JP2007183061A - Showcase - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a showcase capable of preventing drained water flown down from an upper evaporator from freezing by cold air of a lower evaporator. <P>SOLUTION: The upper evaporator 3 is provided so as to form declines respectively in a longitudinal direction and a width direction of a showcase body 1, and is arranged so as to deviate in a decline direction with respect to the lower evaporator 3. Therefore, the drained water flown down from one end side of the upper evaporator 3 does not fall in a periphery of the lower evaporator 3, and the drained water is securely prevented from freezing by the cold air of the lower evaporator 3. Thus, distribution of air in a ventilation passage 2 is not interfered by the frozen drained water, and degradation of cooling capacity of the lower evaporator 3 is effectively prevented. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a showcase used in, for example, a convenience store.

In general, this type of showcase includes a showcase body having an upper surface or an open front surface, a ventilation path formed along the inner surface of the showcase body, and a pair of evaporators disposed one above the other in the ventilation path. And an air blower arranged in the ventilation path, and the inside of the showcase body is cooled by discharging air cooled by at least one evaporator in the ventilation path along the opening of the showcase body. (See, for example, Patent Document 1).
JP 2003-148854 A

  By the way, in the showcase, the drain water is allowed to flow down from one end side of the evaporator by arranging the evaporators at an inclination, but the drain water of the upper evaporator is in the vicinity of the lower evaporator. Since the water flows down, the cold water in the lower evaporator freezes and the circulation of the air is hindered, resulting in a problem that the cooling capacity of the lower evaporator is lowered.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a showcase in which drain water flowing down from an upper evaporator is not frozen by the cold air of the lower evaporator. is there.

  In order to achieve the above-mentioned object, the present invention comprises a ventilation path formed along the inner surface of the showcase body, and a pair of evaporators arranged vertically in the ventilation path, and at least one of the ventilation paths In the showcase in which the inside of the showcase body is cooled by the air cooled by the evaporator, the upper evaporator is provided so as to incline downward in a predetermined direction, and in the downward inclination direction with respect to the lower evaporator. It arranges so that it may shift.

  Accordingly, the upper evaporator is provided so as to have a downward inclination in a predetermined direction, and is disposed so as to be shifted in the downward inclination direction with respect to the lower evaporator. The drain water that flows down does not fall in the vicinity of the lower evaporator.

  According to the showcase of the present invention, the drain water flowing down from one end side of the upper evaporator does not fall in the vicinity of the lower evaporator, so that the freezing of the drain water by the cool air of the lower evaporator is surely prevented. can do. Thereby, the circulation of the air in the ventilation path is not hindered by freezing of the drain water, and it is possible to effectively prevent the cooling capacity of the lower evaporator from being lowered.

  1 to 6 show an embodiment of the present invention. FIG. 1 is an overall perspective view of a showcase, FIG. 2 is a side sectional view thereof, and FIG. 3 is a sectional view taken along line AA in FIG. 4 is a cross-sectional view in the direction of arrow BB in FIG. 2, FIG. 5 is an enlarged side view of the main part of the showcase, and FIG. 6 is an enlarged front view of the main part.

  The showcase is arranged vertically above and below the showcase body 1 having an open upper surface, a ventilation path 2 formed along the front side, the bottom side and the back side of the showcase body 1. A pair of evaporators 3 and a pair of blowers 4 arranged in the ventilation path 2 are provided.

  The showcase body 1 has a front surface, a back surface, both side surfaces, and a bottom surface surrounded by a heat insulating wall 1a, and a machine room 1b is provided at a lower portion thereof. A drain hole 1c is provided in the bottom surface of the heat insulating wall 1a, and the drain hole 1c is connected to a drain tank (not shown) in the machine room 1b. In addition, an inner surface plate 1d is provided on the front side, the bottom surface side, and the rear side in the showcase body 1, and a product (not shown) is stored inside the inner surface plate 1d.

  The ventilation path 2 is formed between the inner surface plate 1d of the showcase body 1 and the heat insulation wall 1a, and an air discharge port 2a that opens toward the front is provided at the upper end of the ventilation path 2 on the back side. An air suction port 2b that opens rearward is provided at the upper end of the ventilation path 2. Further, the inside of the ventilation path 2 is divided into an inner ventilation path 2 and an outer ventilation path 2 by partition plates 2c provided on the front side, the bottom side, and the back side.

  Each evaporator 3 is connected to a compressor 5, a condenser 6, and an expansion mechanism (not shown) in the machine room 1 b so that the refrigerant flows through the compressor 5. Each evaporator 3 is provided in the inner ventilation path 2 and the outer ventilation path 2, respectively, and is disposed on the back side of the center of the showcase body 1 in the front-rear direction. In this case, each evaporator 3 is provided so as to have a downward slope toward the front, and the upper evaporator 3 is arranged so as to be shifted forward by a distance L1 from the lower evaporator 3. Further, the upper evaporator 3 is provided so as to be inclined downward toward one side in the width direction of the showcase body 1 and is disposed so as to be shifted to the one side in the width direction by a distance L2 from the lower evaporator 3. . Further, a heat insulating plate 7 is provided between the evaporators 3, and drain holes 8 are provided in the heat insulating plate 7 and the partition plate 2 c.

