JP2019049398A - Cooling box - Google Patents

Abstract

To dry an interior space in a short time while keeping a door closed.SOLUTION: A cooling box comprises a suction pipe 39 for sucking outside air into an interior space during drying of the interior space, an exhaust pipe 54 for exhausting water vapor in the interior space to an exterior space during drying of the interior space, and a control unit 33 for performing drying operation for energizing a drying heater 26 and operating an interior space fan 28 to dry the interior space when a refrigerating circuit 31 is stopped. An opening of the exhaust pipe 54 on the side of the interior space is arranged on a front side in an air blowing direction of the interior space fan 28 with respect to the interior space fan 28, and an opening of the suction pipe 39 on the side of the interior space is arranged on a rear side in the air blowing direction of the interior space fan 28 with respect to the interior space fan 28.SELECTED DRAWING: Figure 5

Description

  The technology disclosed in the present specification relates to a refrigerator such as a rapid refrigerator that rapidly cools food.

  In a refrigerator such as a rapid refrigerator (so-called blast chiller), the internal fan is rotated at high speed in order to rapidly cool the food. For this reason, moisture or oil contained in food may be scattered on the inner surface of the refrigerator, the evaporator, the internal fan, or the like due to the wind pressure of the internal fan. For this reason, in such a refrigerator, it is common for the user to manually clean the interior with water manually or by an automatic cleaning function.

  By the way, when the inside of the cabinet is washed, if the moisture remaining in the cabinet is left as it is, the inside of the cabinet becomes in a high humidity state, and molds and germs easily propagate. For this reason, it is desirable to dry the interior after washing. As a method for drying the interior, for example, a method is known in which a state in which the door of the cooling compartment is opened a little is opened and the heater is energized and the interior fan is rotated to dry the interior ( For example, see Patent Document 1).

JP 2014-6032 A

However, it is not always desirable to keep the door open in terms of hygiene. In addition, for hygiene, it is desirable to close the door after drying. For this purpose, the user must perform the operation of closing the door after the drying is completed, which causes a problem that the work efficiency is poor. For this reason, it is desirable to dry with the door closed. However, there is a problem that when the door is closed, the interior of the cabinet is not dried or it takes time to dry.
In this specification, the technique which can dry the inside of a warehouse in a short time with a door closed is disclosed.

  The refrigerator disclosed in the present specification includes a refrigerator main body, a refrigeration circuit having an evaporator accommodated in the refrigerator main body, and a refrigerator that circulates air cooled by the evaporator in the refrigerator. An internal fan, a heater for drying the inside of the cabinet, an intake pipe for sucking outside air into the cabinet when drying in the cabinet, an exhaust pipe for exhausting water vapor inside the cabinet to the outside when drying in the cabinet, A cooling operation for operating the refrigeration circuit and the internal fan to cool the interior, and energizing the heater with the refrigeration circuit stopped, and operating the internal fan to dry the interior. A controller that performs a drying operation, and an opening on the inner side of the exhaust pipe is disposed on the front side in the blowing direction of the internal fan with respect to the internal fan, and an opening on the inner side of the intake pipe is The warehouse with respect to the fan in the warehouse It is arranged in the blowing direction after the side of the fan.

When the drying operation is performed, the moisture in the cabinet gradually changes to water vapor due to the rise in the cabinet temperature and the blowing from the cabinet fan. When the moisture changes to water vapor, the volume expands, so if the drying operation is performed with the door closed, the pressure inside the warehouse rises, the water vapor is exhausted from the exhaust pipe, and the air outside the warehouse is exhausted from the intake pipe. It is sucked into the warehouse. Thereby, the inside of the warehouse can be dried with the door closed, and the structure is excellent in terms of hygiene. In addition, since the user does not have to perform the work of closing the door after drying, work efficiency is improved.
However, since the exhaust amount and the intake amount are usually small, it takes time to dry. However, in the above refrigerator, the opening inside the exhaust pipe is disposed on the front side of the internal fan in the blowing direction (that is, the region where the pressure is high), so that the high pressure is used to promote the exhaust of water vapor. Can do. In addition, since the opening on the inner side of the intake pipe is arranged on the rear side in the blowing direction of the internal fan (that is, the region where the pressure is low), the low pressure (that is, the negative pressure) can be used to encourage intake. . As a result, the exhaust amount and the intake amount can be increased, the ventilation in the cabinet is promoted, and the time required for drying can be shortened. Therefore, according to said refrigerator, the inside of a store | warehouse | chamber can be dried in a short time, with a door closed.

  In the drying operation, the control unit may first rotate the internal fan in a direction opposite to the cooling operation, and then rotate the internal fan in the same direction as the cooling operation.

