JPH0328296Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a frozen/refrigerated open case.

(Prior Art) First, a conventional frozen/refrigerated open case will be outlined with reference to FIG.

As shown in the figure, an inner box 2 is assembled at a predetermined interval within an outer box 1 which has a large front opening and is made of a heat insulating panel and has a substantially U-shaped cross section. The air passage 3 is constituted by the above. In this air passage 3, there is an upper wall surface 2 of the inner box 2.
A, a partition wall 4 is provided along the back wall surface 2b, and the bottom wall surface 2c, and this partition wall 4 allows the air passage 3 to be
is divided into a first air passage 3a on the inner box 2 side and a second air passage 3b on the outer box side.

A mounting plate 5 provided with a blower installation opening is disposed in the first air passage 3a so as to divide the first air passage 3a into upper and lower sections. A cooling heat exchanger 6 is disposed in the first air passage 3a so as to be sandwiched between the partition plate 4 and the mounting plate 5. Above the heat exchanger 6, the above-mentioned blower installation port is provided with a blower. 7 are arranged. On the other hand, a blower 8 is disposed within the second air passage 3b.

A pair of air outlets 9a, 9b and a pair of suction ports 10a, 10b are provided at the upper and lower ends of the front opening of the open show case, corresponding to the first air passage 3a and the second air passage 3b, respectively. There is.
In addition, a plurality of shelf boards 11 are provided inside the inner box 2 and extend forward (in the depth direction), and a product display room 13 is configured inside the inner box 2.

When the blower 7 is driven, the air cooled by the heat exchanger 6 (hereinafter simply referred to as cold air) flows through the air outlet 9.
a, and most of it is sucked into the suction port 10a (indicated by a solid arrow 12a). On the other hand, most of the air blown out from the air outlet 9b by the drive of the blower 8 is sucked into the air inlet 10b (indicated by a broken line arrow 12b). An air curtain is formed by the cold air 12a and the air 12b.

(Problems to be Solved by the Invention) By the way, in the above-mentioned conventional freezing/refrigerating open shower case, the air curtain prevents heat from entering from the outside, and also prevents the cold air 12a from entering as shown by the solid arrow. It is circulated to the product display room 13. That is, a part of the cold air 12a blown out from the air outlet 9a is circulated within the product display room 13 to cool the product display room 13.

However, the air curtain (especially the cold air 12a) has a large temperature difference between the temperature near the outlet 9a and the temperature near the suction port 10a, and the cold air 12a and the air 12b mix near the bottom of the air curtain. There is a temperature difference of approximately 3 to 5° C. between the upper and lower portions of the container, which is disadvantageous in terms of product freshness management. In particular, when the shelf board 11 is inclined or the depth dimension of the shelf board 11 is short, there is a problem that the temperature difference between the upper part and the lower part of the product display room 13 becomes extremely large.

On the other hand, there is a large difference between the blowout temperature of the air curtain and the temperature inside the product display room 13, and the temperature near the air curtain suction port 10a is high. There is a problem that cooling capacity is required.

(Means for solving the problem) The present invention has a large front opening, circulates air through a ventilation passage formed between an inner box and an outer box that constitute a product display room equipped with shelves, In the frozen/refrigerated open show case whose front surface is covered with an air curtain, the shelf board is provided with a plate body extending in the depth direction and a lower surface of the plate body, and extends in the depth direction and is open at both ends. The air passage is divided into a first air passage on the inner box side and a second air passage on the outer box side, and at least the first air passage has a cold air passage. is circulated,
A cold air passage hole is provided on the back side of the inner box to communicate the first air passage and the product display room, and the cold air passage hole is provided in the back side of the inner box to communicate with the first air passage and the product display room. The first ordinary path and the duct portion are communicated through a hole, and the product display room is cooled by the cold air circulating through the first air path,
The refrigerator/freezer open case is characterized in that the air curtain is formed by air circulating through the second air passage.

(Example) The present invention will be explained below using examples.

Referring to FIG. 1, inner boxes 2 forming a product display room are assembled at predetermined intervals into an outer box 1 which has a large front opening and is made of heat insulating material and has a substantially U-shaped cross section. The outer box 1 and the inner box 2 constitute a wind passage 3. Inside this air passage 3, there is a top wall surface 2a, a back wall surface 2b, and a bottom wall surface 2 of the inner box 2.
A heat-insulating partition wall 4 is provided along the line c, and the partition wall 4 divides the air passage 3 into a first air passage 3a on the inner box 2 side and a second air passage 3b on the outer box side. ing.

An air outlet 9b and an air inlet 10b are provided at the upper and lower ends of the front opening of the open show case, respectively, corresponding to the second air passage 3b. Further, the tip of the ceiling portion of the first air passage 3a is closed, and a suction port 10a is formed at the lower end.

A mounting plate 5 having a blower installation opening is disposed in the first air passage 3a so as to divide the first air passage 3a vertically and horizontally. First wind passage 3
A cooling heat exchanger 6 is disposed so as to be sandwiched between the partition plate 4 and the mounting plate 5, and a space on the left side of the mounting plate 5 (a space where the heat exchanger 6 is not disposed)
The lower end of is occluded. Above the heat exchanger 6, a blower 7 is arranged at the above-mentioned blower installation port. On the other hand, a blower 8 is disposed within the second air passage 3b.

A cooling air passage hole 1 is provided in the back wall surface 2b of the inner box 2 for communicating the first air passage 3a and the product display room 13.
4 is drilled. One end of a shelf board 11 extending forward (in the depth direction) is supported on this back wall surface 2b.

