JPH1151541A - Open showcase - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the cooling efficiency, and to reduce the noise level by providing a conical air-direction member with its apex downward in a ceiling part duct at the position corresponding to an upper part of a blow-up duct to smooth the flow of the cold air in the duct. SOLUTION: An air-direction member 14 is mounted in a ceiling part duct 12 corresponding to the upper part of approximate centers of blow-up ducts 8, 8. The air-direction member 14 changes the direction of the cold air blown from the lower part of the lift duct 8, and is conical in shape with an apex at the center. The air-direction member 14 is fixed to a top plate 5 with its apex downward. The cold air blown up from the lower part of the blow-up duct 8 against the top plate 5 is spread in the horizontal direction along the air-direction member 14 and enters the ceiling part duct 12 to change the air direction toward a cold air outlet. An inconvenience that the cold air flow is disturbed, is solved, the smooth cold air flow is formed to improved the cooling efficiency and to reduce the noise level.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an open showcase in which a hollow columnar duct is erected in a storage room.

[0002]

2. Description of the Related Art Conventionally, an open showcase of this type has been disclosed in, for example, Japanese Patent Publication No.
/ 08). That is, the open showcase 100 will be described with reference to FIGS. The open showcase 100 is installed in a store such as a supermarket and displays products while cooling products for sale. In a storage room (not shown), a plurality of shelves are erected vertically at predetermined intervals and, for example, one of the right and left One surface and the front and rear surfaces are open.

In the storage room, a hollow cylindrical duct 10 is provided.
7 and 107 are provided at predetermined intervals, and cold air blowing ducts 108 and 10 are provided in the columnar ducts 107 and 107.
8 are formed respectively. Then, the cool air is blown up from the respective cool air blow-up ducts 108, 108 into the ceiling duct 112 provided inside the top plate 105, and from a cool air outlet (not shown) provided at the upper edge of the opening of the storage room,
Cold air inlet (not shown) provided at the lower edge of the opening of the storage room
Cold air is blown out toward.

As a result, a cool air curtain is formed at each opening of the storage room, and a part of the cool air curtain circulates in the storage room to cool the storage room to a predetermined temperature.

[0005]

However, the cool air that has risen substantially vertically in the cool air blow-up duct 108, when flowing into the ceiling duct 112, collides with the top plate 105, and the wind is directed substantially horizontally in the horizontal direction. Is changed, when flowing into the ceiling duct 112 from the cool air blowing duct 108, a large turbulence occurs in the flow of the cool air. For this reason,
There has been a problem that noise is generated by the turbulence of the air, and the cooling efficiency is also reduced because the flow velocity is reduced.

The present invention has been made to solve the above-mentioned conventional technical problem, and has an open showcase in which the flow of cool air in a duct is smoothed to improve the cooling efficiency and reduce noise. The purpose is to provide.

[0007]

In other words, the open showcase of the present invention has a vertical upflow duct in an internal hollow columnar duct member erected in a storage room, and a ceiling section from the upflow duct. Cool air is blown up to the duct, and cool air is blown out from the outlet communicating with the ceiling duct to the opening of the storage room, with the apex facing downward into the ceiling duct at a position corresponding to the upper part of the duct. In this configuration, a cone-shaped wind direction member is provided.

Further, in the above-mentioned open showcase according to the second aspect of the present invention, the apex of the wind direction member is deviated from the center of the blow-up duct.

Further, the open showcase according to the invention of claim 3 is the open showcase according to claim 1 or 2, wherein the wind direction member has a quadrangular pyramid shape.

Further, the open showcase according to the invention of claim 4 is the same as claim 3, wherein the wind direction member is disposed so that the side surface is directed to the corner of the ceiling duct.

