JP6292574B2 - Refrigeration equipment - Google Patents

Description

  The present invention relates to a refrigerated apparatus that can be stored after both hot and cold foods are refrigerated and then reheated and the cold food can be subsequently refrigerated and removed.

Conventionally, as an example of this kind of refrigeration apparatus, the thing of the following patent document 1 is known. This includes a cart with casters for storing trays, and a fixed station that is equipped with a cooling unit and a heating unit and stores the cart so that it can be taken in and out.
More specifically, in the cart, the inside of the cart body made of a heat insulating box with an open / close door is divided into a warm room and a cold room with a heat insulating partition wall, and the hot and cold foods are separated. The trays arranged in such a manner are stored in a plurality of stages in a form extending through the partition wall and extending between the warm room and the cold room.
A first heat exchange chamber equipped with a cooling unit, a heating unit, and a circulation fan and a second heat exchange chamber equipped with a cooling unit and a circulation fan are partitioned and formed side by side on the ceiling of the station. When the cart is stored in the station, an air circulation path is individually formed between the first heat exchange chamber and the refrigerator compartment and between the second heat exchange chamber and the refrigerator compartment. It has become.

  As a usage mode, for example, taking breakfast as an example, hot and cold foods prepared for cooking, etc., are prepared in the evening of the previous day, and each tray is stored in a cart, and then the cart is placed in a station. When the operation is started in this state, the cooling unit is first operated in both heat exchange chambers, and both the hot and cold foods placed on the tray are refrigerated by supplying cold air to both the hot and cold rooms. Stored (chilled storage) (refrigerated mode). When the predetermined time before the breakfast arrangement time, the cooling unit is switched to the heating unit in the first heat exchange chamber, while the cooling unit is continuously activated in the second heat exchange chamber. As hot air is circulated, the hot food is reheated, while the cold food is continuously stored in the cold room (reheating mode). When it is time to serve after the operation is stopped, the cart is pulled out from the station, and the tray is taken out for serving.

Here, when a specific example of the operation state on the side of the warming room in the reheating mode is shown, as shown in FIG. 18, the heating operation and the steaming operation are continuously performed. The heating operation is an operation in which the chilled storage room is raised to the set temperature and kept at the same set temperature for a set time, and in the steaming operation, the heating unit is inactive and only the circulation fan is turned to warm up the air. By circulating, the temperature unevenness in the warm room is eliminated and the temperature of the tray and tableware is lowered.
The internal temperature (core temperature) of the hot meal rises during both the heating operation and the steaming operation, and therefore the time of the reheating mode consisting of the heating operation and the steaming operation is the core temperature of the hot food at the end of the steaming operation. Is set to end the rise.

JP 2011-43310 A

In the above, when the reheating mode (steaming operation) ends, the serving is performed, but depending on the conditions such as the set temperature of the warming room, the tray is placed on the tray immediately after the end of the reheating mode. The tableware may be hot. For example, when the set temperature of the heating operation is 110 ° C., and the operation is performed with the setting time of 65 minutes for heating and 15 minutes for steaming, as shown in FIG. 18, the temperature of the tray immediately after the operation is increased to 95 ° C. It stays at a considerably high temperature compared with the optimum temperature (about 65 ° C.) when taking out. Therefore, it will be served after extending the time (about 45 minutes) until the tray falls to an appropriate temperature. During that time, the core temperature of the hot food (cold food) changes, or the usage form of the refrigeration apparatus Therefore, for example, when the time between breakfast meals is clogged, such as when applying to lunch meals, there is a problem such as not being able to take sufficient waiting time, and countermeasures have been eagerly desired. .
The refrigeration apparatus of the present invention has been completed based on the above circumstances, and its purpose is to quickly lower the temperature of a predetermined target portion in the apparatus at the end of the reheating mode.

The present invention comprises a cart body made of an insulated box having an entrance with an open / close door, and a heat insulating partition wall that partitions the inside of the cart body into a warm room and a cold room, and serves hot and cold foods. A cart in which trays that are separately provided penetrate through the partition wall and are stored in a plurality of stages in a form extending between the warm room and the cold room, the cart is stored in a removable manner, a cooling part, a heating part, A station in which a first heat exchange chamber equipped with a circulation fan and a second heat exchange chamber equipped with a cooling part and a circulation fan are partitioned and formed, and when the cart is stored in the station, An air circulation path formed separately between the first heat exchange chamber and the warm room, and between the second heat exchange chamber and the cold room, the cooling part, the heating part and the circulation fan; Operation control means for controlling the operation, and both heat exchange And the first cooling unit is operated, and cold air is circulated and supplied to both the warming room and the refrigerating room, so that both the hot food and the cold food on the tray are stored in a cold state, and the first In the heat exchange chamber, the cooling unit is switched to the operation of the heating unit, while in the second heat exchange chamber, the cooling unit is continuously operated, and warm air is circulated in the warming chamber so that hot food is circulated. A reheating mode in which the refrigerating chamber is reheated while cold food is continuously refrigerated and stored in the refrigerating room side, and a temperature of a predetermined target portion in the apparatus at the end of the reheating mode. It is characterized in that a temperature lowering means for lowering the temperature is provided.
According to the said structure, the temperature of the predetermined object part in the said apparatus can be rapidly cooled after completion | finish of reheating mode.

