JPS60155832A - Gas composite cooker - Google Patents

Abstract

PURPOSE:To form burnt film on the surface of a food to be heated in an early period in order to prevent the outflow of soup and shorten a cooking time by a method wherein the combustion hot air of a gas burner is sent into a baking chamber by a circulating fan to circulate forcibly to improve the rise-up characteristic of the temperature in the baking chamber, in case the cooking is effected by using high-frequency heating and gas burning heating in parallel. CONSTITUTION:When a timer knob 34d for high-frequency heating is set at a predetermined time and an initiating button 34b for heating is thrown in, a high-frequency oscillator 7 is operated and high-frequency wave is introduced into the baking chamber 1 through a wave guide 8. A blower 12 is operated also and the ventilating air thereof cools the high-frequency oscillator 7 and is introduced into the baking chamber 1 while a mode uniforming device 11 is rotated. In case of gas combustion heating, gas is ignited and burnt by regulating with a temperature control knob 34c so that the temperature in the baking chamber becomes the optimum cooking temperature. Combustion hot air flows into the baking chamber 1 through a communicating hole 6 and simultaneously heats the inside of the baking chamber 1 to a predetermined temperature rapidly by the operation of the circulating fan 13. When the high-frequency heating and the gas combustion heating are utilized simultaneously, cooking may be effected even during a preheating time by the gas combustion heating and the cooking time may be shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION Conventionally, as a gas combination cooking device that combines a gas oven and a microwave oven, there is a cooking device that is independent from the roasting chamber, as shown in Japanese Utility Model Application Publication No. 50-60648 and Japanese Utility Model Application Publication No. 51-54337. One is equipped with a gas burner combustion chamber and indirectly heats the roasting chamber, and the other is
A system in which a gas burner is provided in the roasting chamber is known, as disclosed in Japanese Patent No. 1-96650.

Since the former method uses an indirect heating method, the temperature rise in the roasting chamber is slow. For this reason, when cooking using both high-frequency heating and gas combustion heating, cooking by high-frequency heating takes precedence and boiling liquid comes out from inside the object to be heated, and this broth is then heated by gas combustion heating. As a result of the evaporation, the object to be heated becomes dry, which is undesirable. In order to solve this problem, if the high-frequency heating is slowed down in time with the start-up of gas combustion heating, there is a drawback that the cooking time becomes longer.

In addition, in the latter case, since the gas burner is installed protruding into the roasting chamber, the gas burner acts as an antenna and causes radio wave leakage, which makes countermeasures complicated and the cooking space inside the roasting chamber becomes narrow. There is.

Furthermore, since it does not have a fan that blows air to the gas burner from the outside, the input to the gas burner is limited in terms of temperature rise of the burner and supply of combustion air to the burner.As a result, the above drawbacks of the former are completely eliminated. It was not possible to shorten the cooking time enough to solve the problem.

The purpose of the present invention is to solve the various drawbacks of the above-mentioned conventional examples, and to create an ideal configuration for a gas composite cooking device by considering the arrangement of a high-frequency oscillator, a combustion chamber, and a circulation fan in the roasting chamber. do.

An example will be explained below with reference to figures. (1) is an exterior (2)
) The inner surface of the roasting chamber is hollowed out, and the outer surface is provided with a heat insulating layer (3) of glass wool or the like.

(4) is a combustion trap formed in the exterior (2) below the roasting chamber (1) independently of the roasting chamber, and a gas burner (5) is installed therein. The combustion hot air from this gas burner (5) slightly heats the lower wall of the roasting chamber (1), but is introduced into the roasting chamber (1) through the communication hole (6) provided at the rear of the roasting chamber (1). It is now possible to do so. (7) is a high-frequency oscillator such as a magnetron that supplies high-frequency radio waves into the roasting chamber (1) from the introduction part (9) at the upper part of the roasting chamber (1) via the waveguide (8);
The antenna (7f is inserted into the waveguide (8).α0) is a radio wave-transparent heat-resistant cover that partitions the upper part of the roasting chamber (1) including the radio wave introduction part (9), and the combustion heat is introduced. The part (9) enters the waveguide (8) and generates a high frequency oscillator (7).
). ■ is this heat resistant cover 0
The air blown air surrounded by The radio wave mode in the chamber (1) is made uniform to eliminate uneven heating.

