KR20110027097A - The gas burner which has an auto adjustable apparatus for mixer - Google Patents

Abstract

PURPOSE: A gas burner having auto mixer-controlling device is provided to reduce weight and a unit cost and enable electrical control, since flame and mixture of gas and air are controlled by a lever in a gear manner. CONSTITUTION: A gas burner having auto mixer-controlling device comprises a manipulation unit(100), a driving unit(200), and a heating unit(300). The manipulation unit controls the opening/closing of a control valve(220) according to the range of the rotation of a rotating rod(151). The manipulation unit adjusts the amount of gas flowing in. The driving unit comprises a blower that supplies external air and forms pneumatic pressure. The driving unit controls the inflow amount of gas and pressure. The driving unit controls the supply of gas for ignition. The driving unit controls the gas supply to a control valve(220). The heating unit provides fire for cooking food. The heating unit supplies gas mixed with air.

Description

GAS BURNER WHICH HAS AN AUTO ADJUSTABLE APPARATUS FOR MIXER}

The present invention relates to a mixer of a gas burner having a high efficiency and high heating power, and more particularly, to a gas burner forcing the inlet air to increase the ignition temperature during the combustion of gas fuel, and to uniformly mix air and gas. The present invention relates to a mixer control device that is easily connected to a gas burner and used to maintain or guide the gas and air inlet and shut off with a single lever.

Conventionally, a device that enhances the thermal power of a gas burner by adding an air blower, a fan, or the like to mix external gas by introducing external air has been provided in various forms through continuous improvement.

Such a lever control device is a common way to operate by separately providing a gas control valve and an air control valve, but such a conventional mixer control device is introduced into the inside through the air supply pipe and fuel supply pipe respectively. The air and fuel are mixed to the burner through the mixer supply pipe.

However, since the conventional mixer regulator is independently provided with a valve for controlling the air inflow and a valve for controlling the fuel inflow, it is necessary to adjust both valves in order to adjust the mixer supply amount, and furthermore, the mixing ratio of fuel and air Since the opening and closing degree of the both sides of the valve must be adjusted so that it is properly maintained, its use is inconvenient. In addition, since the opening and closing degree of both valves is often not accurately adjusted, problems such as fuel waste and pollutants are generated due to incomplete combustion.

In order to solve the problems such as the background art, a recent mixer control device has been disclosed a structure that can adjust the mixing ratio and the inlet (injection) amount of air and gas at the same time through a single lever.

Korean Utility Model Registration No. 387916 "Designation name: Mixer control device for gas burners" is a mixing chamber formed so as to communicate with the outside through the outlet, the first coupling formed to communicate with the outside through the air inlet formed in the side wall portion A main body provided with a second coupler formed in communication with the outside through a fuel inlet formed in the sidewall and the sphere, and the outer peripheral surface of which is rotatably inserted into the first coupler so as to face the air inlet; And an air valve having an air hole for communicating or blocking the air inlet hole and the mixing chamber, and an outer circumferential surface thereof rotatably coupled to the second coupling port so as to face the fuel inlet hole. A fuel valve having a fuel passage for communicating or blocking a mixing chamber, and connected to any one of the air valve and the fuel valve Rotating means for rotating the bar, and one side is connected to the air valve and the other side is connected to the fuel valve includes a power transmission means for rotating the other side valve when the one side valve is rotated by the rotating means; A mixer control device for a gas burner is provided.

However, in recent years, the mixer control device is complicated in structure and has a problem in that it is inferior in mobility due to an increase in parts cost and weight and volume by providing gears to unnecessary parts.

In addition, in the mixing of gas and air, when mixing is provided by the pressure of each of the gas inlet pipe and the air inlet pipe, a backflow phenomenon may occur to the low pressure inlet pipe due to the pressure difference, and a resistance pressure is generated. Problems can arise where the mixing process of the quantities is difficult to maintain continuously.

The present invention has been made in order to solve the above problems, to match the flow direction of the gas generated and introduced through the gas inlet pipe and the air flowing from the gas inlet pipe, and the amount of injected gas and air lever according to the user's convenience By controlling electronically in accordance with the operation, the object is to provide reliability in quantitative mixing and convenience in use and maintenance.

In addition, the gear is formed to adjust the flow rate and mixing ratio of air and gas to reduce the unit cost, using a fan-shaped gear instead of a circular gear to form the gear only within the rotation radius range of the lever extended to one gear and exceeds the range By eliminating the gear part of the part, it is possible to reduce the loss of the gear part and change the control part for controlling the mixing ratio and the inflow (injection) amount to the method by the variable increase of the opening part instead of the uniform method by the through hole, so that the gas burner is more efficient. It is an object to provide a mixer control.

