JP2005055044A - Cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cooker, fixing a case with high fixing strength. <P>SOLUTION: A gas cooking stove 1 includes a body case 2 and a glass top plate 3 covering the top face of the body case 2. A metal plate 19 is disposed on the back of the glass top plate 3. The metal plate 19 is provided with a case hole part 21 formed to open in a position for fitting a base plate case 25, and a bracket part 23 is formed on the hole edge of the case hole part 21. The base plate case 25 is fixed to the bracket part 23 with an adhesive 26 or the like. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a cooking device using a glass plate as a top plate (top plate).

  Conventionally, as this type of gas stove, for example, Patent Literature 1 discloses a gas stove in which an operation unit is provided on the front surface of a stove body to operate a gas burner. Since this gas stove has an operation part arranged on the front surface of the stove body, it is not affected by the heat from the gas burner, but in a so-called drop-in type gas stove in which the stove body is embedded in the opening of the counter top, the operation part Is located under the counter top, there arises a problem that the operability is poor.

  Therefore, for example, Patent Literature 2 discloses a gas stove in which an operation unit is provided on the top plate of the gas stove. However, although this gas stove improves the operability, for example, when a large pan is used, the operation portion is heated by the heat effect from the pan, resulting in a problem that it becomes difficult to operate and a problem that the operation portion is deformed. In addition, there is a problem that the operation unit feels in the way of cooking, or when a large pan is used, the pan collides with the operation unit, which causes an adverse effect on the ignition / thermal power control device in the stove body. . Moreover, it is necessary to provide a through-hole for exposing the operation portion on the top surface of the top plate, and there is a problem that the spillage enters the stove body from the through-hole.

In order to solve these problems, a cooking device has been developed in which an operator's operation is detected by detection means such as an optical sensor or a capacitive switch, and various operations such as point extinguishing and heating power adjustment are performed. This type of cooking device uses a glass plate as a top plate, and a detection means is arranged in the cooking device main body for each operation part for point-extinguishing and heating power adjustment. And it is the structure which operates a heating cooker by a detection means by holding a hand or a finger over the predetermined operation part according to point fire extinguishing and heating power adjustment from the upper part of a glass top plate.
Japanese Patent Laid-Open No. 10-89704 JP 59-186302 A

  However, this cooking device needs a case for holding detection means such as an optical sensor and display means for displaying an operation state. The detection means needs to be arranged on the back surface of the glass top as much as possible because of detection sensitivity. For this purpose, the case must be attached to the glass top. Therefore, it is conceivable that the case is fixed to the back surface of the glass top plate with an adhesive or the like, but the adhesive property of the adhesive to the glass top plate is not so high, and the fixing strength of the case is low in fixing with the adhesive It was happening.

  An object of the present invention is to provide a cooking device capable of fixing a case with high fixing strength.

  In order to solve the above problems, in the invention according to claim 1, the cooking device includes a cooking device body that houses a heat source, and a glass top plate that covers a surface of the cooking device body, and the glass ceiling. A case for holding at least one of detection means for detecting an operator's operation on the front surface side of the plate through the glass top plate and display means for displaying an operation state is provided on the back side of the glass top plate. And the metal plate which covers the back surface of the said glass top plate was provided, and the attaching part for attaching the said case was formed in the said metal plate.

  According to this invention, the case is fixed to the mounting portion provided on the metal plate. Here, for example, when a configuration is adopted in which a metal plate is directly fixed to a glass top plate using an adhesive, there arises a problem that sufficient fixing strength cannot be ensured due to an adhesive problem between the glass top plate and the adhesive. However, since the case is fixed using the attachment portion, which is a part of the metal plate, as the attachment destination, it is not necessary to use a configuration of an adhesive on the glass top plate, and the case can be fixed with high fixing strength.

  According to a second aspect of the present invention, in the first aspect of the present invention, the attachment portion is an attachment piece that protrudes from the back surface of the metal plate. According to this invention, in addition to the operation of the invention described in claim 1, the case can be easily aligned at the time of attachment, and the attachment work can be easily performed.

  According to a third aspect of the present invention, in the first aspect of the present invention, the attachment piece is a folded piece formed by bending a part of the metal plate. According to this invention, in addition to the operation of the invention described in claim 1, since the folded piece is integrally formed with the metal plate, the number of parts does not increase.

