JPS582567A - Refrigerating and cooling method - 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 The present invention relates to relatively large-scale refrigeration and cooling systems implemented in supermarkets, buildings, factories, etc. Concerning freezing and cooling methods using heat storage methods.

It is well known that cooling equipment such as freezers or refrigerators or indoor cooling equipment used in various industrial cooling systems consumes a large amount of electrical energy, and on summer days When a bicycle dies, the operation of these devices is concentrated, and when combined with the high outside temperature, the load increases, and there is often a risk that the maximum power supply will be exceeded, resulting in a so-called power crisis, which is a major social concern. It has become. The recent energy crisis has led to soaring prices for energy, and increased running costs are putting pressure on corporate management.

This invention was proposed in view of the above situation, and aims at effective energy consumption, and attempts to obtain a predetermined low temperature at any time by utilizing the frozen matter of water or Prine liquid by its latent heat of fusion. It is something. Conventionally, various methods of cooling frozen fists using cold storage agents or frozen brine have been proposed and implemented, but in all cases, the fatal problem of poor heat exchange efficiency with the brine liquid, which transfers heat, is a fatal problem. had.

In this invention, water or brine liquid, which is a heat medium, is frozen into flakes or blocks at any time using a continuous ice maker, and this frozen material is charged and stored in a water storage tank containing the water or brine liquid. The brine liquid is brought into direct contact with or directly dissolved in the medium water or brine, and the water is directly cooled by the frozen matter and is introduced into the cooling coil of the cooler. Therefore, according to this invention, the heat medium itself is frozen,
Since the latent heat of fusion is directly utilized, the heat exchange efficiency is extremely high. Embodiments will be described below with reference to the accompanying drawings.

Fig. 771 is a schematic system diagram showing an embodiment of the present invention with a partial cross section, and this freezing/cooling system includes a continuous ice maker 10, an ice storage tank 20, and coolers 30a and 30b each equipped with a cooling coil. Consisting of various parts, continuous ice maker lO
and the ice storage tank 20 are connected by a supply conduit 19,
The ice storage tank 20 and each cooler 30m, 30b are connected to the conduit 29
and 6 connected by a return conduit 31. In the figure, 17 and 27 are pumps, 32. 32 is a switching valve, 33,
35 represents a bypass pipe, W is water or brine liquid,
V indicates the flake-like or block-like frozen material.

The continuous ice maker IO is a well-known type of ice maker that is generally referred to as an ice maker.For example, as shown in the figure, a brine liquid is stored in a cylinder 12 with a refrigerator 11 inside while maintaining a constant water level. Ice gradually grows on the inner wall surface of the cylinder. This frozen material is peeled off by a screw 13 rotating within a cylinder 12 to obtain ice V in the form of flakes or blocks. If water is supplied to this ice maker 1o, it is approximately 0'c
However, depending on the requirements of the cooler, if it is desired to obtain frozen matter below O'c (minus), a brine solution is used.

Various types of brine liquid are known, but recently, from the viewpoint of contact resistance, water-soluble and relatively low molecular weight organic compounds such as ethylene glycol and propylene glycol have been used to meet the desired freezing temperature. Selected by degrees. In the following examples, nine cases will be described using the same brine solution.

The flake-shaped or block-shaped prine ice (hereinafter referred to as prine ice) V produced by the above continuous ice maker 10 is charged and stored in the water storage tank 20 through an appropriate input port.

The water storage tank 20 is filled with brine liquid W in advance, and when the brine ice V is added, it is stored in the form of sleet. At this time, the heat exchange between the prine ice V and the brine liquid W is extremely efficient due to the direct contact between the prine ice V and the brine liquid W, and because the limb brine ice W' itself melts and becomes the brine liquid W. It will be done. In order to perform this heat exchange more efficiently throughout the tank, the tank 20 may be provided with a jet nozzle (not shown) or the like to generate convection. As shown in the figure, a partition 21 (such as a perforated plate or a wire-like object) horizontally partitioning the inside of the tank is provided in the tank 20 to block the intrusion of the prine ice V. This may be due to frozen matter getting into the conduit 29 to the coolers 30a, 30b, etc. or the supply conduit 19 to the ice maker 10, which will be described later, and disrupting temperature control, or to related equipment. This is a rounding consideration to avoid giving rise to unexpected obstacles. In addition, the supply of prine ice V from the ice maker IO to the Kanojiku tank 29 operates at a level ↑ that depends on the amount of water stored.
Controlled by a switch etc. In addition, in the embodiment, the pressure on the ice maker 10? IntW is supplied by the pump 17 by laying the tank 20QQ conduit 19? I don't like how it's expressed.

The brine liquid W or ice V cooled by the prine ice V in the ice storage tank 20 is melted, and the brine WIW is cooled by the conduit 29.
．． b, -30c- (introduced into the D cooling coil) and cooled by a 7-ton or the like.

P? This is carried out based on the operation of the pump 27, so if one or more of the coolers is not used, the bypass pipe 33 is used for reflux. On the other hand, the return brine liquid that has been left to cool by the cooling coil is returned to the ice storage tank 20 through the return conduit 31. This returned brine liquid is rapidly cooled again by contacting and coexisting with the brine ice V in the water storage tank 20.

In this invention, since the latent heat of fusion of the frozen material itself is mixed with water or braai/liquid and used as is, a rapid cooling effect is possible, and the amount of heat stored in the frozen material itself is extremely large per unit volume. It has the excellent advantage of having a large heat exchange efficiency and extremely good heat exchange efficiency. In addition, since cold storage is possible with a water storage tank, it is possible to perform staggered cooling, in which ice is stored at times when the ice maker is operating or under favorable conditions, such as late at night and early in the morning, and then used during the day to cool the ice. . The ice maker itself operates continuously and instantaneously □:
Since there is no physical peak, the capacitance is small, which makes it economical and the device has excellent safety.

[Brief explanation of the drawing]

FIG. 1 is a schematic system diagram showing an embodiment of the present invention with a partial cross section. 10... Continuous ice maker, 20... Water storage tank, 2
9... Conduit, 30a, 30b, 30c... Cooler, 31... Return conduit, V-Water 9 is Brine, V
-・Frozen eyelids. Patent applicant Howa Giken Kogyo Co., Ltd.

Claims (1)

[Scope of Claims] 1. Water or plying liquid is iced into flakes or crystals by a continuous ice maker, and the frozen product is stored in an ice storage tank containing prine liquid. , in the ice storage tank? A freezing/cooling method characterized in that chilled water or prine liquid is introduced into a cooling coil through a conduit to cool the freezing coil. 2. The freezing/cooling method according to claim 1, wherein the water or prine liquid return conduit is connected to an ice storage tank.