The present invention can be controlled electronically according to the lever operation by the gear method of the quantitative mixing of gas and air, and can reduce the weight and unit cost by reducing the unnecessary loss of convenient operation and parts, There is an effect that the reliability of the correct operation can be provided according to the intention.

In addition, it is easy to provide safety by the limit structure installed on the lever structure and the cooling structure by the external air for the stability of the electromagnetic components that can generate heat inside the device has an excellent industrial availability and usefulness.

In addition, the rotary switch manually selected by the user through the lever to change the rotational speed of the blower according to the position of the contact point, the small gear connected to the rotary switch and the large gear connected to the rotary rod of the lever is engaged with each other to operate the blower motor As the gas inflow and pressure are adjusted in proportion to the rotation speed of the gas, the mixture is formed, and it is possible to form and maintain a high fire power even at a pressure significantly lower than the high pressure gas pressure (1500 ~ 2500PSI / LPG standard) used in ordinary restaurants (280PSI). It uses gas (LNG 200PSI) and is very efficient.

In order to achieve the above object and effect, it will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing a structure of a conventional gas burner mixer control device, briefly explaining a conventional structure, and a mixing chamber 113 and a first coupler 111 communicating with the mixing chamber 113. And a body 110 having a second coupler 112 formed therein, and an air valve 120 and a fuel valve 130 rotatably inserted into the first coupler 111 and the second coupler 112, respectively. And, the cover 117 coupled to the main body 110 to surround the outer ends of the air valve 120 and the fuel valve 130, and the portion protruding out of the cover 117 of the fuel valve 130 The combined lever 140 has a main configuration.

The air inlet hole 116 and the fuel inlet hole 114 are formed in the side wall portions of the first coupler 111 and the second coupler 112 of the main body 110, respectively. ) And a mixer outlet 118 in communication with the second coupler 112 are formed in a direction opposite to the cover 117.

Although not shown, the air inlet hole 116 is connected to an air supply pipe connected to an air supply source such as an air pump, and the fuel inlet hole 114 is connected to a gas supply pipe connected to a fuel gas supply source, and the outlet 118 The mixer supply pipe connected to the burner is connected.

The air valve 120 is formed in a cylindrical shape, the inside of which is opened toward the outlet 118 side, and the air hole 121 which communicates with or is blocked by the air inlet hole 116 according to the rotation of the side wall portion Is formed. The fuel valve 130 also has a structure in which the inside thereof is opened toward the outlet 118 side, and the fuel through hole 131 which communicates with or blocks the fuel inlet hole 114 at its side wall portion, The fuel through hole 131 is provided with a plurality of small ones at predetermined intervals along the circumferential direction so that the gas amount can be adjusted stepwise.

In addition, an O-ring 137 is installed at both sides of the outer circumferential surface of the fuel valve 130 to prevent leakage of fuel gas.

Gears 125 and 135 engaged with each other are coupled to the air valve 120 and the fuel valve 130 as power transmission means for both of them to rotate in conjunction with each other.

Hereinafter, the configuration and operation of the gas burner provided with the automatic mixer control device according to the present invention will be described in detail.

2 is a perspective view showing the structure of the gas burner mixer control apparatus of the present invention, the present invention is largely composed of the operation unit 100, the drive unit 200 and the heating unit 300.

The operation unit 100 includes an operation panel 104 and a lever 150 provided outside the front surface of the gas burner main body.

The operation panel 104 is provided with a power switch 105 including an operation lamp, a re-ignition switch 106 and a re-ignition display lamp 101.

The lever 150 is rotated up and down by the user, the rotary rod 151 linked to the lever 150 is rotated in accordance with the rotation of the lever 150, the control valve at the end of the rotating rod 151 ( 220 is connected to the opening and closing of the control valve 220 is adjusted according to the range of the rotation of the rotating rod 151 is adjusted the amount of gas flowing in.

The driving unit 200 includes a blower 210 for providing external air and air pressure, a control valve 220 for controlling the amount of gas inflow and pressure, and a pilot valve 230 for controlling a gas supply for igniting and maintaining a preheat. , A main valve 250 for controlling a gas supply to the control valve 220, and an ignition device 270.

In addition, the blower 210 is connected to the blower pipe 213 in which external air is guided to the front surface, and the outer circumferential surface of the blower pipe 213 in order to prevent malfunction or fire hazard due to temperature rise that may occur in the driving unit 200. The air vent 211 is provided to spray external air, thereby preventing a temperature increase in the driving unit.