  According to a fourth aspect of the present invention, in the invention according to the third aspect, the folded piece is formed on the metal plate so that at least one of the detection means and the display means faces the back surface of the glass top plate. It is formed on the window edge of the formed transparent window. According to this invention, in addition to the operation of the invention according to claim 3, it is possible to use the folded piece folded when the transparent window is provided as the attachment portion of the case, and to effectively use the folded piece. It becomes possible.

  The invention according to claim 5 is the invention according to claim 4, wherein the transparent window is a case hole that allows the upper surface of the case to face the glass top plate, and the folded piece is the case hole. Is formed at the hole edge. According to the present invention, in addition to the operation of the invention according to the fourth aspect, the case is attached by being fitted inside the folded piece. Therefore, the case is positioned when fitted into the folded piece. Therefore, positioning can be performed more easily, and the case can be fixed more firmly.

  In the invention according to claim 6, in the invention according to any one of claims 1 to 5, the heat source is a gas burner, and the glass top plate has a burner opening at a position corresponding to the gas burner. Is formed. A burner hole is formed in the metal plate at a position corresponding to the burner opening. According to this invention, in addition to the effect | action of the invention as described in any one of Claims 1-5, it becomes possible to respond to the gas cooker which has a gas burner. In particular, the gas cooker tends to be heated to a high temperature due to the flame of the gas burner, but it is possible to make it difficult to transfer heat to the glass top plate by arranging a metal plate.

  In invention of Claim 7, in the invention as described in any one of Claims 1-6, the said metal plate has covered the back surface whole region of the said glass top plate. According to this invention, in addition to the effect | action of the invention as described in any one of Claims 1-6, since the inside of a heating cooker does not need to be seen with a metal plate, an external appearance is not impaired and a glass back surface is protected. It is also possible to do.

  According to the present invention, the case can be fixed with a high fixing strength because the case is fixed to the mounting portion made of a part of the metal plate.

Hereinafter, an embodiment of a heating cooker embodying the present invention will be described with reference to FIGS.
As shown in FIGS. 1 to 3, a gas stove 1 as a heating cooker includes a box-shaped main body case 2 as a cooker body whose upper surface is open, and a glass top plate 3 that closes the opening of the main body case 2. ing. As shown in FIG. 2, the gas stove 1 is a drop-in gas stove in which the main body case 2 is buried in the attachment hole 4 a of the counter top 4, and includes a flange portion 2 a positioned at the opening periphery of the main body case 2, and a glass top. The edge of the plate 3 is supported on the upper surface of the countertop 4.

  As shown in FIG. 3, the main body case 2 is provided with a pair of gas burners 5 and 6 as heat sources, and the gas burners 5 and 6 are annular flame burners in which the flame ports 5a and 6a face inward. A gas supply port 7 is disposed at the bottom of the main body case 2, and the gas supply port 7 is connected to the gas burners 5 and 6 through a gas pipe 8. The gas supply port 7 is connected to a main opening / closing valve 9 for interrupting the gas supply to the gas burners 5, 6, and the gas supply to each gas burner 5, 6 is interrupted on the output side of the main opening / closing valve 9. In addition, gas amount adjusting valves 10 and 11 for adjusting the gas supply amount are connected.

  As shown in FIG. 1 and FIG. 2, a glass plate having high heat resistance is used as the glass top plate 3, and as an example, crystallized glass, for example, “Seran” glass (“Seran” made by Schott, Germany) Registered trademark). A frame-like frame body 13 that supports the outer peripheral edge of the glass top plate 3 is disposed on the glass top plate 3. A pair of burner openings 14 are formed in the glass top plate 3 at positions corresponding to the gas burners 5 and 6, and five virtues 15 are attached to the periphery of the burner openings 14. Arranged above the gas burners 5 and 6 is a rectifying plate 5 b that collects the flame around the center and guides it upward from the burner opening 14.

  As shown in FIG. 3, a control box 16 is disposed on the bottom surface of the main body case 2 at a position on the front end side. The control box 16 has a control device (not shown) for controlling the main opening / closing valve 9, the gas amount adjusting valves 10, 11 and the like, and a memory for storing program data and temporary working data for operating the control device ( (Not shown) is implemented. A pair of igniters 17 and 18 are disposed on both sides of the control box 16 on the bottom surface of the main body case 2, and the igniters 17 and 18 respectively discharge the high voltage by the corresponding electrodes 17 a and 18 a to ignite the gas burners 5 and 6.

