JP6275539B2 - Refrigeration unit and cooling storage - Google Patents

Description

  The present invention relates to a refrigeration unit and a cooling storage provided with the same.

  As a cooling storage, an opening is provided on the top surface of a storage body composed of a heat insulating box, and a refrigeration unit is disposed in the opening. The refrigeration unit used here is one in which a compressor, a condenser, etc. are mounted on the upper surface of the unit base, and a cooler is attached to the lower surface, and these components are circulated and connected by a refrigerant pipe. Is formed (Patent Document 1).

  Of these cooling storages, for commercial cooling storages with specifications that cannot be expected to be sold above a certain number, each time an order is received, the heat insulation box and the refrigeration unit are individually designed and manufactured in combination. A build-to-order production system was adopted. In this regard, the inventors of the present invention have made extensive studies and, as a result, manufactured a refrigeration unit so that a predetermined cooling capacity can be exhibited with respect to any of a predetermined group of heat insulation boxes, thereby insulating the refrigeration unit and the heat insulation unit. We succeeded in developing a sales management system that can be used as it is by combining it with a box at the site (Patent Document 2). Such a sales management system can greatly reduce the labor and cost of designing, manufacturing, transporting, repairing, etc. by using a common refrigeration unit. ing.

  On the other hand, as a refrigeration unit for a cooling storage, a compressor and a condenser are shared in a refrigerator-freezer for home use, etc., and two coolers for cooling the refrigerated storage room and the refrigerated storage room are connected in parallel. The one that forms the refrigeration circuit is widely used (hereinafter may be referred to as “1COM-2EVA type refrigeration circuit” in this specification). A refrigeration circuit of 1COM-2EVA type is generally a compressor, a condenser, and a refrigerated storage room cooler and a refrigerated storage room cooler connected in parallel through a refrigerant pipe. The refrigerant discharged from the compressor is condensed in the condenser, and then evaporated in the refrigerated storage room cooler or the refrigerated storage room cooler via the switching means such as a three-way valve, and then returned to the compressor. (Patent Document 3).

JP 2010-101523 A JP 2005-156147 A JP 2012-7799 A

  Here, when it is going to arrange | position the freezing unit which forms the 1COM-2EVA type freezing circuit provided with two coolers in the opening part provided in the heat insulation box body top surface of the cooling storage as mentioned above, Since all the components such as a compressor, a condenser, and a cooler are attached to one unit table, the size of the unit table becomes large. In particular, in a wide cooling storage where the freezer storage room and the refrigerated storage room are arranged separately on the left and right, an increase in the size of the unit base is inevitable if two coolers are arranged in each storage room. When the unit base is enlarged, the transport efficiency and the like are lowered, and a larger space than before is required at the time of manufacturing or repairing the refrigeration unit. Moreover, the workability | operativity etc. of the assembly | attachment work to a heat insulation box also fall, and many workers are needed.

  To reduce the size of the unit table as much as possible, place the unit table around the partition wall between the freezer storage room and the refrigerated storage room, and place the compressor and condenser on the partition wall, A method of arranging the freezer cooler and the refrigerator cooler close to the partition wall is conceivable. However, even in such a case, it is unavoidable that it becomes larger than the conventional one, and each cooler cannot be arranged at the center in the cross section of each storage room, and the temperature distribution in the storage room is uneven. There was a circumstance that it becomes easy to occur.

  Furthermore, as the unit base becomes larger, as described above, in the system in which the size of the opening of the heat insulation box and the unit base of the refrigeration unit are shared for efficient sales management, it has been commonly used in several types. As a result, the operation size of the system is greatly reduced as a result of the need to set a new size.

  In view of the above circumstances, an object of the present invention is to make it possible to apply a 1COM-2EVA type refrigeration circuit in a refrigeration unit arranged on the top surface of a heat insulating box without increasing the size of the unit base.

The refrigeration unit according to the present invention is circulated and connected by refrigerant piping so as to distribute and supply the refrigerant compressed by the compressor and condensed by the condenser to the first cooler and the second cooler. A refrigeration unit comprising:
Including a first unit base and a second unit base;
In the first unit base, the compressor and the condenser are placed on the upper surface, and the first cooler is attached to the lower surface,
The second cooler is attached to the lower surface of the second unit base,
The compressor and the condenser placed on the upper surface of the first unit table, and the second cooler attached to the lower surface of the second unit table can be bent including the refrigerant pipe. The first unit base and the second unit base can be overlapped by being connected by a simple connecting tube.

