JP2005326080A - Combustion device and cooker equipped with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problems that secondary air required for combustion is subject to natural induction from the outside to the inside of a cooking chamber via an opening portion of the cooking chamber and so the construction of the opening portion determines the flow-in amount and angle of the secondary air to possibly preclude an increase in the angle control range of gas flames. <P>SOLUTION: This device comprises a blowing device 14 horizontally provided in a secondary air intake 32 neighboring a set of right and left lower burners 13a, 13b for forcibly taking secondary air therein with power supplied by a power source. Thus, flames are controlled to flow toward the center of the cooking chamber so that cooked objects are sufficiently and uniformly heated or the cooked objects are partially cooked corresponding to required heat quantity. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention mainly relates to a combustion apparatus such as a double-side grill gas grill.

  Conventionally, this type of combustion apparatus changes the inclination of the gas flame by applying an electric field to the gas flame in order to uniformly heat the food in the cooking chamber (see, for example, Patent Document 1).

FIG. 17 shows a configuration diagram of a conventional combustion apparatus described in Patent Document 1 and a cooking device equipped with the combustion apparatus. As shown in FIG. 17, the combustion apparatus body 1, the cooking chamber 2, the upper burner 3, a set of lower burners 4, a negative electrode 5, and a power source 6 are configured. A negative electrode 5 is provided in the center of 4 substantially in parallel with the lower burner 4, and a power source 6 that outputs about 10 kV DC is connected between the lower burner 4 and the negative electrode 5, thereby applying an electric field to the flame of the lower burner 4. As a result, the angle of the flame is changed, and the heat flow from the flame is attracted to the center of the cooking chamber 2 to concentrate the heated portion near the center. Changing the applied voltage level changes the flame angle and changes the heat flow distribution from the flame. For this reason, in the left-right direction of the cooking chamber, the cooked food can be heated uniformly.
JP 2001-258758 A

  However, in the conventional configuration, the secondary air necessary for combustion is naturally induced from outside the cooking chamber to the cooking chamber through the opening provided in the cooking chamber. The inflow amount and the inflow angle are determined, and there is a problem that the control range of the gas flame angle cannot be increased. That is, in the conventional configuration, since the inflow amount and the inflow angle of the secondary air are fixed by an air guide (not shown) arranged at the upper part of the lower burner 4, the heat flow from the flame cannot be changed. It was a thing. In addition, since the heating power is uniformly controlled, fine cooking is not possible and the range of ingredients that can be cooked does not increase.

  The present invention solves the above-described conventional problems, and an object thereof is to provide a combustion apparatus capable of further increasing the range of the flame shape change.

  In order to solve the above-described conventional problems, the combustion apparatus of the present invention is configured such that a plurality of blowers are installed horizontally at a secondary air intake port adjacent to a pair of left and right lower burners, and power is supplied from a power source. By forcibly taking in secondary air, the flame is controlled to go to the center of the cooking chamber. For this reason, the food is characterized in that the food can be heated sufficiently uniformly or can be partially cooked according to the amount of heat required for the food by appropriate control.

  This makes it possible to change the shape of the burner flame and change the combustion state in the cooking chamber.

  Sideways to the cooking chamber, a pair of left and right lower burners provided at the bottom of the cooking chamber, an upper burner provided at the top of the cooking chamber, and a secondary air intake provided in the pair of left and right lower burners. A first electrode provided in parallel with the air blowing port, and a first electrode provided in parallel with the air outlet, comprising: a plurality of installed blowers; a power supply for supplying power to the blower; and a control device for controlling the output of the power supply. And a second electrode provided perpendicularly to the air outlet at regular intervals, and connected to a power source so that the first electrode serves as a positive electrode and the second electrode serves as a negative electrode. By adopting a horizontal configuration on both sides, an air flow called ionic wind accompanying corona discharge at the negative electrode is supplied to the lower burner from both the upper and lower sides into the cooking chamber, so that mechanical parts such as fans can be installed. Control the flame to the center of the cooking chamber or around both ends without using it. And the cooking chamber can be realized combustion apparatus which attained a sufficiently uniform improvement of heat can cooking performance.

