JP3213505B2 - Open showcase - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an open showcase having a cold air curtain formed at an opening of a storage room.

[0002]

2. Description of the Related Art Conventionally, this kind of open showcase has been disclosed in, for example, Japanese Utility Model Publication No. 52-301 (F25D17 /
As shown in FIG. 06), a partition plate (inner wall) is attached to the inside of the heat insulating wall with a space therebetween, a duct is formed between the partition plate and the heat insulating wall, and the inside of the partition plate is formed as a storage room. A discharge port communicating with the duct is formed at the upper edge of the front opening of the chamber, and a cool air curtain is formed at the opening by discharging cool air from the discharge port toward the opening.

Hereinafter, the structure of a conventional open showcase 100 according to the present invention will be described with reference to the drawings. FIG. 9 is a vertical sectional side view of the upper front end of a conventional open showcase 100. A heat insulating wall 102 opened to the front surface, an outer surface material 103 and an inner surface material 104 made of a steel plate, and a molded heat insulating material 106 attached to a corner of the outer surface material 103 to hold the two side materials 103 and 104 at intervals, These double-sided materials 103, 10
4 and a foamed polyurethane heat insulating material 107 filled between the molded heat insulating materials 106.

[0004] A partition plate 108 made of a steel plate is attached to the inside of the heat insulating wall 102 at intervals, and the storage room 11 having an opening 109 on the front surface inside the partition plate 108.
1 and a duct 112 between the partition plate 108 and the heat insulating wall 102. The front end of the upper wall of the partition plate 108 is obliquely bent toward the lower opening 109, and a bent portion 108A is formed therein.
A partition member 113 is provided at an interval (outside) outside the front side.

The partition member 113 is made of a steel plate, and the rear portion is bent at an obtuse angle to form a mounting portion 113A, and the rear end portion 113B is bent inward at a right angle. Then, the mounting portion 113A is screwed to the inner surface member 104 so as to extend obliquely forward and downward from the inner surface member 104 in parallel with the bent portion 108A. A duct 112 is provided between the partition member 113 and the bent portion 108A.
A discharge port 116 communicating with the discharge port 116 is formed.
Inside, a honeycomb material 117 is attached.

A molded heat insulating material 118 having a triangular cross section is attached to the front side of the partition member 113, and a steel reflecting plate 1 is provided in front (outward) of the discharge port 116.
The lower end of the reflection plate 119 holds the lower end of the molded heat insulating material 118. A fluorescent lamp 121 as an illumination lamp is mounted inside the reflector 119, and a dew-proof heater 122 is mounted on the outer surface of the reflector 119 between the reflector 119 and the molded heat insulating material 118.

In the above construction, a cooler or a blower of a cooling device (not shown) is provided in the duct 112, and the cool air cooled by the cooler is blown up by the blower, passes through the duct 112, and has a discharge port 116. The ink is further discharged toward the opening 109. As a result, a cool air curtain is formed in the opening 109 and a part of the cool air is supplied to the storage room 11.
1, and the inside of the storage room 111 is cooled.

[0008]

However, since the partition member 113 is also cooled by the discharge of the cool air, a portion where the partition member 113 comes into contact with the outside air, that is, the partition member 1 is provided.
As shown in FIG. 10, dew condensation F is generated at the distal end portion 13 and at a connection portion between the molded heat insulating material 118 and the reflection plate 119. This dew drops over time, and contaminates the periphery of the showcase 100 and deteriorates the quality of the product in the storage room 111.

The molded heat insulating material 118 and the dew-proof heater 12
2 is provided to insulate the partition member 113 or to prevent the dew condensation F by heating the connection portion, but conventionally, the partition member 113 has a good thermal conductivity that is easily cooled. Since they were made of steel plate, these molded heat insulating materials 1
There is a problem that the thickness of the heater 18 must be increased or the capacity of the dew-proof heater 122 must be increased. Here, when the fluorescent lamp 121 is turned on, the light (radiant heat; indicated by a triangle in FIG. 10) is used to heat the reflector 119. However, in the related art, since the light did not reach the connection portion, the dew condensation by the fluorescent lamp 121 was prevented. No effect could be expected.

