JP4450826B2 - Induction heating cooker - Google Patents

Description

  The present invention relates to an induction heating cooker provided with a display unit, and more particularly to an induction heating cooker provided with a display unit on the lower side of a glass top.

  2. Description of the Related Art Conventionally, there is an induction heating cooker including a display unit such as a liquid crystal display device that displays an operation state, setting contents during operation, a trouble state, and the like. As such, only the operation key (operation part) that is frequently used is provided on the front surface (front side surface) of the glass top where the object to be heated such as a pan is placed, and the front side surface part of the induction heating cooker body An induction heating cooker has been proposed in which an openable and retractable display unit is provided (see, for example, Patent Document 1).

  In addition, an induction heating cooker has been proposed in which a display unit is provided below the glass top (see, for example, Patent Document 2). This induction heating cooker can visually observe a display part through a glass top. Usually, a user who uses an induction heating cooker stands immediately before the induction heating cooker and operates the induction heating cooker. Therefore, since the user can visually check the display unit while cooking, the convenience of the user is improved.

Japanese Patent Laying-Open No. 2005-93446 (page 3, FIG. 1) JP 2003-14239 A (page 3-4, FIG. 3)

  The induction heating cooker described in Patent Document 1 separates an operation unit and a display unit that are frequently used. However, in such a configuration, every time the display unit is confirmed, the openable / retractable display unit must be pulled out to the front side, which causes a problem of requiring an extra operation from the user. In addition, since the display unit is made openable and retractable, a space is required in front of the induction heating cooker body, and there is a problem that the size of the roaster is limited or the induction heating cooker is enlarged. Furthermore, it is possible to display the operation unit in a lit state, but it is possible to reduce the influence of heat by surrounding the operation unit with a part of the top frame, so that the heat measures for the operation unit have been positively realized. There wasn't.

  In the induction heating cooker described in Patent Document 2, the display unit is provided in the cooling air passage on the upstream side of the cooling fan, and the display unit is cooled by the outside air taken in by the cooling fan. That is, the ambient temperature of the display unit is set to a low temperature by using a cooling fan for cooling the induction heating coil. However, such a configuration has an excessive pressure loss (load) of the cooling fan. In addition, there is a high possibility that a short cycle occurs inside the housing, and there is a problem that both the display unit and the induction heating coil cannot be efficiently cooled.

  This invention was made in order to solve the above subjects, and provides the induction heating cooking appliance which can cool a display part effectively while arrange | positioning a display part in a position where a user can see easily. It is.

An induction heating cooker according to the present invention includes a casing having an opening in the front, a glass top disposed on the upper side of the casing, on which an object to be heated is placed, and provided in the casing. A display unit disposed on a lower side of the display unit, a mounting component board provided on the lower side of the display unit for mounting a mounting component, and the position of the display unit in the vicinity of the opening of the housing And a fan for blowing air for cooling the display unit, and an air passage through which air flows from the fan is formed between the display unit and the mounting component substrate. It is characterized by that.

  Since the induction heating cooker according to the present invention is provided with a fan for cooling the display unit disposed below the glass top in the vicinity of the opening formed in the front of the casing, It is possible to effectively cool the display portion that is easily affected by the heat generated by the induction heating coil.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing an induction heating cooker 100 according to an embodiment of the present invention. FIG. 2 is a longitudinal sectional view showing a sectional configuration of the induction heating cooker 100. Based on FIG.1 and FIG.2, the structure of the induction heating cooking appliance 100 is demonstrated. This induction heating cooker 100 has a built-in type (system kitchen integrated type) in which a cooking pan mounting part by induction heating is provided in two on the left and right, and a cooking pot mounting part by radiant heater (RH) heating is provided in the back center. The case of an IH cooking heater will be described as an example. In addition, in the following drawings including FIG. 1, the relationship of the size of each component may be different from the actual one.

  As shown in FIG. 1, the induction heating cooker 100 includes a lower housing 10, an upper housing 20, and a glass top 30. The lower housing 10 is provided with a roaster 11 for grilling fish and the like. The roaster 11 is pulled out to the near side of the lower housing 10. The upper housing 10 is equipped with an induction heating coil, a cooling fan, a control board, and the like. Further, the upper casing 20 includes a display unit 40 for displaying the operation state of the induction heating cooker 100, the setting contents during operation, the trouble state, and the like, and a fan for cooling the display unit 40. 50 (see FIG. 2).

