JP2503243Y2 - Refrigeration case cooling structure - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerated showcase for refrigerating and displaying foods and the like, and more particularly to a so-called newsletter case for refrigerating and displaying fresh seafood of sushi ingredients in sushi shops and the like.

[0002]

2. Description of the Related Art A refrigerating showcase of this type has a display room having at least one surface made of crow and having a see-through interior, and a refrigerating apparatus for cooling, refrigerating the display room by compressing, condensing, expanding and evaporating a refrigerant. However, the refrigeration system is arranged in the machine room.

As for such a device, various structures have been conventionally proposed or used, but in general,
For example, as shown in Japanese Patent Laid-Open No. 62-37665, a refrigerant evaporator is arranged in the display room, and the heat of evaporation of the refrigerant is directly taken from the air in the display room to cool it.

The refrigerant evaporator, which is also called a cooler for its direct use, is generally composed of a refrigerant conduit and a heat transfer promotion plate. When this is provided in the display room, the temperature of the air around the cooler becomes extremely low, air convection occurs in the display room, and the convection advances to maintain the temperature in the display room at a predetermined value.

However, in this type, since the air temperature becomes extremely low in the cooler and the surrounding area, moisture condenses in the same area, and there is an adverse effect that the air in the display room dries. Excessive drying of the air in the display room is not preferable for refrigerating fresh seafood such as sushi material, and therefore, for example, Japanese Utility Model Laid-Open No. 64-41875 (Japanese Utility Model Application No. 62-18775).
No. 132373), there has been proposed a device for preventing drying.

The applicant first made the display room a double structure consisting of an inner box and an outer box, and first cooled the air flowing between the inner box and the outer box with a cooler to display the inside of the inner box. We proposed an indirect cooling type refrigeration system that cools the air in the space by this (Japanese Patent Application No. 1-51857).

[0007]

However, in the conventional device having such a double-structured display room and employing the indirect cooling system, the display room is not dried, but the temperature is easily saturated and the surface of the refrigerated food is There was a problem that the water was easily attached to and sticky. In addition, the windshield of the inner box is in direct contact with the cold air, so the temperature is quite low,
When the outside air invading the inside of the refrigerated food comes into contact when the refrigerated food is taken in and out, the moisture therein condenses to cause fogging, and there is a problem that the generated fogging is difficult to remove. Therefore, an object of the present invention is to solve the above-mentioned problems in the conventional device having such a double-structured display room.

[0008]

In order to achieve this object, according to the present invention, an openable / closable cold air inlet / outlet device is installed in a ceiling cold air passage of a cold air circulation passage defined by an inner box and an outer box of a display room. The ventilation port of the cold air inlet / outlet device is opened to face the inner surface of the upper end of the windshield of the inner box. A flow blocking mechanism, which is provided in the middle of the ceiling cold air passage and blocks the cold airflow flowing through the ceiling cold air passage, is configured to interlock with the cold air inlet / outlet device.

[0009]

[Operation] The cold air passing through the cold air circulation passage is supplied from the outside of the inner box.
Cools the inner box and the display space inside it, but in the ceiling cold air passage where a part of the circulating cold air flows, when the cold air inlet / outlet device is opened, the cool air is blocked by the flow blocking member and flows into the inner box from the ventilation port. . This cool air flows around the inner surface of the windshield and returns to the inside of the ceiling passage from the ventilation hole on the downstream side of the flow blocking member. Since the cool air flowing into the inner box is dry, it removes moisture from the air and the surroundings in the inner box to dry it, and also prevents outside air containing much moisture from adhering to the windshield. When the cold air inlet / outlet device is closed, the flow blocking mechanism is opened in association with this, and the cold air sufficiently flows through the ceiling cold air passage to cool the inner box and its inside from above.

[0010]

Embodiments of the present invention will now be described with reference to the accompanying drawings, in which the same symbols represent the same or corresponding parts. In addition, although the following embodiments apply the present invention to a so-called neta case used in a sushi restaurant or the like, it is of course applicable to a device for refrigerating and displaying fresh seafood of the same kind and other It can also be applied to refrigerated food devices. Therefore, the present embodiment is merely an example,
The present invention is not intended to be limited to this.

First, FIG. 3 is a perspective view of a material case (refrigerating showcase) 1 according to an embodiment of the present invention as seen obliquely from the front, and FIG. 4 is a perspective view of this as seen obliquely from the rear.
The netacase 1 includes an upper display room 2 and a lower machine room 3, and side covers 4, 4 are attached to both ends of a top frame 34 which forms a part of the display room 2 described later in detail.

