CN112879321A

CN112879321A - Noise reduction smoke ventilator suitable for open kitchen

Info

Publication number: CN112879321A
Application number: CN202110207383.XA
Authority: CN
Inventors: 王雨
Original assignee: Luzhou Shaoguang Zhizao Technology Co ltd
Current assignee: Luzhou Shaoguang Zhizao Technology Co ltd
Priority date: 2021-02-25
Filing date: 2021-02-25
Publication date: 2021-06-01

Abstract

The invention discloses a noise-reducing range hood suitable for an open kitchen, which comprises a main shell, wherein a motor cover is fixedly arranged at the rear end of the main shell through bolts, a motor fixing groove is formed in the inner side of the motor cover, a motor is arranged on the front side of the motor fixing groove, the rear end of the motor is buckled in the motor fixing groove, and the outer side of the motor is fixed on the motor cover outside the motor fixing groove through a high-strength self-tapping screw; the inside of main casing body installs the spacing shaft barrel of spray rinsing. According to the invention, the accumulation state of oil stains on the impeller is judged by detecting the working state of the motor, and the impeller is cleaned in time, so that the phenomenon that the surface is uneven due to the accumulation of the oil stains and the generation of whistling sound during high-speed rotation is avoided, the impeller is automatically cleaned in time, the phenomenon that the whistling sound is generated during the rotation due to the uneven surface is fundamentally avoided, and the possibility of unstable rotation of the impeller due to the accumulation of the oil stains is effectively reduced.

Description

Noise reduction smoke ventilator suitable for open kitchen

Technical Field

The invention relates to the technical field of range hoods, in particular to a noise-reducing range hood suitable for an open kitchen.

Background

The range hood has the following reasons due to large sound:

1. the installation of smoke ventilator is insecure: if the cigarette machine is installed unstably, the cigarette machine can be caused to resonate with the machine in the working process, so that noise is generated. The solution is to re-fix the range hood.

2. Improper installation of the check valve: if the check valve is provided with a problem, the smoke exhaust effect of the range hood can be directly reduced, so that noise is generated. The solution is to reinstall the non-return valve.

3. Deformation and improper installation of the wind wheel: due to the fact that oil stains are accumulated when the wind wheel is used for a long time, even deformation and aging are caused, and operation imbalance is caused. The solution is to replace the wind wheel or clean the wind wheel, and if the wind wheel is not installed properly, the wind wheel can be installed again.

4. The cigarette machine is not cleaned for a long time: therefore, the oil accumulation of the motor, the turbine and the internal components of the range hood is excessive, the fan is unstable in rotation, the range hood is noisy, and the range hood is required to be cleaned regularly.

5. Kitchen air is not circulated: the ventilation in the kitchen is required to be kept frequently, so that negative pressure can be prevented from being formed in the kitchen, and the smoke exhaust effect of the range hood can be guaranteed.

The long-term work of guaranteeing the cigarette machine, accomplish at first that regularly wash smoke ventilator, will often wash organism outward appearance and filter screen, especially the oil on the impeller, long-term accumulated oil can lead to the impeller surface unevenness, can produce when rotating at a high speed and exhale and whistle the sound, bring great noise, and the people can't accomplish the operational aspect of real-time check cigarette machine, and wash frequently, make the problem that the surface unevenness produced the noise when rotating with the greasy dirt of solution accumulation, provide a noise reduction smoke ventilator who is applicable to open kitchen for this.

Disclosure of Invention

Aiming at the problems in the related art, the invention provides a noise-reducing range hood suitable for an open kitchen, which can be cleaned in time according to the using condition of the range hood, so that oil stains are prevented from being accumulated for a long time, and the problems that the surface of an impeller is uneven due to the accumulation of the oil stains in the using process of the existing range hood, and a whistle is generated when the range hood rotates during work, namely noise is generated are solved.

