Cooking appliance

Abstract

To provide a cooking appliance capable of controlling thermal effects on a flow rate control device to realize close installment of the flow rate control device and heating means.SOLUTION: In a cooking appliance comprising: a body; a heating region 2 provided in the body; heating means 5, 6 for heating food in the heating region 2 by combustion of fuel gas; and a flow rate control device 17 that is arranged in a gas supply path 16 for supplying the fuel gas to the heating means 5, 6 and controls a flow rate of the fuel gas, the flow rate control device 17 has a heat radiation unit 24 that radiates heat of the flow rate control device obtained directly or indirectly by combustion of the heating means 5, 6.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a cooking appliance including a flow rate regulator that regulates the flow rate of fuel gas supplied to a heating means. [Background technology]

[0002] Among cooking appliances, those equipped with a flow rate regulator for regulating the flow rate of fuel gas supplied to the heating means are known. This type of flow rate regulator is installed in a gas supply path for supplying fuel gas to the heating means, and adjusts the degree of opening and closing of the gas supply path by a valve mechanism driven by a stepping motor (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2009-041871 Summary of the Invention [Problem to be solved by the invention]

[0004] For example, a cooking appliance such as a gas stove is provided with a grill chamber as one of its heating zones. In this case, it is necessary to house the heating means for heating the food in the grill chamber and the flow rate regulator for regulating the amount of fuel gas supplied in a relatively narrow space inside the body of the cooking appliance. For this reason, the heating means and the flow rate regulator are installed close to each other.

[0005] By arranging the heating means and the flow rate control device close to each other, the piping distance between the heating means and the flow rate control device can be relatively short, but on the other hand, there is a risk that the flow rate control device will be adversely affected by heat when the food to be cooked is heated in the cooking chamber.

[0006] In view of the above, an object of the present invention is to provide a cooking appliance that can suppress the influence of heat on a flow rate regulator and realize close placement of a heating means and a flow rate regulator. [Means for solving the problem]

[0007] In order to achieve this object, the present invention provides a cooking device comprising a main body, a heating area provided in the main body, heating means for heating food in the heating area by combustion of fuel gas, and a flow rate adjusting device interposed in a gas supply path for supplying the fuel gas to be burned by the heating means and adjusting the gas flow rate of the fuel gas, wherein the flow rate adjusting device has a heat dissipation section for dissipating heat received by the flow rate adjusting device directly or indirectly by combustion of the heating means from the flow rate adjusting device (first invention).

[0008] According to the first aspect of the present invention having the above configuration, the influence of heat from the heating means on the flow rate regulator can be suppressed, and the heating means and the flow rate regulator can be installed relatively close to each other, thereby improving the degree of freedom in component layout.

[0009] In addition, in the first invention, the heat dissipation portion is provided so as to be in contact with an airflow toward the heating means that is generated when the heating means burns (second invention).

[0010] According to the second aspect of the present invention having the above configuration, the airflow directed toward the heating means promotes heat dissipation from the heat dissipation section, so that the flow rate adjusting device can be cooled effectively.

[0011] As a specific example of the second invention, the heating area is constituted by a heating chamber provided inside the main body and capable of storing the food to be cooked, the heating means is positioned in a position where it can heat the food to be cooked stored in the heating chamber, and the air flow that the heat dissipation part comes into contact with is secondary air for combustion that is generated toward the heating means or the heating chamber when the heating means is burning (third invention).

[0012] Another specific example of the second invention is one in which the heating means is capable of heating the food being cooked in the heating area, the heating means has an inlet for primary combustion air located within the main body, and the air flow that the heat dissipation section comes into contact with is primary combustion air that is generated toward the inlet of the heating means when the heating means is burning (fourth invention).

[0013] When fuel gas is supplied to the heating means, the flow of the fuel gas draws in surrounding air as primary combustion air, and the fuel gas and primary combustion air are mixed to form a mixed gas that is used for combustion in the heating means. Next, when the mixed gas is ignited, secondary combustion air is drawn in from around the flame, and the heating means forms a combustion state with a stable flame.

[0014] In this way, the primary combustion air and secondary combustion air become air flows toward the heating means and are generated inside the main body. By making the heat radiating section contact the secondary combustion air as in the second aspect of the invention, or by making the heat radiating section contact the primary combustion air as in the third aspect of the invention, it is possible to improve the heat radiating effect of the heat radiating section at low cost and to cool the flow rate control device efficiently and reliably without using a device that forcibly creates airflow, such as a fan.

[0015] In addition, in the first invention, the heat dissipation section is characterized in that it includes heat dissipation fins that dissipate heat by coming into contact with air (fifth invention).

[0016] According to the fifth aspect of the present invention, the heat dissipation effect of the heat dissipation portion can be dramatically improved by the heat dissipation fins. The fifth aspect of the present invention can be combined with the third or fourth aspect of the present invention.

