JP5659579B2 - Cold air circulation open showcase - Google Patents

Description

  The present invention forms a cool air curtain on the front surface of the front of the main body case with the product display shelves lined up and down in the cabinet, and also displays the product at each stage from the back side of the cabinet. The present invention relates to a cold air circulation type open showcase that keeps displayed products cold by blowing cold air toward the lower surface of a shelf.

  As mentioned above, an air curtain is formed on the front side of the main body case with the front open, and cold air is circulated from the back side of the case toward the product display shelf to keep the displayed products cool. A type open showcase is known (see, for example, Patent Document 1).

  Next, a conventional configuration of the showcase is shown in FIG. In the figure, 1 is an open front body case that becomes a heat-insulating housing, 2 is a cold air circulation duct defined between the outer box and inner box of the body case 1, 3 is a rear panel of the inner box, and 4 is cooling (Refrigerator evaporator), 5 is a cool air circulation fan, 6 is an air curtain outlet, 7 is a suction port (suction grill), 8 is a product display shelf arranged in the upper and lower stages, The rear panel 3 of the inner box has ventilation holes 3a (for example, punching holes) drilled corresponding to the arrangement positions of the product display shelves 8 at the upper and lower stages.

On the other hand, as shown in FIGS. 4 and 5, the product display shelf 8 has a longitudinal direction of the shelf (horizontal width direction) as a reinforcing beam on the lower surface of the shelf plate 8a installed between the pair of left and right shelf brackets 8f. ) 8b in cross section V-shaped shelf reinforcing plate (steel plate bent into a V channel shape) 8b is welded, fluorescent lamp 9 for interior lighting is arranged on the front wall via a clip 9a ing. Reference numeral 8c denotes a tag molding provided at the front end of the shelf board 8a.

  The cool operation of the showcase is described in detail in Patent Document 1, and during the cool operation, as shown by the dotted line in FIG. 3, the front side of the main body case 1 has a suction port 7 on the bottom side from the blower port 6 on the bottom side. A cold air curtain A is formed toward In addition, on the lower surface side of the product display shelves 8 arranged in the upper and lower stages, the cold air flow B is blown out from the cold air circulation duct 2 through the ventilation holes 3 a formed in the back panel 3 of the inner box 3. Keep the items on top in the cold.

Japanese Utility Model Publication No. 2-58679

By the way, in the showcase employing the product display shelf 8 (see FIGS. 4 and 5) in which the shelf reinforcing plate 8b having the V-shaped cross section is provided on the lower surface of the shelf plate 8a as described above, the product is directed toward the lower surface of the shelf plate 8a. Then, the cold air flow B (see FIG. 3) blown into the chamber through the ventilation hole 3a of the rear panel 3 hits the rear wall of the shelf reinforcing plate 8b having a V-shaped cross section as shown in the figure and changes its direction downward. It has been confirmed from the simulation analysis of the wind speed distribution that a part of the vortex is formed so as to return to the inner side of the chamber. Note that such reversal of the cold air flow B appears prominently in the product display shelves arranged on the upper side of the cabinet that has a short shelf depth and is installed in a forward tilted posture.

  Under the wind direction distribution as described above, since the cold air flow B blown into the cabinet from the back does not reach the tip of the commodity display shelf 8, the air warmed by the heat generated by the fluorescent lamp 9 stays in this portion. As a result, there is a problem in that the coolness of the products displayed in the front row of the product display shelf 8 is lowered due to the thermal influence and the product temperature is increased.

  In addition, in order to guide the cold air current blown from the cold air circulation duct 2 into the cabinet through the ventilation holes on the back panel to the vicinity of the front end of the product display shelf and discharge it into the cabinet, the wind guide duct is installed along the lower surface of the product display shelf. There is also a known showcase (see Japanese Patent Application Laid-Open No. 10-300315). In this configuration, however, there is a cost associated with the addition of a wind guide duct, and this wind guide duct is arranged at the front end of the lower surface of the product display shelf. Since the fluorescent lamp is laid around the fluorescent lamp, heat retention due to the heat generated by the fluorescent lamp cannot be positively excluded.

