CN111189087A

CN111189087A - Can clear up smoke ventilator of filter screen automatically

Info

Publication number: CN111189087A
Application number: CN202010025285.XA
Authority: CN
Inventors: 蒋凤歌; 李建科
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-01-10
Filing date: 2020-01-10
Publication date: 2020-05-22

Abstract

The invention discloses a range hood capable of automatically cleaning a filter screen, which comprises a cooking bench and a shell, wherein the shell is provided with a plurality of air inlets, a sealing plate is arranged at the position, close to the air inlets, of the shell, the sealing plate is connected with a sliding rail fixed on the inner wall of the shell, an electromagnet is arranged at the top of the sliding rail, the inner wall of the shell is fixedly connected with the filter screen, an oil box is arranged at the bottom of the shell, the filter screen is communicated with the oil box and is provided with an oil passage, and cleaning liquid is arranged in the. Has the advantages that: through the circuit setting of rectifier, current commutator and condenser for being converted into the direct current and charging the condenser to external alternating current when the impeller during operation simultaneously, make when finishing the operation, through the condenser time delay discharge function of direct current, realize the change to impeller drainage direction, and heat the clearance liquid that the boiling point is lower than oil in the oil box, make its evaporation, thereby to the effect of filter screen and separation plate clearance under the gas combined action of clearance liquid steam and recoil.

Description

Can clear up smoke ventilator of filter screen automatically

Technical Field

The invention relates to the technical field of smart homes, in particular to a range hood capable of automatically cleaning a filter screen.

Background

The kitchen ventilator is also called as a range hood, and is a kitchen appliance for purifying the kitchen environment. The kitchen ventilator is arranged above a kitchen stove, can rapidly pump away waste burnt by the stove and oil smoke harmful to human bodies generated in the cooking process, and exhaust the oil smoke out of a room, and simultaneously condenses and collects the oil smoke, thereby reducing pollution, purifying air and having the safety guarantee effects of gas defense and explosion prevention.

However, when the range hood is used, the oil fume is sucked into the shell before being diffused by the negative pressure made by the fan and passes through the filter screen and the separating plate with lower temperature, so that high-temperature oil vapor is liquefied into oil drops when meeting cold and is transferred into the oil box, however, because the food oil has certain viscosity, and the oil mist can be liquefied into small parts when passing through the filter screen below, the small parts can be attached to the two sides of the upper bottom and the lower bottom of the filter screen and the bottom of the separating plate to form an oil layer, the generation of the negative pressure of the fan is influenced, the adsorption efficiency of the oil fume is influenced, and after the range hood is used for a long time, the oil layer is thick and is difficult to clean

Disclosure of Invention

The invention aims to solve the problems that in the prior art, an oil layer is often deposited on a filter screen and a separation plate in a smoke extractor, the efficiency of absorbing oil smoke is influenced, the smoke extractor is difficult to clean, and the smoke extractor does not have the function of automatic cleaning.

In order to achieve the purpose, the invention adopts the following technical scheme: a range hood capable of automatically cleaning a filter screen comprises a cooking bench and a shell, wherein a plurality of air inlets are formed in the shell, a sealing plate is arranged at the position, close to the air inlets, of the shell, the sealing plate is connected with a sliding rail fixed on the inner wall of the shell, an electromagnet is arranged at the top of the sliding rail, the inner wall of the shell is fixedly connected with the filter screen, an oil box is arranged at the bottom of the shell, the filter screen is communicated with the oil box and is provided with an oil duct, and cleaning liquid is arranged in the oil;

the sealing plate is characterized in that a permanent magnet layer which is opposite to the electromagnet in the same polarity is arranged at one end, close to the electromagnet, of the sealing plate, the electromagnet is attached to the filter screen, a fan box is arranged at the top of the inner wall of the shell, an impeller is connected to the fan box in a rotating mode through a rotating shaft, a separating plate is arranged on one side, close to the impeller, of the fan box, and the oil box is fixedly connected with the shell through a buckle.

In the range hood capable of automatically cleaning the filter screen, the rotating shaft is fixedly connected with an external motor, the part of the shell, which is positioned in the fan box, is provided with the air outlet, and the inner wall of the oil box is embedded with the heating resistance wire.

In the self-cleaning water dispenser, the boiling point of the cleaning liquid is the DEG C and the cleaning liquid is dissolved in the alcohol of the food oil, the impeller is electrically connected with the capacitor, the rectifier and the current commutator, and the heating resistance wire is connected with the capacitor in series.

