JP2004011999A - Open showcase - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerating open showcase effectively aligning(enhancing the speed in a storage inside and slowing in its outside) a cooling air curtain from a cooling air outlet in a case of using a flat honeycomb aligner body with a rectangular side cross section for the cooling air outlet in the front end of a ceiling. <P>SOLUTION: This open showcase is provided with a thermal insulation wall forming a body 11, a storage chamber 13 provided inside the body, a cooling air duct 14 provided between the thermal insulation wall and the storage chamber, and the downward cooling air outlet 17 connected to the cooling air duct 14, opened to the upper-part front end of the storage chamber 13, and being long in the body width direction, and cools the storage chamber by the cooling air curtain blown out from the cooling air outlet 17. The cooling air outlet 17 is provided with the flat honeycomb aligner body 18 and an aligning plate 20 aligning the cooling air flow passing through the cooling air duct so as to feed the cooling air much more in the storage inside of the flat honeycomb aligner body 18 than that in the storage outside. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an open showcase provided with a storage room for storing and displaying refrigerated goods, and in particular, even when a flat honeycomb rectifier having a rectangular side cross section is used for a cool air outlet at a front end of a ceiling, a cool air outlet is provided. The present invention relates to a refrigerated open showcase that can effectively achieve rectification of cold air curtains from inside (to speed up the inside of the refrigerator and slow down the outside of the refrigerator).
[0002]
[Prior art]
Conventionally, in stores such as supermarkets and convenience stores, openings for taking out products are provided on the front of the main body case for displaying refrigerated products such as refrigerated foods and fresh foods, and the openings are covered with a cool air curtain. A refrigerated open showcase that keeps items displayed in the refrigerator cool is widely used.
[0003]
FIG. 4 shows the structure of a cool air outlet of this type of open showcase. A cool air duct 33 is formed between a ceiling panel 31 formed of a heat insulating wall and an internal panel 32 forming a storage room. At the tip of the ceiling of the duct 33, a cool air outlet 34 that opens downward is formed over the entire case width direction. A trapezoidal honeycomb rectifier 35 having a trapezoidal side cross section is fitted into the downwardly directed cool air outlet 34, and the cool air that has passed through the cool air duct 33 passes through the cool air passage of the trapezoidal honeycomb rectifier 35. By being blown downward from the cool air outlet 34, a cool air curtain is formed at the front opening of the showcase to keep the inside of the refrigerator cool.
In other words, the honeycomb rectifier provided in the cool air outlet 34 increases the wind speed on the inside of the storage (rear side of the case), and the wind speed decreases toward the outside of the storage (front of the case). Is a trapezoidal honeycomb rectifier 35 having a trapezoidal side cross section formed with a long cold air passage. When the cool air is blown out so as to increase the wind speed inside the refrigerator and to slow down toward the outside of the refrigerator, warm air outside the refrigerator is obtained. The cool air curtain is rectified without entraining the air inside the refrigerator, and there is no possibility that the outside warm air enters the refrigerator and hinders the cooling performance.
[0004]
[Problems to be solved by the invention]
However, the trapezoidal honeycomb rectifier has a disadvantage in that the cutting process of the honeycomb surface requires much time, so that it has to be expensive.
In order to reduce the cost, a flat honeycomb rectifier with a rectangular side cross section may be used, but simply using a flat honeycomb rectifier does not make a difference in the wind speed between the inside and outside of the warehouse, and the air curtain is rectified. (Increase the wind speed inside the compartment and slow down the outside of the compartment), the cooling performance is significantly inferior to that of the trapezoidal honeycomb rectifier.
[0005]
The present invention has been made in view of the above points, and an object of the present invention is to fix a flat honeycomb straightening body having a rectangular side cross section at a cool air outlet of a case body ceiling. It is an object of the present invention to provide an open showcase in which an air curtain can be reliably formed by cold air blown downward through a fluid cool air passage.
