JP2005221165A - High frequency heating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To construct a door of high usability to be automatically opened in a high frequency heating device. <P>SOLUTION: This heat frequency heating device comprises a heating chamber 3 for storing food 2, the openable and closeable door 6 mounted on an opening part 4 of the heating chamber 3, a door switch 12 operated in interlocking with the opening and closing of the door 6, and a door arm 7 fixed to the door 6 at its one end, and connected with a coil spring 10 at the other end to pull the door 6 to be closely kept into contact with a front plate 5 constituting the circumference of the opening part 4 of the heating chamber 3 when the door 6 is closed. A grip switch 6c is mounted on a grip 6b of the door 6, and the door 6 is automatically opened by an opening driving means 13, when the door 6 is closed and the grip switch 6c is operated. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a door opening method for a high-frequency heating device.

  The door of the high-frequency heating device is provided to close the opening of the heating chamber. During cooking of food, the high-frequency inside the heating chamber is prevented from leaking outside, and heat and water vapor are prevented from leaking outside the heating chamber as much as possible. The structure to make is adopted.

  In addition, a finder part consisting of a metal punching hole for high-frequency leakage prevention and heat-resistant glass to protect it is provided so that the presence or absence of food and the heating status of food during heating can be observed. Is adopted.

  Therefore, the door structure becomes complicated, the door weight becomes heavy, and the door operation tends to become heavy because the door is strongly pulled in with a coil spring or the like in order to improve the close contact with the flat portion around the opening of the heating chamber. .

  In addition, there are many cases where the door opening operation is difficult to perform when holding a heated food or a heavy container containing water.

  For this reason, in order to make the user as easy to use as possible, as disclosed in Japanese Patent Application Laid-Open No. 2002-267177, the door key that fixes the door by operating the keyboard of the operation panel to electrically operate the electric device. There was a structure that opened the door and opened the door.

JP 2002-267177 A

  There are two methods for opening and closing the door of the high-frequency heating device: a vertically opened door that opens and closes by opening and closing and a horizontally opened door that opens and closes by moving left and right. The former vertical opening door increases the manufacturing cost due to the increase in the number of parts, but it can be loaded with food when it is fully opened, or it does not stop in the middle of opening and closing, so it has excellent safety (especially when the heater is heated, the door is (Effective when the temperature reaches hundreds of degrees.) Mainly used in high-end models of high-frequency heating devices.

  On the other hand, the latter laterally-opening door is adopted in a relatively low-priced zone model because the manufacturing cost is lower than that of the longitudinally-opening door. However, it often stops at a position where the door cannot be fully opened, and the movement of the door is not stable.

  In such a situation, the one shown in Patent Document 1 operates the electric device with the side-opening door described above in response to a signal from the keyboard, opens the door key of the door from the heating chamber, and opens the door. There was a problem that the user could not fully open and the user had to open the door completely.

  In addition, since the door is not stable, there are many chances of touching the hand or arm when the door is hot during heating, and there is a risk that the hot door may be touched and burned.

  In order to solve the above-mentioned problems, the present invention provides a heating chamber for storing food, an openable / closable door provided at an opening of the heating chamber, a door switch that operates in conjunction with opening / closing of the door, In the high-frequency heating apparatus comprising a door arm connected to a coil spring that attracts the door so that the door is in close contact with the front plate that forms the periphery of the opening of the heating chamber when the door is closed at the other end, A handle switch is provided on the handle of the door, and the door is automatically opened by the door opening drive means when the door is closed and the handle switch is operated.

  The door opening drive means is electrically interlocked with the door switch so that the opening drive means does not operate when the door is open.

  Further, when the door reaches a preset position by the door opening drive means, the door is opened by its own weight.

