JP2016095078A - Heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a maintenance time for a water purifier to be accurately informed when water from a water supply source is supplied to a heating cooker through the water purifier.SOLUTION: A heating cooker 10 comprises: a cooking case 12 for storing food; a heater 13 for heating an inside part of the cooking case 12; a fan device 14 for making convection of air in the cooking case 12; and a steam generating device 20 for supplying steam in the cooking case 12. Water supply pipe passages 30, 32, 33 fed out of an external water supply source are connected at least to the steam generating device 20 through a water purifier F. An amount of water passing through the water supply pipe passage is calculated by water amount calculation means in reference to a releasing time of one or more of water supply valves 34, 35 present in the water supply pipe passage and a flow rate of water passing through the water supply pipe passage, a maintenance time for the water purifier F is informed on the basis of the calculated water amount. The water amount calculating means can change a flow rate of water passing through the water supply pipe passage in response to water supply pressure of the water supply source.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a cooking device provided with a steam generator capable of cooking food in a cooking chamber with air containing steam, and in particular, water from a water supply source to the cooking device via a water purifier. The present invention relates to a cooking device that informs the maintenance time of a water purifier when it is supplied.

  Patent Document 1 discloses a cooking device equipped with a steam generator. This cooking device includes a cooking chamber for storing ingredients, a heater for heating the cooking chamber, a fan device for convection of air in the cooking chamber, and a steam generator for supplying steam to the cooking chamber. Yes. This cooking device includes a hot-air cooking mode in which food in a cooking chamber is heated and cooked by hot air by heating by a heater and air convection by a fan device, and a steam cooking mode in which cooking is performed by steam supplied by a steam generator A cooking program comprising a combination cooking mode in which cooking is performed by hot air generated by heating by a heater and convection of air by a fan device and steam supplied by a steam generator, and cooking of food stored in a cooking cabinet The cooking program of each mode can be selected and cooked according to the method.

JP 2010-271017 A

  The heating cooker of Patent Document 1 is connected to a water supply pipe derived from a water supply source such as a water supply in order to supply water to a steam generator or the like, and the water of the water supply source is a mineral component by a water purifier interposed in the water supply pipe. Etc. are supplied to the heating cooker in a state where impurities such as are removed. In general, water purifiers have a filter medium replacement period according to the amount of filtered water, and if the water purifier is used after the filter medium replacement period, mineral components etc. There is a possibility that the impurities of the metal accumulate as scale. In order to cope with this, the applicant of the present invention, in the cooking device, supplies water from the opening time of the water supply valve interposed in the water supply pipe and the preset flow rate of water passing through the water supply pipe when the water supply valve is opened. The amount of water that has passed through the pipe, that is, the amount of water that has passed through the water purifier is calculated, and the maintenance time of the water purifier is displayed based on the calculated amount of water.

  The water supply pressure of a water supply source such as a water supply often changes depending on the facility where the heating cooker is installed, and the flow rate of water passing through the water supply pipe is supposed to change depending on the water supply pressure of the water supply source. For this reason, as described above, if the amount of water that has passed through the water supply pipe is calculated using the flow rate of the preset water that passes through the water supply pipe, the amount of water that has passed through the water supply pipe cannot be accurately calculated. The exact maintenance time could not be displayed. On the other hand, if a pressure reducing valve is interposed downstream from the water purifier of the water supply pipe so that the pressure of the water supplied to the heating cooker is reduced below a certain pressure, the heating cooker is supplied with water. Therefore, it is possible to prevent the calculation of an accurate amount of water passing through the water supply pipe due to the high water pressure.

