JP3706192B2 - Cooling storage - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cooling storehouse in which the ventilation structure of a machine room is improved.
[0002]
[Prior art]
For example, a distribution car equipped with a cooling function has a structure in which a machine room containing a condensing unit and an electrical box is provided on the upper surface of a movable refrigerating room for storing food. During cooling operation, The condenser unit, especially the condenser, becomes hot and needs to be cooled. Therefore, conventionally, by driving the condenser fan attached to the condenser, the outside air is sucked from the intake port opened on the back side of the machine room, and the warm exhaust after the condenser unit is cooled is The air was exhausted to the outside through an exhaust opening opened on the ceiling or side of the door.
[0003]
[Problems to be solved by the invention]
By the way, in such a distribution vehicle, the tray is often placed on the ceiling surface of the machine room when the vehicle is down, and the remaining juice is dripped from the exhaust port of the ceiling surface into the machine room, which is not hygienic. However, if the exhaust port is limited only to the side, there is a problem that exhaust is not performed sufficiently, and heat is trapped in the machine room, damaging electrical components or reducing the cooling capacity.
The cooling storage of the present invention has been completed based on the above circumstances, and its purpose is to make it possible to effectively use a wide part of the ceiling surface of the machine room for placing articles, The purpose is to prevent electrical components from being damaged by heat.
[0004]
[Means for Solving the Problems]
The invention according to claim 1, formed on the upper surface of the refrigerating compartment, in cooling storage machine room is provided for accommodating the condensing unit and the electrical box, the isolated state the machine is in the indoor unit housing chamber through the wall The condensing unit is housed inside the unit housing chamber, and the electrical box is housed outside, and the unit housing chamber is formed by raising a part of the top plate of the machine room. The unit storage chamber is characterized in that an intake port for sucking outside air and an exhaust port for discharging warm exhaust after cooling the condensing unit are formed.
[0005]
Operation and effect of the invention
<Invention of Claim 1>
During the cooling operation, outside air is sucked into the unit storage chamber from the intake port to cool the condensing unit, and warm exhaust after heat exchange is exhausted to the outside through the exhaust port opened in the unit storage chamber.
That is, warm exhaust is discharged directly from the unit storage chamber provided in an isolated state, so that ventilation is performed efficiently and the warm exhaust is prevented from moving to the electrical box storage position. Can be prevented in advance.
[0006]
Portions ridges are not formed in the top plate of the machine械室is an opening-free closing surface.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment in which the present invention is applied to a cold and cold distribution vehicle will be described with reference to FIGS.
First, the outline of the structure of the cold / hot distribution vehicle according to the present embodiment will be described with reference to FIG. This cold / warm distribution vehicle is provided with a main body 1 configured in the shape of a rectangular box as a whole, a machine room 2 described later in detail on the upper surface, and a plurality of casters 3 for movement at the bottom. However, a handle 4 is provided on each side surface. The warming body 1 is configured as a heat insulating box that is open on both front and rear sides, and has a ceiling wall, a bottom wall, and left and right side walls filled with a heat insulating material such as urethane foam. A hollow intermediate wall 6 is provided in the central portion of the warming room main body 1, thereby forming two left and right wagon storage chambers 7 inside, and doors 8 are opened and closed on the front and back of each wagon storage chamber 7. It is provided as possible.
[0008]
Each wagon storage chamber 7 is provided symmetrically, and a cooler (not shown) that is connected to the condensing unit 20 in the machine chamber 2 to generate cool air is disposed in the intermediate wall 6. The cool air is circulated and supplied to a region closer to the intermediate wall 6 in each wagon accommodating chamber 7 by a fan. On the other hand, a heating unit 34 (see FIG. 2) is installed on the ceiling surface of the outer portion of the left and right wagon storage chambers 7, and the hot air generated there is an area closer to the left and right side walls in each wagon storage chamber 7. It is designed to be circulated and supplied.
[0009]
In each wagon storage chamber 7, a wagon 12 provided with shelves 11 for storing plastic trays 10 on which foods are placed in upper and lower stages is accommodated in such a manner that it can be pulled out via wheels 13. The tray 10 is formed in a horizontally-long rectangular shape, and food that is provided in a cold state on one side across a boundary portion 10a provided in the approximate center of the width and food that is supplied in a warm state on the other side are respectively loaded. Placed. The wagon 12 is provided with a heat insulating wall 14 so as to partition it left and right, and each tray 10 is placed on the shelf 11 with its boundary portion 10a being inserted into a gap 15 provided in the heat insulating wall 14. It is like that. When the wagon 12 provided with the heat insulating wall 14 is accommodated in the wagon accommodating chamber 7 as described above, the right-side wagon accommodating chamber 7 has the refrigerator compartment 17 on the left side and the warming chamber 18 on the right side. In the left wagon storage chamber 7, a refrigeration chamber 17 is configured on the right side, and a warm storage chamber 18 is configured on the left side. Therefore, the cold food placed on one tray 10 is kept warm in the cold storage room 17 and the hot food is kept warm in the warm storage room 18.
