WO2022055175A1

WO2022055175A1 - Dust collector for roaster table

Info

Publication number: WO2022055175A1
Application number: PCT/KR2021/011831
Authority: WO
Inventors: 차동순
Original assignee: 이앤엠 주식회사
Priority date: 2020-09-08
Filing date: 2021-09-02
Publication date: 2022-03-17
Also published as: KR102265630B1

Abstract

Provided is a dust collector for a roaster table, which can effectively collect smoke or dust from a roaster table without using an additional exhaust apparatus. The dust collector comprises: a pipe-type dust collecting unit; a charging unit of a squirrel cage type arranged in the dust collecting unit; a power source unit which generates a corona discharge via a plurality of discharging members included in the charging unit; and a smoke exhaust guide unit installed under the dust collecting unit.

Description

Dust collector for roasting table

The present invention relates to a dust collector for collecting dust particles, and more particularly, to a dust collector for a roasting table capable of collecting dust particles, oil smoke, etc. emitted from a roasting table used in restaurants, etc.

In general, a restaurant specializing in grilling is equipped with a grilling table installed in the center of the table or a grilling table in which meat is grilled using charcoal or gas as fuel in a roaster. Smoke is generated in the process of grilling meat, and especially when meat oil falls on fuel, a large amount of smoke and dust particles are generated and pollute the indoor air.

In order to maintain a comfortable indoor environment while eating, an exhaust duct or an exhaust device for discharging smoke is provided at the top of the roasting table. That is, smoke or dust from the roasting table is discharged to the outside through the exhaust duct, and in the process, the smoke or dust is removed through the dust collector. However, if the exhaust duct is used for a long period of time, thick and thick oil stains accumulate inside the exhaust duct.

An object of the present invention is to provide a dust collector for a roasting table that can effectively collect smoke or dust emitted from the roasting table even without a separate exhaust device.

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

A dust collector according to an embodiment of the present invention for achieving the above object is a dust collector for collecting and charging dust particles in polluted air, comprising: a tubular dust collector for moving air from one side to the other; a charging unit disposed inside the dust collecting unit to be spaced apart from the dust collecting unit at a predetermined interval and having a plurality of discharge members extending along a longitudinal axis of the dust collecting unit; a power supply unit for generating a corona discharge through the discharge member by forming a potential difference between the dust collecting unit and the charging unit; and a flue gas guide part coupled to one side of the dust collecting part and having a structure in which an inner diameter increases as the distance from the dust collecting part increases. Here, the dust particles included in the air flowing along the air passage formed along the longitudinal axis of the dust collecting unit may be charged by the corona discharge and move toward the dust collecting unit.

The charging unit may have a squirrel cage structure, and the charging unit may include a pair of fixing rings disposed on one side and the other side of the dust collecting unit, and a plurality of discharge members connecting the pair of fixing rings. there is.

An electromagnetic field may be formed around the plurality of discharging members, and an electric wind may be generated by canceling the electromagnetic field between the discharging members adjacent to each other. can be accelerated toward the collection unit.

The dust collecting unit may further include a contaminant collecting unit formed between the dust collecting unit and the smoke inducing unit to collect dust and contaminants collected on an inner wall of the dust collecting unit. Here, the contaminant collecting part may include a collecting container surrounding one side of the dust collecting part, and a spacer formed in the collecting container to space the collecting container and the dust collecting part apart to form a discharge path of the dust contaminants.

The dust collecting unit may further include an air flow path control unit formed of a helical blade formed on one side, the other side, or both sides. Here, the air flow control unit may form a vortex in the air flowing into or discharged from the dust collecting unit.

A plurality of air inlets formed along an outer circumferential surface of the dust collecting unit adjacent to the other side of the dust collecting unit may be further included.

