JPH11137382A - Dual type refrigeration showcase - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the cold insulation performance of a flat showcase and to prevent the frost formation of merchandise with a dual type showcase constituted by vertically integrally combining the flat showcase or an open showcase and the flat showcase as an object. SOLUTION: This dual type refrigeration showcase is constituted by integrally combining a reach-in type showcase 1 or a cold air circulation type open showcase for blowing and forming a cold air curtain in the front surface open area of a case main body 2a at the upper part of a cold air circulation type flat showcase 2 for blowing and forming the cold air curtain in the upper surface open area of the case main body 2a. In this case, the upper surface open area of the flat showcase 2 on a lower stage side is covered and the glass door 2e of a sliding operation type is provided there as a transparent upper surface door capable of seeing through the inside of a container. Normally, the door is closed, the intrusion of outdoor air heat and interference with the cold air curtain by leakage cold air on an upper stage showcase side are prevented and the cold insulation performance is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dual-type refrigerated refrigeration showcase in which a cool air circulation type reach-in type showcase or open showcase and a cold air circulation type flat showcase are combined in upper and lower stages.

[0002]

2. Description of the Related Art Conventionally, as a frozen showcase for displaying and selling frozen products such as ice cream, as shown in FIG. 5, a "pair freezer" is constructed by combining a reach-in type showcase and a flat type showcase in upper and lower rows. A dual-type freezer showcase, called, has already been commercialized.

[0005] In FIG. 5, reference numeral 1 denotes a reach-in type showcase, and 2 denotes a flat type showcase.
The dual type showcase is constructed by stacking the upper and lower two integrally. Here, the upper-stage reach-in type showcase 1
Has a product display shelf 1c disposed inside a case body (insulated housing) 1b having a transparent glass door 1a on the front surface, and is defined between an outer box and an inner box of the inner case body 1b. A cooler (evaporator of a refrigerator) 1e and a fan 1f are arranged in the cool air circulation duct 1d, and in this configuration, cool air is circulated and blown into the refrigerator to keep the products displayed on the product display shelf 1c and the deck pan at the bottom of the refrigerator. I do.

On the other hand, in the flat showcase 2, a cooler 2c and a fan 2d are arranged in a cool air circulation duct 2b defined between an outer box and an inner box of an open-top case body 2a.
With this configuration, the cool air curtain A is blown out from the rear side to the open area of the upper surface of the case body 2a to keep the goods stored in the refrigerator cool. The cooler 1 of the reach-in type showcase 1 and the cooler 2c of the flat type showcase 2 are connected to a condensing unit (not shown) of a separately-installed refrigerator to perform parallel operation.

[0005]

In the above-mentioned conventional dual-type showcase, the upper surface of the lower flat showcase is open in consideration of the property of taking in and out of the product. In the meantime, in a cold air circulation type flat showcase, a cool air curtain which blows out from the rear in a substantially horizontal direction in an open area on an upper surface thereof is suppressed at a relatively low speed. This is because, when the blowing air velocity of the cool air curtain is increased, the amount of leaked cool air in which the cool air flows out of the refrigerator from the front of the case body increases.

For this reason, if the upper surface of the flat type showcase is left open, the cool air curtain is affected by disturbance such as air-conditioning air in the store and the like, so that the heat of the outside air deteriorates and the cooling performance is reduced, and the product attaches to the product. It causes frost. Also,
Small-scale stores, such as convenience stores, that sell a wide variety of products from frozen foods to bento and prepared foods at relatively narrow sales floors, make effective use of the space inside the store and use a single showcase to store various types of frozen products such as ice cream. In addition, there is a demand for a showcase that can display and sell refrigerated products such as lunch boxes and prepared dishes separately. In response to this demand, the upper-side showcase combined with a flat-type showcase is a reach-in type showcase with a frozen specification. The development of dual-type refrigerated showcases, which have been replaced by refrigerated open showcases, has been promoted.

