JP2023061492A - Cooling storage cabinet - Google Patents

Abstract

To easily and efficiently dissipate heat from a machine chamber.SOLUTION: A cooling storage cabinet 10 comprises a heat insulation box body 11, and a machine chamber 15 arranged on an upper part of the heat insulation box body 11, and of which an upper surface is opened. In the machine chamber 15, a compressor 17 constituting a cooling device 16 for cooling the inside of the heat insulation box body 11, a condenser 18, a condenser fan 19 for air-cooling the condenser 18, and an electric component box 60A housing a control device 60 are arranged. The electric component box 60A comprises an erected surface 60A1 provided on an outflow side of air discharged from the condenser fan 19, and capable of changing a wind direction of the air discharged from the condenser fan 19, upward. The compressor 17 is arranged between the condenser fan 19 and the erected surface 60A1 of the electric component box 60A.SELECTED DRAWING: Figure 7

Description

The present technology relates to cold storage.

Conventionally, in a cold storage, it is known that a machine room is provided above the heat insulating box body that is the main body of the storage, and a compressor and a condenser that constitute a cooling device are housed in the machine room. It is described in Reference 1. The refrigerator described in Patent Document 1 is arranged so that the upper surface of the machine room cover that covers the machine room from above is higher than the upper surface of the heat insulating box body, and the positions of the openings provided on the left and right sides of the upper surface of the machine room are It is arranged so that it is lower than the upper surface of the machine room cover. According to such a configuration, warm air generated by heat generated by the compressor and the condenser is exhausted from the machine room, and low-temperature outside air is taken into the machine room, thereby efficiently dissipating heat. In addition, it is said that by promoting heat radiation from the machine room, it is possible to suppress an excessive temperature rise in the compressor and the condenser, thereby ensuring the reliability of the refrigerator.

Japanese Patent Application Laid-Open No. 2017-203602

However, according to the technique described in Patent Document 1, in order to achieve heat dissipation from the machine room as designed, it is necessary to accurately adjust the positions of the machine room cover and the opening of the machine room. In addition to the compressor and condenser, the machine room generally houses a control device (power supply unit) that controls operation and supplies power. Heat must also be considered. Furthermore, the degree of difficulty in designing heat dissipation increases as the size of the machine room decreases. For example, in the case of a locker-type refrigerated storage that can be locked while cooling and preserving cargo such as food, the front width is often as small as the width of a person's shoulders, and the size of the machine room arranged above tends to be small. If the machine room is small, heat tends to accumulate, and it is difficult to dissipate heat efficiently and easily.

The present technology has been perfected based on the actual situation as described above, and an object of the present technology is to easily and efficiently dissipate heat from a machine room.

A cooling storage according to the present technology includes a heat-insulating box and a machine room that is arranged above the heat-insulating box and has an open upper surface. A constituent compressor, a condenser, a condenser fan for air cooling of the condenser, and an electrical box housing a control device are arranged, and the electrical box is blown out from the condenser fan. The compressor is provided on the outflow side of the air and has an upright surface that can change the wind direction of the air blown out from the condenser fan upward. It is arranged between the standing surface.

In this way, the air blown out from the condenser fan can be directed upward by the erected surface of the electrical equipment box and released to the outside from the opened upper surface of the machine room. Also, when the direction of the air from the condenser fan is changed by the upright surface of the electrical box, the air from the condenser fan is received by the upright surface of the electrical box, so the air that hits the upright surface cooled in Thereby, the control device can be air-cooled. Furthermore, since the compressor is arranged between the condenser fan and the upright surface of the electrical box, the air blown out from the condenser fan also hits the compressor, so that the compressor can be air-cooled. While the compressor is being cooled, the heat (exhaust air) of the compressor is urged by the air blown out from the condenser fan and flows toward the upstanding surface of the electrical equipment box. The exhaust air from the compressor, together with the air blown out from the condenser fan, is discharged to the outside from the open upper surface of the machine room after the wind direction is changed by the erected surface of the electrical box. As a result, it is possible to easily and efficiently dissipate heat from the machine room.