Further, the open showcase of the invention of claim 5 is claim 1, claim 2, claim 3, or claim 4.
In addition to the above, a cool air discharge port is formed on the side surface of the columnar duct member, and an upper direction of the cool air discharge port is formed with a wind direction plate projecting obliquely downward toward the storage room.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view of an open showcase 1 of the present invention, FIG. 2 is a top view of the open showcase 1 with a top plate 5 removed, and FIG.
4 is a perspective view of the open showcase 1 showing a state where the air duct 4 is attached, FIG. 4 is a perspective view of a conical wind direction member 14, and FIG. 5 is a plan view of a ceiling duct 12 showing a state where the conical wind direction member 14 is attached. 6 shows a sectional view taken along line AA of FIG. 5, respectively.

The open showcase 1 is installed in a store such as a supermarket, and displays the products for sale while cooling them. The open showcase 1 is provided at an upper part, a top plate 5 made of a heat insulating material, and a machine provided at a lower part. The storage room 2 is defined between the storage room 2 and the storage room 3. The storage room 2 has a wall 6 on one side,
The front and rear surfaces and the other side surface are opened, so that commodities can be taken out from the three-way surface of the storage room 2.

A plurality of shelves 4... Are provided vertically at predetermined intervals in the storage room 2. The shelves 4. It is formed widely as you go. Inside the storage room 2, hollow columnar duct members 7, 7 are provided upright at predetermined intervals, and blow-up ducts 8, 8 are formed in the columnar duct members 7, respectively in the vertical direction. Have been. The shelves 4 are held by the columnar duct members 7,7.

A ceiling duct 12 is formed in the ceiling 11 below the top plate 5, and the ceiling duct 12 communicates with the upper ends of the blow-up ducts 8.
A cool air outlet 13 is formed downward at the periphery of the ceiling portion 11 except for the wall surface 6, and is located at the upper edge of the opening of the storage room 2. The cool air outlet 13 communicates with the ceiling duct 12. ing. A cool air inlet 16 is formed around the lower edge of the opening of the storage chamber 2 except for the wall surface 6 side, corresponding to the cool air outlet 13.

On the other hand, in a machine room 3 provided below the storage room 2, a compressor (not shown) constituting a cooling device is provided.
A condenser, a blower for the condenser, and the like are installed, and constitute a well-known refrigeration cycle together with a cooler in a duct (not shown) provided at the bottom of the storage room 2. The cool air suction port 16 provided at the lower edge of the opening of the storage room 2 is communicated with a duct provided with the cooler.

Here, wind direction members 14 are mounted in the ceiling duct 12 at positions substantially above the centers of the blow-up ducts 8, 8, respectively. The wind direction member 14 changes the wind direction of the cool air blown up from below the blow-up duct 8, and has a conical shape having an apex 15 at the center.
The wind direction member 14 is fixed to the lower surface of the top plate 5 with screws or welding or the like with the apex 15 facing downward.

The cool air blown up in the direction of the top plate 5 from below the blow-up duct 8 enters the ceiling duct 12 while spreading in the horizontal direction along the side surface of the wind direction member 14, and changes the wind direction in the direction of the cool air outlet 13. (Indicated by an arrow in FIG. 6).
17 are mounting pieces.

When the compressor is operated with the above configuration,
The cool air cooled by heat exchange with the cooler is blown up into the blow-up duct 8 by a blower (not shown). The direction of the cool air blown up in the blow-up duct 8 is changed by the wind direction member 14 toward the outlet 13 provided at the upper edge of the storage room 2 in the ceiling duct 12. The cool air whose wind direction has been changed passes through the ceiling duct 12 and is blown out from the cool air outlet 13 toward the inlet 16 provided at the lower edge of the opening of the storage room 2.

As a result, a cool air curtain is formed at each opening of the storage room 2 to prevent or suppress the invasion of outside air from these openings, and a part of the cool air curtain circulates in the storage room 2. Thus, the inside of the storage room 2 is cooled to a predetermined temperature. Then, the cool air sucked from the suction port 16 returns to the duct at the bottom of the storage chamber 2 and repeats the circulation sucked into the blower again.

At this time, since the conical wind direction member 14 is mounted in the ceiling duct 12 at a position substantially above the center of the blow-up duct 8, the cool air that has risen in the blow-up duct 8 is cooled by the top plate 5. The wind direction is changed by the wind direction member 14 as described above without directly hitting the air. That is, the cool air that has risen in the blow-up duct 8 can gradually change its direction in the horizontal direction while spreading along the side surface of the wind direction member 14. As a result, the ceiling duct 12
The turbulence of the cool air flowing into the inside is suppressed, and the noise due to the turbulence of the cool air is eliminated or reduced.