However, if an open showcase of a cool air circulation type is adopted on the upper side of the dual type showcase,
New problems arise. That is, the open showcase is different from the reach-in type showcase, because the front surface of the case body is open, the leakage of the cool air curtain occurs, and the leaked cool air blows out on the upper surface of the flat type showcase in a substantially horizontal direction. , The laminar flow of the air curtain is disturbed by the interference with the leaking cold air flow of the open showcase, and as a result, the cooling performance of the flat showcase is significantly reduced. In addition, when the front door of the upper-side reach-in type showcase is opened, a large amount of cool air flows out and disturbs the cool air curtain of the lower-stage flat showcase.

The present invention has been made in view of the above points, and is intended for a flat showcase or a dual-type showcase in which an open showcase and a flat showcase are combined in an upper and lower unit, and the cooling performance of the flat showcase. It is an object of the present invention to provide a dual-type freezing and refrigerated showcase that is improved so as to prevent frost formation on products.

[0009]

According to the present invention, in order to attain the above object, according to the present invention, a cool air circulation type flat showcase in which a cool air curtain is blown out in an open area of an upper surface of a case body is provided on the upper part of the case body. The lower side of a dual-type refrigerated showcase that combines a reach-in type showcase with a glass door on the front or a cool air circulation type open showcase that blows and forms a cool air curtain on the front open area of the case body. And a transparent top door that covers the open top area of the flat showcase and allows the inside of the refrigerator to be seen therethrough (claim 1). This top door is configured in the following specific manner.

(1) The top door mounted on the flat showcase is constituted by a sliding door that slides in the left-right direction to open and close. (2) The top door mounted on the flat showcase is constituted by a sliding door that slides in the front-rear direction and opens and closes. (3) The top door of the above paragraph (2) is laid in a slightly forwardly inclined posture, and the door is closed by its own weight when the hand is released while being pushed backward and opened (claim 4).

As described above, a door (for example, a transparent glass door having a function of preventing dew condensation and fogging) is provided in the open area on the upper surface of the flat type showcase arranged in the lower part of the dual type showcase, so that the door is always closed. In order to protect the cold air curtain formed by blowing out the inside of the refrigerator by shutting off the inside of the refrigerator from the outside air. As a result, it is possible to suppress the invasion of outside heat into the refrigerator, thereby improving the cooling performance and preventing the product from being frosted, and reduce the required refrigerating capacity, thereby achieving an energy saving effect.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. Each of the illustrated embodiments shows a dual type showcase in which a reach-in type showcase and a flat type showcase are combined in upper and lower stages, and the same members in FIG.

[Embodiment 1] FIGS. 1 (a), 1 (b) and 2 show an embodiment corresponding to claim 2 of the present invention.
This embodiment is different from the conventional structure shown in FIG. 5 in that a dual type showcase in which a reach-in type showcase 1 and a flat type showcase 2 are combined in upper and lower stages is shown.
A side-opening glass door 2 that slides in the left-right direction (arrow P) to open and close the door as an upper surface door in the upper open area of the case main body 2a with respect to the lower flat show case 2.
e is provided. The glass door 2e is divided into a plurality of door plates in the left-right direction of the case body 2a, and each door plate has a handle 2f, and each door plate straddles a rail laid before and after the door plate. Guided and supported. In addition,
The glass door 2e has a multi-layer glass that does not condense or fog by contacting the cold air in the refrigerator, or a door structure provided with a dew-proof heater. In addition, a transparent resin door such as an acrylic resin may be used instead of the glass door 2e.

Then, the glass door 2e is always closed, and the door plate is slid left and right to open only when replenishing and removing goods. Thereby, the glass door 2e is always used.
The cold air curtain that shuts off between the inside of the refrigerator and the surrounding outside air and blows out to the upper surface of the refrigerator is protected from disturbances. The cool air curtain is not disturbed, so that the cooling performance can be improved and the frost on the product can be prevented.

