JP7294064B2 - heating cooker - Google Patents

Description

TECHNICAL FIELD The present invention relates to a heating cooker provided with a heating chamber and a heating chamber door for opening and closing the heating chamber.

Conventionally, an opening is provided on the front surface of a heating chamber, the object to be cooked is stored in the heating chamber through the opening of the heating chamber, and the opening of the heating chamber is closed with a door to cook the object. is known (see Patent Document 1, for example).

JP 2013-257073 A

The heating cooker has a heating source inside the main body, so when you cook, the temperature inside the main body rises due to the heat generated by the heating source, so the pressure inside the main body rises, and if there is an opening in the main body, the hot air will escape to the outside. try to get out In a configuration such as the cooker described in Patent Document 1, there is an opening through which the connecting member that supports the door goes in and out. The lower end is below the lower end of the opening of the heating chamber. Since the heating source of the heating chamber is generally provided on the upper and lower sides, if the lower end of the opening of the heating chamber is lower than the lower end of the opening of the heating chamber, the heating source on the lower side There was a problem that there was a high possibility that hot air with a higher temperature would come out of the main unit in the near future.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-described problems and to provide a highly safe heating cooker by suppressing hot air having a high temperature from escaping out of the main body.

A heating cooker according to the present invention includes a heating chamber provided in a main body and having an open front surface to accommodate an object to be heated, a heating chamber door closing the opening of the heating chamber, and a heated chamber accommodated in the heating chamber. An upper heating source provided above the outside of the heating chamber for heating objects, and a lower heating source provided below the outside of the heating chamber and a heating source control means for controlling heating by the heat source, The maximum height dimension of the opening is 120 mm or less, or the maximum height dimension in the heating chamber is 130 mm or less, and the connecting member that can open and close the heating chamber door is connected to the main body, and the left and right side walls of the heating chamber are connected. A heat shielding wall is provided between the outside of the chamber and the connection member with a gap between the outside of the chamber on the left and right side walls, and the heating chamber has a front plate with an opening, and the front plate is connected to the main body. A connecting member through-hole is provided through which the connecting member penetrates toward the heating chamber door side, the connecting member through-hole is opened so as to straddle the center of the opening of the heating chamber in the height direction, and the lower end of the connecting member through-hole is , is opened so as to be higher than the lower end of the opening of the heating chamber.

According to the present invention, since the lower end of the opening through which the connecting member that supports the door enters and exits is positioned above the lower end of the opening of the heating chamber, the opening is separated from the heating source of the heating chamber. , it is possible to reduce the outflow of hot air with a higher temperature.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing an example of the exterior structure of a heating cooker according to Embodiment 1; 1 is a perspective view showing an example of an external structure of kitchen furniture on which a heating cooker according to Embodiment 1 is installed; FIG. It is the schematic which shows the process which installs the heating cooker of FIG. 1 in the kitchen furniture of FIG. 1 is a perspective view showing an example of an external structure of a heating cooker installed on kitchen furniture; FIG. Fig. 5 is a perspective view showing the heating cooker of Fig. 4 with the heating chamber door opened; FIG. 5 is a top view of the heating cooker of FIG. 4; FIG. 7 is a cross-sectional view showing a UU cross section of FIG. 6; FIG. 7 is a sectional view showing a VV section of FIG. 6; FIG. 7 is a cross-sectional view showing the WW cross section of FIG. 6; 2 is a block diagram schematically showing air passages inside the heating cooker according to Embodiment 1. FIG. It is the figure which looked at the main body of the state which opened the heating chamber door from the front. Fig. 3 is an enlarged cross-sectional view showing the internal structure of the connecting portion between the heating chamber door and the main body; FIG. 12 is a sectional view showing a YY section of FIG. 11; FIG. 7 is a sectional view showing the XX section of FIG. 6; FIG. 15 is a sectional view showing a state in which the heating chamber door is opened in FIG. 14;

Embodiment 1.
A heating cooker according to Embodiment 1 will be described with reference to FIGS. 1 to 10. FIG. FIG. 1 is a perspective view showing an example of the exterior structure of a heating cooker according to Embodiment 1. FIG. FIG. 2 is a perspective view showing an example of the exterior structure of kitchen furniture 100 on which the heating cooker according to Embodiment 1 is installed. FIG. 3 is a schematic diagram showing a process of installing the heating cooker of FIG. 1 on the kitchen furniture 100 of FIG. FIG. 4 is a perspective view showing an example of the external structure of the heating cooker installed on the kitchen furniture 100. As shown in FIG. FIG. 5 is a perspective view showing the heating cooker of FIG. 4 with the heating chamber door 4 opened. 6 is a top view of the heating cooker of FIG. 4. FIG. 7 is a cross-sectional view showing a UU cross section of FIG. 6. FIG. FIG. 8 is a sectional view showing the VV section of FIG. FIG. 9 is a cross-sectional view showing the WW cross section of FIG. 10 is a block diagram schematically showing air passages inside the heating cooker according to Embodiment 1. FIG. The heating cooker according to Embodiment 1 is a built-in heating cooker used in a system kitchen or the like. In Embodiment 1, as an example of a built-in heating cooker, a built-in induction heating 1 is exemplified.

In the following drawings including FIG. 1, the dimensional relationship and shape of each component may differ from the actual ones. Further, in the drawings below, the same reference numerals are assigned to the same members or portions or the members or portions having the same functions, or the reference numerals are omitted. In principle, the front-back, left-right, or up-down positional relationship of the induction heating cooker 1, or the front-back, left-right, or up-down positional relationship of each constituent member of the induction heating cooker 1 are installed in a usable state.

An induction heating cooker 1 includes a top plate 2 , a box-shaped main body 3 on which the top plate 2 is placed, and a heating chamber door 4 provided on the front surface of the main body 3 . Note that FIG. 1 shows the induction heating cooker 1 with the handle 5 removed from the heating chamber door 4 . The induction heating cooker 1 is housed in the kitchen furniture 100 in the state shown in FIG.

In the following description, the “front surface” or “front surface” of the main body 3 refers to the outer front surface of the main body 3, and even if the surface constituting the outer shell is flat, it may have unevenness. good too. The "front" or "front" of the induction heating cooker 1, the kitchen furniture 100, or the components of the kitchen furniture 100, or other components that make up the induction heating cooker 1, for example, the "front" of the heating chamber door 4 Or the same applies to the "front". In addition, the induction heating cooker 1, the kitchen furniture 100, or the “upper surface” or “top surface”, “lower surface” or “bottom surface”, “back surface” or “rear surface” of the components of the induction heating cooker 1 or the kitchen furniture 100 , "right side" or "left side". It also defines the directions of up, down, front, back, left, and right, as indicated by the arrows in FIG.

The kitchen furniture 100 is provided with a first accommodation space 110 in which the induction heating cooker 1 is accommodated and a second accommodation space 130 in which a storage box 120 for storing kitchen tools and the like is accommodated. The storage box 120 is a slide-type container, and the front surface of the storage box 120 is provided with a handle 140 for pulling out the storage box 120 forward. In the kitchen furniture 100 , a partition plate 150 separates the first accommodation space 110 of the kitchen furniture 100 from the second accommodation space 130 of the kitchen furniture 100 . As shown in FIG. 2, the flat plate surface of the partition plate 150 extends vertically and extends in the depth direction.

The upper surface of the kitchen furniture 100 is provided with an accommodation opening 110a that allows communication between the first accommodation space 110 and the upper exterior of the kitchen furniture 100 and into which the induction heating cooker 1 is inserted. In addition, on the front surface of the kitchen furniture 100, the first accommodation space 110 and the front outside of the kitchen furniture 100 are communicated, and the front surface of the heating chamber door 4 of the induction heating cooker 1 is connected to the front outside of the kitchen furniture 100. An exposed insertion hole 110b is provided.

