JP5329303B2 - Cooker - Google Patents

Description

  The present invention relates to a heating cooker, and more particularly to a heating cooker configured to accurately detect the temperature of air containing steam discharged from a cooking chamber.

  Patent Document 1 discloses a cooking chamber that contains ingredients and cooks, a blower fan that circulates air in the cooking chamber, a heater that heats the cooking chamber, and a steam generator that supplies steam to the cooking chamber. And a discharge port that is led out from the drain outlet formed in the lower part of the cooking chamber and discharges the water in the cooking chamber to the outside of the cooking chamber, and exhaust air that discharges the steam-containing air to the outside of the cooking chamber. A discharge pipe provided with a mouth, a discharge pipe temperature sensor which is provided in the discharge pipe and detects the temperature of air containing steam discharged from the cooking chamber, and cooking based on the detected temperature of the discharge path temperature sensor There is disclosed a heating cooker provided with a control device having a calculation means for calculating the concentration of steam in the refrigerator. The discharge pipe of the cooking device includes a drain port that extends from the interior drain port of the cooking chamber and drains water at the tip thereof, and an exhaust port that discharges steam to an intermediate portion upstream of the drain port. The exhaust port is connected to an exhaust pipe for discharging steam to the outside of the cooking device. The exhaust pipe temperature sensor is provided at a position where an exhaust port is formed in the exhaust pipe.

JP 2005-016743 A

  In the heating cooker of Patent Document 1, the air containing the steam in the cooking chamber is discharged from the discharge pipe through the exhaust pipe to the outside of the heating cooker, and the control device detects the discharge pipe temperature sensor through the discharge pipe. The concentration of the steam in the cooking chamber is calculated based on the temperature of the steam that is generated. In such a heating cooker, the inside of the discharge pipe has a higher temperature than the outside of the heating cooker due to the influence of air containing steam discharged from the inside of the cooking chamber, and depends on the amount of air discharged from the inside of the cooking chamber. In some cases, air outside the heating cooker flows into the discharge pipe from the drain outlet by natural convection, and is discharged from the exhaust outlet through the exhaust pipe to the outside of the heating cooker again. When the air outside the cooking device flows into the discharge pipe from the drain through natural convection, the temperature of the air containing steam inside the cooking chamber decreases due to the outside air flowing from the outside of the heating cooker in the vicinity of the exhaust opening in the discharge pipe. The exhaust pipe temperature sensor cannot accurately detect the temperature of air containing steam from the inside of the cooking cabinet, and the control device cannot accurately calculate the concentration of steam in the cooking cabinet. The present invention aims to solve such problems.

  In order to solve the above-described problems, the present invention provides a cooking chamber for storing and cooking food, a blower fan for circulating air in the cooking chamber, a heater for heating the cooking chamber, and supplying steam to the cooking chamber. A steam generator that discharges water in the cooking chamber to the outside of the cooking chamber, and an exhaust that discharges steam in the cooking chamber to the outside of the cooking chamber A discharge path provided with a mouth, a discharge path temperature sensor for detecting the temperature of air containing steam that is provided in the discharge path and discharged from the cooking chamber, and cooking based on at least the detection temperature of the discharge path temperature sensor A cooking device comprising a control device having a calculation means for calculating the concentration of steam in the refrigerator, characterized in that the discharge path temperature sensor is arranged upstream of the exhaust port and the drain port in the discharge path. To provide heating cookers A.

  In the heating cooker configured as described above, the air containing the steam in the cooking chamber is discharged from the outlet through the discharge path from the discharge outlet in the storage, but is discharged from the cooking chamber in the discharge path. The temperature is higher than the outside due to the influence of air containing steam, and depending on the amount of air exhausted from the cooking chamber, the external air flows into the exhaust path from the drainage port by natural convection. May be discharged from. Even if external air flows into the discharge path from the drain port due to natural convection and is discharged from the exhaust port, the discharge path temperature sensor is located upstream of the exhaust port and drain port in the discharge path. Therefore, it is possible to accurately detect the temperature of the air containing the steam exhausted from the cooking chamber without being affected by the temperature of the air flowing in from the outside, and the control device can detect the steam in the cooking chamber. The concentration of can be calculated accurately.

  In the cooking device configured as described above, it is preferable that the discharge path is inclined downward from the internal drain port toward the drain port, and in this way, water discharged from the cooking chamber is discharged. It is discharged from the outlet without remaining in the path, and air containing steam discharged from the cooking chamber is not cooled by the water remaining in the discharge path, and the discharge path temperature sensor is The temperature of the air containing the steam discharged from the inside can be accurately detected.

  In the cooking device configured as described above, the discharge path temperature sensor has a rod shape and has a temperature sensing part that detects the temperature at the tip part, and the discharge path temperature sensor has a temperature sensing part at the tip part on the upper side. It is preferable to stand and attach to the lower part of the discharge path so that, even if water drops condensed at the upper part of the discharge path fall on the discharge path temperature sensor, Since it flows down from the upper temperature sensing part to the lower temperature sensing part, the discharge path temperature sensor can accurately detect the temperature of the air containing the steam discharged from the cooking chamber.