■ is a circulation fan that is rotatably housed in a storage chamber pronunciation that is connected to the roasting chamber (1) at the rear of the roasting chamber (1), and a branch installed inside the roasting chamber (1). The central opening of the plate (151) serves as an air intake port (18 &) at the center of a small perforated plate made of wire mesh, etc., which becomes the partition wall (18) that covers the communication part between the storage chamber (14) and the roasting chamber (1) through the central opening (151). Intake air and divide it into a partition wall 08)
From the outlet (18b) on both sides of the branch plate (15
) is blown out through both sides and the bottom of the roasting chamber to raise the temperature inside the roasting chamber and to eliminate temperature unevenness.

The rotating shaft (16) of this circulation fan αJ is connected to the shaft of the storage chamber (motor 07 provided outside the rear of the fan), and the fan (13) is rotated at high speed by this motor 07)1.

The branch plate α5) connects the combustion chamber (4) through the communication hole (6).
It guides the combustion fuel introduced from the storage chamber (14J direction), and the partition wall (18) allows the combustion hot air to pass through, but blocks high frequency radio waves and prevents radio waves from entering the storage chamber (14J). The α mark is the front opening (4) of the roasting chamber (1).
) The lower side of the lid body is pivoted to the exterior side (21) so that it can be opened and closed freely, and there is a double glass plate (2
A viewing window (support) consisting of 2a) and 22b is formed. A punching plate (23) for shielding radio waves or a transparent conductive layer is attached to the opposing inner surface of at least one of the power lath plates (22a) and (22b) (22b). (Foundation) is a lid body 0 facing the opening periphery of the roasting chamber (1)
9! The choke space for preventing fC1 wave leakage absorbs radio waves that are about to leak from between the opening periphery of the roasting chamber (1) and the lid 09) and prevents radio waves from leaking to the outside. It is. (25) is a metal shield made of a braided metal fiber attached to the lid on the outside of the chalk space (foundation), and is installed around the opening of the roasting chamber (1) when the lid 0q is closed. Should the choke space (
This metal shield □□□ and the metal contact area between the projection and the Japanese film block the radio waves that could not be blocked by the metal shield and also prevent the leakage of combustion hot air.

The fin is an exhaust path that exhausts the hot air of combustion inside the roasting chamber (1) to the outside of the exterior (2), and there are a pair of exhaust pipes (27a) that communicate with the exhaust ports (■) provided on both sides of the upper part of the roasting chamber (1). The upper end opening of (27b) communicates with the outside of the exterior (271).
), and the exhaust gas is collected from a pair of exhaust pipes (27&) (27b) into an exhaust collection tube (27d) and exhausted to the outside of the exterior (2). 2 is a duct for discharging air after cooling the high frequency oscillator (7) and rotating the radio wave mode homogenizer (11), and is connected to the exhaust gas collection N (27d). 00) is motor 0'? ) is a shielding frame that covers the outer periphery of the
If radio waves enter the inner part of the storage chamber, the rotation axis α0 will act as an antenna and may leak to the outside. Therefore, the outer periphery of the motor
It is covered with a shielding frame consisting of (b) and (b). (31)
is a self-cooling fan that cools the motor 07), which takes in air from the punched plate (60&) of the shielding frame and exhausts it from the pores (o) of the support plate that supports the motor 0η. .

(Foundation) is an operation section installed on the front of the upper exterior (2) of the lid body (19!).From the right side, there is a gas operation knob (34a) including gas ignition, a high-frequency heating start button (4b), a gas Temperature control knob that controls the temperature inside the roasting chamber during combustion (
340), a high-frequency heating timer knob (4d), and a gas combustion timer knob (64e), each of which can be operated independently.

(35) is a thermosensor set by the temperature control knob (34 (1)) installed in the roasting chamber (1) to sense the room temperature. 16 &) (36b) (filter 6C) are communication holes (6) Exhaust port (support), duct) A punching plate for FC radio wave shielding installed in the communication part of (29), (support) is an electrical component of the high frequency oscillator (7).

Next, the present invention will be explained in detail.

(c)) In the case of high frequency heating.

When the high-frequency heating timer knob (34d) is set to a predetermined time and the heating start button (34b) is turned on, the high-frequency oscillator (7) is activated and high-frequency waves are transmitted through the waveguide (8) to the roasting chamber (1). ) is introduced within. On the other hand, the blower (2) is also activated, and its air cools the high-frequency oscillator (7) and is introduced into the roasting chamber (1) to rotate the mode homogenizer (0). Therefore, the high frequency waves supplied into the roasting chamber are stirred by the mode homogenizer Qll, so that the object to be heated is uniformly heated. The air blown by rotating the mode homogenizer αυ is discharged to the exterior of the exterior (2) through the duct (29+).

