JP2019063148A - Reheater - Google Patents

Abstract

To provide a reheater for preventing dew condensation on a surface of a connection part between a station and a cart at the time of cooling.SOLUTION: A reheater 1 comprises a station 10 and a cart 100 that is connected to the station 10. A frame aperture 15 of the station 10 and an aperture 113 of the cart 100 are connected. At the frame aperture 15 is provided a dew prevention heater 152 in order to prevent dew condensation on a surface of a connection part between the station 10 and the cart 100 at the time of cooling. When a cooling chamber side temperature sensor 63 detects a temperature equal to or lower than a predetermined temperature, the dew prevention heater 152 is energized to prevent dew condensation on a surface of the frame aperture 15, which enables prevention of contamination of the surface of the frame aperture 15 and a floor caused by a drip of dew condensation water or the like.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a reheating apparatus that cools food and the like and heats it as necessary.

  There is known a technology for uniformly heating or cooling food and the like (Patent Document 1).

  The reheating cart described in Patent Document 1 includes a temperature control device having a storage unit, a serving cart body stored in the storage unit, and a serving cart having a removable handle, and the storage unit Can be detachably connected to the temperature control device main body of the temperature control device through the station frame member. Cold air or hot air is supplied from the hot air cold air generator of the temperature control unit main body, and food stored in the distribution cart can be stored cold or reheated, and the handle of the distribution cart is smartly held on any outer surface of the reheating cart It is disclosed that it can.

JP, 2015-154824, A

  In the reheating cart shown in Patent Document 1, operation is started with the storage unit (cart) and the temperature control device (station) connected, and cold air is supplied from the station to the cart so as to cool the entire food. As a result, the temperature of the outer surface of the station frame member may decrease to cause condensation. When dew condensation occurs, dew condensation water accumulates below the dirt, and the floor surface becomes dirty, and while dew condensation is repeated, there is a problem that there is a possibility of becoming unsanitary such as adhesion of mold and dirt.

  An object of the present invention is to provide a reheating device that prevents condensation on the surface of the connection between the station and the cart during cooling.

  A reheating apparatus according to the present invention includes a station including a heating and cooling chamber capable of supplying hot air and cold air and a cooling chamber capable of supplying cold air, a tray accommodating a tray on which dishes can be placed, and a cart connectable with the station A control unit for controlling supply of hot air and cold air from the station, the station having a case opening which is a portion connected to the cart, and the case opening is capable of generating heat. A heater is provided.

  As one aspect of the reheating apparatus of the present invention, for example, the housing opening has a frame-like protruding part protruding like a frame, and the dew-proof heater is embedded in the frame-like protruding part.

  As one aspect of the reheating apparatus of the present invention, for example, a plurality of dew protection heaters are provided.

  As one aspect of the reheating apparatus of the present invention, for example, the heat generation temperature of the top surface dew-proof heater provided on the upper protrusion of the frame-like protrusion is higher than the heat generation temperature of other dew-proof heaters.

As one aspect of the reheating apparatus according to the present invention, for example, a heating / cooling chamber side dew-deposition heater disposed corresponding to the heating / cooling chamber, and a cooling chamber-side dew deposition heater disposed corresponding to the cooling chamber .

  In the reheating device of the present invention, a dew proof heater capable of generating heat is provided at the case opening of the station to which the cart is connected, and condensation on the surface of the case opening that may be caused by cold wind is generated by the heat of the dew proof heater It is possible to prevent contamination of the surface and floor of the case opening due to dripping of condensed water and the like.

BRIEF DESCRIPTION OF THE DRAWINGS The front perspective view which shows an example of the reheating apparatus which concerns on this invention. The disassembled perspective view of the reheating apparatus which concerns on FIG. AA sectional drawing of FIG. Sectional drawing which pulled out the 2nd cart which concerns on FIG. The front view of the station concerning the present invention. (A) Front perspective view of station in FIG. 5, (b) An enlarged view of part A of (a). The front perspective view of the station which concerns on this invention, and the perspective view of Example 1 of a dew proof heater in a frame-like protrusion part. The front perspective view of the station which concerns on this invention, and the perspective view of Example 2 of the dew prevention heater in a frame-like protrusion part. The block diagram which shows an example of the reheating apparatus which concerns on this invention. The schematic process drawing which shows the operation | movement of the reheating apparatus which concerns on this invention. FIG. 5 is a flowchart of the operation of the reheating apparatus according to the present invention. The schematic diagram which shows the electricity supply rate control of the dew protection heater which concerns on this invention.