  1 and 2 show an example in which a partition is provided in one housing and separated into a lower housing 10 and an upper housing 20, but the present invention is not limited to this. Absent. For example, the lower housing 10 and the upper housing 20 may be configured separately and the upper housing 20 may be placed on the lower housing 10. In addition, the case according to the present invention indicates the upper case 20. Further, the type of the fan 50 is not particularly limited. For example, the fan 50 may be an axial fan or the like.

  Here, each device mounted in the upper housing 20 will be briefly described. The induction heating coil is placed on a coil base and heats an object to be heated. That is, in the induction heating coil, eddy current is generated in the heated object placed on the upper side of the induction heating coil via the glass top 30 by the magnetic lines generated by the current, and the heated object itself generates heat. Yes. The coil base is configured to place and hold an induction heating coil. The coil base is preferably provided with a ferrite for preventing the magnetic field lines generated from the induction heating coil from flowing downward, and a temperature sensor for detecting the temperature state of the object to be heated.

  The cooling fan particularly blows air for cooling the induction heating coil and the inverter board. For example, the cooling fan may be composed of a sirocco fan or a blower fan. Moreover, you may make it provide a duct under the coil base for cooling an induction heating coil effectively. The radial heater 60 is supplied with AC power of a normal commercial frequency, and the heater itself generates heat, so that the object to be heated is heated by the radiant heat. The control means controls the induction heating coil and the radiant heater 60 based on an instruction from the user. The control board controls the rotation of the cooling fan and the fan 50 based on the detected temperature from a temperature sensor (not shown).

  The glass top 30 is a top plate disposed on the upper surface side of the upper housing 20 and is made of heat-resistant glass or the like, on which an object to be heated such as a pan is placed. Three pan mounting portions 31 are formed on the upper surface side of the glass top 30. This pan mounting part 31 shows the position corresponding to the heating means (the induction heating coil (not shown) and the radiant heater 60) mounted on the upper casing 20, and is a guideline for placing the object to be heated. It has become. For example, an induction heating coil is placed at a position corresponding to the front (front side) left and right pan mounting portions 31 of the glass top 30, and a position corresponding to the pan mounting portion 31 at the rear (back side) center of the glass top 30. It is preferable to mount a radiant heater 60 and use it as a guide for the position of the heating means.

  The glass top 30 is configured so that the outer peripheral portion is covered with a frame 32. An intake / exhaust port 33 for intake / exhaust air circulated in the upper housing 20 is formed behind the frame 32. In addition, in FIG. 1, although the case where the pan mounting part 31 is formed in the glass top 30 is shown as an example, it is not limited to this, The pan mounting part 31 is formed in the glass top 30 It does not have to be. Moreover, although the case where the three pan mounting parts 31 are formed in the glass top 30 is shown as an example, the number of the pan mounting parts 31 is not specifically limited. Furthermore, although the case where the intake / exhaust port 34 is formed in the frame 32 is shown as an example, the present invention is not limited to this. For example, an intake / exhaust port may be formed on the rear rear surface of the lower housing 10 or the upper housing 20.

  The display unit 40 is disposed on the front side (front side) of the upper housing 20 and on the lower side of the glass top 30 so as to be visible through the glass top 30. The glass top 30 may be composed of a liquid crystal display device provided with an electrostatic switch using a transparent conductive film. If it does so, the instruction | indication from a user can be received via the display part 40, and a user's convenience improves. Note that an operation unit may be provided separately from the display unit 40. For example, the operation unit may be provided using a space in front of the frame 32.

  Here, cooling of the display part 40 is demonstrated based on FIG. In FIG. 2, the air flow is indicated by arrows. An opening 21 is formed at the front center of the upper housing 20, and a fan 50 for cooling the display unit 40 is disposed in the vicinity of the opening 21 and in front of the display unit 40. That is, the air taken into the upper housing 20 from the opening 21 by the fan 50 passes through the lower side of the display unit 40 and cools the lower periphery of the display unit 40.

  The display unit 40 is placed on the display substrate 42 and disposed below the glass top 30. The upper housing 20 is mounted with a mounting component 25 including a power source for supplying high-frequency power to the induction heating coil, a control unit for controlling the induction heating coil, the radiant heater 60, the fan 50, and the like. Mounting component substrate 24 is provided. The mounting component substrate 24 is disposed on the bottom surface on the front side of the upper housing 20. Then, by arranging the fan 50 between the display substrate 42 and the mounting component substrate 24, the air path 22 is formed between the display substrate 42 and the mounting component substrate 24. That is, the lower periphery of the display unit 40 is cooled by the air flowing through the air passage 22.

