Filtering assembly and efficient filtering range hood

Abstract

The utility model relates to the technical field of range hoods, in particular to a filtering assembly and an efficient filtering range hood, the filtering assembly comprises an oil screen framework and a plurality of cambered flow guide strips, the flow guide strips are installed on the oil screen framework, the flow guide strips are arranged in two layers at intervals in the depth direction of the oil screen framework, and the inner cambered surfaces of the two layers of flow guide strips are oppositely arranged; a filtering channel is further formed between the inner arc faces of the two layers of flow guide strips, the flow guide strips on the outer layer and the flow guide strips on the inner layer are arranged in a staggered mode, the flow guide strips on the outer layer are arranged at intervals to form oil smoke inlets, the flow guide strips on the inner layer are arranged at intervals to form oil smoke outlets, and the oil smoke inlets and the oil smoke outlets are both communicated with the filtering channel. When the oil fume filtering device works, a large amount of oil dirt can be effectively adhered to the arc surfaces of the flow guide strips, and meanwhile, by matching with the position arrangement of the two layers of flow guide strips, the flowing speed of oil fume entering the filtering channel is higher than that in the prior art, the passing flow in unit time is larger, and the surface area for adhering the oil fume is larger.

Description

Technical Field

[0001] The utility model belongs to the technical field of range hoods, and in particular relates to a filter component and a range hood with high-efficiency filtration. Background Art

[0002] CN219473763U discloses a range hood fume filtration device comprising a front housing, a rear housing, and a first inner grid. The rear housing has a retaining plate on its bottom plate, forming a slot with the retaining plate and the bottom plate. A retaining block is provided on the bottom of the first inner grid, and an iron sheet is embedded in the top of the first inner grid. The first inner grid is inserted diagonally through the front opening of the rear housing, and the retaining block is inserted into the slot. The iron sheet in the first inner grid and a first magnet on the rear housing generate an attractive force, adsorbing the first inner grid to the rear housing. The rear housing is inserted through the rear opening of the front housing. The device also includes a second inner grid, the size of which is identical to the first inner grid. The second inner grid is inserted into the rear housing and tightly adheres to the first inner grid. Because the first inner grid is fixedly attached to the rear housing via a snap-fit ​​and magnetic attraction, the fume filtration device is easily assembled. Furthermore, the second inner grid can be configured within the rear housing to adjust the suction of the range hood.

[0003] However, in the existing technology, during the operation of the range hood, most of the oil is filtered in the air duct system, and only a small amount of oil is filtered at the first inner grid and other filter oil nets. The oil net has a low filtering efficiency for oil because the holes in the oil net are generally large, the flow rate of smoke passing through is slow, and the contact surface is small, which makes it difficult for oil to adhere. Utility Model Content

[0004] In response to the shortcomings of the prior art, the present invention provides, on one hand, a filter assembly, which includes an oil mesh frame and a plurality of curved guide strips, the guide strips being installed on the oil mesh frame, the guide strips being arranged in two layers at intervals along the depth direction of the oil mesh frame, and the inner curved surfaces of the two layers of guide strips being arranged relative to each other, a filter channel being formed between the inner curved surfaces of the two layers of guide strips, the guide strips of the outer layer being staggered with the guide strips of the inner layer, the guide strips of the outer layer being arranged at intervals to form an oil fume inlet, and the guide strips of the inner layer being arranged at intervals to form an oil fume outlet, and the oil fume inlet and the oil fume outlet being both connected to the filter channel.

[0005] Preferably, the guide strips of the outer layer are arranged in sequence at intervals to form multiple oil fume inlets, and the two sides of the arc surface of the guide strips located in this layer extend into the concave cavity of the adjacent guide strips in the inner layer; the guide strips of the inner layer are arranged in sequence at intervals to form multiple oil fume outlets, and the two sides of the arc surface of the guide strips located in this layer extend into the concave cavity of the adjacent guide strips in the inner layer.