  In the cooking device configured as described above, a protrusion for preventing water passing through the discharge path from contacting the lower part of the discharge path temperature sensor is provided at a position where the discharge path temperature sensor is erected in the discharge path. In this way, when the water discharged from the cooking chamber passes through the discharge path, the protrusion does not contact the lower part of the discharge path temperature sensor, and the discharge path temperature sensor It is possible to accurately detect the temperature of the air containing the steam discharged from the cooking chamber without cooling the lower part by the water passing through the inside.

  In the cooking device configured as described above, a water droplet guide unit is provided on the upper part of the discharge path to drop water droplets condensed on the upper part of the discharge path around the discharge path temperature sensor. In this way, the water droplets condensed at the upper part of the discharge path come into contact with the discharge path temperature sensor and fall around it without cooling, so the discharge path temperature sensor is not in the cooking chamber. It is possible to accurately detect the temperature of air containing steam discharged from the air.

  In another embodiment of the cooking device configured as described above, the discharge path temperature sensor has a rod-like shape and has a temperature sensing part that detects the temperature at the tip thereof, and the discharge path temperature is above the discharge path. An insertion hole for inserting the sensor is formed, and the discharge path temperature sensor is inserted into the insertion hole so that the temperature sensing part at the tip is on the lower side without contacting the lower part of the discharge path, and the upper part in the discharge path The discharge path temperature sensor can be easily mounted in the discharge path, and an insertion hole for easily mounting the discharge path temperature sensor is formed in the discharge path. Even so, there is no risk of water leakage since the insertion hole is formed in the upper part of the discharge path. Moreover, since the temperature sensing part of the discharge path temperature sensor is attached without contacting the lower part of the discharge path, it becomes difficult to be cooled by water flowing in the lower part of the discharge path, and the discharge path temperature sensor is discharged from the cooking chamber. The temperature of air containing steam can be accurately detected.

  In the heating cooker according to another embodiment configured as described above, a water droplet that drops on the upper part of the discharge path around the discharge path temperature sensor around the discharge path temperature sensor in the upper part of the discharge path. It is preferable to provide a guiding portion, and water droplets condensed at the upper part of the discharge path come into contact with the discharge path temperature sensor and fall around it without being cooled. It is possible to accurately detect the temperature of the air containing the discharged steam.

  In the cooking device according to another embodiment configured as described above, water droplets condensed at the upper part of the discharge path flow down to the temperature sensing part through the discharge path temperature sensor above the temperature sensing part of the discharge path temperature sensor. It is preferable to provide a water drop prevention member that prevents the water drop from flowing, and even if water droplets condensed at the top of the discharge path fall through the discharge path temperature sensor, the water drop prevention member discharges the water drop. Since it is made not to flow down to the temperature sensing part of the temperature sensor, the discharge path temperature sensor can accurately detect the temperature of the air containing the steam discharged from the cooking chamber.

  In each heating cooker configured as described above, if a watering nozzle for sprinkling water is provided in the temperature sensing part of the discharge path temperature sensor, and the watering nozzle of the watering nozzle is arranged to face the temperature sensing part, the watering nozzle is Water can be reliably sprinkled on the temperature sensing part of the discharge path temperature sensor, and the detection temperature of the discharge path temperature sensor can be reliably lowered.

It is a plane sectional view of the cooking-by-heating machine of a 1st embodiment. It is a longitudinal cross-sectional view in the AA line of FIG. It is a longitudinal cross-sectional view in the BB line of FIG. It is the longitudinal cross-sectional perspective view in the CC line of FIG. 1 which looked at the discharge tank from diagonally upward. It is the longitudinal cross-sectional perspective view in the CC line of FIG. 1 which looked at the discharge tank from diagonally downward. It is a longitudinal cross-sectional view of the discharge tank in the DD line of FIG. It is a block diagram of a control apparatus. It is the longitudinal cross-sectional perspective view in the CC line of FIG. 1 which looked at the discharge tank which changed the shape of the water droplet guidance | induction part from diagonally downward (1). It is the longitudinal cross-sectional perspective view in the CC line of FIG. 1 which looked at the discharge tank which changed the shape of the water droplet guide part from diagonally downward (2). It is a longitudinal cross-sectional view of the discharge tank of 2nd Embodiment.

Hereinafter, an embodiment of a heating cooker according to the present invention will be described with reference to the drawings.
(First embodiment)
As shown in FIGS. 1 to 3, the heating cooker 10 of this embodiment includes a cooking chamber 11 that contains ingredients and cooks, a blower fan 20 that circulates the air in the cooking chamber 11, and the cooking chamber 11. A heater 30 that heats the inside, a steam generator 40 that supplies steam into the cooking chamber 11, and a water discharge port 11 e formed in the lower part of the cooking chamber 11, and water in the cooking chamber 11 is extracted from the cooking chamber 11. 11, a discharge path 70 having a drain outlet 72b for discharging outside and an exhaust port 73a for discharging air containing steam in the cooking chamber 11 to the outside of the cooking chamber 11, and a cooking chamber 11 provided in the discharge path 70. A control device having a discharge path temperature sensor 75 for detecting the temperature of the air containing the steam discharged from the inside, and a calculation means for calculating the concentration of the steam in the cooking chamber 11 based on at least the temperature detected by the discharge path temperature sensor 75. With 80 . Thus, in the cooking device 10, the discharge path temperature sensor 75 is disposed on the upstream side of the exhaust port 73 a and the drain port 72 b in the discharge path 70. Below, this heating cooker 10 is explained in full detail.

