A VOC catalytic oxidation direct exhaust full pollutant removal range hood

Abstract

The present invention relates to a VOC catalytic oxidation direct exhaust, fully pollutant-removing range hood, comprising: a range hood body, the bottom of which is equipped with a smoke inlet; a purification unit, mounted on the top inner portion of the range hood body; the purification unit is used to catalytically oxidize VOCs; and a cleaning unit, the cleaning unit comprising a first cylinder mounted on the inner side wall of the range hood body and a second cylinder mounted on the opposite side of the first cylinder. The present invention hinges first filters to the telescopic ends of the first and second cylinders, respectively, to filter particulate matter in oil smoke through the first filters. Two sets of upper and lower first filters are provided, enabling double-layer filtration. The bottom first filter is moved so that its legs scrape the bottom of the upper first filter, effectively filtering particulate matter in oil smoke while achieving a self-cleaning effect. The cleaning method is simple, convenient, and low-cost.

Description

Technical Field

[0001] The present invention relates to the field of range hoods, and in particular to a range hood capable of directly discharging VOCs through catalytic oxidation and full pollutant removal. Background Art

[0002] After the primary treatment of household cooking fumes by equipment such as range hoods, most of the particulate matter is adsorbed or collected and cannot enter the human body, so the harm to human health is relatively small. However, the gaseous pollutants, mainly VOCs, cannot be treated by fume purification equipment at present, and are directly discharged into the atmosphere or inhaled into the human body, causing harm to the atmospheric environment and human health. According to statistics, the vast majority of household range hoods in China do not have the oil and gas separation function. They simply connect the exhaust pipe to the fan to achieve the function of extracting and exhausting smoke. They have almost no purification effect on atmospheric pollutants such as oil smoke and volatile (VOCs), resulting in the direct discharge of oil pollution to the outdoors, which not only causes certain pollution to the atmosphere, but also pollutes the exterior walls of buildings, causing the common "greasy nose" phenomenon. At the same time, ordinary range hoods are inconvenient to clean the filter at the top of the range hood, affecting the safe emission of oil smoke. Summary of the Invention

[0003] The purpose of the present invention is to provide a VOC catalytic oxidation direct exhaust full pollutant removal range hood.

[0004] To solve the above-mentioned technical problems, the present invention provides a VOC catalytic oxidation direct exhaust full pollutant removal range hood, comprising: a range hood body, a smoke inlet mounted at the bottom of the range hood body; a purification unit mounted at the top of the range hood body; the purification unit for catalytically oxidizing VOCs; a cleaning unit, the cleaning unit comprising a first cylinder mounted on the inner side wall of the range hood body and a second cylinder mounted on an opposite side of the first cylinder, a first filter hingedly connected to the first cylinder and the second cylinder, and a support leg mounted on the top of the first filter; one end of the first filter hingedly connected to the inner side wall of the range hood body, and the second cylinder located above the first cylinder; when cleaning the first filters, it is inconvenient to clean the upper group of first filters, and by activating the second cylinder to retract it and then activating the first cylinder to retract it, the two groups of first filters rotate upward about the hinge point. When the upper first filters rotate to the corresponding position, the lower first filters follow the movement of the first cylinder and scrape the bottom of the upper first filters.

[0005] Furthermore, outer shells are provided on both sides of the range hood body, the first cylinder and the second cylinder are installed in the outer shells, and a storage tank is provided on one side of the top of the first filter.

[0006] Furthermore, a slide groove is provided on one side of the top of the first filter screen, a slider is installed inside the slide groove, a first spring is fixed to one side of the slider, the support foot is fixed on the top of the slider, the slider is slidably installed in the slide groove, and the slider can slide left and right inside the slide groove; the support foot is semicircular.

[0007] Furthermore, an installation groove is provided on the inner side wall of the range hood body, a clamping block is installed inside the installation groove, a second spring is installed at one end of the clamping block, and an inclined surface is provided at one end of the clamping block; when the two groups of the first filter screens are rotated to a parallel position, the end of the first filter screen is placed on the top of the clamping block.

[0008] Furthermore, the purification part includes a guide pipe installed on the top of the first filter screen and a tube reaction pool fixed on the top of the guide pipe. A plurality of guide holes are opened at the bottom of the guide pipe, and air guide pipes are installed on both sides of the top of the guide pipe. Both ends of the air guide pipe are connected to the reaction pool.

[0009] Furthermore, a second filter screen is installed on the top of the reaction tank.

[0010] Furthermore, two groups of suction fans are installed inside the range hood body, and the angle between the two groups of suction fans is 150 degrees. An air outlet is opened on the top of the range hood body.

