A columnar oil fume purification system for outdoor catering facilities

Abstract

This utility model provides a columnar oil fume purification system for outdoor catering facilities, relating to the field of oil fume purification equipment. The inlet of the flue shell uses a three-sided surrounding primary filter. An oil collection box is detachably installed at the bottom of the flue shell. A purification filter element composed of an HPEA filter and an activated carbon filter is installed above the fan assembly. A fume hood is installed at the top of the purification system, with a bearing installed in the middle of the hood base. The hood base and the hood are rotatably connected via the bearing. A rainproof cover is fixed to the hood base, and an exhaust net is provided on the side walls of the hood. A wind deflector is fixed to the top of the hood. The fume hood of this utility model can rotate with the wind direction, effectively preventing backflow of oil fumes and improving exhaust efficiency. The inclined primary filter on three sides expands the effective oil fume absorption range. The combination of the range hood and the purification filter element effectively reduces the pollution of outdoor air by oil fumes.

Description

Technical Field

[0001] This utility model relates to the technical field of oil fume purification equipment. Background Technology

[0002] The core components of a household range hood mainly include a fan system, a filtration system, and a smoke exhaust system. It uses a motor to drive a fan wheel, whose blades continuously throw air from the center towards the outer casing, creating a low-pressure zone in the center of the fan wheel. The area near where the fumes are generated is at normal pressure. According to Bernoulli's principle, fumes flow from high-pressure areas to low-pressure areas. The inhaled gas mixture first impacts the grease filter and, under gravity, slides down its surface into the grease cup. After passing through the filter, the mixture enters the fan system, where smaller oil droplets are thrown against the inner wall of the casing. After these two separations, most of the grease is retained, while the relatively clean fumes continue to flow forward into the casing's outlet, then through a check valve, into the flue, and finally discharged into the outdoor public flue or atmosphere. However, most outdoor fume extraction equipment is currently simple, with only basic suction and exhaust functions. Directly releasing incompletely purified gas outdoors can easily pollute the environment. Furthermore, outdoor wind direction is unpredictable, and the smoke extraction effect of fixed fume hoods is easily affected by wind direction. Summary of the Invention

[0003] In order to overcome the problems of incomplete purification and easy interference of wind direction in existing outdoor fume purification systems, this utility model provides a columnar fume purification system for outdoor catering facilities.

[0004] The technical solution adopted by this utility model to achieve the above-mentioned objectives is as follows: a columnar oil fume purification system for outdoor catering facilities. A flue shell is installed on the base of the exhaust pipe. A primary filter screen is installed inside the flue shell. An oil collection box is detachably installed at the lower part of the flue shell. A volute fan shell is installed on the inner wall of the flue shell above the primary filter screen. A centrifugal impeller is installed inside the volute fan shell, and the centrifugal impeller is connected to a motor. The outlet of the volute fan shell is connected to a purification filter element via a check valve. The upper end of the purification filter element is connected to an exhaust hose. The upper end of the exhaust hose is connected to an exhaust hood base. An exhaust hood is rotatably connected to the exhaust hood base. An exhaust screen is provided on the side wall of the exhaust hood, and a windproof plate is fixed to the upper end of the exhaust hood. When there is wind, the rotation of the windproof plate can drive the exhaust hood below to rotate, ensuring smooth exhaust.

[0005] Specifically, the upper end of the primary filter screen is installed inside the flue housing at a 12° outward tilt.

[0006] Specifically, the lower part of the flue shell is provided with a groove, and the oil collection box is installed in the groove.

[0007] Specifically, the purification filter element is divided into two interconnected layers: the lower layer is an HPEA filter (high-efficiency particulate filter) and the upper layer is an activated carbon filter.

[0008] Specifically, the smoke exhaust net is divided into a large smoke exhaust net arranged in the middle and small smoke exhaust nets arranged on both sides.

[0009] Specifically, the outer side of the smoke hood base is connected to a support plate.

[0010] Specifically, a rain cover is installed on the top of the smoke hood, and the rain cover is fixed to the base of the smoke hood by a support rod.

[0011] Specifically, a bearing is installed in the middle of the base of the smoke hood, and the base of the smoke hood and the smoke hood are rotatably connected through the bearing.

[0012] Specifically, the windward plate is a wind vane.

[0013] The beneficial effects of this utility model are as follows: The exhaust hood of this utility model can rotate with the wind direction, effectively preventing backflow of oil fumes and improving exhaust efficiency; the inclined primary filter screen set on three sides expands the effective range of oil fume absorption; the combination of range hood and purification filter effectively reduces pollution to outdoor air. Attached Figure Description

[0014] Figure 1 This is an overall structural diagram of the present invention.

[0015] Figure 2 This is a structural diagram of the smoke exhaust system of this utility model.

[0016] Figure 3 This is a structural diagram of the smoke hood of this utility model.

[0017] Figure 4 This is a structural diagram of the purification filter element and fan of this utility model.

[0018] The markings in the diagram are: 1. Primary filter; 2. Oil collection box; 3. Volute fan housing; 4. Centrifugal impeller; 5. Motor; 6. Check valve; 7. Purification filter element; 8. HPEA filter; 9. Activated carbon filter; 10. Exhaust hose; 11. Exhaust hood base; 12. Bearing; 13. Exhaust hood; 14. Exhaust mesh; 15. Rain cover; 16. Windshield; 17. Exhaust pipe base; 18. Flue housing; 19. Support plate; 20. Shaft; 21. Support rod; 22. Groove. Detailed Implementation

[0019] The present invention will be further explained and described below with reference to the accompanying drawings and embodiments.

