JPH07153562A - Microwave oven - Google Patents

Abstract

PURPOSE:To connect a lead wire from a machine chamber and a lead wire from a heating chamber unit safely and simply to each other in constitution to connect the heating chamber unit to an upper part of the machine chamber. CONSTITUTION:A heating chamber unit 2 is connected to an upper part of a machine chamber 1. In this heating chamber unit 2, an electric part housing chamber 6 is integrally arranged on the side of a heating chamber 4. A terminal connecting member 15 and a connector 20 are arranged on a back face of the machine chamber 1. A lead wire from a magnetron use high voltage circuit arranged in the machine chamber 1 is connected to the terminal connecting member 15. A lead wire from a low voltage circuit arranged in the machine chamber 1 is connected to the connector 20. A lead wire 40 from a magnetron 37 arranged in the electric part housing chamber 6 is connected to the terminal connecting member 15, and a connector 30 connected to lead wires 29 from various electric parts arranged in the electric part housing chamber 6 is connected to the connector 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microwave oven having a structure in which a heating chamber is connected to and assembled above a machine chamber accommodating a magnetron.

[0002]

2. Description of the Related Art Conventionally, for example, in a microwave oven mounted on an aircraft, a heating chamber is connected above a machine room in which the magnetron is housed, and high frequency waves from the magnetron are introduced into the heating chamber through the bottom surface of the heating chamber. I try to radiate. Further, some microwave ovens are provided with a magnetron provided on the outer surface of the heating chamber and radiating a high frequency wave from the magnetron from above the heating chamber through a waveguide.

When assembling a microwave oven of this type, a heating chamber unit and a machine chamber in which various electric parts including a magnetron are integrated into the heating chamber are individually assembled, and then the heating chamber is provided above the machine chamber. I try to connect the units. In this case, since it is necessary to connect the lead wires from the electric parts provided in the machine room and the lead wires from the electric parts provided in the heating room unit, the heating room unit can be installed above the machine room with a crane or the like. A fixed gap is provided between the heating chamber unit and the machine chamber by hoisting or using a jig, and hands are inserted through the gap to connect the connectors of the lead wires.

[0004]

However, in the above-mentioned conventional example, since the wiring is performed by inserting the hand into the gap between the heating chamber unit and the machine room, the operator's hand is placed between them. It may be inadvertently pinched between the arm and the arm, which is extremely dangerous, and the wiring work is performed in an unstable state, so that the work efficiency is extremely low.

Further, as described above, since the heating chamber unit and the machine room are wired in the state of being separated from each other, the lead wires from the electric parts provided in the machine room and the electric part storage room are provided. It is necessary to set the lead wire from the electric component to be long. For this reason, the lead wires are entangled during the wiring work, or the lead wires are sandwiched between the heating chamber unit and the machine room, which further deteriorates the work efficiency.

The present invention has been made in view of the above circumstances, and an object thereof is to safely and efficiently perform an assembling work in a structure in which a heating chamber is connected to and assembled above a machine room accommodating a magnetron. It is to provide a microwave oven that can.

[0007]

The microwave oven of the present invention comprises:
A machine room accommodating a magnetron, a heating room unit mainly composed of a heating room connected to the upper side of the machine room and irradiated with a high frequency from the magnetron, and a lead wire from an electric part provided in the machine room. And a terminal connecting member for connecting the lead wire from the electric component provided in the heating chamber unit, and the terminal connecting member in a state in which the machine chamber and the heating chamber unit are connected. The lead wires are provided so as to be connectable from the outside.

In this case, the terminal connecting members may be provided for high voltage and low voltage, respectively.

Further, the terminal connecting member may be fixed to the housing in a state where either the lead wire from the machine room or the heating room unit is connected in advance.

Further, the terminal connecting member may be provided at a position corresponding to the wiring cover detachably provided on the housing.

[0011]

In the microwave oven according to the first aspect of the present invention, in assembling the microwave oven, first, the machine room and the heating chamber unit are individually assembled, and then the heating chamber unit is connected above the machine room. Then, the lead wire from the electric component provided in the machine room and the lead wire from the electric component provided in the heating chamber unit are connected by the terminal connecting member. At this time, since the terminal connecting member is provided so that the wiring work can be performed from the outside, the wiring work can be performed safely and efficiently.