In addition, the gas supply pipe 241 passing through the control valve 220 passes through the end of the extended blower pipe 213 while maintaining airtightness by packing or sealing, and is connected to the mixing pipe 260 connected to the burner 310. do.

The tip of the blower pipe 213 is connected to the mixing pipe 260 while maintaining airtightness similarly to the gas supply pipe 241, and a plurality of air injection holes 212 are formed in the blower pipe 213 connected to the mixing pipe 260. , Blows external air generated through the blower 210 into the mixing pipe 260.

A predetermined position of the rotating rod 151 for adjusting the opening and closing range of the control valve 220 to adjust the amount of gas introduced therein is provided with a gear 102 that rotates like the rotating rod 151, and meshes with the gear 102 again. The other gear 103 which rotates is provided, and the other gear 103 interlocks with the rotary switch 107 which changes a contact according to rotation, and changes the contact of the rotary switch 107 according to rotation of the gear 103. , Generate different signals.

The rotary switch 107 is composed of 0 (standby) and the multi-stage (1 ~ 3 stage), as the lever 150 rotates in the standby state (0) 1 stage, 2 stage, 3 stage and the like can be made And the rotation speed of the blower is adjusted according to the contact position.

The heating unit 300 is provided with a burner 310 that provides thermal power to enable cooking such as food, and a mixing tube connected to the burner to supply gas mixed with air and gas.

In addition, an ignition rod 320 and a detection rod 330 for detecting whether ignition is generated by the power switch 105 or the re-ignition switch 106 are provided. Gas supply is controlled by the pilot valve 230 to form a prepaid by the ignition gas is provided with an ignition gas pipe 340 is provided with a coil 341 at the tip.

In addition, the predetermined position of the sensing rod 330 is provided with a thermal sensor 331 for detecting the presence or absence of prepaid.

Hereinafter, an exemplary embodiment of a gas burner provided with an automatic mixer control device according to the present invention will be described.

In one embodiment, when the on button of the power switch 105 is pressed, power is applied to the gas burner 10 to drive the blower 210, wherein the lever position is '0', and the driven blower is normally 774 rpm. It is preferable to set to rotate.

The applied power opens the pilot valve 230 configured as the solenoid valve with the driving of the blower 210 to move the external gas introduced from the gas supply unit 240 to the ignition gas pipe 340.

In addition, as the gas moves to the ignition gas pipe 340, an ignition transformer, which is an ignition device 270, is operated to generate sparks in the ignition rod 320 to the coil 341 provided at the tip of the ignition gas pipe 340. Generate a prepayment.

If the ignition is not performed due to a defect such as the ignition rod 320, the re-ignition display lamp 101 is turned on when the ignition is not performed by detecting the presence of an ignition state by the detection sensor 331 that detects the preheat temperature. The re-ignition switch 106 operates to generate sparks in the ignition rod 320 by the ignition transformer to generate prepaid in the coil 341 provided at the tip of the ignition gas pipe 340.

When the ignition is detected by detecting the presence or absence of the ignition state by the detection sensor 331, the main valve 250 for supplying gas to the burner 310 enters a standby state in which the opening may be performed, and the operation panel 104 is displayed. ), The operation lamp provided in the power switch 105 turns on.

The main valve 250 made of a solenoid valve enters a standby state in which the main valve 250 can be opened. The main valve 250 is to be opened, and means a state in which the main valve 250 is not opened. Since the operation of the lever 150 is not performed, the contact of the limit switch 152 connected to the gear rod 102 of the rotary rod 151 that interlocks with the lever 150 is not connected, and thus the main valve 250 is opened. Is being blocked.

The above steps describe an operation process that automatically reacts when the power switch 105 is turned on.

After that, the operation process according to the manual operation of the user will be described.

When the lever 150 is rotated and moved from the standby 0 to the first stage, the contact point of the limit switch 152 connected to the gear rod 102 of the rotary rod 151 interlocked with the lever 150 is connected to the main valve. 250 is opened.

The gas flowing through the opened main valve 250 reaches the inlet of the control valve 220 through the gas supply pipe 241, and the control valve 220 of the rotary rod 151 rotated by the lever 150. It is connected to the front end portion of the rotary rod 151 by the rotation range (1 stage) is partially opened to pass the introduced gas.

Since the power supply is common to each other in the state where the lever 150 is in the first stage and the lever position is '0', the rotational speed of the blower 210 is maintained before and after the state (774 rpm) when the power switch is applied.