[0006] Preferably, the guide strip is a semicircular arc surface, and both sides of the arc surface of the guide strip extend into the concave cavity of two adjacent guide strips of another layer, and the depth of the extension into the concave cavity is 0.3R to 0.7R, where R is the radius of the semicircular arc surface. The filter channel is wavy, and the oil fume inlet and the oil fume outlet are connected at the crest and trough respectively.

[0007] Preferably, the guide strip is provided with a buckle, and the guide strip is fixed to the oil net frame via the buckle.

[0008] Preferably, the clips are provided at the top and bottom of the guide bar, and a plurality of bosses are provided at the top and bottom of the oil net frame. The bosses are provided in pairs on the inner arc surface and the outer arc surface of the guide bar, and the distance between each pair of the bosses is adapted to the thickness of the guide bar. The bosses are used to limit the movement of the guide bar along the depth direction.

[0009] On the other hand, a high-efficiency filtration range hood is provided, which includes a range hood body and the filter assembly. A smoke collecting chamber for collecting oil smoke is provided at the lower end of the range hood body, the filter assembly is correspondingly arranged on one side of the smoke collecting chamber, and the oil fume inlet is connected to the smoke collecting chamber.

[0010] Preferably, the high-efficiency filtering range hood further comprises an oil removal component, which is fixed to the range hood body and arranged on the top of the filter component, and which removes oil from the surface of the guide strip.

[0011] Preferably, the oil removal component also includes two solvent boxes, two solenoid valves, a water pump and a nozzle. The input ends of the two solenoid valves are respectively connected to the output ends of the solvent boxes, and the output ends of the two solenoid valves are connected to the input end of the water pump. The two solenoid valves respectively transport water and oil removal solvent to the water pump, and the output end of the water pump is connected to the nozzle, and the nozzle removes oil on the surface of the guide strip.

[0012] Preferably, drainage holes are provided at both upper and lower ends of the oil net frame, the positions of the drainage holes correspond to the guide strips, and the cross-sectional shape of the drainage holes is similar to and larger than the cross-sectional shape of the guide strips; an oil cup is provided below the range hood body, and the oil cup is connected to the drainage hole at the lower end of the oil net frame.

[0013] Preferably, the smoke collection chamber is composed of a mounting horizontal plate extending along the front end and a mounting vertical plate extending along the lower end, the top of the mounting vertical plate is connected to the mounting horizontal plate, the oil removal component is mounted on the mounting horizontal plate, the filter component is mounted on the mounting vertical plate, the input end of the water pump is connected to the delivery nozzle through a hose, the output end of the nozzle is arranged corresponding to the leakage hole at the upper end of the oil net skeleton, the nozzle is rotatable, and the oil cup is located below the leakage hole for receiving the oil stains or oil removal solution flowing down from the guide strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and other purposes, features and advantages of the present invention will become more apparent through a more detailed description of the preferred embodiments of the present invention shown in the accompanying drawings. The same reference numerals indicate the same parts throughout the accompanying drawings, and the drawings are not intentionally scaled to actual size, but rather are intended to illustrate the subject matter of the present invention.

[0015] Figure 1 A schematic structural diagram of a range hood provided in an embodiment;

[0016] Figure 2 A schematic diagram of the structure of an oil removal component provided in an embodiment;

[0017] Figure 3 A schematic diagram of the structure of the filter assembly provided in the embodiment;

[0018] Figure 4 A schematic diagram of a partial structure of a filter assembly provided in an embodiment;

[0019] Figure 5 Another partial structural diagram of the filter assembly provided in the embodiment;

[0020] Figure 6 A schematic structural diagram of a guide strip provided in an embodiment;

[0021] Figure 7 This is a schematic diagram of oil smoke entering the filter assembly provided in the embodiment.

[0022] Figures and symbols: range hood body a1, oil cup a2, smoke collection chamber a3, installation horizontal plate a4, installation vertical plate a5, filter assembly b1, guide strip b2, oil net frame b3, buckle b4, boss b5, drain hole b6, oil fume outlet b7, oil fume inlet b8, filter channel b9, oil removal assembly c1, solvent box c2, solenoid valve c3, water pump c4, hose c5, nozzle c6. DETAILED DESCRIPTION

[0023] In order to facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.