The following configuration may also be used.
(1) The target portion is the warming chamber, and the temperature lowering unit is configured to detect the end of the reheating mode, a timer, and the end detecting portion to end the reheating mode. An operation control unit configured to operate the cooling unit and the circulation fan of the first heat exchange chamber for a predetermined time set in the timer when detected.
After the end of the reheating mode, the temperature lowering mode using the refrigeration circuit is executed, and the temperature of the warming room is lowered in a short time. Therefore, the part stored in the warming room side of the tray can be lowered to an appropriate temperature in a short time, the work of taking out and arranging the tray can be performed smoothly, and the temperature lowering mode can be kept in a short time. In addition, changes in core temperature are suppressed for both hot and cold foods.

(2) The target portion is the warming chamber, and the temperature lowering means senses the temperature of the tray housed in the warming chamber and an end detection unit that detects that the reheating mode has been completed. And when the end of the reheating mode is detected by the end detection unit, the cooling unit of the first heat exchange chamber and the circulation fan are operated, and a detection temperature of the temperature sensor is determined in advance. And an operation control unit that deactivates the cooling unit and the circulation fan when the temperature falls to the set temperature.
After the end of the reheating mode, the temperature lowering mode using the refrigeration circuit is executed, and the temperature of the warming room is lowered in a short time. Therefore, the part stored in the warming room side of the tray can be lowered to an appropriate temperature in a short time, the work of taking out and arranging the tray can be performed smoothly, and the temperature lowering mode can be kept in a short time. In addition, changes in core temperature are suppressed for both hot and cold foods. In particular, the temperature of the tray can be reliably lowered to an appropriate temperature.

(3) A core temperature sensor for detecting the core temperature of the hot food placed on the tray is attached to the temperature lowering means, and a detection temperature of the core temperature sensor is predetermined in the temperature decrease control unit. When the temperature becomes lower than the set temperature, a temperature lowering interruption unit is provided to forcibly deactivate the cooling unit and the circulation fan.
It is regulated that the core temperature of the hot food is too low when the temperature lowering mode is executed.

(4) The target portion is the warming room, and the temperature lowering means detects the end of the reheating mode and door opening means for forcibly opening the open / close door of the warming room. A detection unit and a temperature lowering control unit that drives the door opening means when the end detection unit detects the end of the reheating mode are configured.
When the reheating mode is completed, the open / close door of the warm room is opened, and the warm air in the warm room is released to the outside of the room, thereby lowering the temperature of the warm room.

(5) The temperature lowering control unit is provided with a fan driving unit that drives the circulation fan provided in the first heat exchange chamber when the door opening means is driven.
The circulation fan is driven in conjunction with the opening of the open / close door, and the exhaust of warm air in the warm room is further promoted, so that the temperature of the warm room is lowered more effectively.

(6) The target portion is the warming chamber, and the temperature lowering means includes a window opening means for forcibly opening an exhaust window provided in the first heat exchange chamber so as to be openable and closable, and the reheating mode includes An end detection unit that detects the end of the reheating mode and a temperature decrease control unit that drives the window opening means when the end detection unit detects the end of the reheating mode.
When the reheating mode is completed, the exhaust window of the first heat exchange chamber is opened, so that the warm air in the warm room escapes from the exhaust window through the first heat exchange chamber, and the temperature of the warm room is lowered. .

(7) The temperature lowering control unit is provided with a fan driving unit that drives the circulation fan provided in the first heat exchange chamber when the window opening means is driven.
The circulation fan is driven in conjunction with the opening of the exhaust window, and the exhaust of warm air in the warm room is further promoted, so that the temperature of the warm room is lowered more effectively.

(8) The target unit is the first heat exchange chamber, and the temperature lowering unit detects an end of the reheating mode, an end detection unit detects the end of the reheating mode, and the cart is unloaded after the end of the reheating mode. A delivery detection unit that detects that the temperature has dropped, a temperature setting unit that sets an appropriate temperature when the first heat exchange chamber is lowered, a temperature sensor that detects the temperature of the first heat exchange chamber, and the cart has been delivered. A timer for measuring a later time, and within a predetermined time after the cart has been delivered, when the temperature detected by the temperature sensor is higher than a preset temperature, the first heat exchange chamber is provided with the Fan driving command means for driving the circulating fan and stopping the driving of the circulating fan when the detected temperature is lower than the set temperature.
When the cart is delivered for serving after the end of the reheating mode, the temperature lowering operation of the first heat exchange chamber is performed. Therefore, when a cart is put in preparation for the next school lunch and the refrigeration mode is started after a relatively short time, the refrigeration room can be quickly cooled to a predetermined refrigeration temperature.

  According to the cold storage apparatus of the present invention, the temperature of a predetermined target part in the apparatus can be quickly lowered at the end of the reheating mode.