Compared with the prior art, the invention has the advantages that:

1. according to the invention, through twice condensation of the filter screen and the separation plate, oil smoke in high-temperature oil mist is separated, so that pollution components in externally discharged gas are reduced, and the impeller is connected with the capacitor, the rectifier and the current commutator, so that when a power supply is disconnected for use, the charging capacitor discharges in a delayed manner, the rotation direction of the impeller is changed through the connection of the current commutator, and positive pressure is output outwards, so that gas backflushing cleaning is performed on the filter screen and the separation plate, so that the adhesion of oil drops to the filter screen is reduced, and oil drop accumulation on the filter screen is reduced;

2. meanwhile, when the power supply is cut off, the capacitor conducts a circuit of the electromagnet, so that the sealing plate 4 is pushed downwards under the action of the repulsion force of the homopolarity of the electromagnet and the permanent magnet layer, the air inlet is sealed, the inside of the shell is in a closed environment, the heating resistance wire heats the cleaning solution at the moment, the cleaning solution with the boiling point lower than that of oil is evaporated firstly, and the evaporated cleaning solution steam is liquefied and re-liquefied by the filter screen due to the characteristic of being dissolved in the oil, so that the cleaning solution is dissolved in the oil and is dissolved in the oil layer at the lower end of the filter screen, slides downwards under the action of backflush gas and falls into an oil box below, and the filter screen and the separation plate are cleaned simultaneously;

3. because the liquid that falls into in the oil box contains oil and cleaning fluid simultaneously to both boiling points are different, make after next use, continue to heat, then oil is because not reaching the boiling point, still stays in the oil box, and cleaning fluid is because the boiling point is lower, is continued the evaporation, and continues to clear up filter screen and separator plate, makes its clearance have the function of recycling, and need not to supply cleaning fluid.

4. The filter screen sets up the slope setting, make the oil reservoir of filter screen upper end can make unset oil drip down under the effect of recoil gas, and in getting into the oil box along the oil duct, and because this body lampblack absorber is preheated by the clearance liquid that heat transfer made in the oil box when the kitchen range heating, thereby the time of clearance liquid evaporation has been reduced, simultaneously through the output malleation of impeller can in time compensate in the kitchen because the negative pressure air is absorbed in a large number and leads to rarefied condition, and for introducing fresh air in the kitchen, avoid causing the problem that oxygen is not enough or the air turbidity influences the life.

5. The impeller is connected with the rectifier, the current commutator and the capacitor in parallel through the circuit, so that output alternating current is converted into direct current through the rectifier, the current changes direction through the double-pole double-throw switch in the current commutator, the capacitor is charged, when the impeller is disconnected, the capacitor discharges in a delayed mode and outputs reverse direct current, the drainage wind direction of the impeller is changed, positive pressure is output indoors, and the filter screen and the separating plate are cleaned in a backflushing mode.

Drawings

Fig. 1 is a schematic structural diagram of a range hood capable of automatically cleaning a filter screen according to the present invention;

fig. 2 is a front view of a range hood capable of automatically cleaning a filter screen according to the present invention;

fig. 3 is a circuit diagram of a range hood capable of automatically cleaning a filter screen according to the present invention.

In the figure: the device comprises a shell 1, air inlet holes 2, an oil box 3, a sealing plate 4, a sliding rail 5, an electromagnet 6, a filter screen 7, a rotating shaft 8, an impeller 9, a fan box 10, a separating plate 11, an air outlet hole 12 and an oil duct 13.

Detailed Description

The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

Examples

Referring to fig. 1-3, a range hood capable of automatically cleaning a filter screen comprises a cooking bench and a shell 1, wherein the shell 1 is provided with a plurality of air inlet holes 2, the shell 1 is provided with a sealing plate 4 near the air inlet holes 2, the sealing plate 4 is connected with a sliding rail 5 fixed on the inner wall of the shell 1, the top of the sliding rail 5 is provided with an electromagnet 6, the inner wall of the shell 1 is fixedly connected with a filter screen 7, the bottom of the shell 1 is provided with an oil box 3, the filter screen 7 is communicated with the oil box 3 and is provided with an oil duct 13, and cleaning;

the end of the sealing plate 4 close to the electromagnet 6 is provided with a permanent magnet layer which is homopolar and opposite to the electromagnet 6, the filter screen 7 is obliquely arranged, and the lower end of the filter screen is positioned at one side far away from a cooking bench, so that oil drops formed by liquefaction enter the oil box 3 through an oil duct 13 under the action of self gravity when normal oil smoke is separated, the top of the inner wall of the shell 1 is provided with a fan box 10, the fan box 10 is rotatably connected with an impeller 9 through a rotating shaft 8, one side of the fan box 10 close to the impeller 9 is provided with a separating plate 11, an eddy current groove is arranged in the separating plate 11, so that the flow path and the flow direction of the oil smoke are instantly physically changed when the oil mist passes through at high speed, as the oil molecules have large density and large volume, the oil smoke is separated by centrifugal force in the change and directly thrown on the filter screen 7, the hot oil smoke is condensed into liquid when encountering the, the oil box 3 can be drawn out and the residual oil can be poured out, the rotating shaft 8 is fixedly connected with an external motor, the air outlet 12 is formed in the part, located in the fan box 10, of the shell 1, and the heating resistance wire is embedded in the inner wall of the oil box 3 and can heat the liquid in the oil box 3.

