JP6402972B2 - Cooling storage - Google Patents

Description

  The present invention relates to a cooling storage house that is housed in a machine room in which a compressor and a condenser are installed and installed in a unit base.

  Conventionally, this kind of cooling storage has, for example, a machine room arranged side by side on the side of the storage room, and a cooling unit comprising a compressor, a condenser, a condenser blower, etc. constituting a cooling device is installed in the machine room. . The front surface of the machine room is open, and the front surface is closed by an openable / closable grill. In addition, the compressor, condenser, and condenser blower (cooling unit) are installed on the unit base, and are structured so that they can be pulled forward from the machine room together with the unit base. And the cooling unit can be pulled out from the machine room together with the unit base (see, for example, Patent Document 1).

  FIG. 4 shows a vertical side view of the machine room 101 portion of the conventional cooling storage 100. A unit base 102 is installed at the bottom of the machine room 101, and a condenser 103, a condenser fan 104, and a compressor 106 are installed on the unit base 102 from the front. The compressor 106 was connected to the evaporator 108 by a refrigerant pipe 107 on the low pressure side. In this case, the refrigerant pipe 107 is pulled out from the front side part of the cooling box 109 in which the evaporator 108 is accommodated, extends upward, then bends backward, and is bent downward at the rear part of the machine room 101, and is predetermined. After descending the distance, it was bent forward and extended forward a predetermined distance, then turned back and welded to the front side of the compressor 106.

  The power supply terminal 110 of the compressor 106 is provided on the front side surface of the compressor 106. When the maintenance of the compressor 106 and the like is performed, the unit base 102 and the unit base 102 are pulled forward from the machine room 101 as shown in FIG.

JP 2005-180785 A

  Since the conventional cooling storage 100 is configured as shown in FIG. 4, when the unit base 102 is pulled out, a force as indicated by an arrow in FIG. The pipe 107 may be greatly deformed and the refrigerant pipe 107 may be crushed or weld cracked. Therefore, as shown in FIG. 4, only about half of the cooling unit can be pulled out from the machine room 101, maintenance work is extremely difficult, and there is a high risk of injury to the operator.

  For this reason, in order to perform maintenance (repair / replacement, etc.) services for the compressor 106, it has been necessary to move the cooling storage 100 and remove the side plate of the machine room 101. The kitchen where the restaurant is installed is extremely small, making it difficult to move the cooling storage itself.

  The present invention has been made to solve the conventional technical problems, and provides a cooling storage room that can easily draw out and maintain a compressor and a condenser installed in a machine room. Objective.

In order to solve the above problems, a cooling storage of the present invention includes a machine room in which a compressor and a condenser are installed, and is provided in a machine base and a unit base in which the compressor and the condenser are installed. The unit base includes a rail on which the unit base is slidable in the front-rear direction, and a refrigerant pipe that connects the compressor and the evaporator that constitute the refrigeration cycle together with the compressor. And the refrigerant pipe is bent forward with a predetermined curvature from the upper extension part and forwardly from the upper extension part by a predetermined distance . A U-turn shaped turn part that is bent backward with a predetermined curvature and extends a predetermined distance after extending, and a lower extension part that extends downward from the turn part and is connected to the compressor. It is characterized by that.

The cooling storage of the invention of claim 2 is characterized in that, in the above invention, the lower extension portion of the refrigerant pipe is welded to the rear side surface of the compressor.

The cooling storage of the invention of claim 3 is characterized in that, in the above invention, the compressor includes a power feeding terminal on a rear side surface.

  According to the present invention, in a cooling storage room having a machine room in which a compressor and a condenser are installed, the unit base in which the compressor and the condenser are installed, the machine base, and the unit base slides in the front-rear direction. A rail that is freely mounted, and a refrigerant pipe that connects the compressor and the evaporator that constitute the refrigeration cycle together with the compressor, and the compressor and the condenser can be drawn forward from the machine room together with the unit base. In addition, a turn shape that extends forward and then bent backward with a predetermined curvature is provided in the middle of the refrigerant pipe, so that the unit base is moved forward from the machine room for maintenance service of the compressor and condenser. When pulled out, the refrigerant pipe connecting the evaporator and the compressor expands its turn shape and extends.

