Self-cleaning oil fume and waste gas exhaust fan cover

Abstract

The invention provides a self-cleaning fume exhaust fan cover, and relates to the field of fume exhaust fan covers. The self-cleaning lampblack waste gas exhaust fan cover comprises a range hood main body, a detachable exhaust hood, a fan, a control panel for controlling the range hood main body to start and stop and a smoke flow meter for detecting the flow speed of lampblack waste gas, and the detachable exhaust hood and the fan are mounted in the range hood main body. The range hood can suck oil fume waste gas, can automatically clean oil fume attached to the oil fume waste gas exhaust fan cover and the impeller, prevents the oil fume waste gas from blocking an exhaust port, reduces the trouble of reassembly, can monitor the flow speed of oil fume waste gas suction in real time, and can automatically adjust the adjusting valve in the exhaust pipeline. The lampblack waste gas can enter subsequent purification equipment at a relatively constant flow speed under the working of the fan, so that the purification effect is improved, and the harm to the environment and human bodies is reduced.

Description

Technical Field

[0001] The invention relates to a self-cleaning fume exhaust hood, in particular to a self-cleaning fume exhaust hood, belonging to the technical field of exhaust hoods. Background Art

[0002] In the field of mechanical engineering, especially in heating, ventilation and air conditioning technology, the treatment of oil fume exhaust has always been an important topic for improving the kitchen environment. Although traditional range hoods can remove oil fume exhaust generated during cooking to a certain extent, after long-term use, a large amount of oil fume dirt is easily accumulated inside the range hood, especially on the exhaust hood and fan surface, which not only reduces the exhaust efficiency of the range hood, but also may cause secondary pollution to the kitchen environment and affect the health of users.

[0003] In the prior art, although some ventilation systems have attempted to quickly exhaust harmful air by optimizing the airflow path, such as the ventilation system disclosed in CN110192068A, which allows harmful air generated by cooking to flow in the rear direction of the cooking device to be quickly transferred to the range hood, thereby preventing the harmful air from being inhaled by the user. However, most of these systems focus on optimizing the airflow path, but pay less attention to the cleaning and maintenance of the interior of the range hood.

[0004] In order to overcome the shortcomings of existing range hoods in terms of cleaning and maintenance, the present invention proposes a self-cleaning range hood for exhaust gas and fume. The hood not only has the exhaust function of a traditional range hood, but also realizes automatic cleaning of the exhaust hood and the fan surface through the built-in first cleaning component and second cleaning component, thereby effectively extending the service life of the range hood, improving the exhaust efficiency, and reducing the difficulty and frequency of manual cleaning by users. Summary of the invention

[0005] () Technical issues solved The purpose of the present invention is to provide a self-cleaning oil fume and waste gas exhaust hood in order to solve the above-mentioned problem, so as to solve the problem in the prior art that after the ventilation and exhaust equipment is used for a long time, a large amount of oil stains will accumulate on the oil fume filter inside. If it is not cleaned regularly, the filtering performance of the oil fume filter will be greatly reduced, and a large number of bacteria will breed inside the oil fume filter, which will be difficult to clean.

[0006] () Technical solution The present invention is implemented through the following technical scheme: a self-cleaning oil fume exhaust hood, comprising a range hood body, a detachable exhaust hood and a fan are installed inside the range hood body, as well as a control panel for controlling the start and stop of the range hood body and a flue gas flow meter for detecting the flow rate of the oil fume exhaust gas, the upper surface of the range hood body is connected to a regulating valve for adjusting the flow rate of the oil fume exhaust gas in the exhaust pipe, and the interior of the range hood body is provided with a first cleaning component for cleaning the oil fume attached to the surface of the exhaust hood, and a second cleaning component for cleaning the oil fume attached to the surface of the fan.

[0007] Preferably, the first cleaning component includes a servo motor installed on the back of the smoke exhaust hood, and a cleaning block slidably connected to the smoke exhaust hood, the output shaft end of the servo motor is fixedly connected to a threaded rod, and the threaded rod is threadedly connected to a screw ring set on the back of the cleaning block. The servo motor is installed on the back of the smoke exhaust hood. When the servo motor is powered on and started, it can drive the threaded rod to rotate forward and reverse, and then through the threaded connection between the servo motor and the screw ring fixed on the back of the cleaning block, the cleaning block is driven to slide back and forth on the outer surface of the smoke exhaust hood, thereby achieving the purpose of cleaning the oil smoke and dirt attached to the surface of the smoke exhaust hood.

