KR100794824B1 - Control unit for oven and the oven including the same - Google Patents

Abstract

A control unit for an oven and the oven including the same is provided to prevent influence of heat of the oven directly or indirectly and to improve an assembly process of a PCB by installing a main PCB at a back of a frame and an LED PCB in front of the frame. A control unit(20) for an oven and the oven including the same comprises the followings: a first assembly(40) including a frame(24), an LED PCB(28) installed in front of the frame confronting a heating plate to heat food, and a main PCB(26) installed at a back of the frame corresponding an opposite side of the heating plate; and a second assembly(50) installed in front of the first assembly, to transfer an order inputted by a user to the first assembly. A PCB including at least one LED is installed in front of the frame, and the first assembly includes a reflector(30) collecting light of the LED.

Description

Control unit for oven and the oven including the same

1 is a perspective view of a cooking appliance according to the present invention.

2 is an exploded perspective view of a control unit according to the present invention;

3 is a rear view of the reflector according to the present invention;

<Explanation of symbols for the main parts of the drawings>

2: cooktop 5: warm draw

10: oven 20: control unit

22: Glasterchich 24: Frame

25: display panel 26: main printed circuit board

28: LED printed circuit board 30: LED reflector

32: warm draw LED reflector 40: first assembly

50: second assembly

The present invention relates to a cooking appliance, and more particularly, to a control unit for controlling the operation of the cooking appliance.

The cooking apparatus is an apparatus for cooking food, which is exemplified by an oven or a hot plate. In particular, the oven provides an internal space in which a high temperature environment is created by resistance heat by electricity or heat generated by gas, and the food is placed therein so that food is cooked.

Electric ovens heat the outside and the inside of the cooking material at the same time, the cooking speed is faster than the gas oven, the thermal efficiency is also high, because the use of electricity is more stable than the gas oven is increasing its use.

In general, the cooking appliance displays various information necessary for cooking such as the type of cooking set by the user, the current temperature, the cooking time, etc. on the front panel of the cooker for various interfaces with the user. The content or type of the above information is determined by the setting of the control unit of the cooking appliance.

The control unit of the cooking appliance is provided with components that can control each part of the oven. The control unit is integrally formed with a printed circuit board (PCB) on which various circuits are formed and a frame on which the printed circuit board is installed. Therefore, the printed circuit board is composed of circuit elements having heat weak characteristics, so that the heat of the oven in a high temperature state directly or indirectly affects the printed circuit board, causing a failure.

By configuring the control unit to protrude upward from one side of the oven, the setting of the control unit so that the heat of the oven does not directly or indirectly affect the control unit has emerged as a recent technical problem.

On the other hand, in recent years, ovens are integrally used, including a warm drawer having a simple cooking function or a storage function.

In the case of applying a back lighting technology for displaying an operating state of a warm draw in such an oven, there is a problem in that manufacturing is difficult because the LED reflector and the warm draw LED printed circuit board are separately configured.

The present invention is proposed to remedy the above problem, and proposes a control unit in which the heat of the oven does not directly or indirectly affect the control unit.

In addition, a control unit that is easy to manufacture is proposed by including a warm draw light emitter on the LED printed circuit board and fastening a reflector capable of condensing the warm draw LED.

The oven control unit according to the present invention includes a frame, an LED printed circuit board provided on the front of the frame facing the heating source for heating food, and a rear surface of the frame corresponding to the opposite side of the heating source. A first assembly including a main printed circuit board; A second assembly provided on the front surface of the first assembly and receiving a user's command and transferring the received instruction to the first assembly; It includes.

In addition, the oven according to another embodiment of the present invention, the cavity in which food is accommodated; A mainframe surrounding the cavity; A cooktop installed on the mainframe; And at least a frame, an LED printed circuit board provided on the front of the frame facing the cooktop, and a main printed circuit board provided on the rear surface of the frame corresponding to the opposite side of the cooktop, for controlling the cooktop. A control unit provided at one side of the; It includes.

Hereinafter, with reference to the drawings will be described in detail a specific embodiment of the present invention. However, the spirit of the present invention is not limited to the embodiments presented, and those skilled in the art who understand the spirit of the present invention can easily suggest other embodiments falling within the scope of the same idea, It is said to be included in the range. In addition, the following embodiment will be described by taking a cooking apparatus of the type provided with an oven and a cooktop as an example.

Of course, the present invention with respect to the control unit of the cooking appliance can be applied to any type of oven regardless of the operation of these ovens.

Therefore, the control unit of the present invention can be applied to other cooking appliances while the oven, hot plate, and the like are included.

1 is a perspective view of a cooking appliance according to the present invention.

