JP2005233466A5 - - Google Patents

Description

Heating device

  The present invention relates to a heating device such as a cooking device using steam.

  Conventionally, a heating cooking apparatus in this type of heating apparatus heats an object to be heated stored in a heating chamber by a heating means. As the heating means, a microwave, a heater, hot air, steam or the like is used.

As a cooking device that uses hot air and steam at the same time, a steam convection oven is the mainstream, and various methods are used for generating steam. As one of them, there has been known a technique in which water is atomized and sprayed into a preheated heating chamber and vaporized with air in the heating chamber (see, for example, Patent Document 1).
JP 2002-327922 A

  However, in the conventional configuration, the heating of the object to be heated is adjusted by changing the steam supply time, and some experience is required to adjust the completion of the object to be heated.

  This invention solves the said conventional subject, and it aims at providing the heating apparatus which can perform the steam heating suitable for to-be-heated material simply.

In order to solve the above-described conventional problems, a heating apparatus according to the present invention includes a steam generating unit that generates steam to be supplied into a heating chamber, a heating unit that heats air, steam, and an object to be heated in the heating chamber, and a heating chamber. A discharge port for discharging air and steam, a first detection means for detecting the amount of steam discharged from the discharge port, and the steam generation means and / or the heating means based on a signal from the first detection means Control means for controlling the amount of steam discharged from the discharge port on the basis of a signal from the first detection means, detecting the degree of condensation on the heated object and the end timing of the condensation step Alternatively, the amount of the object to be heated is estimated .

  As a result, the heating progress of the object to be heated can be estimated based on the temporal change in the amount of steam discharged from the discharge port, and optimal heating control according to the amount and type of the object to be heated can be performed. Heating can be used conveniently.

  The heating device of the present invention can easily perform steam heating suitable for the amount and type of the object to be heated.

1st invention is the heating chamber which accommodates to-be-heated material, the steam generation means which generate | occur | produces the vapor | steam supplied in the said heating chamber, the steam blower outlet which blows off the said steam in the said heating chamber, The air in the said heating chamber And heating means for heating the steam and the object to be heated, a discharge port for discharging air and steam in the heating chamber, a first detection means for detecting the amount of steam discharged from the discharge port, and the first Control means for controlling the steam generation means and / or the heating means based on a signal from the detection means, and the control means is a steam discharged from an outlet based on a detection signal from the first detection means. The amount of steam discharged from the outlet is characterized by detecting temporal changes in the amount and estimating the degree of condensation on the object to be heated and the end timing of the condensation process or the amount of the object to be heated. Subject to change Estimating the heating progress of the thermal material, it is possible to perform optimum control heating according to the amount and type of the article to be heated, it is possible to easily utilize the steam heating.

  According to a second aspect of the invention, in particular, in the first aspect of the invention, there is provided second detection means for detecting the temperature of air or steam in the heating chamber, and the control means is based on a signal from the first detection means in the first half of heating. A step of condensing the material to be heated by controlling the steam generation means and / or the heating means, and then controlling the steam generation means and / or the heating means based on a signal from a second detection means; The drying and baking processes can be performed reliably, and the range of use of steam heating can be expanded from steaming to baking.

  In a third aspect of the invention, in particular, in the first aspect of the invention, the discharge port is closed by providing an air flow generating means for creating a flow of air or steam in the heating chamber and a discharge port opening / closing means for opening and closing the discharge port. By simply circulating air or steam in the heating chamber, or by opening the discharge port and discharging air or steam from the heating chamber, control according to the heating method of steaming or baking is easily performed. Can do.

  According to a fourth aspect of the invention, in particular, in the third aspect of the invention, the control means controls the outlet opening / closing means to control the outlet opening when operating the airflow generating means during the execution of the control based on the signal of the first detecting means. By making the closed state, steam is diffused and convected into the heating chamber, so that the entire object to be heated can be optimally heated.