  However, depending on the facility where the heating cooker is installed, it passes through the pressure reducing valve when the water supply pressure of the water supply source such as water supply is lower than the set pressure of the pressure reducing valve or due to pressure loss due to clogging of the filter medium of the water purifier The water pressure of water sometimes dropped below the set pressure of the pressure reducing valve. Thus, when water is supplied to the cooking device at a water pressure lower than the set pressure of the pressure reducing valve, the flow rate of water passing through the water supply pipe becomes lower than the preset water flow rate, and the water supply pipe is interposed as described above. Even if the amount of water that has passed through the water supply pipe is calculated from the opening time of the water supply valve and the preset flow rate of water that passes through the water supply pipe when the water supply valve is opened, the calculated amount of water actually passed through the water supply pipe The amount of water became larger, and it was not possible to display the exact maintenance time of the water purifier. An object of this invention is to enable it to alert | report the maintenance time of a water purifier correctly, when supplying the water from a water supply source to a heating cooker via a water purifier.

  In order to solve the above-described problems, the present invention provides a cooking chamber for storing ingredients, a heater for heating the cooking chamber, a fan device for convection of air in the cooking chamber, and a steam generator for supplying steam into the cooking chamber. And connecting at least a steam generator through a water purifier to a water supply line derived from an external water supply source, and passing through the water supply line and the opening time of one or more water supply valves interposed in the water supply line A heating cooker that calculates the amount of water that has passed through the water supply pipe from the flow rate of the water to be calculated by the water amount calculation means and notifies the maintenance time of the water purifier based on the calculated amount of water, the water amount calculation means being a water supply pipe It is an object of the present invention to provide a heating cooker characterized in that the flow rate of water passing through a passage can be changed according to the water supply pressure of the water supply pipeline.

  In the heating cooker configured as described above, the water amount calculation means can change the flow rate of the water passing through the water supply pipe according to the water supply pressure of the water supply pipe. Regardless of the water supply pressure of the water source, the amount of water that has passed through the water supply pipe can be accurately calculated by the water amount calculation means, and the accurate maintenance time of the water purifier has been notified.

  The cooking device configured as described above includes flow rate calculation means for calculating a flow rate of water passing through the water supply line from a water supply time for supplying a predetermined amount of water to the steam generator, and the water amount calculation means calculates the flow rate. It is preferable to calculate the amount of water that has passed through the water supply line based on the flow rate of water calculated by the means and the opening time of the water supply valve, and in this case, the water supply pressure of the water supply line depends on the use state of the water purifier. Even if it decreases, the amount of water passing through the water supply line can be accurately calculated by the water amount calculation means using the accurate flow rate of water passing through the water supply line calculated by the flow rate calculation means. The correct maintenance time of the vessel has been announced.

  In the heating cooker configured as described above, the flow rate of water corresponding to the water supply pressure of the water supply pipe is set for each range of the water supply time measured when calculating the flow rate calculation unit, and the water amount calculation unit It is preferable to calculate the amount of water that has passed through the water supply line based on the flow rate of water set in the range of the water supply time and the opening time of the water supply valve. It was possible to reduce the calculation load when calculating.

  In the heating cooker configured as described above, the steam amount calculation water supply pipe constituting a part of the water supply pipe is connected to the exhaust path of the cooking chamber, and one steam quantity calculation water supply pipe is provided. When the steam amount calculation water supply valve constituting one of the above water supply valves is interposed and the steam amount calculation water supply valve is opened in a plurality of open times consisting of a short time in seconds, the temperature change of the exhaust path Based on this, the amount of steam in the cooking chamber may be detected. In this case, immediately after opening the water supply valve for calculating the amount of steam, the flow rate is higher because water is released from the stopped state at once, and then the flow rate is lower than immediately after the release, for example, for 1 second. And the flow rate when opened for 5 seconds were different from each other. In order to cope with this, the water amount calculation means determines the flow rate of water passing through the steam amount calculation water supply pipe when the steam amount calculation water supply valve is opened in a plurality of open times consisting of a short time in seconds. The flow rate of water was changed to the water flow rate corresponding to, and the amount of water that passed through the steam amount calculation water supply line was calculated, so the steam amount calculation water supply valve was opened in multiple open times consisting of a short time in seconds. Sometimes, the exact amount of water that has passed through the steam supply pipe is calculated based on the flow rate of water that passes through the steam supply pipe according to each opening time of the steam supply valve. It was possible to calculate.