  According to the present invention, since the components of the refrigeration unit are divided into two unit tables, each unit table can be made compact. As a result, although the refrigeration unit of the present invention includes the 1COM-2EVA type refrigeration circuit, the transport efficiency and the workability of the assembly work can be favorably maintained.

  Further, in the refrigeration unit of the present invention, the two unit bases are connected by the connecting tube, and the relative arrangement of the two unit bases can be changed relatively freely by changing the length of the connecting tube. . Therefore, for example, as described above, in a cooling storage where two independent storage chambers are arranged side by side, even when each storage chamber is cooled by two coolers, the cooler is placed in the center of the cross section of each storage chamber. The storage chamber can be cooled efficiently and uniformly.

  Furthermore, the refrigeration unit of the present invention can stack the unit tables by deforming the connecting tube that connects the two unit tables during storage and transport. Therefore, it is excellent in transportation efficiency and space utilization efficiency. For example, the second unit table is placed on the upper surface of the first unit table with the second cooler placed on the upper surface with the second unit table turned upside down on the upper side of the first unit table connected by the connecting tube. Can be stacked on a compressor or condenser. Alternatively, the front and back surfaces of the second unit table may be maintained and the front and back may be reversed and overlapped on the first unit table. Alternatively, when the cooling storage is completed by combining the refrigeration unit and the heat insulation box at the site, for example, a compressor and a condenser in which only one end of the connecting tube is previously placed on the upper surface of the first unit base. And may be connected to a second cooler attached to the second unit base in the field. In this way, handling of the refrigeration unit before connection is further facilitated.

  In particular, in the sales system as described above in which the size of the unit table is shared, by using the refrigeration unit of the present invention, the unit table of the shared size can be applied as it is. Can be further enhanced.

The refrigeration unit of the present invention preferably has the following configuration.
(1) The connecting tube extends from the compressor and the condenser placed on the upper surface of the first unit table and is fixed to the upper surface of the second unit table. The structure which is connected to said 2nd cooler attached to the lower surface of the said unit base through the provided through-hole.
According to such a structure, since a connection tube is fixed to the upper surface of a 2nd unit base, a deformation | transformation when a certain external force is applied to a connection tube can be suppressed. Moreover, if the length and arrangement | positioning of a connection tube are changed, the contact state of the upper surface of a unit base and a connection tube can be changed. By changing the contact state, the frictional force between the foam resin insulation covering the outside of the connecting tube and the upper surface of the unit base is adjusted to improve stability when the unit bases are overlapped. Can be made. Furthermore, if the connection tube is fixed to the second unit base on the first unit base side with respect to the refrigerant pipe connection portion with the cooler, the stress due to the deformation of the connection tube is applied to the refrigerant pipe connection portion and the cooler itself. Is less likely to be transmitted and the risk of breakage can be reduced.

(2) A configuration in which the connecting tube has a bent portion that is easily bent as compared with other portions of the connecting tube.
According to such a configuration, when the two unit bases are overlapped, the bent portion can be a fulcrum (starting point) when the connecting tube is deformed, and in this case, it is always deformed at a fixed location. As a result, the connecting tube is not bent at an arbitrary portion, and a situation in which unnecessary stress is applied to the piping and the connecting device can be avoided.

(3) A guide mounting portion is provided on each of the first unit base and the second unit base, and a guide for overlapping the unit bases in a predetermined positional relationship between the two unit bases. Configuration that can be installed.
According to such a configuration, when the two unit bases are overlapped, the two unit bases can be connected by attaching a metal or resin plate, a wire mesh or the like as a guide. The connecting tube can be bent in various directions such as front, back, left, right, up and down, so if the two unit bases are overlapped with each other, they will be bent in an inappropriate direction or exceed the allowable range of piping. May be bent. Even if the angle is finely adjusted, if it is repeatedly deformed, the internal refrigerant piping may be damaged, causing gas leakage or clogging. Such a breakage can be avoided by attaching a guide to restrict the relative positional relationship between the two unit bases so that they are always superposed in a predetermined arrangement.

