JP2012022906A - Heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heating cooker with improved detection accuracy of a temperature in a cooking chamber.SOLUTION: The heating cooker comprises a body 2, a cooling fan 60 disposed in the body 2, a cooking chamber 26 disposed in the body 2 with a front face opening, a temperature sensor 80 provided with a fixing piece 83 fixed to the cooking chamber 26 by a fixing member 84, a tube 80a including a detection element for detecting a temperature of the cooking chamber 26 and a lead wire 80b, and a heat insulation material 52 covering the temperature sensor 80 fixed to the outside of the cooking chamber 26. A fitting position of the fixing member 84 for fixing the fixing piece 83 of the temperature sensor 80 is located in relation to a cooling air generated by the cooling fan 60 on the leeward of a position of the detection element. A position of a through hole 52a provided on the heat insulation material 52 through which the lead wire 80b of the temperature sensor 80 is passed and a position of a notch 52b provided on the heat insulation material 52 between the through hole 52a and an edge face of the heat insulation material 52 are located in relation to the cooling air generated by the cooling fan 60 on the leeward of a position of the temperature sensor 80.

Description

  The present invention relates to a heating cooker provided with a grill.

  As a conventional cooking device, the mouth part of the upper and lower heaters is provided at the back of the grill cabinet, and the temperature sensor faces the inside of the grill cabinet from the outside to the inside of the range surrounded by the mouth. A protective cover is attached to the heat shield plate around the grill cabinet so that the power supply part of the upper and lower heaters and the signal line of the temperature sensor are passed outside the mouth part of the upper and lower heaters. A temperature sensor is known that accurately detects a temperature without being affected by cooling air (Patent Document 1).

JP 2009-140803 A

  In recent years, heating cookers that support automatic cooking in grills have become widespread. In this automatic cooking, the heater is controlled based on the output of the temperature sensor unit provided in the grill cabinet, and cooking according to the amount of food is automatically performed.

  In the heating cooker of patent document 1, in order to suppress that the cooling air for cooling a heating coil etc. hits a temperature sensor part directly and influences a temperature sensor part, it is the outer side of the cooking chamber which attached the temperature sensor part. A protective cover is provided to prevent the cooling air from directly hitting the temperature sensor. This protective cover is considered to be attached by the following very complicated procedure.

  First, the edge protection member is passed through the signal line of the temperature sensor fixed to the grill cabinet. Next, the signal line of the temperature sensor unit is passed through the hole for the signal line of the protective cover. Furthermore, the heater fixed to the grill box is passed through the hole for the heater of the protective cover. And after fixing an edge protection member to the hole for exclusive use of the signal of a protection cover, a protection cover is fixed to a grill warehouse. Thereafter, the signal line of the temperature sensor unit is pulled out, and a power supply line is attached to the end of the heater.

  However, the edge protection member may come off during this work, in which case the cooling air is supplied to the inside of the protective cover through the hole for the signal line of the protective cover, thereby There may be a case where the temperature sensor unit is affected and the temperature inside the grill cannot be measured accurately.

  The present invention has been made to solve the above-described problems, and includes a main body, a cooling fan disposed in the main body, a cooking chamber disposed in the main body and having an open front surface, and the cooking chamber. A fixing piece fixed by a fixing member, a tube enclosing a detection element for detecting the temperature of the cooking chamber and a lead wire, and a heat insulating material covering the temperature sensor fixed to the outside of the cooking chamber, The fixing position of the fixing member for fixing the fixing piece of the temperature sensor is provided on the leeward side of the cooling air generated from the cooling fan with respect to the position of the detecting element, provided on the heat insulating material, and the lead of the temperature sensor The through hole for passing the wire and the position of the notch provided between the through hole and the end face of the heat insulating material are provided on the leeward side of the cooling air generated from the cooling fan with respect to the position of the temperature sensor. .

