JP3005401B2 - Refrigerator or prefab refrigerator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling apparatus, such as a prefabricated refrigerator used as a rapid cooling box, for cooling a storage room by installing a cooling unit in a storage room constituted by heat insulating walls. Things.

[0002]

2. Description of the Related Art Conventionally, this kind of cooling apparatus is disclosed in Japanese Patent Publication No. 58-48825 (F25D17 / 06) and Japanese Patent Application No. 4-295856 previously filed by the applicant.
A cooler and a blower are mounted in the heat insulating box, and the cool air cooled by the cooler is forcibly circulated into the storage room by the blower to cool.

On the other hand, in a large-sized cooling device such as a prefabricated refrigerator, a cooling unit is installed in a storage room constructed by assembling a prefabricated panel as a heat insulating wall, and is separately provided in a cooler provided in the cooling unit. A refrigerant is supplied from the condensing unit, and the cool air cooled by the cooler is forcibly circulated into the storage chamber by a blower provided in the cooling unit to cool the cool air.

[0004]

However, especially in a prefabricated refrigerator of a freezing specification used as a rapid cooling box for food, a cooler and a blower become large in size.
Accordingly, the cooling unit also becomes large. Such a large cooling unit is heavy, and handling during transport and installation becomes extremely complicated, and after the prefabricated panel is assembled, it cannot be carried into the storage room from the entrance,
Before assembling the prefabricated panel, it must be installed and placed on the panel that will be the floor. Therefore, restrictions on the assembly procedure are extremely large and workability is poor.

[0005] Further, the location and direction of the cooling unit in the storage room of the prefabricated refrigerator differ depending on the assembly shape of the prefabricated panel, the arrangement of the inlet, and the like. Therefore, the arrangement of the cooler and the blower inside the cooling unit is fixed. In some conventional devices, it is sometimes difficult to form an effective cold air circulation.

Furthermore, since the piping to the cooler and the wiring to the blower are conventionally provided on the back side of the cooling unit, the piping to the condensation unit and other wiring work must be performed on the back side of the cooling unit. The piping and wiring work becomes extremely complicated, and there is also a problem that the prefabricated panel is damaged by the piping.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional technical problem, and provides a cooling device in which the workability of installing a cooling unit in a storage room constituted by heat insulating walls is improved. The purpose is to:

[0008]

The refrigeration apparatus (prefabricated refrigerator) 1 according to the first aspect of the present invention is provided with a refrigeration unit 2 installed in a storage room 4 composed of heat insulating walls (prefabricated panels) 3. The cooling unit 2 supplies cool air into the storage chamber 4 for cooling. The cooling unit 2 is constituted by a cooler-side unit 11 and a blower-side unit 12 which are separably connected to each other. the cooler 14 is a cooler-side unit 11, the blower side unit 12 attached to the blower 32, respectively, the cooler side unit
11 is connected to the condensing unit by piping,
The cool air that has exchanged heat with the cooling air 4 is forcibly circulated into the storage room 4 by the blower 32.

Further , the prefabricated refrigerator 1 according to the second aspect of the present invention.
Has a storage room 4 inside with a heat insulating wall (prefabricated panel) 3.
And the cooling unit 2 is installed in the storage room 4.
By supplying cool air from the cooling unit 2 into the storage room 4
In which the cooling units 2 are separated from each other.
Cooler side unit 11 and blower side unit connected to
12 and inside the cooler-side unit 11
A cooler 14 and a blower in the blower side unit 12.
32 are attached, and the condenser unit 11 condenses
Heat exchange with cooler 14 while connected to unit
The cooled air is forcibly circulated into the storage room 4 by the blower 32.
The configuration is as follows.

Further, the cooling device or the pre-cooling device according to the third aspect of the present invention.
The hub refrigerator 1 is provided in the cooling unit 2 in each of the above inventions.
Between the cooler 14 and the blower 32
A space S for performing a line is configured.