  The cooking device 10 includes a cooking chamber 11, a blower fan 20, a heater 30, a steam generation device 40, an interior temperature sensor 50, an air supply / exhaust duct 60, a discharge path 70, and a control device in a casing 10 a. 80.

  As shown in FIG.1 and FIG.2, the cooking chamber 11 is for accommodating and heating a foodstuff, and has a box shape in which a part of the front surface is opened and the periphery is covered with a heat insulating material. . A heat insulating door 12 having a heat-resistant glass window is provided at the opening on the front surface of the cooking chamber 11 so as to be freely opened and closed. The cooking chamber 11 has a cooking space 11a for containing and cooking ingredients and a heating space 11b for sending hot air to the cooking space 11a. The cooking space 11a and the heating space 11b are sucked into the blower fan 20. It is partitioned so as to be ventilated by a fan cover 22 that covers the mouth side so as to allow ventilation. As shown in FIG. 2, a pair of support frames 13 are detachably attached to the left and right ends of the cooking space 11a for accommodating trays T such as hotel pans in a vertical direction.

  As shown in FIG.1 and FIG.2, the ventilation fan 20 circulates the air in the cooking chamber 11, and centrifugal fans, such as a sirocco fan, are used. As shown in FIG. 3, the blower fan 20 is rotatably attached to the heating space 11 b side on the left side surface of the cooking chamber 11, and the blower fan 20 drives and rotates the fan motor 21 to cook space 11 a. Air sucked from the side is discharged in the centrifugal direction. A rectangular plate-shaped fan cover 22 is detachably attached to the suction port side of the blower fan 20 in the cooking chamber 11, and the fan cover 22 prevents foreign matter from entering the blower fan 20. The cooking chamber 11 is partitioned into a cooking space 11a and a heating space 11b so as to allow ventilation.

  As shown in FIG.1 and FIG.2, the heater 30 heats the inside of the cooking cabinet 11, and well-known electric heaters, such as a sheathed heater, are used. As shown in FIG. 3, the heater 30 is annularly attached to the outer peripheral side of the blower fan 20 on the heating space 11 b side on the left side surface of the cooking chamber 11. When the heater 30 is operated in a state where the air in the cooking chamber 11 is circulated by the blower fan 20, the blower fan 20 sucks the air in the cooking space 11 a and blows it in the centrifugal direction, and the blower fan 20 blows in the centrifugal direction. When passing through the heater 30 attached to the outer peripheral side, it is heated and becomes hot air and sent to the cooking space 11a.

  The steam generator 40 sends steam into the cooking chamber 11, and as shown in FIGS. 1 and 2, a discharge tank of a discharge path 70 described later at a position on the left side of the cooking chamber 11 in the casing 10a. 72 is erected. The steam generator 40 generates steam by generating heat by electromagnetic induction heating of a conductive heating body housed in a cylindrical evaporation container. The steam delivery port of the steam generator 40 is a steam delivery cylinder at a steam inlet 11c formed at a position on the outer peripheral side of the heater 30 on the rear surface side upper part of the left side surface which is the heating space 11b side of the cooking chamber 11. Connected through. In a state where the blower fan 20 and the heater 30 are operated, the steam introduced from the steam introduction port 11 c is sent to the cooking space 11 a together with the hot air generated by the blower fan 20 and the heater 30.

  The internal temperature sensor 50 detects the temperature in the cooking chamber 11, and for example, a thermocouple is used. As shown in FIG. 3, the internal temperature sensor 50 is attached to a position on the outer peripheral side of the heater 30 at the upper part on the front side of the left side which is the heating space 11 b side of the cooking chamber 11. The internal temperature sensor 50 is disposed on the downstream side of the steam inlet 11c in the air blowing direction when the blower fan 20 is rotated, and the left side surface of the cooking chamber 11 contains the steam of the internal temperature sensor 50. A shielding plate 51 is attached to the introduction port 11c side. The shielding plate 51 is made of an L-shaped plate member that protrudes from the left side surface toward the cooking chamber 11, and the steam introduced from the steam inlet 11 c rides on the air blown by the blower fan 20 and directly reaches the internal temperature sensor 50. The water droplets introduced together with the steam from the steam inlet 11c are not blown by the blower fan 20 and do not hit the internal temperature sensor 50. Further, since the shielding plate 51 blocks the position on the heater 30 side of the internal temperature sensor 50, the internal temperature sensor 50 is difficult to detect the radiant heat of the heater 30.

  As shown in FIGS. 1 and 2, the air supply / exhaust duct 60 is for supplying and discharging air into the cooking chamber 11, and is provided with an air supply / exhaust tube 61 and a butterfly provided in the air supply / exhaust tube 61. The damper 62 includes a valve 62 and a damper motor 63 that rotates the damper 62. As shown in FIGS. 2 and 3, the air supply / exhaust tube 61 is connected to an air supply / exhaust port 11 d formed on the left side of the cooking chamber 11 on the heating space 11 b side. Note that the air supply / exhaust port 11 d is formed at a position on the back side of the blower fan 20. The damper 62 is rotatably provided at an intermediate portion of the air supply / exhaust cylinder 61 and adjusts the amount of air passing through the air supply / exhaust cylinder 61 by changing the opening degree by the operation of the damper motor 63. . When the fan 62 is rotated in the heating cooker 10 and cooking is performed, if the damper 62 is opened so that the inside of the air supply / exhaust tube 61 can be ventilated, the outside air outside the cooking chamber 11 is blown by the blower fan 20. Is introduced into the cooking chamber 11 through the air supply / exhaust tube 61. In addition, when cooking is performed without rotating the blower fan 20 in the heating cooker 10, if the damper 62 is opened so that the air supply / exhaust cylinder 61 can be ventilated, the air in the cooking chamber 11 is The steam supplied from the steam generator 40 or the steam generated from the food stored in the cooking space 11 a is discharged out of the cooking chamber 11 through the supply / exhaust tube 61.

