JPH03258219A - Cooker for electronic range - Google Patents

Abstract

PURPOSE:To enable steam cooking and scorching together with regular pressure cooking, to be performed by setting a pressure regulating means on the partial section of a vessel main-body or a cover body for containing a material to be cooked, molded from the thermo-plastic resin of micro-wave transmitting property having heat and pressure resistances, and by setting the material to be cooked, at an interval between the material and a bottom section in the vessel main-body. CONSTITUTION:A cooker 1 is of glass fiber reinforced polyphenylene sulfide resin(PPS resin) injection-molded as the thermoplastic resin of microwave transmitting property having heat and pressure resistances, and 4 is a pressure regulating valve set on the central section of a cover body 3 as a pressure regulating means. The pressure regulating valve 4 consists of a weight 5 and a nozzle 6 communicated with a vessel internal- section, and they are loosely fitted on each other to form the valve 4. Besides, a material to be cooked is set at an interval between the material and the bottom section of a vessel main-body 2, and at least a section in contact with the material to be cooked of a heat generating bearing body 31 is provided with a heat generating layer 30 having microwave-absorbing heat-generating property is set, and scorching can be formed.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention is a microwave oven that can be used in a microwave oven and not only can perform pressure cooking, but also has the functions of steam cooking and browning depending on the food being cooked. related to cooking utensils.

Conventional technology Conventionally, this type of microwave oven cooker is made of microwave-transparent resin, and the microwave oven is used to heat the food to be cooked in a sealed container, and the internal pressure is increased by the vapor pressure to raise the boiling point. For several years now, American company Nordein Kraair has been selling a pressure cooker that raises the temperature of the water and shortens the heating time under the trademark ``Tengoo Tanker.'' Also, in Japan, Asahi Light Metal Industry sells it under the name ``Range Vitality Pot''.

As shown in FIG. 4, these pressure cookers 40 have a basic configuration in which a container body 41 made of thermosetting unsaturated polyester resin and a lid 42 are connected via a rubber gasket 43. The pressure regulating valve 44 increases the internal pressure to enable pressure cooking in a microwave oven.

By the way, the operating pressure of these pressure cookers 40 is around 2 atm for gas and electric pressure cookers that are currently popular, whereas the operating pressure for the "tender cooker" is about 1.7 atm.
The "microwave vitality pot" has a low pressure of about 1.4 atm. For this reason,
The former is mainly used for preparing meat dishes, while the latter is used exclusively for cooking rice.

On the other hand, as shown in FIGS. 5A and 5B, a non-adhesive A1 plate is used as a surface layer 51, a silicone rubber molded body is used as a lower layer support 53, and a ferrite layer 52, which is a microwave absorbing heat generating material, is interposed inside. A heat generating plate 50 made of
A receiver molded from TPX that accommodates it consists of a plate 54 and a lid 55, and a browning cooker 56 is sold by Vario ■ under the trademark "One car to the microwave."

Problems to be Solved by the Invention However, at the operating pressure of the pressure cooker described above, it is difficult to cook popular dishes such as brown rice, beans, and small fish, which are cooked in a gas-electric pressure cooker, until tender.

Despite this, the internal pressure of conventional pressure cookers for microwave ovens was not very high because they had problems with the reliability of the materials used.

The requirements for a pressure cooker for microwave ovens are uneven irradiation of microwaves, the presence of substances that induce this (especially oil), and abnormalities caused by incorrect energization of the heater in microwave ovens equipped with an oven function. In consideration of temperature rise, heat resistance of 200℃ or higher and pressure cooking conditions (1
It has a breaking strength sufficient to withstand temperatures of 20° C. and 12 atmospheres (20° C. and 12 atmospheric pressures), and stain resistance (no discoloration or decrease in breaking strength) for various foods under the above conditions.

However, because conventional pressure cooking containers use thermosetting unsaturated polyester resin, melting accidents can be avoided even when the temperature rises, but the strength is due to the difference in hardening between the inside and the surface caused by compression molding. This inevitably caused unevenness, and when a destructive test was conducted in which the internal pressure was increased rapidly, it was found to be brittle in terms of strength.

Furthermore, discoloration due to highly contaminating cooking materials (e.g. curry soy sauce, etc.) and a significant decrease in breaking strength (mainly due to hydrolysis pressure tester test 120°C)
The tensile strength retention rate was less than 50% after 71,000 hours), so it could not be used for full-scale pressure cooking.

On the other hand, in the case of a thick object to be cooked using a conventional cooking device, even if the portion in contact with the heating plate is browned, the entire object may not be finished yet. In addition, in the case of dishes that are steamed with steam in addition to browning, for example, in the case of electronic cooking, the interior of the cooker is not sufficiently sealed, resulting in a dry finish. For this reason, the food to be cooked has been limited to thin, pre-cooked items that do not require steaming.

By the way, as a result of intensive research, we have found that not only browning but also steaming can be done in a sealed container to make the food fluffy and extremely delicious. However, until now there has been no such cooking device.

The present invention was made in view of the above circumstances, and an object of the present invention is to provide a novel cooking device that can perform steam cooking and browning in addition to full-scale pressure cooking using a microwave oven.

