Multi-layer filtering structure of range hood

Abstract

The utility model belongs to the technical field of range hoods, and particularly relates to a multi-layer filtering structure of a range hood, which comprises a range hood body, a smoke exhaust channel is fixedly mounted at the top of the range hood body, a smoke inlet mesh enclosure is arranged at the bottom of the smoke exhaust channel, and a fixing block is fixedly mounted on the inner wall of the smoke exhaust channel. A filter cartridge is arranged on the surface of the fixing block, a connecting block is fixedly mounted on the surface of the filter cartridge, and a screw is in threaded connection with the surface of the connecting block. Oil fume can be discharged through the filter cartridge, oil absorption cotton in the filter cartridge can filter oil dirt in the oil fume, the oil dirt in the oil fume can be intercepted, the oil fume is separated, after the oil fume is separated, the oil fume can be discharged through exhaust holes, and after the oil dirt sucked by the oil absorption cotton is condensed, the oil fume can be discharged through exhaust holes. Oil stains can drop into the collecting box through the filter cartridge to be collected, so that the oil stains contained in the oil fume can be effectively intercepted, the oil stains are prevented from being discharged to the outside, and the outside air environment is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of range hoods, and in particular relates to a multi-layer filtering structure of a range hood. Background Art

[0002] A range hood, also known as a smoke extractor, is a kitchen appliance that purifies the kitchen environment. It is installed above the kitchen stove, and can quickly extract the waste burned by the stove and the oil smoke generated during the cooking process that is harmful to the human body and discharge them outdoors. At the same time, the oil smoke is condensed and collected to reduce pollution, purify the air, and has the safety protection function of anti-toxicity and explosion-proof. The range hood needs to be cleaned regularly. Simple cleaning cannot handle the oil stains. Professional cleaning agents must be used to clean the range hood. According to the appearance, the range hood can be divided into three types: one is the Chinese style range hood, the second is the European style range hood, the third is the side suction type, and the fourth is the multimedia smart machine. It can also be divided into upper exhaust type, side exhaust type, and lower exhaust type. During the use of the range hood, in order to ensure that the discharged oil smoke meets the emission standards, the oil smoke discharged by the range hood needs to be filtered in multiple layers. However, during the use of the current range hood, since the filtration method is generally used to treat the oil smoke, the oil stains contained in the oil smoke cannot be effectively intercepted, which easily causes the oil stains to be discharged to the outside and affect the external air environment. Therefore, a multi-layer filtering structure of the range hood is needed. Utility Model Content

[0003] In order to solve the problems raised in the above-mentioned background technology, the utility model provides a multi-layer filtering structure of a range hood, which solves the problem that during the use of current range hoods, since the oil fumes are generally processed by filtering, the oil pollution contained in the oil fumes cannot be effectively intercepted, which easily leads to the discharge of oil pollution to the outside and affects the external air environment.

[0004] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a multi-layer filtering structure of a range hood, comprising a range hood body, a smoke exhaust channel fixedly installed on the top of the range hood body, a smoke inlet mesh cover arranged at the bottom of the smoke exhaust channel, a fixing block fixedly installed on the inner wall of the smoke exhaust channel, a filter cartridge arranged on the surface of the fixing block, a connecting block fixedly installed on the surface of the filter cartridge, a screw threadedly connected to the surface of the connecting block, oil-absorbing cotton arranged inside the filter cartridge, a screw cap threadedly connected to the bottom of the filter cartridge, an exhaust hole opened on the upper surface of the filter cartridge, a positioning block fixedly installed on the inner wall of the smoke exhaust channel, a collection box arranged inside the positioning block, a frame fixedly installed on the inner wall of the smoke exhaust channel, air guide holes arranged on the surface of the frame, a metal filter screen, a deodorizing filter screen and an activated carbon filter screen are respectively arranged on the inner wall of the frame.

[0005] Preferably, the connecting block is connected to the fixing block by screws, and a plurality of screws are provided.

[0006] Preferably, the metal filter is located below the deodorizing filter.

[0007] Preferably, a rubber pad is provided on the surface of the positioning block, and the positioning block is located below the filter cartridge.

