JP2018115814A - Food temperature control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a food temperature control device that can further improve safety of meals by improving a bacteria elimination property.SOLUTION: A food temperature control device according to the present invention comprises a first heat insulating storage, a second heat insulating storage, a circulation path provided outside the first and second heat insulating storages to communicate with the first and second heat insulating storages, a cooling medium formation part arranged in the circulation path to form a cooling medium, a heating medium formation part arranged in the circulation path to form a heating medium, a blowing device arranged in the circulation path to blow the cooling medium or the heating medium into the first and second heat insulating storages, an opening/closing valve that opens/closes the circulation path, a control part that controls operation of the cooling medium formation part, the heating medium formation part, the blowing device, and the opening/closing valve to perform a plurality of operation modes including a bacteria elimination mode, and a selection part that can select an arbitrary operation mode out of the plurality of operation modes. When the bacteria elimination mode is selected by the selection part, the control part controls operation of the heating medium formation part, the blowing device, and the opening/closing valve so that the heating medium circulates through the first heat insulating storage, the second heat insulating storage, and the circulation path.SELECTED DRAWING: Figure 13

Description

  The present invention relates to a food temperature control apparatus that heats and heats food placed on a tray in a facility such as a hospital.

  In facilities that require a large amount of catering at once, such as hospitals, health care facilities for the elderly, hotels, and schools, food temperature control devices such as a suitable temperature catering car and a reheating cart are used. As a conventional food temperature control device, for example, a device (heat retention device) described in Patent Document 1 (Japanese Patent Laid-Open No. 2009-236382) is known.

JP 2009-236382 A

  In facilities such as hospitals, it is required to further improve the safety of food, such as measures against norovirus. For this reason, in the conventional food temperature control apparatus, after each meal, the inside of the heat-reserving chamber for putting the tray on which the food is placed is cleaned by washing with water or wiping alcohol. At this time, a disinfectant such as hypochlorous acid water or sodium hypochlorite is used in order to disinfect viruses and bacteria in the heat insulation chamber.

  However, cleaning by washing with water or wiping with alcohol may cause uneven cleaning, and the inside of the heat insulation chamber may not be sufficiently sterilized. In addition, slightly acidic hypochlorous acid water, weakly acidic hypochlorous acid water, sodium hypochlorite, etc. are used as disinfectants, but using these disinfectants improves disinfectability. Otherwise, rough hands and metal corrosion may occur. Moreover, since the disinfectant using sodium hypochlorite may affect the safety of the meal, it needs to be removed, and the removal takes time.

  Moreover, in the conventional food temperature control apparatus, in order to send cold air or hot air into the heat insulation, a duct and a fan are provided outside the heat insulation. If viruses or bacteria adhere to the duct or fan, they cannot be sterilized unless the apparatus is disassembled in the conventional configuration. Therefore, in the conventional food temperature control apparatus, there is still room for improvement in terms of improving sterilization and further improving food safety.

  Accordingly, an object of the present invention is to solve the above-described problems, and to provide a food temperature control device that can improve sterilization and further improve the safety of meals.

In order to achieve the above object, a food temperature control device according to the present invention includes a first heat storage, a second heat storage,
A circulation path that is provided outside the first heat storage and the second heat storage, and communicates the first heat storage and the second heat storage;
A cooling medium generator that is disposed in the circulation path and generates a cooling medium;
A heating medium generating unit that is arranged in the circulation path and generates a heating medium;
An air blower that is arranged in the circulation path and blows the cooling medium or the heating medium to the first heat insulation and the second heat insulation;
An on-off valve for opening and closing the circulation path;
A controller that controls operations of the cooling medium generator, the heating medium generator, the blower, and the on-off valve to perform a plurality of operation modes including a sterilization mode;
A selection unit capable of selecting an arbitrary operation mode from the plurality of operation modes;
With
When the sterilization mode is selected by the selection unit, the control unit causes the heating medium to circulate through the first heat storage, the second heat storage, and the circulation path. Controlling the operation of the blower and the on-off valve;
It is configured as follows.

  According to the food temperature control apparatus according to the present invention, it is possible to improve sterilization and further improve food safety.

It is a perspective view of the foodstuff temperature control apparatus which concerns on 1st Embodiment of this invention. It is a top view which permeate | transmits and shows the upper surface of the foodstuff temperature control apparatus of FIG. It is food temperature control apparatus A1-A1 sectional view taken on the line of FIG. 1, Comprising: It is a figure which shows the flow of the heating medium and cooling medium in normal mode. It is A2-A2 sectional view of the food temperature control apparatus of FIG. 1, Comprising: It is a figure which shows the flow of the heating medium and cooling medium in normal mode. It is A3-A3 sectional view of the food temperature control apparatus of FIG. 1, Comprising: It is a figure which shows the flow of the heating medium and cooling medium in normal mode. It is A1-A1 sectional view taken on the line of the food temperature control apparatus of FIG. 1, Comprising: It is a figure which shows the flow of the cooling medium in all-cooling mode. It is A2-A2 sectional view of the food temperature control apparatus of FIG. 1, Comprising: It is a figure which shows the flow of the cooling medium in all-cooling mode. It is an A3-A3 line sectional view of the food temperature control device of Drawing 1, and is a figure showing a flow of a cooling medium in all cooling mode. It is a disassembled perspective view which shows the structure of a 1st chamber typically, Comprising: It is a figure which shows the flow of the cooling medium and heating medium in normal mode and all-cooling mode. It is a disassembled perspective view which shows the structure of a 2nd chamber typically, Comprising: It is a figure which shows the flow of the cooling medium in a normal mode and a total cooling mode. It is a block diagram which shows schematic structure relevant to the control part with which the foodstuff temperature control apparatus of FIG. 1 is provided. It is A1-A1 sectional view taken on the line of the food temperature control apparatus of FIG. 1, Comprising: It is a figure which shows the flow of the heating medium in disinfection mode. It is A2-A2 sectional view of the food temperature control apparatus of FIG. 1, Comprising: It is a figure which shows the flow of the heating medium in disinfection mode. It is A3-A3 sectional view of the food temperature control apparatus of FIG. 1, Comprising: It is a figure which shows the flow of the heating medium in disinfection mode. It is a disassembled perspective view which shows the structure of a 1st chamber typically, Comprising: It is a figure which shows the flow of the heating medium in disinfection mode. It is a disassembled perspective view which shows the structure of a 2nd chamber typically, Comprising: It is a figure which shows the flow of the heating medium in disinfection mode. It is a perspective view which shows the structural example of a heating-medium production | generation part typically, and is a figure which shows the state by which the heating-medium production | generation part is arrange | positioned in the duct chamber of a 1st chamber. It is a figure which shows schematic structure of the gas-liquid two-phase medium production | generation part with which the heating-medium production | generation part of FIG. 17 is provided. It is a perspective view of the foodstuff temperature control apparatus which concerns on 2nd Embodiment of this invention. It is a top view which permeate | transmits and shows the upper surface of the foodstuff temperature control apparatus of FIG. It is B1-B1 sectional view taken on the line of FIG.