[0024] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to the other element and integrated therewith, or there may be an intermediate element. The terms "mounted", "one end", "the other end" and similar expressions used herein are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the relevant listed items.

[0026] Please refer to Figures 1 to 7 On the one hand, a filter assembly b1 is provided. The filter assembly b1 includes an oil screen frame b3 and a plurality of curved guide strips b2. The guide strips b2 are mounted on the oil screen frame b3. The guide strips b2 are arranged in two layers along the depth direction of the oil screen frame b3. The inner curved surfaces of the two layers of guide strips b2 are arranged opposite each other. A filter channel b9 is formed between the inner curved surfaces of the two layers of guide strips b2. The outer layer of guide strips b2 are staggered with the inner layer of guide strips b2. The outer layer of guide strips b2 are spaced apart to form an oil fume inlet b8. The inner layer of guide strips b2 are spaced apart to form an oil fume outlet b7. Both the oil fume inlet b8 and the oil fume outlet b7 are connected to the filter channel b9. The depth direction may refer to the front-to-back direction of the filter assembly b1 when it is mounted on the range hood body a1.

[0027] Please refer to Figures 1 to 7 When the utility model is working, a large amount of oil pollution can be effectively adhered to the arc surface of the guide strip b2. At the same time, with the position setting of the two layers of guide strips b2, the flow rate of oil smoke entering the filter channel b9 is faster than that of the existing technology, the flow rate that can pass through per unit time is larger, and the surface area for adhering oil smoke is larger.

[0028] Please refer to Figures 3 to 7 In a preferred embodiment, the guide strips b2 of the outer layer are arranged in sequence at intervals to form a plurality of oil fume inlets b8, and the two sides of the arc surface of the guide strips b2 located in this layer extend into the concave cavity of the adjacent guide strips b2 of the inner layer; the guide strips b2 of the inner layer are arranged in sequence at intervals to form a plurality of oil fume outlets b7, and the two sides of the arc surface of the guide strips b2 located in this layer extend into the concave cavity of the adjacent guide strips b2 of the inner layer.

[0029] The above arrangement allows the filter channel b9 to be wavy, thereby improving the filtering efficiency.

[0030] Please refer to Figures 3 to 7In a preferred embodiment, the guide bar b2 is a semicircular arc surface, and both sides of the arc surface of the guide bar b2 extend into the concave cavity of two adjacent guide bars b2 of another layer, and the depth of the extension into the concave cavity is 0.3R to 0.7R, where R is the radius of the semicircular arc surface. The filter channel b9 is wavy, and the oil fume inlet b8 and the oil fume outlet b7 are connected at the crest and trough of the wave, respectively.

[0031] Through the above-mentioned arrangement, the oil smoke flow rate entering the filter channel b9 is faster; at the same effective filtration thickness, the flow rate is larger than that of the mesh filter oil net; at the same effective filtration thickness and at the same time, the present application can make the oil smoke form multiple contacts on the outer arc surface of the guide strip b2 and the arc surface inside the filter channel b9, that is, the oil smoke can continuously impact and contact the guide strip b2, and the oil smoke continuously adheres to the guide strip b2 to form efficient filtration.

[0032] Please refer to Figures 4 to 6 In a preferred embodiment, the guide bar b2 is provided with a buckle b4, and the guide bar b2 is fixed to the oil net frame b3 through the buckle b4.

[0033] The snap-fit ​​b4 makes it easier for the guide strip b2 to be formed and installed on the oil screen frame b3.

[0034] In a preferred embodiment, buckles b4 are provided on the top and bottom of the guide bar b2, and multiple bosses b5 are provided on the top and bottom of the oil net skeleton b3. The bosses b5 are provided in pairs on the inner arc surface and the outer arc surface of the guide bar b2, and the distance between each pair of bosses b5 is adapted to the thickness of the guide bar b2. The bosses b5 are used to limit the movement of the guide bar b2 along the depth direction.