[0008] Preferably, the first cleaning component also includes a sleeve and a cover plate hinged to the range hood body, the inner wall of the sleeve is slidably connected to a sliding rod hinged to the cover plate, and the inner wall of the sleeve is provided with a buffer spring whose two ends are respectively fixed to the sleeve and the sliding rod. After the cleaning block moves, it can drive the sleeve to move, and then drive the sliding rod to move by the buffer spring fixed to the inner wall of the sleeve, thereby driving the cover plate to rotate with the hinge between it and the range hood body as the center of the circle, so as to carry out subsequent extraction of oil fume exhaust gas.

[0009] Preferably, a support block is fixedly connected to the inner wall of the range hood body, a bearing is inlaid on the inner wall of the support block, and the inner ring of the bearing is fixedly connected to the outer surface of the threaded rod. By providing the support block and the bearing, the threaded rod can be made more stable during rotation and the resistance of the threaded rod during rotation can be reduced, thereby avoiding jamming and swinging of the threaded rod during use.

[0010] Preferably, two fixed blocks are fixedly connected to the inner wall of the range hood body, a guide rod fixed to the fixed blocks is arranged between the two fixed blocks, and the guide rod is slidably connected to a fixed ring arranged on the back of the cleaning block, and the fixing ring fixed on the back of the cleaning block slides up and down on the outer surface of the guide rod, so that the up and down movement of the cleaning block can be guided, making it more stable during the up and down movement.

[0011] Preferably, the second cleaning component includes an electric push rod installed on the outer surface of the range hood body, the output end of the electric push rod is rotatably connected to a cleaning ring, and the cleaning ring is slidably connected to an impeller in the fan, the electric push rod is installed on the outer surface of the range hood body, the electric push rod is powered on and started, and its output end is extended and retracted, which can drive the impeller in the fan to slide back and forth, thereby cleaning the oil smoke attached to the impeller.

[0012] Preferably, a detachable collecting trough is installed on the bottom surface of the range hood body, through which the cleaned oil fume exhaust gas can be collected for subsequent centralized cleaning. A nameplate is fixedly connected to the inner wall of the range hood body, through which information such as the manufacturer of the range hood can be recorded.

[0013] Preferably, two symmetrical lighting lamps are installed on the inner wall of the range hood body, and both of the two lighting lamps are electrically connected to the control panel. The lighting lamps can provide lighting for the range hood, so that it is more convenient to use.

[0014] The present invention provides a self-cleaning fume exhaust hood, which has the following beneficial effects: 1. The invention can absorb the oil fume waste gas, and realizes the automatic cleaning of the oil fume attached to the oil fume exhaust hood and the impeller through the integrated first cleaning component and the second cleaning component. This design significantly reduces the frequency and difficulty of manual cleaning, improves the maintenance efficiency of the equipment, extends the service life of the equipment, avoids the oil fume waste gas blocking the exhaust port, and reduces the trouble of reassembly. At the same time, it can monitor the flow rate of the oil fume waste gas in real time and automatically adjust the regulating valve in the exhaust pipe to ensure that the oil fume waste gas can maintain a relatively constant flow rate under the operation of the fan to enter the subsequent purification equipment, thereby improving the purification effect and reducing the harm to the environment and human body.

[0015] 2. The invention can make the threaded rod more stable when rotating and reduce the resistance of the threaded rod when rotating by providing support blocks and bearings, thereby avoiding the threaded rod from getting stuck and swinging during use. By providing fixed blocks and guide rods, the movement of the cleaning block can be guided to make it more stable during the up and down movement. By providing a collection trough, the cleaned oil fume and waste gas can be collected for subsequent centralized cleaning. By providing a nameplate, information such as the manufacturer of the range hood can be recorded. By providing a lighting lamp, lighting can be provided for the range hood to make it more convenient to use.

[0016] 3. By real-time monitoring and adjusting the flow rate of cooking fume exhaust gas, the present invention ensures efficient purification and discharge of cooking fume exhaust gas and reduces environmental pollution. At the same time, the automatic cleaning function reduces energy consumption and resource waste caused by frequent disassembly and cleaning, which conforms to the modern concept of environmental protection and energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a right side schematic diagram of the three-dimensional structure of the present invention; Figure 3 It is a right side cross-sectional view of the three-dimensional structure of the present invention; Figure 4 A partial schematic diagram of the three-dimensional structure of the present invention Figure 1 ; Figure 5 A partial schematic diagram of the three-dimensional structure of the present invention Figure 2 ; Figure 6 A partial schematic diagram of the three-dimensional structure of the present invention Figure 1 ; Figure 7 It is a partial cross-sectional view of the three-dimensional structure of the present invention.

