JP2019058500A - Continuous type electric oven - Google Patents

Abstract

To provide a continuous type electric oven that can cook food with a tray, and can adjust doneness.SOLUTION: A continuous type electric oven 1 comprises a casing 20 comprising an inlet window 22 and an outlet window 24, transfer means 41 for transferring food from the inlet window 22 to the outlet window 24, and a lamp heater 50 provided inside the casing 20. The transfer means 41 includes a plurality of rollers 46 arranged so as to be capable of rotating around their central axes and capable of sending the food in order.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a continuous electric oven for cooking food.

As a continuous electric oven, what is described in JP-A-2-172420 (Patent Document 1) is known.
In this continuous electric oven, a resistance heating electric heater and a reflector are disposed on a ceiling in a casing, and a cylindrical net-like basket for holding food is disposed below the spiral heater and a guide rail. Ru. The basket is rotated forward by the spiral conveyor, and the food in the basket is cooked by the electric heater.

JP-A-2-172420

In the above-mentioned continuous electric oven, although the food is continuously cooked, it is difficult to cook food with a plate, such as a steak plate or a pizza plate, since it is put into a basket moving forward while rotating.
In addition, since the output of the heater is constant and the basket travels along a predetermined path, it is difficult to control the degree of roasting such as steak rare and medium.
Therefore, the main object of the present invention is to provide a continuous electric oven capable of cooking food with a plate and capable of adjusting the degree of baking.

The invention according to claim 1 comprises a casing having an inlet portion and an outlet portion, transport means for transporting food from the inlet portion to the outlet portion, and an electric heater provided inside the casing. The conveying means is characterized in that it comprises a plurality of rollers which are rotatable around their own central axis and are arranged to be able to feed the food in order.
The invention according to claim 2 is characterized in that, in the above-mentioned invention, the casing is provided with a takeout window for taking out the food which is being conveyed by the conveying means.
The invention according to claim 3 is characterized in that, in the above-mentioned invention, the electric heaters are provided above and below the conveying means.
The invention according to claim 4 is characterized in that, in the above-mentioned invention, a heater for temperature maintenance for maintaining the temperature in the casing is provided on the outer wall surface of the casing.
According to a fifth aspect of the present invention, in the above-mentioned invention, the control means for controlling the electric heater and the heater for maintaining the temperature, a temperature sensor for detecting the temperature in the casing, and the inside of the casing from the inlet portion. An inlet sensor for detecting the introduction of the food into the housing, and the control means drives the heater for maintaining the temperature when the temperature in the casing grasped by the temperature sensor is lower than a predetermined temperature. The electric heater is driven when the introduction of the food into the casing is detected by the inlet sensor.

  One of the main advantages of the present invention is that a continuous electric oven is provided which is capable of cooking food with a plate and of adjustable baking.

It is a typical front view of a continuous type electric oven concerning the present invention. It is a typical right side view of a continuous type electric oven concerning the present invention. It is a typical top view of a continuous type electric oven concerning the present invention.

Hereinafter, an example of an embodiment according to the present invention will be described based on the drawings as appropriate together with a modified example thereof.
In addition, the said form is not limited to the following example and modification.

FIG. 1 is a schematic front view of the continuous electric oven 1 according to the present invention, FIG. 2 is a schematic right side view of the continuous electric oven 1, and FIG. 3 is a schematic view of the continuous electric oven 1 Top view. In addition, front and rear, right and left upper and lower sides in continuous type electric oven 1 are defined for convenience of explanation.
The continuous electric oven 1 includes a carriage 2, an oven main body 4 installed thereon, and control means 6 for controlling various members and portions.

  The dolly 2 is provided with four castors 10 and adjusting legs 12 and can be moved by the caster 10 if the lower end of the adjusting legs 12 is above the lower end of the caster 10, and the lower end of the adjusting legs 12 Of the caster 10 below the lower end of the caster 10, so that the caster 10 can not move and the continuous electric oven 1 is installed. The number of at least one of the caster 10 and the adjustment leg 12 may be increased or decreased or omitted.

  The oven main body 4 is disposed at the upper and lower sides of the casing 20, the casing 26 and the carriage 26 provided so as to pass through the entrance window 22 and the exit window 24 of the food opened to the left and right. The upper electric heater unit 28, the lower electric heater unit 30, and the fan unit 32 disposed on the rear side are provided.