Next, the open showcase 1 in which the attachment position of the wind direction member 14 is changed will be described with reference to FIGS.
In this case, both wind direction members 14 and 14 are connected to the respective blow-up ducts 8 and 8.
Are mounted at positions deviated so as to approach each other. As a result, the distance between each of the blow-up ducts 8 and the two wind direction members 14 and 14 is
The middle side is narrow and the opposite side is wide.

By displacing the two wind direction members 14 and 14 in this manner, it is possible to reduce the amount of cool air flowing toward the center of the ceiling duct 12 and increase the amount of cool air flowing toward both ends. Will be possible. This makes it possible to improve the cooling effect on both sides of the storage room 2 where the cooling capacity tends to decrease.

FIGS. 9 and 10 show an open showcase 1 to which a wind direction member 14A of another shape is attached. In this case, the wind direction member 1 in which the apex 15 is deviated from the center to one side.
4A is used. Then, the wind direction members 14A, 14A are mounted in the ceiling duct 12 at positions corresponding to substantially above the centers of both the blow-up ducts 8, 8, and each vertex 1
5 and 15 are directed toward each other,
A, 14A are attached to the top plate 5.

The shape of the wind direction member 14A reduces the cool air flowing toward the center of the ceiling duct 12 without shifting the mounting position of the wind direction member 14A as shown in FIGS. It is possible to increase the amount of cold air toward.

Further, FIGS. 11 and 12 show the open showcase 1 in which the mounting position is changed by using a wind direction member 14A whose vertex 15 is deviated to one side from the center. In this case, as in FIGS. 7 and 8, the two wind direction members 14A, 14A are mounted at positions close to each other while being positioned above the respective blow-up ducts 8, 8.

As a result, the gap between each blow-up duct 8, 8 and both wind direction members 14A, 14A is narrower on the center side of the ceiling duct 12 and wider on the opposite side. Therefore, it is possible to further reduce the cool air flowing toward the center in the ceiling duct 12 and further increase the amount of cool air flowing in the peripheral direction.

Next, FIGS. 13 and 14 show a showcase 1 to which a wind direction member 14B of another shape is attached. In this case, the wind direction member 14B has a quadrangular pyramid shape,
5 is located at the center of the wind direction member 14B. The wind direction members 14B, 14B are arranged in the ceiling duct 12 at positions corresponding to substantially above the centers of the respective blow-up ducts 8, 8, and the top plate 5
Attach it to the bottom. In this case, the quadrangular pyramid-shaped wind direction member 1
The side surfaces of 4B and 14B face each other in the ceiling duct 12 (FIGS. 15 and 16).

As a result, the wind direction of the cool air that has risen inside the two blow-up ducts 8, 8 can be smoothly moved in the horizontal direction without causing air turbulence along the side surfaces (four directions in this case) of the wind direction members 14B, 14B. Will be able to change direction. Therefore, by directing the side surfaces of the wind direction members 14B, 14B in a direction that requires more cool air in the storage room 2, the amount of cool air in that direction can be surely increased.

FIGS. 17 and 18 show the open showcase 1 in which the mounting direction of the quadrangular pyramid-shaped wind direction member 14B is changed. In this case, the opposite wind direction members 14
B, 14B, the side surfaces of each blow-up duct 8, 8
Is mounted in the ceiling duct 12 at a position substantially above the center of the ceiling duct 12. That is, each wind direction member 14 </ b> B is attached to the top plate 5 so that the side faces are directed to the corners of the ceiling duct 12.

When the cool air that has risen in the blow-up ducts 8 hits the wind direction members 14B, the wind direction of the cool air that has flowed into the ceiling duct 12 is directed toward the corners of the ceiling duct 12. You.

