KR100905229B1 - Gas burner system for painting chamber - Google Patents

Abstract

A gas burner system for a painting booth is provided to make flame of mixed gas even in the entire panel because a spatial distribution unit, a plane distribution unit and a metal fiber sintering mat are installed in the burner part. A gas burner system for a painting booth comprises a gas supply amount detection sensor(GS) which senses the supply quantity of gas and outputs the sensed value; a burner unit(100) which generates the red flame when the gas and the air supplied from the gas supply part are mixed and the corresponding mixed gas is burnt; a spectrum analyzing unit(300) which outputs data concerning the flame distribution of the burner unit; and a controller(200) which controls the supply quantity of the gas supplied to the burner unit, the rate of the mixed gas and supply direction of the mixed gas based on the sensing value of the gas supply amount detection sensor and output data of the spectrum analysis unit. The burner of the burner unit comprises a multi-layered spatial distribution unit which distributes the mixed gas flowed in evenly in relation to the whole space; a mesh structured plane distribution unit which distributes the distributed mixed gas in relation to the entire panel; and a metal fiber sintering mat which completely combusts the distributed mixed gas.

Description

Gas burner system for painting booth {GAS burner system for painting chamber}

The present invention relates to a burner system for a paint booth, in particular, to minimize the generation of volatile organic compounds (Volatile Organic Compounds) for a paint booth generated by a burner used to quickly dry a paint used for painting or painting work. To suppress the gas burner, replace the existing burner that uses diesel fuel as a fuel, but improve the problem of the gas burner which is less efficient for the coating booth, provide multiple cover type screen for the complete combustion and optimize the heat distribution. It relates to a gas burner system for the coating booth through the improvement of the structure to achieve.

In general, volatile organic compounds (VOCs) for coating booths are benzene, toluene, which cause hematopoietic dysfunction, carcinogenicity, consciousness disorder, headache, general spasms, kidney disorders, cardiac abnormalities, As a general term for organic hydrocarbon compounds such as xylene, Korea newly established the regulation on 'Volatile Organic Compounds' in Article 28, Paragraph 2 of the Amendment Act of the Air Environment Conservation Act on December 29, 1995. VOCs emission facility management has been in operation since January 1996. For the management of VOCs emission facilities in the air-environmental regulatory area, on March 31, 1999, 'Regulations on VOCs Emission Facility Types, Sizes and Suppression Prevention Facilities,' etc. In the automobile manufacturing, maintenance and painting booths, VOCs emission control and prevention facilities are completed by the end of 2000. In 2000, toluene, xylene, etc. Has been added and expanded to VOCs.

Accordingly, in order to remove such contaminants, a technique for removing VOCs using a nonwoven fabric impregnated with activated carbon powder in a polyester material has been widely proposed as a device for adsorbing and desorbing VOCs for a coating booth.

However, the device is contaminated with scattered dust as the impregnated fabric impregnated with activated carbon powder, and due to the hardening of the nonwoven fabric, the adsorption efficiency of VOCs is drastically lowered. Not only increased maintenance costs due to replacement but also significant problems such as fire of the coating booth due to non-woven fabric burnout when overheating occurred.

In this regard, research on VOCs adsorption and desorption devices for coating booths, which are cheaper, does not increase maintenance costs, and has high adsorption efficiency and high safety, is currently underway. VOCs adsorption and desorption device is not present situation.

The most fundamental cause of this problem is that the paint booth uses a burner that usually uses light oil as a fuel for heat generation, and therefore, heaters that use gas as a raw material to solve or reduce the above problems are largely used. It is being developed.

Conventionally, gas heaters developed to date are used for heating by using heat generated by burning gas and air as fuel, or for drying the product after painting the product. The structure is a gas for fuel to burn fuel. It is composed of a fuel supply unit for supplying and a burner unit for burning it.

In the case of a conventional gas heater, a ceramic board made of ceramic material is used to burn fuel gas, and a ceramic board made of ceramic material as described above is used in the burner part of the gas heater. In this case, an additional problem arises that the ceramic board is easily broken when the gas heater is handled and must be replaced every time.

In the case of burning a gas as a fuel using a ceramic board, the amount of heat generated per unit area was relatively small.

Therefore, when the gas heater is configured to be used in a large capacity, it is difficult to configure the gas heater in a large capacity because the size of the burner is relatively large.

In the case of a conventional gas heater, it is difficult to achieve an air-fuel ratio that is optimal for combustion because it is simply a method of supplying a gas that is a fuel and burning it using oxygen in the atmosphere.

