KR102490235B1 - Dust collection system for restaurants - Google Patents

Abstract

Provided is a dust collection system for restaurants that has high dust collection efficiency and is easy to manage. The dust collecting system includes: an air flow deflector for inducing an air flow so that the contaminated air introduced into the flue pipe spirally moves along the inner wall of the flue pipe; and an electrostatic precipitator having a plurality of discharge lines spaced apart at predetermined intervals in the dust collection pipe and collecting dust particles by charging them in the polluted air introduced from the air flow deflector.

Description

Dust collection system for restaurants {Dust collection system for restaurants}

The present invention relates to a dust collection system for collecting dust particles, and more particularly, to a dust collection system for restaurants that can effectively collect dust particles, oil, smoke, etc. emitted from a roaster table used in restaurants and treat pollutants. it's about

In general, restaurants specializing in grilling are provided with a grilling table for grilling meat or the like using charcoal or gas as fuel in a roaster or roaster installed at the center of the table. In the process of grilling and eating meat, smoke is generated, and in particular, when meat oil falls on fuel, a large amount of smoke, oil, and dust particles are generated, polluting indoor air. In this way, when the roaster is placed indoors, it pollutes the internal air, so it must be quickly discharged to the outside.

Conventionally, in order to discharge polluted air generated in the process of grilling meat or fish to the outside, a flue is placed on the upper part of the roasting machine, and the flue is connected to a duct provided on the ceiling, and then the smoke is drawn to the outside through a blower and the smoke is smoked through a smoke filter. A structure that collects dust is widely used. That is, the smoke generated in the roaster is collected through the duct, purified through the smoke filter, and discharged to the outside through the blower. In the case of such a dust collection system according to the prior art, there is a hassle of periodically cleaning the smoke filter or periodically replacing the filter entering the smoke filter.

The problem to be solved by the present invention is to provide a dust collection system for restaurants with high dust collection efficiency and easy management.

The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems not mentioned can be clearly understood by those skilled in the art from the description below. will be.

A dust collecting system for restaurants according to an embodiment of the present invention for achieving the above object includes an air flow deflector for inducing air flow so that the contaminated air introduced into the flue pipe spirally moves along the inner wall of the flue pipe; and an electric precipitator for collecting and charging dust particles in the polluted air introduced from the air flow deflector. Here, the electric dust collector includes a dust collection pipe through which contaminated air moves from one side to the other side; a charging unit having a plurality of discharge lines disposed inside the dust collection pipe at a predetermined interval and extending along a longitudinal axis of the dust collection pipe; a power supply unit generating a corona discharge in the discharge line by forming a potential difference between the dust collection tube and the charging unit; and a cleaning solution supply unit disposed above the dust collection pipe to form a cleaning solution film along an inner wall of the dust collection pipe. In addition, while the contaminated air moves along the longitudinal axis of the dust collection pipe, the dust particles are charged by the corona discharge and are collected by the cleaning liquid film while moving toward the dust collection pipe.

The plurality of discharge lines may be arranged at equal intervals on a concentric circle in the dust collection tube. The dust collection tube may have a corresponding through hole for each discharge line. Each of the discharge lines may be electrically connected to a power supply unit located outside the dust collection tube through an insulator installed in the through hole.

The air flow deflector includes a flue pipe through which contaminated air moves from one side to the other side; a first deflector having a plurality of air flow guide plates inclined at a predetermined angle with respect to the longitudinal axis of the flue pipe and installed in the flue pipe; and a cone-shaped second drift part installed below the first drift part in the flue pipe. The first drift unit may induce a spiral airflow of the polluted air. The second drift unit may induce an air current so that the spirally moving contaminated air flows along the inner wall of the flue pipe.

a blower for discharging air filtered through the electric precipitator to the outside; and an oil/water separator that is connected to the electric precipitator and collects washed contaminants and separates water and oil.

Details of other embodiments are included in the specification and drawings.

As described above, according to the dust collection system for restaurants according to the present invention, there are excellent effects as follows.

First, the dust collection efficiency can be increased by forming an annular discharge area and electric wind inside the dust collection pipe and the charging unit disposed therein. An <annular discharge region> is formed around a plurality of discharge lines arranged at equal intervals on a concentric circle inside the dust collector, and <electric wind> is formed between adjacent discharge lines toward the dust collector. Therefore, while the contaminated air moves from one side of the dust collector to the other, it continuously passes through the annular discharge area, and during this time, charged dust particles are accelerated into the dust collector by electric wind and collected. In particular, since charging and dust collection continuously occur throughout the entire period until the air introduced into the dust collector is discharged, it is possible to effectively suppress the re-dispersion of charged particles by being neutralized again.