The technical scheme of the invention is realized as follows:

a noise-reducing range hood suitable for an open kitchen comprises a main shell, wherein a motor cover is fixedly mounted at the rear end of the main shell through bolts, a motor fixing groove is formed in the inner side of the motor cover, a motor is arranged on the front side of the motor fixing groove, the rear end of the motor is buckled in the motor fixing groove, and the outer side of the motor is fixed on the motor cover outside the motor fixing groove through a high-strength self-tapping screw; the inner part of the main shell is provided with a spray-washing limiting shaft cylinder, the inner part of the spray-washing limiting shaft cylinder is provided with an impeller in a fitting manner, the output end of a motor is fixedly connected with one end of the impeller, the front side of the impeller is provided with a sealing ring for sealing, an air inlet ring and an oil interception cover are arranged in a matching manner with the sealing ring, the air inlet ring is fitted on the inner side of the oil interception cover, the oil interception cover is fixed on the front side of the spray-washing limiting shaft cylinder by screws, one side of the sealing ring is tightly fitted with one end of the inner side of the oil interception cover, and the other side of the sealing ring is tightly fitted with; and an oil cup is fixedly arranged on the front side of the oil interception cover.

Furthermore, the front side of motor adds and is equipped with the carousel that is used for being connected rather than the output shaft, and the outside of carousel adds and is equipped with the supporting shaft pole, and the carousel has the ring positioning seat that contacts with the spacing beam barrel of spray rinsing through the supporting shaft pole is external, and the supporting shaft pole is provided with five, and five supporting shaft poles are arranged in the outside of carousel such as angle, form the guiding gutter for circulating the flue gas between two adjacent supporting shaft poles.

Furthermore, the spray washing limiting shaft cylinder comprises an outer positioning shaft cylinder, a spray positioning rotary cylinder and a wind wheel supporting seat, the outer side of the outer positioning shaft cylinder is fixedly connected with the inner cavity wall of the main shell, annular grooves are formed in the front end and the rear end of the inner side of the outer positioning shaft cylinder, positioning ring protrusions are uniformly formed in the front end and the rear end of the outer side of the spray positioning rotary cylinder in a pouring mode, the spray positioning rotary cylinder is fixedly embedded in the annular grooves through the positioning ring protrusions and connected with the outer positioning shaft cylinder, high-pressure nozzles are formed in the spray positioning rotary cylinders on the protruding sides of the positioning rings at two ends, a liquid guide hole is formed in the side end of the outer positioning shaft cylinder and is in conduction connection with the high-pressure nozzles, a cleaning liquid storage barrel is additionally arranged at the side end of the main shell, the liquid outlet end of the cleaning liquid storage barrel is; the wind wheel supporting seat is additionally arranged in the jet positioning rotary drum, a liquid guide strip-shaped groove hole is formed in the wind wheel supporting seat at a first equal angle, the high-pressure nozzles and the liquid guide strip-shaped groove hole are arranged in a one-to-one correspondence mode, and the impeller is additionally arranged in the wind wheel supporting seat and connected with the output end of the motor.

Furthermore, a touch screen is additionally arranged at the side end of the main shell, a processor is additionally arranged in the touch screen, the touch screen is electrically connected with the processor, a wiring pin bank J1 is externally connected with the processor, 1 pin of the wiring pin bank J1 is connected to the 5 pin of the relay K1, 2 pins of the wiring pin bank J1 are connected to the 6 pin of the relay K1, 3 pins of the wiring pin bank J1 are connected to the 7 pin of the relay K1, 4 pins of the wiring pin bank J1 are connected to the 8 pin of the relay K1, 1 pin of the relay K1 is connected to the positive output end of the motor, 4 pins of the relay K1 are connected to the negative output end of the motor, the positive output end of the motor is connected to the input end of the transformer U and to the input end of the current transformer a, the output end of the voltage transformer U is connected to the negative output end of the motor, the output end of the current transformer a is connected to the 1 pin of the relay K539, the 3 feet of the relay K1 are connected to the output end of the indicator light LED2, and the input end of the indicator light LED1 is connected with the input end of the indicator light LED2 and then connected to the negative electrode output end of the motor.