Gas introduced through the control valve 220 is moved along the gas supply pipe 241 connected to the blower pipe 213 through which the external air generated from the blower 210 moves.

The gas supply pipe 241 is connected to the mixing tube 260 through the blower tube 213 while maintaining the airtightness, and the mixing pipe 260 is communicatively connected to the blower tube 213 while maintaining the airtightness. .

The picnic pipe 213 is provided with a plurality of air injection port 212 at the connection portion to communicate with the mixing pipe 260.

In order to maintain the airtightness of the conduit, the joint between the conduit and the conduit may include a packing or a seal treatment process.

As such, the mixing pipe 260 is introduced and mixed with gas and external air at the same time through the gas supply pipe 241 and the air injection port 212, and the mixed gas is burner at a predetermined pressure (inflow gas pressure and blowing pressure). It is injected through 310 and ignites on the burner by the prepayment of the ignition gas pipe 340 (pilot) adjacent to the burner 310.

When the lever 150 is rotated and moved from the first stage to the second stage, the control valve 220 becomes wider in an area that is relatively open as the rotation range of the rotating rod 151 increases, and a larger amount of gas is provided. Inflow.

In addition, the contact point of the rotary switch 107 which is different from the contact point in conjunction with the gear 103 is changed to the second stage, and the signal to increase the rotational speed of the blower 210 blower 210 controller (not shown-known Technology) to increase the rotational speed (about 1895rpm).

Thus, in the second stage, a larger amount of gas and external air are mixed than in the first stage, thereby increasing the thermal power of the burner 310.

When the lever 150 is rotated to move from two stages to three stages, the control valve 220 is fully opened as the rotation range of the rotary rod 151 further increases, and the most amount of gas is introduced.

In addition, the contact point of the rotary switch 107 that changes the contact point in conjunction with the gear 103 is changed to three stages, and the signal to increase the rotational speed of the blower 210 blower 210 controller (not shown-notice) Technology) to increase the rotational speed (about 2480rpm).

As a result, in the third stage, a larger amount of gas and external air are mixed than in the second stage, thereby further increasing the thermal power of the burner 310.

When the lever 150 is rotated again to move to the standby state 0, the main valve 250 is blocked by the limit switch 152, and the control valve 220 is closed so that the gas supply to the burner is blocked. The light will go out.

In addition, the rotational speed of the blower 210 is returned to the state (774 rpm) when the power switch is applied again, and only the prepaid of the ignition gas pipe 340 (pilot) is maintained.

In addition, when the power switch is turned on, even when the preheating of the ignition gas pipe 340 is turned off by the influence of ambient air or gas, the ignition detection sensor 331 detects this and operates the ignition transformer. The ignition rod 320 is re-ignited automatically.

When the power switch 105 is turned off (OFF), the pilot valve 230 is closed to block gas inflow into the ignition gas pipe 340, and the preheating is extinguished.

Figure 3 is a front view showing an embodiment of the gear structure of the adjuster lever of the present invention, the gear unit 102 is connected to the lever 150 in order to provide a satisfactory operating feeling while minimizing the force for the user to operate the lever 150 ) Includes a gear that is relatively larger than the other gear 103.

The gear units 102 and 103 are formed in the shape of a flat plate in order to reduce the unit cost of the parts and increase the space efficiency by reducing the volume and weight, and also the unit cost and space of the parts. There is no room for a variety of modifications and modifications within the tolerance of the fan form to increase efficiency.

That is, the shape of the gear parts 102 and 103 is not limited to the fundamental fan shape, as well as the free deformation and modification within the technical scope of the present invention.

Figure 4 is a reference perspective view showing a gas burner is provided with a control device according to the present invention, as shown in the drawing is the operation of the mixing ratio and opening and closing operation of the gas and air at the same time only by the operation of a single lever, electronically adjust the external air amount And the forced air type structure in which the external air inflow and pressure are mixed in a fixed amount by the rotary switch 107 according to the gas inflow and pressure, thereby opening or closing the valve to control gas or external air or to use a burner. It is possible to provide convenience that the operation of is implemented in one lever.

In addition, an internal identification window 108 is provided on one side of the operation panel 104 provided on the front of the gas burner 10 so as to check an internal device and identify an ignition state.