  By setting the static pressure characteristic of the fan 50 higher than the pressure in the vicinity of the display unit 40 in the upper housing 20, the air taken in by the fan 50 can be guided to the air path 22. The air taken into the air passage 22 cools the mounting component 25 mounted on the downstream side of the air passage 22 and behind the display unit 40, and flows behind the upper housing 20. Yes. Since the mounting component 25 has a predetermined height, the air that has flowed through the air passage 22 passes through the upper side of the mounting component 25. Further, a guide wall for guiding the air that has passed through the air passage 22 to the back side of the glass top 30 may be formed behind the mounting component 25.

  That is, the air flowing above the mounting component 25 is guided to the front side of the radiant heater 60, and cools the back surface of the glass top 30 in front of the radiant heater 60. Thereafter, the air is guided to the lower side of the radiant heater 60 and is exhausted from the upper housing 20. Therefore, in the induction heating cooker 100, the air taken in by the fan 50 is used not only for cooling the display unit 40 but also for cooling the back surface of the glass top 30 on the front side of the mounting component 25 and the radiant heater 60. Can be done.

  FIG. 3 is an exploded perspective view showing an installation example of the display unit 40. An installation example of the display unit 40 will be described with reference to FIG. As described with reference to FIG. 2, the display unit 40 is disposed below the glass top 30. The outer periphery of the display unit 40 is covered with a cover 41. That is, by covering the display unit 40 with the cover 41, it is made difficult to be affected by heat generated from an induction heating coil or the like (not shown). Further, by covering the outer peripheral portion of the display unit 40 with the cover 41, the display surface of the display unit 40 is not brought into close contact with the glass top 30. That is, the display unit 40 is protected from the heat transmitted from the glass top 30. Therefore, the cover 41 protects the display unit 40 from heat from the side and from above.

  FIG. 4 is an enlarged perspective view showing a state in which the vent hole 44 is formed on the side surface of the cover 41. As shown in FIG. 4, if vent holes 44 are formed on both side surfaces (the front and back surfaces) of the cover 41, air can be sent from the vent holes 44 to the vicinity of the lower side of the display unit 40. The display unit 40 can be effectively cooled. In addition, the arrow shown in FIG. 4 represents the flow of air. FIG. 4 also shows the case where the Peltier element 52 is provided near the outside of the vent hole 44.

  The Peltier element 52 is a semiconductor element that can control heat generation and heat absorption by an electric current, and is characterized by a structure in which two metal plates are bonded together. And by flowing an electric current through the joint surface of a metal plate, the Peltier effect is generated, and heat generation and heat absorption are generated at each joint surface. That is, the amount of heat moves from one metal plate to the other metal plate. Therefore, by installing the heat absorbing surface of the Peltier element 52 in the vicinity of the display unit 40 (here, in the vicinity of the outside of the vent hole 44), the air for cooling the display unit 40 can be further cooled.

  In addition, if a sealing member is provided between the cover 41 and the glass top 30, the display part 40 can be more effectively protected from ambient heat. Further, the material of the seal member is not particularly limited, and any material that has heat resistance and can increase the adhesion between the cover 41 and the glass top 30 may be used. For example, the sealing member may be made of heat-resistant sponge, epoxy resin, silicon rubber, or the like.

  The display unit 40 whose periphery is covered with the cover 41 is placed on the display substrate 42. The display substrate 42 is provided with a substrate opening 46 having an opening. The substrate opening 46 is formed at a position corresponding to the display unit 40. That is, by forming the substrate opening 46 in the display substrate 42, the display unit 40 can be effectively cooled from below. The size of the substrate opening 46 is not particularly limited. For example, the substrate opening 46 may have the same size as the cross-sectional area of the display unit 40 or may be smaller than the cross-sectional area of the display unit 40.

  Further, the display substrate 42 is fixed to the substrate holder 43. That is, the display substrate 42 is fixed by fitting the display substrate 42 into the substrate holder 43. And it is good to fasten display part 40 and substrate holder 43 which were laid in display board 42 using fastening parts, such as a screw. The substrate holder 43 is also provided with a holder opening 47 having an opening. The holder opening 47 is formed at a position corresponding to the substrate opening 46. That is, the duct 48 is formed by the holder opening 47 and the substrate opening 46. Therefore, air is guided to the lower vicinity of the display unit 40 by the duct 48, and the display unit 40 can be cooled more effectively.

FIG. 5 is an enlarged longitudinal sectional view showing the sectional configuration of the induction heating cooker 100 in an enlarged manner. The substrate holder 43 and the duct 48 will be described in detail based on FIG. FIG. 5 shows an example in which a guide 49 is provided behind the holder opening 47 of the substrate holder 43 to facilitate air introduction into the duct 48. The guide 49 has a notch of a predetermined length so that both sides of the holder opening 47 extend rearward, and the portion of the holder opening 47 into which the notch is bent is bent downward. It may be formed so as to protrude into the air passage 22. Further, as shown in FIG. 5, the guide 49 may have a curved shape so that the air flow direction from the fan 50 is directed upward in order to easily guide air.