1 is an exploded perspective view of a refrigeration apparatus according to Embodiment 1 of the present invention. A longitudinal sectional view of the front view Explanatory drawing which shows the use aspect of a refrigerator-freezer Timing chart showing changes in tray temperature Block diagram of temperature control system Flow chart of temperature drop control Block diagram of a temperature drop control system according to the second embodiment Flow chart of temperature drop control Block diagram of a temperature drop control system according to the third embodiment Flow chart of temperature drop control The fragmentary perspective view of the cart main body which concerns on Embodiment 4. FIG. Block diagram of the temperature control system Sectional drawing which shows the internal structure of the 1st heat exchange chamber which concerns on Embodiment 5. Block diagram of the temperature control system Block diagram of temperature drop control system according to Embodiment 6 Flow chart of temperature drop control Explanatory drawing which shows the use aspect of the refrigerator-freezer of related technology Timing chart showing changes in tray temperature in conventional example

<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS. The entire structure of the refrigeration apparatus of this embodiment will be described with reference to FIGS. 1 and 2. The cold storage apparatus includes a cart 10 for storing the tray X and a station 30 for storing the cart 10 so that the cart 10 can be taken in and out.
The cart 10 further includes a cart body 11 formed of a heat insulating box and a frame cart 20 that stores the tray X. Both the front and rear sides of the cart body 11 are opened, and a double-spread type heat insulating door 12 is mounted in each opening 11A. A caster 13 is provided on the bottom surface of the cart body 11.

The frame cart 20 has a structure in which a metal frame 23 is raised from the left and right side edges of the bottom plate 21 provided with casters 22, and can be inserted into and removed from the cart body 11 from the front side. A heat insulating partition wall 24 is provided in a substantially central portion in the left-right direction of the frame cart 20 over the entire front-rear direction. The partition wall 24 has a shape in which a plurality of unit partition walls 24A are stacked, and the tray X is stored in a plurality of stages while penetrating between the upper and lower unit partition walls 24A from both front and rear surfaces. Yes.
In the state in which the frame cart 20 is stored in the cart body 11, as shown in FIG. 2, the interior of the cart body 11 is divided into left and right by a partition wall 24, and a warming room 25H is on the left side of the partition wall 24 and on the right side. A refrigerator compartment 25C is formed.

The station 30 has a substantially box shape whose front is opened, and the cart 10 can be taken in and out through the opening. A first heat exchange chamber 31 and a second heat exchange chamber 32 are partitioned and formed side by side on the ceiling portion of the station 30, and the left first heat exchange chamber 31 is arranged above the warming chamber 25 </ b> H. Is provided with a cooler 33 serving as a cooling unit and a heater 34 serving as a heating unit, and the right second heat exchange chamber 32 disposed above the refrigerator compartment 25C has a cooler 33 serving as a cooling unit. Only provided. Circulating fans 35H and 35C are provided in the heat exchange chambers 31 and 32, respectively.
Both coolers 33 are connected in parallel to a refrigeration apparatus 37 including a compressor 38 and the like installed in the machine room 36 of the station 30 via an on-off valve.

  When the cart 10 is stored in the station 30, the first heat exchange chamber 31 is circulated between the first heat exchange chamber 31 and the warm storage chamber 25H by drawing the air in the cabinet from the ceiling of the warm storage chamber 25H. As a result, a first air circulation path 41 is formed so that the air exchanged by the air is driven from the side surface of the warm room 25H, and the cold room 25C is provided between the second heat exchange room 32 and the cold room 25C. A second air circulation path 42 is formed in which air that has been heat-exchanged is drawn from the side surface of the refrigerator compartment 25C by drawing the interior air from the ceiling and circulating the air in the second heat exchange chamber 32.

  An example of the usage pattern of the refrigeration apparatus of this embodiment is demonstrated with reference to FIG. First, hot and cold foods prepared for cooking and the like are divided and arranged in trays X, each tray X is stored in a frame cart 20, and the cart 10 is configured by storing the frame cart 20 in a cart body 11. (Laying process). Next, when the cart 10 is placed in the station 30 and the operation switch is turned on, the refrigeration mode is executed first. In the refrigeration mode, the cooler 33 is activated in both the heat exchange chambers 31 and 32, and cold air is circulated and supplied to both the refrigeration chamber 25H and the refrigeration chamber 25C. And cold food are refrigerated (chilled). More specifically, in this refrigeration mode, the internal temperature is detected by the temperature sensors 43H and 43C in the refrigerator compartment 25H and the refrigerator compartment 25C, respectively, and the detected temperature is compared with the set temperature, and based on the comparison. The operation of the coolers 33 in the heat exchange chambers 31 and 32 corresponding to the chambers 25H and 25C is controlled in accordance with the on / off switching of the on-off valves and the on / off switching of the compressor 38, and the warming chamber 25H The internal temperature of the refrigerator compartment 25C is maintained at a substantially set temperature.

When it reaches a predetermined time (set by a 24-hour timer) calculated backward from the distribution time of lunch, the mode is switched to the reheating mode. In the reheating mode, the first heat exchange chamber 31 switches to the operation of the heater 34, while the second heat exchange chamber 32 maintains the state where the cooler 33 is continuously operated. Thus, warm air is circulated in the warm room 25H and the hot food is reheated, while cold air is continuously circulated and supplied to the cold room 25C for chilled storage.
When the reheating mode is executed in the warm room 25H, as shown in FIG. 4, the heating operation and the steaming operation are continuously performed. In the heating operation, the warm room 25H is set to a set temperature (for example, 110 ° C.) and maintained at the same set temperature for a predetermined time (1 hour 5 minutes). In the steaming operation, only the circulation of warm air by turning off the heater 34 and driving only the circulation fan 35H is performed for the predetermined time. (11 minutes) only.

