A range hood and fume filter assembly

Abstract

This utility model discloses a range hood and a fume filtration assembly, comprising: a fume hood, on both sides of which are configured as fresh air perforated plates, and the overall structure of the fume hood is configured as a cuboid structure; a light-blocking plate is provided inside the fume hood, the bottom and top of which are respectively connected to the fresh air perforated plates and the fume hood, and a cavity is formed between the fume hood, the light-blocking plate and the fresh air perforated plate. This utility model has the following beneficial effects: through the light-blocking plate and the fresh air perforated plate, in conjunction with the fume hood, the fresh air flange and the fresh air fan can draw in external fumes, allowing the external fumes to enter the cavity, where they are filtered by the filtration assembly inside the cavity, and then drawn out and discharged through the exhaust flange, so that the cavity forms a circulation channel, the drawn-in fumes can be guided to flow quickly, and small vortices will not easily form, reducing wind resistance and quickly expelling fumes.

Description

Technical Field

[0001] This utility model relates to the field of range hoods, and in particular to a range hood and a fume filtration assembly. Background Technology

[0002] In the kitchens of large hotels and restaurants, commercial range hoods are generally required for removing cooking fumes. Among the key components of commercial range hoods, there is usually a fume filter. Traditional fume filters are made of thin, bent sheets, which are simple to manufacture and inexpensive. However, the inner side of the bent sheet can easily cause small vortices to form in the fumes, which is not conducive to separating large grease molecules through centrifugal force. This ultimately leads to problems such as high air resistance and poor filtration effect. Utility Model Content

[0003] The purpose of this utility model is to provide a range hood and a fume filter assembly to solve the problem that current filter assemblies are not convenient for expelling fumes when filtering them.

[0004] To achieve this objective, the present invention adopts the following technical solution: In a first aspect, a range hood and a fume filtration assembly are provided, comprising: The smoke hood has fresh air perforated plates on both sides, and the overall structure of the smoke hood is a cuboid structure. The smoke hood has a light-blocking plate inside. The bottom and top of the light-blocking plate are connected to the fresh air perforation plate and the smoke hood, respectively. A cavity is formed between the smoke hood, the light-blocking plate and the fresh air perforation plate. A filter assembly is installed inside the cavity.

[0005] Furthermore, the filter assembly includes an oil mesh, which is hollow inside and has openings on both sides. An air outlet is provided at the top of the oil mesh, and the air outlet is connected to the interior of the oil mesh.

[0006] Furthermore, the filter assembly also includes two filter screens disposed inside the oil mesh, with the two filter screens located on opposite sides inside the oil mesh.

[0007] Furthermore, the oil filter is provided with two oil-absorbing elements inside, which are respectively located on the side of the two filter screens that are close to each other. The oil-absorbing elements are provided with multiple ventilation holes laterally inside.

[0008] Furthermore, an oil guide is vertically arranged inside the oil-absorbing component, and the oil guide passes vertically through multiple ventilation holes.

[0009] Furthermore, the bottom of the oil mesh is provided with an oil receiving box, the top of the oil receiving box has an open structure and communicates with the inside of the oil mesh, and the bottom of the oil guide extends into the inside of the oil receiving box.

[0010] Furthermore, the bottom of the oil mesh is provided with slots at the positions on both sides of the oil receiving box. A horizontally arranged guide rod is fixed to the inner wall of the slot. A clamping block is sleeved on the outside of the guide rod. One side of the clamping block is in contact with the oil receiving box. A spring is connected between the clamping block and the guide rod.

[0011] Secondly, this utility model also proposes a range hood, including an oil fume filter assembly of any of the above-mentioned solutions, and further including an exhaust flange disposed on the top of the hood, wherein the exhaust flange is connected to the cavity, and the output end of the exhaust flange is connected to the filter assembly.

[0012] Furthermore, the top of the fume hood is provided with a fresh air flange, and a fresh air fan is installed inside the cavity. The fresh air fan and the fresh air flange are electrically connected.