[Embodiment 2] FIGS. 3 and 4 show an embodiment corresponding to claims 3 and 4 of the present invention. In this embodiment, a vertically-opening glass that slides in the front-rear direction (arrow Q) to open and close the door as an upper-side door is provided on the upper-side open area of the case body 2a with respect to the lower flat-side showcase 2. Equipped with door 2g. The glass door 2g is divided into a plurality of door plates in the left-right direction of the case body 1, and has a handle 2f at the front end of each door plate. (Not shown). In addition, glass door 2g
It is needless to say that it is also possible to form a single door without dividing the door.

Further, the glass door 2g is laid in a slightly forward leaning posture (forward leaning angle θ). To open the door, put a hand on the handle 2f and push it backward, and release it in this open position. The door plate is designed to close naturally under its own weight. This makes it possible to easily operate the door when taking in and out the product, and to prevent the door plate from being left open due to forgetting to close. Further, when the door is fully opened, the door is not closed by a stopper mechanism (not shown), and the product is easily loaded.

In each of the above embodiments, an example was shown in which a reach-in type showcase was adopted as the upper-side showcase. However, a dual-type showcase in which the reach-in type showcase was replaced with a cool air circulation type open showcase was used. Needless to say, the present invention can be similarly implemented.

[0018]

As described above, according to the dual-type freezer and refrigerated showcase of the present invention, an upper surface door is provided here so as to cover the upper open area of the flat showcases arranged in the lower stage. Thus, the door is normally closed to shut off the inside of the refrigerator from the outside air, and protects the cool air curtain blown out from the interior of the flat showcase. This allows
In addition to suppressing the intrusion of outside air heat into the interior of the cabinet, it also prevents the cold air leaking from the showcase on the upper stage from interfering with the cold air curtain that blows out inside the cabinet of the flat-type showcase, thereby improving the cooling performance and improving the product's cooling performance. The formation of frost can be prevented, and the required refrigerating capacity is reduced, so that an energy saving effect is obtained.

In addition, by adopting a front-rear sliding door, which is laid in a forwardly inclined position so as to close naturally, as an upper surface opening / closing door of the flat-type showcase, it is possible to prevent forgetting to close the door, so that products can be taken in and out. Easy to do.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a dual-type refrigerated showcase corresponding to a first embodiment of the present invention, wherein (a) is a longitudinal side view of the showcase, and (b) is a front view thereof.

FIG. 2 is an external perspective view of a portion around a top door in FIG.

FIG. 3 is a longitudinal sectional side view showing a configuration of a dual type refrigerator-freezer showcase corresponding to Embodiment 2 of the present invention.

FIG. 4 is an external perspective view of a portion around a top door in FIG. 4;

FIG. 5 is a longitudinal sectional side view of a conventional dual-type refrigerated showcase.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Reach-in type showcase 2 Flat type showcase 2a Case main body 2b Cooling air circulation duct 2c Cooler 2d Fan 2e Side-opening glass door (top-side door) 2g Vertical-opening type glass door (top-side door) Angle P, Q Sliding direction of top door

Claims (4)

[Claims] 1. A reach-in type showcase provided with a glass door on the front of the case body on the top of a cold air circulation type flat showcase in which a cool air curtain is blown out in an open area on the upper surface of the case body, or the front opening of the case body. In a dual-type refrigerated refrigerated showcase that is constructed by integrally combining a cool air circulation type open showcase that blows out a cold air curtain in the area, the inside of the refrigerator can be seen here by covering the upper open area of the lower flat showcase A dual-type refrigerated display case equipped with a transparent top door. 2. The dual-type refrigerated showcase according to claim 1, wherein the top door provided on the flat-type showcase is a sliding door that slides in a horizontal direction to open and close. 3. The dual-type refrigerated showcase according to claim 1, wherein the top door mounted on the flat showcase is a sliding door that slides in a front-rear direction to open and close. 4. The dual display case according to claim 3, wherein the upper door is laid in a slightly forwardly inclined position, and the door is closed by its own weight when the hand is released while being pushed backward and opened. Type refrigerated showcase.