Further, if the dew is frozen by the discharged cool air, the flow of the cool air discharged from the discharge port 116 is disturbed, and a stable air curtain cannot be formed. Further, conventionally, when attaching the partition member 113, the attaching portion 113A
11 is screwed to the surface of the inner surface material 104 on the duct 104 side, so that the mounting position varies as shown by the broken line in FIG. 11 and the strength is weak, so that the mounting angle is changed as shown by the broken line in FIG. Also causes variations. For this reason, there has been a problem that the assembling accuracy of the partition member 113 is reduced, and a stable air curtain cannot be formed as described above.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional technical problems, and it is an object of the present invention to effectively prevent dew condensation on a partition member that partitions the outside of a discharge port and to form a stable air curtain. The purpose is to provide an open showcase that can be used.

[0012]

According to a first aspect of the present invention, there is provided an open showcase wherein a cold air curtain is formed at an opening of a storage room, and an outer surface material, an inner surface material, and an end of the inner and outer surface materials. A heat insulating wall filled with a heat insulating material between a low-thermal-conductivity connecting member connecting the parts, a partition plate provided at an interval inside the heat insulating wall, and the partition plate and the heat insulating wall. A duct formed between them, a discharge port of an air curtain formed in communication with the duct, and a partition member for partitioning the outside of the discharge port, and the partition member is made of a material having a low thermal conductivity. And make contact with the connecting member.
The end of the exposed inner surface material is covered with a partition member .

The open showcase according to the second aspect of the present invention is such that the inner surface material exposed without contacting the connecting member is provided.
The corners are bent at the ends , and the partition members are integrally formed with projections that come into contact with the corners.

An open showcase according to the third aspect of the present invention.
Consists of forming a cold air curtain at the opening of the storage room
That are provided at intervals inside the insulating wall
A partition plate and a duct formed between the partition plate and the heat insulating wall.
And an air curtain formed in communication with this duct
Discharge port, and a reflector provided outside the discharge port,
An illumination light installed inside this reflector and an insulating wall
Installed between reflectors to partition the outside of the discharge port
Heats the partition member and the connection between the partition member and the reflector
Equipped with an anti-dew heater,
It also illuminates the minute, and when the light is turned off, the dew-proof heater
Power supply.

[0015] In the open showcase of the invention of claim 1
According to this, since the partition member that partitions the outside of the discharge port is formed of a material having low thermal conductivity, the temperature difference between the surface where the partition member comes into contact with the outside air and the outside air can be reduced, and dew condensation on the partition member can be suppressed. Can be. In addition, the outer surface material and the inner surface material are also connected by a connecting member having a low thermal conductivity, and are not in contact with the connecting member.
Because the end of the inner surface material exposed to the outside is covered with the partition member , dew condensation on the inner and outer surface materials can be suppressed. Therefore, it is possible to prevent the contamination around the showcase and the deterioration of the product while reducing or eliminating the heat insulating material and reduce the capacity of the dew-proof heater, and to form a stable air curtain.

According to the open showcase of the second aspect of the present invention, in addition to the above, it is exposed without contacting the connecting member.
Since the corner portion is bent at the end of the inner surface material to be formed, and the partition member is integrally formed with a projection that comes into contact with the corner portion, positioning at the time of attaching the partition member becomes easy. In addition, since the strength of the inner surface material and the partition member itself is improved by forming the corners or the protrusions, the mounting accuracy of the partition member is improved, and a stable and high-precision air curtain can be formed. It becomes.

In the open showcase according to the third aspect of the present invention,
According to this, the connection between the reflector and the partition member that partitions the outside of the discharge port
The connecting part is also illuminated by a lighting lamp, and this lighting lamp is turned off.
So that the dew-proof heater that heats the connection
When the lighting is turned on, the partition member and the reflector
The connection portion is heated by radiant heat from the lamp, when turned off
It can be heated by a dew-proof heater.

Accordingly, the power consumption of the dew-proof heater can be reduced.
While effectively preventing condensation on the above-mentioned connection parts that come into contact with outside air.
To prevent contamination around the showcase and product deterioration.
As well as forming a stable air curtain
It is a function.

[0019]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows an open showcase 1 of the embodiment.
FIG. 2 is an enlarged vertical sectional side view of the upper front end of the open showcase 1. The open showcase 1 is installed in a store such as a supermarket, and includes an insulating wall 2 opened to the front and a side plate (not shown). The insulating wall 2 includes an outer member 3 and an inner member 4 made of a steel plate, It is composed of a connection member 6 made of a hard synthetic resin having a low thermal conductivity for connecting the end portions of the double-sided materials 2 and 3, and a polyurethane foam insulating material 7 filled between the double-sided materials 3 and 4 and the connection member 6. I have.