[0011] Furthermore, an air intake hood is provided at the bottom of the range hood body, a control panel is installed on one side of the air intake hood, and several groups of lighting lamps are provided at the bottom of the air intake hood.

[0012] The beneficial effect of the present invention is that the VOC catalytic oxidation direct-discharge full-pollutant removal range hood of the present invention can be used to clean the range hood and filter particulate matter in the oil smoke by setting a cleaning part. The first filter screen is hinged at the telescopic end of the first cylinder and the second cylinder respectively, and the particulate matter in the oil smoke is filtered through the first filter screen, and two groups of upper and lower first filter screens are set, so that double-layer filtration can be performed to improve the filtering effect, and the bottom of the upper first filter screen is scraped by the bottom of the first filter screen while moving, so that the particulate matter in the oil smoke is filtered in a double-layer and high-efficiency manner, and the self-cleaning effect is achieved at the same time. The cleaning method is simple and convenient, and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below with reference to the accompanying drawings and examples.

[0014] Figure 1 is a perspective view of the present invention;

[0015] Figure 2This is a schematic diagram of the front cross-sectional structure of the first filter screen of the present invention when it is in the initial position;

[0016] Figure 3 This is a schematic diagram of the front cross-sectional structure of the first filter screen of the present invention when it rotates;

[0017] Figure 4 The present invention Figure 2 A schematic diagram of the partially enlarged structure at center A;

[0018] Figure 5 It is a front view of a suction fan of the present invention.

[0019] In the picture:

[0020] 1. Range hood body; 11. Outer shell; 12. Mounting slot; 13. Clamping block; 14. Second spring; 15. Inclined surface;

[0021] 2. Purification unit; 21. Flow guide tube; 22. Reaction pool; 23. Flow guide hole; 24. Air guide tube; 25. Second filter;

[0022] 3. Smoke inlet;

[0023] 4. Cleaning unit; 41. First cylinder; 42. Second cylinder; 43. First filter; 431. Storage tank; 432. Slide; 433. Slider; 434. First spring; 44. Support foot;

[0024] 5. Suction fan; 51. Air outlet; 52. Light; 53. Air intake hood; 54. Control panel

[0025] 6. Valve. DETAILED DESCRIPTION

[0026] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0027] like Figure 1-5 As shown, a VOC catalytic oxidation direct-discharge full-pollutant removal range hood of the present invention comprises: a range hood body 1, a smoke inlet 3 is installed at the bottom of the range hood body 1, two groups of suction fans 5 are installed inside the range hood body 1, and the angle between the two groups of suction fans 5 is 150 degrees. An air outlet 51 is opened at the top of the range hood body 1, an air intake cover 53 is provided at the bottom of the range hood body 1, a control panel 54 is installed on one side of the air intake cover 53, and a plurality of groups of lighting lamps 52 are provided at the bottom of the air intake cover 53.

[0028] The range hood body 1 is in the shape of a rectangular parallelepiped with a hollow interior. An air intake hood 53 is installed at the bottom of the range hood body 1, and a smoke inlet 3 is located at the bottom of the air intake hood 53. The smoke is counted into the range hood body 1 through the smoke inlet 3, and two groups of inclined suction fans 5 are installed on the top of the smoke inlet 3, so that the smoke can be drawn into the first filter 43 for filtration over a larger area. Solid particles with catalytic oxidation function can also be placed on the first filter 43 to increase the catalytic effect of removing kitchen smoke. The lighting and suction fan 5 are controlled by the control panel 54, so that the range hood can be controlled independently. By starting the suction fan 5, the suction fan 5 draws the smoke into the interior of the range hood body 1 through the smoke inlet 3.

[0029] The cleaning part 4 includes a first cylinder 41 installed on the inner wall of the range hood body 1 and a second cylinder 42 installed on the opposite side of the first cylinder 41. The first cylinder 41 and the second cylinder 42 are hinged with a first filter 43 and a support foot 44 installed on the top of the first filter 43; one end of the first filter 43 is hinged to the inner wall of the range hood body 1, and the second cylinder 42 is located above the first cylinder 41; when cleaning the first filter 43, it is inconvenient to clean the group of first filters 43 on the upper side. By starting the second cylinder 42 to shrink and then starting the first cylinder 41 to shrink, the two groups of first filters 43 rotate upward around the hinge point. When the first filter 43 on the upper side rotates to the corresponding position, the first filter 43 at the bottom scrapes the bottom of the first filter 43 above while following the movement of the first cylinder 41.