  As described above, according to the present invention, a heating chamber for storing food, an openable / closable door provided at an opening of the heating chamber, a door switch that operates in conjunction with opening / closing of the door, and one end fixed to the door In the high-frequency heating apparatus including a door arm connected to a coil spring that attracts the door so that the door is in close contact with the front plate that forms the periphery of the opening of the heating chamber when the door is closed at the other end, a handle is attached to the handle of the door. When the door is closed and the handle switch is operated, the door is automatically opened by the door opening driving means. This makes it possible to open the door with one finger even when you have a large pan or plate and your hands are full, so even when you have to open the door immediately to avoid carry-over heating in oven cooking etc. There are effects such as being able to cope.

  Also, the door opening drive means is electrically interlocked with the door switch, and when the door is open, the door opening drive means does not operate. Touching the plunger, the plunger jumps out of the front plate of the oven and pushes the hand to hurt you.

  In addition, when the door is opened to a preset position by the door opening drive means, the door is opened by its own weight, so that the door does not stop and fluctuate in the middle, so that it does not accidentally contact the door. There are effects such as. This is especially effective when the door is hot after the oven cooking.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is an external perspective view of a high-frequency heating device according to an embodiment of the present invention, and 1 is a main body. 2 is food. Reference numeral 3 denotes a heating chamber for storing the food 2. Reference numeral 4 denotes an opening through which the food 2 is taken in and out of the heating chamber 3. Reference numeral 5 denotes a front plate, which is one of the components constituting the heating chamber 3 made of a metal flat plate provided around the opening 4.

  6 is a door that can be opened and closed, and is used when the food 2 is taken in and out of the heating chamber 3, and is in close contact with the front plate 5 during the heating of the food 2. A finder 6a has a rectangular shape and is provided at a substantially central portion of the door 6. The finder 6a is provided for observing the inside of the heating chamber 3 when the door 6 is closed. A handle 6b is used when the door 6 is opened and closed. A handle switch 6c is used when the door 6 is automatically opened.

  A door arm 7 passes through a hole 5 a provided in the front plate 5, and one end is fixed to the door 6. The configuration of the other end will be described below. The door arm 7 is provided at two positions on the left and right sides of the opening 4 and supports the door 6 so that it is stable when the door 6 is fully opened.

  A cabinet 8 covers the heating chamber 3 and the components described below.

  FIG. 2 is a right side view with the cabinet 8 removed, and 9 is a roller provided so that the door arm 7 can operate smoothly. The roller 9 has another function.

  That is, when the door 6 is fully opened, the L-shaped stopper portion 7b provided on the door arm 7 on the heating chamber 3 side is received by the roller 9 and the door 6 is stably fixed.

  A coil spring 10 has one end fixed to the door arm 7 and the other end fixed to a bottom plate 11 constituting the main body 1 so that the door 6 is in close contact with the front plate 5. Therefore, the coil spring 10 pulls the door 6 to the front plate 5 surface and tightly fixes the door 6 to the front plate 5.

  In this way, the door 6 is tightly fixed to the front plate 5, so that it is possible to prevent leakage of high frequency and water vapor from the food 2 from between the door 6 and the front plate 5 during heating of the food 2 at high frequency.

  A door switch 12 is interlocked with the door arm 7 and is set to be OFF when the door 6 is opened and to be ON when the door 6 is closed.

  Reference numeral 13a denotes a plunger which is provided through the front plate 5 and is movable only in a limited section. An open motor 13b serves as a power source for the moving force of the plunger 13a. A position detection switch 13c detects the operating position of the plunger 13a. A unit constituted by these symbols 13a, 13b and 13c is referred to as door opening drive means.

  Reference numeral 14 denotes a control unit that controls the opening of the door 6 or the high-frequency output based on ON-OFF information from the door switch 12 or the handle switch 6c.

  The operation of the high-frequency heating apparatus configured as described above will be described.

  When the user stores the food 2 in the heating chamber 3 and moves the door 6 so as to lift the door 6, the stopper 7 b of the door arm 7 is disengaged from the fixed roller 9, and the coil spring fixed to the door arm 7. The door 6 closes the opening 4 and is firmly fixed to the front plate 5.

