JP2024067248A - Heating Cooker - Google Patents

Abstract

To provide a heating cooker which makes cooking work simple.SOLUTION: A heating cooker 100 includes a heating chamber 20, a heater 41, a door 32, a reflection plate 42, and an attitude change part 50. The heating chamber 20 has an opening 25 and an upper wall part 21. The heater 41 is disposed in the heating chamber 20. The door 32 transmits visible light to the interior of the heating chamber 20 through the opening 25 and opens the opening 25 or closes the opening 25. The reflection plate 42 reflects heat of the heater 41. The attitude change part 50 changes an attitude of the reflection plate 42. The attitude change part 50 changes the reflection plate 42 into a first attitude S1 in response to the door 32 closing the opening 25 and changes the reflection plate 42 into a second attitude S2 in response to the door 32 opening the opening 25.SELECTED DRAWING: Figure 2

Description

The present invention relates to a cooking device.

The cooking device described in Patent Document 1 includes a housing having a cooking chamber, a heater, a tray on which food to be cooked is placed, and an opening/closing door having a window pane. The opening/closing door has a heat shield that selectively covers the window pane. The heat shield has a knob that protrudes forward, and the covering state of the window pane can be changed by raising and lowering the knob.

JP 2000-205571 A

However, with the cooking device of Patent Document 1, the user needs to not only place the food to be cooked inside the heating chamber, but also raise and lower the heat shield relative to the window glass. Moreover, in the case of a pull-out type cooking device, the user also needs to retract or pull out the placement section on which the food to be cooked is placed.

The object of the present invention is to provide a cooking device that can simplify cooking operations.

According to one aspect of the present invention, a cooking device includes a heating chamber, a heater, a door, a reflector, and a position change unit. The heating chamber has an opening and an upper wall. The opening is used to insert and remove food to be cooked. The upper wall faces the food to be cooked. The heater is disposed within the heating chamber. The door transmits visible light into the interior of the heating chamber through the opening and opens or closes the opening. The reflector reflects heat from the heater. The position change unit changes the position of the reflector. The position change unit changes the reflector to a first position in response to the door closing the opening, and changes the reflector to a second position in response to the door opening the opening. The first position is a position in which the reflector faces the door. The second position is a position in which the reflector faces the upper wall.

The present invention provides a cooking device that can simplify cooking operations.

1 is a perspective view of a cooking device according to an embodiment of the present invention; FIG. 2 is a side view of the cooking device according to the present embodiment, with part of the housing not shown, showing a state in which the placement portion has been moved to a retracted position. 13 is a side view showing a state in which the placement section has been moved to a drawn-out position. FIG. FIG. 3 is a cross-sectional view showing a planar structure of the cooking device of FIG. 2 . FIG. 4 is a cross-sectional view showing a planar structure of the cooking device of FIG. 3 . 13 is a side view showing a state in which the placement unit is being pulled out. FIG. 7 is a cross-sectional view taken along line VII-VII of FIG. 3. FIG. 3 is an enlarged view of FIG. 2 . 9 is a cross-sectional view taken along line IX-IX of FIG. 8. 13A and 13B are diagrams illustrating a lowered posture of the restricting portion. FIG. 2 is a block diagram showing a calculation processing unit of the heat treatment device.

Embodiments of the present invention will be described below with reference to the drawings. Note that in the drawings, the same or equivalent parts are designated by the same reference symbols and detailed descriptions will not be repeated.

<Embodiment>
First, an overview of a cooking device 100 according to an embodiment of the present invention will be described with reference to Fig. 1 to Fig. 3. Fig. 1 is a perspective view of the cooking device 100 according to an embodiment of the present invention.

As shown in FIG. 1, the cooking device 100 includes a placement section 30. The cooking device 100 heats the food to be cooked. The placement section 30 is where the food to be cooked is placed.

2 is a side view of the cooking device 100 of FIG. 1 with part of the housing 10 omitted, showing the placement section 30 moved to the retracted position P1. FIG. 3 is a side view of the cooking device 100 with the placement section 30 moved to the pulled-out position P2. As shown in FIG. 1 and FIG. 2, the cooking device 100 further includes the housing 10, a heating chamber 20, a door 32, a slide rail 35, a heater 41, a reflector 42, a position change section 50, a regulating section 60, and a microwave radiating section 71. The cooking device 100 of this embodiment is a pull-out type cooking device. The housing 10 has the heating chamber 20 inside. The housing 10 is, for example, a rectangular parallelepiped shape with an open front.

