A range hood

Abstract

The utility model belongs to kitchen appliance technical field, especially is a kind of range hood, including smoke collecting hood, the wind inlet box, purification box and centrifugal fan box of assembled combination are installed on the upper portion of smoke collecting hood, the front surface of smoke collecting hood is equipped with range hood touch screen, the inside of smoke collecting hood is equipped with detachable nickel screen primary efficiency filter and flow guide, and the flow guide is below nickel screen primary efficiency filter;The flow guide installed in the smoke collecting hood is below nickel screen primary efficiency filter, can guide the oil fume gas below the smoke collecting hood to disperse to the area below nickel screen primary efficiency filter, avoid the local partial of oil fume concentrated impact filter piece, make the filter area of nickel screen primary efficiency filter be fully utilized.This design not only improves the preliminary filtering effect of oil fume, reduces the situation that unfiltered oil fume directly enters subsequent component, but also can reduce the probability of filter piece local blockage, prolong its effective use cycle.

Description

Technical Field

[0001] This utility model belongs to the field of kitchen appliance technology, specifically relating to a range hood. Background Technology

[0002] In the kitchen environment, the range hood is a key device for removing cooking fumes, and its performance directly affects kitchen air quality and user experience. Currently, traditional range hoods on the market still have some problems that urgently need to be solved in terms of fume treatment and operation.

[0003] In terms of oil fume filtration, the internal filtration structure design of existing range hoods is often unreasonable and lacks effective flow guiding components. As a result, the oil fumes cannot be dispersed before entering the filter element and tend to concentrate and impact local areas of the filter element. This not only reduces the overall utilization efficiency of the filter element, but also makes the local filtration load too large, which can easily lead to blockage and affect the filtration effect and service life.

[0004] In terms of noise control, the noise from a range hood mainly comes from the high-speed operation of the centrifugal fan. Traditional range hoods typically use a standard elbow structure at the air outlet, which cannot effectively reduce the noise generated by the fan. The high-speed airflow generates turbulence noise when passing through the elbow, which, combined with the mechanical noise of the fan itself, results in a relatively high overall operating noise level for the range hood. This can cause significant auditory disturbance to users, especially during prolonged cooking, and affect the comfort of kitchen operations.

[0005] In addition, the overall structural design of some range hoods is relatively fixed, with low integration of components such as air intake, purification, and fan, or complex connection methods. This not only hinders production and assembly, but also makes it inconvenient for later maintenance and component replacement.

[0006] Therefore, how to improve the oil fume filtration efficiency of range hoods, simplify the maintenance process of filter components, reduce operating noise, and optimize the overall structure have become problems that urgently need to be solved by those skilled in the art. Utility Model Content

[0007] This utility model addresses the shortcomings of existing technologies by providing a range hood, the specific technical solution of which is as follows:

[0008] A range hood includes a smoke collection hood, on the upper part of which an assembled air inlet box, a purification box, and a centrifugal fan box are installed. A touch screen for the range hood is installed on the front surface of the smoke collection hood. A detachable nickel mesh primary filter and a flow guide are installed inside the smoke collection hood. The flow guide is located below the nickel mesh primary filter. A silencer elbow is installed at the air outlet end of the centrifugal fan box. The inner surface of the silencer elbow has honeycomb grooves for noise reduction.

[0009] Preferably, the guide element is a side-suction guide plate.

[0010] Preferably, the purification box includes a box body installed between an air inlet box and a centrifugal fan box. A control box is installed at the front end of the box body. Diverter plates are installed at both ends inside the box body. A high- and low-voltage stainless steel electric field core and a UV photolysis oil fume purifier are installed between the two diverter plates. The high- and low-voltage stainless steel electric field core and the UV photolysis oil fume purifier are detachably installed inside the box body. The high- and low-voltage stainless steel electric field core is close to the air inlet end of the box body, and the UV photolysis oil fume purifier is close to the air outlet end of the box body.

[0011] Preferably, the diverter plate includes a detachable diverter frame installed inside the housing, and a diverter grid plate for diverting the flow is fixed inside the diverter frame.

[0012] Preferably, the nickel mesh primary filter element includes an iron frame fixed inside the smoke collection hood. A first steel wire filter, a second steel wire filter, a nickel wire filter, and a pressure limiting ring are installed sequentially from bottom to top inside the iron frame. Insert rods are installed at the four corners of the pressure limiting ring. Magnets are fixed in the slots where the insert rods fall down, and the magnets are fixed to the iron frame by magnetic force.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. Improved Fume Filtration Efficiency and Uniformity: The guide vane installed inside the fume hood is located below the nickel mesh pre-filter, guiding the fumes below the hood to disperse them to the area below the nickel mesh pre-filter. This prevents fumes from concentrating and impacting the filter in one area, ensuring full utilization of the filter's area. This design not only improves the initial filtration effect of the fumes, reducing the likelihood of unfiltered fumes directly entering subsequent components, but also reduces the probability of localized clogging of the filter, extending its effective service life.