  As shown in FIGS. 1 to 3, the discharge path 70 discharges water in the cooking chamber 11 and discharges air containing steam, and mainly includes a discharge pipe 71, a discharge tank 72, and an exhaust cylinder 74. It consists of. As shown in FIG. 2, the discharge pipe 71 is composed of a substantially L-shaped pipe member that is a vertical portion extending downward from the lower surface of the cooking chamber 11 and a horizontal portion that bends and extends to the left, with one end side being a cooking chamber. 11 is connected to an in-compartment drain port 11 e formed on the lower surface of the storage 11, and the other end is connected to the discharge tank 72. As shown in FIG. 2, the horizontal portion of the discharge pipe 71 has a discharge tank 72 provided with a drain port 72b from the interior drain port 11e side so that water discharged from the cooking chamber 11 does not accumulate and remain. Inclined downward to the side.

  The discharge tank 72 has a substantially box shape with a detachable lid 73 on the upper part, and the other end side of the discharge pipe 71 is connected to a connection cylinder portion 72 a formed on the front side wall of the discharge tank 72. Yes. As shown in FIG. 4, the discharge tank 72 has a drain port 72 b in the lower part of the rear side portion and an exhaust port 73 a in the upper lid 73. The drain port 72b of the discharge tank 72 is for discharging the water sent from the cooking chamber 11 through the discharge pipe 71 to the outside of the heating cooker 10, and the drain port 72b of the discharge tank 72 heats water. A discharge hose (not shown) for discharging outside the cooking device 10 is connected. The exhaust port 73 a of the discharge tank 72 is for discharging air containing steam sent from the cooking chamber 11 through the discharge pipe 71 to the outside of the heating cooker 10. An exhaust pipe 74 for discharging air containing steam to the outside of the heating cooker 10 is connected. Further, the lid 73 of the discharge tank 72 is formed with a connection port 73d connected to the drain port of the steam generating device 40 in front of the exhaust port 73a. The lower portion of the discharge tank 72 is inclined downward from the front side, which is the drainage port 11e side, to the rear side, which is the drainage port 72b side, so that the water discharged from the cooking chamber 11 does not accumulate and remain. Yes.

  As shown in FIG. 4, in the discharge tank 72, a discharge path temperature sensor 75 is provided in front of the drain port 72b and the exhaust port 73a. The discharge path temperature sensor 75 detects the temperature of the air containing the steam sent from the cooking chamber 11 through the discharge pipe 71, and for example, a thermocouple is used. The discharge path temperature sensor 75 is located upstream of the drain port 72b and the exhaust port 73a in the flow of air containing steam discharged from the internal drain port 11e in the discharge tank 72, and from the drain port 72b by natural convection. When the air outside the cooking device 10 flowing into the discharge tank 72 is discharged from the exhaust port 73a, it is provided at a position not on the path through which the air passes.

  As shown in FIG. 4, the discharge path temperature sensor 75 has a bar-shaped temperature sensing part 75a that detects the temperature at the tip, and the temperature sensing part 75a at the tip is on the upper side. It stands up in the lower part of the discharge tank 72. A conical protrusion 72 c is formed at a position where the discharge path temperature sensor 75 is erected at the lower part of the discharge tank 72, and water flowing through the discharge tank 72 is formed in the protrusion 72 c of the discharge path temperature sensor 75. This prevents the temperature sensing portion 75a from being cooled by contacting the lower portion, and prevents the discharge path temperature sensor 75 from being able to accurately detect the temperature of air containing steam.

  As shown in FIGS. 5 and 6, an annular water droplet guiding portion 73 b is formed on the upper lid 73 of the discharge tank 72 above the discharge path temperature sensor 75. The annular water droplet guiding portion 73 b is formed so as to protrude downward to the periphery immediately above the discharge path temperature sensor 75, and water droplets condensed on the lower surface of the lid 73 at the top of the discharge tank 72 are discharged to the discharge path temperature sensor 75. Is to prevent water droplets from dropping directly onto the discharge path temperature sensor 75.

  As shown in FIGS. 4 to 6, the lid 73 at the top of the discharge tank 72 is provided with a watering nozzle 76 for sprinkling water into the discharge path temperature sensor 75 on the left side of the discharge path temperature sensor 75. The watering nozzle 76 is connected to a water supply source such as a water supply (not shown), and the watering port 76 a of the watering nozzle 76 is directed to the temperature sensing part 75 a of the discharge path temperature sensor 75. The watering nozzle 76 sprays water supplied from the water supply source to the temperature sensing part 75a of the discharge path temperature sensor 75 from the water supply port 76a by opening the watering valve 76b.

