JPS5836159Y2 - High frequency heating device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a high-frequency heating device, and provides a novel high-frequency heating device equipped with a heater for electric cooking in a heating chamber.

Below, this invention will be explained with reference to the illustrated embodiment. 1 includes an outer case 2 and a heating chamber 3 provided inside the outer case.
5 is a door that covers the opening of the heating chamber 3 of the main body in a manner that can be opened and closed; 6 is a W-shaped sheathed heater that is detachably installed in the upper part of the heating chamber 3; 7 is the same. A U-shaped sheathed heater is detachably installed at the bottom of the heating chamber 3, B is a heat-resistant insulating tube fitted into terminals formed at both ends of the heater 6.7, and 8 is a heat-resistant insulating tube fitted to the rear wall of the heating chamber 3 The terminal portion A of the heater 6.7 passes through the formed through hole.

Reference numeral 9 denotes a metal circular socket that is detachably attached to the wall surface of the heating chamber 3 in correspondence with this through hole, and inside this socket, the hole edge of the through hole 8 and the peripheral surface of the terminal portion A of the heater 6.7 are connected. A choke chamber 10 is formed to eliminate radio waves leaking from the gap.

11 is a through hole 1 located in the center of the choke chamber 10.
2 is a heat-resistant insulator, and 13 is a radio wave absorber made of heat-resistant ferrite rubber, which is also housed in the choke chamber 10, and has a through hole 14 formed in the center.

Reference numeral 15 denotes a through hole formed in the center of the socket 9, and 16 denotes a pair of terminal receivers provided corresponding to the through holes, which are made of insulators, etc., and are attached to the socket 9 by a metal support frame 17 in an overlapping state. It is attached.

S denotes a gap formed between the terminal receivers 16.16 when they are stacked, and 18 denotes an electric contact piece preliminarily stored in this gap. come into contact with.

Reference numeral 19 denotes a radio wave absorber made of ferrite rubber or the like, which is provided in the gap S so as to surround the contact piece 18; 20, a power supply connection lead wire connected to the contact piece 18 with a screw 21; 22;
2 is a through hole provided in the outer case 2 corresponding to the terminal receiver 16, 16, 23 is a cover fixed to the outer case so as to close this hole, and 24 is a hole inserted into the heating chamber 3 via a waveguide 25. 26 is a blower for forcing air into the heat generating part of the magnetron; 27 is a duct for guiding the forced air after cooling the magnetron 24 into the heating chamber 3;
Reference numeral 28 denotes an exhaust duct for discharging the air sent into the heating chamber 3, which communicates with the inside of the heating chamber 3 via a ventilation hole 29.

30 is an exhaust hole provided in the outer case 2 corresponding to the exhaust port of the exhaust duct 28, 31 is a turntable, and 32 is a drive plate for rotating this turntable, which is connected to the rotating shaft of a motor (not shown). ing.

33 is a heat insulating material superposed on the outer surface of the heating box 4, and 35 is a support for a food shelf (not shown) provided on a pair of opposing walls of the heating chamber 3.

As described above, the high-frequency heating device devised is equipped with heaters 6 and 7 for electric cooking in the heating chamber 3, so in addition to high-frequency cooking, the heater can be used to cook not only burnt dates but also various other dishes. It is.

Furthermore, since the heaters 6.7 are detachable, the heaters 6.7 are removable.
7 or the inside of the cooking chamber 3 is easy to clean, and since the connection to the power source of the heater is provided outside the heating chamber 3, sparks may be generated due to high frequency between the terminal 34 and the contact piece 18, etc. Malfunctions can be prevented as much as possible, and a reliable power supply state can be obtained.

In particular, in this invention, the penetration 718 of the heater 6.7
A choke chamber 10 is formed outside the heating chamber 3 in accordance with
Furthermore, a terminal receiver 16 with an electric contact piece 18 inside is provided outside the choke chamber, and a radio wave absorber 19 is provided inside the terminal receiver so as to surround the electric contact piece 18.
High frequency waves leaking from the gap between the hole edge of the heater 6.7 and the circumferential surface of the heater 6.7 can be almost eliminated by the choke chamber 10 and the radio wave absorber 13, and furthermore, the high frequency waves that could not be eliminated here are absorbed into the terminal receiver 16. Since the radio wave absorber 19 provided in the radio wave absorber 19 can eliminate the radio waves, it is possible to provide a highly safe high frequency heating device.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway perspective view of the high-frequency heating device of this invention, Fig. 2 is a partially cutaway side view, Fig. 3 is a vertical cross-sectional view of the main part, and Fig. 4 is the heater power supply. It is an exploded perspective view of a connection part. In the figure, 3 is a heating chamber, 6 and 7 are heaters, 8 is a through hole, 9 is a socket, 10 is a choke chamber, 16 is a terminal receiver, 18 is a contact piece, and 24 is a magnetron.

Claims (1)

[Scope of utility model registration request] A heater for electric cooking is provided in the heating chamber to which the high frequency waves of the magnetron are irradiated, and the terminal portion of this heater is led out through a through hole provided on the wall of the heating chamber, and a A choke chamber is formed outside the choke chamber, and a terminal holder housing an electric contact that comes into contact with the terminal of the heater is provided outside the choke chamber, and a radio wave absorber is provided inside the terminal holder to surround the electric contact. A high-frequency heating device that is housed.