  According to a fifth aspect of the invention, in particular, in the third aspect of the invention, the control means controls the exhaust opening / closing means to control the exhaust when the airflow generation means is operated after the control based on the signal of the first detection means is completed. By making the outlet open, drying in the pottery cooking can be promoted.

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

(Embodiment 1)
1 and 2 show a heating apparatus according to Embodiment 1 of the present invention.

  The figure shows a heating cooker as an example of a heating device. In a main body 11 of the heating device, a door 12 for taking in and out the object to be heated 10 and a heating chamber 13 for placing and storing the object to be heated 10 therein. Is incorporated. Although not shown, a material having a heat insulating effect can be used in combination for the heating chamber 13.

  The heating chamber 13 is provided with an airflow generating means 14 that creates a flow of air or steam, sucks the air in the heating chamber 13, and blows out again from the outlets 15 a to 15 d into the heating chamber 13. Yes. Further, a heating means 16 is disposed on the upper wall surface of the heating chamber 13, and a heating means 17a and a heating means 17b are disposed on the inner wall surface. These heating means 16, 17 a and 17 b heat the air and steam in the heating chamber 13 and the object to be heated 10.

  Steam generating means 18 for generating steam to be supplied into the heating chamber 13 includes a water storage means 19, a water heating means 20 attached to the water storage means 19, a first steam pipe 21 and a second steam through which the generated steam passes. The steam pipe 22 and the steam heating means 23 are configured such that the generated steam is blown into the heating chamber 13 from a steam outlet 24 facing the heating chamber 13. The steam that can be supplied into the heating chamber 13 can be generated from saturated steam to superheated steam. When superheated steam is generated, the steam is heated by the steam heating means 23 when passing through the second steam pipe 22. Is done.

  The steam outlet 24 is provided with a blow direction changing means 24 a for changing the direction of the steam blown into the heating chamber 13. The blowing direction varying means 24a has a configuration that can vary the blowing direction of the steam vertically and horizontally, and can deflect and blow the steam in the direction in which the article to be heated 10 is placed and stored. .

  The heating chamber 13 is provided with second detection means 25 for detecting the temperature of air or steam in the heating chamber 13 or the temperature of the article to be heated 10. The second steam pipe 22 is provided with steam temperature detecting means 26 for detecting the steam temperature, and detects the steam temperature blown into the heating chamber 13.

  A discharge port 27 for discharging air and steam in the heating chamber 13 is provided with a discharge port opening / closing means 28 and first detection means 29 for detecting the amount of steam discharged from the discharge port 27. The discharge port 27 is disposed away from the steam outlet 24. If the outlet 27 is disposed close to the steam outlet 24, the steam may be discharged from the outlet 27 before the heating chamber 13 is filled with the steam. The outlet 24 and the outlet 27 are disposed on the wall surfaces facing each other.

  The operation unit 31 provided on the door 12 of the main body 11 is provided with a display unit 32, an automatic heating operation key 33, a manual heating setting key 34, a heating start key 35, a heating addition key 38, and the like. In the present embodiment, an example in which the operation unit 31 is disposed on the door 12 has been described. However, the operation unit 31 is not necessarily limited to the door 12.

  The control means 36 controls the steam generation means 18 and the heating means 16, 17a, 17b, the steam heating means 23, the outlet opening / closing means 28, and the blow direction changing means 24a based on the signal of the first detection means 29. Is. Further, the storage means 37 stores information on the type and amount of the object to be heated 10, the amount of steam input thereto, the heating temperature relative to the initial temperature, the temporal change in the amount of discharged steam, and the time required for the end of heating regarding automatic cooking. ing. Further, information from the operation unit 31, automatic heating conditions, control determination conditions, and the like are temporarily or permanently stored in the storage unit 37.

  Next, the operation | movement and effect | action are demonstrated about the heating apparatus which consists of the said structure.