As shown in FIG. 4, the rear surface of the machine room 3, which is usually located on the sushi chef's side, is formed with a rear cover 8 having ventilation holes 9, which are connected to a refrigerating apparatus to be described later. A power cord 5, a ground wire 6, a power source on / off switch S, and the like are attached, and two drainage pipes 7 are further attached so as to penetrate. Similarly, on the rear surface of the display room 2, 2
A pair of sliding doors 11 are fitted so as to be openable and closable, and are divided into right and left by a center post 10 in the center. The outer windshield 38 of the display room 2 faces the front, that is, the customer side facing the sushi chef, so that the customer can see the inside of the display room 2.

FIG. 1 is a vertical cross-sectional view of the neta case 1 of FIG. 3 taken along a plane perpendicular to the longitudinal direction, and FIG. 2 is a cross-sectional view taken along line II-II of FIG. The internal structure of the neta case 1 including the features of the invention is shown. FIG. 5 is a plan sectional view taken along the line VV of FIG.

As is apparent from FIGS. 1 and 5, the machine room 3 is covered with a heat insulating structure 21, and the heat insulating structure 21 is formed so as to be partially concave. The cooler room 12 is defined. A blower fan 14 and a cooler (evaporator) 15 are arranged in the cooler chamber 12, and these include a compressor 16, a condenser 19 and a condenser 19 arranged in the machine chamber 3 outside the cooler chamber 12. Two condenser fans 18a,
A refrigerating device is configured with 18b.

A blower fan 14 is provided in the cooler chamber 12.
Side 64 and a plurality of wind direction plates 32a that guide the air from the blower fan 14 that divides the side from the cooler 15 side.
2b is provided to guide air entering from a cool air passage, which will be described later, through an inlet 12b to a blower fan 14, to disperse air discharged therefrom to a cooler 15, and to cool the cooled air from an outlet 12a to the cool air passage. Send out. The temperature of the air entering from the inlet 12b is detected by the thermostat 30 via the temperature sensing unit 31, is applied to the electric board 13, and is used for controlling the operation of the refrigeration system.

In particular, as clearly shown in FIG. 5, the fans 18a and 18b supported by a stand integrally formed with the duct forming plate 33 suck the air through the condenser 19 and cool it. However, the air discharged from the fan 18a is directed to and cools the compressor 16 which is elastically supported by the legs 17, which are preferably made of rubber. The warm air discharged from the fan 18b is guided by the duct forming plate 33 and guided forward, and is used to prevent the outer windshield 38 from being fogged, as will be described later.

Referring to FIGS. 1 and 2, the display room 2 which defines a display space 65 above the machine room 3 is mainly composed of an inner box and an outer box whose rear surfaces are closed by a common sliding door 11. The ceiling portion, the bottom portion, the front portion and the both side portions have a double structure, and a cold air circulation passage (described later) is defined between them.

As will be described in detail, the inner box of the display room 2 connects a bottom plate 23 that is inclined and becomes higher toward the rear, a pair of side plates 24 extending upward from both end sides thereof, and upper ends of the side plates 24. It is composed of a long horizontal top plate 36 and an inner windshield 39. The inclined lower end of the bottom plate 23 is bent substantially at a right angle, further extends parallel to the inclined surface to define a groove 66, and the tip inclined in the opposite direction supports the lower end of the windshield 39 fitted with the packing 41a. are doing. Further, the upper end of the windshield 39 to which the packing 41b is fitted is supported by the top plate 36 via a guide 80 having a large number of openings formed in the lower surface. Packing 41a and 4
1b is a continuous U-shaped cross-section packing as described later,
It is for ordinary glass.