In addition, the heat insulating box is provided with a front opening for taking in and out objects to be stored in the heat insulating box, and the condenser fan, the compressor, and the electrical box are arranged from the front in the front-rear direction. They may be arranged in this order toward the back. In this way, outside air is easily sucked into the condenser fan arranged in front, and the inside of the machine room is easily cooled. The left, right, and rear sides of the refrigerated storage are often covered by walls of the building or other adjacent refrigerated storage, but a space should be secured in the front for the convenience of loading and unloading of stored items. There are many. Therefore, by arranging the condenser fan on the front side, it becomes easier to take in the outside air, and by flowing the air blown out from the condenser fan toward the rear, it becomes easier to cool the inside of the machine room. As a result, it is possible to radiate heat from the machine room more efficiently.

Further, a door for opening and closing the front opening and a locking device for locking the door may be provided. In this way, a locker-type refrigeration storage can be realized, but a general locker often has a front width as small as the width of a person's shoulders. tend to According to this embodiment, even if the machine room is small and heat tends to accumulate, heat can be easily and efficiently dissipated.

A radiator plate is provided on the erected surface of the electrical box. In this way, cooling of the electrical box can be accelerated by the radiator plate.

An object of the present technology is to easily and efficiently dissipate heat from a machine room.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view which shows the usage condition of the locker-type refrigerator which concerns on Embodiment 1. 1 is a perspective view of a locker-type refrigerator according to Embodiment 1 III-III line cross-sectional perspective view of FIG. IV-IV line sectional view of FIG. Perspective view with the left corner panel member removed and the engagement part between the door and the locking device enlarged Enlarged perspective view of the vicinity of the machine room in Fig. 2 Enlarged sectional view of the vicinity of the machine room in Fig. 4 Machine room top view IX-IX line sectional view of FIG.

<Embodiment 1>
A locker-type refrigerator 10 (an example of a cold storage) according to Embodiment 1 will be described with reference to FIGS. 1 to 9. FIG. The reference numerals F, Rr, L, R, U, and D shown in each figure are the front and rear in the front-rear direction of the locker-type refrigerator 10, and the left, right, and vertical in the width direction (horizontal direction) when viewed from the front. Up and down directions (vertical direction) are shown. However, the above direction is merely determined for convenience and should not be construed as limiting. Further, with respect to a plurality of identical members, one member may be denoted by a reference numeral, and the other members may be omitted.

As shown in FIGS. 1 and 2, the locker-type refrigerators 10 are generally in the shape of a vertically long rectangular parallelepiped, and are used by arranging them side by side so that the door 13 faces the front. The locker-type refrigerator 10 is installed, for example, in front of a store or in a shopping mall, and can store packages (an example of stored items) such as food and medicine in a locked state while cooling them. The locker-type refrigerator 10 is used by a service user (for example, a purchaser) to receive packages accommodated by a service provider (for example, a store clerk or a delivery person), but the application is not limited. For example, it may be used by service users to temporarily store packages in cold storage. Also, depending on the application and installation location, only one locker-type refrigerator 10 may be installed instead of a plurality of units. Hereinafter, the service provider and those authorized by it will be referred to as the administrator, and the service provider will simply be referred to as the user.

One of the plurality of locker-type refrigerators 10 installed adjacently has an operation terminal 80 as shown in FIG. The operation terminal 80 is an information terminal provided with at least one of input means 80A such as an operation panel and reading means 80B such as a bar code reader, and known terminals such as tablet terminals and computers are used. The user can unlock or lock the locking device 70 of the door 13, which will be described later, by inputting a password into the operation panel or reading a two-dimensional barcode with a barcode reader. The operation terminal 80 may be installed separately from the locker-type refrigerator 10 and may not be required if the lock device 70 is not an electronic lock. The basic configuration of each unit is common except for the operation terminal 80, and the locker-type refrigerator 10 without the operation terminal 80 shown in FIG. 2 will be described in detail below as an example.

As shown in FIGS. 2 to 4, the locker-type refrigerator 10 roughly includes a heat insulating box body 11 which is a storage body, a plurality of doors 13 for opening and closing the front opening 11S of the heat insulating box body 11, and a door. A plurality of locking devices 70 provided for each door 13 to lock the door 13, a machine room 15 arranged above the heat insulating box 11, and a storage room 12 formed in the heat insulating box 11 are cooled. and a cooling device 16 for