  Further, when the unit base is pushed into the machine room, the turn shape of the refrigerant pipe is restored, so that the unit base contracts. As a result, even if all the compressors and condensers on the unit base are pulled forward from the machine room, the refrigerant pipes are not easily crushed and weld cracks are less likely to occur at the connecting parts between the refrigerant pipes and the compressors. It is possible to significantly improve.

In addition, the refrigerant pipe is bent forward with a predetermined curvature from the upper extension portion extending backward from the evaporator, and after being extended a predetermined distance, is then bent backward with a predetermined curvature, Since it has a U-turn-shaped turn part that extends a distance and a lower extension part that extends downward from this turn part and is connected to the compressor, the refrigerant pipe effectively utilizes the space in the machine room. The occurrence of crushing and welding cracks can be effectively eliminated or suppressed.

In particular, welding cracks at the time of pulling out the unit base can be more effectively suppressed by welding the lower extending portion of the refrigerant pipe to the rear side surface of the compressor as in the invention of claim 2 . In this case, even if the power supply terminal of the compressor comes to the rear side as in the third aspect, the compressor and the condenser on the unit base can all be pulled out from the machine room, so that the maintenance of the terminal is not hindered.

It is a front view of the machine room part of the cooling storage of one Example to which the present invention is applied. It is a vertical side view of the machine room part of the cooling storage of FIG. 1 (the grill is removed). It is a vertical side view of the machine room part of the cooling storage of FIG. 1 in a state in which the unit base is pulled out from the machine room. It is a vertical side view of the machine room part of the state which pulled out the unit base of the conventional cooling storage.

  Hereinafter, embodiments of the present invention will be described in detail. The cooling storage 1 according to the embodiment is a so-called undercounter type commercial refrigerator. The cooling storage 1 includes a heat insulating box 2 in which a storage chamber (not shown) is formed, and a heat insulating door 3 that closes a front opening of the heat insulating box 2 so as to be freely opened and closed. A machine room 4 is formed on the side of the heat insulation box 2 (outside the heat insulation box 2), and a top table 6 is attached to the upper surface of the heat insulation box 2 and the machine room 4. It has been. The heat insulation box 2, the machine room 4 and the top table 6 constitute a main body 7 of the cooling storage 1.

  The front surface of the machine room 4 is open. In the embodiment, the opening is closed by a resin grill 8 fixed to the main body 7 by screws. In the machine room 4, a compressor 11, a condenser 12, a condenser blower 13, an electrical box 14, and the like are installed. In this case, the compressor 11, the condenser 12, and the condenser fan 13 are mounted on the unit base 16, and the condenser 12 is compressed to the frontmost part, the condenser blower 13 on the rear side, and the rearmost part on the rear side. The compressor 11, the condenser 12, and the condenser blower 13 constitute a cooling unit 17 of the cooling storage 1.

  An opening 19 is formed in the upper part of the grill 8 to expose the operation unit 18 of the electrical box 14. Further, an intake port 21 is formed at the lower portion of the grill 8 corresponding to the front of the condenser 12, and a filter 22 is attached to the intake port 21 so as to be detachable from the outer surface of the grill 8 (see FIG. 1).

  On the other hand, the unit base 16 is slidably mounted on the rails 23 in the front-rear direction installed on both sides of the base plate 20 at the bottom of the machine room 4, and is always attached to the base plate 20 with screws 25. In a state in which it is fastened together with the grill 8 and the screw 25 is removed, the grill 8 can be opened and pulled forward from the front opening of the machine room 4. That is, the cooling unit 17 including the compressor 11, the condenser 12, and the condenser blower 13 is configured to be able to be drawn forward from the machine room 4 together with the unit base 16 with the grill 8 removed.