A dust collector according to another embodiment of the present invention for achieving the above object is a dust collector for collecting and charging dust particles in polluted air, comprising: a tubular dust collector for moving air from one side to the other; a charging unit disposed inside the dust collecting unit to be spaced apart from the dust collecting unit at a predetermined interval and having a plurality of discharge members extending along a longitudinal axis of the dust collecting unit; a power supply unit for generating a corona discharge through the discharge member by forming a potential difference between the dust collecting unit and the charging unit; and a flue gas guide part coupled to one side of the dust collecting part and having a structure in which an inner diameter increases as the distance from the dust collecting part increases. Here, the charging unit disposed inside the dust collecting unit may have a squirrel cage structure in which a plurality of discharge members are arranged concentrically, and an annular discharge region may be formed in the dust collecting unit by the plurality of discharge members. there is. In addition, dust particles included in the air flowing along the air passage formed along the longitudinal axis of the dust collecting unit may be charged while passing through the annular discharge region due to the corona discharge, and may be collected on the inner wall of the dust collecting unit. In addition, an electric wind may be generated between the discharging members adjacent to each other due to electromagnetic field cancellation around the discharging members, and the charged dust particles may be accelerated toward the dust collecting unit by the electric wind.

Specific details of other embodiments are included in the detailed description and drawings.

As described above, the dust collector according to the present invention has the following excellent effects.

First, the tubular dust collecting unit and the charging unit having a squirrel-cage structure disposed therein form an annular discharge region and electric wind, thereby increasing dust collection efficiency. An <annular discharge region> is formed around a plurality of discharge members arranged on concentric circles at predetermined intervals inside the dust collecting unit, and an <electric wind> is formed between the adjacent discharge members toward the dust collecting unit. Accordingly, the polluted air continuously passes through the annular discharge region while moving from one side of the dust collecting unit to the other, and the charged dust particles can be collected by being accelerated to the dust collecting unit by the electric wind. In particular, since charging and dust collection occur continuously 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, dust contaminants composed of dust particles and oil grime accumulated on the inner wall of the dust collecting unit are collected in the contaminant collecting unit formed in the lower part of the dust collecting unit by gravity, and the dust contaminants can be conveniently removed through the discharge path formed in the contaminant collecting unit and the adsorbent cloth. there is.

Third, the air flow control unit composed of a helical blade installed between the dust collecting unit and the exhaust gas guide unit forms a vortex in the air flowing into the dust collecting unit, thereby increasing the residence time in the dust collecting unit and increasing the dust collecting efficiency. That is, the air flow control unit forms a vortex in the inflow air to ionize oil vapor and dust particles, and to lengthen the passage passage through the electric field to improve dust collection efficiency.

Fourth, the air flow control unit made of a helical blade installed on the upper part of the dust collecting unit increases the discharge distance of the clean air by forming a vortex in the purified air discharged from the dust collecting unit, so that it can be well dispersed around the dust collecting unit.

Fifth, external air flowing into the dust collecting unit through the air inlet rapidly accelerates the flow of air discharged to the upper end of the dust collecting unit, so that it not only spreads well to the surroundings, but also reduces the ozone density in the air due to corona discharge. The outside air introduced through the air inlet forms a vortex flow, which dilutes the concentration of the generated ozone and quickly diffuses and reduces the generated ozone so that there is no ozone effect on the indoor air.

Sixth, in general, in the case of a dust collector using an electric dust collecting method, a linear flow that allows air to flow parallel to the dust collecting plate is used to increase the collecting efficiency. Although the dust collector of the present invention uses an electric dust collecting method, it can effectively collect vortex air due to the structural specificity of the squirrel cage charging unit and the tubular dust collecting unit. That is, it is possible to effectively collect dust particles by using the centrifugal force according to the vortex and the electric field between the charging unit and the dust collecting unit.

1 is a view showing an indoor space in which a dust collector according to an embodiment of the present invention is installed.

2 is an exploded perspective view illustrating a dust collector according to an embodiment of the present invention.

3 is a cross-sectional view of the dust collector of FIG. 2 .

4 is a longitudinal cross-sectional view of the dust collector of FIG. 2 .

5A is a partially cut-away perspective view of the dust collector of FIG. 2 .

5B is a cross-sectional view of the dust collector of FIG. 5A.

