filter element 33 to be replaced, place a new filter element 33, and then reassemble the first housing 31 and the second housing 32.

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 to the second housing 32. Specifically, the first casing 31 has two opposite ends, one end of which is an air inlet 311 (an upper end as shown in fig. 3) of the purification apparatus 30, and the other end (a lower end as shown in fig. 3) of the first casing 31 is detachably connected to the second casing 32, that is, the second casing 32 is located at one end of the first casing 31 and forms an assembly with the first casing 31. With the one end that the detachable end set up first casing 31, can keep the integrality of first casing 31 under the split state, and make the detachable end relative with the one end at air intake 311 place to divide the functional area of first casing 31 better, promote the convenience of using.

As shown in fig. 3, the outlet 30A is adjacent to the second housing 32. Specifically, when the second housing 32 is described as forming at least a part of the side wall of the outlet 30A, the outlet 30A is in a state where the second housing 32 is separated from the first housing 31 by disconnecting the second housing 32 from the first housing 31, and the side wall is open, or the outlet 30A is defined only by the second housing 32, so that the filter member 33 installed in the outlet 30A can be easily removed and replaced.

The detachable end of the purification device is arranged at the end opposite to the air inlet, so that the use convenience is improved; and with the air outlet and the adjacent setting of second casing, unpack the second casing like this and just can open the air outlet to make things convenient for the dismantlement and the installation of filtering the piece.

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. In particular, the top wall 312 may be a circumferentially continuous frame member that surrounds the intake vent 311 to define a wall of the intake vent 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 the dimensions of the side wall 313 in the length direction and the width direction of the air inlet 311, or the dimension of the top wall 312 in the length direction of the air inlet 311 is smaller than the dimension 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 smoke tube 34, and the neck portion forms an inlet passage for gas, that is, the air inlet 311. The shape of the top wall 312 is arbitrary, and may be substantially rectangular, circular, or other shapes, and may be set according to actual needs.

As shown in fig. 4, two spaced apart side walls 313, each side wall 313 connects the top wall 312 and extends to the other end of the first housing 31. Specifically, the two side walls 313 may have substantially the same structure and shape, the two side walls 313 may have a substantially planar shape, may have a substantially curved shape as shown in fig. 5a, and may have a substantially planar shape and a substantially curved shape, and the specific structure of the side walls 313 may be determined according to the actual space requirement. In the exemplary embodiment, both side walls 313 are configured in a substantially planar shape, and the shape of each side wall 313 is arbitrary, and may be, for example, substantially rectangular as shown in fig. 4, polygonal as shown in fig. 5b, or circular as shown in fig. 5 c. The two side walls 313 may be spaced apart by a distance approximately the same as the width of the top wall 312. One end of each side wall 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 side wall 313. The side wall 313 extends in a direction substantially perpendicular to the outer wall surface of the top wall 312.

As shown in fig. 2 and 3, the second casing 32 is a frame-shaped member connected end to end, a first end of the second casing 32 is detachably connected to the other end 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 casing 32 opposite to the first end is provided with a second opening 30C. Specifically, the shape of the second housing 32 may be various, 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 casing 32 also has opposite ends, one of which is fit-connected to ends of the two side walls 313 of the first casing 31 remote from the air inlet 311, and an outer edge of one end of the second casing 32 forms a first opening 30B communicating with the accommodating chamber with outer edges of the two side walls 313 and an 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 term "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 purifying device 30, so that the purifying device 30 forms three-side air outlet; the second opening 30C may be closed, and only the first opening 30B is 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 purifying device 30, so that the purifying device 30 may form one-side air outlet. The specific way of closing the opening may be that the blocking plate is fixedly connected to the first housing 31 or the blocking plate is configured to be integrally formed with the first housing 31, but of course, other ways of closing the opening may also be used. The specific air outlet form 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 shell is arranged into a specific structure form of two side walls arranged at intervals, and a first opening and a second opening are formed 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 to form three-side, two-side or single-side air outlet.

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. The substantially rectangular body means that an assembly formed by the first housing 31 and the second housing 32 is a rectangular body or an approximately rectangular body. 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-shaped member having a substantially rectangular shape, so that the first housing 31 and the second housing 32 are assembled to form a substantially rectangular structure. And the side wall 313 of the shell of the purification device 30 can be arranged 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 disposed on opposite sides of the rectangular parallelepiped, respectively, and the second opening 30C is disposed between the opposite sides. Specifically, the first openings 30B are located at two sides of the first housing 31 in the length direction, and each side has one first opening 30B. 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 can be determined according to the air outlet requirement of the user, so that the purification device 30 is formulated to be three-side air outlet in a left-right lower form or double-side air outlet in a left-right form or single-side air outlet in a bottom form. In the use state, all three air outlet forms are discharged from the peripheral side of the purification device 30 to the indoor environment, and are not discharged from the front, so that poor body feeling caused by air outlet from the front can be effectively reduced.

