JPS60126524A - Electronic range - Google Patents

Abstract

PURPOSE:To make a unified block of each of the component parts and enable a response to be made upon various needs by a method wherein a heating chamber for heating foodstuffs and a power supply for supplying microwave to the heating chamber are separated to each other. CONSTITUTION:A main body 1 and a power supply part 5 are in a separated condition in a case that they are delivered from a factory. Under a condition in which the main body 1 and the power supply part 5 are separated to each other, it is not possible to turn ON a safety switch 90 and a starting switch and further to oscillate microwave energy from the power supply part 5. The safety switch 90 is arranged near fixing screws 91 for use in fixing a cabinet 2 of the main body 1 to a cabinet 6 for the power supply part 5, and a sufficient number of fixing screws 91 are properly arranged to fix the main body 1 to the power supply part 5. When the fixing screws 91 are fastened to make an integral assembly of the main body 1 and the power supply part 5, the switch is turned ON. With this arrangement, it is possible to make a response upon various needs under a proper combination of both of them.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a microwave oven in which a heating chamber for heating food and a power source section for supplying microwaves to the heating chamber are separated.

Composite types of microwave ovens have appeared that are equipped with various heating functions in addition to microwave heating.

We have responded to diversifying needs. In addition, operating means and heating means are diverse due to the use of microcomputers and sensors, and two-model configurations are becoming more and more common. As a result, they were forced to produce a large number of models in small quantities, resulting in the problem of not being able to fully utilize the effects of mass production.

As a solution to this kind of problem, for example, 1.
It is conceivable to separate the heating chamber and the power source section or control device as proposed in Japanese Utility Model Application No. 7934 and Japanese Utility Model Application No. 54-77171. In the heating room? Even if there is a request to develop the design such as the appearance, if it is possible to share the power supply section, it will be effective for mass production. Incidentally, in a microwave oven, the power supply unit including the microwave generation source such as a magnetron may often be separated from the heating chamber. In such cases, it makes sense to carry out thorough separation.

The purpose of the present invention is to obtain a microwave oven that can achieve mass production effects even when the number of models increases.The purpose of the present invention is to separate the heating chamber for heating food and the power supply section for supplying microwaves to the heating chamber. By making the two parts into a unit, it is possible to meet diversified needs by appropriately combining the two parts.

The aim is to provide a microwave oven that exhibits the mass production effects associated with unitization, solves the safety problems associated with separating the two, and does not pose any practical problems.

Hereinafter, one embodiment thereof will be described with reference to the accompanying drawings.

In FIG. 1, 1 is a main body with a heating chamber inside, and 2 is a cabinet constituting the outer shell. 6 is a door that seals the heating chamber so that it can be opened and closed.

4 indicates its handle. Reference numeral 5 indicates a power supply section that supplies microwaves to the heating chamber, and reference numeral 6 indicates a cabinet forming the outer shell. 7 is an operation panel;
The operating parts such as timer knob 8 are irritated. Main body 1
The power source section 5 can be separated as shown in FIG.

In FIGS. 6 to 5, 9 indicates a heating chamber.

The heating chamber 9 has a rotary tray 10 for rotating food, which is an object to be heated. Reference numeral 11 denotes a rotary table that rotatably supports the rotary tray 10, 12 a bearing portion thereof, and 13 a motor for driving the rotary table. 14 is the heating chamber 9
It is a lamp that illuminates the inside.

Reference numeral 15 indicates its support stand, and 16 indicates its window. A lighting window 16 is provided by forming a group of small holes in the heating chamber.

The area is covered with a transparent material such as glass, and the heat chamber 9 is illuminated with light emitted from the lamp.

The structure is such that water vapor emitted from the food and wind circulating inside the heating chamber 9 do not leak from that part. 17 is heating chamber 9
an opening for supplying microwave energy, 18
is a cover that closes the opening.

This cover 18 is made of a silicon laminate that has excellent transparency to microwave energy. However, the cover 18 is fixed to the heating chamber 9 with a cover (not shown). A magnetron 19 is attached to a waveguide 21 disposed within the power source section 5.

20 indicates the antenna. 22 is a waveguide provided on the main body 1 side, and the waveguide 22 communicates with the waveguide 21 and the other end communicates with the opening 17. The four-wave tube 21 is fixed to the chassis 23 of the power supply part 5 with several screws.