[0010]
Next, the structure of the machine room 2 will be described in detail.
As shown in FIG. 2, a condensing unit 20 is installed on the upper surface of the warming room main body 1 that is the bottom surface of the machine room 2 so as to straddle the center in the width direction, that is, the upper surfaces of the left and right refrigerator compartments 17. Yes. The condensing unit 20 is installed on a rectangular base 21, and a compressor 22, a condenser fan 23, and a condenser 24 are sequentially arranged from the front side. The condensing unit 20 is connected to the above-described cooler in the intermediate wall 6 by pipes to constitute a known refrigeration cycle.
[0011]
The periphery of the condensing unit 20 is covered with a partition wall 25 attached so as to fit on the outside of the base 21. The partition wall 25 is roughly composed of a front wall 26 and left and right side walls 27. As shown in FIG. 4, the left and right side walls 27 extend from the front edge of the upper surface of the warming-holding body 1 to a position slightly before the rear edge, and the rear edge of the side wall 27 extends to the vicinity of the end of the condenser 24. It is bent inward. Each bent portion 28 is fitted to the outside of a bracket 30 erected at the corner on the rear edge side of the base 21, but the right bracket 30 as viewed from the front of both brackets 30 has a tip of the bent portion 28. A partition wall 31 protruding from the portion toward the back side is formed. The front wall 26 is disposed so as to be interposed between the side walls 27 at a position that is inwardly of a predetermined dimension from the front edges of the left and right side walls 27.
[0012]
In addition, the heating unit 34 described above is attached by being fitted into the attachment holes 35 at positions corresponding to both sides in the length direction of the upper surface of the warm storage body 1, that is, above the left and right warming chambers 18. A rectangular parallelepiped electrical box 37 in which various electrical components are housed is installed at a position between the left heating unit 34 as viewed from the front and the left side wall 27 of the partition wall 25. In detail, as shown in FIG. 4, it is installed in a substantially half region on the back side.
[0013]
As panels forming the machine room 2, front and rear and left and right panels 40 to 43 standing along the peripheral edge of the upper surface of the greenhouse 1 are provided, and a top plate 44 is placed thereon. As shown in FIG. 4, the front edges of the left and right side walls 27 of the partition wall 25 are applied to the inner surface of the front panel 40, and a storage space 47 is formed between the front panel 40 and the front wall 26. A panel box 46 is accommodated therein.
The front end of the partition wall 31 protruding from the bent portion 38 of the right side wall 27 is applied to the inner surface of the rear panel 41 at a right angle, and the space between the right bent portion 28 and the rear panel 41 is closed. . The space between the bent portion 28 of the left side wall 27 and the rear panel 41 is opened to form an inflow path 48.
[0014]
The top plate 44 is formed with a raised portion 50 raised at a predetermined height at a central portion in the length direction, that is, at a portion corresponding to the installation position of the condensing unit 20. The raised portion 50 has a flat square shape, the top surface is flat, the front and rear side surfaces of the surrounding four side surfaces are vertical surfaces, and the left and right side surfaces are inclined surfaces. The top plate 44 is covered and fixed in a state where it is applied to the upper edges of the four panels 40 to 43 and the partition wall 25, whereby the machine room 2 is configured. Bumpers 52 are respectively attached to the four corner portions of the machine room 2.
[0015]
Therefore, in the machine room 2, as shown in FIG. 4, a unit storage chamber 54 surrounded by the partition wall 25 is formed at the center thereof, and the condensing unit 20 is stored therein. The unit storage chamber 54 is isolated from the right room 55b via the partition wall 31 and is in communication with the left room 55a via the inflow path 48 on the outside air entrance side. is there. As shown in FIG. 2, an air filter 57 is mounted on the rear surface side of the condenser 24 through an insertion groove 56 opened on the top surface of the raised portion 50.
[0016]
The air flow structure is as follows. As shown in FIG. 3, a large number of air inlets 59 for sucking outside air are opened at the center of the rear panel 41 and the rear surface of the raised portion 50 of the top plate 44, that is, the back surface position of the unit storage chamber 54. On the other hand, a large number of exhaust ports 60 for discharging warm exhaust air to the outside are opened on the front surface, the top surface, and the front end sides of the left and right side surfaces of the raised portion 50.
[0017]
Further, as shown in FIGS. 3 and 4, the left side panel 42 as viewed from the front of the machine room 2 has a plurality of auxiliary intake ports 62 opened at the front end portion thereof. The entire opening area of the auxiliary intake port 62 is set to be less than half of the entire opening area of the intake port 59 provided on the back side of the unit storage chamber 54 described above. Further, as shown in FIG. 4, the electrical box 37 has openings 64 on the left side surface and the rear surface. Therefore, an auxiliary intake passage that extends from the auxiliary intake port 62 of the side panel 42 through the installation position of the electrical equipment box 37 to the inflow passage 48 is formed in the left side chamber 55a of the unit storage chamber 54 along the diagonal line. It has come to be.