That is, since the combustion in the burner part is likely to be incomplete combustion rather than complete combustion, there is a problem that harmful substances are generated due to incomplete combustion with relatively low combustion efficiency.

In addition, the conventional gas heater has a problem that the effective heat transfer area is relatively small because heat transfer to the surroundings is performed by convection.

An object of the present invention for solving the above problems relates to a burner system for the coating booth, in particular, a volatile organic compound for the coating booth generated by the burner used to quickly dry the paint used for the painting or painting work In order to minimize the occurrence of (Volatile Organic Compounds), replace the existing burner which uses light oil as fuel with gas burner, but improve the problem of gas burner which is less efficient for painting booth and multiple cover for complete combustion The present invention provides a gas burner system for a coating booth by providing a screen and improving the structure to optimize heat distribution.

Gas burner system for the coating booth according to the present invention for achieving the above object, the gas supply unit for supplying the gas fuel for combustion; A gas supply amount sensor for detecting a supply amount of the gas supplied from the gas supply part and outputting a detected value; A burner unit connected in communication with the gas supply unit to mix the gas and air supplied from the gas supply unit by a control signal to combust the mixed gas but generate a red flame which surface burns; A spectrum analyzer for acquiring and outputting data on the distribution of flames generated by the burner; And a control unit controlling a supply amount of gas supplied to the burner unit, a ratio of the mixed gas, and a supply direction of the mixed gas for combustion in the burner based on the detected value of the gas supply sensor and the output data of the spectrum analyzer. The burner unit includes: a solenoid valve configured to adjust a supply amount of gas supplied from a gas supply unit according to a control signal of the controller; A blowing motor for forcibly supplying the gas supplied via the solenoid valve with the outside air by a control signal; And a burner for burning the mixed gas supplied from the blower motor to generate a red flame which burns the surface. The burner in the burner has an inlet through which the mixed gas can be introduced from the blower motor. A body having a specific shape accommodating space, the bottom surface of which having a predetermined inclination angle at the inlet side; A space distribution means having a planar area corresponding to a plane area in the accommodation space of the body, for multiply distributing the mixed gas introduced from the blower motor with respect to the entire space; A plane distribution means having a mesh structure for uniformly distributing the mixed gas distributed on the upper surface of the space distribution means by the space distribution means with respect to the entire plane; And a sintered metal fiber sintered mat made of metal fibers disposed on the upper end of the plane distribution means for complete combustion of the mixed gas distributed through the plane distribution means.

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Here, the burner unit may further include cooling means located close to the burner to promote combustion of the burner and to prevent heat generated in the burner from being transferred to other parts of the system.

Here, the burner unit may be located at the top of the burner and prevent a fire due to a user's mistake or malfunction or forced foreign material injection, and may further include a dome cover.

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Here, the space distribution means has a structure in which a plurality of partition walls are stacked at predetermined equal intervals along the inclination angle of the bottom surface of the body, the partition wall for gradually separating between the partition wall is gradually present in the receiving space of the body Characterized in that the free space does not exist.

Here, when the planar distribution means are stacked at the end of the partition wall forming the space distribution means, it has a bent portion for supporting it, and the bent portion is characterized in that a plurality of protrusions are formed as an integral extension.

Here, the metal fiber sintered mat is made of a porous metal fiber media, the media is that the convex portion of the continuous uniform shape on the mat upper surface of the metal fiber non-woven fabric occupies 95 ~ 99% of the mat area of the metal fiber nonwoven fabric. It features.

Here, the inside of the inlet further includes a supply direction adjusting means for adjusting the direction of the flow path for the mixed gas flowing in force from the blower motor up, down, left and right, the supply direction adjusting means, the control of the controller A plate-shaped up and down supply direction adjusting unit rotating up and down based on a central hinge for determining whether to send a large amount of mixed gas forcibly introduced from the blower motor by a signal to a front end of the space distribution means or to a rear end thereof; And a plate-shaped left and right feeding direction that rotates from side to side based on a central hinge that determines whether to send a mixed gas forcibly introduced from the blower motor to the left or right side of the space distribution means by the control signal of the controller. It may include an adjustment unit.

As expected effects due to the above-described features of the present invention, in order to suppress as much as possible the generation of volatile organic compounds for the coating booth caused by the burner used to quickly dry the paint used for painting or painting. It replaces the existing burner which uses diesel fuel as a gas burner, but improves the problem of the gas burner which is less efficient for the coating booth, provides multiple covered screens for complete combustion and optimizes heat distribution.