Further, the indicator light LED1 flashes a green alarm signal light, the indicator light LED2 flashes a red alarm signal light, the indicator light LED1 flashes and the indicator light LED2 turns off to indicate normal work, and the indicator light LED2 flashes and the indicator light LED1 turns off to indicate abnormal work.

Furthermore, the drain has been seted up to the bottom of wind wheel supporting seat, and the drain is connected with the sewage storage box through the blow off pipe, and the stock solution volume of sewage storage box is greater than high-pressure spout single blowout washing liquid total amount, and the sewage storage box installs the side lower extreme at the main casing additional.

Furthermore, the lower extreme of sewage storage box adds and is equipped with the plug valve, adds on the main casing body of touch-control screen side and is equipped with power button and shift knob, and shift knob's control end is connected with the treater electricity, and shift knob's signal end is connected with the plug valve electricity, and power button is connected to the main power supply and supplies power for touch-control screen, treater and motor.

Furthermore, an alarm is additionally arranged on the main shell at the side end of the touch screen, the alarm is electrically connected with the processor, and the processor controls the alarm to give an alarm when the electric energy consumption value in unit time is larger than a set threshold value.

The invention has the beneficial effects that:

1. according to the noise-reducing range hood suitable for the open kitchen, when the motor works, the rotating disc is driven to rotate so as to drive the front-end impeller to rotate, smoke is extracted, negative pressure is formed inside the smoke, the smoke is continuously extracted, the annular positioning seat is fixedly connected with the wind wheel supporting seat, the wind wheel supporting seat is additionally arranged in the jet positioning rotary drum, the stability of rotation of the impeller can be effectively guaranteed during rotation, and noise caused by unstable operation due to deviation is avoided.

2. The processor compares the detected voltage value and current value with the voltage value and current value of the normal operation of the motor, when fluctuation occurs, the resistance received by the impeller is increased, when the fluctuation is detected, the impeller is cleaned, the phenomenon that the surface of the impeller is uneven due to oil accumulated on the impeller for a long time, and the phenomenon that a whistling sound is generated when the impeller rotates at a high speed to generate larger noise is avoided, so that the phenomenon that the whistling sound is generated when the surface is uneven rotates is fundamentally avoided.

3. According to the noise-reducing range hood suitable for the open kitchen, when the impeller is cleaned, the indicator light LED1 is on to indicate normal work, and when the indicator light LED2 is on, the situation that the operation is unstable due to instable installation, so that noise is generated is indicated, and at the moment, the maintenance and the installation are required in time, so that the reason for generating the noise can be analyzed, and the problem can be timely solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is an exploded view of the overall structure of the present invention;

FIG. 2 is a view showing the connection between the spray rinsing limit shaft cartridge and the main housing according to the present invention;

FIG. 3 is a motor structure view of the present invention;

FIG. 4 is an exploded view of the spray wash limit shaft cartridge of the present invention;

FIG. 5 is a view showing the connection state of the impeller and the motor according to the present invention;

FIG. 6 is a schematic view of the spray cleaning limit shaft of the present invention showing the introduction of cleaning fluid and the drainage;

FIG. 7 is a schematic diagram of the detection of the operating power of the motor of the present invention;

fig. 8 is a schematic block diagram of the operation of the present invention.

In the figure:

1. a main housing; 2. a bolt; 3. a motor cover; 4. a motor fixing groove; 5. a motor; 51. a turntable; 52. a support shaft; 53. a circular ring positioning seat; 6. a high-strength self-tapping screw; 7. spraying and washing the limiting shaft barrel; 701. an outer positioning shaft cylinder; 702. a spray positioning drum; 703. a wind wheel supporting seat; 704. an annular groove; 705. the positioning ring is convex; 706. a high pressure nozzle; 707. a drain hole; 708. a cleaning liquid storage barrel; 709. a pressure pump; 710. a liquid-conducting slotted hole; 8. an impeller; 9. a seal ring; 10. an air inlet ring; 11. an oil interception cover; 12. an oil cup; 13. A touch screen; 14. a processor; 15. a sewage draining outlet; 16. a blow-off pipe; 17. a sewage storage tank; 18. a plug valve; 19. a power button; 20. a switch button; 21. an alarm.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.