[0035] Please refer to Figure 3 and Figure 4 On the oil screen frame b3, three pairs of bosses b5 are typically positioned at the top and bottom ends of each guide bar b2. These bosses b5 are located at both ends and in the middle of the curved surface. The distance between the bosses b5 is equal to the thickness of the guide bar b2, or in other words, the distance between the inner and outer curved surfaces. The bosses b5 are positioned snugly against the guide bar b2, sandwiching it in place. This prevents movement during installation and the risk of contact with the edges of the drain holes b6, ensuring clearance on both sides of the guide bar b2.

[0036] Please refer to Figures 1 to 7 On the other hand, a high-efficiency filtration range hood is provided, which includes a range hood body a1 and the above-mentioned filter assembly b1. A smoke collecting chamber a3 for collecting oil smoke is provided at the lower end of the range hood body a1. The filter assembly b1 is correspondingly arranged on one side of the smoke collecting chamber a3, and the oil smoke inlet b8 is connected to the smoke collecting chamber a3.

[0037] Please refer to Figures 1 to 3In a preferred embodiment, the range hood with high efficiency filtration further includes an oil removal component c1, which is fixed to the range hood body a1 and arranged on the top of the filter component b1. The oil removal component c1 removes oil from the surface of the guide bar b2.

[0038] The above-mentioned oil removal component c1 can ensure that the surface of the guide strip b2 is clean, and at the same time, the service life of the oil removal component c1 can be guaranteed and the filtering efficiency can be guaranteed during long-term use.

[0039] Please refer to Figures 1 to 3 In a preferred embodiment, the oil removal component also includes two solvent boxes c2, two solenoid valves c3, a water pump c4 and a nozzle c6. The input ends of the two solenoid valves c3 are respectively connected to the output ends of the solvent box c2, and the output ends of the two solenoid valves c3 are connected to the input end of the water pump c4. The two solenoid valves c3 respectively transport water and oil removal solvent to the water pump c4. The output end of the water pump c4 is connected to the nozzle c6, and the nozzle c6 removes the oil on the surface of the guide bar b2.

[0040] One of the solvent boxes c2 is used to hold clean water, and the other is used to hold degreasing solvent. The two are mixed by the water pump c4 to form a solution for cleaning oil stains. The solvent box c2, the two solenoid valves c3, the water pump c4 and the nozzle c6 are also connected by several pipes.

[0041] Please refer to Figures 4 and 5 In a preferred embodiment, drainage holes b6 are provided at the upper and lower ends of the oil net frame b3. The position of the drainage hole b6 corresponds to the guide bar b2. The cross-sectional shape of the drainage hole b6 is similar to and larger than the cross-sectional shape of the guide bar b2. An oil cup a2 is provided below the range hood body a1, and the oil cup a2 is connected to the drainage hole b6 at the lower end of the oil net frame b3.

[0042] The arrangement of the drain hole b6 and the oil cup a2 facilitates the oil cup a2 to collect the oil stains flowing down from the guide strip b2 during operation and facilitates the collection of cleaned waste water during cleaning.

[0043] Please refer to Figures 1 to 3 In a preferred embodiment, the smoke collecting chamber a3 is composed of a mounting horizontal plate a4 extending along the front end and a mounting vertical plate a5 extending along the lower end. The top of the mounting vertical plate a5 is connected to the mounting horizontal plate a4. The oil removal component is installed on the mounting horizontal plate a4, and the filter component b1 is installed on the mounting vertical plate a5. The input end of the water pump c4 is connected to the delivery nozzle c6 through the hose c5. The output end of the nozzle c6 is arranged corresponding to the leakage hole b6 at the upper end of the oil net skeleton b3. The nozzle c6 is rotatable. The oil cup a2 is located below the leakage hole b6 and is used to receive the oil stains or oil removal solution flowing down from the guide bar b2.