[0013] Furthermore, a lamp holder is fixed to the top of the inner wall of the cavity, and multiple ultraviolet lamps are installed on the lamp holder. A lighting lamp is installed on the top of the fume hood.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. By using a light-blocking plate and a fresh air perforated plate, in conjunction with a fume hood, the fresh air flange and fresh air fan can draw in external oil fumes, allowing them to enter the cavity and be filtered by the filter components inside the cavity. Then, they are drawn out and discharged through the exhaust flange, creating a circulation channel in the cavity. The drawn-in oil fumes are guided to flow quickly, preventing the formation of small vortices, reducing wind resistance, and quickly expelling the oil fumes.

[0015] 2. Through the fume hood and light shield, in conjunction with the filter components, the oil fumes are filtered by the filter screen as they pass through the filter components. The oil fumes are then discharged from the air outlet through the oil suction component, while the oil and grease in the oil fumes are absorbed by the oil suction component and then guided by the oil guide component, so that the oil and grease enter the inside of the oil collection box and are collected. After the oil and grease have been collected, the oil collection box can be removed, the oil and grease can be cleaned, and the oil collection box can be used to collect oil and grease again. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0018] Figure 1 This is a three-dimensional sectional view of the whole structure; Figure 2 This is a three-dimensional schematic diagram of the whole system; Figure 3 This is a cross-sectional view of the filter assembly; Figure 4 for Figure 3 Enlarged diagram of point A in the middle.

[0019] Illustrations: 1. Fume hood; 101. Fresh air perforated plate; 2. Fresh air flange; 201. Fresh air fan; 3. Lamp holder; 4. Ultraviolet lamp; 5. Light shield; 6. Oil filter; 601. Air outlet; 7. Exhaust flange; 8. Lighting lamp; 9. Filter screen; 10. Oil suction component; 1001. Ventilation hole; 11. Oil guide component; 12. Oil collection box; 13. Guide rod; 14. Clamping block; 15. Spring. Detailed Implementation

[0020] To make the utility model's objectives, features, and advantages more apparent and understandable, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0021] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component centrally located at the same time.

[0022] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] This utility model embodiment provides a range hood and a fume filtration assembly. Please refer to [link / reference]. Figures 1-3 It includes: a smoke hood 1, with fresh air perforation plates 101 on both sides of the smoke hood 1, and the overall structure of the smoke hood 1 is a cuboid structure; a light-blocking plate 5 is provided inside the smoke hood 1, with the bottom and top of the light-blocking plate 5 connected to the fresh air perforation plates 101 and the smoke hood 1 respectively, and a cavity is formed between the smoke hood 1, the light-blocking plate 5 and the fresh air perforation plates 101, and a filter assembly is provided inside the cavity.

[0024] like Figures 1-3 As shown, the outer shell of the range hood 1, the inclined baffle plate 5, and the fresh air perforation plate 101 form a cavity. The fresh air flange 2 and the exhaust flange 7 are located at both ends of the cavity, allowing the fumes to be drawn in from the fresh air flange 2, then flow through the cavity to the exhaust flange 7, and then be drawn out by the exhaust flange 7. When the range hood is working, the introduction of fresh air can improve the air circulation in the kitchen. On the one hand, it helps to replenish the air lost due to the removal of fumes and maintain the air pressure balance in the kitchen; on the other hand, the flow of fresh air can assist in the exhaust of fumes, making the fumes be drawn away more smoothly.

[0025] The rectangular fume hood 1 has a large coverage area, which can capture more oil fumes generated during cooking. Its regular shape makes it easy to install and match with other kitchen equipment, while also providing ample space for the layout of internal components.

[0026] The light-blocking plate 5 serves as an isolation and support. It connects with the fresh air perforated plate 101 and the fume hood 1 to form a cavity, providing an independent installation space for the filter assembly, allowing the filter assembly to be stably installed within it. At the same time, the light-blocking plate 5 can block light from directly shining on certain parts of the filter assembly (such as the ultraviolet lamp 4 that may be installed later), avoiding adverse effects of light on the performance of the filter assembly, or protecting the user from possible light damage.

