JP2883552B2 - 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 an improved auxiliary wind circuit for taking in a part of cool air from a main wind circuit and blowing it out directly to a lower portion of an inner box.

[0002]

2. Description of the Related Art A conventional open showcase of this type is shown in FIGS.

In this open showcase, a showcase main body 1 is composed of an outer wall 2 having a substantially U-shaped cross section made of a heat insulating material, and an inner box 3 arranged inside the outer wall 2. A plurality of shelves 4 and a lowermost floor plate 5 are installed inside the inner box 3 to store and sell products.

The goods stored in the inner box 3 are the main wind circuit 6
And it is kept cool by the cool air of the auxiliary wind circuit 7. The main wind circuit 6 is formed between the outer wall 2 and the inner box 3, and has an evaporator 8 installed on a back surface 6 a thereof and a blower 9 installed on a lower portion thereof. As shown by the solid arrows in FIG. 3, the cooled air is circulated sequentially through the back part 6a, the upper part 6b, the front opening part 6c, the lower part 6d, and the back part 6a to keep the product cool. On the other hand, the auxiliary wind circuit 7 is formed between the coil cover plate 8a covering the front side of the evaporator 8 and the back surface 3a of the inner box 3, as shown in FIG. As indicated by the arrow, a part of the cool air blown out from the upper part of the evaporator 8 is guided between the coil cover plate 8a and the back part 3a, and this is blown out to the blowout hole 10 formed in the lower part of the back part 3a.
Blows out from the bottom toward the bottom of the inner box 3 to cool the weakened bottom.

[0005]

Generally, in an open showcase, an outer wind circuit 11 through which cooled or uncooled air passes separately from a main wind circuit (inner wind circuit) 6 passing through the evaporator 8. Are formed. The outer wind circuit 11 is formed on one side of the main wind circuit 6 on the back side of the showcase main body 1 as shown in FIG. 5, so that the evaporator 8 in the main wind circuit 6 is As shown in FIG. 1, the display case is arranged so as to be shifted to one side of the showcase main body 1.

In this state, since the cool air is introduced into the auxiliary wind circuit 7, the amount of the cool air blown out from the blowout hole 10 is closer to the outer wind circuit 11, that is, in FIG. However, there is a problem that the distribution of the temperature in the refrigerator cannot be made uniform.

To solve such a problem, as shown in FIG. 6, a coil cover plate 12 having an upper end covered with a cover plate 12a and having a cool air introduction hole 12b formed at a predetermined position.
Has been proposed.

According to this open showcase, the position of the cold air introduction hole 12b is set so that the temperature in the refrigerator becomes uniform, and the cool air flowing from the cold air introduction hole 12b is guided to the auxiliary wind circuit 13, and the air outlet hole is formed. It is blown from the 10.

However, in the former open showcase as well as the former, the evaporator 8 supplies the auxiliary air circuits 7, 1
Since all the cool air introduced into the inner box 3 is guided to collide against the rear portion 3a of the inner box 3, the collision portion of the inner box 3 is excessively cooled, and the inner surface of the inner box corresponding to the collision portion is cooled. However, there is a problem that dew condensation occurs on the surface.

In view of the above-mentioned conventional problems, an object of the present invention is to provide
Open air that can guide cool air through the auxiliary air circuit to the area that requires circulation of cool air, and that sends cool air from the auxiliary air circuit along the inner box to prevent dew condensation on the inner surface of the inner box The purpose is to provide a showcase.