Referring to fig. 1-6, a noise-reducing range hood suitable for an open kitchen comprises a main shell 1, wherein a motor cover 3 is fixedly mounted at the rear end of the main shell 1 through a bolt 2, a motor fixing groove 4 is formed in the inner side of the motor cover 3, a motor 5 is arranged on the front side of the motor fixing groove 4, the rear end of the motor 5 is buckled in the motor fixing groove 4, and the outer side of the motor 5 is fixed on the motor cover 3 outside the motor fixing groove 4 through a high-strength self-tapping screw 6; a spray washing limiting shaft cylinder 7 is arranged inside the main shell 1, an impeller 8 is attached inside the spray washing limiting shaft cylinder 7, the output end of the motor 5 is fixedly connected with one end of the impeller 8, a sealing ring 9 for sealing is arranged on the front side of the impeller 8, an air inlet ring 10 and an oil interception cover 11 are arranged in cooperation with the sealing ring 9, the air inlet ring 10 is attached to the inner side of the oil interception cover 11, the oil interception cover 11 is fixed to the front side of the spray washing limiting shaft cylinder 7 through screws, one side of the sealing ring 9 is closely attached to one end of the inner side of the oil interception cover 11, and the other side of the sealing ring 9 is closely attached to the front side of the spray washing limiting shaft cylinder 7; an oil cup 12 is fixedly arranged on the front side of the oil interception cover 11.

Referring to fig. 3, in the above embodiment, a turntable 51 connected to an output shaft of the motor 5 is additionally installed on the front side of the motor, a supporting shaft rod 52 is additionally installed on the outer side of the turntable 51, the turntable 51 is externally connected to a circular positioning seat 53 contacting with the spray-washing limiting shaft barrel 7 through the supporting shaft rod 52, five supporting shaft rods 52 are arranged on the outer side of the turntable 51 at equal angles, and a flow guide groove for circulating the flue gas is formed between two adjacent supporting shaft rods 52.

Through adopting above-mentioned technical scheme, the carousel 51 that sets up is used for connecting motor 5's output shaft, play the supporting role, the supporting shaft 52 plays the supporting role to ring positioning seat 53, inject ring positioning seat 53's position through the spacing beam barrel 7 of spray rinsing, thereby inject carousel 51's position through supporting shaft 52, just also ensured motor 5's output shaft pivoted stable form, avoid motor 5 output shaft to take place the skew, thereby avoid 8 rotations unstability of impeller and the problem emergence of noise production.

Referring to fig. 3-5, in the above embodiment, the spray washing limit shaft cylinder 7 includes an outer positioning shaft cylinder 701, a spray positioning rotating cylinder 702 and a wind wheel supporting seat 703, the outer side of the outer positioning shaft cylinder 701 is fixedly connected with the inner cavity wall of the main housing 1, the inner front end and the inner rear end of the outer positioning shaft cylinder 701 are both provided with annular grooves 704, the outer front end and the outer rear end of the spray positioning rotating cylinder 702 are integrally cast with positioning ring protrusions 705, the spray positioning rotating cylinder 702 is fixedly embedded in the annular grooves 704 through the positioning ring protrusions 705 and connected to the outer positioning shaft cylinder 701, the spray positioning rotating cylinder 702 inside the positioning ring protrusions 705 at both ends is provided with a high-pressure nozzle 706, the side end of the outer positioning shaft cylinder 701 is provided with a liquid guiding hole 707, the liquid guiding hole 707 is in communication connection with the high-pressure nozzle 706, the side end of the main housing 1 is provided with a cleaning liquid storage barrel 708, the liquid outlet end of the, a pressure pump 709 is additionally arranged on the conduit; the wind wheel supporting base 703 is additionally arranged in the jet positioning rotary drum 702, a liquid guide strip-shaped groove hole 710 is formed in the wind wheel supporting base 703 at an equal angle, the high-pressure nozzles 706 are arranged in one-to-one correspondence with the liquid guide strip-shaped groove hole 710, and the impeller 8 is additionally arranged in the wind wheel supporting base 703 and connected with the output end of the motor 5.