As shown in FIGS. 3 and 4, the heat insulating box 11 has a heat insulating material 11C made of resin foam between an outer box 11A and an inner box 11B, which are made of stainless steel or other metal plates assembled into a box shape. structure. The heat insulating box 11 is composed of heat insulating walls having a ceiling wall portion 41 , a bottom wall portion 42 , a left wall portion 43 , a right wall portion 44 and a rear wall portion 45 . As shown in FIG. 2, the left side wall portion 43 has a protruding portion 43A that protrudes toward the outer side of the storage (the side opposite to the storage chamber 12) with a predetermined width at the central portion in the front-rear direction. A first left corner panel member 72 is provided in front of the projecting portion 43A, and a second left corner panel member 73 is provided behind the projecting portion 43A on the outer side of the left side wall portion 43. As shown in FIG. The right side wall portion 44 has a symmetrical shape with the left side wall portion 43 and has the same basic configuration.

As shown in FIGS. 3 and 4, the ceiling wall portion 41 is provided with an opening, and a ceiling cover 46 having heat insulating properties is fitted into the opening from the machine room 15 side. A cooler chamber 20 is formed below the ceiling lid 46 by extending a cooler duct 23 . Furthermore, an upper panel 51 having a flat surface parallel to the ceiling wall portion 41 is attached below the cooler duct 23 . A left duct 53 is attached to the left side wall portion 43 along the vertical direction. A right duct 54 is attached to the right side wall portion 44 along the vertical direction. A portion surrounded by the upper panel 51, the left side wall portion 43, the left duct 53, the right side wall portion 44, the right duct 54, and the bottom wall portion 42 serves as the storage chamber 12 for storing the objects to be stored. there is

As shown in FIGS. 3 and 4, the storage room 12 occupies most of the internal space (inside) of the heat-insulating box body 11, and is arranged vertically by a plurality of (specifically, four) shelf nets 48. It is divided into a plurality (specifically, four) of storage spaces 12A, 12B, 12C, and 12D. The shelf network 48 is attached to the surfaces of the left side wall portion 43 and the right side wall portion 44 on the side of the storage chamber 12, and can place objects to be stored thereon. More specifically, the shelf net 48 is attached to a portion of the left side wall portion 43 where the left duct 53 is not provided and a portion of the right side wall portion 44 where the right duct 54 is not provided by a shelf bracket 48A. .

A plurality of (specifically, four) horizontal frames 49 are provided on the front surface of the heat insulating box 11, as shown in FIG. The horizontal frame 49 is a solid prismatic member filled with heat insulating material, and extends in the left-right direction from the left side wall portion 43 to the right side wall portion 44 . The front opening 11S is divided by a horizontal frame 49 into sizes corresponding to the storage spaces 12A, 12B, 12C, and 12D.

As shown in FIG. 4, a plurality of (specifically, four) doors 13 are provided so as to open and close each portion of the front opening 11S defined by the horizontal frame 49 . Objects to be stored are taken in and out of the storage spaces 12A, 12B, 12C and 12D through the first front opening 11S1. Each door 13 is a right-opening swinging heat insulating door, and the right side portion of the door 13 is attached to the heat insulating box 11 by a hinge member 13A (FIG. 1). As shown in FIG. 5, each door 13 is provided with a concave pull tab 13B on the front surface of the left portion and an engagement plate 13C that engages with the lock device 70 on the rear surface of the left portion. The engagement plate 13C is a plate-shaped member that protrudes rearward, and has an engagement hole 13C1 formed at the tip thereof into which the movable rod 70B of the lock device 70 is inserted.

The lock device 70 is provided behind the left portion of the door 13, as shown in FIG. The locking device 70 is provided on the outer side of the left side wall portion 43 so as to be accommodated between the left side wall portion 43 and the first left corner panel member 72 . As shown in FIG. 5, the lock device 70 includes a vertically long box-shaped body portion 70A and a movable rod 70B. An insertion hole 70A1 elongated toward the rear is provided in the front surface of the body portion 70A, and the engagement plate 13C of the door 13 is inserted into the insertion hole 70A1. The movable rod 70B is provided at a position where it can be inserted into the engagement hole 13C1 of the engagement plate 13C when the door 13 is closed, and can move vertically. The lock device 70 is an electronic lock, and when an unlocking signal is received from the operation terminal 80, the movable rod 70B moves upward and is pulled out from the engagement hole 13C1 of the door 13, thereby opening the door 13. be able to Further, when a locking signal is received from the operation terminal 80, the movable rod 70B moves downward and is inserted into the engagement hole 13C1 of the door 13, thereby closing the door 13 so that it cannot be opened. However, the lock device 70 may have an auto-lock function that automatically locks when the door 13 is closed in order to prevent forgetting to lock. I don't mind. Further, the locker-type refrigerator 10 may be provided with an unlocking device that allows the manager to unlock all the lock devices 70 collectively.

