Gas jet flow range hood

Abstract

The utility model relates to the technical field of kitchen appliances, in particular to a gas jet range hood. A jet pipe with the lower end closed is arranged in a negative pressure gas collecting cover of the device, an air supercharger is arranged outside the negative pressure gas collecting cover, the gas outlet end of the air supercharger is connected with an air pressure stabilizing device, and the gas outlet end of the air pressure stabilizing device is communicated with the interior of the jet pipe through a pipeline; the upper end of the negative-pressure gas collecting cover is connected with a diffusion pipe, the upper end of the diffusion pipe is connected with a mixing pipe, the upper end of the mixing pipe is connected with a one-way valve, and an outlet in the upper end of the jet pipe extends into the diffusion pipe. Negative pressure is generated through jet flow, the negative pressure difference is large, the adsorption capacity is high, and the efficiency is high; a fan is not adopted, so that heavy oil stains are prevented from being accumulated on rotating blades, and the lampblack adsorption effect is greatly reduced; an exhaust airflow channel is unobstructed, so that the workload of cleaning the range hood is greatly reduced.

Description

Technical Field:

[0001] The utility model relates to the technical field of kitchen appliances, and particularly relates to an air jet range hood. Background Art:

[0002] At present, the working principle of a range hood is designed and developed based on the principle of aerodynamics, mainly through the following three steps: negative pressure inhalation, oil fume separation, and flue gas discharge. The core fan of the range hood is driven by electricity. The range hood is installed above the stove. After the power supply of the range hood is connected, the motor directly drives the blades to generate negative pressure, sucking the oil fume gas into the interior of the range hood. The oil fume gas passes through the oil mesh for the first oil fume separation. Then it enters the interior of the range hood duct, and the second oil fume separation of the oil fume gas is carried out by the rotation of the impeller. The oil fume in the duct is affected by the centrifugal force, and the oil mist condenses into oil droplets, which are collected into the oil cup through the oil path. Finally, the purified flue gas is discharged along the fixed path.

[0003] Since the rotating blades of the range hood fan are in the flue, after long-term use, the oil mist is easily adsorbed on the inner wall of the range hood and the fan blades, condensing into oil droplets, causing oil hanging inside the range hood, making it difficult to clean. The fan blades accumulate heavy oil stains, the working efficiency becomes low, and the effect of adsorbing oil fume is greatly reduced. Content of the Utility Model:

[0004] The technical problem to be solved by the utility model is to provide an air jet range hood. This device realizes generating negative pressure through jet flow, with a large negative pressure difference, strong adsorption force, and high efficiency; it does not use a fan, avoiding the accumulation of heavy oil stains on the rotating blades, resulting in a greatly reduced effect of adsorbing oil fume; the exhaust gas flow channel has no obstruction, greatly reducing the workload of cleaning the range hood.

[0005] The technical solution adopted by the utility model is: an air jet range hood, including an outer cover body. A negative pressure air collection hood with a downward opening is arranged at the lower end inside the outer cover body. The lower end of the negative pressure air collection hood is connected to a flue gas protection cover, and an oil collection box is arranged at the lower end of the flue gas protection cover; a jet pipe with a closed lower end is arranged inside the negative pressure air collection hood. An air booster is arranged outside the negative pressure air collection hood. The air outlet end of the air booster is connected to a pressure stabilizing device, and the air outlet end of the pressure stabilizing device is connected to the inside of the jet pipe through a pipeline;

[0006] The upper end of the negative pressure air collection hood is connected to a diffusion pipe, the upper end of the diffusion pipe is connected to a mixing pipe, the upper end of the mixing pipe is connected to a check valve, and the upper end outlet of the jet pipe extends into the diffusion pipe.

[0007] The air inlet end of the air booster extends out of the outer cover body and communicates with the atmosphere, and a mosquito net is installed at the air inlet end of the air booster.

[0008] The outer cover body includes lighting fixtures arranged on both sides of the flue gas protection cover and an operation panel of the range hood arranged in front of the outer cover body.

[0009] The inner diameter of the mixing pipe is larger than that of the diffuser pipe.

[0010] The air booster uses a pneumatic booster.

[0011] The mixing pipe is made of stainless steel.

[0012] The air pressure stabilizing device is made of carbon fiber.

[0013] The beneficial effects of the present utility model are as follows:

[0014] 1. Using the pressurized air flow as the power source of the range hood, the constant pressure output is achieved through the air pressure stabilizing device, and through the jet pipe and the diffuser pipe, a strong negative pressure area is formed to increase the absorption force of the oil fume. Through the mixing pipe, the high-degree mixing of the oil fume is realized, and the oil fume can be efficiently exhausted, greatly reducing the workload of cleaning the range hood.

[0015] 2. Without using a fan, it avoids the accumulation of heavy oil stains on the rotating blades, resulting in a significant reduction in the effect of adsorbing oil fume; there is no obstruction in the exhaust air flow channel, greatly reducing the workload of cleaning the range hood. Description of the drawings:

[0016] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0017] Figure 1 It is a schematic structural diagram of the present utility model.