[0017] In addition, in the first to fifth inventions, the flow rate adjusting device is provided with a connecting part that is connected and fixed to the main body, and the heat dissipating part is provided on the connecting part (sixth invention).

[0018] According to the sixth aspect of the present invention, the connecting portion can be given a heat dissipation function to serve as a heat dissipation portion, and therefore the flow rate control device can be made more compact than when the connecting portion and the heat dissipation portion are provided in different positions.

[0019] The connecting portion may be integrally molded as part of the flow control device, or may be a separate body that is attached to the flow control device. Configuring the connecting portion as a separate body from the flow control device is advantageous because it makes it easier to change the shape of the connecting portion. [Brief explanation of the drawings]

[0020] [Figure 1] FIG. 1 is an explanatory diagram showing a schematic configuration of a main part of an embodiment of the present invention. [Figure 2] FIG. 1 is an explanatory diagram showing the krill device from a rear view. [Figure 3] FIG. 2 is a side view of the grill device. [Figure 4] FIG. 2 is an explanatory plan view of a bottom-fire burner. [Figure 5] FIG. 4 is an explanatory diagram showing the flow of primary combustion air at the rear end of the lower burner. [Figure 6] FIG. 4 is an explanatory diagram showing the flow of secondary air for combustion in the flame holes of the lower burner. [Figure 7] FIG. 10 is a perspective view showing a modified example of the heat dissipation portion. DETAILED DESCRIPTION OF THE INVENTION

[0021] An embodiment of the present invention will be described with reference to the drawings. Fig. 1 shows a schematic diagram of a grill device 1. This grill device 1 constitutes a main part of a gas stove, which is a cooking appliance of this embodiment. Although not shown, the gas stove of this embodiment is a gas stove equipped with multiple burners on the top surface, and the grill device 1 is incorporated and housed inside the box-shaped main body of the gas stove.

[0022] 1, the grill device 1 includes a grill chamber 2 and a grill door 3 that can be freely opened and closed to close the front opening of the grill chamber 2. The grill chamber 2 corresponds to the heating chamber, which is the heating area in the present invention.

[0023] The grill chamber 2 is provided with an upper burner 5 that heats food placed on the grill 4 from above, and a lower burner 6 that heats food from below. The upper burner 5 and the lower burner 6 are controlled by a grill controller 7. The upper burner 5 and the lower burner 6 correspond to the heating means in the present invention.

[0024] An operation panel 8 is provided on the front of the stove body (not shown) for inputting various settings and cooking operation instructions to the grill controller 7.

[0025] Ignition of the upper burner 5 is performed by driving the upper burner igniter 10 to form a spark discharge of the upper burner ignition electrode 9, and ignition of the lower burner 6 is performed by driving the lower burner igniter 12 to form a spark discharge of the lower burner ignition electrode 11.

[0026] Furthermore, whether or not the upper burner 5 is ignited is detected by an upper burner thermocouple 13, and whether or not the lower burner 6 is ignited is detected by a lower burner thermocouple 14. The grill chamber 2 is provided with a grill temperature sensor 15 that detects the temperature inside the grill chamber 2.

[0027] Fuel gas is supplied to the upper burner 5 and the lower burner 6 via a gas supply pipe 16 (gas supply path). An electric valve unit 17 is installed in the gas supply pipe 16. The electric valve unit 17 is equipped with main gas valves 18 and 19 that switch between supplying and cutting off fuel gas to the upper burner 5 and the lower burner 6, respectively, and gas amount control valves 20 and 21. The gas supply pipe 16 corresponds to the gas supply path in this invention, and the electric valve unit 17 corresponds to the flow rate control device in this invention.

[0028] The gas amount adjustment valves 20 and 21 provided in the electric valve unit 17 are driven to open and close by a stepping motor (not shown), which is also provided in the electric valve unit 17 .

[0029] 2 and 3, the electric valve unit 17 includes a valve housing 22 and a connecting part 24 that is fixedly connected to the bottom plate 23 of the gas stove body, and is provided adjacent to the rear side of the grill chamber 2. As will be described in detail later, the connecting part 24 is configured to function as a heat dissipation part for dissipating heat from the electric valve unit 17. The heat from the electric valve unit 17 is heat transferred directly or indirectly by combustion in the upper burner 5 and the lower burner 6, and can mainly be radiant heat received during cooking using the grill device 1.

[0030] Inside the gas stove body, an air current is generated toward the inside of the grill device 1. This air current is generated by cooking in the grill chamber 2. That is, taking one side of the bottom burner 6 as an example with reference to Figures 4 to 6, the bottom burner 6 includes a burner body 25, a gas inlet 26, and a plurality of flame holes 27, as shown in Figure 4.

[0031] The burner body 25 is formed in a cylindrical shape elongated in the front-rear direction and has a closed tip. The gas inlet 26 is provided at the rear end of the burner body 25, and a nozzle 28 for supplying fuel gas is inserted into an opening in the center of the gas inlet 26. The opening area of ​​the gas inlet 26 is formed to be sufficiently larger than that of the tip opening of the nozzle 28.