According to the food temperature control apparatus which concerns on 1 aspect of this invention, a 1st heat retention box, a 2nd heat retention container,
A circulation path that is provided outside the first heat storage and the second heat storage, and communicates the first heat storage and the second heat storage;
A cooling medium generator that is disposed in the circulation path and generates a cooling medium;
A heating medium generating unit that is arranged in the circulation path and generates a heating medium;
An air blower that is arranged in the circulation path and blows the cooling medium or the heating medium to the first heat insulation and the second heat insulation;
An on-off valve for opening and closing the circulation path;
A controller that controls operations of the cooling medium generator, the heating medium generator, the blower, and the on-off valve to perform a plurality of operation modes including a sterilization mode;
A selection unit capable of selecting an arbitrary operation mode from the plurality of operation modes;
With
When the sterilization mode is selected by the selection unit, the control unit causes the heating medium to circulate through the first heat storage, the second heat storage, and the circulation path. Controlling the operation of the blower and the on-off valve;
It is configured as follows.

  According to this configuration, since the circulation path that communicates between the first heat insulation and the second heat insulation is provided, the cooling medium or the heating medium is circulated through the first heat insulation, the second heat insulation, and the circulation path. be able to. In addition, when the sterilization mode is selected, the heating medium circulates through the first heat insulating chamber, the second heat insulating chamber, and the circulation path, so that the first heat insulating chamber and the second heat insulating chamber are used by the heating medium. And the circuit can be sterilized by heating. Moreover, since the cooling medium production | generation part, the heating medium production | generation part, and the air blower are arrange | positioned in the circulation path, they can be disinfected by heating with a heating medium. Moreover, since this sterilization mode is automatically performed by control by a control part, cleaning unevenness can be suppressed. Therefore, sterilization can be improved and food safety can be further improved.

  The heating medium generating unit includes a superheated steam generating unit that generates superheated steam as the heating medium, and the control unit is configured such that when the sterilization mode is selected by the selection unit, the superheated steam is It is preferable to be configured to control operations of the heating medium generation unit, the blower, and the on-off valve so as to circulate through the first heat storage, the second heat storage, and the circulation path. According to this configuration, since superheated steam is circulated as a heating medium, sterilization can be further improved without using a sterilizing agent such as sodium hypochlorite. Superheated steam becomes water when condensed, so food safety is not compromised.

  The heating medium generation unit includes a gas-liquid two-phase medium generation unit that generates a gas-liquid two-phase medium exceeding 100 ° C. in which fine water droplets are dispersed in superheated steam as the heating medium, and the control unit includes: When the sterilization mode is selected by the selection unit, the heating medium generation unit, the gas-liquid two-phase medium circulates in the first heat storage, the second heat storage, and the circulation path, It is preferable to be configured to control the operation of the blower and the on-off valve. The gas-liquid two-phase medium has properties of higher specific heat (heat transfer characteristics) and higher sterilization than superheated steam. According to the above configuration, since the gas-liquid two-phase medium is circulated as a heating medium, the first heat insulation, the second heat insulation, and the circulation path can be heated more uniformly in a shorter time, The sterilizing property can be further improved without using a sterilizing agent. Moreover, since the gas-liquid two-phase medium becomes water when condensed, food safety is not impaired.

  In addition, the plurality of operation modes include a normal mode in which a heating medium is supplied to the first heat storage and a cooling medium is supplied to the second heat storage. When the normal mode is selected, the gas-liquid two-phase medium in which the concentration of the fine water droplets is lower than that when the sterilization mode is selected by the selection unit is one of the first heat insulation and the circulation path. It is preferable that the heating medium generating unit, the blower, and the on-off valve are controlled to circulate through the unit. According to this configuration, the food in the first heat storage can be efficiently heated by circulating the gas-liquid two-phase medium in the standard mode. Moreover, it can suppress that a foodstuff contains excessive water | moisture content by making the density | concentration of a fine water droplet low in standard mode. Conversely, in the sterilization mode, sterilization can be further improved by increasing the concentration of fine water droplets.

  In addition, the heating medium generation unit includes a hot air generation unit that generates hot air as the heating medium, and the control unit is configured such that after the sterilization mode ends, the hot air is supplied to the first heat insulation chamber and the second heat insulation chamber. It is preferable that a drying mode for controlling operations of the heating medium generator, the blower, and the on-off valve is performed so as to circulate through the circulation path. According to this configuration, moisture generated in the first heat storage, the second heat storage, or the circulation path can be dried, and growth of mold and the like due to the humidity can be suppressed.

  Moreover, the said control part stops the operation | movement of the said heating medium production | generation part after completion | finish of the said drying mode, and the air ventilated from the said air blower is a said 1st heat storage, the said 2nd heat storage, and the said circulation. It is preferable that the air blowing mode for controlling the operation of the air blowing device and the on-off valve to perform circulation is performed. According to this structure, while stopping operation | movement of a heating-medium production | generation part, by circulating the air ventilated from an air blower, the temperature in a 1st heat insulating box, a 2nd heat insulating box, and a circulation path is normal temperature earlier. Can be.

  In addition, the circulation path accommodates the heating medium generation unit and communicates with the first heat insulation, and the second chamber accommodates the cooling medium generation unit and communicates with the second heat insulation. A first duct that communicates the first and second warming chambers with the second chamber, a second duct that communicates the first warming chamber and the first chamber, and the first chamber. You may comprise so that the 3rd duct which connects the said 2nd chamber may be provided.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by this embodiment.

<< First Embodiment >>
The food temperature control apparatus according to the first embodiment of the present invention will be described. FIG. 1 is a perspective view of the food temperature control apparatus according to the first embodiment.

  As shown in FIG. 1, the food temperature adjustment device 1 according to the first embodiment is a mobile reheating cart, a mobile device (cart) 2, and a heat retaining device 3 provided on the mobile device 2. It has. Since the food temperature control apparatus 1 can move, it can also be used as a distribution car. In the present invention, the food temperature control device 1 may be a stationary reheating device. The reheating device is a device that performs a so-called cook chill method in which food and ingredients prepared in advance are refrigerated once and then reheated to a safe temperature before serving and served.

  The moving device 2 can move the heat retaining device 3. For example, the moving device 2 may be an electric type (including a power assist type) or a hand-push type.

  The heat retaining device 3 includes a housing 31 provided with an opening on the front side, an open / close door 32 that opens and closes the opening of the housing 31, and a selection unit that can select an arbitrary operation mode from a plurality of operation modes. And a temperature control operation panel 33 which is an example. The “multiple operation modes” include, for example, a normal mode, a full cooling mode, and a sterilization mode. The temperature adjustment operation panel 33 is configured to be able to change settings such as a heating temperature and a refrigeration temperature in each operation mode.