[0008] Preferably, a smoke exhaust pipe is fixedly mounted on the back side of the range hood body, and a sealing gasket is provided inside the smoke exhaust pipe.

[0009] Preferably, a maintenance cover is provided on one side of the range hood body, a surface of the maintenance cover is threadedly connected with bolts, and the maintenance cover is connected to the smoke exhaust channel through the bolts.

[0010] Preferably, a usage mark is fixedly installed on the front of the smoke exhaust passage.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The oil smoke will be discharged through the filter cartridge. The oil-absorbing cotton in the filter cartridge can filter the oil in the oil smoke and intercept the oil in the oil smoke to separate the oil smoke. After separation, the smoke can be discharged through the exhaust hole. After the oil absorbed by the oil-absorbing cotton is condensed, the oil can drip through the filter cartridge into the collection box for collection. This can effectively intercept the oil contained in the oil smoke, prevent the oil from being discharged to the outside, and protect the external air environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 This is the first three-dimensional structural diagram of the utility model;

[0015] Figure 2 This is a second three-dimensional structural diagram of the utility model;

[0016] Figure 3 This is a three-dimensional cross-sectional view of the smoke exhaust channel of the utility model;

[0017] Figure 4 This is a three-dimensional structural diagram of the filter cartridge of the present utility model.

[0018] In the figure: 1. Range hood body; 2. Smoke exhaust channel; 3. Smoke inlet mesh cover; 4. Fixing block; 5. Filter cartridge; 6. Connecting block; 7. Screws; 8. Oil-absorbing cotton; 9. Screw cap; 10. Exhaust hole; 11. Positioning block; 12. Collecting box; 13. Frame; 14. Air guide hole; 15. Metal filter; 16. Deodorizing filter; 17. Activated carbon filter; 18. Exhaust pipe; 19. Maintenance cover; 20. Bolts; 21. Usage mark. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-4 The utility model provides the following technical solutions: a multi-layer filtering structure of a range hood, comprising a range hood body 1, a smoke exhaust channel 2 is fixedly installed on the top of the range hood body 1, a smoke inlet mesh cover 3 is arranged at the bottom of the smoke exhaust channel 2, a fixing block 4 is fixedly installed on the inner wall of the smoke exhaust channel 2, a filter cartridge 5 is arranged on the surface of the fixing block 4, a connecting block 6 is fixedly installed on the surface of the filter cartridge 5, a screw 7 is threadedly connected to the surface of the connecting block 6, an oil-absorbing cotton 8 is arranged inside the filter cartridge 5, a screw cover 9 is threadedly connected to the bottom of the filter cartridge 5, an exhaust hole 10 is opened on the upper surface of the filter cartridge 5, a positioning block 11 is fixedly installed on the inner wall of the smoke exhaust channel 2, a collecting box 12 is arranged inside the positioning block 11, a frame 13 is fixedly installed on the inner wall of the smoke exhaust channel 2, an air guide hole 14 is opened on the surface of the frame 13, and a metal filter screen 15, a deodorizing filter screen 16 and an activated carbon filter screen 17 are respectively arranged on the inner wall of the frame 13.

[0021] After the staff installs the range hood body 1, the range hood body 1 is started, and the oil smoke generated at the stove position can be absorbed and processed. After the oil is sucked into the exhaust channel 2, the oil smoke will be discharged through the filter cartridge 5. The oil-absorbing cotton 8 in the filter cartridge 5 can filter the oil stains in the oil smoke and intercept the oil stains in the oil smoke, so that the oil smoke is separated. After the oil smoke is separated, the smoke can be discharged through the exhaust hole 10. After the oil stains absorbed by the oil-absorbing cotton 8 are condensed, the oil stains can be dripped into the collection box 12 through the filter cartridge 5 for collection, so that the oil contained in the oil smoke can be separated. The oil smoke can be effectively intercepted to avoid the oil pollution from being discharged to the outside and to protect the outside air environment. After separation, the oil smoke can enter the frame 13 through the air guide hole 14. The metal filter 15, the deodorizing filter 16 and the activated carbon filter 17 in the frame 13 can play a multi-layer filtering effect on the oil smoke after filtering the oil pollution, and effectively filter the odor, dust and impurities contained in the oil smoke to prevent the oil smoke from being directly discharged and polluting the air environment. After filtering, the oil smoke can be discharged to the outside through the exhaust pipe 18. All electrical equipment in this device are powered by an external power supply.

