JP2012154564A - Cooling storage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent dew condensation to a partitioning frame while reducing manufacturing cost and running cost.SOLUTION: A refrigerator includes a refrigerator body 10 composed of a heat insulating box body with its front face opened, the partitioning frame 20 assembled in a cross shape is mounted to a front face opening 11 of the body 10, entrances 12 partitioned to right and left are formed on both sides of a vertical frame 21, and a pair of heat insulating doors 30 of double-door type is openably mounted on both entrances 12. End faces 35 to be abutted each other when both heat insulating doors 30 are closed are formed as curved faces such that an interval between both end faces 35 is gradually narrowed toward the outside of the refrigerator from the inside thereof, and protruded ends 35A of edges at the outside of the refrigerator are adjacent, forming a nearly closed configuration. Thereby, when the doors are closed, a ventilation path 37 which is vertically opened and oriented longitudinally is formed between both end faces 35 and the vertical frame 21 when the doors are closed.

Description

  The present invention relates to a cooling storage in which dew condensation prevention means is improved.

For example, a commercial four-door refrigerator includes a storage body composed of a heat-insulated box with an open front, and a heat-insulating partition frame having a cross shape is provided at the front opening of the storage body, and is divided into left and right partitions. The formed doorway is formed in two upper and lower stages, and a pair of left and right heat insulating doors are attached to both doors of each stage so as to be openable and closable.
Here, in such a refrigerator, the partition frame is cooled by the cool air inside the cabinet, whereas condensation is likely to occur because the outside air of the partition frame comes into contact with the outside air through the gap between the peripheral edges of each heat insulating door. There is a circumstance. Therefore, conventionally, a dew condensation prevention heater is embedded in the back side of the outer surface of the partition frame, and the same surface of the partition frame is heated to prevent dew condensation (see Patent Document 1).

JP 2004-116840 A

However, in the above conventional prevention measures, a condensation prevention heater is required separately, and it takes time to embed the work, so that the manufacturing cost increases, and the heater power consumption increases the running cost. Further improvements were eagerly desired.
The present invention has been completed based on the above circumstances, and an object of the present invention is to prevent condensation on the partition frame while suppressing manufacturing cost and running cost.

  As means for achieving the above object, the present invention comprises a storage body composed of a heat insulating box having an open front surface, and a vertical partition frame is provided at the front opening of the storage body to partition left and right. In a cooling storehouse in which a pair of heat insulating doors are installed in both doorways so as to be openable and closable, the end surfaces that face each other when the heat insulating doors are closed are directed from the inside to the outside of the warehouse. It is characterized in that it is formed in such a form that the interval between the both end faces is gradually narrowed, and a vertical ventilation path is formed between the both end faces and the partition frame when the door is closed. .

According to the said structure, when the left-right paired heat insulation door is closed, a vertical ventilation path is formed in the near side of the surface of the outer side of a partition frame. During the cooling operation, the air in the ventilation path gradually sinks as it is cooled by the cold heat from the partition frame, and accordingly the inside of the ventilation path inclines from the upper side to negative pressure, so that relatively hot outside air opens at the upper end. The convection phenomenon that flows into the ventilation path from the side occurs. In other words, the relatively high temperature outside air flows down sequentially in the ventilation path, and the outside air itself circulates in combination with the temperature rise of the outside surface of the partition frame. Condensation on the surface is prevented.
That is, since the dew condensation of the partition frame can be prevented without providing the dew condensation prevention heater, the manufacturing cost and the running cost can be reduced.

The following configuration may also be used.
(1) A fan is provided on the upper surface of the storage body, and a duct for guiding the air blown from the fan toward the upper end opening of the ventilation path is provided.
By driving the fan, relatively high temperature outside air is forced into the ventilation path through the duct, and the dew condensation of the partition frame is more reliably prevented. Since the drive of the fan is sufficient even at a low speed, it consumes less power than the energization of the heater, and an increase in running cost can be suppressed.

(2) The fan is a condenser fan that sucks outside air and applies it to the condenser, and functions to blow out exhaust heat after cooling the condenser.
Since the exhaust heat after having been used for cooling the condenser is driven into the air passage, it is possible to more reliably prevent the partition frame from being condensed. Since the existing condenser fan is used, an increase in manufacturing cost can be suppressed.

  According to the present invention, it is possible to prevent condensation on the partition frame while suppressing the manufacturing cost and the running cost.

The perspective view of the refrigerator which concerns on Embodiment 1 of this invention. Perspective view of heat insulation box Plan sectional view showing the formation structure of the ventilation path The fragmentary sectional side view which shows the ventilation structure which concerns on Embodiment 2. FIG. The fragmentary sectional side view which shows the ventilation structure which concerns on Embodiment 3. Plan sectional drawing which shows the formation structure of the ventilation path which concerns on Embodiment 4. The perspective view of the refrigerator which concerns on Embodiment 5.