The waveguide 22 is fixed to the wall of the heating chamber 9 with the same mounting screws. 24 is a blower motor that cools the magnetron, and 25 indicates its mount.

26 is an air guide that guides the wind generated by the blower motor to the magnetron 19, and 27 is an air guide that guides the wind after cooling the magnetron from the power source section 5 to the main body 1 side. Reference numeral 2B denotes an air guide provided on the main body 1 side that communicates with the air guide 27, and one end of which is disposed inside the main body 1 so as to surround a group of openings 29 formed in the side wall of the heating chamber 9. . Filter 0 is a group of holes drilled in the tenth wall of the heating chamber 9 to discharge the air guided into the heating chamber 9 to the outside of the heating chamber 9, and 31 is a group of holes for discharging the air to the outside of the main body. It is a guide. 32 is a portion extending from the upper part of the main body 1, that is, the surface forming the front opening of the heating chamber 9, as shown in FIG.

This is an opening provided in a portion of the cabinet 2 or the door 6 that faces the space surrounding the earthen wall, and the air that has circulated through the heating chamber 9 is passed through the air guide 31. It is configured to be discharged to the outside of the main body 1 through an opening filter 2.弼 is a member called a bottom plate that surrounds the bottom of the heating chamber 9 of the main body 1.

The bottom plate 33 has a convex portion 64 projecting toward the power source section 5 side. Reference numeral 35 designates four parts provided at a portion of the power supply part 5 facing the convex part 34 of the cabinet B. 94 is the convex portion 6
4. The bottom plate 3 around the concave filter 5 and the bottom plate 7 are each flat part of the cabinet 6. O
- The space 36 is a gap provided between the bottom plate 63 of the main body 1 and the cabinet 6 of the power supply part 5, and as shown in FIG. 5, an opening 37 is fixed at the rear of the main body 1.2. The opening 37
It communicates with the outside through. 68 is McNetron 19
The transformer 39 that constitutes the power supply circuit is also a condenser. 40 is Sharn 2 of power supply part 5
3, and the fourteenth section through which the wind flows back into the power supply part 5 is formed.

In FIGS. 6 and 7, 41 is a latch piece attached to the door 6 in a freely closable manner, and 42 is a latch piece 4 of the latch piece 4.
It is a coil spring that applies a return force to 1. The lunch piece 41 is attached to a part 45 called the door front plate with a metal fitting 44.
6, and the range piece 41 rotates λ1 around its rotation axis 46. Reference numeral 46 is a stopper piece of the latch piece 41, and the rotation angle of the swivel/flange piece 46 is regulated by a cut-and-raised piece 47 formed by cutting and raising a part of the mounting bracket 44. The latch piece 41 is a dielectric member called a choke cover that closes the opening of the choke cavity of the door front plate 45, and the latch piece 41 protrudes toward the heating chamber through the small opening of the choke cover 48.

Further, the latch piece 41 has a substantially arc-shaped hook portion 49 that engages with a locking portion provided on the main body side.

When the door 3 is closed, the latch 49 engages with the locking part and holds the door 6 in the closed state.When the door 3 is opened, the latch piece 41 rotates when the handle 4 is pulled toward you. 49 is separated from the locking portion. 50 and 51 are locking portions that engage with the claw portions 49 of the latch pieces 41 provided on the main body 1 side. The locking parts 50 and 51 are the hook part 49
and II□1], and the locking parts 50 and 51 are pressed together by the tensile force of the coil spring 42 to close the door 5.
hold closed. The locking portion 50 is used when the power source portion 5 is not attached to the main body 1 as shown in FIG. 6, and the locking portion 51 is used when the power source portion 5 is attached to the main body 1 as shown in FIG.

Reference numeral 52 denotes a safety switch, and this safety switch 52 is arranged near the illustrated locking part 51, and when the power supply part 5 is attached to the main body 1, it is pressed by the launch piece 41 to close the contact of the safety switch 52. It looks like this. This is a locking part board forming 53 locking parts 50 and 51, and a safety switch 52 is mounted on the locking part board 56.