The machine room 15, as shown in FIGS. 2 to 4 and 6 to 8, is arranged above the heat insulating box body 11, and the front, left, and right sides are respectively a front panel 15A and a left side. It is covered with a side panel 15B and a right side panel 15C. A rod-shaped connecting frame 15D is provided on the rear surface of the machine room 15 to connect the upper end of the left side panel 15B and the upper end of the right side panel 15C. On the rear surface of the machine room 15, a portion below the connection frame 15D forms a rear surface opening 15S1. The upper part of the machine room 15 is not covered with a panel, and almost the entire upper surface is open. The upper surface of the machine room 15 is surrounded by upper end portions of a front panel 15A, a left side panel 15B, a right side panel 15C, and a connecting frame 15D, which serve as opening edges to form an upper surface opening 15S2. The machine room 15 includes a compressor 17, a condenser 18, and a condenser fan 19 for air cooling of the condenser 18, a controller 60 (power supply unit), an operation box 61, and a lock. The device repeater 62 and the like are accommodated.

As shown in FIGS. 3 and 4, the cooling device 16 includes a compressor 17, a condenser 18, an expansion valve (capillary tube), and a cooler (evaporator) 21 in a cooler chamber 20, which will be described later. , are connected in this order by a refrigerant pipe 27 and the refrigerant is circulated to form a known refrigeration circuit (refrigeration cycle). A portion of the refrigerant pipe 27 is covered with a heat insulating covering material 28 . The compressor 17 is an inverter compressor having a variable speed motor in its housing. For the motor, for example, an AC induction motor or a DC brushless motor is used. The compressor 17 uses a motor as a power source to suck and compress refrigerant gas, and discharges a high-temperature, high-pressure refrigerant gas. Compressor 17 generates heat when the motor rotates and drives. Note that the compressor 17 may be a constant-speed compressor having a constant-speed motor.

The condenser 18 cools and liquefies the refrigerant gas compressed by the compressor 17 by blowing air from the condenser fan 19 . The condenser 18, as shown in FIGS. 6 to 8, includes a condenser tube 18A, a large number of fins, and a condenser box 18B housing them. The condenser tube 18A passes through the fins in the condenser box 18B, penetrates the side surface of the condenser box 18B, and is folded back in a U shape. An air filter 18C is attached to the front opening of the condenser box 18B. The air filter 18C prevents foreign matter such as dust from entering the condenser box 18B and adhering to the fins or the like.

The condenser fan 19 is provided behind the condenser box 18B, as shown in FIGS. The circulation fan 19 has a plurality of blades and is rotationally driven by a motor. A front portion of the condenser fan 19 is inserted into a rear opening of the condenser box 18B. When the condenser fan 19 operates, outside air passes through the inside of the condenser box 18B from front to back, cooling the refrigerant inside the condenser tube 18A. A predetermined gap is provided between the condenser 18 and the front panel 15A, so that the outside air flows from above the machine room 15 through the top opening 15S2 and flows between the condenser 18 and the front panel 15A. taken into space. The taken outside air passes through the condenser box 18B, is sucked into the condenser fan 19, and is blown out to the rear side of the condenser fan 19. The locker-type cooling storage 10 is often installed so that the left, right, sides and rear are covered with other locker-type cooling storages 10 installed adjacently or the wall of the building, but the front is opened and closed by the door 13. , and for the convenience of loading and unloading objects to be stored, a space is often secured. By arranging the condenser fan 19 on the front side of the machine room 15, it becomes easier to take in outside air from the upper front.

The cooler 21 reduces the pressure of the refrigerant liquid from the condenser 18 by means of an expansion valve and then evaporates it, thereby cooling the air passing through the cooler 21 with the heat of vaporization. Refrigerant gas from the cooler 21 is fed back to the compressor 17 .

