JPH0336861Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a refrigerated case that can maintain a humidified storage or display space for articles.

As an example of a refrigerated case, as shown in FIG. 1, the inside of the case body 1, which is separated from the outside air by a transparent glass plate 2, a heat insulating plate, etc., is divided into a product display room 3 and a cooling air passage for cooling this display room 3. There is a closed type refrigerated case in which air is circulated between these by a blower. FIG. 2 is a sectional view of this refrigerator case. Below the product display room 3 is a cooling air passage 4 for sending out and returning cold air.
is formed. That is, in the cooling air passage 4, a refrigerant evaporator 6 of a refrigeration circuit (not shown) is provided so as to extend along the length of the case, and a blower 5 for ventilation circulation is provided. Suction from 7, cooled and then air outlet 8
It is now possible to send it from Product display room 3
A shelf 9 is installed inside so that products can be cooled and displayed. Further, the rear side of the product display room 3 is made openable and closable with a sliding door 10 made of a transparent glass plate or the like.

Since such a refrigerating case uses only the refrigerant evaporator 6 in the refrigeration circuit as a cooling method, the dehumidification effect of the refrigerant evaporator 6, that is, the moisture in the case freezes on the refrigerant evaporator 6, causing the relative humidity inside the case to deteriorate. Humidity is gradually decreasing, and even though the temperature is maintained at low temperatures, there are problems with products becoming thinner or deteriorating due to drying out.

In general, the most effective temperature and humidity for preventing problems such as loss of weight and deterioration in meat, delicatessen dishes, or high-end confectionery (cakes, etc.) is 0°C to 2°C, 85
It is said to be ~90%, but the reality is that humidifying refrigerated cases that satisfy this condition are too expensive to mass produce.

In this invention, a small ice maker is installed in a part of the case, and the ice pieces obtained by this ice maker are collected in a cooling air passage that has a corrugated plate inside that prevents the ice pieces from coming into close contact with each other. The purpose is to create stable low temperature and high humidity conditions by circulating ventilation through the gaps between the pieces, and to solve problems such as wear and deterioration of the product.

Examples of the present invention will be described below.

FIG. 3 shows a cross-sectional view of the main structure of the present invention, and FIG. 4 is a cross-sectional view taken along the line A--A.

A closed type case body 1 has a product display room 3 whose periphery is covered with a transparent glass plate 2, and a partition wall 11 made of a heat insulating material is provided at a constant interval from the side wall and the top wall, and a partition wall 11 is formed between the side walls and the top wall. A space, especially a space between the upper wall of the case body 1 and the partition wall 11 is used as a cooling air passage 4, and an ice maker 12 is arranged in the space between the side wall of the case main body 1 and the partition wall 11. Below the product display room 3 is a bottom plate 1 made of heat insulating material.
A machine room 14 is constructed by partitioning into three parts.

The ice maker 12 is a crusher type (or auger type)
This is a well-known thing called. Briefly, a hollow annular body is created by closing the space between a cylindrical cylinder 121 and an outer cylinder 122 at both ends, and this hollow annular body has a refrigerant inlet 123 at one end and a refrigerant outlet 124 at the other end. A refrigerant evaporator is provided. A screw rotor 126 fixed to a rotating shaft 125 is concentrically and rotatably mounted inside the inner cylinder 121, and the lower end of the inner cylinder 121 is closed. Further, a water pipe 15 is introduced into the inner cylinder 121 so that a constant amount of water is always supplied. The rotating shaft 125 is connected to the output shaft of the motor 16.

When the refrigeration circuit consisting of refrigerant compressor 17 - refrigerant condenser 18 - capillary 19 - ice maker 12 - refrigerant compressor 17 is formed, the water in the inner cylinder 121 is gradually cooled, and as it moves upward, the inner wall of the inner cylinder 121 cools. Freeze to. However, because the screw rotor 126 rotates at a low speed along the inner wall of the inner cylinder 121 (or rotates for a short time at regular time intervals), the frozen ice is peeled off and sent above the inner cylinder 121. The ice pieces accumulated above the inner cylinder 121 are discharged from the upper end opening of the inner cylinder 121 and supplied onto one end of a dew pan 20 provided on the partition wall 11 and extending perpendicularly to the air blowing direction. .

This ice making operation is performed continuously, and the inner cylinder 121
The group of ice chips discharged from the dew pan 20 gradually moved to the right in FIG. The space between the duct plate 21 and the duct plate 21 is filled with ice pieces. Note that between the dew pan 20 and the duct plate 21, net plate-shaped wire guards 22, 22 are provided in the length direction to prevent the ice pieces on the dew pan 20 from falling and to define the movement path thereof. ing.