  First, a method for estimating the heating progress of the article to be heated 10 will be described. When the object to be heated 10 is at a lower temperature than its own temperature, the steam condenses and condenses on the surface of the object to be heated 10, and has a characteristic of giving condensation heat to the object to be heated 10. The vapor condenses until the surface temperature of the article to be heated 10 reaches 100 ° C., and the condensation ends when the surface temperature exceeds 100 ° C. When steam is introduced into the heating chamber 13 by the heating start signal, the surface temperature of the object to be heated 10 is low, so that the amount of steam condensed on the surface of the object to be heated 10 is large and the amount of steam discharged from the discharge port 27 is small. . On the other hand, when the heating progresses and the surface temperature of the object to be heated 10 becomes 100 ° C. or higher, the condensation on the surface is small and the steam discharged from the discharge port 27 increases.

  In addition, when the object to be heated 10 is large or large, the condensation process is long, so that the time required until the discharged steam increases is long. On the other hand, when the object to be heated 10 is small or small, the condensing process is short, so the time required for discharging becomes short. When superheated steam is used, the condensation process takes a short time because the steam temperature is high. Conversely, when the steam temperature is low, the condensation process tends to be long.

  In this heating step, the control means 36 controls the operation of the heating means 16, 17a, 17b, the steam generating means 18, the steam heating means 23, and the blowing direction varying means 24a, and starts measuring the cooking time. The control means 36 detects a temporal change in the amount of steam discharged from the discharge port 27 based on the detection signal of the first detection means 29, and the degree of condensation on the heated object 10 and the end timing of the condensation process or The amount of the object to be heated 10 is estimated. That is, when it is determined that the amount of steam discharged from the discharge port 27 has increased from the initial stage of the heating process, it is estimated that the surface temperature of the article to be heated 10 has reached 100 ° C. and the condensation process has ended, and the process proceeds to the next heating process. To do.

  Next, estimation of the amount of the object to be heated 10 will be described.

  As described above, the storage unit 37 stores various types of information. Based on the detection signals of the steam temperature detection means 26 and the first detection means 29, the control means 36 ends the condensing step of the heated object 10, that is, until the surface temperature of the heated object 10 reaches 100 ° C. The time required for the time and the time are compared with the data stored in the storage means 37, and the amount of the object to be heated 10 is calculated.

  Next, estimation of the heating end time of the article to be heated 10 will be described.

  This estimation is performed based on the estimation of the amount of the object to be heated 10 described above, the time required for the object to be heated 10 to reach 100 ° C., and the input heating condition information. That is, when it is determined that the surface temperature of the article to be heated 10 has reached 100 ° C., the heating time required until the end of heating is estimated.

  In general, it is known that in cooking by steam injection, it takes four times as long as the time required for the condensation process until the water condensed in the article to be heated 10 evaporates and returns to the initial weight. That is, the control unit 36 calculates that the time required for moisture evaporation is four times as long as the previously estimated condensation step. When cooking that does not give a dark color is selected, the heating is finished when a time four times as long as the condensation process and the condensation process has elapsed. On the other hand, when the process of adding a burnt color (baking) such as baking cooking is selected, the supply of steam is stopped when the time four times as long as the condensation process and the condensation process has elapsed, and the heating means 16, 17a, and 17b are used. Heat. When the introduction of the steam is completed, the control of the first half of the heating based on the first detection unit 29 is switched to the second half of the heating control based on the second detection unit 25. The heating time required to darken the article to be heated 10 is stored in advance in the storage means 37 as information related to the atmospheric temperature of the heating chamber 13 and the time of the condensation process. The control means 36 selects and heats the time for the condensation process, that is, the heating time suitable for applying a dark color based on the amount of the object to be heated 10 and the information input at the time of heating. When the baking process is selected in the heating process, the control unit 36 increases the input power of the heating units 16, 17 a, and 17 b to burn the object to be heated 10.