  Generally, the shape of the fan of the internal fan is designed so that air is sucked from a wide range when the internal space is cooled. For this reason, when the internal fan is rotated in the direction opposite to the cooling operation, the air is sent out so as to spread over a wide range. That is, the wind hits a wide area in the warehouse. For this reason, in the wide range in a store | warehouse | chamber, the water droplets adhering to the wall surface etc. in a store | warehouse | chamber are shaken by the wind from a fan in a store | warehouse | chamber, and become easy to unite. When the water droplets are gathered together, they are drained from the drain port by flowing down due to gravity, so that the amount of water in the warehouse can be reduced. For this reason, when the internal fan is first rotated in the direction opposite to the cooling operation, the drying time can be further shortened.

  In addition, a detection unit that detects opening and closing of the door of the refrigerator main body is provided, and the control unit does not start the drying operation when the detection unit detects that the door is open. Also good.

  Since the internal fan is rotated in the drying operation, it is dangerous for the user to start the drying operation with the door open. According to the above refrigerator, when it is detected that the door is open, the drying operation is not started, so that safety can be improved.

  Moreover, the said control part may turn off the power supply of the said refrigerator, when the said drying operation is complete | finished.

  According to said refrigerator, the power consumption of a refrigerator can be suppressed compared with the case where the power supply of a refrigerator is kept on after drying operation is complete | finished.

  In addition, the cooling body is formed with a drain port for draining the washing water that has been cleaned inside the chamber, and a pipe hole through which the intake pipe is passed, and a drain pipe is connected to the lower side of the drain port. The intake pipe may be passed through the pipe hole.

For example, it is possible to branch the intake pipe from a drain pipe connected to a drain outlet for draining the wash water that has cleaned the inside of the warehouse, and also use the drain outlet as an opening inside the warehouse of the intake pipe. However, when it does so, there exists a possibility that the bad smell in a drain pipe may be taken in in a warehouse at the time of drying.
According to the above refrigerator, since the drain pipe and the intake pipe are independent, it is possible to prevent bad odors in the drain pipe from being taken into the warehouse during drying.

Front view of the refrigerator according to Embodiment 1 (with the heat insulating door removed) Sectional drawing of the DD line shown in FIG. Sectional drawing which expands and shows the drain outlet periphery shown in FIG. Sectional view of the CC line shown in FIG. Sectional drawing of the BB line shown in FIG. Front view of the evaporator case from the right side Sectional view of the AA line shown in FIG. Perspective view of drain pipe and intake pipe Disassembled perspective view of drain trap (excluding rubber member) (A) is a side view of the drain trap holder and rubber member, and (B) is a top view. Sectional view of the EE line shown in FIG. Exhaust pipe perspective view Top view of the refrigerator Block diagram showing the electrical configuration of the refrigerator Flow chart of control processing executed by control unit during drying operation

<Embodiment 1>
The first embodiment will be described with reference to FIGS. In the following description, the up-down direction and the left-right direction are based on the up-down direction and the left-right direction shown in FIG. 1, and the front-rear direction is based on the front-rear direction shown in FIG.

(1) Whole structure of refrigerator First, with reference to FIG. 1, the whole structure of the refrigerator 1 which concerns on Embodiment 1 is demonstrated. The refrigerator 1 is a rapid refrigerator (so-called blast chiller) that cools cooked high-temperature food to a low temperature such as + 3 ° C. in a short time, and has a vertically long rectangular shape as a whole.

  The cooler 1 includes a main body 11 (an example of a cooler main body) formed of a heat insulating box having an open front surface, a heat insulating door 12 (see FIG. 4, an example of a door) that opens and closes the opening of the main body 11, and a lower part of the main body 11. The machine room 13 is provided, and is supported by four legs 14 arranged on the lower surface of the machine room 13.

  A heat insulating door 12 (not shown) is connected to the main body 11 by a hinge 15 so as to be able to swing open and close around the left edge when viewed from the front side. The heat insulating door 12 is provided with a magnet packing on the periphery of the back surface. When the heat insulating door 12 is closed, the magnet packing is attracted to the opening edge of the main body 11 and the interior of the main body 11 is sealed.

  An opening / closing sensor 16 (see FIG. 14, an example of a detection unit) (not shown) that detects opening / closing of the heat insulating door 12 is provided at the opening edge of the main body 11. The open / close sensor 16 is, for example, a proximity sensor. The opening / closing sensor 16 is not limited to the proximity sensor as long as it can detect the opening / closing of the heat insulating door 12.

  As shown in FIG. 2 and FIG. 3, a drain port 17 for draining wash water (hereinafter also simply referred to as water) that cleans the inside of the cabinet is provided at the center of the bottom surface of the main body 11. The bottom surface is a tapered surface inclined toward the drain port 17. As shown in FIG. 3, a resin drain cap 18 that plugs the drain port 17 is detachably attached to the drain port 17 from the inside of the warehouse. As will be described in detail later, the drain cap 18 is attached by the user when the interior is cooled, and is removed by the user when the interior is cleaned and dried.