The locking part board 5 is designed to move when the power supply part 5 is attached to the main body 1, but since the locking part 51 and the safety switch 52 are fixed integrally, the positional relationship between the two may shift. Never.

Therefore, it is possible to adjust in advance so that the contact point of the safety switch is not turned on unless the power source portion 5 is reliably attached to the main body 1.

The locking portion base plate 56 is made of molded plastic material, and integrally therewith, moving shafts 54 and 55 extend linearly upward and downward. 56 and 57 are moving axes 54 and 55
It is a bushing that slides on each.

These bushings 56 and 57 are fixed to a bracket 58. Reference numeral 59 denotes a coil spring, which is arranged coaxially with the moving shaft 54 and generates a pressing force that pushes down the locking portion base plate 56. Reference numeral 60 denotes a stopper portion provided on a portion of the moving shaft 55, which partially enlarges the diameter of the moving shaft 55. This stopper portion 60 restricts the position to which the locking portion substrate 56 is moved downward. That is, when the power source section 5 is not attached to the main body 1, the hook portion 49 of the latch piece 41 restricts the locking portion base plate 55 to a position where it engages with the locking portion 50.

Reference numeral 61 denotes an opening provided in the bottom plate 63 of the main body 1, and this opening 61 is provided at a portion facing the moving shaft 55. 6
Reference numeral 2 denotes a plunger piece attached to the cabinet 6 of the power supply section 5 so as to face the moving shaft 55. Plunger piece 62
When the power source portion 5 is attached to the main body 1, it is inserted into the main body 1 through the entire opening 61, and the moving shaft 55 is pushed open to move the locking portion base plate 5. The length of the plunger piece 62 is:

The length is suitable for engaging the hook portion 49 of the launch piece 41 with the locking portion 51. That is, the safety switch 52
The locking portion substrate 56 is moved to a position where the contact point is closed and the oscillation of microwave energy becomes effective, and the locking portion substrate 56 is held at that position by a coil spring 59.

Here, when the power supply part 5 is attached to the main body 1 with the door 6 closed as shown in FIG. 6, the hook part 49 of the launch piece 41 is in a state of being engaged with the locking part 5Q at this time. Even in this state, the locking part 50 pushes up the latch piece 41,
Remove the scratching part 49 from the locking part 50.

The power supply part 5 can be attached to the main body 1 with the door 3 in an open state.

In FIGS. 8 and 9, reference numeral 63 denotes an operation button for a starting switch that starts energizing the power supply circuit, and is referred to as a start button. The start button 63 is attached to the operation panel 7 so as to be freely retractable.

64 is a plunger piece of the start button 66, 65 is a coil spring, 66 is a stopper piece, and 67 is a blind pin. The plunger piece 64 of the start button presses the start switch 68 when the power supply section 5 is attached to the main body 1, and serves to turn on the contact point.

The starting switch 68 is supported by a movable body 69, and the movable body 69 is rotatably mounted on a support body 70 around a rotating shaft 71. The support body 70 is the Nyano 26 of the power supply part 5.
(not shown). The movable body 69 performs 191 rotations parallel to the support body 7o, and its restoring force is provided by the coil spring 2. The coil spring 72 is attached to the movable body 69 and the support body 70 by hooking the hook portions to the upright pieces 75 and 74, respectively, which are partially cut and raised. 75 is a rod for moving the moving body 69, and this rod 75 is movably attached to the support body 7o via bushings 76 and 77. The rod 75 passes through the opening 1'' part 78 of the upright piece 73 of the movable body 69, and when the rod 75 moves to the left in the figure, the suppressing part 79
When the upright piece 76 is pressed, the starting switch 68 is rotated counterclockwise. The suppressing portion 79 is formed by flattening a portion of a rod having a circular cross section.

Reference numeral 80 denotes a member called a roller attached to the rod 75, and the roller 80 is mounted so as to rotate about a rotating shaft 81 formed by bending one end of the rod 75 at a right angle. Reference numeral 82 denotes a stopper ring that holds the starting switch 68 in the state shown in FIG. It is inserted by press fitting. 83 is the roller 80 in the cabinet 6 of the electric part 5
84 is a grunger piece provided in the bottom plate 33 of the main body 1. This plunger piece 84 has a smaller protruding height than the convex portion 34 provided on the bottom plate described above, so that even if the main body 1 is placed on the floor without being combined with the power supply section 5, the weight of the main body 1 will be reduced. It does not join the jar piece 84.