It is the schematic of the heating cooker of this invention. It is a block diagram which shows a control apparatus. It is a graph which shows the relationship between water supply pressure and the flow volume of the water of a 1st branch pipe. It is a graph which shows the relationship between the water supply time when supplying a predetermined amount of water to a steam generator, and the flow volume of the water of a 1st branch pipe. It is a graph which shows the relationship between a water supply pressure and the flow volume of the water of a 2nd branch pipe for every time (1 second, 2 seconds, and 5 seconds) which opened the 2nd water supply valve.

  Hereinafter, an embodiment of a heating cooker according to the present invention will be described with reference to the drawings. As shown in FIG. 1, the heating cooker 10 includes a cooking cabinet 12 that houses food in a housing 11. A heater 13 that heats the inside of the cooking chamber 12, a fan device 14 that convects the air in the cooking chamber 12, and an internal temperature sensor 15 that detects the temperature in the cooking chamber 12 are provided in the cooking chamber 12. . An exhaust port 12a is formed on the bottom surface of the cooking chamber 12, and an exhaust pipe 16 is connected to the exhaust port 12a. The exhaust pipe 16 is connected in the housing 11 to a tank 17 used for draining a steam generator 20 to be described later, and the tank 17 has a steam amount calculating temperature sensor 18 for calculating the amount of steam in the cooking chamber 12. Is provided.

  A steam generator 20 for supplying steam into the cooking chamber 12 is provided in the housing 11, and the steam generator 20 is erected above the tank 17 described above. The steam generating device 20 accommodates a plurality of metal heating rods (not shown) made of a conductive member in a cylindrical steam generating container 21 that stores water of a predetermined water level. The induction heating coil 22 is wound around. The steam generator 20 generates a magnetic field around the heating rod by supplying a high-frequency current to the induction heating coil 22, and generates steam by Joule heat generated by electric resistance when an eddy current flows through the heating rod by this magnetic field. Water in the container 21 is heated to generate steam from the water in the steam generation container 21. Further, a water level detection container 23 for detecting the water level is provided on the side of the steam generation container 21, and the lower part of the water level detection container 23 is connected to the steam generation container 21. A float switch 24 is accommodated in the water level detection container 23, and the water level in the steam generation container 21 is controlled to be a predetermined water level (predetermined amount of water) based on the detection water level of the float switch 24. Yes.

  The heating cooker 10 is connected to a water supply pipe (water supply pipe line) 30 derived from an external water supply source such as water supply. A water purifier F is interposed in the water supply pipe 30 outside the housing 11 of the heating cooker 10, and the water purifier F is a filter that contains impurities such as mineral components contained in water of a water supply source such as water supply. It has a function of removing with a filter medium. The filter medium of the water purifier F has an exchange time corresponding to the amount of water that has passed. Further, a pressure reducing valve R is provided on the downstream side of the water purifier F of the water supply pipe 30, and the pressure reducing valve R is 0 with a water supply pressure (water pressure) supplied from the water supply source to the heating cooker 10 as a predetermined pressure. It is adjusted to be lower than 16 Mpa.

  The water supply pipe 30 is connected to the branch socket 31 inside the housing 11 of the heating cooker 10, and the first branch pipe (water supply pipe) 32 led out from the branch socket 31 is connected to the water level detection container 23 of the steam generator 20. A second branch pipe 33 (which constitutes a water supply pipe and is a water supply pipe for steam amount calculation described in the claims of the present application) 33 led out from the branch socket 31 is connected to the tank 17. A first water supply valve 34 is interposed in the first branch pipe 32, and water from the water supply source opens the first water supply valve 34, passes through the water supply pipe 30 and the first branch pipe 32, and generates a steam. 20 is supplied. A second water supply valve 35 is interposed in the second branch pipe 33, and the water of the water supply source opens the second water supply valve 35 to pass through the water supply pipe 30 and the second branch pipe 33 to the tank 17. Supplied. The water supplied from the second branch pipe 33 to the tank 17 is provided in a position where the water is jetted to the steam amount calculating temperature sensor 18 in the tank 17.

