JP2012143313A - Open showcase - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cold air circulation type open showcase which has improved a cold air blowing method so that a whole interior is uniformly kept cold without impairing cold retaining performance about the open showcase that is applied to a corner case of a round type showcase.SOLUTION: There is provided the cold air circulation type open showcase with merchandise display shelves 8 installed in the interior of an outer circumferential surface open type case body 1 composed of a cooling unit 6, a bottom part 2 incorporating a cold air fan 7, a duct part 3, and a canopy part 4. Interior cold air recovered through a cold air inlet 2a opened to the outer circumference of the bottom part 2 is circulatingly sent to be blown to the interior via the cooling unit 6 and the cold air flowing passage 3a of the duct part 3 to keep the interior cold. The upper end of the duct part 3 is closed and cold air outlets 5a corresponding to the merchandise display shelves 8 of respective stages are opened at a back plate 5 arranged at the duct part. The total air volume of the cold air guided to the cold air flowing passage 3a via the bottom part 2 is blown toward an interior space through the cold air outlets 5a of the back plate 5.

Description

  The present invention relates to a cold air circulation type open showcase intended for a showcase applied to a corner case of a round type showcase installed in a store such as a supermarket.

  First, FIG. 4 shows a conventional structure of a cold air circulation type open showcase applied to the corner case of the round type showcase described above. In the figure, reference numeral 1 denotes a case main body having an outer shape with open front and left and right side surfaces (or one side area), 2 a boat bottom of the case main body 1, and 3 a frame structure erected at the rear of the boat bottom 2. The duct part, 4 is a canopy part provided at the top of the duct part 3, 5 is a back plate in the warehouse laid on the front surface of the duct part 3, 6 is a cooler arranged on the boat bottom part 2, 7 is a cold air fan, 8 is Product display shelves arranged in the upper and lower stages on the back plate 5 of the case body 1, 9 is a deck pan arranged on the upper surface of the boat bottom 2, and the boat bottom 2 has its outer periphery (front edge, side edge) along The cold air inlet 2a is opened, and the air curtain outlet 4a is opened in the canopy portion 4 toward the open surface area in the warehouse.

  With the above configuration, a part of the cold air flow A that is exchanged with the cooler 6 and guided to the cold air passage 3a of the duct portion 3 as shown by the arrow in the case of the cool operation of the showcase is dispersedly opened in the back plate 5 The cool air blowout (punching hole) 5a is blown out toward the interior space (arrow A1), and the remaining cold airflow is from the air curtain blowout port 4a of the canopy portion 4 to the outer peripheral portion of the boat bottom 2 and the cold air suction port 2a. A cold air curtain A2 is blown out obliquely downward along the open surface (front surface, side surface) of the case main body 1. The cool air flow A1 blown into the chamber through the cold air outlet 5a of the back plate 5 and the cold air curtain A2 blown to the open surface area of the case body 1 from the air curtain outlet 4a of the canopy 4 are the cold air inlet 2a. The air is collected in the boat bottom 2 through the air and is circulated through the cool air fan 7 and the cooler 6 so as to return to the cool air ventilation path 3a of the duct portion 3 again.

  By the way, in the cold air circulation type open showcase in which the front and side surfaces of the case main body 1 are open like the corner case of the round type showcase, the case main body 1 is connected to the case main body 1 through the air curtain outlet 4a. It is difficult to blow out and form a uniform cool air curtain over the entire open surface. Particularly, the corner portion of the case body 1 becomes a blind spot of the air curtain, and the cool air curtain A2 that blows off the open surface diffuses downstream. For this reason, the air curtain layer becomes thin and it becomes easy for outside air heat to invade from the surroundings. For this reason, the cold insulation performance is impaired, and it becomes difficult to uniformly cool the entire interior of the cabinet without unevenness.

  In addition, the deck pan 9 arranged at the bottom of the cabinet often displays a large amount of tall paper-packed products and the like, and this product flows into the cold air curtain A2 flowing downward from the upper side toward the cold air inlet 2a. The air curtain airflow is disturbed by interference and a part of the cold air curtain A2 is not sucked into the cold air inlet 2a of the boat bottom part 2 due to this and leaks to the front of the outside of the vessel as it is. There is also a problem to lower.

  On the other hand, as a countermeasure against the above problem, a structure is formed in which a duct communicating with the duct portion of the cool air case body is formed inside the shelf of the product display shelf, and the cool air is blown out toward the corner portion of the case body through the duct inside the shelf ( For example, refer to Patent Document 1), and the structure of an open showcase that communicates with the duct portion of the case body and additionally arranges porous ducts at the corners of the interior space so that the corners in the interior can be kept cool evenly. (See, for example, Patent Document 2).

JP 2001-221563 A JP 2005-30656 A

By the way, in the showcase disclosed in the above-mentioned prior art documents (Patent Documents 1 and 2), the duct structure in the warehouse is complicated and the cost of the product is increased.
In addition, a cooler with high refrigeration capacity is installed in the showcase in advance in order to compensate for the deterioration in cooling performance caused by the turbulence of the cold air curtain blown out on the open surface area of the case body or leakage to the outside of the cabinet. However, in this method, the energy consumed in vain increases and the power consumption of the showcase increases more than necessary.