As shown in FIG. 3, the induction heating cooker 1 is housed in the first housing space 110 through the housing opening 110a with the heating chamber door 4 at the front. After the heating compartment door 4 is inserted through the insertion opening 110 b , the main body 3 is accommodated in the first accommodation space 110 and the top plate 2 is placed on the upper surface of the kitchen furniture 100 . The accommodation position of the main body 3 is adjusted so that the front surface of the heating chamber door 4 is at the same position as the front surface of the storage box 120 when the main body 3 is accommodated in the first accommodation space 110 . Moreover, the top plate 2 is exposed from the upper surface of the kitchen furniture 100 when the main body 3 is housed in the first housing space 110 .

The handle 5 is attached in an open state in which the rear surface of the heating chamber door 4 is separated from the main body 3 and the opening 6a of the heating chamber 6 housed inside the main body 3 communicates with the outside. For example, the handle 5 is provided with a support member that is inserted into the inside from the upper surface of the heating chamber door 4, and the supporting member is fastened from the rear surface of the heating chamber door 4 with a fastening member such as a screw. It is attached to the upper surface of 4.

A decorative panel 7 is arranged in the gap between the heating chamber door 4 and the kitchen furniture 100.例文帳に追加Since the decorative panel 7 hides the front surface of the main body 3 and the front surface of the partition plate 150 that are visible from the gap between the heating chamber door 4 and the kitchen furniture 100, the design of the induction heating cooker 1 can be improved. . The decorative panel 7 has a first panel 70 arranged in the upper gap between the heating chamber door 4 and the kitchen furniture 100 . Also, the decorative panel 7 has a second panel 72 arranged in the left and right gaps between the heating chamber door 4 and the kitchen furniture 100 .

Next, a detailed configuration of the induction heating cooker 1 will be described.

The top plate 2 has a top plate 2a and a frame 2b arranged on the outer edge of the top plate 2a. As the top plate 2a, for example, a heat-resistant glass plate is used. A plurality of circular marks 2a1, 2a2, and 2a3 are printed or the like on the upper surface of the top plate 2a to serve as guides for placing an object to be heated such as a pot or a frying pan for cooking the object.

Below the plurality of circular marks 2a1, 2a2, and 2a3 of the top plate 2a and inside the main body 3, there are a plurality of heating devices for heating an object to be heated placed on the upper surface of the top plate 2a via the top plate 2a. A coil 30 is arranged. The heating coil 30 is configured as an induction heating coil. Note that the heating coil 30 arranged below the circular mark 2a3 may be a radiant heater that heats the object to be heated with infrared radiant heat generated by the supply of commercial-frequency AC power.

An induction heating coil is an electric circuit element that uses the principle of electromagnetic induction to heat an object to be heated. In the induction heating cooker 1, when a high-frequency alternating current, for example, an alternating current of 20 to 90 kHz, is passed through the induction heating coil, magnetic lines of force are generated around the induction heating coil, and a magnetic field is generated around the induction heating coil. When a magnetic field line, which is a magnetic field, penetrates inside the conductor of an object to be heated such as a pot or a frying pan, eddy currents flow in the object to be heated so that a magnetic field is generated inside the object to prevent a change in magnetic flux. Therefore, when an alternating current is continuously passed through the induction heating coil, the object to be heated continues to generate a magnetic field that hinders the change in magnetic flux in the object to be heated according to changes in the current value of the alternating current. An eddy current flows continuously in the When an eddy current flows through an object to be heated, Joule heat is generated in the object due to the electrical resistance of the object to be heated and the eddy current flowing through the object to be heated. As described above, the induction heating coil of the induction heating cooker 1 can heat an object to be heated by utilizing the principle of electromagnetic induction.

The frame 2b is formed as a reinforcing plate, for example, by bending a metal plate. The frame 2b sandwiches and reinforces the outer edge of the top plate 2a in order to prevent damage to the outer edge of the top plate 2a. A plurality of exhaust ports 2b1 communicating with the interior of the main body 3 are formed in the rear frame 2b. The rear frame 2b is provided with exhaust port covers 2c that cover the respective exhaust ports 2b1. A punching metal or a grid-like metal member is used as the exhaust port cover 2c, and is formed so as to have air permeability and low airflow resistance. For example, the shape of the opening 2c1 of the exhaust port cover 2c can be slit-shaped, and for example, the width of the opening 2c1 of the exhaust port cover 2c can be the same as or slightly smaller than the width of the exhaust port cover 2c. . Exhaust from the induction heating cooker 1 flows out of the induction heating cooker 1 through the exhaust port cover 2c.

A plurality of cushioning materials 2d are attached to the lower surface of the frame 2b. As the cushioning material 2d, for example, heat-insulating rubber such as silicone rubber is used. The cushioning material 2 d contacts the upper surface of the kitchen furniture 100 when the top plate 2 is placed on the upper surface of the kitchen furniture 100 . By providing the cushioning material 2d, it is possible to absorb the impact when the object to be heated is placed on the top plate 2, and to suppress the breakage of the top plate 2a.

An operation panel 20 is provided in front of the marks 2a1, 2a2 and 2a3 of the top plate 2a. An integrated display section 21a, a first display section 21b, and a second display section 21c are provided on the upper side of the operation panel 20 as output interfaces. The integrated display section 21a is arranged at the rear center of the operation panel 20 . The first display portion 21b is arranged on the rear right side of the operation panel 20 . The second display portion 21 c is arranged on the rear left side of the operation panel 20 .

The main body 3 includes a display board on which an output device 31a such as a thin film transistor liquid crystal module for displaying various information about the induction heating cooker 1 is mounted on each of the integrated display section 21a, the first display section 21b, and the second display section 21c. 31 is provided. The display substrate 31 is arranged below these input interfaces.

Information about the operation of the heating coil 30 arranged below the mark 2a1 of the top plate 2a is displayed on the first display portion 21b. In addition, information regarding the operation of the heating coil 30 arranged below the mark 2a2 of the top plate 2a is displayed on the second display portion 21c. For example, the first display portion 21b displays various information such as the set time for timer cooking in the heating coil 30 arranged below the mark 2a1 on the top plate 2a, the preheating temperature, or the elapsed time. Also, in the second display section 21c, similarly to the first display section 21b, various information such as the set time of timer cooking in the heating coil 30 arranged below the mark 2a2 of the top plate 2a, the preheating temperature, or the elapsed time is displayed.

All the information about the induction heating cooker 1 other than the information displayed on the first display portion 21b and the second display portion 21c is displayed on the integrated display portion 21a. For example, the integrated display section 21a displays various information such as the set time of timer cooking in the heating coil 30 arranged below the mark 2a3 of the top plate 2a, the preheating temperature, or the elapsed time. In addition, various information such as the timer setting time for the heating operation in the heating chamber 6, the preheating temperature, or the elapsed time is displayed on the integrated display section 21a. Common information or alarms of the induction heating cooker 1 are displayed on the integrated display section 21a. For example, the integrated display section 21a displays selection information of the heating source of the induction heating cooker 1, or caution information or warning information indicating the operating state of the heating source.

In addition, function setting information of the induction heating cooker 1 such as child lock setting is displayed on the integrated display section 21a. Further, the display substrate 31 arranged below the integrated display section 21a can be configured to display various kinds of different information in a plurality of areas of the integrated display section 21a. For example, the display substrate 31 arranged below the integrated display section 21a can be divided into three areas in the left-right direction so that various information of the induction heating cooker 1 can be displayed in each area.