  As shown in FIG. 2, the heating cooker 10 includes a heater 13, a fan device 14 (fan motor thereof), an internal temperature sensor 15, a steam amount calculation temperature sensor 18, an induction heating coil 22, a float switch 24, A control device 40 connected to the first and second water supply valves 34 and 35 is provided. The control device 40 includes a microcomputer (not shown), and the microcomputer includes a CPU, a RAM, a ROM, and a timer (all not shown) connected through a bus.

  The control device 40 has various cooking programs for cooking the ingredients in the cooking chamber in the RAM. The cooking program includes a hot-air cooking mode in which food in the cooking cabinet 12 is cooked by heating by the heater 13 and air convection by the fan device 14, a steam cooking mode in which cooking is performed by steam supplied by the steam generator 20, and a heater 13 and a combination cooking mode in which cooking is performed by hot air generated by the convection of air by the fan device 14 and steam supplied by the steam generator 20. For example, when the combination cooking program is executed, the control device 40 controls the operation of the heater 13 so that the temperature in the cooking chamber 12 becomes a predetermined temperature based on the temperature detected by the chamber temperature sensor 15, and the fan device. 14 and the steam generator 20 are operated (particularly, a high-frequency current is supplied to the induction heating coil 22) to convect hot air containing steam.

  The control device 40 is connected to an operation panel 41 provided on the front surface of the housing 11, and the operation panel 41 is provided with an operation switch and a display panel unit. A cooking program can be selected by operating various operation switches of the operation panel 41, and the cooking program selected by the operation switch is displayed on the display panel unit.

  In addition, the control device 40 has a water amount calculation program (water amount calculation means) that calculates the amount of water that has passed through the water supply pipe (water supply pipe) 30 (also the amount of water that has passed through the water purifier F) in the RAM. The maintenance time of the water purifier F is displayed (notified) on the display panel portion of the operation panel 41 based on the amount of water calculated by the program. The water amount calculation program determines the water supply pipe 30 (water supply pipe line) from the release time of the first and second water supply valves 34 and 35 and the flow rate of water passing through the first and second branch pipes (water supply pipe lines) 32 and 33. The amount of water that has passed is calculated.

  Depending on the facility where the heating cooker 10 is installed, the water supply pressure (water pressure) of a water supply source such as water supply may be lower than the set pressure of the pressure reducing valve R. As shown in FIG. 3, when the water supply pressure of a water supply source such as a water supply is lowered, the flow rate of water passing through the first branch pipe 32 (the same applies to the water supply pipe 30 and the second branch pipe 33) is also reduced. For this reason, the water amount calculation program can change the flow rate passing through the first and second branch pipes (water supply pipe lines) 32 and 33 according to the water supply pressure of the water supply pipe 30. When the heating cooker 10 is installed in a facility, the water supply pressure of a water supply source such as a water supply is measured, and the first branch pipe 32 (the first branch pipe 32 of the water amount calculation program is based on the relationship between the water supply pressure and the flow rate shown in FIG. The same applies to the two-branch pipe 33, and the flow rate of water passing through the relationship between the feed water pressure and the flow rate of the second branch pipe 33 is shown in FIG. Here, the flow rate of water passing through the first branch pipe 32 is set in three stages according to the range of the water supply pressure of a water supply source such as a water supply. That is, the water supply pressure of a water supply source such as a water supply is 0.1 Mpa or more (in this embodiment, the water pressure is adjusted to 0.16 or less when entering the heating cooker 10 by the pressure reducing valve R interposed in the water supply pipe 30. Therefore, even if the feed water pressure of the feed water source is 0.16 Mpa or more, the downstream side of the pressure reducing valve R of the feed water pipe 30 is adjusted to 0.16 Mpa) (standard feed water pressure in the figure). In some cases, the flow rate of water passing through the first branch pipe 32 is set to an average of 2.25 L / ml, and the water supply pressure of a water supply source such as a water supply is in the range of 0.06 to 0.1 Mpa (medium pressure in the figure). Water supply pressure), the flow rate of water passing through the first branch pipe 32 is set to an average of 1.75 L / ml, and the water supply pressure of a water supply source such as water supply is in the range of 0.025 to 0.06 MPa (see FIG. The first branch pipe 32 is passed when the water pressure is low) The flow rate of the water is set to average 1.1 L / ml. As shown in FIG. 5, the flow rate of the second branch pipe 33 is also set in three stages according to the range of the water supply pressure of a water supply source such as water supply. In addition, it is not restricted to what sets the flow volume of the 1st and 2nd branch pipes 32 and 33 by the range of the feed water pressure of a water supply source, The flow volume of the 1st and 2nd branch pipes 32 and 33 based on the feed water pressure of a water supply source May be set.