  Hereinafter, preferred embodiments of the reheating apparatus according to the present invention will be described in detail based on FIGS. 1 to 12.

  FIG. 1 is a front perspective view showing an example of a reheating apparatus according to the present invention. FIG. 2 is an exploded perspective view of the reheating device in FIG. FIG. 3 is a cross-sectional view taken along the line AA of FIG. FIG. 4 is a cross-sectional view of the second cart in FIG. 3. FIG. 5 is a front view of a station according to the present invention. 6A is a front perspective view of the station in FIG. 5A, and FIG. 6B is an enlarged view of a portion A of FIG. FIG. 7 is a front perspective view of the station according to the present invention and a perspective view of Example 1 of the dew-proof heater in the frame-like protrusion. FIG. 8 is a front perspective view of a station according to the present invention and a perspective view of Embodiment 2 of a dew-proof heater in a frame-like protrusion. The reheating apparatus of the present embodiment will be described in detail based on FIGS. 1 to 8.

  The reheating apparatus 1 of the present embodiment includes a station 10 which is placed on a floor or the like, and a independently movable cart 100 connected to the station 10.

  The station 10 is a device capable of supplying hot air or cold air to the cart 100, and includes a case 11 having a substantially rectangular shape, a machine room 12 placed on the top of the case 11, a case 11 as a floor, etc. And fixed legs 11a fixed to the In the machine room 12, a control unit 13 that controls the station 10 and the entire cart 100 and controls the supply of hot air and cold air from the station 10, and a cooling device 14 are disposed. In the station 10, three sides, upper and lower and side portions, are covered with a housing 11, and a portion connected to the cart 100 is provided with a housing opening 15.

  The housing opening 15 is provided with a frame-like projecting part 151 projecting outward in a frame shape from the station 10 in order to connect with the cart 100, and the frame-like projecting part 151 is capable of generating heat 152 is provided.

  An operation unit 16 for operating the reheating apparatus 1 is disposed on the side of the case opening 15. The operation unit 16 is formed of a touch screen or the like and is electrically connected to the control unit 13. In the housing 11, a heating / cooling chamber 20 capable of supplying hot air and cold air, and a cooling chamber 30 capable of supplying cold air are respectively provided on the left and right via the first partition plate 17. In addition to the touch screen, the operation unit 16 may be a hard button type, an audio input type, or a communication type with a terminal.

  The heating and cooling chamber 20 includes a first air blowing unit 40 that supplies hot air or cold air to the cart 100 and a first suction unit 50 that suctions the air sent to the cart 100. Similarly, the cooling chamber 30 also includes a second blowing unit 60 that supplies cold air and a second suction unit 70 that sucks the air sent into the cart 100.

  The first blower section 40 of the heating and cooling chamber 20 is provided with a blower 41 for supplying a wind to the cart 100, and the blower 41 is rotated by the drive of a motor 42 or the like to generate a flow of wind. A fan case 45 for guiding the wind from the fan 43 to the air blowing opening 44 and housing the fan 43 is provided. Then, the hot air or cold air supplied from the heating and cooling chamber 20 is blown out to the cart 100 from the air blowing opening 44.

  The first suction unit 50 has a first suction port 51 for suctioning the air in the cart 100, a first suction duct 52 for guiding the suctioned air, and a first suction opening for suctioning the suctioned air into the fan 43. And 53. That is, the first suction port 51 is formed to open toward the cart 100 when the station 10 and the cart 100 are connected, and the first suction duct 52 is formed at the first suction port 51 and the first suction opening 53. It is in communication. A heating / cooling chamber side temperature sensor 54 for detecting the temperature inside the cart 100 is provided inside the first suction port 51.