<Embodiment 1>
Embodiment 1 of the present invention will be described with reference to FIGS. In this embodiment, a four-door type commercial refrigerator is illustrated.
The refrigerator according to the present embodiment includes a refrigerator main body 10 (hereinafter simply referred to as a main body 10) formed of a rectangular heat insulation box having an open front surface. The heat insulating box has a structure in which, for example, an inner box is assembled in the outer box with a space therebetween to form an outer shell, and a heat insulating material made of foamed resin is foam-filled in the outer shell, and at least the front opening 11 is provided. A magnetic metal plate is arranged on the mouth edge of the. The main body 10 is supported by legs (not shown) arranged on the bottom surface.

  A partition frame 20 in which a vertical frame 21 and a horizontal frame 22 are assembled in a cross shape is attached to the front opening 11 of the main body 10, thereby forming a total of four entrances 12 in the vertical and horizontal directions. As shown in FIG. 3, the vertical frame 21 and the horizontal frame 22 constituting the partition frame 20 are formed in a rectangular tube shape by assembling an exterior frame 25 made of a magnetic metal plate and an interior frame 26 made of a synthetic resin. An outer shell 24 is formed, and the outer shell 24 is a heat insulating structure filled with a heat insulating material 27 made of a foamed resin.

  A pair of left and right heat insulating doors 30 are mounted on the front and rear entrances 12 formed as described above in the front opening 11 of the main body 10 so as to be openable and closable. Each heat insulating door 30 has a structure in which a heat insulating material 32 made of a foamed resin is also foam-filled in an outer shell 31 having a front view shape formed of, for example, a synthetic resin material.

The heat insulating doors 30 that make a pair on the left and right are supported by hinges 14 at the upper and lower ends of the outer vertical edges, respectively, and can swing open and close around the outer vertical edges. A groove-like handle 33 is formed on the upper surface of each heat insulating door 30 so as to be recessed.
In addition, a magnet packing 34 is attached to the peripheral edge on the back side of the heat insulating door 30, and when the door is closed, the magnet packing 34 is attracted to the edge of the corresponding entrance 12 to seal the entrance 12.

The interior of the main body 10 is a storage chamber 15, and although not shown, an evaporator and a cooling fan are provided in the storage chamber 15, while a compressor, a condenser, and the like are provided on the upper surface of the main body 10. The refrigeration apparatus is installed, the refrigeration apparatus and the evaporator are circulated and connected by a refrigerant pipe, and a known refrigeration circuit is configured.
The cooling operation is performed by driving a refrigeration apparatus (compressor) and a cooling fan, and the cool air generated in the vicinity of the evaporator is circulated and circulated by the cooling fan, thereby cooling the interior of the storage chamber 15. It is like that.

Now, in the present embodiment, the device is devised in the shape of the end face 35 that abuts each other when both the heat insulating doors 30 in the left and right heat insulating doors 30 are closed.
That is, as shown in detail in FIG. 3, the end surfaces 35 of both heat insulating doors 30 are formed as curved surfaces in which the distance between both end surfaces 35 gradually decreases from the inner edge to the outer edge. In addition, the protruding ends 35A at the end edges on the outside of the warehouse are close to each other and are substantially closed.

As a result, when both heat insulating doors 30 are closed, a vertical ventilation passage 37 having a flat cross-sectional shape extending deeply is opened up and down between both end faces 35 and the vertical frame 21 of the partition frame 20. Will be formed.
Such a ventilation path 37 is formed between the end faces 35 of the pair of heat insulating doors 30 at the upper and lower stages, and the upper and lower ventilation paths 37 are arranged in alignment.

Then, the effect | action of this embodiment is demonstrated.
During the operation of the refrigerator, the partition frame 20 is also cooled as the inside of the storage chamber 15 is cooled, and at this time, the air in the two ventilation paths 37 is gradually cooled by being cooled by the cold heat from the vertical frame 21, Along with this, the inside of the two air passages 37 inclines to a negative pressure from the upper side, thereby causing a convection phenomenon in which relatively high temperature outside air flows into the air passage 37 from the upper end opening 38 (see the arrow in FIG. 2).
In other words, the relatively high temperature outside air flows down sequentially through the two air passages 37, and the outside air itself also circulates in combination with the temperature rise of the outer surface 21A of the vertical frame 21. Therefore, condensation on the same surface 21A is prevented.
For this reason, at least the vertical frame 21 in the partition frame 20 can prevent dew condensation without a dew condensation prevention heater, so that the manufacturing cost and the running cost can be reduced.

<Embodiment 2>
FIG. 4 shows Embodiment 2 of the present invention. In the second embodiment, the blower fan 40 is provided at a position near the front edge of the upper surface of the main body 10 and at a central position in the lateral width direction. The blower fan 40 has a front side as a blowing side. In addition, a duct 45 that introduces air blown from the blower fan 40 and guides the flow toward the upper end opening 38 of the upper ventilation path 37 is provided in front of the blower fan 40 via a bracket (not shown). It is arranged.