The above object and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention described below with reference to the accompanying drawings by those skilled in the art.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram illustrating a configuration of a gas burner system for a paint booth according to the present invention, FIG. 2 is a perspective view illustrating a configuration of a gas burner in FIG. 1 and FIG. It is an exploded perspective view of a principal part configuration, and FIG. 4 is an exemplary cross-sectional view of the principal part configuration in FIG. 3.

As shown in FIG. 1, the gas burner system for a paint booth according to the present invention includes a gas supply part G for supplying gas fuel necessary for combustion, and a supply amount of a gas supplied from the gas supply part G. Gas supply amount sensor (GS) for detecting and outputting the detection value and the gas supply unit (G) is connected in communication with the gas supplied from the gas supply unit (G) and the outside air by mixing the control signal A burner unit 100 which burns the mixed gas but generates a red flame which burns the surface, and a spectrum analyzer 300 which acquires and outputs data on the distribution of the flame generated by the burner unit 100; And a ratio of the amount of gas supplied to the burner unit 100 and the ratio of the mixed gas based on the detected value of the gas supply sensor GS and the output data of the spectrum analyzer 300, and in the burner 140. Largely it consists of a controller 200 to control the feed direction of the gas mixture for combustion in.

At this time, referring to Figure 2 attached to the configuration of the burner unit 100, the solenoid valve 120 for adjusting the supply amount of the gas supplied from the gas supply unit G in accordance with the control signal of the control unit 200 And a blowing motor 130 for forcibly supplying the gas supplied via the solenoid valve 120 to the burner side referred to by reference numeral 140 by mixing with outside air and a control signal, and from the blowing motor 130. A burner 140 which burns the supplied mixed gas but generates a red flame which burns the surface and promotes combustion of the burner 140 and prevents heat generated from the burner 140 from being transferred to other parts of the system. Cooling means 150 is located close to 140, and the burner 140 is located on the top of the dome-shaped cover (1) to prevent a fire due to the user's mistake or malfunction or forced foreign matters 10).

The domed cover 110 is composed of two covers, which are referred to by reference numerals 111 and 112, which is intended to increase safety, and the domed cover 110 is statically perforated.

In addition, referring to Figure 3 attached to the configuration of the burner 140, inlet (not given reference number) to the mixed gas flows from the blower motor 130 has a specific shape It has an accommodating space (not given a reference number), the bottom surface of the body having a predetermined inclination angle of the inlet side has a low inclined angle, and has a planar area corresponding to the planar area in the receiving space of the body 141 is accommodated in the blowing motor The space distribution means 142 having a multi-layered structure for uniformly distributing the mixed gas introduced from the 130 to the entire space, and obtained by the upper end of the space distribution means 142 by the space distribution means 142 The flat distribution means 143 of the network structure for distributing the mixed gas distributed evenly with respect to the whole plane, and the upper end of the flat distribution means 143 is distributed through the plane distribution means 143 It consists of a sintered metal fiber sintered mat 144 made of metal fibers for complete combustion of the mixed gas.

At this time, the space distribution means 142 is shown in the accompanying Figure 4, when viewed from the side of the center has a structure that is stacked along the inclination angle of the bottom surface of the body 141, but the length of the interlayer partition wall As it gradually decreases, the other side has an inclination angle symmetric to an inclination angle of the bottom surface of the body 141.

Therefore, in the vicinity of the inlet through which the mixed gas can be introduced from the blower motor 130, a space where the mixed gas is freely formed is evenly formed, and then the partition wall is moved to the space distribution means 142 by the additionally introduced mixed gas. The amount of gas distributed into the spaces between the multiple layers divided by is equalized.

In addition, the space distribution means 142 includes a bent portion (not given a reference number) for supporting the plane distribution means 143 when it is obtained, the bent portion is shown in the enlarged view of FIG. As shown, the projections referred to by reference numeral 142a are formed.

The projection 142a is the space distribution means with respect to the entire plane by the bent portion for supporting the plane distribution means 143 when the plane distribution means 143 is obtained at the upper end of the space distribution means 142. This is to allow the mixed gas which has been separated through 142 to be free.

In addition, the bent portion is rounded in its entirety.

In addition, the sintered mat 144 is made of a porous metal fiber media, as shown in the enlarged view, the media is a 95% of the metal fiber nonwoven mat area of the convex portion of the continuous uniform shape on one side of the mat of the metal fiber nonwoven fabric It is formed to occupy ~ 99%.

Metal fiber media having convex portions exhibit high surface combustion strength and combustion efficiency when used as surface combustion media due to reinforcement interference by overlapping infrared rays generated in embossed convex portions and infrared rays generated in neighboring convex portions.