  Further, a cooling box 24 is located above the compressor 11 and the condenser 12. The cooling box 24 houses the compressor 11, the condenser 12 and the like, an evaporator 26 and a blower (not shown) constituting a known refrigeration cycle, and the inside of the cooling box 24 is inside the heat insulating box 2. It communicates with the storage room. Reference numeral 27 denotes a power supply terminal provided on the rear side of the compressor 11.

  Further, a refrigerant pipe (suction pipe) 28 on the low pressure side of the refrigeration cycle is drawn out from the cooling box 24, and connects the evaporator 26 and the compressor 11 (FIG. 2). The drawn refrigerant pipe 28 is drawn from the front part of the side surface of the cooling box 24, extends slightly upward, and is further bent (curved) rearwardly with a predetermined radius of curvature. Extends a predetermined distance backward. This portion is referred to as an upper extension portion 31.

  The refrigerant pipe 28 is further bent forward (curved) with a predetermined radius of curvature from the end of the upper extension 31 to the rear upper side in the machine chamber 4 and extends forward a predetermined distance, and then again has a predetermined radius of curvature. Is bent backward (curved) and extends backward a predetermined distance. This portion is referred to as a turn portion 32.

  The refrigerant pipe 28 is bent (curved) downward with a predetermined radius of curvature at the rear of the machine room 4 from the end of the turn part 32 and extends downward in the machine room 4 by a predetermined distance. This portion is referred to as a lower extension portion 33. And the terminal of this lower extension part 33 is connected to the rear side of compressor 11 by welding. Thereby, the turn shape (U-turn shape turn part 32) curved forward is formed in the middle part (substantially central part in an example) of refrigerant piping 28.

  With such a configuration, for example, when performing maintenance of the compressor 11, first, the screws 25 that fasten the base plate 20, the grill 8, and the unit base 16 are removed, and the grill 8 is removed from the main body 7 to remove the machine room 4. Open the front opening. Next, the cooling unit 17 including the compressor 11, the condenser 12, and the condenser blower 13 together with the unit base 16 is drawn forward from the machine room 4.

FIG. 3 shows a state in which the cooling unit 17 is pulled out. When the compressor 11 moves forward together with the unit base 16, the refrigerant pipe 28 is also pulled forward by the welded portion between the lower extension 33 of the refrigerant pipe 28 and the compressor 11 (the end of the lower extension 33), and the lower part The terminal end of the extension part 33 moves forward, and the terminal end of the upper extension part 31 curves downward. Further, at this time, the turn part 32 formed in the middle part of the refrigerant pipe 28 extends forward, then is bent backward with a predetermined curvature, and has a shape extending rearward. As shown by the arrow, it expands.

  As a result, the refrigerant pipe 28 apparently extends. Therefore, even if all the cooling units 17 including the compressor 11, the condenser 12, and the condenser blower 13 are pulled forward from the machine room 4 as shown in FIG. The piping 28 is not crushed, and there is no inconvenience that the welded portion between the compressor 11 and the lower extending portion 33 is broken.

  In particular, in the embodiment, the terminal 27 is provided on the rear side surface of the compressor 11, and the refrigerant pipe 28 is welded to the rear side surface of the compressor 11. Therefore, the front side surface of the compressor 11 as in the prior art (FIG. 4). Compared with the case where welding is performed, the stress applied to the welded portion is also reduced. Even if the terminal 27 is provided on the rear side of the compressor 11, all the compressor 11 is pulled forward from the machine room 4, so that maintenance of the terminal 27 and replacement of the compressor 11 can be easily performed. It can be carried out.

  When the unit base 16 is pushed into the machine room 4 after maintenance, the turn part 32 is restored and the upper extension part 31 moves upward, so that the refrigerant pipe 28 seems to be shrunk. become. As a result, the cooling unit 17 and the refrigerant pipe 28 are housed in the machine room 4 as they are. Note that after the unit base 16 is pushed into the machine room 4, the unit base 16 is again fastened together with the grill 8 to the base plate 20 with the screws 25.