  The operation of the cooking device 10 configured as described above will be described based on the operation when the cooking program in the combination cooking mode is executed. When the cooking program in the combination cooking mode is selected and executed by the operation panel 41, the control device 40 controls the operations of the heater 13, the fan device 14, and the steam generation device 20, and contains steam in the cooking chamber 12. The food stored by convection with hot air is cooked. Specifically, the control device 40 controls the operation of the heater 13 based on the temperature detected by the internal temperature sensor 15 so that the temperature in the cooking chamber 12 becomes the set temperature, and the internal temperature sensor 15 and the steam. Based on the correlation of each detected temperature with the amount calculation temperature sensor 18, the steam amount in the cooking chamber 12 is detected, and the operation of the steam generator 20 is controlled so that the cooking chamber 12 has the set steam amount. ing. When the amount of steam in the cooking chamber 12 is detected, the second water supply valve 35 is opened as a short time in units of seconds, for example, for 1 second, 2 seconds, or 5 seconds, and the temperature sensor 18 for calculating the steam amount from the second branch pipe 33 is used. Water is injected into the cooking chamber 12, and the amount of steam in the cooking chamber 12 is detected based on the correlation between the respective detected temperatures of the inside temperature sensor 15 and the temperature sensor 18 for calculating the amount of steam after injection.

  When executing the cooking program in the combination cooking mode of the heating cooker 10, the control device 40 executes the water amount calculation program to calculate the amount of water that has passed through the water supply pipe 30, and displays it on the display panel unit of the operation panel 41. The maintenance time of the water purifier F can be displayed (notified). The water amount calculation program includes the amount of water that has passed through the first branch pipe 32 based on the opening time of the first water supply valve 34 and the flow rate of water in the first branch pipe 32, the opening time of the second water supply valve 35, and the second branch pipe 33. The amount of water that has passed through the second branch pipe 33 is calculated from the flow rate of the water, and the water that has passed through the water supply pipe 30 that is the sum of the amount of water that has passed through the first and second branch pipes 32, 33. (The amount of water that has passed through the water purifier F) is stored in the RAM. In addition, the control device 40 can display (notify) maintenance time such as replacement time of the filter medium of the water purifier F on the display panel portion of the operation panel 41 based on the amount of water that has passed through the water supply pipe 30 calculated by the water amount calculation program. Yes. When the operation switch of the operation panel 41 is pushed, the value obtained by dividing the total water amount calculated and accumulated by the water amount calculation program by the amount of water that can be passed through the filter medium of the water purifier F is obtained by the operation panel 41. Is displayed as a percentage on the display panel. In addition, although the control apparatus 40 demonstrated embodiment which is performing the water quantity calculation program, when the cooking program of the combination cooking mode of the heating cooker 10 is performed, the cooking program by steam cooking mode is performed. The controller 40 may be caused to execute the water amount calculation program even when the vehicle is in operation.