  By performing the estimation of the series of heating progresses and the cooking control based on the estimation, it is possible to perform steam heating cooking suitable for the article to be heated 10 and to prevent overheating and insufficient heating of the article 10 to be heated. can do.

  Next, an example of a method for introducing steam different from the above will be described. The amount of input steam is increased in the initial stage of heating, and the amount of input steam is reduced in the later stage of heating than in the initial stage of heating. This is because the object to be heated 10 has a low temperature in the initial stage of heating, so that increasing the amount of steam can supply more condensation heat and shorten the heating time. On the other hand, in the latter stage of heating, when the heating color is made lighter or the heating is continued while preventing drying, the heating is performed while supplying less steam than in the initial cooking stage. When introducing steam at the time of preheating, it is possible to select a method such as continuously supplying a small amount of steam or after the heating chamber 13 reaches a certain temperature.

  When the user determines that the heating of the article to be heated 10 is insufficient after the heating, the heating additional key 38 is pressed. The control means 36 operates the steam generation means 18 and the steam heating means 23 only while the heating additional key 38 is pressed, and blows out the steam. The user can eliminate the shortage of heating by pressing the heating additional key 38 until the object to be heated 10 is completed as desired.

  Next, baked food will be described as an example for baked cooking.

  First, the user arranges the hamburger on the cooking plate and stores it in the heating chamber 13, and inputs the finished condition. In the case of hamburger, the burnt color of the surface is also a factor for promoting appetite, so the user selects the baking process. It is preferable to preheat the inside of the heating chamber 13 because a drop in steam temperature can be prevented. The control means 36 energizes the steam generation means 18 and detects from the signal of the steam temperature detection means 26 that the steam blown into the heating chamber 13 has reached a predetermined temperature. The control means 36 starts measuring the condensation process time from the time when the steam reaches a predetermined temperature. At this time, the steam to be blown out is preferably superheated steam. At the same time, the control unit 36 starts signal collection of the first detection unit 29. Since steam is blown out toward the hamburger, the amount of steam discharged from the outlet 27 is small in the signal of the first detection means 29 in the initial stage of heating.

When the control means 36 detects when the heating progresses and the amount of steam discharged by the signal from the first detection means 29 increases, the control means 36 determines that the object to be heated 10 has reached 100 ° C. and generates steam. The energization of the means 18 is turned off, the introduction of steam is stopped, and the process proceeds to the baking process. When baking is performed using superheated steam, the time for the baking process is determined by selecting information suitable for the information stored in the storage means 37 based on the previous condensation process time. On the other hand, when baking without using superheated steam, the one suitable for the information stored in the storage unit 37 is selected as the baking time from the ambient temperature of the heating chamber 13 detected by the second detection unit 25. In the baking process, the control means 36 controls the heating means 16, 17a and 17b.

  Next, the usage method of a heating apparatus is demonstrated.

  There are manual settings and automatic settings for heating conditions. In the case of manual setting, the control means 36 reads and stores the heating conditions (cooking process, heating time, heating temperature, size of the object to be heated 10) input from the manual heating setting key 34 of the operation unit 31 by the user. The data is stored in the means 37. On the other hand, in the case of automatic setting (selection of automatic cooking), when a desired result is input from the automatic heating operation key 33 of the operation unit 31, the control unit 36 selects a cooking program in the storage unit 37 from the input information. And cook. In the case of automatic cooking, based on a control program stored in the storage unit 37, the control unit 36 controls the operations of the heating units 16, 17 a and 17 b, the steam generation unit 18, and the steam heating unit 23.

  The control means 36 starts measuring the cooking time after receiving the heating start signal, and proceeds to the cooking process. When heating is started, the article to be heated 10 placed in the heating chamber 13 is heated by the heating means 16, 17a, 17b and the input steam.

  When “cancel heating” is selected prior to the heating start signal for both manual setting and automatic setting, the control means 36 returns the storage means 37 to the initial setting.