The front portion of the outer surface member 3 is bent inward and is formed into a substantially U-shaped cross section, and the front portion of the inner surface member 4 is bent outward and is also formed into a substantially U-shaped cross section. ing. The connecting member 6 is formed in a step-like shape that becomes lower toward the front, and the end of the outer surface material 3 overlaps with the lowest front upper surface of the connecting member 6 and the inner surface material 4 abuts on the highest rear lower surface. ing. Thereby, the corner 4A at the front end of the inner surface material 4 is connected to the connecting portion.
The corner 4A and the connecting member 6 form a concave groove 6A in the center of the connecting member 6 while being exposed without contacting the material 6 .

A partition plate 8 made of a steel plate is attached to the inside of the heat insulating wall 2 at intervals, and a storage room 11 having a front opening 9 is provided inside the partition plate 8. A duct 12 is formed between the plate 8 and the heat insulating wall 2. A shelf 13 is installed in the storage room 11, and a deck pan 14 is attached to the bottom of the storage room 11. Below the deck pan 14, a lower duct 16 having a rear portion communicating with the duct 12 is formed. In the lower duct 16, a cooler 17 and a blower 18 included in a cooling device are arranged. Further, a suction port 19 communicating with the lower duct 16 is formed at the front side of the deck pan 14 at the lower edge of the opening 9.

On the other hand, the front end of the upper wall of the partition plate 8 is bent obliquely toward the lower opening 9, and a bent portion 21 is formed therein. Are provided with partition members 23 at intervals.

The partition member 23 is extruded from a hard synthetic resin having a low thermal conductivity, and the rear portion is bent at an obtuse angle to form a mounting portion 23A, and the rear end portion 23B is further bent inward. It is bent at right angles. Further, a protrusion 23C that stands upright at a right angle to the mounting portion 23A is integrally formed from the front end of the mounting portion 23A, and an engagement groove 23D that opens forward is formed at the front end of the partition member 23. ing.

The projection 23C and the mounting portion 23A
Is made to correspond to the corner 4A of the inner surface material 4, the projection 23C is in front of the corner 4A, and the mounting portion 23A is the corner 4A.
A by contacting the lower surface of the inner surface material 4 with the lower surface of the inner surface material 4.
Fixed to

At this time, the projection 23C contacts the connecting member 6.
The front surface of the corner portion 4A of the inner surface member 4 that is exposed at the lower side without being in contact therewith is covered, and the rear end portion 23B protrudes into the duct 12. Further, the partition member 23 is attached so as to extend obliquely forward and downward from the corner portion 4A in parallel with the bent portion 21. And
A discharge port 26 communicating with the duct 12 is formed between the partition member 23 and the bent portion 21, is located at the upper edge of the opening 9, and has a honeycomb material 27 attached in the discharge port 26.

On the other hand, a top plate 31 is attached to the upper surface of the heat insulating wall 2 and extends to above the opening 9. And
A reflector 32 made of steel is attached to the inner surface of the top plate 31 in front of (outward of) the discharge port 26, and the rear end of the reflector 32 is engaged with the engagement groove 23 </ b> D of the partition member 23. Have been combined. A fluorescent lamp 33 as an illumination lamp is attached to the inside (lower surface) of the reflection plate 32.

The lower surface of the fluorescent lamp 33 has a reflecting plate 32.
(The tip of the engagement groove 23D) 36 between the partition member 23 and the partition member 23
3 so that when the fluorescent lamp 33 is turned on, the light of the fluorescent lamp 33 also illuminates the connection part 36 as shown by a triangle in FIG. Further, a dew-proof heater 34 is attached to the outer surface of the reflection plate 32 between the reflection member 32 and the partition member 23.

The fluorescent lamp 33 is turned on (ON) when the store is opened and turned off (OFF) when the store is closed as shown in the timing chart of FIG. On the other hand, the dew-proof heater 34 is energized (ON) when the fluorescent lamp 33 is turned off and generates heat as shown in FIG. 4 to heat the reflector 32 and the partitioning member 23, and is de-energized when turned on, as shown in FIG. (OFF).

With the above configuration, the cool air cooled by the cooler 17 is blown backward by the blower 18 and
2, the liquid is discharged from the discharge port 26 toward the suction port 19 at the lower edge of the opening 9 as shown by the arrow in the figure. As a result, a cool air curtain is formed in the opening 9, and a part of the cool air circulates also in the storage room 11 to cool the inside of the storage room 11 to a predetermined temperature.