  Note that a capillary tube (not shown) is also attached to the refrigerant pipe 28 from the outlet of the condenser 12 and is connected to the evaporator 26 in the cooling box 24. The refrigerant pipe 28 and the capillary tube (not shown) are surrounded by a heat insulating tube. With such a configuration, the capillary tube from the condenser 12 toward the evaporator 26 is also crushed when the unit base 16 is pulled out. And care is taken to prevent damage.

  As described above, the cooling unit 17 including the compressor 11, the condenser 12, and the condenser blower 13 is installed on the unit base 16, and the unit base 16 and the unit base 16 can be drawn forward from the machine room 4. In the middle of the refrigerant pipe 28 that connects the compressor 26 and the compressor 11, a turn part 32 that extends forward and then is bent backward with a predetermined curvature is formed, so that the maintenance of the compressor 11 and the condenser 12 is performed. Therefore, when the unit base 16 is pulled forward from the machine room 4, the refrigerant pipe 28 connecting the evaporator 26 and the compressor 11 has its turn portion 32 expanded and extended.

  Further, when the unit base 16 is pushed into the machine room 4, the turn shape of the refrigerant pipe 28 is restored to be shrunk. As a result, even if the compressor 11, the condenser 12, and the condenser blower 13 on the unit base 16 are all pulled forward from the machine chamber 4, the refrigerant pipe 28 is crushed and the refrigerant pipe 28 is connected to the compressor 11. Therefore, it becomes difficult to generate weld cracks, and the maintainability can be remarkably improved.

  In this case, as in the embodiment, after the refrigerant pipe 28 is bent forward with a predetermined curvature from the upper extending portion 31 extending backward from the evaporator 26 and extending a predetermined distance from the upper extending portion 31. Since it has a shape including a turn part 32 bent rearward at a predetermined curvature and extending a predetermined distance, and a lower extension part 33 extending downward from the turn part 32 and connected to the compressor 11. The space in the machine room 4 can be effectively used to effectively eliminate or suppress the occurrence of the collapse of the refrigerant pipe 28 and the occurrence of weld cracks.

  In particular, by welding the lower extending portion 33 of the refrigerant pipe 28 to the rear side surface of the compressor 11 as in the embodiment, the weld crack when the unit base 16 is pulled out is further effectively suppressed. In this case, since the compressor 11, the condenser 12, and the condenser fan 13 on the unit base 16 can all be pulled out from the machine room 4 even when the power supply terminal 27 of the compressor 11 comes to the rear side, maintenance of the terminal 27 is performed. Will not cause any problems.

  In the embodiment, the present invention has been described by taking a so-called undercounter type commercial refrigerator as an example. However, the present invention is not limited to this, and the present invention is not limited to this. The present invention is applicable.

DESCRIPTION OF SYMBOLS 1 Cooling storage 2 Heat insulation box 3 Heat insulation door 4 Machine room 7 Main body 8 Grill 11 Compressor 12 Condenser 13 Condenser blower 16 Unit base 17 Cooling unit 23 Rail 26 Evaporator 27 Terminal 28 Refrigerant piping 31 Upper extension part 32 Turn Part (turn shape)
33 Lower extension

Claims (3)

In a cooling storage room equipped with a machine room in which a compressor and a condenser are installed,
A unit base in which the compressor and the condenser are installed;
A rail provided in the machine room, on which the unit base is slidably mounted in the front-rear direction;
A refrigerant pipe connecting the evaporator and the compressor that constitute a refrigeration cycle together with the compressor;
The compressor and the condenser can be pulled out forward from the machine room together with the unit base,
The refrigerant pipe is bent forward with a predetermined curvature from the upper extension portion extending backward from the evaporator, and is bent forward with a predetermined curvature after extending forward by a predetermined distance from the upper extension portion. A cooling storage comprising: a U-turn shaped turn part extending a predetermined distance; and a lower extension part extending downward from the turn part and connected to the compressor . Lower extending portion of the refrigerant pipe, the cooling storage according to claim 1, characterized in that it is welded to the rear side of the compressor. The cooling storage according to claim 2 , wherein the compressor includes a power feeding terminal on a rear side surface.

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