JP5182233B2 - Cooker - Google Patents

Description

  The present invention relates to a cooling configuration of an internal member in a heating cooker.

  Conventionally, this type of cooking device has a configuration in which a cooling fan is disposed in front of a substrate circuit inside the main body, and is sucked from the front of the main body and exhausted from the rear (for example, see Patent Document 1). . This configuration has the advantage of making it difficult to inhale air that has been heated during cooking, hot and cold smoke during cooking, steam, and cooking juice. In addition, there has been a case where an operation switch frequently used is arranged on the top of the top plate by a capacitive touch switch to improve usability (for example, see Patent Document 2).

JP 2006-210146 A JP 2007-134114 A

  However, if the cooling fan is arranged in front of the substrate circuit inside the main body and sucked from the front and exhausted from the rear using the conventional configuration, and the touch switch is used in front of the top plate, the cooling fan is touched. Since it is difficult to arrange in front of the switch, the cooling air is not blown to the touch switch part, and the temperature of the operation board and other parts that detect and control the signals on the top panel and the touch switch rises. When touched from time to time, there is a problem that it may feel hot or cause a failure of the operation board. Further, when another fan for the operation board is provided, or when a duct is provided by another component to form a ventilation path, there are problems in terms of cost and assemblability.

  The present invention solves the above-described problems, and is configured so that the circuit board, the top surface operation unit, and the operation board inside the main body can be cooled together without newly adding parts, and can be comfortably operated and can be internally operated. An object of the present invention is to provide a cooking device with high durability of parts.

  In order to solve the above-described conventional problems, a heating cooker according to the present invention is provided with a main body outer shell constituting an outer shell, a top plate for placing an object to be heated provided on the upper portion of the main body, and a lower portion of the top plate. A heat source for heating the object to be heated, an intake port provided at the front or bottom of the outer surface of the outer shell, or both, and air outside the outer shell through the intake port to blow air to a heat generating part inside the main body A fan that is forcedly cooled, a fan case that is configured in the vicinity of the fan and has a fan inlet and a fan outlet, and the heat source that is provided downstream of the cooling air blown from the fan outlet by the fan A circuit board that controls the output of the circuit board, a board base that holds the circuit board, and a board base that is provided between the heat source and the circuit board to form a ventilation path on the circuit board A bar, an exhaust port provided as an outlet for cooling air provided at the upper rear part of the outer shell of the main body, and a ceiling by a capacitive touch switch that is provided in front of the main body substantially on the same plane as the top plate and controls heating means. A surface operation unit, a top surface operation board that detects and processes a signal of the touch switch provided near the bottom of the top surface operation unit, and a top surface operation substrate case that holds the top surface operation substrate, Forming a duct for blowing cooling air from the fan into the top surface operation board case by a part of at least one of the fan case, the substrate base cover, and the top surface operation substrate case; It is a thing.

  Accordingly, cooling air is sent from the fan to the periphery of the top surface operation unit and the top surface operation board provided in front of the main body from the fan outlet through the configured duct to cool the top surface operation part and the top surface operation board. be able to. This prevents burns and discomfort due to heat during operation, and provides a safe and comfortable cooking device. Moreover, since the temperature rise of a touch switch or a top surface operation board | substrate can be suppressed, the failure by a thermal destruction can be prevented and the cooker which is rich in durability can be provided. Furthermore, by configuring the duct with conventional components, there is no need to add new components, and an increase in material costs and assembly man-hours can be suppressed.

  The heating cooker of the present invention is configured to take in air from the air inlet provided on the front or bottom of the outer surface of the outer surface or both, and also when operating with the operation unit provided in front of the top surface of the top plate. Providing a cooking device that can cool the head and the top operation board without adding new parts, is easy to operate and has high durability of internal parts while suppressing an increase in material costs and assembly man-hours Can do.