  In the second embodiment, when the blower fan 40 is driven, a relatively high temperature outside air is drawn from the rear side as compared with the inside of the storage chamber 15 and blown forward, and the blown outside air passes through the duct 45 to the upper end. It is forcibly driven from the opening 38 to both the air passages 37, and the dew condensation prevention to the outer surface 21A of the vertical frame 21 is more reliably achieved. Since the driving of the blower fan 40 is sufficient even at a low speed, the power consumption can be reduced as compared with the case where the heater is provided with a dew condensation prevention heater. That is, it is possible to more reliably prevent condensation in the vertical frame 21 while suppressing an increase in running cost.

<Embodiment 3>
FIG. 5 shows Embodiment 3 of the present invention. In the third embodiment, when the refrigeration apparatus is installed on the upper surface of the main body 10, the condenser 50 is installed at the center in the lateral width direction, while the condenser 50 is cooled in front of the condenser 50. A condenser fan 51 is installed. When the condenser fan 51 is driven at the time of driving the refrigeration apparatus, the condenser 50 is cooled by heat exchange while the outside air is sucked from behind the condenser 50 and passes through the condenser 50, and is used for cooling. It functions to blow out the exhaust heat afterwards.

In the same manner as in the second embodiment, the air blown from the condenser fan 51 is introduced into the front of the condenser fan 51, and the duct 45 guides the flow toward the upper end opening 38 of the upper ventilation path 37. Is arranged.
According to the third embodiment, exhaust heat after being used for cooling the condenser 50 is driven into the air passage 37, so that the prevention of condensation on the outer surface 21 </ b> A of the vertical frame 21 is more reliably achieved. Since the condenser fan 51 essential for the refrigeration apparatus is used, an increase in manufacturing cost can be suppressed.

<Embodiment 4>
In the fourth embodiment shown in FIG. 6, a change is made to the formation form of the air passage 37A. That is, the end surfaces 61 of the heat insulating doors 60 that are paired on the left and right sides are opposed to each other as linear taper surfaces in which the distance between the both end surfaces 61 gradually decreases from the inner edge to the outer edge. The projecting ends 61 </ b> A at the outer edges of the storage are formed close to each other and are substantially closed. As a result, when both heat insulating doors 60 are closed, the vertical ventilation path 37 </ b> A having a substantially mountain-shaped flat cross-sectional shape extending between the both end surfaces 61 and the vertical frame 21 of the partition frame 20 is vertically moved. It becomes the form formed by opening.
Other structures are the same as those of the first embodiment, and the same effects as those of the first embodiment can be obtained.

<Embodiment 5>
As for providing the handle 33A on the heat insulating door 30, instead of providing the groove-shaped handle 33 on the upper surface exemplified in the first embodiment, as shown in FIG. For example, each corner portion gathered at the center of each heat insulating door 30 may be retrofitted.

<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) The form of the air passage 37A shown in the fourth embodiment can be similarly applied to the refrigerators exemplified in the second and third embodiments.
(2) The arrangement structure of the heat insulating door handle 33A shown in the fifth embodiment can be similarly applied to the refrigerators exemplified in the second and third embodiments. Moreover, it can apply similarly to the heat insulation door 60 of the shape illustrated in Embodiment 4.

(3) In the above embodiment, a four-door type in which a pair of left and right heat insulating doors are provided over two upper and lower stages is illustrated, but a two-door type with only one stage, and conversely over three or more stages. It can also be applied to those provided. In particular, in the case of the two-door type, only the vertical frame is sufficient for the partition frame, so that a dew condensation prevention heater for the partition frame can be completely eliminated.
(4) The present invention is not limited to the refrigerators exemplified in the above embodiment, and can be widely applied to all cooling storages such as freezers and refrigerators.

  DESCRIPTION OF SYMBOLS 10 ... Refrigerator main body (storage main body) 11 ... Front opening 12 ... Entrance / exit 14 ... Hinge 20 ... Partition frame 21 ... Vertical frame (vertical partition frame) 30 ... Thermal insulation door 35 ... End surface 35A ... Projection end 37, 37A ... Ventilation Path 38 ... upper end opening (of ventilation path 37) 40 ... Blower fan (fan) 45 ... Duct 50 ... Condenser 51 ... Condenser fan 60 ... Thermal insulation door 61 ... End face

Claims (3)

It has a storage body consisting of a heat-insulating box with an opening on the front, and a vertical partition frame is provided at the front opening of the storage body to form a left and right entrance and a pair of heat insulation doors at both entrances. In a cooling storage cabinet that can be opened and closed with a double door opening,
The end surfaces that face each other when the two heat insulating doors are closed are formed in such a manner that the distance between the both end surfaces gradually decreases from the inner side to the outer side of the store, and when the doors are closed, the both end surfaces and the partition frame are formed. A cooling storage, wherein a vertical air passage is formed between the two. 2. The cooling according to claim 1, wherein a fan is provided on the upper surface of the storage body, and a duct for guiding the air blown from the fan toward the upper end opening of the ventilation path is provided. Storage. The cooling storage according to claim 2, wherein the fan is a condenser fan that sucks outside air and applies it to the condenser and functions to blow out exhaust heat after the condenser is cooled.

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