  The present invention has been made in view of the above points, and for the open showcase applied to the corner case of the round type showcase described above, the canopy portion is directed toward the open surface area of the case body as in the past. An object of the present invention is to provide a cold air circulation type open showcase in which the cool air blowing method into the interior is improved so that the entire interior of the interior can be kept cool without depending on the cold air curtain that is blown out from the interior.

In order to achieve the above object, according to the present invention, a boat bottom portion incorporating a cooler and a cold air fan, a duct portion communicating with the boat bottom portion and standing at the rear thereof, and the cold air duct portion It is a cold air circulation type open showcase in which product display shelves lined up and down are erected in the case body of an open outer peripheral surface consisting of a canopy portion provided at the top,
Circulating air blows so that a cold air inlet is opened in the outer periphery of the boat bottom, and the cold air collected in the boat bottom through the cold air inlet is blown out into the warehouse via the cooler and the cold air passage of the duct portion. And in what was to keep the interior cold,
After closing the upper end of the duct part, the back plate installed inside the duct part is opened with a cold air outlet corresponding to the product display shelf of each stage, and the cool air blow of the duct part via the ship bottom part The total air volume of the cool air guided to the road is blown out into the interior space through the cold air outlet of the back plate (Claim 1).

In addition, the present invention can be configured based on the above configuration with additional requirements as described below.
(1) Air flow adjustment dampers are attached to the cold air outlets that are distributed and opened in the back plate corresponding to the product display shelves at each stage, so that the air volume and wind speed of the cold air that is blown out into the cabinet can be variably adjusted. (Claim 2).
(2) The case body is provided with an outside air inlet, an outside air fan, and an air curtain outlet, and an outside air curtain is blown out forward along the open surface area of the case body to allow outside air to enter the cabinet. (Claim 3).

  In the above configuration, the amount of cold air blown forward from the cold air outlet opening in the back plate in the warehouse toward the product display space in the warehouse, the air speed is the volume in the warehouse, the number of product display shelves, the height position, and By setting it appropriately according to the angle of the shelf, etc., the cold airflow that passed through the product display shelf at low air speed along the product display shelf at each stage penetrates the open surface area of the case body as it is. Without being dissipated outside the container, the space inside the container naturally flows under its own weight beyond the front end of the merchandise display shelf, and is finally collected through a cold air inlet opening at the outer periphery of the boat bottom.

  As a result, even if the case main body is open at the front and side as in the case of a round open showcase, the cold air curtain is poorly formed and displayed at the corner of the case main body as in the conventional showcase. It is possible to solve the problem of the cold air curtain leaking out of the room due to the interference with the product and the problem of deterioration of the cold insulation performance caused by this, and to keep the entire interior cold without unevenness.

  In addition, by installing an air volume adjustment damper at the cold air outlet opening in the back plate, it can be mounted from the back plate corresponding to the interior volume of the showcase, the number of product display shelves, the mounting height position, and the shelf angle. The air volume and speed of the cool air that blows out toward the interior space can be variably set appropriately.

  Furthermore, an outside air intake port, an outside air fan, and an air curtain outlet are provided in the canopy portion of the case body, and an outside air curtain is blown out along the open surface of the case body so that the outside air into the cabinet is Intrusion can be suppressed, and is effective, for example, in a showcase installed near a store entrance where it is susceptible to airflow disturbance from the surroundings.

  In addition, for the conventional showcase installed at the location, the cooling performance can be maintained by simply remodeling the duct section leading to the canopy section and changing the cold air outlets drilled in the back plate. Improvement can be achieved.

It is side sectional drawing showing the internal structure of the open showcase by the Example of this invention. It is the front view which represented typically the arrangement | positioning of the backplate in FIG. 1, and a merchandise display shelf. It is explanatory drawing of the structure and function of the air volume adjustment damper attached to the backplate of FIG. 2, (a), (b), (c) is a schematic diagram showing the setting state of full close, half open, and full open, respectively. It is side view sectional drawing showing the internal structure of the open showcase of a prior art example.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on the examples shown in FIGS. In the illustrated embodiment, members corresponding to those in FIG.
First, in FIG. 1, the main body case 1 of the embodiment has basically the same structure as that of the conventional example shown in FIG. At the same time, as shown in FIG. 2, the back plate 5 has cold air outlets 5 a dispersedly opened corresponding to the product display shelves 8 of each stage, and led to the cold air blowing path 3 a of the duct portion 3 through the boat bottom 2. The total amount of the cool air that has been blown is blown out into the interior space through a cold air outlet 5 a that opens in the back plate 5.