The cooling device according to the first or second aspect of the present invention or
According to the prefabricated refrigerator 1, the cooling unit 2 installed in the storage room 4 is constituted by a cooler-side unit 11 and a blower-side unit 12 which are connected to each other in a separable manner,
The cooler side unit 11 was connected to the condenser unit by piping.
In this state, the cool air exchanged with the cooler 14 provided in the cooler-side unit 11 is forcibly circulated into the storage chamber 4 by the blower 32 provided in the blower-side unit 12, so that the cool air is connected to the condensing unit. When transporting or installing the cooling unit 2 before the cooling, the cooling unit 11
And the blower-side unit 12 can be handled separately. Accordingly, since the weight and size of each unit can be reduced as compared with the conventional cooling unit 2, handling at the time of transportation and installation is easy, and especially in a prefabricated refrigerator, it is possible to separately carry the unit from the entrance. Therefore, it is possible to assemble the prefabricated panel as the heat insulating wall and then store the prefabricated panel in the storage room 4, so that the restriction on the assembly is significantly reduced.

In particular, since the cooler-side unit 11 and the blower-side unit 12 of the cooling unit 2 can be separated,
Cooler-side unit 1 according to the position installed in storage room 4
1 and the arrangement of the blower-side unit 12 can be changed, whereby an efficient cool air circulation can be formed in the storage room 4.

The cooling device or the pre-cooling device according to the third aspect of the present invention.
According to the hub refrigerator 1, in addition to this, it is installed in the storage room 4.
Between the cooler 14 in the cooling unit 2 and the blower 32
A space S for piping or wiring is constructed in
It is possible to perform piping and wiring between
On the back side of the cooling unit 2 as before.
If the piping and wiring work becomes extremely easy compared to when
In both cases, there is a risk of damaging the insulation wall (prefab panel) 3
Less. In particular, between the cooler 14 and the blower 32
Because of the space S, they are separated from each other.
A short cycle of cold air between them is prevented.
It is.

Further, piping and wiring work of the cooling unit 2
Alternatively, when performing maintenance work, the cooling unit 1
1 and the fan-side unit 12 are separated,
By drawing Knitting bets 12 forward, very easily
You will be able to do those tasks.

[0015]

Next, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing the inside of a prefabricated refrigerator 1 of a freezing specification as an embodiment of a cooling device, FIG. 2 is a front view of a cooling unit 2 of the present invention, FIG. 3 is a plan view of the cooling unit 2, and FIG. FIG. 3 is a perspective view of a unit 2. The prefabricated refrigerator 1 is used as a quick-cooling refrigerator for rapidly freezing food, and a plurality of prefabricated panels 3... Serving as insulating walls are combined to form front and rear left and right wall surfaces, a top surface, and a floor surface. Storage room 4 inside them
Is configured. The prefabricated refrigerator 3 has a prefabricated panel 3 on which a cart 6 loaded with food and an entrance 7 for workers to enter and leave the storage room 4 are formed. The entrance 7 is closed by a heat insulating door (not shown).

A cooling unit 2 is installed on the floor inside the storage room 4 of the prefabricated refrigerator 1. The cooling unit 2 includes a cooler-side unit 11 and a blower-side unit 12 which are separate from each other, as shown in FIGS. The cooler-side unit 11 includes a vertically long cooler-side case 13 and a plate-fin type cooler 14 installed vertically in the cooler-side case 13. A suction port 16 is formed on the front surface of the cooler side case 13, and a front plate 17 is attached to one side of the front surface alongside the suction port 16.

The cooler 14 is mounted behind the suction port 16. A plurality of linear guards 18 are attached to the suction port 16 in the vertical and horizontal directions, and a plurality of horizontal dampers 19 are attached to the rear side of the guard 18 at predetermined intervals in the vertical direction. I have. This damper 19 is rotatably supported on both upper ends. When the pressures before and after the damper 19 are balanced, the upper and lower dampers 19 abut, and the suction port 16 is closed. However, when the cooler 14 side has a negative pressure, the lower end of each damper 19 is sucked rearward and lifted, thereby opening the suction port 16.

A cooler-side dew tray 21 is attached to the lower part of the cooler-side case 13 below the cooler 14, and an electrical box 22 is provided below the cooler-side dew tray 21.
A cooler defrost heater 23 is arranged on the front surface of the cooler 14, and its wiring 24 and wiring (not shown) of the electrical box 22 are placed in the cooler side case 13 behind the front plate 17 as shown in FIG. It is drawn into the configured space S.
Further, a pipe 26 from the cooler 14 is also drawn into the space S, and the wiring 24 and the pipe 26 are drawn upward from, for example, a top wall of the cooler side case 13. Incidentally, both side walls of the cooler side case 13 (not shown) are detachable,
Alternatively, it is assumed that openings (not shown) that can be opened and closed over substantially the entirety are formed in both side walls.