Moreover, the above refrigeration units of the present invention can be preferably used in the following cooling storage.
(4) By providing a heat insulating partition wall in the storage body composed of a heat insulating box, the first storage room and the second storage room are arranged side by side in the storage body. A cooling storage, wherein the first unit table is attached to a first opening provided on a top surface of the first storage chamber, and the first storage chamber is cooled by the first cooler. The second storage unit is attached to a second opening provided on the top surface of the second storage chamber, and the second storage chamber is cooled by the second cooler.
According to such a configuration, two independent storage rooms can be cooled by the two coolers included in the 1COM-2EVA type refrigeration circuit, respectively, and the merits of the refrigeration unit according to the present invention as described above can be obtained. Can be effectively exhibited.

In the cooling storage of the present invention as described above, it is preferable that the set temperature of the first storage chamber is lower than the set temperature of the second storage chamber.
According to such a configuration, the first unit base equipped with electric devices such as a compressor and a condenser is arranged in the storage room on the low temperature side. It can be suppressed by exhaust heat from the electrical equipment.

  According to the present invention, it is possible to obtain a refrigeration unit including a 1COM-2EVA type refrigeration circuit without increasing the size of the unit base. In addition, by applying such a refrigeration unit, it is possible to obtain a cooling storage having a 1COMP-2EVA type refrigeration circuit with excellent cooling efficiency without deteriorating workability such as design, manufacture, transportation and repair. it can.

The perspective view which shows the external appearance of the cooling storage which concerns on 1st embodiment. Perspective view of refrigeration unit Rear view of refrigeration unit Top view of refrigeration unit Longitudinal sectional view showing the refrigeration unit attached to the cooling storage Refrigeration circuit diagram The perspective view which shows the state which accumulated the unit stand The perspective view which shows the state which attached the guide to the freezing unit which concerns on 2nd embodiment. The perspective view which shows the state where the guide was attached to the refrigeration unit and the unit stand was piled up Top view showing other piping paths of connecting tubes

Embodiments of the present invention will be described below with reference to the accompanying drawings.
<First embodiment>
1st Embodiment of this invention is described based on FIGS. 1-7. In this embodiment, a horizontally long cooling storage for business use is illustrated.

First, the overall structure of the cooling storage 1 according to the present embodiment will be described below.
FIG. 1 is an external view of a cooling storage 1 according to the present embodiment. The cooling storage 1 has a storage main body 10 composed of a horizontally long heat insulating box 11 having an open front. In the following description, the front side in FIG. 1 is the front side, the back side is the back side, the left back side is the left side, and the right front side is the right side.
The storage body 10 is provided with a heat insulating partition wall 12 at a position close to the right side of the front opening of the heat insulating box 11, so that a refrigerated storage room (first storage room) 214 is provided on the left side and a right side. A refrigerated storage room (second storage room) 314 is formed in a state of being arranged side by side. Although not shown in FIG. 1, a double-split type freezing room heat insulation door is attached to the front opening of the freezer compartment 214 in two upper and lower stages, and the front opening of the refrigerated storage room 314 is opened to the right, for example. Each of the storage rooms is formed by installing the heat insulation door for the refrigerator compartment in two upper and lower stages.

  As shown by the dotted lines in FIG. 1, the freezing compartment opening 215 (first opening) and the refrigerating compartment opening 315 (first opening) are respectively provided on the top surfaces of the freezing storage compartment 214 and the refrigeration storage compartment 314 in the heat insulating box 11. Two openings) are provided. As will be described later, the freezer compartment unit base 225 (first unit base) is provided in the freezer compartment opening 215, and the freezer compartment unit base 325 (second unit stand) is provided in the freezer compartment opening 315. By being respectively fitted, the freezer compartment unit 221 and the refrigerator compartment unit 321 are arranged on the upper surfaces of the refrigerator compartment 214 and the refrigerator compartment 314.