The control device 60 is arranged on the rear side of the machine room 15, as shown in FIGS. The control device 60 includes circuits for controlling the operation of the locker-type refrigerator 10 and for supplying power, etc., which are housed in an electrical equipment box 60A that is a horizontally long box. More specifically, the control device 60 includes an inverter circuit for driving the compressor 17, a fan drive circuit for driving the condenser fan 19 and a circulation fan 24, which will be described later, a control board on which a microcomputer is mounted, and an external circuit. A power supply circuit, a relay (SSR), and an A/D converter for supplying electric power to each part are provided in the electrical equipment box 60A.

The electrical box 60A is erected behind the compressor 17, as shown in FIGS. The electrical equipment box 60A has a horizontally long rectangular parallelepiped shape, and covers most of the rear opening 15S1 of the machine room 15, as shown in FIG. The vertical position of the upper surface of the electrical box 60A is slightly below the upper surface of the connecting frame 15D. A front surface 60A1 (an example of an erected surface) of the electrical box 60A is erected so as to intersect in the front-rear direction. The front surface 60A1 is provided with a plate-like heat sink 60B made of a metal material with excellent heat dissipation.

As shown in FIGS. 4 and 7, the operation box 61 is arranged on the rear side of the front panel 15A, and has a display section 61A, an operation section 61B, and an operation board. The display unit 61A and the operation unit 61B are provided on the front surface of the operation box 61, and the internal temperature of the storage chamber 12 and the like displayed on the display unit 61A are transmitted through an opening provided in a part of the front panel 15A. (Fig. 2). The operation unit 61B is a button for setting and changing the cooling target temperature of the storage chamber 12 and the like. The operation unit 61B can be operated by the administrator with the front panel 15A removed. The display unit 61A and the operation unit 61B are connected to the control board of the control device 60 via the operation board.

As shown in FIGS. 6 and 8, the lock device repeater 62 is arranged on the left side of the right side panel 15C (on the side of the machine room 15), and is connected to lead wiring from each lock device 70. It is said that The lock device repeater 62 is connected for communication with the operation terminal 80 , and an unlocking signal or the like from the operation terminal 80 is transmitted to the lock device 70 via the lock device repeater 62 .

As shown in FIGS. 3 and 4, the cooler duct 23 is provided so as to cover the upper portion (ceiling lid 46) of the heat insulating box 11 from below. A cooler chamber 20 is formed therebetween. Inside the cooler chamber 20, a cooler 21, a circulation fan 24, an indoor temperature sensor, and the like are accommodated. The circulation fan 24 circulates the air in the storage chamber 12 while passing it through the cooler 21 . A left side portion of the cooler duct 23 is formed with a suction port 25 for sucking air from the storage chamber 12 into the cooler chamber 20 , and a circulation fan 24 is provided so as to cover the suction port 25 . A cooler 21 is provided on the right side portion of the cooler duct 23 where the angle of inclination is small. A downwardly inclined tip (right end) of the cooler duct 23 serves as an air outlet 26 for the cooler chamber 20 . The indoor temperature sensor is provided between the circulation fan 24 and the cooler 21, and the temperature is detected when the air in the storage chamber 12 sucked by the circulation fan 24 hits the indoor temperature sensor.

The cooler duct 23 also serves as an internal drain pan, and as shown in FIG. 3, a drain hose 31 is connected to a portion of the right end from below. The drain hose 31 is embedded in the right side wall portion 44 and extends downward, passes from the right side wall portion 44 through the bottom wall portion 42 to the external drain pan 32 provided below the bottom wall portion 42 . It is connected.

As shown in FIGS. 3 and 4, the left duct 53 is provided along the left wall portion 43 of the heat insulation box 11 and extends vertically. As described above, the left side wall portion 43 has the projecting portion 43A, and as a result, the inside of the left side wall portion 43 is recessed with a predetermined width at the central portion in the front-rear direction. The left duct 53 is provided in this recessed portion. The inside of the left duct 53 (the space surrounded by the left wall portion 43 and the left duct 53) sucks in the air in the storage chamber 12, and the suction port 25 of the cooler duct 23 (and thus the cooler 21 in the cooler chamber 20) ) flow path.

The left duct 53 extends downward from the upper panel 51 to near the bottom shelf net 48 . The upper and lower portions of the left duct 53 are open. The upper opening of the left duct 53 communicates with the space between the cooler duct 23 and the upper panel 51 , and the upper end 53 A of the surface of the left duct 53 facing the storage room 12 communicates with the left end of the upper panel 51 . It is connected. A lower opening of the left duct 53 communicates with the lower portion of the storage chamber 12 . Further, the left duct 53 is provided with a large number of inflow holes 53B (an example of ventilation holes) for sucking the air in the storage chamber 12 into the left duct 53 .