As a result, it is possible to increase the amount of cool air toward the outlet 13 communicating with the corner of the ceiling duct 12 which is the farthest from the blow-up ducts 8, 8. Therefore, it is possible to prevent the temperature at the corner of the opening of the storage room 2 from rising, and to cool the storage room 2 to a predetermined cooling temperature.

Next, FIGS. 19 and 20 show the open showcase 1 in which the mounting position of the quadrangular pyramid-shaped wind direction member 14B is changed. In this case, each wind direction member 14B is attached to the lower surface of the top plate 5 so as to be deviated in a direction closer to each other than the center corresponding to the upper side of the blow-up ducts 8, 8. This allows
As described above, it is possible to reduce the cool air flowing toward the center of the ceiling duct 12 and increase the amount of cool air blown downward from the outlet 13 provided around the upper edge of the storage room 2. Will be able to do it.

Further, FIGS. 21 and 22 show the open showcase 1 in which the mounting position is changed by using a wind direction member 14C in which the vertex 15 is deviated to one side from the center. In this case as well, the two wind direction members 14C, 14C are connected to the respective
Are mounted close to each other in a state where they are located above.

Thus, the cool air flowing toward the center in the ceiling duct 12 can be reduced, and the storage room 2
It is also possible to increase the amount of cool air blown downward from the outlet 13 provided around the upper edge. Also, the cool air whose wind direction has been changed by one wind direction member 14C and the cool air whose wind direction has been changed by the other wind direction member 14C are separated by the ceiling duct 1.
2 can be reliably prevented, and the flow of cool air in the ceiling duct 12 can be made smooth.

Further, the open showcase 1 in which the mounting position is changed by using a wind direction member 14C whose vertex 15 is deviated to one side from the center will be described with reference to FIGS. In this case as well, the two wind direction members 14C, 14C are mounted at positions close to each other with the two wind direction members 14C, 14C located above the respective blow-up ducts 8, 8, as described above.

This makes it possible to further reduce the amount of cool air flowing toward the center of the ceiling duct 12 and to further reduce the amount of cool air blown downward from the outlet 13 provided around the upper edge of the storage room 2. Can be increased. Also, as described above, it is possible to reliably prevent the inconvenience that the cool air whose direction of the wind is changed by the one wind direction member 14C and the cool air whose the direction of the wind is changed by the other wind direction member 14C collides in the ceiling duct 12. In addition to this, the flow of cool air in the ceiling duct 12 can be smoothed.

As described above, since the cone-shaped wind direction member 14 is attached to the ceiling duct 12 at a position substantially above the center of the blow-up duct 8 with the apex 15 facing downward, the blow-up is performed. The flow of the cool air rising in the duct 8 can be smoothly changed in the horizontal direction in the ceiling duct 12 along the side surface of the wind direction member 14. Thereby, the inconvenience that the flow of the cool air flowing into the ceiling duct 12 from the blowing duct 8 is disturbed can be solved.

Further, since the quadrangular pyramid-shaped wind direction member 14C is mounted in the ceiling duct 12 at a position corresponding to the position above the blow-up duct 8, the side surface of the wind direction member 14C is directed in a direction that requires more cool air. This makes it possible to greatly increase the amount of cold air in that direction.

Further, since the quadrangular pyramid-shaped airflow direction member 14C is arranged so that the side faces are directed to the corners of the ceiling duct 12, the corners of the ceiling duct 12 which are the farthest from the blow-up duct 8 are located. The amount of cool air from the outlet 13 communicating with the corner can be increased.

Further, the quadrangular pyramid-shaped wind direction members 14C, 14C in which the apex 15 is deviated outward from the center are connected to the blow-up duct 8.
Is mounted in the ceiling duct 12 at a position corresponding to the upper part of the vehicle, the amount of cool air can be further increased in a direction requiring more cool air.

On the other hand, in the storage room 2, a part of the cool air curtain formed in the opening circulates and the inside of the storage room 2 is cooled to a predetermined cooling temperature. Since it is displayed, cool air is blocked by the displayed products, and it becomes difficult for the cool air to circulate in each shelf 4... For this reason, the sales products displayed on each shelf 4... May not be cooled to a predetermined cooling temperature.