Referring to FIG. 1, the oven 10 of the present invention includes a cavity 1 in which food is placed, a door 3 opening and closing the front of the cavity 1, and an upper side of the cavity 1. A cook top 2 and a control unit 20 protruding to the rear of the cook top 2 to control the operation of the cooking appliance by the user are included.

The oven 10 has a cavity 1 formed at the bottom of the cooktop 2 to cook food by heat radiation or tropical flow, and a warm draw formed at the bottom of the cavity 1 for a simple cooking function or storage function. (5) is formed. The front door of the worm draw (5) is formed with a door handle (7) for opening and closing the worm draw (5).

The control unit 20 for controlling the operation of the cooking appliance has the appearance of a glasterch as more and more consumers deciding the durability and high quality of home appliances.

In order to enhance the touch feeling of the glass touch, a capacitive touch screen glass touch using a conductive ITO (Indium Tin Oxide) layer on the back of the glass is used.

Of particular interest in the present invention relates to the control unit 20, which will be described in detail in FIG.

2 is an exploded perspective view of the control unit of FIG. 1.

Referring to FIG. 2, the control unit 20 is composed of a glasterch 22, an LED reflector 30, an LED printed circuit board 28, a frame 24, a main printed circuit board 26, and the like from the front. have.

The glazed tooth 22 may allow a user to control an operating state of the oven with a touch of a finger. In addition, the glaster tooth 22 is coated with a display unit 23 for confirming the operation state of the oven. The glass assembly 22 and the display unit 23 will be referred to as a first assembly 50.

The touch of the glaster tooth 22 generates a small current and is transmitted to the main printed circuit board 26, which commands and controls the operation of the oven.

Corresponding to the first assembly 50, the LED reflector 30, the LED printed circuit board 28, the frame 24, and the main printed circuit board 26 are referred to as the second assembly 40.

 The main printed circuit board 26 of the second assembly 40 is housed inside the frame 24, and the LED printed circuit board 28 is seated on top of the frame 24. The main printed circuit board 26 and the LED printed circuit board 28 are fixed to the frame 24 with bolts or hookers.

A printed circuit board is a circuit board that electrically connects and fixes an electronic component. A plurality of components are densely mounted on a flat plate made of reinforced fiber glass or plastic, and circuits connecting the components are densely packed on the surface of the flat plate. It is a circuit board to fix.

The LED printed circuit board 28 is a lamp that emits light on the printed circuit board, that is, a circuit board electrically connecting the LED elements. The LED printed circuit board 28 emits the display unit 23 of the glaster tooth 22 according to the command of the main printed circuit board 26 so that the user can easily grasp the operation state of the current oven. The LED emitters formed on the LED printed circuit board 28 are very small elements that are directly bonded to the surface of the LED printed circuit board 28, and are so emitted by so-called Surface Mount Device (SMD) technology. .

The frame 24 is a plate having a predetermined height, and a predetermined space is formed inside the rear surface. The main printed circuit board 26 is accommodated inside the frame 24, and the LED printed circuit board 28 is seated on the frame 24.

The main printed circuit board 26 has a large number of electronic components having a property that is more susceptible to heat than the LED printed circuit board 28. Thus, the main printed circuit board 26 is accommodated in the frame 24 to block heat transferred from the cavity in the oven.

Apart from the main printed circuit board 26, the display panel 25 is electrically connected by an electrical lead. The main printed circuit board 26 transmits an operation signal of the oven to the display panel 25, which displays the current operating state of the oven.

In the oven, the display panel 25 is mainly used for the VFD panel having heat-resistant properties. The VFD panel is a self-luminous device that emits electrons emitted from a filament serving as a CRT electron gun at all times by controlling them on a grid electrode and an anode electrode to collide with phosphors on the anode.

The VFD has a merit of obtaining various colors of light and is widely used in a cooking apparatus that cannot use an LCD panel because it can be used in a high temperature environment.

The display panel 25 is supported by a main printed circuit board 26 accommodated in a frame and a display panel holder 29 fastened by a hooker.

The front surface of the LED printed circuit board 28 is provided with an LED reflector 30 connected to the LED printed circuit board 28 to collect the LED light. The LED reflector 30 has a function of reflecting the LED light so that the illuminance of the text is uniformly distributed and the text can be darkened.

The LED reflector 30 is connected to the LED printed circuit board 28 by a hooker to facilitate the assembly of the LED reflector 30. The LED reflector 30 is formed with a circular hole-shaped collecting hole 34 to condense the LED light.

Reference numeral 38 is also a reflector and is formed on the LED printed circuit board 28 so as to focus the LED light on the display unit 23.