By the way, when the power source part 5 is not attached to the main body 1, as shown in FIG. It is in a position that cannot be pressed. The protrusion dimension of the plunger piece 64 is restricted by the stopper piece 66, and even if the start button 66 is pushed strongly, the starting switch cannot be turned on. Power supply part 5
is attached to the main body 1, and in the /ζ state, 1 as shown in Fig. 9.
The plunger piece 84 attached to the main body 1 is inserted into the power supply part 5 through the entire opening 86, and while rotating the roller 80, the door 5 is moved horizontally, and the plunger piece 64 of the start button 65 is inserted. Starting switch 68
It is configured so that it can be moved to a position where it can be operated.

In FIG. 10, reference numeral 85 indicates an overlapping portion provided in the waveguide 21 on the side of the power source section 5. This overlapping portion 85 protrudes from the cabinet 6 of the power supply section 5 toward the main body 1 side.

That part is inserted into the inside of the main body side waveguide 22 and serves to connect the waveguides 21 and 22. The protruding height of one overlapping portion 85 is greater than the convex portion provided on the bottom plate, and the configuration is such that the waveguides are first connected and then the two are combined. The waveguide 22 houses a flange piece 86, and this flange piece 86 is fixed to the bottom plate 33 of the main body 1 by welding. Therefore, leakage of radio waves from between the 7279 piece 86 and the bottom plate 66 will not occur. Reference numeral 87 is a flange piece of the waveguide 21, or this flange piece 87 is arranged on the outside of the cabinet B. Reference numeral 88 denotes an elastic and conductive backing material, which presses the bottom plate 63 and the flange piece 87 together to prevent radio waves from leaking from this part.

In FIG. 11, 89 is the cabinet 6 of the power supply section 5.
This opening communicates with the air guide 27 and also connects the cabinet 6 and the bottom plate 33 of the main body
The space S6V formed by and is also in communication. As shown in FIG. 6, the wind that has cooled the magnetron 19 reaches the air guide 27, but most of the wind returns to the air guide 28, and a small part of the wind passes through the opening 89 and reaches the space 36. The liquid is discharged to the outside from an opening 67 provided at the rear of the main body 1 shown in FIG. 5. 90 indicates a safety switch. The safety switch 9D is placed near the mounting screw 91 for fixing the cabinet 1-2 of the main body 1 to the cabinet A of the power supply part 5, and the safety switch 90 is actuated by the special screw 91 shown in FIG. 1
The configuration is such that microwave energy can be oscillated when the cabinet 2 on the main body 1 side is fixed to the cabinet 6 on the power source side. A sufficient number of screws 91 are provided to secure the main body 1 to the power supply section 5. On the 9th floor, cabinet 2 is the part that overlaps with power supply section 5 (Iill's cab and soto 6).

This overlap part 96 serves to mechanically connect the main body 1 and the power supply part 5, and at the same time covers the joint part 92 between the bottom plate 65 of the main body 1 and the cabinet 6 of the power supply part 5,
It also serves to improve appearance. or.

It also functions as a barrier to prevent the air that has passed into the space 66 through the small gap in the joint 92 from leaking from that part. The overlap part 93 has a smaller protruding dimension than the convex part 64 provided on the bottom plate 66, so that even if the main body 1 is placed directly on the floor, the weight of the main body 1 will not be applied to that part.

Although the present invention is constructed as described above, the seventh operation will be explained below. At the stage of shipping from the factory, the main body 1 and the power supply part 5 are in a separated state, as shown in FIG. In both cases, the main body 1 is equipped with various heating functions, and the power supply section is equipped with various operating means and heating means, depending on the needs of the customer.

The user selects the combination that best suits his needs from among various combinations. In response to user needs, the main body 1 and the electric box part 5 are separated into safety switches 52 and 90. The starting switch 68 cannot be turned on, and the power supply section 5 cannot oscillate microwave energy. Furthermore, even in an incompletely connected state, one of the switches does not turn on, and the same situation as described above occurs. What is the connection between the two?