The outer box of the display room 2 which surrounds the inner box includes the above-described heat insulating structure 21, a pair of side frames 25 connected to both side ends thereof and extending upward, and a top connecting these upper end portions to each other. It is composed of a frame 35 and an outer windshield 38 whose periphery is engaged and supported by these. As is clear from FIG. 2, the windshield 38 is a multi-layered glass composed of two bent plate glasses, and the lower end to which the packing 37a having a U-shaped cross section is fitted extends parallel to the bottom plate 23. Slanted insulation structure 2
It is supported at the lower end of 1. The heat insulating structure 21 filled with the heat insulating material 27 extends in parallel with the bottom plate 23 to define a lower cold air passage (cold air circulation passage) 20, which is a side cold air passage between the side plate 24 and the side frame 25. While communicating with the passage (cold air circulation passage) 28, it also communicates with the cooler chamber 12. The coldest air cooled by the cooler 15 flows into the cold air passage 20 from the outlet 12a, and the heat insulating material 22 is filled or attached to the lower surface of the bottom plate 23 facing this, and the side cold air passage 28 is provided. A heat insulating material 26 is filled or affixed to the outer surface of the side frame 25 to effectively use cold air.

The top frame 35 supporting the upper end of the outer windshield 38 fitted with the packing 37b is connected to the top cover 34 and fixed to the top plate 36 by the fixing member 4.
2, the ceiling plate 36 and the guide 80 cooperate with each other to define a ceiling cold air passage (cold air circulation passage) 29. Although the fixing member 42 extends in the longitudinal direction of the top plate 36,
It is not so long as to partition the ceiling cold air passage 29. The ceiling cold air passage 29 communicates with the same side cooling passage 28 at the other end (on the left side in FIG. 1) and further communicates with the cooler chamber 12 via a return passage 71.

A front cold air passage (cold air circulation passage) 40 defined between the windshield 39 of the inner box and the windshield 38 of the outer box has a side cold air passage 28 at the right end and the left end in FIG. 28 communicating with the ceiling cold air passage 29
I have also contacted.

With reference to FIGS. 2 and 6A and 6B, a cool air inlet / outlet device or slider 87 provided in the ceiling cold air passage 29 is provided.
The structure of will be described. As described above, the guide 8 is provided on the front portion of the top plate 36 forming the bottom surface and the rear surface of the ceiling cold air passage 29.
0 is attached to the tongue portion 80a as described above.
Receives and fixes the upper end of the windshield 39. The slider 87 which is guided by the guide 80 and moves in the longitudinal direction is U
The web portion 87b has a rectangular cross section, and a large number of rectangular openings 87a (flow blocking mechanism) are formed at predetermined intervals in the web portion 87b. The web portion 87b is the flat plate portion 80b of the guide 80.
However, the same number of rectangular openings (not shown) that selectively overlap the rectangular openings 87b are formed in this area.

A lever 89 is fixed to the lower surface of the web portion 87b of the slider 87 with a screw or the like, and a knob 89 is attached to this.
a is attached. The knob 89a is used when moving the slider 87. A first flow blocking member (flow blocking mechanism) 97 is fixed between the flanges of the slider 87, and notches 87d are formed in the rear side flange portion 87c before and after the flow blocking member 97.

The first flow blocking member 97 is a movable flow blocking member because it is fixed but moves with the slider 87. Corresponding to the movable flow blocking member 97, stationary flow blocking member (flow blocking mechanism)
99 is provided between the rear wall plate of the top plate 36 and the slider 87, and the movable flow blocking member 97 and the stationary flow blocking member 99 cooperate to form an openable / closable flow blocking mechanism. 29 is selectively opened and closed. As shown particularly in FIG. 2, the top plate 36 is
From substantially below the central portion (in cross section) of the ceiling cool air passage 29, a hanging portion 36d extends obliquely downward toward the front surface, and further extends horizontally to form a bottom portion 36a. The front end of the bottom surface portion 36a is inclined upward again and rises.
e and stops at the bent portion 36f.

A plurality of support members 81 are arranged at intervals on the upper surface of the bottom surface portion 36a of the top plate 36, and a cushioning member 83 is fixed thereto. Bent part 36f of the top plate 36
Defines a vent 85 with the windshield 39,
This communicates with the ceiling cold air passage 29 through the rectangular opening 87 a of the slider 87.

Returning to FIG. 2 again, the bottom plate 58 of the machine room 3 is shown.
A rubber pad 57 is attached to the leg 56 projecting downward from the net 56, whereby the news item case 1 is elastically supported. There is an opening 5 at the top of the front cover 52 of the machine room 3.
1 is connected to a hot air passage 50 defined by an air guide 44 covering the front end of the heat insulating structure 21. The warm air sucked and discharged through the condenser 19 by the condenser fan 18b is guided by the duct forming plate 33 to reach the front cover 52,
It is blown out along the outer surface of the windshield 38 through the warm air passage 50. As mentioned above, the windshield 38
Has a multi-layer structure, and the cold air passing through the passage 40 is sufficiently insulated, but the warm air blown out along the outer surface prevents dew condensation and fogging.