  1st invention is equipped with the burner, the secondary air intake provided in the said burner vicinity, and the ventilation means provided in the several different position which supplies secondary air toward the said secondary air intake, The air blowing means performed air blowing using an electronic wind obtained by applying a voltage between the electrodes via the control means.

  Thus, by supplying an air flow called ion wind accompanying corona discharge from a plurality of air blowing means toward the secondary air intake port of the burner, a plurality of air blown by the air blowing means without using mechanical parts such as a fan. The combustion apparatus can be controlled so that the direction of the flame is directed in the direction.

  2nd invention has a burner and the ventilation means which supplies secondary air toward the secondary air intake provided in the said burner vicinity, A ventilation means is between a pair of electrodes via a control means. In the combustion apparatus using the electronic wind obtained by applying a voltage to the airflow, a wind direction variable means for changing a wind direction blown from the blower means is provided between the blower means and the secondary air intake port. It was a feature.

  As a result, the direction of the air blown from the blowing means is changed by the wind direction varying means, so that the combustion apparatus can control the direction of the flame without using a mechanical component such as a fan.

  In a third aspect of the present invention, the air blowing means is configured to vary the air flow rate according to the burner thermal power.

  As a result, the amount of blowing air is varied by turning on / off the voltage application to the electrodes by the control means according to the burner thermal power, so that, for example, it is possible to prevent misfire due to ion wind from the blowing means when the thermal power is weak. it can.

  In a fourth aspect of the invention, the air blowing means starts air blowing after a predetermined time has elapsed immediately after the start of combustion.

  As a result, it is possible to prevent misfire due to ion wind from the blowing means when the flame of the burner immediately after starting combustion and igniting is small.

  In the fifth invention, the air blowing means is configured to vary the distance between the electrodes. Therefore, the combustion apparatus can change the wind speed by changing the distance between the electrodes of the blowing means.

  In a sixth aspect of the present invention, the distance between one electrode provided in the blower and the secondary air intake is variable.

  Thus, by changing the distance between the electrode on the ion wind outlet side of the blower means and the secondary air intake according to the distance between the electrodes of the blower means, the wind speed can be changed and the supply direction of the ion wind It is a combustion device that can change the directivity of.

  According to a seventh aspect of the present invention, there is provided a burner, a secondary air intake provided in the vicinity of the burner, an exhaust port for exhausting the combustion gas burned in the burner, a blowing means having a pair of electrodes, and the pair of electrodes And a control means for applying a voltage therebetween, wherein the blower means is provided in the vicinity of the exhaust port.

  By this, since a ventilation means is provided in the exhaust-port vicinity which exhausts the combustion gas in a cooking chamber, and it ventilates to the cooking chamber side, it is set as the combustion apparatus which can suppress discharge | emission of high temperature combustion gas.

  In the eighth aspect of the invention, the blowing means is provided in the vicinity of the exhaust port for exhausting the combustion gas in the cooking chamber and in the vicinity of the secondary air intake port, and both are blown to the cooking chamber side to suppress the discharge of the high-temperature combustion gas. However, the combustion apparatus can supply secondary air into the cooking chamber.

  In a ninth aspect of the invention, the air blowing means starts operating after the burner burns.

  Thus, the combustion device is configured to start the operation of the blowing means after the end of combustion, suppress the discharge of high-temperature combustion gas after the end of combustion, and supply secondary air into the cooking chamber during the combustion.

  A tenth aspect of the invention is a cooking device provided with the combustion apparatus of the first to ninth aspects of the invention.