When the predetermined time comes, the reheating mode ends, and then the cart 10 is pulled out from the station 30 and the tray X is taken out and served for serving. Here, if the set temperature for reheating is as described above, the temperature of the tray X (the warming room 25H side) immediately after the end of the reheating mode is about 95 ° C., which is not suitable for taking out.
Therefore, in the present embodiment, when the reheating mode is finished, the temperature lowering mode for lowering the temperature of the warming room 25H is executed, and then the catering is performed.

In the present embodiment, as shown in FIG. 5, a control system for executing the temperature lowering mode is constructed. The temperature lowering operation of the present embodiment is performed using a refrigeration circuit equipped in the apparatus.
The control system is provided with a temperature drop control unit 50 that includes a microcomputer and can execute a predetermined program.
Connected to the input side of the temperature lowering control unit 50 are a reheating mode end detection unit 51 that detects when the reheating mode is ended, and a time setting unit 52 that sets the execution time of the temperature lowering mode.
Connected to the output side is a cooler 33 and a circulation fan operation switching unit 53 that synchronize switching between operation and non-operation of the cooler 33 and the circulation fan 35H in the first heat exchange chamber 31. Note that the operation of the cooler 33 involves driving the refrigeration apparatus 37 (compressor 38) and opening the on-off valve on the cooler 33 side.

  The temperature lowering control unit 50 includes a storage unit 54 that stores the execution time set by the time setting unit 52, and an operation command unit 55 that issues an operation command to the operation switching unit 53 when a detection signal indicating the end of the reheating mode is received. The timer 56 that counts from the time when the detection signal is received, the time measured by the timer 56 and the set time H stored in the storage unit 54 are compared, and the time measured reaches the set time H. A stop command unit 57 that issues a stop command to the operation switching unit 53 is provided.

Next, an example of the operation of the present embodiment will be described based on the timing chart of FIG. 4 and the flowchart of FIG. In the present embodiment, the set time H for the temperature lowering mode is set to “17 minutes”.
In the reheating mode, when the heating operation and the steaming operation are performed on the side of the warming room 25H and the steaming operation is finished, that is, when it is detected that the reheating mode is finished (Step S10 is “Yes”), a step is performed. In S11, an operation command is issued, and the cooler 33 and the circulation fan 35H on the first heat exchange chamber 31 side are operated, that is, the temperature lowering mode is started, and at the same time, the timer 56 starts measuring time in step S12. Along with the execution of the temperature lowering mode, cold air is circulated and supplied into the warming room 25H, whereby the temperature in the warming room 25H is lowered, and the tray X, tableware, and the like are eventually cooled.

  When the time-counting time in the temperature-decreasing mode reaches the set time H (17 minutes) (“Yes” in step S13), the timer 56 is reset, and then a stop command is issued in step S14. The operation of 35H is stopped, that is, the temperature lowering mode ends. In addition, you may make it display that the temperature-fall mode was complete | finished on the display parts 58 (refer FIG. 5), such as a buzzer and a lamp | ramp.

As described above, when the temperature lowering mode ends, the cart 10 is pulled out from the station 30, and the tray X is taken out and served for serving. At this time, since the temperature of the tray X is lowered to about 65 ° C., the catering work can be performed smoothly, and the tableware is also lowered to an appropriate temperature. There are no problems.
Since the temperature lowering mode is maintained for a relatively short time (17 minutes), the core temperature is suppressed from changing in both hot and cold foods.

  According to this embodiment, after the end of the reheating mode, the temperature lowering mode using the refrigeration circuit is executed, and the temperature of the warming room 25H is lowered in a short time. Therefore, the portion stored in the warming room 25H side of the tray X and the tableware can be lowered to an appropriate temperature in a short time, the work of taking out the tray X and serving it, and the operation of eating hot food with the tableware Can be done smoothly. In addition, since the temperature lowering mode is kept in a short time, the core temperature is suppressed from changing in both hot and cold foods, and the food can be eaten at an appropriate temperature.

<Embodiment 2>
Next, a second embodiment of the present invention will be described with reference to FIGS. In the second embodiment, the temperature lowering control shown in the first embodiment is changed to a means for issuing a temperature lowering mode stop command.
In the following, differences from the first embodiment will be mainly described, and portions having the same functions as those in the first embodiment will be denoted by the same reference numerals, and description thereof will be omitted or simplified.

In the control system of the second embodiment, the temperature sensor 60 that detects the temperature of the tray X stored in the warming chamber 25H and the appropriate temperature when the tray X is taken out are set on the input side of the temperature decrease control unit 50A. A temperature setting unit 61 for setting temperature T: 65 ° C. is connected.
In the temperature lowering control unit 50A, the timer (56) is omitted, and the stop command unit 57A receives the temperature of the tray X detected by the temperature sensor 60 and the set temperature of the tray X after the stop mode is started. When T is compared and the detected temperature falls to the set temperature T, it functions to issue a stop command to the operation switching unit 53.

The effect | action of this embodiment is demonstrated based on the flowchart of FIG.
In the reheating mode, the heating operation and the steaming operation are performed on the side of the warming room 25H, and when it is detected that the steaming operation is finished, that is, the reheating mode is finished (Step S20 is “Yes”), Step In S21, an operation command is issued, and the cooler 33 and the circulation fan 35H on the first heat exchange chamber 31 side are operated, that is, the temperature lowering mode is started. Along with this, cold air is circulated and supplied into the warming room 25H, whereby the temperature in the warming room 25H is lowered, and as a result, the tray X, tableware, and the like are cooled.