6 is a cross-sectional view of the dust collector of FIG. 2 .

FIG. 7 is an enlarged view of part A of FIG. 6 .

8 is a front view showing a dust collector according to another embodiment of the present invention.

Fig. 9a is a cross-sectional view of the air inlet of Fig. 8;

9B is a view conceptually explaining a tornado formed by the air inlet of FIG. 8 .

10 is an exploded perspective view illustrating a dust collector according to another embodiment of the present invention.

11 is a plan view of the air flow control unit of FIG. 10 .

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention belongs It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

The discharge member of the present invention is made of a conductive material that causes corona discharge to the surroundings due to a potential difference with the dust collecting unit, and may have a shape such as a wire, string, string, or strap, for example. In the following embodiments of the present invention, a wire-shaped discharge member, that is, a discharge wire, is described as an example for convenience of description, but the scope of the present invention is not limited thereto and the aforementioned various shapes of discharge member It can have substantially the same action and effect even if it is used.

The dust collector 100 of the present invention mainly serves to remove or collect smoke or dust from indoor air, such as a restaurant having a roasting table, and then purify it. The dust collector 100 may be disposed on the roaster table 210 . When the polluted air emitted from the roasting table 210 rises by the heat and flows into the lower part of the dust collector 100, the dust collector 100 charges and collects dust particles in the polluted air, and then collects the purified air. Discharge to the top of the device 100 .

An elongated fixed channel 220 is installed on an indoor ceiling such as a restaurant, and one or more dust collectors 100 may be caught in the fixed channel 220 through a power cable 230 or the like. The power supply unit provides power for corona discharge to the dust collector 100 through the power cable 230 .

In general, restaurants have an exhaust duct for discharging indoor air to the outside, but the dust collector 100 of the present invention may not be connected to such an exhaust duct. That is, this is because the dust collector 100 collects dust particles from the polluted air generated by the roasting table 210 , purifies the air completely, and then redisperses the dust particles into the room.

Hereinafter, a dust collector according to an embodiment of the present invention will be described in detail with reference to FIGS. 2 to 7 . 2 is an exploded perspective view illustrating a dust collector according to an embodiment of the present invention. 3 is a cross-sectional view of the dust collector of FIG. 2 . 4 is a longitudinal cross-sectional view of the dust collector of FIG. 2 . 5A is a partially cut-away perspective view of the dust collector of FIG. 2 . 5B is a cross-sectional view of the dust collector of FIG. 5A. 6 is a cross-sectional view of the dust collector of FIG. 2 . FIG. 7 is an enlarged view of part A of FIG. 6 .

First, referring to FIGS. 2 to 4 , the dust collecting device 100 of the present invention is a device for collecting and charging dust particles in the polluted air 50 , and includes a dust collecting unit 10 , a charging unit 20 , and a power supply unit (V). ), a smoke induction unit 30 and a contaminant collecting unit 40 .

The dust collecting unit 10 has a tubular shape in which the air 50 moves from one side to the other side. For example, the combustion air 50 emitted from the roasting table 210 may flow into the lower side of the dust collecting unit 10 , and may be discharged to the upper side of the dust collecting unit 10 through a dust particle collection process. The dust collecting unit 10 may be made of a conductive material to attract charged particles by electrostatic force. In the present embodiment, a tubular dust collector having a circular cross section has been described as an example, but the present invention is not limited thereto, and a tubular dust collector having various cross sections may be applied. For example, the cross section of the tubular dust collector may be polygonal, oval, or the like.

The dust collector 10 may electrically maintain a ground state. Optionally, the dust collecting unit 10 may be electrically maintained in a floating state. Furthermore, in order to prevent an electrical safety accident due to human contact, an insulating plate, an insulating film, etc. may be disposed on the outer surface of the dust collecting unit 10 .