  The heating cooker 10 configured as described above is connected to a water supply pipe (water supply pipe line) 30 derived from an external water supply source such as water supply, and the water supply pipe 30 filters impurities such as mineral components contained in water. A water purifier F that is removed by a filter medium such as is interposed. The water supply pipe 30 is connected to the first and second branch pipes 32 and 33 by the branch socket 31 in the housing 11 of the heating cooker 10, and the water supply pipe 30 is steamed via the first and second branch pipes 32 and 33. The generator 20 and the tank 17 are connected.

  In this heating cooker 10, the control device 40 determines the first and second opening times of the first and second water supply valves 34, 35 interposed in the first and second branch pipes 32, 33 constituting the water supply pipe line. It has a calculation program for calculating the amount of water that has passed through the first and second branch pipes 32 and 33, that is, the amount of water that has passed through the water supply pipe 30, from each flow rate of water that passes through the second branch pipes 32 and 33. . The calculation program enables the flow rate of water passing through the first and second branch pipes 32 and 33 to be changed according to the supply water pressure (water pressure) of a water supply source such as a water supply. This makes it possible to accurately calculate the amount of water that has passed through the water supply pipe 30 by the water amount calculation program regardless of the water supply pressure of the water supply source such as the water supply of the facility where the heating cooker 10 is installed. The maintenance time has been announced.

  In particular, when the water supply pressure of the water supply source such as the water supply of the facility where the heating cooker 10 is installed is high, the water supply pressure of the water supply source such as the water supply can be adjusted by the pressure reducing valve R to be, for example, 0.16 Mpa. When the water supply pressure of a water supply source such as water supply is lower than the set pressure of the pressure reducing valve R, the flow rate of water passing through the water supply pipe 30 and the first and second branch pipes 32 and 33 has been changed by the water supply pressure. . Thus, even when the water supply pressure of the water supply source such as water supply is lower than the standard water supply pressure (0.16 MPa, which is the set pressure by the pressure reducing valve R), By using the flow rates of the first and second branch pipes 32 and 33, it becomes possible to calculate the exact amount of water that has passed through the water supply pipe 30, and to notify the exact maintenance time of the water purifier F. It became so. Moreover, since the average flow rate in the range of the standard water supply pressure and the medium water supply pressure and the low water supply pressure is used as the water supply pressure of the water supply source, the water supply pipe 30 is passed through the water amount calculation program. When calculating the amount of water, it has become possible to reduce the computational load.

  In the heating cooker 10 described above, the supply pressure of a water supply source such as a water supply is measured by a meter, and the control device 40 inputs the supply water pressure measured from the operation panel 41 to the control device 40. Each flow rate of water in the first and second branch pipes 32 and 33 corresponding to the water pressure is derived from the graphs of FIGS. 3 and 5. The present invention is not limited to this, and there is a correlation between the water supply time for supplying a predetermined amount of water to the steam generator 20 shown in FIG. 4 and the flow rate of water passing through the first branch pipe 32. As shown, the flow rate of water passing through the first branch pipe 32 may be calculated from a water supply time for supplying a predetermined amount of water to the steam generator 20 by a flow rate calculation program.

  Specifically, when the cooking device 10 is executing the combination cooking mode (or the steam cooking mode), the controller 40 opens the first water supply valve 34 and then uses the float switch 24 to open the steam generating container 21. The time until it is detected that a predetermined amount of water is supplied (including the water level detection container 23) is measured, and the predetermined amount of water supplied to the steam generation container 21 (including the water level detection container 23) is measured. The flow rate of water passing through the first branch pipe 32 is calculated by dividing the amount by the time when a predetermined amount of water is supplied by the float switch 24. Since the flow rate of water passing through the second branch pipe 33 has a correlation with the flow rate of water passing through the first branch pipe 32, the flow rate of water passing through the second branch pipe 33 is the first branch. What is necessary is just to calculate based on the flow volume of the water which passes the pipe | tube 32. FIG.