Next, the structure of the refrigeration unit 20 according to the present embodiment will be described below.
2, 3, and 4 are a perspective view, a rear side elevation view, and a top view of the refrigeration unit 20. The refrigeration unit 20 includes a freezer compartment unit 221, a refrigerator compartment unit 321, and a connecting tube 22 that connects them. The freezer compartment unit 221 includes a freezer compartment unit base 225 on which the compressor 23 and the condenser 24 are placed, and the refrigerating compartment unit 321 includes a refrigerating compartment unit base 325. Here, as the unit table 225 for freezing rooms, for example, a heat insulating material is injected between an exterior plate obtained by sheet metal processing and an interior plate integrally formed of a synthetic resin to improve the heat insulation and strength. Can be used.

  On the upper surface of the freezer unit table 225, a compressor 23 is mounted on the back side (lower side in FIG. 4), and a condenser 24 having a condenser fan 26 on the front side (upper side in FIG. 4). ing. Further, as shown in FIG. 3, a freezer compartment cooler 227 (first cooler) is attached to the lower surface of the freezer compartment unit base 225. The compressor 23 and the condenser 24 placed on the upper surface of the freezer unit table 225 and the freezer cooler 227 attached to the lower surface are provided at appropriate positions on the freezer unit table 225. Circulation connection is established by a refrigerant pipe 28 inserted through upper and lower through holes (not shown).

  On the other hand, no major equipment is arranged on the upper surface of the refrigerator compartment unit table 325, and only the refrigerator 327 (second cooler) is attached to the lower face. As shown in FIG. 2, in the present embodiment, the refrigerant pipes 228 and 328 extending from the refrigerator 327 for the refrigerator compartment are inserted into the upper and lower through holes provided in the unit table 325 for the refrigerator compartment. It extends from the lower side to the upper side. The refrigerant pipes 228 and 328 are welded to the refrigerant pipe connected to the freezer compartment unit 221 on the upper side of the unit base 325, so that the pipes are raised above the upper and lower through holes to form a welded portion 29. Has been.

  As shown in FIG. 2, the connecting tube 22 circulates the refrigerant from the condenser 24 toward the refrigerator 327, the refrigerant pipe 228 for sending the refrigerant, and from the refrigerator compartment 327 to the compressor 23. The refrigerant pipe 328 includes two refrigerant pipes that are covered with a heat insulating material 30. In the welded portion 29 of the present embodiment, a heat insulating material 30 having a large inner diameter is used to collectively insulate the two refrigerant pipes 228 and 328 connected to the inlet and outlet of the refrigerator 327 for the refrigerator compartment. doing. Here, the refrigerant pipe 28 is a deformable metal pipe made of copper or the like, and the heat insulating material 30 uses a foamed resin formed to be deformable. Therefore, the entire connecting tube 22 can be bent and deformed.

  In the present embodiment, in the connection tube 22 extending from the freezer compartment unit 221, the freezer compartment unit base 225 and the refrigerator compartment unit 321 adjacent to each other in the state of being attached to the cooling storage 1 are suitable in the vicinity. Bending portions 131, 231, 331, and 431 are provided at the positions. Among these, the bent portions 131 and 331 are provided at positions where the upper surfaces of the freezer compartment unit base 225 and the refrigerator compartment unit base 325 and the connection tube 22 are in contact with each other so that the connection tube 22 is bent at an appropriate angle in advance. It has been. The connecting tube 22 is disposed along the upper surfaces of the unit bases 225 and 325 by being attached in a state of being bent at an appropriate angle at the bent portions 131 and 331. Further, the connection tube 22 is fixed to the upper surface of the refrigerator compartment unit base 325 by a metal stopper 32 at the base of the bent portion 331. On the other hand, the bent portions 231 and 431 are provided in the vicinity of each adjacent opposing edge between the freezer compartment unit base 225 and the refrigerator compartment unit base 325. The connecting tube 22 is bent at the bent portions 231 and 431 in advance, and is attached to the bent portion 231 and 431 in advance, so that the connecting tube 22 is bent more easily than other portions.

