CN106949520A - A kind of spiral-flow type collection smoke exhaust - Google Patents

Abstract

The invention discloses a swirl-type range hood, which belongs to the technical field of range hoods and comprises a fume hood and a flue connected to the upper end of the fume hood; the fume hood is divided into an upper part of the fume hood and a lower part of the fume hood; The inner wall of the upper section of the cover is provided with a spiral guide strip; the lower surface of the guide strip is fixedly provided with a plurality of air nozzles A, and the air injection ports of the air nozzle A are all arranged along the direction of the spiral rise of the guide strip; the bottom of the lower section of the smoke hood is provided with There is a drainage groove corresponding to the lower end of the guide bar, and the notch of the drainage groove is upward. The swirl type range hood of the present invention is simple in structure and easy to maintain; it has strong oil fume suction ability, high oil droplet adsorption rate, high work efficiency, and low noise generated during work to avoid interference to cooking.

Description

A swirl type range hood

technical field

The invention relates to the technical field of range hoods, in particular to a swirl type collection and discharge range hood.

Background technique

Range hood, also known as range hood or range hood, is a kitchen appliance for extracting oil fume. The range hood is installed above the stove in the kitchen, which can take away the waste generated by the incomplete combustion of the stove and the oil fume generated during the cooking process and discharge it to the outside, preventing the oil fume from permeating the kitchen and polluting the air. Most of the range hoods on the market currently suck the oil fume through the rotation of the built-in fan, and discharge the smoke through the flue connected to the upper end. However, there are certain defects in this type of range hood: 1. The structure is complex, the fan takes up a lot of space, and the fan itself is an obstacle that hinders the smooth discharge of lampblack, so the discharge rate of lampblack is low; 2. When the lampblack passes through the fan, the oil droplets adhere to the On the inner wall of the range hood and the blades of the fan, after cooling, the viscosity increases and combines with the dust in the air to form grease, which pollutes the range hood; resulting in increased friction between the inner wall and blades of the range hood and the air flow, resulting in greater noise. 3. There is no oil fume adsorption design in the range hood, the adsorption capacity of oil fume is limited, and the oily fume discharged outside pollutes the environment more.

Contents of the invention

The object of the present invention is to provide a swirl type range hood to solve the problems in the prior art that the range hood has weak fume discharge, high working noise and low oil droplet adsorption rate.

In order to solve the above-mentioned technical problems, a technical solution adopted by the present invention is: comprising a fume hood and a flue connected to the upper end of the fume hood; the fume hood is divided into a fume hood upper section and a fume hood lower section; Spiral guide strip; the lower surface of the guide strip is fixedly provided with a plurality of air nozzles A, and the air nozzles of the air nozzle A are all arranged along the direction of the spiral upward direction of the guide strip; the bottom of the lower section of the smoke hood is provided with a The corresponding drainage groove, and the notch of the drainage groove is upward.

Further, the inner wall of the flue is provided with a plurality of air nozzles B that spray air outward.

Further, the air nozzles B are evenly arranged along the circumference of the inner wall of the flue.

Further, the drainage groove is arranged obliquely, and a waste oil collecting device is connected to the lower end of the drainage groove.

Further, a plurality of air nozzles C for upward jetting are arranged in the drainage groove.

Further, the air nozzles C are evenly spaced along the drainage groove.

Further, the lower end of the guide bar extends to the drainage groove.

Further, the guide bar is inclined upward relative to the inner wall of the upper section of the smoke hood.

Further, the inner wall of the fume hood is provided with a grid adapted to the surface of the inner wall.

Further, the air nozzles A are evenly arranged along the guide bar.