By adopting the technical scheme, the wind wheel supporting seat 703 plays an external supporting role, the spraying positioning rotary drum 702 is used for arranging the high-pressure nozzles 706, the spraying positioning rotary drum 702 is connected with the external positioning shaft barrel 701 in a sealing manner, the height of the positioning ring protrusion 705 is larger than the depth of the annular groove 704, a liquid storage cavity is formed inside, cleaning liquid guided into the liquid guide hole 707 enters the liquid storage cavity and is sprayed out through the high-pressure nozzles 706, and the cleaning liquid is sprayed onto the impeller 8 from various angles through the liquid guide strip-shaped groove hole 710 to clean the impeller 8.

Referring to fig. 7-8, in the above embodiment, a touch panel 13 is additionally installed at a side end of the main housing 1, a processor 14 is additionally installed inside the touch panel 13, the touch panel 13 is electrically connected to the processor 14, a connection pin J1 is externally connected to the processor 14, pin 1 of the connection pin J1 is connected to pin 5 of the relay K1, pin 2 of the connection pin J1 is connected to pin 6 of the relay K1, pin 3 of the connection pin J1 is connected to pin 7 of the relay K1, pin 4 of the connection pin J1 is connected to pin 8 of the relay K1, pin 1 of the relay K1 is connected to a positive output terminal of the motor 5, pin 4 of the relay K1 is connected to a negative output terminal of the motor 5, a positive output terminal of the motor 5 is connected to an input terminal of the transformer U and to an input terminal of the current transformer a, an output terminal of the voltage transformer U is connected to pin 1 of the relay K1, a pin 2 of the relay K1 is connected to the output end of the indicator light LED1, a pin 3 of the relay K1 is connected to the output end of the indicator light LED2, and the input end of the indicator light LED1 is connected with the input end of the indicator light LED2 and then connected to the negative electrode output end of the motor 5.

By adopting the technical scheme, the voltmeter U detects the working voltage of the motor 5 in real time, the current transformer A detects the working current of the motor 5 in real time, the processor 14 is internally provided with the working voltage and the working current of the motor 5 in normal operation, the voltmeter U transmits the detected voltage value and the detected current value of the current transformer A to the processor 14, the processor 14 compares the detected voltage value and the detected current value with the voltage value and the detected current value of the normal operation, when a fluctuation occurs, indicating an increase in resistance received as the impeller 8 rotates, when a fluctuation is detected, the booster pump 709 is controlled to be opened to spray cleaning liquid from the high-pressure nozzle 706 to clean the impeller 8, so that the surface of the impeller 8 is prevented from being uneven due to long-term accumulation of oil on the impeller 8, the whistling sound can be generated during high-speed rotation, and the loud noise is brought, so that the phenomenon of the whistling sound generated during the rotation due to the uneven surface is fundamentally avoided.

Referring to fig. 7-8, in the above embodiment, the indicator LED1 flashes a green alarm signal, the indicator LED2 flashes a red alarm signal, the indicator LED1 flashes and turns off the indicator LED2 to indicate normal operation, and the indicator LED2 flashes and turns off the indicator LED1 to indicate abnormal operation.

Through adopting above-mentioned technical scheme, wash the back when impeller 8, pilot lamp LED1 shows that work is normal, when pilot lamp LED2 was bright, then explain not make to rotate because of impeller 8 is long-pending dirty and be hindered and lead to the work abnormal, but lead to the operation unstability because of the installation is unstable to the noise generation needs in time to overhaul this moment, installs again.

Referring to fig. 6, in the above embodiment, the bottom end of the wind wheel support base 703 is provided with the sewage outlet 15, the sewage outlet 15 is connected to the sewage storage tank 17 through the sewage discharge pipe 16, the liquid storage amount of the sewage storage tank 17 is greater than the total amount of the cleaning liquid sprayed by the high-pressure nozzle 706 once, and the sewage storage tank 17 is additionally installed at the lower end of the main housing 1.