The casing 20 is in the form of a long box on the left and right, and a heat insulating material (not shown) is disposed in the wall.
The entrance window 22 as the inlet of the casing 20 is suitable for continuous cooking flowing from the left to the right of the food with a plate, and restricts heat leakage as much as possible while securing many types of food with a plate that can be introduced As you do, it extends back and forth. An outlet window 24 as an outlet extends in the same manner back and forth. At least one of the entrance window 22 and the exit window 24 may be provided with a door that opens or closes automatically or manually.
In the casing 20, a temperature sensor 34 for measuring the temperature (oven temperature) in the casing 20 is disposed.

The carrier table 26 has a base 40 having an opening extending from a portion adjacent to the entrance window 22 to a portion adjacent to the exit window 24 through the inside of the casing 20 and a roller hearth type disposed inside or around the opening. And transport means 41.
The upper surface on the left side of the opening of the stand 40 and the portion extending from the entrance window 22 of the casing 20 is an introduction stand 42 for placing the food to be introduced into the casing 20. A portion of the upper surface of the casing 20 which comes out of the exit window 24 of the casing 20 is a holding stand portion 43 on which the transported and heated food is placed. In the vicinity of the entrance window 22, an entrance sensor 44 for detecting a food introduced from the introduction stand 42 into the casing 20 (conveying means 41) is installed.
The transport means 41 has a plurality of cylindrical rollers 46 extending in the front-rear direction. The front and rear end portions of each roller 46 are rotatably supported at the front and rear peripheral portions of the opening of the base 40, and the central portion other than the front and rear ends of each roller 46 is disposed in the opening of the base 40. Is rotatable around its own central axis. A gear (not shown) is formed at the rear end of each roller 46, and a chain (not shown) is hung on the gears of all the rollers 46, and a motor (not shown) connected to a power supply (not shown) Thus, the rollers 46 are rotationally driven through the chain and gears. Here, all the rollers 46 are arranged side by side with the same distance from each other, and arranged so as to sequentially feed food (including food with a plate) whose maximum dimension is larger than the distance. The number, intervals, driving system, arrangement, and the like of the rollers 46 may be variously changed, and the shapes and the like of some of the plurality of rollers 46 may be different from the shapes and the like of the other rollers 46 The rollers 46 may be arranged to feed food along a virtual fold line or curve.
An upper end (a line segment in the front-rear direction) of each roller 46, an upper surface of the introduction stand 42, and an upper surface of the holding stand 43 are included in one virtual horizontal plane. Among the planes, the upper surface portion of the introduction base portion 42, the upper surface portion of the holding base portion 43, and the portion sandwiched by these are the transport surface C.
Partial (one each) rollers 46 at the left and right end portions of the conveying means 41 are disposed outside the casing 20, and some (one each) rollers 46 adjacent thereto are the entrance window 22 and the exit window 24. Placed inward of the

The upper electric heater unit 28 has a plurality (three) of lamp heaters 50 (electric heaters) and a heater 52 for temperature maintenance.
Each lamp heater 50 emits an infrared ray, and here emits a mid-infrared ray having a wavelength between the near infrared ray (wavelength 1 to 3 microns) and the far infrared ray (wavelength 6 to 12 microns) , And a sheath heater (cartridge heater) extending in the left and right direction. The left end of each lamp heater 50 is in the left wall of the casing 20 and reaches the upper side of the inlet window 22, and the right end (heater terminal 54) is the right wall of the casing 20 and is exposed from the upper side of the outlet window 24. Between the transport surface C and the ceiling of the casing 20 (adjacent to the transport surface C). Each lamp heater 50 is connected to a power supply (not shown) via a heater terminal 54, and emits infrared light at a portion disposed in the casing 20. The three lamp heaters 50 are arranged above a virtual position at which the length of the roller 46 is divided into four equal parts, and are arranged in front and back.
The temperature maintaining heater 52 is a heater for maintaining the oven temperature, and here is a planar heater in which a planar heating wire (nichrome wire) circuit is sandwiched between two planar micas (insulators). . The temperature maintaining heater 52 is installed on the ceiling of the casing 20 (the outer wall surface of the casing 20). The temperature maintaining heater 52 is connected to a power supply (not shown) and generates heat.
The lower electric heater unit 30 is similar to the upper electric heater unit 28, and the lamp heater 50 and the temperature maintaining heater 52 are disposed symmetrically with respect to the conveyance surface C. The temperature maintaining heater 52 of the lower electric heater unit 30 is installed on the bottom surface of the casing 20 (the outer wall surface of the casing 20).
The shape and size of at least one of each lamp heater 50 and each temperature maintaining heater 52, the number of installation, the wavelength of infrared rays to be emitted, the type of heat, etc. can be changed variously, and a plurality of lamps The shape or the like of a part of the heater 50 or the like may be different from the shape or the like of another lamp heater 50 or the like. Also, one of the upper electric heater unit 28 and the lower electric heater unit 30 may be omitted. The lamp heaters 50 may be provided to be aligned in the left-right direction (longitudinal direction), and in this case, the lamp heaters 50 on the left side (the inlet window 22 side) have relatively strong (or weak) output. The lamp heater 50 on the right side (outlet window 24 side) may be relatively weak (or strong) in output.