  After the temperature lowering mode is started, when the temperature of the tray X is detected by the temperature sensor 60 and the detected temperature falls to the set temperature T (65 ° C.) (step S22 is “YES”), a stop command is issued in step S23. The operation of the cooler 33 and the circulation fan 35H is stopped, that is, the temperature lowering mode ends. Similarly, the end of the temperature lowering mode may be displayed on the display unit 58 (see FIG. 7) such as a buzzer or a lamp.

  According to the second embodiment, as in the first embodiment, after the reheating mode is finished, the temperature lowering mode using the refrigeration circuit is executed, and the temperature of the warming room 25H is lowered in a short time. The part stored in the warming room 25H side and the tableware can be lowered to an appropriate temperature in a short time, and the operation of taking out the tray X and serving it, and the operation of eating hot food with the tableware can be performed smoothly. Moreover, since the temperature lowering mode can be kept in a short time, the core temperature is suppressed from changing in both hot and cold foods, and the food can be eaten at an appropriate temperature. In particular, the temperature of the tray X can be reliably lowered to an appropriate temperature.

<Embodiment 3>
A third embodiment of the present invention will be described with reference to FIGS. In the third embodiment, a function for restricting the core temperature of the hot food from being excessively lowered when the temperature lowering mode is executed is added to the temperature lowering control of the second embodiment.
In the control system of the third embodiment, a core temperature sensor 65 that detects the core temperature of the hot food stored in the warm storage room 25H is connected to the input side of the temperature decrease control unit 50B. Moreover, in the temperature setting part 61A, the minimum appropriate temperature (setting temperature Ts: it sets separately with the kind of hot food) of the core temperature of hot food can be set collectively.
After the temperature lowering mode is started, the temperature lowering control unit 50B compares the core temperature of the hot food detected by the core temperature sensor 65 with the set temperature Ts of the core temperature, and the detected temperature drops to the set temperature Ts. Then, an interruption command unit 66 for issuing a stop command (interruption command) to the operation switching unit 53 is added.

  As shown in FIG. 10, whether the “core temperature” of the hot food detected by the core temperature sensor 65 is equal to or lower than the set temperature Ts between step S21 and tray temperature determination step S22. Step S30 for determining whether or not is provided, and if the step S30 is “NO”, the process proceeds to step S22, and if “YES”, the process proceeds to step S23. In addition, when step S22 is "NO", it returns to step S30 for core temperature discrimination | determination.

Therefore, in the third embodiment, after the temperature lowering mode is started and before the temperature of the tray X decreases to the set temperature T (65 ° C.), the “core temperature” decreases to the set temperature Ts (step S30 is “YES”). ) In step S23, a stop command is issued, and the temperature lowering mode is interrupted (terminated).
It is restricted that the core temperature of the hot food drops too much when the temperature lowering mode is executed.

<Embodiment 4>
A fourth embodiment of the present invention will be described with reference to FIGS. In the first to third embodiments, the case where the refrigeration circuit is applied to lower the temperature of the warming room 25H is illustrated. However, in this fourth embodiment, the temperature of the warming room 25H is lowered using mechanical means. It has become.
In the cold storage apparatus, as shown in FIG. 11, the double door heat insulation door 12 provided in the opening 11 </ b> A of the cart body 11 has a latched portion 15 provided on the upper edge of the heat insulation door 12. By being locked to a latch portion 16 provided on the upper edge of 11A, the door is kept closed.

As the temperature lowering means, as shown in the figure, a cylinder 17 (corresponding to a door opening means) capable of releasing the latch of the heat insulating door 12 on the warming chamber 25H side is provided on the upper edge of the opening 11A. Yes. When the cylinder 17 is driven, the piston rod 17A moves forward and abuts against the engagement portion between the latched portion 15 and the latch portion 16 and functions to release the latch.
On the other hand, as shown in FIG. 12, a temperature lowering control unit 70 is provided, and when the reheating mode end detection unit 51 detects that the reheating mode has ended, the temperature lowering control unit 70 detects the end of the reheating mode. The drive signal is sent out.

That is, in the fourth embodiment, when the cylinder 17 is driven at the timing when the reheating mode is finished, the latch of the heat insulating door 12 on the side of the warming chamber 25H is released, and the packing provided on the peripheral edge of the back surface is counteracted. The heat insulating door 12 is slightly opened by force or the like. As a result, the warm air in the warm room 25H escapes to the outside, and the temperature of the warm room 25H is lowered.
In addition, when the heat insulation door 12 is unlatched and a drive signal is sent to the circulation fan drive unit 72 that controls the drive of the circulation fan 35H of the first heat exchange chamber 31, and the circulation fan 35H is driven, the warming room 25H The warm air is more easily exhausted, and the temperature of the warm room 25H is lowered more effectively.