As shown in FIG. 3, the right duct 54 is provided along the right side wall portion 44 at a position facing the left duct 53 and extends vertically. The inside of the right side wall portion 44 is recessed with a predetermined width in the central portion in the front-rear direction, similarly to the left side wall portion 43 described above. The left duct 53, like the left duct 53, is provided in this recessed portion. The inside of the right duct 54 (the space surrounded by the right side wall portion 44 and the right duct 54) is for flowing cold air from the cooler 21 blown out from the outlet 26 of the cooler duct 23 toward the storage chamber 12. flow path. An upper opening of the right duct 54 communicates with the outlet 26 of the cooler duct 23 , and a lower opening communicates with the lower portion of the storage chamber 12 . Further, the right duct 54 is provided with a large number of outflow holes 54B (an example of ventilation holes) for blowing out the cool air that has flowed into the right duct 54 to the storage chamber 12 .

Cooling operation is performed by driving the compressor 17, the condenser fan 19, and the circulation fan 24. FIG. In the cooling operation, the air in the storage chamber 12 flows into the left duct 53 from the inflow hole 53B and the lower end 53C of the left duct 53, rises in the left duct 53, and flows out from the upper opening of the left duct 53. The air flowing out of the left duct 53 passes through the space between the cooler duct 23 and the upper panel 51, is sucked into the inlet 25 of the cooler duct 23, and is cooled by heat exchange in the process of passing through the cooler 21. It becomes chilly. Cold air from the cooler 21 is blown out from the blowout port 26, flows into the right duct 54, descends inside the right duct 54, and enters the storage chamber 12 through the outflow hole 54B and the lower end portion 54C of the right duct 54. blown out. The air in the storage chamber 12 is thus cooled. After a predetermined cooling operation time, defrosted water from the cooler 21 and the like generated by the defrosting operation that is appropriately performed is received by the cooler duct 23 and then passed through the drain hose 31 to the outside drain pan 32. drained to

Next, the mechanism of heat dissipation of the machine room 15 having the above configuration will be described. The electrical equipment box 60A is positioned on the outflow side of the air blown out from the condenser fan 19, as shown in FIGS. Therefore, the air blown out from the condenser fan 19 is directed in the directed direction (from the front to the back along the front-rear direction) around the compressor 17 and the refrigerant pipes 27 covered with the heat-insulating coating material 28. , and strikes (is sprayed on) the front surface 60A1 of the electrical box 60A. The air that hits the front surface 60A1 of the electrical box 60A is directed upward along the front surface 60A1 and released to the outside from the open upper surface of the machine room 15 (upper surface opening 15S2). That is, the air in the machine room 15 flows from the front to the rear in the front-rear direction by the condenser fan 19, and then is directed upward by the front surface 60A1 of the electrical box 60A and is discharged to the outside.

Here, when the direction of the air from the condenser fan 19 is changed by the front face 60A1 of the electrical box 60A, the air from the condenser fan 19 is received by the front face 60A1 of the electrical box 60A. As a result, the front surface 60A1 is cooled by the blown air, and the components of the electrical box 60A and the control device 60 housed therein can be air-cooled.

Also, the compressor 17 is arranged between the condenser fan 19 and the front surface 60A1 of the electrical box 60A. As a result, part of the air blown out from the condenser fan 19 also hits the compressor 17, and the compressor 17 can be air-cooled. As shown in FIG. 8 , the compressor 17 is arranged in the machine room 15 toward the left side panel 15</b>B in the left-right direction and behind the left side of the condenser fan 19 . As a result, the air blown out from the condenser fan 19 is not excessively blocked by the compressor 17 and can reach the electrical equipment box 60A. While the compressor 17 is being cooled, the heat (exhaust air) from the compressor 17 is urged by the air blown out from the condenser fan 19 and flows toward the front surface 60A1 of the electrical box 60A. The exhaust air from the compressor 17 and the air blown out from the condenser fan 19 are redirected by the front face A1 of the electrical equipment box 60 and discharged to the outside from the upper opening 15S2 of the machine room 15. FIG.