  The heat retaining device 3 includes a handle portion 34, a magnet outlet 35, and an electric leakage breaker 36. The handle portion 34 is provided on the side surface of the heat retaining device 3 and becomes a handle portion of the user when traveling by the moving device 2. The magnet outlet 35 is supplied with electric power from a commercial power source (for example, AC 200V). The leakage breaker 36 is provided as a safety function for preventing leakage.

  FIG. 2 is a plan view showing the upper surface of the food temperature control apparatus 1 in a transparent manner. 3 and 6 are cross-sectional views taken along line A1-A1 of FIG. 4 and 7 are cross-sectional views taken along line A2-A2 of FIG. 5 and 8 are cross-sectional views taken along line A3-A3. 3 to 5 show the flow of the heating medium and the cooling medium in the normal mode, and FIGS. 6 to 8 show the flow of the cooling medium in the full cooling mode.

  In addition, as shown in FIGS. 2 to 8, the heat retaining device 3 includes a first heat retaining chamber 4 that can be used by switching between a warm storage and a refrigerator, and a second heat retaining chamber 5 that can be used as a refrigerator. I have. The heat retaining device 3 is a heat retaining device having a reheating function. The 1st heat storage 4 and the 2nd heat storage 5 are comprised, for example with stainless steel, and are divided by the partition 9. FIG. In addition, the partition 9 is a structure (FIG. 5, partition bar 43) as described in Unexamined-Japanese-Patent No. 2003-299524, for example.

  Here, the “warm storage” refers to a food storage having a function capable of maintaining the internal temperature in a certain range. The “warm storage” refers to one that maintains the internal temperature in a temperature range higher than room temperature (for example, 20 ° C.). “Refrigerator” refers to one that maintains the internal temperature in a temperature range lower than room temperature. In addition, when using the 1st heat storage 4 as a heat storage, the temperature in the 1st heat storage 4 at the time of reheating is set, for example to 100-130 degreeC, and the temperature in the 1st heat storage 4 at the time of heat insulation Is set to 60 to 80 ° C., for example. Moreover, when using the 1st heat storage 4 and the 2nd heat storage 5 as a refrigerator, the temperature in the 1st heat storage 4 and the 2nd heat storage 5 is set to 3-10 degreeC, for example. The case where the 1st heat storage 4 is used as a heat storage and the 2nd heat storage 5 is used as a refrigerator is called "normal mode." The normal mode includes a reheating mode in which the food in the first heat storage 4 is reheated at 100 to 130 ° C and a heat retention mode in which the food in the first heat storage 4 is kept at 60 to 80 ° C. Moreover, the case where both the 1st heat storage 4 and the 2nd heat storage 5 are used as a refrigerator is called "all-cooling mode." Moreover, the case where a heating medium is supplied and heated to both the 1st heat storage 4 and the 2nd heat storage 5 is called "sanitization mode."

  As shown in FIGS. 3 to 8, a plurality of trays 41 on which food is placed are stored in the first heat storage 4 and the second heat storage 5. The plurality of trays 41 are accommodated across the first heat insulation chamber 4 and the second heat insulation chamber 5 by being inserted into the partition 9. The tray 41 has a structure (FIG. 11, tray 31) as described in, for example, Japanese Patent Application Laid-Open No. 2003-299524.

  Further, the heat retaining device 3 returns the cooling medium supply device 6 that supplies the cooling medium to the first heat retaining chamber 4 and the second heat retaining chamber 5, and the cooling medium supplied to the first heat retaining chamber 4 to the cooling medium supply device 6. A cooling medium circulation device 7 and a heating medium supply device 8 for supplying a heating medium to the first heat storage 4 are provided. Here, the cooling medium supply device 6 includes a second chamber 62 including a blower chamber 62a, a duct chamber 62b, and a blower chamber 62c, and a cooling medium generation unit 61 installed in the duct chamber 62b. The heating medium supply device 8 includes a first chamber 82 including a blower chamber 82a, a duct chamber 82b, and a blower chamber 82c, and a heating medium generator 81 installed in the duct chamber 82b.

  As shown in FIG. 2, the cooling medium circulation device 7 includes a first duct 71 that communicates the first heat insulating chamber 4 and the cooling medium supply device 6, and the cooling medium supplied to the first heat insulating chamber 4 as the first duct. 71 is provided with a first fan 72 for blowing air.

  A first valve 73 such as an electromagnetic valve is provided in the first duct 71. The first valve 73 closes the inside of the first duct 71 when the first heat storage 4 is used as a heat storage. On the other hand, the first valve 73 cools the inside of the first duct 71 when the first heat storage 4 is used as a refrigerator. The opening / closing operation is controlled so that the medium is opened to flow.

  In addition, a second fan 74 is provided in the first duct 71 as shown in FIG. In the first embodiment, the first duct 71 is also in communication with the second heat insulating chamber 5 through the opening 71a. When the first valve 73 closes the inside of the first duct 71, that is, when the first heat insulation 4 is used as a heat storage, the second fan 74 has an inside in the second heat insulation 5 as shown in FIG. 4. The air blowing operation is controlled so as to blow the cooling medium supplied to the cooling medium supply device 6 through the first duct 71. In addition, when the first valve 73 opens the inside of the first duct 71, that is, when the first heat insulating box 4 is used as a refrigerator, the second fan 74 has an inside of the second heat insulating box 5 as shown in FIG. 7. The air blowing operation is controlled so as to blow the cooling medium that has passed through the first valve 73 together with the cooling medium supplied to the cooling medium supply device 6.

  As shown in FIG. 2, the heating medium supply device 8 includes a heating medium generation unit 81 that generates a heating medium, a first chamber 82 that houses the heating medium generation unit 81 and communicates with the first heat retaining chamber 4, The 1st chamber 82 and the 2nd duct 83 which connects the 1st heat storage 4 are provided. In the second duct 83, a third fan 84 that blows the heating medium supplied to the first heat retaining chamber 4 to the first chamber 82 is provided. The second duct 83 is connected to a common duct 85 arranged so as to straddle the upper portions of the air blowing chamber 82a, the duct chamber 82b, and the air blowing chamber 82c. The common duct 85 and the air blowing chamber 82a communicate with each other through the opening 85a. The common duct 85 and the duct chamber 82b communicate with each other through the opening 85b. The common duct 85 and the air blowing chamber 82c communicate with each other through the opening 85c.

  In the first embodiment, the heating medium generation unit 81 includes a hot air generation unit that generates hot air as the heating medium. The hot air generation unit is a heater such as a sheathed heater, a panel heater, or a PTC heater, for example, and generates hot air by heating air. The said hot air production | generation part is the hot air production | generation part 81a mentioned later using FIG. 17, for example. That is, in the first embodiment, the heating medium generation unit 81 does not include the gas-liquid two-phase medium generation unit 81b shown in FIG. 17, and is configured by only one or more hot air generation units 81a. The temperature of the hot air is, for example, 100 ° C. or higher.