  A plurality of each blower 4 is provided in each of the inner ventilation path 2 and the outer ventilation path 2 so as to circulate the air in the inner ventilation path 2 and the air in the outer ventilation path 2 in opposite directions. Yes.

  In the showcase configured as described above, the low-temperature refrigerant is circulated to one or both of the evaporators 3, whereby the air sucked into the ventilation path 2 from the air suction port 2 b is cooled by the evaporator 3. By discharging from the air discharge port 2 a of the ventilation path 2, an air curtain is formed at the upper surface opening of the showcase body 1.

  Here, when performing defrosting of the evaporator 3, a low-temperature refrigerant is circulated through one evaporator 3 and a high-temperature refrigerant is circulated through the other evaporator 3, so that one evaporator 3 can show the main body of the showcase. While the inside of 1 is cooled, the other evaporator 3 is defrosted by the high-temperature refrigerant. At that time, since each evaporator 3 is insulated by the heat insulating plate 7, even when the other evaporator 3 is defrosted by the high-temperature refrigerant, it is not affected by the temperature difference.

  Further, in the showcase, when drain water flows down from the upper evaporator 3 such as when the upper evaporator 3 is condensed during cooling or when frost is melted during defrosting, as shown in FIGS. As shown by the solid line arrow, the drain water of the upper evaporator 3 falls from the drain hole 8 of the inner ventilation path 2 to the outer ventilation path 2 and is discharged from the drain hole 1c of the outer ventilation path 2 to a drain tank (not shown). Is done. At that time, the upper evaporator 3 is provided so as to have a downward inclination toward the front, and is disposed so as to be shifted by the distances L1 and L2 in the downward inclination direction with respect to the lower evaporator 3, respectively. The drain water flowing down from one end side of the upper evaporator 3 does not fall in the vicinity of the lower evaporator 3.

  Thus, according to the showcase of the present embodiment, the upper evaporator 3 is provided so as to be inclined downward in a predetermined direction, and is arranged so as to be shifted in the downward inclined direction with respect to the lower evaporator 3. The drain water flowing down from one end side of the upper evaporator 3 does not fall in the vicinity of the lower evaporator 3, and the freezing of the drain water due to the cold air of the lower evaporator 3 can be reliably prevented. Thereby, the circulation of the air in the ventilation path 2 is not hindered by freezing of the drain water, and it is possible to effectively prevent the cooling capacity of the lower evaporator 3 from being lowered.

  Further, since the upper evaporator 3 is inclined in the front-rear direction and the width direction of the showcase body 1, the drain water of the upper evaporator 3 is collected in one place as shown by the solid line arrows in FIG. It can drain efficiently. In this case, since the upper evaporator 3 is arranged so as to be displaced in the direction perpendicular to the air flow direction (the width direction of the showcase body 1) with respect to the lower evaporator 3, the drain water of the upper evaporator 3 is disposed. Can be drained to a position outside the air outflow path of the lower evaporator 3, and freezing of drain water by the lower evaporator 3 can be more reliably prevented.

  Further, since the heat insulating plate 7 is provided between the respective evaporators 3, even when the other evaporator 3 is defrosted by the high-temperature refrigerant, the respective evaporators 3 are not affected by the temperature difference between each other. There is an advantage that the cooling capacity of the other evaporator 3 and the defrosting efficiency of the other evaporator 3 are not lowered.

  In addition, in the said embodiment, although the flat type open showcase which opened the upper surface was shown, if an evaporator is provided in two steps up and down, it has a door in the open showcase which opened the front, and the opening part. The present invention can also be applied to a showcase.

The whole perspective view of the showcase which shows one embodiment of the present invention Side cross-sectional view of showcase AA arrow direction sectional view of FIG. BB sectional view taken along line BB in FIG. Enlarged side view of the main part of the showcase Enlarged front view of the main part of the showcase

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Showcase main body, 2 ... Ventilation path, 3 ... Evaporator, 7 ... Thermal insulation board.

Claims (3)

The showcase body includes a ventilation path formed along the inner surface of the showcase body and a pair of evaporators disposed above and below each other in the ventilation path, and is cooled by at least one evaporator in the ventilation path. In a showcase designed to cool the inside,
A showcase in which an upper evaporator is provided so as to be inclined downward in a predetermined direction, and is disposed so as to be shifted in a downward inclination direction with respect to the lower evaporator. The showcase according to claim 1, wherein the upper evaporator is inclined in the front-rear direction and the width direction of the showcase body. The showcase according to claim 1, wherein a heat insulating plate is provided between the evaporators.

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