  When such a heating cooker 10 is continuously used, the filter medium of the water purifier F is gradually clogged with impurities contained in a water supply source such as tap water, and the water supply pressure of the water supply source is higher than that of the water purifier F of the water supply pipe 30. It may gradually decrease due to pressure loss due to clogging of the filter medium of the water purifier F on the downstream side. As described above, the flow rate of the water passing through the first branch pipe 32 is calculated from the water supply time for supplying a predetermined amount of water to the steam generator 20 by the flow rate calculation program, and the water amount calculation means is calculated by the flow rate calculation means. The amount of water that has passed through the water supply pipe 30 is calculated based on the flow rate of water in the branch pipe 32 (second branch pipe 33) and the opening time of the first water supply valve 34 (second water supply valve 35). For example, even if the water supply pressure changes due to clogging of the filter medium of the water purifier F on the downstream side of the water purifier F of the water supply pipe 30 (depending on the use state of the water purifier F), the first branch is generated by the flow rate calculation means An accurate flow rate of water passing through the pipe 32 (second branch pipe 33) is calculated, and a water amount calculation unit uses the calculated accurate flow rate of water passing through the first branch pipe 32 (second branch pipe 33). The amount of water that has passed through the water supply pipe 30 can be accurately calculated. Uninari, began to broadcast the correct maintenance timing of the water purifier F. Further, as shown in FIG. 4, the flow rate based on the standard water supply pressure (in this embodiment, for each water supply time range for supplying a predetermined amount of water to the steam generation container 21 (including the water level detection container 23). The flow rate is 2.25 L / min when the water supply time is 4 minutes to 8 minutes), the flow rate based on the medium water supply pressure (in this embodiment, the flow rate is 8 minutes to 11 minutes) May be set to 1.75 L / min), and a flow rate based on a low feed water pressure (in this embodiment, the flow rate is 1.1 L / min when the feed time is 11 minutes or more), When doing in this way, the calculation load when calculating the flow volume of the water which passes the 1st branch pipe 32 (2nd branch pipe 33) by the flow volume calculation means was able to be reduced.

  Further, when the second water supply valve 35 for calculating the amount of steam is opened, the second water supply valve 35 is opened in a short opening time of 1 second, 2 seconds or 5 seconds. As described above, when the second water supply valve 35 is opened with a short opening time of 1 second, 2 seconds or 5 seconds, immediately after the second water supply valve 35 is opened, the water is stopped from the stopped state at once. Is released, then the flow rate is high, and then the flow rate is less than immediately after release. As shown in FIG. 5, the flow rate when released for 1 second, the flow rate when released for 2 seconds, and the release for 5 seconds The flow rates at that time were different from each other.

  In order to cope with this, the water amount calculation means sets the flow rate of water passing through the second branch pipe (steam amount calculation water supply pipe) 33 to the second water supply valve (steam amount calculation water supply valve) 35 in a short unit of second. The amount of water that has passed through the second branch pipe 33 is calculated by changing to a flow rate of water corresponding to the opening time when the opening time is three (plural) opening times. As a result, even when the second water supply valve 35 is opened in three open times consisting of a short time of 1 second, 2 seconds or 5 seconds, the second water supply valve 35 is opened in each second. Based on the flow rate of the water passing through the corresponding second branch pipe 33, an accurate amount of water that has passed through the second branch pipe 33 can be calculated. Thus, since the exact water amount which passed not only the 1st branch pipe 32 but the 2nd branch pipe 33 can be calculated, the water quantity of the water supply pipe 30 which is the sum total of each water quantity of the 1st and 2nd branch pipes 32 and 33 Also, the replacement time of the filter medium of the water purifier F can be accurately displayed based on the calculated amount of water in the water supply pipe 30.