Next, the blower-side unit 12 includes blowers 32, 32 each comprising a vertically long blower-side case 31, and propeller fans vertically disposed in the blower-side case 31.
And so on. A discharge port 33 is formed on the front surface of the blower side case 31. The blowers 32, 32 are attached to the rear of the discharge port 33, and a plurality of guards 34, which are composed of linear members, are attached to the discharge port 33 in the vertical and horizontal directions. A plurality of louvers 36 extending in the vertical direction are attached to the rear side of the guard 34 at predetermined intervals on the left and right. The louver 36 is directed in the front-rear direction, and has a function of rectifying the air discharged from the blowers 32 and blowing the air forward.

A blower-side dew tray 37 is attached to a lower portion of the blower-side case 31 so as to correspond to a position below the blowers 32, 32, and an electrical box 40 is provided below the blower-side dew tray 37. Further, a blower defrost heater (not shown) is arranged on a base 38 below the blower 32.

The procedure for assembling the prefabricated refrigerator 1 according to the present invention with the above configuration will be described. First, a plurality of prefabricated panels 3 are assembled to form the storage room 4 and the entrance 7. Next, the cooler-side unit 11 and the blower-side unit 12 separated in advance are separately carried into the storage room 4 from the inlet 7. At this time, since the prefabricated refrigerator 1 is of a refrigerating type, the size of the cooling unit 2 is relatively large because the cooler 14 and the blowers 32, 32 are also large.

However, since the cooling unit 2 is separated into a cooler-side unit 11 and a blower-side unit 12, the dimensions of the individual units 11, 12 are reduced and the weight is reduced. And can be easily passed through the entrance 7 even when it is carried into the storage room 4 from the entrance 7. Therefore, the cooling unit 2 is preliminarily replaced with the prefabricated panel 3 serving as a floor surface.
After installation on top, there is no need to assemble another prefabricated panel 3, and the assembling work is facilitated.

Next, the two units 11 and 12 are installed and connected. Here, for example, the left end (front plate 17 side) of the top wall of the cooler side case 13 and the top of the blower side case 31 Connecting plates 51 and 52 are respectively attached to the right end of the wall, for example. Then, the left side wall facing the cooler side case 13 is removed as described above, and the right side wall facing the blower side case 31 is similarly removed. Next, for example, the cooler-side case 13 is arranged at a predetermined position in advance, and the pipe 26 drawn into the space S opened to the left is connected to a condenser unit (not shown) by piping. The drawn wiring 24 and the like are connected to external wiring connected to the controller 8 and the like.

On the other hand, the blower 3 of the blower side unit 12
The wiring of the blower defrost heaters 2, 32 and the electrical equipment box 40 is drawn out and placed on the right side of the blower side case 31, and is connected to the other wiring 24 and the like of the cooler side unit 11 in the space S. As described above, since piping and wiring can be performed using the space S, workability is remarkably improved as compared with the case where work is performed on the back side of the unit as in the related art, and the risk of damaging the prefabricated panel 3 is reduced. Become. Next, the blower-side case 31 is arranged on the left side of the cooler-side case 13, and the connection plates 51 and 52 are abutted and fixed to each other with screws (the lower portion is also connected by a connection member (not shown)). The two cases 13 and 31 are connected.

The cooler-side dew tray 21 is tilted low to the left in advance, and the blower-side dew tray 37 is tilted low to the right in advance, so that when the units 11 and 12 are connected to each other, Each of them is opened above the common dew tray 53. The dew tray 53 is connected to a drain hose (not shown).
If it is immersed in the defrosting water in 3, the trap part usually formed in the drain hose becomes unnecessary.

In this state, the insides of the two cases 13 and 31 communicate with each other at open side wall portions. Therefore, when the condensing unit and the blowers 32, 32 (not shown) are operated, the blowers 32, 32 suck air from the rear and discharge the air to the front discharge port 33, so that the cooler side connected to the inside of the blower side case 31 is provided. The air in the case 13 is sucked into the blower-side case 31. Thereby, the cooler side case 13
Since the inside becomes negative pressure, the damper 19 opens as described above,
The air in the storage chamber 4 is sucked from the suction port 16 toward the cooler 14.