The heating chamber 20 contains the food to be cooked. As shown in FIG. 1, the heating chamber 20 includes an upper wall portion 21, a bottom wall portion 22, a pair of side wall portions 23, and a rear wall portion 24. The heating chamber 20 has an opening portion 25 facing the rear wall portion 24. Specifically, a user puts the food to be cooked in and takes it out of the heating chamber 20 through the opening portion 25. The opening portion 25 has a rectangular shape when viewed from the front. The upper wall portion 21 faces the food to be cooked.

The heater 41 heats the heating chamber 20 by radiant heat. As shown in FIG. 2, the heater 41 is disposed within the heating chamber 20. Specifically, the heater 41 is attached to the upper wall portion 21. Thus, the heater 41 heats the food being cooked from the upper wall portion 21 toward the bottom wall portion 22.

As shown in FIG. 2, the door 32 closes the opening 25. Also, as shown in FIG. 3, the door 32 opens the opening 25. The door 32 has a light-transmitting portion 32a. Therefore, the door 32 transmits visible light into the inside of the heating chamber 20 through the opening 25.

The reflector 42 reflects the heat of the heater 41. The reflector 42 faces the surface of the door 32 facing the heating chamber 20 and partially covers it. When the reflector 42 covers the door 32, it suppresses heat escaping to the outside through the opening 25.

The position change unit 50 changes the position of the reflector 42. The position change unit 50 changes the position of the reflector 42 between a first position S1 and a second position S2 depending on the position of the door 32. The first position S1 indicates a position in which the reflector 42 faces the door 32. The second position S2 indicates a position in which the reflector 42 faces the upper wall portion 21.

2, the position change unit 50 changes the reflector 42 to the first position S1 in response to the door 32 closing the opening 25. As shown in FIG. 3, the position change unit 50 changes the reflector 42 to the second position S2 in response to the door 32 opening the opening 25. Therefore, the reflector 42 can be changed to the first position S1 by changing the position of the door 32. That is, when cooking the food to be cooked, the user can omit the operation of moving the reflector 42 to a position that covers the door 32. In addition, the reflector 42 can be changed to the second position S2 by changing the position of the door 32. That is, when pulling out the food to be cooked, the user can omit the operation of moving the reflector 42 to the door 32 storage position. As a result, the cooking work can be simplified. Furthermore, when the reflector 42 is in the first position S1, it reflects the heat of the heater 41 into the heating chamber 20. Therefore, it is possible to suppress the heat escaping from the heating chamber 20 to the outside through the opening 25. As a result, high-speed cooking is possible.

The cooking device 100 will be described in detail with reference to Figs. 2 to 11. Fig. 4 is a cross-sectional view showing the planar structure of the cooking device in Fig. 2. Fig. 5 is a cross-sectional view showing the planar structure of the cooking device in Fig. 3. Fig. 6 is a side view showing the state in which the placement portion 30 is being pulled out. Hereinafter, the direction from the pulled-out position P2 toward the retracted position P1 will be referred to as the first direction D1. The opposite direction to the first direction D1 will be referred to as the second direction D2. In addition, the direction from the bottom wall portion 22 toward the upper wall portion 21 will be referred to as the third direction D3, and the direction from the upper wall portion 21 toward the bottom wall portion 22 will be referred to as the fourth direction D4. The direction perpendicular to the first direction D1 and the third direction D3 will be referred to as the fifth direction D5. In addition, the third direction D3 may be referred to as the upward direction, the fourth direction D4 as the downward direction, and the fifth direction D5 as the width direction.

As shown in FIG. 2, the mounting section 30 is positioned at a retracted position P1 in response to the closing of the opening 25. Also, as shown in FIG. 3, the mounting section 30 is positioned at a pulled-out position P2 in response to the opening 25 being opened. In other words, the mounting section 30 moves between the retracted position P1 and the pulled-out position P2. The retracted position P1 indicates the position where the mounting section 30 is housed in the heating chamber 20. The pulled-out position P2 indicates the position where a portion of the mounting section 30 is pulled out from the heating chamber 20.