In the case of the microwave oven according to the second aspect of the invention, since the terminal connecting member is provided for each of the high voltage and the low voltage, the wiring work can be reliably performed.

In the microwave oven according to the third aspect of the present invention, the terminal connecting member is fixed to the housing in a state in which either the lead wire from the machine room or the heating chamber unit is connected in advance, so that it is not connected. Wiring work can be completed simply by connecting the lead wire to the terminal connecting member.

In the case of the microwave oven according to the present invention, the terminal connecting member is provided at a position corresponding to the detachable wiring cover, and the lead wire is easily connected even after the machine room and the heating unit are connected. Since I was able to connect to
It becomes easier to install.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 2 shows the front of the microwave oven, and FIG. 3 shows the side of the microwave oven. 2 and 3, the microwave oven includes a heating chamber unit 2 at the upper part of the machine chamber 1.
It is assembled by connecting. The heating chamber unit 2 is configured by integrally providing an electric component storage chamber 6 having a panel 5 on the front side on the side of the heating chamber 4 opened and closed by the door 3.

4 and 5 show the inside of the machine room 1, and FIG. 4 shows the electric components attached to the bottom plate 7 of the machine room 1. In FIG. 4, three units of the magnetron high-voltage circuit 8 are mounted on the bottom plate 7. in this case,
The magnetron high-voltage circuit 8 of one unit is composed of a high-voltage transformer 9, a high-voltage capacitor 10, a high-voltage rectifier 11 and the like. Further, a low voltage circuit 14 such as a relay 12 and a noise filter 13 is mounted on the bottom plate 7.

A terminal connecting member 15 dedicated to the high voltage circuit is screwed to the rear end of the bottom plate 7. The terminal connecting member 15 has six terminals, and one unit of the high voltage circuit 8 for the magnetron is provided for each two terminals of the six terminals.
The lead wire from is connected. That is, the lead wire 16 from the high-voltage transformer 9 is connected to one of the two terminals forming a pair of the six terminals of the terminal connecting member 15, and the lead wire 17 from the high-voltage transformer 9 is connected to the other end of the high-voltage capacitor 11 from the other terminal. The lead wires 18 are connected together by tightening.

At the rear end of the bottom plate 7, an L-shaped fitting 1 is arranged in parallel with the terminal connecting member 15 for the high voltage circuit.
9 is fixed, and a mounting member 19 is fitted with a connector 20 as a terminal connecting member dedicated to a low voltage circuit.
The connector 20 includes a noise filter 13 and a relay 12
And a lead wire 21 from the primary side of the high-voltage transformer 9 or the like is connected.

FIG. 5 shows various electric components attached to the top plate 22 of the machine room 1. In FIG. 5, the top plate 22
Two units in which the magnetron 23 and the cooling fan 24 are integrated are fixed, and a duct 25 for guiding the air blown from the cooling fan 24 is fixed.

A terminal connecting member 26 dedicated to the high voltage circuit is screwed to the rear end of the top plate 22. The terminal connecting member 26 has four terminals, and the lead wire from each magnetron 23 is connected to each two terminals of these four terminals. That is, a pair of terminal connecting members 26
A pair of lead wires 27 from the magnetron 23 are connected to the terminals, respectively.

Here, the predetermined terminals of the terminal connection member 26 provided on the top plate 22 and the predetermined terminals of the terminal connection member 15 provided on the bottom plate 7 are connected through relay lead wires 28 (FIG. 4 and FIG. 5). With the above connection, each magnetron 2 provided on the top plate 22 of the machine room 1
3 can be electrically connected to a predetermined magnetron high-voltage circuit 8 provided on the bottom plate 4.

Further, in FIG. 5, a connector 30 is connected to the lead wire 29 from the cooling fan 24. On the other hand, a hole 31 is formed in the top plate 22, and the hole 31
The lead wire 32 is led out from the electric component storage chamber 6 through. A connector 33 is connected to the tip of the lead wire 32.

FIG. 1 is a perspective view of a microwave oven with an outer plate removed. In FIG. 1, the bottom plate 34 of the electrical component storage chamber 6 forms the bottom surface of the heating chamber 3, and various electrical components such as a transformer 35 and a noise filter 36 are attached to the bottom plate 34, and A display 5a and a switch 5b (see FIG.
Various electrical parts such as the reference) are attached, and the lead wires 32 led out from the machine room 1 are connected to these various electrical parts.