In the cooling air passage 4, several blowers 5 are installed at intervals in the length direction of the case, and blow air through the gaps formed between the pieces of ice on the dew tray 20 as shown by the arrows in FIG. Ventilation circulation is performed between the product display room 3 and the cooling air passage 4. Therefore, the ice pieces on the dew tray 20 gradually melt. In the present invention, the amount of ice produced per unit time is approximately melted while the ice pieces discharged onto the dew pan 20 move while accommodating and reach the right end in FIG. The setting is made so that the ice flakes do not come into contact with each other, and there are no large gaps in the middle. Considering that the ice layer becomes thinner as it approaches the right end in FIG. 3 due to melting, the duct plate 21
is inclined so that the distance between it and the dew pan 20 becomes smaller as it approaches the end in the moving direction of the ice pieces. An ice fall duct 23 is provided at the end of the dew pan 20.
is provided, and unmelted ice pieces are discharged into a drainage tank 24. In addition, between the dew pan 20 and the duct plate 21, a space is divided in the length direction for the ice pieces to pass through, in order to prevent ice pieces from coming into close contact with each other and blocking the space between them. However, several corrugated plates 25 are provided to receive ventilation vertically. Of course, this corrugated plate 25
A large number of ventilation holes are provided so as not to impede the circulation of air by the blower 5.

As described above, in the present invention, ice pieces made by the ice maker installed in the case are accumulated in the cooling air passage, and while these ice pieces are melted, ventilation is circulated through the gaps between the ice pieces. Since each piece of ice has a large surface area, the inside of the product display room 3 is cooled and humidified sufficiently to satisfy the above-mentioned most effective temperature and humidity conditions.

Of course, the present invention is not limited to the embodiments described above, and various modifications are possible. Furthermore, the present invention is applicable not only to the refrigerating case shown in FIG. 1, but also to any other closed type refrigerating case and open type refrigerating case having a partition structure using an air curtain.

As explained above, according to the present invention, an ice maker that continuously discharges ice pieces, a dew tray, an ice falling duct, and a corrugated plate are combined, and new ice made by the ice maker is moved one after another. Therefore, the ice pieces do not stick together due to their own weight and block the ventilation passage. This allows the contact area of the ice pieces with respect to the ventilation passing between the ice pieces to remain large, so that the inside of the case can be cooled and sufficiently humidified.

In addition, since the water temperature in the ice making machine is 0°C, bacteria other than psychrophilic bacteria are sterilized and clean ice is obtained. Furthermore, since the corrugated plate is provided, the ice pieces do not stick together and block the space between them, allowing stable cooling and humidification. Furthermore, compared to the conventional system in which air is cooled through a refrigerant evaporator, the refrigerant evaporation temperature in the ice maker can be high, so the coefficient of performance of the refrigeration circuit is high and energy can be saved.

[Brief explanation of the drawing]

Fig. 1 is an external view of an example of a closed type refrigerated case, Fig. 2 is a sectional view of the refrigerated case shown in Fig. 1, and Fig. 3 is an outline of an embodiment in which the present invention is applied to the refrigerated case shown in Fig. 1. 4 is a sectional view taken along line A-A in FIG. 3; FIG. In the figure, 2 is a transparent glass plate, 3 is a product display room, and 4
is a cooling air passage, 12 is an ice maker, 14 is a machine room, 17
is a refrigerant compressor, 18 is a refrigerant condenser, 20 is a dew pan, 21 is a duct plate, 22 is a guard wire, 25
is a corrugated plate.

Claims (1)

[Scope of utility model registration request] The case body is made of a heat insulating material and has a front surface and a rear surface and defines an internal space inside, and the case body is positioned so as to divide the internal space into an upper space and a product display room. A dew pan extending from one end to the other end in the longitudinal direction is provided between the front and rear surfaces of the interior, and a dew pan that is parallel to the longitudinal direction of the dew pan is provided on the upper space side of the dew pan. A corrugated plate is provided that extends to divide the upper space into a plurality of longitudinal spaces, and further, a corrugated plate is provided on one longitudinal end side of the dew tray to continuously insert ice pieces into the plurality of longitudinal spaces. A crusher-type ice maker is provided for supplying ice cubes, while an ice dropping duct for discharging unmelted ice pieces is provided at the other longitudinal end of the dew tray. A refrigerating case characterized in that a blower for circulating cooling air through the supplied ice chips and the product display room is installed at the rear of the dew pan adjacent to the rear surface of the case body.