  The present invention has been made in view of the above points, and has a V-shaped cross-section laid on the lower surface side of the shelf board of the product display shelf without additional equipment such as the air duct described above on the lower surface of the product display shelf. By skillfully utilizing the reinforcing plate, the cold air current blown into the cabinet through the ventilation holes on the back panel is prevented from reversing to the back side of the cabinet, and the fluorescent lamp placed in front of the shelf reinforcing plate is also used. The purpose is to provide an improved open-air-cooled open showcase that eliminates the thermal effect on the front of the shelf due to heat generation and keeps the interior cool evenly and improves cold insulation performance. And

In order to achieve the above-mentioned object, according to the present invention, a cold air curtain is formed on the front surface of the front side of the main body case having an open front side with the product display shelves arranged in the upper and lower stages. It is a cold air circulation type open showcase that keeps the displayed product cold by blowing a cold air flow from the inner back to the lower surface side of the product display shelf. The product display shelf has a cross-section V on the lower surface of the shelf plate as a reinforcing beam for the shelf plate. In the case where a shelf reinforcing plate having a shape is laid along the longitudinal direction of the shelf and a fluorescent lamp is arranged in front of the shelf reinforcing plate, the shelf reinforcing plate having a V-shaped cross section is placed on the front end of the product display shelf whose wall surface is one step below. Bending angle is set so as to face, and the shelf reinforcement that guides the blown cold airflow from the back of the interior to the bottom of the shelf along the rear wall surface of the shelf reinforcement plate and has a V-shaped cross section. Blow out from the back side of the cabinet on the front and rear walls of the plate Some of the cold air was bored guide air hole to guide the wind toward the fluorescent lamp, as well as for channeling cooling air passing through the conductor air hole in the circumferential area of the fluorescent lamp, tag malls at the tip of the commodity display shelf Is installed at the front end of the product display shelf so as to define an air guide passage between the tag mall and the fluorescent light from the air guide hole drilled in the wall of the shelf reinforcement plate. Then, the cold airflow flowing forward is guided toward the wind guide passage at the front end of the product display shelf one step below.

With the above configuration, the following effects can be achieved.
(1) In front of the product display shelf, the cold air flow blown out from the back side of the cabinet hits the rear wall of the shelf reinforcing plate laid on the lower surface side of the product display shelf and prevents the reverse flow from returning to the back side of the cabinet. The area can be effectively kept cool.
(2) Before and after the shelf reinforcing plate, air guide holes are formed in the rear wall surface, and a part of the cold air blown out from the back side in the cabinet is caused to flow through the fluorescent lamp disposed in front of the shelf reinforcing plate. As a result, the heat retention due to the heat generated by the fluorescent lamp is eliminated, and the coolability of the shelf front area of the product display shelf is improved.
(3) A tag mall is provided at the front end of the product display shelf, and a downward wind direction plate is provided at the front end of the product display shelf so as to define an air guide passage between the tag mall and drilled in the wall of the shelf reinforcement plate. Airflow that passed through the fluorescent lamp's peripheral area by guiding the cold airflow that flows forward through the peripheral area of the fluorescent lamp through the airflow guide hole toward the airflow guide passage at the front end of the product display shelf one step below Can prevent the trouble that disturbs the air flow of the air curtain by interfering with the air curtain formed on the front surface of the interior.

BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing of a structure and function of the goods display shelf arrange | positioned in the store of the showcase by the Example of this invention, Comprising: (a) is blown out from the back side in the warehouse toward the lower surface of the goods display shelf arranged in the upper and lower stages. The figure which typically represented the flow of the cold airflow, (b) is the external appearance perspective view of a shelf reinforcement board. It is a structure sectional view of the cold air circulation type open showcase provided with the merchandise display shelf of FIG. It is a structure sectional view of the conventional cold air circulation type open showcase. It is a side view of the conventional goods display shelf arrange | positioned in the showcase storage of FIG. It is a perspective view showing the front part structure of the goods display shelf shown in FIG.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on the examples shown in FIGS. In the drawings of the embodiment, members corresponding to those in FIGS. 3 to 5 are denoted by the same reference numerals and description thereof is omitted.
The cold air circulation type open showcase of the illustrated embodiment is basically the same as the conventional configuration shown in FIG. 3, and at the time of the cold insulation operation, the bottom of the main body case 1 is opened from the ceiling side outlet 6 to the bottom side. A cold air curtain A is blown out toward the suction port 7. In addition, on the lower surface side of the product display shelves 8 arranged in the upper and lower stages, the cold air flow B diverted from the cold air circulation duct 2 is blown out through the ventilation holes 3a formed in the rear panel 3 in the warehouse, The products 10 arranged in the above are kept cold.