  The control device 80 includes a microcomputer. As shown in FIG. 7, the fan motor 21, the heater 30, the steam generator 40, the internal temperature sensor 50, the damper motor 63, the discharge path temperature sensor 75, and the water spray valve 76b. And connected to. The control device 80 stores a cooking program in a memory (not shown), and controls the operations of the fan motor 21, the heater 30, the steam generator 40, and the damper motor 63 based on the cooking program. Specifically, the control device 80 includes control means for controlling the operation of the heater 30 so that the temperature detected by the internal temperature sensor 50 becomes a predetermined temperature based on the cooking program. Further, the control device 80 calculates a vapor concentration in the cooking chamber 11 from the correlation between the detected temperatures of the internal temperature sensor 50 and the discharge path temperature sensor 75, and the vapor concentration calculated by the calculation unit. And a control means for controlling the operation of the steam generator 40 and the operation of the damper motor 63 so as to achieve a predetermined amount of steam concentration prescribed in the cooking program. Further, the control device 80 opens the water spray valve 76b to sprinkle water in the temperature sensing portion 75a of the discharge path temperature sensor 75, and the temperature detected by the discharge path temperature sensor 75 is, for example, 120 ° C. to 90 ° C. as a predetermined temperature. Computation means for calculating the vapor concentration by measuring the time required for the temperature detected by the discharge path temperature sensor 75 to return to the original temperature of 120 ° C. by a timer (not shown) when the temperature is lowered once. Yes.

  The operation of the cooking device 10 configured as described above will be described. In the heating cooker 10, when the blower fan 20, the heater 30, and the steam generator 40 are operated, hot air containing steam is supplied to the cooking space 11a of the cooking cabinet 11, and is accommodated in the cooking space 11a. Ingredients are cooked. At this time, the control device 80 controls the operation of the fan motor 21 and the heater 30 based on the detected temperature of the internal temperature sensor 50 so as to be a predetermined temperature specified in the cooking program, and is specified in the cooking program. The operation of the steam generator 40 and the damper motor 63 is performed based on the steam concentration calculated from the correlation between the detected temperatures of the interior temperature sensor 50 and the discharge path temperature sensor 75 so as to obtain a predetermined steam concentration. I have control.

  When the food is cooked as described above in the heating cooker 10, the air in the cooking chamber 11 includes the steam supplied from the steam generator 40 and the steam generated from the food during cooking. . The air containing the vapor | steam in the cooking chamber 11 is discharged | emitted out of the heating cooker 10 through the discharge path 70 from the discharge port 11e in a warehouse. More specifically, the air containing the steam in the cooking chamber 11 is sent into the discharge tank 72 through the discharge pipe 71, and from the exhaust port 73 a of the discharge tank 72 through the exhaust pipe 74 to the outside of the heating cooker 10. Discharged.

  In addition, when the food is cooked as described above with the heating cooker 10, water droplets generated by condensation of water and steam generated from the food fall on the lower part of the cooking chamber 11. The water dropped to the lower part in the cooking chamber 11 is discharged out of the heating cooker 10 through the discharge port 70 from the internal drain port 11e. More specifically, the water dropped to the lower portion of the cooking chamber 11 is sent into the discharge tank 72 through the discharge pipe 71, and is discharged out of the heating cooker 10 from the drain port 72 b of the discharge tank 72.

  In the heating cooker 10 configured in this way, the air containing the steam in the cooking chamber 11 is discharged from the exhaust port 73a through the discharge pipe 71 and the discharge tank 72 of the discharge path 70 from the internal drain port 11e. However, the temperature inside the discharge tank 72 is higher than the outside due to the influence of air containing steam discharged from the cooking chamber 11, and depending on the amount of air flowing out from the cooking chamber 11, the external air may be Natural convection may flow into the discharge tank 72 from the drain 72b and be discharged from the exhaust 73a. Even if external air flows into the discharge tank 72 from the drain port 72b by natural convection and is discharged from the exhaust port 73a, the discharge path temperature sensor 75 is connected to the exhaust port 73a in the discharge tank 72 and drains. It is arranged on the upstream side with respect to the mouth 72b, and on the path through which the air passes when the air outside the cooking device 10 flowing into the discharge tank 72 from the drain outlet 72b by natural convection is discharged from the exhaust outlet 73a. Since the exhaust path temperature sensor 75 is provided at a position that is not present, the temperature of the air including the steam exhausted from the cooking chamber 11 is not affected by the temperature of the air flowing from outside the cooking device 10. It can be detected accurately.

  Moreover, in this heating cooker 10, since the lower part of the discharge pipe 71 and the discharge tank 72 of the discharge path 70 inclines downward from the internal drain port 11e toward the drain port 72b, it is discharged from the cooking chamber 11. Water is discharged from the drain port 72b without remaining in the discharge pipe 71 and the discharge tank 72 of the discharge path 70. As a result, the air containing the steam discharged from the cooking chamber 11 is not cooled by the water remaining in the discharge pipe 71 and the discharge tank 72 of the discharge channel 70, and the discharge channel temperature sensor 75 is disposed in the cooking chamber 11. It is possible to accurately detect the temperature of air containing steam discharged from the air.

  In addition, in this cooking device 10, the discharge path temperature sensor 75 has a rod-like shape and has a temperature sensing part 75a that detects the temperature at the tip thereof, and the discharge path temperature sensor 75 has a temperature sensing part 75a at the tip. It is erected and attached to the lower part in the discharge tank 72 so as to be on the upper side. Thereby, even if the water droplets condensed on the lid 73 at the upper part of the discharge tank 72 falls on the discharge path temperature sensor 75, the dropped water drops flow from the upper temperature sensing part 75a to the part other than the lower temperature sensing part. The discharge path temperature sensor 75 can accurately detect the temperature of the air containing the steam discharged from the cooking chamber 11.