Then, the attachment structure of the freezing unit 20 to the cooling storage 1 is demonstrated.
FIG. 5 is a longitudinal sectional view showing a state where the freezer compartment unit 221 is attached to the freezer compartment 214. The top surface of the freezing storage room 214 is an opening 215, and the freezing room unit base 225 is tightly fitted and fixed to the opening 215 through, for example, packing. The fixing means is not particularly limited, and can be carried out by a well-known and conventional method such as engaging the other claw with a hole provided in one or screwing. The fitting and fixing of the refrigerator room unit base 325 to the top opening 315 of the cold storage room 314 can be similarly performed.

In the cooling storage 1 according to the present embodiment, cooling is performed as follows.
FIG. 6 is a refrigeration circuit diagram according to the refrigeration unit 20 of the present embodiment. The refrigerant discharged from the compressor 23 is condensed by the condenser 24, and then distributed to two parallel circuits for the freezer compartment or the refrigerator compartment via switching means such as the three-way valve 33. The refrigerant sent to the freezer circuit passes through the freezer capillary tube 234 and is depressurized. Then, the refrigerant is evaporated by the freezer cooler 227 to cool the air in the freezer storage chamber 214, and the accumulator 35 is To the compressor 23. Similarly, the refrigerant sent to the refrigerating room circuit passes through the refrigerating room capillary tube 334 and is depressurized. Then, the refrigerant evaporates in the refrigerating room cooler 327 to cool the air in the refrigerating storage room 314, and the accumulator. It is refluxed to the compressor 23 via 35. Each storage chamber is adjusted to a desired set temperature by using a variable capacity inverter compressor as the compressor 23 or by appropriately switching and controlling the three-way valve 33. Although the arrangement of the components of the refrigeration circuit that are not shown in FIGS. 1 to 5 is not particularly limited, in the present embodiment, the three-way valve 33, the freezer compartment capillary tube 234, and The accumulator 35 is attached to the upper surface of the freezer compartment unit table 225, and the refrigerating room capillary tube 334 is attached to the lower surface of the refrigerator compartment unit table 325.

According to this embodiment, the following effects can be obtained.
According to the refrigeration unit 20 according to the present embodiment, the components forming the 1COM-2EVA type refrigeration circuit are divided and arranged into the freezer unit table 225 and the refrigerator unit table 325.
Therefore, the unit bases 225 and 325 can be made compact, and the transportation efficiency and workability of the assembly work can be maintained well. In particular, the refrigerating room unit table 325 has a structure in which main devices are not arranged on the upper surface, and only the refrigerating room cooler 327 (and the refrigerating room capillary tube 334 attached thereto) is attached to the lower surface. And is easy to handle.
Further, as a result of being able to make each unit table 225, 325 compact, a unit table having the same size as that used for a refrigeration unit forming a 1COM-1EVA type refrigeration circuit can be used. Therefore, in particular, in a sales system in which the size of the unit table is made common, the unit table of the size shared for the refrigeration unit forming the 1COM-1EVA type circuit can be applied as it is, and the operation efficiency of the system is further improved. Can do.

According to the refrigeration unit 20 according to the present embodiment, the freezer compartment unit 221 and the refrigerator compartment unit 321 are connected only by the connection tube 22.
Therefore, the relative arrangement of the two units 221 and 321 can be freely changed simply by changing the length of the connecting tube 22. As a result, even when two independent storage rooms 214 and 314 arranged side by side as in the cooling storage 1 according to the present embodiment are cooled by the coolers 227 and 327, respectively, the size of the unit base is changed. The coolers 227 and 327 can be easily disposed at the center of the cross section of each of the storage chambers 214 and 314 without the need for the like, and each of the storage chambers 214 and 314 can be efficiently and uniformly cooled. .

According to the refrigeration unit 20 according to the present embodiment, the unit tubes 225 and 325 can be overlapped by deforming the connecting tube 22 during storage or transport. Specifically, as shown in FIG. 7, the connecting tube 22 is bent at an appropriate angle at the bent portions 231 and 431, and the front and rear sides of the refrigeration room unit base 325 are reversed to It can be overlaid on the placed compressor 23 or condenser 24.
Therefore, it is excellent in workability at the time of manufacture (attachment) and repair, and high transport efficiency and space utilization efficiency can be achieved. In the present embodiment, in order to facilitate these operations, a pair of handles is provided on each side surface of the two unit bases 225 and 325 (FIG. 7 and the like).