  FIG. 9 is an exploded perspective view schematically showing the structure of the first chamber 82. As shown in FIG. 9, the 1st chamber 82 is provided with the ventilation chamber 82a, the duct chamber 82b, and the ventilation chamber 82c. The air blowing chamber 82a, the duct chamber 82b, and the air blowing chamber 82c are each formed in a cylindrical shape and arranged so as to be aligned in that order.

  The duct chamber 82 b is formed in a size that accommodates the heating medium generation unit 81. As shown in FIGS. 4 and 7, the upper portion of the duct chamber 82 b communicates with the first heat storage 4 via the second duct 83. As shown in FIG. 9, an opening 82d that communicates with the blower chamber 82a and an opening 82e that communicates with the blower chamber 82c are provided at the lower portion of the duct chamber 82b. A plurality of air blowing holes 82f are provided on the surface of the air blowing chamber 82a facing the first heat insulating chamber 4. A plurality of air holes 82g are provided on the surface of the air chamber 82c facing the first heat insulating chamber 4. In the figure, four ventilation holes are schematically shown in the vertical direction, but the actual number of ventilation holes is set according to the number of trays (for example, 6 to 12 stages) stored in the heat insulation box in the vertical direction. Yes.

  The cooling medium supply device 6 includes a cooling medium generation unit 61 that generates a cooling medium, a second chamber 62 that houses the cooling medium generation unit 61 and communicates with the second heat insulating chamber 5, a first chamber 82, and a second chamber. And a third duct 63 communicating with 62. A fourth fan 64 that blows the cooling medium generated by the cooling medium generation unit 61 to the first chamber 82 is provided in the third duct 63.

  In the first embodiment, the cooling medium generation unit 61 includes a cooling medium generation unit that generates cold air as a cooling medium. The cooling medium generation unit is a cooling device such as an evaporator, for example, and generates cold air by cooling air. The temperature of the cold air is, for example, 10 ° C. or less. In addition, the compressor which cools in cooperation with an evaporator is arrange | positioned at the lower part of the moving apparatus 2, for example, and is connected by piping. Note that the “cooling medium” here is not a so-called “refrigerant” such as an chlorofluorocarbon gas circulating in an evaporator or a compressor.

  FIG. 10 is an exploded perspective view schematically showing the structure of the second chamber 62. As shown in FIG. 10, the second chamber 62 includes a blower chamber 62a, a duct chamber 62b, and a blower chamber 62c. The blower chamber 62a, the duct chamber 62b, and the blower chamber 62c are each formed in a cylindrical shape and arranged so as to be aligned in that order.

  The duct chamber 62 b is formed in a size that accommodates the cooling medium generation unit 61. The upper part of the blower chamber 62 c communicates with the duct chamber 82 b of the first chamber 82 via the third duct 63. As shown in FIG. 10, an opening 62d that communicates with the blower chamber 62a and an opening 62e that communicates with the blower chamber 62c are provided at the lower portion of the duct chamber 62b. A plurality of air blowing holes 62f are provided on the surface of the air blowing chamber 62a facing the second heat insulating box 5. A plurality of air blowing holes 62g are provided on the surface of the air blowing chamber 62c facing the second heat insulating chamber 5.

  Further, a second valve 65 such as an electromagnetic valve is provided in the third duct 63. The second valve 65 closes the inside of the third duct 63 when using the first heat storage 4 as a heat storage, while cooling the inside of the third duct 63 when using the first heat storage 4 as a refrigerator. The opening / closing operation is controlled so that the medium is opened to flow.

  Further, as shown in FIG. 2, between the first fan 72 of the first duct 71 and the first valve 73, the temperature of the cooling medium supplied to the first heat insulation chamber 4 is detected in the cooling mode. Temperature sensor 91 is provided. In addition, a temperature sensor 92 for detecting the temperature of the cooling medium supplied to the second heat retaining chamber 5 in the normal mode and the full cooling mode is provided between the opening 71a of the first duct 71 and the second fan 74. Is provided. In addition, a temperature sensor 93 for detecting the temperature of the heating medium supplied to the first heat retaining chamber 4 in the normal mode and the sterilization mode is provided between the third fan 84 of the second duct 83 and the duct chamber 82b. Is provided. The detected temperatures of these temperature sensors 91 to 93 are transmitted to the control unit 37 included in the heat retaining device 3.

  FIG. 11 is a block diagram illustrating a schematic configuration related to the control unit 37. As shown in FIG. 11, the control unit 37 is based on the temperature detected by the temperature sensors 91 to 93, and the first valve 73, the second valve 65, the first fan 72, the second fan 74, the third fan 84, The operation of the four fans 64, the heating medium generation unit 81, and the cooling medium generation unit 61 is controlled, and the operation mode selected on the temperature adjustment operation panel 33 is performed. Since the third fan 84 is operating when the first heat storage 4 functions as a heat storage in the normal mode, the temperature of the first heat storage 4 is measured by the temperature sensor 93. On the other hand, when the 1st heat storage 4 is functioning as a refrigerator in all-cooling mode, the 1st fan 72 is operating, but the 3rd fan 84 has stopped. For this reason, since hot air stays in the vicinity of the temperature sensor 93 and the temperature of the temperature sensor 93 cannot be said to reflect the temperature of the first heat insulating chamber 4, the temperature of the first heat insulating chamber 4 is the temperature sensor. Measure at 91.

  Note that, in the first embodiment, the first chamber 82, the second chamber 62, the first duct 71, the second duct 83, the third duct 63, and the common duct 85 are included in the first heat insulation box. A “circulation path” that connects 4 and the second heat storage 5 is configured. Further, the first valve 73 and the second valve 65 constitute an “open / close valve” for opening and closing the circulation path. The first fan 72, the second fan 74, the third fan 84, and the fourth fan 64 send a cooling medium or a heating medium to the first heat insulating chamber 4 and the second heat insulating chamber 5. Is configured. The cooling medium generator 61, the heating medium generator 81, the on-off valve, and the blower are arranged in the circulation path.

  As the first fan 72, the second fan 74, the third fan 84, and the fourth fan 64, for example, a sirocco fan, a cross flow fan, a propeller fan (including an axial fan), or the like can be used.

  Next, the flow of the heating medium and the cooling medium in the normal mode will be described with reference to FIGS.

  For example, when the user selects the normal mode on the temperature adjustment operation panel 33 of the heat retaining device 3, the control unit 37 causes the cooling medium generation unit 61 to generate the cooling medium and causes the heating medium generation unit 81 to generate the heating medium. Is generated. In addition, the control unit 37 drives (ON) the second fan 74 and the third fan 84. At this time, the first fan 72 and the fourth fan 64 are in a non-driven (OFF) state. The control unit 37 closes the inside of the first duct 71 by the first valve 73 and closes the inside of the third duct 63 by the second valve 65.