By arranging the assembly body of the first shell and the second shell into a substantially rectangular structure, 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 oppositely and a second end wall 322 disposed between the two first end walls 321, and the second end wall 322 has two and is disposed oppositely. Specifically, the two first end walls 321 have substantially the same structure and shape and are oppositely spaced apart in substantially 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 disposed 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 substantially 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 enclose to form a substantially rectangular frame-shaped component.

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 space enclosed can be used for placing 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 housing 31 and the second housing 32 are integrated by the assembly connection of the first end wall 321 and the side wall 313, and the first end wall 321 and the side wall 313 are in smooth transition connection. 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, the outer edge of the side wall 313, and the top wall 312 form the first opening 30B.

As shown in fig. 6, the height (the length in the up-down direction shown in fig. 6) of the first end wall 321 may be much smaller than the height of the side wall 313, so as to effectively reduce the occupied space of the detached second housing 32, and facilitate the user's handling operation.

The second shell is provided with the first end wall and the second end wall, and is detachably connected with the first shell, so that 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 shell 31 is provided with a first groove 313A communicated with the other end, the first end of the second shell 32 is protrudingly provided with a first protrusion 321A, 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, the shape and structure of the first protrusion 321A are arbitrary, and the number of the first protrusions 321A may be one or multiple. In the exemplary embodiment, an outer edge of each first end wall 321 is provided with two first protrusions 321A. As shown in fig. 8, the first groove 313A is disposed near one end of the second housing 32, and the first groove 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 groove 313A. The first recesses 313A are substantially matched in structure, shape and number with the first protrusions 321A, so that the first shell 31 and the second shell 32 can be clamped accurately to form an assembly body as shown in fig. 6. The detachable connection of the first shell 31 and the second shell 32 can be realized by prefabricating through holes at corresponding positions of the first protrusion 321A and the first groove 313A and then clamping the first protrusion 321A with the first groove 313A through a fastener.

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 groove 313A.

Through the concrete structural style that sets up arch and recess on first casing and second casing, realize dismantling of first casing and second casing and connect, simple structure easily realizes, also convenience of customers's dismouting simultaneously.

In some embodiments, as shown in fig. 9, the other end of the sidewall 313 of the first shell 31 protrudes to form a protrusion 313B, and a free end of the protrusion 313B extends to a direction close to the receiving cavity to form a positioning block 313C. Specifically, the outer edge of the end of the side wall 313 close to the second housing 32 protrudes to form a protrusion 313B, and the end of the protrusion 313B close to the second housing 32 extends in a direction close to the accommodating cavity (downward direction as shown in fig. 9) to form a positioning block 313C, and the positioning block 313C can play a role in compressing 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 protrusion 313B abuts against the positioning groove 321B. The contact means contact between the two, and there is no relative displacement. Specifically, the protrusion 313B can extend into the positioning groove 321B to form a tight connection, and the protrusion 313B abuts against the positioning groove 321B, so that the reliability of the connection between the first housing 31 and the second housing 32 is further enhanced.

As shown in fig. 9, the 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 pin 321C near an inner wall surface of the positioning groove 321B. The latch 321C can extend into the insertion groove 313D to further improve the tightness of the connection between the first casing 31 and the second casing 32.

Set up the lug through the outer fringe at first casing, the outer fringe of second casing forms the constant head tank to the butt through lug and constant head tank further improves first casing and second casing assembly connection's reliability.

In some embodiments, as shown in fig. 8, the inner wall surface of the side wall 313 near the first opening 30B has a second groove 313E. Specifically, the second groove 313E is disposed at an end of the side wall 313 near the first opening 30B, so that a larger space for gas to flow is reserved. The second groove 313E may extend along the second opening 30C toward the air inlet 311. Optionally, 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 member 33. The filter member 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 and the first housing 31 form a stable connection, thereby effectively reducing the risk of shaking or loosening the filter element 33 relative to the first housing 31. In the using process, a user can firstly take off the second shell 32 and then pull out the filter element 33 positioned in the second groove 313E along the second groove 313E, so as to finish the disassembly of the old filter element 33, and the process is simple and easy to operate. Through set up the second recess at the internal face of first casing lateral wall, filter and arrange the second recess in with the mode of block in, both can fix a position filtering piece, make things convenient for the dismouting of filtering piece again.