The charging unit 20 is spaced apart from the dust collecting unit 10 at a predetermined interval inside the dust collecting unit 10 and has a squirrel cage structure as a whole. Specifically, the charging unit 20 includes a pair of fixing rings 24 and 25 disposed on one side and the other side of the dust collecting unit 10, and a plurality of discharge members connecting the pair of fixing rings 24 and 25 ( 22). Each of the discharge members 22 extends along a longitudinal axis or a central axis of the dust collecting unit 10, and the plurality of discharge members 22 are spaced apart from the dust collecting unit 10 by a predetermined distance and are disposed on a concentric circle with respect to the longitudinal axis. Each of the discharging members 22 is disposed to be spaced apart from each other at regular intervals. The discharge member 22 may be made of a thin metal material to cause corona discharge in the gas. The fixing rings 24 and 25 may be made of a conductive material to transmit power from the power supply unit V to the discharge member 22 . Since the charging unit 20 is disposed spaced apart from the dust collecting unit 10 by a predetermined interval, as the cross-sectional shape of the dust collecting unit 10 is changed in various ways, the charging unit 20 also corresponds to a cross-section of substantially the same shape (eg, for example, circular, polygonal, oval, etc.). For example, referring to FIG. 3 , as the dust collecting unit 10 has a circular cross-section, the charging unit 20 also has a circular cross-section.

One or more insulating supports (26) secure the retaining rings (24, 25) with respect to the dust collector (10). The insulating support part 26 serves to electrically insulate the dust collecting part 10 and the charging part 20 and space them apart at regular intervals. The insulating support 26 is fastened to the dust collecting unit 10 through fastening parts such as bolts and nuts, and a user can easily separate the dust collecting unit 10 and the charging unit 20 by releasing the fastening unit to clean each.

The power supply unit V forms a potential difference between the dust collecting unit 10 and the charging unit 20 to cause corona discharge through the discharge member 22 . In this embodiment, a case in which the dust collecting unit 10 is grounded and a voltage is applied to the charging unit 20 is described as an example, but the present invention is not limited thereto. Each electrode can have any polarity if held between (20). Furthermore, even when the dust collecting unit 10 is in an electrically floating state, the power supply unit V may apply a voltage to the charging unit 20 to form a potential difference between the dust collecting unit 10 and the charging unit 20 .

An annular discharge region and electric wind by the dust collector of the present invention will be described with reference to FIGS. 5A and 5B .

When the power supply unit V forms a potential difference between the dust collecting unit 10 and the charging unit 20 , a corona discharge region is formed around the thin discharge member 22 in the charging unit 20 . An air flow path is formed along the longitudinal axis of the dust collecting unit 10, and the dust particles 52 included in the air 50 flowing along the air flow path are charged while passing through the corona discharge region, and then toward the dust collecting unit 10 by electrostatic force. will move In addition, oil vapor in the polluted air 50 is adsorbed on the inner wall of the dust collecting unit 10 to form oil marks, and the dust contaminants 54 composed of collected dust particles, oil marks, etc. It moves and is collected in the contaminant collecting unit 40 .

On the other hand, since corona discharge is generated around the discharge member 22 and the discharge member 22 is arranged in a squirrel cage structure, that is, concentrically with respect to the longitudinal axis of the dust collecting unit 10 , the discharge member 22 is located in the dust collecting unit 10 . ) by which an annular discharge region is formed. Therefore, the air 50 introduced into the dust collector 100 continuously passes through the annular discharge region until it exits the dust collector 100 , so the charged dust particles 52 are neutralized in the process of moving to the dust collector 10 . Even if , it can be charged again by the annular discharge region, so that the dust collection efficiency can be increased.

In general, an electromagnetic field is formed around a conductor through which electricity flows. Similarly, an electromagnetic field 23 is formed in a predetermined direction along the circumference of the discharge member 22 . Since the discharge members 22 are disposed at regular intervals on concentric circles in the dust collecting unit 10 , the electromagnetic field 23 is canceled between the discharge members 22 adjacent to each other to generate an electric wind. Electric wind refers to a wind that occurs when the nearby air is repelled and other air is pushed in when corona discharge occurs, and it can be amplified by the interference of electromagnetic waves. The electric wind accelerates the charged dust particles 52 toward the dust collecting unit 10 in a direction perpendicular to the longitudinal axis of the dust collecting unit 10 to increase dust collection efficiency.