  In the cooking device 10, the conical shape that prevents water passing through the discharge tank 72 from contacting the lower portion of the discharge path temperature sensor 75 at the position where the discharge path temperature sensor 75 in the discharge tank 72 is erected. The protrusion 72c is provided. Thereby, when the water discharged | emitted from the cooking chamber 11 passes the inside of the discharge tank 72, it does not contact the lower part of the discharge path | route temperature sensor 75 by the protrusion 72c. Therefore, the discharge path temperature sensor 75 is not cooled by the water passing through the discharge tank 72, and the discharge path temperature sensor 75 accurately detects the temperature of the air containing the steam discharged from the cooking chamber 11. Can do.

  Further, in the cooking device 10, water droplets condensed on the upper surface of the discharge tank 72 on the lower surface of the upper lid 73 in the discharge tank 72 fall around the discharge path temperature sensor 75. An annular water droplet guiding portion 73b is provided. As a result, the water droplets condensed on the lower surface of the upper lid 73 in the discharge tank 72 come into contact with the discharge path temperature sensor 75 by the annular water drop guiding portion 73b formed around the discharge path temperature sensor 75 to cool it. Therefore, the discharge path temperature sensor 75 can accurately detect the temperature of the air containing the steam discharged from the cooking chamber 11.

  Further, the water droplet guiding portion 73b of the present embodiment has an annular shape protruding downward around the periphery of the discharge path temperature sensor 75, but the present invention is not limited to this, and FIG. 8 or FIG. As shown in FIG. 6, water droplet guiding portions 73b1 and 73b2 having other shapes may be formed on the lower surface of the lid 73 at the top of the discharge tank 72. As shown in FIG. 8, the lower surface of the water droplet guiding portion 73 b 1 has a shape that is inclined downward from the front side toward the rear side above the discharge path temperature sensor 75, and the water droplet guiding portion 73 b 1 A water droplet condensed on the lower surface of the upper lid 73 is caused to fall around the discharge path temperature sensor 75 along the inclined surface to the rear.

  Further, as shown in FIG. 9, the water droplet guiding portion 73 b 2 has a conical shape with the top portion formed on the lower side in front of the upper side of the discharge path temperature sensor 75, and the water droplet guiding portion 73 b 2 is located on the upper portion of the discharge tank 72. Water droplets condensed on the lower surface of the lid 73 are caused to fall around the discharge path temperature sensor 75 in front of the conical surface. The water droplet guiding portions 73b1 and 73b2 can cause water droplets condensed on the lower surface of the lid 73 at the top of the discharge tank 72 to fall around the discharge path temperature sensor 75, and are similar to the water droplet guiding portion 73b of the present embodiment. An effect can be obtained.

  Thus, in the heating cooker 10 of this embodiment, since the discharge path temperature sensor 75 can accurately detect the temperature of the air containing the steam discharged from the cooking chamber 11, the control device 80 is The steam concentration can be accurately calculated from the correlation between the detected temperatures of the internal temperature sensor 50 and the discharge path temperature sensor 75, and the steam generator 40 and the damper are used based on the accurately calculated steam concentration. By controlling the operation of the motor 63, the inside of the cooking chamber 11 can be controlled to have a predetermined steam concentration.

  Further, in the heating cooker 10, a watering nozzle 76 for injecting water to the temperature sensing part 75 a of the discharge path temperature sensor 75 is provided in the upper part of the discharge tank 72, and the water spray port 76 a of the water spray nozzle 76 is provided in the discharge path temperature sensor. Since the water spray valve 76b is opened and water is sprayed onto the temperature sensing portion 75a of the discharge path temperature sensor 75, water can be reliably sprayed onto the temperature sensing portion 75a. The temperature detected by the path temperature sensor 75 can be reliably reduced.

(Second Embodiment)
FIG. 10 is a longitudinal sectional view of the discharge tank of the second embodiment taken along the line D-D of FIG. 1 as in FIG. 6 of the first embodiment, and the heating cooker 10A of the second embodiment mainly uses the discharge path. A part of the structure inside the discharge tank 72A of 70A is different from the attachment position of the discharge path temperature sensor 75A, and the discharge tank 72A and the discharge path temperature sensor 75A of the heating cooker 10A of the second embodiment will be described in detail below. Since it is the same as that of the heating cooker 10 of 1st Embodiment about description and other than that, it abbreviate | omits for details.

  The discharge tank 72A has a substantially box shape with a detachable lid 73A on the top, and the other end side of the discharge pipe 71 is connected to the connection cylinder portion 72Aa formed on the front side wall of the discharge tank 72A. Yes. The discharge tank 72A has a drain port 72Ab in the lower part of the rear side and an exhaust port 73Aa in the upper lid 73A. The drain port 72Ab of the discharge tank 72A is for discharging the water sent from the cooking chamber 11 through the discharge pipe 71 to the outside of the heating cooker 10A, and the drain port 72Ab of the discharge tank 72A is heated with water. A discharge hose (not shown) is connected to the outside of the cooker 10A. The exhaust port 73Aa of the discharge tank 72A is for discharging the air containing the steam sent from the cooking chamber 11 through the discharge pipe 71 to the outside of the heating cooker 10A, and the exhaust port 73Aa of the discharge tank 72A includes An exhaust pipe 74 is connected to discharge air containing steam to the outside of the heating cooker 10A. The lower portion of the discharge tank 72A is inclined downward from the front side, which is the drainage port 11e side, to the rear side, which is the drainage port 72Ab side, so that the water discharged from the cooking chamber 11 does not collect and remain. Yes. Further, an insertion hole 73Ac for attaching the discharge path temperature sensor 75A to the front side portion which is upstream of the drain port 72Ab and the exhaust port 73Aa is formed in the lid 73A on the upper side of the discharge tank 72A.