The perspective schematic diagram of the heating cooker in Embodiment 1 of this invention. Sectional drawing which shows the structure inside the heating cooker in Embodiment 1 of this invention. Configuration diagram around the fan according to the first embodiment of the present invention Sectional drawing of the duct a in Embodiment 1 of this invention Sectional drawing of the duct b in Embodiment 1 of this invention

1st invention, the main body outer shell which comprises an outer shell, the top plate which mounts the to-be-heated material provided in the main body upper part, the heat source which heats the to-be-heated material provided below the top plate, An air inlet provided on the front or bottom or both of the outer surface of the outer shell, a fan that sucks air outside the outer shell through the air inlet and blows it to a heat generation part inside the main body and forcibly cools, and the vicinity of the fan A fan case having a fan inlet and a fan outlet, a circuit board for controlling an output of the heat source provided downstream of cooling air blown from the fan outlet by the fan, and the circuit board A substrate base that holds the substrate, a substrate base cover that is provided between the heat source and the circuit board and forms a ventilation path on the circuit board; An exhaust port serving as an outlet for the cooling air, a top surface operation unit by a capacitive touch switch that is provided in front of the main body substantially on the same surface as the top plate and controls the heating means, and below the top surface operation unit A top surface operation board for detecting and processing a signal of the touch switch provided in the vicinity, and a top surface operation board case for holding the top surface operation board, the fan case, the substrate base cover, and the top surface operation A duct that blows cooling air from the fan into the top surface operation board case is configured by at least one part of the board case. As a result, the cooling air is sent from the fan to the periphery of the touch switch on the near side of the fan exhaust port, and the top operation section, the touch switch, and the control board can be cooled. Moreover, it is not necessary to add a new part by comprising a duct with a part of conventional parts. Further, the cooling air that has passed through the duct can be allowed to flow from the end of the substrate case to effectively cool the substrate, or air can be applied to the back surface of the top surface operation unit to cool the substrate.

  In a second aspect of the present invention, the duct connecting portions of the respective parts constituting the duct overlap each other. As a result, the airtightness of the duct is increased and the wind is prevented from leaking, so that it can be efficiently cooled.

In the third aspect of the invention, in particular, the overlapping of the duct connecting portions of the parts constituting the duct of the second aspect is configured such that the windward side is configured on the duct inner surface side and the leeward side is configured on the duct outer surface side and fitted. It is what. Thus, it is possible to configure a smooth duct that does not easily allow the wind to escape from the gap and does not hinder the flow of the wind, and the wind leakage can be further suppressed.

  4th invention makes it the structure which inclines all or one part of the wall surface of the said duct toward the top plate direction from the said fan. As a result, the cooling air can smoothly flow into the operation board case, so that the turbulent flow of the wind can be prevented and the pressure loss of the wind can be suppressed.

In addition , the top surface operation board exhaust port is provided downstream from the duct connection portion of the top surface operation board case. As a result, a wind outlet is created, and the top surface operation board case is provided with an intake portion and an exhaust portion, and the flow of wind can be adjusted and the flow velocity can be increased. In addition, the heat that flows from the top surface operation board exhaust port can further cool the heat source, its peripheral components, the left side shell, and the like.

Also , it has a plurality of fan outlets, and at least one of them blows cooling air to the substantially rear circuit board, and at least one of the other blows cooling air to the duct It is. As a result, the cooling air flow to the circuit board and the cooling air flow from the duct to the top panel can be split, and the strong air flow to the rear circuit board prevents the cooling air from flowing back to the circuit board. The surface operation unit and the top surface operation substrate can be cooled.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the present embodiment.

(Embodiment 1)
FIG. 1 is a schematic perspective view of a heating cooker (induction heating cooker in the present embodiment) according to the present embodiment, and FIG. 2 is a cross-sectional view illustrating an internal configuration of the heating cooker (induction heating cooking device) according to the present embodiment. FIG.

As shown in FIG. 1 and FIG.
A top plate 2 made of crystallized glass for placing 3 is disposed, and a left heating coil 3a on the left side, a right heating coil 3b on the right side, and a rear heating coil 3c on the back center in the main body shell 1 below the top plate 2 Is placed. The left heating coil 3a, the right heating coil 3b, and the post-heating coil 3c induce induction heating of the heated object 23 placed in the heated object placement area immediately above the heating coil by causing a high-frequency current to flow through the coil to generate a magnetic field. doing. Further, on the left side of the main body, a roaster 22 is placed below the left heating coil 3a. On the right side of the roaster 22, below the right heating coil 3 b, a circuit board 10 that is held by the board base 11 and supplies current to the heating coil 3 to control driving is disposed, and is close to the front side of the circuit board 10. A fan 6 for sending cooling air into the main body outer shell 1 is arranged. The upper part of the circuit board 10 is covered with a board base cover 5, separating the heating coils 3 a, 3 b, 3 c and the circuit board 10, and forming an air path on the circuit board 10. Further, a ventilation hole is provided below the heating coil 3b of the base base cover, and a part of the cooling air is sent to the heating coil 3b to cool the heating coil 3b. In addition, an exhaust port 5 serving as an outlet for cooling air is provided at the upper rear portion of the main body shell 1.