On the other hand, the oven support portion 35 is formed on the side of the frame 24 to be coupled to the oven. The screw hole 37 is formed in the support part 35. In addition, a frame support 71 formed with a screw hole 73 is formed in the upper protrusion 70 for supporting the control unit 20 to be coupled to the support 35 of the frame 24. The support part 35 and the frame support part 71 correspond to each other and are fastened with a screw S.

3 is a rear view of the LED reflector according to the present invention.

The LED reflector 30 collects holes 34 in which the area of the portion in contact with the LED printed circuit board 28 increases toward the top of the reflector 30 so as to collect the LED light emitted from the LED printed circuit board 28. ) Is formed.

The number of LEDs on the light collecting hole 34 and the LED printed circuit board 28 of the LED reflector 30 may be formed differently according to the cooking state and cooking time to be displayed on the display unit 23.

The back of the LED reflector 30 is provided with a hooker 36 to facilitate coupling with the LED printed circuit board 28. The LED reflector 30 also includes a warm draw LED condensing hole 32 capable of condensing warm draw LED light of the LED printed circuit board 28.

The warm draw LED collecting hole 32 is aligned with the warm draw display of the display unit 23. The light collecting hole 34 is centered with all the LEDs of the LED printed circuit board 28 to obtain uniform illuminance of the display unit.

Hereinafter, a method of assembling the control unit 20 will be described with reference to FIGS. 1 to 3.

First, the main printed circuit board 26 is accommodated in the frame 24, and the LED printed circuit board 28 is seated on the upper side of the frame 24.

The LED printed circuit board 28 is connected to the LED printed circuit board 28 by a hooker 36 formed on the rear surface of the LED reflector 30 so as to cover the LED reflector 30 that collects the LED light.

A display panel 25 electrically connected to the main printed circuit board 26 by an electrical lead is inserted into the display panel holder 29 so that the display panel 25 may face the front side.

The first assembly 40 is manufactured by including the above steps.

Then, the second assembly 50 is manufactured by coating the display unit 23 displaying the cooking control state on the glaster tooth 22 for controlling cooking due to the change in capacitance.

The control unit 20 is assembled by coupling the light collecting hole 34 of the first assembly 40 to the center of the display unit 23 of the second assembly 50 to coincide with the center thereof.

The control unit 20 is finally assembled by assembling the glaster tooth 22, and allows the user to command and control the operation of the oven through the glaster tooth 22.

According to the control unit according to the invention, there is an effect that the heat of the oven does not directly or indirectly affect the control unit.

In addition, by attaching a plurality of printed circuit boards on both sides of the frame, it is easy to attach the printed circuit board has the effect of improving the assembly process.

 By substantially preventing heat generated in the cavity from the cavity affecting the printed circuit board, the operation of the oven can be stabilized and reliable.

In addition, the warm draw reflector is integrally formed with the LED reflector, and the LED reflector is simply fastened to the LED printed circuit board by a hooker or the like, whereby the manufacturing of the control unit is easy.

Claims (13)

A first printed circuit board including a frame, an LED printed circuit board provided on a front surface of the frame facing a heating source for heating food, and a main printed circuit board provided on a rear surface of the frame corresponding to an opposite side of the heating source. An assembly; A second assembly provided on the front surface of the first assembly and receiving a user's command and transferring the received instruction to the first assembly; Control unit of the oven comprising a. The method of claim 1, The front of the frame is mounted with a PCB including at least one LED, the first assembly is a control unit of the oven comprising a reflector for collecting the light of the LED. The method of claim 1, The second assembly is a control unit of the oven to be input by the glaster method. The method of claim 3, wherein The second assembly further comprises a glass on which at least one side is printed and a printing film for recognizing the capacitance of the user. delete The method of claim 1, The front of the frame is mounted with a PCB including at least one LED, the first assembly is a control unit of the oven comprising a reflector for collecting the light of the LED. The method of claim 2, The reflector is a control unit of the oven is fixed by the hook of the frame. A cavity in which food is accommodated; A mainframe surrounding the cavity; A cooktop installed on the mainframe; And At least a frame, an LED printed circuit board provided on the front of the frame facing the cooktop, and a main printed circuit board provided on the rear surface of the frame corresponding to the opposite side of the cooktop, and for controlling the cooktop. A control unit provided at one side; Oven containing. The method of claim 8, The control unit further comprises a capacitance recognition unit for transmitting to the printed circuit board in accordance with the user input. The method of claim 8, The front surface of the frame is mounted with a PCB including at least one LED, the first assembly is configured to include a reflector for collecting the light of the LED. The method of claim 8, The control unit is an oven for receiving the input by the glaster method. The method of claim 8, The control unit further comprises a glass on which at least one side is printed and a print film for recognizing the capacitance of the user. The method of claim 10, The reflector is fixed by a hook of the frame.

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