[0018] The reference numerals are as follows: 1. Range hood body; 2. Exhaust hood; 3. Fan; 4. Control panel; 5. Smoke flow meter; 6. Regulating valve; 701, servo motor; 702, threaded rod; 703, cleaning block; 704, sleeve; 705, cover plate; 706, slide rod; 707, buffer spring; 801, electric push rod; 802, cleaning ring; 9. Support block; 10. Fixed block; 11. Guide rod; 12. Collecting trough; 13. Nameplate; 14. Lighting lamp. DETAILED DESCRIPTION

[0019] The embodiment of the present invention provides a self-cleaning fume exhaust hood.

[0020] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 , including a range hood body 1, a detachable collecting tank 12 is installed on the bottom surface of the range hood body 1, and the cleaned oil fume exhaust gas can be collected through the collecting tank 12 for subsequent centralized cleaning. A nameplate 13 is fixedly connected to the inner wall of the range hood body 1, and information such as the manufacturer of the range hood can be recorded through the nameplate 13.

[0021] A detachable exhaust hood 2 and a fan 3 are installed inside the range hood body 1, as well as a control panel 4 for controlling the start and stop of the range hood body 1 and a flue gas flow meter 5 for detecting the flow rate of exhaust gas. The upper surface of the range hood body 1 is connected to a regulating valve 6 for adjusting the flow rate of exhaust gas in the exhaust duct.

[0022] The control panel 4 can be used to control the electrical components in the range hood, thereby improving the convenience of use. The smoke flow meter 5 is installed on the inner wall of the range hood body 1, and can monitor the flow rate of the oil fume exhaust gas in real time, and automatically adjust the regulating valve 6 in the exhaust pipe to ensure that the oil fume exhaust gas can maintain a relatively constant flow rate when the fan 3 is working to enter the subsequent purification equipment, thereby improving the purification effect and reducing the harm to the environment and human body.

[0023] Two symmetrical lighting lamps 14 are installed on the inner wall of the range hood body 1. Both lighting lamps 14 are electrically connected to the control panel 4. The lighting lamps 14 can provide lighting for the range hood to make it more convenient to use.

[0024] A first cleaning component for cleaning the oil fume attached to the surface of the exhaust hood 2 and a second cleaning component for cleaning the oil fume attached to the surface of the fan 3 are arranged inside the range hood body 1 .

[0025] The exhaust hood 2 and the fan 3 are both installed inside the range hood body 1, and can be disassembled and installed as needed. When sucking out the oil fume, the oil in the oil fume will adhere to the inner wall of the exhaust hood 2 and the impeller on the fan 3, thereby forming oil fume dirt, which can then be cleaned using the first cleaning component and the second component.

[0026] The first cleaning assembly includes a servo motor 701 installed on the back of the exhaust hood 2, and a cleaning block 703 slidably connected to the exhaust hood 2. The output shaft end of the servo motor 701 is fixedly connected to a threaded rod 702, and the threaded rod 702 is threadedly connected to a screw ring set on the back of the cleaning block 703.

[0027] The servo motor 701 is installed on the back of the smoke exhaust hood 2. When the servo motor 701 is powered on and started, it can drive the threaded rod 702 to rotate forward and reverse, and then through the threaded connection with the screw ring fixed on the back of the cleaning block 703, it can drive the cleaning block 703 to slide back and forth on the outer surface of the smoke exhaust hood 2, thereby achieving the purpose of cleaning the oil smoke and dirt attached to the surface of the smoke exhaust hood 2.

[0028] The first cleaning component also includes a sleeve 704 and a cover plate 705 hinged to the range hood body 1, the inner wall of the sleeve 704 is slidably connected to a slide rod 706 hinged to the cover plate 705, and the inner wall of the sleeve 704 is provided with a buffer spring 707 whose two ends are respectively fixed to the sleeve 704 and the slide rod 706.

[0029] After the cleaning block 703 moves, it can drive the sleeve 704 to move, and then drive the slide rod 706 to move through the buffer spring 707 fixed in the inner wall of the sleeve 704, thereby driving the cover plate 705 to rotate with its hinge with the range hood body 1 as the center of the circle, so as to carry out subsequent extraction of oil fume exhaust gas.