[0018] Figure 2 It is a schematic structural diagram of the operation panel. Specific embodiments:

[0019] As Figure 1 shown, an air jet range hood includes an outer housing 14. A negative pressure air collection hood 2 with a downward opening is provided at the lower end inside the outer housing 14. The lower end of the negative pressure air collection hood 2 is connected to a flue gas protection cover 6, and an oil collection box 7 is provided at the lower end of the flue gas protection cover 6; a jet pipe 1 with a closed lower end is provided inside the negative pressure air collection hood 2. An air booster 9 is provided outside the negative pressure air collection hood 2. The air outlet end of the air booster 9 is connected to an air pressure stabilizing device 12, and the air outlet end of the air pressure stabilizing device 12 is connected to the inside of the jet pipe 1 through a pipeline 8;

[0020] The upper end of the negative pressure air collection hood 2 is connected to a diffuser pipe 5, the upper end of the diffuser pipe 5 is connected to a mixing pipe 3, the upper end of the mixing pipe 3 is connected to a one-way valve 4, and the upper end outlet of the jet pipe 1 extends into the diffuser pipe 5.

[0021] The air inlet end of the air booster 9 extends out of the outer housing 14 and communicates with the atmosphere, and a mosquito net 10 is installed at the air inlet end of the air booster 9.

[0022] AsFigure 1 , Figure 2 As shown in Figure 2 , the outer casing 14 includes lighting devices 13 disposed on both sides of the flue gas shroud 6 and an operation panel 11 of the range hood disposed in front of the outer casing 14.

[0023] The inner diameter of the mixing pipe 3 is larger than the inner diameter of the diffuser pipe 5.

[0024] The air booster 9 uses a pneumatic booster.

[0025] The mixing pipe 3 is made of stainless steel.

[0026] The air pressure stabilizing device 12 is made of carbon fiber.

[0027] The working principle of the present utility model is as follows:

[0028] Negative pressure suction: After the range hood is powered on, a pressurized air flow is provided by the air booster 9, and a constant pressure output air flow is achieved through the air pressure stabilizing device 12. The pressurized air flow enters the jet pipe 1 and forms a jet upward, forming a negative pressure area above the flue gas shroud 6, thereby generating a rapid upward air flow, and the oil fume is quickly sucked in.

[0029] Oil fume mixing: Large particle grease in the sucked oil fume will be first filtered when passing through the oil mesh of the flue gas shroud 6 and flow into the oil collecting box 7; smaller grease enters the interior of the range hood air duct and is quickly mixed in the mixing pipe 3. After being mixed with the strong air flow formed by the air booster 9, the grease will be fully mixed by the strong mixing force. Unlike traditional range hoods, the oil fume in this link will not cause the oil mist to adhere to the inner wall of the range hood and condense into oil droplets, resulting in oil hanging inside the range hood and difficult cleaning.

[0030] Flue gas discharge: The oil fume mixed gas passing through the mixing pipe 3 is discharged outdoors through the one-way valve 4 and the pipeline.

[0031] It can be understood that the above specific description of the present utility model is only for explaining the present utility model and is not limited to the technical solutions described in the embodiments of the present utility model. Those of ordinary skill in the art should understand that the present utility model can still be modified or equivalently replaced to achieve the same technical effects; as long as it meets the usage requirements, it is within the protection scope of the present utility model.

Claims

1. An air jet range hood, comprising an outer housing (14), a negative pressure air collecting hood (2) open downwardly disposed at the lower end of the inner portion of the outer housing (14), the lower end of the negative pressure air collecting hood (2) being connected to a smoke shield (6), an oil collecting box (7) being disposed at the lower end of the smoke shield (6); characterized in that: The negative pressure air collecting hood (2) is provided with a jet tube (1) with a closed lower end, and the negative pressure air collecting hood (2) is provided with an air booster (9) outside the negative pressure air collecting hood (2). The air outlet of the air booster (9) is connected to an air pressure stabilizing device (12), and the air outlet of the air pressure stabilizing device (12) is connected to the inside of the jet tube (1) through a pipeline (8); The upper end of the negative pressure air collecting hood (2) is connected to a diffusion tube (5), the upper end of the diffusion tube (5) is connected to a mixing tube (3), the upper end of the mixing tube (3) is connected to a one-way valve (4), and the upper end outlet of the jet tube (1) extends into the diffusion tube (5).

2. The air jet range hood according to claim 1, characterized in that: The air inlet end of the air booster (9) extends out of the outer cover (14) and communicates with the atmosphere, and a mosquito-proof net (10) is installed at the air inlet end of the air booster (9).

3. The air jet range hood according to claim 1, characterized in that: The outer cover (14) comprises lighting fixtures (13) arranged on both sides of the smoke shield (6) and an operating panel (11) of the range hood arranged in front of the outer cover (14).

4. The air jet range hood according to claim 1, characterized in that: The inner diameter of the mixing tube (3) is greater than the inner diameter of the diffusion tube (5).

5. The air jet range hood according to claim 1, characterized in that: The air booster (9) is a pneumatic booster.

6. The air jet range hood according to claim 1, characterized in that: The mixing tube (3) is made of stainless steel.

7. The air jet range hood according to claim 1, characterized in that: The air pressure stabilizing device (12) is made of carbon fiber material.

Images