  In the above embodiment, the water supply pipe is composed of the water supply pipe 30 and the first and second branch pipes 32 and 33. However, the present invention is not limited to this, and the second branch pipe 33 is eliminated to supply water. Only the pipe 30 or the water supply pipe 30 and the first branch pipe 32 may be connected to the steam generator 20. Moreover, the water supply pipe line may further include a cleaning pipe for cleaning the inside of the cooking cabinet 12. In this case, a cleaning water supply valve is installed in the cleaning pipe, and the amount of water that has passed through the cleaning pipe is calculated from the opening time of the cleaning water supply valve and the flow rate of water in the cleaning pipe, and then passes through the calculated cleaning pipe. The amount of water that has passed through all the water supply pipelines may be calculated by adding the amount of water that has passed through the other water supply pipelines. In this case as well, the flow rate of the cleaning pipe may be changed according to the water supply pressure of the water supply source in the same manner as the flow rates of the first and second branch pipes 32 and 33 described above.

  In the above embodiment, the value obtained by dividing the total water amount calculated and accumulated by the water amount calculation program by the amount of water that can be passed through the filter medium of the water purifier F is displayed as a percentage on the display panel portion of the operation panel 41. However, the present invention is not limited to this, and lighting of the lamp provided on the operation panel 41 for the maintenance time of the water purifier F, You may make it display by blinking etc. and you may make it alert | report by sounds, such as a warning sound.

  DESCRIPTION OF SYMBOLS 10 ... Heating cooker, 12 ... Cooking chamber, 13 ... Heater, 14 ... Fan apparatus, 16 ... Exhaust pipe (exhaust path), 20 ... Steam generator, 30 ... Water supply pipe (water supply pipe), 32 ... Water supply pipe (First branch pipe), 33 ... water supply pipe, water supply pipe for steam amount calculation (second branch pipe), 34 ... water supply valve (first water supply valve), 35 ... water supply valve, water supply valve for steam quantity calculation ( 2nd water supply valve), F ... water purifier.

Claims (4)

A cooking cabinet containing ingredients,
A heater for heating the inside of the cooking chamber;
A fan device for convection of the air in the cooking chamber;
A steam generator for supplying steam into the cooking chamber;
A water supply line derived from an external water supply source is connected to at least the steam generator via a water purifier, and passes through the water supply line and an opening time of one or more water supply valves interposed in the water supply line. A water cooker that calculates the amount of water that has passed through the water supply pipe from the flow rate of water by means of a water amount calculation means, and notifies the maintenance time of the water purifier based on the calculated amount of water,
The cooking device according to claim 1, wherein the water amount calculating means can change a flow rate of water passing through the water supply pipe according to a water supply pressure of the water supply source. The heating cooker according to claim 1, wherein
A flow rate calculating means for calculating a flow rate of water passing through the water supply line from a water supply time for supplying a predetermined amount of water to the steam generator;
The cooking device according to claim 1, wherein the water amount calculating means calculates the amount of water that has passed through the water supply line based on the flow rate of water calculated by the flow rate calculating means and the opening time of the water supply valve. The cooking device according to claim 2,
The flow rate of the water according to the water supply pressure of the water supply source is set for each range of water supply time measured when calculating the flow rate calculation means,
The water amount calculation means calculates the amount of water that has passed through the water supply line based on the flow rate of the water set in the range of the water supply time and the opening time of the water supply valve. vessel. In the heating cooker according to any one of claims 1 to 3,
A steam amount calculation water supply line constituting a part of the water supply line is connected to an exhaust path of the cooking chamber, and one of the one or more water supply valves is connected to the steam amount calculation water supply line. Based on the temperature change of the exhaust path when the steam amount calculating water supply valve is provided and the steam amount calculating water supply valve is opened in a plurality of open times consisting of a short time in seconds. Which detects the amount of steam
The water amount calculating means is configured to determine a flow rate of water passing through the steam amount calculating water supply line and corresponding to an opening time when the steam amount calculating water supply valve is opened in a plurality of opening times consisting of a short time in seconds. The heating cooker is characterized in that the amount of water that has passed through the water supply pipe for calculating the amount of steam is calculated by changing the flow rate.

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