As shown in FIGS. 4 and 5, a drain hose 49 extending from the drain pipes 7 located at both ends of the machine room 3.
Is a groove 66 of the bottom plate 23 via a connection pipe (not shown).
(Refer to FIG. 2) It is connected to the drain port (not shown). The groove portion 66 has a function of collecting water in the display space 65, but the floor plate 4 is arranged so as to be substantially flush with the upper surface of the bottom plate 23.
3 is detachably provided. Although not shown, it is common to lay "slatboard", "ginsu" or the like on the upper surface of the bottom plate 23 and the floor plate 43 and put the material on it.

The top cover 34 connected to the top frame 35 is connected to the rear cover 8 via the center frame 10 as shown in FIG. 4, and the top cover 34 has the upper end of the sliding door 11 at its lower part. A rail 55 is formed to receive and guide and support (FIG. 2). Also,
The inclined bottom plate 23 is connected to a part of the heat insulating structure 21 at the upper end and supports the rail portion 53. The rail portion 53 is
It has a slider 54 inside and supports the lower end of the sliding door 11 so as to slide easily. In this way, the sliding door 11 slides in the longitudinal direction of the news item case 1 to be opened and closed,
The material is put in or put out in the display space 65.

Next, the mounting structure of the left and right ends of the windshields 38, 39 will be described. In the exploded perspective view of FIG.
The outer windshield 38 is surrounded by packings 37a, 3
An integral continuous packing 37 including 7b is attached, and both ends thereof are set on a side frame 25 to which a heat insulating material 26 is attached and are covered by the side covers 4.

Like the outer windshield 38, the outer circumference of the inner windshield 39 is also surrounded by an integral packing 41 including packings 41a and 41b. Side plate 24
A mounting plate 91 is adhered to the outer surface of, and a removable reinforcing member 93 is fixed by a screw 94. As shown, the reinforcing member 93 extends toward the bent portion of the windshield 39, and the tip portion 93 a thereof is in contact with the side plate 24. The side plate 24 is formed so as to be easily deformed, and when the reinforcing member 93 is not attached, the side plate 24 is bent and opened outward so that the windshield 39 can be easily assembled. After the windshield 39 is assembled with the packing 41, the reinforcing member 93 is fixed to the mounting plate 91. Since the tip 93a of the reinforcing member 93 is in contact with the side plate 24, the side plate 24 is pressed against the packing 41, and the seal is sufficiently sealed. To be done. As can be fully understood from the above description, the mounting plate 91 and the reinforcing member 93 are in the side cold air passage 28 and also guide the flow of cold air.

In the net case having the above-described structure, when the refrigerating apparatus is operated by the electric board 13, the refrigerant is compressed by the compressor 16 and the refrigerant condensed by the condenser 19 expands and enters the cooler 15. Since the refrigerant takes heat of evaporation from the air sent by the floor fan 14, cooled air, that is, cool air is obtained, and the cool air that has entered the cool air passage 20 from the outlet 12a enters the side cold air passage 28. As described above, the cool air is divided into the cool air flowing through the front cool air passage 40 and the cool air flowing toward the ceiling cool air passage 29.
Flows along the slopes of the 0 windshields 38, 39. This flow flows in the cool air passage 28 on the opposite side, flows into the cooler chamber 15 from the return passage 71, and repeats this. When flowing through the cool air passages 28, 40, 28, the cool air draws heat from the air in the display space 65 through the side plate 24 and the windshield 39 to cool it.

At the same time, the cold air flowing into the cooling passage 29 flows as follows. The position of the lever 89 is adjusted, and the rectangular opening of the guide 80 and the opening 87a of the slider 87 are adjusted.
If they completely match (fully open), the movable flow blocking member 97 and the stationary flow blocking member 99 cooperate to close the ceiling cold air passage 29 (a in FIG. 6). Therefore, on the upstream side of both the flow blocking members 97 and 99, the cool air passes through the opening 87a and further through the ventilation hole 85, and along the inner surface of the windshield 39, the display space 6
Inflow into 5.