The refrigerant is supplied to the cooler 14 from the condensing unit and evaporates to exert a cooling function, so that the air in the storage chamber 4 flowing into the cooler 14 is cooled. The cool air cooled by the heat exchange with the cooler 14 moves to the blower-side unit 12, is accelerated by the blowers 32, 32, and is discharged from the discharge port 33 into the storage room 4. Here, if the blowers 32, 32 are propeller fans, the discharged cool air tends to go in the radial direction (outward direction), but since the louver 36 is attached to the discharge port 33, the discharged cool air is It is directed forward of the blower side unit 12. A front plate 17 is provided between the suction port 16 of the cooler-side unit 11 and the discharge port 33 of the blower-side unit 12.
Since the (ie, space S) exists, a so-called short cycle in which the cool air discharged from the discharge port 33 is directly sucked into the suction port 16 is less likely to occur. Accordingly, the discharged cool air circulates through substantially the entirety of the storage chamber 4 as indicated by an arrow in FIG. 1 and then is drawn into the cooler-side unit 11 from the suction port 16. The food on the stored cart 6 is smoothly frozen.

The compressor (not shown) of the condensing unit is operated and stopped at a set temperature, for example, -20 ° C., based on the temperature in the storage chamber 4.
Is always driven. Further, in the cooling operation, the cooler 14
For example, since the frost grows on the blowers 32 and 32, the compressor and the blowers 32 and 32 are periodically stopped, and the cooler defrost heater 23 and the blower defrost heater (not shown) generate heat. Then, the cooler 14 and the blower 32,
Heat 32 to melt away. Cooler 14 and blower 3
The defrost water dropped from 2 and 32 is demanded by the cooler-side dew tray 21 and the blower-side dew tray 37, respectively, flows into the dew tray 53, and is discharged outside by a drain hose (not shown).

Since the blowers 32 during defrosting are stopped as described above, the negative pressure in the cooler side case 13 is eliminated. Therefore, since the dampers 19 hang down and close the suction port 16 as described above, it is difficult for the heat of the cooler defrost heater 23 to be transmitted to the storage room 4. In addition, since the blower-side heater is also provided below the blower 32 as described above, the influence of heat on the storage room 4 is smaller than that provided in front of the blower 32, and the adverse effect due to defrosting on the frozen food in the storage room 4 is generally minimized. Will be kept to a minimum.

Further, the cooler / defrost heater 23 and the blower 3
When a failure occurs in 2, 32, etc., both cases 13,
Disconnect the connection 31 and pull out, for example, the blower-side unit 12 toward you. As a result, the inside of the blower-side case 31 or the space S is open to the side, so that maintenance such as replacement and repair of each device can be performed extremely easily, and the back of the unit as in the related art can be used. There is no danger of damaging the prefabricated panel 3 as in the case of performing work. In this case, if the front plate 17 is detachably mounted, the front plate 17 is removed and the wiring 24 and the like in the space S can be repaired, so that the maintenance workability is further improved.

Here, the installation position of the cooling unit 2 is determined according to the shape and size of the storage room 4 by assembling the prefabricated panel 3, the position of the inlet 7, and the like. In some cases, it may be desired to reverse the arrangement of the cooler-side unit 11 and the blower-side unit 12. In such a case, the right side wall facing the cooler side case 13 is removed and the left side wall facing the blower side case 31 is removed, contrary to the previous case. Then, as shown in FIGS. 7 and 8, the blower-side case 31 is
, And the two cases 13 and 31 may be connected as the right side. It is assumed that the connecting plates 51 and 52 are mounted on the side opposite to the last time.

As described above, according to the present invention, the arrangement of the cooler 14 of the cooling unit 2 and the blowers 32, 32 can be changed according to the position of the prefabricated refrigerator 1 in the storage room 4. In the prefabricated refrigerator 1 having the shape described above, efficient cooling air circulation can be formed in the storage room 4.

[0033] Although the present invention is applied to a prefabricated refrigerator is used as a rapid cooling chamber in the embodiment of claim 1 originating
The present invention is not limited to this, and the present invention is also effective for other refrigerators or showcases corresponding to prefabricated refrigerators .