  As shown in FIG. 4, the cooling medium generated by the cooling medium generator 61 descends in the duct chamber 62b by the wind force of the second fan 74 as shown by the solid line arrow in FIG. Enter the blower chambers 62a and 62c through the openings 62d and 62e. As shown in FIG. 3 or 5, the cooling medium that has entered the blower chambers 62 a and 62 c rises in the blower chambers 62 a and 62 c, and is supplied to the second heat insulating chamber 5 through the plurality of blower holes 62 f and 62 g. . As shown in FIG. 4, the cooling medium supplied to the second heat insulating chamber 5 enters the first duct 71 through the opening 71 a provided in the first duct 71, and the opening 71 c is generated by the wind force of the second fan 74. Passes through the duct chamber 62b again. During the normal mode, the second heat insulating box 5 functions as a refrigerator by circulating the cooling medium in this way. In the normal mode, the temperature in the second heat storage 5 is set to 10 ° C., for example.

  As shown in FIG. 4, the heating medium generated by the heating medium generation unit 81 is lowered in the duct chamber 82b by the wind force of the third fan 84 as shown by the white arrow in FIG. The air enters the blower chambers 82a and 82c through the lower openings 82d and 82e. As shown in FIG. 3 or FIG. 5, the heating medium that has entered the blower chambers 82 a and 82 c rises in the blower chambers 82 a and 82 c and is supplied to the first heat insulating chamber 4 through the plurality of blower holes 82 f and 82 g. .

  Part of the heating medium that has entered the blower chambers 82a and 82c enters the common duct 85 through the openings 85a and 85c. Further, the heating medium supplied to the first heat insulating chamber 4 enters the common duct 85 through the second duct 83 by the wind force of the third fan 84 as shown in FIG. The heating medium that has entered the common duct 85 goes down the duct chamber 82b again through the opening 85b. During the normal mode, the heating medium circulates in this way, so that the first heat storage 4 functions as a temperature storage. In the normal mode, the temperature in the first heat insulation chamber 4 is set to 120 ° C. during reheating, for example, and is set to 23 ° C. during heat insulation. In addition, at the time of reheating, since the temperature in the 1st heat storage 4 becomes high temperature, it is preferable to lock automatically so that the door 32 may not be opened. The time required for reheating is, for example, 40 minutes.

  Next, the flow of the cooling medium in the full cooling mode will be described with reference to FIGS.

  For example, when the user selects the all-cooling mode on the temperature adjustment operation panel 33 of the heat retaining device 3, the control unit 37 causes the cooling medium generation unit 61 to generate the cooling medium. In addition, the control unit 37 drives (ON) the first fan 72, the second fan 74, and the fourth fan 64. At this time, the third fan 84 is in a non-driven (OFF) state. Further, the control unit 37 opens the inside of the first duct 71 by the first valve 73 and opens the inside of the third duct 63 by the second valve 65.

  As shown in FIG. 7, the cooling medium generated by the cooling medium generator 61 descends in the duct chamber 62b by the wind force of the second fan 74 as shown by the solid arrow in FIG. Enter the blower chambers 62a and 62c through the openings 62d and 62e. The cooling medium that has entered the blower chambers 62a and 62c rises in the blower chambers 62a and 62c, as shown in FIG.

  The cooling medium rising in the blower chambers 62a and 62c is supplied to the second heat insulating chamber 5 through the plurality of blower holes 62f and 62g. As shown in FIG. 7, the cooling medium supplied to the second heat insulating chamber 5 enters the first duct 71 through the opening 71 a provided in the first duct 71, and the opening 71 c is generated by the wind force of the second fan 74. Passes through the duct chamber 62b again.

  A part of the cooling medium rising in the blower chamber 62c passes through the second valve 65 through the third duct 63 by the wind force of the fourth fan 64, as shown in FIG. The cooling medium that has passed through the second valve 65 enters the common duct 85 and enters the duct chamber 82b through the opening 85b shown in FIG. The cooling medium that has entered the duct chamber 82b descends in the duct chamber 82b and enters the blower chambers 82a and 82c through the openings 82d and 82e below the duct chamber 82b, as indicated by solid arrows in FIG. As shown in FIG. 6 or FIG. 8, the cooling medium that has entered the blower chambers 82a and 82c rises in the blower chambers 82a and 82c and is supplied to the first heat insulating chamber 4 through the plurality of blower holes 82f and 82g. . Part of the cooling medium that has entered the blower chambers 82a and 82c enters the common duct 85 through the openings 85a and 85c, and merges with the cooling medium that has passed through the second valve 65.

  In addition, the cooling medium supplied to the first heat insulation chamber 4 passes through the first valve 73 through the first duct 71 by the wind force of the first fan 72 as shown in FIG. The cooling medium that has passed through the first valve 73 merges with the cooling medium that has entered the first duct 71 from the second heat insulating chamber 5 through the opening 71a of the first duct 71 by the wind force of the second fan 74 shown in FIG. Then, the air enters the duct chamber 62b through the opening 71c in the first duct 71. The cooling medium that has entered the duct chamber 62b descends in the duct chamber 62b, as indicated by solid arrows in FIG.

  During the cooling mode, the cooling medium circulates in this manner, so that the first heat insulating chamber 4 and the second heat insulating chamber 5 function as a refrigerator. In the all-cooling mode, the temperature in the first heat insulation chamber 4 and the second heat insulation chamber 5 is set to 3 ° C., for example. The time required for the all-cooling mode is, for example, 60 minutes.

  Next, the flow of the heating medium in the sterilization mode will be described with reference to FIGS. 12 is a cross-sectional view taken along line A1-A1 of FIG. 13 is a cross-sectional view taken along line A2-A2 of FIG. FIG. 14 is a cross-sectional view taken along line A3-A3. FIG. 15 is an exploded perspective view schematically showing the structure of the first chamber 82. FIG. 16 is an exploded perspective view schematically showing the structure of the second chamber 62. 12 to 16 show the flow of the heating medium in the sterilization mode.

  As shown in FIGS. 13 and 15, for the sterilization mode, a suction port 82 h communicating with the first heat retaining chamber 4 is provided below the duct chamber 82 b of the first chamber 82 so as to be openable and closable. . The suction port 82h is configured to be automatically or manually closed by the control unit 37 in the normal mode and the full cooling mode, and opened in the sterilization mode.

  For example, when the user selects the sterilization mode on the temperature adjustment operation panel 33 of the heat retaining device 3, the control unit 37 causes the heating medium generation unit 81 to generate a heating medium. The control unit 37 drives (ON) the first fan 72, the second fan 74, the third fan 84, and the fourth fan 64. The direction of rotation of the fan can be switched as necessary. Further, the control unit 37 opens the inside of the first duct 71 by the first valve 73 and opens the inside of the third duct 63 by the second valve 65.