[0027] The filter assembly is the core component of the range hood. Its main function is to filter the fumes that enter the hood 1. Through a series of filtration methods, it separates harmful substances such as grease and particulate matter from the fumes, making the exhaust gas cleaner and reducing environmental pollution.

[0028] Operation process: When the user turns on the range hood, the exhaust device starts working, creating a negative pressure area inside the range hood 1. The cooking fumes generated during cooking are drawn into the range hood 1 under the action of negative pressure. At the same time, due to the design of the fresh air perforation plates 101 on both sides of the range hood 1, fresh air enters the range hood 1 through the fresh air perforation plates 101, mixes with the cooking fumes, and flows into the range hood 1 together. During the flow, the cooking fumes first enter the cavity formed by the range hood 1, the light-blocking plate 5, and the fresh air perforation plates 101. The filter components in the cavity begin to function, performing multi-stage filtration of the cooking fumes. For example, the oil mesh 6 first intercepts larger particles of grease and impurities, the filter mesh 9 further filters finer particles, the oil-absorbing component 10 absorbs the oil components in the cooking fumes, and the oil-guiding component 11 guides the absorbed grease to the oil collection box 12, etc. The relatively clean gas after filtration is discharged outdoors through the exhaust flange 7, thus completing the entire process of cooking fume filtration and emission.

[0029] Please continue reading. Figures 1-3 The filter assembly includes an oil mesh 6, which is hollow inside and has openings on both sides. An air outlet 601 is provided on the top of the oil mesh 6, and the air outlet 601 is connected to the inside of the oil mesh 6. The filter assembly also includes two filter screens 9 inside the oil mesh 6, which are located on both sides inside the oil mesh 6. Two oil suction components 10 are provided inside the oil mesh 6, which are located on the side of the two filter screens 9 that are close to each other. Multiple ventilation holes 1001 are opened horizontally inside the oil suction component 10, and an oil guide component 11 is vertically arranged inside the oil suction component 10, which passes vertically through the multiple ventilation holes 1001.

[0030] like Figures 1-3 As shown, the hollow structure provides space for the passage of oil fumes, and the openings on both sides allow the oil fumes to enter the interior of the oil mesh 6 from both sides, forming a flow channel for the oil fumes, which is the basic structure for the oil fumes to enter the subsequent filtration stage.

[0031] The air outlet 601 is the discharge channel for the relatively clean gas after being filtered by the oil filter 6. It guides the gas processed inside the oil filter 6 to the subsequent exhaust system, so that the gas can be smoothly discharged outdoors.

[0032] The filter screen 9 is an important part of the oil fume filtration. It can intercept larger particulate impurities and some grease in the oil fume. The filter screen 9 is set on both sides to perform double filtration of the oil fume entering the oil filter 6, thereby improving the filtration effect.

[0033] The oil-absorbing component 10 can further absorb the grease components in the fumes. By placing it on one side of the two filters 9 that are close to each other, it can more effectively absorb the residual grease after the fumes have passed through the first filtration, thereby improving the grease removal rate.

[0034] The ventilation hole 1001 ensures that the oil fumes can pass smoothly through the oil suction component 10, absorbing the grease without affecting the airflow, so that the oil fumes can fully contact the oil suction component 10 when passing through it, thus improving the oil suction effect.

[0035] The oil guide 11 can guide the grease absorbed by the oil absorber 10 to the bottom, preventing the grease from accumulating inside the oil absorber 10. The design of vertically passing through the ventilation hole 1001 allows the oil guide 11 to better contact the oil absorber 10 and guide the absorbed grease away in time.

