Double-inlet high-efficiency odor-removing range hood

Abstract

The utility model relates to a high -efficient purify smell oil smoke machine of double air inlet, which includes casing and installs the smoke collecting cover on the casing upper end, the hollow formation air channel in casing, and the fan system with the air channel lead through arrangement is installed to the smoke collecting cover, the front end opening of casing is provided with the smoke suction mouth, and the smoke guide board covers and connects on the smoke suction mouth, a plurality of lower air inlet grooves are arranged between the smoke guide board and the bottom of smoke suction mouth, and the lower air inlet groove leads through with air channel, the front end of casing extends to the front and has the front edge portion, the lighting lamp board is installed at the bottom of front edge portion, and a plurality of upper air inlet grooves are arranged in the front of lighting lamp board and penetrate the front edge portion, and the upper air inlet groove leads through with air channel. The utility model has the advantages that: the upper air inlet groove and the lower air inlet groove form two independent air inlet channels, intercept and adsorb oil fume from multiple directions, reduce the escape of oil fume, significantly improve the smoke suction rate of oil smoke machine, and the smoke suction effect is ideal.

Description

Technical Field

[0001] This utility model relates to the field of range hood technology, specifically a high-efficiency deodorizing range hood with dual upper and lower air intakes. Background Technology

[0002] With the improvement of people's living standards, kitchen appliances are becoming increasingly popular. As an important smoke extraction device in the kitchen, the performance and effectiveness of the range hood directly affect the cleanliness of the kitchen environment and the user's cooking experience. Currently, there are many types of range hoods on the market, mainly including top-mounted and side-mounted types. Among them, the side-mounted type is increasingly favored by consumers because it does not take up space above the kitchen and has an ideal oil and smoke separation effect.

[0003] However, existing side-draft range hoods typically have their intake vents positioned at the bottom to effectively capture and disperse cooking fumes laterally. But in reality, especially during stir-frying or deep-frying where there is a large volume of fumes at high temperatures, the fumes rise rapidly due to heat. This upward speed often exceeds the horizontal suction force that the bottom intake vent of a side-draft range hood can generate. This means that even if the intake vent is positioned low and close to the stove, some fumes still rise and escape, leading to a decline in kitchen air quality. Walls and other surfaces become easily contaminated with fumes, affecting the cleanliness and hygiene of the kitchen environment. This significantly reduces the overall fume extraction rate of the range hood and poses a potential health risk. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a high-efficiency deodorizing range hood with dual air intakes at the top and bottom. This range hood features a simple structure, low manufacturing cost, dual air intake channels for multi-directional interception and adsorption of oil fumes, high smoke extraction efficiency, ideal smoke extraction effect, ensures a clean and hygienic kitchen, facilitates user cleaning and maintenance, and protects people's health.

[0005] The purpose of this utility model is achieved in the following way: a high-efficiency deodorizing range hood with dual upper and lower air intakes, comprising a housing and a smoke collection hood installed on the upper part of the housing. The housing is hollow to form an air duct, and a fan system installed on the smoke collection hood is connected to the air duct. The front end of the housing has a smoke inlet, and a smoke guide plate is connected to the smoke inlet. Several lower air intake slots are provided between the smoke guide plate and the bottom of the smoke inlet, and the lower air intake slots are connected to the air duct. The front end of the housing extends forward to form a front edge portion, and a lighting panel is installed at the bottom of the front edge portion. Several upper air intake slots are provided through the front edge portion to the front of the lighting panel, and the upper air intake slots are connected to the air duct.

[0006] A filter screen is installed and covered at the lower air inlet slot.

[0007] The upper air inlet slots are distributed laterally along the front edge of the front end, and the upper air inlet slots extend toward the air duct with a flange.

[0008] The flange is inclined inward.

[0009] The bottom of the housing is provided with an oil collection groove, which is connected to the air duct through an oil leakage hole.

[0010] The beneficial effects of this utility model are: 1. Simple structure, low manufacturing cost, and improved market competitiveness.

[0011] 2. The upper and lower air inlets form two independent air intake channels, which intercept and adsorb oil fumes from multiple directions, reduce the escape of oil fumes, significantly improve the smoke extraction rate of the range hood, and achieve ideal smoke extraction effect.

[0012] 3. The upper and lower air intake slots form two independent air intake channels, achieving a more thorough odor removal effect, ensuring the cleanliness and hygiene of the kitchen, and guaranteeing people's health.

[0013] 4. Cover the lower air inlet with a filter screen for initial physical interception, protect the internal core components, extend the service life of the range hood, and facilitate users' cleaning and maintenance of the range hood's interior.