<Embodiment 5>
A fifth embodiment of the present invention will be described with reference to FIGS. In the fifth embodiment as well, the temperature of the warming room 25H is lowered using mechanical means.
As the temperature lowering means, as shown in FIG. 13, an exhaust window 80 in which a window plate 82 is swingably opened and closed with respect to the window hole 81 on the back surface of the first heat exchange chamber 31 provided in the station 30. In addition to being provided, a window opening / closing portion 84 capable of opening and closing the exhaust window 80 is provided.

  On the other hand, as shown in FIG. 14, a temperature lowering control unit 70A is provided, and when the reheating mode end detection unit 51 detects that the reheating mode has ended, the temperature lowering control unit 70A On the other hand, an open signal is sent for a predetermined time.

That is, in the fifth embodiment, when the reheating mode ends, the exhaust window 80 of the first heat exchange chamber 31 is opened for a predetermined time, so that the warm air in the warm room 25H passes through the first heat exchange chamber 31. As a result, the exhaust window 80 escapes to the outside and the temperature of the warming room 25H is lowered.
As in the fourth embodiment, when the circulation fan 35H (see FIG. 2) of the first heat exchange chamber 31 is driven in synchronism with the opening of the exhaust window 80, the warm air in the warm chamber 25H is further exhausted. In addition, the temperature of the warming room 25H is more effectively lowered.

<Embodiment 6>
A sixth embodiment of the present invention will be described with reference to FIGS. 15 and 16.
As described above, in the general usage mode of the refrigeration / heating apparatus, the refrigeration mode and the reheating mode are performed after the arranging step, and the arrangement is performed after the reheating mode is finished. At the end of the reheating mode, the first heat exchange chamber 31 is still in a high temperature state.
Here, when preparing for breakfast and returning home immediately after dinner, the refrigeration mode is executed while the temperature of the first heat exchange chamber 31 is high. It takes time for the inside to cool to a predetermined refrigeration temperature.

In the sixth embodiment, the first heat exchange chamber 31 is intended to be quickly cooled after the reheating mode is finished.
In order to perform temperature lowering control of the first heat exchange chamber 31, a control system as shown in FIG. 15 is constructed.
The control system is provided with a temperature drop control unit 90 that includes a microcomputer and can execute a predetermined program.
On the input side of the temperature lowering control unit 90, a reheating mode end detection unit 51 that detects when the reheating mode ends, and an exit detection unit that detects that the cart 10 has exited after the end of the reheating mode. 91, a temperature sensor 43H (see FIG. 2) that detects the temperature of the first heat exchange chamber 31, and a temperature setting unit 92 that sets an appropriate temperature when the temperature of the first heat exchange chamber 31 is lowered are connected.
A circulation fan 35H provided in the first heat exchange chamber 31 is connected to the output side.

The temperature lowering control unit 90 includes a timer 93 that measures the time after the cart 10 is delivered, a temperature reading unit 94 that reads the temperature of the first heat exchange chamber 31 detected by the temperature sensor 43H, and a first heat exchange. A comparison unit 95 that compares the detected temperature of the chamber 31 with the set temperature, and a fan drive command unit 96 that commands the drive and stop of the circulation fan 35H based on the comparison result in the comparison unit 95 are provided.
Specifically, the fan drive command unit 96 issues a drive command to the circulation fan 35H when the detected temperature is higher than the upper limit set temperature Tu, and the circulation fan 35H when the detected temperature is lower than the lower limit set temperature Td. It functions to issue a stop command.

An example of the operation of the sixth embodiment will be described based on the flowchart of FIG.
When the reheating mode ends (step S40 is “YES”) and it is detected that the cart 10 has been taken out of the station 30, that is, has been discharged (step S41 is “YES”), in step S42, by the timer 93 After the timing is started, the detected temperature of the first heat exchange chamber 31 is compared with the set temperature in step S43.

  If the detected temperature is equal to or higher than the upper limit set temperature Tu (“YES” in step S44), a drive command for the circulation fan 35H is issued in step S45, and the circulation fan 35H in the first heat exchange chamber 31 is driven. As long as the time after delivery of the cart 10 has not reached a predetermined time (for example, 5 minutes) (step S46 is “NO”), the circulation fan 35H continues to be driven, so that the outside air enters the first heat exchange chamber 31. By circulating, the inside of the first heat exchange chamber 31 is gradually cooled.

  When the detected temperature of the first heat exchange chamber 31 falls below the lower limit set temperature Td after a lapse of time (step S47 is “YES”), a stop command for the circulation fan 35H is issued in step S48, and the circulation fan 35H is stopped. The Thereby, the temperature lowering operation of the first heat exchange chamber 31 is stopped. After that, when a predetermined time (5 minutes) has elapsed since the cart 10 was delivered (“YES” in step S46), it is confirmed that the circulation fan 35H is stopped (“NO” in step S49). The program ends.

  When the temperature lowering operation stops and the temperature of the first heat exchange chamber 31 rises and the detected temperature rises again to the upper limit set temperature Tu or more (step S44 is “YES”), the circulation fan 35H is again turned on in step S45. A drive command is issued, the circulation fan 35H is driven, and the temperature lowering operation is resumed. Thereafter, when the time after delivery of the cart 10 reaches a predetermined time (5 minutes), the circulation fan 35H is stopped in step S50, and the program is terminated.

  According to this embodiment, when the cart 10 is taken out from the station 30 for serving after the end of the reheating mode, the temperature lowering operation of the first heat exchange chamber 31 is performed. For this reason, when the cart 10 is put in preparation for the next meal after a relatively short time and the refrigeration mode is started, the warming room 25H can be quickly cooled to a predetermined refrigeration temperature.

