JPS6158732B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a microwave oven having humidifying means.

As a characteristic of microwave ovens, dielectric heating generates heat even within the food to be heated, so it has the advantage of being able to cook food with good heat throughout, but it also has the problem of easily drying out the food.

In order to deal with this problem, some microwave ovens have conventionally been equipped with humidifying means. Figure 1 shows a conventional microwave oven with humidifying means, in which 1 is a magnetron, 2 is a cooling fin for the magnetron, 3 is a fan for cooling the magnetron, 4 is a heating chamber, 5 is a food, and 6 is a water supply. Tank 7 is a heater. In this case, magnetron 1 and humidifier heater 7
If both were used at the same time, the power rating would be large, and even if the magnetron 1 and heater 7 were operated alternately, the power consumption would still be large.

SUMMARY OF THE INVENTION An object of the present invention is to provide a microwave oven equipped with humidifying means that is free from the above-mentioned problems.

In order to achieve the above object, in the present invention,
We decided to use the evaporative cooling method to cool the magnetron, and use the generated water vapor to humidify food.

FIG. 2 shows an embodiment of the present invention, in which 1a is a magnetron, 4 is a heating chamber, 5 is a food product, 6a is a water supply tank, 8 is a jacket, and 9 is a porous water absorption layer. As long as the porous water absorption layer 9 has the ability to absorb water up to the upper part of the magnetron anode wall, it is better to have a thinner thickness. In order to prevent water vapor bubbles from interfering with water absorption, the thickness of the layer, the size of the pores, the material (adhesive strength with water, and especially the adhesive strength that does not drop suddenly even if it becomes slightly contaminated during use) ), etc., and is made of, for example, glass fiber, metal fiber, asbestos fiber, foamed metal, or a combination thereof.

Instead of using the present embodiment, the anode cylinder constituting the outer wall of the magnetron 1a may be configured such that a part of the height of the anode cylinder is underwater within the jacket. In particular, in cases where at least the inside of the anode cylinder is made of copper, the temperature difference between the upper and lower portions of the anode cylinder is small due to the high thermal conductivity of copper.

Note that, unlike conventional humidification, a lack of water due to the user's carelessness will immediately shorten the life of the relatively expensive magnetron in the microwave oven. , a function is provided to cut off the anode circuit or generate an alarm sound. This type of functional component has been provided in microwave ovens in the past.

As explained above, according to the present invention, the heater conventionally used in humidifiers is no longer necessary, and power consumption is reduced, compared to the case where magnetron oscillation and humidifier use were alternately performed. Benefits include shortening processing time and eliminating the need for a magnetron cooling fan.

[Brief explanation of the drawing]

FIG. 1 is a diagram of a conventional microwave oven equipped with a humidifier, and FIG. 2 is a diagram of an embodiment of the present invention. 1a... Magnetron, 4... Heating chamber, 6a...
...Water tank, 8...Cloak, 9...Porous water absorption layer.

Claims (1)

[Scope of Claims] 1. A microwave oven for dielectrically heating food placed in the heating chamber by radiating the high frequency output of the magnetron into the heating chamber, which has a built-in water storage part and an evaporation surface surrounding the anode of the magnetron, for evaporative cooling. A microwave oven characterized by being provided with a jacket and introducing steam generated within the jacket into a heating chamber. 2. The microwave oven according to claim 1, wherein the water storage portion is a heat-resistant fiber material or a thin layer of porous material that has a water absorption ability due to capillary action and is in close contact with the outer periphery of the anode of the magnetron, and a jacket is provided on the outside of this layer.