As shown in FIG. 1, a multi-stage tray receiver 19 into which a tray such as a hotel pan is put in and out from the front and a cooling unit 20 for cooling the inside of the body 11 are housed inside the main body 11 (that is, inside the warehouse). ing.
As shown in FIGS. 1 and 4, the multistage tray receiver 19 is formed by bending and welding a metal bar-shaped member.

  As shown in FIGS. 1 and 5, the cooling unit 20 is arranged on the left side of the multi-stage tray receiver 19 in the warehouse, and the left wall in the warehouse is approximately at the center in the height direction and the front-rear direction. A predetermined interval is provided between the rear wall and the heat insulating door 12.

As shown in FIG. 1, the cooling unit 20 includes an evaporator case 21 and a fan case 22.
The evaporator case 21 is open on both the left and right sides. As shown in FIG. 2, an evaporator 23, a defrosting heater 24, a drying heater 26 (an example of a heater), and a not-shown thermistor 25 (see FIG. 14) are housed inside the evaporator case 21. It has been. The evaporator 23 cools the interior by exchanging heat between the refrigerant supplied from a compressor 66 (see FIG. 14) described later and the air in the warehouse, and is arranged in parallel. The cooling fins and the refrigerant pipes folded in multiple so as to penetrate them are provided.

  As shown in FIG. 6, the defrosting heater 24 is attached to the cooling fin of the evaporator 23 while being in contact with the cooling fin from the right side (front side in FIG. 6). The defrosting heater 24 is used to melt the frost by heating the evaporator 23, and is formed by folding back a bar-shaped heating wire in multiple layers. As shown in FIG. 6, the defrosting heater 24 includes a first defrosting heater 24A and a second defrosting heater 24B. The defrosting heater 24 may be configured as a single heater.

  The drying heater 26 is a heater for drying the interior of the refrigerator when the interior is cleaned. The drying heater 26 is in contact with the cooling fin of the evaporator 23 above the defrosting heater 24 from the right side (front side in FIG. 6). It is attached in the state. In other words, the defrosting heater 24 is provided at a position lower than the drying heater 26. The width of the drying heater 26 in the vertical direction is narrower than that of the defrosting heater 24. That is, the heating range of the drying heater 26 is narrower than that of the defrosting heater 24. Therefore, the drying heater 26 consumes less power than the defrosting heater 24.

  The inside thermistor 25 (not shown) is for detecting the inside temperature, and is disposed, for example, on the right side of the defrosting heater 24 inside the evaporator case 21. In addition, the position which distribute | arranges the chamber thermistor 25 is not restricted to this, If it is a position which can detect the chamber temperature appropriately, it can distribute | arrange to arbitrary positions.

As shown in FIG. 1, the fan case 22 is arranged on the right side of the evaporator case 21 and is connected to the evaporator case 21 so as to be able to swing open and close around the rear edge by a hinge (not shown). The left and right sides of the fan case 22 are open and the right side is covered with a metal mesh.
As shown in FIG. 2, two internal fans 28 for circulating the air cooled by the evaporator 23 into the interior of the fan case 22 are arranged side by side. These internal fans 28 rotate in a direction to send air toward the evaporator 23 when the internal space is cooled and when the internal space is dried.

  In the following description, the rotation of the internal fan 28 in the direction of sending wind toward the evaporator 23 is referred to as normal rotation. When the internal fan 28 rotates forward, the air blowing direction of the internal fan 28 is a direction from right to left in FIG. In this case, the pressure is higher on the left side than the internal fan 28 (that is, the front side in the air blowing direction with respect to the internal fan 28), and the pressure is on the right side (ie, the rear side in the air blowing direction with respect to the internal fan 28). Becomes lower.

In the present embodiment, regardless of the position in the vertical direction and the front-rear direction, the left side of the internal fan 28 is the front side in the blowing direction, and the right side of the internal fan 28 is the rear side in the blowing direction. .
In the following description, the rotation of the internal fan 28 by the control unit 33 (FIG. 14) described later is referred to as “operating the internal fan 28”.

  As shown in FIG. 4, a sterilizer 29 for sterilizing the interior of the warehouse is attached so as to be embedded in the rear wall of the interior. The sterilizer 29 has a box-shaped lamp storage case whose inside is opened, and an ultraviolet lamp stored in the lamp storage case, and is covered with a protective cover from the inside. The ultraviolet lamp is turned on after completion of the drying operation described later.

  Moreover, the core temperature sensor 30 (refer FIG. 14) which is not illustrated is also accommodated in the store | warehouse | chamber. The core temperature sensor 30 is inserted into the food when the food is rapidly cooled, and detects the temperature of the food, and is connected to the main body 11 via a lead wire.

