JPH0714721Y2 - Microwave oven heater mounting device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a device for attaching a temperature sensing part of a microwave oven with a heater.

[Prior art]

In a conventional microwave oven with a heater, a heater duct equipped with a heater and a blower fan is attached to the back plate at the rear of the cooker body.

In addition, the liquid expansion thermostat connects the capillary tube to the temperature control shaft part of the operation panel, and the sensor part 1
As shown in FIG. 4, the (temperature-sensitive portion) was fixed to the vicinity of the duct suction port 3 formed on the back plate 2 by means of mounting fittings 4, 4.

[Problems to be solved by the invention]

However, in the case of the above structure, when assembling the liquid expansion thermostat, the mounting adjustment is performed on the operation panel side in advance, and after the operation panel is mounted on the main body side,
Since it is necessary to attach the sensor unit 1 to the duct suction port 3 (when the sensor unit is attached to the duct suction port 3 first, the operation on the operation panel side is difficult), the heater 2 is attached to the back plate 2 of the cooker body. Before mounting the duct, the sensor unit 1 must be mounted as shown in FIG. 4, and the procedure of the mounting work is fixed and the division of labor cannot be performed, which is inefficient. There were many places where screws were screwed in to attach it, which reduced workability.

[Means for solving problems]

As shown in FIGS. 1 to 3, the present invention attaches a heater duct equipped with a heater and a blower fan to the back plate of the rear part of the cooker body, and locates at the duct suction port formed by punching holes formed in this back plate. In the temperature sensing part mounting device of the microwave oven with a heater provided with a liquid expansion type temperature sensing part for detecting the temperature of hot air, the liquid expansion type temperature sensing part is formed in a rod shape,
A temperature sensing part mounting body is provided which is equipped with the liquid expansion type temperature sensing part and is mounted on the heater duct. The temperature sensing part mounting body mounts the liquid expansion type temperature sensing part on a rod-shaped mounting rod, and the mounting rod. A mounting part for fixing the temperature sensitive part mounting body to the heater duct, and a handle part formed on the mounting part. The mounting of the temperature sensing part mounting body on the upper surface of the heater duct. An insertion hole for inserting the rod is formed, and the tip of the mounting rod is fitted to an abutting portion formed on the bottom surface of the heater duct to abut the back plate of the cooking appliance body. And a back plate, the front end of the mounting rod is sandwiched to form a fitting groove for positioning the liquid expansion type temperature sensing portion at the duct suction port portion.

[Action]

According to the present invention, after attaching the heater duct to the back plate of the rear part of the cooker body, the mounting rod of the temperature sensing part mounting body is inserted from the insertion hole of the heater duct, and the tip of the mounting rod is fitted to the heater duct. It fits into the groove and is sandwiched between the contact part of the heater duct and the back plate of the cooker body, and the mounting part of the temperature sensing part mounting body is fixed to the heater duct, and the temperature sensing part mounting body (liquid expansion type temperature sensing part ) Is attached in the state that it is positioned at the duct suction port of the cooker body.

〔Example〕

11 is a cooker body of a microwave oven with a heater, 12 is a back plate of the cooker body 11, and a duct suction port portion 13a having a punching hole for preventing radio wave leakage is formed in the center thereof, A duct suction port portion 13b is formed around it (a portion near the peripheral edge of the back plate 12). Reference numeral 14 denotes a heater duct attached to the rear of the back plate 12 to form a box-like shape having a substantially front opening, and a heater 15 for convection and hot air heated by the heater 15 are provided in the central portion of the rear surface of the cooker body 11 A blower fan F for blowing air inside is provided, and a rear plate 16 is attached to the rear of the fan.

Reference numeral 17 denotes a temperature-sensing part mounting body for mounting a liquid expansion type temperature-sensing part 19 having a capillary tube 18, which is formed of a metal plate, and has a fitting groove 20 for fitting the temperature-sensing part 19 therein. The mounting rod 21, a mounting portion 22 extending substantially at a right angle from the upper end of the mounting rod 21, and a grip portion 23 projecting upward from one end of the mounting portion 22 are integrally molded. The mounting part 22 is a mounting rod.
It is formed to be sufficiently wider than 21, and a mounting hole 25 for screwing the screw 24 is formed in the central portion thereof.

Reference numeral 26 is an insertion hole formed on the upper surface of the heater duct 14, and the mounting rod 21 of the temperature sensing portion mounting body 17 is inserted into the insertion hole 26. Further, an abutting portion 14a that abuts the back plate 12 of the cooker body 11 is formed on the bottom surface of the heater duct 14, and the tip of the mounting rod 21 is fitted to the abutting portion 14a and the abutting portion 14a. A fitting groove 28 for holding the tip of the mounting rod 21 with the back plate 12 of the cooker body 11 is formed.

Incidentally, 27 is an opening formed above the insertion hole 16,
The mounting portion 22 of the temperature sensing portion mounting body 17 is formed to such an extent that it can be sufficiently inserted.

The assembly operation of the present invention will be described. First, the back plate 12, the heater duct 14, and the rear plate 16 are attached to the rear of the cooker body 11 to form the outer shell of the microwave oven with a heater.