[0011]

According to the present invention, an evaporator is provided on a back surface between an outer wall of a showcase main body and an inner box for accommodating goods, and the evaporator generates the evaporator. A main wind circuit for circulating cold air from the back portion of the showcase body to the upper portion, from the upper portion to the lower portion through the front opening, and sequentially from the lower portion to the back portion, and between the outer wall and the inner box to the side of the evaporator.
The air through which the air not cooled by the evaporator circulates
Outer wind circuit, and the outer wind circuit from the front of the evaporator.
An auxiliary wind circuit which guides a part of the cool air of the main wind circuit between a coil cover plate extending over the front surface of the inner box and a rear portion of the inner box, and blows out the inside of the inner box from a lower outlet hole of the inner box. In the open showcase provided with the above, the auxiliary wind fan extends horizontally from the upper part of the coil cover plate toward the inner box.
Provide a cover plate that closes the upper end of the road, and
The cool air of the main wind circuit is blown toward the outer wind circuit by the auxiliary wind.
It is characterized in that a cool air inlet for leading to a circuit is provided.

[0012]

According to the present invention, the inner side of the coil cover plate is opened from the upper side.
To close the upper end of the auxiliary air circuit extends horizontally toward the box
And a cover plate near the outer wind circuit.
A cool air inlet is provided to guide the cool air in the main wind circuit.
The air inlet opens upward, and auxiliary air flows from the main wind circuit.
Cool air introduced into the circuit is guided along the back of the inner box.
On the other hand, conventionally, a cold air inlet is formed in the coil cover plate.
Introduced so that it collides toward the back of the inner box
Is done. Therefore, comparing the two, the conventional cold air inlet
The rear part of the inner box facing the
There is a possibility of cooling locally. In contrast,
In Ming, the introduced cool air flows along the back of the inner box,
There is no cooling.

Generally, steam is placed on the back side of the showcase body.
Outer that does not pass through the main wind circuit where the generator is located and the evaporator
Since the wind circuits are arranged side by side, the evaporator
The inside of the compartment where it is located cools down well, while the outer wind circuit
The inside of the warehouse opposite to the above is cooled more.

[0014] Such a non-uniform temperature distribution in the refrigerator is eliminated.
From the front of the main wind circuit (the front of the evaporator)
An auxiliary wind circuit is provided over the front of the wind circuit.
The auxiliary air circuit has a cool air inlet on the entire upper edge of the evaporator.
Formed or on the front of the evaporator
The cool air flowing from the evaporator to the auxiliary air circuit
Flow to the front side of the
It is in a state that is difficult to be. On the other hand, the present invention
Close the upper end of the breeze circuit with a cover plate and place it on the coil cover plate.
In addition to restricting the inflow of cool air from the entire edge,
Provide a cool air inlet near the outer wind circuit,
A large amount of cool air flows to the front side of the circuit. This
Thereby, the temperature distribution of the whole inside of the refrigerator is made uniform.

[0015]

1 and 2 show an embodiment of an open showcase according to the present invention, in which the same components as those of the conventional example are denoted by the same reference numerals. That is, the showcase body 1 is composed of an outer wall 1 having an open front and an inner box 3 arranged inside the outer wall 1, and a main wind circuit 6 is formed between the outer wall 1 and the inner box 3. I have. An evaporator 8 is installed on a back surface 6a of the main wind circuit 6, and a blower 9 is installed on a lower portion. The cool air generated by the evaporator 8 is provided with a back surface 6a, an upper portion 6b, as shown by a solid line arrow in FIG. The air is blown sequentially through the front opening 6c and the lower part 6d to keep the refrigerator cool. Also, the horizontal direction of the evaporator 8
On the side, an outer wind circuit 11 through which air not cooled by the evaporator 8 circulates passes through, and as shown in FIG. It is arranged in a state shifted to one side.

Such a structure is the same as that of the conventional example, and the feature of the present invention is that the coil cover plate 14 is formed between the back surface 3a of the inner box 3 and the front surface of the evaporator 8. This is in the structure of the auxiliary wind circuit 15.