Between the first display section 21b and the integrated display section 21a of the operation panel 20, a first thermal power display section 22a having a plurality of transmission windows is provided as an output interface. In the first heating power display portion 22a, the heating power information of the heating coil 30 arranged below the mark 2a1 of the top plate 2a is displayed by the number of lighting of light from the transmissive window. For example, the main body 3 is provided with a circuit board having a plurality of light-emitting diodes corresponding to the number of transmission windows of the first thermal display section 22a. A plurality of light-emitting diodes on the circuit board are arranged below the transmissive window of the first thermal power indicator 22a. In addition to the transparent window for displaying thermal power, the first heating power display section 22a may be provided with a transparent window for displaying the heat retention state. This circuit board may be the same board as the display board 31, or may be a separate board.

Between the second display section 21c and the integrated display section 21a of the operation panel 20, a second thermal power display section 22b having a plurality of transmission windows is provided as an output interface. In the second heating power display portion 22b, the heating power information of the heating coil 30 arranged below the mark 2a2 of the top plate 2a is displayed by the number of lighting of light from the transmissive window. The main body 3 is provided with a circuit board having a plurality of light-emitting diodes corresponding to the number of transmission windows of the second thermal display section 22b. A plurality of light emitting diodes on the circuit board are arranged below the transmissive window of the second thermal power indicator 22b. Further, the second heating power display part 22b can be provided with a transmission window for displaying the heat retention state, in addition to the transmission window for displaying the heating power. This circuit board may be the same board as the display board 31, or may be a separate board.

Note that the first thermal power display section 22a and the second thermal power display section 22b are omitted when similar thermal power information is displayed on any of the integrated display section 21a, the first display section 21b, and the second display section 21c. can.

A first input section 23, a second input section 24, a third input section 25, and a fourth input section 26 are provided in front of the operation panel 20 as input interfaces. The main body 3 has capacitive touch sensors in a number corresponding to the total number of input buttons provided in the first input section 23, the second input section 24, the third input section 25, and the fourth input section 26. An operation board 32 is provided. The operation board 32 is arranged below these input interfaces.

The first input section 23 is provided at the front center of the operation panel 20 . In the induction heating cooker 1, the information input through the first input section 23 is reflected in the display contents of the integrated display section 21a. The first input unit 23 includes a function setting button 23a, a cooking mode selection button 23b, a first input selection button 23c1, a second input selection button 23c2, a third input selection button 23c3, an input confirm button 23d, and an input cancel button 23e. is provided.

A function setting button 23 a is provided at the left end of the first input section 23 . The function setting button 23a is used to display a function setting screen of the induction heating cooker 1 such as child lock setting on the integrated display section 21a and perform function setting.

A cooking mode selection button 23b is provided on the right side of the function setting button 23a. The cooking mode selection button 23b selects, for example, a "coordinated cooking mode" in which cooking is performed using a plurality of heat sources in the induction heating cooker 1 or various cooking modes in the heating chamber 6, and related information is displayed on the integrated display section 21a. Used for display.

A first input selection button 23c1, a second input selection button 23c2, and a third input selection button 23c3 are provided in this order on the right side of the cooking mode selection button 23b. The first input selection button 23c1, the second input selection button 23c2, and the third input selection button 23c3 each have a pair of input buttons, and are used to select information displayed on the integrated display section 21a. . For example, when the display area of the integrated display section 21a is divided into three areas in the horizontal direction, and different setting contents are displayed in each area, the first input selection button 23c1 can be used to select the settings displayed in the left area. Used to select content. Also, the second input selection button 23c2 is used to select the setting contents displayed in the central area. The third input selection button 23c3 is used to select setting contents displayed in the right area.

An input confirmation button 23d is provided on the right side of the third input selection button 23c3. The input confirmation button 23d is used when starting cooking with the heating coil 30 arranged below the mark 2a3 on the top plate 2a. Also, the input confirmation button 23d is used when starting cooking in the heating chamber 6 . The input confirmation button 23d is used to confirm the contents selected by the first input selection button 23c1, the second input selection button 23c2, or the third input selection button 23c3.

An input cancel button 23e is provided on the right side of the input confirmation button 23d. The input cancellation button 23e is used to stop cooking with the heating coil 30 arranged below the mark 2a3 on the top plate 2a. Also, the input cancel button 23e is used when the cooking in the heating chamber 6 is stopped. The input cancel button 23e is used to cancel the contents selected by the first input selection button 23c1, the second input selection button 23c2, or the third input selection button 23c3.

The second input section 24 is provided on the front left side of the operation panel 20 . In the induction heating cooker 1, information input through the second input section 24 is displayed on the first display section 21b or the first thermal power display section 22a. The second input section 24 is provided with a first cooking time selection button 24a, a first control mode selection button 24b, a first switching button 24c, and a first heating power selection button 24d.

At the left end of the second input section 24, a first cooking time selection button 24a is provided. The first cooking time selection button 24a is used to select the set time for induction heating cooking with the heating coil 30 arranged below the mark 2a1 on the top plate 2a, that is, the set time for timer cooking. The set time for timer cooking selected with the first cooking time selection button 24a is displayed on the first display section 21b.

A first control mode selection button 24b is provided on the right side of the first cooking time selection button 24a. For example, with the first control mode selection button 24b, an automatic cooking mode such as a boiling mode, a stewing mode, or a frying mode is selected as the control mode. The selected control mode is displayed on the first display section 21b.

A first switching button 24c is provided on the right side of the first control mode selection button 24b. The first switching button 24c is used to switch between starting and stopping the cooking of the heating coil 30 arranged below the mark 2a1 of the top plate 2a. The start and stop of cooking by the heating coil 30 are sequentially switched each time the first switching button 24c is pressed. The start and stop of cooking by the heating coil 30 are displayed on the first display portion 21b.

A first heating power selection button 24d is provided on the right side of the first switching button 24c. The pair of first heating power selection buttons 24d has a pair of buttons and is used to adjust the heating power of the heating coil 30 arranged below the mark 2a1 of the top plate 2a, that is, power consumption. The result of thermal power selection by the pair of first thermal power selection buttons 24d is indicated by the number of lights on the first thermal power display section 22a.

The third input section 25 is provided on the front right side of the operation panel 20 . In the induction heating cooker 1, information input through the third input section 25 is displayed on the second display section 21c or the second heating power display section 22b. The third input section 25 is provided with a second switching button 25a, a second heating power selection button 25b, a second control mode selection button 25c, and a second cooking time selection button 25d.

A second switching button 25 a is provided at the left end of the third input section 25 . The second switching button 25a is used to switch between starting and stopping the cooking of the heating coil 30 arranged below the mark 2a2 of the top plate 2a. The start and stop of cooking by the heating coil 30 are sequentially switched each time the second switching button 25a is pressed. The start and stop of cooking by the heating coil 30 are displayed on the second display section 21c.

A second heating power selection button 25b is provided on the right side of the second switching button 25a. The second heating power selection button 25b has a pair of buttons and is used to adjust the heating power of the heating coil 30 arranged below the mark 2a2 of the top plate 2a, that is, power consumption. The result of thermal power selection by the second thermal power selection button 25b is represented by the number of lights on the second thermal power display section 22b.

A second control mode selection button 25c is provided on the right side of the second thermal power selection button 25b. For example, with the second control mode selection button 25c, an automatic cooking mode such as a boiling mode, a stewing mode, or a frying mode is selected as the control mode. The selected control mode is displayed on the second display section 21c.

A second cooking time selection button 25d is provided on the right side of the second control mode selection button 25c. The second cooking time selection button 25d is used to select the set time for induction heating cooking with the heating coil 30 arranged below the mark 2a2 on the top plate 2a, that is, the set time for timer cooking. The set time for timer cooking selected by the second cooking time selection button 25d is displayed on the second display section 21c.

The fourth input section 26 is provided on the right side of the third input section 25 and is a main power button for inputting operation and stop of the induction heating cooker 1 . The operation and stoppage of the induction heating cooker 1 are sequentially switched each time the fourth input section 26 is pressed.