The heating chamber 3 in the electrical component storage chamber 6
A magnetron 37 and a cooling fan 38 are integrally mounted on the outer surface of the heating chamber 4, and the high frequency waves from the magnetron 37 are guided by a waveguide 39 provided on the upper surface of the heating chamber 4 to heat the heating chamber 3. Is radiated into the heating chamber 3 from above. In this case, the lead wire 40 from the magnetron 37 is connected to a predetermined terminal of the terminal connecting member 15 attached to the bottom plate 7 of the machine room 1 (see FIG. 4). With the above connection, the magnetron 37 provided in the electric component storage chamber 6 can be electrically connected to the predetermined magnetron high-voltage circuit 8 provided in the machine chamber 1.

On the upper surface of the heating chamber 3, the interior lamp 4 is provided.
1 is provided, and lead wires 32 from various electric parts such as the interior lamp 41 and the cooling fan 38 are led out into the machine room 1 (see FIG. 5). In this case, the connectors 30 and 33 are connected to the connector 20 provided in the machine room 1, respectively. With the above connection, various electric components provided in the electrical component storage chamber 6 can be electrically connected to the low voltage circuit 14 provided in the machine chamber 1.

As shown in FIG. 1, a window 42 is formed on the side plate forming the casing of the machine room 1, and the window 4 is formed.
The terminal connecting members 15 and 26 for exclusive use of the high voltage circuit and the connector 20 for exclusive use of the low voltage which are provided in the machine room 1 through 2 face outward, and the window portion 42 thereof is closed by the wiring cover 43. (See FIG. 6).

Next, a method of assembling the microwave oven having the above structure will be described. First, various electrical components are attached to the electrical component storage chamber 6 provided integrally with the heating chamber 3 and the panel 5 is attached.
After attaching various electric parts to the above, the lead wires are connected to assemble the heating chamber unit 2. At this time, the lead wires 32 such as the cooling fan 38 and the interior lamp 41 are led out downward from the holes in the bottom plate. Further, the lead wire 40 from the magnetron 37 provided in the electric component storage chamber 6 is led out downward from the hole of the bottom plate 34.

Further, as shown in FIGS. 4 and 5, the machine room 1
Various electric parts are attached to the bottom plate 7 and the top plate 22 and predetermined lead wires are connected to the terminal connecting members 15 and 26 and the connector 20. At this time, the relay lead wire 28 is connected to the terminal connecting member 26 provided on the top plate 22.
Then, the machine room 1 is assembled by attaching side plates to the periphery while the bottom plate 7 and the top plate 22 are opposed to each other and integrated.

Then, the heating chamber unit 2 is connected above the machine chamber 1 assembled as described above (see FIG. 1).
At this time, as shown in FIG. 1, the window 42 formed in the side plate of the machine room 1 is passed through to lead wire 40 and connector 3
0 and 33 are pulled out to the outside. Then, the relay lead wire 28 and the lead wire 4 connected to the terminal connecting member 26.
0 is soldered to a predetermined terminal of the terminal connecting member 15, and the connectors 30 and 33 are connected to the connector 20, respectively.

By the wiring work as described above, the magnetron 37 provided in the electrical component storage chamber 6 can be electrically connected to the magnetron high-voltage circuit 8 provided in the machine chamber 1 and the electrical component storage chamber can be electrically connected. Various electric components such as the cooling fan 38 and the interior lamp 41 provided in the machine 6 can be electrically connected to the low voltage circuit 14 provided in the machine room 1.

When all the wiring is completed as described above, the wiring cover 43 is attached to the window portion 42 of the side plate of the machine room 1 to assemble the microwave oven as shown in FIG. it can.

According to the microwave oven configured as described above, the machine room 1
The terminal connecting member 15 and the connector 20 are provided so that the wiring work can be performed from the outside.
By doing so, various electric components including the magnetron 37 in the electric component storage chamber 6 are electrically connected to the high voltage circuit 8 for magnetron and the low voltage circuit 14 in the machine chamber 1.
When assembling the microwave oven, the wiring work can be performed with the heating chamber unit 2 connected to the upper side of the machine chamber 1. Therefore, unlike the conventional example in which the heating chamber unit is lifted from the machine room to perform the wiring work, the wiring work can be performed safely and the work efficiency can be improved.

