JP-7854585-B2 - heating cooker

JP7854585B2JP 7854585 B2JP7854585 B2JP 7854585B2JP-7854585-B2

Inventors

石井健
杉岡孝伸

Assignees

パナソニックＩＰマネジメント株式会社

Dates

Publication Date: 20260507
Application Date: 20240424
Priority Date: 20140318

Claims (1)

A heating chamber is used to heat the object to be heated, and has a through hole at the top. A heating unit for heating the object to be heated, A steam outlet for supplying steam to the heating chamber, An infrared sensor for detecting the temperature of the object to be heated, A case that houses the infrared sensor and has an opening that allows the lens portion of the infrared sensor to be seen, A control unit that controls the heating unit based on the temperature detected by the infrared sensor, A cooling fan that supplies cooling air, A duct that directs the cooling air from the cooling fan to the lens portion, Equipped with, By rotating the case, it is possible to position the lens portion facing the through-hole and to position the lens portion not facing the through-hole. When the infrared sensor performs temperature detection, the lens portion is positioned to face the through-hole. During steam heating, in which the object to be heated stored in the heating chamber is heated by steam from the steam outlet, the lens portion is kept away from the through-hole, and the lens portion is cooled by the cooling air from the cooling fan guided by the duct. Heating cooker.

Description

This disclosure relates to heating appliances such as microwave ovens, and more particularly to heating appliances equipped with infrared sensors. Microwave ovens can heat food from the inside out using microwave heating, making them suitable for various applications such as reheating cooked food and thawing frozen food. Conventional microwave ovens offer not only microwave heating, but also oven heating, grill heating, and, in addition to these, steam heating. Oven heating is a cooking method that uses an internal heater and a convection heater to heat the food being cooked. Grilling, on the other hand, is a cooking method that uses a grill pan coated with a material that generates heat when exposed to microwaves. The food is cooked by the heat generated by the microwave-heated grill pan. In the field of microwave ovens, a system has been proposed that uses an infrared sensor equipped with infrared detection elements arranged in a multi-row, multi-column matrix to detect the temperature distribution on the bottom surface of the heating chamber, thereby detecting the position and temperature of food or other objects placed on the bottom surface of the heating chamber (see, for example, Patent Document 1). Japanese Patent Publication No. 2002-013743 Figure 1 is a perspective view showing the external appearance of a heating appliance according to an embodiment of the present disclosure.Figure 2 is a perspective view showing the heating appliance according to this embodiment with the grill plate inserted into the heating chamber and the door open.Figure 3 is a front view of the cooking appliance according to this embodiment, showing the grill plate inserted into the heating chamber and the door open.Figure 4 is a partially cutaway side view of the heating appliance according to this embodiment, with the door open.Figure 5 is a perspective view showing the external appearance of the infrared sensor in this embodiment.Figure 6 is a perspective view showing the direction of the infrared sensor 150 and the field of view 151 of the infrared sensor 150.Figure 7 is a partially cutaway side view of a cooking appliance, showing the infrared sensor's orientation set to a temperature detection position where its field of view covers the entire bottom surface of the heating chamber.Figure 8 is a partially cutaway front view of a cooking appliance, showing the infrared sensor's orientation set to a temperature detection position where its field of view covers the entire bottom surface of the heating chamber.Figure 9 is a partially cutaway top view of the cooking appliance showing the temperature-detectable region on the bottom surface of the heating chamber in this embodiment.Figure 10 is a front view of a cooking appliance showing the infrared sensor's direction set to a temperature detection position where the infrared sensor's field of view covers the entire grill pan.Figure 11 is a side view showing the heating appliance according to this embodiment with the main body cover removed. A heating appliance according to a first aspect of this disclosure comprises a heating chamber for housing an object to be heated, an infrared sensor provided outside the heating chamber and detecting the temperature inside the heating chamber using a plurality of infrared detection elements, and a direction setting motor for varying the direction of the infrared sensor. The system is configured such that when temperature detection is required, the infrared sensor moves to the temperature detection position, and when temperature detection is not required, the infrared sensor moves to the standby position. It further includes a cooling fan located outside the heating chamber, and a duct with a cooling air outlet at its tip that directs the cooling air from the cooling fan into the space between the heating chamber and the main body cover. The duct's cooling air outlet is positioned near the infrared sensor's installation location, and the infrared sensor remains in standby mode during heating operation after temperature detection is complete. The infrared sensor's lens is also directly cooled by the cooling air from the duct's cooling air outlet. In the second aspect of the present disclosure, in the first aspect, the direction of the infrared sensor is set such that one of the temperature detection positions includes the entire bottom surface of the heating chamber within its field of view. (Embodiment 1) The embodiments of this disclosure will be described below with reference to the drawings. In this embodiment, the side of the heating appliance 100 facing the door 300 is considered the front, and the side opposite the door 300 is considered the rear. Therefore, the left and right sides in Figure 3 refer to the left and right sides of the heating appliance 100, respectively. <1> Configuration of the Cooking Appliance First, the configuration of the cooking appliance 100 according to this embodiment will be described. Figure 1 is a perspe