Above the various buttons of the first input section 23, the second input section 24, the third input section 25, and the fourth input section 26, a plurality of indicators indicating whether the input with each button is valid or invalid are provided. notification window 27 is provided. The main body 3 is provided with a circuit board having a plurality of light emitting diodes corresponding to the number of notification windows 27 . A plurality of light emitting diodes on the circuit board are respectively arranged below the notification window 27 . This circuit board may be the same board as either the display board 31 or the operation board 32, or may be a separate board.

For example, when cooking in the induction heating cooker 1 is in the execution state, the input operation at the fourth input section 26, which is the main power button, can be disabled. If the lighting of the light emitting diode through the notification window 27 indicates that the input at the fourth input section 26 is valid, the turning off of the light emitting diode can indicate that the input at the fourth input section 26 is invalid. can. Alternatively, a light-emitting diode may blink to indicate that the input at the fourth input section 26 is invalid, or it may light up in a different color than when the input is valid to indicate that the input at the fourth input section 26 is invalid. It may be shown that

A housing 50 having an open top is arranged inside the main body 3 . The housing 50 has a box 50a with an open top and a flange 50b provided on the upper edge of the box 50a. Due to the housing 50, the internal space of the main body 3 is divided into a first area 200 for accommodating electric parts and the like related to the heat treatment in the top plate 2 and a second area 200 for accommodating the electric parts and the like involved in the heat treatment in the heating chamber 6. area 300 . The first region 200 and the second region 300 communicate with a plurality of exhaust ports 2b1 provided in the frame 2b. At the front end of the lower surface of the main body 3, a liquid receiving container 8 is arranged which adheres to the rear surface of the heating chamber door 4 and the inside of the heating chamber 6 and receives water flowing downward.

The first area 200 of the main body 3 accommodates the heating coil 30, the display board 31, and the operation board 32, as well as the filter circuit board 33, the first inverter circuit board 34, and one or more first cooling fans 35. It is

A flange 50b of the housing 50 supports a part of the case to which the display substrate 31 and the operation substrate 32 are attached. The operation board 32 is arranged between the flange 50b and the top plate 2a so as to contact the lower surface of the top plate 2a. The case is partly supported by the flange 50b with a gap from the lower surface of the top plate 2a.

A box 50 a of the housing 50 accommodates the heating coil 30 , the filter circuit board 33 , the first inverter circuit board 34 , and one or more first cooling fans 35 .

The heating coil 30 is arranged above the first inverter circuit board 34 . The heating coil 30 is biased toward the top plate 2a by an elastic body such as a spring from support legs provided on the bottom surface of the box 50a.

The filter circuit board 33 removes noise in the AC power supplied from the commercial power supply and supplies it to the first inverter circuit board 34 and the like, and also prevents noise generated in the first inverter circuit board 34 and the like from flowing back to the commercial power supply. It is an electric circuit board that suppresses the The filter circuit board 33 mounts electrical components such as resistors, inductors such as choke coils, capacitors, relay circuits, and current fuses.

The first inverter circuit board 34 is an electric circuit board that converts the AC power of the commercial power supply from which noise has been removed by the filter circuit board 33 into high-frequency AC power and supplies the same to the heating coil 30 . A heat sink 36 having radiation fins 36 a is attached to the first inverter circuit board 34 . Also, the heat sink 36 is attached with a plurality of switching elements 34a that constitute a part of the inverter circuit.

The heat sink 36 is a heat radiation member that cools the heat generated in the first inverter circuit board 34 and the switching elements 34a by air passing through the heat radiation fins 36a. The heat sink 36 is made of a highly thermally conductive material such as aluminum.

The switching element 34a is a semiconductor element used for power control of the inverter circuit. The switching element 34a is formed, for example, as an insulated gate bipolar transistor. Note that the switching element 34 a may be mounted on the first inverter circuit board 34 .

The first inverter circuit board 34 is covered with a protective member 37 together with a heat sink 36 and switching elements 34a. The protection member 37 is formed of, for example, a metal thin plate or a plastic plate. The protective member 37 has openings on the left and right sides so that the airflow passing through the heat sink 36 can pass. In addition, in the induction heating cooker 1 , a plurality of first inverter circuit boards 34 can be provided in order to separately supply high-frequency power to each of the plurality of heating coils 30 .

The first cooling fan 35 is a rotating machine that draws air passing through a vent 50a1 provided in the bottom surface of the box 50a into the box 50a. As the first cooling fan 35, for example, a centrifugal fan such as a sirocco fan is used. As the first cooling fan 35 rotates, the air that has passed through the air vent 50a1 is blown out along the bottom surface of the box 50a. A plurality of first cooling fans 35 can be provided according to the functions of the induction heating cooker 1 and the like.

The air vent 50a1 is formed, for example, by punching holes in the bottom surface of the box 50a. Further, as an intake port for the air flow passing through the air vent 50a1, for example, a first intake port 3a1 can be provided on the left surface of the main body 3. As shown in FIG. The first intake port 3a1 is also formed by punching a hole in the left surface of the main body 3, for example, like the vent port 50a1. Further, as shown in FIG. 9, by providing a first air intake duct 38 that communicates the first air intake port 3a1 and the air vent 50a1 inside the main body 3, the rotation of the first cooling fan 35 causes the first air intake port 3a to open. Only the air outside the main body 3 sucked from 3a1 can be drawn into the box 50a.

The air flow in the first region 200 of the main body 3 when the heating coil 30 of the induction heating cooker 1 is driven will be described with reference to FIGS. 9 and 10. FIG. In FIG. 9, airflow is indicated by block arrows. Further, the solid-line arrows in FIG. 10 indicate the main stream of air, and the dotted-line arrows indicate tributaries with a lower flow rate than the main stream. Also, a case where two first cooling fans 35 are provided in the induction heating cooker 1 will be described.

Due to the rotation of the first cooling fan 35, the air sucked from the first air intake port 3a1 is guided to the first area 200 through the first air intake duct 38 and the air vent 50a1. The air drawn into the first area 200 is supplied to the heating coil 30 , the display board 31 , the operation board 32 , the filter circuit board 33 and the first inverter circuit board 34 by the first cooling fan 35 .

In the first area 200 of the main body 3, since the amount of heat generated in the first inverter circuit board 34 is large, the temperature rise of the mounted components is large. Therefore, for one of the two first cooling fans 35, the air outlet of the first cooling fan 35 is communicated with the opening of the protective member 37 to preferentially supply air to the first inverter circuit board 34. there is According to this configuration, since the temperature rise of the first inverter circuit board 34 can be efficiently suppressed, the heating coil 30 can be stably driven.

Most of the air that has cooled the heating coil 30 , the display substrate 31 , the operation substrate 32 and the filter circuit substrate 33 is supplied to the heating coil 30 . The air that has cooled the heating coil 30 is discharged from the induction heating cooker 1 through the outlet 2b1 and the opening 2c1 of the outlet cover 2c.

In addition to the heating chamber 6, the second area 300 of the main body 3 accommodates a first heater 60a (upper heating source of the present invention), a second heater 60b (lower heating source of the present invention), and an infrared temperature sensor 61. ing. The second region 300 of the main body 3 includes a first exhaust duct 3b1 that communicates the second region 300 with the left exhaust port 2b1 of the top plate 2, and a right exhaust port 2b1 of the top plate 2 with the second region 300. A second exhaust duct 3b2 is provided to communicate with the . The first exhaust duct 3 b 1 and the second exhaust duct 3 b 2 are arranged inside the main body 3 through the bottom surface of the housing 50 .

The heating chamber 6 is provided inside the main body 3 and is a rectangular inner box with an open front surface. The heating chamber 6 accommodates a cooking plate 6b that is housed inside the heating chamber 6 and on which the object to be cooked is placed. The cooking plate 6b has, for example, a saucer 6b1 for containing liquid generated when the food to be cooked is heated, and a plate 6b2 for placing the food to be heated. The interior of the heating chamber 6 communicates with the interior of the first exhaust duct 3b1.