  As shown in FIG. 13, the heating medium generated by the heating medium generation unit 81 rises in the duct chamber 62b by the wind force of the third fan 84, as indicated by a white arrow in FIG. 15, and passes through the opening 82b. Enter the common duct 85. The heating medium that has entered the common duct 85 is supplied into the first heat insulation chamber 4 through the third duct 83. A part of the heating medium that has entered the common duct 85 enters the air blowing chambers 82a and 82c through the openings 85a and 85c, and is supplied into the first heat insulating chamber 4 through the air blowing holes 82f and 82g. Part of the heating medium that has entered the blower chambers 82a and 82c enters the duct chamber 82b through the openings 82d and 82e. As shown in FIG. 13, the heating medium supplied to the first heat insulating chamber 4 enters the duct chamber 82b through the suction port 82h, and merges with the heating medium that has entered the duct chamber 82b through the openings 82d and 82e. Then, the inside of the duct chamber 82b rises again.

  As shown in FIG. 14, a part of the heating medium that has entered the common duct 85 passes through the second duct 63 by the wind force of the fourth fan 64, passes through the second valve 65, and enters the blower chamber 62c. enter. The heating medium that has entered the blower chamber 62c descends in the blower chamber 62c and is supplied to the second heat retaining chamber 5 through the blower hole 62g. A part of the heating medium descending in the blower chamber 62c enters the duct chamber 62b through the opening 62e as shown in FIG.

  As shown in FIG. 13 or FIG. 16, the heating medium that has entered the duct chamber 62b rises in the duct chamber 62b due to the wind force of the second fan 74, and passes through the first duct 71 and the opening 71a. To be supplied. At this time, the air blowing chamber 62a is in a negative pressure state, and as shown in FIG. 12 or FIG. 16, the heating medium supplied into the second heat insulating chamber 5 enters the air blowing chamber 62a through the air blowing holes 62f. The heating medium that has entered the blower chamber 62a enters the duct chamber 62b through the opening 62d, and merges with the heating medium that has entered the duct chamber 62b through the opening 62e.

  A part of the heating medium that has entered the first duct 71 passes through the first valve 73 by the wind power of the first fan 72 and is supplied to the first heat insulation box 4 as shown in FIG.

  During the sterilization mode, the heating medium circulates in this manner, so that the first heat insulating chamber 4, the second heat insulating chamber 5, and the circulation path are heated and sterilized by the heating medium. In the sterilization mode, the temperature in the first heat storage 4 and the second heat storage 5 is set to 100 ° C., for example. During the sterilization mode, the temperature in the first heat insulation chamber 4 and the second heat insulation chamber 5 becomes high, and therefore it is preferable that the door 32 is automatically locked so as not to be opened. The time required for the sterilization mode is, for example, 60 minutes.

  According to this 1st Embodiment, since the circulation path which connects the 1st heat storage 4 and the 2nd heat storage 5 is provided, a cooling medium or a heating medium is used as the 1st heat storage 4 and the 2nd heat storage 5. And can be circulated through the circuit. In addition, when the sterilization mode is selected, the heating medium circulates through the first heat insulating chamber 4, the second heat insulating chamber 5, and the circulation path. 2 The heat insulating cabinet 5 and the circulation path can be heated and sterilized. Moreover, since the cooling medium production | generation part 61, the heating medium production | generation part 81, and the air blower are arrange | positioned in the circulation path, they can be disinfected by heating with a heating medium. Moreover, since this sterilization mode is automatically performed by control by the control part 37, the cleaning nonuniformity can be suppressed. Therefore, sterilization can be improved and food safety can be further improved.

  In addition, this invention is not limited to the said 1st Embodiment, It can implement in another various aspect. For example, in the above description, the heating medium generation unit 81 includes the hot air generation unit that generates hot air as the heating medium, but the present invention is not limited to this. For example, the heating medium generator 81 may include a superheated steam generator that generates superheated steam as the heating medium. In this case, the control unit 37 generates the heating medium so that the superheated steam circulates in the first heat insulation chamber 4, the second heat insulation chamber 5, and the circulation path when the sterilization mode is selected on the temperature adjustment operation panel 33. It is preferable to control the operation of the section 81, the blower, and the on-off valve. According to this configuration, since superheated steam is circulated as a heating medium, sterilization can be further improved without using a sterilizing agent such as sodium hypochlorite. Superheated steam becomes water when condensed, so food safety is not compromised.

  The “superheated steam” is steam having a steam temperature exceeding a saturation temperature at a certain pressure (for example, 100 ° C. at normal pressure) by further heating the saturated steam. Superheated steam can be generated, for example, by heating water to form steam, and further heating the steam with a heater. In this case, the tank for storing water may be a separate component from the superheated steam generation unit, and may be disposed outside the first chamber 82 instead of in the duct chamber 82b.

  Moreover, the heating medium production | generation part 81 may be provided with the gas-liquid two-phase medium production | generation part which produces | generates the gas-liquid two-phase medium exceeding 100 degreeC by which the fine water droplet was disperse | distributed in superheated steam as a heating medium. In this case, when the sterilization mode is selected on the temperature adjustment operation panel 33, the control unit 37 causes the gas-liquid two-phase medium to circulate through the first heat storage 4, the second heat storage 5, and the circulation path. It is preferable to control the operation of the heating medium generator 81, the blower, and the on-off valve. The gas-liquid two-phase medium can be generated by heating and pressurizing soft water and gas with a built-in electric heater as described later. A specific example is Aqua Gas (registered trademark). In this case, the tank for storing soft water may be a separate component from the gas-liquid two-phase medium generation unit, and may be disposed outside the first chamber 82 instead of in the duct chamber 82b. The gas-liquid two-phase medium has properties of higher specific heat (heat transfer characteristics) and higher sterilization than superheated steam. According to the said structure, since the gas-liquid two-phase medium is circulated as a heating medium, the 1st heat insulation box 4, the 2nd heat insulation box 5, and a circulation path can be heated more uniformly in a short time. The sterilizing property can be further improved without using a sterilizing agent. Moreover, since the gas-liquid two-phase medium becomes water when condensed, food safety is not impaired. “Fine water droplets” refer to water droplets having a particle size of 100 μm or less, for example. The temperature of the gas-liquid two-phase medium is desirably 100 ° C. or higher, for example, 115 ° C. These fine water droplets are fine hot water droplets having a particle size of 100 μm or less and heated to 100 ° C. or more when produced.