  A discharge path temperature sensor 75A is provided on the front side of the drain port 72Ab and the exhaust port 73Aa in the upper lid 73A of the discharge tank 72A. The discharge path temperature sensor 75A detects the temperature of air containing steam sent from the cooking chamber 11 through the discharge pipe 71. For example, a thermocouple is used. The discharge path temperature sensor 75A is located upstream from the drain port 72Ab by natural convection in the flow of air containing steam discharged from the drain port 72Ab and the exhaust port 73Aa in the discharge tank 72A. When the air outside the cooking device 10A flowing into the discharge tank 72A is discharged from the exhaust port 73Aa, it is provided at a position not on the path through which the air passes.

  The discharge path temperature sensor 75A has a temperature sensing portion 75Aa that has a rod shape and detects the temperature at the tip thereof, and the temperature sensing portion 75Aa at the tip is located on the lower side without contacting the lower portion of the discharge tank 72A. It is inserted in insertion hole 73Ac so that it may become, and it is attached to lid 73A of the upper part of discharge tank 72A. An annular water droplet guiding portion 73Ab is formed around the discharge path temperature sensor 75A on the lower surface of the upper lid 73A of the discharge tank 72A. The annular water droplet guiding portion 73Ab is formed so as to protrude downward around the discharge path temperature sensor 75A, and the water droplets condensed on the lower surface of the lid 73A at the top of the discharge tank 72A are surrounded by the periphery of the discharge path temperature sensor 75A. This is to prevent the water droplets from dropping along the discharge path temperature sensor 75A and cooling the discharge path temperature sensor 75A. The discharge path temperature sensor 75A is provided with a water droplet flow prevention member 75Ab in the middle portion above the temperature sensing portion 75Aa at the tip. The water droplet flow prevention member 75Ab has an inverted funnel shape, and when water droplets condensed on the lower surface of the upper lid 73A of the discharge tank 72A fall through the discharge path temperature sensor 75A, it flows down to the temperature sensing portion 75Aa. Is to prevent. When the water droplets condensed on the lower surface of the upper lid 73A of the discharge tank 72A fall through the discharge path temperature sensor 75A, the water drops flow through the conical surface of the water drop flow preventing member 75Ab and do not flow through the temperature sensing portion 75Aa. Therefore, the temperature sensing part 75Aa of the discharge path temperature sensor 75A is not cooled by the water droplets flowing down, and the discharge path temperature sensor 75A is the temperature of the air containing the steam discharged from the cooking chamber 11. Can be accurately detected.

  The upper cover 73A of the discharge tank 72A is provided with a watering nozzle 76 for sprinkling water into the discharge path temperature sensor 75A on the left side of the discharge path temperature sensor 75A. Connected to water supply. In the water spray nozzle 76, the water spray port 76a is directed to the temperature sensing portion 75Aa of the discharge path temperature sensor 75A, and the water supplied from the water supply source opens the water spray valve 76b to open the water discharge path temperature sensor from the water spray port 76a. Water is sprayed on the 75A temperature sensing part 75Aa.

  In the heating cooker 10A of the second embodiment configured as described above, the discharge path temperature sensor 75A has a rod-like shape and has a temperature sensing part 75Aa that detects the temperature at the tip, and a lid on the upper part of the discharge tank 72A. An insertion hole 73Ac for inserting the discharge path temperature sensor 75A is formed in 73A, and the discharge path temperature sensor 75A is arranged such that the temperature sensing part 75Aa at the tip is on the lower side without contacting the lower part of the discharge tank 72A. It is inserted into the insertion hole 73Ac and attached to the upper lid 73A of the discharge tank 72A. Thereby, the discharge path temperature sensor 75A can be easily attached to the lid 73A at the upper part of the discharge tank 72A. In addition, the discharge tank 72A has an insertion hole 73Ac for attaching the discharge path temperature sensor 75A to the upper lid 73A without forming a hole for attaching the discharge path temperature sensor 75A in the lower part. 72A has no risk of water leakage. Further, since the temperature sensing part 75Aa of the discharge path temperature sensor 75A is attached without contacting the lower part of the discharge tank 72A, it becomes difficult to be cooled by the water flowing under the discharge tank 72A, and the discharge path temperature sensor 75A is cooked. The temperature of the air containing the vapor | steam discharged | emitted from the inside of the store | warehouse | chamber 11 can be detected correctly.

  Further, in this cooking device 10A, the water droplets condensed on the lower surface of the upper lid 73A of the discharge tank 72A around the discharge path temperature sensor 75A are formed on the lower surface of the upper lid 73A of the discharge tank 72A. A water droplet guiding portion 73Ab that is dropped to the surroundings is provided. As a result, the water droplets condensed on the lower surface of the lid 73A at the top of the discharge tank 72A come into contact with the discharge path temperature sensor 75A and drop around it without cooling, so the discharge path temperature sensor 75A is in the cooking chamber 11. It is possible to accurately detect the temperature of air containing steam discharged from the air.