The first heater 60 a and the second heater 60 b are one of heating sources for heating the food stored inside the heating chamber 6 . As the first heater 60a and the second heater 60b, for example, electric radiation heaters such as sheathed heaters are used. The first heater 60 a is arranged on the upper surface of the heating chamber 6 . The second heater 60 b is arranged on the lower surface of the heating chamber 6 . The first heater 60a and the second heater 60b are covered with a heat shield member to suppress heat loss of the first heater 60a and the second heater 60b.

The infrared temperature sensor 61 is a non-contact temperature sensor that receives infrared rays emitted from the food to be cooked inside the heating chamber 6 and converts the infrared rays into temperature information. As the infrared temperature sensor 61, for example, a thermocouple sensor made of polycrystalline silicon is used. The infrared temperature sensor 61 is arranged on the right side of the heating chamber 6, and arranged obliquely downward so that the infrared element faces the food to be cooked.

A microwave heating source 62 is provided on the back of the heating chamber 6 . The microwave heating source 62 is one of the heating sources that heat the food stored inside the heating chamber 6 .

In the heating chamber 6, by using the first heater 60a, the second heater 60b, and the microwave heating source 62, at least three cooking modes can be performed. For example, the heating chamber 6 can run a “range mode” using only the microwave heating source 62 . Further, in the heating chamber 6, a "grill mode" using at least one of the first heater 60a and the second heater 60b can be executed. In the heating chamber 6, a "range grill mode" combining "range mode" and "grill mode" can be executed.

The microwave heating source 62 includes a microwave oscillator 62a, a waveguide 62b, an antenna 62c, an antenna cover 62c1, a motor 62d, and a microwave transmitting plate 62e.

The microwave oscillator 62a is a source of microwaves. Here, microwaves refer to high-frequency radio waves of 2450 MHz±50 MHz.

The microwave oscillator 62a has a magnetron 62a1, which is an oscillator, and a radiator element 62a2 for cooling the heat generated in the microwave oscillator 62a. The microwave oscillator 62a is fixed to the second exhaust duct 3b2 so that the heat dissipation element 62a2 is located inside the second exhaust duct 3b2. The magnetron 62a1 is arranged outside the second exhaust duct 3b2 and surrounded by the waveguide 62b.

The waveguide 62b is a piping member that constrains propagation of microwaves generated by oscillation of the magnetron 62a1 and guides the microwaves toward the inside of the heating chamber 6. As shown in FIG. Waveguide 62b is formed, for example, as a metallic conduit.

A motor 62d for driving the antenna 62c is provided outside the waveguide 62b. A DC motor such as a brushless motor is used as the motor 62d.

The antenna 62c is accommodated in an antenna cover 62c1 that connects the waveguide 62b and the back surface of the heating chamber 6. As shown in FIG. The antenna 62c is a rotating member that agitates the microwaves propagated to the antenna 62c by rotation and propagates the microwaves inside the heating chamber 6. As shown in FIG. The antenna 62c is formed as, for example, a circular metal plate member.

The antenna cover 62c1 is a piping member formed so that microwaves are uniformly propagated inside the heating chamber 6 by the rotation of the antenna 62c. The antenna cover 62c1 is formed, for example, as a metallic conduit made of the same material as the waveguide 62b.

The microwave transmission plate 62 e is a plate-like member that closes the microwave transmission hole 6 c provided on the back surface of the heating chamber 6 from the outside of the heating chamber 6 . The microwave transmitting plate 62e is made of, for example, heat-resistant plastic or heat-resistant glass that transmits microwaves.

A microwave generated by oscillation of the magnetron 62a1 propagates to the antenna 62c via the waveguide 62b. When the motor 62d is driven to rotate the antenna 62c, the microwave propagated to the antenna 62c is diffused and propagated inside the heating chamber 6 via the microwave transmitting plate 62e. As a result, uneven heating of the food stored in the heating chamber 6 is improved.

The second region 300 of the main body 3 accommodates the second inverter circuit board 63, the microwave control power circuit board 64, the second cooling fan 65a, and the third cooling fan 65b.

The second inverter circuit board 63 is an electric circuit board that converts AC power from a commercial power supply into high-frequency AC power and supplies the same to the microwave oscillator 62a. Further, the second inverter circuit board 63 may be provided with a heat radiating member so that the heat generated from the second inverter circuit board 63 can be cooled. Further, the second inverter circuit board 63 may have switching elements formed of insulated gate bipolar transistors, for example. The commercial power supplied to the second inverter circuit board 63 may be AC power of the commercial power supply from which noise has been removed by the filter circuit board 33 .

The microwave control power circuit board 64 supplies power to the microwave oscillator 62a, the antenna 62c, the motor 62d, the second inverter circuit board 63, the second cooling fan 65a, and the third cooling fan 65b. This is an electric circuit board dedicated to microwave control. The microwave control power supply circuit board 64 controls the power supplied to the microwave oscillator 62a and the like, and controls the start and stop of the operation of the microwave oscillator 62a and the like, or the operating conditions.

The second cooling fan 65 a is a rotating machine that draws air passing through a second air inlet 3 a 2 provided in the center of the bottom right side of the main body 3 into the second area 300 of the main body 3 . As the second cooling fan 65a, for example, an axial fan such as a propeller fan is used. The rotation of the second cooling fan 65a causes the air that has passed through the second intake port 3a2 to be blown upward from the bottom surface of the main body 3. As shown in FIG. The second intake port 3a2 is formed by punching holes in the bottom surface of the main body 3, for example. A second air intake duct 66 for communicating between the communication passage 3c1 formed in the upper part of the heating chamber 6 and the second air intake port 3a2 is provided inside the main body 3 on the right side. A second inverter circuit board 63 is arranged inside 66 .

The third cooling fan 65b is a rotating machine that draws air passing through a third air intake port 3a3 provided on the rear right side of the bottom surface of the main body 3 into the second region 300 of the main body 3. As shown in FIG. As the third cooling fan 65b, for example, an axial fan such as a propeller fan is used. The rotation of the third cooling fan 65b causes the air that has passed through the third intake port 3a3 to be blown upward from the bottom surface of the main body 3. As shown in FIG. The third intake port 3a3 is formed by punching holes in the bottom surface of the main body 3, for example.

The air flow in the second region 300 of the main body 3 when the heating chamber 6 of the induction heating cooker 1 is driven will be described with reference to FIGS. 9 and 10. FIG. As mentioned above, in FIG. 9, airflow is indicated by block arrows. Further, the solid-line arrows in FIG. 10 indicate the main stream of air, and the dotted-line arrows indicate tributaries with a lower flow rate than the main stream. In addition, it is assumed that the microwave heating source 62 is used in the induction heating cooker 1, that is, either the "range mode" or the "range grill mode" is being executed.

The rotation of the second cooling fan 65a draws the air sucked from the second air intake port 3a2 into the second air intake duct 66. As shown in FIG. In the second intake duct 66 , the second inverter circuit board 63 is cooled by the air drawn into the second intake duct 66 . A wind direction plate 66 a may be provided in the second air intake duct 66 to deflect the air to the switching elements of the second inverter circuit board 63 or the like.

Also, part of the air drawn into the second air intake duct 66 is supplied to the infrared temperature sensor 61 via a branch pipe 66 b branching from the second air intake duct 66 . The infrared temperature sensor 61 is cooled by the air supplied to the infrared temperature sensor 61 . Part of the air that has cooled the infrared temperature sensor 61 flows into the heating chamber 6 .

The air that has cooled the second inverter circuit board 63 flows from the second intake duct 66 into the communication passage 3c1. The air that has flowed into the communication path 3c1 flows into the first exhaust duct 3b1 via the communication port 3c2 provided in the second exhaust duct 3b2. The air that has flowed into the first exhaust duct 3b1 is attracted by the air that has flowed out of the heating chamber 6, and exits the induction heating cooker 1 through the left exhaust port 2b1 of the top plate 2 and the opening 2c1 of the exhaust port cover 2c. exhausted.