  When steam at 100 ° C. or higher is required, the control unit 36 detects the heating chamber 13 and the steam temperature based on signals from the second detection unit 25 and the steam temperature detection unit 26. The control means 36 variably controls the input power of the steam generation means 18 and the steam heating means 23 so that the steam reaches the set temperature based on the signal from the steam temperature detection means 26. Further, based on the signal from the second detection means 25, the control means 36 energizes the heating means 16, 17a, 17b when the inside of the heating chamber 13 has not reached the predetermined temperature. On the other hand, when the heating chamber 13 reaches a predetermined temperature, the heating means 16, 17a, and 17b are controlled so that the temperature of the heating chamber 13 is kept constant.

  In addition, the temperature of the heating chamber 13 and the to-be-heated object 10 measured by the 2nd detection means 25, setting conditions, and the blowing direction of a vapor | steam are displayed on the display part 32, and a user desires You can check their status when you do. By looking at the blowing direction of the display unit 32, the user can deflect the steam in an arbitrary direction by the blowing direction variable means 24a. When increasing the amount of steam, the drive power of the water heating means 20 is increased.

  Next, the display (notification) of the heating time is as follows.

  In the case of manual setting, a value obtained by subtracting the elapsed cooking time from the input heating time is displayed on the display unit 32 as the time until the end of heating. In the case of automatic setting, a value obtained by subtracting the elapsed heating time from the required heating time stored in advance for each menu is displayed as the time until the end of heating. The heating end notification may be displayed on the display unit 32, or may be notified by a buzzer, sound, or a combination thereof.

(Embodiment 2)
FIG. 3 shows a control block of the heating device according to the second embodiment of the present invention. Since the basic configuration is the same as that of the first embodiment, the same reference numerals are assigned to the same elements and the description thereof is omitted.

  In the present embodiment, the difference from the first embodiment is that the air flow generation means 14 provided in the heating chamber 13 is a steam generation means 18, heating means 16, 17a, 17b, a steam heating means 23, and a blowing direction variable. It is controlled by the control means 36 together with the means 24 a and the discharge opening / closing means 28 so as to create a flow of air or steam in the heating chamber 13. That is, when the airflow generation means 14 is operated during the heating period in which the cooking progress of the article to be heated 10 is estimated based on the signal from the first detection means 29, the discharge opening / closing means 28 is controlled to control the discharge opening 27. The closed state is established, and the steam is circulated and diffused in the heating chamber 13 to promote condensation on the entire object to be heated 10. In addition, after the operation of the airflow generation means 14 is stopped, the outlet 27 is opened, and the cooking progress is estimated based on the detection signal of the first detection means 29. Furthermore, when operating the airflow generation means 14 in the drying process after the control based on the detection signal of the first detection means 29 is completed, the discharge port 27 is opened and the steam in the heating chamber 13 is discharged in a short time. Thus, drying of the surface of the article to be heated 10 is promoted.

  Thus, by controlling the operation of the airflow generating means 14 in conjunction with the operation of the outlet opening / closing means 28, the steam can be quickly diffused into the heating chamber 13 in the steam heating, and the object 10 to be heated is uneven. Without heating. Moreover, since the development to baking cooking heating can be achieved, the utilization range of steam heating can be expanded. That is, when the object to be heated 10 is burnt as described in the first embodiment, the moisture evaporates from the surface of the object to be heated 10 when the condensing process is passed to the baking process. Since it is necessary to move moisture between the high humidity surface layer and the low humidity air layer in the vicinity of the surface of the object to be heated 10, the control means 36 operates the air flow generation means 14 to operate the surface of the object 10 to be heated. Heat exchange in the vicinity is performed quickly, and the firing, drying, and burning of the surface of the article to be heated 10 can be promoted.