  Further, in this heating cooker 10A, on the upper side of the temperature sensing part 75Aa of the discharge path temperature sensor 75A, water droplets condensed on the lower surface of the upper lid 73A of the discharge tank 72A travel along the discharge path temperature sensor 75A and the temperature sensing part. A water droplet flow prevention member 75Ab that prevents the water from flowing down to 75a is provided. Thereby, even if water droplets condensed on the lower surface of the lid 73A on the upper part of the discharge tank 72A fall down along the discharge path temperature sensor 75A, the water drop flow preventing member 75Ab causes the water drops to flow into the temperature sensing portion 75Aa of the discharge path temperature sensor 75A. Since it does not flow down, the discharge path temperature sensor 75A can accurately detect the temperature of the air containing the steam discharged from the cooking chamber 11.

  Thus, in the heating cooker 10A of this embodiment, since the discharge path temperature sensor 75A can detect the exact temperature of the air containing the steam discharged from the cooking chamber 11, the control device 80 The concentration of the steam can be accurately calculated from the correlation between the detected temperatures of the temperature sensor 50 and the discharge path temperature sensor 75A, and the steam generator 40 and the damper motor 63 can be calculated based on the accurately calculated concentration of the steam. By controlling the operation, the inside of the cooking chamber 11 can be controlled to have a predetermined steam concentration.

  DESCRIPTION OF SYMBOLS 10 ... Cooking device, 11 ... Cooking chamber, 20 ... Blower fan, 30 ... Heater, 40 ... Steam generator, 50 ... Inside temperature sensor, 70, 70A ... Discharge route, 72b, 72Ab ... Drain outlet, 72c ... Projection 73a, 73Aa ... exhaust port, 73b, 73b1, 73b2 ... water drop guiding part, 75,73Ac ... insertion hole, 75A ... discharge path temperature sensor, 75a, 75Aa ... temperature sensing part, 75Ab ... water drop flow preventing member, 80 ... Control device.

Claims (9)

A cooking cabinet that contains ingredients and cooks,
A blower fan for circulating the air in the cooking chamber;
A heater for heating the inside of the cooking chamber;
A steam generator for supplying steam into the cooking chamber;
A drain outlet that is led out from a drain outlet formed in the lower portion of the cooking chamber and discharges water in the cooking chamber to the outside of the cooking chamber, and air containing steam in the cooking chamber is discharged outside the cooking chamber. An exhaust path with an exhaust port;
A discharge path temperature sensor that detects the temperature of air containing steam that is provided in the discharge path and is discharged from the cooking chamber;
A cooking device comprising: a control device having a calculation means for calculating a concentration of steam in the cooking chamber based on at least a detection temperature of the discharge path temperature sensor;
The cooking device characterized in that the discharge path temperature sensor is arranged on the upstream side of the exhaust port and the drain port in the discharge path. The heating cooker according to claim 1, wherein
The cooking device according to claim 1, wherein the discharge path is inclined downward from the internal drainage port toward the drainage port. The heating cooker according to claim 1 or 2,
The discharge path temperature sensor has a rod-like shape and has a temperature sensing part that detects the temperature at the tip thereof,
The cooking device according to claim 1, wherein the discharge path temperature sensor is installed upright at a lower portion in the discharge path so that a temperature-sensing portion at the tip end is on the upper side. The cooking device according to claim 3,
Heating characterized in that a protrusion for preventing water passing through the discharge path from contacting the lower part of the discharge path temperature sensor is provided at a position where the discharge path temperature sensor is erected in the discharge path. Cooking device. In the heating cooker according to claim 3 or 4,
Heat cooking, characterized in that a water droplet guiding part is provided above the discharge path temperature sensor, and a water droplet guide unit is provided above the discharge path temperature sensor to drop water droplets condensed at the upper part of the discharge path temperature sensor around the discharge path temperature sensor. vessel. The heating cooker according to claim 1 or 2,
The discharge path temperature sensor has a rod-like shape and has a temperature sensing part that detects the temperature at the tip thereof,
An insertion hole for inserting the discharge path temperature sensor is formed in the upper part of the discharge path,
The discharge path temperature sensor is inserted into the insertion hole and attached to the upper part in the discharge path so that the temperature-sensing part of the tip part is on the lower side without contacting the lower part of the discharge path. A heating cooker. The heating cooker according to claim 6, wherein
Heat cooking, characterized in that a water droplet guiding part is provided around the discharge path temperature sensor around the discharge path temperature sensor to allow water droplets condensed at the upper part of the discharge path to fall around the discharge path temperature sensor. vessel. The cooking device according to claim 6 or 7,
Provided above the temperature sensing part of the discharge path temperature sensor is a water drop prevention member that prevents water droplets condensed at the upper part of the discharge path from flowing down to the temperature sensing part through the discharge path temperature sensor. A cooking device characterized by. In the heating cooker according to any one of claims 3 to 8,
A cooking nozzle characterized in that a watering nozzle for sprinkling water is provided at a temperature sensing part of the discharge path temperature sensor at an upper part of the discharge path, and the watering nozzle of the watering nozzle is arranged to face the temperature sensing part. vessel.

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