Referring to FIGS. 6 and 7 , the smoke induction unit 30 is coupled to one side or a lower portion of the dust collecting unit 10 and has a structure in which the inner diameter increases as the distance from the dust collecting unit 10 increases, for example, a cone structure. The smoke induction unit 30 collects the polluted air emitted from the roasting table 210 through a wide inlet and moves it to the dust collecting unit 10 by heat or natural convection.

The contaminant collecting unit 40 is formed between the dust collecting unit 10 and the smoke inducing unit 30 to collect the dust contaminants 54 collected on the inner wall of the dust collecting unit 10 . The contaminant collecting unit 40 is formed in a collecting container 42 that surrounds one side or a lower portion of the dust collecting unit 10 through the open upper part, and is formed in the collecting container 42 to separate the collecting container 42 and the dust collecting unit 10 from each other. It includes one or more spacers 44 defining an exhaust path for dust contaminants 54 .

Dust particles, oil scale, etc. are collected on the inner wall of the dust collecting unit 10 by the corona discharge and electric wind, and the dust contaminants 54 are adsorbed. The dust contaminants 54 move downward along the inner wall of the dust collecting unit 10 by gravity, are collected in the collecting container 42 , and are discharged to the outside of the dust collecting unit 10 through a discharge path formed by the spacer 44 . The user can conveniently remove the dust contaminants 54 contained in the collection container 42 from the outside of the dust collecting unit 10 by using the suction cloth 46 or the like.

Hereinafter, a dust collector according to another embodiment of the present invention will be described in detail with reference to FIGS. 8 to 9B . 8 is a front view showing a dust collector according to another embodiment of the present invention. Fig. 9a is a cross-sectional view of the air inlet of Fig. 8; 9B is a view conceptually explaining a tornado formed by the air inlet of FIG. 8 . For convenience of description, members having the same functions as those shown in the drawings ( FIGS. 1 to 7 ) of the previous embodiment are denoted by the same reference numerals, and descriptions thereof will be omitted. The differences will be mainly described below.

In the dust collector 102 of this embodiment, a plurality of air inlets 12 are formed along the outer circumferential surface of the dust collecting unit 10 adjacent to the other side or upper portion of the dust collecting unit 10 . The air inlet 12 is formed in an oblique direction with respect to the longitudinal axis of the dust collecting unit 10 , so that external air 56 is introduced into the dust collecting unit 10 in an oblique direction through the air inlet 12 . The introduced outside air 56 can rapidly accelerate the flow of the purified air 50 to not only spread it well into the surrounding room, but also reduce the ozone density in the air 50 due to corona discharge. The outside air 56 introduced through the air inlet 12 forms a vortex flow, which dilutes the concentration of the generated ozone and quickly diffuses and reduces the generated ozone so that there is no ozone effect on the indoor air. do.

Hereinafter, a dust collector according to another embodiment of the present invention will be described in detail with reference to FIGS. 10 and 11 . 10 is an exploded perspective view illustrating a dust collector according to another embodiment of the present invention. 11 is a plan view of the air flow control unit of FIG. 10 . For convenience of description, members having the same functions as those shown in the drawings ( FIGS. 1 to 7 ) of the previous embodiment are denoted by the same reference numerals, and descriptions thereof will be omitted. The differences will be mainly described below.

In the dust collecting device 104 of the present embodiment, air

flow control units

60 and 62 are formed on one side (or lower side), the other side (or upper side), or both sides of the dust collecting unit 10 . The air

flow control units

60 and 62 have a helical blade structure to form a vortex in the air 50 introduced into or discharged from the dust collecting unit 10 .