[0036] Please see Figure 1 , Figure 3 and Figure 4 The bottom of the oil mesh 6 is provided with an oil receiving box 12. The top of the oil receiving box 12 is open and communicates with the inside of the oil mesh 6. The bottom of the oil guide 11 extends into the inside of the oil receiving box 12. The bottom of the oil mesh 6 is provided with slots on both sides of the oil receiving box 12. A horizontally arranged guide rod 13 is fixed on the inner wall of the slot. A clamping block 14 is sleeved on the outside of the guide rod 13. One side of the clamping block 14 is in contact with the oil receiving box 12. A spring 15 is connected between the clamping block 14 and the guide rod 13.

[0037] like Figure 1 , Figure 3 and Figure 4 As shown, the oil collection box 12 is a container used to collect grease and impurities generated during the fume filtration process. When the range hood is working, the grease and some impurities are separated when the fumes pass through the filter components. The oil collection box 12 provides a centralized storage space for these substances.

[0038] The open structure allows the grease and impurities filtered from inside the oil mesh 6 to flow smoothly into the oil collection box 12, and the connection with the inside of the oil mesh 6 ensures the smooth flow of oil and forms a continuous oil collection channel.

[0039] The main function of the oil guide component 11 is to guide the grease absorbed by the oil absorber 10 down and extend its bottom into the oil receiving box 12, so that the grease can be directly introduced into the oil receiving box 12, thus preventing the grease from dripping onto other parts of the bottom of the oil mesh 6 during the oil guiding process.

[0040] The slots provide space for the subsequent installation of components such as guide rods 13 and clamps 14, and are the basic setting for the entire oil receiving box 12 fixing structure. By opening slots in specific positions, the fixing device of the oil receiving box 12 can be reasonably arranged without affecting the overall structure and other functions of the oil mesh 6.

[0041] The guide rod 13 provides a sliding track for the clamping block 14, enabling the clamping block 14 to move in the horizontal direction. It is a guide component for the clamping and releasing actions of the clamping block 14, ensuring that the movement of the clamping block 14 is stable and accurate.

[0042] The clamp 14 is a component used to fix the oil receiving box 12 directly. By fitting against the oil receiving box 12, the clamp 14 can apply pressure to the oil receiving box 12 under the action of the spring 15, and fix it firmly to the bottom of the oil mesh 6.

[0043] Spring 15 provides elastic force to clamping block 14, ensuring that clamping block 14 remains firmly clamped to oil receiving box 12. When installing oil receiving box 12, pull clamping block 14 outward, insert oil receiving box 12, and then release clamping block 14. The elastic force of spring 15 will cause clamping block 14 to automatically reset and clamp oil receiving box 12. When removing oil receiving box 12, simply pull out clamping block 14 to remove oil receiving box 12.

[0044] In another embodiment, please refer to Figure 1 and Figure 2 This utility model also proposes a range hood, which includes an exhaust flange 7 located on the top of the hood 1. The exhaust flange 7 is connected to the cavity, and the output end of the exhaust flange 7 is connected to the filter assembly. A fresh air flange 2 is provided on the top of the hood 1. A fresh air fan 201 is installed inside the cavity. The fresh air fan 201 and the fresh air flange 2 are electrically connected. A lamp holder 3 is fixed on the top of the inner wall of the cavity. Multiple ultraviolet lamps 4 are installed on the lamp holder 3. A lighting lamp 8 is installed on the top of the hood 1.

[0045] like Figure 1 and Figure 2 As shown, the exhaust flange 7 is the connecting component between the range hood and the external exhaust system (such as the exhaust duct). It provides a standardized interface for the exhaust of fumes. This connection design forms a flow channel for fumes. The fumes first enter the cavity inside the hood 1, then are filtered by the filter assembly, and finally are discharged to the outside through the exhaust flange 7.

[0046] The fresh air flange 2 is a connecting component between the range hood and an external fresh air supply system (such as a fresh air duct), providing an interface for introducing fresh air.