The beneficial effects of the present invention are as follows: 1. The swirl type range hood has a simple structure, which prevents the complex structure from blocking the fume, resulting in unsmooth air flow of the fume; and because of its simple structure, it is easy to maintain and easy to clean. 2. The swirling flow collection and exhaust range hood exhausts the oil fume through the cyclone, and the grille is set to adhere to the oil fume, so that the oil droplet adsorption rate is high, and the range hood has a stronger working ability. 3. The air source equipment such as the air compressor is set to be separated from the range hood and externally installed, so that it is free from oil fume pollution and the service life of the range hood is also longer. 4. The swirl-type range hood produces an upwardly discharged cyclone, which can effectively prevent the oil fume from pouring into the kitchen.

Description of drawings

Fig. 1 is the left view schematic diagram of the present invention;

Fig. 2 is the front schematic view of the present invention;

Fig. 3 is the structural representation of guide strip among the present invention;

In the figure: 1. Air nozzle C, 2. Support member, 3. Grille, 4. Air nozzle A, 5. Flue, 6. Air nozzle B, 7. Guide bar, 8. Upper section of smoke hood, 9. Smoke Cover lower section, 10, drainage groove, 11, waste oil collecting device.

detailed description

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

As shown in Fig. 1 and Fig. 2, the present invention provides a kind of swirl type range hood, comprising a smoke hood and a flue 5 connected to the upper end of the fume hood; the other end of the flue 5 is ventilated with the fume exhaust of the building The well is connected to discharge the oily fumes from the room; the flue 5 is set as a cylinder or a cone that runs through both ends, which is convenient for installation and docking. The smoke hood is divided into a smoke hood upper section 8 and a smoke hood lower section 9; the inner wall of the smoke hood upper section 8 is provided with a spiral guide bar 7; the lower surface of the guide bar 7 is fixedly provided with a plurality of air nozzles A4, and the air jet The air nozzles of the nozzle A4 are set along the spiral upward direction of the guide bar 7, and the air nozzles A4 are evenly arranged along the guide bar 7; When the inner wall spirals up along the guide bar 7, a stable cyclone is generated; a large amount of hot air flow is generated during cooking, and the hot air flow will naturally rise due to high temperature and low density, and a large amount of oily smoke is mixed in it. When it meets the cyclone, it rotates through the smoke After the upper section 8 of the hood and the oil fume adhered to the inner wall of the upper section 8 of the hood and the grille 3, the remaining small part of the oily fume and hot air are discharged to the outside through the flue 5; The contact area with the range hood enhances the function of the range hood to absorb the range hood. When the range hood passes through, the oil droplets collide and adhere to the inner wall of the range hood and the grille 3 . The bottom of the smoke hood lower section 9 is provided with a drainage groove 10 corresponding to the lower end of the guide bar 7. The lower end of the guide bar 7 extends to the drainage groove 10 to communicate with it. A waste oil collection device 11 is connected; the guide bar 7 not only guides the generation of cyclone, but also accumulates the absorbed oil droplets and the oil droplets dripped on the inner wall of the upper section 8 of the fume hood and the grid 3 and guides them to the drainage groove 10 in time for drainage Store in the waste oil collection device 11 to prevent the waste oil from flowing down along the inner wall of the fume hood and pollute the range hood; the waste oil collection device 11 can be set as a waste plastic bottle, and when the waste oil is full, take it out and replace it to reach the waste The purpose of utilizing and saving resources; the waste oil collection device 11 can also be a specially made collection box. After the waste oil is full, it can be taken out and processed and reinstalled for continued use. It is simple and convenient, and has a beautiful appearance; The connected waste oil collection barrel, or directly discharge the waste oil into the sewer through the pipeline, is simple and convenient.

The inner wall of the flue 5 is provided with a plurality of air nozzles B6 that spray air toward the outside of the range hood, and the air nozzles B6 are evenly arranged along the circumference of the inner wall of the flue 5; In order to form a continuous channel for the fume and hot air in the flue 5 and the fume hood, the air nozzle B6 set here sprays air from the flue 5 to guide the fume and hot air through the smoke pipe to be discharged to the fume exhaust ventilation In the well, make the discharge unobstructed.

As shown in Figure 3, the guide bar 7 is inclined upward relative to the inner wall of the upper section 8 of the fume hood; The drainage groove 10 facilitates the collection and drainage of waste oil.