Due to the rotation of the third cooling fan 65b, the air sucked from the third intake port 3a3 is drawn to the second exhaust duct 3b2. The air drawn to the second exhaust duct 3 b 2 passes through the heat dissipation element 62 a 2 of the microwave oscillator 62 a of the microwave heating source 62 . The microwave oscillating device 62a of the microwave heating source 62 is cooled by the air that has passed through the heat dissipation element 62a2 of the microwave oscillating device 62a. The air that has cooled the microwave oscillator 62a is discharged from the induction heating cooker 1 via the second exhaust duct 3b2, the right exhaust port 2b1 of the top plate 2, and the opening 2c1 of the exhaust port cover 2c.

As described above, the heating chamber 6 employs the microwave heating source 62 as a heating source. In addition, the heating chamber 6 has a heating element that prevents microwaves from leaking from the heating chamber 6 when the heating chamber door 4 is closed, and prevents the microwave heating source 62 from operating when the heating chamber door 4 is open. A warehouse door open/close detection device 67 is provided.

The heating chamber door opening/closing detection device 67 is a safety device that stops driving the second inverter circuit board 63, for example, when the heating chamber door 4 is in an open state or when the heating chamber door 4 is insufficiently closed. The heating chamber door opening/closing detector 67 has a first contact switch 67a and a second contact switch 67b. The heating chamber door opening/closing detection device 67 is housed inside the heating chamber 6 and arranged outside the heating chamber 6 , for example, housed inside the front right side of the main body 3 . The first contact switch 67a is arranged above the second contact switch 67b. The first contact switch 67a has a first interlocking rod 67a1, and when the first interlocking rod 67a1 is pushed down to a certain position, the first contact switch 67a is activated. The second contact switch 67b has a second interlocking rod 67b1, and when the second interlocking rod 67b1 is pushed down to a certain position, the second contact switch 67b is activated. Although not shown, the heating chamber door open/close detection device 67 supplies electric power to the second inverter circuit board 63 when at least one of the first contact switch 67a and the second contact switch 67b does not stop due to an abnormality. A monitor switch is provided to cut off the supply.

A first projection 4f1 and a second projection 4f2 are provided on the right side of the rear surface of the heating chamber door 4. As shown in FIG. The first protrusion 4f1 is arranged to press down the first interlocking rod 67a1 of the first contact switch 67a to activate the first contact switch 67a when the heating chamber door 4 is closed. The second protrusion 4f2 is arranged to push down the second interlocking rod 67b1 of the second contact switch 67b to activate the second contact switch 67b when the heating chamber door 4 is closed.

The heating chamber door open/close detection device 67 is configured to drive the microwave heating source 62 only when both the first contact switch 67a and the second contact switch 67b are activated. On the other hand, when either the first contact switch 67a or the second contact switch 67b is in a stopped state, the second inverter circuit board 63 is locked so that the microwave heating source 62 is not driven. be done. Further, when the heating chamber door 4 is opened while the microwave heating source 62 is being driven, the second inverter circuit board 63 that supplies power to the microwave heating source 62 is immediately stopped from being driven. be. According to this configuration, even if the heating chamber door 4 is not completely closed, that is, in a half-open state, or if the heating chamber door 4 is opened while the microwave heating source 62 is in operation, the microwave can be prevented from leaking to the outside, safety can be improved.

Next, the attachment of the heating chamber door 4 to the main body 3, the opening/closing structure, and the inner structure of the main body around the heating chamber door 4 will be described with reference to FIGS. 11 to 15. FIG. FIG. 11 is a front view of the main body with the heating chamber door opened. FIG. 12 is an enlarged sectional view showing the internal structure of the connecting portion between the heating chamber door and the main body. FIG. 13 is a sectional view showing the YY section of FIG. FIG. 14 is a sectional view showing the XX section of FIG. 15 is a sectional view showing a state in which the heating chamber door is opened in FIG. 14. FIG.

When the induction heating cooker 1 is viewed from the front, the heating chamber door 4 is sandwiched between the second panels 72 of the decorative panel 7. When the heating chamber door 4 is opened as shown in FIG. The face plate 6a1 is exposed and visible. An opening 6a on the front surface of the heating chamber 6 is provided in the heating chamber front plate 6a1.

Also, on the heating chamber front plate 6a1, an arm 40a, which is a connection member of the present invention for connecting the heating chamber door 4 and the main body 3 so as to be able to be opened and closed (the opening and closing operation of the heating chamber door 4 including the arm 40a will be described later in detail). ) is provided through a connecting member through-hole 6a2.

As shown in FIG. 11, the arms 40a are arranged on the outside of the left and right sides of the heating chamber 6, respectively. Specifically, as shown in FIG. 13, an arm 40a is arranged further outside a heat shielding wall 6d provided with a space (a space in the embodiment of the present invention) from the outside of the heating chamber 6 on the left and right sides thereof. there is In other words, between the outside of the left and right sides of the heating chamber 6 and the arms 40a, the heat insulating walls 6d are provided with a space between the outer sides of the left and right sides of the heating chamber 6 and the arms 40a.

The connecting member through-holes 6a2 are openings through which the arm 40a passes when the heating chamber door 4 is opened and the arm 40a moves out of the main body 3 from the inside of the main body 3. are placed in each.

As described above, the arm 40a extends from the inside of the main body 3 to the outside of the main body 3 when the heating chamber door 4 is opened, and most of the arm 40a is exposed outside the main body 3 (see FIG. 15). Since the arm 40a is arranged near the heating chamber 6, there is a possibility that the temperature of the arm 40a increases due to the influence of the heat generated by the first heater 60a and the second heater 60b during cooking in the heating chamber 6. be.

In addition, since the heating cooker 1 of the embodiment of the present invention is used while being accommodated in the kitchen furniture 100, there is also a dimensional restriction due to the kitchen furniture 100, and the height dimension of the opening 6a of the heating chamber 6 is , the height dimension of the interior of the heating chamber 6 is also relatively low. As an example, the size of the interior of the refrigerator in the height direction is suppressed to 130 mm (see FIG. 9) or less. Note that the height dimension of the opening 6a of the heating chamber 6 and the height dimension of the interior of the heating chamber 6 are only examples, and are not limited to these. .

In the case of a structure such as the heating chamber 6 in which the height direction is kept low in this way, the distance between the first heater 60a and the second heater 60b is short, so the arm 40a is more easily affected by heat. Therefore, in order to suppress the influence of the heat received by the arm 40a, a heat shield wall 6d is provided between the outside of the left and right sides of the heating chamber 6 and the arm 40a with a space between the outside of the left and right sides of the heating chamber 6. are provided.

A heat insulating layer is formed by providing a heat shielding wall 6d spaced apart from the outside of the heating chamber 6 on the left and right sides thereof, and an arm 40a is arranged outside of it to prevent the main body 3 from opening when the heating chamber door 4 is opened. Even if the user touches the arm 40a exposed to the outside, it is possible to reduce the risk of being burned, thereby improving safety.

In the embodiment of the present invention, a space is provided between the outer side of the heating chamber 6 and the heat shielding wall 6d. The same effect can be obtained even if

As shown in FIG. 13, the heating chamber door open/close detection device 67 is provided on the opposite side of the heat shield wall 6d with the arm 40a interposed therebetween. By arranging the heating chamber door opening/closing detection device 67 in this way, the influence of the heat received by the heating chamber door opening/closing detection device 67 is reduced, and the occurrence of troubles in the heating chamber door opening/closing detection device 67 is suppressed.