  Further, the first air blower 40 includes a heater 21 provided at the peripheral portion of the fan 43 for heating air flow, and the first suction air 50 has a first cooler 22 for cooling air air. In the present embodiment, the air is cooled by the first cooler 22 disposed between the first air intake duct 52 and the first air intake opening 53 when cold air is produced, and the air of the fan 43 is produced when hot air is produced. It heats with the heater 21 provided in the peripheral part.

  At an upper portion of the heating and cooling chamber 20, an exhaust duct 25 which protrudes into the machine chamber 12 and connects the heating and cooling chamber 20 to the outside air is provided. The open / close lid 26 is attached to the tip of the exhaust duct 25 so that the open / close lid 26 can be opened and closed around the open / close shaft 27. In the present embodiment, the opening and closing of the open / close lid 26 is performed by the push rod 29 moved up and down by driving the solenoid 28, but the open / close operation of the open / close lid 26 is not limited to the upper and lower, but various structures are possible. Further, the mechanism is not limited to the open / close lid 26 as long as it can be opened and closed.

  In the heating and cooling chamber 20, although the first air blowing unit 40 and the first suction unit 50 have been described, the cooling chamber 30 is similarly provided with the second air blowing unit 60 and the second suction unit 70. The generation of the wind in the heating / cooling chamber 20 is performed by the rotation of the fan 43, but in the cooling chamber 30, the generation of the wind is performed by the rotation of the intake fan 71 of the second suction unit 70. In the present embodiment, a plurality of intake fans 71 are vertically arrayed on the side where the cart 100 is connected, and the air inside the cart 100 is sucked into the cooling chamber 30 by the rotation of the intake fans 71.

  The drawn air passes through the second air intake duct 72 of the second suction unit 70 and is cooled by the second cooler 31. The cooled air becomes cold air and is guided to the second air duct 61 of the second air blower 60 and fed into the cart 100 from the second air blower opening 62 of the second air blower 60. The second blowing opening 62 is disposed on the opposite side of the station 10 to the side where the first intake opening 53 is provided. A cooling chamber side temperature sensor 63 for detecting the temperature inside the cart 100 is provided inside the second air duct 61.

  The cart 100 includes a first cart 110 and a second cart 120 which can be separated from the first cart 110. The first cart 110 has a vertically long, substantially rectangular box-shaped housing 111, a caster 112 which can support and move the housing 111 and is fixed to the bottom of the housing 111, and the side where the first cart 110 and the station 10 are connected. The second cart 120 is stored in the case 111 on the opposite side of the opening 113, and the first cart 110 to the second cart 120 are opened. It is provided with the opening part 114 which enables separate movement, and the opening-closing door 114a which opens and closes the opening part 114. FIG.

  The second cart 120 is formed of a plurality of columns 121 in a substantially rectangular shape, which is vertically long, and a caster 122 which makes the second cart 120 movable is fixed to the bottom of the columns 121. Further, the second cart 120 is provided with a second partition plate 123 which is continuous with the first partition plate 17 of the station 10 at a substantially central portion, and the heating and cooling unit 124 communicated with the heating and cooling chamber 20 by the second partition plate 123 and cooling. Cooling portions 125 communicating with the chamber 30 are provided separately on the left and right, respectively.

  The second partition 123 separates a space communicating with the heating and cooling chamber 20 and a space communicating with the cooling chamber 30 when the station 10 and the cart 100 are connected, and is positioned continuously with the first partition 17. The hot air or cold air supplied from the heating and cooling chamber 20 can be sent only to the heating and cooling unit 124, and the cold air supplied from the cooling chamber 30 can be sent only to the cooling unit 125.

  The column 121 supports the tray 127 on which the tableware 126 containing food for food is placed, and the central portion of the tray 127 can be inserted into the second partition plate 123 and can be stored in the second cart 120 in multiple stages. There is.