  The operation unit includes a top surface operation unit 14 configured at the front end of the main body on substantially the same surface of the top plate, and a front surface operation unit 17 on the right side of the outer front surface.

  The top surface operation unit 14 is provided with touch switches 13 for operating heating coils 3a and 3b for heating on / off, heating power up / down, timers, and the like. A liquid crystal display device (not shown) for displaying the operation state and the setting state is provided. A top surface operation board 15 that detects the operation of the touch switch 13 and controls signals and transmits / receives signals to / from the circuit board 10 is provided below the top plate 2. The top surface operation board 15 and the touch switch are built in a resin-made top surface operation board case 16.

  The front operation section 17 is provided with an operation push button 29 for performing operations such as heating on / off of the heating coil 3 c and the roaster 22, heating power up / down, menu selection, etc. The front operation unit case 19 is built in, and the front operation unit 17 is accommodated in the front operation substrate case 19 by opening and closing, or is exposed to the outside of the front operation unit case 19. Below the operation push button section 29, a front operation board 18 having a switch for detecting button operation and transmitting a signal to the circuit board 10 and a front operation board base 30 for supporting the front operation board 18 are provided. ing.

  The inlet 4 is formed by an opening hole connecting the outside and the inside of the main body outer shell 1 provided in front of the front operating portion 17 on the front surface of the main body outer shell 1, the rear surface of the front operating board base 30, and the bottom surface of the main body outer shell 1. It constitutes a ventilation path leading to. The fan 6 is located in the back of the front operation board case 19, and a fan case 7 having a fan inlet 8 and a first fan outlet 9 a is provided in the vicinity of the fan 6, and a circuit board is provided in the back of the fan case 7. 10 is arranged. The fan inlet 8 is on the front operation board case 19 side, and the fan outlet 9a is on the circuit board 10 side. Here, since the front operation unit 17 is disposed substantially vertically below the front end of the top plate 2, that is, the top surface operation unit 14, the positional relationship between the fan 6 and the top surface operation unit 14 is higher than that of the fan outlet 9a. Since the surface operation part 14 comes to the near side, the cooling air blown from the fan outlet 9a does not flow in the direction of the top surface operation part.

  Here, as shown in FIG. 3, the fan case 7 has a second fan outlet 9 b and a third fan outlet 9 c that are opened in the substantially centrifugal direction of the fan 6, and ducts are provided from the respective fan outlets. 20a and 20b are connected to form a wind passage. The direction of the duct 20a at the fan outlet 9b extends in the substantially centrifugal direction of the fan 6. The duct 20a has a branch point, and is divided into a path leading to the top surface operation board case 16 in front of the main body and a path extending to the vicinity of the left heating coil 3a. The direction of the duct 20b at the fan outlet 9c extends substantially in parallel with the axis of the fan 6 toward the front surface of the main body.

  The duct 20 is configured by connecting a fan case, a substrate base cover, and a top surface operation substrate case at a connection portion 28. Note that the duct 20 may be configured by only two components of the fan case 7, the substrate base cover 12, and the top surface operation substrate case 16, for example, configured by only the substrate base cover 12 and the fan case 7. . Further, for example, it may be composed of only one component, for example, composed of only the fan case 7.

  The top surface operation board case 16 is provided with a top surface operation board exhaust port 27 toward the rear of the main body on the left side when viewed from the front of the machine body, which is on the leeward side with respect to the duct connection portion 28.

  Next, the flow of cooling air from the cooling fan will be described. FIG. 2 shows the flow of the cooling air with arrows.