[0015] 2. Simplified filter maintenance process: The nickel mesh primary filter adopts a detachable design, which, together with the detachable structure of the flow guide, greatly facilitates the user's cleaning and replacement of the filter and flow guide.

[0016] 3. Significantly Reduced Operating Noise: The silencer elbow installed at the air outlet of the centrifugal fan box uses a honeycomb groove structure on its inner surface to reduce airflow noise. The honeycomb grooves effectively dissipate sound energy through the reflection, interference, and friction of sound waves within the honeycomb holes, especially effectively suppressing mid-to-high frequency noise generated by the fan. This design directly targets the airflow channel at the noise source, significantly reducing the noise transmitted to the outside world during range hood operation, improving the acoustic environment of the kitchen, and enhancing user comfort.

[0017] 4. Optimized Overall Structure and Practicality: The air inlet box, purification box, and centrifugal fan box adopt a modular assembly design, which not only facilitates modular assembly during the production process and improves production efficiency, but also allows for convenient individual repair or replacement of components during later use, reducing maintenance costs. The functional zones of each component are clearly defined, and the synergistic effect of the nickel mesh pre-filter, air guide components, and silencer elbows enables the range hood to achieve highly efficient linkage in smoke collection, filtration, exhaust, and noise reduction, resulting in superior overall performance and better meeting the modern kitchen's needs for cleanliness, quiet operation, and ease of maintenance. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of Embodiment 1 of the present utility model;

[0019] Figure 2 This is a three-dimensional structural diagram of Embodiment 2 of the present invention;

[0020] Figure 3 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 4 This is a schematic diagram of the three-dimensional partially unfolded structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the nickel mesh primary filter element in this utility model;

[0023] Figure 6 This is a schematic cross-sectional view of the nickel mesh primary filter element in this utility model.

[0024] Figure 7 for Figure 6 Enlarged structural diagram at point A;

[0025] Figure 8 This is a schematic diagram of the flow divider structure in this utility model.

[0026] Attached reference numerals: 1. Smoke hood; 2. Nickel mesh primary filter; 21. Iron frame; 22. First steel wire filter; 23. Second steel wire filter; 24. Nickel wire filter; 25. Pressure limiting ring; 26. Insert rod; 27. Magnet; 31. Side suction guide plate; 32. Louvered guide plate; 4. Air inlet box; 5. Purification box; 51. Box body; 52. High and low voltage stainless steel electric field core; 53. UV photolysis oil fume purifier; 54. Diverter plate; 541. Diverter frame; 542. Diverter grid plate; 55. Control box; 6. Centrifugal fan box; 7. Silencing elbow; 8. Range hood touch screen. Detailed Implementation

[0027] The technical solution of this utility model will now be described with reference to the accompanying drawings and embodiments.

[0028] Example 1

[0029] Please see Figure 3-8 This embodiment provides the following technical solution: a range hood, including a smoke collection hood 1, an air inlet box 4, a purification box 5 and a centrifugal fan box 6 assembled and combined on the upper part of the smoke collection hood 1, a range hood touch screen 8 installed on the front surface of the smoke collection hood 1, a detachable nickel mesh primary filter 2 and a flow guide installed inside the smoke collection hood 1, the flow guide being located below the nickel mesh primary filter 2, and a silencer elbow 7 installed at the air outlet end of the centrifugal fan box 6, the inner surface of the silencer elbow 7 having honeycomb grooves for noise reduction.

[0030] In this embodiment, a detachable nickel mesh primary filter 2 and a flow guide are installed inside the fume hood 1. The flow guide is located below the nickel mesh primary filter 2, which facilitates the dispersion of oil fumes below the fume hood 1 to the area below the nickel mesh primary filter 2. The dispersed oil fumes are then preliminarily filtered by the nickel mesh primary filter 2. The silencer elbow 7 installed at the air outlet of the centrifugal fan box 6 allows the silencer elbow 7 to reduce noise by using the honeycomb grooves on its inner surface, thereby reducing the noise of the range hood during operation.

[0031] Specifically, the purification box 5 includes a box 51 installed between the air inlet box 4 and the centrifugal fan box 6. A control box 55 is installed at the front end of the box 51. Both ends of the box 51 are equipped with a diversion plate 54. A high and low voltage stainless steel electric field core 52 and a UV photolysis oil fume purifier 53 are installed between the two diversion plates 54. The high and low voltage stainless steel electric field core 52 and the UV photolysis oil fume purifier 53 are detachably installed in the box 51. The high and low voltage stainless steel electric field core 52 is close to the air inlet end of the box 51, and the UV photolysis oil fume purifier 53 is close to the air outlet end of the box 51. The diversion plate 54 includes a detachable diversion frame 541 installed in the box 51. A diversion grid plate 542 for diversion is fixed in the diversion frame 541.