  The station 10 and the cart 100 connect the case opening 15 of the station 10 and the opening 113 of the cart 100 to, for example, their respective joint parts via packing etc., and close the open / close door 114a, thereby opening and closing the door The inner surface of 114 a is in close contact with the second partition plate 123 via a packing or the like, and two left and right closed spaces, that is, a heating and cooling unit 124 and a cooling unit 125 are formed. By drawing hot air or cold air evenly sent from the station 10 into the two closed spaces in the cart 100 at the station 10 again, a wind flow is generated in the cart 100 to circulate air in the respective spaces. The food or the like of the tableware 126 stored in the cart 100 is uniformly heated or cooled.

  Heating is performed, for example, by cooling and storing the meal stored in the heating and cooling unit 124 side with cold air, and stopping the first cooler 22 and turning on the heater 21 at a preset reheating start time. Then, the air sent from the fan 43 is switched to the hot air (warm air) to warm the food, and the food is distributed by the cart 100.

  The reheating device 1 according to the present embodiment is a device that connects the cart 100 to the station 10 and cools or heats food or the like stored in the cart 100 with cold air or hot air. In order to prevent condensation on the surface of the connection portion between the portion 15 and the opening portion 113 of the cart 100, the frame-like protruding portion 151 which is the housing opening portion 15 is provided with a dew-proof heater 152 capable of generating heat. There is.

  The dew-proof heater 152 warms the surface of the case opening 15 when energization is started by the control unit 13, and prevents dew condensation at the connection portion. The dew-proof heater 152 is controlled based on the temperature detected by the heating / cooling chamber side temperature sensor 54 or the cooling chamber side temperature sensor 63 measuring the temperature on the cart 100 side, and the detected temperature falls below a predetermined temperature The controller 13 controls the power supply to be started. When the heating and cooling chamber 20 is switched to heating, the energization of the anti-dew heater 152 may be controlled only by the cooling chamber side temperature sensor 63.

  The frame-like protrusion 151 has a substantially square shape protruding like a frame, and includes an upper protrusion 151a, a lower protrusion 151b, left and right left protrusions 151c, and a right protrusion 151d. Further, a first partition plate 17 is provided at a substantially central portion of the frame-like protrusion 151 to divide the heating / cooling chamber 20 capable of supplying hot air and cold air, and the cooling chamber 30 capable of supplying cold air.

  The dew prevention heater 152 is provided on each of the protrusions 151 a, 151 b, 151 c, and 151 d that divides the four sides of the housing opening 15. In the present embodiment, the protrusions 151a, 151b, 151c, and 151d are embedded in the protrusions 151a, 151b, 151c, and 151d.

  The dew prevention heater 152 may be single or may be divided into a plurality. 7 and 8 show an example in which a plurality of dew proof heaters 152 are provided, and FIG. 7 shows Example 1 and FIG. 8 shows Example 2. 7 and 8 together with a front perspective view of the station 10, in order to explain the dew-proof heater 152 embedded in the frame-like protrusion 151, a perspective view in which the frame-like protrusion 151 is separated is used. ing.

  The dew proof heater 152 of the first embodiment includes a top dew proof heater 152a provided on the upper protrusion 151a, and a substantially U-shaped frame dew dew heater provided on the lower protrusion 151b and the left protrusion 151c and the right protrusion 151d. And 152b. The top surface dew-proof heater 152a and the frame heat-proof heater 152b are electrically connected in parallel and connected so as to be able to control current flow.

  The top dew protection heater 152a and the frame protection dew heater 152b may be the same type of heater, but use a heater having a higher power per unit area in comparison with the top protection dew heater 152b for the top protection heater 152a. Is desirable. The surface of the upper protrusion 151a has a substantially horizontal shape, so condensation water tends to collect, but the surface temperature on the upper protrusion 151a side is higher than the surface temperature of the other protrusions 151b, 151c, 151d. By doing so, dew condensation can be reliably prevented on the side of the upper protruding portion 151a where condensation water tends to be accumulated and become unhealthy. As described above, the top dew proof heater 152a of the first embodiment is set so that the heat generation temperature of the top dew proof heater 152a is higher than the heat generation temperature of the other frame dew proof heaters 152b.