  FIG. 17 is a perspective view schematically showing a configuration example of the heating medium generation unit 81, and shows a state where the heating medium generation unit 81 is arranged in the duct chamber 82 b of the first chamber 82. As shown in FIG. 17, the heating medium generation unit 81 includes two hot air generation units 81a and 81a and a gas-liquid two-phase medium generation unit 81b. The two hot air generators 81a and 81a include, for example, a heater having a meandering shape. The gas-liquid two-phase medium generation unit 81b is disposed between the two hot air generation units 81a and 81a, and is fixed to the bottom surface of the duct chamber 82b by an attachment unit 81c.

  FIG. 18 is a diagram illustrating a schematic configuration of the gas-liquid two-phase medium generation unit 81b. As shown in FIG. 18, the gas-liquid two-phase medium generating unit 81b includes a plate-shaped main body 81ba, a soft water tank 81bb, a pump 81bc, an injection nozzle 81bd, a pipe 81be, and a built-in electric heater 81bf. ing. The pipe 81be has one end connected to the soft water tank 81bb and the other end connected to the spray nozzle 81bd. The pump 81bc is attached to the pipe 81be between the main end 81ba and the soft water tank 81bb. The pipe 81be is provided so as to meander in the main body 81ba. The gas-liquid two-phase medium generating unit 81b causes the soft water stored in the soft water tank 81bb to flow into the pipe 81be by the force of the pump 81bc, heats it with the built-in electric heater 81bf in the main body 81ba, and injects it from the injection nozzle 81bd. Is configured to do. The soft water tank 81bb and the pump 81b may be separate parts from the gas-liquid two-phase medium generation unit, and may be disposed outside the first chamber 82, not in the duct chamber 82b in which the main body 81ba is disposed.

  In the above description, in the standard mode, the hot air is circulated as a heating medium in the first heat insulating chamber 4 and a part of the circulation path, but the present invention is not limited to this. For example, instead of hot air, superheated steam or a gas-liquid two-phase medium may be configured to circulate through the first heat insulating chamber 4 and a part of the circulation path. According to this structure, the foodstuff in the 1st heat retention box 4 can be efficiently heated by circulating superheated steam or a gas-liquid two-phase medium in standard mode.

  In the standard mode, when the gas-liquid two-phase medium is configured to circulate through the first heat insulating chamber 4 and a part of the circulation path, the concentration of fine water droplets (concentration per unit volume) is higher than that in the sterilization mode. It is preferable to make it low. That is, when the normal mode is selected on the temperature control operation panel 33, the control unit 37 detects that the gas-liquid two-phase medium having a concentration of fine water droplets lower than that when the sterilization mode is selected, It is preferable to control the operations of the heating medium generator 81, the blower, and the on-off valve so as to circulate a part of the circulation path. According to this configuration, in the standard mode, it is possible to suppress the food from containing excessive moisture by reducing the concentration of the fine water droplets. Conversely, in the sterilization mode, sterilization can be further improved by increasing the concentration of fine water droplets.

  In the standard mode, when the gas-liquid two-phase medium is configured to circulate through the first heat insulating chamber 4 and a part of the circulation path, the gas-liquid two-phase medium is directed from the upper part to the lower part of the first heat insulating container 4. Are preferably supplied. Thereby, while the food arrange | positioned in the 1st heat storage 4 can be heated efficiently, drying of a foodstuff can be suppressed with the water | moisture content which a gas-liquid two-phase medium contains. For this reason, it is preferable that the injection nozzle 81bd is arranged at the upper part of the duct chamber 82b located near the upper part of the first heat insulating chamber 4. Moreover, it is preferable that the injection nozzle 81bd is configured to inject the gas-liquid two-phase medium upward so that the fine water droplets are further diffused.

  Further, in the sterilization mode, when using superheated steam or a gas-liquid two-phase medium as a heating medium, hot air is used to dry the moisture in the first heat insulation chamber 4, the second heat insulation chamber 5, and the circulation path. It is preferable that a drying mode for circulation is performed. That is, after the end of the sterilization mode, the control unit 37 operates the heating medium generation unit 81, the air blower, and the on-off valve so that the hot air circulates through the first heat insulation chamber 4, the second heat insulation chamber 5, and the circulation path. It is preferable to perform a drying mode for controlling the temperature. According to this configuration, moisture generated in the first heat insulating chamber 4, the second heat insulating chamber 5, or the circulation path can be dried, and propagation of mold and the like due to moisture can be suppressed.

  Moreover, the control part 37 stops the operation | movement of the heating-medium production | generation part 81 after completion | finish of drying mode, and the air ventilated from an air blower circulates through the 1st heat insulating box 4, the 2nd heat insulating box 5, and a circulation path. It is preferable to perform the air blowing mode for controlling the operation of the air blowing device and the on-off valve. According to this structure, while stopping operation | movement of the heating-medium production | generation part 81, by circulating the air ventilated from an air blower, the temperature in the 1st heat insulation box 4, the 2nd heat insulation box 5, and a circulation path is made. It can be brought to room temperature sooner.

  Further, depending on the facility such as a hospital, it is assumed that sufficient time for performing the sterilization mode cannot be secured or higher sterilization properties are required. For this reason, it is preferable that a plurality of courses having different combinations such as the temperature, humidity, and drying time of the heating medium can be selected on the temperature adjustment operation panel 33. The plurality of courses include, for example, a standard course, a strong course, and a speed course. The standard course is, for example, a course in which the sterilization mode is performed for 1 hour. The powerful course is a course in which a sterilization mode is performed for 2 hours, for example. The speed course is, for example, a course in which the sterilization mode is performed for 30 minutes.

  In the above description, one each of the first fan 72, the second fan 74, the third fan 84, and the fourth fan 64 is provided, but the present invention is not limited to this. A plurality may be provided in consideration of wind power required for each fan, installation space, and the like. Further, in the sterilization mode, a fan may be added as appropriate so that a sufficient heating medium is circulated in the first heat insulation chamber 4, the second heat insulation chamber 5, and the circulation path. For example, in the sterilization mode, the flow of the heating medium that descends the blower chamber 82a and the blower chamber 82c may be weak (see FIG. 15). In this case, a separate fan may be added above the blower chamber 82a and the blower chamber 82c to increase the flow of the heating medium descending the blower chamber 82a and the blower chamber 82c. Thereby, in the sterilization mode, it is possible to smoothly circulate the heating medium in the first heat insulating chamber 4, the second heat insulating chamber 5, and the circulation path. In this case, the necessity of providing the suction port 82h can be eliminated.

  In addition, the circulation path is not limited to the above-described configuration, and a heating medium, a cooling medium, and the like can be circulated in the first heat insulating chamber 4 and the second heat insulating chamber 5, and the cooling medium generating unit 61, the heating medium What is necessary is just to be comprised so that the medium production | generation part 81 and an air blower may be accommodated.

(Second Embodiment)
FIG. 19 is a perspective view of a food temperature control apparatus according to the second embodiment of the present invention. FIG. 20 is a plan view showing the upper surface of the food temperature control apparatus of FIG. 21 is a cross-sectional view taken along line B1-B1 of FIG.