  As described with reference to FIG. 3, the display unit 40 is placed on the display substrate 42, the display substrate 42 is fixed to the substrate holder 43, and a duct 48 is formed by the substrate opening 46 and the holder opening 47. Yes. A guide 49 is formed in the holder opening 47 of the substrate holder 43. With such a configuration, the air taken into the fan 50 and flowing in the air passage 22 is easily guided to the lower vicinity of the display unit 40 via the guide 49 and the duct 48.

  In addition, although the case where the guide 49 was formed by bending the back side portion of the holder opening 47 downward was described as an example, the present invention is not limited to this. For example, the guide 49 may be formed of a member different from the substrate holder 43 and attached to the holder opening 47 of the substrate holder 43. Further, the size of the guide 49 is not particularly limited. For example, what is necessary is just to determine by the magnitude | size of the air path 22, the ventilation capability of the fan 50, the magnitude | size of the holder opening part 47, etc.

  FIG. 6 is an enlarged vertical cross-sectional view showing an enlarged state in which the fan 50 is inclined. A case where the fan 50 is tilted will be described with reference to FIG. As shown in FIG. 6, if the fan 50 is inclined at an angle α °, the air taken in by the fan 50 can be raised in the air traveling direction. That is, more air can be fed into the duct 48 formed by the substrate opening 46 and the holder opening 47. Therefore, the display unit 40 can be further effectively cooled. Note that the angle α ° is not particularly limited, and the angle α ° may be determined in consideration of the positions of the opening 21 and the display unit 40.

  FIG. 7 is an enlarged cross-sectional view showing a state where the ventilation path 51 is provided. Based on FIG. 7, the case where the ventilation path 51 is provided is demonstrated. As shown in FIG. 7, the ventilation path 51 is provided in a duct 48 formed by the substrate opening 46 and the holder opening 47. That is, the ventilation path 51 serves to prevent air leakage from the duct 48 and reliably guide the air to the lower side of the display unit 40. Therefore, even if the guide 49 illustrated in FIGS. 5 and 6 is not provided, the air from the fan 50 can be reliably supplied to the lower side of the display unit 40.

  In addition, the fan 50 may be inclined as shown in FIG. If it does so, more air can be sent in in the ventilation path 51, and also the display part 40 can be cooled more effectively. The ventilation path 51 may be formed integrally with the display substrate 42 and the substrate holder 43, or may be formed separately and attached. Moreover, the material which comprises the ventilation path 51 is not specifically limited, For example, it is good to comprise a heat resistant plastic etc. as a material.

  As described above, the display unit 40 can be directly cooled by providing the fan 50 in the vicinity of the opening 25 in the upper housing 20. Moreover, since the display part 40 can be cooled more effectively by adding the structure demonstrated in each figure, it can prevent that the display part 40 breaks down under the influence of heat. Therefore, the induction heating cooking appliance 100 with high reliability can be provided by reducing the failure of the display unit 40.

  FIG. 8 is a perspective view showing the structure of the display substrate 42a. Based on FIG. 8, the structure of the display substrate 42a will be described. FIG. 8 shows a longitudinal section of the substrate holder 43, the display substrate 42 a, the display unit 40, and the cover 41 at the vertical center line of the fan 50. Further, as shown in FIG. 8, a light emitting display unit 45 is provided on the display substrate 42a. As shown in FIG. 8, the display substrate 42 a is not formed with the substrate opening 46 like the display substrate 42.

  The display substrate 42 a is disposed near the center at the height of the fan 50. When the display substrate 42a is arranged at such a position, more cooling air can be guided to the lower vicinity of the display unit 40 by arranging the display substrate 42a at an inclination. Further, when it is necessary to dispose a part with a height on the display substrate 42a, it can be mounted on this portion using the front side of the display substrate 42a. Therefore, it is possible to arrange a relatively high component on the display substrate 42a. The tilt angle of the display substrate 42a is not particularly limited, and the tilt angle may be determined in consideration of the size of the display unit 40, the ability of the fan 50, and the like.

The light-emitting display portion 45 that has been provided on the display substrate 42a, by the light emission, has a function of indicating the operation state of the induction heating cooker 100. By providing the light emitting display unit 45 on the inclined display substrate 42a, the user can see the light emitting display unit 45 in parallel with the line of sight of the induction heating cooker 100. Therefore, the visibility of the user is improved. The number, color, and specifications (for example, blinking display or lighting display) of the light emitting display unit 45 are not particularly limited.