On the other hand, one end of the capillary tube 18 is connected to a temperature adjusting shaft portion of an operation panel (not shown), and the operation panel is attached to a predetermined location of the cooker body 11.

On the other hand, the temperature sensing portion 19 is fitted and fixed in the fitting groove of the mounting rod 21 of the temperature sensing portion mounting body 17, and the mounting rod 21 is inserted into the insertion hole 26 of the heater duct 14 by holding the grip portion 23. The tip of the mounting rod (21) is fitted into the fitting groove (28) of the contact portion (14a) of the heater duct (14). By doing so, the mounting rod 21 is sandwiched between the abutting portion 14a and the back plate 12 at the rear of the cooker body 11, and the liquid expansion type temperature sensitive portion 19 of the mounting rod 21 becomes the duct suction port of the back plate 12. The mounting portion 22 of the temperature sensing portion mounting body 17 abuts on the upper surface of the heater duct 14 while being fixed in the state of being located at the portion 13a.

Then, the screw 24 is screwed into the mounting hole 25 of the mounting portion 22,
The temperature-sensitive part mounting body 17 is fixed to the heater duct 14.

Incidentally, the grip portion 23 projects outward from the opening 27 (the outermost shell is covered with the cabinet), and the temperature sensing portion mounting body 17 is provided.
The temperature sensor mounting body 17
The mounting portion 22 has a function of blocking an excessive opening portion of the insertion hole 26 to prevent air leakage from the heater duct 14.

In the above structure, when the blower fan F is driven, the air in the cooker main body 11 is sucked in from the duct suction port 13a, the sucked air is heated by the heater 15 and blown out from the duct suction port 13b, and heated by this hot air. Do the cooking.

〔effect〕

Since the device for mounting the temperature-sensitive part of the microwave oven with a heater of the present invention has the above-mentioned configuration, even after the heater duct is mounted on the back plate of the rear part of the cooker body, hold the handle part of the temperature-sensitive part mounting body. The mounting part can be fixed while holding the liquid expansion type temperature sensitive part in a predetermined position in the heater duct, and the liquid expansion type temperature sensitive part can be securely attached in a predetermined position, and its workability is also installed. Inserting the rod into the insertion hole and fitting the tip of the rod into the fitting groove of the abutting part will not only make the assembly work better, but the number of fixing points will also be significantly reduced compared to the past, and the liquid Replacing the inflatable temperature sensing section can be performed very easily.

In addition, the mounting rod of the temperature-sensitive part mounting body is inserted through the insertion hole of the heater duct, and the tip of the mounting rod is fitted into the fitting groove of the heater duct so that the mounting rod is abutted on the heater duct and the cooker body. Since it is sandwiched between the back plate and the back plate, the mounting rod can be securely attached while it is positioned at the duct suction port, and the hot air from the heater and blower fan hits the entire rod-shaped liquid-expansion-type temperature sensing unit. The temperature of the hot air can be detected accurately, and since the mounting rod is fixed at both ends of the tip side and the mounting side, the mounting rod does not move to the blower fan side during transportation, and the blower fan operates. Occasionally, it is possible to reliably prevent the blower fan from hitting and damaging the liquid expansion type temperature sensing section.

[Brief description of drawings]

Fig. 1 is an exploded perspective view of a main part of a microwave oven with a heater equipped with the mounting device of the present invention, Fig. 2 is an enlarged view of a main part of the mounting device of the present invention, and Fig. 3 is a longitudinal sectional view of the main part of the mounting device of the present invention. FIG. 4 and FIG. 4 are explanatory views of the main part of a conventional mounting device. 11: Cooker body, 13a: Duct suction port, 13b: Duct outlet, 14: Heater duct, 15: Heater, F: Blower fan, 17: Temperature sensing unit mount, 19: Temperature sensing unit, 21: Mounting rod, 22: mounting part, 24: screw, 25: mounting hole, 26: insertion hole.

Claims (1)

[Scope of utility model registration request] 1. A heater duct equipped with a heater and a blower fan is attached to a back plate at the rear of the cooker main body, and the temperature of hot air is detected at a duct suction port formed by punching holes formed in the back plate. In a temperature-sensing part mounting device for a microwave oven equipped with a liquid-expansion-type temperature-sensing part, the liquid-expansion-type temperature-sensing part is formed in a rod shape, and the liquid-expansion-type temperature-sensing part is attached to the heater duct. A temperature-sensitive part mounting body to be mounted is provided, and the liquid-sensing type temperature-sensitive part is mounted on a rod-shaped mounting rod, and the temperature-sensitive part mounting body is mounted on the heater duct at the upper end of the mounting rod. An attachment portion for fixing is formed, a grip portion is formed on the attachment portion, an insertion hole for inserting the mounting rod of the temperature sensing portion attachment body is formed on the upper surface of the heater duct, and the heater duct of the heater duct is formed. The cooker body formed on the bottom The tip of the mounting rod is fitted to an abutting portion that comes into contact with the back plate, and the tip of the mounting rod is sandwiched between the contact portion and the back plate of the cooker body, and the liquid inflatable temperature sensing portion is connected to the duct. A device for mounting a temperature-sensitive part of a microwave oven with a heater, characterized in that a fitting groove to be located at a suction port is formed.