  Next, a different control method for the airflow generation means 14 will also be described. In the case of baking cooking using superheated steam, the airflow of the superheated steam that is blown out may be stronger than the airflow generated by the airflow generating means 14. In addition, the airflow generated by the airflow generation unit 14 may disturb the flow of superheated steam that strikes the article to be heated 10. Therefore, in baking cooking, when the heating means 16, 17a and 17b are selected to be used, the steam discharged from the outlet 27 by the first detection means 29 increases, and the heating means 16, 17a and 17b are energized. Control is performed to stop the operation of the steam generation means 18 and start the operation of the airflow generation means 14 from the point of time when the switch is made.

  It is also possible to perform control without using steam for heating. In that case, the airflow generation means 14 may be operated in any process in the grill cooking.

  In each of the first and second embodiments described above, the control unit 36 controls both the steam generation unit 18 and the heating units 16, 17 a and 17 b based on the signal from the first detection unit 29. Either one, in particular, only the steam generation means 18 may be controlled.

  Although not shown, in order to prevent injury due to burns of the user, door detection means for detecting an open state is provided so that the user cannot open and close the door 12 when the steam is supplied. While it is open, the operation of the steam generating means 18 and the steam heating means 23 is stopped. Further, in the steam generation means 18, the water storage means 19 and the water heating means 20 are integrated, but a water supply means may be disposed between the water storage means 19 and the water heating means 20 and separated. Moreover, although the steam blower outlet 24 and the discharge port 27 were arrange | positioned in the side wall of the heating chamber 13, it does not restrict to this position.

  Furthermore, the heating means 16, 17a, 17b may employ either a flat heater or a tubular heater. Further, as long as the heating chamber 13 has sufficient heating capability, it is not always necessary to provide all of the heating means 16, 17 a and 17 b.

  As described above, since the heating device according to the present invention can perform optimum steam heating corresponding to the state of the object to be heated, the multi-function combined with a microwave oven, a microwave oven, an oven, a griller, or the like. It can be applied to attached cooking devices, drying devices, and high-speed heat treatment devices other than foods.

Sectional drawing of the heating apparatus in Embodiment 1 of this invention External perspective view of the heating device Control block diagram of heating device in embodiment 2 of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 To-be-heated object 13 Heating chamber 14 Airflow generation means 16, 17a, 17b Heating means 18 Steam generation means 23 Steam heating means 24 Steam outlet 25 Second detection means 26 Steam temperature detection means 27 Outlet 29 First detection means 36 Control means

Claims (5)

A heating chamber for storing an object to be heated; steam generating means for generating steam to be supplied into the heating chamber; a steam outlet for blowing the steam into the heating chamber; air and steam in the heating chamber; A heating means for heating an object, a discharge port for discharging air and steam in the heating chamber, a first detection means for detecting the amount of steam discharged from the discharge port, and a signal from the first detection means Control means for controlling the steam generation means and / or the heating means on the basis of the change, and the control means temporally changes the amount of steam discharged from the discharge port based on the detection signal of the first detection means. Is detected, and the degree of condensation on the object to be heated and the end timing of the condensation process or the amount of the object to be heated are estimated . A second detection unit configured to detect the temperature of air or steam in the heating chamber, and the control unit controls the steam generation unit and / or the heating unit based on a signal from the first detection unit in the first half of the heating; The heating device according to claim 1, wherein the steam generating means and / or the heating means are controlled based on a signal from the second detecting means. The heating apparatus according to claim 1, further comprising: an airflow generating means for creating a flow of air or steam in the heating chamber; and an outlet opening / closing means for opening / closing the outlet. 4. The heating device according to claim 3, wherein the control unit controls the discharge port opening / closing unit to close the discharge port when the airflow generation unit is operated during the execution of the control based on the signal of the first detection unit. 4. The heating device according to claim 3, wherein the control unit controls the discharge port opening / closing unit to open the discharge port when the airflow generation unit is operated after the control based on the signal of the first detection unit is finished. .