JPH0132967Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an electric cooker having a heater.

In recent years, there has been a trend toward smaller products, not just electrical products, to save energy and space. Particularly in electric heating application products, miniaturization of products is progressing from the viewpoint of efficient use of heat. For this reason, the installation location of devices such as control devices made of heat-sensitive electronic components is limited and close to the heater, resulting in an environment where these devices are susceptible to adverse thermal effects.

Conventionally, in order to reduce the heat received by devices made of heat-sensitive electronic components, etc., as described above, these devices have been installed in locations where they are least likely to receive heat from heaters, resulting in poor usability. Another method is to provide ventilation holes to allow outside air to enter equipment made of heat-sensitive electronic components, but there are problems with waterproofing and space limitations, and it is not possible to provide ventilation holes in arbitrary positions. It was difficult to solve the thermal problem completely.

The present invention was made to solve the above-mentioned conventional problems, and includes a heater inside the outer frame, a board with electronic components arranged in the operation part provided on the side of the outer frame, and this board. The cover that covers the inside of the operating section is made of a resin with high thermal and electrical insulation properties, and the outer surface of the cover is coated with high gloss plating with good heat reflection or metal foil with high heat reflectance. By pasting the
The purpose of this is to effectively block the heat from the heater, suppress the temperature rise inside the cover, and protect the heat-sensitive electronic components disposed on the board.

Embodiments of the present invention will be described below with reference to the drawings. In Fig. 1, 1 is a cylindrical outer frame, 2
A bottomed cylindrical protective frame is installed inside an outer frame 1 via a heat insulating material 3, and a heater 4 is arranged at the bottom of the protective frame 2. 5 is a pot attached to the protective frame 2, and 6 is a temperature detection device provided approximately in the center of the heater 4, which is placed in contact with the bottom of the pot 5. Reference numeral 7 denotes an operating lever that operates a micro switch 8 provided at the bottom of the outer frame 1. 9 is a heater wrapped around the outer circumference of the protective frame 2;
10 is a temperature sensing element provided on the outer surface of the protective frame 2. Reference numeral 11 denotes an elliptical operating section fixed to the side surface of the outer frame 1 with screws, and 12 is a knob provided at the end of the operating lever 7, located at the lower part of the operating section 11. 13
14 is a power indicator lamp provided on the operating section 11, and 14 is a board provided on the back surface of the operating section 11.

Next, the second section regarding the configuration near the top of the operation section 11 will be explained.
This will be explained in detail with reference to the drawings. 15 is the operation unit 11
This is a claw provided on the back side of the upper part for locking the upper part of the operation part 11 into a mounting hole provided in the side surface of the outer frame 1. Reference numeral 16 denotes a claw provided approximately at the center of the operation section 11, and is used to support the lower end of the board 14.
17 and 18 are a triax and a resistor provided on the substrate 14, respectively. Reference numeral 19 denotes a cover made of a material with high thermal and electrical insulation properties, such as resin, which covers the substrate 14, and is fixed to the operation section 11 together with the substrate 14 from the back side with screws 20. Further, the outer surface of the cover 19 is coated with a highly glossy plating 21 with good heat reflection.

In the above configuration, the conductive heat transmitted from the heater 9 to the heat insulating material 3 during cooking is transmitted to the cover 19 by radiation and conduction, but the plating 21 on the surface of the cover 19 reflects the radiant heat received by the cover 19. Furthermore, since the cover 19 is made of a material with high thermal and electrical insulation properties, the conductive heat received by the cover 19 is reduced. Since the temperature rise inside the cover 19 is suppressed in this way, the heat-sensitive electronic components arranged on the board 14 can be protected.

Although the surface of the cover 19 is plated in the embodiment, a metal foil or the like having high heat reflectance may be pasted on the surface of the cover 19.

As is clear from the description of the above embodiments, according to the present invention, a heater is provided inside the outer frame, an operating section is provided on the side surface of the outer frame, a board on which electronic components are arranged is provided inside this operating section, and this A cover that covers the board from the inside of the operation section is made of resin with high heat and electrical insulation, and the outer surface of this cover is
It is coated with a high-gloss plating that has good heat reflection, or is coated with metal foil that has high heat reflectivity.
This configuration effectively blocks heat from the heater and suppresses the temperature rise inside the cover, making it possible to reliably protect heat-sensitive electronic components mounted on the board and improve reliability. can be increased.

In addition, since the cover covers live parts such as electronic components arranged on the board and patterns on the board, it can reliably protect them from non-live parts such as surrounding insulation materials and metal parts. This not only ensures safety, but also ensures insulation distance and does not require extra space.
Space saving can also be achieved.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway front view of an electric cooking device according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of an operating section of the electric cooking device. 1...Outer frame, 9...Heater, 11...Operation unit,
14... Board, 19... Cover.

Claims (1)

[Scope of utility model registration request] A heater is provided inside the outer frame, an operating section is provided on the side surface of the outer frame, a board on which electronic components are delivered is provided inside this operating section, and a cover that covers this board from the inside of the operating section is made of heat and electrical insulation. This electric cooker is made of high-quality resin, and the outer surface of the cover is coated with a highly glossy plating with good heat reflection, or is coated with metal foil with high heat reflectivity.