Here, the structure of the shelf board 11 will be explained with reference to FIG.
A bracket 112 is attached for attachment to (one not shown). A reinforcing member 11 for reinforcing the plate body 111 is provided on the front lower surface of the plate body 111.
3 is attached to extend in the lateral direction. Further, on the lower surface of the plate 111, at the rear of the reinforcing member 113, a plate 114 having the same width (lateral direction) as the plate 11 is arranged in several places parallel to the lower surface of the plate 111.
It is supported and arranged by 1. And plate 1
11 and the plate body 114 define a passage space. A hinge (not shown) is attached to the rear end of the plate 114.
A plate body 115 whose other end is bent is supported so as to extend diagonally downward, and a permanent magnet 116 is fixed to the other end. And the side wall surfaces of the plate body 115 and the inner box 2 (not shown)
The communication path is defined by .

The above-mentioned shelf board 11 is supported by the bracket 112.
The device can be installed at a desired location on the back wall surface 2b of the inner box 2, and when the shelf board 11 is attached to the back wall surface 2b, the plate body 115 can be attached to the plate body 1 by means of a hinge.
14, the inclination angle of the plate 115 can be changed freely. Therefore, plate 1
The other end of the plate 115 can always be in contact with the back wall 2b of the inner box 2, and the other end of the plate 115 is fixed to the back wall 2b by a permanent magnet 116.

On the other hand, when the shelf board 11 is attached to the back wall surface 2b, the first air passage 3 is
A is connected to the product display room via a communication path and a passage space. As shown in FIG. 1, a cold air passage port 15 is provided in the upper wall surface 2a of the inner box 2.

Referring to FIGS. 1 and 2, when the blower 7 is driven, the cold air cooled by the heat exchanger 6 passes through the cold air passage hole 14 provided in the inner box 2 and passes through the passage space. The cold air is discharged into the product display chamber 13 from the front end opening of the product display chamber 13, and the cold air is also discharged into the product display chamber 13 through the cold air passage port 15 (indicated by a solid line arrow 16a). Most of the cold air 16a discharged into the product display room 13 is sucked in through the suction port 10a. On the other hand, the wind blown out from the blower outlet 9b by the drive of the blower 8 is generally sucked in from the suction port 10b (indicated by a broken line arrow 12b). An air curtain is formed by the wind 12b passing through the second wind passage 3b.

As mentioned above, since the cold air flows toward the outside of the product display room, this cold air can also prevent outside air from entering, and the air curtain blocks this cold air so that it flows outside the product display room. Yes, it will be released.

(Effects of the invention) As explained above, according to the frozen/refrigerated open show case of the invention, the cold air from the heat exchanger is sent to the product display room through the communication passage and passage space provided in the shelf board. This makes it possible to maintain a uniform temperature in the product display room. In addition, since the cold air is blown out from the lower part of the shelf board through the communication path and passage space, the temperature in the product display room becomes uniform without being affected by the depth dimension of the shelf board, the angle of the shelf board, etc.

On the other hand, as mentioned above, the cold air is sent directly to the product display room through the communication passage and passage space, and the temperature of the product display room is not determined by the air curtain blowout temperature. The difference between the temperature of the product display room and the temperature of the cold air is small, and it can be considered that the temperature of the cold air is almost equal to the temperature of the product display room. Therefore, since the temperature of the heat exchanger can be made higher than before, there is also the advantage that the refrigerator can be made smaller.

Furthermore, in the present invention, one end of the second plate portion is connected to the first end.
It is fixed to the second board through a hinge and has a permanent magnet at the other end of the second board, so it is necessary to move the shelves in order to increase the number of shelves in the product display room. Even if this occurs, the angle of the second plate part can be easily changed, and it is also extremely easy to fix it to the back surface of the inner box.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing an embodiment of the freezer/refrigerator open shelf case according to the present invention, Fig. 2 is a perspective view showing the main parts of the shelf board used in the invention, and Fig. 3 is a conventional freezer/refrigerator. FIG. 3 is a sectional view showing an example of an open show case. 1...Outer box, 2...Inner box, 3...Air passage, 4...
...Partition plate, 5...Mounting plate, 6...Cooling heat exchanger,
7, 8...Blower, 9...Air outlet, 10...Suction port, 11...Shelf board, 13...Product display room, 14...
...Cold air passage hole, 15...Cold air passage port.

Claims (1)

[Scope of utility model registration request] The refrigeration system has a large front opening, circulates air through a ventilation path formed between an inner box and an outer box that constitute a product display room equipped with shelves, and covers the front side with an air curtain. In the refrigerated open storage case, the shelf board includes a plate body extending in the depth direction, a mounting portion for detachably attaching the plate body to the inner box, and a mounting portion attached to the plate body on the underside of the plate body. a first plate part arranged at a predetermined interval and forming a passage space with the plate body; one end fixed to the first plate part via a hinge, and a permanent magnet attached to the other end; the air passage is divided into a first air passage on the inner box side and a second air passage on the outer box side, and at least the first air passage is divided into a second air passage on the outer box side.
Cool air is circulated through the air passage, and a plurality of cold air passage holes are provided on the back side of the inner box to communicate the first air passage and the product display room. With the shelf board attached to the mounting portion, the other end of the second plate portion is adhered to the inner box by the permanent magnet, thereby attaching the second plate portion and the side surface of the inner box. A communication passage is formed by the cold air passing hole, the communication passage, and the passage space, and the cold air circulating in the first air passage is sent to the product display room, and the cold air is sent to the product display room through the cold air passage hole, the communication passage, and the passage space. A freezing/refrigerating open case, characterized in that the air curtain is formed by circulating wind.