  First, outside air enters from the air inlet 4 provided in the main body shell 1 and is sucked into the fan air inlet 8. The sucked air is roughly divided into three paths. The first path is ejected from the first fan outlet 9a toward the circuit board 10 having a heat generating component such as a switching element and a diode bridge held by the board base 11, and then a part of the heating coil 3b. A path that flows in the direction toward the rear, flows to the rear of the circuit board 10, flows to the exhaust port 5 provided at the rear of the main body shell 1, and is discharged to the outside. The second path passes through the first duct 20a from the second fan outlet 9b, flows toward the left heating coil by the branch of the duct, flows to the exhaust port 5 provided behind the main body top unit, and is discharged outside. Route. The third path is a top surface operation board located on the left side of the main body through the duct 20 from the second fan outlet 9b and the third fan outlet 9c (shown in FIG. 3) through the front operation unit case 16. Blowing out from the exhaust port 27, a part flows to the exhaust port 5 while cooling the side surface along the inside of the left side surface of the main body shell 1, and a part joins the second path while cooling the front of the left heating coil 3a. This is a path that is discharged to the exhaust port 5 and out of the flow.

  The third path of the present configuration cools the electronic components on the top panel 15 and the top panel 14 on the top plate 2 by the ventilation path configuration that sends the cooling air from the fan 6 to the top panel board case 16. can do. By separately providing the fan outlet for each path, the cooling air to the circuit board 10 and the cooling air from the duct 20 to the top surface operation board 15 can be divided, and the duct 20 is blown by strong air flow to the circuit board 10 behind. It is possible to prevent the cooling air from flowing backward, and to reliably cool the top surface operation unit 14 and the top surface operation substrate 5. Further, by providing the top surface operation board exhaust port 27 in the top surface operation board case 16, a wind passage can be secured and the exhaust air can be used for cooling the left heating coil 3a, the outer left side surface, and the like.

  FIG. 4 is a sectional view around the second outlet 9b, and FIG. 5 is a sectional view around the third outlet 9c. The third path will be described in more detail with reference to FIGS. 4 and 5.

  The second fan outlet 9b and the third outlet 9c are provided in a substantially centrifugal direction of the fan, which makes it easy to create a wind flow forward and suppress pressure loss. The fan case 7 and the substrate base cover 12 constituting the duct 20, the duct connection portions 28 of the substrate base cover 12 and the top surface operation substrate case 16, and the fan case 7 and the top surface operation substrate case 16 overlap each other. The overlap is configured such that the windward side is inside the duct and the leeward side is outside the duct. As a result, the airtightness of the duct is increased, and since the wind does not easily hit the gap generated between the parts of the duct connection portion 28, the wind is prevented from leaking out of the duct, and the pressure loss of the wind is reduced. Can be reduced. The wall surface shape of the duct 20 on the top plate 2 side is inclined so that the leeward rises from the fan 6 toward the top surface operation board case 16. As a result, wind can flow smoothly and pressure loss can be suppressed.

  The portion to be joined to the duct 20 of the top surface operation board case 16 is a through-hole-like top surface operation board air vent 26 provided across the side wall to the bottom surface of the top surface operation board case 16. Therefore, it is possible to reduce the joint loss that has passed through the duct 20 and reduce wind loss. The top surface operation board vent 26 may be formed by a concave portion provided on the top surface of the top surface operation board case 16 and the top plate 2 instead of a hole in the side wall. Further, when it is desired to intensively cool the bottom of the top surface operation board 15, a hole may be made in the bottom surface to form a top surface operation vent.

  When the fan outlet 9 is provided in the centrifugal direction of the fan 6, the cooling air is ejected in the centrifugal direction of the fan 6. Therefore, the duct 20a of the present embodiment is configured to extend in the centrifugal direction from the fan outlet as shown in FIG. As a result, the wind pushed out by the centrifugal force passes through the duct 20 in the same direction, and the air can be efficiently blown without impairing the wind pressure, so that the cooling capacity can be enhanced.

  In particular, when the top panel 14 has a width to the left and right ends in front of the main body, in order to cool from end to end, wind is introduced from one end and exhausted from the opposite end. Is efficient. Therefore, as shown in FIG. 5, the duct 20b of the present embodiment is provided with a fan outlet 9c in the substantially centrifugal direction of the fan 6 in the vicinity of the right side surface of the main body. Since the cooling air can flow in from the right end of the top surface operation board case 16, the right surface of the top surface operation board 15 or the top surface operation unit 14 is also provided. Can be cooled. Furthermore, by providing the top surface operation board exhaust port 27 in the vicinity of the left end of the top surface operation board case 16, it is possible to blow air from the end to the end of the top surface operation board, and it is possible to cool effectively.