The placement unit 30 includes a bottom plate portion 31, a pair of side plate portions 33, and a back plate portion 34. A part of the placement unit 30 is, for example, the bottom plate portion 31. A door 32 is fixed to the end portion of the bottom plate portion 31 in the second direction D2. Therefore, the placement unit 30 and the door 32 move together. That is, when the placement unit 30 moves to the retracted position P1, the door 32 closes the opening 25. Therefore, the reflector 42 is changed to the first position S1. Also, when the placement unit 30 moves to the drawn-out position P2, the door 32 opens the opening 25. Therefore, the reflector 42 is changed to the second position S2. As a result, the operation of moving the placement unit 30 to the retracted position P1 can be used as the operation of changing the reflector 42 to the first position S1. Also, the operation of moving the placement unit 30 to the drawn-out position P2 can be used as the operation of changing the reflector 42 to the second position S2.

The food to be cooked is placed on the bottom plate portion 31 of the placement portion 30. As shown in FIG. 4, the bottom plate portion 31 is plate-like and is formed into a rectangular shape in a plan view. However, the bottom plate portion 31 of this embodiment is not limited to a rectangular shape, and any shape can be selected as long as the food to be cooked can be placed on it. The bottom plate portion 31 can be made of ceramic, for example. The housing 10 has a pair of side wall portions 11 on one end side and the other end side of the fifth direction D5.

The door 32 is disposed at the end of the bottom plate portion 31 in the second direction D2. The back plate portion 34 is disposed at the end of the bottom plate portion 31 in the first direction D1. The side plate portion 33 is connected to one end and the other end of the bottom plate portion 31 in the fifth direction D5, one end and the other end of the back plate portion 34 in the fifth direction D5, and the back surface of the door 32 on the first direction D1 side.

The slide rail 35 regulates the movement of the mounting portion 30 in the first direction D1 and the second direction D2. The slide rail 35 is attached to one end and the other end of the door 32 in the fifth direction D5. The slide rail 35 extends from the back surface of the door 32 on the first direction D1 side toward the first direction D1. The slide rail 35 is guided toward the first direction D1 and the second direction D2 along a guide portion (not shown) provided on the side wall portion 23.

The reflector 42 has, for example, a mirror surface on the side facing the first direction D1. As shown in FIG. 5, the reflector 42 has a rotation axis 43.

As shown in Figures 3 and 5, the pivot shaft 43 is connected to the end of the reflector 42 in the second position S2 in the second direction D2. One end portion and the other end portion of the pivot shaft 43 in the fifth direction D5 are rotatably supported by the ends of the side wall 11 and the side wall 23 in the third direction D3, respectively. Specifically, the pivot shaft 43 is disposed to extend in the fifth direction D5 at the end of the housing 10 in the second direction D2.

An angle 44 is fixed to one end of the rotating shaft 43 in the fifth direction D5. As shown in FIG. 5, the angle 44 is in the same position as the reflector 42. Specifically, when the reflector 42 is in the first position S1, the angle 44 extends from the rotating shaft 43 in the fourth direction D4, and when the reflector 42 is in the second position S2, the angle 44 extends from the rotating shaft 43 in the first direction D1. The angle 44 and the reflector 42 rotate synchronously via the rotating shaft 43.

Next, the position change unit 50 will be described in detail. As shown in FIG. 6, the position change unit 50 has a first rotating unit 51, a second rotating unit 52, a transmission unit 54, a second transmission unit 53, a first rack unit 55, a second rack unit 56, a third rack unit 57, and a biasing unit 58.

3, 5, and 6, when the placement portion 30 is in the drawn-out position P2, the biasing portion 58 biases the reflecting plate 42 located on the door 32 side toward the upper wall portion 21 side. The biasing portion 58 pulls the angle 44 in the first direction D1. One side end of the angle 44 is connected to the rotating shaft 43, and the other side end is connected to one side end of the biasing portion 58. The other side end of the biasing portion 58 is disposed in the first direction D1 with respect to the rotating shaft 43. The biasing portion 58 is, for example, a coil spring. Therefore, the angle 44 is always pulled toward the upper wall portion 21. In other words, when the placement portion 30 is in the drawn-out position P2, the reflecting plate 42 is close to the upper wall portion 21. As a result, it is possible to avoid the reflecting plate 42 becoming an obstacle to putting in and taking out the food to be cooked. It is also possible to avoid the reflecting plate 42 becoming an obstacle to cleaning the heating chamber 20.