In addition, the rotary switch manually selected by the user through the lever to change the rotational speed of the blower according to the position of the contact point, the small gear connected to the rotary switch and the large gear connected to the rotary rod of the lever is engaged with each other to operate the blower motor As the gas inflow and pressure are adjusted in proportion to the rotation speed of the gas, the mixture is formed, and it is possible to form and maintain a high fire power even at a pressure significantly lower than the high pressure gas pressure (1500 ~ 2500PSI / LPG standard) used in ordinary restaurants (280PSI). It uses gas (LNG 200PSI) and is very efficient.

1 is a perspective view showing the structure of a conventional gas burner mixer control device.

Figure 2 is a perspective view showing the structure of the gas burner mixer adjustment apparatus of the present invention.

Figure 3 is a perspective view showing an embodiment of a gear structure of the adjuster lever of the present invention.

Figure 4 is a perspective view showing a gas burner provided with a control device according to the present invention.

[Description of Reference Numerals]

10. Gas burner 100. Control panel 101. Re-ignition display lamp

102, 103. Gear 104. Control panel 105. Power switch

106. Re-ignition switch 107. Rotary switch 108. Internal identification window

150.Lever 151.Rotary Bar 152.Limit Switch

200. Drive section 210. Blower 211. Blower

212.Air injection port 213.Blowing pipe 220.Control valve

230. Pilot valve 240. Gas supply part 241. Gas supply pipe

242. Fastener 250. Main valve 260. Mixing pipe

270. Ignition device (ignition transformer) 300. Heating part 310. Burner

320. Ignition rod 330. Detection rod 331. Detection sensor

340. Ignition gas pipes 341. Coils

Claims (6)

An operation panel 104 having a power switch 105, a re-ignition switch 106, and a re-ignition display lamp 101 on the outside of the front of the gas burner 10, and a front end of the gas burner 10 are connected to the control valve 220 to interlock. An operation unit 100 including a lever 150 connected to the rotating rod 151 so that the opening and closing of the control valve 220 is adjusted according to the range of the rotating rod 151 rotated; Blower 210 to provide external air generation and air pressure, a control valve 220 to control the gas flow rate and pressure, and a pilot valve 230 to control the gas supply to ignite and maintain the prepaid, and a control valve 220 A driving unit 200 including a main valve 250 and an ignition device 270 for controlling a gas supply to the main body; A burner 310 that provides thermal power to enable cooking of food, and an ignition rod 320 connected to the burner to provide preheating and ignition, and a mixture connected to the burner to supply gas mixed with air and gas. Heating unit 300 is provided with a tube; In the forced blow gas burner made; A blower pipe 213 into which external air is guided to the front of the blower 210; A blower port 211 for spraying external air to the outer circumferential surface of the blower pipe 213 to prevent a malfunction or a fire hazard due to a temperature rise that may be generated in the driver 200; A gas supply pipe 241 extending through the blowing pipe 213 and connected to the mixing pipe 260 while maintaining airtightness by packing or sealing; A plurality of air injection holes 212 provided in the blowing pipe 213 connected to the mixing pipe 260 to inject external air into the mixing pipe 260; A gear 102 that rotates together with the rotating rod 151 at a predetermined position of the rotating rod 151 for adjusting the opening / closing range of the control valve 220 in which the amount of gas flowing therein is controlled; The gas burner is provided with an automatic mixer control device, characterized in that it comprises a rotary switch 107 is provided on the other gear 103 engaged with the gear 102 to change the contact according to the rotation. The method according to claim 1; The gear is an improved gas burner mixer, characterized in that the gear is used relatively larger than the other gear 103 is engaged with the gear 102 is connected to the rotary rod (151). The method according to claim 1; The limit switch 152 electrically connected to the main valve and the contact is connected to the rotary rod 151 side gear 102 interlocked with the lever 150 to prevent the main valve 250 from being opened until the operation of the lever is started. Improved gas burner mixer control device characterized in that the provided. The method according to claim 1; When the ignition state is detected by the ignition rod 320 provided in the power switch and the ignition is not performed, the pre-ignition temperature is generated around the ignition so as to generate a spark in the ignition rod 320 by operating the re-ignition switch 106. Improved gas burner mixer, characterized in that the sensing rod 330 including a sensing sensor 331 for detecting the ignition rod is provided adjacent. The method according to claim 4; The sensor 331 is Improved gas burner mixer, characterized in that when the ignition is detected by the presence of the ignition state, the signal that can be opened the main valve 250 for supplying gas to the burner 310 is transmitted. The method according to claim 1; The rotary switch is operated in conjunction with the gear so that different contacts are made according to the rotation range of the gears 102 and 103 rotating according to the operation of the lever 150, each contact is rotated by the blower 210 Improved gas burner mixer control, characterized in that to increase or decrease the speed.

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