  As shown in FIGS. 1, 2, and 5, a metal plate 19 made of a plated steel plate is disposed on the back surface of the glass top plate 3. The metal plate 19 covers the entire back surface of the glass top plate 3, and the periphery thereof is supported by these members 12 and 13 by being sandwiched between the glass top plate 3 and the frame body 13. The metal plate 19 is formed with a pair of burner holes 20 at positions corresponding to the burner openings 14, and a long rectangular case hole 21 is formed as a through window at a position on the front end side. Further, as shown in FIGS. 7A and 7B, the metal plate 19 is provided with a rib 22 having a circular arc shape that protrudes on the opposite side to the glass top plate 3.

  As shown in FIGS. 4 and 5, the metal plate 19 is formed with a bracket portion 23 as an attachment portion (attachment piece and folding piece) by bending the hole edge of the case hole portion 21 downward. 23 is formed around the entire periphery of the hole of the case hole 21. A substrate case 25 is attached to the bracket portion 23 as a case for supporting a substrate 24 to which detection means and display means described later are attached. The substrate case 25 has a box shape with an opening on the lower side, and an outer surface thereof is fixed to the bracket portion 23 using an adhesive 26 such as silicon rubber. The case hole 21 functions to allow the detection means and display means on the substrate 24 to face the back surface of the glass top plate 3, and functions as positioning in the plane direction on the back surface of the glass top plate 3. It is attached to the part 23.

  As shown in FIGS. 5 and 6, the substrate 24 is attached to the inside of the substrate case 25 by a plurality of screws 27. As shown in FIG. 6, a plurality of non-contact type switches 28 to 30 as detection means are arranged at intervals in the horizontal direction on the front edge of the upper surface of the substrate 24. Specifically, the power switch 28 is a switch that cuts off the power source of the gas stove 1, and the operation switches 29 and 30 are switches that perform point-extinguishing and heating power adjustment of the gas burners 5 and 6. The operation switches 29 and 30 include point-extinguishing switches 29a and 30a, a pair of heating power raising switches 29b and 30b for adjusting the heating power, and heating power lowering switches 29c and 30c.

  The switches 28 to 30 are optical sensors each having a light emitting element 31a that emits infrared light and a light receiving element 31b that receives infrared light. The optical sensor can receive the infrared rays of the light emitting element 31a reflected by a finger or the like on the glass top plate 3 by the pair of light receiving elements 31b. Further, a plurality of display lamps 32 to 34 as display means made of, for example, light emitting diodes are disposed on the upper surface of the substrate 24 at positions behind the switches 28 to 30. The power display lamp 32 is a lamp that indicates whether the power is turned on, and the thermal power display lamps 33 and 34 are provided in five levels (the strongest and weakest) of the thermal power adjustment states (strong and weak) of the gas burners 5 and 6 (from the weakest to the strongest five). ).

  As shown in FIGS. 4 and 5, on the plate surface 25 a facing the glass top plate 3 in the substrate case 25, these correspond to the switches 28 to 30 and the display lamps 32 to 34 on the back surface of the glass top plate 3. An opening 35 is formed so as to face. As shown in FIGS. 4 to 6, the openings 35 a of the switches 28 to 30 have a peripheral wall 36 extending in the vertical direction. When the substrate 24 is attached to the substrate case 25, the switches 28 to 30 are separated by the peripheral wall 36. While being surrounded by the sides, the top portion faces the glass top plate 3 through the opening 35a. The glass top 3 is made of a material that can transmit the infrared rays of the switches 28 to 30 and the display light of the display lamps 32 to 34.

  As shown in FIG. 1, operation portions 37 a to 37 g are attached to the upper surface of the glass top plate 3 by printing or coloring. These operation units 37a to 37g are arranged at positions corresponding to the switches 28 to 30. The power operation unit 37a is used to cut off the power supply, the point fire extinguishing operation units 37b and 37c are used to turn off the gas burners 5 and 6, and the heating power adjustment operation unit. Reference numerals 37d to 37g denote operation units for adjusting the thermal power. Further, on the upper surface of the glass top plate 3, on both sides of the thermal display lamps 33 and 34, thermal display marks 38a to 38d are attached by printing or coloring.

  When these operation units 37a to 37g are operated, the infrared light emitted from the light emitting element 31a of the optical sensor is reflected by the operator's finger at the switches 28 to 30 of the operation unit selected and operated, and the reflected light Is detected by the light receiving element 31b of the same optical sensor. Here, the control device in the control box 16 is connected to the optical sensor via the wiring, and controls the main opening / closing valve 9 and the gas amount adjusting valves 10 and 11 based on the output signal from the optical sensor, and the display lamp. Display control of 33 and 34 is performed.

