Heating device

Patent metadata

Field	Value
Publication number	US-12213236-B2
Application number	US-202017420564-A
Country	US
Kind code	B2
Filing date	Jan 3, 2020
Priority date	Jan 4, 2019
Publication date	Jan 28, 2025
Grant date	Jan 28, 2025

Abstract

Disclosed are a heating device ( 100 ) and a refrigerator. The heating device ( 100 ) includes a cylinder body ( 110 ), a door body ( 120 ), an electromagnetic generating module ( 161 ) and a radiating antenna ( 150 ). A heating chamber ( 111 ) having a pick-and-place opening is defined in the cylinder body ( 110 ), and the heating chamber ( 111 ) is configured to place an object to be processed. The door body ( 120 ) is disposed at the pick-and-place opening and configured to open and close the pick-and-place opening. The electromagnetic generating module ( 161 ) is configured to generate an electromagnetic wave signal. The radiating antenna ( 150 ) is disposed in the cylinder body ( 110 ) and electrically connected with the electromagnetic generating module ( 161 ) to generate electromagnetic waves of a corresponding frequency according to the electromagnetic wave signal. Since the peripheral edge of the radiating antenna ( 150 ) is formed by smooth curves, the distribution area of the electromagnetic waves in a plane parallel to the radiating antenna ( 150 ) may be increased, and the electromagnetic waves may be prevented from being too concentrated, thereby avoiding the problems of local overheating and uneven temperature of food.

First claim

The invention claimed is:

1. A heating device, comprising:
a cylinder body, in which a heating chamber having a pick-and-place opening is defined, and the heating chamber is configured to place an object to be processed;
a door body, disposed at the pick-and-place opening and configured to open and close the pick-and-place opening;
an electromagnetic generating module, configured to generate an electromagnetic wave signal; and
a radiating antenna, disposed in the cylinder body and electrically connected with the electromagnetic generating module to generate electromagnetic waves of a corresponding frequency according to the electromagnetic wave signal, wherein:
a peripheral edge of the radiating antenna is formed by smooth curves, so as to make a distribution of the electromagnetic waves in the heating chamber more uniform;
a geometric center of the radiating antenna coincides with a center of a maximum cross section of the heating chamber taken along an imaginary plane parallel to an installation plane of the radiating antenna;
a shape of the cross section of the heating chamber is rectangular or a corner-rounded rectangle;
a shape of the radiating antenna is a corner-rounded rectangle;
a length direction of the radiating antenna is parallel to a length direction of the cross section of the heating chamber; and
the radiating antenna has at least one of the following dimensional criteria: i) a length of the radiating antenna is 9/20 to 7/10 of a length of the cross section, ii) a width of the radiating antenna is 3/10 to 13/20 of a width of the cross section, and iii) a fillet of the radiating antenna is 2/7 to ½ of the width of the radiating antenna.

2. The heating device of claim 1 , wherein
a shape of the cross section of the heating chamber is a corner-rounded rectangle.

3. The heating device according to claim 1 , wherein:
the cylinder body is made of a metal; and
the radiating antenna is horizontally disposed at a height of ⅓ to ½ of the cylinder body.

4. The heating device according to claim 1 , further comprising:
an antenna housing, made of an insulating material and configured to separate an inner space of the cylinder body into the heating chamber and an electrical appliance chamber, wherein the radiating antenna is disposed in the electrical appliance chamber and is horizontally fixed on the lower surface of the antenna housing.

5. The heating device according to claim 4 , wherein:
the radiating antenna is provided with a plurality of engaging holes; and
the antenna housing is correspondingly provided with a plurality of buckles, and the plurality of buckles are configured to respectively pass through the plurality of engaging holes to be engaged with the radiating antenna, wherein:
each of the buckles is composed of two barbs disposed at an interval and in mirror symmetry; or
each of the buckles is composed of a fixing part perpendicular to the radiating antenna and having a hollow middle part, and an elastic part extending inclining to the fixing part from an inner end edge of the fixing part and toward the radiating antenna.

6. The heating device according to claim 4 , further comprising:
a signal processing and measurement and control circuit, disposed in the electrical appliance chamber, comprising:
a detection unit, connected in series between the electromagnetic generating module and the radiating antenna, and configured to detect specific parameters of an incident wave signal and a reflected wave signal passing through the detection unit;
a control unit, configured to calculate an electromagnetic wave absorption rate of the object to be processed according to the specific parameters; and
a matching unit, connected in series between the electromagnetic generating module and the radiating antenna, and configured to adjust a load impedance of the electromagnetic generating module according to the electromagnetic wave absorption rate.

7. The heating device according claim 4 , wherein the cylinder body is made of a metal and grounded.

8. The heating device according to claim 7 , further comprising:
a signal processing and measurement and control circuit, integrated on a circuit board and horizontally disposed in the electrical appliance chamber; and
a metal bracket, configured to connect the circuit board with the cylinder body, and to support the circuit board and discharge electric charges on the circuit board through the cylinder body.

9. The heating device according to claim 4 , wherein the antenna housing comprises:
a clapboard, configured to separate the heating chamber and the electrical appliance chamber;
a skirt part, fixedly connected with an inner wall of the cylinder body; and
a plurality of reinforcing ribs, configured to connect the clapboard and the skirt part, wherein the radiating antenna is horizontally fixed on the lower surface of the clapboard.

10. A heating device, comprising:
a cylinder body, in which a heating chamber having a pick-and-place opening is defined, and the heating chamber is configured to place an object to be processed;
a door body, disposed at the pick-and-place opening and configured to open and close the pick-and-place opening;
an electromagnetic generating module, configured to generate an electromagnetic wave signal; and
a radiating antenna, disposed in the cylinder body and electrically connected with the electromagnetic generating module to generate electromagnetic waves of a corresponding frequency according to the electromagnetic wave signal, wherein:
a peripheral edge of the radiating antenna is formed by smooth curves, so as to make a distribution of the electromagnetic waves in the heating chamber more uniform;
a geometric center of the radiating antenna coincides with a center of a maximum cross section of the heating chamber taken along an imaginary plane parallel to an installation plane of the radiating antenna;
a shape of the cross section of the heating chamber is rectangular or a corner-rounded rectangle;
a shape of the radiating antenna is a corner-rounded rectangle; and
a length direction of the radiating antenna is parallel to a length direction of the cross section of the heating chamber.

Assignees

• Haier Smart Home Co Ltd

Inventors

• Wang Haijuan
• Li Peng
• Zhao Kunkun

Classifications

• A23B2/82

  Thawing subsequent to freezing · CPC title

• A23B2/001

  Details of apparatus, e.g. pressure feed valves or for transport, or loading or unloading manipulation · CPC title

• H05B6/72

  Radiators or antennas · CPC title

• H05B6/688

  for thawing · CPC title

• F25D23/12

  Arrangements of compartments additional to cooling compartments; Combinations of refrigerators with other equipment, e.g. stove · CPC title