As shown in FIG. 2, the machine room 13 includes a part of the refrigeration circuit 31, a drain pipe 32, a control unit 33 (see FIG. 14) described later, a power supply unit (not shown) that supplies power to each part of the refrigerator 1, and the like. Contained.
The refrigeration circuit 31 includes a compressor 66 (see FIG. 14), a condenser, a condenser fan 67 (see FIG. 14), a decompressor (for example, a capillary tube), an evaporator 23, and the like. Has been. The compressor 66, the condenser, the condenser fan 67, and the decompressor are accommodated in the machine room 13, and the evaporator 23 is accommodated in the evaporator case 21 as described above. In addition, the refrigeration circuit 31 may include a dryer or the like.

  As shown in FIGS. 2 and 7, the drain pipe 32 is connected to the drain port 17 from below. The drain pipe 32 is for draining the water flowing into the drain port 17 to the outside of the warehouse, and is formed by connecting a plurality of resin pipes with joints. As shown in FIGS. 7 and 8, the drain pipe 32 extends downward from the drain port 17, and is bent at a later time in an L-shaped first portion 34 (FIG. 7), from the rear end of the first portion 34 to the rear. A second portion 35 (FIGS. 7 and 8) extending while being inclined slightly downward, a third portion 36 (FIG. 8) extending rightward from the rear end of the second portion 35, and a third portion 36 A fourth portion 37 (FIGS. 7 and 8) extending forward from the right end of the fourth portion 37 and a fifth portion 38 (FIGS. 7 and 8) extending downward from the front end of the fourth portion 37. Have.

  As shown in FIGS. 7 and 8, an intake pipe 39 branches from the third portion 36 of the drain pipe 32. The description of the intake pipe 39 will be described later.

  As shown in FIGS. 2 and 7, a vertical drain trap 40 is provided in the middle of the fifth portion 38. As shown in FIG. 9, the drain trap 40 has a cylindrical portion 41 provided in the middle of the fifth portion 38. A circular opening 43 into which a holder 42 for holding the rubber member 47 shown in FIGS. 10A and 10B is inserted is formed in the outer peripheral wall of the cylindrical portion 41. The holder 42 has a flat plate portion 45 in which a circular opening 44 for holding the rubber member 47 is formed, and a circular lid portion 46 that closes the opening 43 of the cylindrical portion 41.

  As shown in FIGS. 10A and 10B, the rubber member 47 has a cylindrical portion 48 formed in a cylindrical shape, and an opening / closing portion formed so as to narrow the cylindrical portion 48 from both sides downward. 49. When water is collected in the rubber member 47, the opening and closing part 49 opens due to the weight of the water, and the accumulated water is drained. When the drainage is not accumulated, the opening and closing part 49 is closed to invade pests and the like. It is prevented.

As shown in FIG. 7, a drain hose 50 is connected to the lower end of the fifth portion 38 of the drainage pipe 32 to drain the drainage into an indoor drainage groove or the like. The drain hose 50 is drawn out from the lower end portion of the back surface 60 of the refrigerator 1 to the outside of the refrigerator.
As shown in FIGS. 5 and 7, a plate-like air guide 51 for directing wind (exhaust heat) from the condenser fan 67 that cools the condenser upward is provided at the lower end portion of the back surface 60 of the refrigerator 1. It is attached so as to protrude rearward and upward. As shown in FIG. 5, the air guide 51 is provided over the entire width of the back surface 60 of the refrigerator 1, and a drain hose 50 is passed through an opening formed in the air guide 51.

  As described above, since the air guide 51 protrudes from the back surface 60 of the cooler 1, when the back surface 60 of the cooler 1 is installed facing the indoor wall, the air guide 51 is provided between the back surface 60 and the indoor wall. It is necessary to secure space for That is, the external dimensions of the refrigerator 1 on the back surface 60 side are defined by the air guide 51.

  As shown in FIG. 1, an operation panel 53 is provided at an upper position in front of the machine room 13. The operation panel 53 includes an operation unit having various operation buttons and a display unit for displaying various information. The user can select the operation mode (rapid cooling operation / drying operation, etc.) of the refrigerator 1, instruct the operation start, and set the internal temperature by operating the operation buttons. The display section displays the current operation mode, the internal temperature, various messages, and the like.

(2) Exhaust Pipe and Intake Pipe As shown in FIG. 11, an exhaust pipe 54 is provided in the upper part of the cabinet so as to penetrate the rear wall. Further, as shown in FIG. 7, an intake pipe 39 branches from the third portion 36 of the drain pipe 32. These pipes are provided in order to dry the interior with the heat insulation door 12 closed after the interior is cleaned. Specifically, the exhaust pipe 54 is for exhausting water vapor in the storage during the drying operation, and the intake pipe 39 is for sucking outside air into the storage during the drying operation.

As shown in FIG. 12, the exhaust pipe 54 is formed in an L shape having a horizontal portion 55 and a vertical portion 56 extending upward from the rear end of the horizontal portion 55, and the exhaust pipe 54 is formed on the vertical portion 56. An electromagnetic valve 57 that opens and closes is provided.
As shown in FIGS. 5 and 11, the horizontal portion 55 passes through the rear wall of the main body 11, and the end on the inner side is inserted into the evaporator case 21 of the cooling unit 20. Since the evaporator case 21 is located on the left side of the fan case 22, the opening inside the horizontal portion 55 inserted in the evaporator case 21 has a high pressure when the internal fan 28 rotates forward. Located in the area.