The fan portion 32 has an air vent 60 opened in the rear wall of the casing 20, a louver 62 for opening and closing the air vent 60, and a box-like duct 64 opened at the upper end to cover the air vent 60. , And a plurality of (four) fans 66 disposed at the lower end in the duct 64.
The louver 62 is manual, and is adjusted by the user to be in an open state (or a desired degree of openness) or a closed state at the time of non-operation (at the time of non-heating). The louvers 62 may be motorized, and the number of louvers may be changed variously.
Each fan 66 is a heat resistant fan and is connected to a power supply. The four fans 66 are arranged side by side, and driving thereof forms a wind from the outside through the duct 64, the vent 60, the louver 62, through the inside of the casing 20, and out of the inlet window 22 and the outlet window 24. (See arrow W in FIG. 2). Note that the number, type, arrangement, and the like of the fans 66 and the ducts 64 may be variously changed.

Further, an extraction window 70 is formed on the front wall of the casing 20, and an extraction door 72 which can be opened and closed is installed in the extraction window 70.
The take-out window 70 occupies substantially the entire upper half of the front wall of the casing 20 and has a rectangular shape extending in the left and right direction, and the lower side is disposed at the same position as the transport surface C in the vertical direction. The shape, size, arrangement, number of installation, etc. of the extraction window 70 may be changed variously.
The takeout door 72 has substantially the same size as the takeout window 70, and is installed so as to be openable and closable around the lower side by a hinge (not shown) connecting the lower side thereof and the lower side of the takeout window 70. The take-out door 72 is rotatable around the lower side from a substantially horizontal posture to a substantially vertical posture to close the take-out window 70. A handle, not shown, is attached to the front of the takeout door 72. The shape and size of the takeout door 72, the arrangement, the number of installation, the arrangement of the hinges, the type of the opening and closing mechanism, and the presence or absence of the handle may be variously changed.

The control means 6 includes a computer (not shown) and a control panel 80. The control means 6 is electrically connected to the temperature sensor 34, the motor of the conveying means 41, the inlet sensor 44, the upper and lower lamp heaters 50 and the temperature maintaining heater 52, and the fans 66.
The computer is disposed in the carriage 2.
On the other hand, the control panel 80 is installed on the front side of the carriage 2 and receives user's operation.
The control means 6 may be disposed outside the carriage 2 or may be other than the combination of the computer and the control panel 80. Moreover, it may be distributed to a plurality of members or parts.

Hereinafter, an operation example of such a continuous electric oven 1 will be described.
After the user adjusts the louver 62, when the power switch of the control panel 80 is turned on with the takeout door 72 closed, the control means 6 drives the motor of the conveying means 41 to set all the rollers 46 to a predetermined value. Rotate at a rotational speed of Further, the control means 6 drives the fans 66 to introduce outside air into the casing 20 to generate a wind.
Furthermore, the control means 6 drives the upper and lower temperature maintaining heaters 52 under the following conditions. That is, if the oven temperature detected by the temperature sensor 34 is less than a predetermined temperature (for example, 50 ° C.) higher than room temperature, the upper and lower temperature maintaining heaters 52 are driven (turned on) and the temperature is equal to or higher than the predetermined temperature The driving of the upper and lower temperature maintaining heaters 52 is stopped (turned off). Immediately after the power switch is turned on, the upper and lower temperature maintaining heaters 52 are turned on since the oven temperature is usually around room temperature. Since the upper and lower temperature maintaining heaters 52 are turned on until the oven temperature reaches a predetermined temperature, the oven temperature is maintained at about the predetermined temperature. The control means 6 turns on the upper and lower temperature maintaining heaters 52 when the oven temperature is lower than the specified temperature between room temperature and a predetermined temperature, and turns on only one of the temperature maintaining heaters 52 when the oven temperature is higher than the specified temperature. For example, different control conditions for the temperature maintaining heater 52 may be used.