  According to the present invention, it is possible to easily attach the heat insulating member of the temperature sensor part, and furthermore, since the heat insulating member is held in a configuration that does not easily drop off, the cooling air directly hits the temperature sensor part by dropping off the heat insulating member. A situation can be avoided.

It is a perspective view of the state where the cooking-by-heating machine of one example was stored in the system kitchen. It is an exploded view of the heating cooker of one Example. It is AA sectional drawing of FIG. It is explanatory drawing of the temperature sensor part in the cooking chamber of one Example. It is an exploded view of the heat insulating material attaching part of the temperature sensor attaching part. It is explanatory drawing of the heat insulating material attachment part of a temperature sensor attachment part. It is flow explanatory drawing of the cooling wind of the cooking chamber surrounding upper surface of the heating cooker of one Example. It is flow explanatory drawing of the cooling wind of the cooking chamber surrounding side surface of the heating cooker of one Example.

  Embodiments of the present invention will be described below with reference to FIGS. In the following description, a built-in heating cooker that fits into the system kitchen will be described as an example. However, a stationary heating cooker placed on the kitchen may be used.

  In FIG. 1, the main body 2 of the heating cooker is installed by dropping from the top surface of the top plate 1 a of the system kitchen 1, and after installation, the grill box 4 and the operation unit panel 5 appear on the front part of the system kitchen 1. ing.

  A cooking pan (not shown) for cooking is placed on a plate 3 made of heat-resistant glass or the like disposed on the upper surface of the main body 2, and the peripheral end surface of the plate 3 is protected by a plate frame 14. . A placement unit 6 is drawn on the plate 3, and cooking can be performed by placing a cooking pot on the placement unit 6. The placement unit 6 includes a placement unit right 6a on the right before the top surface of the plate 3 and a placement unit left 6b on the left. The placement unit is located in the back (center rear) between the placement units 6a and 6b. A center 6c is arranged. And the heating coil unit 25 (FIG. 2) for heating a cooking pot is installed in the upper part in the main body 2 so that it may be located under each mounting part 6 on both sides of the plate 3. As shown in FIG. An upper surface operation unit 9 used for cooking in the mounting unit 6 is installed in front of the plate 3, and the contents of the upper surface operation unit 9 and the like are displayed on the upper surface display unit 10 on the back side.

  On the rear upper surface of the main body 2, the air intake 7 that sucks outside air by driving a cooling fan 60 (FIG. 2) described later, and the waste after cooling the heating coil unit 25 and the substrate 70 (FIG. 2) that are heat-generating components. An exhaust port 8 for discharging heat to the outside of the main body 2 is provided. Note that the waste heat of the oven 4 is also discharged from the exhaust port 8 at the same time.

  The grill box 4 is for baking an object to be heated such as fish, meat, and pizza, and is disposed on the left or right side of the front surface of the main body 2 (in the present embodiment, it is disposed on the left side of the main body 2). .) Note that the grill cabinet may be referred to as an oven or a roaster.

  FIG. 2 is an explanatory diagram in which the plate 3 and the heating coil unit 25 are disassembled from the main body 2. In FIG. 2, the heating coil unit 25 and a substrate 70 that constitutes a circuit with electronic components are arranged inside the main body 2, and these heating coil unit 25 and the substrate 70 are heat generating components. A cooling fan 60 is arranged to cool. The rear plate frame 14 of the plate 3 is provided with a detachable intake / exhaust cover 7a.