[0030] After the sleeve 704 moves, it can drive the slide bar 706 to slide in its inner wall, thereby compressing the buffer spring 707, causing it to produce elastic deformation, thereby buffering the movement of the slide bar 706. The cover plate 705 is in a retracted state in the initial state, which can protect the range hood body 1 and reduce the entry of external dust into the interior.

[0031] The second cleaning component includes an electric push rod 801 installed on the outer surface of the range hood body 1, and the output end of the electric push rod 801 is rotatably connected to the cleaning ring 802, and the cleaning ring 802 is slidably connected to the impeller in the fan 3. The electric push rod 801 is installed on the outer surface of the range hood body 1. When the electric push rod 801 is powered on and started, its output end is extended and retracted, which can drive the cleaning ring 802 to slide back and forth on the impeller in the fan 3, thereby cleaning the oil smoke attached to the impeller, and the electric push rod 801 and the cleaning ring 802 are rotatably connected, which does not affect the normal rotation of the fan 3.

[0032] Please refer again Figure 1 and Figure 5 The inner wall of the range hood body 1 is fixedly connected with a support block 9, the inner wall of the support block 9 is inlaid with a bearing, and the inner ring of the bearing is fixedly connected to the outer surface of the threaded rod 702. By providing the support block 9 and the bearing, the threaded rod 702 can be made more stable when rotating, and the resistance of the threaded rod 702 when rotating can be reduced, thereby avoiding the jamming and swinging of the threaded rod 702 during use.

[0033] After the bearing has been used for a period of time, lubricating oil can be applied between its inner and outer rings to ensure normal lubrication during rotation, reduce friction and wear, and thus extend its service life.

[0034] Please refer again Figure 1 and Figure 5 Two fixed blocks 10 are fixedly connected to the inner wall of the range hood body 1, and a guide rod 11 fixed to the fixed blocks 10 is arranged between the two fixed blocks 10, and the guide rod 11 is slidably connected with a fixed ring arranged on the back of the cleaning block 703. The fixing ring fixed on the back of the cleaning block 703 slides up and down on the outer surface of the guide rod 11, so that the up and down movement of the cleaning block 703 can be guided, making it more stable during the up and down movement.

[0035] The outer surface of the guide rod 11 can be polished and smeared with lubricating oil, which can reduce the resistance of the guide rod 11 when sliding in the reserved hole on the fixing ring fixed on the back of the cleaning block 703, thereby avoiding jamming of the movement of the cleaning block 703.

[0036] When the present invention is in use, it can absorb the oil fume waste gas and automatically clean the oil fume attached to the oil fume waste gas exhaust hood and the impeller, so as to avoid the oil fume waste gas blocking the exhaust port and reduce the trouble of reassembly. At the same time, it can monitor the flow rate of the oil fume waste gas absorption in real time and automatically adjust the regulating valve 6 in the exhaust pipe to ensure that the oil fume waste gas can maintain a relatively constant flow rate when the fan 3 is working to enter the subsequent purification equipment, thereby improving the purification effect and reducing the harm to the environment and human body.

[0037] The working principle of the self-cleaning fume exhaust hood designed by the present invention is as follows: 1. Startup and initial state Preparation before starting: The exhaust hood 2, fan 3 and control components (such as control panel 4, servo motor 701, electric push rod 801, etc.) in the range hood body 1 are all in standby mode. At this time, the cover plate 705 in the first cleaning component is in a retracted state to protect the range hood body 1 and reduce the entry of external dust.

[0038] Control element start: Start the range hood through the control panel 4 to prepare for the suction and treatment of the exhaust gas.

[0039] 2. Absorption and treatment of oil fume waste gas The exhaust hood and the fan work: After the fan 3 is started, suction is generated to suck the oil fume exhaust gas into the interior of the range hood body 1 through the exhaust hood 2.

[0040] Flow rate monitoring and regulation: The smoke flow meter 5 in the range hood body 1 monitors the flow rate of the oil fume exhaust gas in real time and feeds the data back to the control panel 4. The control panel 4 automatically adjusts the regulating valve 6 in the exhaust pipe according to the flow rate data to ensure that the oil fume exhaust gas maintains a relatively constant flow rate to enter the subsequent purification equipment under the action of the fan 3, thereby improving the purification effect.

[0041] 3. Automatic cleaning process Exhaust hood cleaning: Start the servo motor: The servo motor 701 is powered on and started, driving the threaded rod 702 to rotate forward and reverse.