  This is a combustion device that can control the appropriate combustion state by changing the direction of the flame of the burner by electronic wind, so when cooking, control of the combustion state only by electrical control without using a fan etc. Is possible and the quality of cooking is improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a cross-sectional view seen from the front showing the configuration of the first embodiment. The combustion apparatus of the first embodiment includes a cooking chamber 12 housed in the gas stove main body 11, a set of lower burners 13a and 13b provided at the lower portion of the cooking chamber 12, and the set of lower burners 13a. , 13b across the secondary air intake port (not shown) provided on the upper and lower sides, a power supply 15 for supplying power to the air blower 14, and a voltage for controlling the output voltage of the power supply 15 Output control means 16 is provided. The cooked product 18 placed on the grill 17 is cooked on the upper and lower surfaces by the lower burners 13a and 13b and the upper burner 19. FIG. 2 is an internal transparent perspective view of the air blowing device 14 according to the first embodiment. The blower 14 includes a first electrode 20 configured in a linear shape such as a piano wire substantially parallel to the lower burners 13a and 13b, and a plurality of needle-shaped second electrodes installed so as to be orthogonal to the first electrode 20. It consists of two electrodes 21. The power supply 15 generates a DC high voltage of about −2 kV, connects the first electrode 20 to the same potential as the casing and is connected to the ground terminal of the power supply, and the second electrode 21 has a voltage of about −2 kV. Connect to apply. Corona discharge is generated from the plurality of needle-shaped second electrodes 21 toward the first electrode 20, and accordingly, an air flow called ionic wind is generated from the secondary air inlet 22 to the second electrode 21. Is generated toward the secondary air outlet 23. In the upper and lower two pairs (four in total) of the air blowing means 14, the upper pair of air blowing means 14 and the lower pair of air blowing means 14 are independently applied to the lower burner by applying a voltage from the power source 15 as needed for cooking Control is performed such that secondary air is supplied only from the upper secondary air intake port of 13a, 13b, or secondary air is supplied only from the lower secondary air intake port of the lower burners 13a, 13b. Can do. When the secondary air is supplied only from the secondary air intake port at the upper part of the lower burners 13a and 13b, the direction of the flame formed by the lower burners 13a and 13b is directed downward. It works so as to reach the center, and the vicinity of the center of the food 18 is selectively cooked. On the other hand, when the secondary air is supplied only from the lower air inlets of the lower burners 13a and 13b, the direction of the flame formed by the lower burners 13a and 13b is upward, so that the heat flow from the flame is in the cooking chamber. 12 to reach the periphery of both ends, and the vicinity of both ends of the food 18 is selectively cooked. From the above, the conventional gas stove grill has a structure in which secondary air is introduced into the cooking chamber 12 by natural attraction along the air guide provided in the upper part of the lower burner during gas combustion. However, in the present embodiment, the ion wind generated by the blower 14 is forcibly supplied to the cooking chamber as the secondary air for gas combustion, so that it is formed by the lower burners 13a and 13b further than the gas stove having the conventional configuration. The heat flow from the flame is improved. For this reason, the cooked food 18 such as fish placed on the grill 17 is heated uniformly without causing uneven heating. Therefore, cooked food with good workmanship can be made. Moreover, since the water receiving tray provided in the bottom part of the cooking chamber is cooled by being blown from the blowing means, the temperature rise can be suppressed and ignition of the oil dripping from the cooked product can be prevented.

(Embodiment 2)
3 is a cross-sectional view seen from the front showing the configuration of the second embodiment, FIGS. 4A and 4B are operation explanatory views, and FIG. 5 is an enlarged external view of the blowing means. In the second embodiment, the second air blower 24 is provided so that the wind direction varying means 25 is positioned between the lower burners 13a and 13b substantially horizontally. By changing the direction of the secondary air from the second blower 24 by changing the direction of the wind direction varying means 25 by a control means (not shown), the secondary air intake port at the upper part of the lower burners 13a and 13b is changed. The secondary air can be supplied only, or the secondary air can be supplied only from the secondary air intake at the lower part of the lower burners 13a and 13b. When the secondary air is supplied only from the secondary air intake port at the upper part of the lower burners 13a and 13b, the direction of the flame formed by the lower burners 13a and 13b is downward, so that the heat flow from the flame is generated in the cooking chamber 12. It works so as to reach the center, and the vicinity of the center of the food 18 is selectively cooked. On the other hand, when the secondary air is supplied only from the lower air inlets of the lower burners 13a and 13b, the direction of the flame formed by the lower burners 13a and 13b is upward, so that the heat flow from the flame is in the cooking chamber. 12 to reach the periphery of both ends, and the vicinity of both ends of the food 18 is selectively cooked. From the above, the conventional gas stove grill has a structure in which secondary air is introduced into the cooking chamber by natural attraction along the air guide provided in the upper part of the lower burner during gas combustion. In the present embodiment, the ionic wind generated by the second blower 24 is forcibly supplied into the cooking chamber 12 as the secondary air for gas combustion, so that the lower burner 13a, The heat flow elongation from the flame formed in 13b is improved. For this reason, the cooked food 18 such as fish placed on the grill 17 is heated uniformly without causing uneven heating. Therefore, cooked food with good workmanship can be made. In addition, by cooling the water tray provided at the bottom of the cooking chamber, it is possible to suppress temperature rise and prevent ignition of oil dripping from the food.

