KR-102964387-B1 - ELECTRIC RANGE

KR102964387B1KR 102964387 B1KR102964387 B1KR 102964387B1KR-102964387-B1

Abstract

One embodiment of an electric range may include a heating element that heats an object by electromagnetic interaction. The heating element may include a core frame having a plurality of radially arranged channels formed on its lower surface, and a plurality of ferrite cores mounted in the channels and disposed at the bottom of the core frame. In the core frame, an air gap may be formed that is provided between a plurality of channels, is provided in a plurality of units and arranged radially, and communicates the center and edge of the core frame.

Inventors

김승학
조정현

Assignees

엘지전자 주식회사

Dates

Publication Date: 20260512
Application Date: 20201125

Claims (16)

case; A cover plate coupled to the top of the above case, on which a body to be heated is placed on the upper surface; A heating unit provided in multiple numbers, disposed at the lower part of the cover plate, and heating the body to be heated; An upper bracket provided in multiple numbers and positioned at the lower part of the heating unit to support the heating unit; and A base bracket positioned at the lower part of the upper bracket and on which a printed circuit board is mounted Includes, The heating unit above is, A core frame having a plurality of radially provided channels formed on the lower surface; and Ferrite cores provided in multiple numbers, mounted in the channel, and positioned at the bottom of the core frame Includes, In the above core frame, An air gap is formed that is provided between a plurality of the above channels, is provided in a plurality and arranged radially, and communicates the center and edge of the core frame. An open hole is formed at the edge at a position facing the air gap. Electric range.
In paragraph 1, The above channel is, A mounting groove in which the above ferrite core is mounted; and A guideline protruding from the lower surface of the core frame and forming the mounting groove Includes, The above air gap is, The guidelines are formed at the central part of the core frame, spaced apart from each other in the circumferential direction. Electric range.
In paragraph 2, In the above guidelines, a chamfer is formed in the central part of the core frame to reduce the width of the front part, and The above air gap is formed such that adjacent chamfered portions are spaced apart from each other in the circumferential direction of the core frame. Electric range.
In paragraph 2, In the above core frame, A first insertion hole is formed in the portion where the air gap is formed, into which a working coil mounted on the core frame is inserted. Electric range.
In paragraph 4, The above core frame is, A guide rail formed spirally on the upper surface to guide the working coil to be wound spirally; and A second coupling part formed to protrude from the outer circumference of the core frame, provided in plurality and each arranged radially, and coupled to a first coupling part provided on the upper bracket by a coupling mechanism. including, Electric range.
In paragraph 4, A mounting hole for mounting a temperature sensor is formed in the central part of the above-mentioned core frame, and A cable insertion hole is formed in the upper bracket above for inserting the cable of the temperature sensor, Electric range.
In paragraph 6, The upper bracket above, A second insertion hole into which the working coil introduced into the core frame is inserted, and a third insertion hole into which the working coil withdrawn from the core frame is inserted are formed. Electric range.
In Paragraph 7, The second insertion hole and the third insertion hole are formed in a portion of the upper bracket corresponding to the edge portion of the core frame, Electric range.
In paragraph 6, A sensor bracket further comprising a temperature sensor mounted thereon and a sensor bracket that is detachably mounted in the mounting hole. Electric range.
In paragraph 6, The above cable insertion hole is, A portion of the upper bracket formed on the portion corresponding to the edge portion of the core frame, Electric range.
In paragraph 4, The area of the air gap in the core frame is formed to be larger than the cross-sectional area of the first insertion hole. Electric range.
In paragraph 2, The above-mentioned open hole is, The above guidelines adjacent to each other are formed spaced apart from each other in the circumferential direction of the core frame, Electric range.
case; A cover plate coupled to the top of the above case, on which a body to be heated is placed on the upper surface; A heating unit comprising a core frame having a plurality of radially arranged channels formed on its lower surface, and disposed below the cover plate, and which heats the object to be heated; and a plurality of ferrite cores having a plurality of radially arranged channels and disposed below the core frame, which are mounted in the channels; and An upper bracket provided in multiple numbers and positioned below the heating unit to support the heating unit; Includes, In the above core frame, An air gap is formed that is provided between a plurality of the above channels, is provided in a plurality and arranged radially, and communicates the center and edge of the core frame. An open hole is formed at the edge at a position facing the air gap. Electric range.
In Paragraph 13, The above channel is, A mounting groove in which the above ferrite core is mounted; and A guideline protruding from the lower surface of the core frame and forming the mounting groove Includes, The above air gap is, At the central part of the core frame, the guidelines are formed spaced apart from each other in the circumferential direction, and In the above core frame, A first insertion hole is formed in the portion where the air gap is formed, into which a working coil mounted on the core frame is inserted. Electric range.
In Paragraph 14, A mounting hole for mounting a temperature sensor is formed in the central part of the above-mentioned core frame, and The upper bracket has a second insertion hole into which the cable of the temperature sensor is inserted, a third insertion hole into which the working coil introduced into the core frame is inserted, and a fourth insertion hole into which the working coil withdrawn from the core frame is inserted. Electric range.
In paragraph 15, In the above guidelines, a chamfer is formed in the central part of the core frame to reduce the width of the front part, and The above air gap is formed such that adjacent chamfered portions are spaced apart from each other in the circumferential direction of the core frame, and The above-mentioned open hole is, The above guidelines adjacent to each other are formed spaced apart from each other in the circumferential direction of the core frame, Electric range.