[0042] Movement of the cleaning block: The threaded rod 702 is connected to the screw ring fixed on the back of the cleaning block 703 through a threaded connection, so that the cleaning block 703 can slide back and forth on the outer surface of the exhaust hood 2 to clean the oil smoke and dirt attached to the surface of the exhaust hood 2.

[0043] Cover plate expansion and folding: The movement of the cleaning block 703 drives the sleeve 704 to move, and through the action of the buffer spring 707 and the slide rod 706, the cover plate 705 rotates around the hinge between it and the range hood body 1, thereby achieving expansion and folding, so as to assist in the absorption of oil fume exhaust gas and the protection of the range hood body.

[0044] Fan cleaning: Start the electric push rod: The electric push rod 801 is powered on and started, and its output end is extended and retracted, driving the cleaning ring 802 to slide back and forth on the impeller of the fan 3 to clean the oil smoke attached to the impeller.

[0045] No influence on the rotation of the fan: Since the electric push rod 801 and the cleaning ring 802 are rotatably connected, the cleaning process will not affect the normal rotation of the fan 3.

[0046] 4. Termination and subsequent maintenance Turn off the equipment: After the oil fume exhaust gas is treated, the fan 3, the servo motor 701 and the electric push rod 801 and other equipment are turned off through the control panel 4, and the range hood enters the standby state.

[0047] Centralized cleaning: The collected oil fume exhaust gas is centrally cleaned through the collection tank 12 on the bottom surface of the range hood body 1, which is convenient for subsequent treatment.

[0048] Maintenance: Regularly check and maintain the equipment, such as applying lubricating oil to the bearings and guide rods 11, to ensure smooth operation of the equipment and extend its service life.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-cleaning fume exhaust hood, comprising a range hood body (1), characterized in that: A detachable exhaust hood (2) and a fan (3) are installed inside the range hood body (1), as well as a control panel (4) for controlling the start and stop of the range hood body (1) and a flue gas flow meter (5) for detecting the flow rate of exhaust gas. The upper surface of the range hood body (1) is connected to a regulating valve (6) for regulating the flow rate of exhaust gas in the exhaust duct. A first cleaning component for cleaning the exhaust gas attached to the surface of the exhaust hood (2) and a second cleaning component for cleaning the exhaust gas attached to the surface of the fan (3) are arranged inside the range hood body (1).

2. The self-cleaning fume exhaust hood according to claim 1, characterized in that: The first cleaning component comprises a servo motor (701) mounted on the back of the exhaust hood (2), and a cleaning block (703) slidably connected to the exhaust hood (2), the output shaft end of the servo motor (701) being fixedly connected to a threaded rod (702), and the threaded rod (702) being threadedly connected to a screw ring provided on the back of the cleaning block (703).

3. The self-cleaning fume exhaust hood according to claim 1, characterized in that: The first cleaning component further comprises a sleeve (704) and a cover plate (705) hinged to the range hood body (1); the inner wall of the sleeve (704) is slidably connected to a slide rod (706) hinged to the cover plate (705); and the inner wall of the sleeve (704) is provided with a buffer spring (707) with two ends respectively fixed to the sleeve (704) and the slide rod (706).

4. The self-cleaning fume exhaust hood according to claim 2, characterized in that: A support block (9) is fixedly connected to the inner wall of the range hood body (1), a bearing is inlaid on the inner wall of the support block (9), and the inner ring of the bearing is fixedly connected to the outer surface of the threaded rod (702).

5. The self-cleaning fume exhaust hood according to claim 2, characterized in that: Two fixing blocks (10) are fixedly connected to the inner wall of the range hood body (1), a guide rod (11) fixed to the fixing blocks (10) is arranged between the two fixing blocks (10), and the guide rod (11) is slidably connected to a fixing ring arranged on the back of the cleaning block (703).

6. The self-cleaning fume exhaust hood according to claim 1, characterized in that: The second cleaning component comprises an electric push rod (801) mounted on the outer surface of the range hood body (1), the output end of the electric push rod (801) being rotatably connected to a cleaning ring (802), and the cleaning ring (802) being slidably connected to an impeller in the fan (3).

7. The self-cleaning fume exhaust hood according to claim 1, characterized in that: A detachable collecting tank (12) is installed on the bottom surface of the range hood body (1), and a nameplate (13) is fixedly connected to the inner wall of the range hood body (1).

8. The self-cleaning fume exhaust hood according to claim 1, characterized in that: Two symmetrical lighting lamps (14) are installed on the inner wall of the range hood body (1), and both of the two lighting lamps (14) are electrically connected to the control panel (4).

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