  The dew proof heaters 152 of the second embodiment are disposed on the left and right sides of the first partition plate 17 respectively, and substantially U-shaped heating / cooling chamber side dew dew heaters 152 c disposed corresponding to the heating / cooling chamber 20 And a substantially U-shaped cooling chamber side dew-proof heater 152 d disposed corresponding to the cooling chamber 30.

  The heating / cooling chamber side dew-proof heater 152c and the cooling chamber side dew-proof heater 152d may be the same type of heater. The heating / cooling chamber side dew-proof heater 152c and the cooling chamber side dew-proof heater 152d are connected independently so as to be able to individually control energization. Power consumption can be suppressed by stopping the heating / cooling chamber side dew-proof heater 152c on the heating / cooling chamber 20 side during reheating.

  The above-mentioned Example 1 and Example 2 are an example of the dew prevention heater 152, and can be changed timely, such as arrangement | positioning location, a shape, an electrical arrangement, and the electricity supply method.

  FIG. 9 is a block diagram of the reheating apparatus 1 of the present embodiment. In the present embodiment, a control unit 13 that controls the entire reheating apparatus 1, a cooling device 14 that is driven by an instruction of the control unit 13, a motor 42 that drives a fan 43, an intake fan 71, and a heater 21 that heats it. A solenoid 28 for opening and closing the exhaust duct 25; an operation unit 16 for performing various operations by the operator and transmitting an operation signal to the control unit 13; and heating and cooling for detecting the temperature of air sucked from the heating and cooling unit 124. The room-side temperature sensor 54, the cooling-room-side temperature sensor 63 for detecting the temperature of air sucked from the cooling unit 125, and the dew condensation that generates heat when the temperatures of the heating and cooling unit 124 and the cooling unit 125 become lower than a predetermined level. The heater 152 is electrically connected via a bus or the like. Further, the first cooler 22 and the second cooler 31 are connected to the cooling device 14 via the on-off valve and the like so that the cooling device 14 and the refrigerant circulate.

  In the reheating device 1 of the present embodiment, although the food for food stored in the cart 100 is heated or cooled by the hot air or the cold air supplied from the station 10, for example, the planned number of meals is added Additional heating is possible even when heating is insufficient for a given heating time. Also in this case, the dew proof heater 152 can be operated continuously. Subsequently, the operation of the reheating apparatus 1 will be described in detail using the schematic process diagram of FIG. 10 and the flowchart diagram of FIG.

  As shown in FIG. 10, the reheating device 1 has a reheating step K1 for reheating the food once cooked and an additional heating step K2 for performing additional heating after the reheating step K1. . Further, the reheating apparatus 1 performs the exhaust heat retention step K4 after the reheating step K1, and also performs the exhaust heat retention step K4 after performing the additional heating step K2. In the present embodiment, the reheating step K1 is also a heating / cooling step K3 including the supply of hot air from the heating and cooling chamber 20 and the supply of cold air from the cooling chamber 30. This will be described in detail below with reference to the flowchart of FIG.

  The power of the station 10 is turned on (step S1). Next, the cart 100 is connected to the station 10 (step S2). The food for food provided warm at this time is provided to the heating and cooling unit 124, and the food for food provided as cold is placed on the tray 127 on the cooling unit 125 and stored in the second cart 120, and the tray 127 is stored. The second cart 120 is stored in the first cart 110.

  Then, the operation start button on the operation unit 16 is touched (step S3). The touch signal of the operation start button is received by the control unit 13, and the control unit 13 starts the cooling device 14 to start the cooling operation (step S4). In the heating and cooling chamber 20, the first blower 22 that circulates the refrigerant through the cooling device 14 and the open / close valve cools the air circulating by the first air blower 40 to make it cool and is stored in the heating and cooling unit 124 of the cart 100. Cool the food that has been eaten. Further, in the cooling chamber 30, the air supplied by the second suction unit 70 is cooled by the second cooler 31 in which the refrigerant circulates through the cooling device 14 and the on-off valve to make it cool and stored in the cooling unit 125 of the cart 100. Cool the food that has been eaten.