The user appropriately confirms that the oven temperature has become appropriate, and transfers the dished food to be heated from the introduction platform 42 onto the conveying means 41. The food with a plate is, for example, pizza on a flat plate, steak on a flat plate, doria in a deep plate, chicken in a plate-like or lid-like box-like, lidless box-like basket (籠 plate). The plate (the maximum dimension other than the depth) is larger than the distance between the rollers 46 of the conveying means 41. Also, the dish is heat resistant. The food with a plate is conveyed by the conveying means 41 sequentially to the right at a predetermined speed. The conveyance speed of the plate-equipped food by the conveyance means 41 may be selectable by providing the conveyance speed switching switch on the control panel 80. In this case, the control means 6 controls the rotational speed of the motor of the transport means 41 in accordance with the selected transport speed.
The control means 6 turns on the upper and lower lamp heaters 50 when receiving the detection signal from the inlet sensor 44 related to the food with a plate transferred to the conveying means 41. The dished food transported into the casing 20 from the entrance window 22 is heated by the infrared rays from the upper and lower lamp heaters 50 or the heat or the hot air in the casing 20 while appropriately accompanied by heating by radiant heat from the temperature maintaining heater 52. The food is cooked while being conveyed by the conveying means 41.
At this time, since the oven temperature is higher than the room temperature by the temperature maintaining heater 52, the heating by the lamp heater 50 more rapidly extends to the dished food. A relatively high output temperature maintenance heater 52, rather than a relatively high output lamp heater 50 driven at low power to maintain the oven temperature, in order to burn or burn in. If the oven temperature is maintained, the thermal efficiency is better and easier to control. Furthermore, the infrared rays from the lower lamp heater 50 and the radiant heat of the temperature maintaining heater 52 directly act on the plate-mounted food from between the rollers 46, and by installing the upper and lower lamp heaters 50, compared to the case where only one is installed. The cooking can be performed efficiently in a short time. Also, in the case where the transport means 41 is a set of rollers 46 rotating around the central axis at a fixed position and is a net conveyor for driving an endless track net (from the inlet and outlet of the casing to facilitate taking in and out In contrast to the case where the components are moved out of the casing 20, there is no heat transfer from the components out of the casing 20, and the thermal efficiency is excellent. Furthermore, since the upper and lower lamp heaters 50 are electric heaters that generate heat by electric power, the amount of ventilation of the installation location of the continuous electric oven 1 is smaller than in the case of a gas heater that burns gas and generates heat. The energy required for air conditioning and the operation noise of the air conditioning can be reduced.
Note that the conveyance means 41 may be turned on by receiving a detection signal from the entrance sensor 44. Also, as with the temperature maintaining heater 52, the conditions for turning on the upper and lower lamp heaters 50 may be changed based on the oven temperature and the like. A heater switch or a heater output changeover switch may be provided to individually turn on or switch at least one of the upper and lower temperature maintaining heaters 52 and the upper and lower lamp heaters 50.

Then, the dished food transported in the casing 20 eventually comes out of the exit window 24.
Since the food with a plate is kept in the casing 20 for a predetermined time by the conveyance means 41 operating at a predetermined conveyance speed, it can be cooked with a certain degree of baking without requiring any other operation only by introducing it into the conveyance means 41. Will come out to the holding stand 43. If the relationship between the staying time, the amount of heat required for the optimal cooking condition, and the outputs of the lamp heaters 50 and the heaters 52 for maintaining the temperature is properly set, the user places the food with a plate on the conveying means 41. It is possible to prevent excessive baking and to heat in a properly cooked state only by introducing the product, and during the heating, it is not necessary to take time and effort for the dished food, and other work can be performed. In addition, since the oven temperature is maintained by the temperature maintaining heater 52, the same finish is prepared even when the food with a plate is continuously introduced or intermittently introduced. Be done.
The control means 6 grasps that a specific time has elapsed from the reception time of the detection signal from the last entrance sensor 44 by its own timer, and turns the upper and lower lamp heaters 50 off. The specific time is set in consideration of the transport speed (the staying time in the casing 20), and is, for example, a time obtained by adding a predetermined additional time to the staying time.
In addition, an outlet sensor for detecting the food discharged from the inside of the casing 20 (the conveying means 41) to the holding stand 43 is installed in a portion adjacent to the outlet window 24. When the detection signal is received, the upper and lower lamp heaters 50 may be turned off. In this case, in consideration of the continuous introduction of the food with a plate, the control means 6 counts and stores the number of receptions of the detection signal from the inlet sensor 44 (introduction number), and the outlet sensor It is also possible to reduce the current number of introductions by 1 by the reception of the detection signal from the above, and to turn off the upper and lower lamp heaters 50 if the number of introductions becomes zero or does not fluctuate for a fixed time.