  As shown in FIGS. 11 and 13, the portion of the exhaust pipe 54 that protrudes outside the box and the electromagnetic valve 57 are surrounded by a metal exhaust pipe cover 58 formed in a box shape on the top, bottom, right, left, and rear sides. That is, at least the lower side of the portion of the exhaust pipe 54 that is outside the storage is covered with the exhaust pipe cover 58. As shown in FIG. 13, an opening 59 for releasing water vapor exhausted from the exhaust pipe 54 is formed in the ceiling wall of the exhaust pipe cover 58, and the opening 59 is covered with a metal mesh. FIG. 7 shows a state where the exhaust pipe cover 58 is removed.

  Here, the reason why the exhaust pipe cover 58 is provided will be described. The internal fan 28, the internal thermistor 25, the core temperature sensor 30, and the like disposed in the storage are connected to the control unit 33 accommodated in the machine room 13 via electric wires. These electric wires are drawn out from the inside of the refrigerator to the back surface 60 side of the refrigerator 1, and then are wired along the back surface 60 below the exhaust pipe 54 and drawn into the machine room 13. For this reason, when the exhaust pipe cover 58 is not provided, there is a possibility that water droplets condensed on the exhaust pipe 54 may drop on the electric wires. Alternatively, there is a possibility that dust in the cabinet blown out from the exhaust pipe 54 may accumulate on the electric wire. When the exhaust pipe cover 58 is provided, it is possible to prevent such water droplets from falling on the electric wire and dust from accumulating on the electric wire.

  As shown in FIG. 13, the exhaust pipe cover 58 is a virtual plane 61 parallel to the back surface 60 of the refrigerator 1, and the virtual plane 61 and the back surface contacting the air guide 51 from the side opposite to the back surface 60 (that is, the rear side). 60. That is, the exhaust pipe cover 58 is within the outer dimensions defined by the air guide 51.

As shown in FIGS. 7 and 8, the intake pipe 39 extends from the third portion 36 of the drain pipe 32 obliquely to the upper right, and extends upward from the upper end of the first portion 62. A second portion 63. As shown in FIG. 7, a pipe hole (not shown) through which the intake pipe 39 is passed is formed in the machine chamber 13, and the first portion 62 extends through the pipe hole to the outside of the machine chamber 13. . A portion of the intake pipe 39 is shared with the drain pipe 32, and the drain port 17 provided on the bottom surface of the interior also serves as an opening inside the interior of the intake pipe 39.
Here, as shown in FIG. 2, since the drain outlet 17 in the warehouse (that is, the opening inside the intake pipe 39) is located on the right side of the internal fan 28, the opening inside the warehouse of the intake pipe 39. Is located in a region where the pressure decreases when the internal fan 28 rotates forward.

  The inner diameters of the drain pipe 32 and the intake pipe 39 are larger than the inner diameter of the exhaust pipe 54. The reason for this is that if the inner diameter of the drain pipe 32 and the intake pipe 39 is smaller than the inner diameter of the exhaust pipe 54, the drain pipe 32 and the intake pipe 39 become a bottleneck during the drying operation described later, and the water vapor in the warehouse is efficiently used. This is because there is a possibility that the exhaust cannot be performed well.

  As shown in FIGS. 7 and 13, the portion of the intake pipe 39 that protrudes outside the box is also covered with a metal intake pipe cover 64 that is formed in a box shape. As shown in FIG. 13, an opening 65 is formed in the ceiling wall of the intake pipe cover 64, and the opening 65 is covered with a metal mesh. The intake pipe cover 64 is also accommodated between the back surface 60 of the refrigerator 1 and the virtual plane 61 described above.

(3) Electrical configuration of the refrigerator As shown in FIG. 14, the refrigerator 1 includes a control unit 33. The control unit 33 includes a CPU 33A, a ROM 33B, a RAM 33C, and the like. The compressor 66, the condenser fan 67, the internal fan 28, the defrosting heater 24, the drying heater 26, the electromagnetic valve 57 of the exhaust pipe 54, the internal The thermistor 25, the core temperature sensor 30, the open / close sensor 16, the operation panel 53, and the like are connected. The control unit 33 (more specifically, the CPU) controls each unit of the refrigerator 1 by executing a control program stored in the ROM.

  The control unit 33 may include an FPGA (Field Programmable Gate Array), an ASIC (Application Specific Integrated Circuit), or the like instead of the CPU 33A or in addition to the CPU 33A.

(4) Operation mode of the refrigerator The operation mode of the refrigerator 1 includes a rapid cooling operation (an example of a cooling operation), a defrosting operation, and a drying operation. Hereinafter, each operation mode will be described.