  At the reheating start time, the control unit 13 starts the heating / cooling operation (step S5). The control unit 13 stops circulation of the refrigerant to the first cooler 22 of the heating and cooling chamber 20 and starts energization of the heater 21 so that the air supplied from the first air blower 40 is changed to hot air, and the cart The food stored in the heating and cooling unit 124 of 100 is heated. On the other hand, in order to prevent the transfer of heat from the heating and cooling unit 124 to the cooling unit 125, the cooling chamber 30 always supplies cold air and keeps the food in the cooling unit 125 constantly cooled.

  When the heating from the heating / cooling chamber 20 has passed for a predetermined time, the control unit 13 stops the energization of the heater 21 and drives the solenoid 28 to open the open / close lid 26 of the exhaust duct 25 to heat the heating / cooling chamber 20 and the heating / cooling An exhaust heat retention step K4 of discharging the hot air of the portion 124 from the exhaust duct 25 to the outside is performed. In the exhaust heat retention step K4, the exhaust duct 25 is opened for a predetermined time to discharge hot air from the heating and cooling chamber 20, and the temperature of the heating and cooling unit 124 is lowered to gradually cool dishes and trays to enable distribution. The heating and cooling operation is performed by controlling the opening and closing of the exhaust duct 25 and the energization of the heater 21 to maintain the heating and cooling unit 124 at a preset temperature keeping temperature. First, the slow cooling operation is started (slow cooling operation: Step S6).

  During reheating, the food is heated by the hot air in a state of being placed in the dishes 126, and the dishes 126 and the tray 127 themselves also have heat during the heating process, so even if the heating is stopped, the food is It keeps being heated by the heat of the dishes 126 and the tray 127 itself. That is, even if the hot air heating in the reheating step K1 ends and the exhaust heat retention step K4 starts, the food continues to be heated by the residual heat of the dishes 126 and the tray 127.

  The heating is completed and the slow cooling operation is started, and when the predetermined time passes, the slow cooling operation is completed, however, the heating due to the residual heat to the food settles down and the heating and cooling unit 124 also falls to the heat retention temperature (step S7). Then, when the worker touches the operation stop button (step S8), the control unit 13 stops the cooling device 14, the heater 21 and the like, and ends the operation (step S9). Further, the worker disconnects the cart 100 from the station 10 (step S10), closes the opening 113 with the open / close door 113a, and delivers the food for food placed on the tray 127.

  By performing the exhaust heat retention step K4, safety for the operator can also be achieved. That is, immediately after the heating by the hot air is completed, the tableware 126 and the tray 127 are in danger of being hot, and furthermore, the worker who opened the open / close door 114a of the cart 100 for the purpose of measuring the temperature of the food has a danger of blowing hot air. By exhausting the hot air to the outside, the heating / cooling chamber 20 and the heating / cooling unit 124 can be gradually cooled, and the open / close door 114 a can be safely opened.

  In the exhaust heat keeping process K4, the control unit 13 monitors the temperatures of the heating and cooling room 20 and the heating and cooling unit 124 by the heating and cooling room side temperature sensor 54, and controls the heater 21 when it falls below the heat keeping temperature set in advance. It is possible to maintain a predetermined heat retention temperature, and when the temperature is too high, the open / close lid 26 of the exhaust duct 25 may be opened. As described above, the control unit 13 is provided with a heat retention operation for controlling the output of the heater 21 of the heating and cooling chamber 20 and the opening and closing of the exhaust duct 25 to keep the heating and cooling portion 124 at the heat retention temperature. It is possible to keep the temperature of the tray 127 constant.

  The exhaust heat retention step K4 is intended to perform gradual cooling of the heating and cooling unit 124, but after the gradual cooling operation is completed, food and dishes are kept until the operation is stopped by keeping the temperature of the heating and cooling unit 124 constant. Since the species can be stored at a temperature suitable for serving, it is possible to provide a meal at a delicious temperature even if the timing of serving is delayed.

  The start of the heating / cooling operation (S5) can be calculated based on the time required to heat the food ("heating with hot air" + "heating by the residual heat of the food"), but may be preset .

  The operation of the dew proof heater 152 will be described in detail with reference to the flow chart of FIG.