Through adopting above-mentioned technical scheme, through the sewage after the sewage storage box 17 prestore washing, because impeller 8 greasy dirt accumulation is slower, therefore impeller 8 only can regularly wash, that is to say, sewage storage box 17 regularly clear up can.

Referring to fig. 6, in the above embodiment, a plug valve 18 is additionally installed at the lower end of the sewage storage tank 17, a power button 19 and a switch button 20 are additionally installed on the main housing 1 at the side end of the touch screen 13, the control end of the switch button 20 is electrically connected with the processor 14, the signal end of the switch button 20 is electrically connected with the plug valve 18, and the power button 19 is connected to a main power supply to supply power to the touch screen 13, the processor 14 and the motor 5.

By adopting the technical scheme, when the sewage in the sewage storage tank 17 is cleaned, only the plug valve 18 needs to be opened, the sewage discharged from the lower part is connected by the container, and the plug valve 18 is closed after the sewage is discharged; the power button 19 is a switch of the motor 5, and the switch button 20 is used for controlling the switch of the pressure pump 709, and is controlled by the button, so that the operation is convenient.

Referring to fig. 1-2, in the above embodiment, an alarm 21 is additionally installed on the main housing 1 at the side end of the touch screen 13, the alarm 21 is electrically connected to the processor 14, and the processor 14 controls the alarm 21 to give an alarm when the power consumption value is greater than the set threshold value in unit time.

Through adopting above-mentioned technical scheme, alarm 21 only plays the suggestion effect, and it is too much to inform the oil stain accumulation on impeller 8, and suggestion user of service observes smoke ventilator's operating condition.

To further better explain the present invention, the specific embodiments of the present invention for reducing noise are as follows:

referring to fig. 1-8, when the power button 19 is turned on, the motor 5 starts to work when powered on, the output end of the motor 5 drives the turntable 51 to rotate so as to drive the front impeller 8 to rotate, so that smoke is extracted and negative pressure is formed inside the smoke, thereby continuously extracting the smoke, the annular positioning seat 53 is fixedly connected with the wind wheel supporting seat 703, the wind wheel supporting seat 703 is additionally arranged in the jet positioning drum 702, the rotation stability of the impeller 8 can be effectively guaranteed during rotation, and noise caused by unstable operation due to deviation is avoided; secondly, when the surface of the impeller 8 is uneven due to the oil accumulated for a long time, a whistling sound is generated during high-speed rotation, so that a large noise is generated, the resistance applied during rotation of the impeller 8 is increased, the rotation speed of the impeller 8 is inevitably reduced under the condition that the power is not changed, the voltage is inevitably reduced, the current is inevitably reduced, the voltage value detected in real time is transmitted to the processor 14 by the voltage device U, the current value detected in real time is transmitted to the processor 14 by the current device a, the threshold value during normal operation is arranged in the processor 14, the detected voltage value and current value are compared with the normal threshold value by the processor 14 in real time, when the voltage value is in the normal range and the current value is smaller than the normal threshold value, the wind resistance received by the impeller 8 is large, oil stains on the impeller 8 are more, at this time, the processor 14 controls the pressure pump 709 to be opened, the pressure pump 709 pumps out the cleaning liquid in the cleaning liquid storage, the sewage is guided from the liquid guide hole 707, sprayed out from each high-pressure nozzle 706, passes through the liquid guide strip-shaped groove hole 710 and then is sprayed on the impeller 8 to clean the impeller 8, the wind resistance of the cleaned impeller 8 during working is reduced, the surface is smooth, no noise is generated during high-speed rotation, and therefore noise is reduced, and the sewage can be discharged when the cock valve 18 is opened by pressing the switch button 20 in the cleaned sewage storage tank 17.