[0044] Please refer to Figures 1 to 3The smoke collecting chamber a3 is provided to collect the oil smoke at the lower end of the range hood, and on the other hand, it is beneficial for the filter assembly b1 to filter the oil smoke. The installation of the horizontal plate a4 and the vertical plate a5 facilitates the installation of the filter assembly b1 and the oil removal assembly c1.

[0045] like Figures 1 to 7 As shown, the front of the range hood is equipped with a filter assembly b1, or oil screen. Filter assembly b1 comprises an external oil screen frame b3 and internal guide strips b2. The guide strips b2 are fixed to the oil screen frame b3. The guide strips b2 have an arc-shaped cross-section and are installed within the frame at equal intervals. There are two rows of guide strips, with the convex surface of the front row facing the front of the range hood and the concave surface of the rear row facing the front of the range hood. The two rows of guide strips b2 are staggered. When oil smoke strikes the first row of guide strips b2, it is split in two along the convex surface of the first row and flows through the gap between the first row of guide strips b2, i.e., the oil smoke outlet b7, into the filter channel b9. The oil smoke then strikes the concave surface of the second row of guide strips b2 and is then split in two along the concave surface of the second row, flowing through the gap between the second and first rows of guide strips b2, i.e., into the filter channel b9. Generally, oil smoke first hits the concave surface of the first row, and after converging, it finally flows out through the gaps in the guide strips b2 of the second row. The top and bottom of the guide strip b2 are each secured to the oil screen frame b3 with clips b4. Drain holes b6 are provided on the upper and lower surfaces of the oil screen frame b3. The positions of the drain holes b6 correspond one-to-one with the guide strips b2. The shape of the drain holes b6 is similar to the cross-section of the guide strip b2, but they are slightly larger to allow oil stains and detergent to flow into the oil cup a2. At the same time, there are three pairs of fixed bosses b5 on the drain holes b6. The bosses b5 are tightly attached to the guide strip b2, sandwiching it in the middle. This prevents the risk of the guide strip b2 shaking during installation and contacting the edge of the drain hole b6, ensuring that there is a gap on both sides of the guide strip b2. Inside the range hood, two solvent cartridges (C2) are installed: one for cleaning solution and one for water. These cartridges are connected to two solenoid valves (C3) via hoses (C5). Solenoid valves (C3) are connected to a pump via hoses (C5), which in turn are connected to spray nozzles (C6) via hoses (C5). Spray nozzles (C6) are located directly above the oil screen, with their outlet pointing downward, aligned with the upper surface of the screen. Spray nozzles (C6) can rotate, with their axis of rotation perpendicular to the front panel of the range hood.

[0046] When the range hood is operating normally, oil smoke continuously impacts and contacts the oil screen's guide strip b2 as it passes through it, clinging to it. When grease accumulates to a certain level, it slides down along guide strip b2 and eventually flows into oil cup a2. After a period of use, the system automatically activates the cleaning function, and water pump c4 begins operating. At this time, solenoid valve c3, which controls the detergent, remains open. Water pump c4 extracts the detergent, converting it into foam, which is then sprayed out of nozzle c6. Spray nozzle c6 rotates, evenly coating the curved surface of oil screen's guide strip b2. The foam flows downward from drain hole b6, evenly covering the entire guide strip b2, dissolving and absorbing the oil, before exiting the oil screen through drain hole b6 below. Finally, the solenoid valve C3 that controls the detergent remains closed, and the solenoid valve C3 that controls the water is opened. The water pump C4 draws water and evenly covers the oil net, and flows downward from the drain hole B6, flushing the remaining foam on the oil net and finally flowing to the oil cup A2.

[0047] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0048] In the description of this specification, the description with reference to the terms "preferred embodiment", "further embodiment", "other embodiments" or "specific example" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0049] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A filter assembly, characterized in that: The filter assembly includes an oil mesh frame and a plurality of curved guide strips, the guide strips being installed on the oil mesh frame, the guide strips being arranged in two layers at intervals along the depth direction of the oil mesh frame, and the inner curved surfaces of the two layers of guide strips being arranged opposite to each other, a filter channel being formed between the inner curved surfaces of the two layers of guide strips, the guide strips of the outer layer being staggered with the guide strips of the inner layer, the guide strips of the outer layer being arranged at intervals to form an oil fume inlet, and the guide strips of the inner layer being arranged at intervals to form an oil fume outlet, and the oil fume inlet and the oil fume outlet being both connected to the filter channel.