The cleaning liquid is alcohol with the boiling point of 78 ℃ and dissolved in food oil, after the alcohol is heated to form alcohol vapor, the alcohol is liquefied into liquid again when contacting with the cooler filter screen 7 and the separating plate 11 and is dissolved with the oil layer on the surface of the alcohol, the impeller 9 is electrically connected with a capacitor, a rectifier and a current commutator, a heating resistance wire is connected with the capacitor in series, wherein the rectifier, the capacitor and the current commutator are simultaneously connected into a branch circuit connected with the impeller 9 in parallel, so that alternating current output by an external power supply is converted into direct current, and the electromagnet 6 and the capacitor are positioned in the same branch circuit, so that when the capacitor discharges, the electromagnet 6 pushes the sealing plate 4 downwards under the action of magnetic repulsion with the permanent magnet and seals the shell 1, and the cleaning liquid cannot leak outwards when being evaporated and cleaned.

When the invention is used, the circuit diagram is shown in fig. 3, wherein the external alternating current power supply is set as s 1; rectifier arrangement s 2; capacitor set at s 3; the current commutator is set to s 4; the heating resistance wire is set to s 5; electromagnet 6 is arranged as s 6; the impeller is set as s7, wherein, under the normal working state, the branch where the impeller s7 is located normally works, the branch where the capacitor s3 is located converts the alternating current into the direct current under the rectifying action of the rectifier s2, changes the current direction in the double-pole double-throw switch in the current commutator, charges the two ends of the capacitor s3, when the circuit is stable, namely the potential difference between the two ends of the capacitor s3 is the same as the potential of the alternating current power supply s1, the branch where the capacitor s3 is located is disconnected, and the branch where the impeller s7 is located normally works, outputs negative pressure indoors, adsorbs oil mist into the shell 1 to be separated from the oil mist and then is discharged, when the work is finished, namely the power supply of the impeller s7 is manually turned off by the outside, because the two ends of the capacitor s3 still have larger potential difference, the capacitor s3 discharges the impeller 7, and the current direction is opposite to the power supply direction of the impeller s7 by the alternating, the working direction of the impeller s7 is changed, positive pressure is output indoors, on one hand, under the action of introduced positive gas, the separation plate 11 and the filter screen 7 are backflushed, so that the part of oil mist on the lower end faces of the separation plate 11 and the filter screen 7 under the action of negative pressure is blown by backflushed airflow to reduce the adhesive force of the oil mist, and because the oil mist is just at the stage of exhausting oil fume, the adhesive force of the oil layer in the incompletely solidified state is weak, so that the oil layer is blown off and partially falls into the oil box 3, and simultaneously under the discharge action of the capacitor, the heating resistance wire is heated, so that preheated cleaning liquid is evaporated in a short time during heating, oil in the oil box 3 is remained in the oil box 3 due to high boiling point, and the cleaning liquid steam flows upwards and finally contacts with the lower end faces of the filter screen 7 and the separation plate 11 and is liquefied into cleaning liquid again, because the cleaning fluid is soluble in oil for at oil reservoir and cleaning fluid intermixture, and by being washed off oil box 3 under the gas common effect of recoil, thereby improved the clearance effect to filter screen 7 and separation plate 11, simultaneously, the cleaning fluid that gets into in the oil box can continue to heat after next use, and clears up once more, makes it have the effect of recycling.

Although the terms of the housing 1, the air inlet 2, the oil box 3, the sealing plate 4, the slide rail 5, the electromagnet 6, the filter screen 7, the rotating shaft 8, the impeller 9, the fan box 10, the separating plate 11, the air outlet 12, the oil passage 13, etc. are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. A range hood capable of automatically cleaning a filter screen comprises a cooking bench and a shell (1), and is characterized in that the shell (1) is provided with a plurality of air inlets (2), a sealing plate (4) is arranged at a position, close to the air inlets (2), of the shell (1), the sealing plate (4) is connected with a sliding rail (5) fixed on the inner wall of the shell (1), the top of the sliding rail (5) is provided with an electromagnet (6), the inner wall of the shell (1) is fixedly connected with a filter screen (7), the bottom of the shell (1) is provided with an oil box (3), the filter screen (7) is communicated with the oil box (3) and is provided with an oil duct (13), and cleaning liquid is arranged in the oil box (3);

the sealing plate is characterized in that one end, close to the electromagnet (6), of the sealing plate (4) is provided with a permanent magnet layer which is opposite to the electromagnet (6) in the same pole, the electromagnet (6) is attached to the filter screen (7) mutually, the top of the inner wall of the shell (1) is provided with a fan box (10), the fan box (10) is rotatably connected with an impeller (9) through a rotating shaft (8), one side, close to the impeller (9), of the fan box (10) is provided with a separating plate (11), and the oil box (3) is fixedly connected with the shell (1) through a buckle.

2. The range hood capable of automatically cleaning the filter screen according to claim 1, wherein the rotating shaft (8) is fixedly connected with an external motor, an air outlet (12) is formed in the part, located in the fan box (10), of the shell (1), and a heating resistance wire is embedded in the inner wall of the oil box (3).

3. The range hood capable of automatically cleaning the filter screen according to claim 1, wherein the cleaning liquid is alcohol with a boiling point of 78 ℃ and dissolved in food oil, the impeller (9) is electrically connected with a capacitor, a rectifier and a current commutator, and the heating resistance wire is connected with the capacitor in series.