[0020] Please seeFigures 1-3 This utility model provides a columnar oil fume purification system for outdoor catering facilities. A flue shell 18 is installed on the exhaust pipe base 17. Three circumferentially distributed primary filter screens 1 are embedded in the flue shell 18. The upper end of the primary filter screen 1 is inclined outward at 12°, which helps to improve the smoke extraction effect. The oil collection box 2 is detachably installed in the groove 22 opened at the lower part of the flue shell 18, and the oil collection box 2 is located below the primary filter screen 1. A fan assembly is installed on the inner wall of the flue shell above the primary filter screen 1. The outlet of the fan assembly is connected to the purification filter element 7 through the check valve 6. The upper end of the purification filter element 7 is connected to the exhaust hose 10. The upper end of the exhaust hose 10 is connected to the exhaust hood base 11.

[0021] The base 11 of the smoke hood is equipped with a bearing 12 in the middle, which matches the rotating shaft 20 in the middle of the bottom of the smoke hood 13. The base 11 and the smoke hood 13 are rotatably connected through the bearing 12. A wind vane is fixed at the upper end of the smoke hood 13. When there is wind, the wind vane rotates under the drive of the wind, which in turn drives the smoke hood 13 to rotate, ensuring that the smoke hood 13 exhausts smoke smoothly.

[0022] Three support plates 19 are connected to the outer side of the smoke hood base 11. A smoke exhaust net 14 is provided on the side wall of the smoke hood 13, comprising a large smoke exhaust net in the middle and smaller smoke exhaust nets on both sides of the large net. To prevent rainwater from flowing into the smoke hood 13, a rainproof cover 15 is installed on top of the smoke hood 13. The rainproof cover 15 is fixed to the smoke hood base 11 by four support rods 21.

[0023] Please see Figure 4 The fan assembly includes a volute fan housing 3, inside which a centrifugal impeller 4 is installed, and the centrifugal impeller 4 is driven by a motor 5 connected thereto; the purification filter element 7 is divided into two interconnected upper and lower layers, the lower layer being an HPEA filter 8, which can efficiently filter solid particulate matter, and the upper layer being an activated carbon filter 9, which can adsorb volatile organic compounds (VOCs) and odor molecules in the fumes.

[0024] Working process: When cooking in outdoor catering facilities, the generated fumes first pass through the primary filter 1, during which large oil droplets, food residue, hair, etc., are filtered out to prevent them from entering the subsequent components, thus protecting the core components and extending the service life of the filter element. The oil droplets separated by the initial filtration fall into the oil collection box 2 below. The centrifugal impeller 4 rotates at high speed driven by the motor 5, and the air between the blades is thrown to the edge at high speed, forming a low-pressure area in the center of the impeller 4, thereby generating suction to draw in the fumes. Under the pressurization and guidance of the volute fan casing 3, the high-speed airflow thrown out by the centrifugal impeller 4 is collected and converged at the upper outlet, opening the check valve 6. Next, the fumes enter the purification filter element 7, and pass through the HEPA filter 8 and activated carbon filter 9 in sequence for purification. The purified gas enters the exhaust hood 13 through the exhaust hose 10, and then passes through the exhaust net 14 set on the side wall of the exhaust hood 13 and is discharged into the atmosphere along the wind direction. The presence of the rain cover 15 effectively prevents rainwater from directly entering the smoke exhaust pipe. In windy conditions, the smoke exhaust cover 13 will rotate with the wind vane to ensure smooth smoke exhaust.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. Furthermore, no reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A columnar fume purification system for outdoor catering facilities, characterized in that: A flue shell (18) is installed on the flue base (17). A primary filter (1) is installed inside the flue shell (18). An oil collection box (2) is detachably installed at the bottom of the flue shell (18). A volute fan shell (3) is installed on the inner wall of the flue shell (18) above the primary filter (1). A centrifugal impeller (4) is installed inside the volute fan shell (3). The centrifugal impeller (4) is connected to a motor (5). The outlet of the volute fan shell (3) is connected to a purification filter element (7) through a check valve (6). The upper end of the purification filter element (7) is connected to a flue hose (10). The upper end of the flue hose (10) is connected to a flue hood base (11). A flue hood (13) is rotatably connected to the flue hood base (11). A flue net (14) is provided on the side wall of the flue hood (13). A windproof plate (16) is fixed at the upper end of the flue hood (13).

2. The columnar fume purification system for outdoor catering facilities according to claim 1, characterized in that: The primary filter (1) is installed inside the flue casing (18) with its upper end tilted outward at 12°.

3. A columnar fume purification system for outdoor catering facilities according to claim 1, characterized in that: The lower part of the flue shell (18) is provided with a groove (22), and the oil collection box (2) is installed in the groove (22).

4. A columnar fume purification system for outdoor catering facilities according to claim 1, characterized in that: The purification filter element (7) is divided into two interconnected layers: the lower layer is an HPEA filter (8) and the upper layer is an activated carbon filter (9).

5. A columnar fume purification system for outdoor catering facilities according to claim 1, characterized in that: The smoke exhaust net (14) is divided into a large smoke exhaust net in the middle and small smoke exhaust nets on both sides.

6. A columnar fume purification system for outdoor catering facilities according to claim 1, characterized in that: The outer side of the smoke hood base (11) is connected to the support plate (19).

7. A columnar fume purification system for outdoor catering facilities according to claim 1, characterized in that: A rain cover (15) is installed on the top of the smoke hood (13), and the rain cover (15) is fixed to the base (11) of the smoke hood by a support rod (21).

8. A columnar fume purification system for outdoor catering facilities according to claim 1, characterized in that: The smoke hood base (11) and the smoke hood (13) are rotatably connected by a bearing (12) installed in the middle of the smoke hood base (11).

9. A columnar fume purification system for outdoor catering facilities according to claim 1, characterized in that: The wind vane (16) is a wind vane.

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