That is, the coil cover plate 14 is shown in FIG.
Thus, from the front of the evaporator 8 to the front of the outer wind circuit 11
And extends between the coil cover plate 14 and the inner box 3.
An auxiliary wind circuit 15 is formed between the auxiliary wind circuit 15 and the back surface 3a. Ma
In addition, the coil cover plate 14 is placed on the back of the inner box 3 from its upper end.
The auxiliary wind circuit 1 extends in the horizontal direction toward the surface 3a.
5 is formed with a cover plate 14a for closing the upper end. Also,
With this cover plate 14a, the main wind circuit
A rectangular cool air inlet 16 is provided to guide cool air passing through the path 6 to the auxiliary wind circuit 15 . Further, the opening area of the cool air inlet 16 is set to an amount of air that does not disturb the air curtain of the front opening 6c of the showcase body 1 due to the cool air blown out from the blow hole 10.

According to this embodiment, a part of the cool air blown out from the upper end of the evaporator 8 is vertically downward through the cool air inlet 16, ie, as shown by the one-dot chain line arrow in FIG. 3 is guided downward along the rear surface 3a of the
Is blown out into the chamber.

Therefore, the cool air flowing through the auxiliary wind circuit 15 is
It is a fried colliding with the back of the conventional as in box 3, condensation on the inner box inner surface does not occur.

The upper end of the auxiliary wind circuit 15 is covered with a cover plate 14a.
Air from the entire upper edge of the coil cover plate 14
In addition to restricting the inflow, the outer wind
A cool air inlet 16 is provided near the road 11 so that the cool air
More air flows to the front side of the wind circuit 11.
Therefore, the outer wind circuit 11 is cooled sufficiently.
The inside of the refrigerator on the side is surely cooled down,
Can be uniform.

[0021]

As described above, according to the present invention,
Cold air flowing through the auxiliary wind circuit is guided along the back of the inner box,
Because localized cooling of the inner box is prevented, occurrence of condensation is prevented.

Further, the upper end of the auxiliary wind circuit is closed with a cover plate.
To restrict the inflow of cool air from the entire upper edge of the coil cover plate
At the same time, the cool air introduction port of this cover plate near the outer wind circuit
To allow a large amount of cool air to flow to the front side of the outer wind circuit.
I am trying to. As a result, the temperature distribution throughout the
Can be uniform.

[Brief description of the drawings]

FIG. 1 is a sectional view of a showcase according to the present invention.

FIG. 2 is a perspective view showing a main part of the present invention.

FIG. 3 is a sectional view of a conventional showcase.

FIG. 4 is a front view of a conventional showcase.

FIG. 5 is a rear perspective view showing an example of a conventional showcase.

FIG. 6 is a rear perspective view showing another example of a conventional showcase.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Showcase main body, 2 ... Outer wall, 3 ... Inner box, 6 ... Main wind circuit, 8 ... Evaporator, 10 ... Blow-out hole, 14 ... Coil cover plate, 15 ... Auxiliary wind circuit, 16 ... Cold air inlet.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toshinari Nobue, 20 Sandou, Kotobukicho, Isesaki-shi, Gunma Prefecture References Japanese Utility Model 60-65577 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) F25D 17/08

Claims (1)

(57) [Claims] 1. An evaporator is installed on a back portion between an outer wall of a showcase body and an inner box for accommodating goods, and cool air generated by the evaporator is transferred from the back portion of the showcase body to the upper portion and from the upper portion. A main wind circuit that sequentially circulates from the lower part to the back part through the front opening, and the evaporator between the outer wall and the inner box.
Air that is not cooled by the evaporator circulates through one lateral side
Outer wind circuit and the outer wind from the front of the evaporator.
Auxiliary air that guides a part of the cool air of the main wind circuit between the coil cover plate extending over the front surface of the circuit and the rear part of the inner box, and blows out the lower part of the inner box into the inner box through the lower outlet hole of the inner box. in an open showcase having a circuit, a horizontal toward the inner box from the top of the coil cover plate
A cover plate extending in the direction to close the upper end of the auxiliary wind circuit
And the main plate is positioned near the outer wind circuit of the cover plate.
An open showcase provided with a cool air inlet for guiding cool air of a wind circuit to the auxiliary wind circuit .