In addition, the metal fiber media has a high porosity, and thermal expansion stress is relaxed by the pores during the high temperature combustion of the fuel gas, so that cracking does not occur, and cooling fuel is supplied while low temperature fuel gas is supplied along the porous structure. The burned fuel gas is burned at the upper end of the combustion film, so that backfire is prevented.

Therefore, the porous metal fiber media is a convex portion of a continuous diamond pattern formed on one surface, that is, the upper surface of the mat made of a metal fiber nonwoven fabric, 95-99% of the area of the metal fiber nonwoven mat mat is formed as a convex portion, Between the convex parts is a crimp sintered part, and the boundary of the convex part is defined by this crimp sintered part.

In this case, when the convex portion occupies less than 95% of the total area, the mutual reinforcing action of infrared rays generated on the surface of the media is not sufficient. On the contrary, when the convex portion occupies an area of 99% or more with respect to the total area, the embossed shape Since the convex portion disappears and becomes a flat form, the combustion intensity due to the constructive interference of infrared rays emitted from the embossed form is rather reduced.

Therefore, the convex portion is preferably formed to be 95-99% of the area of the nonwoven mat made of metal fibers.

Furthermore, the elbow-shaped curved surface (convex) in the metal fiber media has a 1% -5% curvature. As used herein, the term 'bend' refers to the length ratio of the length of the bottom surface of the surface of the embossed portion (convex portion) is not formed in the side cross-section of the metal fiber media: the upper embossed portion.

If the curvature is less than 1%, the effect of increasing surface combustion efficiency by the convexity is insignificant in a nearly flat state where almost no bend such as embossing is formed. It is not preferable at the point of weakening strength. As the fuel gas flows into the back surface of the media having the sintered and convex portions (metal fiber nonwoven mat surface having no convex portion) as described above, the fuel gas is freely ejected from the convex portion and the surface of the combustion media (metal fiber media) It is combusted and the surface combustion intensity is increased due to mutual reinforcement interference of infrared rays generated in the bending of the convex portion.

In the metal fiber media having the continuous convex portions, each convex portion is bounded by the sintered portions, and the sintered portions are formed at intervals of 5-l5mm. When the spacing of the sintered part is less than 5mm, there are many porous convex parts between the rigid sintered parts and there is no big difference from the mat sintered on the outside of the sintered part, and thus it does not exhibit sufficient surface combustion efficiency and strength as the combustion media. If the spacing of the compression sintering portion exceeds 15mm, the sintering force between the fibers is low, and the fiber itself is burned, thereby shortening the life as a combustion media.

The convex portion continuously formed on one surface of the metal fiber nonwoven mat may be formed in any shape in which the surface combustion strength can be increased due to the reinforcement interference of infrared rays generated in the convex portion, but is not particularly limited, for example. It may be formed in the form of diamond or fish scales, more preferably in the form of diamond.

The method of pressing and sintering is not particularly limited, and the pressing and sintering of one surface of the metal fiber nonwoven mat may be performed by a method generally known in the art. Although not limited thereto, in a general method, by pressing and pressing a web of a convex-shaped pattern to be formed on a metal fiber nonwoven fabric mat, the sintered portion forming the boundary of the convex portion is formed by sintering the convex portion. do.

Compression sintering can be carried out under general conditions known in the art, and is not intended to limit the present invention, for example, vacuum degree of 10 ⁻⁵ to 10 ⁻⁶ torr, sintering temperature of 1,200 to 1,400 ° C., and sintering time. It can be sintered in 1 to 4 hours.

In addition, the inside of the inlet as shown in the enlarged partial cutaway view of Figure 3, the supply direction for adjusting the direction of the flow path for the mixed gas flowing in force from the blowing motor 130 flows up and down, left and right Adjusting means (141a, 141b), the upper and lower supply direction adjustment unit referred to by reference numeral 141a is a space distribution means for forcing the mixed gas flowing from the blowing motor 130 by the control signal of the control unit 200 It is decided whether to send a lot to the front end of the (142) or a lot to the rear end.

On the other hand, the left and right supply direction adjusting unit, which is referred to as 141b, moves the mixed gas forcibly introduced from the blower motor 130 by the control signal of the controller 200 to either the left or the right side of the space distribution means 142. You will decide if you want to send it.

The upper and lower supply direction adjusting unit 141a and the left and right supply direction adjusting unit 141b have a plate shape, and the upper and lower supply direction adjusting unit 141a rotates vertically or horizontally based on the hinge of the center. In the illustrated example, the driving unit for rotating is described above. Note that it is not shown.