[0032] In this embodiment, a purification box 5 is constructed, consisting of a housing 51, high and low voltage stainless steel electric field cores 52, a UV photolysis fume purifier 53, a diversion plate 54, and a control box 55. The high and low voltage stainless steel electric field cores 52 and the UV photolysis fume purifier 53 are installed between the two diversion plates 54 inside the housing 51. This allows the high and low voltage stainless steel electric field cores 52 and the UV photolysis fume purifier 53 to be adjusted according to the air inlet of the housing 51. This ensures that when the fumes first pass through the high and low voltage stainless steel electric field cores 52, the high and low voltage stainless steel electric field cores... After the particulate matter in the oil fume is adsorbed by high voltage electrostatic adsorption, it passes through the UV photolysis oil fume purifier 53. The UV photolysis oil fume purifier 53 uses ultraviolet light to decompose the gaseous pollutants in the oil fume, converting the pollutants into harmless carbon dioxide and water by breaking molecular bonds, thus improving the oil fume purification effect. At the same time, it solves the problem that it is difficult to adjust the order of the high and low voltage stainless steel electric field core 52 and UV photolysis oil fume purifier 53 according to the air inlet and outlet of the purification box 5 when using fixed installation.

[0033] Specifically, the nickel mesh primary filter element 2 includes an iron frame 21 fixed inside the smoke hood 1. The iron frame 21 is installed from bottom to top with a first steel wire filter 22, a second steel wire filter 23, a nickel wire filter 24, and a pressure limiting ring 25. Insert rods 26 are installed at the four corners of the pressure limiting ring 25. Magnets 27 are fixed in the slots of the inserted rods 26, and the magnets 27 are fixed to the iron frame 21 by magnetic force.

[0034] In this embodiment, the nickel mesh primary filter element 2 is composed of an iron frame 21, a first steel wire filter 22, a second steel wire filter 23, a nickel wire filter 24, a pressure limiting ring 25, a plug rod 26, and a magnet 27. The first steel wire filter 22, the second steel wire filter 23, and the nickel wire filter 24, which are installed from bottom to top in the iron frame 21, are pressure-limited by the pressure limiting ring 25, which facilitates the first steel wire filter 22, the second steel wire filter 23, and the nickel wire filter 24 to perform preliminary filtration of oil fumes. The plug rod 26, which is fixed at the four corners of the pressure limiting ring 25, is magnetically fixed to the iron frame 21 by the magnet 27, which facilitates the disassembly and replacement of the first steel wire filter 22, the second steel wire filter 23, and the nickel wire filter 24.

[0035] Example 2

[0036] Please see Figure 1 , 3 -8. The technical solution that differs between this embodiment and Embodiment 1 is as follows: The guide is a side-suction guide plate 31; the guide is a side-suction guide plate 31, which facilitates the side-suction of the oil fumes below the smoke hood 1 and their filtration through the nickel mesh primary filter 2.

[0037] Example 3

[0038] Please see Figure 2-8The technical solution that differs between this embodiment and Embodiment 1 is as follows: the guide component is a louvered guide plate 32; by using the louvered guide plate 32 as the guide component, the oil fumes below the smoke hood 1 can be dispersed by the louvered guide plate 32 and then filtered by the nickel mesh primary filter 2.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A range hood, comprising a smoke collection hood (1), wherein an assembled air inlet box (4), a purification box (5), and a centrifugal fan box (6) are installed on the upper part of the smoke collection hood (1), and a range hood touch screen (8) is installed on the front surface of the smoke collection hood (1), characterized in that: The smoke collection hood (1) is equipped with a detachable nickel mesh primary filter (2) and a flow guide. The flow guide is located below the nickel mesh primary filter (2). The air outlet of the centrifugal fan box (6) is equipped with a silencer elbow (7). The inner surface of the silencer elbow (7) is provided with honeycomb grooves for noise reduction.

2. The range hood according to claim 1, characterized in that: The flow guide is a side suction flow guide plate (31).

3. A range hood according to claim 1, characterized in that: The flow guide is a louvered flow guide (32).

4. A range hood according to claim 2 or 3, characterized in that: The purification box (5) includes a box (51) installed between the air inlet box (4) and the centrifugal fan box (6). A control box (55) is installed at the front end of the box (51). Diverter plates (54) are installed at both ends inside the box (51). A high and low voltage stainless steel electric field core (52) and a UV photolysis oil fume purifier (53) are installed between the two diverter plates (54). The high and low voltage stainless steel electric field core (52) and the UV photolysis oil fume purifier (53) are detachably installed inside the box (51). The high and low voltage stainless steel electric field core (52) is close to the air inlet end of the box (51), and the UV photolysis oil fume purifier (53) is close to the air outlet end of the box (51).

5. A range hood according to claim 4, characterized in that: The diversion plate (54) includes a detachable diversion frame (541) installed inside the housing (51), and a diversion grid plate (542) for diversion is fixed inside the diversion frame (541).

6. A range hood according to claim 5, characterized in that: The nickel mesh primary filter element (2) includes an iron frame (21) fixed inside the smoke collection hood (1). The iron frame (21) is installed from bottom to top with a first steel wire filter (22), a second steel wire filter (23), a nickel wire filter (24), and a pressure limiting ring (25). The pressure limiting ring (25) has four corners with insert rods (26). The insert rods (26) have magnets (27) fixed in the slots where they fall down, and the magnets (27) are fixed to the iron frame (21) by magnetic force.

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