Specifically, the air flow control unit 60 installed between the dust collecting unit 10 and the exhaust gas inducing unit 30 forms a vortex in the air 50 flowing into the dust collecting unit 10 to increase the residence time in the dust collecting unit 10 and relatively It increases the dust collection efficiency by allowing it to pass through the corona discharge area for a long time. In other words, the air flow control unit 60 forms a vortex in the incoming air 50 to ionize the incoming dust (oil vapor and dust particles) and lengthen the passage through the electric field to improve dust collection efficiency.

The air flow control unit 62 installed at the upper part of the dust collecting unit 10 increases the discharge distance of the clean air by forming a vortex in the purified air 50 discharged from the dust collecting unit 10 to disperse it well around the dust collecting unit 10 .

Although not shown, in embodiments of the present invention, a fan may be added to the upper portion of the dust collecting unit 10 to enhance dispersion and diffusion of purified air after dust collection by corona discharge. In this case, the dust collector of the present invention may function as an air purifier.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those of ordinary skill in the art to which the present invention pertains can realize that the present invention can be embodied in other specific forms without changing its technical spirit or essential features. you will be able to understand Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

Claims

A dust collector that charges and collects dust particles in polluted air, comprising:

A tubular dust collecting unit in which air moves from one side to the other;

a charging unit disposed inside the dust collecting unit to be spaced apart from the dust collecting unit at a predetermined interval and having a plurality of discharge members extending along a longitudinal axis of the dust collecting unit;

a power supply unit for generating a corona discharge through the discharge member by forming a potential difference between the dust collecting unit and the charging unit; and

It is coupled to one side of the dust collecting unit and includes a smoke induction unit having a structure in which the inner diameter increases as the distance from the dust collecting unit increases,

Dust particles contained in the air flowing along the air passage formed along the longitudinal axis of the dust collecting unit are charged by the corona discharge and move toward the dust collecting unit.
According to claim 1,

The charging unit has a squirrel cage structure, and the charging unit includes a pair of fixing rings disposed on one side and the other side of the dust collection unit, and a plurality of discharge members connecting the pair of fixing rings. .
According to claim 1,

An electric wind is generated between the discharging members adjacent to each other, and the charged dust particles are accelerated toward the collecting unit in a direction perpendicular to the longitudinal axis by the electric wind.
According to claim 1,

Further comprising a contaminant collecting unit formed between the dust collecting unit and the smoke inducing unit to collect dust and contaminants collected on the inner wall of the dust collecting unit,

The contaminant collecting part includes a collecting container surrounding one side of the dust collecting part, and a spacer formed in the collecting container to separate the collecting container and the dust collecting part to form a discharge path of the dust and contaminants.
According to claim 1,

Further comprising an air flow control unit comprising a helical blade formed on one side, the other side or both sides of the dust collecting unit,

The air flow control unit is a dust collector, characterized in that to form a vortex in the air flowing into or discharged from the dust collecting unit.
According to claim 1,

The dust collecting device further comprising a plurality of air inlets formed along an outer circumferential surface of the dust collecting unit adjacent to the other side of the dust collecting unit.
A dust collector that charges and collects dust particles in polluted air, comprising:

A tubular dust collecting unit in which air moves from one side to the other;

a charging unit disposed inside the dust collecting unit to be spaced apart from the dust collecting unit at a predetermined interval and having a plurality of discharge members extending along a longitudinal axis of the dust collecting unit;

a power supply unit for generating a corona discharge through the discharge member by forming a potential difference between the dust collecting unit and the charging unit; and

It is coupled to one side of the dust collecting unit and includes a smoke induction unit having a structure in which the inner diameter increases as the distance from the dust collecting unit increases,

The charging unit disposed inside the dust collecting unit has a squirrel cage structure in which a plurality of discharge members are arranged concentrically, and an annular discharge region is formed by the plurality of discharge members in the dust collecting unit,

The dust particles contained in the air flowing along the air passage formed along the longitudinal axis of the dust collecting unit are charged while passing through the annular discharge region due to the corona discharge and are collected on the inner wall of the dust collecting unit,

An electric wind is generated between the discharging members adjacent to each other due to electromagnetic field cancellation around the discharging members, and the charged dust particles are accelerated toward the dust collecting unit by the electric wind.