In summary, according to the above technical solution of the present invention, the noise-reducing range hood applicable to the open kitchen provided by the present invention limits the position of the annular positioning seat 53 through the spray-washing limiting shaft cylinder 7, so that the position of the turntable 51 is limited through the supporting shaft rod 52, the stability of the rotation of the output shaft of the motor 5 is ensured, the output shaft of the motor 5 is prevented from being deviated, and the problem of noise generation due to unstable rotation of the impeller 8 is prevented; secondly, the processor 14 compares the detected voltage value and current value with the voltage value and current value of the normal operation of the motor 5, when fluctuation occurs, the resistance received by the impeller 8 during rotation is increased, when fluctuation is detected, the pressure pump 709 is controlled to be opened, the cleaning liquid is sprayed out from the high-pressure nozzle 706 to clean the impeller 8, and the phenomenon that the surface of the impeller 8 is uneven due to long-term accumulated oil on the impeller 8, and the generation of whistling sound and larger noise are caused during high-speed rotation is avoided, so that the phenomenon that the whistling sound is generated during rotation due to the uneven surface is fundamentally avoided; moreover, after impeller 8 washd, pilot lamp LED1 shows normally working, when pilot lamp LED2 was bright, then explain not make the rotation obstructed because of impeller 8 is long-pending dirty to lead to the work abnormal, but lead to the operation unstability because of the installation is unstable to the noise production, need in time overhaul this moment, install again, can separate out the reason that produces the noise, in time handle the problem that appears.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A noise-reducing cooking fume extractor suitable for open kitchens, comprising a main casing (1), characterized in that: the rear end of the main shell (1) is fixedly provided with a motor cover (3) through a bolt (2), the inner side of the motor cover (3) is provided with a motor fixing groove (4), the front side of the motor fixing groove (4) is provided with a motor (5), the rear end of the motor (5) is buckled in the motor fixing groove (4), and the outer side of the motor (5) is fixed on the motor cover (3) outside the motor fixing groove (4) through a high-strength self-tapping screw (6); the jet-cleaning type motor oil seal device is characterized in that a jet-cleaning limiting shaft cylinder (7) is mounted inside the main shell (1), an impeller (8) is mounted inside the jet-cleaning limiting shaft cylinder (7) in a fitting manner, the output end of a motor (5) is fixedly connected with one end of the impeller (8), a sealing ring (9) for sealing is arranged on the front side of the impeller (8), an air inlet ring (10) and an oil intercepting cover (11) are arranged in a matching manner with the sealing ring (9), the air inlet ring (10) is fitted on the inner side of the oil intercepting cover (11), the oil intercepting cover (11) is fixed on the front side of the jet-cleaning limiting shaft cylinder (7) by screws, one side of the sealing ring (9) is tightly fitted with one end of the inner side of the oil intercepting cover (11), and the other side of the sealing ring (9) is tightly fitted with; an oil cup (12) is fixedly arranged on the front side of the oil blocking cover (11).

2. The noise-reducing range hood suitable for the open kitchen according to claim 1, characterized in that a turntable (51) connected with an output shaft of the motor (5) is additionally arranged on the front side of the motor, a supporting shaft rod (52) is additionally arranged on the outer side of the turntable (51), a circular ring positioning seat (53) in contact with the spray-washing limiting shaft barrel (7) is externally connected to the turntable (51) through the supporting shaft rod (52), five supporting shaft rods (52) are arranged on the outer side of the turntable (51) at equal angles, and a flow guide groove for circulating smoke is formed between two adjacent supporting shaft rods (52).