According to this embodiment, it is possible to easily and efficiently radiate heat from the machine room 15 in this way. Since the upper surface of the machine room 15 is open, the upper surface opening 15S2 is large, and it is not necessary to adjust the positions of the upper surface opening 15S2 and the front surface 60A1 of the electrical box 60A with high accuracy, and alignment is easy. In addition, since the member for changing the airflow direction toward the top opening 15S2 is the front surface 60A1 of the electrical equipment box 60A that houses the control device 60, the electrical equipment box 60A itself is cooled by the blown air along with the airflow direction change. can be done. Furthermore, the front face 60A1 to be cooled is provided with a radiator plate 60B, so that the efficiency of heat radiation can be further enhanced.

Although the size of the locker-type refrigerator 10 is not limited, a common locker often has a front width as small as the width of a person's shoulders, and the size of the machine room 15 of the locker-type refrigerator 10 tends to be small. In addition, since a plurality of locker-type refrigerators 10 are installed adjacently as described above, it is not easy to dissipate heat from the left and right sides. And it becomes difficult to dissipate heat from the left and right sides. According to the present embodiment, even in such a situation where heat tends to accumulate in the machine room 15, the heat can be easily and efficiently dissipated from the machine room 15. FIG. As a result, excessive temperature rise of the equipment (specifically, the compressor 17, the condenser 18, and the control device 60) housed in the machine room 15 is suppressed, which in turn reduces the cooling performance and reduces the reliability of each equipment. It will be possible to ensure sexuality.

<Other embodiments>
The present technology is not limited to the embodiments described by the above description and drawings, and the following embodiments are also included in the technical scope of the present technology.

(1) The electrical equipment box 60 only needs to have an upright surface that can change the direction of the air blown out from the condenser fan 19 upward, and the shape of the electrical equipment box 60 may be any shape other than a horizontally long rectangular parallelepiped shape. do not have.

(2) The number, shape, and arrangement of the inflow holes 53B of the left duct 53 and the outflow holes 54B of the right duct 54 can be appropriately changed according to the size of the storage chamber 12 and the like. Further, an outflow hole may be provided in the upper panel 51 so that the air in the storage chamber 12 may be directed to the suction port 25 even through the outflow hole of the upper panel 51 .

(3) The storage room 12 is not partitioned, and only one door 13 may be provided.

(4) In addition to the front opening 11S, a rear opening connected to the storage chamber 12 may be provided, and a second door for opening and closing the rear opening may be provided. In this way, it becomes possible to put in and take out stored items from both the front and the rear of the storage chamber 12 (so-called pass-through type). According to the pass-through type refrigerator, for example, the front door 13 can be used for opening and closing by the user, and the second door on the rear side can be used for opening and closing by the manager.

(5) The arrangement of each part of the circulation fan 24 and the cooling device 16 is not limited to that shown in the drawing, and other arrangement may be used as long as the cold air circulates in a desired direction.

(6) The cold storage may be a refrigerator other than the locker-type refrigerator 10 that does not include the locking device 70 . Moreover, the cooling temperature is not limited to the refrigerated storage temperature, and may be the frozen storage temperature.

10: Locker type refrigerator (cooling storage), 11: Insulation box, 11S: Front opening, 13: Door, 15: Machine room, 15A: Front panel, 16: Cooling device, 17: Compressor, 18: Condenser, 19: Condenser fan, 60: Control device, 60A: Electrical box, 60A1: Front surface (upright surface), 60B: Radiator plate, 70: Lock device

Claims (4)

a heat insulating box;
a machine room arranged above the heat insulating box body and having an open upper surface;
In the machine room, a compressor constituting a cooling device for cooling the inside of the heat insulation box, a condenser, a condenser fan for air cooling of the condenser, and an electrical box for housing a control device are arranged. and
The electrical box is provided on the outflow side of the air blown out from the condenser fan and has an upright surface that can change the wind direction of the air blown out from the condenser fan upward,
A cooling storage in which the compressor is disposed between the condenser fan and the erected surface of the electrical box. The heat insulating box is provided with a front opening for taking in and out objects to be stored in the heat insulating box,
2. The cooling storage according to claim 1, wherein the condenser fan, the compressor, and the electrical box are arranged in this order from the front to the rear in the front-rear direction. a door for opening and closing the front opening;
and a locking device for locking said door. 4. The cold storage according to any one of claims 1 to 3, wherein a radiator plate is provided on the erected surface of the electrical box.

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