  The embodiment does not show a case where something is provided below or in the vicinity of the display unit 40, but fins may be provided below the display unit 40. In this way, the air taken into the fan 50 passes through the fins, so that the display unit 40 can be more effectively cooled. In the embodiment, the case where the Peltier element 52 is installed in the vicinity of the outside of the vent hole 44 has been described as an example. However, the present invention is not limited to this. The element 52 may be provided. A combination of the fin and the Peltier element 52 may be provided.

It is a perspective view which shows the induction heating cooking appliance which concerns on embodiment of this invention. It is a longitudinal cross-sectional view which shows the cross-sectional structure of an induction heating cooking appliance. It is a disassembled perspective view which shows the example of installation of a display part. It is a perspective view which expands and shows the state in which the vent hole was formed in the side surface of a cover. It is an expanded vertical sectional view which expands and shows the cross-sectional structure of an induction heating cooking appliance. It is an expanded vertical sectional view which expands and shows the state which carried out the inclination arrangement of the fan. It is an expanded sectional view which expands and shows the state which provided the ventilation path. It is a perspective view which shows the structure of a display substrate.

Explanation of symbols

  10 Lower housing, 11 Roaster, 20 Upper housing, 21 Opening, 22 Air passage, 24 Mounting component board, 25 Mounting component, 30 Glass top, 31 Pan mounting portion, 32 Frame, 33 Air intake / exhaust port, 40 Display , 41 Cover, 42 Display board, 42a Display board, 43 Substrate holder, 44 Vent hole, 45 Light emitting display part, 46 Substrate opening, 47 Holder opening, 48 Duct, 49 Guide, 50 Fan, 51 Ventilation path, 52 Peltier element, 60 radiant heater, 100 induction heating cooker.

Claims (17)

A housing having an opening in the front;
A glass top that is disposed on the upper side of the housing and on which an object to be heated is placed;
A display unit provided in the housing and disposed below the glass top;
A mounting component board provided on the lower side of the display unit for mounting mounting components;
A fan that is provided near the opening of the housing and in front of the position of the display unit, and blows air that cools the display unit,
An induction heating cooker , wherein an air path through which air flows from the fan is formed between the display unit and the mounting component substrate . The induction heating cooker according to claim 1, wherein the display unit is a liquid crystal display device. The fan is inclined to the lower side of the display unit.
The induction heating cooker according to claim 1 or 2, characterized in that. Placing the display unit, and providing a display substrate electrically connected to the display unit;
The display substrate is
4. The fan according to claim 1 , wherein the fan is arranged near the center of the height of the fan, and is inclined so as to guide air blown from the fan to the lower side of the display unit . The induction heating cooker in any one. The induction heating cooker according to claim 4, wherein a light-emitting display unit that indicates an operation state by emitting light is provided on the display substrate. Providing a display substrate on which the display unit is placed;
The induction heating cooker according to any one of claims 1 to 3, wherein a substrate opening having a position corresponding to the display portion is provided in the display substrate. A substrate holder for fixing the display substrate is provided,
The induction heating cooker according to claim 6, wherein a holder opening having a position corresponding to the substrate opening is provided in the substrate holder. The air blown from the fan is
The induction heating according to claim 7, wherein the substrate opening portion of the display substrate and the holder opening portion of the substrate holder are supplied to the lower side of the display portion by a duct formed in communication. Cooking device. The induction heating cooker according to claim 8, wherein a guide for guiding the air blown from the fan into the duct is provided behind the holder opening. Behind the mounting component board,
The induction heating cooker according to any one of claims 1 to 9, further comprising a guide wall for guiding air blown from the fan to the back side of the glass top . A radial heater for heating an object to be heated is provided in the housing,
The induction heating cooker according to claim 10, wherein the radiant heater is disposed on the rear side of the guide wall. The induction heating cooker according to any one of claims 1 to 11, wherein an outer peripheral portion of the display unit is covered with a cover . The induction heating cooker according to claim 12, wherein a vent hole is formed on a side surface of the cover . The induction heating cooker according to claim 13, wherein a Peltier element is provided outside the vent hole . The induction heating cooker according to any one of claims 12 to 14, wherein a seal member is provided between the cover and the glass top . The static pressure of the fan,
The induction heating cooker according to any one of claims 1 to 15, wherein the pressure is higher than the pressure in the vicinity of the display unit in the housing. The induction heating cooker according to any one of claims 1 to 16, wherein fins are arranged below the display unit .

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