As shown in FIG. 11, the connecting member through-hole 6a2 is opened across the center of the opening 6a of the heating chamber 6 in the height direction. In the embodiment of the present invention, as an example, the dimension from the center of the opening 6a of the heating chamber 6 in the height direction to the upper end of the connecting member through-hole 6a2 is t1, and the distance from the center of the opening 6a of the heating chamber 6 in the height direction is t1. The dimension to the lower end of the member through-hole 6a2 is t2, and the relationship t1<t2 may be established, but the relationship t1=t2 may also be established.

Also, the lower end of the opening of the connecting member through-hole 6 a 2 is located above the lower end of the opening 6 a of the heating chamber 6 . In other words, the lower end of the opening of the connecting member through-hole 6 a 2 is located higher than the lower end of the opening 6 a of the heating chamber 6 . In a heating cooker such as the heating cooker 1 of the embodiment of the present invention, various heat sources for cooking and the power supply circuit generate heat during cooking within the main body 3, thereby increasing the internal pressure. As the internal pressure increases, the air inside the main body 3 is pushed out from an opening such as the connecting member through-hole 6a2.

Therefore, if the lower end of the opening of the connecting member through-hole 6a2 is provided so as to be the same as the lower end of the opening 6a of the heating chamber 6 or lower than the lower end of the opening 6a of the heating chamber 6, the outside of the heating chamber 6 It is conceivable that the heat generated by the second heater 60b (lower heating source of the present invention) provided below is pushed out as it is, which may impair the safety of the user. Therefore, the lower end of the opening of the connecting member through-hole 6a2 is positioned above the lower end of the opening 6a of the heating chamber 6 so that the heat generated by the second heater 60b (lower heating source of the present invention) is not pushed out as it is. This ensures that user safety is not compromised.

Further, in order to reduce the amount of air in the main body 3 that is pushed out from the connecting member through-hole 6a2, the length of the connecting member through-hole 6a2 in the width direction is made shorter than the height of the connecting member through-hole 6a2. The height of the opening 6a2 is half or less than the height of the opening 6a of the heating chamber 6. - 特許庁By doing so, the amount of high-temperature air pushed out from the inside of the main body 3 and exiting from the connecting member through-hole 6a2 is reduced, so that the safety of the user is not hindered. In the embodiment of the present invention, as an example, the height of the opening 6a of the heating chamber 6 is 120 mm, the height of the connecting member through-hole 6a2 is 60 mm, and the length in the width direction is 8 mm. , the length of the width direction of the connecting member through-hole 6a2 is shorter than the height of the connecting member through-hole 6a2, and the height of the connecting member through-hole 6a2 is half or less than the height of the opening 6a of the heating chamber 6. effect can be obtained.

As shown in FIGS. 14 and 15, the heating chamber door 4 is hinged to the heating chamber 6 via an arm 40a and a hinge 40b so as to rotate forward and downward. The arm 40a and the hinge 40b are made of sheet metal, for example. An elastic body 40c such as a spring is provided between the arm 40a and the hinge 40b to provide a load for opening or closing the arm 40a. The hinge 40b is fixed to the bottom of the main body 3 by screwing, brazing, or the like.

The arm 40a has a first bearing 40a1 housed inside the heating chamber door 4, and a stopper 40a2 that is a holding member that holds the rear surface of the heating chamber door 4 on the main body 3 when the heating chamber door 4 is closed. there is A first shaft 4a1 provided inside the heating chamber door 4 is rotatably attached to the first bearing 40a1. The arm 40a includes a sliding portion 40a3 that defines the rotation direction of the heating chamber door 4, an engaging portion 40a4 that defines the rotation limit of the heating chamber door 4 when the heating chamber door 4 is opened, and an elastic member. and a first mooring portion 40a5 to which one end of 40c is moored.

The hinge 40b includes a second bearing 40b1 housed inside the heating chamber door 4, a roller 40b2 that slides the arm 40a on the top, and a support that is fixed to the bottom of the main body 3 and rotatably supports the roller 40b2. It has a platform 40b3. A second shaft 4a2 provided inside the heating chamber door 4 is rotatably attached to the second bearing 40b1. The hinge 40b also has a second anchoring portion 40b4 to which the other end of the elastic body 40c is anchored.

As shown in FIG. 14, when the heating chamber door 4 is closed, the roller 40b2 is held by the stopper 40a2 and its movement is limited by the elasticity of the elastic body 40c. Therefore, even if the heating chamber door 4 faces downward when the induction heating cooker 1 is installed, it is possible to prevent the heating chamber door 4 from being opened due to the weight of the heating chamber door 4 itself. In addition, even if vibrations are propagated to the induction heating cooker 1 due to an earthquake or the like, the occurrence of an error in the contact position between the heating chamber door 4 and the heating chamber 6 is suppressed, and the rear surface of the heating chamber door 4 is aligned with the main body 3. can be held. Therefore, since the arm 40a has the stopper 40a2, it is possible to prevent microwaves from leaking to the outside, so that the safety of the induction heating cooker 1 can be improved.

Further, when the user moves the handle 5 forward, the stopper 40a2 is separated from the roller 40b2, slides the sliding portion 40a3, and is engaged with the engaging portion 40a4. Further movement of the arm 40a is suppressed by engaging the roller 40b2 with the engaging portion 40a4. In general, the heating chamber door 4 is heavier than the door of a heating cooker that does not use microwaves in order to suppress transmission of microwaves. Therefore, the load on the arm 40a or the hinge 40b due to the movement of the heating chamber door 4 is greater than in a cooking device that does not use microwaves. However, since the arm 40a has the engaging portion 40a4, the movement of the heating chamber door 4 can be restricted, so the load on the arm 40a or the hinge 40b due to the movement of the heating chamber door 4 is reduced. Therefore, by having the engaging portion 40a4 on the arm 40a, deformation or damage to the arm 40a or the hinge 40b can be suppressed.

Then, when the heating chamber door 4 is completely closed as shown in FIG. is arranged in the main body 3 so that a part thereof overlaps the center of the height direction of the opening 6a of the heating chamber 6, and the arm 40a is substantially horizontal. It is arranged at a distance from both the first heater 60a (upper heating source of the present invention) provided above and the second heater 60b (lower heating source of the present invention) provided below the outside of the heating chamber 6. Become so. Therefore, by arranging the arm 40a in the main body 3 at a position where a part of the arm 40a overlaps the center of the opening 6a of the heating chamber 6 in the height direction, the arm 40a is arranged at a distance from the first heater 60a and the second heater 60b. Therefore, the influence of the heat received from the first heater 60a and the second heater 60b of the arm 40a can be reduced, and when the heating chamber door 4 is opened, the arm 40a is exposed and can be touched by the user. Even if it becomes, the safety of the user is not hindered.

Also, as shown in FIG. 14, when most of the arm 40a (connecting member of the present invention) is accommodated in the main body 3, the uppermost end of the arm 40a and the first heater 60a (the connecting member of the present invention) The distance T2 from the upper heating source of the present invention) is longer than the distance T1 from the center of the opening 6a of the heating chamber 6 in the height direction to the uppermost end of the arm 40a, and the lowermost end of the arm 40a and the second heater 60b ( The distance T4 from the lower heating source) is longer than the distance T3 from the center of the opening 6a of the heating chamber 6 in the height direction to the lowest end of the arm 40a. By doing so, the arm 40a can be arranged at a distance from the first heater 60a and the second heater 60b, so that the influence of the heat received from the first heater 60a and the second heater 60b of the arm 40a can be reduced. Even if the arm 40a is exposed when the storage door 4 is opened and the user can touch it, the user's safety is not hindered.