(Embodiment 3)
6 (a) and 6 (b) are operation explanatory diagrams including cross-sectional views seen from the front showing the configuration of the third embodiment. FIG. 6A shows the case where the fire power of the flame formed by the lower burner is weak, and FIG. 6B shows the case where the fire power is strong. In the case where the heating power in FIG. 6A is weak, the flame may disappear if the secondary air is forcibly supplied. Therefore, the second blowing means 24 is not operated and the secondary induced naturally. A flame is formed only with air. On the other hand, when the thermal power of (b) is strong, secondary air is forcibly supplied by the second blowing means 24 to control the flow of heat flow from the flame. For this reason, by changing the method of supplying the secondary air depending on the strength of the thermal power, the cooked food 18 such as fish placed on the grill 17 is unevenly heated while the flame disappears and is kept stable. Without being heated uniformly. Therefore, cooked food with good workmanship can be made. In addition, by cooling the water tray provided at the bottom of the cooking chamber, it is possible to suppress temperature rise and prevent ignition of oil dripping from the food.

(Embodiment 4)
7 (a) and 7 (b) are operation explanatory views including cross-sectional views seen from the front showing the configuration of the fourth embodiment. FIG. 7A shows the case before the flame is formed in the lower burner, FIG. 7B shows the case after the flame is formed, and when there is no flame shown in FIG. 7A, the flame is formed. If the secondary air is forcibly supplied until then, a stable flame may not be formed. Therefore, the second blowing means 24 is not operated, and the flame is formed only by the naturally induced secondary air. On the other hand, after the stable flame of (b) is once formed, secondary air is forcibly supplied by the second blowing means 24 to control the flow of heat flow from the flame. For this reason, by changing the method of supplying the secondary air depending on the presence or absence of a stable flame, the cooked food 18 such as fish placed on the grill 17 does not have uneven heating while keeping the flame stable. It is heated uniformly. Therefore, cooked food with good workmanship can be made. In addition, by cooling the water tray provided at the bottom of the cooking chamber, it is possible to suppress temperature rise and prevent ignition of oil dripping from the food. In this way, when the flame immediately after ignition of the burner is still small, secondary air is not supplied and misfire occurs, and stable flame formation can be achieved.

(Embodiment 5)
FIGS. 8A and 8B are internal see-through perspective views showing the configuration of the fifth embodiment. FIG. 8A shows a third blowing means 28 composed of a third electrode 26 and a fourth electrode 27, and FIG. 8B shows a fifth electrode 29 and a sixth electrode 30. The 4th ventilation means 31 comprised from these is shown. Comparing FIGS. 8A and 8B, the voltage applied between the electrodes for obtaining the same air volume of the ion wind may be smaller when the distance between the electrodes is smaller (b). Sex is poor (a). For this reason, when it is desired to reduce the power consumption of the power source 15 for obtaining the ion wind, the configuration of (b) is preferably employed. When the directivity of the ion wind is desired, the configuration of (a) is employed. Good to do.