[0014] 5. The inward-curved edge of the upper air inlet duct helps guide the fumes smoothly into the air duct, improving smoke extraction efficiency.

[0015] 6. The oil collection tank and oil leakage hole are designed to ensure that oil can be collected in the oil collection tank, ensuring the smooth flow of the air duct and the smoke extraction effect, and facilitating regular cleaning by the user. Attached Figure Description

[0016] Figure 1 This is a rendering of the final assembly of this utility model.

[0017] Figure 2 This is a schematic diagram of the smoking port in this utility model.

[0018] Figure 3 This is a schematic diagram of the upper structure of the air duct in this utility model.

[0019] Figure 4 This is a schematic diagram of the flow state of oil fumes in the air duct in this utility model. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings. A high-efficiency, odor-eliminating range hood with dual upper and lower air intakes includes a housing 1 and a smoke collection hood 2 installed on the upper part of the housing 1. The housing 1 is hollow, forming an air duct 3. A fan system installed on the smoke collection hood 2 is connected to the air duct 3. A smoke inlet is provided at the front end of the housing 1, and a smoke guide plate 4 is connected to and covers the smoke inlet. A plurality of lower air intake slots 5 are provided between the smoke guide plate 4 and the bottom of the smoke inlet, and the lower air intake slots 5 are connected to the air duct 3. The front end of the housing 1 extends forward to form a front edge portion. A lighting plate 7 is installed at the bottom of the front edge portion. A plurality of upper air intake slots 6 are provided through the front edge portion of the lighting plate 7, and the upper air intake slots 6 are connected to the air duct 3.

[0021] This range hood features several downward air intake slots at the bottom of its smoke guide plate and smoke inlet. These slots are located near the cooking area and directly capture the cooking fumes that are generated during cooking and primarily diffuse horizontally or remain suspended at low altitudes around the stove. The smoke guide plate helps guide these fumes efficiently into the downward air intake slots, from where they are ultimately exhausted through the ductwork. A forward-facing section extends from the front of the casing, and a lighting panel is installed at the bottom of this section. Several upward air intake slots are located in front of this lighting panel, penetrating the forward-facing section and connecting to the ductwork. After most of the cooking fumes are drawn into the downward air intake slots by the smoke guide plate, some fumes that rise rapidly due to heat and are difficult to capture are captured and drawn in again through the upward air intake slots. Furthermore, the upward air intake slots are cleverly positioned on the forward-facing section of the casing, achieving dual air intakes without occupying additional kitchen space, maintaining the overall compactness and aesthetics of the range hood. The upper and lower air intake ducts are two independent air intake channels that work together. The lower air intake duct draws in fumes that are close to the surface and diffuse horizontally, while the upper air intake duct draws in fumes that are rising and escaping upwards. This multi-directional intake and interception of fumes greatly reduces their escape into the upper space, fundamentally improving the range hood's smoke extraction rate, preventing the spread of fumes, significantly reducing oil particles and odors in the kitchen air, ensuring a clean and hygienic kitchen, and protecting the user's health.

[0022] The lower air inlet slot is covered with five filter screens. These filter screens are typically composed of a fine mesh or a multi-layered structure, physically intercepting and adsorbing grease. When fumes enter the range hood through the lower air inlet slot, they first pass through the filter screen covering the slot, separating larger oil droplets, particles, and some condensed grease. Lighter gases continue to pass through the filter screen and are discharged into the duct. As the first line of defense, the filter screen performs initial separation of fumes, effectively preventing large oil particles from directly entering the duct and causing corrosion and wear to internal components such as the fan and impeller. It also reduces grease buildup, extending the range hood's lifespan and helping to maintain unobstructed airflow, thus ensuring stable suction performance over the long term.

[0023] Several upper air inlet slots 6 are distributed laterally along the front edge of the front portion, and each upper air inlet slot 6 extends towards the air duct 3 with a flange 61. The multiple upper air inlet slots are arranged laterally along the front edge of the front portion, and the suction area covers most of the width of the front edge. When the fumes rise, regardless of how they diffuse horizontally, they can be captured more evenly and comprehensively, avoiding blind spots and further enhancing the overall fume extraction rate. Secondly, each upper air inlet slot extends towards the air duct with a flange. When external air and fumes are drawn into the upper air inlet slot, the flange acts as an airflow guide, smoothly guiding the airflow to turn and enter the air duct, reducing airflow turbulence and eddies, allowing the fumes to enter the air duct more smoothly and efficiently, reducing unnecessary airflow resistance, and thus improving the fume extraction effect of the upper air inlet.