<Operation of Embodiment 1>
The power of the station 10 is turned on (step S1). Next, the cart 100 is connected to the station 10 through the housing opening 15 (step S2).

  Then, the operation start button on the operation unit 16 is touched (step S3). The touch signal of the operation start button is received by the control unit 13, and the control unit 13 starts the start of the cooling device 14 and starts the cooling operation (step S4). In the cooling operation, the inner surface of the housing opening 15 is cooled.

  With the start of the cooling operation, the energization control of the anti-dew heater 152 is started. When the cooling chamber side temperature sensor 63 of the cooling chamber 30 becomes lower than a predetermined temperature (for example, 15 ° C.), the top dew proof heater 152a and the frame dew dew heater 152b are energized to warm the surface of the housing opening 15 and project upward. The portion 151a is warmed at a temperature higher than that of the lower protrusion 151b and the left and right protrusions 151c and 151d.

  At the reheating start time, the control unit 13 starts the heating / cooling operation (step S5), heats the heater 21, and the air supplied from the first air blowing unit 40 changes to hot air, and the heating and cooling unit of the cart 100 While heating the food stored in 124, the cooling chamber 30 always supplies cold air and keeps cooling the food in the cooling unit 125 all the time. The dew prevention heater 152 continues to be energized and prevents condensation due to cold air passing through the cooling chamber 30 side of the housing opening 15.

  When the worker touches the operation stop button (step S8), the operation is ended (step S9) and the energization control to the anti-dew heater 152 is stopped.

<Operation of Embodiment 2>
The power of the station 10 is turned on (step S1). Next, the cart 100 is connected to the station 10 through the housing opening 15 (step S2).

  Then, the operation start button on the operation unit 16 is touched (step S3). The touch signal of the operation start button is received by the control unit 13, and the control unit 13 starts the start of the cooling device 14 and starts the cooling operation (step S4). In the cooling operation, the inner surface of the housing opening 15 is cooled.

  With the start of the cooling operation, the energization control of the anti-dew heater 152 is started. When the cooling chamber side temperature sensor 63 of the cooling chamber 30 becomes lower than a predetermined temperature, the heating / cooling chamber side dew-proof heater 152c and the cooling chamber side dew-proof heater 152d are energized, and the heating / cooling chamber 20 side of the casing opening 15 and cooling Both surfaces on the chamber 30 side are warmed.

  At the reheating start time, the control unit 13 starts the heating / cooling operation (step S5), and the air supplied from the first air blowing unit 40 is changed to hot air, and the food stored in the heating and cooling unit 124 of the cart 100 While the cooling chamber 30 always supplies cold air and keeps the food in the cooling unit 125 constantly cooled.

  When the heating / cooling operation is started, the energization of the heating and cooling chamber side dew-proof heater 152c is stopped, while the cooling chamber side dew-proof heater 152d continues the temperature control by the cooling chamber side temperature sensor 63 to continue the housing Condensation due to cold air passing through the cooling chamber 30 side of the opening 15 is prevented. The heating / cooling chamber side dew-proof heater 152 c may be controlled by the heating / cooling chamber side temperature sensor 54 of the heating / cooling chamber 20 independently of the cooling chamber 30 side.

  In the second embodiment, the heating / cooling chamber 20 side of the casing opening 15 is warmed by the passage of the hot air, and the cooling chamber 30 side of the casing opening 15 is warmed by the cooling chamber side dew-proof heater 152 d.

  When the worker touches the operation stop button (step S8), the operation is ended (step S9), and the control of energization to the heating / cooling chamber side dew-proof heater 152c and the cooling chamber side dew-proof heater 152d is stopped.

  The reheating apparatus 1 of the present embodiment is an apparatus capable of performing additional heating when heating is insufficient, and the dew prevention heater 152 can be energized and can be operated continuously even in the additional heating.