(Embodiment 6)
9 is an internal transparent perspective view showing one configuration of the sixth embodiment, FIG. 10 is a cross-sectional view seen from the front, FIG. 11 is an internal transparent perspective view showing another configuration of the sixth embodiment, FIG. 12 is a cross-sectional view as seen from the front. 9 and 10 show a case where the distance between the electrodes of the blower is large, and FIGS. 11 and 12 show a case where the distance between the electrodes is small. When the distance between the electrodes of the blower means is large, ion wind is supplied from the third electrode 26 toward the fourth electrode 27, but a certain degree of directivity is obtained, so that the cooking chamber is located above the lower burner. The secondary air outlet port 23 can be brought into contact with the secondary air inlet port 32 provided on the side wall, and the distance between the secondary air inlet port 32 and the secondary air outlet port 23 can be reduced. A blowing means can be configured. On the other hand, FIGS. 11 and 12 show the case where the distance between the electrodes of the air blowing means is small. When the distance between the electrodes of the blower means is small, the ion wind is supplied from the third electrode 26 toward the fourth electrode 27, but the directivity is not obtained so that the side wall of the cooking chamber is formed at the upper part of the lower burner. It is necessary to take the distance between the secondary air inlet 32 and the secondary air outlet 23 provided in the above, but since the distance between the electrodes of the third electrode 26 and the fourth electrode 27 is reduced, it is the same. The power consumption is small to obtain the ionic wind of the air volume.

(Embodiment 7)
FIG. 13 is a cross-sectional view seen from the side showing the configuration of the seventh embodiment, and FIG. 14 is an internal transparent perspective view showing a blowing means in which a part of the configuration of the seventh embodiment is enlarged. The door 34 is located in front of the gas stove 11 and opens and closes when the food 18 is put in and out, and the exhaust port 35 for exhausting combustion gas generated in the cooking chamber 12. By providing the air blowing means 36, the ion air 36a is blown into the cooking chamber 12 so that the exhaust gas 35a is not easily discharged. For this reason, since it can suppress that the heat | fever generate | occur | produced in the cooking chamber 12 is discharged | emitted easily out of the cooking chamber 12, the fall of the heating efficiency to the foodstuff 18 can be suppressed.

(Embodiment 8)
FIG. 15 is a cross-sectional view seen from the front showing the configuration of the eighth embodiment. A blower means 14 is provided horizontally at a secondary air intake port (not shown) of the cooking chamber 12, and a fifth blower means 36 is provided in the vicinity of the exhaust port at the rear of the cooking chamber 12 (not shown). In order to prevent the exhaust gas from being easily discharged, the configuration is such that the ionic wind is blown into the cooking chamber 12 as in the seventh embodiment. However, if the combustion gas is not discharged from the exhaust port, Since the secondary air is not naturally attracted naturally, the flow of the heat flow of the flame formed by the lower burners 13a and 13b becomes worse, and the cooking heating state is insufficient.

  For this reason, while the ionic wind is blown into the cooking chamber from the exhaust port by the blowing means, the configuration is such that the ionic wind is forcedly supplied from the secondary air intake port as the secondary air by the blowing means 14 so that the heat flow of the flame is The flow can be improved.

(Embodiment 9)
FIG. 16 is a cross-sectional view seen from the front showing the configuration of the ninth embodiment. Although not shown, a fifth blower means 36 is provided in the vicinity of the exhaust port at the rear of the cooking chamber. In order to prevent the exhaust gas from being easily discharged, the configuration is such that the ionic wind is blown into the cooking chamber 12 as in the seventh embodiment. However, if the combustion gas is not discharged from the exhaust port, The secondary air is less likely to be naturally attracted, but the configuration is such that ion air is blown into the cooking chamber 12 after completion of combustion, so that the secondary air can be naturally attracted even during combustion. The air supply means to supply becomes unnecessary.

  As described above, in the conventional combustion apparatus according to the present invention, since the secondary air necessary for combustion is naturally induced from the outside of the cooking chamber to the cooking chamber through the opening provided in the cooking chamber, The amount of inflow and the angle of inflow of the 2-letter air is determined depending on the configuration of the part, and the control range of the angle of the gas flame cannot be increased, but the corona discharge generated between the electrodes to which a high voltage is applied By supplying an air flow called ionic wind to the inside of the cooking chamber, the angle of the flame can be controlled and the range of the shape change of the flame can be increased without using a mechanical part such as a fan. It can also be applied to applications such as devices that improve combustion efficiency.