  The food temperature control apparatus 1A according to the second embodiment includes the two food temperature control apparatuses 1 according to the first embodiment, the heating medium generation unit 81 and the first chamber 82 of each heating medium supply apparatus 8. It has the structure connected so that it might share. In other words, the food temperature adjustment device 1A according to the second embodiment includes two sets of the cooling medium supply device 6 and the cooling medium circulation device 7, which are each in the plan view, and the heating medium generation unit 81 of the heating medium supply device 8 in plan view. It is comprised so that it may arrange | position to a point object centering on. Devices and components similar to those according to the first embodiment are given the same reference numerals, and redundant descriptions are omitted.

  According to the food temperature adjustment device 1A according to the second embodiment, the two food temperature adjustment devices 1 are connected so as to share the heating medium generation unit 81 and the first chamber 82 of the heating medium supply device 8 of each other. Therefore, it is possible to achieve downsizing and cost reduction compared to simply connecting the two food temperature control apparatuses 1. In addition, since one heating medium generation unit 81 is arranged at the center so that hot air flows to both ends, the heating medium generation unit 81 that requires the most power can be driven efficiently.

  Moreover, in the food temperature control apparatus 1A according to the second embodiment, since the heating medium generation unit 81 is configured to be shared, the temperature of the heating medium supplied into the two first heat insulation chambers 4 and The temperature of the cooling medium can be estimated to be the same or nearly the same. For this reason, it is only necessary to provide one each of the temperature sensors 91 and 93 for measuring the temperature of the heating medium or the cooling medium supplied into the first heat insulating chamber 4. Thereby, cost reduction can be achieved.

  It is to be noted that, by appropriately combining any of the various embodiments, the effects possessed by them can be produced.

  While the invention has been fully described in connection with preferred embodiments with reference to the accompanying drawings, various changes and modifications will be apparent to those skilled in the art. Such changes and modifications are to be understood as being included therein, so long as they do not depart from the scope of the present invention according to the appended claims.

  Since the present invention can improve sterilization and further improve food safety, it is used in facilities that require a large amount of cattle at once, such as hospitals, health care facilities for the elderly, hotels, and schools. It is useful for food temperature control devices such as optimal temperature distribution vehicles and reheating carts.

DESCRIPTION OF SYMBOLS 1,1A Food temperature control apparatus 2 Movement apparatus 3 Thermal insulation apparatus 4 1st thermal insulation box 5 2nd thermal insulation house 6 Cooling medium supply apparatus 7 Cooling medium circulation apparatus 8 Heating medium supply apparatus 9 Partition 31 Case 32 Opening / closing door 33 Temperature control operation Panel 34 Handle part 35 Magnet outlet 36 Earth leakage breaker 37 Control part 41 Tray 61 Cooling medium generation part 62 2nd chamber 62a, 62c Blower room 62b Duct room 62d, 62e Opening part 62f, 62g Blower hole 63 3rd duct 64 4th fan 65 2nd valve 71 1st duct 71a, 71c Opening part 72 1st fan 73 1st valve 74 2nd fan 81 Heating medium production | generation part 81a Hot air production | generation part 81b Gas-liquid two-phase medium production | generation part 81ba Main body part 81bb Soft water tank 81bc Pump 81bd injection nozzle 81be piping 81bf built-in electric heater 1c Mounting portion 82 First chamber 82a, 82c Blower chamber 82b Duct chamber 82d, 82e Opening portion 82f, 82g Blower hole 82h Suction port 83 Second duct 84 Third fan 85 Common duct 85a, 85b, 85c Opening portion 91-93 Temperature Sensor

Claims (7)

The first heat storage,
A second warmer,
A circulation path that is provided outside the first heat storage and the second heat storage, and communicates the first heat storage and the second heat storage;
A cooling medium generator that is disposed in the circulation path and generates a cooling medium;
A heating medium generating unit that is arranged in the circulation path and generates a heating medium;
An air blower that is arranged in the circulation path and blows the cooling medium or the heating medium to the first heat insulation and the second heat insulation;
An on-off valve for opening and closing the circulation path;
A controller that controls operations of the cooling medium generator, the heating medium generator, the blower, and the on-off valve to perform a plurality of operation modes including a sterilization mode;
A selection unit capable of selecting an arbitrary operation mode from the plurality of operation modes;
With
When the sterilization mode is selected by the selection unit, the control unit causes the heating medium to circulate through the first heat storage, the second heat storage, and the circulation path. The food temperature control apparatus which controls operation | movement of the said air blower and the said on-off valve. The heating medium generator includes a superheated steam generator that generates superheated steam as the heating medium,
When the selection unit selects the sterilization mode, the control unit generates the heating medium generation unit so that the superheated steam circulates in the first heat insulation, the second heat insulation, and the circulation path. The food temperature control device according to claim 1, which controls operations of the blower and the on-off valve. The heating medium generation unit includes a gas-liquid two-phase medium generation unit that generates a gas-liquid two-phase medium exceeding 100 ° C. in which fine water droplets are dispersed in superheated steam as the heating medium,
When the selection unit selects the sterilization mode, the control unit heats the gas-liquid two-phase medium so as to circulate through the first heat storage, the second heat storage, and the circulation path. The food temperature control apparatus according to claim 1, which controls operations of a medium generation unit, the blower, and the opening / closing valve. The plurality of operation modes include a normal mode in which a heating medium is supplied to the first heat storage and a cooling medium is supplied to the second heat storage.
The control unit is configured such that when the normal mode is selected by the selection unit, the gas-liquid two-phase medium in which the concentration of the fine water droplets is lower than when the sterilization mode is selected by the selection unit. The food temperature control apparatus according to claim 3, wherein operations of the heating medium generation unit, the blower, and the on-off valve are controlled so as to circulate through the first heat storage and a part of the circulation path. The heating medium generation unit includes a hot air generation unit that generates hot air as the heating medium,
The control unit, after the end of the sterilization mode, the heating medium generation unit, the blower, and the open / close so that the hot air circulates in the first heat insulation, the second heat insulation, and the circulation path The food temperature control apparatus according to any one of claims 1 to 4, wherein a drying mode for controlling the operation of the valve is performed.   The control unit stops the operation of the heating medium generation unit after the drying mode ends, and the air blown from the blowing device passes through the first heat insulation box, the second heat insulation box, and the circulation path. The food temperature control apparatus according to claim 5, wherein a blowing mode for controlling operations of the blowing device and the on-off valve is performed so as to circulate. The circuit is
A first chamber that houses the heating medium generator and communicates with the first insulation;
A second chamber containing the cooling medium generator and communicating with the second heat storage;
A first duct communicating the first and second heat insulation chambers with the second chamber;
A second duct communicating the first heat storage and the first chamber;
A third duct communicating the first chamber and the second chamber;
The food temperature control apparatus according to claim 1, comprising:

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