Description

Electric Range The present invention relates to an electric range, and more specifically, to an electric range using an induction heating method. The content described in this section merely provides background information regarding the present invention and does not constitute prior art. Various types of cooking appliances are used to heat food in homes and restaurants. The aforementioned cooking appliances include gas ranges that use gas and electric ranges that use electricity. Electric ranges are broadly divided into resistance heating and induction heating methods. The electric resistance method is a method of generating heat by applying an electric current to a metal resistance wire or a non-metallic heating element such as silicon carbide, and heating a workpiece (e.g., a cooking vessel such as a pot or frying pan) by radiating or conducting the generated heat. Induction heating is a method of applying high-frequency power to a coil to generate a magnetic field around the coil, and using eddy currents generated from the generated magnetic field to heat a body made of metal components. If we look at the basic heating principle of the induction heating method, when current is applied to the working coil or heating coil, heat is generated as the object to be heated undergoes induction heating, and the object to be heated is heated by the generated heat. The brackets supporting the components of an electric range are mostly plate-shaped, but such plate-shaped structures can be deformed by the load of the components or external forces. Therefore, there is a need to develop a structure that can increase the rigidity of these brackets. In addition, in an induction heating electric range, the temperature of the heating element is not as high as that of an electric resistance range, but heat can be generated due to electromagnetic interaction. Heat generated from the heating unit can be transferred to other components. In this case, if the heat generated from the heating unit is transferred to the printed circuit board and circuit elements equipped in the electric range, malfunction or damage to the electric range may occur. Therefore, there is a need to develop an electric range with a structure capable of suppressing the transfer of heat generated in the heating section to the printed circuit board and circuit elements. FIG. 1 is a perspective view showing an electric range according to one embodiment. FIG. 2 is an exploded perspective view of an electric range according to one embodiment. FIG. 3 is a perspective view showing an upper bracket and a part mounted on the upper bracket according to one embodiment. FIG. 4 is a front view of an electric range according to one embodiment. Figure 5 is a cross-sectional view of 4. FIG. 6 is a perspective view showing the electric range illustrated in FIG. 1 with some parts omitted. Figure 7 is an exploded perspective view showing some parts of the electric range in Figure 6. FIG. 8 is a perspective view showing a heating unit according to one embodiment. FIG. 9 is a plan view showing a heating unit according to one embodiment. FIG. 10 is a bottom view showing a heating unit according to one embodiment. FIG. 11 is a cross-sectional view of FIG. 9 viewed in the AA direction. The aforementioned objectives, features, and advantages are described in detail below with reference to the attached drawings, thereby enabling those skilled in the art to easily implement the technical concept of the present invention. In describing the present invention, detailed descriptions of known technologies related to the present invention are omitted if it is determined that such descriptions would unnecessarily obscure the essence of the invention. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings. In the drawings, the same reference numerals are used to indicate the same or similar components. Although terms such as "first," "second," etc., are used to describe various components, it goes without saying that these components are not limited by these terms. These terms are used merely to distinguish one component from another, and unless specifically stated otherwise, the first component may also be the second component. Throughout the specification, unless specifically stated otherwise, each component may be singular or plural. Singular expressions used in this specification include plural expressions unless the context clearly indicates otherwise. In this application, terms such as "composed of" or "comprising" should not be interpreted as necessarily including all of the various components or steps described in the specification, and should be interpreted as meaning that some of the components or steps may be omitted or additional components or steps may be included. Throughout the specification, "A and/or B" means A, B, or A and B unless specifically stated otherwise, and "C to D" means C or more