Further, since the lead wires connected to the terminal connecting members 15 and 26 and the connectors 20, 30 and 33 are positioned in the assembled state of the microwave oven, the lead wires are simply connected to each other by the connector. Even when the microwave oven is used in an environment where a large vibration is applied, since the lead wire is not heavily loaded, the lead wire is not broken or the case is not leaked.

Further, since the lead wires from the high voltage electric parts are connected by the terminal connecting members 15 and 26 and the lead wires from the low voltage electric parts are connected by the connectors 20, 30, 33, Wrong wiring can be prevented.

Further, when the machine room 1 is assembled, the lead wires from predetermined electric parts provided in the machine room 1 are connected to the terminal connection members 15 and 26 in advance, and the terminal connection member 2 is formed.
Since the relay lead wire 28 is connected to 6 in advance,
The wiring work can be completed only by connecting the relay lead wire 28 and the lead wire 40 from the magnetron 37 to the terminal connecting member 15.

In addition, since the terminal connecting members 15 and 26 and the connector 20 are provided at positions corresponding to the wiring cover 43, the lead wires can be easily connected even after the machine room 1 and the heat chamber unit 2 are connected. It can be connected to the terminal connecting member 15.

[0037]

As is apparent from the above description, the microwave oven of the present invention has the following effects.

According to the first aspect of the present invention, in the structure in which the heating chamber is connected and assembled above the machine room in which the magnetron is housed, the lead wire from the electric parts and the heating chamber provided in the machine room are the main components. Since the terminal connecting member for connecting the lead wire from the electric component provided in the heating chamber unit is provided so that the lead wires can be connected from the outside in the state where the machine chamber and the heating chamber unit are integrated, Assembly work can be performed safely and efficiently.

According to the second aspect of the present invention, the terminal connecting members are provided for the high voltage and the low voltage, respectively, so that the wiring work can be reliably performed.

According to the third aspect of the present invention, the terminal connecting member is fixed to the housing in a state where either the lead wire from the machine room or the heating chamber unit is connected in advance. The lead wires can be easily connected to each other by the member.

According to the fourth aspect of the present invention, the terminal connecting member is provided at a position corresponding to the wiring cover detachably provided in the housing, and even after the machine room and the heating room unit are connected to each other. Since the lead wire can be easily connected to the terminal connecting member, the mounting becomes easier.

[Brief description of drawings]

FIG. 1 is a perspective view showing an entire embodiment of the present invention with an outer plate removed.

[Fig. 2] Overall front view

[Fig. 3] Overall side view

FIG. 4 is a plan view of a bottom plate of a machine room showing a state where electric components are mounted.

FIG. 5 is a plan view of a top plate of a machine room showing a state where electric components are mounted.

FIG. 6 is a view corresponding to FIG. 1 showing a wiring cover attached.

[Explanation of symbols]

1 is a machine room, 2 is a heating chamber unit, 3 is a heating chamber, 15 is a terminal connecting member, 16, 17 and 18 are lead wires, 20 is a connector (terminal connecting member), 23 is a magnetron, 26 is a terminal connecting member, 28 is a relay lead wire, 37 is a magnetron, 40 is a lead wire, and 43 is a wiring cover.

Claims (4)

[Claims] 1. A machine room accommodating a magnetron, a heating room unit mainly composed of a heating room connected to the upper side of the machine room and irradiated with high frequency waves from the magnetron, and an electric machine provided in the machine room. A terminal connecting member that connects a lead wire from a component and a lead wire from an electric component provided in the heating chamber unit is provided, and the terminal connecting member connects the machine room and the heating chamber unit. A microwave oven, wherein the lead wires are provided so as to be connectable from the outside in a state. 2. The microwave oven according to claim 1, wherein the terminal connecting members are provided for high voltage and low voltage, respectively. 3. The microwave oven according to claim 1, wherein the terminal connecting member is fixed to the housing in a state in which either the lead wire from the machine room or the heating room unit is connected in advance. 4. The microwave oven according to claim 1, wherein the terminal connecting member is provided at a position corresponding to a wiring cover detachably provided on the housing.