In addition, unlike the illustrated example, the positions of the reference numerals 141b and 141a may be changed.

Operation control of the supply direction adjusting means (141a, 141b) is performed in the control unit 200, the control unit 200 obtains the data on the distribution of the flame generated by the burner unit 100 and outputs the spectrum It is for forcibly adjusting the flame of the mixed gas combusted by the sintered mat 144 to be equalized in the entire plane based on the data of the analysis unit 300.

While the invention has been shown and described in connection with specific embodiments thereof, it is well known in the art that various modifications and changes can be made without departing from the spirit and scope of the invention as indicated by the claims. Anyone who owns it can easily find out.

1 is a diagram illustrating a block configuration of a gas burner system for a coating booth according to an embodiment of the present invention.

FIG. 2 is a perspective view showing the configuration of the gas burner in FIG. 1. FIG.

FIG. 3 is an exploded perspective view of the main component of FIG. 2. FIG.

4 is an exemplary cross-sectional view of the main parts of FIG. 3.

Claims (9)

A gas supply unit supplying gas fuel necessary for combustion; A gas supply amount sensor for detecting a supply amount of the gas supplied from the gas supply part and outputting a detected value; A burner unit connected in communication with the gas supply unit to mix the gas and air supplied from the gas supply unit by a control signal to combust the mixed gas but generate a red flame which surface burns; A spectrum analyzer for acquiring and outputting data on the distribution of flames generated by the burner; And Control unit for controlling the supply amount of the gas supplied to the burner and the ratio of the mixed gas and the supply direction of the mixed gas for combustion in the burner based on the detection value of the gas supply sensor and the output data of the spectrum analyzer Including, but the burner unit, A solenoid valve adjusting a supply amount of gas supplied from a gas supply part according to a control signal of the controller; A blowing motor for forcibly supplying the gas supplied via the solenoid valve with the outside air by a control signal; And Burner to burn the mixed gas supplied from the blower motor to generate a red flame that burns the surface Includes, the burner in the burner unit, A body having an inlet through which a mixed gas can be introduced from the blower motor at one side, and having a receiving space having a specific shape, and having a lower inclined angle at a lower surface thereof; A space distribution means having a planar area corresponding to a plane area in the accommodation space of the body, for multiply distributing the mixed gas introduced from the blower motor with respect to the entire space; A plane distribution means having a mesh structure for uniformly distributing the mixed gas distributed on the upper surface of the space distribution means by the space distribution means with respect to the entire plane; And Sintered metal fiber sintered mat made of metal fibers disposed on the upper end of the plane distribution means for the complete combustion of the mixed gas distributed through the plane distribution means Gas burner system for the coating booth comprising a. delete The method of claim 1, The burner unit further comprises cooling means located close to the burner to promote combustion of the burner and to prevent heat generated in the burner from being transferred to other parts of the system. The method of claim 1, The burner unit, which is located on the top of the burner and prevents a fire due to the user's mistake or malfunction or forced injection of foreign matter and further comprises a dome-shaped cover for the gas burner system. delete The method of claim 1, The space distribution means has a structure in which a plurality of partition walls are stacked at predetermined equal intervals along the inclination angle of the bottom surface of the body, and the partition walls for gradually separating the layers are gradually smaller so that the partition walls do not exist in the accommodation space of the body. Gas burner system for the coating booth, characterized in that the free space is configured to exist. The method according to claim 1 or 6, At the end of the partition wall constituting the space distribution means, when the plane distribution means are stacked, it has a bent portion for supporting it, wherein the bent portion is a paint booth gas, characterized in that a plurality of protrusions are formed as an integral extension Burner system. The method of claim 1, The metal fiber sintered mat is made of a porous metal fiber media, the media is characterized in that the convex portion of the continuous uniform shape on the upper surface of the mat of the metal fiber nonwoven fabric occupies 95 ~ 99% of the mat area of the metal fiber nonwoven fabric. Gas burner system for paint booth. The method of claim 1, The inlet further includes a supply direction adjusting means for adjusting the direction of the flow path flows forcibly mixed gas flowing from the blower motor up, down, left and right, the supply direction adjusting means, The plate-shaped up and down pivoting up and down on the basis of the central hinge for determining whether to send a lot of mixed gas forcibly introduced from the blower motor by the control signal of the control unit to the front end or the rear end of the space distribution means Supply direction adjusting unit; And Plate-shaped left and right supply direction adjusting unit for rotating left and right on the basis of the central hinge for determining whether the mixed gas forcibly flowed from the blowing motor by the control signal of the control unit to the left or right of the space distribution means Gas burner system for the coating booth comprising a.

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