Second, while the electric precipitator is operating (that is, a state in which a potential difference is formed between the dust collector and the charging unit), the cleaning liquid supply unit sprays the cleaning liquid to the inner wall of the dust collecting tube at high pressure through a spray nozzle to automatically clean the inner wall of the dust collecting tube. . That is, the cleaning solution supply unit forms a cleaning solution film along the inner wall of the dust collection pipe, and contaminants composed of dust particles and oil stains accumulated on the inner wall of the dust collection pipe are collected along with the cleaning solution by gravity in the sewage collector installed at the lower part of the dust collection pipe. Contaminants can be sent from the sewage collector to an oil-water separator where they are separated into water and oil for treatment.

Third, the air flow deflector installed on the upper part of the electric dust collector induces the air flow so that the contaminated air flowing into the dust collector spirally moves along the inner wall of the dust collector, thereby increasing the residence time in the dust collector and increasing the dust collection efficiency. That is, the air flow deflector forms a vortex or a spiral air flow for the polluted air flowing into the dust collection pipe to ionize oil vapor and dust particles and lengthen the passage through the electric field to improve the dust collection efficiency.

1 is a view showing a space in which a dust collection system according to an embodiment of the present invention is installed.
2 is a configuration diagram showing a dust collection system according to an embodiment of the present invention.
3 is a conceptual diagram showing the dust collection system of FIG. 2 .
4A is a perspective view showing an air flow deflector according to an embodiment of the present invention.
4b is a cross-sectional view of the airflow deflector of FIG. 4a.
5A is a perspective view showing an air flow deflector according to a modified example of the present invention.
5B is a cross-sectional view of the airflow deflector of FIG. 5A.
6A is a perspective view illustrating an electric precipitator according to an embodiment of the present invention.
6B is a cross-sectional view of the electric precipitator of FIG. 6A.
6C is a longitudinal cross-sectional view of the electric precipitator of FIG. 6A.
FIG. 6d is an enlarged view of part A of the electric precipitator of FIG. 6c.
7A is a partially cut-away perspective view of the electric precipitator of FIG. 6A.
7b is a cross-sectional view of the electric precipitator of FIG. 7a.

Advantages and features of the present invention, and methods of achieving them, will become clear with reference to the detailed description of the following embodiments taken in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, only these embodiments make the disclosure of the present invention complete, and common knowledge in the art to which the present invention belongs. It is provided to fully inform the holder of the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numbers designate like elements throughout the specification.

1 is a view showing a space in which a dust collection system according to an embodiment of the present invention is installed. 2 is a configuration diagram showing a dust collection system according to an embodiment of the present invention. 3 is a conceptual diagram showing the dust collection system of FIG. 2 .

1 to 3, the dust collecting system 100 for a restaurant of the present invention mainly discharges indoor polluted air 10 generated in a restaurant having a roaster table to the outside through a tuckt or the like, and then removes smoke or dust particles. It plays a role in purifying after removal or collection. The dust collection system 100 includes ducts 200 and 500, an air flow deflector 300, an electric precipitator 400, a blower 600, a sewage collector 700, and an oil water separator 800. Specifically, polluted air 10 composed of indoor smoke, dust particles, etc. is collected through the first duct 200 . The air flow deflector 300 adjusts the air flow of the contaminated air 10 supplied from the first duct 200 . The electric precipitator 400 filters and collects smoke, dust particles, etc. from the contaminated air 10 supplied from the air flow deflector 300 . The filtered air 12 filtered through the electric precipitator 400 is discharged to the outside through the second duct 500 and the blower 600 . Here, even if a separate blower is not provided to discharge the filtered air 12 to the outside, a structure in which air is naturally discharged to the outside may be employed using a chimney effect caused by a difference between inside and outside temperature and atmospheric pressure. The electric precipitator 400 has a function of automatically cleaning the inner wall of the dust collector through a cleaning solution, and sewage or contaminants 14 made of the cleaning solution, smoke, dust particles, oil stains, etc. It is collected in the sewage collection unit 700 connected to. The collected contaminants 14 are sent to the oil-water separator 800, and the oil-water separator 800 separates them into water 16 and oil 15, and the oil 15 is stored in the oil collector 820 and water (16) is discharged through the domestic sewage (810).