[0030] By setting up the cleaning part 4, it can be used to clean the range hood and filter the particulate matter in the oil smoke. The first filter screen 43 is hinged at the telescopic end of the first cylinder 41 and the second cylinder 42, and the particulate matter in the oil smoke is filtered through the first filter screen 43. Two sets of first filter screens 43 are set up above and below, so that double-layer filtration can be performed to improve the filtering effect. When cleaning the first filter screen 43, it is inconvenient to clean the upper set of first filter screens 43. By starting the second cylinder 42 to retract and then starting the first cylinder 41 to retract, the two sets of first filter screens 43 are rotated upward around the hinge point. When the upper first filter screen 43 rotates to the corresponding position, the bottom first filter screen 43 scrapes the bottom of the upper first filter screen 43 while following the movement of the first cylinder 41, so that the particulate matter in the oil smoke is filtered in double layers while achieving the effect of self-cleaning. The cleaning method is simple and convenient, and the cost is low.

[0031] An outer shell 11 is provided on both sides of the range hood body 1 , the first cylinder 41 and the second cylinder 42 are installed in the outer shell 11 , and a storage tank 431 is provided on one side of the top of the first filter 43 .

[0032] By setting up the outer shell 11, the first cylinder 41 and the second cylinder 42 can be installed, so that the first cylinder 41 and the second cylinder 42 have sufficient expansion and contraction space to drive the first filter 43 to rotate around the hinge point, and a storage groove 431 is set to store the particles scraped off by the first filter 43, and the particles slide along the first filter 43 into the storage groove 431.

[0033] A slide groove 432 is provided on one side of the top of the first filter screen 43, and a slider 433 is installed inside the slide groove 432. A first spring 434 is fixed to one side of the slider 433. The support leg 44 is fixed to the top of the block 13, and the slider 433 is slidably installed in the slide groove 432. The slider 433 can slide left and right inside the slide groove 432; the support leg 44 is semicircular.

[0034] By installing the slider 433 inside the slide groove 432, the slider 433 is clamped inside the slide groove 432, and the slider 433 can slide left and right inside the slide groove 432. Since it is difficult to completely scrape the bottom of the first filter 43 when the support leg 44 scrapes the particulate matter on the first filter 43, when the first filter 43 moves, the bottom of the first filter 43 squeezes the support leg 44, causing the support leg 44 to move along the slide groove 432, thereby scraping the bottom of the first filter 43 more completely.

[0035] An installation groove 12 is provided on the inner side wall of the range hood body 1, and a clamping block 13 is installed inside the installation groove 12. A second spring 14 is installed at one end of the clamping block 13, and an inclined surface 15 is provided at one end of the clamping block 13; when the two groups of filters are rotated to a parallel position, the end of the first filter 43 is placed on the top of the clamping block 13.

[0036] Since one end of the first filter screen 43 is suspended and supported by the first cylinder 41 or the second cylinder 42, it is subjected to a large force. The provided block 13 allows the other end of the first filter screen 43 to be supported. When the two groups of first filter screens 43 rotate to a parallel position, the end of the first filter screen 43 is placed on the top of the block 13. When the first cylinder 41 pulls the first filter screen 43 to rotate to a certain position, the extrusion slope 15 causes the block 13 to expand and contract into the installation groove 12 without affecting the rotation of the first filter screen 43.

[0037] The purification unit 2 is installed at the top of the range hood body 1; the purification unit 2 is used for catalytic oxidation of VOCs. The purification unit 2 includes a guide pipe 21 installed on the top of the first filter 43 and a reaction tank 22 fixed on the top of the guide pipe 21. A plurality of guide holes 23 are opened at the bottom of the guide pipe 21. Air guide pipes 24 are installed on both sides of the top of the guide pipe 21. Both ends of the air guide pipe 24 are connected to the reaction tank 22. A second filter 25 is installed on the top of the reaction tank 22.

[0038] By setting up the purification part 2, VOC in the oil fume can be filtered. By installing the guide pipe 21 on the top of the first filter 43, the oil fume can be introduced into the air duct 24 through the guide hole 23 at the bottom of the guide pipe 21, and is introduced into the reaction tank 22 through the air duct 24 to fully contact with the catalytic oxide in the reaction tank 22. The catalytic oxidation is mixed in the water in the reaction tank 22, wherein the reaction tank can be filled with either liquid or solid granular catalysts, and the second filter 25 is set to block the oil fume, allowing the oil fume to fully contact with the catalytic oxide in the reaction tank 22, and completely remove VOC and other harmful impurities in the oil fume. The second filter 25 can also filter the air outlet 51 on the top to prevent impurities in the air outlet 51 from falling into the reaction tank 22.