[0022] In one aspect of this embodiment, the metal filter 15 located below the deodorizing filter 16 can filter the oily smoke to remove oil stains, so that the oily smoke gas changes its flow direction multiple times when passing through, thereby achieving the effect of effectively removing dust and impurities.

[0023] In one aspect of the present embodiment, after the staff opens the smoke exhaust channel 2 and loosens the screws 7 on the connecting block 6, the staff can remove the filter cartridge 5 from the fixing block 4. Anyway, the staff can install the filter cartridge 5 on the fixing block 4 through the screws 7, thereby facilitating the installation and fixation of the filter cartridge 5.

[0024] In one aspect of this embodiment, the smoke exhaust pipe 18 on the back side of the range hood body 1 is used to discharge the filtered smoke to the outside, and the sealing gasket can improve the sealing between the smoke exhaust pipe 18 and the external connecting pipe.

[0025] In one aspect of this embodiment, the rubber pad in the positioning block 11 is used to provide anti-slip protection for the placed collection box 12, so that the condensed oil in the filter cartridge 5 can accurately fall into the collection box 12 for collection.

[0026] In one aspect of this embodiment, a worker can observe the usage information of the range hood by using the mark 21 .

[0027] In one aspect of this embodiment, after the staff loosens the bolts 20 on the maintenance cover 19, the staff can remove the maintenance cover 19 from the range hood body 1, thereby opening the range hood body 1, making it convenient for the staff to perform maintenance and replacement inside the range hood body 1.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A multi-layer filter structure for a range hood, comprising a range hood body (1), characterized in that: A smoke exhaust passage (2) is fixedly mounted on the top of the range hood body (1), a smoke inlet screen (3) is arranged at the bottom of the smoke exhaust passage (2), a fixing block (4) is fixedly mounted on the inner wall of the smoke exhaust passage (2), a filter cartridge (5) is arranged on the surface of the fixing block (4), a connecting block (6) is fixedly mounted on the surface of the filter cartridge (5), a screw (7) is threadedly connected to the surface of the connecting block (6), an oil-absorbing cotton (8) is arranged inside the filter cartridge (5), and the bottom screw of the filter cartridge (5) is screwed to the bottom screw of the filter cartridge (5). The smoke exhaust passage (2) is connected to a screw cap (9) with a thread, an exhaust hole (10) is provided on the upper surface of the filter cartridge (5), a positioning block (11) is fixedly mounted on the inner wall of the smoke exhaust passage (2), a collecting box (12) is arranged inside the positioning block (11), a frame (13) is fixedly mounted on the inner wall of the smoke exhaust passage (2), an air guide hole (14) is provided on the surface of the frame (13), and a metal filter screen (15), a deodorizing filter screen (16) and an activated carbon filter screen (17) are respectively arranged on the inner wall of the frame (13).

2. The multi-layer filter structure of a range hood according to claim 1, characterized in that: The connecting block (6) is connected to the fixing block (4) via screws (7), and a plurality of screws (7) are provided.

3. The multi-layer filter structure of a range hood according to claim 1, characterized in that: The metal filter (15) is located below the deodorizing filter (16).

4. The multi-layer filter structure of a range hood according to claim 1, characterized in that: A rubber pad is provided on the surface of the positioning block (11), and the positioning block (11) is located below the filter cartridge (5).

5. The multi-layer filter structure of a range hood according to claim 1, characterized in that: A smoke exhaust pipe (18) is fixedly mounted on the back of the range hood body (1), and a sealing gasket is provided inside the smoke exhaust pipe (18).

6. The multi-layer filter structure of a range hood according to claim 1, characterized in that: A maintenance cover (19) is provided on one side of the range hood body (1), a surface of the maintenance cover (19) is threadedly connected with bolts (20), and the maintenance cover (19) is connected to the smoke exhaust passage (2) via the bolts (20).

7. The multi-layer filter structure of a range hood according to claim 1, characterized in that: A usage mark (21) is fixedly mounted on the front side of the smoke exhaust passage (2).

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