When the power supply part 5 is placed on a horizontal table and the main body 1 is lowered vertically, first the waveguide 21 and the waveguide 22 are connected, and then the air guide 27 and the waveguide 28 are connected. The convex portion 64 of the bottom plate 36, the four 35 degrees of the cabinet A of the power supply section, the plunger piece 62, and the opening 61. The plunger piece 84 and the opening 83 are connected, and each flat part 94 is connected.

The automatic lamp part 93 of the cabinet 2 on the side of the main body 1 overlaps with the cabinet 2 on the side of the power supply part 5, and the connection is completed. Then, the mounting screw 91 is tightened to integrate the main body 1 and the power supply part 5. In such a state, all of the switch groups are turned on or capable of being turned on.

First, the safety switch 52 is pressed by the launch piece 41 when the plunger piece 62 moves the locking part board 56 to the state shown in FIG. 7 and the door 6 is closed, and the contact point is opened.
It becomes N. Further, the safety switch 90 is pressed by a screw 91 and is always in an ON state. Starting switch 68
The rod 75 is moved by the plunger piece 84 to the state shown in FIG. 9, and when the start button 66 is pressed, the plunger piece 64 moves the starting switch 6.
Now you can turn on the 8 contacts. And power supply part 5
A connector (not shown) for electrical connection between the main body 1 and the main body 1 is connected to complete the integration of the two.

In this state, when the food to be heated is placed on the rotating saucer 10 and the door 6 is closed and the start button 6 is pressed, the contacts of the safety switch 5 and the start switch 68 are turned on, and microwave energy is emitted from the magnetron 19. oscillation starts. When the start switch 68 releases the hand pressing the start button 66, its contact turns OFF, but a relay holding circuit (not shown) operates to continue oscillating the microwave energy. Microwave energy is supplied to the heating chamber 9 through the waveguides 21 and 22° opening 1'' section 17. Then, the food is heated by microwave energy while rotating together with the rotating saucer 10. As the magnetron 19 operates, the blower motor 24 starts.
Cooling air is sent to magnetron 19. magnetron 1
The cooling air of 9 is taken in from the mouth group 40 provided in the chassis 26 of the power supply section 5, and is passed through the transformer 68. It cools the condenser 69 and reaches the blower motor 24. After cooling the magnetron 19, the wind passes through the air guide 27, most of it reaches the air guide 28, circulates inside the heating chamber 9, and is heated to the holo group 60. Air guide 61. The route to the outside is followed through the opening part 62. The water vapor emitted from the food is then released to the outside. On the other hand, a part of the wind that has cooled the magnetron 19 flows back into the space 3B through the opening 89 and is discharged to the outside through the opening 37. By doing this, an effective heat insulating layer is formed between the main body 1 and the power supply part 5, and even if the heating chamber 9 is heated to a high temperature with a heater or the like, the transfer of that heat to the power supply part 5 is reduced. .

The present embodiment configured as described above has the following effects. First, in a configuration in which the main body 1 provided with a heating chamber and the power supply portion 5 that supplies microwave energy to the main body 1 are separated.

(1) Diversification by preparing the main body 1 with various heating functions and the power supply section 5 with 6 built-in various operating means and heating means. These needs can be met by combining the two, and the range of applications can be expanded.

(2) Previously, expansion of applications required production of many models in small quantities, but this can be achieved by configuring a small number of models, promoting mass production effects.

This effect is achieved.

Next is the structure that combines the two.

(3) The configuration allows both to be combined in the vertical direction, and nine combinations can be easily performed.

(4) Place the heavy power supply part 5 on the bottom side ■-
Since the small main body 1 is placed on the upper side, it can be easily combined.

(5) The combined configuration is such that the weight of one is supported by the other, that is, the weight of the main body 1 is supported by the power source part 5, and a support body that supports the weight of the main body 1 is not particularly required. Therefore, it can be constructed at low cost.

(6) The fixing means for combining the two in the vertical direction and integrating the two is a mounting screw 91 that can be tightened in the horizontal direction.
Since the weight of the main body 10 is not applied to the mounting screw 91, it is possible to easily and reliably fix the two in the combined state.