The cold air that has flowed in flows along the inner surface of the windshield 39, and the movable flow blocking member 97 and the stationary flow blocking member 99.
On the downstream side of the above, it returns to the cool air passage 29 through the vent 85 and the rectangular opening 87a, reaches the cool air passage 28, joins with another flow, and returns to the cooler chamber 12. Since the cool air is dry because moisture is removed when it is cooled by the cooler 15, it absorbs ambient moisture when flowing along the inner surface of the windshield 39. That is, moisture (condensation,
If frost is attached, it is removed by evaporation. Further, it has a function of a shielding gas and prevents warm air (which flows in when the sliding door 11 is opened) from directly contacting the windshield 39.

Contrary to the above, if the opening of the guide 80 and the rectangular opening 87a are completely displaced (fully closed), the movable flow blocking member 9
7 and the stationary flow blocking member 99 are separated, and the notch 87d is opened. Since the opening 87a is closed, the cold air does not flow into the ventilation port side, passes between the movable flow blocking member 97 and the stationary flow blocking member 99 and through the notch 87d, and as shown in FIG. Passage 2
9 and the display space 65 is cooled from the ceiling.

The adjustment of the ventilation area of the opening 87a is performed steplessly between the fully opened state and the fully closed state described above by operating the lever 89 from inside the display space 65. By appropriately selecting the width of the lever 89 and the width of the lever opening (not shown) of the guide 80, the fully open position and the fully closed position are regulated, and the position of the lever 89 is adjusted as necessary between them. To be done.

[0036]

[Effects of the Invention] Since the cool air inlet / outlet device is provided in the ceiling cool air passage of the cool air circulation passage, and the flow shut-off mechanism interlocking with this is also provided, the flow shut-off mechanism is closed against the opening of the cool air inlet / outlet device. By letting the cool air flow toward the windshield inside the inner box, the humidity of the air inside the inner box can be adjusted, and the inside of the windshield can be prevented from fogging and the fogging can be effectively removed. it can. Further, when the cold air inlet / outlet device is closed, the flow blocking mechanism is completely opened, so that the cold air can sufficiently flow through the ceiling cold air passage, and further, it is possible to prevent uneven flow to the front cold air passage between the windshields. It is possible to effectively cool the windshield and prevent the windshield from being overcooled.

[Brief description of drawings]

FIG. 1 is a sectional view showing a main part of an embodiment of a refrigerated showcase according to the present invention.

FIG. 2 is a vertical sectional view taken along line II-II in FIG.

3 is a front perspective view of the embodiment of FIG.

4 is a rear perspective view of the embodiment of FIG.

5 is a plan sectional view taken along the line VV of FIG.

FIG. 6A and FIG. 6B are individual perspective views of each member constituting the main part of the above-described embodiment.

FIG. 7 is a partial exploded perspective view showing a portion of the above-described embodiment.

8 is a partial cross-sectional view taken along the line VIII-VIII of FIG.

[Explanation of symbols]

1 Neta Case (Refrigerating Showcase) 2 Display Room 3 Machine Room 20 Lower Cold Air Passage (Cold Air Circulation Passage) 21 Heat Insulation Structure That Makes Outer Box with Windshield 38 25 Side Frame That Makes Outer Box with Windshield 38 35 Front Top frame 23 that forms an outer box with glass 38 Bottom plate that forms an inner box with windshield 39 24 Side plate that forms an inner box with windshield 39 36 Top plate that forms an inner box with windshield 39 28 Side cold air passage ( Cold air circulation passage 29 Ceiling cold air passage (cold air circulation passage) 38 Windshield 39 Windshield 40 Front cold air passage (cold air circulation passage) 80 Guide 85 Vent 87 Slider (cold air inlet / outlet device) 87a Rectangular opening (vent) 89 Lever 97 movable blocking member (blocking mechanism) 99 stationary blocking part Material (flow shield mechanism)

Claims (1)

(57) [Scope of utility model registration request] 1. A double-structured display room, which is arranged above a machine room equipped with a refrigerating device and has an inner box and an outer box, each of the inner box and the outer box being a windshield. A refrigerating showcase that has a cold air circulation passage between them and is openable and closable in a ceiling cold air passage defined along the upper edge of the windshield and forming a part of the cold air circulation passage. The cooling air inlet / outlet device is provided with a ventilation opening that faces the inner surface of the upper end of the windshield, and a flow-blocking mechanism that can be opened / closed is provided in the middle of the ceiling cold air passage in cooperation with the cold air inlet / outlet device. Cooling structure for refrigerated showcase characterized by