As shown in FIG. 5, the first rotating part 51 has a rotation center fixed to the rotation shaft 43. The first rotating part 51 is disposed between the reflector 42 and the angle 44 in the fifth direction D5. In other words, when the first rotating part 51 rotates, the angle 44 and the reflector 42 rotate via the rotation shaft 43. In other words, the first rotating part 51 rotates while being connected to the reflector 42.

The second rotating part 52 rotates in conjunction with the movement of the mounting part 30. In other words, the second rotating part 52 rotates in response to the closing and opening of the opening 25. The second rotating part 52 is disposed away from the first rotating part 51 in the fourth direction D4. The second rotating part 52 is rotatably supported at one end of the housing 10 in the fifth direction D5.

The transmission unit 54 will be described in detail with reference to Figures 2, 3, 6, and 7. Figure 7 is a cross-sectional view taken along line VII-VII in Figure 3. The transmission unit 54 is disposed from the second direction D2 side portion of the first rotating part 51 to the first direction D1 side portion of the second rotating part 52. As shown in Figure 6, the transmission unit 54 is positioned in the third direction D3 as it approaches the second direction D2.

As shown in FIG. 7, the movement of the transmission part 54 is guided by the guide part 12. The guide part 12 is fixed to the side wall part 11. The guide part 12 has a bearing 13. The bearing 13 slidably supports the first direction D1 side end and the second direction D2 side end of the transmission part 54.

6, the transmission unit 54 includes a second rack portion 56 and a third rack portion 57. The second rack portion 56 is disposed at the end of the transmission unit 54 on the third direction D3 side. The second rack portion 56 meshes with the second direction D2 side portion of the first rotation portion 51. The third rack portion 57 is disposed at the end of the transmission unit 54 on the fourth direction D4 side. The third rack portion 57 meshes with the first direction D1 side portion of the second rotation portion 52. The transmission unit 54 transmits the rotation of the second rotation portion 52 to the first rotation portion 51. Therefore, when the second rotation portion 52 is rotated by the movement of the placement unit 30, the first rotation portion 51 rotates. Therefore, the first rotation portion 51 is rotated in response to the closing and opening of the door 32. As a result, the posture of the reflector 42 can be changed in response to the closing and opening of the door 32. The fourth direction D4 side portion of the second rotation portion 52 meshes with the first rack portion 55.

6, the first rack portion 55 is disposed in the second direction D2 side portion of the second transmission portion 53 in the third direction D3 side portion. As shown in FIG. 2, when the first rack portion 55 moves in the second direction D2, the transmission portion 54 moves in the fourth direction D4. As a result, the reflector 42 is changed to the second posture S2. As shown in FIG. 3, when the first rack portion 55 moves in the first direction D1, the transmission portion 54 moves in the third direction D3. As a result, the reflector 42 is changed to the first posture S1. The first rack portion 55 is partially disposed at the end portion of the second transmission portion 53 in the second direction D2. That is, when the placement portion 30 moves a predetermined distance in the second direction D2, the engagement between the first rack portion 55 and the second rotation portion 52 is released. After the engagement between the first rack portion 55 and the second rotation portion 52 is released, the biasing portion 58 draws the angle 44 to the upper wall portion 21. As a result, the first rotation portion 51 rotates.

The second transmission unit 53 is supported by the slide rail 35. The slide rail 35 is fixed to the outside of the side plate portion 33 of the mounting portion 30 in the fifth direction D5. In other words, the slide rail 35 moves in synchronization with the movement of the mounting portion 30. Therefore, the second transmission unit 53 moves in synchronization with the movement of the mounting portion 30. Therefore, the second transmission unit 53 transmits the movement of the mounting portion 30 to the second rotation unit 52. As a result, the movement of the mounting portion 30 can be converted into a change in the posture of the reflector 42.

The restricting portion 60 will be described in detail with reference to Figures 8 to 10. Figure 8 is an enlarged view of Figure 2. Figure 9 is a cross-sectional view taken along line IX-IX of Figure 8. Figure 10 is a view explaining the lowered position of the restricting portion 60.

