JPS636373A - Cold-air circulating method of cold counter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a method for circulating cold air in a cold storage case suitable for storing frozen desserts such as ice cream.

(b) The conventional Japanese Patent Application Publication No. 52-22673 (70B18) describes a partition wall with a U-shaped cross section that is spaced apart from an insulating wall, with a product storage area 0 on the inside and a cold air circulation duct on the outside. The upper surface of the product storage foot section is configured so that the cold air flow crosses it, and drainboards are arranged at appropriate intervals above the lower bottom of the partition wall to form a cold air bypass path. A cold air inlet is drilled in the partition wall to introduce a part of the cold air headed for the cold air outlet into the cold air bypass passage, and the outlet side of the cold air bypass passage is always blocked with products so that the cold air flows into the upper suction opening. A refrigeration showcase is shown having a gap that is not closed.

1'l Problems to be Solved by the Invention According to the above-mentioned conventional technology, since the flow rate of the cold air crossing the upper surface of the storage section is larger than that of the cold air flowing through the bypass path, it is not possible to use a day rasher for the purpose of mass sales. In order to store the ice cream, I put it in a large container with the top open, and put this container in a storage room to freeze and preserve the ice cream. There was a problem that the quality of the cream deteriorated.

B) Means for Solving the Problems The present invention solves the above problems, and its contents will be explained based on an embodiment. Forced circulation cold air flows along the top and bottom surfaces of the top-opening container (151) filled with (q), and the flow rate of the cold air flowing along the bottom surface of the container (+51) is increased, and the amount of cold air flowing along the top surface of the container α9 is increased. Refrigerated showcase with reduced flow rate (Cold air circulation method II).

(E) According to the cold air circulation method of the working example, a large amount of cold air flowing along the bottom wall (15B) of the container (15+) acts to cool the container (151), and the frozen dessert is transferred by heat conduction from the container. (When Q is maintained at a predetermined freezing temperature, -on the other hand, a small amount of cold air flowing gently along the top surface of the container α9 acts to directly cool the surface of the frozen dessert (00), and the radiant heat from outside the container Prevents softening and drying.

(F) Examples A detailed explanation of the present invention will be given below based on the drawings.The fil shown in Fig. 1 is a face-to-face sales type refrigerated showcase called a dipping case, and the insulating wall (2) with an opening on the top
A transparent plate 13++41 is provided on the customer side, that is, the front and top surface, and an opening (5
) and cover the top opening of the heat insulating wall (2) with a lid (5) (6).
), and a machine room αG formed below the heat insulating wall (2) and housing an electric refrigerant compressor (7), a condenser (8), and a blower fan (9).

αυ is a metal partition plate with a U-shaped longitudinal section, which is disposed in the refrigerator at an appropriate distance from the inner surface of the heat insulating wall (2);
A plate fin type cooler (
17J and an axial blower fan α3, and a storage room αa that accommodates a plurality of stainless steel containers called vats (151) filled with frozen desserts such as ice cream (0). The partition plate α is formed inside the refrigerator.
D is the vent α7 at the bottom of both front and back walls (IIA) CIIB)
)aF5 and the supply path (
The back wall (IIB) opposite to the supply channel (14A)
14A) Restrict the flow of cold air protruding upward into the interior and store most of this cold air through the vent u8
A buckle portion α9 that also serves as a directing portion that is oriented in the iae is provided. This buckle portion σ9 may be formed by providing a step at the rear corner of the partition plate U as shown in FIG. Each container α
9 has an open top surface, and a 7 flange (
By installing each of the seven flanges (15A) on a frame-shaped support member (2) in the storage room αυ so that the two flanges (15A) are in contact with or close to each other, they are supported in a floating state in the storage room αe, and the bottom of the The wall (15B) is the bottom wall (1
1('') with an interval to form a cold air flow path. , a cold air outlet ■ between the upper end of the back wall (IIA) of the partition plate aD
form. is the return path (14B) of the cold air passage αJ.
A long and narrow wind direction plate installed directly above the insulating wall (2).
A cold air suction port 24) is formed between the partition plate αD and the front wall (IIA) of the partition plate αD. In addition, numeral 4 shown in Fig. 3 is an anti-icing film formed around the upper opening of the heat insulating wall (2).
It is formed by applying an anti-icing paint known as icing, which makes it easier to remove water adhering to the upper opening surface.

Next, cold air circulation will be explained based on the arrows in FIG.

The cold air that has been heat exchanged in the cooler α2 is sent to the supply path (14A) by the blower fan 03VC, and flows upward by the buckle part Q'J, where the cold air with a low flow rate heads toward the outlet device and the vent hole (which serves as the supply port). 181 into the bottom of the storage room αQ, and the cold air with a large flow rate is divided so that the ratio is about 1:1O.The divided cold air is introduced into the storage room haze from the vent α&, which serves as an introduction port. The cold air introduced into the lower part of the container (151) flows along the bottom wall (15B) K of each container (151), crosses the lower part of the storage room αe, and then passes through the return path (14B) from the vent αη, which serves as a return port, to the cooler. 0z and will be cooled again. - On the other hand, among the divided cold air, the cold air blown out from the air outlet @ onto the upper surface of the storage chamber (161) is
After flowing along the top surface of each container (151) at an extremely slow speed of about 0.1 to 0.2 l, it reaches the return path (14B) from the suction port c! It will join the cold air that passed through it.

According to this cold air circulation method, the bottom wall of the container (+51
A large amount of cold air flowing along the container α9 acts to cool the container α9, and the frozen dessert (0
On the other hand, a small amount of cold air flowing gently along the top surface of the container (151) acts to directly cool the surface of the frozen dessert (00), and the radiant heat from outside the container softens the frozen dessert (00). and prevent dryness.

(G) Effects of the Invention According to the present invention described above, it is possible to maintain the frozen dessert in the container at freezing temperature with a large amount of cold air flowing along the bottom of the container, and it is also possible to maintain the frozen dessert in the container at a freezing temperature. The surface of the container can be cooled with a small amount of cold air flowing along the top of the container, which not only maintains the surface of the frozen dessert at a predetermined temperature but also prevents it from becoming extremely dry, making it suitable for large-volume sales of frozen desserts. We can provide a showcase.

[Brief explanation of the drawing]

1 and 2 are longitudinal cross-sectional views showing different embodiments of the cold air circulation method of the refrigerated showcase of the present invention, and FIG. 3 is the same as that shown in FIG.
FIG. (151... Container, α meter... Storage room, (q...
Frozen dessert. Figure 4 Figure 2 Figure 3

Claims (1)

[Scope of Claims] 1. A large amount of forced circulation cold air is caused to flow along the bottom surface of a container with an open top, which is stored in a storage room and filled with frozen desserts such as ice cream, and is also forced to circulate along the top surface of the container. A method of circulating cold air in a frozen showcase by flowing a small amount of cold air. 2. A method for circulating cold air in a refrigerated showcase according to claim 1, wherein the container is made of metal such as stainless steel.