[0047] The fresh air blower 201 is the power source for generating fresh air flow. It can draw fresh air introduced from the outside through the fresh air flange 2 into the cavity and transport it in a certain direction and speed.

[0048] The fresh air fan 201 and the fresh air flange 2 are electrically connected. This electrical connection allows the fresh air fan 201 to be controlled by an external control system as needed, enabling functions such as starting, stopping, and adjusting the airflow speed of the fresh air fan 201.

[0049] The lamp holder 3 provides a base for fixing and installing the UV lamp 4, ensuring that the UV lamp 4 can be stably installed in a suitable position inside the cavity.

[0050] The UV lamp 4 emits ultraviolet light to sterilize and disinfect the air inside the range hood and the surface of the filter components, decompose some harmful substances in the fumes, and reduce odor.

[0051] Light 8 provides illumination for the kitchen cooking area, allowing users to clearly observe ingredients and cooking processes.

[0052] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An oil fume filter assembly for a range hood, characterized in that, include: The smoke hood (1) has fresh air perforated plates (101) on both sides and the overall structure of the smoke hood (1) is a cuboid structure. The smoke hood (1) is provided with a light-blocking plate (5) inside. The bottom and top of the light-blocking plate (5) are connected to the fresh air perforation plate (101) and the smoke hood (1) respectively. A cavity is formed between the smoke hood (1), the light-blocking plate (5) and the fresh air perforation plate (101). A filter assembly is provided inside the cavity.

2. The oil fume filtering assembly of claim 1, wherein, The filter assembly includes an oil mesh (6), which is hollow inside and has open structures on both sides. An air outlet (601) is provided on the top of the oil mesh (6), and the air outlet (601) is connected to the inside of the oil mesh (6).

3. The oil fume filtering assembly of claim 2, wherein, The filter assembly also includes two filter screens (9) disposed inside the oil mesh (6), with the two filter screens (9) located on both sides inside the oil mesh (6).

4. The oil fume filtering assembly of claim 3, wherein, The oil filter (6) is provided with two oil-absorbing elements (10) inside. The two oil-absorbing elements (10) are respectively located on the side of the two filter screens (9) that are close to each other. The oil-absorbing elements (10) are provided with multiple ventilation holes (1001) in the horizontal direction inside.

5. A fume filtering assembly for a range hood as defined in claim 4, wherein, The oil-absorbing component (10) has an oil-guiding component (11) vertically arranged inside, and the oil-guiding component (11) vertically passes through multiple ventilation holes (1001).

6. A fume filtering assembly for a range hood as defined in claim 5, wherein, The bottom of the oil mesh (6) is provided with an oil receiving box (12), the top of the oil receiving box (12) is open and communicates with the inside of the oil mesh (6), and the bottom of the oil guide (11) extends into the inside of the oil receiving box (12).

7. A fume filtering assembly of a range hood according to claim 6, wherein, The bottom of the oil mesh (6) is provided with a slot at the position on both sides of the oil receiving box (12). A horizontally arranged guide rod (13) is fixed on the inner wall of the slot. A clamping block (14) is sleeved on the outside of the guide rod (13). One side of the clamping block (14) is in contact with the oil receiving box (12). A spring (15) is connected between the clamping block (14) and the guide rod (13).

8. A range hood characterized by The range hood includes an oil fume filter assembly as described in any one of claims 1-7, and further includes an exhaust flange (7) disposed on the top of the hood (1), the exhaust flange (7) communicating with the cavity, and the output end of the exhaust flange (7) communicating with the filter assembly.

9. A range hood according to claim 8, characterized in that The top of the fume hood (1) is provided with a fresh air flange (2), and a fresh air fan (201) is installed inside the cavity. The fresh air fan (201) and the fresh air flange (2) are electrically connected.

10. The range hood according to claim 8, wherein A lamp holder (3) is fixed to the top of the inner wall of the cavity, and multiple ultraviolet lamps (4) are installed on the lamp holder (3). A lighting lamp (8) is installed on the top of the smoke hood (1).

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