  FIG. 3 is an explanatory view of the grill warehouse 4 cut along the AA section of FIG. 1, and the details of the grill warehouse 4 will be described using this. The cooking chamber 26 is a box-shaped unit composed of a horizontal plate 26b, an upper plate 26c, and a bottom plate 26d, and a front opening 26a is provided on the front surface. Here, an example is shown in which a horizontal plate 26b and a bottom plate 26d are formed by bending a single plate into a U-shape. However, as long as it has a horizontal plate, an upper plate, and a bottom plate, how to cook it 26 may be configured. The front end portion of the cooking chamber 26 is configured to abut on the front cover 28. Upper and lower heaters 27 (upper heater 27a and lower heater 27b) made of a heating element such as a sheathed heater are installed at the upper and lower portions of the cooking chamber 26. The upper heater 27a is disposed while meandering appropriately along the front-rear direction or the lateral width direction of the cooking chamber 26. The lower heater 27b is arranged while meandering along the front-rear direction of the cooking chamber 26, and is provided up to the front surface portion near the back side of the door 32 described later. The control unit 45 that controls the upper heater 27a and the lower heater 27b is disposed on the upper surface of the grill cabinet 4 at a location that is not affected by the heat from the grill cabinet 4, and both the operation unit panel 5 and the upper operation unit 9 are arranged. It is lined up. The front opening 26a of the cooking chamber 26 is closed by a door 32, the handle 11 is attached to the front side of the door 32, and the back side is detachably connected to the front surface of the saucer support portion 31a. A tray 31 is detachably mounted on the upper surface of the support portion 31a.

  An exhaust outlet 29 is provided at the rear upper part of the cooking chamber 26, and the exhaust outlet 29 communicates with the exhaust outlet 8 opened on the upper surface of the rear part of the main body 2 through the exhaust passage 35. Further, an air purifying catalyst 34 for purifying smoke and odor generated in the cooking chamber 26 and a catalyst heater 37 for heating the catalyst 34 are disposed on the inlet side of the exhaust outlet 29, and smoke and odors are disposed on the way. Exhaust means 36 for forcibly discharging the odor out of the main body 2 through the exhaust port 8 is provided. The exhaust means 36 is composed of an exhaust fan 36a and an exhaust motor 36b. The catalyst heater 37 and the exhaust motor 36 b are connected to the control unit 45. An air intake 43 is provided between the lower front side of the cooking chamber 26 and the door 32, and when the exhaust means 36 is driven, outside air flows into the cooking chamber 26 from the air intake 43, and the lower surface of the tray 31. Flows to the exhaust passage 35 side while cooling. The saucer 31 is housed in the cooking chamber 26 so as to be freely inserted and removed from the front opening thereof. A grill net 33 is placed therein, and a heated object 30 such as a fish is placed thereon.

  The temperature sensor 80 is for detecting the temperature inside the cooking chamber 26, is provided on the side of the opening 26 a on the side of the cooking chamber 26, and is connected to the control unit 45. Here, as the temperature sensor 80, a temperature detection element is provided in a tube 80a made of a thin plate made of stainless steel and sealed with glass or the like. However, any temperature sensor 80 can be used as long as the temperature of the grill box 4 can be measured. The temperature sensor may be used.

  The temperature sensor 80 will be described in detail with reference to FIG. As shown here, the temperature sensor 80 is attached to the horizontal plate 26 b of the cooking chamber 26 closer to the front cover 28 than the tips of the upper and lower heaters 27. Further, the pipe 80a of the temperature sensor 80 is passed through the hole 26f of the horizontal plate 26b from the outside to the inside. A fixing piece 83 (FIG. 5) is fixed with a nut 82 (FIG. 5) with a screw 81 at a position ahead of the tube 80a on the same line in the horizontal direction of the tube 80a.

  FIG. 5 is an exploded view of the horizontal plate 26b to which the temperature sensor 80 is fixed as viewed from the back side, and shows the configuration of the rail support bracket 51 and the heat insulating material 52 fixed to the horizontal plate 26b. Moreover, FIG. 6 is explanatory drawing of the state which attached the components demonstrated in FIG.

  The temperature sensor 80 has a lead wire 80b for outputting a signal. The rail support bracket 51 fixes the rail 50 which takes in and out the saucer support part 31a to / from the cooking chamber 26. On the front side of the rail support bracket 51, a holding portion 51a formed of a flange is provided. The heat insulating material 52 is made of glass wool having high heat resistance and flexibility. In this embodiment, the height x width x thickness is about 110 x 62 x 5 mm. Since the holding portion 51a has substantially the same size as the heat insulating material 52, the heat insulating material 52 can be held by the holding portion 51a and the horizontal plate 26b.