3. The noise reduction range hood suitable for the open kitchen according to claim 2, wherein the spray-washing limit shaft cylinder (7) comprises an outer positioning shaft cylinder (701), a spray positioning rotary cylinder (702) and an air wheel supporting seat (703), the outer side of the outer positioning shaft cylinder (701) is fixedly connected with the inner cavity wall of the main shell (1), the inner front end and the inner rear end of the outer positioning shaft cylinder (701) are both provided with an annular groove (704), the outer front end and the outer rear end of the spray positioning rotary cylinder (702) are both cast with positioning ring protrusions (705), the spray positioning rotary cylinder (702) is fixedly embedded in the annular groove (704) through the positioning ring protrusions (705) and connected with the outer positioning shaft cylinder (701), the spray positioning rotary cylinders (702) on the inner sides of the positioning ring protrusions (705) at the two ends are provided with high-pressure nozzles (706), the side end of the outer positioning shaft cylinder (701) is provided with a liquid guide hole (707), the liquid guide hole (707) is in conduction connection with the high-pressure nozzle (706), a cleaning liquid storage barrel (708) is additionally arranged at the side end of the main shell (1), the liquid outlet end of the cleaning liquid storage barrel (708) is connected to the inlet end of the liquid guide hole (707) through a conduit, and a pressure pump (709) is additionally arranged on the conduit; the wind wheel supporting seat (703) is additionally arranged in the jet positioning rotary drum (702), the liquid guide strip-shaped groove hole (710) is formed in the wind wheel supporting seat (703) at an equal angle, the high-pressure nozzles (706) and the liquid guide strip-shaped groove hole (710) are arranged in a one-to-one correspondence mode, and the impeller (8) is additionally arranged in the wind wheel supporting seat (703) and is connected with the output end of the motor (5).

4. The noise reduction range hood suitable for the open kitchen according to claim 3, wherein a touch screen (13) is additionally installed at the side end of the main housing (1), a processor (14) is additionally installed inside the touch screen (13), the touch screen (13) is electrically connected with the processor (14), a wiring pin bank J1 is externally connected with the processor (14), 1 pin of the wiring pin bank J1 is connected to 5 pins of a relay K1, 2 pins of the wiring pin bank J1 are connected to 6 pins of a relay K1, 3 pins of the wiring pin bank J1 are connected to 7 pins of a relay K1, 4 pins of the wiring pin bank J1 are connected to 8 pins of the relay K1, 1 pin of the relay K1 is connected to the positive output end of the motor (5), 4 pins of the relay K1 are connected to the negative output end of the motor (5), the positive output end of the motor (5) is connected to the input end of the transformer U and to the input end of the current transformer A, the output end of the voltage transformer U is connected to the negative output end of the motor (5), the output end of the current transformer A is connected to pin 1 of the relay K1, pin 2 of the relay K1 is connected to the output end of the indicator light LED1, pin 3 of the relay K1 is connected to the output end of the indicator light LED2, and the input end of the indicator light LED1 is connected to the negative output end of the motor (5) after being connected with the input end of the indicator light LED 2.

5. A noise reduction range hood as claimed in claim 4 wherein the indicator LED1 flashes a green alarm signal, the indicator LED2 flashes a red alarm signal, the indicator LED1 flashes and the indicator LED2 goes out to indicate normal operation, and the indicator LED2 flashes and the indicator LED1 goes out to indicate abnormal operation.

6. The noise-reducing range hood suitable for the open kitchen according to claim 5, wherein an alarm (21) is additionally arranged on the main shell (1) at the side end of the touch screen (13), the alarm (21) is electrically connected with the processor (14), and the processor (14) controls the alarm (21) to give an alarm when the consumed electric energy value is greater than a set threshold value in unit time.

7. The noise-reducing range hood suitable for the open kitchen according to claim 6, wherein a drain outlet (15) is formed in the bottom end of the wind wheel support base (703), the drain outlet (15) is connected with a sewage storage tank (17) through a drain pipe (16), the liquid storage amount of the sewage storage tank (17) is larger than the total amount of cleaning liquid sprayed by the high-pressure nozzles (706) at a time, and the sewage storage tank (17) is additionally arranged at the lower end of the side of the main shell (1).

8. The noise-reducing range hood suitable for the open kitchen according to claim 7, wherein a plug valve (18) is additionally arranged at the lower end of the sewage storage tank (17), a power button (19) and a switch button (20) are additionally arranged on the main shell (1) at the side end of the touch screen (13), the control end of the switch button (20) is electrically connected with the processor (14), the signal end of the switch button (20) is electrically connected with the plug valve (18), and the power button (19) is connected to a main power supply to supply power to the touch screen (13), the processor (14) and the motor (5).