Hereinafter, an airflow deflector according to an embodiment of the present invention will be described in detail with reference to FIGS. 4A and 4B. 4A is a perspective view showing an air flow deflector according to an embodiment of the present invention. 4b is a cross-sectional view of the airflow deflector of FIG. 4a.

Referring to FIGS. 4A and 4B , the air flow deflector 300 is supplied from the first duct 200 and introduced into the air flow deflector 300 or the flue pipe 310. ) induces the airflow to move in a spiral along the inner wall of the The air flow deflector 300 includes a flue pipe 310 , a first deflection part 320 and a second deflection part 330 .

The exhaust pipe 310 has a cylindrical shape as a whole and is connected to the first duct 200 while maintaining airtightness. The contaminated air 10 supplied from the first duct 200 moves from one side of the exhaust pipe 310 to the other side, preferably from the top to the bottom.

The first deflector 320 is disposed on one side or an upper side of the exhaust pipe 310 to induce a spiral air flow of the contaminated air 10 . The first deflector 320 includes a cylinder-shaped transfer pipe 322, an extension 324 connected to the lower end of the transfer pipe 322, and a plurality of air flow guide plates 326 formed on the inner wall of the transfer pipe 322. includes The expansion part 324 has a structure in which an inner diameter increases as the distance from the transfer pipe 322 increases, for example, a cone structure. The air flow guide plate 326 is inclined at a predetermined angle with respect to the longitudinal axis of the exhaust pipe 310 .

The second deflector 330 is disposed on the other side or the lower side of the exhaust pipe 310 to induce an air flow so that the spirally moving contaminated air 10 flows along the inner wall of the exhaust pipe 310 . The second deflection part 330 is installed below the first deflection part 320 in the exhaust pipe 310 . The second deflection part 330 has a structure in which an inner diameter increases as the distance from the first drift part 320 increases, for example, a cone structure.

The contaminated air 10 introduced into the transfer pipe 322 is moved spirally by the air flow guide plate 326 . The spirally moving polluted air 10 is guided to flow along the inner wall of the exhaust pipe 310 by the second deflector 330 . In this way, since the contaminated air flowing into the electric precipitator 400 through the air flow deflector 300 forms a spiral air current or a vortex, the flow path for ionization of oil vapor and dust particles and the passage of the electric field becomes longer, resulting in overall dust collection efficiency. can be improved

5A and 5B are modified examples of the air flow deflector of the present invention. 5A is a perspective view showing an air flow deflector according to a modified example of the present invention. 5B is a cross-sectional view of the airflow deflector of FIG. 5A. For convenience of explanation, members having the same functions as the respective members shown in the drawings ( FIGS. 4A and 4B ) of the previous embodiment are denoted by the same reference numerals and description thereof will be omitted, and the differences will be mainly described below.

The air flow deflector 301 according to this modified example includes a flue pipe 310 , a first deflection part 321 and a second deflection part 330 . In the case of the first deflection part 321, a plurality of air flow guide plates 326 are formed on the outer wall of the transfer pipe 322. Therefore, the contaminated air 10 introduced to the outside of the transfer pipe 322 is moved in a spiral shape by the air flow guide plate 326 . The spirally moving polluted air 10 is guided to flow along the inner wall of the exhaust pipe 310 by the second deflector 330 .

Hereinafter, an electric precipitator according to an embodiment of the present invention will be described in detail with reference to FIGS. 6A to 6D. 6A is a perspective view illustrating an electric precipitator according to an embodiment of the present invention. 6B is a cross-sectional view of the electric precipitator of FIG. 6A. 6C is a longitudinal cross-sectional view of the electric precipitator of FIG. 6A. FIG. 6d is an enlarged view of part A of the electric precipitator of FIG. 6c.

The electrostatic precipitator 400 is a device that charges and collects dust particles among the polluted air 10 introduced from the air flow deflector 300, and includes a dust collecting pipe 410, a charging unit, a power supply unit V, and a cleaning liquid supply unit 420. ).

The dust collection pipe 410 has a tubular shape through which the contaminated air 10 moves from one side to the other. For example, air introduced from the upper side of the dust collecting pipe 410 may be discharged to the lower side of the dust collecting pipe 410 through a process of collecting dust particles. The dust collector 410 may be made of a conductor so as to attract charged particles by electrostatic force. However, the present invention is not limited thereto, and even if the dust collecting pipe 410 is made of a non-conductor, the washing liquid film 424 formed on the inner wall of the dust collecting pipe 410 by the washing liquid supply unit 420 may serve as a dust collecting plate. In the present embodiment, a dust collection pipe having a circular cross section is described as an example, but the present invention is not limited thereto and dust collection pipes having various cross sections may be applied. For example, the cross section of the dust collector may be a polygonal shape or an elliptical shape. The dust collector 410 may electrically maintain a grounded state.