[0006]
[Means for Solving the Problems]
In order to solve the above-described problems, in the open showcase of the present invention, a heat insulating wall forming a main body, a storage room provided in the main body, and a heat insulating wall provided between the heat insulating wall and the storage room. A cold air duct, and a downwardly extending cool air outlet extending in the width direction of the main body, which communicates with the cool air duct and opens at the upper front end of the storage chamber; In the open showcase that keeps cool, the cool air flow passing through the cool air duct is higher than the straightening body attached to the cool air outlet, particularly the flat honeycomb straightening body having a rectangular side cross section, from the outside of the refrigerator. It is characterized in that a rectifying plate is provided to feed more inside of the refrigerator.
[0007]
The straightening plate is composed of a fixed piece formed by bending one side in the longitudinal direction of a horizontally long rectangular flat plate having substantially the same width as the cool air outlet, and the remaining straightening pieces. The rectifying piece is fixed to the ceiling surface of the upper heat insulating wall, and the rectifying piece projects from the ceiling surface toward the rectifying body over the entire width direction of the cool air outlet, and the lower end of the projecting rectifying piece and the rectifying body are fixed. A predetermined interval is provided between the upper end of the lens and the upper end of the lens.
Furthermore, the rectifying plate is such that a rectifying piece protruding from the ceiling surface is provided to be inclined from the inside of the refrigerator to the outside of the refrigerator, and a width in the front-rear direction in the cool air duct partitioned by the rectifying piece is: The inside of the flat honeycomb straightening body attached to the cool air outlet is formed wider than the outside of the cold storage, and the straightening piece of the straightening plate is formed with a plurality of ventilation holes. And formed on the lower side of the rectifying piece.
[0008]
According to the present invention, by adopting the above configuration, even when a flat honeycomb rectifier is attached to the cool air outlet, the flow rate of the cool air flowing through the cool air passage inside the storage of the rectifier by the action of the rectifier plate provided above the flat honeycomb rectifier. And the flow rate of the cool air flowing through the cool air passage outside the refrigerator is reduced, so that the cool air blown downward from the outlet can form a smooth air curtain flow. In other words, the cold airflow that flows toward the outlet through the cool air duct hits the rectifying piece protruding from the ceiling surface toward the rectifier over the entire width direction of the cool air outlet. More cool air flows into the cool air flow path, and the flow velocity of the cool air flowing in the straightening body cool air passage inside the refrigerator is faster than the flow velocity of the cool air flowing outside the refrigerator. As a result, even if the flat honeycomb rectifier is attached to the cool air outlet, rectification of the air curtain can be achieved.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
1 is a sectional side view of a refrigerated open showcase to which the present invention is applied, FIG. 2 is a sectional side view showing a straightening plate mounting structure near a cool air outlet at a front end of a ceiling portion, and FIG. 3 is a perspective view of the straightening plate. .
[0010]
As shown in FIG. 1, a refrigerated open showcase 10 of the present invention includes a case body 11 formed of a heat insulating wall formed in a box shape with a front opening, and a front surface defined by an inner panel 12 in the case body 11. And a storage chamber 13 having an opening. A cool air duct 14 for circulating cool air is provided between the case main body 11 formed of the heat insulating wall and the inner panel 12 forming the storage room inside the case main body 11.
[0011]
A cooler 15 and a circulation fan 16 are disposed in the cool air duct 14, and a cool air outlet 17 that opens downward to communicate with the cool air duct 14 is provided at the front end of the case ceiling. Have been. The cool air outlet 17 is formed to be longer in the horizontal direction in accordance with the width of the case body, and a honeycomb rectifier 18 for fitting a cool air to the blower cool air is fitted therein. .