The restricting portion 60 engages the mounting portion 30 and the second rotating portion 52. The restricting portion 60 moves (raises and lowers) the second transmitting portion 53 in the third direction D3 and the fourth direction D4 relative to the slide rail 35. The restricting portion 60 includes a plunger portion 61 and a plurality of second biasing portions 62.

As shown in FIG. 8, the multiple second biasing parts 62 bias the second transmission part 53 in the third direction D3. There are, for example, three second biasing parts 62. The end of the second biasing part 62 in the third direction D3 is connected to the end of the second transmission part 53 in the third direction D3. The end of the second biasing part 62 in the fourth direction D4 is supported by the slide rail 35.

The plunger portion 61 is supported by the side wall portion 11. The plunger portion 61 is disposed at a predetermined distance from the second rotating portion 52 in the fourth direction D4. The plunger portion 61 includes a rod 63 and an engaging portion 64. The rod 63 rises in the third direction D3 and descends in the fourth direction D4. The engaging portion 64 is fixed to the end of the rod 63 in the third direction D3.

As shown in FIG. 9, a slit 53a extending in the first direction D1 is formed at the end of the second transmission part 53 in the fourth direction D4. The rod 63 is inserted through the slit 53a in the third direction D3. The width of the engagement part 64 in the fifth direction D5 is greater than the width of the slit 53a in the fifth direction D5.

The second transmission part 53 is movable in the first direction D1 and the second direction D2 relative to the rod 63. On the other hand, the movement of the second transmission part 53 in the third direction D3 and the fourth direction D4 relative to the rod 63 is restricted.

As shown in FIG. 8, when the rod 63 extends in the third direction D3, the second transmission part 53 rises in the third direction D3 due to the biasing force of the second biasing part 62. In other words, the second transmission part 53 and the second rotating part 52 are engaged by narrowing the gap between them. As shown in FIG. 10, when the rod 63 contracts in the fourth direction D4, the second transmission part 53 descends in the fourth direction D4 against the biasing force of the second biasing part 62. In other words, the gap between the second transmission part 53 and the second rotating part 52 is widened to release the engagement between the second transmission part 53 and the second rotating part 52. In other words, the restricting part 60 restricts the rotation of the second rotating part 52. Therefore, the cooperation between the door 32 and the reflector 42 can be restricted with a small number of parts. In other words, the configuration can be simplified. As a result, the production cost can be reduced.

Next, the microwave radiator 71 will be described. The microwave radiator 71 radiates microwaves into the heating chamber 20. The microwave radiator 71 is, for example, a magnetron. The microwave radiator 71 is disposed at the end on the first direction D1 side in the center of the bottom wall portion 22 in the fourth direction D4 (downward direction) and the fifth direction D5 (width direction).

The microwave radiating section 71 includes a radiating antenna section 72. Microwaves are supplied to the radiating antenna section 72 from the microwave radiating section 71 via a waveguide 73. The radiating antenna section 72 is located on the bottom wall section 22 side of the heating chamber 20 of the bottom plate section 31.

Next, the control of the operation of the regulating unit 60 will be described. Figure 11 is a block diagram showing the calculation processing unit 90 of the cooking device 100.

The calculation processing unit 90 controls the change in the position of the reflector 42. The calculation processing unit 90 includes a processor such as a CPU (Central Processing Unit) and an MPU (Micro Processing Unit). The calculation processing unit 90 controls each element of the cooking device 100. As shown in FIG. 11, the calculation processing unit 90 is electrically connected to the mode change switch 81, the detection unit 82, and the regulation unit 60.

The mode changeover switch 81 is disposed, for example, at the end of the housing 10 in the second direction D2. The mode changeover switch 81 switches between a normal cooking mode and a high-speed cooking mode. In the normal cooking mode, only the microwave radiator 71 is used, and the heater 41 is not used. In the high-speed cooking mode, the microwave radiator 71 and the heater 41 are used in combination.