The charging unit includes a plurality of discharge lines 430 disposed inside the dust collecting pipe 410 and spaced apart from the dust collecting pipe 410 at a predetermined interval and extending along the longitudinal axis of the dust collecting pipe 410 . Specifically, each discharge line 430 extends along the longitudinal axis or central axis of the dust collector 410, and the plurality of discharge lines 430 are spaced apart from the dust collector 410 at a predetermined interval to form concentric circles based on the longitudinal axis. placed on top The plurality of discharge lines 430 are spaced apart from each other at equal intervals. The discharge line 430 may be made of a thin metal material to cause corona discharge in the gas. The charging unit or the discharge line 430 may be made of a non-corrosive conductive material, for example, stainless steel, tungsten, aluminum, or an alloy thereof.

The dust collection tube 410 has a corresponding through hole for each discharge line 430, and each discharge line 430 is a conductive power source located outside the dust collection tube 410 through an insulator 412 installed in the through hole. Connected to the application unit 432. Accordingly, the plurality of discharge lines 430 are electrically connected to one power supply unit 432 while maintaining a state in which the plurality of discharge lines 430 are electrically insulated from the dust collector 410 .

The power supply unit V forms a potential difference between the dust collector 410 and the charging unit, causing corona discharge through the discharge line 430. In this embodiment, a case in which the dust collector 410 is grounded and voltage is applied to the charging part is described as an example, but the present invention is not limited thereto, and a potential difference that can cause corona discharge is between the dust collector 410 and the charging part. Each electrode can have any polarity if it is maintained at . When the power supply unit V provides voltage to the power application unit 432, the same voltage is applied to the plurality of discharge lines 430.

The cleaning solution supply unit 420 is disposed above the dust collection pipe 410 and supplies the cleaning solution along the inner wall of the dust collection pipe 410 to form the cleaning solution film 424 . For example, the washing liquid supply unit 420 may be formed of an annular tube disposed along the inner periphery of the dust collecting pipe 410, and the washing liquid is supplied to the inner wall of the dust collecting pipe 410 through a spray nozzle formed on the lower surface of the annular tube. do. A pulse valve 422 is installed in the cleaning liquid supply unit 420 to adjust the amount of the cleaning liquid sprayed through the spray nozzle and the spray timing.

Referring to FIGS. 7A and 7B , an annular discharge area and electric wind by the electric precipitator of the present invention will be described. 7A is a partially cut-away perspective view of the electric precipitator of FIG. 6A. 7b is a cross-sectional view of the electric precipitator of FIG. 7a.

When the power supply unit V forms a potential difference between the dust collector 410 and the charging unit, a corona discharge region is formed around the discharge line 430 having a small thickness in the charging unit. An air passage is formed along the longitudinal axis of the dust collection pipe 410, and the dust particles 11 included in the contaminated air 10 flowing along the air passage are charged while passing through the corona discharge region, and then the dust collection pipe 410 is charged by electrostatic force. ) to move towards. At this time, the washing liquid film 424 is formed on the inner wall of the dust collecting pipe 410 by the washing liquid supply unit 420, and the washing liquid film 424 and the dust collecting pipe 410 act as the same electrode. Therefore, the charged dust particles 11 are collected in the cleaning liquid film 424 while moving toward the dust collection pipe 410, and the cleaning liquid film 424 moves from the top to the bottom of the dust collection pipe 410 by gravity, thereby cleaning the dirt. The material is collected in the sewage collector 700 .

On the other hand, since the plurality of discharge lines 430 causing corona discharge are concentrically arranged with respect to the longitudinal axis of the dust collector 410, the annular discharge area by the plurality of discharge lines 430 is within the dust collector 410. is formed Therefore, the contaminated air 10 continuously passes through the annular discharge area until it enters the inlet of the electric precipitator 400 and exits through the outlet, so that the charged dust particles 11 are neutralized in the process of moving through the dust collector 410. Even if it occurs, charging efficiency and dust collection efficiency can be maximized by being charged again by the annular discharge area.