<Related technologies>
As shown in FIG. 17, the heat retention mode may be executed following the reheating mode.
In the heat retention mode, the warm room 25H is maintained at about 70 ° C and the cold room 25C is maintained at about 5 ° C. In the reheating mode, the core temperature of the hot food rises to about 75 ° C., whereas in the heat retaining mode, the core temperature of the hot food is maintained at about 65 ° C. suitable for eating.
It is effective when applied when the time between the end of the reheating mode and the time of serving is available.
In addition, it is also possible to use such that only the heat retention mode is executed after the arrangement.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In Embodiment 2, the temperature sensor for detecting the temperature of the tray may detect the temperature of the tableware placed on the tray.
(2) The control adopted in the third embodiment to stop (interrupt) the temperature lowering mode when the core temperature of the hot food is lowered to a predetermined value may be applied to the temperature lowering control of the first embodiment.
(3) The various set temperatures and various set times exemplified in the temperature drop control of each of the above embodiments are merely examples, and can be arbitrarily selected within a range that does not deviate from the respective purposes.
(4) The present invention can be similarly applied to a refrigerating / heating apparatus using a cart of a type in which the cart body is directly divided into a refrigerating room and a refrigerating room without providing a frame cart. is there.

  X ... Tray 10 ... Cart 11 ... Cart body 11A ... Opening (entrance / exit) 12 ... Thermal insulation door (opening / closing door) 15 ... Latched part 16 ... Latching part 17 ... Cylinder (door opening means) 20 ... Frame cart 24 ... Partition wall 25H ... Warm room (target part) 25C ... Refrigeration room 30 ... Station 31 ... First heat exchange room (target part) 32 ... Second heat exchange room 33 ... Cooler (cooling part) 34 ... Heater (heating part) 35H , 35C ... circulation fan 41, 42 ... air circulation path 43H, 43C ... temperature sensor 50, 50A, 50B ... temperature drop control unit 51 ... reheating mode end detection unit 52 ... time setting unit 53 ... cooler, circulation fan operation switching unit 54 ... Storage unit 55 ... Operation command unit 56 ... Timer 57, 57A ... Stop command unit 60 ... Temperature sensor 61, 61A ... Temperature setting unit 65 ... Core temperature sensor 6 ... Interruption command section 70, 70A ... Temperature drop control section 71 ... Cylinder drive section 72 ... Circulation fan drive section 75 ... Window opening / closing drive section 80 ... Exhaust window 84 ... Window opening / closing section 90 ... Temperature drop control section 91 ... Outlet detection section 92 ... Temperature setting unit 93 ... Timer 94 ... Temperature reading unit 95 ... Comparison unit 96 ... Fan drive command unit

Claims (7)