  The door switch 12 in a state where the door 6 is closely fixed to the front plate 5 is pushed by the door arm 7 and set to the ON state as shown in FIG. The ON information of the door switch 12 is transmitted to the control unit 14, and the high-frequency heating device enters a heating standby state, and the door opening drive means 13 also enters an operation standby state.

  When the user selects and sets an item necessary for heating from the operation unit (not shown) and starts the heating operation, a magnetron (not shown) that oscillates a high frequency operates according to an instruction from the control unit 14 to heat. Begins.

  The progress of the heating can be seen through the food 2 in the heating chamber 3 from the finder 6 a of the door 6. When the set temperature or time is reached, the operation of the magnetron stops and the heating ends.

  The configuration of the viewfinder 6a is not directly related to the present invention, and a detailed description thereof is omitted.

  When the heating is completed, the user presses the handle switch 6b provided on the door 6 with his hand and releases it to electrically turn it on and off, and this information is transmitted to the control unit 14.

  Upon receiving the information, the control unit 14 operates the opening motor 13b to operate the plunger 13a so as to push the door 6 that is in close contact with the front plate 5.

  The door 6 pushed by the plunger 13a starts to move away from the front plate 5. When the door 6 reaches the position set by the position detection switch 13c, the operation of the opening motor 13b stops, and the door 6 is opened by its own weight from this position. Operate. When the stopper portion 7b of the door arm 7 reaches the roller 9, the door 6 is fully opened as shown in FIG.

  The operation stop position of the position detection switch 13c is a position at which the door 6 enters the opening operation with its own weight, and therefore varies depending on the shape and weight of the door 6, the tension of the coil spring 10, and the like, and is obtained by experiments.

  Further, in the present invention, a switch for instructing automatic opening of the door 6 is provided on the handle 6b of the door 6, but it goes without saying that the same effect can be obtained by providing this switch on an operation panel (not shown). .

  In this way, the door 6 can be opened only by lightly touching the handle switch 6c provided on the handle 6b of the door 6, and can be opened with one finger even when both hands are holding a plate or the like.

It is an external appearance perspective view of the high frequency heating apparatus in one Example of this invention. It is a right view at the time of removing a cabinet in the state where the door of the high frequency heating device in one example of the present invention is half opened. It is a right view at the time of removing a cabinet in the state where the door of the high frequency heating device in one example of the present invention was sealed. It is a right view at the time of removing a cabinet in the state where the door of the high frequency heating device in one example of the present invention is fully opened.

Explanation of symbols

DESCRIPTION OF SYMBOLS 2 ... Food 3 ... Heating chamber 4 ... Opening 5 ... Front plate 6 ... Door 6b ... Handle 6c ... Handle switch 10 ... Coil spring 12 ... Door switch 13 ... ..Opening drive means

Claims (3)

  A heating chamber (3) for storing food (2), an openable / closable door (6) provided in an opening (4) of the heating chamber (3), and operating in conjunction with opening and closing of the door (6) A door switch (12), and a front plate (1) that fixes one end to the door (6) and the other end of the door (6) closes around the opening (4) of the heating chamber (3) 5) In the high-frequency heating apparatus including the door arm (7) connected to the coil spring (10) that attracts the door (6) so that the door (6) is in close contact, a handle switch (6c) is provided on the handle (6b) of the door (6). The high-frequency heating device is characterized in that the door (6) is automatically opened by the door opening drive means (13) when the door (6) is closed and the handle switch (6c) is operated.   The door opening drive means (13) is electrically interlocked with the door switch (12), and the opening drive means (13) does not operate when the door (6) is opened. High frequency heating device. 3. The high frequency heating device according to claim 1, wherein when the door (6) reaches a preset position by the door opening drive means (13), the door (6) is opened by its own weight.

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