According to the refrigeration unit 20 according to the present embodiment, the bent portions 131, 231, 331, and 431 are provided at appropriate positions of the connection tube 22, and the connection tube 22 is used for the freezer compartment when attached to the cooling storage 1. It arrange | positions along the upper surface of the unit stand 225 and the unit stand 325 for refrigerator compartments.
Therefore, in the state attached to the cooling storage 1, it is hard to receive an external influence and even when some external force is applied, an unnecessary deformation | transformation is suppressed. Further, as described above, when the connecting tube 22 is deformed and the two unit bases 225 and 325 are overlapped, the bent portions 131, 231, 331, and 431 can be the fulcrum of deformation, and always at these points. Can be deformed. Therefore, the connection tube 22 is not bent at an arbitrary portion, and a situation where unnecessary stress is applied to the piping on the compressor side can be avoided.

In the refrigeration unit 20 according to the present embodiment, the connection tube 22 is fixed to the upper surface of the refrigeration room unit base 325 by a metal stopper 32 at the base of the bent portion 331.
Therefore, when the connecting tube 22 is deformed as described above and the unit bases 225 and 325 are overlapped, the stress due to the deformation of the connecting tube 22 is hardly transmitted to the welded portion 29 of the refrigerant pipe or the refrigerator 327 for the refrigerator compartment. Thus, the risk of breakage in these delicate parts can be reduced.

In the refrigeration unit 20 according to this embodiment, the bent portions 131, 231, 331, and 431 of the connection tube 22 are all provided by bending the connection tube 22 once in advance.
Therefore, it is not necessary to change the material of the connecting tube 22 (that is, the refrigerant pipe 28 and the heat insulating material 30) or to greatly increase the number of parts, and the above-described effects by these structures can be obtained by simple operations. be able to.

According to the cooling storage 1 according to the present embodiment, the unit 221 including electric devices such as a compressor and a condenser is attached to the refrigeration storage room 214 having a low set temperature.
Therefore, the condensation that tends to occur on the lower temperature side can be suppressed by the exhaust heat of the electrical equipment.

<Second embodiment>
A second embodiment of the present invention will be described with reference to FIGS.
The refrigeration unit 120 according to the second embodiment also forms a 1COM-2EVA type refrigeration circuit, and includes a compressor 23, a condenser 24, a freezer cooler 227, a refrigerating room cooler 327, and the like. The mounting structure and function of the component equipment to be performed are the same as those in the first embodiment. In the description of the second embodiment, those that are not different from those of the first embodiment are denoted by the same reference numerals and description thereof is omitted.
Note that the refrigeration unit 120 according to the second embodiment is different from the first embodiment in that guide mounting portions are provided on two unit bases. In addition, the second refrigeration unit 120 has two units stacked in a manner different from that of the first embodiment, and therefore the number and arrangement of the bent portions provided in the connection tube are also different.

  FIG. 8 is a perspective view illustrating a state in which a guide is attached to the refrigeration unit 120 according to the second embodiment. The refrigeration unit 120 includes a freezer compartment unit 421, a refrigerator compartment unit 521, and a connecting tube 122 that connects them. The freezer compartment unit 421 includes a freezer compartment unit base 425 on which the compressor 23 and the condenser 24 are placed, and the refrigerating compartment unit 521 includes a refrigerating compartment unit base 525.

The freezer unit base 425 and the refrigerator room unit base 525 in the second embodiment are each provided in the vicinity of the front side edge and the back side edge adjacent to each other in the state of being attached to the cooling storage 1. Guide attachment portions 36 are provided at two places, for a total of four places. The structure of the guide mounting portion 36 is not particularly limited, but the guide mounting portion 36 in the second embodiment has a head mounted in a screw hole provided at an appropriate position of each of the unit bases 425 and 525. It is formed by attaching a screw 37 having the same.
In addition, the connection tube 122 in the second embodiment has the bent portions 531 and 631 at the positions where the bent portions 131 and 331 are provided in the first embodiment.