<On the rate control of the dew prevention heater 152>
In the anti-dew heater 152 of the present embodiment, control is performed so that the anti-dew heater 152 is energized when the temperature of the cooling chamber side temperature sensor 63 in the cooling chamber 30 becomes equal to or lower than a predetermined temperature. It is also possible to change the energization ratio in accordance with the temperature of 63. For example, as the temperature in the cooling chamber 30 is lower, control is performed to increase the energization ratio. It is possible to generate heat according to the easiness of dew condensation by changing the electrification rate according to the temperature in the cooling chamber 30, which leads to reduction of unnecessary heat load and to perform efficient dew protection operation. Can.

  Also, in the process where the temperature in the cooling chamber 30 decreases at the start of operation, or in the process in which the temperature in the cooling chamber 30 rises, such as at the time of reheating start or defrosting operation, the electrification ratio gradually changes By doing this, unnecessary heat load can be suppressed and the dew protection operation can be performed efficiently.

  Then, as shown in FIG. 12, in order to suppress unnecessary power consumption, it is also possible to control the energization ratio of the anti-dew heater 152 stepwise according to the temperature of the cooling chamber 30 of the station 10. For example, the electrification rate is set to three levels, and is changed according to the temperature of the cooling chamber side temperature sensor 63 in the cooling chamber 30.

  There are various three-step setting methods. As an example, threshold values are set at + 5 ° C and -5 ° C for the preset temperature, and the conduction rate is 50% from the setting value to + 5 ° C, and the conduction rate is 0 at + 5 ° C or more From the set value, the conduction ratio is 75% at -5 ° C, and 100% at -5 ° C or less. Furthermore, in the example according to FIG. 12, in each of the three threshold values, ± 2 ° C. hysteresis is set to stabilize the output, but the output may be stabilized by another method.

  The present invention is not limited to the embodiments described above, and appropriate modifications, improvements, etc. are possible. In addition, the materials, shapes, dimensions, numerical values, forms, numbers, locations, etc. of the respective components in the above-described embodiment are arbitrary and not limited as long as the present invention can be achieved.

  The reheating device according to the present invention is applicable to the field where it is necessary to prevent condensation at the junction of the station and the cart.

DESCRIPTION OF SYMBOLS 1 reheating apparatus 10 station 13 control part 14 cooling device 15 case opening part 16 operation part 17 1st partition plate (partition plate)
Reference Signs List 20 heating / cooling chamber 21 heater 22 first cooler 25 exhaust duct 26 opening / closing lid 28 solenoid 30 cooling chamber 31 second cooler 40 first air blower 42 motor 50 first suction portion 54 heating / cooling chamber side temperature sensor 60 second air blower Part 63 Cooling chamber side temperature sensor 70 Second suction part 100 Cart 110 1st cart 114a Opening and closing door 120 2nd cart 123 2nd partition plate (partition plate)
124 heating / cooling unit 125 cooling unit 126 dishes 127 tray 151 frame-like protrusion 151a upper protrusion 152 anti-dew heater 152a top anti-dew heater 152b frame anti-dew heater 152c heating / cooling chamber side anti-dew heater 152 d cooling chamber side anti-heat heater

Claims (5)

A station including a heating and cooling chamber capable of supplying hot air and cold air and a cooling chamber capable of supplying cold air;
A tray for storing dishes, and a cart connectable to the station;
A control unit that controls supply of hot air and cold air from the station;
Equipped with
The station has a housing opening which is a portion connected to the cart, and the housing opening is provided with a dew-proof heater capable of generating heat.
Reheating device. The reheating device according to claim 1, wherein
The reheating device according to claim 1, wherein the case opening has a frame-like protruding portion protruding like a frame, and the dew-proof heater is embedded in the frame-like protruding portion. The reheating device according to claim 2, wherein
A reheating device provided with a plurality of dew protection heaters. The reheating device according to claim 3, wherein
The reheating apparatus whose heat_generation | fever temperature of the upper surface dew-proof heater provided in the upper protrusion part of the said frame-like protrusion part is higher than the heat_generation | fever temperature of other dew-proof heaters. The reheating device according to claim 3, wherein
A reheating apparatus comprising: a heating and cooling chamber side dew condensation heater disposed corresponding to the heating and cooling chamber; and a cooling chamber side dew condensation heater disposed corresponding to the cooling chamber.

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