  Next, a method for fixing the temperature sensor 80 to the horizontal plate 26b will be described. A fixing piece 83 is fixed by caulking at the base of the temperature sensor 80. The fixing piece 83 is fixed to the horizontal plate 26b by a fixing member 84 including a screw 81 and a nut 82. As a result, the tip of the screw 81 and the nut 82 are arranged at the same height as the temperature sensor 80.

  A through hole 52a of about φ5 mm was provided at the tip of the notch 52b of the heat insulating material 52 so that the heat insulating material 52 could be attached after the temperature sensor 80 was fixed to the cooking chamber 26. Here, the cut 52b is for passing the lead wire 80b, and the through hole 52a is for holding the lead wire 80b. As described above, since the heat insulating material 52 is made of glass wool having high flexibility, when manufacturing the heating cooker of the present embodiment, the operation of passing the lead wire 80b through the notch 52b and holding the heat insulating material 52 are held. The operation of holding the part 51a can be easily performed. At the same time, there is little possibility that the normally attached heat insulating material 52 falls off the holding portion 51a, and the cooling air is not directly blown onto the temperature sensor 80. In this embodiment, the notch 52b is provided horizontally from the front side, and the through hole 52a is provided at a position about 1/3 from the front end. As will be described later, the direction in which the cut 52b is provided corresponds to the lee of the temperature sensor 80, so that the influence of the cooling air entering from the cut 52b on the temperature sensor 80 can be reduced.

  The present embodiment is configured as described above. Next, the operation will be described by taking as an example the case where the sword fish is grilled as the object to be heated 30.

  Five sword fishes are arranged on the grill net 33, and the operation unit panel 5 is used to select the fish menu for cooking and start cooking. Then, the cooling fan 60 of the main body 2 operates and cooling air for cooling the inside of the main body 2 is sent. The cooking chamber starts heating by a plurality of heating process operations in which the upper and lower heaters 27 are incorporated in the controller 45 in advance. In the automatic cooking of roasted fish, the cooking time is adjusted by controlling the amount of food to be cooked during the process. The temperature detected by the temperature sensor 80 is taken into the control unit 45 after several minutes from the start, and then the temperature is measured again after a predetermined time, and the amount of the object to be heated 30 is determined by the temperature rise during the predetermined time.

  If the measured temperature rise value is larger than the temperature rise value incorporated in advance with cooking of three sword fish as a standard, the amount is determined to be small, and if the measured temperature rise value is small, the amount is determined to be large.

  When it is determined that the amount is small, cooking is completed by shortening the cooking time of each process incorporated in advance by the same amount according to the small amount. Conversely, as in the case of the five animals shown here, when it is determined that there is a large amount, the cooking time of each process incorporated in advance is increased by the same amount according to the degree of the amount, and the cooking is completed. To do. Since the temperature detected by the temperature sensor 80 by the heat insulating material 52 is not cooled by the cooling air, the temperature in the cooking chamber 26 can be accurately measured, so that the amount can be correctly determined. Eventually, the cooking ends when all the heating steps are completed. Remove the grilled sword fish from the grill 33.

  Here, the flow of the cooling air of the cooling fan 60 operating during cooking will be described with reference to FIGS. FIG. 7 is an upper view of the surroundings of the cooking chamber, and FIG. In FIGS. 7 and 8, arrows indicate the flow of wind, and broken lines indicate the flow inside and below the component.

  The air is sucked by the cooling fan 60 from the air inlet 7, passes through the inside of the duct 71 surrounding the substrate 70, and exits above the opening 71 a. The heating coil unit 25 (not shown here) on the placement unit right 6a disposed above the opening 71a, and at the same time, is disposed on the partition plate 15 that surrounds the cooking chamber 26 from above and insulates from the duct 71. The heating coil unit 25 (not shown here) disposed in the placement portion left 6b and the placement portion center 6c is cooled. Then, the air is exhausted from the exhaust port 8. The above has shown about the flow of the wind shown with the arrow without a code | symbol in particular in FIG.7, FIG.8.