  Now, a metal plate 19 is provided on the back surface of the glass top plate 3, and a case hole 21 is formed in the metal plate 19. And the bracket part 23 was formed along the hole edge of the case hole part 21, and the board | substrate case 25 was fixed to the bracket part 23 using the adhesive agent 26. FIG. Therefore, the adhesiveness of the adhesive such as silicon rubber is higher in the metal plate 19 made of metal than the glass top plate 3, so that the adhesive 26 is used if the metal plate 19 is used as the attachment destination of the substrate case 25. Even if it exists, it becomes possible to attach the substrate case 25 with high fixing strength.

  Moreover, since the bracket part 23 which bent the metal plate 19 was used as the attachment destination of the board | substrate case 25, the adhesive surface of the board | substrate case 25 becomes the side surface. Therefore, the bonding surface extends in the moving direction (vertical direction) of the substrate case 25 due to its own weight, and the upper surface of the substrate case 25 described in the prior art is in a state where the bonding force is higher than in the case of the mounting surface. The difficulty of detaching the case 25 from the metal plate 19 is further ensured.

According to this embodiment, the following effects can be obtained.
(1) Since the substrate case 25 is fixed to the metal plate 19, particularly the bracket portion 23, it is not necessary to use a method of fixing the substrate case 25 to the glass top plate 3 using an adhesive, and the substrate case has a high fixing strength. 25 can be fixed.

(2) If the structure which attaches the board | substrate case 25 to the bracket part 23 is used, the position alignment in the case of attachment can be performed easily and attachment work can be performed easily.
(3) Since the bracket portion 23 is formed at the hole edge of the case hole portion 21, the bracket portion 23 can also be used as the formation of the case hole portion 21. Further, since the substrate case 25 is also configured to be inserted and attached into the bracket portion 23, positioning is completed simply by being inserted into the bracket portion 23, so that troublesome alignment is not required.

  (4) The gas-type gas stove 1 tends to become hot around the flame of the gas burners 5 and 6, but the heat of the gas burners 5 and 6 is hardly transmitted to the glass top plate 3 side by arranging the metal plate 19, The high temperature of the glass top plate 3 can be suppressed.

  (5) By disposing the metal plate 19 on the back surface of the glass top plate 3, the inside of the gas stove 1 is not seen, and the appearance is not impaired. Further, for example, even if the glass top plate 3 is broken, the metal plate 19 can also suppress scattering of the fragments to the lower side, and the back surface of the glass top plate 3 can be protected.

(6) Since the ribs 22 are formed on the metal plate 19, even if the metal plate 19 is thermally expanded, the ribs 22 are not acted on and the entire area is not changed, and the area change due to the thermal expansion can be suppressed.
In addition, this embodiment is not restricted to the above, You may change to the following aspects.

The attachment method of the substrate case 25 to the bracket portion 23 is not limited to the adhesive 26. For example, the substrate case 25 may be fixed using screws 41 as shown in FIG.
The attachment method of the substrate case 25 to the bracket portion 23 is not limited to the adhesive 26 and the screw 41. For example, as shown in FIG. 9, a protrusion 42 is formed on the outer surface of the bracket portion 23, a hole 43 is formed in the side wall of the substrate case 25, and the protrusion 42 is fitted into the hole 43 to form the substrate case. 25 may be fixed. Conversely, a hole may be provided in the bracket portion 23 and a protrusion may be provided in the substrate case 25.

The bracket portion 23 is not limited to being formed on the entire circumference, and may be provided only on two sides facing each other.
The through window is not limited to the hole shape, and may be a notch shape in which a pair of cuts are made from the edge of the metal plate 19 as shown in FIG.

  -The transparent window formed in the metal plate 19 is not limited to the structure opened by the same area as the upper surface of the substrate case 25. For example, a transparent window having a size that allows at least the switches 28 to 30 and the lamps 32 to 34 to face the glass top plate 3 is formed, and a bracket portion for attaching the substrate case 25 is formed by bending the window edge. Also good.

  The mounting part of the substrate case 25 is not limited to the bracket part 23. For example, as shown in FIG. 11, the board case 25 may be attached by forming a plurality of screw holes (attachment portions) 45 in the metal plate 19 and screwing screws 46 there.