Means to solve the problem In order to perform steam cooking in conjunction with full-scale pressure cooking,
The microwave cooker of the present invention includes a container body molded from a microwave-transparent thermoplastic resin having heat resistance and pressure resistance, and which houses a food to be cooked, and a lid body which closes an opening of the container body. a pressure regulating means provided on a part of the container body or the lid; and a food support member on which the food to be cooked can be placed within the container body with a space between it and the bottom of the container body. Become.

Furthermore, in order to brown the food, the microwave cooker of the present invention is molded from a microwave-transparent thermoplastic resin having heat resistance and pressure resistance, and includes a container body for storing the food to be cooked, and the container body. a lid that closes the opening of the container, and a pressure adjustment means provided in the container body or a part of the lid;
The object to be cooked is disposed in the container main body at a distance from the bottom of the container, and at least the portion in contact with the object to be cooked has a heating property by absorbing microwaves.

Function The microwave cooker according to the present invention is molded from a microwave-transparent thermoplastic resin that has heat resistance and pressure resistance, so the container body and lid have uniform strength inside and on the surface, and have high pressure resistance. Improved pressure cooking is possible. In addition, steam cooking can be performed by providing a food support in which food can be placed with a space between the water and the bottom of the container body. Furthermore, browning can be achieved by disposing a food to be cooked at a distance from the bottom of the container body, and providing a heat generating support whose at least a portion in contact with the food has microwave absorption exothermic properties.

EXAMPLE Hereinafter, a microwave cooker according to an example of the present invention will be described with reference to the drawings.

FIG. 1 is a cross-sectional view of a microwave cooker 1 according to an embodiment of the present invention, in which glass fiber-reinforced polyphenylene sulfide resin (hereinafter referred to as PPS) is used as a microwave-transparent thermoplastic resin having heat resistance and pressure resistance. 2 is the container body, and 3 is the lid. Reference numeral 4 denotes a pressure regulating valve provided in the center of the lid body 3 as a pressure regulating means. The pressure regulating valve 4 consists of a weight 5 and a nozzle 6 communicating with the inside of the container, which are loosely fitted together.

The container body 2 and the lid 3 are fitted together with a packing 7 made of silicone rubber.

In the above structure, the PPS resin used for container molding has heat resistance at a continuous use temperature of 220°C, pressure resistance of 5 atm or more, corrosion resistance against cooked foods (discoloration: color difference within 2, chemical resistance: especially water resistance, Pressure shoe test 120°
C/strength retention rate after 1000 hours of 70% or more). In addition, since it is a thermoplastic resin, it can be easily molded by general injection molding, and a homogeneous molded product without uneven strength on the surface and inside can be provided. Therefore, the cooking container of the present invention can sufficiently withstand pressure cooking conditions (120"C, 2 atmospheres).Although PPS resin was used in the above embodiments, the present invention is not limited to PSF, PEEK, etc. ,POB
, PAI, PES, etc. can be used.

Moreover, as shown in FIG. 2, microwave transparent resin,
For example, a food support 8 made of the same material as the pressure cooking container and capable of placing the food to be cooked at a distance from the bottom of the container main body 2 is provided inside the container main body 2, and
By pouring an appropriate amount of water 9 into the bottom of the container, steam cooking (for example, chawanmushi, shumai, meat buns, etc.) can be done. In addition,
The portion of the food support 8 on which the food is placed may be mesh-shaped.

Further, as shown in FIG. 3, a heating layer 3 is provided with a food to be cooked at a distance from the bottom of the container body 2, and has at least a portion in contact with the food that absorbs microwaves and has heating properties.
Browning can be performed by providing a heat generating support 31 having a temperature of 0. Note that if water is added under the heat generating support 31, browning can be achieved with steam heating like electrons.

Note that the portion of the heat generating support 31 on which the food to be cooked is placed may be formed into a mensch shape.

Effects of the Invention As described above, according to the microwave oven cooker of the present invention, full-fledged pressure cooking in a microwave oven, as well as steam and browning cooking, is possible, which increases the deliciousness of microwave cooking and improves the cooking quality. This has the effect of widening the range of the menu.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of a microwave cooker according to a first embodiment of the present invention, FIG. 2 is a cross-sectional view of a microwave cooker according to a second embodiment of the present invention, and FIG. 3 is a cross-sectional view of a microwave cooker according to a second embodiment of the present invention. FIG. 4 is a sectional view of a conventional pressure cooker, and FIG. 5 is a sectional view of a conventional browning cooker. 2... Container body, 3... Lid body, 4...
...Pressure regulating valve, 8...Cooked food support, 31...
...Heat-generating support.

Claims (1)

[Claims] (1) A container body molded from a microwave-transparent thermoplastic resin having heat resistance and pressure resistance and housing the food to be cooked; a lid body that closes the opening of the container body; and the container body or the lid. 1. A microwave cooking device comprising a pressure adjusting means provided on at least one side of the container body, and a food support member on which the food to be cooked can be placed at a distance from the bottom of the container body. (2) A container body molded from a microwave-transparent thermoplastic resin having heat resistance and pressure resistance and housing the food to be cooked; a lid body that closes the opening of the container body; and the container body or the lid. The food to be cooked is arranged with a space between a pressure regulating means provided on at least one side of the container body and the bottom of the container body, and at least a portion in contact with the food to be cooked has microwave absorbing heat generating properties. A microwave cooker consisting of a heat generating support.