In some embodiments, as shown in FIG. 8, a reinforcing bead 30D is disposed within the second groove 313E. Specifically, the specific structural form of the reinforcing rib 30D is arbitrary, and the reinforcing rib 30D can enhance the strength of the positioning surface of the second groove 313E, and can also improve the friction force 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, a rib 30D may be provided on the inner wall surface of the second housing 32 to increase the strength of the second housing 32. The reinforcing ribs are arranged on the inner wall surface of the shell of the purification device, so that the shell strength of the purification device is effectively improved.

In some embodiments, as shown in fig. 10, the purification apparatus 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 at a position close to the air inlet 311 in the accommodating cavity to filter oil in the air, so that the contact between the grease and the filter element 33 can be effectively reduced, and the poor purification effect can be avoided. Through setting up the filter screen in purifier, the filter screen is accomplished and is filtered the first time of gas such as oil smoke, vapor, filters and accomplishes the secondary filtration purification to gas again, and the mode of multistage purification can effectively promote purifying effect and prolong the life who filters.

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 enclosed by a substantially planar shape, or may be enclosed by a substantially arc shape, and in an exemplary embodiment, the following description will be continued by using the first filter 351 enclosed by a substantially planar shape. The first filter screen 351 has two oppositely arranged inclined planes, and in a use state, the inclined planes and the horizontal direction have a certain inclination angle, so that the first filter screen 351 is integrally funnel-shaped. The inclined plane is the windward side of the first filter screen 351 and is also the main filtering surface of the grease, and the accumulated grease can continuously flow downwards along the inclined plane under the action of self gravity.

As shown in fig. 10, the second filter 352 is fixedly connected to the other end of the first filter 351 so as to form a filter space with the first filter 351, and the second filter 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 surround to form a filter space, and the second filter screen 352 is provided with a through hole 3521 for discharging accumulated grease.

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

Through setting the filter screen to the concrete structural style of first filter screen, second filter screen and dirty box of collection, the structure is simple and easy.

In some embodiments, as shown in fig. 12, the purification apparatus 30 further includes a guide vane 36 located in the receiving cavity, and the guide vane 36 is connected to an outer surface of the first filter screen 351. The outer surface is a surface outside the filter space. Specifically, the guide vane 36 is fixed to the outer surface of the first filter screen 351 so as to be positioned, the guide vane 36 may be a smooth-transition curved surface, the resistance of the air flow passing through can be reduced, for the multi-side air outlet mode, for example, three-side air outlet as shown in fig. 12, a plurality of guide vanes 36 may be arranged in the accommodating cavity, so that the air flow in the accommodating cavity is guided to the air outlet 30A on each side in order, the air flow disorder in the accommodating cavity is avoided, the flow of each air outlet 30A is relatively uniform, and the air outlet efficiency is improved.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. A purification apparatus, comprising:

a first housing having an air inlet;

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

the filter element fills the air outlet to form an accommodating cavity by being enclosed with the first shell and the second shell, and the accommodating cavity is communicated with the air inlet;

wherein the second housing is detachably connected to the first housing to allow the filter element to be detached.

2. The purification apparatus of claim 1, wherein the first housing has the air inlet at one end thereof, and the other end of the first housing opposite to the one end is adjacent to and detachably connected to the second housing; the air outlet is adjacent to the second shell.

3. The purification apparatus of claim 2,

the first housing includes: the top wall is arranged at one end of the first shell and encloses the air inlet; two spaced apart side walls, each of the side walls connecting 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; the first end of the second shell is detachably connected with the other ends of the two side walls, and the first end and the side walls form a first opening; a second opening is formed in a second end, opposite to the first end, of the second shell;

at least part of the first opening and the second opening is opened to form the air outlet.

4. The purification apparatus of claim 3, wherein the first housing and the second housing are connected in a substantially rectangular parallelepiped configuration, the first opening has two and is disposed on opposite sides of the rectangular parallelepiped, respectively, and the second opening is disposed between the opposite sides.

5. Purification device according to claim 3 or 4,

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 comprises two first 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.

6. The purification apparatus of claim 5,

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 bulge 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;

wherein, the first bulge is clamped with the first groove.

7. The purification apparatus of claim 6,

the other end of the side wall of the first shell protrudes to form a bump, and the free end of the bump extends to the direction close to the accommodating cavity to form a positioning block;

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

wherein, the lug is abutted with the positioning groove.

8. The purification apparatus of claim 3 or 4, wherein an inner wall surface of the sidewall adjacent to the first opening has a second groove; the filter element is insertable into the second recess to fill the first opening.

9. The purification apparatus of claim 8, wherein a rib is disposed in the second groove.

10. The purification apparatus of claim 3 or 4, further comprising a filter screen positioned in the receiving chamber, the filter screen being disposed around the air inlet.

11. The purification apparatus of claim 10, 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;

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

12. The purification apparatus of claim 11, further comprising a baffle positioned in the receiving chamber, the baffle being attached to an outer surface of the first filter.

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