The inner wall of the smoke hood is provided with a grid 3 adapted to the surface of the inner wall. Specifically, the grid 3 is supported and fixed on the inner wall of the smoke hood through the support 2; it can also be directly welded or bonded on the inner wall of the smoke hood; the grid The grid 3 has many but small gaps, and the contact area with the oil fume is large without hindering the circulation of the oil fume. The oil fume easily adheres to the grid 3 and drips into the guide bar 7 and the through groove of the drainage groove 10 during diffusion.

The drainage groove 10 arranged in the lower section 9 of the fume hood is provided with a plurality of air nozzles C1 which spray air upward, and the air nozzles C1 are evenly spaced along the drainage groove 10; The flow velocity of the air is fast and the pressure is low, while the flow velocity of the oil fume away from the inner wall is slow and the pressure is high. According to the principle of fluid mechanics, the oil fume at the high pressure diffuses to the air at the low pressure to supplement the high flow air, and the oil fume mixes with the air and moves upward. The oil droplets adhere to the inner walls of the grille 3 and the lower section 9 of the smoke hood, and drop into the through groove of the drainage groove 10.

Among the above, the air inlets of the air nozzles A4, B6, and C1 are connected with air compressors, air pumps or air pipelines, which provide air sources to the air nozzles A4, B6, and C1. A large number of oil droplets adhere to the inner wall of the fume hood and the grille 3 through the jet airflow of the air nozzle A4, the air nozzle B6, and the air nozzle C1, and the oil droplets are collected into the waste oil collection device 11 through the guide bar 7 and the drainage groove 10. , so as to achieve the effect of "collecting" waste oil; after the oil droplets in the oil fume are adsorbed and treated, the residual flue gas passes through the jet air flow of the nozzle B6 again, so that the oil fume and hot air are discharged into the oil fume exhaust ventilation shaft in time through the smoke pipe, so as to achieve The effect of "exhausting" oil fume; after the above oil fume collection and exhaust treatment, most of the oil droplets have been absorbed, which can effectively prevent the exhausted smoke from polluting the environment.

The above is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technologies fields, all of which are equally included in the scope of patent protection of the present invention.

Claims (10)

1. A swirl type range hood is characterized in that it comprises a fume hood and a flue connected to the upper end of the fume hood; the fume hood is divided into the upper section of the fume hood and the lower section of the fume hood; the inner wall of the upper section of the fume hood A spiral guide strip is set; the lower surface of the guide strip is fixedly provided with a plurality of air nozzles A, and the air nozzles of the air nozzle A are all arranged along the direction of the spiral upward direction of the guide strip; the bottom of the lower section of the smoke hood is provided with a The lower end corresponds to the drainage groove, and the notch of the drainage groove is upward. 2 . The swirl type range hood according to claim 1 , characterized in that, the inner wall of the flue is provided with a plurality of air nozzles B for spraying air outward. 3 . 3. The swirl type range hood according to claim 2, characterized in that the air nozzles B are evenly arranged along the circumference of the inner wall of the flue. 4. The swirl type range hood according to claim 1, characterized in that, the drainage groove is arranged obliquely, and a waste oil collecting device is connected to the lower end of the drainage groove. 5. The swirl type range hood according to claim 1, characterized in that, a plurality of air nozzles C for upward jetting are arranged in the drainage groove. 6 . The swirl type range hood according to claim 5 , wherein the air nozzles C are evenly spaced along the drainage groove. 7 . 7. The swirl type range hood according to claim 1, characterized in that, the lower end of the guide bar extends to the drainage groove. 8. The swirl type range hood according to claim 1, characterized in that, the guide bar is inclined upward relative to the inner wall of the upper section of the smoke hood. 9. The swirl type range hood according to claim 1, characterized in that, the inner wall of the hood is provided with a grill adapted to the surface of the inner wall. 10. The swirl type range hood according to claim 1, characterized in that the air nozzles A are evenly arranged along the guide bar.