  As described above, in the present embodiment, the fan case 7, the substrate base cover 12, and the top surface operation substrate case 16 constitute the duct 20 that blows cooling air to the top surface operation substrate case 16, thereby adding new parts. It can cool without doing and can suppress an increase in material cost and an assembly man-hour. In addition, by blowing cooling air into the top surface operation board case 16, the electronic components and the like on the top surface operation board 15 can be cooled, and the temperature rises due to the heat generated from the electronic components and the heat from the object to be heated. Failure due to destruction can be suppressed. Moreover, since the top | upper surface operation part 14 can also be cooled, the operation comfort can be improved.

  In this configuration, the ducts 20 are provided at two locations, but may be one or three or more. In addition, sealing the duct connecting portion with an elastomer or foamed material has the effect of preventing the leakage of wind and improving the cooling efficiency.

  As described above, the heating cooker according to the present invention can efficiently cool the inside of the main body and can improve usability, so that it constitutes a forced air cooling system and has another operation unit in the front. Is also applicable.

1 Body outline 2 Top plate 3 Heat source (heating coil)
3a Left heating coil 3b Right heating coil 3c Post heating coil 4 Intake port 5 Exhaust port 6 Fan 7 Fan case 8 Fan suction port 9 Fan outlet 9a First fan outlet 9b Second fan outlet 9c Third fan Air outlet 10 Circuit board 11 Substrate base 12 Substrate base cover 13 Touch switch 14 Top operation section 15 Top operation board 16 Top operation board case 17 Front operation section 18 Front operation board 19 Front operation board case 20 Duct 20a Duct A
20b Duct B
21 Heated object placement position 22 Roaster 23 Heated object 24 Kitchen frame 25 Coil duct 26 Top panel operation board air vent 27 Top panel operation board exhaust port 28 Duct connection 29 Operation push button 30 Front operation board base

Claims (6)

A main body outer shell constituting the outer shell,
A top plate for placing an object to be heated provided at the top of the main body;
A heat source for heating the object to be heated provided below the top plate;
An air inlet provided in the front or bottom of the outer surface of the main body outer shell or both;
A fan that is provided in front of the outer shell of the main body, sucks air outside the outer shell of the main body through the intake port, and blows it to a heat generating portion inside the main body to forcibly cool it;
A fan case configured in the vicinity of the fan and having a fan inlet and a fan outlet;
A circuit board for controlling the output of the heat source provided on the downstream side of the cooling air blown from the fan outlet by the fan;
A substrate base for holding the circuit board;
A board base cover provided between the heat source and the circuit board to form a ventilation path on the circuit board;
An exhaust port serving as an outlet for cooling air provided in the upper part of the rear of the outer shell of the main body;
A top surface operation unit by a capacitive touch switch that is provided in front of the main body substantially flush with the top plate and sets control information of the heat source;
A top surface operation board for detecting and processing a signal of the touch switch provided near the bottom of the top surface operation unit;
And a top surface operation board case for holding the top surface operation board,
The top surface operation unit is provided on the front side of the main body with respect to the fan,
By at least one or more of some of the parts of said fan case and said substrate base cover and the top surface operation board case, a duct for blowing cooling air from the fan into the top surface operation board case, the top A top surface operation board vent provided at the end of the surface operation substrate case, and
The duct is provided toward the front side of the main body in the vicinity of the outer surface of the main body and connected to the top surface operation board vent.
Cooking device. The cooking device according to claim 1, wherein each component constituting the duct has a configuration in which connection portions overlap each other. The heating cooker according to claim 2, wherein the connecting portion of each component constituting the duct is fitted with the windward side being configured on the duct inner surface side and the leeward side being configured on the duct outer surface side. The shape of the duct, the heating cooker according to all or part of the wall of the duct to claim 1 where the structure is inclined toward the top surface from the fan. The cooking device according to any one of claims 1 to 4 , wherein a top surface operation board exhaust port is provided downstream of the duct connection portion of the top surface operation board case. A plurality of fan air outlet, claim Tsukara least one of which blows cooling air substantially rearward of the circuit board, another from at least one is where the structure for blowing cooling air to the duct The cooking device according to any one of 1 to 5 .