[0012]
The honeycomb rectifier 18 has a large number of vertically elongated cold air passages 18a, and may be a conventional flat rectifier having a rectangular side cross section that has been conventionally used. In the case of a flat honeycomb rectifier, the cutting of the honeycomb surface is easier than that of a trapezoidal honeycomb rectifier having a trapezoidal side cross section, and the manufacturing cost can be reduced. As the material, a thermoplastic resin such as polyvinyl chloride is used, but if necessary, a material mixed with an antibacterial agent such as silica gel or silver may be used. Further, it may be formed by coating a paper material with a thermoplastic resin such as polyvinyl chloride mixed with an antibacterial agent such as silica gel or silver. Formally, the cold air passage 18a may be formed by alternately stacking the flat sheets and the corrugated sheets, or alternatively, the flat sheets and a large number of juxtaposed circular or elliptical cylinders may be alternately stacked. Alternatively, the cooling air passage 18a may be formed. These rectifiers are detachably attached to the cool air outlet 17 using clips or the like.
In the storage room 13 for refrigerated goods, a plurality of goods display shelves 13a and the like having the rear end hooked to the inner panel 12 are provided, and the refrigerated goods are displayed here.
[0013]
This showcase draws in air from a suction port 19 provided at the front end of the lower part of the case by the action of a circulation fan 16 in the cool air duct 14 and exchanges heat when passing the sucked air through a cooler 15 in the cool air duct. The cooling air (cool air) is blown downward as a cool air curtain from a cool air outlet 17 at the front end of the ceiling portion communicating with the cool air duct 14 to cool the inside of the refrigerator, and then the suction opening at the lower front end again. A cool air circulation structure is adopted in which the air is sucked into the cool air duct 14 from 19 and circulated.
[0014]
The gist of the present invention is that, as shown in detail in FIG. 2, the cool air passing through the cool air duct 14 is placed above the flat honeycomb rectifier 18 attached to the cool air outlet 17 inside the refrigerator than outside the rectifier. That is, the rectifying plate 20 for feeding more is provided. As a result, even if an inexpensive flat honeycomb rectifier is used instead of using a trapezoidal honeycomb rectifier that is relatively time-consuming to cut the honeycomb surface and easy to manufacture, the same cool air as that using a trapezoidal honeycomb rectifier can be used. The air curtain can be rectified.
[0015]
As shown in FIG. 2 and FIG. 3, the current plate 20 is formed by bending one side in the longitudinal direction of a horizontally long rectangular flat plate having substantially the same width as the cool air outlet 17 to form a fixed piece 21 and the other side. Are fixed to the heat-insulating wall ceiling surface 11a (the case body) above the honeycomb flow straightening body, and the remaining flow straightening pieces 22 are spread over the entire width direction of the cool air outlet 17. It protrudes from the ceiling surface 11a toward the honeycomb rectifier 18. Further, the protruding rectifying piece 22 is provided so as to be inclined from the inside of the refrigerator to the outside of the refrigerator as it goes downward from the fixed ceiling side, thereby facilitating the flow of cool air. In addition, by providing a predetermined interval between the lower end 22a of the protruding rectifying piece 22 and the upper end 18b of the rectifying body 18, the cool air can also flow outside the storage. At this time, the width in the front-rear direction of the cool air duct 14 partitioned by the flow straightening pieces 22 is formed such that the inside of the honeycomb straightening body 18 attached to the cold air outlet 17 is formed wider than the outside of the honeycomb. Cold air can be blown out using the cold air passage 18a as widely as possible. If the inside of the refrigerator is too narrow, the amount of cool air flowing into the cool air passage 18a of the honeycomb rectifier outside the refrigerator becomes too small, and it is difficult to form a necessary cool air curtain.
[0016]
The rectifying plate 20 can use a rectifying piece 22 protruding from the ceiling surface 11a in a plate shape. However, a plurality of ventilation holes 23 are formed in the rectifying piece 22, and a part of the cool air is removed therefrom. The honeycomb rectifier 18 may be directed to the outside of the warehouse. In this case, it is sufficient that the ventilation hole 23 is formed below the rectifying piece 22 as shown in FIG.