Also, the user can remove the plate-mounted food in the middle of transport in the casing 20 from the removal window 70 by opening the removal door 72. The user takes out, for example, a steak plate from the side near the entrance window 22 in the rare cooking state, takes out from the side near the exit window 24 in the medium rare to medium cooking state, or passes through the exit window 24 and holds the stand portion 43. It is possible to adjust the degree of baking of the food with a plate by taking out the food with a plate from the take-out window 70 as needed, such as making the medium or well-cooked state or the like. In addition, since the removal window 70 is closed by the removal door 72, it is possible to prevent heat leakage from the removal window 70 at the normal time.
The food with trays reaching the storage platform 43 and the food with trays removed from the removal window 70 are provided to the consumer by performing additional operations such as applying a sauce as appropriate.

Such a continuous electric oven 1 has the following effects.
That is, the continuous electric oven 1 includes a casing 20 having an inlet window 22 and an outlet window 24, a transport means 41 for transporting food from the inlet window 22 to the outlet window 24, and a lamp heater 50 provided inside the casing 20. And the transport means 41 includes a plurality of rollers 46 which are arranged to be rotatable around their own central axis and to be able to feed food sequentially.
Therefore, continuous heating of the food with a plate by the electric heater can be realized, heat leakage can be prevented, and air conditioning can be suppressed, so that the efficiency and the environment of the installation location are good.

Further, the casing 20 is provided with a takeout window 70 for taking out the food being conveyed by the conveying means 41. Thus, the cooking condition of the food can be adjusted.
Furthermore, the lamp heaters 50 are provided above and below the transfer means 41. Therefore, sufficient heating can be performed even if the transport speed is increased, and the heating time becomes shorter. Further, the infrared rays and radiant heat of the lower lamp heater 50 easily act on the food directly between the rollers 46, and the heating efficiency is further improved.
Furthermore, a heater 52 for maintaining the temperature in the casing 20 is provided on the outer wall surface of the casing 20. Therefore, the action of the lamp heater 50 spreads to the food more quickly. Also, whether or not the introduction of the food is continuous or intermittent, the food is finished in the same cooking condition.
In addition, the control means 6 for controlling the lamp heater 50 and the heater 52 for temperature maintenance, the temperature sensor 34 for detecting the temperature in the casing 20, and the inlet sensor for detecting the introduction of food into the casing 20 from the inlet window 22. 44, the control means 6 drives the temperature maintaining heater 52 if the temperature in the casing 20 grasped by the temperature sensor 34 is less than a predetermined temperature, and the inlet sensor 44 detects the inside of the food casing 20. When the introduction into the vehicle is detected, the lamp heater 50 is driven. Therefore, the lamp heater 50 and the heater 52 for temperature maintenance are automatically controlled in a state of excellent thermal efficiency and in a state of exerting heating with which the finish of the food is improved.

  1 · · Continuous electric oven, 6 · · Control means, 20 · Casing, 22 · · Entrance window (inlet portion), 24 · · Outlet window (outlet portion), 34 · · Temperature sensor, 41 · · Transportation means , 44 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · extraction window.

Claims (5)

A casing having an inlet and an outlet;
Transport means for transporting food from the inlet to the outlet;
An electric heater provided inside the casing;
Equipped with
A continuous electric oven characterized in that the transport means comprises a plurality of rollers which are rotatable about their own central axis and arranged to be able to feed the food sequentially. The continuous electric oven according to claim 1, wherein the casing is provided with a takeout window for taking out the food being conveyed by the conveying means. The said electric heater is provided in the upper and lower sides of the said conveyance means, The continuous-type electric oven of Claim 1 or Claim 2 characterized by the above-mentioned. The continuous electric oven according to any one of claims 1 to 3, further comprising a temperature maintaining heater for maintaining the temperature in the casing, on an outer wall surface of the casing. Furthermore, a control means for controlling the electric heater and the heater for maintaining the temperature, a temperature sensor for detecting the temperature in the casing, and an inlet sensor for detecting the introduction of the food into the casing from the inlet portion; Equipped with
The control means
The temperature maintaining heater is driven when the temperature in the casing grasped by the temperature sensor is less than a predetermined temperature,
The continuous electric oven according to claim 4, wherein the electric heater is driven when the introduction of the food into the casing is detected by the inlet sensor.

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