Therefore, as shown in FIGS. 25 and 26, a plurality of cool air discharge ports 9 are formed around the columnar duct member 7 and the upper edge of the cool air discharge ports 9 is provided with the storage chamber 2.
The wind direction plates 10 projecting obliquely inward and downward are formed. By forming the wind direction plate portions 10 obliquely downward, even when no merchandise is displayed on each of the shelves 4,... Has been prevented.

[0044]

As described above in detail, according to the present invention, a vertical blow-up duct is formed in a hollow columnar duct member erected in a storage room, and cool air is supplied from the blow-up duct to a ceiling duct. In an open showcase in which cool air is blown out to the opening of the storage room from an outlet communicating with the ceiling duct, the apex is directed downward into the ceiling duct at a position corresponding to above the blow-up duct. In this state, since the cone-shaped wind direction member is provided, the flow of the cool air rising in the blow-up duct smoothly turns in the horizontal direction along the side surface of the wind direction member when entering the ceiling duct.

As a result, it is possible to effectively eliminate the inconvenience that the flow of the cool air from the blow-up duct to the ceiling duct is disturbed, and to form a smooth cool air flow to improve the cooling efficiency and reduce the noise. It is what becomes.

According to the second aspect of the present invention, in addition to the above, the apex of the wind direction member is deviated from the center of the blow-up duct, so that the direction of the wind direction member is opposite to the direction requiring more cool air. By displacing the apex, it is possible to increase the amount of cool air directed in the direction.

As a result, it is possible to suppress the occurrence of temperature unevenness in the storage chamber and realize uniform cooling.

According to the third aspect of the present invention, in addition to the above inventions, the wind direction member is formed in a quadrangular pyramid shape. It is possible to increase the amount of directed cool air.

As a result, it is possible to more easily and reliably suppress the occurrence of temperature unevenness in the storage chamber, and to realize uniform cooling.

According to the fourth aspect of the present invention, in addition to the above, since the wind direction member is arranged so that the side surface is directed to the corner of the ceiling duct, the ceiling duct having the longest distance from the blow-up duct is provided. It is possible to increase the amount of cool air from the outlet communicating with the corner. As a result, the cooling capacity at the corners of the storage room where the cooling is weakened is improved, and more uniform cooling can be realized.

According to the fifth aspect of the present invention, in addition to the above-mentioned inventions, a cool air discharge port is formed on the side surface of the columnar duct member, and the upper edge of the cool air discharge port projects obliquely downward toward the storage room. The lower part of the storage chamber, in which the cooling is weakened only by the cool air blown from the outlet to the opening, can be cooled by the cool air discharged from the cool air discharge port on the side surface of the columnar duct member. become.

This makes it possible to improve the cooling capacity of the lower part of the storage chamber, and to direct the cool air discharged from the cool air discharge port downward by the wind direction plate at the upper edge. Can be more effectively cooled.

[Brief description of the drawings]

FIG. 1 is a perspective view of an open showcase of the present invention.

FIG. 2 is a plan view of the open showcase with a top plate removed.

FIG. 3 is a perspective view of an open showcase showing a state in which a conical wind direction member is mounted at a position corresponding to substantially above the center of a blow-up duct.

FIG. 4 is a perspective view of a conical wind direction member.

FIG. 5 is a plan view of the ceiling duct showing a state in which a conical wind direction member is attached to a position corresponding to substantially above the center of the blow-up duct.

FIG. 6 is a sectional view taken along line AA of FIG. 5;

FIG. 7 is a plan view of the ceiling duct showing a state in which a conical wind direction member is attached to a position close to each other while being located substantially above the center of the blow-up duct.

FIG. 8 is a sectional view taken along line BB of FIG. 7;

FIG. 9 is a plan view of a ceiling duct showing a state in which a conical wind direction member having a deviated apex is mounted at a position substantially above the center of the blow-up duct.

FIG. 10 is a sectional view taken along line CC of FIG. 9;

FIG. 11 is a plan view of a ceiling duct showing a state in which a conical wind direction member having a deviated apex is attached to a position close to each other while being located substantially above the center of the blow-up duct.