[0032] 5, the fuel gas ejected from the nozzle 28 flows toward the inside of the burner body 25 while drawing in external air from an inlet 29 as primary air for combustion (hereinafter referred to as primary air). Inside the burner body 25, the fuel gas and the primary air are mixed to generate mixed gas.

[0033] In this embodiment, an intake port 29 for taking in primary air is opened in a member that blocks the opening of the gas introduction passage 26 of the lower burner 6, but it is also possible to take in primary air using the opening of the gas introduction passage 26 as an intake port without providing a member.

[0034] A plurality of burner holes 27 are formed at predetermined intervals along the longitudinal direction of the burner body 25. The mixed gas inside the burner body 25 is ejected from the burner holes 27 and ignited to form a flame. At this time, as shown in Fig. 6, external air is supplied to the flame of the burner holes 27 as secondary air for combustion (hereinafter referred to as secondary air), following the flow of the mixed gas ejected from the burner holes 27.

[0035] As described above, the primary air and the secondary air form flows from the rear outside of the grill chamber 2 toward the lower burner 6 and the upper burner 5.

[0036] 2 and 3, in this embodiment, the electric valve unit 17 is arranged so that at least the connecting part 24 is in contact with the air flow (air flow that becomes primary air and secondary air) heading toward the grill chamber 2. When the lower burner 6 and upper burner 5 of the grill device 1 are combusted, the primary air and secondary air flow while promoting heat dissipation from the connecting part 24. As a result, the connecting part 24, which functions as a heat dissipation part, efficiently cools the electric valve unit 17.

[0037] In this embodiment, the connecting portion 24 functions as a heat dissipation portion, which prevents an increase in the number of parts and keeps costs low, but the present invention is not limited to this.

[0038] For example, the heat dissipation unit 30 shown in Fig. 7 may be attached to the connecting unit 24, or the heat dissipation unit 30 may be used as the connecting unit. The heat dissipation unit 30 shown in Fig. 7 includes a plurality of heat dissipation fins 31 formed at predetermined intervals, and is made of a material with high heat dissipation properties, such as an aluminum alloy.

[0039] 7 is attached integrally to the inside of the connecting part 24 by means of screws or the like. By arranging the heat dissipation part 30 in a position where the air (primary air and secondary air) flowing toward the lower burner 6 and upper burner 5 passes through the gaps in each heat dissipation fin 31, not only is the air flow not impeded, but the air can also be efficiently brought into contact with the wide surface area of ​​each heat dissipation fin 31, thereby achieving high cooling efficiency.

[0040] In the above embodiment, the grill device 1 is described as being installed inside the main body of a gas stove, but the cooking appliance of the present invention is not limited to this. For example, although not shown, the present invention can also be suitably employed in an induction stove with a built-in grill device equipped with a gas burner, a gas oven, etc. [Explanation of symbols]

[0041] 2...grill compartment (heating area, heating compartment), 6...bottom burner (heating means), 16...gas supply pipe (gas supply path), 17...electric valve unit (flow rate regulator), 24...connecting part (heat dissipation part), 29...intake port, 30...heat dissipation part, 31...heat dissipation fins.

Claims

1. A cooking device comprising a main body, a heating area provided in the main body, a heating means for heating food in the heating area by combustion of fuel gas, and a flow rate adjusting device provided in a gas supply path for supplying the fuel gas to be burned by the heating means and for adjusting the flow rate of the fuel gas, The cooking device is characterized in that the flow rate adjusting device has a heat dissipation section that dissipates heat received by the flow rate adjusting device directly or indirectly due to combustion by the heating means from the flow rate adjusting device.

2. 2. The cooking device according to claim 1, wherein the heat radiating portion is provided so as to be in contact with an airflow toward the heating means, which is generated when the heating means is burning.

3. The heating area is configured by a heating chamber provided inside the main body and capable of storing the food to be cooked, The heating means is disposed at a position where it can heat the food contained in the heating chamber, 3. The cooking device according to claim 2, wherein the airflow that the heat dissipation portion comes into contact with is secondary air for combustion that is generated toward the heating means or the heating chamber when the heating means is burning.

4. The heating means is capable of heating the food in the heating area, and an intake port for primary air for combustion of the heating means is disposed in the main body, 3. The cooking device according to claim 2, wherein the airflow that the heat dissipation portion comes into contact with is primary combustion air that is generated toward the intake port of the heating means when the heating means is burning.

5. 2. The cooking device according to claim 1, wherein the heat radiating portion includes heat radiating fins that radiate heat by contacting with air.

6. The flow rate adjusting device includes a connecting portion that is connected and fixed to the main body, 6. The cooking device according to claim 1, wherein the heat dissipation portion is provided in the connecting portion.

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