  In FIG. 2, the cold air outlet 5 a opened in the back plate 5 is set according to the volume of the product display space partitioned vertically by the product display shelf 8. That is, as shown in FIG. 1, the volume between the deck pan 9 arranged on the bottom of the case body 1 and the product display shelf 8 arranged in the lower stage is generally the volume between the upper shelf and the lower shelf, and the upper shelf. Since it is larger than the upper volume, the cold air outlet 5a is divided into two stages to set a large total opening area.

  In addition, the canopy 4 has an outside air intake 4b at the rear of the top surface thereof, and an outside air fan 10 is disposed inside the canopy 4 so that the ambient air taken in from the outside air intake 4b can be removed from the canopy during operation of the showcase. The outside air curtain B is blown out from the air curtain outlet 4a 4 along the open surface of the case body 1 to the outside.

  In the above configuration, during the cool-down operation of the showcase, the cold air flow A exchanged with the cooler 6 and blown into the cold air passage 3a of the duct portion 3 is placed on the product display shelves 8 arranged in the upper and lower stages as shown by the arrows in the figure. At the same time, the air is blown into the space in the cabinet at a low air speed through the cold air outlet 5a that is distributed and opened on the back plate 5, and the product is kept cold by passing through the peripheral area of the product (not shown) displayed on the product display shelf 8 of each stage. . Further, the cold airflow that has passed through the merchandise display shelf 8 naturally flows downward from the front end of the shelf under its own weight, and is finally collected through the cold air inlet 2a that opens to the outer periphery of the boat bottom 2, and from here the cold air fan 7 Then, the air is circulated through the cooler 6 so as to be sent to the cool air passage 3a of the duct portion 3 again. In addition, an outside air curtain B blown out from the air curtain outlet 4a of the canopy section 4 is formed on the outside of the case body 1 along the open surface to prevent outside air from entering the inside from the surroundings. . Note that the outside air curtain B does not enter the chamber, but flows down to the front of the case body 1 and diffuses to the surroundings.

  As a result, the formation of the cold air curtain at the corner portion of the case body 1 which is a problem in the conventional structure of FIG. 4 and the cooling performance deterioration due to the leakage of the cold air curtain due to interference with the display product are reduced. This eliminates the problem, and the entire interior of the cabinet can be kept cool without impairing the cooling performance of the showcase.

  Further, in the back plate 5 shown in FIG. 2, the opening area of the cold air outlet 5a is fixedly determined in accordance with the arrangement of the merchandise display shelves 8, but the user of the showcase attaches the merchandise display shelves 5 of each stage. Since the height is changed and the angle of the shelf is changed, it is desirable that the opening area of the cold air outlet 5a can be adjusted in accordance with this change.

  Therefore, such a request can be easily coped with by combining a slide type air volume adjusting damper 11 with the back plate 5 as shown in FIG. That is, the damper 11 is a long plate that is supported so as to be slidable to the left and right, corresponding to one row of cold air outlets 5a formed in the back plate 5 side by side, and on the plate surface of the cold air outlet 5a. Damper holes 11a are formed in accordance with the arrangement pitch. Then, the damper 11 is slid to the left and right, and set to the desired positions of “fully closed”, “half opened”, and “fully opened” as shown in FIGS. According to the change in the mounting height and the shelf angle, it is possible to adjust the air volume and the air speed of the cool air blown out from the duct portion 3 (see FIG. 1) through the cold air outlet 5a of the back plate 5 to the inside of the warehouse. .

DESCRIPTION OF SYMBOLS 1 Case body 2 Boat bottom part 2a Cold air inlet 3 Duct part 3a Cold air ventilation path 4 Canopy part 4a Air curtain outlet 4b Outside air inlet 5 Back plate 5a Cold air outlet 6 Cooler 7 Cold air fan 8 Merchandise display shelf 9 Deck pan 10 Outside air fan 11 Damper 11a Damper hole

Claims (3)

An outer peripheral surface open type comprising a boat bottom portion incorporating a cooler and a cold air fan, a duct portion communicating with the boat bottom portion and standing at the rear thereof, and a canopy portion provided at the top of the cold air duct portion A cold-circulation open showcase with product display shelves lined up and down in the cabinet of the case body,
A cold air inlet is opened in the outer periphery of the boat bottom, and the cold inside the vessel collected in the boat bottom through the cold air inlet is circulated so as to be blown out into the vessel via the cooler and the cold air passage of the duct portion. In the one that was blown to keep the inside cold,
After closing the upper end of the duct part, the back plate installed inside the duct part is opened with a cold air outlet corresponding to the product display shelf of each stage, and the cool air blow of the duct part via the ship bottom part An open showcase characterized in that the total amount of cool air guided to the road is blown out into the interior space through the cool air outlet of the back plate.   The open showcase according to claim 1, wherein an air volume adjusting damper is attached to a cold air outlet that is distributed and opened in the back plate corresponding to each stage of the product display shelf.   The open showcase according to claim 1, wherein an outside air intake port, an outside air fan, and an air curtain outlet are provided in the canopy portion of the case body, and the outside air curtain is blown out along the open surface area of the case body. An open showcase characterized by the formation.