  However, around the cooking chamber 26, there is a wind a in which cooling air flowing on the upper surface of the partition plate 15 between the placement portion left 6 b and the placement portion center 6 c flows from the vent hole 15 a to the lower portion of the main body 2. Then, the air b flows from the lower surface to the substrate side plate 15a of the partition plate 15. And it becomes the wind c which flows between the rear part of the horizontal board 26b, and the board | substrate side board 15b. And it becomes the wind d which flows between the front side part of the horizontal board 26b, and the board | substrate side board 15b. Here, the wind d flows between the heat insulating material 52 and the substrate side plate 15b. Since the rear side of the main body 2 is on the windward side, the wind e leaks from the gap 28a between the front cover 28 and the horizontal plate 28b. Further, the wind f leaks from the clearance below the front cover 28. Finally, it hits the end of the rail support 51 and flows upward and becomes the air g flowing on the upper plate 26c of the cooking chamber 26. And it flows as the wind h which leaks from the upper left side of the cooking chamber 26.

  Therefore, the wind flows between the horizontal plate 26b and the substrate side plate 15b in the above-described wind d, but the surrounding horizontal plate 26b to which the fixing piece 83 of the temperature sensor 80 is fixed is not directly exposed to the wind, and all the heat insulating material 52 and It flows between the substrate side plates 15b. Therefore, the temperature of the horizontal plate 26b around the temperature sensor 80 does not decrease.

  Therefore, since the temperature of the fixed piece 83 fixed to the horizontal plate 26b does not drop, the heat sensitive temperature of the temperature detecting element built in the tube 80a fixed to the fixed piece 83 by caulking can correctly detect the temperature of the cooking chamber 26. it can.

  Furthermore, since the cut 52b of the heat insulating material 52 is provided on the leeward side, the wind flows from the cut 52b and does not cool the fixed piece 83. Further, the lead wire 80b is taken out from the through hole 52a, and the heat insulating material 52 is fitted to the holding portion 51a and the horizontal plate 26b by fitting into the fixing member 84 by the cut 52b.

  According to the above embodiment, the cut 52b provided in the heat insulating material 52 does not open due to variations in work, and the cut 52b faces the leeward side, so that the wind does not blow toward the fixed piece 83.

  Further, since the lead wire 80b of the temperature sensor 80 with the heat insulating material 52 attached can be visually confirmed, the workability is good, the quality is stable, and the temperature of the cooking chamber 26 can be accurately measured by the temperature sensor 80.

2 Main body 4 Grill chamber 26 Cooking chamber 26a Front opening 26b Horizontal plate 26f Hole 27 Upper / lower heater 32 Door 45 Control section 51a Holding section 52 Heat insulating material 52a Through hole 52b Cut 60 Cooling fan 70 Substrate 80 Temperature sensor 80a Tube 80b Lead Wire 83 Fixing piece 84 Fixing member

Claims (1)

A main body, a cooling fan disposed in the main body, a cooking chamber disposed in the main body and having an open front surface, a fixing piece fixed to the cooking chamber with a fixing member, and a detection element for detecting the temperature of the cooking chamber A temperature sensor composed of a tube and a lead wire enclosing the inside, and a heat insulating material covering the temperature sensor fixed to the outside of the cooking chamber,
The mounting position of the fixing member for fixing the fixing piece of the temperature sensor is provided on the leeward side of the cooling air generated from the cooling fan with respect to the position of the detection element, and the lead wire of the temperature sensor is provided on the heat insulating material. The through hole to be passed and the position of the notch provided between the through hole and the end face of the heat insulating material are provided on the leeward side of the cooling air generated from the cooling fan with respect to the position of the temperature sensor. Cooking cooker.

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