2. The filter assembly according to claim 1, wherein The guide strips of the outer layer are arranged in sequence at intervals to form multiple oil fume inlets, and the two sides of the arc surface of the guide strips located in this layer extend into the concave cavity of the adjacent guide strips in the inner layer; the guide strips of the inner layer are arranged in sequence at intervals to form multiple oil fume outlets, and the two sides of the arc surface of the guide strips located in this layer extend into the concave cavity of the adjacent guide strips in the inner layer.

3. The filter assembly according to claim 2, wherein The guide strip is a semicircular arc surface, and both sides of the arc surface of the guide strip extend into the concave cavity of two adjacent guide strips of another layer, and the depth of the extension into the concave cavity is 0.3R to 0.7R, where R is the radius of the semicircular arc surface. The filter channel is wavy, and the oil fume inlet and the oil fume outlet are connected at the crest and trough of the wave respectively.

4. The filter assembly according to claim 1, wherein The guide strip is provided with a buckle, and the guide strip is fixed to the oil net frame through the buckle.

5. The filter assembly according to claim 4, wherein The clips are provided at the top and bottom of the guide bar, and a plurality of bosses are provided at the top and bottom of the oil net frame. The bosses are provided in pairs on the inner arc surface and the outer arc surface of the guide bar, and the distance between each pair of the bosses is adapted to the thickness of the guide bar. The bosses are used to limit the movement of the guide bar along the depth direction.

6. A high-efficiency filtration range hood, characterized in that: The high-efficiency filtration range hood includes a range hood body and the filter assembly as claimed in claim 1. A smoke collecting chamber for collecting oil smoke is provided at the lower end of the range hood body. The filter assembly is correspondingly arranged on one side of the smoke collecting chamber, and the oil smoke inlet is connected to the smoke collecting chamber.

7. The high-efficiency filtering range hood according to claim 6, characterized in that: The high-efficiency filtering range hood also includes an oil removal component, which is fixed to the range hood body and arranged on the top of the filter component. The oil removal component removes oil from the surface of the guide strip.

8. The high-efficiency filtering range hood according to claim 7, characterized in that: The oil removal component also includes two solvent boxes, two solenoid valves, a water pump and a nozzle. The input ends of the two solenoid valves are respectively connected to the output ends of the solvent boxes, and the output ends of the two solenoid valves are connected to the input end of the water pump. The two solenoid valves respectively transport water and oil removal solvent to the water pump, and the output end of the water pump is connected to the nozzle. The nozzle removes oil on the surface of the guide strip.

9. The high-efficiency filtering range hood according to claim 8, characterized in that: Drainage holes are provided at the upper and lower ends of the oil net frame. The positions of the drainage holes correspond to the guide strips. The cross-sectional shape of the drainage holes is similar to and larger than the cross-sectional shape of the guide strips. An oil cup is provided under the range hood body, and the oil cup is connected to the drainage hole at the lower end of the oil net frame.

10. The high-efficiency filtering range hood according to claim 9, characterized in that: The smoke collecting chamber is composed of a mounting horizontal plate extending along the front end and a mounting vertical plate extending along the lower end. The top of the mounting vertical plate is connected to the mounting horizontal plate. The oil removal component is mounted on the mounting horizontal plate. The filter component is mounted on the mounting vertical plate. The input end of the water pump is connected to the delivery nozzle through a hose. The output end of the nozzle is arranged corresponding to the leakage hole at the upper end of the oil net skeleton. The nozzle is rotatable. The oil cup is located below the leakage hole and is used to receive oil stains or oil removal solution flowing down from the guide strip.

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