Furthermore, when the heating chamber door 4 is completely opened as shown in FIG. ) remaining in the main body 3 is located in the main body 3 so that part of it overlaps the center of the opening 6a of the heating chamber 6 in the height direction, so even if the arm 40a moves, The portion of the arm 40a remaining inside the main body 3 does not approach the first heater 60a and the second heater 60b, and the portion of the arm 40a remaining inside the main body 3 is separated from the first heater 60a and the second heater 60b. Since the influence of the heat received can be reduced, and the heat transfer to the exposed portion of the arm 40a can be reduced, the user's safety is not hindered even if the user touches the arm 40a.

As shown in FIG. 12, when the heating chamber door 4 is completely open, the inner bottom surface 6e of the heating chamber 6 and the inner side surface 4d of the heating chamber door 4 are substantially at the same height in the horizontal direction. It is designed to be By doing this, when the cooking plate 6b on which the food to be cooked is placed is stored in the heating chamber 6 before cooking, the cooking plate 6b can be temporarily placed on the inner side surface 4d of the heating chamber door chamber, or can be placed in the heating chamber after cooking. Since the cooking plate 6b can be temporarily placed when the cooking plate 6b is taken out from 6, the usability for the user is improved.

1 induction heating cooker, 2 top plate, 2a top plate, 2a1, 2a2, 2a3 mark, 2b frame, 2b1 exhaust port, 2c exhaust port cover, 2c1 opening, 2d cushioning material, 3 main body, 3a1 first intake port, 3a2 Second intake port 3a3 Third intake port 3b1 First exhaust duct 3b2 Second exhaust duct 3c1 Communication passage 3c2 Communication port 4 Heating chamber door 4a1 First shaft 4a2 Second shaft 4c Window 4d 4f1 First projection 4f2 Second projection 5 Handle 6 Heating chamber 6a Opening 6a1 Heating chamber front plate 6a2 Connecting member through hole 6a3 First contact switch hole 6a4 Second Hole for contact switch 6b Cooking plate 6b1 Saucer 6b2 Plate 6c Microwave transmission hole 6d Heat shielding wall 6e Inside bottom surface 7 Cosmetic panel 8 Liquid receiving container 20 Operation panel 21a Integrated display unit 21b First display section 21c Second display section 22a First heating power display section 22b Second heating power display section 23 First input section 23a Function setting button 23b Cooking mode selection button 23c1 First input selection button 23c2 Second input selection button 23c3 Third input selection button 23d Input confirm button 23e Input cancel button 24 Second input section 24a First cooking time selection button 24b First control mode selection button 24c First switching button , 24d first heating power selection button, 25 third input section, 25a second switching button, 25b second heating power selection button, 25c second control mode selection button, 25d second cooking time selection button, 26 fourth input section, 27 Notification window 30 Heating coil 31 Display board 31a Output device 32 Operation board 33 Filter circuit board 34 First inverter circuit board 34a Switching element 35 First cooling fan 36 Heat sink 36a Radiation fin 37 Protection Member, 38 first intake duct, 40a arm (connecting member of the present invention), 40a1 first bearing, 40a2 stopper, 40a3 sliding portion, 40a4 engaging portion, 40a5 first mooring portion, 40b hinge, 40b1 second bearing, 40b2 roller, 40b3 support base, 40b4 second mooring portion, 40c elastic body, 50 housing, 50a box, 50a1 vent, 50b flange, 60a first heater (upper heating source of the present invention), 60b second heater ( Lower heating source of the present invention), 61 infrared temperature sensor, 62 microwave heating source, 62a microwave oscillator, 62a1 magnetron, 62a2 heat dissipation element, 62b waveguide, 62c antenna, 62c1 antenna cover, 62d motor, 62e microwave Transmission plate 63 Second inverter circuit board 64 Microwave control power supply circuit board 65a Second cooling fan 65b Third cooling fan 66 Second intake duct 66a Wind direction plate 66b Branch pipe 67 Heating chamber door opening/closing Detection device 67a First contact switch 67a1 First interlocking rod 67b Second contact switch 67b1 Second interlocking rod 70 First panel 72 Second panel 100 Kitchen furniture 110 First accommodation space 110a Accommodation opening , 110b insertion port, 120 storage box, 130 second storage space, 140 handle, 150 partition plate, 200 first region, 300 second region.

Claims (10)

A heating chamber provided in the main body and having an open front surface so as to accommodate the object to be heated;
a heating chamber door that closes the opening of the heating chamber;
An upper heating source provided above the outside of the heating chamber and a lower heating source provided below the outside of the heating chamber for heating the object to be heated housed in the heating chamber, and controlling heating by the heating sources a heating source control means,
The maximum height dimension of the opening of the heating chamber is 120 mm or less, or the maximum height dimension within the heating chamber is 130 mm or less,
A connecting member that can open and close the heating chamber door is connected to the main body,
Between the outer side of the left and right side walls of the heating chamber and the connecting member, a heat shield wall is provided with a space from the outer side of the left and right side walls,
The heating chamber has a front plate provided with the opening,
The front plate is provided with a connecting member through-hole through which the connecting member connected to the main body penetrates toward the heating chamber door,
The connecting member through-hole is opened so as to straddle the center of the opening of the heating chamber in the height direction,
A heating cooker in which the lower end of the connecting member through-hole is open so as to be higher than the lower end of the opening of the heating chamber. A heating chamber provided in the main body and having an open front surface so as to accommodate the object to be heated;
a heating chamber door that closes the opening of the heating chamber rotatably supported by the main body;
An upper heating source provided above the outside of the heating chamber and a lower heating source provided below the outside of the heating chamber for heating the object to be heated housed in the heating chamber, and controlling heating by the heating sources a heating source control means,
The maximum height dimension of the opening of the heating chamber is 120 mm or less, or the maximum height dimension within the heating chamber is 130 mm or less,
A connecting member that can open and close the heating chamber door is connected to the main body,
Between the outer side of the left and right side walls of the heating chamber and the connecting member, a heat shield wall is provided with a space from the outer side of the left and right side walls,
The heating chamber has a front plate provided with the opening,
The front plate is provided with a connecting member through-hole through which the connecting member connected to the main body penetrates toward the heating chamber door,
The connecting member through-hole is opened so as to straddle the center of the opening of the heating chamber in the height direction,
A heating cooker in which the lower end of the connecting member through-hole is open so as to be higher than the lower end of the opening of the heating chamber. A heating chamber door open/close detection device for detecting opening and closing of the heating chamber door is provided in the main body,
3. The heating cooker according to claim 1, wherein the heating chamber door opening/closing detection device is provided on the opposite side of the heat shield wall with the connecting member interposed therebetween. A part of the connecting member overlaps the center of the opening of the heating chamber in the height direction in the main body when the heating chamber door is in a completely closed state and in a completely open state. The heating cooker according to any one of claims 1 to 3, wherein the heating cooker is in the position. When the heating chamber door is in a fully closed state, the vertical distance between the top end of the connecting member housed in the main body and the upper heating source is equal to the height of the opening of the heating chamber. The distance between the lowermost end of the connecting member and the lower heating source is longer than the distance from the center in the height direction to the uppermost end of the connecting member, and the distance between the lowermost end of the connecting member and the lower heating source is the distance from the center in the height direction of the opening of the heating chamber to the uppermost end of the connecting member. The heating cooker according to claim 4, wherein the distance is longer than the distance to the lowest end. 6. The length of the through-hole in the width direction is shorter than the height of the through-hole, and the height of the through-hole is half or less than the height of the opening of the heating chamber. The heating cooker described in . 7. The heating cooker according to any one of claims 1 to 6, further comprising a microwave heating source for supplying microwaves into said heating chamber in said main body. 8. The heating cooker according to claim 7, wherein the microwave supplied into the heating chamber is supplied into the heating chamber from a supply port provided on the back surface of the heating chamber. When the heating chamber door is completely open, the inner bottom surface of the heating chamber and the inner side surface of the heating chamber door are at the same height in the horizontal direction. The heating cooker described. The heating cooker according to any one of claims 1 to 9, wherein the main body is housed in kitchen furniture.

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