The detection unit 82 detects that an object to be cooked having a height dimension equal to or greater than the threshold has passed through the opening 25. The detection unit 82 is disposed in a position in the vicinity of the opening 25 of the side wall 23, at a position that is higher than the bottom wall 22 in the third direction D3 by the threshold. Specifically, the detection unit 82 is positioned on the third direction D3 side of the end of the reflector 42 in the first position S1 in the fourth direction D4. In other words, the detection unit 82 detects that an object to be cooked having a height dimension equal to or greater than the threshold is present in the heating chamber 20.

As shown in FIG. 11, the calculation processing unit 90 includes a control unit 91 and a determination unit 92.

The determination unit 92 determines whether the first condition is met when the normal cooking mode is selected by the mode changeover switch 81. The determination unit 92 determines whether the second condition is met when the detection unit 82 detects that an object to be cooked having a height dimension equal to or greater than the threshold value is present in the heating chamber 20.

When at least one of the first and second conditions is satisfied, the control unit 91 restricts the change of the reflector 42 to the first position S1. When the first condition is satisfied, the heater 41 is not activated, and the heat of the heater 41 does not escape through the opening 25. In other words, when only the microwave radiating unit 71 heats the food to be cooked, the restricting unit 60 restricts the rotation of the second rotating unit 52. Specifically, the restricting unit shortens the rod 63 of the plunger unit 61 to release the engagement between the second transmitting unit 53 and the second rotating unit 52. Therefore, in a situation where the position of the reflector 42 does not need to be changed, the operation of the reflector 42 can be omitted. As a result, the heat of the heater 41 escaping to the outside can be suppressed with minimal operation.

When the second condition is met, an object to be cooked having a height dimension equal to or greater than the threshold is present in the heating chamber 20. In other words, when an object to be cooked having a height dimension equal to or greater than the threshold is present in the retracted position P1, the change in the position of the reflector 42 can be restricted. As a result, interference between the reflector 42 and the object to be cooked can be avoided.

The above describes an embodiment of the present invention with reference to the drawings. However, the present invention is not limited to the above embodiment, and can be implemented in various forms without departing from the gist of the present invention. The drawings are mainly schematic, showing each component, for ease of understanding, and the thickness, length, number, spacing, etc. of each component shown in the drawings differ from the actual ones due to the convenience of creating the drawings. In addition, the material, shape, dimensions, etc. of each component shown in the above embodiment are merely examples, and are not particularly limited, and various modifications are possible without substantially departing from the configuration of the present invention.

The present invention provides a cooking device and has industrial applicability.

20 Heating chamber 21 Upper wall portion 25 Opening 32 Door 41 Heater 42 Reflector plate 50 Position changing portion 100 Cooking device S1 First position S2 Second position

Claims (6)

A heating chamber having an opening for inserting and removing food and an upper wall portion facing the food;
A heater disposed within the heating chamber;
a door that transmits visible light into the heating chamber through the opening and opens or closes the opening;
a reflector that reflects heat from the heater;
a posture changing unit for changing the posture of the reflector,
The attitude changing unit is
In response to the door closing the opening, the reflector changes to a first position facing the door,
The cooking appliance is configured such that, in response to the door opening the opening, the reflector changes to a second position in which it faces the upper wall portion. Further provided with a placement section on which the food to be cooked is placed,
The placement portion is
in a retracted position in response to closure of the opening;
In response to the opening of the opening, the device is positioned at a drawn-out position.
the retracted position indicates a position where the placement portion is accommodated in the heating chamber,
The cooking device according to claim 1 , wherein the drawn-out position indicates a position where the placement portion is drawn out from the heating chamber. The attitude changing unit is
A first rotating portion that is connected to the reflecting plate and rotates;
A second rotating portion that rotates in response to closing and opening of the opening;
The cooking device according to claim 2 , further comprising: a transmission part that transmits the rotation of the second rotating part to the first rotating part. The cooking device according to claim 2, wherein the position changing unit further includes a biasing unit that biases the reflector located on the door side toward the upper wall when the placement unit is in the pulled-out position. (Reflector operation limit)
The cooking device according to claim 3 , wherein the position changing portion further includes a restricting portion that restricts rotation of the second rotating portion. Further comprising a microwave radiating unit that radiates microwaves into the heating chamber,
The cooking device according to claim 5 , wherein the regulating portion regulates the rotation of the second rotating portion when only the microwave radiating portion heats the food to be cooked.

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