  The metal plate 19 is not limited to covering the entire back surface of the glass top plate 3, and may be only a part if the device inside the stove becomes difficult to see. Moreover, the attachment structure of the metal plate 19 is not limited to the configuration in which the outer edge of the metal plate 19 is sandwiched between the glass plate 12 and the frame body 13, and may be attached to the frame body 13 using screws, for example.

  As a method for suppressing heat conduction to the glass top plate 3, for example, a plurality of vent holes 47 are formed in the metal plate 19 as shown by a two-dot chain line in FIG. By generating an air flow (convection) between the glass top plate 3 and the metal plate 19, heat conduction to the glass top plate 3 may be suppressed. Further, even if the metal plate 19 is heated by the heat from the gas burners 5 and 6 and the thermal expansion occurs, the ventilation hole acts to make it difficult for the entire area to change, so the area change due to thermal expansion (area expansion) Can be suppressed.

  The bracket portion 23 is not limited to being integrally formed with the metal plate 19, and an annular frame piece as a mounting piece that is a separate body from the metal plate 19 is fixed to the case hole portion 21 of the metal plate 19. 23 may be formed.

The gas burners 5 and 6 are not limited to the internal flame type, but may be an external flame type with the flame outlet facing outward.
-The number of gas burners 5 and 6 is not necessarily two, and may be other than this.
-The gas stove 1 does not need to have the frame 13. In this case, the metal plate 19 is fixed to the gas stove 1 by being sandwiched between the glass top plate 3 and the main body case 2.

  The optical sensor is not limited to an element that emits and receives infrared light, and may be an element that can project and receive visible light, for example. The detection means is not limited to the optical sensor, and for example, a capacitance switch that operates by changing the capacitance on the top plate may be used.

The metal plate 19 is not limited to a plated steel plate, and other materials such as a stainless steel plate may be used.
The heating cooker is not limited to a gas type, and may be an electromagnetic type that generates current by flowing an electric current through a coil to generate electromagnetic force, and heats the pot by heat generated by the electromagnetic force. The cooking device is not limited to a gas type or an electromagnetic type, and may be a chrome heater type cooking device.

The top view of the gas stove in one Embodiment. The sectional side view of a gas stove. The top view which shows the inside of a gas stove. The model perspective view which shows the attachment part of a substrate case. The expanded sectional view which shows the attachment part of a substrate case. The plane sectional view showing the inside of a substrate case. (A) is a top view of a metal plate, (b) is the sectional drawing. The expanded sectional view which shows the attachment part of the board | substrate case in another example. The expanded sectional view which similarly shows the attachment part of a substrate case. The model perspective view of the metal plate which attached the board | substrate case. The expanded sectional view which shows the attachment part of a substrate case.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Gas stove as heating cooker, 2 ... Main body case as cooker body, 3 ... Glass top plate, 5, 6 ... Gas burner as heat source, 14 ... Burner opening, 19 ... Metal plate, 20 ... Burner hole , 21 ... a case hole as a transparent window, 23 ... a bracket part as an attachment part (attachment piece, cut-and-raised piece), 25 ... a substrate case as a case, 28 to 30 ... a non-contact type switch as a detection means, 32 to 34: Display lamps as display means.

Claims (7)

Detection means and operation comprising a cooker body containing a heat source and a glass top plate covering the surface of the cooker body, and detecting an operator's operation on the surface side of the glass top plate via the glass top plate In the heating cooker provided with a case for holding at least one of the display means for displaying the state on the back side of the glass top plate,
A heating cooker characterized in that a metal plate that covers the back surface of the glass top plate is provided, and an attachment portion for attaching the case is formed on the metal plate. The cooking device according to claim 1, wherein the attachment portion is an attachment piece protruding from a back surface of the metal plate. The cooking device according to claim 2, wherein the attachment piece is a folded piece formed by folding a part of the metal plate. The folded piece is formed on a window edge of a transparent window formed on the metal plate so that at least one of the detection means and the display means faces the back surface of the glass top plate. The cooking device according to claim 3. The said transparent window is a case hole which makes the upper surface of the said case face the glass top plate side, and the said folding piece is formed in the hole edge of the said case hole. Cooking device. The heat source is a gas burner, the glass top plate has a burner opening formed at a position corresponding to the gas burner, and the metal plate has a burner hole formed at a position corresponding to the burner opening. The heating cooker according to any one of claims 1 to 5, wherein: The said metal plate covers the whole back surface area of the said glass top plate, The heating cooker as described in any one of Claims 1-6 characterized by the above-mentioned.

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