JP2008175421A - Microwave oven for vacuum cooking - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a microwave oven with a sealed container composed of a tray using a decompressed and vacuum container for a bottom face in the oven, and a pressure container placed thereon while maintaining a conventional structure in the microwave oven. <P>SOLUTION: A large-sized sealed container resisting decompression and vacuum comprises: the tray conventionally installed in the oven; the pressure container with seal packing attached to the whole periphery of the bottom face so as to be sealed only by being placed on the tray; and an exhaust nozzle for exhausting by a vacuum pump. The decompressed container is constituted by connecting to the exhaust nozzle of the vacuum pump installed in the oven for exhausting to perform decompressed and vacuum cooking. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a microwave oven capable of cooking under reduced pressure and vacuum.

Japanese Patent Application Laid-Open No. Sho-59-59 has a reduced pressure structure inside the microwave oven body and is equipped with a reduced pressure pump.
This is described in Japanese Patent No. 41717 (Patent Document 1). A container provided with a sealable container for decompressing and a decompressing means is described in Japanese Patent Application Laid-Open No. 8-327068 (Patent Document 2). Japanese Patent No. 3615747 (Patent Document 3) describes cooking using a vacuum sealed container in a microwave oven.

JP 59-41717 JP-A-8-327068 Japanese Patent No. 3615747

  In order to allow cooking with reduced pressure and vacuum in a microwave oven, the microwave oven body should be a sealed container with a pressure resistant structure that can withstand vacuum, and an exhaust mechanism must be installed to maintain the oven function normally used for cooking. This is necessary, and it is necessary to switch between sealing and exhausting as well as manufacturing cost, and there is a problem that the structure becomes complicated. In addition, there are various types of pressure-resistant airtight containers, and there are various types of pressure-reduced container structures, but they are mainly structured to be decompressed and evacuated by heating and cooling, and have an exhaust port for exhausting with a vacuum pump. There was a problem that what was provided was not easily available.

  In view of the above-described problems, the present invention is a microwave oven in which a sealed container is configured by a tray that uses a decompression and vacuum container on the bottom surface of the microwave oven and a pressure vessel placed on the tray while maintaining the conventional structure inside the microwave oven. The purpose is to provide.

  As a means for solving the above-mentioned problems, the present invention is designed so that the structure of a large sealed container that can withstand reduced pressure and vacuum can be sealed by simply placing it on a tray installed in a conventional warehouse and simply placing it on the tray. A pressure-resistant container with a seal packing on the circumference is equipped with an exhaust nozzle for exhausting with a vacuum pump, and the decompression container is decompressed by connecting to the exhaust nozzle of the vacuum pump installed in the warehouse and exhausting. And vacuum cooking.

  According to the present invention, since only an exhaust nozzle for exhausting with a vacuum pump is added to the inside of the microwave oven, decompression and vacuum cooking can be performed while maintaining the conventional functions.

FIG. 1 is a perspective view of a product main body according to an embodiment of the present invention. There is a door 2 with a handle 1 on the front, and a transparent glass window 3 can be used to look inside. The door 2 can be opened horizontally by a hinge mechanism (not shown) with the lower part as a fulcrum by pulling the handle 1 forward. An operation panel 4 is disposed below the door 2, a display device 5 composed of liquid crystal with a white background is disposed at the center, and menu displays 6 are provided on both sides thereof. Since the menu display 6 is generally black on the background, it was printed on the glass window 3 in an easy-to-see color even in this state, so the type of color was limited. Since the substrate on which the light emitting element is mounted is disposed, this serves as a backlight and makes the menu display 6 clearer and easier to see, so that the types of colors can be reduced. Further, by separating the operation unit and the display unit and arranging the display unit on the glass window 3 side, the user's line of sight comes closer to the user, so that it is easy to use. Further, the operation time can be set quickly by rotating a dial 4a provided on the operation panel 4. In order to cool the substrate of the operation panel 4, the display device 5 and the menu display 6, an air inlet 7 is opened at the bottom of the door 2 and an air outlet 8 is opened below the handle 1. On the back side of the menu display 6, a magnetic stainless steel plate is affixed on both sides so that a menu plate (not shown) made of plastic magnets can be attached when using a pressure-reducing container. Manual setting with a plate is made easy. Further, by changing the menu display 6 to a liquid crystal display, the menu can be automatically switched between when the pressure-increasing / depressurizing container is used and when it is not used, and cooking can be performed automatically. In order to open and close the door 2 between the lower body portion 9 and the door 2, a gap 10 is provided in a state where the door is closed. The air inlet 7 is at the lowermost part of the door 2 and the air outlet 8 is substantially at the uppermost part of the door 2 so that air circulation by natural convection is performed well and both the air inlet 7 and the air outlet 8 are positioned on the lower side. Therefore, it is in a position where it is difficult to see directly, so the appearance is also good. A plurality of ventilation openings 12 are provided on the side surface of the outer frame 11. The ventilation ports 12 are also provided on the opposite side surface and the rear side, and the positions and the number of the openings can be freely opened as long as the water does not enter directly from the upper surface.