Sectional drawing seen from the front which shows the structure of the combustion apparatus in Embodiment 1 of this invention Internally transparent perspective view showing the configuration of the blower of the combustion apparatus of the first embodiment Sectional drawing seen from the front which shows the structure of the combustion apparatus in Embodiment 2 of this invention (A) First operation explanatory diagram of the combustion device of the second embodiment (b) Second operation explanatory diagram of the combustion device of the second embodiment Explanatory drawing which shows the whole structure of the combustion apparatus in Embodiment 3 of this invention. (A) 1st figure explaining the cross section seen from the front of the combustion apparatus of Embodiment 3 (b) 2nd figure explaining the cross section seen from the front of the combustion apparatus of Embodiment 3 (A) 1st explanatory drawing of the cross section seen from the front which shows the whole structure of the combustion apparatus in Embodiment 4 of this invention (b) Seen from the front which shows the whole structure of the combustion apparatus in Embodiment 4 Second explanatory view of the cross section (A) 1st explanatory drawing of the internal permeation | transmission perspective view seen from the front which shows the structure of the combustion apparatus in Embodiment 5 of this invention (b) Seen from the front which shows the structure of the combustion apparatus in Embodiment 5 Second explanatory view of the internal transparent perspective view Internally transparent perspective view showing a configuration of a combustion apparatus in Embodiment 6 of the present invention Sectional drawing seen from the front which shows the structure of the combustion apparatus in Embodiment 6 Internally transparent perspective view showing the configuration of the combustion apparatus in the sixth embodiment Sectional drawing seen from the front which shows the structure of the combustion apparatus in Embodiment 6 Sectional drawing seen from the side which shows the structure of the combustion apparatus in Embodiment 7 of this invention Internally transparent perspective view showing the configuration of the combustion apparatus in the seventh embodiment Sectional drawing seen from the front which shows the structure of the combustion apparatus in Embodiment 8 of this invention Sectional drawing seen from the front which shows the structure of the combustion apparatus in Embodiment 9 of this invention Internally transparent perspective view showing the entire configuration of a conventional combustion apparatus

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Gas stove main body 13a, 13b Lower burner 14 Air supply means 15 Power supply 16 Voltage output control means 20 1st electrode 21 2nd electrode 22 Secondary air inflow port 23 Secondary air outflow port 24 2nd air blower means 25 Wind direction variable means 26 3rd electrode 27 4th electrode 28 3rd ventilation means 29 5th electrode 30 6th electrode 31 4th ventilation means 32 Secondary air intake port 35 Exhaust port 36 5th ventilation means 37 7th The electrode 38 The eighth electrode

Claims (10)

A burner, a secondary air intake provided in the vicinity of the burner, and a blowing means provided at a plurality of different positions for supplying secondary air toward the secondary air intake, the blowing means being a control means Combustion apparatus which blows using the electronic wind obtained by applying a voltage between electrodes via. A burner, a secondary air intake provided in the vicinity of the burner, and a blowing means for supplying secondary air toward the secondary air intake, the blowing means being a pair of electrodes via the control means In a combustion apparatus using an electronic wind obtained by applying a voltage therebetween, a wind direction varying means for changing a wind direction blown from the blower means is provided between the blower means and the secondary air intake port. Combustion device featuring The combustion apparatus according to any one of claims 1 and 2, wherein the blower means is configured to vary the amount of blown air according to the burner thermal power. The combustion apparatus according to any one of claims 1 to 3, wherein the air blowing means is configured to start air blowing after a predetermined time has elapsed immediately after the start of combustion. The combustion apparatus according to any one of claims 1 to 4, wherein the blower means is configured to vary a distance between the electrodes. The combustion apparatus according to claim 5, wherein the distance between one electrode provided in the blower and the secondary air intake is variable. A voltage is applied between the pair of electrodes, a burner, a secondary air intake port provided in the vicinity of the burner, an exhaust port for exhausting the combustion gas burned in the burner, a blowing means having a pair of electrodes A combustion apparatus comprising: a control means; and the blower means is provided in the vicinity of the exhaust port. The combustion apparatus according to claim 7, wherein the blowing means is provided in the vicinity of the secondary air intake port and in the vicinity of the exhaust port. The combustion apparatus according to claim 7 or 8, wherein the blower means starts to operate after the burner burns. A cooking device comprising the combustion device according to any one of claims 1 to 9.

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