[0024] The flange 61 is inclined inwards. The inclination direction of the flange is towards the internal air duct of the range hood. When the external oil fume airflow is drawn into the upper air inlet, the inclined flange can more accurately and effectively guide the airflow into the depth of the air duct, further optimizing the airflow introduction angle and path, reducing airflow impact and energy loss, and maximizing the smoke extraction efficiency of the upper air inlet. At the same time, the inclination angle can also separate oil droplets and guide the condensed oil droplets to slide inwards along its inner surface, keeping the outer surface of the range hood clean.

[0025] The bottom of the housing 1 is provided with an oil collection tank 8, which is connected to the air duct 3 through an oil drain hole. Separated oil droplets flow along the inner wall of the air duct and then flow into the oil collection tank at the bottom of the housing through the oil drain hole, maintaining internal cleanliness and preventing corrosion of core components. The oil drain hole ensures that oil flows precisely and orderly from the air duct into the oil collection tank without backflow or clogging the air duct, preventing oil accumulation inside the air duct and affecting its smooth flow and smoke extraction efficiency. Furthermore, the oil is collected in a removable oil collection tank, which users only need to periodically remove for emptying and cleaning, greatly simplifying the daily cleaning of the range hood and improving maintenance convenience.

[0026] In summary: When the range hood is turned on, the fan system installed inside the smoke collection hood generates a strong negative pressure within the air duct formed by the hollow casing. At this time, the capture of oil fumes is achieved through two independent air intake channels. The lower air intake channel, located between the bottom of the smoke inlet and the smoke guide plate, is mainly responsible for capturing oil fumes generated close to the cooking area and spreading horizontally or at low altitudes. The filter screen performs primary filtration of the incoming oil fumes, intercepting large particles of oil and protecting the internal fan and air duct. The upper air intake channel, located on the forward-extending front edge of the upper part of the casing, is specifically designed to intercept and capture oil fumes that rapidly escape upwards due to the thermal effect. The upper air intake channel is horizontally distributed along the front edge of the front edge, forming a wide capture area to ensure no fumes are missed. The inward-sloping flange of the upper air intake channel not only efficiently guides the airflow smoothly into the air duct but also assists in oil droplet separation and prevents oil splattering. With its dual upper and lower air intake channels, the range hood can capture cooking fumes from multiple directions. Whether it's low-altitude fumes or upward-flying fumes, they are quickly and efficiently drawn into the duct, significantly improving the fume extraction rate at the source, ensuring clean kitchen air, and achieving excellent odor removal. The fumes drawn into the duct flow at high speed under the action of the fan system. Through the airflow organization and centrifugal force within the duct, oil droplets are effectively separated and collect along the inner wall of the duct. The collected grease is then precisely guided through the oil drain hole to the oil collection tray located at the bottom of the casing. This centralized collection of grease facilitates regular cleaning and maintenance, prevents grease buildup inside the duct, ensures unobstructed airflow, maintains the range hood's stable and efficient suction, and extends its overall lifespan, making it widely applicable.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A high-efficiency odor-eliminating range hood with dual top and bottom air intakes, characterized in that: It includes a housing (1) and a smoke hood (2) installed on the upper end of the housing (1). The housing (1) is hollow to form an air duct (3). The fan system installed on the smoke hood (2) is connected to the air duct (3). The front opening of the housing (1) is provided with a smoke inlet, and a smoke guide plate (4) is connected to the smoke inlet. A number of lower air inlet slots (5) are provided between the smoke guide plate (4) and the bottom of the smoke inlet, and the lower air inlet slots (5) are connected to the air duct (3). The front end of the housing (1) extends forward to have a front edge portion, and a lighting plate (7) is installed at the bottom of the front edge portion. Several upper air inlet slots (6) are provided through the front edge portion of the lighting plate (7), and the upper air inlet slots (6) are connected to the air duct (3).

2. The high-efficiency odor-removing range hood with dual upper and lower air intakes according to claim 1, characterized in that: A filter screen is installed at the lower air inlet slot (5).

3. The high-efficiency odor-removing range hood with dual upper and lower air intakes according to claim 1, characterized in that: The upper air inlet slot (6) has several horizontally distributed along the front end of the front edge, and the upper air inlet slot (6) extends toward the air duct (3) with a flange (61).

4. The high-efficiency odor-removing range hood with dual upper and lower air intakes according to claim 3, characterized in that: The flange (61) is inclined inward.

5. A high-efficiency odor-removing range hood with dual upper and lower air intakes according to claim 1, characterized in that: The bottom of the housing (1) is provided with an oil collection groove (8), which is connected to the air duct (3) through an oil leakage hole.

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