In general, electromagnetic waves are formed around a conductor through which electricity flows. Similarly, electromagnetic waves 30 are formed in a certain direction along the circumference of the discharge line 430 . Since the plurality of discharge lines 430 are arranged at regular intervals on concentric circles in the dust collector 410, the electromagnetic waves 30 cancel or repel each other between the adjacent discharge lines 430. Airflow is generated through the airflow, and electric wind (or ionic wind) is generated. Electric wind refers to the wind generated by repeated phenomena in which nearby air is rejected and other air is pushed in when corona discharge occurs, and can be amplified by interference of electromagnetic waves. This electric wind accelerates the charged dust particles 11 toward the dust collector 410 in a direction perpendicular to the longitudinal axis of the dust collector 410, thereby increasing dust collection efficiency.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art can realize that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. you will be able to understand Therefore, the embodiments described above should be understood as illustrative in all respects and not limiting.

10: polluted air
11: dust particles
12: filtered air
14: contaminants
15: oil
16: water
30: electromagnetic waves
100: dust collection system
200: first duct
300, 301: air flow deflector
310: exhaust pipe
320, 321: first drift part
322: transfer pipe
324: extension
326: air flow guide plate
330: second drift part
400: electrostatic precipitator
410: dust collector
412: insulator
420: cleaning solution supply unit
422: pulse valve
424: washing liquid film
430: discharge line
432: power on
500: second duct
600: blower
700: sewage collector
800: oil water separator
810: domestic sewage
820: oil collector

Claims (4)

an air flow deflector for inducing an air flow so that the contaminated air introduced into the flue pipe spirally moves along the inner wall of the flue pipe; and
Including an electric dust collector for collecting and charging dust particles in the polluted air introduced from the air flow deflector,
The electric dust collector,
A dust collection pipe through which contaminated air moves from one side to the other side;
a charging unit having a plurality of discharge lines disposed inside the dust collection pipe at a predetermined interval and extending along a longitudinal axis of the dust collection pipe;
a power supply unit generating a corona discharge in the discharge line by forming a potential difference between the dust collection tube and the charging unit; and
A washing liquid supply unit disposed above the dust collection pipe to form a washing liquid film along an inner wall of the dust collection pipe;
The plurality of discharge lines are arranged at equal intervals on a concentric circle in the dust collection tube, and an annular discharge region is formed by the plurality of discharge lines in the dust collection tube,
While the polluted air moves along the longitudinal axis of the dust collection pipe, the dust particles are charged while passing through the annular discharge area caused by the corona discharge and are collected by the cleaning liquid film while moving toward the dust collection pipe,
Between the discharge lines adjacent to each other, electric wind due to electromagnetic wave cancellation around the discharge line is generated, and the charged dust particles are accelerated to travel through the dust collection pipe by the electric wind. According to claim 1,
The dust collection tube is provided with a corresponding through hole for each discharge line,
Each of the discharge lines is electrically connected to a power supply unit located outside the dust collection pipe through an insulator installed in the through hole. According to claim 1,
a blower for discharging air filtered through the electric precipitator to the outside; and
A dust collection system for restaurants further comprising an oil-water separator connected to the electric precipitator and collecting washed contaminants and separating water and oil. an air flow deflector for inducing an air flow so that the contaminated air introduced into the flue pipe spirally moves along the inner wall of the flue pipe; and
Including an electric dust collector for collecting and charging dust particles in the polluted air introduced from the air flow deflector,
The electric dust collector,
A dust collection pipe through which contaminated air moves from one side to the other side;
a charging unit having a plurality of discharge lines disposed inside the dust collection pipe at a predetermined interval and extending along a longitudinal axis of the dust collection pipe;
a power supply unit generating a corona discharge in the discharge line by forming a potential difference between the dust collection tube and the charging unit; and
A washing liquid supply unit disposed above the dust collection pipe to form a washing liquid film along an inner wall of the dust collection pipe;
While the contaminated air moves along the longitudinal axis of the dust collection pipe, the dust particles are charged by the corona discharge and are collected by the cleaning liquid film while moving toward the dust collection pipe,
The air flow deflector includes a flue pipe through which contaminated air moves from one side to the other side; a first deflector having a plurality of air flow guide plates inclined at a predetermined angle with respect to the longitudinal axis of the flue pipe and installed in the flue pipe; And a cone-shaped second drift portion installed below the first drift portion in the flue pipe,
The first drift unit induces a spiral airflow of the polluted air;
The second drift unit induces an air current so that the spirally moving contaminated air flows along the inner wall of the flue pipe.

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