  FIG. 2 is related to the Example of this invention, and shows the longitudinal cross-sectional view of the pressure reduction and vacuum vessel installed in the microwave oven. In the decompression and vacuum vessel, a bottom plate 20 constituting the bottom surface portion and a seal packing 21 are attached to the entire periphery of the bottom portion to keep the bottom plate 20 and the pressure vessel 22 airtight. The pressure vessel 22 is made of a plastic molded product that can be used with microwaves or heat-resistant and pressure-resistant glass. In the case of glass, since the inside of the container can be seen, it is easy to grasp the progress of cooking. This decompression and vacuum container is composed of a bottom plate 20 and a pressure-resistant container 22 having a seal packing 21 around the entire bottom portion. The bottom plate 20 is composed of a ceramic plate or a glass plate having a mirror-finished contact surface with the seal portion. ing. If the width of the sealing surface is too narrow, the degree of adhesion decreases due to the influence of foreign matter or the like and the degree of vacuum cannot be maintained. In this embodiment, the width is 5 mm or more. In addition, a silicone rubber material having good heat resistance is used as the seal packing material.

An exhaust tube 23 for reducing pressure is connected to a side surface of the pressure vessel 22 by a warehouse inner connector 24 and a container side connector 25. Since the container-side connector 25 is heated by microwaves in a microwave oven, the container-side connector 25 is configured without using materials that can be used in microwaves and metal materials. The container-side connector 25 can be omitted by manufacturing the pressure-resistant container 22 and the exhaust tube 23 by integral molding. In addition, the container-side connector 25 is arranged in the upper surface direction as much as possible so as not to be easily affected by splash water caused by boiling of the cooking broth. The inside connector 24 remains inside the inside and needs to have a heat and corrosion resistant structure that can withstand an oven use temperature of 300 ° C., so it is made of a metal material that can withstand these, such as a sealing O-ring (not shown), etc. Parts having a low heat-resistant temperature are provided on the exhaust tube 23 side. As a result, when the pressure vessel 22 is not used, since the heat-sensitive parts are not attached by removing the exhaust tube 23, the oven can be used as it is without thermally insulating the inner connector 24. In addition, the connector of the system connected by one touch by insertion is used.

  A cooking vessel 26 that can be used in a microwave oven is housed in the pressure vessel 22. As the cooking container 22, a commercially available general-purpose product can be used as long as it can be used for a microwave oven. Also, since the weight at the time of setting increases when the decompression and the vacuum container are set, the door 2 becomes almost horizontal when the door 2 is opened to the front. It can be set in the storage smoothly by placing and sliding on slide guides 27 provided on both side surfaces in the storage. Further, since it is necessary to set the exhaust tube 23 on the inner connector 24 side after the setting, it is difficult to see the rear tube side and the inner connector 24 is attached in the lateral direction. A check valve 28 is provided on the upper surface of the pressure vessel 22. Thereby, decompression and release of the vacuum can be freely performed at any time.

  FIG. 3 is related to the Example of this invention, The front view which looked at the microwave oven main body from the upper surface is shown. The decompression and vacuum container requires a place for storing the cooking container 26 as well as its weight. In this embodiment, the upper surface of the microwave oven main body is used as a place for the container. The bottom plate 20 can be easily placed, and when the cooking broth is spilled, the rib 31 has a slope 30 that has a slightly higher front portion and a peripheral portion that is higher than that so that the boiled juice does not spill directly from the bottom plate 20. It is composed. Thereby, it can prevent that the baseplate 20 slides down carelessly and falls.

  The storage part 32 containing the stirring circulation fan drive part is located in the rear part of the microwave oven main body. The vacuum exhaust device 33 is disposed at the rear part thereof. Thereby, an evacuation apparatus can be expanded, without changing the magnitude | size of a microwave oven main body. At this time, piping can be shortened by attaching to the place where the internal connector 24 is located.

  According to the present invention, the decompression and vacuum vessel is composed of the bottom plate and the pressure vessel, so that the vacuum exhaust provided in the cabinet can be performed without changing the exhaust mechanism of the oven which is the function of the conventional microwave oven. By connecting to the internal connector, the pressure vessel can be depressurized and evacuated. Furthermore, the difference from the conventional one is that the structure of the pressure vessel is simple and easy to set. For this reason, taking in and out of the cooking container in a pressure vessel is easy.

FIG. 4 is a perspective view of a product main body according to an embodiment of the present invention. The longitudinal cross-sectional view of the pressurization / decompression container provided in the store | warehouse | chamber is based on the Example of this invention. The front view which looked at the microwave oven main body from the upper surface is based on the Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Handle 2 Door 3 Glass window 4 Operation panel 4a Dial 5 Display device 6 Menu display 7 Intake port 8 Exhaust port 9 Lower body 10 Gap 11 Outer frame 12 Ventilation port 20 Bottom plate 21 Seal packing 22 Pressure-resistant container 23 Exhaust tube 24 Inner connector 25 Container side connector 26 Cooking container 27 Slide guide 28 Check valve 30 Slope 31 Rib 32 Storage part 33 Vacuum exhaust device

Claims (3)

  In a microwave oven that has the functions of an oven and a range, has an evacuation device, and has a warehouse inner connector for evacuation on the side surface inside the cabinet, a pressure resistance with a seal packing on the bottom plate arranged in the cabinet A microwave oven comprising a container, wherein a container-side connector and a warehouse inner connector are connected by an exhaust tube to form a decompression and vacuum container.   2. The microwave oven according to claim 1, wherein a component having a low heat-resistant temperature is provided on the exhaust tube side.   The microwave oven according to claim 1 or 2, wherein a place for temporarily placing a decompression and a vacuum vessel is provided on an upper surface portion of the microwave oven.

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