[0039] The suction fan 5 is turned on and sends a start signal to the first cylinder 41, the second cylinder 42, and the valve 6 to start them. In response to the start signal, the first cylinder 41 drives the first filter 43 to rise. The second cylinder 42 and the valve 6 respond to the start signal, connecting the second filter 25 to the air outlet 51. After the smoke passes through the two sets of first filters 43 to filter large particles through the suction fan 5, it enters the reaction tank 22 through the guide pipe 21 and the air guide pipe 24 to undergo a catalytic oxidation reaction with the VOC catalytic oxidant. The purified gas is finally discharged through the second filter 25, the valve 6, and the air outlet 51. The suction fan 5 is turned on and sends a start signal to the first cylinder 41, the second cylinder 42, and the valve 6 to shut them down. In response to the shut-off signal, the first cylinder 41 drives the first filter 43 to descend and reset. After the valve 6 is closed, the passage between the second filter 25 and the air outlet 51 is closed, and the VOC catalytic oxidant in the reaction tank 22 is not connected to the outside world.

[0040] With the above-described preferred embodiments of the present invention as a guide, and with reference to the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. A VOC catalytic oxidation direct exhaust full pollutant removal range hood, characterized by: include: A range hood body (1), wherein a smoke inlet (3) is installed at the bottom of the range hood body (1); A purification unit (2), the purification unit (2) being installed on the top of the range hood body (1); the purification unit (2) being used for catalytically oxidizing VOCs; Two sets of cleaning parts (4), the cleaning parts (4) comprising a first cylinder (41) mounted on the inner side wall of the range hood body (1) and a second cylinder (42) mounted on the opposite side of the first cylinder (41), a first filter (43) being hingedly connected to the first cylinder (41) and the second cylinder (42), and a support foot (44) mounted on the top of the first filter (43); One end of the first filter (43) is hinged to the inner side wall of the range hood body (1), and the second cylinder (42) is located above the first cylinder (41); When cleaning the first filter screen (43), it is inconvenient to clean the group of the first filter screen (43) located above. By starting the second cylinder (42) to shrink, and then starting the first cylinder (41) to shrink, the two groups of the first filter screens (43) are rotated upward around the hinge point. When the first filter screen (43) located above is rotated to the corresponding position, the first filter screen (43) at the bottom follows the movement of the first cylinder (41) and scrapes the bottom of the first filter screen (43) located above.

2. A VOC catalytic oxidation direct exhaust full pollutant removal range hood as claimed in claim 1, characterized in that: An outer shell (11) is provided on both sides of the range hood body (1), the first cylinder (41) and the second cylinder (42) are installed in the outer shell (11), and a storage tank (431) is provided on one side of the top of the first filter (43).

3. A VOC catalytic oxidation direct exhaust full pollutant removal range hood as claimed in claim 2, characterized in that: A chute (432) is provided on one side of the top of the first filter screen (43), a slider (433) is installed inside the chute (432), a first spring (434) is fixed to one side of the slider (433), the support leg (44) is fixed to the top of the slider (433), the slider (433) is slidably installed in the chute (432), and the slider (433) can slide left and right inside the chute (432); The supporting foot (44) is in a semicircular arc shape.

4. A VOC catalytic oxidation direct exhaust full pollutant removal range hood as claimed in claim 3, characterized in that: The inner side wall of the range hood body (1) is provided with a mounting groove (12), a clamping block (13) is installed inside the mounting groove (12), a second spring (14) is installed at one end of the clamping block (13), and an inclined surface (15) is provided at one end of the clamping block (13); When the two groups of the first filter screens (43) are rotated to a parallel position, the ends of the first filter screens (43) are placed on the top of the block (13).

5. A VOC catalytic oxidation direct exhaust full pollutant removal range hood as claimed in claim 4, characterized in that: The purification section (2) comprises a flow guide pipe (21) installed on the top of the first filter screen (43) and a reaction pool (22) fixed on the top of the flow guide pipe (21); a plurality of flow guide holes (23) are provided at the bottom of the flow guide pipe (21); air guide pipes (24) are installed on both sides of the top of the flow guide pipe (21); and the ends of the air guide pipes (24) are connected to the reaction pool (22).

6. A VOC catalytic oxidation direct exhaust full pollutant removal range hood as claimed in claim 5, characterized in that: A second filter screen (25) is installed on the top of the reaction tank (22).

7. A VOC catalytic oxidation direct exhaust full pollutant removal range hood as claimed in claim 6, characterized in that: Two groups of suction fans (5) are installed inside the range hood body (1), and the angle between the two groups of suction fans (5) is 150 degrees. An air outlet (51) is provided on the top of the range hood body (1).

8. A VOC catalytic oxidation direct exhaust full pollutant removal range hood as claimed in claim 7, characterized in that: An air intake cover (53) is provided at the bottom of the range hood body (1), a control panel (54) is installed on one side of the air intake cover (53), and a plurality of lighting lamps (52) are provided at the bottom of the air intake cover (53).

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