(4-1) Rapid cooling operation Rapid cooling operation is an operation mode in which cooked hot food is rapidly cooled. The rapid cooling operation is started when the user holds the tray containing the food on the multistage tray receiver 19 and then operates the operation unit of the operation panel 53 to instruct the start of the rapid cooling operation. Here, when instructing the start of the rapid cooling operation, the user instructs the start after attaching the drain cap 18 to the drain 17.

In the rapid cooling operation, the control unit 33 controls the refrigeration circuit 31, the internal fan 28, the electromagnetic valve 57 of the exhaust pipe 54, the defrosting heater 24, and the drying heater 26 as follows.
Refrigeration circuit 31 = operation Internal fan 28 = operation (forward rotation)
Solenoid valve 57 of the exhaust pipe 54 = Closed Defrosting heater 24 = Not energized Drying heater 26 = Not energized

  As indicated by the arrow in FIG. 5, in the rapid cooling operation, the internal fan 28 rotates to suck the air in the refrigerator into the cooling unit 20, where it is cooled by the evaporator 23, and the rear side of the cooling unit 20 ( It is blown out from the left side in FIG. The blown air hits the left wall of the main body 11, is divided into a front side and a rear side, wraps around the right side, and then is sucked into the cooling unit 20 through a space between the trays. As a result, cold air circulates in the cabinet and the food is rapidly cooled. It is also possible to perform the air blowing operation by rotating only the internal fan 28.

  When the rapid cooling operation is started, the control unit 33 monitors the temperature of the food by the core temperature sensor 30, and ends the rapid cooling operation when the food is cooled to a predetermined temperature. The condition for terminating the rapid cooling operation is not limited to this. For example, the rapid cooling operation may be terminated when a certain time has elapsed since the rapid cooling operation was started. In addition, after the rapid cooling operation is completed, the operation may be shifted to the cold operation.

(4-2) Defrosting operation The defrosting operation is an operation mode in which the evaporator 23 is defrosted. The defrosting operation is started when the user operates the operation panel 53 to instruct the start of the defrosting operation while the operation of the refrigerator 1 is stopped (in other words, on standby).

In the defrosting operation, the control unit 33 controls the refrigeration circuit 31, the internal fan 28, the electromagnetic valve 57 of the exhaust pipe 54, the defrosting heater 24, and the drying heater 26 as follows.
Refrigeration circuit 31 = stop Internal fan 28 = running (forward rotation)
Solenoid valve 57 of the exhaust pipe 54 = Closed Defrosting heater 24 = Energized Drying heater 26 = Not energized

  In the defrosting operation, since the refrigeration circuit 31 is stopped and the defrosting heater 24 is energized, the internal temperature rises. When the defrosting operation is started, the controller 33 monitors the internal temperature by the internal thermistor 25, and ends the defrosting operation when the internal temperature rises to a predetermined defrosting end temperature. In addition, the conditions which complete | finish a defrost operation are not restricted to this, It can determine suitably.

(4-3) Drying operation Drying operation is an operation mode in which the interior is dried when the interior is washed. The drying operation is started when the user operates the operation panel 53 to instruct the start of the drying operation after the interior is cleaned.
Here, when the user cleans the interior of the cabinet, the drain cap 18 is removed to drain the washed water, and when the interior is dried, the drain cap 18 is left removed for ventilation. And Further, when instructing the start of the drying operation, the user instructs the start after closing the heat insulating door 12.

In the drying operation, the control unit 33 controls the refrigeration circuit 31, the internal fan 28, the electromagnetic valve 57 of the exhaust pipe 54, the defrosting heater 24, and the drying heater 26 as follows.
Refrigeration circuit 31 = stop Internal fan 28 = running (forward rotation)
Solenoid valve 57 of the exhaust pipe 54 = opening defrosting heater 24 = not energized drying heater 26 = energized

  When the drying heater 26 is energized to rotate the internal fan 28 in the forward direction, warm air is sent into the internal chamber, the internal temperature rises, and the internal moisture gradually changes to water vapor. When the moisture changes to water vapor, the volume expands. Therefore, when the drying operation is performed with the heat insulating door 12 closed, the pressure in the warehouse rises, the water vapor is exhausted from the exhaust pipe 54, and the water is exhausted from the intake pipe 39. Outside air is sucked in. Thereby, the inside of the warehouse can be dried with the heat insulating door 12 closed.

  However, since the exhaust amount and the intake amount are usually small, it takes time to dry. However, as described above, in the refrigerator 1, the opening inside the exhaust pipe 54 is arranged on the front side in the blowing direction of the internal fan 28 (that is, the region where the pressure is high), and the high pressure promotes the exhaust of water vapor. It is. In addition, since the opening on the inner side of the intake pipe 39 (that is, the drain port 17) is arranged on the rear side in the blowing direction of the internal fan 28 (that is, the region where the pressure is low), the low pressure (that is, the negative pressure) causes intake Is prompted. As a result, the exhaust amount and the intake amount can be increased, the ventilation in the cabinet is promoted, and the time required for drying can be shortened.