FIG. 12 is a sectional view taken along line DD of FIG. 11;

FIG. 13 is a perspective view of an open showcase showing a state in which a quadrangular pyramid-shaped wind direction member is mounted at a position substantially above the center of a blow-up duct.

FIG. 14 is a perspective view of a quadrangular pyramid-shaped wind direction member.

FIG. 15 is a plan view of a ceiling duct showing a state in which a quadrangular pyramid-shaped wind direction member is attached to a position substantially above the center of a blow-up duct.

FIG. 16 is a sectional view taken along line EE of FIG. 15;

FIG. 17 is a plan view of the ceiling duct showing a state in which the side surfaces of both opposing wind direction members are shifted by 45 degrees and attached to positions substantially above the centers of the blow-up ducts.

18 is a sectional view taken along line FF of FIG. 17;

FIG. 19 is a plan view of a ceiling duct showing a state in which a conical wind direction member in which the side surfaces of both facing wind direction members are shifted by 45 degrees is positioned substantially above the center of the blow-up duct, and attached to a position close to each other; FIG.

FIG. 20 is a sectional view taken along line GG of FIG. 19;

FIG. 21 is a plan view of a ceiling duct showing a state in which a quadrangular pyramid-shaped wind direction member having a deviated apex is attached to a position corresponding to a position substantially above the center of a blow-up duct by displacing side surfaces facing each other by 45 degrees.

FIG. 22 is a sectional view taken along line HH of FIG. 21;

FIG. 23 is a top view of a ceiling duct showing a state in which a conical wind direction member whose top is displaced and whose opposing side surfaces are shifted by 45 degrees is positioned substantially above the center of the blow-up duct, and attached to a position close to each other. It is a top view.

FIG. 24 is a sectional view taken along line II of FIG. 23;

FIG. 25 is a perspective view of a columnar duct member having a plurality of cool air discharge ports formed therearound.

FIG. 26 is a side view of a columnar duct member having a plurality of cool air discharge ports formed therearound.

FIG. 27 is a longitudinal sectional side view of a columnar duct member having a cool air discharge port formed therein.

FIG. 28 is a plan view of a ceiling duct of a conventional open showcase.

FIG. 29 is a sectional view taken along line JJ of FIG. 28.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Open showcase 2 Storage room 4 Shelf 5 Top plate 7 Column-shaped duct member 8 Blow-up duct 9 Cold air discharge port 10 Wind direction board part 11 Ceiling part 12 Ceiling part duct 13 Cold air outlet 14 Wind direction member 14A Wind direction member 14B Wind direction member 14C Wind direction member 15 Apex 16 Cold air inlet 17 Mounting piece

Continued on the front page (72) Inventor Hideki Yamaguchi 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Inside Sanyo Electric Co., Ltd. (72) Inventor Harunobu Iguchi 2-5-5-1 Keihanhondori, Moriguchi-shi, Osaka No. Sanyo Electric Co., Ltd. (72) Inventor Masahiro Sakai 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd.

Claims (5)

[Claims] 1. A vertical blow-up duct is formed in a hollow column-shaped duct member erected in a storage room.
In an open showcase in which cool air is blown up from the blow-up duct to the ceiling duct, and cool air is blown out to the opening of the storage room from an air outlet communicating with the ceiling duct, the position corresponding to a position above the blow-up duct. An open showcase in which a cone-shaped wind direction member is provided in a ceiling duct with its apex facing downward. 2. The open showcase according to claim 1, wherein the apex of the wind direction member is deviated from the center of the blow-up duct. 3. The open showcase according to claim 1, wherein the wind direction member has a quadrangular pyramid shape. 4. The open showcase according to claim 3, wherein a wind direction member is arranged so that a side surface is directed to a corner of the ceiling duct. 5. A cold air discharge port is formed on a side surface of the columnar duct member, and a wind direction plate portion is formed on an upper edge of the cold air discharge port so as to project obliquely downward toward the storage room. The open showcase of claim 1, claim 2, claim 3, or claim 4.