[0018]
The present embodiment has the above-described structure, and the operation thereof will be described subsequently.
When the cooling operation is performed, the condenser fan 23 is driven, so that outside air is supplied from the intake port 59 formed on the back surface of the unit storage chamber 54 as shown by the arrow in FIGS. The warm exhaust after being sucked into the interior, cooling the condenser 24 and the compressor 22 and exchanging heat is the front side of the unit storage chamber 54, that is, the front side of the raised portion 50, the top side, and the left and right side surfaces. It is discharged to the outside through an exhaust port 60 provided on the front end side. That is, all the warm exhaust generated in the unit storage chamber 54 is discharged to the outside from the exhaust port 60 on the front side without going to the left and right rooms 55a and 55b.
[0019]
Further, when the heating operation is performed together, the temperature of the left and right rooms 55a and 55b immediately above the warming room 18 rises, which may adversely affect the electrical components in the electrical box 37 installed in the left room 55a. There is. However, by driving the condenser fan 23 described above, as shown by the arrow in FIG. 4, the outside air is sucked from the auxiliary air inlet 62 of the side panel 42 and passes through the electrical box 37 through the passage 64. The air flow is introduced into the unit storage chamber 54 from the inflow path 48 and then discharged to the outside. Since the opening area of the auxiliary intake port 62 is suppressed to be smaller than the opening area of the intake port 59 on the back surface of the unit storage chamber 54, the outside air flows slowly in the left room 55a. In this way, the outside air flows slowly slowly in the electrical equipment box 37, so that the electrical equipment is effectively cooled, and damage or the like is prevented in advance.
[0020]
Further, the air whose temperature has risen in the left room 55a is also introduced into the unit storage chamber 54 from the inflow path 48 so as to be involved in the flow of the outside air, and is discharged to the outside. In particular, in the opposite right room 55b, the unit storage room 54 and the left room 55a are blocked by the partition wall 25 and the partition wall 31, so that the left room 55a is ventilated efficiently.
[0021]
As described above, according to the present embodiment, the unit storage chamber 54 storing the condensing unit 20 is provided in an isolated manner in the machine chamber 2, and the warm exhaust after heat exchange with the condensing unit 20 is performed as follows. Since it is discharged directly from the unit storage chamber 54 without going to an extra place, ventilation is performed efficiently. Moreover, in addition to the above-described warm exhaust being prevented from hitting the electrical equipment box 37, outside air is directly applied to actively cool the electrical equipment box 37, so that the electrical equipment can be reliably damaged. To be prevented. Moreover, since the same condenser fan 23 is used to create the flow of the outside air applied to the electrical equipment box 37, it is excellent in economic efficiency.
[0022]
Moreover, the exhaust port 60 for warm exhaust is formed only in the raised portion 50 of the top plate 44, and the portion of the top plate 44 corresponding to the upper side of the left and right rooms 55a and 55b is a closed surface without an opening. It can be used as a mounting surface of the tray 10 without worrying about the fall of foreign matter. Further, since the exhaust port is not formed in the front panel 40, it is possible to avoid feeling uncomfortable by receiving warm exhaust on the face or the like when the panel box 46 is operated.
[0023]
<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, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.
(1) The present invention can be widely applied not only to the cold / warm distribution vehicle shown in the above embodiment, but also to cooling storages that are used alone such as refrigerators and freezers.
[Brief description of the drawings]
FIG. 1 is an external perspective view of a cold and cold distribution vehicle according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of a machine room.
FIG. 3 is a perspective view of the machine room as viewed from the back.
FIG. 4 is a cross-sectional view of the machine room as viewed from above.
5 is a cross-sectional view taken along line VV in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Warm-warming body 2 ... Machine room 17 ... Refrigeration room 20 ... Condensing unit 23 ... Condenser fan 25 ... Partition 31 ... Partition wall 37 ... Electrical equipment box 42 ... Side panel 48 ... Inflow channel 54 ... Unit storage room 55a, 55b ... Left and right rooms 59 ... Inlet port 60 ... Exhaust port 62 ... Auxiliary exhaust port 64 ... Vent (of electrical box 37)

Claims (1)

In the cooling storage room provided with a machine room for storing the condensing unit and the electrical equipment box on the upper surface of the refrigerator compartment,
The machine in the room unit storing room is formed in isolated state through the wall, condensation units inside of the unit housing chamber, and electrical equipment box on the outside is accommodated, respectively, and the unit accommodating chamber said machine An air inlet for sucking outside air and an air outlet for discharging warm exhaust after cooling the condensing unit to the unit storage chamber having the raised portion are formed by raising a part of the top plate of the chamber. A cooling storage characterized by being formed.

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