Next, a control process executed by the control unit 33 during the drying operation will be described with reference to FIG. This process is started when the user operates the operation panel 53 to instruct the start of the drying operation.
In S101, the control unit 33 detects whether or not the heat insulating door 12 is closed by the open / close sensor 16, and if it is closed, the process proceeds to S102, and if it is open, the process ends without starting the drying operation. . The reason why the drying operation is not started when the heat insulating door 12 is open is that the internal fan 28 is rotated during the drying operation, and therefore it is dangerous for the user to start the drying operation with the heat insulating door 12 open.

  In addition, when the heat insulation door 12 is open, the control part 33 may perform the process which prompts a user to close the heat insulation door 12. FIG. The process for prompting the user to close the heat insulation door 12 may be performed by, for example, displaying a message prompting the user to close the heat insulation door 12 on the display unit of the operation panel 53 or by generating a predetermined notification sound. Alternatively, it may be performed by turning on or blinking a light source such as an LED.

In S102, the control unit 33 starts the drying operation.
In S103, the controller 33 detects the internal temperature by the internal thermistor 25, and proceeds to S104 if the internal temperature is equal to or higher than the predetermined temperature, and proceeds to S105 if the internal temperature is lower than the predetermined temperature. For example, if the drying operation is performed in a state where the drain cap 18 has been forgotten to be removed, the outside temperature is not sucked into the inside, and the inside temperature rises excessively, and may exceed the predetermined temperature described above. In that case, it is determined in S103 that the temperature is equal to or higher than the predetermined temperature.

  In S104, the control unit 33 executes a process for lowering the internal temperature. Specifically, for example, the control unit 33 notifies the user that the drain cap 18 is still attached. Notification to the user can be performed by an appropriate method. For example, it may be performed by displaying a message prompting the user to remove the drain cap 18 on the display unit, may be performed by emitting a predetermined notification sound, or a light source such as an LED is turned on (or flashes). You may do by letting.

The control unit 33 ends the process when the process for lowering the internal temperature is executed, and the user again instructs the start of the drying operation after removing the drain cap 18.
The process for lowering the internal temperature is not limited to the process of notifying the user that the drain cap 18 is still attached, and may be a process of interrupting the drying operation, for example. When the drying operation is interrupted, the drying operation may be resumed after the internal temperature drops to some extent.

In S105, the control unit 33 determines whether or not a certain time has elapsed since the start of the drying operation. If the certain time has elapsed, the process proceeds to S106, and if not, the process returns to S103 and repeats the process. . Note that this fixed time can be set appropriately by the user.
In S106, the control unit 33 ends the drying operation, controls the electromagnetic valve 57, and closes the exhaust pipe 54.
In S107, the control unit 33 turns on the refrigerator 1 after turning on the ultraviolet lamp for a certain time for sterilization.

(5) Effect of Embodiment According to the cooler 1 according to the first embodiment described above, the opening on the inner side of the exhaust pipe 54 is arranged on the front side in the blowing direction of the inner fan 28 (that is, the region where the pressure is high). Therefore, exhaust of water vapor can be promoted using the high pressure. Moreover, since the opening inside the store | warehouse | chamber of the intake pipe 39 is distribute | arranged to the ventilation direction back side (namely, area | region where pressure is low) of the fan 28 in a store | warehouse | chamber, it uses the low pressure (namely, negative pressure) to encourage intake. Can do. As a result, the exhaust amount and the intake amount can be increased, the ventilation in the cabinet is promoted, and the time required for drying can be shortened. Therefore, according to the refrigerator 1, the inside of the refrigerator can be dried in a short time with the heat insulating door closed.

  Moreover, according to the refrigerator 1, since the inside of a store | warehouse | chamber can be dried with the heat insulation door 12 closed, it is not necessary for the user to close the heat insulation door 12 after the drying is completed. The process until turning off can be performed by automatic operation.

  Furthermore, according to the refrigerator 1, since it is detected that the heat insulation door 12 is opened by the open / close sensor 16, the drying operation is not started, so that the safety of the user can be improved.

  Furthermore, according to the refrigerator 1, since the power source of the refrigerator 1 is turned off when the drying operation is completed, the refrigerator 1 is compared with the case where the power source of the refrigerator 1 is kept on after the drying operation is completed. Power consumption can be suppressed. Moreover, since the user does not have to perform an operation of turning off the power after drying, work efficiency is improved.

<Embodiment 2>
Next, Embodiment 2 will be described.
When starting the drying operation, the control unit 33 according to the second embodiment first rotates the internal fan 28 in a direction opposite to the rapid cooling operation (that is, reverse rotation), and then causes the internal fan 28 to perform the rapid cooling operation. Rotate in the same direction (ie, forward rotation).