Here, the outer surface of the partition member 23 that partitions the outside of the discharge port 26 is in contact with the outside air, and the discharge of the cool air also cools the partition member 23, so that dew condensation occurs on the partition member 23 and the outer surface. To try. However, since the partition member 23 is formed of a hard synthetic resin having a low thermal conductivity, the temperature difference between the outer surface of the partition member 23 and the outside air can be reduced, and dew condensation on the partition member 23 itself is suppressed. (Because the rear end portion 23B narrows the amount of cool air to the outer portion of the honeycomb material 27, this also makes it difficult for dew condensation to form on the partition member 23.)

The outer surface member 3 and the inner surface member 4 are also connected by a connecting member 6 formed of a hard synthetic resin having a low thermal conductivity, and are exposed at the lower side without contacting the connecting member 6. do it
The corners 4A of the inner surface material 4 are also projected portions 23C of the partition member 23.
The dew condensation on the inner and outer double-sided materials 3 and 4 is also suppressed. Accordingly, dew condensation can be eliminated without using a heat insulating material as in the related art and reducing the capacity of the dew-proof heater 34 for heating the partition member 23, thereby preventing contamination around the showcase and deterioration of the product, and freezing. Thus, it is possible to form a stable air curtain by preventing the air curtain from being disturbed.

Here, when the fluorescent lamp 33 is turned on , the dew-proof heater 34 is de-energized, but the fluorescent lamp 33 also illuminates the connecting portion 36 between the partition member 23 and the reflector 32 as described above. Therefore, when the fluorescent lamp 33 is turned on, the radiant heat can prevent dew condensation on the connecting portion 36. Therefore, it is possible to maintain the required dew-proof effect while reducing the power consumption of the dew-proof heater 34.

On the other hand, as described above, the protrusion 2
Since the 3C is formed and abuts on the corner 4A of the inner surface member 4, the positioning when the partition member 23 is attached becomes extremely easy. Furthermore, the bending of the corners 4A and the integral molding of the protrusions 23C improve the strength of the inner surface member 4 and the partition member 23 itself, so that the mounting accuracy of the partition member 23 is improved, and the overall stability and height are improved. It is possible to form an air curtain with high accuracy.

FIG. 5 is an enlarged vertical sectional side view of the upper front end of the open showcase 1 to which a partition member 23 having another structure is attached. In this case as well, the partition member 23 is similarly extruded from a hard synthetic resin, but its main body is an internal hollow formed by an inner wall 51 and an outer wall 52 provided outside the inner wall 51 at intervals. The air layer 53 is formed between the inner and outer walls 51 and 52.
The other structure is the same as described above.

According to this structure, the air layer 53 inside the partition member 23 serves as a heat insulating layer, and the partition member 23 can reduce the temperature difference between the outer surface of the outer wall 52 that comes into contact with the outside air and the outside air. Dew condensation can be more favorably suppressed.

FIGS. 6 and 7 are enlarged longitudinal side views of the upper front end of the open showcase 1 to which a partition member 23 having another structure is attached. Also in this case, the partition member 23 has the inner wall 51, the outer wall 52, and
Although the air layer 53 is formed, only the inner wall 51 is formed of a hard synthetic resin, and the outer wall 52 is formed of a soft synthetic resin while curving outward as shown in FIG.
Also formed integrally from the upper end of 3C over the hard engaging groove 23D (double extrusion molding).

According to the partition member 23, in addition to the above,
As shown in FIG. 6, since the outer wall 52 of the partition member 23 is in close contact with the lower surface of the connection member 6 of the heat insulating wall 2, contact between the connection member 6 and the outside air can be prevented. Therefore, the effect of preventing dew condensation on the partition member 23 and its surroundings can be further improved.

FIG. 8 shows a partition member 23 having still another structure. The structure of each part of the partition member 23 in this case is the same as that of FIG.
Only the root portion 54 on the front side of the projection 23C is formed of a soft synthetic resin (double extrusion molding).

According to this structure, it is possible to arbitrarily change the angle of the partition member 23 as shown by a broken line in FIG. 8 in addition to the case of FIG. Therefore, it is possible to adapt to a plurality of types of showcases having different heights, and it is possible to increase versatility and reduce parts costs.

[0040]

As described above in detail, according to the first aspect of the present invention, since the partition member for partitioning the outside of the discharge port is formed of a material having a low thermal conductivity, the surface of the partition member in contact with the outside air and the outside air are separated. Can be reduced, and dew condensation on the partition member can be suppressed. In addition, the outer surface material and the inner surface material are connected by a connecting member having a low thermal conductivity , and are exposed without contacting the connecting member.
Since the end of the exposed inner surface material is covered with the partition member, dew condensation on the inner and outer surface materials can be suppressed. Therefore, it is possible to prevent the contamination around the showcase and the deterioration of the product while reducing or eliminating the heat insulating material and reduce the capacity of the dew-proof heater, and to form a stable air curtain.