[0034]

As described in detail above, claim 1 or claim 2
According to the invention, the cooling unit installed in the storage room,
Detachably constituted by a linked cooler side unit to and from the blower side unit, the cooler-side unit condensation Yoo
With the pipe connected to the knit, the cool air that has exchanged heat with the cooler provided in the cooler side unit is forcibly circulated into the storage room by the blower provided in the blower side unit, so it is connected to the condensation unit. When transporting or installing the cooling unit before the cooling unit is installed, the cooling unit and the blower unit can be handled separately.

Accordingly, since the weight and size of each unit are smaller than those of the conventional cooling unit, handling at the time of transportation and installation is easy, and especially in a prefabricated refrigerator.
Since it is possible that bring in from the inlet separately, it is possible to house the storage chamber from assembling the prefabricated panels as insulating wall, restrictions on the assembly is significantly reduced.

Further, since the cooler-side unit and the blower-side unit of the cooling unit are separable, the arrangement of the cooler-side unit and the blower-side unit can be changed according to the position where they are installed in the storage room. Thus, efficient cooling air circulation can be formed in the storage chamber.

Further, according to the second aspect of the present invention,
And the cooling unit in the cooling unit installed in the storage room.
Since a space for piping or wiring was constructed between the blowers,
Perform piping and wiring to and from external equipment in this space
On the back of the cooling unit as before
Piping and wiring work becomes extremely easy
At the same time, the risk of damaging the heat insulating wall is reduced. In particular,
Due to the space between the cooler and the blower, both
Shorts of cold air between them as they are separated
The occurrence of a cycle is also prevented.

In addition, piping and wiring work of the cooling unit,
When performing maintenance work,
Separate the fan-side unit and replace one of the units, for example
Performing these tasks more easily by pulling them out
It will be able to be.

[Brief description of the drawings]

FIG. 1 is an internal perspective view of a prefabricated refrigerator as an embodiment of the present invention.

FIG. 2 is a front view of the cooling unit.

FIG. 3 is a plan view of a cooling unit.

FIG. 4 is a perspective view of a cooling unit.

FIG. 5 is a perspective view of the inside of the cooling unit side of the cooling unit.

FIG. 6 is a diagram illustrating a position of a space in a cooler-side unit of the cooling unit.

FIG. 7 is a front view of a cooling unit in which a cooler-side unit and a blower-side unit are arranged in reverse.

FIG. 8 is a plan view of the cooling unit of FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Prefab refrigerator 2 Cooling unit 3 Prefab panel 4 Storage room 11 Cooler side unit 12 Blower side unit 14 Cooler 32 Blower S space

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hisaga Kajita 2--18 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Mitsuhiro Maeda 2--18 Keihanhondori, Moriguchi-shi, Osaka (56) References JP-A-4-273951 (JP, A) JP-A-4-273952 (JP, A) JP-A-2-124472 (JP, U) JP-A-2-124473 ( JP, U) JP 58-48825 (JP, B2) (58) Fields investigated (Int. Cl. ⁷ , DB name) F25D 17/06 F25D 19/00

Claims (3)

(57) [Claims] 1. A cooling device in which a cooling unit is installed in a storage room constituted by heat insulating walls and cool air is supplied from the cooling unit into the storage room to cool the storage unit. A cooling unit in the cooling unit, a blower in the blowing unit, and a cooling unit in the cooling unit.
A cooling device configured to forcibly circulate cold air that has exchanged heat with the cooler in the storage chamber by the blower in a state where the air is connected to the condensing unit by piping . 2. A storage room is formed inside by a heat insulating wall.
Install a cooling unit in the storage room, and
Prefabricated refrigeration for cooling by supplying cold air to the storage chamber
In a refrigerator, the cooling units are interconnected in a separable manner.
By the connected cooler side unit and blower side unit
And a cooler inside the cooler-side unit.
Are installed in the blower side unit, respectively.
The cooler side unit is connected to the condensation unit by piping.
In this state, the cool air that has exchanged heat with the cooler
Forcibly circulating in the storage room by the machine
A prefabricated refrigerator characterized by the following. 3. A cooler and a blower in a cooling unit.
It is noted that a space for piping or wiring
3. The cooling device or prefab of claim 1 or claim 2,
refrigerator.