  The internal fan 28 is designed in a fan shape so that air is sucked from a wide range during rapid cooling. For this reason, when the internal fan 28 is reversely rotated, the air is sent out so as to spread over a wide range. That is, the wind hits a wide area in the warehouse. For this reason, in a wide range in the warehouse, the water droplets adhering to the wall surface in the warehouse are swayed by the wind from the internal fan 28 and easily gather together. When the water droplets are gathered together, they are drained from the drain port 17 by flowing down due to gravity, so that the amount of water in the warehouse can be reduced. For this reason, if the internal fan 28 is first rotated in the reverse direction, the drying time can be further shortened.

The time for reverse rotation of the internal fan 28 may be 1 minute, 10 minutes, or 1 hour. The time for reverse rotation of the internal fan 28 can be determined as appropriate.
<Embodiment 3>
Next, Embodiment 3 will be described.
There is a possibility that the drainage pipe 32 collects washed wastewater and dust. For this reason, if the drain port 17 is shared as an opening on the inside of the intake pipe 39, there is a possibility that bad odors generated by the drainage or dust during the drying operation may be taken into the chamber.

  For this reason, the drain pipe 32 and the intake pipe 39 may be made independent. Specifically, for example, a pipe hole for passing the intake pipe 39 is formed in any of the front, rear, left and right side walls, the ceiling wall, and the bottom wall of the main body 11, and the intake pipe 39 independent of the drain pipe 32 is formed in the pipe hole. You may pass through. If it does in this way, it can suppress that the malodor in the drainage pipe 32 will be taken in in the store | warehouse | chamber at the time of drying.

  In this case as well, the opening on the inner side of the intake pipe 39 is arranged on the rear side in the blowing direction of the internal fan 28. In that case, an intake pipe cap that plugs the opening of the intake pipe 39 or a valve such as a solenoid that opens and closes the intake pipe 39 is provided, and the intake pipe 39 is opened during the drying operation. It is assumed that a cap 18 is attached.

<Other embodiments>
The technology disclosed in the present specification 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 disclosed by the present specification.

  (1) In the above embodiment, the case where the drying operation is not started when the heat insulating door 12 is open has been described as an example, but the drying operation is started even when the heat insulating door 12 is open. Also good.

  (2) In the above embodiment, the case where the power source of the refrigerator 1 is turned off when the drying operation is finished is described as an example. However, the power source of the refrigerator 1 may be kept on even after the drying operation is finished.

  (3) In the above embodiment, in the drying operation, whether or not the drain cap 18 is attached is indirectly determined by determining whether the internal temperature is equal to or higher than a predetermined temperature. Explained in the example. On the other hand, a sensor for detecting whether or not the drain cap 18 is attached may be provided, and the determination may be made using the sensor.

DESCRIPTION OF SYMBOLS 1 ... Cooling box, 11 ... Main body (an example of a cooling body main body), 12 ... Thermal insulation door (an example of a door), 16 ... Opening / closing sensor (an example of a detection part), 23 ... Evaporator, 26 ... Heater for drying (Example), 28 ... inside fan, 31 ... refrigeration circuit, 32 ... drain pipe, 33 ... control section, 39 ... intake pipe, 54 ... exhaust pipe

Claims (5)

The refrigerator body,
A refrigeration circuit having an evaporator housed in the refrigerator body;
An internal fan that circulates the air cooled by the evaporator into the internal compartment,
A heater that dries the inside of the cabinet;
An intake pipe for sucking outside air into the cabinet when drying in the cabinet;
An exhaust pipe for exhausting water vapor inside the cabinet to the outside during drying in the cabinet;
A cooling operation for operating the refrigeration circuit and the internal fan to cool the interior, and energizing the heater with the refrigeration circuit stopped, and operating the internal fan to dry the interior. A control unit for performing a drying operation;
With
The inside opening of the exhaust pipe is disposed on the front side of the internal fan with respect to the internal fan, and the internal opening of the intake pipe is the internal fan with respect to the internal fan. Refrigerator placed on the rear side in the air blowing direction. The refrigerator according to claim 1,
In the drying operation, the control unit first rotates the internal fan in a direction opposite to the cooling operation, and then rotates the internal fan in the same direction as the cooling operation. The refrigerator according to claim 1 or 2,
A detection unit that detects opening and closing of the door of the cooling body,
The said control part is a refrigerator which does not start the said drying operation, when it is detected by the said detection part that the said door is open. It is a refrigerator as described in any one of Claims 1 thru | or 3, Comprising:
The said control part is a refrigerator which turns off the power supply of the said refrigerator when the said drying operation is complete | finished. It is a refrigerator as described in any one of Claims 1 thru | or 4, Comprising:
The cooling body is formed with a drain port for draining the cleaning water that has been cleaned inside the chamber, and a pipe hole through which the intake pipe is passed,
A cooling chamber in which a drain pipe is connected to the lower side of the drain port, and the intake pipe is passed through the pipe hole.

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