[0017]
As described above, according to the present embodiment, even when the flat honeycomb rectifier 18 having a rectangular side cross section is used for the cool air outlet 17, only one rectifying plate 20 is mounted above the honeycomb rectifier 18. Since the blowing speed inside the refrigerator can be set to be high and the blowing speed outside the refrigerator can be set to be low, a sufficient rectifying effect of the cool air curtain can be obtained with the addition of the simple structure of the rectifying plate 20.
[0018]
【The invention's effect】
As described above, according to the open showcase of the present invention, since the straightening plate is mounted above the cool air outlet, even when a flat honeycomb straightening body having a rectangular cross section is mounted on the cool air outlet, the straightening plate is not mounted. By the action, it is possible to achieve a rectification of the cool air curtain in which the blowing speed of the blown-out cold air inside the cold storage is increased and the blowing speed outside the cold storage is reduced. Therefore, it is not necessary to use a trapezoidal honeycomb rectifier which is troublesome and expensive to manufacture for cutting the honeycomb surface.
[Brief description of the drawings]
FIG. 1 is a sectional side view of a refrigerated open showcase to which the present invention is applied.
FIG. 2 is an enlarged cross-sectional side view showing a straightening plate mounting structure in the vicinity of a cool air outlet at a front end of a ceiling.
FIG. 3 is a perspective view of the current plate.
FIG. 4 is a cross-sectional side view of a cool air outlet of a conventional refrigerated open showcase.
[Explanation of symbols]
Reference Signs List 10 Refrigerated open showcase 11 Case main body 11a Ceiling surface 12 Internal panel 13 Storage room 13a Product display shelf 14 Cool air duct 15 Cooler 16 Circulation fan 17 Cold air outlet 18 Flat honeycomb rectifier 18a Rectifier cold air passage 18b Upper end of rectifier 19 Suction port 20 Rectifier plate 21 Fixed piece 22 Rectifier piece 22a Lower end 23 of rectifier piece 23 Vent

Claims (6)

A heat insulating wall forming a main body, a storage room provided in the main body, a cool air duct provided between the heat insulating wall and the storage room, and an upper front end of the storage room communicating with the cold air duct An open showcase having a downwardly extending cool air outlet extending in the width direction of the main body and opening the main body, and keeping the storage room cool by an air curtain of cool air blown out from the cool air outlet, a side cross section attached to the cool air outlet An open showcase provided with a rectifying plate above a rectangular flat honeycomb rectifier for feeding a flow of cool air passing through the cool air duct into the inside of the rectifier body more than the outside of the rectifier body. . The rectifying plate includes a fixed piece formed by bending one side in the longitudinal direction of a horizontally long rectangular flat plate having substantially the same width as the cool air outlet, and the remaining rectifying pieces, and the fixed piece is provided above the rectifying body. The rectifying piece is fixed to the heat-insulating wall ceiling surface, protrudes from the ceiling surface toward the rectifier body over the entire width direction of the cool air outlet, and the lower end of the protruded rectifying piece and the rectifier body 2. The open showcase according to claim 1, wherein a predetermined interval is provided between the open showcase and the upper end. The open showcase according to claim 2, wherein the rectifying plate is provided with a rectifying piece protruding from the ceiling surface so as to be inclined from the inside of the refrigerator to the outside of the refrigerator. The width in the front-rear direction in the cool air duct partitioned by the rectifying piece is formed such that the inside of the flat honeycomb rectifier attached to the cool air outlet is wider than the outside of the cold honeycomb rectifier. Open showcase. 5. The open showcase according to claim 2, wherein the rectifying plate has a plurality of ventilation holes formed in a rectifying piece protruding from a ceiling surface. 6. The open showcase according to claim 5, wherein the ventilation holes of the rectifying piece are formed mainly on a lower side of the rectifying piece.

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