It has a cart body made of heat-insulated box with an entrance with an open / close door, and a heat-insulating partition wall that divides the cart body into a warm room and a cold room. A cart in which a tray passes through the partition wall and is stored in a plurality of stages in a form extending between the warm room and the cold room;
A station in which the cart is retractably stored, a first heat exchange chamber equipped with a cooling unit, a heating unit, and a circulation fan, and a second heat exchange chamber equipped with a cooling unit and a circulation fan are partitioned and formed; ,
When the cart is stored in the station, an air circulation path is formed separately between the first heat exchange chamber and the warm room and between the second heat exchange chamber and the cold room. When,
An operation control means for controlling the operation of the cooling unit, the heating unit and the circulation fan is provided,
The cooling unit is operated in both the heat exchange chambers, and cold air is circulated and supplied to both the warm room and the cold room, so that both hot and cold foods on the tray are kept cold. When,
While the cooling unit is switched from the cooling unit to the heating unit in the first heat exchange chamber, the cooling unit is continuously operated in the second heat exchange chamber, and warm air is circulated in the warming chamber. A reheating mode in which the hot food is reheated while the refrigerating mode in which the cold food continues to be refrigerated and stored in the refrigerating room side,
A temperature lowering means for lowering the temperature of a predetermined target portion in the apparatus at the end of the reheating mode is provided ;
The target part is the warm room,
The temperature lowering unit is configured to detect the cooling of the first heat exchange chamber when the end of the reheating mode is detected by the end detection unit, a timer, and the end detection unit that detect that the reheating mode is ended. And an operation control unit for operating the circulation fan and the circulation fan for a predetermined time set in the timer,
The temperature lowering means is provided with a core temperature sensor for detecting the core temperature of the hot food placed on the tray, and when the detection temperature of the core temperature sensor is equal to or lower than a predetermined set temperature, A cooling / warming apparatus, further comprising a temperature lowering interruption unit that forcibly deactivates the cooling unit and the circulation fan . It has a cart body made of heat-insulated box with an entrance with an open / close door, and a heat-insulating partition wall that divides the cart body into a warm room and a cold room. A cart in which a tray passes through the partition wall and is stored in a plurality of stages in a form extending between the warm room and the cold room;
A station in which the cart is retractably stored, a first heat exchange chamber equipped with a cooling unit, a heating unit, and a circulation fan, and a second heat exchange chamber equipped with a cooling unit and a circulation fan are partitioned and formed; ,
When the cart is stored in the station, an air circulation path is formed separately between the first heat exchange chamber and the warm room and between the second heat exchange chamber and the cold room. When,
An operation control means for controlling the operation of the cooling unit, the heating unit and the circulation fan is provided,
The cooling unit is operated in both the heat exchange chambers, and cold air is circulated and supplied to both the warm room and the cold room, so that both hot and cold foods on the tray are kept cold. When,
While the cooling unit is switched from the cooling unit to the heating unit in the first heat exchange chamber, the cooling unit is continuously operated in the second heat exchange chamber, and warm air is circulated in the warming chamber. A reheating mode in which the hot food is reheated while the refrigerating mode in which the cold food continues to be refrigerated and stored in the refrigerating room side,
A temperature lowering means for lowering the temperature of a predetermined target portion in the apparatus at the end of the reheating mode is provided;
The target part is the warm room,
The temperature lowering means includes an end detection unit that detects that the reheating mode has ended, a temperature sensor that detects the temperature of the tray stored in the warm room, and the end detection unit that performs the reheating mode. When the end is detected, the cooling unit of the first heat exchange chamber and the circulation fan are operated, and when the temperature detected by the temperature sensor drops to a predetermined set temperature, the cooling unit and the circulation An refrigeration / heating apparatus comprising: an operation control unit that deactivates the fan . The temperature lowering means is provided with a core temperature sensor for detecting the core temperature of the hot food placed on the tray, and when the detection temperature of the core temperature sensor is equal to or lower than a predetermined set temperature, The cooling / heating apparatus according to claim 2, further comprising a temperature lowering interruption unit that forcibly deactivates the cooling unit and the circulation fan . It has a cart body made of heat-insulated box with an entrance with an open / close door, and a heat-insulating partition wall that divides the cart body into a warm room and a cold room. A cart in which a tray passes through the partition wall and is stored in a plurality of stages in a form extending between the warm room and the cold room;
A station in which the cart is retractably stored, a first heat exchange chamber equipped with a cooling unit, a heating unit, and a circulation fan, and a second heat exchange chamber equipped with a cooling unit and a circulation fan are partitioned and formed; ,
When the cart is stored in the station, an air circulation path is formed separately between the first heat exchange chamber and the warm room and between the second heat exchange chamber and the cold room. When,
An operation control means for controlling the operation of the cooling unit, the heating unit and the circulation fan is provided,
The cooling unit is operated in both the heat exchange chambers, and cold air is circulated and supplied to both the warm room and the cold room, so that both hot and cold foods on the tray are kept cold. When,
While the cooling unit is switched from the cooling unit to the heating unit in the first heat exchange chamber, the cooling unit is continuously operated in the second heat exchange chamber, and warm air is circulated in the warming chamber. A reheating mode in which the hot food is reheated while the refrigerating mode in which the cold food continues to be refrigerated and stored in the refrigerating room side,
A temperature lowering means for lowering the temperature of a predetermined target portion in the apparatus at the end of the reheating mode is provided;
The target part is the warm room,
The temperature lowering means includes a door opening means capable of forcibly opening the open / close door of the warming room, an end detecting section for detecting that the reheating mode is ended, and the end detecting section ending the reheating mode. And a temperature-decreasing control unit that drives the door opening means when it is detected . 5. The temperature lowering control unit is provided with a fan driving unit that drives the circulation fan provided in the first heat exchange chamber when the door opening means is driven. The cold storage apparatus as described in 4 . It has a cart body made of heat-insulated box with an entrance with an open / close door, and a heat-insulating partition wall that divides the cart body into a warm room and a cold room. A cart in which a tray passes through the partition wall and is stored in a plurality of stages in a form extending between the warm room and the cold room;
A station in which the cart is retractably stored, a first heat exchange chamber equipped with a cooling unit, a heating unit, and a circulation fan, and a second heat exchange chamber equipped with a cooling unit and a circulation fan are partitioned and formed; ,
When the cart is stored in the station, an air circulation path is formed separately between the first heat exchange chamber and the warm room and between the second heat exchange chamber and the cold room. When,
An operation control means for controlling the operation of the cooling unit, the heating unit and the circulation fan is provided,
The cooling unit is operated in both the heat exchange chambers, and cold air is circulated and supplied to both the warm room and the cold room, so that both hot and cold foods on the tray are kept cold. When,
While the cooling unit is switched from the cooling unit to the heating unit in the first heat exchange chamber, the cooling unit is continuously operated in the second heat exchange chamber, and warm air is circulated in the warming chamber. A reheating mode in which the hot food is reheated while the refrigerating mode in which the cold food continues to be refrigerated and stored in the refrigerating room side,
A temperature lowering means for lowering the temperature of a predetermined target portion in the apparatus at the end of the reheating mode is provided;
The target part is the warm room,
The temperature lowering means includes a window opening means capable of forcibly opening an exhaust window provided in the first heat exchange chamber so as to be opened and closed, an end detection section for detecting that the reheating mode is ended, and the end detection section. And a temperature-decreasing control unit that drives the window opening means when the end of the reheating mode is detected by the refrigeration / heating apparatus. The fan temperature control section is provided with a fan driving section for driving the circulation fan provided in the first heat exchange chamber when the window opening means is driven. The cold storage apparatus as described in 4 .

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