(7) The mode of fixing the combined state is to extend the cabinet 2 forming the outer shell of the two main bodies 1 to the power supply part side, and overship the extended part to the cabinet 6 of the power supply part,
This is done by using a mounting screw 91 in the overlap portion 96.

It is possible to hide the gap between the connecting parts of the two and to make it compact.

(8) If the combined state of both is fixed by the means for fixing the combined state of the two, that is, the safety switch 90 that responds to the mounting screw 91, it is safe because the microwave energy can be oscillated in the emitting part 5. A state of high sexual quality is always maintained.

(9) 1-1 when the two have not been combined. A double means (safety switch) for preventing microwave energy from oscillating from the power supply part is provided, and one means (safety switch 52) is provided on the main body 1 side, and the other means (safety switch 90) is provided on the power supply part. Since these devices are installed on each of the five sides, each of these devices works to check whether the other device is a suitable combination for merging, improving safety reliability. .

(The dual means in Section 10(9) is arranged at opposite positions centering on the connecting part of the waveguide that supplies microwave energy from the power supply part, that is, the safety switch 90 is placed near the air guide 28. , the safety switch 52 is on the door 3...
The waveguides 21 and 22 are arranged on the main body side facing the waveguide 4, and their positional relationship is almost opposite to each other centering on the connecting portion of the waveguides 21 and 22. In this positional relationship, a double means is provided. Therefore, in an unfavorable connected state in which a biased load is applied to the connecting portion of the waveguides, the operation of one of the safety switches will be hindered, thereby making it possible to force reliable merging.

As described above, according to the present invention, it is possible to provide a microwave oven that is excellent in mass production and can meet diversifying needs even if there are many two-model configurations. It is reliable because it fixes the two together, and it is safe because it activates the safety switch at the same time.It also activates the safety switch provided in the main body, so the safety switch becomes double and each other is suitable for joining. Furthermore, since both safety switches are installed in positions opposite to the waveguide, it is possible to prevent the unbalanced load from being applied to the connection part of the waveguide. If the combination is not the same, the operation of one of the safety switches will be disabled, making it possible to force a safer and more reliable combination.

[Brief explanation of drawings]

1 and 2 are perspective views of a microwave oven according to an embodiment of the present invention, in which FIG. 1 shows a state in which the main body and the electric weight part are combined, and FIG. 2 shows a state in which they are separated. Figure 6 is a sectional view of the main parts of the combined state seen from the front, Figure 4 is a sectional view of the main parts seen from the top, Figure 5 is a sectional view of the main parts seen from the side, and Figure 5 is a sectional view of the main parts seen from the side. Figures 6 and 7 are cross-sectional views of the main parts of the door that opens and closes the heating chamber. Figure 6 shows the state in which the two are not combined, and Figure 7 shows the state in which the two are combined. Figures 8 and 9 are sectional views of the main parts of the power supply section, Figure 8 shows the state of the starting switch when both are not combined, and Figure 9 shows the state of the starting switch when both are combined. Figures 8 and 9 both show the start button in its depressed state when starting, Figure 10 is a sectional view of the main part of the waveguide connection, and Figure 11 is a cross-sectional view of the main part of the waveguide connection. The figure is a sectional view of a main part of a connecting portion of an air guide. Explanation of No. 411 1...Main body, 5...Power supply part. 9... Heating chamber, 21... Waveguide on the power supply side. 22...Waveguide on the main body side, 52...Safety switch. 62... Plunger piece, 90... Safety switch. 91...Mounting screw. 96... Cabinet overlamp section. Applicant Hitachi Thermal Appliances Co., Ltd. $1 Figure Figure 2 Figure 5 Figure 8 Figure 9 Figure 10 Figure 11

Claims (1)

[Claims] A main body (1) equipped with a heating chamber (9) for storing food and a power supply part (5) for oscillating microwave energy are each provided independently.
A safety switch (G) is placed in the power supply part (5) opposite the horizontal mounting screw 0υ provided in the cap, and is closed by vertically moving the plunger piece M protruding from the power supply part (5). Each switch 62 is provided in the main body (1), and both switches (A) and 62 are provided at a position t3 opposite to the waveguide Qυ, (A), and one main body (1) is connected to the power source part (5). A microwave oven characterized in that it is possible to generate microwave energy when the two are placed and combined.