  In the refrigeration unit 120 according to the second embodiment, when the two unit bases 425 and 525 are overlapped, as shown in FIG. 9, the connecting tube 122 is deformed starting from the bent portions 531 and 631, and the unit table for the refrigerator compartment The refrigerator 327 is turned over and placed on the compressor 23 and the condenser 24 placed on the upper surface of the freezer unit table 425 in a state where the refrigerator 327 for the refrigerator compartment is located on the upper surface. .

The refrigeration unit 120 of the second embodiment is characterized in that the deformation of the connecting tube 122 when the two unit bases 425 and 525 are overlapped in this way can be regulated by a guide.
Specifically, prior to superimposing the two unit bases 425 and 525, the guide is attached so as to bridge between the two unit bases 425 and 525 using the guide mounting portion. In the second embodiment, as shown in FIG. 8, two elongate guide plates 38 made of resin are used as guides. The guide plate 38 is adjusted to have appropriate rigidity and flexibility by appropriately selecting the material, thickness, width, length, and the like of the resin constituting the guide plate 38. The guide plate 38 is provided with a locking hole 39 at each position in the vicinity of both ends in the longitudinal direction on the center line in the width direction. The locking hole 39 is an insertion portion through which the head of the screw 37 of the guide mounting portion 36 can be inserted, and extends toward the center in the longitudinal direction continuously to the insertion portion to lock the head of the screw 37. And a possible locking portion. In the second embodiment, a pair of locking holes 39 are provided at various locations, so that the hole through which the screw 37 is inserted can be appropriately selected according to the length of the connecting tube 122 and the like. . The two guide plates 38 slide the entire plate after the heads of the screws 37 of the guide mounting portion 36 are inserted into the insertion portions of the locking holes 39, and the heads of the screws 37 are locked to the locking portions. By doing so, the unit bases 425 and 525 can be fixed.

According to the second embodiment, the following effects can be obtained.
The connecting tube can be bent in various directions such as front, back, left, right, up and down, so if the two unit bases are overlapped with each other, they will be bent in an inappropriate direction or exceed the allowable range of piping. May be bent. Even if the angle is finely adjusted, if it is repeatedly deformed, the internal refrigerant piping may be damaged, causing gas leakage or clogging.
According to the refrigeration unit 120 according to the second embodiment, two deformable guide plates 38 can be attached so as to bridge between the unit bases 425 and 525.
Therefore, the relative positional relationship between the two unit bases is restricted, the size and direction of deformation of the connecting tube are restricted, and it is easy to always superimpose them in a predetermined arrangement, and the above-mentioned inappropriate breakage is prevented. It can be avoided.

According to the refrigeration unit 120 according to the second embodiment, the guide plate 38 can be attached to and detached from the unit bases 425 and 525 by a simple operation.
Therefore, only when it is desirable to regulate the relative positional relationship between the two unit bases 425 and 525 to some extent, for example, when the connecting tube 122 is deformed and overlapped or lowered, or the two unit bases 425 and 425 The guide plate 38 can be attached only during a period in which the 525 is held in an overlapped state. If the guide is removed when not needed, the guide will not get in the way.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.

(1) When the bent portion is provided in the connecting tube in the refrigeration unit according to the present invention as in the above embodiment, the number and arrangement thereof are not particularly limited, and the length and flexibility of the connecting tube, the freezer compartment It can be appropriately changed according to the size of the unit for the refrigerator and the refrigerator. The formation (structure) of the bent portion is not limited to bending in advance. For example, only the heat insulating material of the portion is made of a material that is easily deformed compared to other portions, or is formed in a bellows shape. It can be changed as appropriate, such as being configured to be rotatable.

(2) The length and arrangement state of the connecting tube of the refrigeration unit according to the present invention are not particularly limited. For example, in the refrigeration unit 20 according to the first embodiment, as shown in FIG. 10, the length of contact between the connection tube 22 and the surface of the second unit base 325 is increased to increase the frictional force therebetween. Stability in a state where the two unit bases 225 and 325 are overlapped can be improved. In addition, if the portion where the connecting tube 22 and the surface of the unit base 225 or 325 are in contact with each other is fixed at an appropriate location by a well-known and conventional means such as a metal band, clamp, or purse lock, stress on the piping itself or connected equipment Concentration can be avoided and the deformation direction and amount of the connecting tube can be adjusted appropriately.