(b) In the case of gas combustion heating.

First, the temperature control knob (340) is used to adjust the inside of the roasting chamber (1) to the optimum cooking temperature for the object to be heated, and the gas operation knob (34a) is used to ignite and burn. The hot combustion air enters the roasting chamber (1) through the communication hole (6) and at the same time, the circulation fan 0J is activated to rapidly heat the inside of the roasting chamber (1) to a predetermined temperature. (Preheating period) Once heated to a predetermined temperature, place the object to be heated in the roasting chamber (1) and turn the gas combustion timer knob (34e) to set the roasting time and the thermosensor (35) will work. The gas combustion is repeatedly turned on and off, keeping the inside of the roasting chamber at a predetermined temperature, and the cooking ends when the time set on the timer ends. The combustion exhaust gas is exhausted to the outside through the exhaust path (77).

10) When high frequency heating and gas combustion heating are used together.

If high-frequency heating and gas combustion heating are used at the same time, cooking will be done even during the preheating time by gas combustion heating, which will shorten the cooking time.

Further, depending on the type of the object to be heated and the type of cooking, the first half can be heated by high frequency and the second half can be heated by gas combustion, or the opposite operation can be performed.

Furthermore, it is also possible to perform the first half or the second half using only one of high-frequency heating and gas combustion heating, and the other half at the same time using both heating means.

As described above, unprecedented versatile cooking is possible and dietary habits can be improved.

As described above, the present invention provides a roasting chamber provided in an exterior, a lid that closes the front opening of the roasting chamber, a high-frequency oscillator that introduces high-frequency radio waves into the roasting chamber from the upper part of the roasting chamber, and the exterior. A combustion chamber is provided below the roasting chamber independently from the roasting chamber, and a partition wall is formed at the rear of the roasting chamber and has an air inlet in the center and an outlet on both sides. a storage chamber communicating with the roasting chamber; a circulation fan installed in the storage chamber to circulate hot combustion air; and a circulation fan installed within the combustion chamber to introduce the hot combustion air into the roasting chamber to heat the inside of the roasting chamber. When cooking using both high-frequency heating and gas combustion heating, the gas combustion heating method uses a circulation fan to send the combustion hot air of the shiga spanner into the roasting chamber and circulate it strongly. In addition, the temperature in the roasting room has a good rise characteristic, which quickly forms a film due to charring on the surface of the object to be heated, preventing the boiling liquid from flowing out, improving the finished state of the object to be heated, and shortening the cooking time. can.

In addition, since the combustion chamber is formed below the roasting chamber, the hot combustion air is easily introduced into the roasting chamber due to the action of the circulation fan, which further improves the temperature rise characteristic of the roasting chamber. Since the hot combustion air is circulated horizontally by the circulation fan, it is possible to heat the food not only from the top side but also from the side, allowing for fast cooking with uniform finishing.

Furthermore, it is possible to supply high-frequency radio waves from the top surface of the roasting chamber with the best high-frequency distribution in the roasting chamber, making it ideal as a gas combination cooker that performs high-frequency heating and gas-fired roasting heating. It can have a compact configuration.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the gas compound cooking device of the present invention, and Fig. 2 is a perspective view of the gas compound cooker of the present invention.
FIG. 6 is a sectional view taken along line AA in the figure, FIG. 6 is a sectional view taken along line BB in FIG. 1, and FIG. 4 is a plan view with the upper surface portion of the exterior removed. (1)... Roasting chamber, (19)... Lid, (7)... High frequency oscillator, (4)...
・Combustion chamber, (18B)...Intake port, (18b)
(18b)...Air outlet, (18)...
Partition wall, 04)...Storage room, 03no...
・Circulation fan, (5)...gas burner. Patent applicant: Sanyo Electric Co., Ltd. Representative: Ken Ii Kungai (1 person)

Claims (1)

[Claims] (1) A roasting chamber provided inside the exterior, a lid that closes the front opening of the roasting chamber, a high-frequency oscillator that introduces high-frequency radio waves into the roasting chamber from the upper part of the roasting chamber, and inside the row housing. A combustion chamber is provided below the roasting chamber independently from the roasting chamber, and a partition wall is formed at the rear of the roasting chamber and has an air inlet in the center and an outlet on both sides. A storage chamber communicating with the roasting chamber, a circulation fan installed in the storage chamber to circulate hot combustion air, and a circulation fan installed in the combustion chamber to introduce the hot combustion air into the roasting chamber to heat the inside of the roasting chamber. This invention relates to an improvement in a gas composite cooker.