On the other hand, with respect to the product display shelf 8 arranged in the upper and lower stages and arranged in the cabinet of the main body case 1, a part of the conventional product display shelf 8 shown in FIGS. 4 and 5 has been changed as follows. . That is,
(1) With respect to the shelf reinforcing plate 8b having a V-shaped cross section laid on the lower surface side of the shelf plate 8a, as shown in FIG. 1 (a), the rear wall surface of the shelf reinforcing plate 8b is arranged at the front end of the product display shelf 8 lined down one step. The V-shaped bending angle is set so as to face (the one-dot chain line shown in the figure is a virtual extension line along the rear wall surface of the shelf reinforcing plate 8b), and the ventilation holes 3a ( The blown cold airflow B is made to flow toward the lower end of the product display shelf 8 toward the front end of the product display shelf 8 that is lined down along the rear wall surface of the shelf reinforcing plate 8b.
(2) Further, on the front and rear wall surfaces of the shelf reinforcing plate 8b having a V-shaped cross section, a wind guide hole for guiding a part of the cold airflow B toward the fluorescent lamp 9 disposed in front of the shelf reinforcing plate 8b. Are drilled along the longitudinal direction of the shelf reinforcing plate, and the air guide holes are shown in FIG. Here, 8b-1 is a cold air introduction hole formed on the upper side of the rear wall surface of the shelf reinforcing plate 8b, and 8b-2 and 8b-3 are formed on the upper and lower sides of the front wall surface of the shelf reinforcing plate 8b, respectively. Cold air discharge holes (top) and (bottom).
(3) Further, a wind direction plate 8d is provided at the front end portion of the product display shelf 8 so as to protrude downward from the front end of the shelf plate 8a toward the front end portion of the product display shelf 8 arranged one step below. In the illustrated embodiment, an air guide passage 8e is defined between the tag mall 8c at the tip of the shelf along the wind direction plate 8d, and flows down from the upper side of the shelf plate 8a via the air guide passage 8e. The incoming cold airflow is guided toward a suction port 7 (see FIG. 2) that opens to the bottom side of the main body case 1.

  With the above configuration, the cold air flow B1 blown to the lower surface side of the commodity display shelf 8 through the ventilation holes 3a formed in the back panel 3 in the refrigerator during the cold insulation operation is the cold main flow B1 as represented by the broken line in FIG. Is guided along the rear wall surface of the V-shaped shelf reinforcing plate 8b so as to be directed toward the front end portion of the lower product display shelf 8. A part of the cold air flow B is diverted from the cold air main flow B1, and passes through the cold air introduction holes 8b-1 and the cold air discharge holes 8b-2 and 8b-3 formed in the front and rear wall surfaces of the shelf reinforcing plate 1b. After the diverted cold airflows B2 and B3 are caused to flow around the fluorescent lamp 9, the airflow flows downward toward the front end of the product display shelf 8 lined down along the wind direction plate 8d provided at the front end of the shelf 1a.

  As a result, the problem that the cold insulation at the front end of the shelf of the product display shelf is deteriorated due to the reversal of the cold air flow B and the retention of heat due to the heat generated by the fluorescent lamp 9 has been solved. The entire interior of the cabinet can be kept cool evenly. Further, by guiding a diverted cold airflow that passes through the peripheral area of the fluorescent lamp 9 and moves forward along the wind direction plate 8d, unnecessary interference with the air curtain formed on the front surface of the interior can be prevented. it can.

DESCRIPTION OF SYMBOLS 1 Main body case 2 Cold air circulation duct 3 Back panel 3a Ventilation hole 4 Cooler 8 Merchandise display shelf 8a Shelf board 8b Shelf reinforcement board 8b-1 Cold air introduction hole 8b-2 Cold air discharge hole (upper)
8b-3 Cold air discharge hole (bottom)
8c Tagmall 8d Wind direction plate 9 Fluorescent lamp 10 Product

Claims (1)

A front air-cooled main body case with product display shelves lined up and down in the cabinet is formed with a cold air curtain on the front of the cabinet, and a cold air flow from the back of the cabinet toward the bottom of the product display shelf This is a cold-air circulation type open showcase that keeps the displayed products cool by blowing out the products, and the product display shelf has a shelf reinforcing plate having a V-shaped cross section along the longitudinal direction of the shelf as a reinforcing beam for the shelf plate. In what is laid and fluorescent lamps are placed in front of it,
The shelf reinforcing plate having the V-shaped cross section is set to a bending angle so that the wall surface thereof is directed to the front end of the next lower product display shelf, and the blown cold air flow from the back of the cabinet along the rear wall surface of the shelf reinforcing plate. A wind guide is directed toward the lower shelf tip, and a part of the cold air blown from the rear side of the cabinet is directed toward the fluorescent lamp on the front and rear wall surfaces of the shelf reinforcing plate having the V-shaped cross section. A hole is drilled, and the cold airflow that has passed through the air guide hole is caused to flow around the fluorescent lamp,
A wind guide hole provided in the wall of the shelf reinforcement plate with a downward facing wind direction plate at the front end of the product display shelf so as to define a tag molding at the tip of the product display shelf and an air guide passage between the tag molding A cold air circulation type open showcase in which the cold airflow flowing forward through the peripheral area of the fluorescent lamp is guided toward the air guide passage at the front end of the product display shelf one step below.