(3) When the guide can be attached to the refrigeration unit according to the present invention as in the second embodiment, the material and shape of the guide are not particularly limited. What is necessary is just to be able to carry out a fixed amount of deformation | transformation, In addition to the resin guide plate used in the second embodiment, for example, a metal plate, a wire mesh or the like can be used. Therefore, the structure of the guide mounting portion can be changed as appropriate according to the guide. In the second embodiment, the guide plate is detachably attached. However, in some cases, the guide plate may be fixed by screwing or caulking.

(4) The refrigeration unit according to the present invention can also be applied to a cooling storehouse in which cooling storage chambers having the same set temperature are arranged separately on the left and right. Further, openings may be provided at two locations on the top surface of one cooling storage chamber, and a unit base may be attached to each of the openings to perform cooling from two locations. Even in a large cooling storage room, it becomes easy to reach the cold air everywhere, and temperature unevenness can be eliminated. Moreover, you may apply to a household cooling storage.

DESCRIPTION OF SYMBOLS 1 ... Cooling storage, 10 ... Storage body, 11 ... Thermal insulation box, 12 ... Thermal insulation partition wall, 214 ... Freezing storage room (first storage room), 314 ... Refrigerated storage room (second storage room), 215 ... Freezer compartment opening (first opening), 315 ... Refrigerator compartment opening (second opening), 20, 120 ... Refrigeration unit, 221 and 421 ... Freezer compartment units, 321 and 521 ... Refrigerator compartment use Units 22, 122 ... Connecting tube, 23 ... Compressor, 24 ... Condenser, 225, 425 ... Freezer compartment unit table, 325, 525 ... Cold room unit stand, 26 ... Condenser fan, 227 ... Freezer compartment unit Cooler (first cooler), 327 ... cooler for cold room (second cooler), 28, 228, 328 ... refrigerant pipe, 29 ... weld, 30 ... heat insulating material, 131, 231, 331, 431 ... bent portion, 32 ... metal stopper, 33 The three-way valve, 234 ... freezer compartment capillary tube, 334 ... refrigerating compartment capillary tube, 35 ... accumulator, 36 ... guide mounting portion, 37 ... screw, 38 ... guide plate, 39 ... locking hole

Claims (6)

A refrigerant unit that is compressed by a compressor and condensed by a condenser, and is circulated and connected by refrigerant piping so as to be distributed and supplied to the first cooler and the second cooler,
Including a first unit base and a second unit base;
In the first unit base, the compressor and the condenser are placed on the upper surface, and the first cooler is attached to the lower surface,
The second cooler is attached to the lower surface of the second unit base,
The condenser and the compressor placed on the upper surface of the first unit table and the second cooler attached to the lower surface of the second unit table can be bent including the refrigerant pipe. A refrigeration unit that is connected by a simple connecting tube so that the first unit base and the second unit base can be overlaid.   The connection tube extends from the condenser and the compressor placed on the upper surface of the first unit table and is fixed to the upper surface of the second unit table, and is provided on the unit table. The refrigeration unit for a cooling storage according to claim 1, wherein the refrigeration unit is inserted into the through hole and connected to the second cooler attached to the lower surface of the unit base.   The refrigeration unit according to claim 1 or 2, wherein the connection tube has a bent portion that is easily bent compared to other portions of the connection tube.   Each of the first unit base and the second unit base is provided with a guide mounting portion, and a guide for overlapping the unit bases in a predetermined positional relationship is attached between the two unit bases. The refrigeration unit according to any one of claims 1 to 3, wherein the refrigeration unit is enabled. A cold storage comprising the refrigeration unit according to any one of claims 1 to 4,
By providing a heat insulating partition wall in the storage body consisting of a heat insulating box, the first storage room and the second storage room are arranged side by side in the storage body,
The first unit base is attached to a first opening provided on the top surface of the first storage chamber, and the first storage chamber is cooled by the first cooler,
The second storage unit is attached to a second opening provided on the top surface of the second storage chamber, and the second storage chamber is cooled by the second cooler. .   The cooling storage according to claim 5, wherein a set temperature of the first storage chamber is lower than a set temperature of the second storage chamber.

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