According to the second aspect of the present invention, in addition to the above , the corner of the inner surface material exposed without contacting the connecting member is formed.
Is bent , and the partitioning member is integrally formed with a projection abutting on this corner, so that positioning when the partitioning member is attached is facilitated. In addition, since the strength of the inner surface material and the partition member itself is improved by forming the corners or the protrusions, the mounting accuracy of the partition member is improved, and a stable and high-precision air curtain can be formed. It becomes.

According to the third aspect of the present invention, the outside of the discharge port is
The connection between the partitioning member and the reflector is also illuminated by an illumination lamp
At the same time, when the light is turned off, the connection portion is heated.
Power to the anti-dew heater
During lighting, the connection between the partition member and the reflector is
Heat by radiant heat, and when turned off, heat with dew-proof heater
Can be

Therefore, the power consumption of the dew-proof heater can be reduced.
While effectively preventing condensation on the above-mentioned connection parts that come into contact with outside air.
To prevent contamination around the showcase and product deterioration.
As well as forming a stable air curtain
It is a function.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view of an open showcase showing an embodiment of the present invention.

FIG. 2 is an enlarged vertical sectional side view of an upper portion of a front end of an open showcase.

FIG. 3 is an enlarged vertical sectional side view of an upper front end of an open showcase in a state where a fluorescent lamp is turned on.

FIG. 4 is a timing chart illustrating turning on / off of a fluorescent lamp and energization control of a dew-proof heater.

FIG. 5 is an enlarged vertical sectional side view of an upper front end of an open showcase to which a partition member having another structure is attached.

FIG. 6 is an enlarged vertical sectional side view of an upper front end of an open showcase to which a partition member having still another structure is attached.

FIG. 7 is a vertical sectional side view of the partition member of FIG. 6;

FIG. 8 is a longitudinal sectional side view of a partition member having still another structure.

FIG. 9 is an enlarged vertical sectional side view of an upper front end of a conventional open showcase.

FIG. 10 is an enlarged vertical sectional side view of an upper front end of a conventional open showcase in a state where a fluorescent lamp is turned on.

FIG. 11 is an enlarged vertical sectional side view for explaining a mounting state of a partition member in a conventional open showcase.

FIG. 12 is another enlarged vertical sectional side view for explaining a mounting state of a partition member in a conventional open showcase.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Open showcase 2 Insulation wall 3 Outer surface material 4 Inner surface material 4A corner part 6 Connection member 7 Insulation material 8 Partition plate 11 Storage room 12 Duct 23 Partition member 23C Projection part 26 Discharge port 32 Reflection plate 33 Fluorescent lamp (illumination lamp) 34 Dew-proof heater 51 Inner wall 52 Outer wall 53 Air layer 54 Base

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Takashi Takizawa 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (56) References JP-A-3-75473 (JP, A) Sho-59-74480 (JP, A) Fully open Sho-63-94291 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F25D 17/08 320 F25D 23/00 302

Claims (3)

(57) [Claims] 1. An open showcase in which a cold air curtain is formed at an opening of a storage room, wherein heat insulation is provided between an outer surface material, an inner surface material, and a connection member having a low thermal conductivity for connecting ends of the inner and outer surfaces. A heat insulating wall filled with a material, a partition plate provided at an interval inside the heat insulating wall, a duct formed between the partition plate and the heat insulating wall, and communicating with the duct. And a partition member for partitioning the outside of the discharge port. The partition member is formed of a material having a low thermal conductivity and is exposed without contacting the connection member. The inner surface material
An open showcase characterized in that the end of the cover is covered with a partition member . 2. The inner surface exposed without contacting a connecting member.
2. The open showcase according to claim 1, wherein a corner is bent at an end of the material, and a projection contacting the corner is formed integrally with the partition member. 3. A cold air curtain is formed at the opening of the storage room.
In the open showcase comprising forms, a partition plate provided at intervals inside the insulating wall, this
A duct formed between the partition plate and the heat insulating wall,
Discharge of the air curtain formed in communication with the duct
Port, a reflector provided outside the discharge port,
An illuminator mounted on the inside of the firing plate;
Attached between the firing plates to partition the outside of the discharge port
And a connecting portion between the partition member and the reflection plate
And a dew-proof heater for heating the
The connection part is also illuminated, and when the light is turned off,
An open system characterized by energizing the dew-proof heater
You case.